Patent ID: 6257121
Filing Date: 2001-07-10
Classification: B21H,B21K,B23P,F04B,F16J,Y10T

Abstract:
A die for forming an indentation on each of a plurality of pistons to secure a spherical rod head inside each piston, whereinthe indentation formed is an uninterrupted, circumferential indentation located between a front piston area and a rear piston area on each piston, wherein the indentation inwardly forms an undercut enclosing the spherical rod head;the die comprising several cylindrical reception spaces for the pistons, each with a piston rod;the number and arrangement of the reception spaces corresponds to those of the cylinder spaces of a swash plate compressor;at least one hydraulic channel located in the vicinity of the wall of the cylindrical reception spaces; andat least in the outer marginal area of the reception spaces, the diameter is adapted in close sealing manner to the external size of the rear piston area of each piston.