JPS6434668A - Manufacture of spring pin of rotor for rotary piston engine - Google Patents
Manufacture of spring pin of rotor for rotary piston engineInfo
- Publication number
- JPS6434668A JPS6434668A JP18661887A JP18661887A JPS6434668A JP S6434668 A JPS6434668 A JP S6434668A JP 18661887 A JP18661887 A JP 18661887A JP 18661887 A JP18661887 A JP 18661887A JP S6434668 A JPS6434668 A JP S6434668A
- Authority
- JP
- Japan
- Prior art keywords
- spring pin
- pin
- less
- rotor
- piston engine
- 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
Links
Landscapes
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
PURPOSE:To maintain the surface roughness of a spring pin necessary for prevention of missing thereof and remarkably improve the fatigue strength of the spring pin by conducting shot peening at an arc height of 0.2mm or less by using shot particles having a particle size of 0.2mm or less. CONSTITUTION:A spring pin material is stain-finished, and is then thermal- refined by hardening, tempering, etc. Then, shot peening is conducted at an arc height of 0.2mm or less by using shot particles having a particle size of 0.2mm or less. By conducting the shot peening, a change in diameter of a spring pin 1 of a rotor for a rotary piston engine can be prevented from exceeding a permissible upper limit of 0.1mm, and a compressive residual stress can be formed on the surface of the pin 1. Furthermore, the stain-finished surface of the pin 1 can be prevented from being smoothened to an extent not greater than a permissible lower limit. Accordingly, a surface roughness of the spring pin 1 necessary for prevention of missing thereof can be maintained, and a fatigue strength of the pin 1 can be remarkably improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18661887A JPS6434668A (en) | 1987-07-28 | 1987-07-28 | Manufacture of spring pin of rotor for rotary piston engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18661887A JPS6434668A (en) | 1987-07-28 | 1987-07-28 | Manufacture of spring pin of rotor for rotary piston engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6434668A true JPS6434668A (en) | 1989-02-06 |
Family
ID=16191730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18661887A Pending JPS6434668A (en) | 1987-07-28 | 1987-07-28 | Manufacture of spring pin of rotor for rotary piston engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6434668A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010011936A (en) * | 1999-07-31 | 2001-02-15 | 마스지마 요시미 | Needles and method for manufacturing same |
JP2009096381A (en) * | 2007-10-18 | 2009-05-07 | Nsk Ltd | Steering device |
JP2012081569A (en) * | 2010-10-14 | 2012-04-26 | Engineered Abrasives Inc | Peening finishing |
-
1987
- 1987-07-28 JP JP18661887A patent/JPS6434668A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010011936A (en) * | 1999-07-31 | 2001-02-15 | 마스지마 요시미 | Needles and method for manufacturing same |
JP2009096381A (en) * | 2007-10-18 | 2009-05-07 | Nsk Ltd | Steering device |
JP2012081569A (en) * | 2010-10-14 | 2012-04-26 | Engineered Abrasives Inc | Peening finishing |
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