Options for Hydraulic Clamping Tools

Electronic Clamping Pressure Control

Electronic clamping pressure control of Königdorn® mandrels and chucks with König-mtm's pressure tester dms 1
Why electronic clamping pressure control?

The expansion of mandrels and chucks falls into a range of up to a maximum of 0.3 % of the clamping diameter. This fact leads to optimal clamping for every mandrel and chuck with a certain clamping pressure.

With manual clamping in particular, it is easily possible to select a clamping pressure which is too high or too low. Both possibilities have disadvantages.

If the clamping pressure is too low, the workpiece on the mandrel can shift radially or axially, resulting in the destruction of either the workpiece or the tool during the machining process.

If the clamping pressure is too high, sensitive workpieces can be deformed, i.e. workpieces can be stretched so that specified tolerances cannot be kept after machining has been completed.
  Layout and display of the Königdorn® clamping pressure control dms 1

Thus, without clamping pressure control, it cannot be assured that the same workpieces and the same machining process will result in the same quality of the finished product. In order to improve clamping pressure monitoring, the electronic clamping pressure control system was developed by mtm.

This system always guarantees the same clamping pressure in a Königdorn® mandrel or chuck.

In addition to these advantages, expensive tools or manufacturing devices are protected against damage.

If you have any questions regarding electronic clamping pressure control, do not hesitate to contact us. We will be glad to advise you.

The functions of the system
The Königdorn® mandrel is equipped with a pressure sensor. The pressure tester dms 1 is connected via dirt-insensitive magnetic contacts. If the clamping screw on the mandrel is manually actuated, the internal pressure of the mandrel can be read digitally on the tester. Thus, the clamping pressure can be controlled and reproduced at any time.

For automatic clamping, an upper and lower limit is determined in the control instrument. The device can be connected to the machine via a pressure-free outlet so that disturbances can be recognized immediately by the machine control system. The measured pressure is displayed from 0-1,000 bar.

Colour code

Blue/Light blue
Königdorn® tooling (sectioned)
Clamping areas of tooling
Workpiece (partially sectioned)
Base machine component