Robotic Multi-Axis Positioning Systems

Fast Positioning in Space
Compared to the M-850 Hexapods, the M-840 is built for higher speeds with lower loads. Up to 10 kg in any orientation can be moved at with up to 50 mm/sec (600 mrad/sec) true path control. The control system automatically manages its path planning and the coordination of the six motors and minimizes runout and unwanted motion.

6-DOF Parallel Machines
The M-840 Hexapod consists of six struts which expand and contract between a bottom and a top platform. All motion in space of the top platform is achieved by changing the length of the individual struts with sub-micron resolution.

In contrast to conventional multi-axis positioning systems, where single-axis positioners are stacked upon each other, parallel kinematics systems such as the Hexapod do not exhibit error-summation. Single stage inaccuracies, moving cables of the upper stages, cosine errors due to stack height of the single positioners are all eliminated, and a repeatability in space of a few microns can be achieved. Another big advantage is that with PI Hexapods the center of rotation (pivot point) stays where programmed during all motion.

• Six Degrees of Freedom
• Fast Step-and-Settle
• No Moving Cables for Improved Reliability, Ease of Setup and Reduced Friction
• Load Capacity 10 kg
• Repeatability to 2 µm (Six-Axis Moves)
• Significantly Smaller and Stiffer Package than Conventional Multi-Axis Positioners
• Better Dynamics & Throughput
• True Path Control
• PivotAnywhere™ Virtualized Center of Rotation Set by Software
• User-Friendly Software and Control Electronics