Miniature linear motor stage

Miniaturisation of fibre optics, photonics, electronics and biomedical processes has driven the need for smaller and more efficient positioners. Parker's MX80 Micro Stage, claimed to be the smallest linear servomotor-driven positioner in the industry, is loaded with high-performance features for both rapid linear translation and precise positioning of smaller loads in small work enveloped.

The MX80 is small in size and weight. All key components are built in, residing within the body of the stage to provide a clean looking, reliable, unobstructed package. At the heart of the MX80 is an innovative, non-contact linear servo motor. This direct-drive motor has been optimised for force, speed and acceleration, to deliver performance and response. A high precision non-contact linear encoder provides sub-micron resolution, repeatability and accuracy. Selectable resolutions range from 20 nm to 5 µm. Precision ground crossed roller bearing sets with a zero cage creep feature provide smooth, precise linear translation. Optical travel limit and home sensors are designed into the unit for easy adjustment over the entire travel of the stage. Although there are no moving cables, a metre of hi-flex cabling is included and wired directly into the units.

The MX80 is available in four travel lengths (25, 50, 100, 150 mm), and two performance grades: precision and standard. All units include convenient tooling features. Two dowel pin holes are provided for work piece removal and realignment, and a master reference surface allows fixtures or other tooling elements to be precisely aligned with the travel axis.