Hole system form and position error correction method

Abstract

The invention discloses a hole system form and position error correction method. The method comprises the steps that form and position precision analysis is conducted on a hole system, and a hole system form and position precision topological relation is constructed; a hole system optimization objective function and a precision constraint condition are constructed according to the topological relation, and a hole system machining error compensation model is established; according to the corresponding hole system machining standard, rough machining and semi-finish machining of a hole system part blank are completed on a machine tool, and allowance is reserved after rough machining and semi-finish machining are completed; cutting machining, shape and position precision detection, error correction calculation and compensation machining are carried out on the hole system obtained after semi-finish machining; error correction calculation is to correct a detection result by the aid of an error correction algorithm according to a hole system machining error compensation model for the hole system of which the form and position precision detection shows that the hole system does not meet the machining precision requirement, the input of the error correction algorithm is the form and position expression of the hole system which does not meet the machining precision requirement, the output of the error correction algorithm is the corresponding expected form and position expression, and the difference value between the input and the output of the hole is the amount required to be corrected by the hole; and compensation machining is performed according to the amount required to be corrected.

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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