JPS57101612A - Enhancement of fatigue strength of gear - Google Patents
Enhancement of fatigue strength of gearInfo
- Publication number
- JPS57101612A JPS57101612A JP17807980A JP17807980A JPS57101612A JP S57101612 A JPS57101612 A JP S57101612A JP 17807980 A JP17807980 A JP 17807980A JP 17807980 A JP17807980 A JP 17807980A JP S57101612 A JPS57101612 A JP S57101612A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- gears
- tensile stress
- spheres
- diameter
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
Abstract
PURPOSE:To greatly increase the fatigue strength of gears by a method in which a pressure applied through hard spheres on the inside-diameter wall of a gear so as to generate a tensile stress in the circumferential direction of the gear bottom, and under the condition, the gear is subjected to a shot peening. CONSTITUTION:Hard spheres 2 of steel, ceramic, etc., whose surfaces are coated with a lubricant are packed in the inside-diameter wall 1a of a cylindrical gear 1 through which a shaft is passed, and a tensile stress is applied to the circumferential direction of the outside diameter (gear bottom) of the gear through the spheres as pressure mediums. In short, a cover 7 for the periphery of a lower spacer 9 is vertically provided on a base 10, gears 1 are stacked up, and then the hard spheres 2 are packed. Then, a bolt 6 is inserted into the hole 3a of a piston 3, the small-diameter portion is set in such a way that it is positioned inside the hole 8a of the upper spacer 8, and then a pressure is applied by clamping it with nuts. Thus, a circumferential tensile stress is generated in the outside diameter (gear bottom) of the gears for stress peening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17807980A JPS57101612A (en) | 1980-12-18 | 1980-12-18 | Enhancement of fatigue strength of gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17807980A JPS57101612A (en) | 1980-12-18 | 1980-12-18 | Enhancement of fatigue strength of gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57101612A true JPS57101612A (en) | 1982-06-24 |
| JPS6360096B2 JPS6360096B2 (en) | 1988-11-22 |
Family
ID=16042248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17807980A Granted JPS57101612A (en) | 1980-12-18 | 1980-12-18 | Enhancement of fatigue strength of gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57101612A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62200071A (en) * | 1986-02-27 | 1987-09-03 | Toyota Motor Corp | Manufacture of high-strength gear |
| JP2008506581A (en) * | 2004-07-16 | 2008-03-06 | クーパー−スタンダード・オートモーティブ・インコーポレーテッド | Alignment morphology with low bending rate of extruded low friction material |
-
1980
- 1980-12-18 JP JP17807980A patent/JPS57101612A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62200071A (en) * | 1986-02-27 | 1987-09-03 | Toyota Motor Corp | Manufacture of high-strength gear |
| JPH0564208B2 (en) * | 1986-02-27 | 1993-09-14 | Toyota Motor Co Ltd | |
| JP2008506581A (en) * | 2004-07-16 | 2008-03-06 | クーパー−スタンダード・オートモーティブ・インコーポレーテッド | Alignment morphology with low bending rate of extruded low friction material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6360096B2 (en) | 1988-11-22 |
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