A Correction Method of Form and Position Error of Hole System

Abstract

The invention discloses a hole system shape and position error correction method: analyze the shape and position accuracy of the hole system, construct the topological relationship of the shape and position accuracy of the hole system; construct the hole system optimization objective function and precision constraint conditions according to the topological relationship, and establish the hole system processing Error compensation model; according to the corresponding hole system processing standards, the rough machining and semi-finishing of the hole system part blanks are completed on the machine tool, leaving a margin after completion; the semi-finishing hole system is cut and the shape and position accuracy Detection, error correction calculation and compensation processing; error correction calculation is to correct the hole system that does not meet the machining accuracy requirements in the shape and position accuracy detection, and use the error correction algorithm to correct the detection results according to the hole system processing error compensation model, and the error correction algorithm The input is the shape and position expression of the hole system that does not meet the machining accuracy requirements, and the output is the corresponding expected shape and position expression. The difference between the input and output of the hole is the amount that needs to be corrected for the hole; compensation is made according to the amount that needs to be corrected processing.

Description

technical field [0001] The invention relates to the technical fields of mechanical processing and computer-aided manufacturing, in particular to a method for correcting hole system shape and position errors. Background technique [0002] The processing accuracy and processing efficiency of parts are getting more and more attention. However, under normal circumstances, parts with higher processing accuracy usually mean more cost input. The cost input is not only the input of manpower and material resources, but also includes time. Low cost, taking into account the production of precision and efficiency has always been the pursuit of the manufacturing industry. The machining of the holes of box body parts, especially the machining of the holes of box body parts with complex hole systems, such as gearboxes, engines, etc., is an important work content in machining. [0003] At present, the processing of holes is usually fixed on the CNC machine tool, and the holes are processed...

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Problems solved by technology

[0004] In view of this, the present invention proposes a hole system shape error correction method that can reduce the number of holes that need to be corrected and can simultaneously take into account the complex shape and position accuracy constraints, so as to solve the hole system parts that exist in the prior art with complex shape and position accuracy constraints Difficult-to-correct errors

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