GB506884A - Improvements in or relating to tapping tools - Google Patents

Improvements in or relating to tapping tools

Info

Publication number
GB506884A
GB506884A GB28426/38A GB2842638A GB506884A GB 506884 A GB506884 A GB 506884A GB 28426/38 A GB28426/38 A GB 28426/38A GB 2842638 A GB2842638 A GB 2842638A GB 506884 A GB506884 A GB 506884A
Authority
GB
United Kingdom
Prior art keywords
rolls
threads
holder
mandrel
screw
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
GB28426/38A
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.)
DEUTSCHE ROEHRENWERKE AG
Original Assignee
DEUTSCHE ROEHRENWERKE 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 DEUTSCHE ROEHRENWERKE AG filed Critical DEUTSCHE ROEHRENWERKE AG
Publication of GB506884A publication Critical patent/GB506884A/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
    • B21H3/08—Making helical bodies or bodies having parts of helical shape internal screw-threads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Forging (AREA)

Abstract

506,884. Rolling screw - threads. DEUTSCHE ROHRENWERKE AKT.- GES. Sept: 30, 1938, No. 28426. Convention date, Nov. 15, 1937. [Class 83 (iv)] Internal screw-threads are rolled in a tubular blank 1 by a number of rolls 3 with circular grooves f distributed around a screw-threaded mandrel 6 and mounted in a holder 2, machinerotated by its squared end, and pressed into the blank the mandrel 6 being guided by a centring stud 7, rigidly secured in the holder 2. The rolls 3 are inclined to determine the pitch. The mandrel 6 may be conical, double conical or barrel shaped to form like threads on the work, the rolls 3 being free to move radially in the holder 2.
GB28426/38A 1937-11-15 1938-09-30 Improvements in or relating to tapping tools Expired GB506884A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE506884X 1937-11-15

Publications (1)

Publication Number Publication Date
GB506884A true GB506884A (en) 1939-06-06

Family

ID=6546656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28426/38A Expired GB506884A (en) 1937-11-15 1938-09-30 Improvements in or relating to tapping tools

Country Status (1)

Country Link
GB (1) GB506884A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069940A (en) * 1959-11-09 1962-12-25 Koehler Marian Elizabeth Tap for rolling internal threads
US3089362A (en) * 1957-05-02 1963-05-14 Robert H Hill Thread rolling tool
EP1655090A1 (en) * 2004-11-05 2006-05-10 MEC-LAN S.r.l. Rolling tap

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089362A (en) * 1957-05-02 1963-05-14 Robert H Hill Thread rolling tool
US3069940A (en) * 1959-11-09 1962-12-25 Koehler Marian Elizabeth Tap for rolling internal threads
EP1655090A1 (en) * 2004-11-05 2006-05-10 MEC-LAN S.r.l. Rolling tap

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