Problem Description: 

The dimensions of the stamped parts deviate from the designed dimensions and exceed the allowable tolerance range.

Cause Analysis: 

The precision of die design and manufacturing is insufficient, such as uneven die clearance and insufficient machining precision of parts. The precision of the stamping equipment has decreased, resulting in inaccurate movement of the die during the stamping process. The large thickness tolerance of the material affects the dimensional stability of the stamped parts.

Solution:

Improve the level of die design and manufacturing. Adopt high-precision machining equipment and advanced machining processes to ensure that the die clearance is uniform and the dimensional precision of parts meets the requirements. Regularly maintain and service the stamping equipment, check the precision indicators of the equipment, such as the parallelism and perpendicularity of the slider, and promptly repair or replace the worn parts. Strictly control the quality of raw materials, conduct thickness detection on each batch of materials, and select sheet metals whose thickness tolerance meets the requirements.