Magnetic Measurement Solutions for Machine Tools – The machine tool industry is using magnetic measurement solutions for many applications. Positioning of stages, motion control of linear or rotary drives, spindle control to name a few. The harsh environment of machine tools is well suited for magnetic measurement. Applications include wood processing and sheet metal working machines, but also turning, milling and grinding machines.

Customer case

Together with a major electronics company, HSMAG 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.

Magnetic Measurement Solutions for Machine Tools

Magnetic Measurement Solutions for Machine Tools

The goal was to 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 magnetized layer is vulcanized. 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 benefits

Low noise emission and heat build-up
No phase errors through current spikes
High system precision
Low system costs through reduced cooling expenditures
Products for Machine Tool Solutions

Linear Measurement

HSMAG products support customers with diverse solutions for distance measurement, both incremental and absolute.

Linear measurements requires two components:

Linear scales
Linear sensing heads
HSMAG develops and produces both absolute and incremental linear measurement solutions. In the combination of an indivdual measuring head and task-specific scale  a customer specific solution can be created.

Rotary Measurement

HSMAG products support customers with diverse solutions for rotary measurement, both incremental and absolute. Rotary solutions are used for continuous or discrete positioning, motion control, such as commutaton, and many other solutions.

Rotary sensing heads

HSMAG offers a wide range of linear sensing heads. HSMAG can adapt these sensing heads for different applicaions.

Find more information about

incremental measuring heads or absolute measuring heads.
Rotary scales

Using a flexible manufacturing process HSMAG offers scales for arbitrary lengths with different pole lengths. HSMAG uses different accuracy classes for rotary scales

G006 +/- 6 arc seconds maximum deviation of a pole boundary of the ideal position
G010 +/- 10 arc seconds maximum deviation of a pole boundary of the ideal position
G060 +/- 60 arc seconds maximum deviation of a pole boundary of the ideal position
G100 +/- 100 arc seconds maximum deviation of a pole boundary of the ideal position
G600 +/- 600 arc seconds maximum deviation of a pole boundary of the ideal position
HSMAG produces rotary magnetic scales with one or more tracks. A reference point or index can be written in the second track, which is used as the zero point for the control.

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