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Axis accuracy of ±1µm: essential for automatic bond testing

Axis accuracy of ±1µm: essential for automatic bond testing

Direct drive motor linear encoder

Although a well-established technology the majority of bond tests are deficient. The reason stems from the evolution of a manual machine into an automatic one. In a manual tester the operator aligns the test tool to the bond. This requires fine control of small movements but not ultimate accuracy.

Linear encoders

Many of these systems rely on rotary encoders fixed to their drive motors. This does an adequate job of positioning the motor but backlash and hysteresis in gearboxes, lead screws and linear guides induce very significant errors. Errors of ±50µm are common. The xyztec Sigma platforms all use linear encoders and have a positioning accuracy of ±1µm.

 

It works on your sample too!

If you are interested in a live demonstration of the Sigma on your sample or perhaps for more bond testing inspiration, contact us today! Click here to watch our automation video or here to watch the video of the contactless cavity cleaner.

Direct drive motor linear encoder

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Tom Haley


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