Processing method of bracket holes of tunneller type asynchronous motor

Abstract

The invention discloses a processing method of bracket holes of a tunneller type asynchronous motor. The method comprises the following steps: a, finishing the processing of a left end surface and a right end surface of a work piece; b, processing a datum plane as a subsequent alignment datum; c, aligning the center of a machine working table; d, finding the distance (H-X) between the center line of the bracket holes C and D and an origin (the center of the machine working table) by taking the center of the machine working table as the origin; e, aligning the center of a bracket hole to be processed by utilizing coordinate translation and then processing; and f, revolving the machine working table 180 degrees by taking the origin as the center, aligning an unprocessed hole by utilizing coordinate translation, comparing with the distance when the first hole is aligned, the distances are equal and are both (H-X) but of opposite directions; after reverse alignment, ensuring a main shaft center of a boring machine to be coincident with the central axis of the hole to be processed, and then half-finish boring and finish boring another bracket hole. The method has the advantages: 1, increasing the production efficiency; 2, reducing the labor intensity of workers; and 3, saving the manufacturing cost.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a processing method for a bracket hole in an asynchronous motor of an excavation type. Background technique [0002] The structural characteristics of the two bracket holes C and D in the explosion-proof three-phase asynchronous motor of the tunneling type are as follows: figure 1 Shown: the coaxiality requirements of the two bracket holes are relatively strict. In order to ensure the coaxiality requirements of the two holes, it is necessary to make the two holes be machined with one knife in one clamping and positioning as much as possible. Due to the longer size (A+2B), the size of the bracket aperture C, D is in Left and right, the hole diameter is small, if a tool holder is designed so that after the first bracket hole is processed, the second bracket hole can be processed without moving the workpiece. The production process is More difficult to achieve. The coaxiality...

AI Technical Summary

Problems solved by technology

Due to the longer size (A+2B), the size of the bracket aperture C, D is in Left and right, the hole diameter is small, if a tool holder is designed so that after the first bracket hole is processed, the second bracket hole can be processed without moving the workpiece. The production process is more difficult to achieve

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