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EP1695793A1 - Machine for producing a bit of a drill and the drill - Google Patents

Machine for producing a bit of a drill and the drill Download PDF

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Publication number
EP1695793A1
EP1695793A1 EP05405212A EP05405212A EP1695793A1 EP 1695793 A1 EP1695793 A1 EP 1695793A1 EP 05405212 A EP05405212 A EP 05405212A EP 05405212 A EP05405212 A EP 05405212A EP 1695793 A1 EP1695793 A1 EP 1695793A1
Authority
EP
European Patent Office
Prior art keywords
axis
machine according
sector
spindle
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05405212A
Other languages
German (de)
French (fr)
Inventor
Michel Rollier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rollomatic SA
Original Assignee
Rollomatic SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rollomatic SA filed Critical Rollomatic SA
Priority to EP05405212A priority Critical patent/EP1695793A1/en
Priority to PCT/CH2006/000106 priority patent/WO2006089444A1/en
Priority to JP2007556475A priority patent/JP2008531300A/en
Priority to KR1020077021042A priority patent/KR20070100933A/en
Priority to AT06705346T priority patent/ATE494983T1/en
Priority to EP06705346A priority patent/EP1851001B1/en
Priority to DE602006019552T priority patent/DE602006019552D1/en
Priority to CNA2006800060557A priority patent/CN101128283A/en
Priority to TW095105828A priority patent/TW200633812A/en
Publication of EP1695793A1 publication Critical patent/EP1695793A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/247—Supports for drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/26—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills

Definitions

  • the present invention relates to a transfer machine for producing bits or drills.
  • the transfer machines comprise several stations arranged to perform various operations in automated sequences. This is particularly the case for machines intended to ensure the production in large series of small diameter parts such as bits or drills specially designed for so-called PCB operations or the drilling of printed circuits.
  • the production of such drills, intended for consumer industries, requires machines capable of ensuring their production under conditions of efficiency and precision as high as possible.
  • Transfer machines at four or even five stations are common and we know that it is advisable to organize the sequence of operations so as to use only a minimal number of stations and to distribute the different operations according to their durations. , so that the complete cycle time ensures optimum productivity.
  • the present invention relates to a transfer machine at several stations for machining drills characterized in that, to perform successive operations of relief and rear clearance on said drills, it comprises a combined station having a single base and performing both operations in the same position of this base.
  • the drills 1 are mounted in the workpiece clamp of the transfer machine so as to be presented to the tools of the various stations and perform certain rotational movements, according to the programs provided.
  • Each drill has a cylindrical rod 1 (fig.1) on which one recognizes the different effective surfaces that appear after all operations are completed.
  • a helical guide surface 2 divided into two narrow strips, called cylindrical indicators, two flutes 3, resulting from the helical cut, two cylindro-ogival surfaces 4 of relief at the active end of the part , a cylindrical surface 5 of diameter slightly smaller than that of the surfaces 2, forming the rear clearance, this surface being reduced to two helical strips by the goujurage 3 and extending to the rear end of the piece, two portions of surfaces 6 prolonging the relief and corresponding to a sharpening secondary and two pyramidal surfaces 7 extending the guide surfaces 2 and corresponding to a primary sharpening of the tip. All these surfaces are formed by appropriate grinding wheels in the various stations of the machine as indicated above.
  • a fixed base 8 carries a horizontal slide 9 which, when the workpiece 1 and the combined station are in the relative rearward position, moves parallel to the axis of the workpiece.
  • a table 10 On the slide 9 is fixed a table 10 whose flat upper surface has four grooves 11, 12, 13, 14 to rail profile, concentric, of different lengths, and of different diameters.
  • the table 10 At its rear end the table 10 carries a motor frame 15 containing, as will be seen later, a notched pinion drive motor with a vertical axis and two idler gears for moving a quarter-circle plate. 16 forming part of a movable composite support on which is mounted the grinding spindle.
  • the rotating circle sector 16 also visible in FIGS.
  • FIG. 3 shows this provision in detail.
  • the circle sector 16 carries on its rear face four locking pistons 20, 21, 22, 23 T-profile each engaged in one of the grooves 11, 12, 13 and 14. The rotation of this part 16 is perfectly guided concentrically to the axis 19 by the sliding of its lower face on the upper face of the part 10.
  • the lateral surface 18 of the circular sector 16 is a cylindrical surface forming its edge, also centered on the axis 19 and against which is supported a toothed belt 24 whose two ends are fixed at points 25 and 26 on the right-angled sides of the piece 16 leaving sufficient free length for the belt 24 to pass over the notched pinion 27 and the tensioning pinions 28 and 29 of the circle sector drive system 16 (FIG. 3).
  • the frame 15 (FIG. 2) contains a drive motor 49 with a control circuit capable of rotating the driving pinion 27 and rotating at will the circular sector 16 of the movable composite support carrying the pin. This operation is carried out with great precision around the axis of the pivot 19.
  • the pivoting circle sector 16 carries a prismatic support 30 equipped with a vertical slide 31, the movable portion of which comprises a flat plate 32 to which is fixed a spindle support 33 with a hinged lid 34 locking by means of a mechanism 35, which fixes a cylindrical pin 36 so that its axis is perfectly horizontal with respect to the plane of the rotating sector 16.
  • the axis of the pin 36 carries a drive disk 37 , seen partially in section in FIG. 4 and which is integral with a tip 38 with a central extension.
  • Said end piece 38 is arranged so as to form a first pair of surfaces, namely a front surface 39b and an outer cylindrical surface 39.
  • the extension of the endpiece further comprises a housing arranged to form a second pair surfaces, namely an inner cylindrical surface 40, parallel to the surface 39, and a front surface 40b, parallel to the surface 39b.
  • the first pair of surfaces serves as a seat for a first profiled grinding wheel 41 while the second pair of surfaces receives and guides the rear portion of a hub 42 supporting on its cylindrical seat 43 a second profiled grinding wheel 44.
  • a shoulder screw 45 rear and two nuts 46 and 47 respectively fix the hub 42 and the grinding wheels 41 and 44 with respect to the end piece 38 itself secured to the disc 37.
  • Spindle drive motor control 48 is incorporated in the programmed general control of the transfer machine.
  • the two wheels 41 and 44 are perfectly centered on the axis of the spindle, which is itself horizontal.
  • the grinding wheel 41 is adjusted for the relief operation.
  • the axis 19 is in the plane of this wheel and cuts the axis of the spindle.
  • Wheel 44 performs the back clearance operation. It is placed at a distance from the wheel 41 sufficient for the radial displacement of the horizontal slide 9 allows the rear clearance along the entire length of the room.
  • the positions of the various organs of the combined station during the two operations are shown in FIGS. 5 and 6.
  • the position of FIG. 5 corresponds to the calibration.
  • the workpiece being parallel to the direction of movement of the horizontal slide, the angle of the plane of the grinding wheel 41 corresponds to the inclination of the helical surfaces 2.
  • the spindle can be raised or lowered during the operation, if necessary , so as to achieve the surfaces 4.
  • one of the advantages of the present invention is that it makes it possible to add to a transfer machine of a proven type elements which ensure two different operations in the same station.
  • the cutting and sharpening operations are the most time-consuming.
  • the offsetting operation which consists of a short removal of material over a short distance, as well as the clearing operation back only a short removal of material, both require only reduced operation times, the sum of which is less than or equal to the cutting or grinding time. The possibility of grouping the two operations of recalibration and rear clearance in the same station is therefore judicious.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Numerical Control (AREA)
  • Control Of Multiple Motors (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

The machine has a combined terminal carrying out loading, sizing and sharpening operations in the respective terminals. The terminal has a single base (8) and a cylindrical spindle mounted on a movable composite support. The support has a circle sector (16) rotating around a swivel axis (19) on a movable table (10) that is mounted on a horizontal slide (9) of the base. Two coaxial grinding wheels are fixed on the axis of the spindle.

Description

La présente invention concerne une machine transfert pour la production de mèches ou forets.The present invention relates to a transfer machine for producing bits or drills.

Les machines transfert comportent plusieurs stations agencées pour effectuer diverses opérations en séquences automatisées. C'est notamment le cas pour les machines destinées à assurer la production en grandes séries de pièces de petits diamètres comme les mèches ou forets spécialement conçus pour des opérations dites PCB soit le perçage de circuits imprimés. La production de tels forets, destinés à des industries de grande consommation, nécessite des machines capables d'assurer leur production dans des conditions d'efficacité et de précision aussi élevées que possible.The transfer machines comprise several stations arranged to perform various operations in automated sequences. This is particularly the case for machines intended to ensure the production in large series of small diameter parts such as bits or drills specially designed for so-called PCB operations or the drilling of printed circuits. The production of such drills, intended for consumer industries, requires machines capable of ensuring their production under conditions of efficiency and precision as high as possible.

Les opérations successives que doivent effectuer ces machines à chaque cycle sont les suivantes :

  • chargement de l'ébauche de foret
  • taillage du filet (goujure)
  • affûtage
  • détalonnage
  • dégagement arrière (aussi appelé undercut)
  • contrôle de l'outil
  • déchargement.
The successive operations that these machines must perform at each cycle are as follows:
  • loading the drill bit
  • cutting of the net (flute)
  • sharpening
  • undercut
  • rear clearance (also called undercut)
  • tool control
  • unloading.

Les machines transfert à quatre ou même cinq stations sont courantes et on sait qu'il est judicieux d'organiser la séquence des opérations de manière à n'utiliser qu'un nombre minimal de stations et à répartir les différentes opérations en fonction de leurs durées, de manière que le temps du cycle complet assure une productivité optimale.Transfer machines at four or even five stations are common and we know that it is advisable to organize the sequence of operations so as to use only a minimal number of stations and to distribute the different operations according to their durations. , so that the complete cycle time ensures optimum productivity.

Ces règles placent le concepteur devant un certain nombre de difficultés, les solutions qui paraissent judicieuses se heurtant dans certains cas à des impossibilités pratiques. Dans le cas de la production de forets de petit diamètre on peut regrouper le chargement, le contrôle et le déchargement sur une même station équipée d'un robot manipulateur, mais l'utilisation d'une machine à quatre stations n'est alors possible que par le biais d'une opération en reprise pour le dégagement arrière.These rules place the designer in front of a certain number of difficulties, the solutions which appear judicious encountering in certain cases practical impossibilities. In the case of the production of small diameter drills, the loading, the control and the unloading can be grouped on the same station equipped with a manipulator robot, but the use of a machine with four stations is then only possible. through a recovery operation for the rear clearance.

Dans le but de remédier à cette difficulté, la présente invention propose une machine transfert dans laquelle le détalonnage et le dégagement arrière sont réalisés dans la même station de sorte que le cycle de production complet peut se réaliser en quatre stations. La séquence des opérations se détaille dès lors de la façon suivante :

  • Station 1 : chargement
  • Station 2 : taillage
  • Station 3 : affûtage
  • Station 4 : détalonnage et dégagement arrière
  • Station 1 : contrôle de bris d'outils et déchargement.
In order to overcome this difficulty, the present invention proposes a transfer machine in which the offsetting and the rear clearance are made in the same station so that the complete production cycle can be carried out in four stations. The sequence of operations is detailed as follows:
  • Station 1: loading
  • Station 2: cutting
  • Station 3: sharpening
  • Station 4: Calibration and Rear Clearance
  • Station 1: control of broken tools and unloading.

A cet effet, la présente invention concerne une machine transfert à plusieurs stations pour l'usinage de forets caractérisée en ce que, pour effectuer des opérations successives de détalonnage et de dégagement arrière sur les dits forets, elle comporte une station combinée ayant une base unique et effectuant ces deux opérations dans la même position de cette base.To this end, the present invention relates to a transfer machine at several stations for machining drills characterized in that, to perform successive operations of relief and rear clearance on said drills, it comprises a combined station having a single base and performing both operations in the same position of this base.

On décrit ci-après, à titre d'exemple, une forme d'exécution de la machine selon l'invention, les parties de cette machine nécessaires à la compréhension des opérations étant représentées sur le dessin annexé, dans lequel :

  • la fig. 1 est une vue en élévation latérale d'un foret,
  • la fig. 2 est une vue en perspective d'une partie de la machine transfert montrant la station combinée, sans la broche,
  • la fig. 3 est une vue en plan de dessous, montrant le secteur de cercle portant le socle de la broche, avec ses moyens d'entraînement,
  • la fig. 4 est une vue partielle, en perspective, à échelle agrandie, montrant la broche montée sur son socle, et
  • les fig. 5 et 6 sont des vues en perspectives de la station combinée dans ses deux positions de travail, la base et la coulisse horizontale étant dans les mêmes positions.
An embodiment of the machine according to the invention is described below by way of example, the parts of this machine necessary for the understanding of the operations being shown in the appended drawing, in which:
  • fig. 1 is a side elevational view of a drill,
  • fig. 2 is a perspective view of a portion of the transfer machine showing the combined station, without the spindle,
  • fig. 3 is a plan view from below, showing the sector of circle carrying the base of the spindle, with its drive means,
  • fig. 4 is a partial view, in perspective, on an enlarged scale, showing the pin mounted on its base, and
  • figs. 5 and 6 are perspective views of the combined station in its two working positions, the base and the horizontal slide being in the same positions.

Les forets 1 sont montés dans la pince porte-pièce de la machine transfert de façon à pouvoir être présentés aux outils des différentes stations et effectuer certains mouvements de rotation, selon les programmes prévus. Chaque foret comporte une tige cylindrique 1 (fig.1) sur laquelle on reconnaît les différentes surfaces efficaces qui apparaissent une fois toutes les opérations terminées. Leurs dénominations sont les suivantes : une surface hélicoïdale de guidage 2 divisée en deux bandes de faible largeur, appelées témoins cylindriques, deux goujures 3, résultant du taillage en hélice, deux surfaces cylindro-ogivales 4 de détalonnage à l'extrémité active de la pièce, une surface cylindrique 5 de diamètre légèrement inférieur à celui des surfaces 2, formant le dégagement arrière, cette surface étant réduite à deux bandes hélicoïdales par le goujurage 3 et s'étendant jusqu'à l'extrémité arrière de la pièce, deux portions de surfaces 6 prolongeant le détalonnage et correspondant à un affûtage secondaire et deux surfaces pyramidales 7 prolongeant les surfaces 2 de guidage et correspondant à un affûtage primaire de la pointe. Toutes ces surfaces sont formées par des meules de rectifiage appropriées dans les différentes stations de la machine comme indiqué précédemment.The drills 1 are mounted in the workpiece clamp of the transfer machine so as to be presented to the tools of the various stations and perform certain rotational movements, according to the programs provided. Each drill has a cylindrical rod 1 (fig.1) on which one recognizes the different effective surfaces that appear after all operations are completed. Their denominations are as follows: a helical guide surface 2 divided into two narrow strips, called cylindrical indicators, two flutes 3, resulting from the helical cut, two cylindro-ogival surfaces 4 of relief at the active end of the part , a cylindrical surface 5 of diameter slightly smaller than that of the surfaces 2, forming the rear clearance, this surface being reduced to two helical strips by the goujurage 3 and extending to the rear end of the piece, two portions of surfaces 6 prolonging the relief and corresponding to a sharpening secondary and two pyramidal surfaces 7 extending the guide surfaces 2 and corresponding to a primary sharpening of the tip. All these surfaces are formed by appropriate grinding wheels in the various stations of the machine as indicated above.

On décrit maintenant la station combinée de détalonnage et de dégagement arrière, représentée en perspective à la fig. 2. Une base fixe 8 porte une coulisse horizontale 9 qui, lorsque la pièce à usiner 1 et la station combinée sont en position relative de dégagement arrière, se déplace i parallèlement à l'axe de la pièce. Sur la coulisse 9 est fixée une table 10 dont la surface supérieure plane présente quatre rainures 11, 12, 13, 14 à profil en rail, concentriques, de différentes longueurs, et de différents diamètres. A son extrémité arrière la table 10 porte un bâti de moteur 15 contenant, comme on le verra plus loin, un moteur d'entraînement à pignon cranté d'axe vertical et deux pignons tendeurs de déplacement d'une plaque en forme de quart de cercle 16 faisant partie d'un support composite mobile sur lequel est montée la broche porte-meules. Le secteur de cercle pivotant 16, également visible aux fig. 3 à 7, comporte une branche radiale 17. A son extrémité celle-ci est percée d'un trou pour l'engagement d'un pivot d'axe vertical 19 fixé à la table 10 précisément au point central des rainures 11 à 14. La fig. 3 montre cette disposition en détail. Le secteur de cercle 16 porte sur sa face arrière quatre pistons de blocage 20, 21, 22, 23 à profil en T engagés chacun dans une des rainures 11, 12, 13 et 14. La rotation de cette pièce 16 est parfaitement guidée concentriquement à l'axe 19 par le glissement de sa face inférieure sur la face supérieure de la pièce 10. La surface latérale 18 du secteur de cercle 16 est une surface cylindrique formant sa tranche, également centrée sur l'axe 19 et contre laquelle est appuyée une courroie crantée 24 dont les deux extrémités sont fixées aux points 25 et 26 sur les côtés à angle droit de la pièce 16 en laissant suffisamment de longueur libre pour que la courroie 24 puisse passer sur le pignon cranté 27 et sur les pignons tendeurs 28 et 29 du système d'entraînement du secteur de cercle 16 (fig. 3). On comprend que le bâti 15 (fig.2) contient un moteur d'entraînement 49 avec un circuit de commande capable de faire tourner le pignon moteur 27 et pivoter à volonté le secteur de cercle 16 du support composite mobile portant la broche. Cette opération se réalise avec grande précision autour de l'axe du pivot 19.The combined relief and recess station, shown in perspective in FIG. 2. A fixed base 8 carries a horizontal slide 9 which, when the workpiece 1 and the combined station are in the relative rearward position, moves parallel to the axis of the workpiece. On the slide 9 is fixed a table 10 whose flat upper surface has four grooves 11, 12, 13, 14 to rail profile, concentric, of different lengths, and of different diameters. At its rear end the table 10 carries a motor frame 15 containing, as will be seen later, a notched pinion drive motor with a vertical axis and two idler gears for moving a quarter-circle plate. 16 forming part of a movable composite support on which is mounted the grinding spindle. The rotating circle sector 16, also visible in FIGS. 3 to 7, comprises a radial branch 17. At its end thereof is pierced with a hole for the engagement of a pivot of vertical axis 19 fixed to the table 10 precisely at the central point of the grooves 11 to 14. Fig. 3 shows this provision in detail. The circle sector 16 carries on its rear face four locking pistons 20, 21, 22, 23 T-profile each engaged in one of the grooves 11, 12, 13 and 14. The rotation of this part 16 is perfectly guided concentrically to the axis 19 by the sliding of its lower face on the upper face of the part 10. The lateral surface 18 of the circular sector 16 is a cylindrical surface forming its edge, also centered on the axis 19 and against which is supported a toothed belt 24 whose two ends are fixed at points 25 and 26 on the right-angled sides of the piece 16 leaving sufficient free length for the belt 24 to pass over the notched pinion 27 and the tensioning pinions 28 and 29 of the circle sector drive system 16 (FIG. 3). It will be understood that the frame 15 (FIG. 2) contains a drive motor 49 with a control circuit capable of rotating the driving pinion 27 and rotating at will the circular sector 16 of the movable composite support carrying the pin. This operation is carried out with great precision around the axis of the pivot 19.

En se référant aux fig. 2 et 4 on voit que le secteur de cercle pivotant 16 porte un support prismatique 30 équipé d'une coulisse verticale 31, dont la partie mobile comporte une plaque plane 32 à laquelle est fixé un support de broche 33 avec un couvercle articulé 34 se verrouillant au moyen d'un mécanisme 35, qui fixe une broche cylindrique 36 de manière que son axe soit parfaitement horizontal par rapport au plan du secteur tournant 16. A son extrémité avant, l'axe de la broche 36 porte un disque d'entraînement 37, vu partiellement en coupe à la fig. 4 et dont est solidaire un embout 38 avec un prolongement central. Le dit embout 38 est agencé de façon à constituer un premier couple de surfaces, à savoir une surface frontale 39b et une surface cylindrique externe 39. Le prolongement de l'embout comporte d'autre part un logement agencé de façon à constituer un second couple de surfaces, à savoir une surface cylindrique interne 40, parallèle à la surface 39, et une surface frontale 40b, parallèle à la surface 39b. Le premier couple de surfaces sert d'assise à une première meule profilée 41 tandis que le second couple de surfaces reçoit et guide la partie arrière d'un moyeu 42 supportant sur son assise cylindrique 43 une seconde meule profilée 44. Une vis 45 à épaulement arrière et deux écrous 46 et 47 fixent respectivement le moyeu 42 et les meules 41 et 44 par rapport à l'embout 38 lui-même solidaire du disque 37. La commande du moteur 48 d'entraînement de la broche 36 est incorporée à la commande générale programmée de la machine transfert. Les deux meules 41 et 44 sont parfaitement centrées sur l'axe de la broche, lequel est lui-même horizontal. La meule 41 est ajustée pour l'opération de détalonnage. L'axe 19 se trouve dans le plan de cette meule et coupe l'axe de la broche. La meule 44 effectue l'opération de dégagement arrière. Elle est placée à une distance de la meule 41 suffisante pour que le déplacement radial de la coulisse horizontale 9 permette le dégagement arrière sur toute la longueur de la pièce. Les positions des divers organes de la station combinée lors des deux opérations sont représentées aux fig. 5 et 6. La position de la fig. 5 correspond au détalonnage. La pièce à usiner étant parallèle au sens de déplacement de la coulisse horizontale, l'angle du plan de la meule 41 correspond à l'inclinaison des surfaces hélicoïdales 2. La broche peut être élevée ou abaissée au cours de l'opération, si nécessaire, de manière à réaliser les surfaces 4. Pour le dégagement arrière il faut amener la broche dans la position de la fig. 6, son axe étant parallèle à celui de la pièce. Le plan de la meule 44 est alors perpendiculaire à cet axe et le déplacement de la coulisse horizontale, combiné à la rotation de l'outil, assure l'enlèvement de matière sur la périphérie du noyau du foret, jusqu'à la profondeur voulue pour la formation des surfaces 5.Referring to FIGS. 2 and 4 it can be seen that the pivoting circle sector 16 carries a prismatic support 30 equipped with a vertical slide 31, the movable portion of which comprises a flat plate 32 to which is fixed a spindle support 33 with a hinged lid 34 locking by means of a mechanism 35, which fixes a cylindrical pin 36 so that its axis is perfectly horizontal with respect to the plane of the rotating sector 16. At its front end, the axis of the pin 36 carries a drive disk 37 , seen partially in section in FIG. 4 and which is integral with a tip 38 with a central extension. Said end piece 38 is arranged so as to form a first pair of surfaces, namely a front surface 39b and an outer cylindrical surface 39. The extension of the endpiece further comprises a housing arranged to form a second pair surfaces, namely an inner cylindrical surface 40, parallel to the surface 39, and a front surface 40b, parallel to the surface 39b. The first pair of surfaces serves as a seat for a first profiled grinding wheel 41 while the second pair of surfaces receives and guides the rear portion of a hub 42 supporting on its cylindrical seat 43 a second profiled grinding wheel 44. A shoulder screw 45 rear and two nuts 46 and 47 respectively fix the hub 42 and the grinding wheels 41 and 44 with respect to the end piece 38 itself secured to the disc 37. Spindle drive motor control 48 is incorporated in the programmed general control of the transfer machine. The two wheels 41 and 44 are perfectly centered on the axis of the spindle, which is itself horizontal. The grinding wheel 41 is adjusted for the relief operation. The axis 19 is in the plane of this wheel and cuts the axis of the spindle. Wheel 44 performs the back clearance operation. It is placed at a distance from the wheel 41 sufficient for the radial displacement of the horizontal slide 9 allows the rear clearance along the entire length of the room. The positions of the various organs of the combined station during the two operations are shown in FIGS. 5 and 6. The position of FIG. 5 corresponds to the calibration. The workpiece being parallel to the direction of movement of the horizontal slide, the angle of the plane of the grinding wheel 41 corresponds to the inclination of the helical surfaces 2. The spindle can be raised or lowered during the operation, if necessary , so as to achieve the surfaces 4. For the rear clearance it is necessary to bring the pin in the position of FIG. 6, its axis being parallel to that of the part. The plane of the wheel 44 is then perpendicular to this axis and the displacement of the horizontal slide, combined with the rotation of the tool, ensures the removal of material on the periphery of the core of the drill, to the desired depth for the formation of surfaces 5.

Comme on le voit, un des avantages de la présente invention est qu'il permet d'adjoindre à une machine transfert d'un type éprouvé des éléments qui assurent deux opérations différentes dans une même station. En particulier, dans les machines de transfert pour la production de forets de petits diamètres, les opérations de taillage et d'affûtage sont les plus gourmandes en temps. En revanche, l'opération de détalonnage, qui consiste en un faible enlèvement de matière sur une courte distance, de même que l'opération de dégagement arrière qui consiste en un faible enlèvement de matière, ne nécessitent toutes deux que des temps d'opération réduits, dont la somme est inférieure ou égale au temps de taillage ou d'affûtage. La possibilité de grouper les deux opérations de détalonnage et de dégagement arrière dans une même station se révèle par conséquent judicieuse. En d'autres termes l'idée de réaliser une station combinée effectuant deux opérations successives et distinctes permet d'organiser le travail de la machine en améliorant l'efficacité d'ensemble, tout en conservant les qualités de précision de la machine de base. Il suffit que cette dernière soit une machine à quatre stations. Par ailleurs la conformation générale de la machine n'est pas critique. Les stations peuvent être montées sur un carrousel d'axe vertical ou horizontal, tournant autour de la pince porte-pièce ou disposées différemment.As can be seen, one of the advantages of the present invention is that it makes it possible to add to a transfer machine of a proven type elements which ensure two different operations in the same station. In particular, in the transfer machines for the production of small diameter drills, the cutting and sharpening operations are the most time-consuming. In contrast, the offsetting operation, which consists of a short removal of material over a short distance, as well as the clearing operation back only a short removal of material, both require only reduced operation times, the sum of which is less than or equal to the cutting or grinding time. The possibility of grouping the two operations of recalibration and rear clearance in the same station is therefore judicious. In other words the idea of producing a combined station performing two successive and distinct operations makes it possible to organize the work of the machine by improving the overall efficiency, while maintaining the precision qualities of the basic machine. It is enough that this last is a machine with four stations. Moreover, the general conformation of the machine is not critical. The stations can be mounted on a carousel of vertical or horizontal axis, rotating around the workpiece clamp or arranged differently.

Claims (11)

Machine transfert à plusieurs stations destinée à l'usinage de forets, caractérisée en ce que, pour effectuer des opérations successives de détalonnage et de dégagement arrière sur les dits forets, elle comporte une station combinée ayant une base unique (8) et effectuant ces deux opérations dans la même position de cette base.Multi-station transfer machine for the machining of drills, characterized in that , to perform successive operations of recalibration and rear clearance on said drills, it comprises a combined station having a single base (8) and performing both operations in the same position of this base. Machine selon la revendication 1, caractérisée en ce que la dite station combinée comporte une broche rotative (36) montée sur un support composite mobile (9, 10, 16, 30, 32) soumis à l'action d'une commande numérique, et en ce que deux meules coaxiales (41, 44) sont fixées sur l'axe de la broche.Machine according to claim 1, characterized in that said combined station comprises a rotating spindle (36) mounted on a movable composite support (9, 10, 16, 30, 32) subjected to the action of a numerical control, and in that two coaxial wheels (41, 44) are fixed on the axis of the spindle. Machine selon la revendication 2, caractérisée en ce que le support composite mobile comporte un secteur de cercle (16) monté de façon à pivoter autour d'un axe vertical (19) sur une table (10) mobile sur la base (8), une structure verticale (30, 31) solidaire du secteur de cercle (16) et une coulisse verticale (32) mobile sur la dite structure (30, 31) et portant la broche (36), l'axe de cette dernière étant horizontal.Machine according to claim 2, characterized in that the movable composite support comprises a circle sector (16) mounted to pivot about a vertical axis (19) on a table (10) movable on the base (8), a vertical structure (30, 31) integral with the circle sector (16) and a vertical slide (32) movable on said structure (30, 31) and carrying the pin (36), the axis of the latter being horizontal. Machine selon la revendication 3, caractérisée en ce que l'une (41) des deux meules fixées sur l'axe de la broche étant une meule de détalonnage, l'agencement du support composite est tel que l'axe de pivotement (19) du secteur de cercle (16) coupe l'axe de la broche dans le plan de cette meule.Machine according to claim 3, characterized in that one (41) of the two wheels fixed on the axis of the spindle is a grinding wheel, the arrangement of the composite support is such that the pivot axis (19) the circle sector (16) intersects the axis of the spindle in the plane of this wheel. Machine selon la revendication 3, caractérisée en ce que la table (10) est montée sur une coulisse horizontale (9) se déplaçant dans une direction qui, pour une position déterminée du secteur de cercle, est parallèle à l'axe de la broche, la coulisse (9) étant supportée et guidée par la dite base (8).Machine according to claim 3, characterized in that the table (10) is mounted on a horizontal slide (9) moving in a direction which, for a given position of the circle sector, is parallel to the axis of the pin, the slide (9) being supported and guided by said base (8). Machine selon la revendication 3, caractérisée en ce que la table (10) montée sur la coulisse horizontale (9) de la base (8) comporte plusieurs rainures en arc de cercle (11 à 14) centrées sur l'axe de pivotement (19) du secteur de cercle, ce dernier étant équipé, dans sa face tournée vers la dite table, de pistons de blocage (20 à 23) à profils en T engagés dans les dites rainures pour assurer le blocage (passif) du secteur (16).Machine according to claim 3, characterized in that the table (10) mounted on the horizontal slide (9) of the base (8) has a plurality of arcuate grooves (11 to 14) centered on the pivot axis (19). ) of the circle sector, the latter being equipped, in its face facing said table, T-profile locking pistons (20 to 23) engaged in said grooves to ensure the blocking (passive) of the sector (16) . Machine selon les revendications 4 et 5, caractérisée en ce que la seconde meule (44) étant une meule de dégagement arrière et étant fixée coaxialement devant la meule de détalonnage (41) sur l'axe de la broche (36), la dite position déterminée du secteur de cercle est celle qui correspond à l'opération de dégagement arrière, l'axe de la broche étant parallèle à la direction de déplacement de la coulisse horizontale (9) sur la base (8).Machine according to claims 4 and 5, characterized in that the second grinding wheel (44) is a rear release grinding wheel and being coaxially fixed in front of the grinding wheel (41) on the axis of the spindle (36), said position determined from the circle sector is that corresponding to the rear clearance operation, the axis of the spindle being parallel to the direction of movement of the horizontal slide (9) on the base (8). Machine selon les revendications 4 et 5, caractérisée en ce que le secteur de cercle (16) est relié à la table (10) par un axe de pivotement vertical (19), des pistons de blocage (20 à 23) et par un système d'entraînement (15) supporté par la table, constitué lui-même d'un moteur (49) à pignon cranté (27) d'axe vertical placé entre deux pignons tendeurs (28, 29), et d'une courroie (24) plaquée contre la tranche (18) en arc de cercle du secteur (16), fixée par ses deux extrémités à cette tranche et passant dans le système d'entraînement formé par le pignon cranté et ses deux pignons tendeurs.Machine according to claims 4 and 5, characterized in that the circular sector (16) is connected to the table (10) by a vertical pivot axis (19), locking pistons (20 to 23) and by a system drive (15) supported by the table itself consisting of a notched pinion motor (49) having a vertical axis between two tensioning gears (28, 29) and a belt (24). ) pressed against the wafer (18) in an arc of the sector (16), fixed at both ends to this wafer and passing into the drive system formed by the notched pinion and its two tensioning gears. Machine selon la revendication 8, caractérisée en ce que le système(15) d'entraînement du secteur de cercle (16) est agencé de telle manière que, par rotation de ce secteur autour de son axe de pivotement (19), l'axe de la broche porte meules puisse être amené dans une orientation qui fait avec la direction de déplacement de la coulisse horizontale (9) un angle correspondant environ à l'inclinaison des spires des filets (2) du foret par rapport à l'axe de ce dernier, de manière à passer de l'opération de détalonnage à l'opération de dégagement arrière ou vice versa.Machine according to claim 8, characterized in that the circular sector drive system (15) (16) is arranged in such a way that, by rotation of this sector around its pivot axis (19), the axis of the grinding spindle can be brought into an orientation which makes with the direction of movement of the horizontal slide (9) an angle corresponding approximately to the inclination of the turns of the threads (2) of the drill relative to the axis of the latter, so as to go from the calibration operation to the rear clearance operation or vice versa. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que le système (15) d'entraînement en rotation du secteur de cercle (16) possède un moteur (49) à commande numérique.Machine according to any one of the preceding claims, characterized in that the system (15) for rotating the circle sector (16) has a motor (49) with numerical control. Machine selon la revendication 10, caractérisée en ce que la commande des opérations de détalonnage et de dégagement arrière est incorporée à un programme entièrement automatique de commande de la machine transfert permettant la production automatisée des forets.Machine according to claim 10, characterized in that the control of the back-off and back-off operations is incorporated in a fully automatic transfer machine control program for the automated production of the drills.
EP05405212A 2005-02-25 2005-02-25 Machine for producing a bit of a drill and the drill Withdrawn EP1695793A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP05405212A EP1695793A1 (en) 2005-02-25 2005-02-25 Machine for producing a bit of a drill and the drill
PCT/CH2006/000106 WO2006089444A1 (en) 2005-02-25 2006-02-17 Transfer machine for producing drills and bits
JP2007556475A JP2008531300A (en) 2005-02-25 2006-02-17 Transfer machine for drill or drill bit production
KR1020077021042A KR20070100933A (en) 2005-02-25 2006-02-17 Automatic machine tools for manufacturing drills and drill bits
AT06705346T ATE494983T1 (en) 2005-02-25 2006-02-17 TRANSFER MACHINE FOR PRODUCING DRILLS AND BITS
EP06705346A EP1851001B1 (en) 2005-02-25 2006-02-17 Transfer machine for producing drills and bits
DE602006019552T DE602006019552D1 (en) 2005-02-25 2006-02-17 TRANSFER MACHINE FOR MAKING DRILLS AND BITS
CNA2006800060557A CN101128283A (en) 2005-02-25 2006-02-17 Transfer machine for producing drills and bits
TW095105828A TW200633812A (en) 2005-02-25 2006-02-21 Transfer machine for the production of drills or drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405212A EP1695793A1 (en) 2005-02-25 2005-02-25 Machine for producing a bit of a drill and the drill

Publications (1)

Publication Number Publication Date
EP1695793A1 true EP1695793A1 (en) 2006-08-30

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EP05405212A Withdrawn EP1695793A1 (en) 2005-02-25 2005-02-25 Machine for producing a bit of a drill and the drill
EP06705346A Not-in-force EP1851001B1 (en) 2005-02-25 2006-02-17 Transfer machine for producing drills and bits

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06705346A Not-in-force EP1851001B1 (en) 2005-02-25 2006-02-17 Transfer machine for producing drills and bits

Country Status (8)

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EP (2) EP1695793A1 (en)
JP (1) JP2008531300A (en)
KR (1) KR20070100933A (en)
CN (1) CN101128283A (en)
AT (1) ATE494983T1 (en)
DE (1) DE602006019552D1 (en)
TW (1) TW200633812A (en)
WO (1) WO2006089444A1 (en)

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CN117506653A (en) * 2024-01-08 2024-02-06 烟台精诚制版模具科技有限公司 Deburring device for gilt version cnc engraving and milling machine
CN118268625A (en) * 2024-06-03 2024-07-02 三明市鸿丰机械设备制造有限公司 Drilling device and drilling method for gear pump cover machining

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CN102632436B (en) * 2012-04-23 2014-06-11 郝玉民 Blade grinding machine for external conical surface of drill
US10219068B2 (en) 2015-07-16 2019-02-26 Voyetra Turtle Beach, Inc. Headset with major and minor adjustments
KR101874088B1 (en) * 2016-09-29 2018-07-10 (주)서진정공 Finishing apparatus adjustable angle and distance for plate phase parts, and method using the same
TWI681835B (en) 2018-04-09 2020-01-11 瑞士商瑞士路勞曼迪有限公司 Method and grinding machine for fabricating a workpiece comprising a helical groove and a program for controlling the grinding machine
CN109531078B (en) * 2019-01-14 2020-10-13 中国航发哈尔滨轴承有限公司 Processing method of phenolic aldehyde rubberized fabric separated entity retainer
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CN117506653A (en) * 2024-01-08 2024-02-06 烟台精诚制版模具科技有限公司 Deburring device for gilt version cnc engraving and milling machine
CN117506653B (en) * 2024-01-08 2024-03-12 烟台精诚制版模具科技有限公司 Deburring device for gilt version cnc engraving and milling machine
CN118268625A (en) * 2024-06-03 2024-07-02 三明市鸿丰机械设备制造有限公司 Drilling device and drilling method for gear pump cover machining

Also Published As

Publication number Publication date
ATE494983T1 (en) 2011-01-15
CN101128283A (en) 2008-02-20
KR20070100933A (en) 2007-10-12
JP2008531300A (en) 2008-08-14
EP1851001B1 (en) 2011-01-12
DE602006019552D1 (en) 2011-02-24
WO2006089444A1 (en) 2006-08-31
TW200633812A (en) 2006-10-01
EP1851001A1 (en) 2007-11-07

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