The requirement of the induction surface of the upper die seat of the automatic production line die is the technical requirement of the parts.

1, accuracy requirements, designed for the mechanical processing of the upper die holder, and the shape is relatively simple. The dimension of the parts adopts a unified design standard, and the cavity accuracy of the fixed die is required to be level 7, and the parallelism of the upper and lower surfaces is 0.02.

2. Surface quality: the roughness of the whole part is relatively high. The roughness of the upper and lower surfaces of the sprue sleeve, the cavity of the fixed grinding tool and the guide hole are all 1.6, and the roughness of other surfaces is 3.2.