JPS54143995A - Method of thread cutting in locking bit - Google Patents

Method of thread cutting in locking bit

Info

Publication number
JPS54143995A
JPS54143995A JP5153078A JP5153078A JPS54143995A JP S54143995 A JPS54143995 A JP S54143995A JP 5153078 A JP5153078 A JP 5153078A JP 5153078 A JP5153078 A JP 5153078A JP S54143995 A JPS54143995 A JP S54143995A
Authority
JP
Japan
Prior art keywords
thread cutting
locking bit
screw
stylus
screw model
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
JP5153078A
Other languages
Japanese (ja)
Other versions
JPS5915774B2 (en
Inventor
Yoneo Hiwasa
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.)
Mitsubishi Metal Corp
Original Assignee
Mitsubishi Metal Corp
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 Mitsubishi Metal Corp filed Critical Mitsubishi Metal Corp
Priority to JP5153078A priority Critical patent/JPS5915774B2/en
Publication of JPS54143995A publication Critical patent/JPS54143995A/en
Publication of JPS5915774B2 publication Critical patent/JPS5915774B2/en
Expired legal-status Critical Current

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  • Turning (AREA)

Abstract

PURPOSE: To provide screw thread cutting without relief in a locking bit by utilizing a screw model, an end of which has ascending and descending slopes being traceable by a stylus.
CONSTITUTION: Slopes 7a and 7b on which a stylus 6 follows are provided on an end of a screw model 7. This local section having the smallest diameter is to be a flat bottom section 7c, and its width L3 is set in such a way that scratches by tools or other do not occur. The largest diameter D7 at the ascending slope 7b adjoining this bottom section 7c, should be larger than the summation of screw model outer diameter D8 and e which is difference between a screw inner diameter D3 and a premachined hole D1 used for thread cutting in a holder of a locking bit 1. The stylus 6 is brought into contact to follow the above constructed screw model 7 and its motion is transfered in full size to the tool edge 4, allowing the thread cutting in the locking bit without relief.
COPYRIGHT: (C)1979,JPO&Japio
JP5153078A 1978-04-28 1978-04-28 Lockbit connection screw processing method Expired JPS5915774B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5153078A JPS5915774B2 (en) 1978-04-28 1978-04-28 Lockbit connection screw processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5153078A JPS5915774B2 (en) 1978-04-28 1978-04-28 Lockbit connection screw processing method

Publications (2)

Publication Number Publication Date
JPS54143995A true JPS54143995A (en) 1979-11-09
JPS5915774B2 JPS5915774B2 (en) 1984-04-11

Family

ID=12889567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5153078A Expired JPS5915774B2 (en) 1978-04-28 1978-04-28 Lockbit connection screw processing method

Country Status (1)

Country Link
JP (1) JPS5915774B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4683785A (en) * 1980-03-25 1987-08-04 Equipements Automobiles Marchal Method of cutting a worm screw and a worm screw obtained by the said method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62176365U (en) * 1986-04-26 1987-11-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4683785A (en) * 1980-03-25 1987-08-04 Equipements Automobiles Marchal Method of cutting a worm screw and a worm screw obtained by the said method

Also Published As

Publication number Publication date
JPS5915774B2 (en) 1984-04-11

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