JPS54117354A - Multi-process thread rolling method for screw and its dies - Google Patents

Multi-process thread rolling method for screw and its dies

Info

Publication number
JPS54117354A
JPS54117354A JP2453478A JP2453478A JPS54117354A JP S54117354 A JPS54117354 A JP S54117354A JP 2453478 A JP2453478 A JP 2453478A JP 2453478 A JP2453478 A JP 2453478A JP S54117354 A JPS54117354 A JP S54117354A
Authority
JP
Japan
Prior art keywords
dies
teeth
thread rolling
roller dies
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.)
Granted
Application number
JP2453478A
Other languages
Japanese (ja)
Other versions
JPS6150698B2 (en
Inventor
Hiroya Murakami
Tatsuo Nakane
Keiichi Nakamura
Fumio Ihara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2453478A priority Critical patent/JPS54117354A/en
Publication of JPS54117354A publication Critical patent/JPS54117354A/en
Publication of JPS6150698B2 publication Critical patent/JPS6150698B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Metal Rolling (AREA)
  • Forging (AREA)
  • Transmission Devices (AREA)

Abstract

PURPOSE: To make possible the efficient titled thread rolling for a screw without necessity of long hours like as the conventional method, at the thread rolling of a complexed shape, by treating with the free thread rolling roller dies consisting of multi-process.
CONSTITUTION: The required number of teeth are indexed on the outer surface of the blank by the first process dies, and the lead groove is formed; after that, the required product profile is generated by the second process dies. When the number of teeth of the product is taken as (n), similarly its pitch circle radius as rp, the number of teeth of the second process roller dies as N, and its pitch circle radius as kp, the number of teeth N is determined by the formula (RP/N2≈rp/n), in which RP is selected from the specified range. Next, the profile of each of the second process roller dies and the first process roller dies (including the determination of number of teeth), is successively determined depending on the separate formula and procedure. In the second process, required times of process are repeated by plural sets of roller dies, and the profile of the product is formed. According to this method, the titled screw can be more simply and efficiently thread rolled as compared with the conventional method of cutting work.
COPYRIGHT: (C)1979,JPO&Japio
JP2453478A 1978-03-06 1978-03-06 Multi-process thread rolling method for screw and its dies Granted JPS54117354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2453478A JPS54117354A (en) 1978-03-06 1978-03-06 Multi-process thread rolling method for screw and its dies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2453478A JPS54117354A (en) 1978-03-06 1978-03-06 Multi-process thread rolling method for screw and its dies

Publications (2)

Publication Number Publication Date
JPS54117354A true JPS54117354A (en) 1979-09-12
JPS6150698B2 JPS6150698B2 (en) 1986-11-05

Family

ID=12140813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2453478A Granted JPS54117354A (en) 1978-03-06 1978-03-06 Multi-process thread rolling method for screw and its dies

Country Status (1)

Country Link
JP (1) JPS54117354A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108907046A (en) * 2016-12-13 2018-11-30 上海泛华紧固系统有限公司 A kind of rolled tube Screw thread process method, milled head, equipment, module, production line and products thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108907046A (en) * 2016-12-13 2018-11-30 上海泛华紧固系统有限公司 A kind of rolled tube Screw thread process method, milled head, equipment, module, production line and products thereof

Also Published As

Publication number Publication date
JPS6150698B2 (en) 1986-11-05

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