Plain Blanking: The plain blanking operation consists of a punch going through the material during the working stroke & on the return stroke the material is lifted with the punch & is removed by stripped plate. Piercing: The operation consists of simple hole punching. Punching is the scrap & the strip is the work piece. Cutting off: A cut off operation separates the work material along straight line in a single line cut. Shaving: Shaving is a secondary operation, usually following punching, in which the surface of the previously cut edge is finished smoothly to accurate dimensions.
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