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Process characteristics of punching die in stamping die

by:Fortuna     2021-03-04
Stamping parts processing plant, processing various metal stamping parts, metal stamping parts, stainless steel stamping parts, mechanical parts, etc., can be customized according to drawings, and there are many types of stamping dies. Today I’m going to talk about the punching die; the structure of the punching die is similar to that of the general blanking die, but the punching die has its own characteristics. The object of the punching die is the semi-finished product that has been blanked or other stamped parts, so the punching die Hole molds need to solve how to position the semi-finished product on the mold, how to put the semi-finished product into the mold, and how to take it out after punching is convenient and safe; punching dies are divided into several types according to process characteristics; guide pillar punching dies; its characteristic is stamping All the holes on the part are punched out at one time. It is a single-process punching die with multiple punches. When the workpiece is a hollow part that has been stretched, and the hole edge is close to the side wall, the positioning ring is used to perform shape positioning. To ensure that the die has sufficient strength. In addition, the strength and stability of the punch must be paid attention to when designing. If the distance between the edge of the hole and the side wall is large, the mouth of the workpiece can be downward, and the concave film can be used for internal positioning. The mold adopts an elastic discharge device. In addition to the discharge function, the device can also ensure the flatness of the punched parts and improve the quality of the punched parts; punching the side hole die; its characteristic is that the positioner rocker arm is opened before the punching starts , Put the process parts on the concave mold body, then release the rocker arm, and punch down the convex mold, that is, punch out the first hole, and the cumulative error of the hole distance is relatively large. Therefore, this punching die is mainly used for side punching or grooving of small hollow parts with small batches and low hole spacing requirements; oblique wedge-type horizontal punching die, the biggest feature of this stamping die is to rely on oblique wedge The vertical movement of the press slider is changed to the horizontal movement of the slider, thereby driving the punch to punch in the horizontal direction. The alignment of the convex mold and the concave film is ensured by the sliding of the slider in the guide chute. The working angle a of the oblique wedge is 40°~50°, generally 40°; when a larger punching force is required, the angle a can also be 30° to increase the horizontal thrust. If in order to obtain a larger working stroke, the angle a can be increased to 60°. The difference between the small hole punching die and the general punching die is; the punching die enters the working part of the material to be punched during the working stroke, and all the rest Obtain uninterrupted guiding effect, thus greatly improving the stability and strength of the punch. It should be noted that the blanking of the die orifice must be unblocked when punching small holes to prevent the waste from clogging, otherwise it will damage the punch; article recommendation: hardware A brief introduction to the compound mould in the stamping part mouldPrevious article: A brief introduction to the intermediate progressive mould in the stamping part mould
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