The commonly used tooling and fixture are mainly divided into the following categories according to their functionality: clamping mould drilling and milling tooling numerical control and instrument clamping head gas and water testing tooling trimming and punching tooling welding tooling polishing fixture assembly tooling pad printing, laser lettering tooling Clamping mould Definition: tools for positioning and clamping with product shape Key design points: This kind of clamping die is mainly used on vice, and its length can be cut as required; Other auxiliary positioning devices can be designed on the clamping die, which is generally connected by welding; The figure above is a diagram, and the die cavity structure size is determined by the specific situation; Fit the locating pin with diameter 12 tightly at the appropriate position on the moving die, and slide the locating hole at the corresponding position of the fixed die to fit the locating pin; During t