US2457030A - Chuck - Google Patents

Chuck Download PDF

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Publication number
US2457030A
US2457030A US615634A US61563445A US2457030A US 2457030 A US2457030 A US 2457030A US 615634 A US615634 A US 615634A US 61563445 A US61563445 A US 61563445A US 2457030 A US2457030 A US 2457030A
Authority
US
United States
Prior art keywords
ring
hub
rim
chuck
conical
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
US615634A
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English (en)
Inventor
Bugatti Ettore
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
Application granted granted Critical
Publication of US2457030A publication Critical patent/US2457030A/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
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
    • B23B31/16004—Jaws movement actuated by one or more spiral grooves
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/19—Radially reciprocating jaws
    • Y10T279/1926—Spiral cam or scroll actuated
    • Y10T279/1941—Bevel pinion

Definitions

  • the chucks utilized for holding 'the work to be .turned on a lathe must have their jaws rigorously centered .on the axis lof the headstock, and keep this property even after a prolonged use.
  • the rim ⁇ which is fa member com mon to ⁇ all Vtypes of chucks ⁇ (said rim having, on cneace, Aa bevel zgea-r vmeshing with the conical control pinions and, on the uother face., a spiral groove -or scroll the rotation yof which causes aXial shifting of the jaws) turns within a hollow cylinder constituting the casing oit the chuck,'with clearance either on its outer'periphery or on its inner periphery.
  • This invention has for an object to provide means whereby toothed .rim of chucks ⁇ are centered without play while ythey may rotate freely.
  • -A further object is to provide means which compensate automatically for play resulting from wear, and contribute to keep concentricity of chucks lafter a .long use.
  • a chuck rim is mounted with an amount of play ⁇ in its outer casing, and ⁇ between the inner bore of the rim Aand the hub which carries said rim, an automatic or manually adjustable device fior taking up play is provided.
  • Said device constituted essentially by an expansible circular bearing automatically centers the rim on the .hub and consequently on the axis Aof the chuck. .f
  • the expansible bearing is constituted by a pair of concentrical conical rings' at Aleast one of which, is .split yand ladapted to expand when the other is axially moved by a spring orotfher similar member.
  • the hub of the chuck or else the bore of the vrim is conical.
  • Athe .same result may ybe obtained ⁇ by using la row vof balls or possibly conical rollers resting on Va conical ballwace on the ria-n, and on a cylindrical balia-ace cont-ered on the hub; the latter ⁇ balL-race may .be -axially shifted either through .a thread on the hub, or by a spring.
  • 'a conical lball-.race integral with the hub may .be combined with a cylindrical 'ball-race provided in the rim. The latter ball-.race is stationary when that on the hub is movable, or movable when the latter is stationary.
  • Fig. l is a partial Vcross section of a chuck according to this invention.
  • Fig. 2' show-s a detail according to another em- .bod-intent of 'this invention.
  • 1li-g3 shows ya modication of the device shown on Fig. 2.
  • Fig.. 4 correlated with Fig. 3,'sl1cws a detail common to Figs. Zand 3.
  • Fig. 5 shows, as a modification, another embodiment of this invention.
  • Fig. 6 shows a device derived from that shown on Fig. 5.
  • the -body l of the chuck represented on Fig. l. by Way of illustration constitutes the casing for said chuck .and confines .all the usual component members, the rim 2 alone being represented.
  • Control pinions meshing with the bevel gearing -face 3 of -r-im 2, 4and the jaws sliding in suitable grooves provided v.in the bottom 4.- lof casing l are not represented. It will be assumed that the cross .section .shown on Fig. 1 vhas been made by a plane containing ⁇ neither the ⁇ pinion axis nor that of the jaws.
  • Rim :v2 bears on the face lll of bottom 4 through its .tace 9 which has a spiral or scroll gearing corresponding to that ofthe jaws, so as to leave a normal clearance between the teeth of face 3 and those oi the conical control pinions.
  • a ring H which is outwardly conical, is borne on hub l2 of casing l. Said. ring il comprises, for the best, aseries of seg-ments in order to .preclude clearance between its bore andthe outer surface of hub I2; said clearance would be unavoidable if ring II was made oi one part.
  • An inwardly conical ring I3 is fitted on ring II and tends to be expanded by the thrust of a spring Ill.
  • a single ring I'I which is inwardly conical, is used; said ring, resting on a conical surface I8 on the hub I2 of casing I, tends to expand and to lill the bore I6 of rim 2.
  • rIhis r-esult is obtained owing to the fact 'that ring I'I is comprised of a series of segments, and is continuously urged by la spring I9 backed by hub I5 of -cover 5.
  • Said spring I9 may be shaped as a thin steel ring having undulatons (Fig. 4).
  • the various segments such as IIa and Ilb which constitute ring I I have a straight or an oblique cut; in the latter case, the sli-ding conditions in bore I6 of rim 2 when the latter turns, are improved.
  • ring 22 is conical outwardly and tends to fill the inner cone 23 of rim 2.
  • ring 22 is constituted by a series of segments, this lallowing of removing clearance both along hub I2 and rim 2.
  • the device acts exactly like that of Fig. 2.
  • the ring 2li made of special steel is forced into a housing 25 provided in the centre of rim 2.
  • the diameter of the bore 26 of rim 2 is appreciably greater than the diameter of part 21 of hub I2 which faces said bore.
  • Rim 2 is centered through a row of balls 28 rolling both in the inner cone 290i ring 24 and on the inner ring Si), itself screwed on hub I2.
  • Figs. 5 and 6 The embodiment shown on Figs. 5 and 6 is based on the use ci balls.
  • the latter may advantageously be replaced by conical rollers rolling on rings similar to rings 2li and 30 or 33.
  • a chuck body having a hub; a jaw control ring loosely mounted on said hub for rotation thereon; and radially 'expansible means interposed between said hub and the inner periphery of said ring for bearing said ring from said hub and taking up clearance therebetween.
  • a chuck body having a hub; a jaw control ring losely mounted on said hub for rotation thereon; a radially expansible means, adapted to be operated by axial thrust thereon, interposed between said hub and the inner periphery of said ring, for bearing said ring from said hub and taking up clearance therebetween; and resilient means backed from said chuck body, for axially pushing the expansible means.
  • a chuck of the type described thecombination of a chuck body having a hub; a ring on said hub, having a close fit therewith, the outer periphery thereof being conical; a split ring with a cylindrical outer periphery and an inner conical periphery on the first ring; a jaw control ring'revolubly borne with a close fit on said split ring; and resilient means for urging the rst two rings towards one another in axial direction.
  • a chuck of the type described the combination of a chuck body having a hub; a ring on said hub, having a close it therewith, the outer periphery thereof being conical; a split ring with a cylindrical outer periphery and an inner conical periphery on the first ring; a jaw control ring revolubly borne wth a close t on said split ring; means on said hub providing abutments for each one of the rst two rings, on either side of said rings, one of said abutments being resilient and one of said abutments being adjustable.
  • a chuck body having a hub Witha stationary abutment thereon; a ring on said hub, on one side of said abutment, having a close nt with said hub; a split ring with a cylindrical outer periphery and an inner conical periphery. on the first ring; a jaw control ring revolubly borne on the split ring; resilient means operatively interposed between one of the first two rings and the stationary abutment, for urging said ring in one axial direction; and means adjustably secured on said hub, providing an adjustable abutment for the other of said first two rings.
  • a pair of members to wit va chuck body having a hub, and a jaw control ring loosely tted on said hub for rotation thereon, one of said members having a conical bearing surface facing the other member; means indiscontinuous ring formation, between said members, having a conical surface for contact with'said conical bearing surface of one of said members, providing a bearing for the jaw control ring on the chuck hub; an abutment .member secured Yon said hub in an axially adjustable position; and a sinuous resilient steel strip in ring formation, interposed between said means and said abut- 7.
  • a pair of members to wit a chuck body having a hub, and a jaw control ring loosely fitted on said hub for rotation thereon, one of said members having a conical bearing surface facing the other member; means in discontinuous ring formation, between said members, having a conical surface for contact with said conical bearing surface of one of said members, providing a bearing for the jaw control ring on the chuck hub; at least one stop member in outwardly protruding position on said hub, projection into a gap of said discontinuous ring means, for holding the latter against rotation; and means adjustably secured on said hub, in operative contact Wtih the first-named means for urging the same in wedging direction.
  • a chuck body having a hub; a jaw control ring loosely fitted on said hub for rota;- tion thereon; and means providing a bearing for said ring on said hub, including a set 0f rollers between. non parallel, co-axial roller races one of which is adjustable in axial position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Pumps (AREA)
  • Gripping On Spindles (AREA)
US615634A 1944-05-16 1945-09-11 Chuck Expired - Lifetime US2457030A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR992146T 1944-05-16

Publications (1)

Publication Number Publication Date
US2457030A true US2457030A (en) 1948-12-21

Family

ID=9554530

Family Applications (1)

Application Number Title Priority Date Filing Date
US615634A Expired - Lifetime US2457030A (en) 1944-05-16 1945-09-11 Chuck

Country Status (3)

Country Link
US (1) US2457030A (fr)
FR (1) FR992146A (fr)
GB (1) GB593503A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684251A (en) * 1950-05-03 1954-07-20 Union Mfg Co Rotatably mounted work clamping chuck
WO1999026757A3 (fr) * 1997-11-20 1999-08-05 American Workholding Inc Systeme de mandrin de fixation a auto-centrage dote de quatre machoires
US20050258606A1 (en) * 2004-05-24 2005-11-24 Tsung-Seng Lee Chuck for fishing rod winding machines

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US923730A (en) * 1908-08-07 1909-06-01 George Benjamin Taylor Spiral chuck.
US1013373A (en) * 1910-10-24 1912-01-02 Albert E Church Machine-chuck.
FR646624A (fr) * 1927-05-31 1928-11-14 Perfectionnements aux mandrins de serrage pour machines-outils

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US923730A (en) * 1908-08-07 1909-06-01 George Benjamin Taylor Spiral chuck.
US1013373A (en) * 1910-10-24 1912-01-02 Albert E Church Machine-chuck.
FR646624A (fr) * 1927-05-31 1928-11-14 Perfectionnements aux mandrins de serrage pour machines-outils

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684251A (en) * 1950-05-03 1954-07-20 Union Mfg Co Rotatably mounted work clamping chuck
WO1999026757A3 (fr) * 1997-11-20 1999-08-05 American Workholding Inc Systeme de mandrin de fixation a auto-centrage dote de quatre machoires
US6220608B1 (en) * 1997-11-20 2001-04-24 American Workholding, Inc. 4-jaw self-centering chucking system
US20050258606A1 (en) * 2004-05-24 2005-11-24 Tsung-Seng Lee Chuck for fishing rod winding machines

Also Published As

Publication number Publication date
GB593503A (en) 1947-10-17
FR992146A (fr) 1951-10-15

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