There are many ways of precision machining, such as heat treatment. Parts, refers to a single piece of machinery that can not be separated, is the basic component of the machine, but also the basic unit in the process of mechanical manufacturing. The manufacturing process generally does not need assembly process. Such as shaft sleeve, bearing bush, nut, crankshaft, blade, gear, cam, connecting rod body, connecting rod head, etc.

Numerical control machine tools in batch processing precision mechanical parts, especially pay attention to the accuracy of processing, then precision machining should pay attention to what problems?

1、 The machining precision of batch parts is poor

Generally, the feed dynamics between the shafts are not adjusted according to the error during installation and adjustment, or the transmission chain of each axis of the machine tool has changed due to wear. It can be solved by readjusting and modifying the clearance compensation. When the dynamic tracking error is too large and alarm, you can check whether the servo motor speed is too high. Whether the position detection element is in good condition. Whether the position feedback cable connector is in good contact. Whether the corresponding analog output latch and gain potentiometer are in good condition. Whether the corresponding servo drive device is normal.

2、 When the machine tool is in motion, it causes poor machining accuracy

It may be that the acceleration and deceleration time is too short, so the speed change time can be appropriately extended. It is also possible that the connection between the servo motor and the lead screw is loose or the rigidity is too poor, which can appropriately reduce the gain of the position ring. 3、 The roundness is out of tolerance when two axes are linked together. Axial deformation of the circle: this deformation may be caused by mechanical adjustment. If the positioning accuracy of the shaft is not good or the gap compensation of the lead screw is improper, the roundness error will be produced when the image limit is exceeded. Oblique ellipse error: in this case, the position deviation value of each axis should be checked first. If the deviation is too large, adjust the position loop gain to eliminate. Then check whether the interface board of resolver or inductosyn is adjusted well, and then check whether the mechanical transmission pair clearance is too large and whether the gap compensation is appropriate.