US2870894A - Workpiece holding or journalling member for machine tools - Google Patents

Workpiece holding or journalling member for machine tools Download PDF

Info

Publication number
US2870894A
US2870894A US405481A US40548154A US2870894A US 2870894 A US2870894 A US 2870894A US 405481 A US405481 A US 405481A US 40548154 A US40548154 A US 40548154A US 2870894 A US2870894 A US 2870894A
Authority
US
United States
Prior art keywords
bore
slits
machine tools
workpiece holding
journalling
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
US405481A
Other languages
English (en)
Inventor
Neukomm Walter
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 US2870894A publication Critical patent/US2870894A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/202—Details of the jaws
    • 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
    • Y10T279/17291—Resilient split socket
    • Y10T279/17307—Reciprocating cam sleeve

Definitions

  • the present invention relates to a member for supporting and centering workpieces in lathes and other machine tools, this member being split over part of its length and having a longitudinal bore.
  • the slits extend in the longitudinal direction, i. e. parallel to the axis of the bore.
  • the member has e. g. four slits evenly divided over its circumference, then, if e. g. a prismatic workpiece (bar) should be supported while being machined, it may happen that a longitudinal edge of the workpiece engages that portion of one of the slits which is immediately adjacent to the bore, whereby the workpiece may temporarily reach an eccentric position, so that the passages of the longitudinal edges at the slits may provoke troublesome vibrations.
  • the main object of the invention is to avoid these draw backs, this being achieved by having the slits extend at an angle with regard to the longitudinal direction of the member over at least a part of their length.
  • Fig. 1 is a longitudinal section view of the first embodiment constituting a journalling member.
  • Fig. 2 is an elevational view of this member.
  • Fig. 3 is an end view taken in the direction of the arrow III in Fig. 1.
  • Fig. 5 is an elevational view of this chuck member
  • the joumalling memberrepresented in Figs. l to 3 comprises a tubular body 1 having a bore 2 in the for ward portion of which a liner 3 made of hard metal is arranged and soldered or otherwise fixed.
  • the body 1 has at its forward end an outer rearwardly directed cone 4 engaged by an inner cone of a sleeve 5, the engagement being adjustable by means of a tightening nut 6 screw ably engaging a threaded portion 7 at the rearward end of the body 1 ⁇
  • a tenon 8 fixed to a transversal hole of the sleeve 5 engages a longitudinal groove 9 of thebody 1 to prevent a rotation of the latter relative to the sleeve 5.
  • journalling members so built to allow for an adjustment of the diameter of the bore of the liner 3 are known in the art. Hitherto, however, the slits extended in the longitudinal direction, whilst in the journalling member of the invention the slits 10 extend helically in the body 1 as well as in the liner 3. Thus they extend at an angle with the longitudinal direction of the journalling member where they intersect with the bore, in particular with the bore of the liner 3, thereby providing the beneficial effect mentioned hereabove.
  • the slits might be inclined to the longitudinal direction only over a part of their length in the range of the bore of the liner 3 or of the bore 12. Moreover, the slits might be plane in lieu of being helical.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)
  • Turning (AREA)
US405481A 1953-02-06 1954-01-21 Workpiece holding or journalling member for machine tools Expired - Lifetime US2870894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH751613X 1953-02-06

Publications (1)

Publication Number Publication Date
US2870894A true US2870894A (en) 1959-01-27

Family

ID=4533937

Family Applications (1)

Application Number Title Priority Date Filing Date
US405481A Expired - Lifetime US2870894A (en) 1953-02-06 1954-01-21 Workpiece holding or journalling member for machine tools

Country Status (4)

Country Link
US (1) US2870894A (de)
DE (1) DE1040878B (de)
FR (1) FR1092079A (de)
GB (1) GB751613A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841645A (en) * 1972-10-04 1974-10-15 Hardinge Brothers Inc Through hole machine tool collet
JPS5636568Y2 (de) * 1977-06-09 1981-08-28
US5653453A (en) * 1995-07-28 1997-08-05 Iwata Denko Co., Ltd. Collet chuck

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US287761A (en) * 1883-10-30 John w
US414078A (en) * 1889-10-29 George rehfuss
US583625A (en) * 1897-06-01 Dental handpiece
US610483A (en) * 1898-09-06 Charles p
US1406006A (en) * 1921-03-28 1922-02-07 Bengt M W Hanson Tool holder
US2087868A (en) * 1936-02-17 1937-07-20 Baxendale Samuel Feed collet
US2282676A (en) * 1941-10-06 1942-05-12 Gulf Research Development Co Chuck
US2741483A (en) * 1953-07-24 1956-04-10 John R Cox Pusher construction

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE668355C (de) * 1934-12-23 1938-12-01 Wilhelm Berg Selbsttaetige Zangenspannvorrichtung fuer Ein- und Mehrspindelautomaten zur Verarbeitung roher Stangen mit groesseren Abweichungen im Durchmesser
CH220807A (de) * 1939-07-01 1942-04-30 Diamantwerkzeuge A G Spannpatrone für Werkzeugmaschinen mit rotierendem Arbeitsstück, wie Schraubenautomaten, Revolverbänke, Drehbänke und Verfahren zu deren Herstellung.
CH211983A (de) * 1939-12-04 1940-10-31 Leuthold Benedikt Dehnbares Spannfutter.
US2359507A (en) * 1943-03-29 1944-10-03 Curtis M Bell Automatic collet chuck
CH268919A (de) * 1945-12-21 1950-06-15 Guest Keen & Nettlefolds Ltd Läppmaschine.
GB659542A (en) * 1948-07-15 1951-10-24 Johan Eric Hayden Westberg Improvements in and relating to expansible clamp arbors

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US287761A (en) * 1883-10-30 John w
US414078A (en) * 1889-10-29 George rehfuss
US583625A (en) * 1897-06-01 Dental handpiece
US610483A (en) * 1898-09-06 Charles p
US1406006A (en) * 1921-03-28 1922-02-07 Bengt M W Hanson Tool holder
US2087868A (en) * 1936-02-17 1937-07-20 Baxendale Samuel Feed collet
US2282676A (en) * 1941-10-06 1942-05-12 Gulf Research Development Co Chuck
US2741483A (en) * 1953-07-24 1956-04-10 John R Cox Pusher construction

Also Published As

Publication number Publication date
FR1092079A (fr) 1955-04-18
DE1040878B (de) 1958-10-09
GB751613A (en) 1956-07-04

Similar Documents

Publication Publication Date Title
US8714893B2 (en) Tool holder and method for assembling the same
JP3842300B2 (ja) 雌ネジ切り工具
US2418021A (en) Gun drill
US7293942B2 (en) Tool apparatus
US2398278A (en) Adjustable stop for lathe spindles
US2970843A (en) Expanding arbor adapter for lathes
US2870894A (en) Workpiece holding or journalling member for machine tools
US2284768A (en) Cutting tool
US3838937A (en) Combination drill and counterbore
US2756059A (en) Adjustable work stop for lathe spindles
US2282676A (en) Chuck
US2358608A (en) Combination tool
US3909062A (en) Self-tightening tool chuck with a stop member adapted to be axially displaced by means of screws
US3858482A (en) Cutting device for forming polygonal shaped openings
US2413406A (en) Thread cutter
US2355965A (en) Reamer
US2819090A (en) Gripping device
US1934910A (en) Collet means
US2676810A (en) Workpiece backstop for lathe collet chucks
US2673479A (en) Boring tool
US3477319A (en) Recessing tool
US2841402A (en) Expanding mandrel chuck
US960678A (en) Lathe-center.
US3308696A (en) Lathe live center
US2513139A (en) Mechanical gripper for diamonds