JPS6451244A - Small diametral mandrel - Google Patents

Small diametral mandrel

Info

Publication number
JPS6451244A
JPS6451244A JP20589687A JP20589687A JPS6451244A JP S6451244 A JPS6451244 A JP S6451244A JP 20589687 A JP20589687 A JP 20589687A JP 20589687 A JP20589687 A JP 20589687A JP S6451244 A JPS6451244 A JP S6451244A
Authority
JP
Japan
Prior art keywords
mandrel
gripping
workpiece
hole
mandrel body
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.)
Pending
Application number
JP20589687A
Other languages
Japanese (ja)
Inventor
Shiyoutarou Nakamura
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.)
Nakamura Seisakusho KK
Original Assignee
Nakamura Seisakusho KK
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 Nakamura Seisakusho KK filed Critical Nakamura Seisakusho KK
Priority to JP20589687A priority Critical patent/JPS6451244A/en
Publication of JPS6451244A publication Critical patent/JPS6451244A/en
Pending legal-status Critical Current

Links

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  • Jigs For Machine Tools (AREA)

Abstract

PURPOSE:To make the extent of gripping power larger even in case of a small diametral mandrel and grip a workpiece firmly in a simple manner by inserting a gripping part of a mandrel body into a through hole of the workpiece, and expanding the gripping part in a way of adding pressure to a taper hole part. CONSTITUTION:A mandrel body 1 is formed into a cylindrical form in substance, installing a large diametral hole part 8 at the one end side in the axial direction and a small diametral hole part 9 at the other end side respectively, and both these hole parts 8 and 9 are interconnected to each other, then plural slits 12 in the radial direction are installed in a part corresponding to at least a taper hole part 10 on an outer circumferential wall of the mandrel body 1. And, a gripping part 4 to be expanded by dint of pressure to be given to the taper hole part 10 of the mandrel body 1 is set to a forming part of these slits 12 and it is inserted into a through hole 11a of a workpiece 11, and this gripping part 4 is expanded in way of adding pressure to the taper hole part 10. Consequently, even in case of a small diametral mandrel, gripping power is large enough, so that it can firmly hold the workpiece 11 in a very simple manner.
JP20589687A 1987-08-19 1987-08-19 Small diametral mandrel Pending JPS6451244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20589687A JPS6451244A (en) 1987-08-19 1987-08-19 Small diametral mandrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20589687A JPS6451244A (en) 1987-08-19 1987-08-19 Small diametral mandrel

Publications (1)

Publication Number Publication Date
JPS6451244A true JPS6451244A (en) 1989-02-27

Family

ID=16514538

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20589687A Pending JPS6451244A (en) 1987-08-19 1987-08-19 Small diametral mandrel

Country Status (1)

Country Link
JP (1) JPS6451244A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5730604A (en) * 1980-03-28 1982-02-18 Sumitomo Rubber Ind Ltd Tyre

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5730604A (en) * 1980-03-28 1982-02-18 Sumitomo Rubber Ind Ltd Tyre

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