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Lubrication method of ball head of pneumatic punch
The structure of the ball head and ball bowl of the pneumatic punch press and its related parts are one of the core devices of the punch press. There are three main functions on the pneumatic punch press. One is the die height adjustment of the punch slider, and the other is the hydraulic overload protection and adjustment of the nut and guide post. The clearance of the screw thread is eliminated, and the third is that the guide post and guide rod drive the slider to reciprocate up and down for punching. Because the punch ball head ball bowl and its associated parts have many functions and complex structures, the currently used ball Most of the head ball bowl structures are lubricated by oil immersion. The lubricating oil is stored in the oil chamber at the upper part of the punch. The lubricating oil flows down from the oil chamber by gravity, and then lubricates the ball head ball bowl and other parts. The lubricating oil cannot be recycled.
Since the oil-immersed lubricating oil pressure is close to zero, when the pneumatic punch works at high speed and heavy load, the relative movement speed of the ball head and the ball bowl is fast, and the contact surface gap is close to zero, so it is difficult for the lubricating oil to enter the contact surface, and it is easy to produce a ball head. Problems such as heating of the ball, rapid wear and burn, etc., will affect the running accuracy of the slider, resulting in the pneumatic punch not working properly.
Now the general punch press adopts a circulating lubrication and cooling structure. The lubricating oil self-lubricates the oil inlet pipe of the pump station, enters the punch block cylinder from the oil inlet, and enters the piston cavity along the piston port on the side of the hydraulic pad piston. When the lubricating oil continues to enter, When the oil pressure in the inner cavity of the piston reaches a certain value, the lubricating oil rises along the through oil hole of the guide post screw, and then enters the lubricating oil of the lower bowl. The lubricating oil comes out from the oil inlet and faces the ball head of the bowl along the lower bowl ball For lubrication, the lubricating oil of the lower bowl continuously flows out, and the oil level in the space formed by the upper and lower bowls rises continuously. When the oil pressure reaches a certain value, it will flow back into the lubricating pump station along the oil return pipe, thereby realizing the circulation of the lubricating oil. lubricating.
The ball head has an irreplaceable role in the pneumatic punch. Usually, when we use it, we should pay attention to its lubrication condition, so that it can be repaired by warranty to ensure the normal production.
Zhejiang Bole Heavy Machine Manufacturing Co., Ltd. (Hangzhou Hang Shanghai Machine Tool Manufacturing Co., Ltd.)
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