High precision linear stages offer minimised moving mass and higher bandwidth performance
Heason Technology has released a new, high throughput version of the ultra compact Mini-MAG linear motor driven positioning stage.
According to the company, the MMG-AL includes the primary design and dimensional characteristics of the range, but replaces the stainless steel base and top plate with a simplified high grade aluminium construction and an optional single phase linear motor. This combines for a minimised moving mass with higher bandwidth performance, with the added benefit of reduced stage and drive amplifier costs.
Four standard travel options from 25 to 150mm are available for the small footprint stage. This has a nominal width of 80mm and includes distribution partner Dovers' MAG moving magnet motor technology, designed to eliminate the need for moving motor cables. The durable side mounted tape style optical encoder is available in a choice of positional resolution from 0.1 to 0.005 microns.
The MMG-AL has less than two thirds of the total mass of its stainless steel counterpart and a nominal load capacity of 8kg. Higher load capacity is available on request. Heason claims the maximum velocity of 0.5 msec and acceleration to 2.2m/sec2 ensures the stage can meet the dynamic performance required for the most demanding high precision production systems.
According to the company, the stage is aimed at the high throughput imaging industries but is suitable for any precision positioning application where step and settle times and in-position stability are principal requirements. With a typical sustained throughput rate of up to 2000 moves per minute and position stability below 100nm, the low mass design also suits vertical applications for Z-plane focussing without the need for a counterbalance system.
