The main formworks of continuous die include punch fixing plate, pressing plate, concave formworks, etc. According to the accuracy of stamping products, production quantity, processing equipment and method of die, and maintenance mode of die, there are three forms as follows: (1) block type, (2) yoke type, (3) insert type.
1. Block Type
Integral formwork is also known as integral construction, and its processing shape must be closed. The whole template is mainly used for simple structure or low precision mold, and its processing mode is mainly cutting (without heat treatment). The template adopting heat treatment must be processed by wire cutting, discharge machining and grinding. When the size of the template is long (continuous mold), two or more pieces of one body will be used together.
The design considerations of yoke formwork are as follows:
3. Insert Type
The circular or square concave part is processed in the formwork, and the massive parts are inlaid into the formwork. This kind of formwork is called inlay structure, which has less accumulated machining tolerance, high rigidity, and good accuracy and reproducibility when disassembling and assembling. Because of the advantages of easy machining, accuracy of machining, and less engineering in the final adjustment, the insert template structure has become the mainstream of precision stamping die, but its disadvantage is the need for high precision hole processing machine.
When the continuous stamping die is constructed with this template, in order to make the template have high rigidity requirements, the empty station is designed. The precautions for the construction of inlaid formwork are as follows:
Post time: Aug-19-2021