Patent ID: 6616429
Filing Date: 2003-09-09
Classification: F04C,G01B,Y10T

Abstract:
A method for mounting and aligning upper and lower bearings for supporting a crankshaft of a scroll compressor, using a single stand, the method comprising the steps of:providing a single bearing mounting and alignment fixture having measuring apparatus associated therewith for determining bearing play, providing a compressor assembly formed by mounting a body forming part of the compressor and compression elements in a casing forming part of the compressor, with a body or fixed scroll bearing on one end of a shroud defined by the casing, and then welding a cap to the shroud, the crankshaft being previously or subsequently engaged in a movable scroll bearing forming part of a movable portion of a compression stage in the compressor and into the upper bearing coupled to the body, the crankshaft having to be mounted in a lower bearing, itself mounted in a support to be fastened to the casing of the compressor, mounting the compressor assembly in the single bearing mounting and alignment fixture, displacing a free end of the crankshaft in a plurality of directions approximately perpendicular to an axis defined by the crankshaft to account for play in the upper bearing mounted in the body, using the measuring apparatus to determine the play in the upper bearing and then determining the axis of the lower bearing from the different displacements of the crankshaft, positioning the lower bearing as a function of the axis of the lower bearing, and fastening the support equipped with the lower bearing to the casing of the compressor.