Machine components such as bearings, encoders and drive mechanisms are engineered and assembled directly on the granite base and bridge structures in an Integrated Granite Motion (IGM) system, unlike traditional stage-on-granite systems where discrete positioning stages and components are used in the system design. Systems can have higher stiffness than a stage-on-granite product because they have fewer parts in the structural loop, resulting in higher accuracy and better dynamic performance. Systems are custom-engineered to fit the user’s specific needs and can be designed with mechanical or air bearings, ball-screw or linear-motor drives, and a variety of feedback elements ranging from encoders to laser interferometers. Additional axes of motion, such as rotary, lift, or piezo stages, or even galvanometer scanners, can be integrated onto the axes, all of which can be controlled from the company’s A3200 unified control platform.
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