Method for manufacturing large elastic obturating piston ring

Abstract

The invention belongs to the field of machining process and discloses a method for manufacturing a large elastic obturating piston ring. The method comprises the following steps: (1), turning the outer diameter, inner diameter and thickness of the product through a lathe; (2), drilling a process compression hole through a drilling machine; (3), performing semi-finish turning to the thickness through the lathe; (4), conducting heat treatment; (5), grinding the thickness plane through a grinding machine; (6), cutting an inner circle, an outer circle and an opening through a linear cutting machine; (7), performing external grinding through the grinding machine; and (8), grinding an inner hole through the grinding machine. The invention has the benefits that the method for manufacturing the large elastic obturating piston ring with the pressure-equalizing radial sealing ring structure is devised; the deformation law of roughly machining the contour under the state without radial stress and the influence to the profile tolerance and the opening dimension of the piston ring during the process of finely machining the inner circle and the outer circle under the radial stress state are discovered; the difficult process problems that the structure rigidity of parts is poor, the machining deformation is easily caused, and the machining accuracy of the parts is affected are solved; and the method fills the gap in China.

Description

technical field [0001] The invention belongs to the field of mechanical processing technology, and in particular relates to a method for manufacturing a large elastic sealing ring. Background technique [0002] The processed product of the manufacturing method of the large elastic sealing ring is a large elastic sealing ring with a pressure equalizing radial sealing ring structure. Large refers to an outer diameter greater than 300mm, and the material of large elastic sealing rings is generally spring steel or high-temperature alloy steel. Because of the weak structural rigidity, deformation is easy to occur during processing, which affects the processing accuracy of the parts. At present, there is no manufacturing process for processing large elastic sealing rings. Contents of the invention [0003] The object of the present invention is to provide a kind of manufacturing method of large-scale elastic sealing ring, according to the radius variable of each point on the ri...

AI Technical Summary

Problems solved by technology

Large refers to the outer diameter greater than 300mm, and the material of the large elastic sealing ring is generally spring steel or high-temperature alloy steel. Because of the weak structural rigidity, it is easy to deform during processing, which affects the processing accuracy of the parts.

At present, there is no manufacturing process for processing large elastic sealing rings

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