Method and device for assembling swash plate-type fluid machine
An assembly device includes a shaft assembly having a plurality of pistons installed on an outer peripheral portion of a swash plate via shoes. The assembly device has a shaft support portion which supports a shaft having the swash plate in a vertical axis posture, a guide member, a shoe incorporation mechanism, a carriage which conveys the plurality of pistons in the vertical axis posture, and a piston holding portion which holds the plurality of pistons. The guide member is equipped with a first guide surface and a second guide surface.
1. A device for assembling a swash plate-type fluid machine for incorporating a shaft assembly, which has a plurality of pistons each installed on a swash plate via a pair of shoes matching with both end surfaces of the swash plate, respectively, into a cylinder block, the device comprising:
an assembly support portion for supporting the shaft assembly in a vertical axis posture with the respective pistons suspended by the swash plate;
a cylinder block support portion for supporting the cylinder block, wherein the assembly support portion and the cylinder block support portion approach each other to insert the pistons of the shaft assembly into a corresponding one of cylinder bores of the cylinder block; and
a correction surface that is movable in a reciprocating manner into and out of an opening portion of the corresponding one of the cylinder bores of the cylinder block and can be positioned to protrude above an end surface of the opening portion, wherein the correction surface is brought into surface contact with an end surface of each of the pistons of the shaft assembly, which is supported by the assembly support portion, to correct a posture of each respective piston.
2. A device for assembling a swash plate-type fluid machine according to claim 1 , wherein the pistons inserted into the corresponding one of the cylinder bores are guided by a tapered surface provided along an opening portion of the cylinder bore.