What needs to be measured in the design and processing of automobile stamping dies?
- During the design and manufacture of the blanking die, the following five points should be paid attention to:
In the design and manufacturing process of automobile stamping die, the first thing to consider is its price, which ultimately affects the sales of the product.
The die often determines the safety factor of the car. Therefore, the quality of the die directly affects the sales of the product.
In addition, in the die stamping design, humanization is also an important factor to be considered. At the same time, attention should be paid to its maintenance and maintenance, so that the local replaceability of the mold is stronger. For more frequent parts, a higher bar should be set in the design, which is very beneficial for both parties. However, China’s auto industry rarely considers the humanization of stamping dies, and simply focuses on the simplification of processing and production processes, resulting in a lack of standardization of die parts and making maintenance more difficult.
4. Raw materials:
In recent years, my country has a great advantage in the selection of automotive die materials, mostly using alloy steel or alloy cast iron.
In the process of mold manufacturing, the degree of fit and the consistency of the gap between the components directly affects the accuracy of each component.
2. Maintenance of automobile stamping die
Due to the poor working environment of automobile stamping dies, in the process of use, working parts, matching parts, sliding position wear and even damage often occur. However, due to the complex design and manufacturing process of the mold, high precision, long cycle and high cost, problems should be repaired in time during use to ensure accuracy and improve service life.
Although the maintenance of automobile stamping dies is very complicated, there are the following seven common faults and maintenance methods:
1. Flanging to form the deformation of the part:
Parts, especially the surface part, are often deformed during the flanging and forming process, which has a great impact on the quality of the parts. The usual solution is to increase the pressing force. If it is a spring pressing, you can use a spring method. For air cushion pressing, generally increase the air cushion force. If there is still local deformation after increasing the pressure, you need to find out the specific problem and detect the pressing material Whether there is a local depression on the surface, you can use the welding feeder plate, then weld the pressure plate, and then grind it with the lower surface.
2. Knife edge collapse:
The knife edge problem is one of the problems often encountered during the use of the mold. For example, for the miniaturized blade type, the chipping part is usually ground with a grinder, and the corresponding welding rod is used for welding to ensure that the welding is firm and not easy to chip again.
The chipping of the edge mainly occurs in the processes of stretching, forming, and flanging. Find out the position where the mold should be pulled, flatten it with a whetstone, pay attention to the uniform size of the rounded corners, and then polish it with fine sandpaper.
4. Trimming and punching tape:
When trimming or punching, the die material or punching device is abnormal, resulting in trimming and punching. At this time, the corresponding parts of the mold should also be found according to the parts. If there is an abnormality in the molded unloading plate, repair welding should be carried out on the pressing plate. If there is no problem with the pressing of the die, you can check whether the die block has any burrs.
5. The waste is cut off:
Because the operator did not remove the waste in time during the production process, the waste was accumulated. Finally, under the pressure of the trimming block, it causes the scrap cutter to chip, thereby allowing the scrap to be cut. The repair method is similar to that of trimming and chipping.
Due to the gap between the edges of the die, burrs appear in the parts during trimming, punching and blanking. When the gap is large, the trimming and punching process adopts the method of trimming the concave die with a punch. In the blanking process, the trimming of the punch adopts the method that the die remains unchanged. When the mold gap is adjusted, it should be adjusted according to the size of the mold gap to ensure the rationality of the gap. The trimming and punching die adopts the method of placing the gap in the die. For the blanking die, the punching method should be used to ensure that the size of the parts does not change before and after repairing.
7. Punching waste blockage:
Due to the uneven waste channel, the reverse taper of the waste channel, and the failure to clean up the waste in time, the punching waste is blocked. A and B have smooth surfaces and equal diameters, which can ensure that waste products are not blocked.
The above content is related to the design, manufacture and maintenance of automobile stamping dies. At present, there are a large number of stamping die design companies in the market, but the quality is uneven. Therefore, it is very important to choose a suitable mold processing company. Hope this article can help readers.