As a skilled operator, he must understand the requirements of the processed parts, process routes, and machine tool characteristics before he can manipulate the machine tool to complete various processing tasks. Therefore, a few operating points are organized for reference:
1. In order to simplify the positioning and installation, each positioning surface of the fixture should have precise coordinate dimensions relative to the machining origin of the machining center.
Ensure that the part installation position is consistent with the selected workpiece coordinate system and machine tool coordinate system direction and oriented installation. It can be disassembled in a short time and changed into a fixture suitable for new workpieces. Since the auxiliary time of the machining center has been compressed to a very short time, the loading and unloading of the supporting fixtures cannot take much time.
2. The fixture should have as few components as possible and high rigidity.
3. The fixture should be as open as possible, the space position of the clamping element can be as low as possible, and the installation fixture should not interfere with the tool path of the workpiece.
4. Ensure that all the processing content of the workpiece is completed within the stroke range of the spindle.
5. For vertical machining center manufacturers with interactive worktables, the fixture design must prevent the space interference between the fixture and the machine tool due to the movement, lifting, lowering, and rotation of the worktable.
6. Try to complete all processing content in one clamping. When it is necessary to replace the clamping point, pay special attention not to damage the positioning accuracy due to the replacement of the clamping point, and explain it in the process file if necessary.
7. For the contact between the bottom surface of the fixture and the worktable, the flatness of the bottom surface of the fixture must be within 0.01-0.02mm, and the surface roughness should not be greater than ra3.2m.
