JPS6411042A - Production of speed change gear - Google Patents

Production of speed change gear

Info

Publication number
JPS6411042A
JPS6411042A JP29133186A JP29133186A JPS6411042A JP S6411042 A JPS6411042 A JP S6411042A JP 29133186 A JP29133186 A JP 29133186A JP 29133186 A JP29133186 A JP 29133186A JP S6411042 A JPS6411042 A JP S6411042A
Authority
JP
Japan
Prior art keywords
billet
preform
executing
executed
coining
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
JP29133186A
Other languages
Japanese (ja)
Other versions
JPH0566223B2 (en
Inventor
Takashi Tajima
Original Assignee
Musashi Seimitsu Kogyo 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 Musashi Seimitsu Kogyo Kk filed Critical Musashi Seimitsu Kogyo Kk
Priority to JP29133186A priority Critical patent/JPH0566223B2/ja
Publication of JPS6411042A publication Critical patent/JPS6411042A/en
Publication of JPH0566223B2 publication Critical patent/JPH0566223B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To improve the quality of a product and the production efficiency by executing upsetting and forward extruding on a billet in advance and after executing a closed coining executing the punching of a shaft hole by reversing the billet. CONSTITUTION:A bar like billet is heated at the temp. adaptive to hot or warm forging by cutting it. This billet is made a preform W2 with its upset forming and forward extruding is executed via a punch 3 and punch 4. In this case, the outer peripheral face of a spur gear 7 is formed and simultaneously a projecting dowel 6 is formed in plural pieces as well. The preform W3 is subjected to closed coining by correctly positioning it inside a coining die after being cooled to a room temp. This preform W4 is reversed, the punching of a shaft hole 9 is executed inside a punching die 22, a post work is performed and a product gear is obtd. Since the positioning of the billet can be executed only once and a defect generation is prevented the quality of a product and the production efficiency are improved.
JP29133186A 1986-12-05 1986-12-05 Expired - Lifetime JPH0566223B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29133186A JPH0566223B2 (en) 1986-12-05 1986-12-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29133186A JPH0566223B2 (en) 1986-12-05 1986-12-05

Publications (2)

Publication Number Publication Date
JPS6411042A true JPS6411042A (en) 1989-01-13
JPH0566223B2 JPH0566223B2 (en) 1993-09-21

Family

ID=17767529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29133186A Expired - Lifetime JPH0566223B2 (en) 1986-12-05 1986-12-05

Country Status (1)

Country Link
JP (1) JPH0566223B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1317088C (en) * 2003-07-10 2007-05-23 河南科技大学 Precision forming method for spur gear
JP2008105092A (en) * 2006-10-27 2008-05-08 Musashi Seimitsu Ind Co Ltd Method for forming forged product
CN104439995A (en) * 2014-12-05 2015-03-25 江苏威鹰机械有限公司 Making technology for transmission double-end internal-teeth ring of electric forklift
CN106001347A (en) * 2016-06-30 2016-10-12 安徽省瑞杰锻造有限责任公司 Foundation template forging process for inner and outer step forged piece
CN106623717A (en) * 2016-12-01 2017-05-10 贵州安大航空锻造有限责任公司 Closed punching method for 1Cr13 type stainless steel high-drum ring piece
CN108672645A (en) * 2018-05-04 2018-10-19 杭州前进锻造有限公司 Band tooth idle pulley conjunction gear no-welding teeth portion one-step moulding method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1317088C (en) * 2003-07-10 2007-05-23 河南科技大学 Precision forming method for spur gear
JP2008105092A (en) * 2006-10-27 2008-05-08 Musashi Seimitsu Ind Co Ltd Method for forming forged product
CN104439995A (en) * 2014-12-05 2015-03-25 江苏威鹰机械有限公司 Making technology for transmission double-end internal-teeth ring of electric forklift
CN106001347A (en) * 2016-06-30 2016-10-12 安徽省瑞杰锻造有限责任公司 Foundation template forging process for inner and outer step forged piece
CN106623717A (en) * 2016-12-01 2017-05-10 贵州安大航空锻造有限责任公司 Closed punching method for 1Cr13 type stainless steel high-drum ring piece
CN108672645A (en) * 2018-05-04 2018-10-19 杭州前进锻造有限公司 Band tooth idle pulley conjunction gear no-welding teeth portion one-step moulding method

Also Published As

Publication number Publication date
JPH0566223B2 (en) 1993-09-21

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