Cold die clearances between control and adjusting method
Cold stamping mould convex, concave die size and distribution of the clearance degree directly affect the quality of the blanking pieces and the length of the service life of the die. Precision stamping partsIn guarantee blanking pieces space is mould manufacturing assembly very important link, and assembly quality will directly influence the convex, concave die if the clearance between the uniform. Such as the process of convex, concave die size precision although already meet the requirements, but in assembling if adjustment is bad, can cause clearance does not even, rushed out of the spare parts of the raw edges. Even rushed out of unqualified parts. The mold assembly is key to control convex, concave die of relative positions, in order to ensure that the convex, concave die, uniform and the clearance between the right to rush out of qualified parts.
Die before assembly the problems that should be paid attention
Convex, concave die and mould parts itself is clearance of the precision, and the assembly of the assembly process is reasonable. In order to ensure that the position of the convex, concave die correctly and gaps even, mould design, processing to assembly from the whole link should pay attention to the following questions：
（1）Convex, concave die design and manufacture of the right
Design should be based on the above all when die cutting the section of a quality, service life of die factors such as the reasonable selection of convex, concave die clearance. And to consider the mould in the process of using that gap wear increases, Precision stamping parts general in the design the least reasonable clearance when mould. And in the manufacturing process can ensure the parts processing precision and quality, in the assembly process ensure convex, concave die gap even, this for processing complex shape is very key parts.
（2）Assembly method the choice should be reasonable
Die assembly method include roughly assembly method and direct with assembly method. Before the assembly must be carefully study mold assembly drawing, full consideration and analysis of the structure characteristics of punching die, Precision stamping partsdie parts processing technology and processing accuracy etc, in order to choose convenient, accurate and reliable assembly method to ensure the quality of blanking pieces