The working principle of the punching machine

2021/04/13

The punching machine transmits the rotation of the motor to the crankshaft, and then moves the punch controlled by the non-slip part (commonly known as the scraper) through the connecting rod up and down. You can imagine that when a car's engine burns gasoline, it will generate pressure. This pressure is used to press down the cylinder to obtain the rotational force from the crankshaft. The working process of a punch press is exactly the opposite of this process. This will make it easier to understand. The working principle of the punching machine is that the punch moves repeatedly (usually up and down), on the contrary, the cushion part is fixed. The cushion part is fixed on the base, and is connected to the punch driving part (the driving part is generally installed on the upper part of the crown) through the frame and the connecting rod, and receives the applied pressure. The punching machine has a punch that moves repeatedly (up and down) and a fixed cushion.
Frame: Accept pressure
Cushion part: fixed mold
Punch: Do work after being loaded into the mold. Connecting rod: Connect the crankshaft and the punch to transfer energy.
Crankshaft: Convert the rotating energy into linear motion through the connecting rod. Anti-slip device: restrict the movement of the punch.
Inertia wheel/clutch The energy is stored by the inertia wheel, and the punch produces movement through the clutch being turned on or off.



The upper mold and the lower mold together form a set of molds
The press machine performs press processing after loading a press die (hereinafter referred to as a die). The mold is composed of a pair of cutters (tools). It's not difficult to understand if you think about scissors.
Firstly, one cutter is installed on the punch, and the other cutter is fixed on the cushion part.
Place the iron plate between the cutter and the cutter, and the iron plate will be cut when the punch is lowered. This pair of tools is the mold.

The mold mounted on the punch is of course called the upper mold, that is, the upper mold.
The mold for the cushion part is called the lower mold. The upper mold and the lower mold together constitute a mold.
In addition to cutting the steel plate (shearing), the mold can also bend and twist the iron plate to make it permanently deformed to obtain the desired shape.
The thing that directly deforms the material is the mold. Stamping cannot be performed without a mold. The quality and performance of molds directly affect the productivity of stamping processing and the quality of stamping processing, and play an extremely important role, which can be said to be the life of stamping processing.