US3824877A - Indexing workpiece supporting apparatus - Google Patents

Indexing workpiece supporting apparatus Download PDF

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Publication number
US3824877A
US3824877A US00394099A US39409973A US3824877A US 3824877 A US3824877 A US 3824877A US 00394099 A US00394099 A US 00394099A US 39409973 A US39409973 A US 39409973A US 3824877 A US3824877 A US 3824877A
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United States
Prior art keywords
inner shaft
shaft
casing
recess
lateral
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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
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US00394099A
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English (en)
Inventor
J Mazue
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Individual
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Individual
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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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/04—Indexing equipment having intermediate members, e.g. pawls, for locking the relatively movable parts in the indexed position
    • B23Q16/06—Rotary indexing
    • B23Q16/065—Rotary indexing with a continuous drive
    • 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
    • Y10T74/14—Rotary member or shaft indexing, e.g., tool or work turret
    • Y10T74/1406—Rotary member or shaft indexing, e.g., tool or work turret with safety device or drive disconnect
    • 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
    • Y10T74/14—Rotary member or shaft indexing, e.g., tool or work turret
    • Y10T74/1418—Preselected indexed position
    • Y10T74/1424—Sequential
    • Y10T74/1441—Geneva or mutilated gear drive
    • 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
    • Y10T74/14—Rotary member or shaft indexing, e.g., tool or work turret
    • Y10T74/1418—Preselected indexed position
    • Y10T74/1424—Sequential
    • Y10T74/1453—Interlocked rotator and brake
    • Y10T74/1459—Diverse-type brakes
    • Y10T74/1465—Diverse-type brakes with axially acting friction brake

Definitions

  • interchangeable gears and the Geneva cross gearing are disposed in opposed lateral recesses of the casing and are easily accessible through removable covers.
  • the present invention relates to indexing workpiece supporting apparatus of the kind comprising a rotatable supporting plate mounted on a casing which encloses a step-by-step advancing mechanism, such as a Geneva cross gearing, and a set of interchangeable gears disposed between this mechanism and the table to permit of varying the angle of advance of the latter at each operating cycle of the apparatus.
  • the apparatus further generally comprises means to lock the table at each indexed position between the successive advancing steps.
  • Still a further object of this invention is to provide an apparatus as abovedefined, wherein the fourth inner shaft carries a worm wheel with which it is frictionally connected by torque-limiting means, this worm wheel being driven by a vertical worm the lower endof which projects downwardly from the casing to form the inlet shaft of the apparatus.
  • the invention also includes an-apparatus of the kind above defined, wherein the fourth shaft is formed as a cam to actuate a locking member slidably mounted within the casing and which is'urged by spring means towards the table to lock same in position between the successive advancing. steps of the apparatus.
  • FIG. 1 is an axial vertical section of an apparatus according to the invention.
  • FIG. 2 is a horizontal section thereof corresponding to line II-II of FIG, 1.
  • FIG. 3 is a fragmental section illustrating the worm and worm wheel gearing through whichthe apparatus is driven.
  • FIG. 4 is a fragmental vertical sectioncorresponding to line IV-IV of FIG. 2.
  • the indexing workpiece supporting apparatus illustrated in FIG. 1 comprises a table 1 carried by a vertical tubular shaft 2 rotatably mounted in a casing 3 by means of antifriction bearings such as 4; As shown shaft 2 has an annular radially protruding portion 2a which is clamped by means of screws's between table 1 and a socket 6 the lower end of which is formed as a bevel gear 6a. This gear 6a meshes with a bevel pinion 7 carried by a horizontal shaft 8 supported within casing 3 by antifriction bearings 9.
  • Casing 3 is approximately rectangular in horizontal cross-section (see FIG. 2) and its smaller sides are formed with lateral recesses, respective 3a and 3b.
  • Shaft 8 which is of course directed radially with respect to shaft 2, extends into recess 3a, the latter being normally closed by a removable cover 10.
  • a spur gear 11 is removable mounted on shaft 8 within recess 3a.
  • a hub 8a is fixed on shaft 8 and gear 11 is secured to the said hub by means of screws such as 12.
  • wheel 18 is in the form of a flat disc having. on its side which faces cover 17 a number of projections 18a which determine a series of radial passages for rollers 20, as for instance four at right angles to each other, the circular path followed by rollers 20 being tangent to the said passages in the conventional manner.
  • Plate 19 is formed with peripheral teeth which mesh with a pinion 23a provided on the closed end of a socket 23 mounted on a second lateral shaft 24 parallel to the above mentioned lateral shaft 15 and carried within casing 3 by antifriction bearings 25.
  • Socket 23 is longitudinally slidable on shaft 24 but it is angularly fixed thereon, as for instance by means of a longitudinal key, not illustrated.
  • Shaft 24 has an axial extension 24a of smaller diameter, which passes through the end wall'of socket 23. The end of this extension is screwthreaded and it receives a nut 26 which presses resilient spherical washers 27 against socket 23. The latter is thus urged'towards the right in FIG. 2 against a worm wheel 28 loose on shaft 24, this wheel resting in turn against an annular radially projecting portion 24b of the said shaft.
  • Wheel 28 is in mesh with a vertical worm 29 carried within casing 3 by antifriction bearings 30 (see FIG. 3).
  • the lower portion of this worm 29 extends outwardly below casing 3 and it is connected with the shaft (not illustrated) of an electric motor 31 carried by the lower side of the casing.
  • Shaft 24 is formed in a transverse plane substantially radial to shaft 2, with a groove 24c (FIGS. 2 and 4) of arcuate transverse cross-section which extends through somewhat more than The bottom 24d of this groove plays the role of a cam for a follower roller 32 carried by a horizontal arm 33.
  • the latter is clamped on a cylindrical rod 34 vertically slidable in a corresponding bore ofcasing 3 (in which it may be guided blind bore which opens downwardly, its lower end being slidable on a cylindrical block 35 secured to the casing by a screw 36.
  • the upper end of rod 34 is conical as indicated at 34a.
  • the lower tubular portion of rod 34 further contains a compression spring 37 which takes rest against block 35, thus urging rod 34 upwardly.
  • Plate 1 is of the kind described in my French Pat. No. 1,581,154. It comprises a peripheral skirt 38 (see FIG.
  • annular member 39 is disposed between ring 38a and the lower side of table 1, this member being clamped by screws 40 on a stationary sleeve 41 which rests on an inner portion of casing 3 into which screws 40 are screwed.
  • a first annular diaphragm 42 is disposed between annular member 39, its outer edge being fixed to the skirt 38 while its inner edge is slidably received between member 39 and a shoulder of the sleeve 41.
  • a second annular diaphragm 43 of quite smaller outer diameter has its inner edge fixed to sleeve 41, while its outer edge bears slidingly on a shoulder of the inner ring 38a.
  • such diaphragms define an annular chamber into which compressed air may be injected, when dey by means of balls, if desired).
  • This rod has an axial sired, to act on the inner ring 38a which is thus applied against the upper side of the inner portion of easing 3, thus locking in position the'said ring itself, skirt 38 and table 1.
  • casing 3 is formed with a third recess 3c (see FIG. 2) which may be considered as a lateral extension of recess 3a, this recess 3c being also closed by a removable cover 44.
  • Recess 3c contains a microswitch (see FIG. 4) actuated by a finger 46 fixed to arm 33 to detect the number of revolutions of shaft 24 and consequently the indexing advance of table 1.
  • roller 32 At each revolution of shaft 24 roller 32 is actuated to 6 4 of them actuates an electromagnetic distributor which controls the injection of compressed air into the space defined by diaphragms 42 and 43 (FIG. 1).
  • table 1 should be released during the period of rotation of the Geneva wheel 18 and locked as soon as this period is ended.
  • An indexing workpiece supporting apparatus comprising:
  • a casing having at least first end side and a first lateral side, with said first lateral side being formed with a first outwardly lateral, recess;
  • a rotatable supporting plate mounted on said first end side of said casing
  • first inner shaft rotatably carried within said casing to drive said shaft means, said first inner shaft being substantially perpendicular to said shaft means, and having a first end and a second end, with said firstend extending into said first lateral recess;
  • a second inner shaft also rotatably carried within said casing, said second inner shaft being substantially parallel to, but spaced from said first inner shaft, and having a first and a second end with said first end of said second inner shaft extending into said first lateral recess;
  • first removable cover means to close said first lateral recess.
  • said means to rotate said second inner shaft through a determined angle comprising: a. a third inner shaft rotatably carried within said casing, said third inner shaft being substantially parallel to but spaced from said second inner shaft, and having an end extending into said second recess;
  • a Geneva cross mechanism disposed within said second recess and including a driving pinion carried by said third inner shaft and a driven wheel carried by said second inner shaft; c. and means to rotate said third inner shaft at a substantially uniform angular speed;
  • said apparatusfurther comprising second removable cover means to close said second lateral recess.
  • said third inner shaft being substantially radial to said shaft means.
  • said means to rotate said third inner shaft at a substantially uniform angular speed including:
  • a fourth inner shaft rotatable carried within said casing and having a first end and a second end, with said second end extending into said second recess;
  • said casing having a second end side opposed to said first end side; and said means to rotate said fourth inner shaft including: a. a worm wheel loosely carried by said fourth inner shaft; b. means to frictionally retain said worm wheel at a fixed angular position with respect to said fourth inner shaft, so as to realize a torque limiting connection between said fourth inner shaft and said worm wheel; 0.
  • said worm having an axis substantially perpendicular said gear means to positively connect said fourth inner shaft with said third inner shaft including a pinion angularly fixed on said fourth inner shaft but longitudinally slidable thereon;
  • said fourth inner shaft being formed with a radially protruding portion forming a shoulder, with said worm wheel abutting against said shoulder;
  • said means to frictionally retain said worm wheel at a fixed angular position on said fourth inner shaft including resilient means carried by said fourth inner shaft and acting on said pinion to'urge same against said worm wheel so as to frictionally clamp said worm wheel between said pinion and said shoulder.
  • said first and third inner shafts being substantially radial to said shaft means and said shaft means extending in said casing between said second and fourth inner shafts.
  • said means including a rod member slidable within said casing in a direction substantially parallel to said shaft means and spring means to urge said member into engagement with said plate;
  • said casing having a third lateral side formed with a third recess

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Machine Tool Positioning Apparatuses (AREA)
US00394099A 1972-09-07 1973-09-04 Indexing workpiece supporting apparatus Expired - Lifetime US3824877A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7232334A FR2197696B1 (enrdf_load_stackoverflow) 1972-09-07 1972-09-07

Publications (1)

Publication Number Publication Date
US3824877A true US3824877A (en) 1974-07-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00394099A Expired - Lifetime US3824877A (en) 1972-09-07 1973-09-04 Indexing workpiece supporting apparatus

Country Status (3)

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US (1) US3824877A (enrdf_load_stackoverflow)
JP (1) JPS4993976A (enrdf_load_stackoverflow)
FR (1) FR2197696B1 (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877322A (en) * 1974-07-01 1975-04-15 Erickson Tool Co Indexer with diaphragm type disc brake
WO2007121907A1 (de) * 2006-04-21 2007-11-01 Friedemann Wagner Rundschalteinheit
WO2007121914A1 (de) * 2006-04-21 2007-11-01 Friedemann Wagner Antrieb für eine rundschalteinheit
WO2008119509A1 (de) * 2007-03-30 2008-10-09 Friedemann Wagner Gmbh Rundschalteinheit mit verriegelung
US20110100160A1 (en) * 2009-11-05 2011-05-05 Colonial Tool Group Inc. Rotary Workpiece Indexing Method and Apparatus
CN108747251A (zh) * 2018-04-27 2018-11-06 武汉船用机械有限责任公司 用于调距桨桨毂组件装配的柔性工作台
US11858080B2 (en) * 2018-08-10 2024-01-02 Kolibri Beteiligungsgesellschaft Mbh & Co. Kgaa Changing device for rotary indexing tables

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635326A (en) * 1947-07-02 1953-04-21 Gisholt Machine Co Automatic turret indexing mechanism for lathes
US2898781A (en) * 1957-10-22 1959-08-11 American Steel Foundries Power indexing arrangement for side head tool block

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128534A (en) * 1960-04-04 1964-04-14 Onsrud Machine Works Inc Multi-station operation workpiece supporting apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635326A (en) * 1947-07-02 1953-04-21 Gisholt Machine Co Automatic turret indexing mechanism for lathes
US2898781A (en) * 1957-10-22 1959-08-11 American Steel Foundries Power indexing arrangement for side head tool block

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877322A (en) * 1974-07-01 1975-04-15 Erickson Tool Co Indexer with diaphragm type disc brake
WO2007121907A1 (de) * 2006-04-21 2007-11-01 Friedemann Wagner Rundschalteinheit
WO2007121914A1 (de) * 2006-04-21 2007-11-01 Friedemann Wagner Antrieb für eine rundschalteinheit
CN101426615B (zh) * 2006-04-21 2011-06-01 弗里德曼·瓦格纳公开股份有限公司 具有回转盘的圆分度单元
CN101426616B (zh) * 2006-04-21 2011-06-29 弗里德曼·瓦格纳公开股份有限公司 圆分度单元
WO2008119509A1 (de) * 2007-03-30 2008-10-09 Friedemann Wagner Gmbh Rundschalteinheit mit verriegelung
US20110100160A1 (en) * 2009-11-05 2011-05-05 Colonial Tool Group Inc. Rotary Workpiece Indexing Method and Apparatus
US8770065B2 (en) 2009-11-05 2014-07-08 Colonial Tool Group Inc. Rotary workpiece indexing method and apparatus
CN108747251A (zh) * 2018-04-27 2018-11-06 武汉船用机械有限责任公司 用于调距桨桨毂组件装配的柔性工作台
CN108747251B (zh) * 2018-04-27 2020-03-10 武汉船用机械有限责任公司 用于调距桨桨毂组件装配的柔性工作台
US11858080B2 (en) * 2018-08-10 2024-01-02 Kolibri Beteiligungsgesellschaft Mbh & Co. Kgaa Changing device for rotary indexing tables

Also Published As

Publication number Publication date
FR2197696B1 (enrdf_load_stackoverflow) 1975-06-13
FR2197696A1 (enrdf_load_stackoverflow) 1974-03-29
JPS4993976A (enrdf_load_stackoverflow) 1974-09-06

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