GB564269A - Improvements in or relating to thread-generating machines - Google Patents

Improvements in or relating to thread-generating machines

Info

Publication number
GB564269A
GB564269A GB420743A GB420743A GB564269A GB 564269 A GB564269 A GB 564269A GB 420743 A GB420743 A GB 420743A GB 420743 A GB420743 A GB 420743A GB 564269 A GB564269 A GB 564269A
Authority
GB
United Kingdom
Prior art keywords
threads
bases
thread
roll
flat
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
GB420743A
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 GB420743A priority Critical patent/GB564269A/en
Publication of GB564269A publication Critical patent/GB564269A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/04—Making by means of profiled-rolls or die rolls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Metal Rolling (AREA)

Abstract

564,269. Rolling screw-threads. STEINLE, L. C., and HANWELL, C. H. March 15, 1943, No. 4207. [Class 83 (iv)] To avoid the formation of cold shuts at the crests of screwthreads formed by rolling either by rolls, platens, or roll and concave surface, the roll &c. has the base of at least one thread forming groove flat in cross-section. As applied to rolls a, b, each roll has a two-start thread, the bases of the threads d, e being flat whilst the bases of the threads c, fare grooved, the deepened flat bases l having sides g normal thereto. In a modification, the deepened threads have bases in the form of circular arcs. Both the above forms produce threads of truncated form. In a further form, the grooves are all of the same depth, as shown in Fig. 7; this form produces a thread of Whitworth form.
GB420743A 1943-03-15 1943-03-15 Improvements in or relating to thread-generating machines Expired GB564269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB420743A GB564269A (en) 1943-03-15 1943-03-15 Improvements in or relating to thread-generating machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB420743A GB564269A (en) 1943-03-15 1943-03-15 Improvements in or relating to thread-generating machines

Publications (1)

Publication Number Publication Date
GB564269A true GB564269A (en) 1944-09-20

Family

ID=9772744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB420743A Expired GB564269A (en) 1943-03-15 1943-03-15 Improvements in or relating to thread-generating machines

Country Status (1)

Country Link
GB (1) GB564269A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699077A (en) * 1950-11-20 1955-01-11 Emma G Bedker Method of rolling threads on thread forming tools
US2934980A (en) * 1955-11-11 1960-05-03 Grob Theodore Metal rolling machine
US2937547A (en) * 1953-08-04 1960-05-24 Landis Machine Co Method of rolling workpieces
US3069960A (en) * 1957-03-07 1962-12-25 Elastic Stop Nut Corp Screw threaded member
US3069941A (en) * 1960-01-06 1962-12-25 Elastic Stop Nut Corp Screw threading tool
US3069961A (en) * 1960-01-04 1962-12-25 Elastic Stop Nut Corp Screw threaded member
WO2006083655A1 (en) * 2005-01-28 2006-08-10 Garver Michael A Major diameter correcting re-roll thread rolling die

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699077A (en) * 1950-11-20 1955-01-11 Emma G Bedker Method of rolling threads on thread forming tools
US2937547A (en) * 1953-08-04 1960-05-24 Landis Machine Co Method of rolling workpieces
US2934980A (en) * 1955-11-11 1960-05-03 Grob Theodore Metal rolling machine
US3069960A (en) * 1957-03-07 1962-12-25 Elastic Stop Nut Corp Screw threaded member
US3069961A (en) * 1960-01-04 1962-12-25 Elastic Stop Nut Corp Screw threaded member
US3069941A (en) * 1960-01-06 1962-12-25 Elastic Stop Nut Corp Screw threading tool
WO2006083655A1 (en) * 2005-01-28 2006-08-10 Garver Michael A Major diameter correcting re-roll thread rolling die

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