US 2003/0163919 A1Published application

Method of manufacturing a valve plate for compressor

AssigneeKabushiki Kaisha Toyota Jidoshokki

InventorsHirohiko Tanaka, Suguru Hirota, Atsushi Shibata, Takeshi Kondo, Mitsuru Hattori, Eiji Tokunaga, Tetsuhiko Fukanuma, Masakazu Hashimoto, Hiromi Yoshino

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Abstract

In a manufacturing method of a valve plate for a compressor according to this invention, a punch die 43 formed with a convex and concave configuration at its tip end face 42 is set at a press machine 41, and the punch die 43 is depressed against a surface of a valve plate 9 to transfer the convex and concave configuration of the tip end face 42. Thus, peripheral portions of a suction port and a discharge port of the valve plate 9 are roughened.

Claims5

Dependent claims

A method of manufacturing a valve plate for a compressor which divides a suction chamber and a discharge chamber from a cylinder block, said method comprising the steps of:

forming in the plate at least one suction port and at least one discharge port;
and
pressing a punch die with a tip end face of a convex and concave configuration against at least one of a peripheral portion of each suction port with which a reed portion of a suction valve is brought into contact and a peripheral portion of each discharge port with which a reed portion of a discharge valve is brought into contact so that the configuration of the tip end face is transferred onto the plate surface to perform roughening thereof.

Dependencies are inferred from the claim text.