US2481289A - Chuck for gripping bars - Google Patents

Chuck for gripping bars Download PDF

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Publication number
US2481289A
US2481289A US12737A US1273748A US2481289A US 2481289 A US2481289 A US 2481289A US 12737 A US12737 A US 12737A US 1273748 A US1273748 A US 1273748A US 2481289 A US2481289 A US 2481289A
Authority
US
United States
Prior art keywords
chuck
ring
rollers
annulus
gripping
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
US12737A
Other languages
English (en)
Inventor
Cauchois Andre
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 US2481289A publication Critical patent/US2481289A/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
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B23B31/1253—Jaws movement actuated by an axially movable member
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet
    • D05B29/08—Presser feet comprising relatively-movable parts
    • 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
    • Y10T279/17—Socket type
    • Y10T279/17666—Radially reciprocating jaws
    • Y10T279/17692—Moving-cam actuator
    • Y10T279/17717—Rotary eccentric-cam sleeve
    • Y10T279/17735—Worm actuated
    • 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
    • Y10T279/1986—Jaws

Definitions

  • the present invention relates to a chuck for gripping bars, which is to be placed on a machine having a movement of rotation.
  • a double-coned ring formed with a neck on each side and with radial channels, in which there slide, parallel to their longitudinal axes, rollers of which one head part with spherical surface receives the thrust of two coned recesses of the same aperture, one fixed and the other guided by a number of keys, which approach one another under the action of a screwthreaded annulus or rod screwing into the central bore of the moving conically recessed ring, the rotation of this screw-threaded annulus or rod being produced by a set of coned gears which can be manipulated or operated by means of an external key, a ball-thrust being arranged between this threaded rod and the inner end of the chuck body.
  • each roller or half-channels closed at one end in which are partially located cylindrical springs, the other part of which is located in corresponding half-channels closed at one end and formed in the ring accommodating the rollers.
  • Another characteristic consists in the feature that the double-coned ring maintaining the rollers comprises tenons which slide in guide slots formed in the body of the chuck and prevent this ring from turning.
  • each of the rollers forming the jaw has two chamfered surfaces.
  • Figure 1 is a longitudinal axial cross section of the chuck.
  • Figure 2 is a front view, with a part in cross section, of the ring with its tightening or gripping rollers.
  • Figures 3, 4 and 5 are views of a gripping roller on a larger scale from above, from the side and from below respectively.
  • Figure 6 shows on the larger scale a side view of a tightening roller terminating in a frusto-conical part.
  • Figure 1 can be seen at I the body of the chuck, the bottom or inner end of which is closed by a cast-on member 2, possessing a recess 3, coned or cylindrical, for fixing to the machine.
  • the cap 4 has on the inside a coned recess 6 of the same aperture as'the conical recess I of an annulus 8 sliding in the body ofthe chuck, the bore of which is internally: screw-threaded.
  • annulus 8 is guided longitudinally by one or more keys 9,
  • rollers I I are located in channels formed radially in a double coned ring I3 comprising cylindrical neck parts IZand I2 and having pins I4. which can slide in the slots I0, serving to guide the keys 9 of the annulus 8.
  • a member I5 Into the internal screw-threaded bore of the annulus 3 is screwed a member I5, provided with a flange I6, the edges of which are cut as a bevel gear I'I, so as to form a bevel pair with a gear I8, which is rigid with a key I9, the end 20 of which can pivot in a cavity formed in the bottom 2 of the chuck.
  • the flange I6 of the part I5 is maintained at the side of the head of the chuck by means of a resilient ring or guard ring 2
  • a ball thrust bearing 22 is arranged between the inner end of the part I5 and the inner end of the bottom 2 of the chuck.
  • Each roller II has two diametrically opposite: lateral slots 23 and 24, closed at one end, corre-- sponding to two similar slots 25 and 26 formed in. the ring I3. These two slots register with one:
  • the base of the roller forming a jaw possesses two chamfers 28 and 29, having between them a plane part 30 forming the gripping surface, which may with advantage be knurled as shown in Figure 5.
  • the head of the roller may have a conical surface instead of a spherical surface.
  • a roller chuck for gripping bars comprising: a chuck body formed with a frusto-conical recess at its inner end, an annulus longitudinally slidable and guided in the chuck body, the annulus being formed with a frusto-conical recess facing and co-axial with that of the chuck body, a ring located between and co-axial with the said t qni ak rea ss h e gs in formed withradiah guiding apertures and also with two externally frusto-conical surfaces facing the frusto-conical recesses, neck portionsprojecting axially from the said ring one o-,the said neck portions being guided in the sliding annulus, and the chuck body being formed with 15:
  • rollert-ehuck. fontgrippingybars comprise 4 longitudinal aperture for guiding the other neck portion, rollers radially slidable in the apertures in the ring, bevelled surfaces at the outer ends of the rollers engaging with the frusto-conical 5 surfaces of the recesses, an internal screw thread in the annulus, an externally screw-threaded member meshing with the said thread, bevel gear teeth on the externally threaded member, a bevel pinion.;,journalled inthe ChlfiClQsab'QdYg and' meshing with the-said gear-teeth, and actuating means operable from outside the chuck body for rotating -the said pinion, thus shifting the sliding annulus, longitudinally and thereby forcing the rollers radially inwards.
  • a chuck body formedwitmatfrustoeceniealee recess-at its-inner end, an annuluslongitudmallye slidable -andguided ln the-chuck body;-- theam l nulus being formed Witlra frusto-oon-ical recesa facing-'and co-axial with that of themhuok body,
  • said frusto-conicab recesses the ring being formed with; radial 5 guiding; apertures ands also: with two; externally frusto-conioalsurtaces fae ing-the frusto-conicahrecesses, neck-portions pjecting axially from the said-iring;'one ofs-said fir neck portions beingguided in the sliding ansnulus, and the chuck bodybeing -fermed?ivi'thaaav UNITED e Es -ATENTa Number Name Date" 171';-160 Moul-ton Dec; 14; 1875* 310,308 Moore Jan; 6; 1885* 3135472 Ghappell M ar; 10,"1885-

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Gripping On Spindles (AREA)
US12737A 1947-03-21 1948-03-03 Chuck for gripping bars Expired - Lifetime US2481289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR941295T 1947-03-21

Publications (1)

Publication Number Publication Date
US2481289A true US2481289A (en) 1949-09-06

Family

ID=9468335

Family Applications (1)

Application Number Title Priority Date Filing Date
US12737A Expired - Lifetime US2481289A (en) 1947-03-21 1948-03-03 Chuck for gripping bars

Country Status (6)

Country Link
US (1) US2481289A (ja)
BE (1) BE474080A (ja)
CH (1) CH270597A (ja)
DE (1) DE825326C (ja)
FR (1) FR941295A (ja)
GB (1) GB634017A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184112A1 (en) * 2000-03-13 2002-03-06 Pascal Kabushiki Kaisha Chuck device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE958893C (de) * 1951-06-07 1957-02-28 Hermann Brenner Spannfutter mit axial verschiebbarem Gewindering zur Verstellung der Spannbacken
DE1097919B (de) * 1955-04-14 1961-01-19 Th Calow & Co Vorrichtung zum zentrischen Einspannen von Rohren, Stangen oder anderen, vorzugsweise einen kreisfoermigen Querschnitt aufweisenden stabfoermigen Werkstuecken

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US171160A (en) * 1875-12-14 Improvement in chucks
US310303A (en) * 1885-01-06 Island
US313472A (en) * 1885-03-10 Benjamin f

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US171160A (en) * 1875-12-14 Improvement in chucks
US310303A (en) * 1885-01-06 Island
US313472A (en) * 1885-03-10 Benjamin f

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184112A1 (en) * 2000-03-13 2002-03-06 Pascal Kabushiki Kaisha Chuck device
EP1184112A4 (en) * 2000-03-13 2003-06-11 Pascal Kk LINING

Also Published As

Publication number Publication date
BE474080A (ja)
CH270597A (fr) 1950-09-15
DE825326C (de) 1951-12-17
FR941295A (fr) 1949-01-06
GB634017A (en) 1950-03-15

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