WO2016177928A1 - Wrench type tool for the mounting of studs and similar items - Google Patents
Wrench type tool for the mounting of studs and similar items Download PDFInfo
- Publication number
- WO2016177928A1 WO2016177928A1 PCT/ES2016/070344 ES2016070344W WO2016177928A1 WO 2016177928 A1 WO2016177928 A1 WO 2016177928A1 ES 2016070344 W ES2016070344 W ES 2016070344W WO 2016177928 A1 WO2016177928 A1 WO 2016177928A1
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- WO
- WIPO (PCT)
- Prior art keywords
- stud
- section
- radius
- transmission part
- coupling
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
- B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
- B25B23/103—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means for gripping threaded studs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
Definitions
- the present invention relates generally to a key type tool for mounting studs, bolts and similar and more particularly that allows to maintain the position or torque applied to the stud / bolt securely when said tool is removed or removed. of the stud already mounted on the corresponding parts union.
- a stud / bolt is a headless screw with two totally or partially threaded ends that is used for coupling two work pieces that must be held together under a certain tension.
- Said studs / bolts may have various configurations as is known in the current art.
- This tool consists of a tube with a unscrewed tip for application of the unfastening torque and an eccentric that penetrates the tube to press against the surface of the stud, so that also here there can be a deterioration of the thread that damages or even prevents the subsequent use of said stud.
- the invention aims at the development of a key type tool that allows solving the problem posed, guaranteeing that when the bolt / bolt is already disengaged, the position and / or torque is not varied of tightening said bolt / bolt, further guaranteeing that the tightening force / tension is applied only axially to distribute the tightening torque evenly over the threading of the stud.
- a key type tool for mounting studs and the like for mounting a stud or the like with at least one partially or fully threaded tip, said useful characterized in that:
- a mouthpiece externally has respective coaxial mouth and neck cylindrical portions and with a through inner hole extending between said mouth and neck portions with axial symmetry with respect to an axis and being delimited in said inner hole:
- a threaded cylindrical lower section with a first radius and a first thread passage to coaxially engage by screwing on the at least one threaded end of the stud to be mounted; b) an intermediate section with a first conical trunk section extending from the top of the first section, then a second cylindrical section with a second radius that is smaller than the first radius; Y
- a piece of transmission of the movable tightening force / tension is provided, axially within the fourth threaded section of said cylindrical upper section and whose transmission part has an upper end for application of the tightening force / tension and a lower end for transmission thereof to the stud to be mounted;
- a centering stop is provided arranged to move in the axial direction which has a head sized to support tightly in the third section of the upper section and an end rod to extend from the intermediate section to the lower section, so that its end can rest against the stud to be mounted;
- Coupling / decoupling means which, by turning in a first direction of rotation, allow the transmission piece through its lower end to rest against the head of the centering stop, moving it so that its end rod rests against the stud. and the clamping force / tension applied at the upper end of the transmission part is thereby transmitted to the mouthpiece in which said stud is threaded; while by turning in a second direction of rotation, opposite to the first direction of rotation, said coupling / disengaging means cause the transmission piece to stop supporting against the centering stop, so that said centering stop stops exerting pressure against the stud and the torque applied to the transmitting part is applied to the mouth and thereby unscrew the stud.
- the fourth section of the upper cylindrical section is threaded with a second thread pitch that is larger than the first thread pitch and that the transmission part has an external thread for coupling by means of said threading fourth section of the upper cylindrical section.
- the coupling / uncoupling means are constituted by an assembly forming an orthogonally projecting pin from the lateral surface of the transmission piece and a hole collision arranged inclined in the neck portion of the mouthpiece for displacement of said pin.
- the pin of the transmission part and said transmission part of are provided as separate parts.
- the transmission part is configured at its upper end as a hub / bushing for coupling of clamping tools, such as hand, power or pneumatic tools.
- the free end of the end rod of the centering stop is configured to fit tightly against the end of the stud to be mounted.
- the free end of the end rod of the centering stop is concave, convex, flat, flat with a central tip, or with a conical tip, for respective engagement fitted on a respective stud / bolt made by hot stamping , cold stamping, sawing, machining and shearing.
- Figure 1 shows various configurations of machined studs / bolts according to the prior art to facilitate the coupling of flanges or fastening tools that are used to guarantee the position and / or the torque using stud mounting tools according to the prior art
- Figure 2 shows an exploded view in elevation and partially sectioned of a key type tool according to a first embodiment of the invention.
- Figure 3 shows an exploded view in elevation and partially sectioned of a key type tool according to a second embodiment of the invention.
- Figures 4 to 6 show respective elevational and partially sectioned views of a key type tool according to Figure 3, in assembled state and respective operating positions.
- Figures 7A to 7E show alternative configurations of the centering stop of the tool according to Figures 2 and 3, adapted for coupling to various configurations shown of the end of the stud / bolt to be mounted.
- the key type tool consists of a coaxial assembly with a mouth portion (2) for coupling to the stud (E) to be assembled, a piece of transmission of the force / tension of tightening (3) and a centering stop (4) arranged movable inside the mouth portion to lock / unlock the stud with the action of the piece of transmission (3) with the aid of correspondingly provided coupling / decoupling means (5), as will be explained in detail below.
- the mouthpiece (2) is externally configured with respective cylindrical mouth (20) and neck (21) coaxial portions and with an internal hollow (22) through which extends between said mouth and neck portions. It is observed that in said inner hollow (22) they are delimited with axial symmetry with respect to an axis (X):
- the transmission part (3) has an upper end (30) for application of the tightening force / tension and a lower end (31) for transmission thereof to the stud to be mounted. It can be further seen that according to an embodiment advantageously at said upper end (30) it is configured as a hub / bushing (33) for coupling a clamping tool, for example manual, electric or pneumatic.
- the centering stop (4) has a head (40), sized to fit tightly on the third section (2230) of the upper section (223) of the mouth portion (2) and a shank of limb (41) to extend from the intermediate section (221) to the lower section (220) of said mouth portion (2), so that with its axial displacement its end can rest against the end (E1) of the stud (E) to ride.
- the coupling / uncoupling means (5) are constituted by a set formed by pin (32) protruding orthogonally from the lateral surface of the transmission piece (3) and by a collision hole (23) arranged inclined in the neck portion (21) of the mouthpiece (2) and in whose hole (23) said pin can be moved as will be explained in detail below.
- said coupling / decoupling means (5) can be configured in accordance with any other arrangement, provided that by turning in a first direction of rotation (G1) they allow the transmission part (3) through its lower end (31) rest against the head (40) of the centering stop (4), moving it so that its end rod (41) rests against the stud (E) and the clamping force / tension applied to the upper end ( 30) of the transmission part is thereby transmitted to the mouthpiece (2) in which said stud is threaded; and that by turning in a second direction of rotation (G2), opposite to the first direction of rotation, said coupling / decoupling means (5) cause the transmission piece (3) to stop supporting against the centering stop (3), so that said centering stop stops exerting pressure against the stud to be assembled and the release torque applied to the transmitter piece is applied to the mouth and thereby unscrews the stud.
- G1 first direction of rotation
- said coupling / decoupling means (5) cause the transmission piece (3) to stop supporting against the centering stop (3), so that said centering stop stops
- the free end of the end rod (41) of the centering stop (4) is configured to fit tightly against the end (E1) of the stud (E) to be mounted.
- it can be configured at its concave or convex end (410) for hot and cold stamped studs / bolts as shown respectively in Figures 7A and 7B, flat with a small tip for machined studs / bolts as shown in Figure 7C, fully flat for studs / serrated bolts with is shown in Figure 7D or fully tapered for studs / shears as shown in Figure 7E.
- FIG 3 A second embodiment of the invention is illustrated in Figure 3, which differs only from the embodiment shown in Figure 2, because the fourth section (2231) of the upper cylindrical section (223) is threaded with a second thread pitch (P2) which is smaller than the first thread passage (P2) and the transmission part (3) is provided with a thread for coupling to said thread with the second thread passage of said fourth section (2231) of the section upper cylindrical (223).
- P2 second thread pitch
- Figure 4 shows a position so to speak "neutral" of the tool (1) according to the second embodiment of the invention even without applying to a stud to be mounted (E). It can be seen that the transmission part (3) is partially threaded into the third section (2231) of the mouth (2), so that its lower end faces, by not coming into contact, the head (40) of the stop centering (4) and its end rod (41) being, passing through the intermediate section (221) of the mouth (2) just penetrated by its free end into the lower section (220) of said mouth.
- the transmission part (3) is rotatably coupled to the stud to be mounted and the tightening torque applied to its upper part (30) can be transmitted to the stud to be mounted thanks to the friction coupling of the centering stop (4) and the stud (AND).
- the tightening torque applied to its upper part (30) can be transmitted to the stud to be mounted thanks to the friction coupling of the centering stop (4) and the stud (AND).
- the tool (1) according to the invention can be separated or removed from the stud without causing unfastening / dislocation of said stud / bolt.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Electric Cable Installation (AREA)
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
Abstract
Description
Útil tipo llave para montado de espárragos y similares Useful type wrench for mounting studs and the like
DESCRIPCIÓN Ámbito v técnica anterior DESCRIPTION Field and prior art
La presente invención se refiere en general a un útil tipo llave para montaje de espárragos/pernos, varillas roscadas y similares y más particularmente que permita mantener la posición o par de apriete aplicado al espárrago/perno de manera segura cuando dicho útil se retira o desmonta del espárrago ya montado en la unión de piezas correspondiente. The present invention relates generally to a key type tool for mounting studs, bolts and similar and more particularly that allows to maintain the position or torque applied to the stud / bolt securely when said tool is removed or removed. of the stud already mounted on the corresponding parts union.
Como se conoce por los técnicos un espárrago/perno es un tornillo sin cabeza con dos extremos total o parcialmente roscados que se utiliza para acoplamiento de dos piezas de trabajo que deben mantenerse unidas bajo una determinada tensión. Dichos espárragos/pernos, pueden presentar diversas configuraciones como es conocido en la técnica actual. As known by the technicians, a stud / bolt is a headless screw with two totally or partially threaded ends that is used for coupling two work pieces that must be held together under a certain tension. Said studs / bolts may have various configurations as is known in the current art.
Un problema técnico que se plantea cuando se monta un espárrago/perno mediante una herramienta tipo llave, es el mantenimiento de la posición y/o del par de apriete deseado para la unión, ya que durante la separación de la herramienta de montaje se produce un arrastre del espárrago/perno que conduce a un desapriete o perdida de la posición deseados. A technical problem that arises when a stud / bolt is mounted by means of a wrench-type tool, is the maintenance of the position and / or the desired tightening torque for the joint, since during the separation of the mounting tool a asparagus / bolt drag leading to a looseness or loss of the desired position.
Como se conoce, durante la separación de la herramienta de montaje, es posible sujetar el espárrago manualmente o mediante una herramienta tipo brida y así evitar su indeseado aflojamiento/descolocación de la posición ajustada durante el montaje. A menudo para facilitar la sujeción del espárrago/perno cuando se separa de la herramienta de apriete, las extremidades libres de estos espárragos/pernos se mecanizan con diversos acabados lo que produce un aumento de los costes de producción del espárrago/perno. En las figura 1 A a 1 E se muestran diversos ejemplos de espárragos/pernos mecanizados para facilitar la sujeción durante la operación de desacoplamiento de la herramienta de apriete conforme a la técnica actual. As is known, during the separation of the mounting tool, it is possible to hold the stud manually or by means of a flange type tool and thus avoid its unwanted loosening / dislocation of the adjusted position during assembly. Often to facilitate the fastening of the stud / bolt when separated from the clamping tool, the free ends of these studs / bolts are machined with various finishes resulting in an increase in the production costs of the stud / bolt. Various examples of machined studs / bolts are shown in Figures 1 A to 1 E to facilitate clamping during the decoupling operation of the clamping tool according to the current technique.
A través del documento ES U234480, se conoce un utensilio para desmontado de espárragos y similares que podría emplearse para su montado que está previsto como una pieza de casquillo para acoplamiento al espárrago y unos medios de presión en forma de bolas que pueden ajustarse a modo de mordaza sobre la superficie lateral del espárrago durante la operación de desmontado o soltarse cuando el espárrago ha sido desmontado. Con este utensilio se aplica una presión sobre el roscado del espárrago que puede conducir a su deterioro. Además, en el mercado se conoce una herramienta para la extracción de espárragos, varillas roscadas, tornillos con la cabeza rota, etc., comercializada por la firma WURTH. Esta herramienta consta de un tubo con una extremidad de desenroscado para aplicación del par de desapriete y una excéntrica que penetra en el tubo para presionar contra la superficie del espárrago, de manera que también aquí puede producirse un deterioro de la rosca que perjudica o incluso impide la posterior utilización de dicho espárrago. Through document ES U234480, a tool for disassembly of studs and the like is known that could be used for assembly which is intended as a bushing piece for coupling to the stud and ball-shaped pressure means that can be adjusted as a jaw on the lateral surface of the stud during the disassembly or release operation when the stud has been disassembled. With this utensil a pressure is applied on the threading of the stud that can lead to its deterioration. In addition, a tool for the extraction of studs, threaded rods, screws with a broken head, etc., marketed by the firm WURTH, is known in the market. This tool consists of a tube with a unscrewed tip for application of the unfastening torque and an eccentric that penetrates the tube to press against the surface of the stud, so that also here there can be a deterioration of the thread that damages or even prevents the subsequent use of said stud.
Objeto de la invención Object of the invention
Partiendo del estado de la técnica precedentemente descrito, la invención se plantea como objetivo el desarrollo de un útil tipo llave que permita solucionar el problema planteado, garantizando que cuando se desacopla del espárrago/perno ya montado, no se varia la posición y/o par de apriete de dicho espárrago/perno, garantizando además que la fuerza/tensión de apriete se aplique únicamente en sentido axial para repartir el par de apriete uniformemente sobre el roscado del espárrago. Starting from the state of the art described above, the invention aims at the development of a key type tool that allows solving the problem posed, guaranteeing that when the bolt / bolt is already disengaged, the position and / or torque is not varied of tightening said bolt / bolt, further guaranteeing that the tightening force / tension is applied only axially to distribute the tightening torque evenly over the threading of the stud.
Este objetivo se alcanza a través de las características indicadas en la reivindicación 1 . Otras ventajas y objetivos se consiguen mediante las características indicadas en las reivindicaciones dependientes. De acuerdo con la invención se proporciona un útil tipo llave para montado de espárragos y similares destinado a montar un espárrago o similar con al menos una extremidad parcial o totalmente roscada, caracterizado dicho útil porque: This objective is achieved through the characteristics indicated in claim 1. Other advantages and objectives are achieved by the characteristics indicated in the dependent claims. In accordance with the invention, a key type tool for mounting studs and the like is provided for mounting a stud or the like with at least one partially or fully threaded tip, said useful characterized in that:
- está prevista una pieza de embocadura que exteriormente presenta respectivas porciones cilindricas de boca y de cuello coaxiales y con un hueco interior pasante extendiéndose entre dichas porciones de boca y de cuello con simetría axial respecto de un eje y estando delimitas en dicho hueco interior: - a mouthpiece is provided that externally has respective coaxial mouth and neck cylindrical portions and with a through inner hole extending between said mouth and neck portions with axial symmetry with respect to an axis and being delimited in said inner hole:
a) una sección inferior cilindrica roscada con un primer radio y un primer paso de rosca para acoplarse coaxialmente por atornillado sobre la, al menos una, extremidad roscada del espárrago a montar; b) una sección intermedia con un primer tramo tronco cónico que se extiende desde la parte superior de la primera sección, a continuación un segundo tramo cilindrico con un segundo radio que es menor que el primer radio; y a) a threaded cylindrical lower section with a first radius and a first thread passage to coaxially engage by screwing on the at least one threaded end of the stud to be mounted; b) an intermediate section with a first conical trunk section extending from the top of the first section, then a second cylindrical section with a second radius that is smaller than the first radius; Y
c) una sección superior cilindrica con un tercer tramo cilindrico que tiene un tercer radio que es mayor que el segundo radio, pero menor que el primer radio y a continuación un cuarto tramo cilindrico que tiene un cuarto radio que es mayor que el tercer radio, pero menor que el primer radio; c) a cylindrical upper section with a third cylindrical section that has a third radius that is larger than the second radius, but smaller than the first radius and then a fourth cylindrical section that has a fourth radius that is larger than the third radius, but less than the first radius;
- está prevista una pieza de transmisión de la fuerza/tensión de apriete desplazable, axialmente dentro del cuarto tramo roscado de la citada sección superior cilindrica y cuya pieza de transmisión tiene un extremo superior para aplicación de la fuerza/tensión de apriete y un extremo inferior para trasmisión de la misma hasta el espárrago a montar; - a piece of transmission of the movable tightening force / tension is provided, axially within the fourth threaded section of said cylindrical upper section and whose transmission part has an upper end for application of the tightening force / tension and a lower end for transmission thereof to the stud to be mounted;
- está previsto un tope de centrado dispuesto para desplazarse en la dirección axial que tiene una cabeza dimensionada para apoyar ajustadamente en el tercer tramo de la sección superior y un vástago de extremidad para extenderse desde la sección intermedia hasta la sección inferior, de manera que su extremo puede apoyar contra el espárrago a montar;- a centering stop is provided arranged to move in the axial direction which has a head sized to support tightly in the third section of the upper section and an end rod to extend from the intermediate section to the lower section, so that its end can rest against the stud to be mounted;
- están previstos unos medios de acoplamiento/desacoplamiento que mediante giro en un primer sentido de giro, permiten que la pieza de transmisión a través su extremo inferior apoye contra la cabeza del tope centrador, desplazándolo de manera que su vástago de extremidad apoya contra el espárrago y la fuerza/tensión de apriete aplicada en el extremo superior de la pieza de transmisión se transmita con ello a la pieza de embocadura en la que está roscado dicho espárrago; mientras que mediante giro en un segundo sentido de giro, opuesto al primer sentido de giro, dichos medios de acoplamiento/desacoplamiento hacen que la pieza de transmisión deje de apoyar contra el tope centrador, de manera que dicho tope centrador deja de ejercer presión contra el espárrago y el par de desapriete aplicado a la pieza transmisora sea aplicado a la embocadura y con ello se desenrosque del espárrago. - Coupling / decoupling means are provided which, by turning in a first direction of rotation, allow the transmission piece through its lower end to rest against the head of the centering stop, moving it so that its end rod rests against the stud. and the clamping force / tension applied at the upper end of the transmission part is thereby transmitted to the mouthpiece in which said stud is threaded; while by turning in a second direction of rotation, opposite to the first direction of rotation, said coupling / disengaging means cause the transmission piece to stop supporting against the centering stop, so that said centering stop stops exerting pressure against the stud and the torque applied to the transmitting part is applied to the mouth and thereby unscrew the stud.
Conforme a una característica adicional resulta ventajoso alternativamente que el cuarto tramo de la sección superior cilindrica esté roscado con un segundo paso de rosca que es mayor que el primer paso de rosca y que la pieza de transmisión presente un roscado exterior para acoplamiento mediante roscado en citado cuarto tramo de la sección superior cilindrica. According to an additional feature it is advantageously alternatively that the fourth section of the upper cylindrical section is threaded with a second thread pitch that is larger than the first thread pitch and that the transmission part has an external thread for coupling by means of said threading fourth section of the upper cylindrical section.
De acuerdo con una característica adicional de la invención resulta ventajoso que los medios de acoplamiento/desacoplamiento estén constituidos por un conjunto formando por pasador saliente ortogonalmente desde la superficie lateral de la pieza de transmisión y por un agujero coliso dispuesto inclinado en la porción de cuello de la pieza de embocadura para desplazamiento de dicho pasador. According to a further feature of the invention, it is advantageous that the coupling / uncoupling means are constituted by an assembly forming an orthogonally projecting pin from the lateral surface of the transmission piece and a hole collision arranged inclined in the neck portion of the mouthpiece for displacement of said pin.
Conforme a una característica adicional de la invención el pasador de la pieza de transmisión y dicha pieza de transmisión de están previstas como piezas separadas. According to a further feature of the invention, the pin of the transmission part and said transmission part of are provided as separate parts.
También de acuerdo con una característica adicional de la invención resulta una ventaja cuando la pieza de transmisión está configurada en su extremo superior a modo de cubo/buje para acoplamiento de herramientas de apriete, tales como herramientas manuales, eléctricas o neumáticas. Also according to an additional feature of the invention is an advantage when the transmission part is configured at its upper end as a hub / bushing for coupling of clamping tools, such as hand, power or pneumatic tools.
Aún de acuerdo con una característica adicional de la invención resulta ventajoso que el extremo libre del vástago de extremidad del tope centrador esté configurado para adaptarse ajustadamente contra la extremidad del espárrago a montar. Aquí resulta especialmente ventajoso que el extremo libre del vástago de extremidad del tope centrador esté configurado cóncavo, convexo, plano, plano con una punta central, o con una punta cónica, para respectivo acoplamiento ajustado sobre un respectivo espárrago/perno fabricado por estampado en caliente, estampado en frío, serrado, mecanizado y cizallado. Breve descripción de los dibujos Even in accordance with a further feature of the invention it is advantageous that the free end of the end rod of the centering stop is configured to fit tightly against the end of the stud to be mounted. Here it is especially advantageous that the free end of the end rod of the centering stop is concave, convex, flat, flat with a central tip, or with a conical tip, for respective engagement fitted on a respective stud / bolt made by hot stamping , cold stamping, sawing, machining and shearing. Brief description of the drawings
Otras características y ventajas de la invención resultarán más claramente de la descripción que sigue realizada con la ayuda de los dibujos anexos, referidos a un ejemplo de ejecución no limitativo y en los que: Other features and advantages of the invention will result more clearly from the description that follows made with the help of the attached drawings, referring to an example of non-limiting execution and in which:
La figura 1 , muestra diversas configuraciones de espárragos/pernos mecanizados conforme a la técnica anterior para facilitar el acoplamiento de bridas o herramientas de sujeción que se utilizan para garantizar la posición y/o el par de apriete utilizando útiles de montado de espárragos conforme a la técnica anterior. Figure 1 shows various configurations of machined studs / bolts according to the prior art to facilitate the coupling of flanges or fastening tools that are used to guarantee the position and / or the torque using stud mounting tools according to the prior art
La figura 2, muestra una vista desmontada en alzado y parcialmente seccionada de un útil tipo llave conforme a una primera forma de realización de la invención. Figure 2 shows an exploded view in elevation and partially sectioned of a key type tool according to a first embodiment of the invention.
La figura 3 muestra una vista desmontada en alzado y parcialmente seccionada de un útil tipo llave conforme a una segunda forma de realización de la invención. Las figuras 4 a 6, muestran respectivas vistas en alzado y parcialmente seccionadas de un útil tipo llave según la figura 3, en estado montado y respectivas posiciones de funcionamiento. Figure 3 shows an exploded view in elevation and partially sectioned of a key type tool according to a second embodiment of the invention. Figures 4 to 6 show respective elevational and partially sectioned views of a key type tool according to Figure 3, in assembled state and respective operating positions.
Las figuras 7A a 7E, muestran configuraciones alternativas del tope centrador del útil según las figuras 2 y 3, adaptadas para acoplamiento a diversas configuraciones mostradas de la extremidad del espárrago/perno a montar. Figures 7A to 7E show alternative configurations of the centering stop of the tool according to Figures 2 and 3, adapted for coupling to various configurations shown of the end of the stud / bolt to be mounted.
Descripción detallada de las realizaciones preferidas Como se muestra en la figuras, el útil tipo llave de acuerdo con la invención, indicado en general mediante la referencia (1 ), consta de un montaje coaxial con una porción de embocadura (2) para acoplamiento al espárrago (E) a montar, una pieza de transmisión de la fuerza/tensión de apriete (3) y un tope centrador (4) dispuesto desplazable en el interior de la porción de embocadura para bloquear/desbloquear el espárrago con la actuación de la pieza de transmisión (3) con la ayuda de unos medios de acoplamiento/desacoplamiento (5) correspondientemente previstos, tal y como será explicado en detalle más adelante. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in the figures, the key type tool according to the invention, indicated generally by reference (1), consists of a coaxial assembly with a mouth portion (2) for coupling to the stud (E) to be assembled, a piece of transmission of the force / tension of tightening (3) and a centering stop (4) arranged movable inside the mouth portion to lock / unlock the stud with the action of the piece of transmission (3) with the aid of correspondingly provided coupling / decoupling means (5), as will be explained in detail below.
En una primera forma de realización de la invención y como puede verse con mayor detalle a través de la figura 2, la pieza de embocadura (2) está exteriormente configurada con respectivas porciones cilindricas de boca (20) y de cuello (21 ) coaxiales y con un hueco interior (22) pasante que se extiende entre dichas porciones de boca y de cuello. Se observa que en dicho hueco interior (22) están delimitadas con simetría axial respecto de un eje (X): In a first embodiment of the invention and as can be seen in greater detail through Figure 2, the mouthpiece (2) is externally configured with respective cylindrical mouth (20) and neck (21) coaxial portions and with an internal hollow (22) through which extends between said mouth and neck portions. It is observed that in said inner hollow (22) they are delimited with axial symmetry with respect to an axis (X):
a) una sección inferior cilindrica (220) roscada con un primer radio (R1 ) y un primer paso de rosca (P1 ) para acoplarse coaxialmente por atornillado sobre la, al menos una, extremidad roscada (E1 ) del espárrago a montar; a) a cylindrical lower section (220) threaded with a first radius (R1) and a first thread passage (P1) to be coaxially coupled by screwing on the at least one threaded end (E1) of the stud to be mounted;
b) una sección intermedia (221 ) con un primer tramo tronco cónico (2210) que se extiende desde la parte superior de la sección inferior (220), a continuación un segundo tramo (221 1 ) cilindrico con un segundo radio (R2) que es menor que el primer radio (R1 ); y b) an intermediate section (221) with a first conical trunk section (2210) extending from the top of the lower section (220), then a second cylindrical section (221 1) with a second radius (R2) that it is smaller than the first radius (R1); Y
c) una sección superior cilindrica (223) con un tercer tramo cilindrico (2230) que tiene un tercer radio (R3) que es mayor que el segundo radio, pero menor que el primer radio (R1 ) y a continuación un cuarto tramo cilindrico (2231 ) que tiene un cuarto radio (R4) que es mayor que el tercer radio, pero menor que el primer radio. c) a cylindrical upper section (223) with a third cylindrical section (2230) having a third radius (R3) that is larger than the second radius, but smaller than the first radius (R1) and then a fourth cylindrical section (2231) ) that has a fourth radius (R4) that is larger than the third radius, but smaller than the first radius.
Como se muestra en las figuras la pieza de transmisión (3) tiene un extremo superior (30) para aplicación de la fuerza/tensión de apriete y un extremo inferior (31 ) para trasmisión de la misma hasta el espárrago a montar. Puede verse adicionalmente que de acuerdo con una realización ventajosa en dicho extremo superior (30) está configurado a modo de cubo/buje (33) para acoplamiento de una herramienta de apriete, por ejemplo manual, eléctrica o neumática. As shown in the figures, the transmission part (3) has an upper end (30) for application of the tightening force / tension and a lower end (31) for transmission thereof to the stud to be mounted. It can be further seen that according to an embodiment advantageously at said upper end (30) it is configured as a hub / bushing (33) for coupling a clamping tool, for example manual, electric or pneumatic.
En las figuras puede verse que el tope de centrado (4) tiene una cabeza (40), dimensionada para apoyar ajustadamente en el tercer tramo (2230) de la sección superior (223) de la porción de embocadura (2) y un vástago de extremidad (41 ) para extenderse desde la sección intermedia (221 ) hasta la sección inferior (220) de dicha porción de embocadura (2), de manera que con su desplazamiento en sentido axial su extremo puede apoyar contra el extremo (E1 ) del espárrago (E) a montar. In the figures it can be seen that the centering stop (4) has a head (40), sized to fit tightly on the third section (2230) of the upper section (223) of the mouth portion (2) and a shank of limb (41) to extend from the intermediate section (221) to the lower section (220) of said mouth portion (2), so that with its axial displacement its end can rest against the end (E1) of the stud (E) to ride.
Conforme a la invención, los medios de acoplamiento/desacoplamiento (5), están constituidos por un conjunto formando por pasador (32) saliente ortogonalmente desde la superficie lateral de la pieza de transmisión (3) y por un agujero coliso (23) dispuesto inclinado en la porción de cuello (21 ) de la pieza de embocadura (2) y en cuyo agujero (23) puede desplazarse dicho pasador como se explicará en detalle más adelante. No obstante conforme a la invención dichos medios de acoplamiento/desacoplamiento (5) pueden estar configurados de acuerdo con cualquier otra disposición, siempre que mediante giro en un primer sentido de giro (G1 ) permitan que la pieza de transmisión (3) a través su extremo inferior (31 ) apoye contra la cabeza (40) del tope centrador (4), desplazándolo de manera que su vástago de extremidad (41 ) apoye contra el espárrago (E) y la fuerza/tensión de apriete aplicada en el extremo superior (30) de la pieza de transmisión se transmita con ello a la pieza de embocadura (2) en la que está roscado dicho espárrago; y que mediante giro en un segundo sentido de giro (G2), opuesto al primer sentido de giro, dichos medios de acoplamiento/desacoplamiento (5) hagan que la pieza de transmisión (3) deje de apoyar contra el tope centrador (3), de manera que dicho tope centrador deje de ejercer presión contra el espárrago a montar y el par de desapriete aplicado a la pieza transmisora sea aplicado a la embocadura y con ello se desenrosque del espárrago. According to the invention, the coupling / uncoupling means (5), are constituted by a set formed by pin (32) protruding orthogonally from the lateral surface of the transmission piece (3) and by a collision hole (23) arranged inclined in the neck portion (21) of the mouthpiece (2) and in whose hole (23) said pin can be moved as will be explained in detail below. However, according to the invention, said coupling / decoupling means (5) can be configured in accordance with any other arrangement, provided that by turning in a first direction of rotation (G1) they allow the transmission part (3) through its lower end (31) rest against the head (40) of the centering stop (4), moving it so that its end rod (41) rests against the stud (E) and the clamping force / tension applied to the upper end ( 30) of the transmission part is thereby transmitted to the mouthpiece (2) in which said stud is threaded; and that by turning in a second direction of rotation (G2), opposite to the first direction of rotation, said coupling / decoupling means (5) cause the transmission piece (3) to stop supporting against the centering stop (3), so that said centering stop stops exerting pressure against the stud to be assembled and the release torque applied to the transmitter piece is applied to the mouth and thereby unscrews the stud.
Como se muestra en las figuras 7A a 7E, de acuerdo con la invención el extremo libre del vástago de extremidad (41 ) del tope centrador (4) está configurado para adaptarse ajustadamente contra la extremidad (E1 ) del espárrago (E) a montar. Así puede estar configurado en su extremo (410) cóncavo o convexo para espárragos/pernos estampados en caliente y en frío como se muestra respectivamente en las figuras 7A y 7B, plano con una pequeña punta para espárragos/pernos mecanizados como se muestra en la figura 7C, totalmente plano para espárragos/pernos serrados con se representa en la figura 7D o bien totalmente cónico para espárragos/pernos cizallados como se muestra en la figura 7E. En la figura 3 se ilustra una segunda forma de realización de la invención que tan solo difiere de la realización mostrada en la figura 2, porque el cuarto tramo (2231 ) de la sección superior cilindrica (223) está roscado con un segundo paso de rosca (P2) que es menor que el primer paso de rosca (P2) y la pieza de transmisión (3) está provista de un roscado para acoplamiento a la citada rosca con el segundo paso de rosca de dicho cuarto tramo (2231 ) de la sección superior cilindrica (223). As shown in Figures 7A to 7E, according to the invention the free end of the end rod (41) of the centering stop (4) is configured to fit tightly against the end (E1) of the stud (E) to be mounted. Thus it can be configured at its concave or convex end (410) for hot and cold stamped studs / bolts as shown respectively in Figures 7A and 7B, flat with a small tip for machined studs / bolts as shown in Figure 7C, fully flat for studs / serrated bolts with is shown in Figure 7D or fully tapered for studs / shears as shown in Figure 7E. A second embodiment of the invention is illustrated in Figure 3, which differs only from the embodiment shown in Figure 2, because the fourth section (2231) of the upper cylindrical section (223) is threaded with a second thread pitch (P2) which is smaller than the first thread passage (P2) and the transmission part (3) is provided with a thread for coupling to said thread with the second thread passage of said fourth section (2231) of the section upper cylindrical (223).
En la figura 4 se muestra una posición por así decir "neutra" del útil (1 ) de acuerdo con la segunda forma de realización de la invención aún sin aplicar a un espárrago a montar (E). Puede verse que la pieza de transmisión (3) está parcialmente roscada dentro del tercer tramo (2231 ) de la embocadura (2), de manera que su extremo inferior está enfrentado, por sin entrar en contacto, a la cabeza (40) del tope centrador (4) y estando su vástago de extremidad (41 ), pasando a través de la sección intermedia (221 ) de la embocadura (2) apenas penetrado por su extremo libre dentro de la sección inferior (220) de dicha embocadura. Figure 4 shows a position so to speak "neutral" of the tool (1) according to the second embodiment of the invention even without applying to a stud to be mounted (E). It can be seen that the transmission part (3) is partially threaded into the third section (2231) of the mouth (2), so that its lower end faces, by not coming into contact, the head (40) of the stop centering (4) and its end rod (41) being, passing through the intermediate section (221) of the mouth (2) just penetrated by its free end into the lower section (220) of said mouth.
A continuación y con referencia a las figuras 4 a 6 referidas a la segunda forma de realización según la figura 3, se explicará el funcionamiento del útil tipo llave de acuerdo con la invención aplicable a la primera forma de realización según la figura 2. Partiendo de la posición neutra del útil mostrada en la figura 4, con el giro de la pieza de transmisión (3) en un primer sentido de giro (G1 ) como se ilustra en la figura 5, dicha pieza avanza, de manera que su pasador (32) hace tope sobre un extremo del agujero coliso (23) de la porción de embocadura (2) de modo que dicha pieza de embocadura es arrastrada en dicho sentido de giro por la pieza de transmisión y de esta manera la embocadura (2) se enroscará sobre la extremidad roscada (E1 ) del espárrago a montar; además el avance de la pieza de transmisión hace que el tope centrador (40) se desplace de modo que su vástago de extremidad (41 ) apoya contra el espárrago a montar (E). De esta manera la pieza de transmisión (3) se acopla giratoriamente al espárrago a montar y el par de apriete aplicado en su parte superior (30) puede transmitirse al espárrago a montar merced al acoplamiento a fricción del tope centrador (4) y el espárrago (E). Aquí debe mencionarse que merced a la disposición coaxial según el eje (X), durante el montaje no se generan cargas distintas de cargas axiales de modo que el par de apriete se distribuye uniformemente a través del roscado del espárrago lo que es imprescindible para montajes con par y con par y ángulo. Una vez que el espárrago está montado en una unión de piezas (no mostrada), el útil (1 ) según la invención puede separarse o retirarse del espárrago sin producir el desapriete/descolocación de dicho espárrago/perno. En efecto, como se muestra en la figura 6, con el giro de la pieza de transmisión (3) en el segundo sentido de giro (G2), ésta deja de presionar contra el tope centrador (4) de manera dicho tope centrador ya no apoya forzadamente contra el espárrago (E) ya montado, de modo que dicho giro no se transmite a dicho espárrago, continuando con el giro de la pieza de transmisión (3) en dicho segundo sentido de giro (G2), su pasador (32) hace tope contra el extremo opuesto del agujero coliso (23) de manera que la embocadura (2) es arrastrada, desenroscándose del espárrago (E) ya montado, ello como se ha mencionado anteriormente sin que se ejerza par de desapriete alguno sobre el espárrago montado. En el caso de la segunda forma de realización según la figura 3, este funcionamiento, es posible porque el segundo paso de rosca (P2) del acoplamiento roscado de la pieza de transmisión de par (3) es menor que el primer paso de rosca (P1 ) del acoplamiento roscado de la porción inferior (220) de la embocadura (2) y el extremo roscado (E1 ) del espárrago a montar y porque la fuerza/tensión de apriete tiene un componente axial además del par de apriete. Next, and with reference to Figures 4 to 6 referring to the second embodiment according to Figure 3, the operation of the key type tool according to the invention applicable to the first embodiment according to Figure 2 will be explained. the neutral position of the tool shown in figure 4, with the rotation of the transmission part (3) in a first direction of rotation (G1) as illustrated in figure 5, said part advances, so that its pin (32 ) abutting on one end of the collision hole (23) of the mouth portion (2) so that said mouthpiece is dragged in said direction of rotation by the transmission piece and in this way the mouthpiece (2) will be screwed on the threaded end (E1) of the stud to be mounted; furthermore, the advance of the transmission piece causes the centering stop (40) to move so that its end rod (41) rests against the mounting stud (E). In this way, the transmission part (3) is rotatably coupled to the stud to be mounted and the tightening torque applied to its upper part (30) can be transmitted to the stud to be mounted thanks to the friction coupling of the centering stop (4) and the stud (AND). Here it should be mentioned that thanks to the coaxial arrangement along the axis (X), no different loads of axial loads are generated during assembly so that the tightening torque is distributed evenly through the stud threading which is essential for assemblies with torque and with torque and angle. Once the stud is mounted on a union of parts (not shown), the tool (1) according to the invention can be separated or removed from the stud without causing unfastening / dislocation of said stud / bolt. Indeed, as shown in figure 6, with the rotation of the transmission part (3) in the second direction of rotation (G2), it stops pressing against the centering stop (4) so that said centering stop no longer it is forced against the stud (E) already mounted, so that said rotation is not transmitted to said stud, continuing with the rotation of the transmission part (3) in said second direction of rotation (G2), its pin (32) butt against the opposite end of the collision hole (23) so that the mouth (2) is dragged, unscrewing from the already mounted stud (E), as mentioned above without any torque being exerted on the mounted stud . In the case of the second embodiment according to Figure 3, this operation is possible because the second thread pitch (P2) of the threaded coupling of the torque transmission part (3) is smaller than the first thread pitch ( P1) of the threaded coupling of the lower portion (220) of the mouth (2) and the threaded end (E1) of the stud to be mounted and because the clamping force / tension has an axial component in addition to the tightening torque.
Se apreciará por los expertos en la técnica que podrían realizarse cambios a la realización descrita anteriormente sin apartarse del concepto inventivo de la misma. Se entiende, por lo tanto, que esta invención no está limitada a la realización particular descrita, sino que se pretende cubrir las modificaciones dentro del alcance de la presente invención como se define en la presente descripción, dibujos anexos y siguientes reivindicaciones. It will be appreciated by those skilled in the art that changes could be made to the embodiment described above without departing from the inventive concept thereof. It is understood, therefore, that this invention is not limited to the particular embodiment described, but that it is intended to cover the modifications within the scope of the present invention as defined in the present description, attached drawings and following claims.
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16726349.0A EP3321034B1 (en) | 2015-05-07 | 2016-05-05 | Wrench type tool for the mounting of studs and similar items |
| ES16726349T ES2826379T3 (en) | 2015-05-07 | 2016-05-05 | Wrench type tool for mounting studs and the like |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201530624A ES2589167B1 (en) | 2015-05-07 | 2015-05-07 | Useful type wrench for mounting studs and the like |
| ESP201530624 | 2015-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016177928A1 true WO2016177928A1 (en) | 2016-11-10 |
Family
ID=56096647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2016/070344 Ceased WO2016177928A1 (en) | 2015-05-07 | 2016-05-05 | Wrench type tool for the mounting of studs and similar items |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3321034B1 (en) |
| ES (2) | ES2589167B1 (en) |
| PT (1) | PT3321034T (en) |
| WO (1) | WO2016177928A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810778A (en) * | 2022-04-27 | 2022-07-29 | 广西玉柴机器股份有限公司 | Double-end stud chuck |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1536320A (en) * | 1924-10-02 | 1925-05-05 | Apex Machine Co | Automatic stud driver and releasing mechanism |
| US2351232A (en) * | 1942-03-18 | 1944-06-13 | Schnabolk Samuel | Stud setting and removing tool |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB125298A (en) * | 1918-08-01 | 1919-04-17 | Edwin John Lane | A New or Improved Tool for Inserting and Withdrawing Stud and Stay Bolts. |
| US3769861A (en) * | 1972-05-04 | 1973-11-06 | A Kisle | Stud wrench |
| US4106178A (en) * | 1976-12-10 | 1978-08-15 | Seletyn James P | Threaded stud driving tool |
| DE10340266A1 (en) * | 2003-05-06 | 2004-11-25 | Johannes Franzen | Dowel pin rotator used in mounting and screwing dowel pins, screws dowel pin in and out for rotatably connecting two components to each other |
-
2015
- 2015-05-07 ES ES201530624A patent/ES2589167B1/en not_active Expired - Fee Related
-
2016
- 2016-05-05 ES ES16726349T patent/ES2826379T3/en active Active
- 2016-05-05 PT PT167263490T patent/PT3321034T/en unknown
- 2016-05-05 WO PCT/ES2016/070344 patent/WO2016177928A1/en not_active Ceased
- 2016-05-05 EP EP16726349.0A patent/EP3321034B1/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1536320A (en) * | 1924-10-02 | 1925-05-05 | Apex Machine Co | Automatic stud driver and releasing mechanism |
| US2351232A (en) * | 1942-03-18 | 1944-06-13 | Schnabolk Samuel | Stud setting and removing tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810778A (en) * | 2022-04-27 | 2022-07-29 | 广西玉柴机器股份有限公司 | Double-end stud chuck |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2589167A1 (en) | 2016-11-10 |
| ES2589167B1 (en) | 2017-07-28 |
| ES2826379T3 (en) | 2021-05-18 |
| EP3321034A1 (en) | 2018-05-16 |
| PT3321034T (en) | 2020-10-13 |
| EP3321034B1 (en) | 2020-07-29 |
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