Operation key of CNC four-axis machining:

1. In order to simplify positioning and safety, each positioning surface of the fixture should have an accurate coordinate size relative to the origin of the machining center.

2. To ensure that the installation orientation of the parts is consistent with the direction of the workpiece coordinate system and the machine coordinate system selected in the programming, and directional installation.

3. It can be disassembled for a short time and changed into a fixture suitable for the new workpiece. Because the auxiliary time of machining center has been compressed very short cnc hand plate processing, the loading and unloading of supporting fixtures can not occupy too many moments.

4. The fixture should have as few components as possible and high stiffness.

5. The fixture should be opened as far as possible, the space azimuth of the clamping element is low, and the installation fixture can not be dry with the tool track.

6. Ensure that the processing content of the workpiece is completed within the travel range of the spindle.

7. Regarding the processing center with interactive operation table, due to the movement, upper support, lower support and rotation of the operation table, it is necessary to avoid the space between the fixture and machine tool of cnc hand plate processing fixture planning.

8. Try to complete all the processing content in one clamping. When the clamping point must be replaced, special attention should be paid to not damage the positioning accuracy due to the replacement of the clamping point, if necessary in the process document.

9. When touching the bottom surface of the fixture with the working platform, it is necessary to ensure that the flatness of the bottom surface of the fixture is within 0.01-0.02mm and the surface roughness is no more than Ra3.2um.