JPS56146080A - Radial piston type pump motor - Google Patents
Radial piston type pump motorInfo
- Publication number
- JPS56146080A JPS56146080A JP4917980A JP4917980A JPS56146080A JP S56146080 A JPS56146080 A JP S56146080A JP 4917980 A JP4917980 A JP 4917980A JP 4917980 A JP4917980 A JP 4917980A JP S56146080 A JPS56146080 A JP S56146080A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- cam surface
- cam
- rolls
- piston
- 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
- Reciprocating Pumps (AREA)
Abstract
PURPOSE: To prevent the contact pressure of a spherical roller with respect to cam surface from increasing locally and to prevent the roller from sliding on the cam surface by a method wherein the cam surface on which the spherical roller attached to a piston rolls is formed such that the part of the surface subject to a high load has a roughness different from that of the part sibject to a low load.
CONSTITUTION: The roller 3 which is circular in section ahd which rolls on the cam surface of a cam ring 20 is attached to the piston and the piston is fitted in a cylinder block so as to take reciprocating motions in the radial direction. On the inner peripheral surface of the cam ring 20 there are formed a precision cam surface 20a which is finished to a mirror surface having a roughness of below 1μ and a coarse cam surface 20b which is finished to have a roughness of above 1μ so that the contact pressure of the roller 3 with respect to the precision cam surface 20a becomes equally low. On the other hand, the roller 3 rolls on the coarse cam surface 20b without sliding since the roller and the surface come into close metal-to-metal contact with each other.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4917980A JPS56146080A (en) | 1980-04-16 | 1980-04-16 | Radial piston type pump motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4917980A JPS56146080A (en) | 1980-04-16 | 1980-04-16 | Radial piston type pump motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56146080A true JPS56146080A (en) | 1981-11-13 |
Family
ID=12823820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4917980A Pending JPS56146080A (en) | 1980-04-16 | 1980-04-16 | Radial piston type pump motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56146080A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014214683A (en) * | 2013-04-26 | 2014-11-17 | 三菱重工業株式会社 | Radial piston type hydraulic machine, hydraulic transmission and wind power generation equipment |
-
1980
- 1980-04-16 JP JP4917980A patent/JPS56146080A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014214683A (en) * | 2013-04-26 | 2014-11-17 | 三菱重工業株式会社 | Radial piston type hydraulic machine, hydraulic transmission and wind power generation equipment |
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