US3565153A - Protective cover for guide paths of machine tools - Google Patents

Protective cover for guide paths of machine tools Download PDF

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Publication number
US3565153A
US3565153A US710385A US3565153DA US3565153A US 3565153 A US3565153 A US 3565153A US 710385 A US710385 A US 710385A US 3565153D A US3565153D A US 3565153DA US 3565153 A US3565153 A US 3565153A
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US
United States
Prior art keywords
cover
protective cover
set forth
cover sheets
energy accumulators
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.)
Expired - Lifetime
Application number
US710385A
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English (en)
Inventor
Kurt Loos
Friedrich Haschek
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.)
Tsubaki Kabelschlepp GmbH
Original Assignee
Kabelschlepp GmbH
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 Kabelschlepp GmbH filed Critical Kabelschlepp GmbH
Application granted granted Critical
Publication of US3565153A publication Critical patent/US3565153A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B23Q11/0825—Relatively slidable coverings, e.g. telescopic
    • 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
    • B23Q2011/0808—Means for maintaining identical distances between relatively movable cover parts

Definitions

  • a protective cover for guide paths of machine tools which comprises a plurality of overlapping cover sheets movable into each other telescopically, and running rollers and slide members, respectively. Each of the cover sheets are supported at the forward end wall with running rollers and slide members, respectively, on the guide path and at the rear end on the next smaller of the cover sheets.
  • a plurality of energy accumulators produce return movement forces during movement out and movement in of the cover sheets from a center position, and are disposed between the cover sheets, and the return movement force is equal to zero in the center position and is greatest in the respective end positions upon moving-out and moving-in, respectively, of the cover sheets.
  • the present invention relates to a protective cover for guide paths for machine tools, in general, and to such protective cover which comprises a plurality of overlapping telescopically moving cover sheets, whereby each of the cover sheets is supported at its front end with running rollers, slide members or the like on the guidepath and at the rear end on the next smaller cover sheet, in particular.
  • Protective covers of this type with cover sheets telescopically movable into each other are known in different embodiments.
  • the telescopiclike, uniform movement of all cover sheets during moving from each other and moving towards each other, respectively, of the protective cover is caused by means of a shear guide, whereby the front end of the shears is pivotally secured to the part reciprocating on the guide path of the machine tool, for instance, a support, and the other end of the shears is secured at the end of the guide path and the cover sheets are pivotally connected to the crossing points of the shear members.
  • These known shear guides has the disadvantage or drawback that the total pulling force and shearing force, respectively, required-for the process of the protective cover must be supplied by the drive of the support. For this reason in the known protective cover with shear guide no great moving speeds are possible.
  • the object aimed at by the present invention is obtained by accumulators disposed between the cover sheets and producing during the movement from each other and towards each other, respectively, from a center position return setting'forces, whereby the return setting force in the center position is equal to zero and is the largest in the end positions reached after moving the cover sheets from eac other or together, respectively.
  • the protective cover formed in accordance with the present invention has the advantage, that while it releases to a great extent the drive, because the energy accumulators release acceleration energy during moving together from the pulled-out end position and by pulling out from the other end position into a center position.
  • the protective cover formed in accordance with the present invention is elastic, as a rubber band and has always the tendency to contract and move apart, respectively, to half of its lengthJn view of this effect the protective cover formed in accordance with the present invention can be moved in its center range, which is mostly used nearly without any inertia.
  • a further advantage resides in the fact, that for moving out from each other and moving together, respectively, of the total protective cover into an end position always only the pretension force of the energy accumulator inserted between two cover sheets must be overcome, because all energy accumulators are disposed in series.
  • two equal energy accumulators are disposed at an angle relative to each other between individual cover sheets and, on the one hand, are pivotally connected at about the center below the upper cover sheet and, on the other hand, on the end wall of the lower cover sheet.
  • the energy accumulators can oscillate about their pivot point on the end walls of the lower cover sheet, it is suitable to provide each end wall within the range of the movement path of the energy accumulator with a recess. Furthermore, it has been found suitable to connect pivotally the energy accumulators disposed at an angle towards each other at the end wall of the cover sheet closely to each other on a joint console secured below the recess at the end wall, while the pivot points at the other end are further removed from each other, so that a V-shaped arrangement is produced which points in the direction towards the end wall.
  • the energy accumulators can in preferred embodiments comprise a pneumatic or hydraulic cylinder, the piston rods of which are equipped witheyes and pivotally connected below the other sheet on the one hand, and on the console, on the other hand.
  • the vacuum can be produced between the two pistons upon pulling out the piston rods.
  • the pistons are equipped suitably with throttle valves.
  • the energy accumulators comprise a guide tube with an inserted pressure spring, or a plurality of inserted blade springs and a pressure rod inserted from both sides, with which are pivotally connected by means of eyes below the cover sheet and on the console, respectively.
  • the energy accumulators can comprise also a rotary rod pivotally connected below the cover sheet with a rotary rod spring disposed on the console.
  • the rotary rod is thereby suitable longitudinally displaceable in guide eyes rotation-free mounted below the cover sheet, while the rotary rod spring is mounted at the lower end safe against rotation with a serration at the upper end mounted rotary-free in the console.
  • thecover sheets are displaced abelastic bands are secured in the center below the cover sheet and outside on the end wall, so that a V-shaped arrangement results open towards the end wall.
  • This embodiment has the advantage that only three pivotal points are required for the pull springs and the elastic bands, respectively, and that they consist of relatively few individual parts. Furthennore, this embodimentoperates nearly free of any wear.
  • FIG. 1 is a perspective view of a completely pulled-out protective cover on a guide path for demonstration of the different energy accumulators with partly broken up cover sheets;
  • FIG. 2 is a perspective view of an end wall with energy accumulator pivotally secured thereto for demonstration of the inserted energy accumulator consisting of a pressure spring and blade springs and a guide tube partly broken away;
  • FIG. 3a is a top plan view of a protective cover with an energy accumulator in the released centered position
  • FIG. 3b is a longitudinal section of the protective cover taken along the lines 3b-3Ii of FIG. 3a, but in the completely pulled-out position;
  • FIG. 30 is a longitudinal section of the protective cover taken along the lines 3c-3c of FIG. 3a, but in the completely collapsed position;
  • FIG. 3d is a section taken along the lines 3d-3d of FIG. 3b;
  • FIG. 4a is a cross section of a cover sheet and an end wall in elevation with energy accumulators consisting of rotary rods and rotary rod springs shown in the released center position;
  • FIG. 4b is a perspective view of the end wall of FIG. 4a with rotary rods and rotary rod springs;
  • FIGS. 6a-6c are top plan views of the protective cover of FIGS. 5a-6c with mirror image pivoted energy accumulators consisting of pull springs or elastic bands shown in the released center position, in the pulled-out position and in the collapsed position.
  • a completely pulled-out protective cover 2 consisting of five cover sheets A, B, C, D and E is disclosed.
  • the cover sheets A, B, C, D and E overlap relative to each other and consist of a cover sheet 3, sidewalls 4 with guides 5 angularly arranged for 90 in the lower range and forward end walls 6.
  • the end wall 6 projects at both ends slightly over the cover sheet 3 and forms there abutment ledges 7. In the center between the abutment ledges 7, the end walls 6 have a recess 8. Between the cover sheets 3 are provided stripping ledges 9, with which the cover sheets A, B, C and D abut on the abutment ledges 7.
  • Running rollers 10 are mounted in the end wall 6, with which running rollers 10 the cover sheets B, C and D support themselves on the guide paths 1a.
  • the protective cover 2 can be secured with the forward end wall 6 of the cover sheet A on a support of a machine tool (not shown), which support is schematically shown by example in FIGS. 3b and 3c.
  • a console 12 is secured on which the last cover sheet E is disposed and over which the entire protective cover 2 can be movedinto each other.
  • energy accumulators 20, 40, 60 or 70 can be provided as they are indicated in FIG. 1.
  • suitably only equal energy accumulators are arranged between the individual cover sheets of the protective cover 2. It is possible, however, also to combine from case to case different energy accumulators.
  • the energy accumulators disclosed in FIG. 2 comprises a guide tube 21 with inserted pull rods 22.
  • Either pressure springs 23 or plate springs 23 can be arranged on the pull rods 22 in the cylinder, which springs support themselves, on the one hand, on a pull plate 25 at the end of the pull rods 22, and, on the other hand, against pressure rings 26 screwable into the ends of the guide tube 21.
  • the pull rods 22 are pivotally connected by means of eyes 27, on the one hand, below the cover sheet 3, and, on the other hand, on a console 28, which is secured in the center on the end wall 6.
  • FIGS. 3a to 3d The path of movement of the energy accumulator 20 during moving out and moving in, respectively, of the protective cover results from the different movement phases shown in FIGS. 3a to 3d in a top plan view and in section, respectively.
  • the energy accumulator 20 In the released center position, according to FIG. 3a, the energy accumulator 20 is disposed in the recesses 8 of the end walls 6. Without any effect from the outside, the total protective cover 2 tends always to slide into this center position.
  • the pretension of the energy accumulator 20 is further increased, so that the drive (not shown) of the support 11 is released, upon moving in of the protective cover 2. It is apparent from FIGS.
  • the force to be used for pretensioning of the total protective cover 2 corresponds thus with the sum of the pretensioning forces of two parallel arranged energy accumulator 20.
  • the energy accumulator shown in FIGS. 4a and 4b comprises substantially a rotary rod 41 and a rotary rod spring 42 which, by means of a serration 43 is connected together safe against rotation.
  • the shaft of the rotary rod 41 is guided displaceably in longitudinal direction in guide eyes 44, which are secured swingably below the cover sheet 3.
  • the rotary rod spring 42 is mounted adjacent the end wall 6 so as to be held at its bottom safe against rotation by a serration 45 at its lower end engaging a console 46.
  • the rod spring 42 is rotatably mounted in the console 46 free for rotation at the end wall 6.
  • the rotary rods 41 are disposed in the recess 8 of the end wall 6.
  • the rotary rods 41 with the guide eyes 44 can swing through the recess 8 of the end wall 6.
  • the energy accumulator 60 comprises a pull spring 61, the end of which can be secured, on the one hand, to a console 62 and, on the other hand, below the cover sheet 3.
  • the energy accumulator 70 comprises an elastic band 71, the ends of which can be secured likewise at the console 62 and below the cover sheet 3.
  • FIGS. 5a, 5b and 5c the movement scheme for these two energy accumulators 60 and 70 is shown, which consists of a pull spring 61 or an elastic band 71. In this case, it is also possible to bring about the V-shaped arrangement of the energy accumulators in such manner, that a pull spring 61 and an elastic band 71, respectively, is pulled through an eyelet 72 secured in the center of the end wall 6.
  • the V-shaped arrangement of the energy accumulators 60 and 70 consisting of a pull spring 61 or an elastic band 71 can also be reversed, however, as it is disclosed in the movement scheme of FIGS. 6a to 6c.
  • the ends of the pull spring 61 and the elastic band 71, respectively, are secured below the cover sheet 3 closely towards each other and on the end wall at the end of the recess 8 adjacent the abutment ledges 7.
  • a protective cover for guide paths of machine tools comprising:
  • each of said cover sheets being supported at the forward end wall with said running rollers and slide members, respectively, on the guide path and at the rear end on the next smaller of said cover sheets;
  • said return movement force being equal to zero in said center position and is greatest in the respective end positions upon moving-out and moving-in, respectively, of said cover sheets.
  • said energy accumulators are disposed at an angle towards each other between said individual cover sheets and are pivotally connected, on the one hand, at about the center of the upper of said cover sheets and on the end wall of the lower of said cover sheets, on the other hand.
  • said end wall of said cover sheets has a recess within the range of the moving path of said energy accumulators.
  • said energy accumulators disposed at an angle towards each other are pivotally connected to the end wall of said cover sheets closely adjacent each other on a joint console secured below said recess on said end wall.
  • each of said energy accumulators comprises a guide tube with an inserted pressure spring and a plurality of inserted plate springs, respectively, and pull rods inserted from both sides;
  • said pull rods are pivotally connected by means of eyes below said cover sheet and on said console.
  • each of said energy accumulators comprise a rotary rod
  • each of said energy accumulators comprises an elastic pivotally secured below said cover sheet with a rotary rod means. spring disposed in said console. 1 l l.
  • the protective cover as set forth inclaim 10, wherein:
  • guide eyes for a longitudinal displacement movement of Said elastic means are p nd fro Said eyelet.
  • each of said energy accumulators comprises an elastic band.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Vibration Dampers (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Pile Receivers (AREA)
US710385A 1967-03-04 1968-03-04 Protective cover for guide paths of machine tools Expired - Lifetime US3565153A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK0061593 1967-03-04

Publications (1)

Publication Number Publication Date
US3565153A true US3565153A (en) 1971-02-23

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Application Number Title Priority Date Filing Date
US710385A Expired - Lifetime US3565153A (en) 1967-03-04 1968-03-04 Protective cover for guide paths of machine tools

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US (1) US3565153A (cg-RX-API-DMAC7.html)
DE (1) DE1575523A1 (cg-RX-API-DMAC7.html)
FR (1) FR1555320A (cg-RX-API-DMAC7.html)
SU (2) SU459880A3 (cg-RX-API-DMAC7.html)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3658113A (en) * 1969-06-27 1972-04-25 Kabelschlepp Gmbh Protective cover for the bed of machine tools
US3751120A (en) * 1970-09-29 1973-08-07 Kabelschlepp Gmbh Device for protecting the guiding path of a machine tool
US3785418A (en) * 1970-04-24 1974-01-15 A Hennig Cover for machine tools
US4039021A (en) * 1974-11-12 1977-08-02 Kabelschlepp Gesellschaft Mit Beschrankter Haftung Protective cover for guiding paths of machine tools
US4475701A (en) * 1982-05-18 1984-10-09 Societe Anonyme Dite: Tissmetal Lionel-Dupont Device for protecting and covering a rail for fixing the seats of a commercial aircraft
US5169223A (en) * 1988-12-24 1992-12-08 Fanuc Ltd. Telescopic cover apparatus
US5570979A (en) * 1994-08-18 1996-11-05 Fanuc Ltd. Telescopic cover for a machine tool
US5807043A (en) * 1997-08-20 1998-09-15 Hennig, Inc. Interlocking machine tool way cover
US6039516A (en) * 1997-07-16 2000-03-21 Diels; H. Wolfgang Extending system
US6116830A (en) * 1995-12-19 2000-09-12 Renault Automation Telescopic protective shield for following the movements of a moving part
EP1074337A1 (en) * 1999-07-30 2001-02-07 P.E.I. Protezioni Elaborazioni Industriali S.r.l. A device for driving and damping telescopic guards
US6488072B1 (en) * 2001-05-31 2002-12-03 Greg Wang Dust cover capable of simultaneous movement in parallel manner
US20030000154A1 (en) * 2001-06-28 2003-01-02 Sanna Ignazio Telescopic covering
EP1410876A1 (en) * 2002-10-17 2004-04-21 Tecnimetal International S.r.L. Telescopic guard particularly for machine tools
US8104849B1 (en) * 2009-07-02 2012-01-31 Claudia Urioste-Risso Expandable table device for diaper changes
EP2708319A1 (en) * 2012-09-17 2014-03-19 P.E.I. Protezioni Elaborazioni Industriali S.r.l. Actuating device for telescopic guards
US20140083244A1 (en) * 2012-09-24 2014-03-27 Okuma Corporation Protective device for sliding surface
US20140238206A1 (en) * 2013-02-26 2014-08-28 Fanuc Corporation Machine tool equipped with movable cover
JP2016179532A (ja) * 2015-03-24 2016-10-13 住友重機械工業株式会社 スライドカバー
US10442045B2 (en) * 2016-09-07 2019-10-15 Fanuc Corporation Telescopic cover and method for adjusting the position of a telescopic cover
US20220048150A1 (en) * 2018-10-23 2022-02-17 Igus Gmbh Telescopic cover for a machine tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU568943B2 (en) * 1984-07-23 1988-01-14 Safetell Security Screens Limited Security screen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1685697A (en) * 1926-07-30 1928-09-25 Nathan M Guinsburg Jack
US2375408A (en) * 1942-11-21 1945-05-08 Giddings & Lewis Machine tool
US2556612A (en) * 1947-09-15 1951-06-12 James L Buntin Cabinet table
CH312320A (de) * 1952-03-04 1955-12-31 Hennig Arnold Harmonikaartiger Faltenbalg.
DE957709C (de) * 1954-02-10 1957-02-07 Arnold Hennig Schutzabdeckung fuer die Fuehrungsbahn von hin- und hergehenden Teilen von Werkzeugmaschinen
DE1050148B (cg-RX-API-DMAC7.html) * 1959-02-05

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1050148B (cg-RX-API-DMAC7.html) * 1959-02-05
US1685697A (en) * 1926-07-30 1928-09-25 Nathan M Guinsburg Jack
US2375408A (en) * 1942-11-21 1945-05-08 Giddings & Lewis Machine tool
US2556612A (en) * 1947-09-15 1951-06-12 James L Buntin Cabinet table
CH312320A (de) * 1952-03-04 1955-12-31 Hennig Arnold Harmonikaartiger Faltenbalg.
DE957709C (de) * 1954-02-10 1957-02-07 Arnold Hennig Schutzabdeckung fuer die Fuehrungsbahn von hin- und hergehenden Teilen von Werkzeugmaschinen

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3658113A (en) * 1969-06-27 1972-04-25 Kabelschlepp Gmbh Protective cover for the bed of machine tools
US3785418A (en) * 1970-04-24 1974-01-15 A Hennig Cover for machine tools
US3751120A (en) * 1970-09-29 1973-08-07 Kabelschlepp Gmbh Device for protecting the guiding path of a machine tool
US4039021A (en) * 1974-11-12 1977-08-02 Kabelschlepp Gesellschaft Mit Beschrankter Haftung Protective cover for guiding paths of machine tools
US4475701A (en) * 1982-05-18 1984-10-09 Societe Anonyme Dite: Tissmetal Lionel-Dupont Device for protecting and covering a rail for fixing the seats of a commercial aircraft
US5169223A (en) * 1988-12-24 1992-12-08 Fanuc Ltd. Telescopic cover apparatus
US5570979A (en) * 1994-08-18 1996-11-05 Fanuc Ltd. Telescopic cover for a machine tool
US6116830A (en) * 1995-12-19 2000-09-12 Renault Automation Telescopic protective shield for following the movements of a moving part
US6039516A (en) * 1997-07-16 2000-03-21 Diels; H. Wolfgang Extending system
US5807043A (en) * 1997-08-20 1998-09-15 Hennig, Inc. Interlocking machine tool way cover
EP1074337A1 (en) * 1999-07-30 2001-02-07 P.E.I. Protezioni Elaborazioni Industriali S.r.l. A device for driving and damping telescopic guards
US6431249B1 (en) * 1999-07-30 2002-08-13 P.E.I. Protezioni Elaborazioni Industriali S.R.L. Device for damping movement of telescopic guards
US6488072B1 (en) * 2001-05-31 2002-12-03 Greg Wang Dust cover capable of simultaneous movement in parallel manner
US20030000154A1 (en) * 2001-06-28 2003-01-02 Sanna Ignazio Telescopic covering
EP1410876A1 (en) * 2002-10-17 2004-04-21 Tecnimetal International S.r.L. Telescopic guard particularly for machine tools
US8104849B1 (en) * 2009-07-02 2012-01-31 Claudia Urioste-Risso Expandable table device for diaper changes
EP2708319A1 (en) * 2012-09-17 2014-03-19 P.E.I. Protezioni Elaborazioni Industriali S.r.l. Actuating device for telescopic guards
US20140083244A1 (en) * 2012-09-24 2014-03-27 Okuma Corporation Protective device for sliding surface
US20140238206A1 (en) * 2013-02-26 2014-08-28 Fanuc Corporation Machine tool equipped with movable cover
JP2016179532A (ja) * 2015-03-24 2016-10-13 住友重機械工業株式会社 スライドカバー
US10442045B2 (en) * 2016-09-07 2019-10-15 Fanuc Corporation Telescopic cover and method for adjusting the position of a telescopic cover
US20220048150A1 (en) * 2018-10-23 2022-02-17 Igus Gmbh Telescopic cover for a machine tool
US12208479B2 (en) * 2018-10-23 2025-01-28 Igus Gmbh Telescopic cover for a machine tool

Also Published As

Publication number Publication date
DE1575523A1 (de) 1970-01-29
SU548195A3 (ru) 1977-02-25
FR1555320A (cg-RX-API-DMAC7.html) 1969-01-24
SU459880A3 (ru) 1975-02-05

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