GB551850A - Grinding taps for use in cutting screw-threads - Google Patents

Grinding taps for use in cutting screw-threads

Info

Publication number
GB551850A
GB551850A GB729342A GB729342A GB551850A GB 551850 A GB551850 A GB 551850A GB 729342 A GB729342 A GB 729342A GB 729342 A GB729342 A GB 729342A GB 551850 A GB551850 A GB 551850A
Authority
GB
United Kingdom
Prior art keywords
threads
grinding
taps
cutting screw
screw cutting
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
GB729342A
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.)
AUTO MACHINERY Co Ltd
Original Assignee
AUTO MACHINERY Co Ltd
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 AUTO MACHINERY Co Ltd filed Critical AUTO MACHINERY Co Ltd
Priority to GB729342A priority Critical patent/GB551850A/en
Publication of GB551850A publication Critical patent/GB551850A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

551,850. Grinding screw cutting taps. AUTO MACHINERY CO., Ltd., and LEEDHAM, B. May 29, 1942, No. 7293. [Class 60] [Also in Group XXII] Screw cutting taps have spiral flutes, with a pitch about that of a twist drill, to enable them to be produced or finish ground in a centreless grinding machine. The blank may be formed with a pilot at its smaller end by which it may be re-inserted in the machine in the reversed position to improve the accuracy of the finished thread.
GB729342A 1942-05-29 1942-05-29 Grinding taps for use in cutting screw-threads Expired GB551850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB729342A GB551850A (en) 1942-05-29 1942-05-29 Grinding taps for use in cutting screw-threads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB729342A GB551850A (en) 1942-05-29 1942-05-29 Grinding taps for use in cutting screw-threads

Publications (1)

Publication Number Publication Date
GB551850A true GB551850A (en) 1943-03-11

Family

ID=9830320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB729342A Expired GB551850A (en) 1942-05-29 1942-05-29 Grinding taps for use in cutting screw-threads

Country Status (1)

Country Link
GB (1) GB551850A (en)

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