Special machine for piston ring numerical-control milling plates

Abstract

The invention provides a special machine for piston ring numerical-control milling plates and relates to the technical field of metal mechanical cutting equipment. The machine comprises a machine body, a workpiece holder part and a cutter part, wherein the holder part is provided with a semirigid semiflexible flared holder; the machine is provided with a draw rod, a guide sleeve and a fixed disk thereof are arranged outside the draw rod, the draw rod is provided with an inverted conical structure, at least 3 flared slide blocks are arranged around the inverted conical structure, and an elastic-material tensioning sleeve is arranged around the flared slide blocks and can tension a piston ring outside the flared slide blocks; and the machine is also provided with a parallel combined-type milling cutter. The invention has the advantages of simple structure and convenient operation. Due to the adoption of the semirigid semiflexible flared holder and the complete group milling processing mode, the invention effectively eliminates the internal stress generated by the chucking of the piston ring, greatly enhances the machining precision and the quality of the piston ring, greatly increases the yield, reduces the rejection ratio, greatly enhances the production efficiency, reduces the labor intensity and the cost, and greatly enhances the economic efficiency.

Description

technical field [0001] The invention relates to the technical field of metal mechanical cutting equipment. Background technique [0002] The existing piston ring cylinder or double-body blank is mainly cut by a lathe. The specific method is: rigidly clamp the double-body ring or cylinder ring on an ordinary lathe with a three-jaw chuck, and then use a lathe that is ground into a grooving knife The knife cuts piece by piece. Its shortcoming is: 1), labor efficiency is low, can only process single piece, can't whole group process, and the shift output is only 500 pieces / shift person. 2) The quality of the produced piston rings is poor and the scrap rate is high. Traditional processing uses a three-jaw chuck to clamp the piston ring blank, which is rigid clamping. The clamping force deforms the piston ring and generates internal stress. Three processes, the end face of the piston ring cannot be ground to produce a large number of waste products, according to statistics, the ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: 1) Low labor efficiency, only single-chip processing, not whole group processing, and the shift output is only 500 pieces / shift

2) The quality of the produced piston rings is poor and the scrap rate is high

Traditional processing uses a three-jaw chuck to clamp the piston ring blank, which is rigid clamping. The clamping force deforms the piston ring and generates internal stress. Three processes, the end face of the piston ring cannot be ground and a large amount of waste products are generated. According to statistics, the waste rate is as high as 10%-15%.

2.) Since the internal stress generated by clamping the ring cannot be completely eliminated, although the fine grinding can be ground, the internal stress continues to be released under natural conditions, which makes the finished piston ring twist and warp, and finally destroys the line of the piston ring , resulting in a high light leakage rate of the piston ring, engine blow-by, increased energy consumption, and is not conducive to environmental protection

3) The flatness, parallelism and roughness of the produced piston rings are poor, and coarse grinding and semi-finishing are required to enter fine grinding

4) High labor costs

Due to the traditional processing method, the labor efficiency is poor and a lot of labor costs are required

5), material consumption is large

Because after the traditional slicing process, the quality of the slices cannot directly enter the fine grinding process, but also undergoes coarse grinding and semi-finishing processes, and the material consumption is naturally much greater.

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