(1) Part -time clamping method and fixture selection
The clamping method of the processing parts during CNC machine tool processing should also be reasonably selected for positioning the benchmark and clamping scheme. When selecting the fine base on time, the principles of the reference unity and the overlap of the benchmark should generally follow. In addition to these two principles, we should also consider:
a. Try to complete all surface processing in a position clamping at a time. Therefore, the positioning method of facilitation of surface processing must be selected.
b. When installing the workpiece at a time, all the surface processing of the workpiece should be completed.
c. When determining the placement of the workpiece on the workbench, the impact of the processing of processing, the length and stiffness of the tool should be considered on the quality of the processing quality.
d. The fixture used in controlling processing should be selected as a fixture assembled and adjusted by the general component to shorten the production preparation cycle.
(2) Arrange processing sequence
When arranging the processing sequence, we must abide by the basic principles, including the first holes, then thick and then refined. In addition to these basic principles, we should also follow the following principles, as follows:
A. Concentrate according to the tool to avoid repeated use of the same knife to reduce the number of times and time for swords.
B. For hole systems with higher coaxiality, you should complete all the processing of the hole system after a positioning, and then deal with the hole system of other coordinate positions to eliminate the error generated during repetitive positioning and increase the coaxiality of the hole system. Essence
c. Select to determine the knife point and change the knife point. It should not be replaced after confirmation.
