Fixture for linear cutting of oil scraper ring seats of piston rods of low-speed marine diesel engines

Abstract

The invention relates to a fixture for linear cutting of oil scraper ring seats of piston rods of low-speed marine diesel engines. The fixture comprises a fixture seat, a fixture body, positioning bolts and elastic pressure plates, the fixture body is fixed onto the fixture seat by two inner hexagon screws, the positioning bolts are mounted on the fixture body, an annular groove and a groove are arranged on the fixture body, the annular groove can accommodate a scraper ring seat to be linearly cut, a steel wire rope can pass through the groove, the diameter of the annular groove is larger than that of the oil scraper ring seat, bolt holes for fixing the positioning bolts are further arranged on the fixture body, and a plurality of through holes for fixing the elastic pressure plate are distributed on the fixture body. The fixture is used with a linear cutting machine tool when the oil scraper ring seat is linearly cut, machining problems of difficulty in clamping, inaccurate positioning, low operational efficiency and the like when an oil scraper ring seat is linearly cut in the prior art are solved, the oil scraper ring seat is convenient and speedy to clamp before being linearly cut, and the fixture is accurate in positioning, high in capability of guaranteeing machining efficiency and high in machining efficiency.

Description

technical field [0001] The invention relates to a clamp for wire cutting, in particular to a clamp for wire cutting of a marine low-speed diesel engine piston rod scraping ring seat. Background technique [0002] The oil wiper seat is an important part installed in the piston rod stuffing box assembly of the high-power marine low-speed diesel engine. The seal ring is installed on the outer ring, and the oil scraper thin ring is installed in the groove of the inner ring. Because it is necessary to cut the whole circle of oil scraping ring seat into three sections, and then combine the three sections into a complete seat ring and put it into the stuffing box housing. The main function of the oil scraper ring seat is to scrape off the lubricating oil on the surface of the piston rod during the movement of the piston rod, and to ensure the sealing performance to prevent the oil from leaking out, so the oil scraper ring seat has a "Z" shape at the cutting fracture Type structure...

AI Technical Summary

Problems solved by technology

That is to say, the oil wiper ring seat should be clamped vertically to the wire cutting operation table. The traditional clamping method is difficult to operate and is cumbersome and complicated.

[0006] ②Because the oil wiper ring seat is a thin-walled part and has extremely high tolerance requirements for shape, position and size, it is difficult to accurately control the clamping force by the clamping method of clamping and fastening during clamping, and it is difficult to avoid deformation that affects processing accuracy

[0007] ③ The clamping space of the working table of the wire cutting machine tool itself is small, and the positioning method based on the alignment and marking is not only time-consuming and laborious, but the positioning accuracy is difficult to meet the requirements

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