Forging and stamping production is the basis of the procurement base of mechanical engineering. A variety of forging and pressing equipment ensures the production of most of the stampings and forgings used at the blank production stage. Working conditions in the forging shops are traditionally far from perfect. The main reasons for this are the number of unfavorable factors present in the forging shops, the main ones being noise and vibration, which most negatively affect the maintenance personnel.
The article focuses its main attention on the evaluation of the vibrational activity of forging and pressing machines. It is indicated that vibration-isolating installations for stamping and forging hammers were developed. There are no such installations for pneumatic forging hammers.
The results are given concerning the study on the design of a vibration-isolating installation for pneumatic forging hammers as a type of vibration-active equipment. To reduce the vertical vibrations of this equipment, multi-leaf springs are used, which efficiently reduce vibrations and have a long service life. Performance of the vibration isolating structure is ensured by installing a hammer on an intermediate frame supported by the springs installed in the foundation pit. The frame eliminates the rocking of the hammer and provides a uniform load on the spring.
Parametric analysis of the vibration isolation unit showed that when the stiffness of the shock absorbers used is changed, the vibration activity of the machine can be reduced. A vibration-isolating installation for a forging pneumatic hammer, designed to improve the working conditions of personnel, was developed and successfully tested in production. Thanks to this installation, the vibration activity of the machine was significantly reduced and brought into line with sanitary standards, which improved the working conditions of the blacksmith and his assistant. Efficiency of vibration isolation is not changing in all modes of the hammer operation. The developed design is recommended for wide implementation in forging shops to improve the vibration characteristics of the hammer and to provide the possibility of placing such machines near vibration-sensitive objects.
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