US3188897A - Split nut for use on a machine tool slide rest controlled by a screw and to an operating device for the same - Google Patents

Split nut for use on a machine tool slide rest controlled by a screw and to an operating device for the same Download PDF

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Publication number
US3188897A
US3188897A US176525A US17652562A US3188897A US 3188897 A US3188897 A US 3188897A US 176525 A US176525 A US 176525A US 17652562 A US17652562 A US 17652562A US 3188897 A US3188897 A US 3188897A
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Prior art keywords
slide rest
nut
screw
shaft
machine tool
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Expired - Lifetime
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US176525A
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English (en)
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Valliere Pierre Francois De
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    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/2025—Screw mechanisms with means to disengage the nut or screw from their counterpart; Means for connecting screw and nut for stopping reciprocating movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G3/00—Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working spindle
    • B23G3/02—Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working spindle for withdrawing or resetting the threading tool
    • B23G3/04—Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working spindle for withdrawing or resetting the threading tool for repeatedly setting the threading tool in a predetermined working position
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • B23Q5/406—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw with means for meshing screw and nut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/19698—Spiral
    • Y10T74/19702—Screw and nut
    • Y10T74/19735—Nut disengageable from screw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2531—Carriage feed
    • Y10T82/2537—Apron mechanism
    • Y10T82/2539—Feednut control

Definitions

  • SPLIT NUT FOR USE ON A MACHINE TOOL SLIDE nnsw CONTROLLED BY A scREw AND TO A" OPERATING DEVICE FOR THE SAME 4 Filed March 1. 1962 2 Sheets-Sheet 2 United States Patent 3,188,897 SPLIT NUT FOR USE ON A MACHINE TOOL SLIDE REST CONTROLLED BY A SCREW AND TO AN OPERATING DEVICE FOR THE SAW Pierre Franeois de Valliere, 14 Ave. de Bretteville,
  • This invention relates to a split nut particularly intended for controlling the travel of a machine tool slide rest, through the medium of a screw and more specifically a feed screw, and the invention relates further to a control means providing interlocking between the act of engagement of said nut on its screw and some other function such as the mechanical feed on a lathe, by operation of a single lever associated with locking means.
  • the split nut has half nuts portions which are controlled by a shaft and guided along a pair of columns, each column of which is rigid with a respective half nut and displaceably and adjustably mounted in the other half nut to allow cross-wise centering of said half nuts.
  • the ends of said columns are mounted in eccentric hearings in the slide rest.
  • control shaft is preferably connected to each halfnut through links rigid with said half-nuts and co-operating, through the medium of corresponding retainers, either with eccentrics rigid with the operating shaft, or with cams inside said retainers, which retainers then act as frames.
  • the control shaft is preferably hollow to enable a second control shaft to extend through it, for controlling mechanical feeds, for example.
  • the heads of the outer shaft and the inner shaft are each rigid with projections, between which is mounted, in freely rotatable manner, a ring which is rigid with an operating lever.
  • Each of said projections is provided with a notch and these two notches co-operate with a stirrup-shaped sliding lock means which surmounts a key mounted slidably in the ring, thereby providing an interlock that enables one of said projections to be clamped immovably by said lock while the other is freed, and which further enables the free projection to be rigidly united with said ring by means of said key.
  • a machine tool equipped with such a device provides improved accuracy in regard to the position of the nut in the slide rest, together with a simpler form of operation which combines two functions that can be rendered operative by means of a single lever.
  • FIG. 1 is a diagrammatic cross-section of a slide rest with its nut engaged on the feed screw;
  • FIG. 2 is a similar sectional view, restricted solely to the nut in the open position
  • FIG. 3 is an alternative embodiment of a portion of FIG. 2;
  • FIG. 4 is a diagrammatic longitudinal section View of the interlock control
  • FIG. 5 is a front elevation view of the control and its locking means
  • FIG. 6 is a further sectional view, taken through a plane perpendicular to that of FIG. 4.
  • a machine tool feed screw 1 which is adapted to displace a slide rest 2 by means of a split nut consisting of two half-nuts 3a 3,l3%,89,7 Fatented June 15, 1965 ice and 3b, each half-nut being rigid with a column 4 slidably mounted in end supports and in a bearing extending through the other half-nut.
  • the said supports consist of bearings 5 and 6 rotatably mounted in the casing 2, the supporting bores for the columns being eccentric with respect to the supporting bores of the bearings 5, 6.
  • the bearing 5 is illustrated, with its locking bolt 7 screwed into the wall of the casing 2 and clamping the corresponding hearings in the selected eccentric position.
  • each half-nut may be adjusted longitudinally with respect to the screw 1, thereby providing desired centering in height as well as in the direction of travel of the slide rest of which the casing 2 forms a part.
  • each half-nut is provided with a slot 8 into which extends a link 9.
  • Each link 9 is mounted on the eccentric stub 10 of a pin 11 the other end of which has a square head for angular adjustment, said pin being adapted to be locked by a screw 13 threaded in a bore in the respective half-nut.
  • each link may be adjusted in position with reference to the corresponding half-nut.
  • each link 9 forms a retainer 14 adapted to co-operate with an eccentric 15.
  • the two ec centrics 15 are rigid with a hollow shaft 16, and the corresponding two eccentrics are .angularly spaced by degrees.
  • the said shaft 16 extends through a half-nut and encircles a shaft 17 which passes through the casing 2.
  • the hollow shaft 16 carries a projection 18 keyed thereto, while the shaft 17 carries a projection 19 which is keyed to it and retained in the end position by a countersunk head screw and a washer.
  • a ring 20 which is rigid with an operating lever 21, said ring being freely rotatable between the projections.
  • On each projection 18 and 19 is provided a notch 22 into which is engageable a respective branch 23 of a lock 24 slidably mounted on a stud 25, which stud is fixed to the wall of the casing 2, parallel to the common axis of the shaft 1'7 and the hollow shaft 16.
  • the two branches 23 of the lock 24 straddle a notched key 26 which is inserted into a hole in the ring 20 and retained therein by a peg 27 projecting into the notch of said key.
  • the lock 24 is susceptible of occupying any of three different positions, as follows:
  • control means further comprises a further shaft rotatably supported in theslide rest in coaxial relation within the first said shaft, an operating ring, a lever integral with said ring, a pair of projections each secured to a respective
  • a movable slide rest comprising a split nut supported on said sliderest and including'two half nuts which may be opened and closed for being respectively disengaged and engaged with said screw, a pair of column supports passing through saidhalf nutseach' secured to a respectivehalf nut while being slidable in the other half nut, eccentric bearing means adjustably sup ported in said slide rest and supporting the columns there-' in and control means for opening'and closing the half nuts.
  • said eccentric bearing means comprises a rotatable ring having an eccentric bore supported for'rotation-in the slide rest and rotatably mounted on the columns at the ends thereof and means for locking'each ring in an adjusted angular position in the sliderest.
  • control means comprises a pin securedin each half nut, a link rotatably supported on each pin, a shaft 'rotatably supported in the slide rest, and means supporting said links from said'shaft.
  • said means supporting said links includes eccentric stubs on said'shaft one for a respective link, each said link having an'opening in which a corresponding stub is retained 5.
  • said means supporting said links includes a pair of cams suptangular outline in which isaccommodated a respective cam.
  • each pin in'therespective half nut comprising means for turning each pin in'therespective half nut, each said pin including an eccentric stub onwhich the corresponding linkis rotatably supported such that the relative positions of said stubs and'said half nuts may be adjusted by turning the pins.
  • said operating ring being rotatably supported betweens'aid projections and means for selectively engaging the operating ring with the projections for common rotation whereby rotation of the shafts maybe controlled by the lever.
  • said means for selectively engaging the operating ring with the projections comprises a slidable lock supported from the slide rest for movement between extended and retracted positions and including branches for respectively engaging the projections such that in the retracted position one of the projections is engaged 'with the ring while the other projection is free while in the extended position the other of the. projections is engaged with the ring and, the said 11.
  • the said means for selectively engaging the operating ring with the projection' comprises a key slidably'mounted in said ring, each of said projections being provided with a notch, a retaining peg situated'between said ring and said key, a lock engaging said key, a guiding stud'for said lock supportedfrom the slide rest, said lock being slidably mounted on said stud for movement in a direction parallel to the said shafts, two branches on said lock straddling said key, said branches and said key being aligned and slidable in said notches such that one of said branches in oneofsaid notches retains thecorresponding projection, as the other branch frees thenotch of the other projection, whereby said key is inserted in said freed notch,thereby interlocking said ring and said other proopenings and stubs have corresponding circular outlines.
  • each link having an opening of reci jection.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Transmission Devices (AREA)
US176525A 1961-03-07 1962-03-01 Split nut for use on a machine tool slide rest controlled by a screw and to an operating device for the same Expired - Lifetime US3188897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR854813A FR1290935A (fr) 1961-03-07 1961-03-07 écrou ouvrant, notamment pour chariot de machine-outil commandé par vis et dispositif de manoeuvre d'un tel écrou

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US3188897A true US3188897A (en) 1965-06-15

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Country Status (4)

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US (1) US3188897A (fr)
CH (1) CH388037A (fr)
FR (1) FR1290935A (fr)
GB (1) GB947008A (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348438A (en) * 1964-05-15 1967-10-24 Peter D George Modular lathes
US4674349A (en) * 1982-03-19 1987-06-23 The Babcock & Wilcox Company Locking mechanism
US4759283A (en) * 1985-07-04 1988-07-26 Alcatel Business Systems Limited Value selection mechanism for postal franking machines
EP1914185A1 (fr) * 2006-10-20 2008-04-23 Brückner Trockentechnik GmbH & Co. KG Dispositif destiné au traitement d'un train de marchandises
CN102235474A (zh) * 2010-03-04 2011-11-09 文卡德埃尔赛弗公司 发动机构
DE102013214221B3 (de) * 2013-04-09 2014-06-18 Johnson Controls Gmbh Vorrichtung und Verfahren zur Blockierung einer Schnellverstellung einer Gewindespindel
US20150135865A1 (en) * 2012-07-03 2015-05-21 Dewertokin Gmbh Device for controlling a furniture drive
CN105413924A (zh) * 2016-01-05 2016-03-23 韦红生 一种使用输气系统排热的板材喷涂工艺的执行方法
CN105413926A (zh) * 2016-01-05 2016-03-23 韦红生 一种由凸条导槽引导的板材喷涂工艺的执行方法
CN105413925A (zh) * 2016-01-05 2016-03-23 韦红生 一种使用减震垫块减少震动的板材喷涂工艺的执行方法
CN105436001A (zh) * 2016-01-05 2016-03-30 舒海球 喷涂速度可调且使用限位传感器限位的板材喷涂工艺的执行方法
CN105436003A (zh) * 2016-01-05 2016-03-30 陈建 使用减震垫块减少震动且用输气系统排热的板材喷涂工艺的执行方法
CN105436000A (zh) * 2016-01-05 2016-03-30 吴笑 一种可接触灯光提示的板材喷涂工艺的执行方法
CN105436002A (zh) * 2016-01-05 2016-03-30 舒海球 可接触报警提示且用输气系统排热的板材喷涂工艺的执行方法
CN105435999A (zh) * 2016-01-05 2016-03-30 吴笑 由凸条导槽引导且喷涂速度可调的板材喷涂工艺的执行方法
CN105457801A (zh) * 2016-01-05 2016-04-06 舒丽燕 一种可接触报警提示的板材喷涂工艺的执行方法
CN105457800A (zh) * 2016-01-05 2016-04-06 尚庆光 一种使用散热翅片导热的板材喷涂工艺的执行方法
CN105457803A (zh) * 2016-01-05 2016-04-06 杨明华 一种使用led照明灯进行维护的板材喷涂工艺的执行方法
CN105457805A (zh) * 2016-01-05 2016-04-06 陈建 利用排风扇散热且用限位传感器限位的板材喷涂工艺的执行方法
CN105554677A (zh) * 2016-01-05 2016-05-04 韦红生 一种使用隔音箱减少噪音的板材喷涂工艺的执行方法
CN105597979A (zh) * 2016-01-05 2016-05-25 舒丽燕 使用限位传感器限位且用led照明灯维护的板材喷涂工艺的执行方法
CN105642482A (zh) * 2016-01-05 2016-06-08 舒海球 一种使用电子控制装置调整喷涂速度的板材喷涂工艺的执行方法
CN105642483A (zh) * 2016-01-05 2016-06-08 陈良忠 一种利用排风扇加速散热的板材喷涂工艺的执行方法
CN105665200A (zh) * 2016-01-05 2016-06-15 吴笑 可接触灯光提示且由凸条导槽引导的板材喷涂工艺的执行方法
CN105665201A (zh) * 2016-01-05 2016-06-15 吴笑 使用限位传感器限位且由凸条导槽引导的板材喷涂工艺的执行方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2044467A5 (fr) * 1969-05-21 1971-02-19 Jeanneret Jules
DE2963870D1 (en) * 1978-02-13 1982-11-25 Keystone Int Manual control apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US379313A (en) * 1888-03-13 Lathe
US1116556A (en) * 1913-05-26 1914-11-10 E L Marsh Nut-making machine and the like.
US1249632A (en) * 1917-03-15 1917-12-11 Oakley Machine Tool Company Grinding-machine.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US379313A (en) * 1888-03-13 Lathe
US1116556A (en) * 1913-05-26 1914-11-10 E L Marsh Nut-making machine and the like.
US1249632A (en) * 1917-03-15 1917-12-11 Oakley Machine Tool Company Grinding-machine.

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348438A (en) * 1964-05-15 1967-10-24 Peter D George Modular lathes
US4674349A (en) * 1982-03-19 1987-06-23 The Babcock & Wilcox Company Locking mechanism
US4759283A (en) * 1985-07-04 1988-07-26 Alcatel Business Systems Limited Value selection mechanism for postal franking machines
EP1914185A1 (fr) * 2006-10-20 2008-04-23 Brückner Trockentechnik GmbH & Co. KG Dispositif destiné au traitement d'un train de marchandises
CN102235474A (zh) * 2010-03-04 2011-11-09 文卡德埃尔赛弗公司 发动机构
CN102235474B (zh) * 2010-03-04 2015-11-25 文卡德埃尔赛弗公司 发动机构
US20150135865A1 (en) * 2012-07-03 2015-05-21 Dewertokin Gmbh Device for controlling a furniture drive
US9671000B2 (en) * 2012-07-03 2017-06-06 Dewertokin Gmbh Device for controlling a furniture drive
DE102013214221B3 (de) * 2013-04-09 2014-06-18 Johnson Controls Gmbh Vorrichtung und Verfahren zur Blockierung einer Schnellverstellung einer Gewindespindel
WO2014166854A1 (fr) 2013-04-09 2014-10-16 Johnson Controls Gmbh Dispositif et procédé de blocage d'un positionnement rapide d'une tige filetée
CN105436000A (zh) * 2016-01-05 2016-03-30 吴笑 一种可接触灯光提示的板材喷涂工艺的执行方法
CN105457803A (zh) * 2016-01-05 2016-04-06 杨明华 一种使用led照明灯进行维护的板材喷涂工艺的执行方法
CN105436001A (zh) * 2016-01-05 2016-03-30 舒海球 喷涂速度可调且使用限位传感器限位的板材喷涂工艺的执行方法
CN105436003A (zh) * 2016-01-05 2016-03-30 陈建 使用减震垫块减少震动且用输气系统排热的板材喷涂工艺的执行方法
CN105413926A (zh) * 2016-01-05 2016-03-23 韦红生 一种由凸条导槽引导的板材喷涂工艺的执行方法
CN105436002A (zh) * 2016-01-05 2016-03-30 舒海球 可接触报警提示且用输气系统排热的板材喷涂工艺的执行方法
CN105435999A (zh) * 2016-01-05 2016-03-30 吴笑 由凸条导槽引导且喷涂速度可调的板材喷涂工艺的执行方法
CN105457801A (zh) * 2016-01-05 2016-04-06 舒丽燕 一种可接触报警提示的板材喷涂工艺的执行方法
CN105457800A (zh) * 2016-01-05 2016-04-06 尚庆光 一种使用散热翅片导热的板材喷涂工艺的执行方法
CN105413925A (zh) * 2016-01-05 2016-03-23 韦红生 一种使用减震垫块减少震动的板材喷涂工艺的执行方法
CN105457805A (zh) * 2016-01-05 2016-04-06 陈建 利用排风扇散热且用限位传感器限位的板材喷涂工艺的执行方法
CN105554677A (zh) * 2016-01-05 2016-05-04 韦红生 一种使用隔音箱减少噪音的板材喷涂工艺的执行方法
CN105597979A (zh) * 2016-01-05 2016-05-25 舒丽燕 使用限位传感器限位且用led照明灯维护的板材喷涂工艺的执行方法
CN105642482A (zh) * 2016-01-05 2016-06-08 舒海球 一种使用电子控制装置调整喷涂速度的板材喷涂工艺的执行方法
CN105642483A (zh) * 2016-01-05 2016-06-08 陈良忠 一种利用排风扇加速散热的板材喷涂工艺的执行方法
CN105665200A (zh) * 2016-01-05 2016-06-15 吴笑 可接触灯光提示且由凸条导槽引导的板材喷涂工艺的执行方法
CN105665201A (zh) * 2016-01-05 2016-06-15 吴笑 使用限位传感器限位且由凸条导槽引导的板材喷涂工艺的执行方法
CN105413924A (zh) * 2016-01-05 2016-03-23 韦红生 一种使用输气系统排热的板材喷涂工艺的执行方法

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Publication number Publication date
FR1290935A (fr) 1962-04-20
GB947008A (en) 1964-01-22
CH388037A (fr) 1965-02-15

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