| 摘要 |
<p>A shoe (15) arranged between a swash plate and a piston (10) of a swash plate type compressor for transmitting the rotating motion of the swash plate as a reciprocating movement to the piston (10), and a method for manufacturing the same. The shoe (15) is a single body having a hemispherical portion which slidably contacts a spherical recess formed on the piston, (10) and a planar end face (15b) which slidably contacts the end face of the swash plate. A method for manufacturing such a shoe (15) includes compressing a cylindrical blank in its axial direction and thereby plastically deforming one end of the blank against the inner surface of a hemispherical recess (10b) of a die, and plastically deforming the other end of the blank in a state where only the end face is restrained. According to this method a shoe (15) which incorporates a flank between the hemispherical portion making sliding contact with the recess (10b) of the piston (10) and the bottom end face (15b) making sliding contact with the swash plate can be readily manufactured. Another preferred embodiment of the method includes the steps of forming a hole having a predetermined size on the end face of the cylindrical portion of the blank beforehand and reducing the diameter of the hole opening by pressing and deforming the end face of the cylindrical portion so that the hemispherical portion is thus formed, or includes the steps of cutting the periphery of the end face of the cylindrical portion of the blank into a conical shape beforehand, and then pressing and deforming the conical portion of the blank thereby forming a hemispherical portion. This method can prevent the application of a local high load to the blank, and decrease the amount of material that must flow.</p> |
