JPS57200760A - Case hardened gear - Google Patents

Case hardened gear

Info

Publication number
JPS57200760A
JPS57200760A JP8409681A JP8409681A JPS57200760A JP S57200760 A JPS57200760 A JP S57200760A JP 8409681 A JP8409681 A JP 8409681A JP 8409681 A JP8409681 A JP 8409681A JP S57200760 A JPS57200760 A JP S57200760A
Authority
JP
Japan
Prior art keywords
tooth
addendum
unhardened
edge
width direction
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
JP8409681A
Other languages
Japanese (ja)
Other versions
JPH0315062B2 (en
Inventor
Kametaro Hashimoto
Hiroo Nakamura
Mineo Ogino
Masazumi Onishi
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 JP8409681A priority Critical patent/JPS57200760A/en
Publication of JPS57200760A publication Critical patent/JPS57200760A/en
Publication of JPH0315062B2 publication Critical patent/JPH0315062B2/ja
Granted 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

Abstract

PURPOSE:To enable compression deformation of a unhardened part and sufficient maintenance of fatigue strength of a dedendum, by casehardening the surface of a gear by leaving addendum part at the edge in a face width direction uncasehardened. CONSTITUTION:In a spur gear, the surface of an addendum part at both the edges of the same in a face width direction is left unhardened for a unhardened part 4, and on the other hand a hardened part 2 is formed by hardening the surface of a tooth other than the part 4 extending over its whole surface excluding a tooth crest. In this case, on the assumption that the tooth is cut off by about a plane section which passes through a point A which is located at a distance L of 5-15% of tooth width from the edge of the tooth on the addendum and a point B which is on a about pitch circle P on the edge of the tooth, a range of the part 4 is set up so that the part 4 becomes on the addendum side than the plane section. With this, compression deformation of the unhardened part 4 is made possible, and a partial hit of the teeth is lightened.
JP8409681A 1981-06-01 1981-06-01 Case hardened gear Granted JPS57200760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8409681A JPS57200760A (en) 1981-06-01 1981-06-01 Case hardened gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8409681A JPS57200760A (en) 1981-06-01 1981-06-01 Case hardened gear

Publications (2)

Publication Number Publication Date
JPS57200760A true JPS57200760A (en) 1982-12-09
JPH0315062B2 JPH0315062B2 (en) 1991-02-28

Family

ID=13820978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8409681A Granted JPS57200760A (en) 1981-06-01 1981-06-01 Case hardened gear

Country Status (1)

Country Link
JP (1) JPS57200760A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932273A (en) * 1987-12-26 1990-06-12 Mitsubishi Denki Kabushiki Kaisha Starter for an internal combustion engine
JP2002181164A (en) * 2000-12-13 2002-06-26 Toyota Motor Corp Gear of high strength and high accuracy
JP2003027143A (en) * 2001-07-18 2003-01-29 High Frequency Heattreat Co Ltd Induction hardening method and gear
JP2020084243A (en) * 2018-11-20 2020-06-04 学校法人近畿大学 Gear under low oxygen environment and manufacturing method of the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4429210Y1 (en) * 1966-05-11 1969-12-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4429210Y1 (en) * 1966-05-11 1969-12-03

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932273A (en) * 1987-12-26 1990-06-12 Mitsubishi Denki Kabushiki Kaisha Starter for an internal combustion engine
JP2002181164A (en) * 2000-12-13 2002-06-26 Toyota Motor Corp Gear of high strength and high accuracy
JP4547795B2 (en) * 2000-12-13 2010-09-22 トヨタ自動車株式会社 gear
JP2003027143A (en) * 2001-07-18 2003-01-29 High Frequency Heattreat Co Ltd Induction hardening method and gear
JP4557240B2 (en) * 2001-07-18 2010-10-06 高周波熱錬株式会社 Induction hardening method and gear
JP2020084243A (en) * 2018-11-20 2020-06-04 学校法人近畿大学 Gear under low oxygen environment and manufacturing method of the same

Also Published As

Publication number Publication date
JPH0315062B2 (en) 1991-02-28

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