How to determine the stamping direction of automobile stamping parts?

2019-09-30 09:44:59

Stamping part is the production technology of product parts with a certain shape, size and performance, by means of the power of conventional or special stamping equipment, so that the sheet metal is directly subjected to deformation force and deformation in the die. Sheet metal, die and equipment are the three elements of stamping. Stamping is a method of metal cold deformation processing. Therefore, it is called cold stamping or sheet metal stamping, short for stamping. Rongzhi automotive stamping parts indicate that it is one of the main methods of metal plastic processing (or pressure processing), and also belongs to material forming engineering technology.

About 50-60% of the world's steel products are made of sheet metal, most of which are stamped and pressed products. Car body, radiator, drum of steam cooker, shell of container, iron core silicon steel sheet of motor and electrical appliances, etc. are stamped. There are also a large number of stamping parts in instruments, household appliances, office rigidity, storage utensils and other products. Stamping is a high-efficiency measure. The compound die is a multi-position progressive die. It can complete the multi-channel stamping operation on a press and complete the automatic generation of materials. It has the advantages of fast generation, long rest time, low cost and hundreds of pieces per minute. It is loved by many processing factories.

The stamping parts of automobiles have the characteristics of thin, uniform, light and strong. Stamping can produce workpieces with reinforcing ribs, ribs, winding or flanging, which are difficult to manufacture in this familiar diameter, in order to improve its rigidity. Rongzhi automotive stamping parts indicate that because of rejecting rough dies, the accuracy of the workpiece can reach micron level, and the accuracy is high, the specifications are consistent, and can punch holes, protrusions and so on. In actual production, process tests similar to stamping process, such as drawing performance test and bulging performance test, are often used to test the stamping performance of materials, so as to ensure the quality of finished products and high qualified rate.

Stamping equipment is usually equipped with a stagnant press, in addition to forming thick plates by a hydraulic press. With the focus of modern high-speed multi-station condensation press, the passive stamping line with high critical rate can be formed by installing equipment, such as uncoiling, collecting and delivering finished products, and placing the mould library and rapid die change, and using computer-based French tube bundles.

The stamping direction of parts is the first problem to determine the stamping process. It not only determines whether the stamping parts can be drawn satisfactorily, but also affects the number of process supplementary parts and the shape of the blank surface. Reasonable determination of stamping direction of stamping parts should meet the following three requirements. Rongzhi automobile stamping parts analysis:

(1) To ensure that the punch can enter the die.

(2) Enlarge the area where the punch contacts the blank. The bigger the contact surface is, the smaller the angle between the contact surface and the horizontal surface is. The more difficult the blank is to produce local stress overload and cause the parts to crack. It is easy to obtain complete punch shape and improve the deformation degree of parts.

(3) The feed resistance of each part of the pressing surface should be uniform and reliable. Uniform drawing depth is the main condition to ensure uniform and reliable feeding resistance of each part of the pressing surface. The uniform feed resistance of each part of the pressing surface is an important guarantee to ensure that the stamping parts do not wrinkle and crack.