Chaotic vibrations of the vibro-impact mechanism in a hand-held electro-pneumatic drill

A qualitative analysis of the model of the impact support mechanism, assuming two models of impact forces and a non-linear characteristic of the air pressure force has been presented in this paper. The ranges of parameters in which the system operates regularly have been estimated. It has also been found that in the case of parameter values outside the designated ranges, the movement may be chaotic. During such movement, undesirable collisions of certain structure elements often occur, which may lead to the destruction of some elements of the system.