Piston outer circle modeling method

Abstract

The invention embodiment discloses a piston outer circle modeling method which adopts spiral to get points and model. The modeling method is coincident with a processing route. Modeling process fits in with thinking habit of people. The piston outer circle modeling method has the advantages of being high in modeling accuracy due to the fact that ovality is in linear change on a whole helical line, good in response continuity of a linear motor of a machine tool in the process of machining, and capable of improving accuracy and degree of finish of a piston.

Description

technical field [0001] The invention belongs to the field of pistons, in particular to a method for modeling the outer circle of a piston. Background technique [0002] With the advancement of science and technology, the research and application fields of piston CNC turning technology have achieved rapid development, and various forms of CNC piston lathes have emerged. However, due to the increasingly complex design of the piston and the higher and higher requirements for the processing accuracy, smoothness and processing efficiency of the special-shaped outer circle, new challenges are constantly posed to the manufacturing technology of the piston. [0003] The shape of the outer circle of the piston is complex and diverse. In the cross-sectional direction, there are primary ellipse, secondary ellipse, eccentric ellipse, asymmetrical ellipse, plum-blossom ellipse, other types of ellipse, etc.; figure 1 Shown is a convex drum-shaped primary oval piston skirt, the cross-sect...

AI Technical Summary

Problems solved by technology

In the actual processing process, since the tool feeds in a helical direction, its actual height on a section is h n with h n+1 Incrementally, when the t value is required to be relatively large, if you continue to process according to this model, the precision and smoothness of the processed piston will not meet the requirements for use

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