Punching Machine
Punching machine is a type of machine tool used to punch and to produce holes, holes in the machinery parts for the purpose of connecting and connecting with the components. It has great significance in the field of industrial production and is widely used.
Punching machines can be broadly divided into two categories: mechanical and hydraulic. The former is usually used in the production of low-precision parts and low-load operations, while the latter is suitable for precision machining and punching of high-precision parts and high-load operations. Mechanical punching machines are usually driven by gears and racks, while hydraulic punching machines are usually driven by hydraulic pressure.
In the mechanical punching machine, the operator is required to locate the position of the hole, start the machine and move or rotate the material according to the position of the hole. The hydraulic punching machine is equipped with a hydraulic cylinder which can be used to drive the punch head to move. The operator only needs to press the switch to start the machine and then the hydraulic cylinder will complete the rest of the processing.
The working principle of punching machine is very simple, it is to use the heat expansion method and the additional force of the die to finish the punching process. The two plates that are going to be punched are clamped on the workbench of the machine. A punch is placed on the workpiece and then the punch head is driven by a motor. When the punch is pressed onto the workpiece, the metal material locally deforms and a hole is formed.
In the punching process, proper hardness of the punch and the material of the workpiece should be used. The hardness of the punch must be consistent with the material of the workpiece to achieve the desired effect. If the punch is too hard, it could cause the material to fracture; if it is too soft, the punch may become stuck in the material and the effect of punching is affected. The grinding of punches is also very important. If the tip of the punch is not well ground, the precision of the holes would not be satisfactory.
The quality of the punched parts depends on the accuracy of the punching machine. Therefore, in order to improve the accuracy, the gap between the punch and the hole should be properly adjusted. If the gap is too small, it could easily cause chipping or cracking during the punching process. If the gap is too large, the punching effect will be bad. Therefore, proper adjustment of the gap is very important to ensure the quality of punched parts.
In conclusion, the punching machine is an important tool used in industrial production and it is widely used in many industries. It is important to identify the correct punching machine according to the type of the parts to be punched and the precision of the parts required. Therefore, proper maintenance and adjustment of the punching machine is critical in ensuring the quality of the parts.
