November 19, 2018 – Optimal Engineering Systems, Inc. (OES) has released a series of X-axis stages with integral Rotary Positioning Stages.
The four X-and-Theta stages in this series feature linear travels of: 15 mm (0.591 in.), 30 mm (1.181 in.), 50 mm (1.968 in.) and 75 mm (2.953 in.), and the rotary table, capable of continuous 360 O rotation in either direction, measures 100 mm (3.937 in.) in diameter.
A 60 mm (2.362 in.) diameter version is also available. These X-and-Theta stages are designed for applications such as: Angular glass cutting and grinding, wafer alignment, semiconductor handling, laser cutting, drilling, machining, scanning, inspection, assembly, and testing.
The X-axis stages move on crossed roller bearings and are driven by a 1 mm per turn precision ground lead screw at speeds up to 5 mm/sec. Featuring 3 micron repeatability, the linear resolution of the X-axis stages are 0.5 microns (10 Micro-steps per Step Motor Driver in use) and 0.25 microns (20 Micro-steps per Step Motor Driver in use) with positional accuracy is 10 microns.
The 100 mm diameter theta stage is driven by a 180:1 ratio worm gear. Resolution of the theta stage is 0.001 O (10 Micro-steps per Step motor driver in use).
Repeatability is 0.005 O , positional accuracy is 0.01 O and backlash is 0.005 O . A precise pattern of threaded holes in the table enable installation of tooling.
Two-phase stepper motors are standard. A knob for manual adjustments on each the stepper motors can be replaced with an incremental encoder for position verification or a servo motor. These black anodized aluminum X-and-theta stages can integrate into new or existing systems. Compatible motion controllers are available from OES and the X-plus-theta stages can also be ordered as complete plug-and-play systems.
