US2559895A - Toolholder - Google Patents

Toolholder Download PDF

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Publication number
US2559895A
US2559895A US6162A US616248A US2559895A US 2559895 A US2559895 A US 2559895A US 6162 A US6162 A US 6162A US 616248 A US616248 A US 616248A US 2559895 A US2559895 A US 2559895A
Authority
US
United States
Prior art keywords
spring
tool
drill
tool holder
groove
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
US6162A
Other languages
English (en)
Inventor
Norlander Helge Gosta
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 US2559895A publication Critical patent/US2559895A/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
    • B23B31/117—Retention by friction only, e.g. using springs, resilient sleeves, tapers
    • B23B31/1173—Retention by friction only, e.g. using springs, resilient sleeves, tapers using springs
    • 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
    • Y10T279/17128—Self-grasping
    • Y10T279/17136—Yielding grasping jaws
    • Y10T279/17153—Spring jaws

Definitions

  • the present invention relates to a tool holder and is characterized by the fact that one end of one or more coil springs is attached to the tool holder body, whereas the other end of said spring or springs is connected to a part turnable in relation to the tool holder body, the coil spring being so arranged that in turning a tool provided with a cylindrical shank, for instance a drill, cutter or the like, in its working direction, said spring is tightened around and securely clamps this tool by the friction between the spring and the tool shank, while turning the spring in the opposite direction causes the turnable part of the spring to be enlarged, permitting the tool to be removed or inserted.
  • Fig. 1 illustrates a side view, partly in longitudinal section, of a construction of a tool holder with inserted drill in accordance with the present invention.
  • Figs. 2 and 3 are transversal sections on the lines IIII and III-III respectively of Fig. 1, while Fig. 4 is a section through the sleeve on the line IVIV in Fig. 3.
  • Figs. 5 and 6 illustrate the spring in side View and plane view respectively.
  • the drawing l designates the tool holder body, the upper part of which is provided, in a manner known per so, with a conical shank 2 or some other suitable means for attaching the tool holder to a drilling machine or the like.
  • a transversal groove 9 in which one end of a coil spring 3 is held fast.
  • the axial bore for the drill may also be enlarged in such a manner that the coil spring 3 may partly project into the tool holder body I, and thus be guided in a satisfactoryway.
  • the sleeve When inserting for instance a drill 5 the sleeve is turned in a direction opening the spring 3 and is released again when the drill has been inserted, thus causing the spring to be clamped around the drill shank, the spring 3 being so wound that, when the drill during the drilling operation tends to rotate backwards in relation to the tool holder body, the spring will be torsion-ally tightened by the friction against the drill shank and clamped around the drill, the tighter the more resistance the drill is exposed to.
  • the invention is not limited to the construction shown and described above, but may be varied in several ways within the scope of the invention. Thus, for instance, there may also be used two or more springs causing the clamping of the drill to be further improved.
  • a chuck for rotatable machinery tools comprising a body member having in the face of one end a cylindrical axial bore and a transverse groove, in a substantially cup-shaped socket member rotatably secured to the body member, the open end of the socket member receiving the said end of the body member, the bottom of the socket member having an opening therethroughin alignment with the bore of the body member for insertion of the shank of a tool to be held, the inner wall of the socket member including an'axial groove, and a helical spring having convolutions of substantially uniform diameter disposed within said socket member, one end of said spring engaging said transverse groove and the other end said axial groove, the inner diameter of the spring convolutions corresponding approximately to the diameter of the shank of a tool to be held in the chuck.
  • a chuck as described in claim 1 wherein the forward end of the body member having said bore and groove in its face is set off relative to the main portion of the body member to form a shoulder engageable with the forward end of the socket member when the latter is secured to the body member, thereby forming a flush connection between the said two members.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US6162A 1947-11-14 1948-02-04 Toolholder Expired - Lifetime US2559895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE261685X 1947-11-14

Publications (1)

Publication Number Publication Date
US2559895A true US2559895A (en) 1951-07-10

Family

ID=20306466

Family Applications (1)

Application Number Title Priority Date Filing Date
US6162A Expired - Lifetime US2559895A (en) 1947-11-14 1948-02-04 Toolholder

Country Status (5)

Country Link
US (1) US2559895A (US06262066-20010717-C00315.png)
BE (1) BE480994A (US06262066-20010717-C00315.png)
CH (1) CH261685A (US06262066-20010717-C00315.png)
FR (1) FR961921A (US06262066-20010717-C00315.png)
GB (1) GB633817A (US06262066-20010717-C00315.png)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801432A (en) * 1952-05-13 1957-08-06 Randrup Ben Rotary cleaning device
US2936625A (en) * 1957-05-08 1960-05-17 George W Heiseler Self-tightening gripping device
US3794335A (en) * 1972-05-19 1974-02-26 Rockwell International Corp Devices for attaching accessories
US3856253A (en) * 1973-05-01 1974-12-24 American Trading & Prod Adjustable stand
US3967831A (en) * 1974-10-21 1976-07-06 Chang Ming Chao Spring coil holding device
WO1998017427A1 (en) * 1996-10-24 1998-04-30 Power Tool Holders Incorporated Quick release chuck device
WO2000047367A1 (en) * 1999-02-12 2000-08-17 Sandvik Ab; (Publ) A grinding tool for grinding buttons of a rock drill bit, a grinding cup, a grinding spindle and a method for mounting the grinding cup on a grinding spindle
US20040021276A1 (en) * 2002-08-02 2004-02-05 Allan Scott W. Quick-connect chuck mechanism
JP2010036329A (ja) * 2008-08-08 2010-02-18 Takashima Sangyo Kk ワーク保持機構および工作機械
US20120153580A1 (en) * 2009-10-27 2012-06-21 Kuniji Soma Device for gripping treatment tool of handpiece

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1295973B (de) * 1965-06-03 1969-05-22 Heinkel Ag Ernst Futter fuer Werkzeugschaefte
CH580421A5 (US06262066-20010717-C00315.png) * 1974-09-30 1976-10-15 Mosimann David
DE3315720C2 (de) * 1983-04-28 1986-02-13 Mannesmann AG, 4000 Düsseldorf Vorrichtung zum Spannen langgestreckter rotationssymmetrischer Werkstücke
DE3403654A1 (de) * 1984-02-02 1985-08-08 Vereinigte Dentalwerke Antaeos-Beutelrock-Zipperer Zdarsky Ehrler GmbH & Co KG, 8000 München Klemmgriff fuer zahnwurzelkanal-instrumente
DE3930245A1 (de) * 1989-09-11 1991-03-14 Otto Zettl Kupplungseinrichtung fuer modulare werkzeugsysteme

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1552085A (en) * 1921-04-02 1925-09-01 Grip Nut Co Tool-holding chuck
US2105330A (en) * 1935-01-10 1938-01-11 Teletype Corp Tool holder
US2467606A (en) * 1945-03-06 1949-04-19 West Road Co Ltd Chuck

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1552085A (en) * 1921-04-02 1925-09-01 Grip Nut Co Tool-holding chuck
US2105330A (en) * 1935-01-10 1938-01-11 Teletype Corp Tool holder
US2467606A (en) * 1945-03-06 1949-04-19 West Road Co Ltd Chuck

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801432A (en) * 1952-05-13 1957-08-06 Randrup Ben Rotary cleaning device
US2936625A (en) * 1957-05-08 1960-05-17 George W Heiseler Self-tightening gripping device
US3794335A (en) * 1972-05-19 1974-02-26 Rockwell International Corp Devices for attaching accessories
US3856253A (en) * 1973-05-01 1974-12-24 American Trading & Prod Adjustable stand
US3967831A (en) * 1974-10-21 1976-07-06 Chang Ming Chao Spring coil holding device
WO1998017427A1 (en) * 1996-10-24 1998-04-30 Power Tool Holders Incorporated Quick release chuck device
US5826888A (en) * 1996-10-24 1998-10-27 Power Tool Holders Incorporated Quick release chuck device
WO2000047367A1 (en) * 1999-02-12 2000-08-17 Sandvik Ab; (Publ) A grinding tool for grinding buttons of a rock drill bit, a grinding cup, a grinding spindle and a method for mounting the grinding cup on a grinding spindle
US20040021276A1 (en) * 2002-08-02 2004-02-05 Allan Scott W. Quick-connect chuck mechanism
WO2004012891A2 (en) * 2002-08-02 2004-02-12 Maxtech Manufacturing Inc. Quick-connect chuck mechanism
WO2004012891A3 (en) * 2002-08-02 2004-05-06 Maxtech Mfg Inc Quick-connect chuck mechanism
US7278640B2 (en) * 2002-08-02 2007-10-09 Maxtech Manufacturing Inc. Quick-connect chuck mechanism
JP2010036329A (ja) * 2008-08-08 2010-02-18 Takashima Sangyo Kk ワーク保持機構および工作機械
US20120153580A1 (en) * 2009-10-27 2012-06-21 Kuniji Soma Device for gripping treatment tool of handpiece

Also Published As

Publication number Publication date
FR961921A (US06262066-20010717-C00315.png) 1950-05-25
CH261685A (de) 1949-05-31
GB633817A (en) 1949-12-30
BE480994A (US06262066-20010717-C00315.png)

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