Machining error correction system and method based on key dimensional associations

A machining error correction system comprising:

• a processor;
• and
• a storage medium storing a plurality of instructions, which when executed by the processor, cause the processor to:
• set initial operating parameters according to a predetermined machining program, the initial operating parameters comprising clamping parameters and dimensional inspection standards;
• obtain predetermined detection data during machining of a product;
• filter the predetermined detection data according to a predetermined rule and the dimensional inspection standard, comprising:
• determining an ideal value of the predetermined detection data according to the dimensional inspection standard;
• determining a screening range according to the ideal value;
• filtering the predetermined detection data according to the screening range to obtain filtered detection data;
• calculating a first standard deviation according to the filtered detection data;
• removing a maximum value or a minimum value from the filtered detection data to obtain removed detection data, and calculating a second standard deviation according to the removed detection data;
• deleting the predetermined detection data when the second standard deviation is greater than the first standard deviation;
• and
• retaining the predetermined detection data when the second standard deviation is less than the first standard deviation;
• analyze the predetermined detection data, and calculating correction parameters according to a predetermined correction model, the step of analyzing the predetermined detection data comprising:
• establishing key dimensional associations of key dimensions according to the predetermined machining program and positioning references, wherein the key dimensions comprise all dimensions that are changed and correspondingly cause other dimensions to change;
• the key dimensional associations comprising a relationship between the dimensions that are changed and the correspondingly changed dimensions;
• and
• calculating the correction parameters corresponding to the key dimensions according to an association among the predetermined detection data, inspection parameters, and the key dimensions;
• distribute the correction parameters to a corresponding machining apparatus;
• and
• correct a machining parameter of the corresponding machining apparatus according to the correction parameters.