Numerically-controlled machine tool comprehensive error three-stage optimized compensation method on basis of modifying NC program
A CNC machine tool and comprehensive error technology, which is applied in the direction of program control, computer control, general control system, etc., can solve the problems of lack of error compensation methods, machining accuracy attenuation, etc.
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[0062] Below is an exemplary description of using the method of the present invention to perform error compensation on a large-scale A / B double-swing angle five-axis linkage CNC gantry milling machine. Before adopting the method of the present invention, the NC program of the workpiece numerical control machining is as follows image 3 shown.
[0063] Carry out comprehensive error measurement and identification on a large-scale A / B double-swing angle five-axis linkage CNC gantry milling machine, and establish its pose error prediction model Equation 3) as follows
[0064]
[0065] Based on the NC program of a certain type of part, when the following block is read, according to figure 2 , for error compensation.
[0066] N35X35.Y-55.Z0.
[0067] N40G00X35.Y-55.Z15.
[0068] Set the original point D 1 (X 1 ,Y 1 ,Z 1 ) and D 2 (X 2 ,Y 2 ,Z 2 ); first calculate the distance between two points, as follows
[0069] | D ...
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