GB365219A - Improvements in screw-thread cutting tools - Google Patents

Improvements in screw-thread cutting tools

Info

Publication number
GB365219A
GB365219A GB3231630A GB3231630A GB365219A GB 365219 A GB365219 A GB 365219A GB 3231630 A GB3231630 A GB 3231630A GB 3231630 A GB3231630 A GB 3231630A GB 365219 A GB365219 A GB 365219A
Authority
GB
United Kingdom
Prior art keywords
teeth
chamfers
screw
cutting
tooth
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
GB3231630A
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
Priority to GB3231630A priority Critical patent/GB365219A/en
Publication of GB365219A publication Critical patent/GB365219A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23GTHREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G5/00Thread-cutting tools; Die-heads
    • B23G5/02Thread-cutting tools; Die-heads without means for adjustment
    • B23G5/06Taps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

365,219. Screwing-dies; taps. CUNNINGHAM, A. D., 19, Rutland Street, Kogarah, New South Wales, Australia. Oct. 28, 1930, No. 32316. [Class 83 (iii).] A screw-cutting tool has finishing teeth 15 of uniform size and spacing, and cutting teeth 10 of diminishing depth towards the starting end, the cutting teeth having substantially flat crest portions 10b with single or double chamfers 11. The chamfers are formed by sloping the crests 10b inwardly towards the leading and rear flanks 10a, a double chamfer being shown in Fig. 2 and a single chamfer in Fig. 4. The chamfers extend to the root line 12 of the teeth at the starting end of the tool and diminish progressively in depth along the line 14 to vanish before the first finishing tooth 15. The chamfers follow the eccentric curve 16, Fig. 4, of the teeth and may be formed on each tooth of a land or on alternate teeth only.
GB3231630A 1930-10-28 1930-10-28 Improvements in screw-thread cutting tools Expired GB365219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3231630A GB365219A (en) 1930-10-28 1930-10-28 Improvements in screw-thread cutting tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3231630A GB365219A (en) 1930-10-28 1930-10-28 Improvements in screw-thread cutting tools

Publications (1)

Publication Number Publication Date
GB365219A true GB365219A (en) 1932-01-21

Family

ID=10336706

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3231630A Expired GB365219A (en) 1930-10-28 1930-10-28 Improvements in screw-thread cutting tools

Country Status (1)

Country Link
GB (1) GB365219A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10162430A1 (en) * 2001-12-18 2003-07-10 Ernst Reime Vertriebs Gmbh Rotary cutter for drilling threaded holes has circumferential teeth whose flanks facing pre-drilling end area are inclined or rounded
EP1611983A1 (en) * 2003-03-14 2006-01-04 Yamawa Manufacturing Co., Ltd. High-speed processing tap
US20180281089A1 (en) * 2015-09-30 2018-10-04 Mitsubishi Hitachi Tool Engineering, Ltd. Thread milling cutter and internal pipe thread machining method using the same
EP3581302A1 (en) * 2018-06-15 2019-12-18 Ceratizit Luxembourg Sàrl Thread cutting insert

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10162430A1 (en) * 2001-12-18 2003-07-10 Ernst Reime Vertriebs Gmbh Rotary cutter for drilling threaded holes has circumferential teeth whose flanks facing pre-drilling end area are inclined or rounded
EP1611983A1 (en) * 2003-03-14 2006-01-04 Yamawa Manufacturing Co., Ltd. High-speed processing tap
EP1611983A4 (en) * 2003-03-14 2007-04-04 Yamawa Mfg Co Ltd High-speed processing tap
US7468001B2 (en) 2003-03-14 2008-12-23 Yamawa Mfg. Co., Ltd. High-speed forming tap
CN100566902C (en) * 2003-03-14 2009-12-09 株式会社弥满和制作所 High-speed forming tap
US20180281089A1 (en) * 2015-09-30 2018-10-04 Mitsubishi Hitachi Tool Engineering, Ltd. Thread milling cutter and internal pipe thread machining method using the same
US11045889B2 (en) * 2015-09-30 2021-06-29 Molding Tool Engineering, Ltd Thread milling cutter and internal pipe thread machining method using the same
EP3581302A1 (en) * 2018-06-15 2019-12-18 Ceratizit Luxembourg Sàrl Thread cutting insert
WO2019238323A1 (en) * 2018-06-15 2019-12-19 Ceratizit Luxembourg S. À R. L. Thread cutting insert
US11684980B2 (en) * 2018-06-15 2023-06-27 Ceratizit Luxembourg S.A.R.L. Thread cutting insert

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