JPS55134108A - Production of gear by powder metallurgy - Google Patents

Production of gear by powder metallurgy

Info

Publication number
JPS55134108A
JPS55134108A JP4113379A JP4113379A JPS55134108A JP S55134108 A JPS55134108 A JP S55134108A JP 4113379 A JP4113379 A JP 4113379A JP 4113379 A JP4113379 A JP 4113379A JP S55134108 A JPS55134108 A JP S55134108A
Authority
JP
Japan
Prior art keywords
gear
dies
dimensional accuracy
tooth
sintering
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
JP4113379A
Other languages
Japanese (ja)
Inventor
Osamu Yoshihara
Koichi Fukuda
Yoshihide Takemoto
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor 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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP4113379A priority Critical patent/JPS55134108A/en
Publication of JPS55134108A publication Critical patent/JPS55134108A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE:To achieve the improvement in finish dimensional accuracy by providing a pressing margin only to the portions requiring dimensional accuracy at the compression molding prior to sintering and performing dimensional correction to said portions only after the sintering. CONSTITUTION:At the compression molding of a gear 1 by compaction pressure, its tooth flank 2 and tooth face 3 are formed to nearly the same finish sizes and only the tooth surface 4 is molded to a slightly larger size by providing a pressing margin 5 thereto. This is then sintered at the specified temperature. When lubricating oil is sufficiently absorbed in the sintered gear and the gear is pressed in dies, only the pressing margin 5 of the tooth surface 4 receives ironing and its internal structure shrinks, thus the dimensional correction by the compression is effected. Since this method necessitates small pressing force at the die correcting, makes the elastic deformation amount of the dies slight and decreases the spring back amount at the removal from the dies, the assuring of dimensional accuracy becomes easy.
JP4113379A 1979-04-06 1979-04-06 Production of gear by powder metallurgy Pending JPS55134108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4113379A JPS55134108A (en) 1979-04-06 1979-04-06 Production of gear by powder metallurgy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4113379A JPS55134108A (en) 1979-04-06 1979-04-06 Production of gear by powder metallurgy

Publications (1)

Publication Number Publication Date
JPS55134108A true JPS55134108A (en) 1980-10-18

Family

ID=12599932

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4113379A Pending JPS55134108A (en) 1979-04-06 1979-04-06 Production of gear by powder metallurgy

Country Status (1)

Country Link
JP (1) JPS55134108A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59177303A (en) * 1983-03-28 1984-10-08 Toshiba Corp Sintered parts
JPS60100603A (en) * 1983-11-02 1985-06-04 Hitachi Powdered Metals Co Ltd Manufacture of sintered gear
US7028997B2 (en) 2001-06-13 2006-04-18 Mitsubishi Materials Corporation Vibration damping tool
CN103231052A (en) * 2013-03-30 2013-08-07 安徽省恒宇粉末冶金有限公司 Powder metallurgy sun gear and preparation method thereof
CN103231050A (en) * 2013-03-30 2013-08-07 安徽省恒宇粉末冶金有限公司 Powder metallurgy horizontal gear and preparation method thereof
CN104043820A (en) * 2014-05-26 2014-09-17 芜湖水泵制造有限公司 Powder metallurgy gear with excellent performance
JP2016172900A (en) * 2015-03-17 2016-09-29 Ntn株式会社 Method for manufacturing sintered bearing, and sintered bearing
CN109385579A (en) * 2018-11-14 2019-02-26 东莞市精盛粉末冶金制品有限公司 A kind of powder metallurgy self-lubricating oil bearing processing technology
CN109385578A (en) * 2018-11-14 2019-02-26 东莞市精盛粉末冶金制品有限公司 A kind of powder metallurgy planetary gear processing technology
US10697496B2 (en) 2015-03-17 2020-06-30 Ntn Corporation Sintered bearing
WO2023166240A1 (en) * 2022-03-03 2023-09-07 Gemini Composites, S.L. Toothed gear for bicycles or other systems having a similar transmission

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59177303A (en) * 1983-03-28 1984-10-08 Toshiba Corp Sintered parts
JPS60100603A (en) * 1983-11-02 1985-06-04 Hitachi Powdered Metals Co Ltd Manufacture of sintered gear
US7028997B2 (en) 2001-06-13 2006-04-18 Mitsubishi Materials Corporation Vibration damping tool
CN103231050B (en) * 2013-03-30 2015-08-05 安徽省恒宇粉末冶金有限公司 A kind of Powder metallurgy horizontal gear and preparation method thereof
CN103231050A (en) * 2013-03-30 2013-08-07 安徽省恒宇粉末冶金有限公司 Powder metallurgy horizontal gear and preparation method thereof
CN103231052A (en) * 2013-03-30 2013-08-07 安徽省恒宇粉末冶金有限公司 Powder metallurgy sun gear and preparation method thereof
CN103231052B (en) * 2013-03-30 2015-08-05 安徽省恒宇粉末冶金有限公司 A kind of powder metallurgy central gear and preparation method thereof
CN104043820A (en) * 2014-05-26 2014-09-17 芜湖水泵制造有限公司 Powder metallurgy gear with excellent performance
JP2016172900A (en) * 2015-03-17 2016-09-29 Ntn株式会社 Method for manufacturing sintered bearing, and sintered bearing
US10697496B2 (en) 2015-03-17 2020-06-30 Ntn Corporation Sintered bearing
US11454282B2 (en) 2015-03-17 2022-09-27 Ntn Corporation Sintered bearing
CN109385579A (en) * 2018-11-14 2019-02-26 东莞市精盛粉末冶金制品有限公司 A kind of powder metallurgy self-lubricating oil bearing processing technology
CN109385578A (en) * 2018-11-14 2019-02-26 东莞市精盛粉末冶金制品有限公司 A kind of powder metallurgy planetary gear processing technology
WO2023166240A1 (en) * 2022-03-03 2023-09-07 Gemini Composites, S.L. Toothed gear for bicycles or other systems having a similar transmission

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