Ergonomics - Atlas Copco

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SHoCK reaCtion
These tools do not give any shock reaction.
ViBration
There are at least three sources of vibra-
tion in a percussive tool: the oscillating
force that drives the piston, the shock wave
transmitted to the machine from the chisel,
and the vibration of the workpiece trans-
mitted back to the machine. These sources
can be counteracted at the design stage
as described in the chapter Evaluation of
Power Tools: Vibration.
noiSe
The basic principle of percussive tools is to
create a shock wave that travels down the
chisel or die to strike the casting or rivet with
enough force to cause plastic deformation. The
shock wave has a duration of less than 100 µs.
This process involves very high frequencies
and when these hit a structure many natural
frequencies are excited, emitting broad band
noise. High forces give high noise levels.
DUSt anD oil
Chipping and rust cleaning can create a
lot of dust. In other words, the operator’s
exposure to dust depends very much on the
type of work in progress. The machine can
be equipped with a dust collector connected
to a spot-suction system.
Percussive tools require very little lubri-
cation since the piston moves back and forth
in a very smooth cylinder without gener-
ating heat. Only a minimal amount of oil
leaves the tool with the exhaust air.