M-840 | HEXALIGHT Fast Six-Axis Parallel Kinematics Robot (Hexapod) |
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- 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
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| The M-840 HEXALIGHT robot is based on PI's experience in high-resolution parallel kinematic machines (PKM) over more than a decade. PI Hexapods were originally used in astronomical telescopes for mirror and antenna adjustments over wide ranges in small step sizes. The M-840 provides six degrees of freedom with 3 µm minimum incremental motion (combined 6-axis move, design-resolution of individual struts is 0.016 µm for the M-850.5DG) and allows the user to define the center of rotation (pivot point) anywhere inside or outside the system. The M-840 Hexapod is of great value for any complex, high-accuracy positioning and alignment task where independent motion in six degrees of freedom is required.
Fast Positioning in Space Compared to the M-850 Hexapods (see link) 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.
PivotAnywhere™Virtualized Rotation Capability Hexapod motion is not determined by fixed bearings, but rather by sophisticated real-time 6-space control algorithms. For positioning tasks such as alignments, it is important to define a certain point in space as the center of rotation. This point can be chosen freely with a single software command.
Easy Programming Logical Axes and Open Interface Control of the M-840 is facilitated by the controller's open interface architecture which provides a variety of high-level commands for minimized communication. The user-friendly software and command structure allows direct six-axis positioning by entering Cartesian coordinates X, Y, Z and qX, qY, qZ.
Automated Optical Alignment The M-840 can be upgraded with an integrated photometer card (infrared or visible light) for optical alignment and built-in automatic alignment procedures, similar to the compact F-206 HexAlign™ photonics alignment robot (option F-206.IRU or F-206.00U, see link). The F-361 high-speed, absolute measuring photometer (see link) can also be used with the M-840.
|  | - Micromachining
- Micromanipulation
- Life Sciences
- X-ray Diffraction Measurements
- Semiconductor Handling Systems
- Tool Control for Precision Machining & Manufacturing
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 M-840 HEXALIGHT 6D micropositioner
 Hexapod digital motion controller. Display and keyboard are optional.
 M-840 dimensions in mm.
 The travel ranges of the individual coordinates (X, Y, Z, uX, uY, uZ) are interdependent. Resulting working space of the M-840 in X, Y, Z for qX= qY= qZ= 5°.
 Optical device scan with M-840.5PD and F-206.IRU optical power meter.
 F-361 high-speed optical power meter
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