Will the production noise of high-speed punching press affect the stamping accuracy?

    Some companies that use fast precision punching machines for stamping production have very high requirements on production and manufacturing accuracy, especially the noise of machinery and equipment that has been used for a long time has become louder, so there are some concerns about stamping processing accuracy. So, what is the noise of the fast precision punch and how is it caused? Will the noise be harmful to the stamping accuracy?

    The noise of fast precision punching machine is caused by two types: full load noise and load noise. The full load noise is the noise when the fast precision press is running without raw materials. It includes the motor noise, the impact noise caused by the clearance of the running components, the impact noise of the clutch and the transmission gear, etc. The main source of noise is the impact noise of the clutch and worm gear.

    The load noise is the noise that occurs when the fast precision punch presses the product. The different stamping die designs applied to the same fast precision punch press will cause different noises. The location of the noise caused by the precision high-speed punching machine can be divided into the following categories:

    There are three pairs of friction pairs in the crank connecting rod roller structure of the fast precision punching machine: the short head of the crankshaft and the ball cage seat of the roller; the diameter of the engine crankshaft and the crankshaft bush; the gear journal and most of the piston pins of the transmission shaft . Because of manufacturing and adjustment tolerances and their specific requirements, there is a natural tendency to have gaps in the middle of such components. The relative fitness movement among the components, when the random fitness movement is connected to the touch movement, will inevitably cause collision. The more gaps, the stronger the noise. In addition, when the gap is fixed, the more frequent the roller stroke arrangement, the more noise.

    Motor noise of fast precision punching machine. As a power device, the noise generated when the motor is running includes electromagnetic induction noise of motor winding, aerodynamic noise and mechanical equipment noise. The level size of motor noise is critically dependent on the output power and speed ratio of the motor. The electromagnetic induction noise of the motor is generally generated by the mutual effect of alternating magnetic fields that excite the rotor and stator to vibrate, and it is generally high-frequency noise.

    Clutch noise, when the clutch is closed, the general fast precision punch will cause noise. This is also the interrupted sound caused by the collision caused by the inertia moment of the roller and the crankshaft during the reciprocating operation and the centripetal force of the rotating quality of the transmission shaft. The main factors that form clutch noise are: the size of the moment of momentum encountered when the clutch is closed, and in the case of a certain quality, it is the speed of the impact rate of the high-speed precision punch; it is also related to the bending stiffness and vibration damping characteristics of the contact material itself.