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WO1987003230A1 - Agencement pour element protecteur utilisable au-dessus d'une aire de travail et permettant de faciliter le mouvement dudit element protecteur et de le bloquer dans une position de protection - Google Patents

Agencement pour element protecteur utilisable au-dessus d'une aire de travail et permettant de faciliter le mouvement dudit element protecteur et de le bloquer dans une position de protection Download PDF

Info

Publication number
WO1987003230A1
WO1987003230A1 PCT/FI1986/000136 FI8600136W WO8703230A1 WO 1987003230 A1 WO1987003230 A1 WO 1987003230A1 FI 8600136 W FI8600136 W FI 8600136W WO 8703230 A1 WO8703230 A1 WO 8703230A1
Authority
WO
WIPO (PCT)
Prior art keywords
shield
advantageously
arrangement
chip
jointed
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.)
Ceased
Application number
PCT/FI1986/000136
Other languages
English (en)
Inventor
Erkki Antero Jaatinen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1987003230A1 publication Critical patent/WO1987003230A1/fr
Priority to FI875146A priority Critical patent/FI875146A7/fi
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
    • F16M11/14—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction with ball-joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B25/00—Accessories or auxiliary equipment for turning-machines
    • B23B25/04—Safety guards specially designed for turning machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
    • F16M11/2021—Undercarriages with or without wheels comprising means allowing pivoting adjustment around a horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P1/00—Safety devices independent of the control and operation of any machine
    • F16P1/02—Fixed screens or hoods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/02—Locking means
    • F16M2200/021—Locking means for rotational movement
    • F16M2200/022—Locking means for rotational movement by friction

Definitions

  • the present invention relates to improvement of work safety and g particularly to an arrangement for a shield to be advantageously .
  • chip-forming machine tools as lathes, cutters, drilling and grinding machines and similar to protect the operator both against flying chips and rotating machine parts.
  • a substantial potential danger factor is also formed by the rotating bed portion, to which the workpiece is fastened, or the rotating working blade.
  • Horizontally settable shields are mainly used in lathes and si ⁇ milar machine tools as a so-called chip shield, in which case the shield can be moved along a horizontal supporting rail.
  • shields of this art are the chip shields described e.g. in the Patent Application FI-820252 and Patent Scriptures FI-65934 and GB-1558513.
  • One of their manor disadvantages is that the security of the machine tool operator cannot be guaran ⁇ teed, if the workable piece extends outside the chip shield,
  • the object of the present invention is to eliminate such disad ⁇ vantages and weaknesses characteristic to previously known shields and to provide an improvement for settable machine tool shields, which above all would facilitate and lighten the trans ⁇ fer of the shield and would enable both rapid locking and swiftly releasable interlock of the shield enhancing thus sig ⁇ nificantly the probability that the shield would also be used in practice.
  • One of the advan.tages of the invention is that the shield can be set and locked to the desired shielding position without any keys or other auxiliary equipment, so that the machine tool operator should only give the right direction for the shield upon its transfer.
  • the lightness in use, simple structure and easy operation of a machine tool shield provided with the arrange ⁇ ment according to the invention give the best guarantee, that this protective device would also be used when the machine tool is operating.
  • FIG. 1 shows as a perspective view a milling machine shield equipped with the arrangement according to the invention to lock the shield and to lighten its transfer
  • FIG. 2 shows as perspective view a lathe shield provided with the arrangement according to the invention to facilitate the turn ⁇ ing of the shield and the locking thereof to the shielding posi ⁇ tion;
  • FIGS 3 and 4 show as partly sectioned side views the bed shield belonging to the lathe shield according to FIG. 2; and FIG. 5 shows as a cross-sectional side view the chip shield be ⁇ longing to the lathe shield of FIG. 2.
  • the shield shown in FIG. 1 is specially intended for cutters.
  • the shield 4 to be transferred to cover a working area is most advantageously composed of a bent metal sheet with about 2 mm thickness including window apertures with about 5 mm security glass to facilitate the observation of the working procedure.
  • the shield 4 has been suspended at the end of an intermediate shaft 1 comprising the first shaft portion 13 and the second shaft portion 14 jointed as turnable relative to each ' other.
  • This joint between the shaft portions 13 and 14 has been pro ⁇ vided with a tightening means e.g. a winged nut, so that the joint can be tightened as immobile. Because of- the lockable shaft portions 13 and 14 the shield can be fitted rapidly and conveniently on the one hand to machine tools with different dimensions and on the other hand the fitting of the shield can fundamentally be facilitated both for frequently repeated simi ⁇ lar and often varying work phases.
  • the other end of the intermediate shaft 1 can be fixed to the frame of the machine tool by a fastener, part 2, preferably comp ⁇ rising two segments, in which case the segments formed as e.g. a U-piece have been axled as rotatable in relation to each ot ⁇ her.
  • the first shaft portion 13 composed of a metal element tapering towards its end away from the fastener part 2 and bent as a U-profile is fixed at its side walls for instance by spindle joints turning like a lever to the lugs of the upper
  • the second shaft portion 14 of the intermediate shaft 1 compri ⁇ ses three bar elements connected by welding to each other and forming an assembly resembling a three-branched letter Y.
  • One branch O ' f this assembly has been jointed to the free, i.e. away from the fastener part 2 turned, end of the first shaft portion, so that the loint in question can be tightened as immobile.
  • One branch of the remaining two of the three-branched assembly has been connected by a spacer 3 to the shield 4 that can be moved over the actual working area and the other branch is formed as a handle facilitating the moving of the shield 4 and acting moreover as a fastening support of the facilities according to the invention lightening the moving of the shield 4.
  • the shield 4 is connected to the second shaft portion 14 by a. spacer 3.
  • a ball-headed projection 15 has been placed to the edge of the shield 4 and the spacer comprises two halves 16 and 17 between the base surfaces of which has been formed recessions corresponding both the end of the second shaft portion 14 and the projection 15-
  • the spacer 3 has also been pro ⁇ vided with a locking means 10, as a tightener screw, winged nut etc., to tighten the halves around the end of the second shaft portion 14 and the projection 15.
  • a locking means 10 as a tightener screw, winged nut etc.
  • the safety means accord ⁇ ing to the invention is provided with lightening means for locking and moving the shield.
  • these means include two telescopically moving power apparatus 8 and 9, e.g. pressure springs, which are commercially available from._several equipment manufacturers.
  • Pressure springs 8 and 9 have been fitted successively in the embodiment accord ⁇ ing to FIG. 1 between the fastener part 2 and the first shaft portion 13.
  • the free end of the pressure spring 8 has been axled to the spindle between two U-pieces of the fastener part 2, which spindle can for this pur- pose be equipped with lugs.
  • a control valve 18 and means 19 to alter the operational space of the control, valve 18. and therefore to lengthen or shorten the pressure springs 8 and 9 and respectively to tilt the intermediate shaft 1 have been fitted betwe.en them.
  • Means 19 for altering the operational state of the control valve 18 comprise according to the preferred embodiment of the inven- tion a hand-operable handle part fastened to the branch of the shaft portion 14 and acting as a gripping handle facilitating the moving of the shield 4, and a transmission organ, e.g. a cable moving inside a mantle pipe and transmitting the movement of the handle part to the control valve 18. Then by pressing the handle part the movement of the mentioned transmission organ opens the control valve 18 and the shield 4 can be transferred to the desired position and by releasing the handle part the shield 4 is locked to its selectee position.
  • a transmission organ e.g. a cable moving inside a mantle pipe
  • the shield shown in FIG. 2 is intended to be fitted to a lathe.
  • the left-hand one functions as a bed shield 5 transferable to the bed part on a slide rail and at that point turnable over the bed part
  • the right-hand one as a chip shield being either transferable on the slide rail or fastened to a blade carriage and moving thus along with the blade carriage to be turned over the working area.
  • the chip shield 6 and the bed shield 5 can thus be moved, either one or both depending on the horizontal extent of the working area, to cover the working area, so that when long pieces are being worked the chip shield 6 covers thus the.working area and the bed shield 5 protects the rotating bed part or blade of the machine tool.
  • both the chip shield 6 and the bed shield 5 have been according to the invention fastened to the supports thereof by a turning mechanism provided with lightening means for their movement.
  • the bed shield 5 shown in FIGS 3 and 4 is composed of a metal sheet with about 2 mm thickness, compressed to a decklike form.
  • the bed shield has been fixed by a turning mechanism 7 comprising advantageously jointed levers and the guides thereof to the car ⁇ riage part 51 moving on a profile rail 52, which acts as a gui ⁇ ded slide on ball bearings, which rail 52 has been supported to a horizontal position behind the lathe.
  • a turning mechanism 7 comprising advantageously jointed levers and the guides thereof to the car ⁇ riage part 51 moving on a profile rail 52, which acts as a gui ⁇ ded slide on ball bearings, which rail 52 has been supported to a horizontal position behind the lathe.
  • the bed shield 5 When the bed shield 5 is out of use, it is lifted to the vertical position and pushed to the left-hand end of the profile rail 52, so that it is ' comp ⁇ letely displaced from the lathe bed.
  • the bed shield 5 When the bed shield 5 is taken to use, it will be
  • the chip shield 6 shown in FIG. 5 is composed of two elements 62 and 63 axled turnably against each other to the closed posi ⁇ tion, whereby the chip shield 6 stands in the ready position shown in FIG. 5 with the unbroken line, and to the opened position, whereby the chip shield is essentially in a horizontal shielding position shown in FIG. 2 by the broken line.
  • Elements of the chip shield 6 have been made of two metal sheets with about 2 mm thick ⁇ ness compressed to a decklike form, one of which sheets comprises a window aperture coated by a laminated glass plate with about 5 mm thickness to facilitate the observation of the working pro ⁇ cedure.
  • the chip shield 6 has been attached by a turning mechanism comprising advantageously intermediate levers 73, 74 and a spring means 8 to the supporting part 6 fixed to the blade carriage of the lathe.
  • a turning mechanism comprising advantageously intermediate levers 73, 74 and a spring means 8 to the supporting part 6 fixed to the blade carriage of the lathe.
  • the chip shield 6 follows the progress of the working procedure being always there, where chipping takes place.
  • the chipping shield 6 is out of use, it is turned to vertical position away from the blade carriage behind the lathe.
  • the chip shield 6 is taken to use it is drawn from its upright ready position over the blade carriage, whereby it guided by the jointed levers is set essentially to a horizontal position over the blade carriage and is locked into the mentioned horizontal position, i.e. shielding position.
  • the jointed levers belonging to the turning mechanism 7 of the bed shield 5 are as follows.
  • the bed shield 5 is fixed to the carriage part 51 by supporting shaft pairs 71 and 72.
  • the first supporting shaft pair 71 has been axled at its one end turnably like a lever to the upper edge of the carriage part 51 and at its other end between the second supporting shaft pair 72.
  • the second supporting shaft pair 72 is fixed stationary to the upper surface of the bed shield 5 and locked at its end near the profile rail 52 to the carriage part 51 by a spindle, for which the carriage part 51 has a vertical guide groove.
  • the turning mechanism of the chip shield 6 comprises intermediate levers 73 and 74 interconnecting the shielding elements 62 and 63 of the chip shield, the movements of which levers determine the movements of the shielding elements 62 and 63 relative to each other and thus the path of the chip shield 6 from the ready position to the shielding position and vice versa.
  • intermediate levers can be used e.g. a jointed pair of levers 73 and 74 shown in FIG. 4, the first end of which is fixed to the first shielding element 62 and the other end to the second shielding element 63.
  • the turning mechanism 7" of the chip shield 6 includes at least one spring means, advantageously a telescopi ⁇ al pressure spring 8 shown in FIG. 4 and axled at its one end to the lug 75 in the supporting part 61 of the chip shield 6 and at its other end to the cantilever part 76 fixed to the shielding ele- ment 62 axled to the carrying part 61.
  • a telescopi ⁇ al pressure spring 8 shown in FIG. 4 and axled at its one end to the lug 75 in the supporting part 61 of the chip shield 6 and at its other end to the cantilever part 76 fixed to the shielding ele- ment 62 axled to the carrying part 61.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

Agencement pour élément protecteur (4) pouvant être orienté au-dessus d'une aire de travail de machines-outils produisant des copeaux, ledit agencement permettant de faciliter le déplacement dudit élément protecteur (4) et de bloquer ce dernier dans une position de protection. Ledit élément protecteur comprend un mécanisme pivotant (1), auquel est joint un organe de levier (13, 14), qui relie l'élément protecteur (4) à une partie de fixation (2) et/ou à une partie de support (51, 61). Ledit élément protecteur comprend également au moins un organe moteur (8, 9) qui agit sur le mécanisme pivotant (1) et un ressort à pression de préférence à déplacement télescopique.
PCT/FI1986/000136 1985-11-26 1986-11-26 Agencement pour element protecteur utilisable au-dessus d'une aire de travail et permettant de faciliter le mouvement dudit element protecteur et de le bloquer dans une position de protection Ceased WO1987003230A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI875146A FI875146A7 (fi) 1986-11-26 1987-11-20 Sovitelma lastuavaan työstökoneeseen kuuluvassa suojassa.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI854665 1985-11-26
FI854665A FI77317C (fi) 1985-11-26 1985-11-26 Skyddanordning saerskilt foer spaonbrytande verktygmaskin.

Publications (1)

Publication Number Publication Date
WO1987003230A1 true WO1987003230A1 (fr) 1987-06-04

Family

ID=8521741

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1986/000136 Ceased WO1987003230A1 (fr) 1985-11-26 1986-11-26 Agencement pour element protecteur utilisable au-dessus d'une aire de travail et permettant de faciliter le mouvement dudit element protecteur et de le bloquer dans une position de protection

Country Status (3)

Country Link
FI (1) FI77317C (fr)
SE (1) SE457437B (fr)
WO (1) WO1987003230A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5302061A (en) * 1991-10-18 1994-04-12 Brother Kogyo Kabushiki Kaisha Door opening and closing device using a robot
GB2300238A (en) * 1995-04-26 1996-10-30 Nick Chen Adjustable safety shield for lathe
US20130255066A1 (en) * 2012-03-27 2013-10-03 Martin Krieg Dual-spindle machining apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1573146A (en) * 1924-02-09 1926-02-16 Milan G Hoyman Shield
US4078451A (en) * 1975-12-01 1978-03-14 Hubert Veare Norton Machine tool guards
DE3320738A1 (de) * 1983-06-09 1984-12-13 Chiron-Werke Gmbh, 7200 Tuttlingen Verkleidung einer werkzeugmaschine mit einer beschickungstuer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1573146A (en) * 1924-02-09 1926-02-16 Milan G Hoyman Shield
US4078451A (en) * 1975-12-01 1978-03-14 Hubert Veare Norton Machine tool guards
DE3320738A1 (de) * 1983-06-09 1984-12-13 Chiron-Werke Gmbh, 7200 Tuttlingen Verkleidung einer werkzeugmaschine mit einer beschickungstuer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5302061A (en) * 1991-10-18 1994-04-12 Brother Kogyo Kabushiki Kaisha Door opening and closing device using a robot
GB2300238A (en) * 1995-04-26 1996-10-30 Nick Chen Adjustable safety shield for lathe
US20130255066A1 (en) * 2012-03-27 2013-10-03 Martin Krieg Dual-spindle machining apparatus
US9120192B2 (en) * 2012-03-27 2015-09-01 Emag Holding Gmbh Dual-spindle machining apparatus

Also Published As

Publication number Publication date
FI77317C (fi) 1989-02-10
SE457437B (sv) 1988-12-27
SE8702949L (sv) 1987-07-24
FI854665L (fi) 1987-05-27
SE8702949D0 (sv) 1987-07-24
FI77317B (fi) 1988-10-31
FI854665A0 (fi) 1985-11-26

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