Detailed explanation of acceptance criteria for sheet metal chassis processing

Acceptance Criteria Reference:
1. The parallelism of the top and bottom surfaces of the panel is 0.5mm, and the verticality of the side and bottom surfaces is 0.5mm.
2. The flatness of the bottom surface and other sides of the box is 1mm.
3. After the panel is installed in the box, it should be straightened vertically, the perpendicularity between its side and the bottom of the box is 0.5mm, and the parallelism between the bottom and the bottom of the box is 0.5mm.
4. The verticality of the front and rear or left and right elevations of the box relative to the bottom surface is 1mm.
5. When installing the circuit board or the sub-frame of the chassis, it is necessary to use the tooling to simulate the circuit board or chassis. The tooling should be smoothly inserted into and pulled out of the sub-box. . The hard-connected connectors should be positioned accurately, and there is no abnormal block in insertion and extraction.