Design and Choosing of CNC Machining Jig

Design and choosing the suitable jig for CNC machining, it is beneficial to reduce the auxiliary operation time, to improve the efficiency of CNC machining. When selecting the jig of the CNC machine, it should be ensured the jig is matched with the coordinate system size of the CNC machine and the work-piece dimension. When using the jig, it should be ensured the jig can clamp the work-piece, and ensured the accurate positioning of the rotary machining tooling.

During the actual design and choosing the CNC machining jig, it also should be paid attention to below problems:

1. Accurate Positioning

Accurate positioning of CNC machining jig is the foundation. For CNC programming, based on the origin of the work-piece coordinate system, to position and clamp the work-piece, then install the jig on the CNC machine, then through on the knife, determine the position relationship between the coordinate systems, to ensure the correct operation of the processing program.

2. The number of pieces of the same jig should be as many as possible

When design and choosing the CNC machining jig, it should be ensured that the jig clamps as many work-pieces as possible, to reduce the frequency time of the tool change, reduce the number of shutdowns, and improve the efficiency of CNC machining.

3. Choose a jig with higher rigidity as much as possible

During the CNC machining, it is often used the principle of process concentration, that is, the work-pieces with the same process are processed centrally. In this way, the rigidity requirements are different, it should be considered the jig with higher rigidity ASAP, to meet all the processing requirements in this process as much as possible, to reduce the processing time and improve the work efficiency.

4. Jig replacement

The actual design and choosing of the jig should be universality. During the actual using of the jig, for the different work-pieces, it should be replaced only a few of parts, without replacing the entire jig, so that it can be improve the utilization rate of the fixture, reduce production costs, improve work efficiency.

5. During actual design and choosing the CNC machining jig, it also necessary to avoid the space interference between the machine and the jig to ensure that the fixture has an accurate size.