​Punching machine is too loud, how to reduce the noise?

    Punching machine is too loud, how to reduce the noise?

     Punch presses are a very common processing tool in a wide range of machinery and equipment, and the sound they make is very conspicuous. The noise in a punch press workshop can usually be as high as 90-110dB(A), which poses a huge threat to the health of the staff and also negatively affects the surrounding acoustic environment.
Noise control methods caused by punching machines
First, in order to reduce the noise of the sound source, the key reduction method lies in the precise control of the sound source.
     1, for the noise reduction characteristics of the punch press: in the selection of relevant equipment, we should try to choose the punch press device with more slight noise under the cost permit.
     2, mitigate the noise generated by the mold: the designers of the die often do not take the noise into account. By properly selecting the fit distance of the concave and convex molds, noise reduction of up to 5dBA can be achieved, and change the geometry of the bump. Noise reduction of 5-10 dBA can also be achieved by using stepped dies and beveled edge dies instead of flat dies. However, because the geometry of the part often appears complex to begin with, this adds to the challenges of machining the mold. In addition to this, the mold design also involves the addition of a buffer as well as reducing noise interference during unloading.
     3. Elimination of noise in the office environment
In the design of mechanical presses, commonly used crank slider type transmission device, in order to reduce the working clearance, bearings need to be installed in strict accordance with the established installation specifications, at the same time, the fit clearance during assembly needs to be properly optimized and adjusted. The clearance of the bearings will be gradually enlarged when the movement is carried out, and at this time, a lubricant with high viscosity can be selected to increase damping and help reduce the noise of the punch press in the no-load condition.heat dissipation plate high-speed stamping machine

heat dissipation plate high-speed stamping machine

     4、Improve the structure of punching machine
Series of open double column fixed platform punch press and series of open double leaning punch press to use friction clutch. Punching machine transmission system with more spur gear transmission, open punch press gear meshing will sound, if you change to use helical or herringbone gear transmission, you can basically eliminate this friction noise.
    5、Improve the mold structure
Instead of a flat die with a beveled die, the use of the bevel of the knife mouth, so that the gradual separation of the sheet, thus delaying the punching time, can play a certain noise reduction effect. Noise reduction and shear angle, the larger the shear angle, punching and cutting time increases, the noise level reduction also increases accordingly, for the relationship between the shear angle and the amount of noise reduction, the best shear angle of 8 ° ~ 10 ° is appropriate.
     6、Set up sound absorption and vibration damping device
The flywheel of the punch press and its transmission system plus cover closed up, can significantly reduce the noise of the transmission part. For high power, high noise motor should also be configured with local sound insulation cover or closed sound insulation cover. In the lower part of the press slider or mold outside the work area, the installation of movable protective fence or soundproof cover. If the mold is installed on the outside of the soundproof cover, cover the inner wall and then affixed with sound-absorbing materials, noise abatement effect is more obvious.

heat dissipation plate high-speed stamping machine