Combination jig and method for processing main body and sleeve of wrench for lathe

Abstract

The invention provides a combined clamp for machining a body and a sleeve of a lathe wrench and method, and belongs to the technical field of machining. The combined clamp comprises two clamp plates, a cover plate and a positioning plate. Quick installation and positioning of a body workpiece and a sleeve workpiece of the lathe wrench are achieved by means of the combined clamp. Four-side columns on the lower portion of the body are machined by means of a linear cutting machine tool, the machined four-side columns directly serve as tool electrodes, square holes in the sleeve are machined by means of an EDM machine tool, and accordingly mass machining efficiency of the four-side columns on the lower portion of the body and the square holes in the sleeve is improved. Meanwhile, quantities of tool electrode materials are saved, and a large amount of cost for manufacturing and maintaining the tool electrodes is saved. Besides, the machined four-side columns on the lower portion of the body and the square holes in the sleeve can be well matched.

Description

Technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a combined fixture and method for processing the main body and sleeve of a wrench for a lathe. Background technique [0002] Such as figure 1 , figure 2 and image 3 As shown, the wrench for a lathe mainly includes a wrench assembly and a sleeve. The wrench assembly includes a wrench and a main body. The wrench passes through the upper part of the main body. The lower part of the main body is a four-sided cylinder. The inside of the sleeve has a square hole and the sleeve The square hole is sleeved on the four-sided cylinder. [0003] Multifunctional wrenches for lathes are fully functional, which satisfies the needs of lathe operators for operating tools. However, due to the verticality requirements of the four-sided cylinder and the square hole, it is usually difficult to achieve batch processing on ordinary equipment. For wire cutting and EDM. [0004] Usually the diff...

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Problems solved by technology

[0005] The conventional EDM method is to fix a single tool electrode on the EDM machine tool, and perform one-to-one EDM with the workpiece, that is, one tool electrode corresponds to one workpiece. This processing method is easy to operate, but due to the frequent replacement of parts Higher, so the work efficiency is lower; Another common processing method is one-to-many EDM, that is, one tool electrode corresponds to processing multiple workpieces, but because it involves multiple positioning, the positional relationship between the tool electrode and the workpiece is corrected. , so there are also problems of troublesome operation and low work efficiency; another processing method is many-to-many EDM, which is to assemble multiple tool electrodes together to make assembled tool electrodes. This method usually involves multiple tools. The manufacturing cost of the electrode is high, and the tool electrode often needs to be repaired in time after it is worn out. The repair of so many tool electrodes will also increase the processing and manufacturing time of the product. In addition, there is still a gap between the tool electrode and the workpiece in this processing method. positioning problem

[0006] The above-mentioned problems also exist when machining quadrangular cylinders and square holes by means of wire cutting. That is, during processing, it is necessary to position the main workpiece and the tool electrode and the sleeve workpiece separately, which affects batch processing. Efficiency of quadrilateral cylinders and square holes

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