Teach you to master hardware stamping mould design principle of blanking clearance

A new set of hardware stamping die in the test process will meet all kinds of test questions, the most common among all these problems, the most worthy of attention, but also the most neglected problem is 'the blanking clearance'. Metal stamping die blanking clearance directly decide the size of the dimension precision blanking pieces and cross section quality, determines the service life of the punch, blade, and the selection of mold tonnage has a certain influence. Therefore, blanking clearance of moulds is very important. The metal stamping parts blanking clearance the selection will be more reasonable, more in line with our requirements? In fact, there is no accurate answer. Because, the relationship between the blanking clearance is influence each other and interacting. With the old saying 'you cannot sell the cow and drink the milk' to describe very well. Increased, such as metal stamping parts blanking clearance blanking force decrease, reduced the punch edge wear and tonnage,, section fall Angle increases, but the burr affect dimensional precision, etc. Best way is to choose reasonable blanking clearance, and need a reasonable choice according to the requirements of customers for products. For the most part the blanking clearance values within 5% of the thickness of the material, clearance increases, hardware stamping hole size decreased, when the gap between 5% ~ 25%, product size change is not big, when more than 25%, product size again decreased; Metal stamping parts the reasonable selection of hardware stamping parts blanking clearance size points: inner hole, appearance size, according to its punch blanking clearance, knife edge wear reasonable allocation is very important. According to the punching size will be subject to the punch, the principle of baiting size will be subject to the blade. The value principle: ( 1) Metal stamping parts dimension, blade for product appearance, put the punch clearance, namely negative gap. ( 2) Metal stamping parts inner hole size, punch for the product, the actual size blade clearance, is the blade made it big. This for bilateral relatively reasonable clearance, clearance can be appropriate scale according to actual situation. For lack of experience of primary mold designers, can have very good guidance function. 【 Relevant recommendation 】 Details: how much do you know the new energy automotive stamping parts? Details: sharing details of stamping processing industry: precision metal stamping parts figure how to draw, please be aware that this several steps