In the processing of stamping parts, what circumstances should increase or decrease the blanking gap value

In the processing of stamping parts, what circumstances need to increase or decrease the blanking gap value as appropriate? Let's take a look; 1. Under the same conditions, according to the quality requirements of different parts and the production practice of stamping parts, the punching gap can be appropriately increased than the blanking gap; 2. When punching small holes in stamping parts (Generally, the hole diameter is smaller than the thickness of the material), the punch is easy to break, and the gap should be large; at this time, effective measures should be taken to prevent the scrap from rising; 3. The gap of the cemented carbide punching die should be 30% larger than that of the steel die. Left and right; 4. When the wall of the convex and concave die of the composite film is thin, in order to prevent expansion and cracking, according to different product quality requirements, practice to enlarge the gap of the punching die; 5. As the silicon content increases, the gap should be larger accordingly. Experiment to determine the amount of enlarged gap; 6. When the elastic pressing device is used in the processing of stamping parts, the gap can be larger, and the amount of enlarged gap can be measured according to the actual application of different elastic pressing devices; 7. When high-speed stamping, the mold is prone to heat, and the gap should be increased , If the number of strokes exceeds 200 times per minute, the gap should be increased by about 10%; 8. When electrical machining the die edge, the gap should consider the influence of the metamorphic layer; 9. When heating and punching, the gap should be reduced to reduce the gap The amount is determined by the actual situation; 10. When the die has an oblique wall edge, the gap should be smaller than that of a straight wall edge; 11. For the hole that needs to be tapped, the gap should be smaller, and the amount of gap reduction is determined by the actual situation; Recommended article: How to calculate the gap between the convex and concave molds in the production of stamping parts? Previous: Stamping parts processing factory talk about the round corner radius of the convex and concave mold