Operating Manual
9
POWER CLAMP
English
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© 2021/09 Haimer POWER CLAMP
Device Description
2 Device Description
2.1 Function description
The POWER CLAMP shrink fit machine uses an induction coil, also called an inductor, as its function
principle. The coil creates a magnetic alternating field. If a metallic object with iron parts is located
inside the coil, it will be heated.
The frequency of the alternating field is set so that the metallic object, in the present case a shrink
fit chuck, is only heated on the surface. Heating of the shrink fit chuck is only continued with the
POWER-CLAMP until the tool can be inserted or removed by hand, which lasts approx. 5 seconds.
This happens before the tool itself can heat up. The shrink fit chuck is only hot locally at this point
and has not had enough time to heat through. This means that only a relatively small amount of
energy is supplied and used. It is therefore possible to keep the subsequent cooling down phase
very short.
Cooling is achieved by applying a cooling device with water cooling. The cooling is provided
by the SPEED COOLER. The cooling water circulates permanently through the cooling body. The
heated shrink fit chuck remains in its holder. The water-cooled cooling body is applied. The cool-
ing action is provided by direct contact with the shrink fit chuck. It is possible to touch the shrink fit
chuck again after a short time.
The procedure and the construction of the POWER-CLAMP shrink fit machine enable very quick tool
changing. This results in a long life for the shrink fit chuck, since it only becomes hot locally and must
therefore not be touched until it has cooled down again. This ensures simple and safe operation.
The POWER CLAMP versions of the shrink unit have a turntable which is designed to allow con-
tinuous exchange of tools.
2.2 Dynamic power controller
Depending on the local power supply, the voltage in the system is subject to considerable fluctu-
ation. This also has an affect on the heating capacity of conventional shrink fit units. If the voltage
is too low, the heating capacity may also be insufficient to quickly and effectively heat the chuck.
If the voltage is too high, there is a danger of the chuck overheating.
The dynamic power controller of the POWER-CLAMP solves this problem. The heating capacity is
detected and controlled throughout the shrink fit process.
This thus ensures that optimum working results are achieved under all operating conditions.
2.3 Coil technology
The induction coil is the heart of shrink fit systems. It must heat the shrink fit chuck quickly and yet
evenly and without damage for all dimensions.
The POWER CLAMP shrink fit units recognise automatically which coil is connected and adjust
themselves to it.
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