Any parts are processed with precision requirements, and if the parts are found to be processed with poor precision during inspection, such products are likely to become substandard. Then for the parts, its processing accuracy why it will become poor?
Non-standard precision parts machining accuracy is poor to a large extent because in the equipment installation and adjustment, the feed dynamic tracking error between the axes is not adjusted; or because the machine use after wear, the machine tool axis drive chain has changed. In this case, can be re-adjusted and modify the amount of clearance compensation to solve.
So when the non-standard precision parts processing ready dynamic tracking error is too large and alarm, can check its servo motor speed is too high; position detection components are good; position feedback cable connector is good contact; the corresponding analog output latch, gain potentiometer is good; the corresponding servo drive device is normal, and timely maintenance.
Of course, if the machine tool movement overshoot will also cause parts processing accuracy is not good, for example, is too short acceleration and deceleration time, can be appropriate to extend the speed change time; may also be the servo motor and screw between the connection is loose or rigid is too poor, can be appropriate to reduce the position ring gain.
In addition, when the non-standard precision parts processing equipment of the two-axis linkage, the circle of axial deformation and oblique ellipse error and other factors under the influence of the parts processing accuracy will also become poor. Among the deformation may be caused by the machinery is not well adjusted; and oblique ellipse error need to first check the position deviation value of each axis, if the deviation is too large, can adjust the position ring gain to exclude.
Then check whether the rotary drive or induction synchronizer interface plate is well adjusted, and then check whether the mechanical drive vice clearance is too large, whether the clearance compensation is appropriate, etc., to determine the root cause of poor machining accuracy of the parts.