Sheet Metal · 2021年5月7日

How to choose the mold in the sheet metal processing process?

Sheet metal processing has become a very important content in the industry. In the entire process of sheet metal processing, the selection of molds for sheet metal processing is an important link. You need to be careful about the type of mold selection and the position of the mold. In consideration of the considerations, then I will introduce the details of choosing the mold below.


The factors that need to be considered during mold selection include the cutting form and whether it can meet the specified use standards. Planning and designing the machining process can reduce the time loss in the mold determination phase. The control mode of the production and processing lathe also affects the determination of the mold. If an unreasonable mold is used, it is easy to cause damage to the lathe. Choosing a suitable processing mold can greatly reduce and shorten the mold setting time and equipment running time, and can effectively improve the utilization efficiency of the plate, so as to reduce the corresponding processing cost while improving the production efficiency.


1. Select the mold type

The molds selected for different sheet metal processing processes are different. Normally, it is necessary to continue the refinement treatment after the initial molding. The initially selected molds are not too fine to reduce the time lost in the processing stage. The secondary processing requires higher precision, and the planning and design of the processing flow has a serious impact on the stability of the final result, and the overall flow needs to be planned before the processing tasks are carried out.


2. Select the gap between the upper and lower molds of the mold

The so-called gap between the upper and lower molds of the mold refers to the actual difference between the diameter of the upper mold and the diameter of the lower mold. For example, if the diameter of the upper mold is 10mm and the diameter of the lower mold is 10.3mm, the gap is 0.3mm. When selecting the gap between the upper and lower molds of the mold, it should be based on the actual material and thickness of the plate. If an unreasonable gap is selected, then the processed sheet metal parts will produce more burrs and greatly shorten the actual service life of the mold.


Three, choose the mold station

This aspect mainly refers to two aspects: one is the selection of specific working positions during parts processing; the other is the selection of the corresponding punching force. When performing sheet metal processing operations, it is necessary to determine the selected station of the mold to reduce the time for the operator to replace the mold. It is forbidden to place any punching mold around the mold to avoid scrapping of parts or damage to the mold. In addition, the punching force required for processing sheet metal parts needs to be finalized according to its trimming length, material thickness and material. The formula is as follows: P=Atr/1000 In this formula, P represents the punching force, and A represents The cutting edge length, t represents the material thickness, and r represents the material coefficient.