As a skilled operator, one must understand the requirements, process routes, and machine characteristics of the processed parts before operating the machine to complete various processing tasks. Key points of operation:

1) In order to simplify positioning and installation, each positioning surface of the fixture should have precise coordinate dimensions relative to the machining origin of the machining center.

2) To ensure the consistency between the installation orientation of the parts and the selected workpiece coordinate system and machine coordinate system in programming, as well as directional installation.

3) It can be disassembled in a short period of time and converted into a fixture suitable for new workpieces. Due to the compressed auxiliary time of the machining center, the loading and unloading of supporting fixtures cannot take up too much time.

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

5) The fixture should be as open as possible, and the spatial position of the clamping components should be as low as possible. The installation of the fixture should not interfere with the tool path of the work step.

6) Ensure that all machining tasks of the workpiece are completed within the stroke range of the spindle.

7) For machining centers with interactive workbenches, the fixture design must prevent spatial interference between the fixture and the machine tool due to the movement, up support, down support, and rotation of the worktable.

8) Try to complete all processing tasks in one clamping process. When it is necessary to replace the clamping point, special attention should be paid not to damage the positioning accuracy due to the replacement of the clamping point. If necessary, it should be explained in the process document.

9) The contact between the bottom surface of the fixture and the workbench must ensure that the flatness of the bottom surface of the fixture is within 0.01-0.02mm, and the surface roughness is not greater than Ra3.2um.