Compact linear stage driven by three-phase linear motor

Posted By : Alice Matthews
Compact linear stage driven by three-phase linear motor


A large number of applications in automation technology require positioning systems that meet the high demands on precision and dynamics. At the same time, purchase costs often play a decisive role. PI (Physik Instrumente) has added the V-408 PIMag linear stage to its portfolio, which it claims to be the best solution for simple and price-sensitive automation tasks.

The compactly designed V-408 has a width of 80mm and height of 25mm, and is suitable for travel ranges to 25 or 50mm, and velocities to 1.5m/s and this allows high throughput rates. The minimum incremental motion is 20nm with a bidirectional repeatability of ±0.1µm. If required, it is also possible to combine the linear stages to multi-axis systems.

Three-phase linear motors are the driving force of the linear stages. The iron core maximises the magnetic forces in a small installation space und ensures high acceleration as well as the thermal stability of the drive. Crossed roller bearings with anticreep system guarantee high guiding accuracy and load capacity.

Position detection directly at the motion platform makes sure that positioning is not influenced by nonlinearity, mechanical play or elastic deformation.

The linear axes are controlled by the PI C-891 controller or – in the case of multi-axis applications – by an industrial controller from ASC, who PI took over in 2017.

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