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Abstract

This design is to plate after spring lug parts processing procedure and some process of special jig design. Plate after spring lug parts of the main processing surface is flat and holes. The principle by processing technology, ensure that the machining precision of the plane than guarantee hole machining accuracy easy. So this design follow the principle of after make face first hole. And the pores and plane differentiate clearly into rough machining and machining precision machining accuracy. To ensure the stage Benchmark choose later &leaf spring lug big external circular end as coarse benchmark, later &leaf spring lug big external circular face and two craft hole as fine a benchmark. Main processing process arrangement is first later &leaf spring lug big external circular end face as a benchmark processing, again with end face positioning technology hole machining out. In a follow-up process in addition to the individual processes with the face and both technology hole machining other hole and plane positioning. Subsequent processing. In some parts of the process of selecting the combination machine tools for processing, with production type adapt, also can increase productivity. When machining in machine, in order to make the workpiece in this process have process of surface can meet the prescribed requirements, the size and position in the processing of, must first before clamping workpiece. And the workpiece loading is correct, rapidly and will directly affect the machining quality, workpiece production efficiency, manufacturing costs and the safety of operation. This design for and two holes in the processing, design the combination machine tools special jig. This special jig with compact structure is simple, the operation is convenient, the production efficiency is higher, the processing accuracy easy assurance wait for a characteristic, suitable for mass production.

Key Words:

Processing technology order; special fixture; design

No 2

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