Analysis of common methods and characteristics of gap adjustment of metal stamping dies

In the production process of metal stamping parts, the gap between the die and the punch of the stamping die needs to be accurate and reasonable, otherwise it will have various adverse effects on the stamping process, such as affecting the life of the die, the impact on the quality of the section, and the The influence of dimensional accuracy and so on. Next, the author of Precision will analyze the common methods and characteristics of gap adjustment of metal stamping dies for everyone. 1. The light transmission method puts the cushion block between the fixed plate and the concave mold, and clamps it with clamps; flips the stamping mold, clamps the mold handle on the flat-nose clamp, irradiates it with a flashlight or flashlight, and places it in the lower mold. Observe in the leaking hole. Determine the gap size and uniform distribution according to the light transmission. When it is found that the light transmitted between the male mold and the female mold is too much in a certain direction, it indicates that the gap is too large. Hit the corresponding side with a hammer to make the male mold move in a larger direction, and then repeat the penetration. Light, adjust to the right. Features: The method is simple, easy to operate, but more labor-intensive, suitable for small stamping die assembly. 2. Coating method: Apply a layer of paint (such as enamel or amino alkyd insulating paint, etc.) on the convex mold, the thickness of which is equal to the matching gap (single side) of the convex and concave molds, and then insert the convex mold into the hole of the concave mold to obtain Uniform blanking gap. Features: This method is simple and suitable for stamping dies that cannot be adjusted by the gasket method (small gap). 3. Measuring method insert the convex mold into the hole of the concave model, check the fit gap of different parts of the convex and concave mold with a feeler gauge, adjust the relative position between the convex and concave molds according to the inspection results, so that the gap between the two in each part is consistent . Features: Simple method, convenient operation, suitable for large gap molds with male and female molds with a clearance (single side) above 0.02mm. 4. Copper plating method The copper plating method is similar to the coating method. The working end of the punch is plated with a copper layer with a thickness equal to the unilateral clearance of the convex and concave molds instead of the paint layer, so that the convex and concave molds can obtain a uniform clearance. . The thickness of the coating is controlled by current and electroplating time. The thickness is uniform and it is easy to ensure a uniform die blanking gap. The coating can be peeled off by itself during the use of the mold and does not need to be removed after assembly. Features: Uniform gap but complicated process. 5. Gasket method According to the size of the matching gap between the male and female molds, padded paper strips (fragile and unreliable) or metal sheets with uniform thickness in the matching gap between the male and female molds to make the clearance between the male and female molds uniform. Features: The process is more complicated, but the effect is ideal, and the gap after adjustment is uniform. Guangdong Precision, a manufacturer of precision metal stamping and metal insert injection molding, provides one-stop solutions for precision metal stamping, metal drawing and metal insert injection molding. Welcome to consult. [Related recommendation] Learn more: What are the methods for polishing the surface of stainless steel? Learn more: Manufacturing characteristics of automobile stamping parts molds Learn more: Points to note in the design of continuous stamping dies (2)