Engineering

 

Together with a major German electronics company, Bogen has developed a complete series of magnetic generators for the rotation speed measurement of motor spindles in machines tools for the area of high speed material processing.
The goal was avoid the disadvantages of the currently utilised passive system of the gearwheel solution with respect to the noise emissions and heat build-up as well as the occurrence of phase errors through eddy current by introducing an active magnetic rotary sensor. At the same time, the engine speed strength was not to be influenced and the precision of the rotation speed measurement was to be further improved.

 

The high customer demands for the separation precision of up to 10 arc seconds was made possible through a new procedure of magnetic error compensation. This mechanical solution was made possible through a high-precision steel wheel upon which a magnetised layer is vulcanised. This allows for the desired rotation of up to 60000 U/min. The material, which has already been tested in the automobile industry, is optimal for harsh environmental conditions in machine tools such as oil and lubricants, as well as temperatures up to 150°C.

 

Customer advantages:

Low noise emission and heat build-up

No phase errors through eddy currents

High system precision

Low system costs through reduced cooling expenditures