GB1485433A - Thread grinding machine - Google Patents

Thread grinding machine

Info

Publication number
GB1485433A
GB1485433A GB39898/74A GB3989874A GB1485433A GB 1485433 A GB1485433 A GB 1485433A GB 39898/74 A GB39898/74 A GB 39898/74A GB 3989874 A GB3989874 A GB 3989874A GB 1485433 A GB1485433 A GB 1485433A
Authority
GB
United Kingdom
Prior art keywords
workpiece
slide
grinding
thread
cam
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
Application number
GB39898/74A
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.)
Reishauer AG
Original Assignee
Reishauer AG
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 Reishauer AG filed Critical Reishauer AG
Publication of GB1485433A publication Critical patent/GB1485433A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/18—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of taps or reamers
    • B24B3/22—Relief cutting of taps or reamers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

1485433 Thread grinding; grinding taps REISHAUER AG 12 Sept 1974 [17 Sept 1973] 39898/74 Heading B3D A thread grinding machine includes means for relief grinding the thread of taps and internal thread formers with straight or helical flutes or rolling edges in which a workpiece, i.e. tap or former, is rotated about its longitudinal axis A and guided in the direction thereof passed a grinding wheel 5 which is radially adjustable with respect to the workpiece axis to generate the desired thread pitch. The rotating workpiece 26 is mounted on a slide to be coaxial with the machine spindle and the slide is formed in two parts 3, 2 a first part 3 which supports the workpiece and which is guidably mounted on a second part 2 by way of leaf springs 10, 11 means being provided to impart an oscillating movement of the first part with respect to the second part in a direction transverse to the axis of the workpiece to provide the relief grinding motion of the workpiece with respect to the grinding wheel. The oscillatory motion of the first part 3 of the slide is effected by a cam 14 which actuates a pivotable lever 15 mounted in the second part 2 of the slide which in turn acts on a roller 19 mounted in the first part by way of a bush cam 17 which is rotatable to control the extent (amplitude) of the oscillation. The whole slide 2, 3 is movable along the machine frame 1 by way of a feed screw 56 in sequence with the rotation of the workpiece and the oscillation of the first part 2 of the slide. The synchronous simultaneous motions are initiated by a motor 25 which operates through a gear-box 7 in which the ratios and gears selected provide the desired speed of rotation of the workpiece from an output shaft and coupling 13, the rotation of a shaft 42 on which the cam 14 is mounted which actuates the lever 15 and the feed traverse of the slide 2, 3 passed the grinding wheel. In order to facilitate the relief grinding of workpieces with helical flutes a further superimposed motion is applied to the rotation of the workpiece as it traverses passed the grinding wheel, this further motion is provided by an adjustable cam 49 against which a plunger 50 extending from the gear-box 7 abuts. The plunger actuates a rack and pinion means whose movement is superimposed on the normal selected rotational drive.
GB39898/74A 1973-09-17 1974-09-12 Thread grinding machine Expired GB1485433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1330173A CH570239A5 (en) 1973-09-17 1973-09-17

Publications (1)

Publication Number Publication Date
GB1485433A true GB1485433A (en) 1977-09-14

Family

ID=4391212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39898/74A Expired GB1485433A (en) 1973-09-17 1974-09-12 Thread grinding machine

Country Status (7)

Country Link
US (1) US3905156A (en)
JP (1) JPS5835830B2 (en)
CH (1) CH570239A5 (en)
DD (1) DD113464A5 (en)
DE (1) DE2442384C3 (en)
GB (1) GB1485433A (en)
HU (1) HU171509B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2952610A1 (en) * 1979-12-28 1981-07-02 Reishauer AG, Zürich THREAD GRINDING MACHINE WITH DEVICE FOR GRINDING THE THREAD ON TAP DRILLS AND INTERNAL THREAD MOLDERS
DE3036153C2 (en) * 1980-09-23 1985-06-27 Herbert Lindner Gmbh, 1000 Berlin Device for relief grinding and polygon grinding on grinding machines
DE3037568C2 (en) * 1980-10-04 1985-04-11 Günther & Co, 6000 Frankfurt Grooved tap
CH647704A5 (en) * 1980-11-14 1985-02-15 Reishauer Ag METHOD AND DEVICE FOR MACHINING A SNAIL-SHAPED WORKPIECE WITH A SNAIL-SHAPED TOOL.
DE3043261A1 (en) * 1980-11-15 1982-07-01 Reishauer AG, 8000 Zürich Thread relief-grinding machine - has grinder body with feeler bearing against cam roller on slide axis
US4484931A (en) * 1981-01-05 1984-11-27 Anthony Kushigian Thread grinder
US4454689A (en) * 1981-09-09 1984-06-19 Itm International Tool Machines, Inc. Clamping arrangement
DE3236440A1 (en) * 1982-10-01 1984-04-05 Reishauer AG, 8304 Wallisellen Method of grinding a screw tap and grinding wheel for carrying out the method
JPS60151329U (en) * 1984-03-19 1985-10-08 株式会社クボタ Combine harvester’s harvested grain transport structure
DE3522977A1 (en) * 1985-06-27 1987-01-08 Buderus Ag METHOD FOR PROFILE PROFILING OF A WORKPIECE
US20080213720A1 (en) * 2003-05-13 2008-09-04 Ultradent Products, Inc. Endodontic instruments manufactured using chemical milling
US7665212B2 (en) * 2005-02-23 2010-02-23 Ultradent Products, Inc. Methods for manufacturing endodontic instruments
US7743505B2 (en) * 2005-02-23 2010-06-29 Ultradent Products, Inc. Methods for manufacturing endodontic instruments from powdered metals
DE102006009986B4 (en) * 2006-03-03 2010-04-01 Erwin Junker Maschinenfabrik Gmbh Method for back grinding the cutting teeth of taps, thread formers and similar tools, and grinding machine for carrying out the method
CN113927438B (en) * 2021-09-23 2022-11-04 浙江维克机械科技有限公司 Screw tap machining center and machining method
CN114083363B (en) * 2021-11-29 2023-03-24 河北力准机械制造有限公司 Screw tap processing machine tool
CN116276340B (en) * 2023-03-30 2023-10-17 成都成量螺纹工具有限公司 Special tool for grinding screw tip groove of screw tip tap

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1798832A (en) * 1927-09-02 1931-03-31 Buckingham Earle Worm and tap grinder
US2469077A (en) * 1947-07-31 1949-05-03 Rickenmann Alfred Machine tool with automatic feed device
US2929172A (en) * 1956-07-16 1960-03-22 Norman Ind Inc Van Machine for cutting a succession of workpieces to a predetermined size

Also Published As

Publication number Publication date
DE2442384C3 (en) 1980-03-13
DE2442384B2 (en) 1979-07-05
US3905156A (en) 1975-09-16
CH570239A5 (en) 1975-12-15
DE2442384A1 (en) 1975-03-27
JPS5835830B2 (en) 1983-08-05
JPS5056692A (en) 1975-05-17
HU171509B (en) 1978-01-28
DD113464A5 (en) 1975-06-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930912