Aligning system and machine for a double enveloping speed reducer
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United States of America Patent
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Nov 17, 1998
Grant Date -
N/A
app pub date -
Nov 7, 1996
filing date -
Nov 7, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for assembling a double enveloping speed reducer assembly includes predetermining the thickness of the shims required to properly position a worm assembly and a worm gear assembly in the speed reducer such that the double enveloping worm spiral and the worm gear mesh at their centers of curvature. By predetermining the thickness of the shims, the speed reducer can be assembled without guesswork. The shim thicknesses are determined, in part, by determining the distance the center of curvature of both the worm spiral and the worm gear to preselected surfaces of the worm assembly and worm gear assembly. The method also includes placing the speed reducer housing and at least one of the bearing brackets for both the worm assembly and the worm gear assembly in gauges to determine various dimensions of the housing and brackets. The measured dimensions are then used to calculate the appropriate shim thicknesses, the shims are placed adjacent a surface of the brackets, and the speed reducer is assembled. A gear gauge is provided for locating the center of curvature of the worm spiral and worm gear.
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