JPS56126539A - Piston manufacturing method - Google Patents

Piston manufacturing method

Info

Publication number
JPS56126539A
JPS56126539A JP2954480A JP2954480A JPS56126539A JP S56126539 A JPS56126539 A JP S56126539A JP 2954480 A JP2954480 A JP 2954480A JP 2954480 A JP2954480 A JP 2954480A JP S56126539 A JPS56126539 A JP S56126539A
Authority
JP
Japan
Prior art keywords
piston
cold forging
calibered
machining
finished
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
JP2954480A
Other languages
Japanese (ja)
Inventor
Yukio Sakakibara
Kazuji Hagiwara
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.)
Asahi Tec Corp
Original Assignee
Asahi Malleable Iron Co 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 Asahi Malleable Iron Co Ltd filed Critical Asahi Malleable Iron Co Ltd
Priority to JP2954480A priority Critical patent/JPS56126539A/en
Publication of JPS56126539A publication Critical patent/JPS56126539A/en
Pending legal-status Critical Current

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  • Forging (AREA)

Abstract

PURPOSE: To manufacture an extra-rigid and light piston with a reduced amount of machining, by providing machining after its external shape is roughly finished through cold forging.
CONSTITUTION: A piston in the master cylinder of an automobile braking device is taken here as an example. A round bar 11 is preformed through cold forging to a primary product 12 having a large calibered portion 1 and a small calibered portion 7. A secondary product 13, having a flange 5, concave 4 and hole 6, is then produced through cold forging. Finally a finished piston A is manufactured through cutting and drilling as shown chain lines in the figure.
COPYRIGHT: (C)1981,JPO&Japio
JP2954480A 1980-03-08 1980-03-08 Piston manufacturing method Pending JPS56126539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2954480A JPS56126539A (en) 1980-03-08 1980-03-08 Piston manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2954480A JPS56126539A (en) 1980-03-08 1980-03-08 Piston manufacturing method

Publications (1)

Publication Number Publication Date
JPS56126539A true JPS56126539A (en) 1981-10-03

Family

ID=12279059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2954480A Pending JPS56126539A (en) 1980-03-08 1980-03-08 Piston manufacturing method

Country Status (1)

Country Link
JP (1) JPS56126539A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04502321A (en) * 1988-12-21 1992-04-23 イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー Use of benzoylurea as an insecticide
CN108213879A (en) * 2018-03-20 2018-06-29 鹏驰五金制品（昆山）有限公司 Engine piston bar cold-heading molding technique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04502321A (en) * 1988-12-21 1992-04-23 イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー Use of benzoylurea as an insecticide
CN108213879A (en) * 2018-03-20 2018-06-29 鹏驰五金制品（昆山）有限公司 Engine piston bar cold-heading molding technique

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