MOTION SYSTEM APPLICATIONS
Belts and chains in
vertical arrangements BEMA Series synchronized XYZ gantries from IntelLIDrives use motorized belt mechanisms on their axes to deliver speeds to 2 m/sec — making the gantries suitable for high-speed positioning of medium payloads. Load capacity in X-Y is 30 kg; on the vertical axis it is 2 kg.
Vertical motion axes present potentially dangerous POWER TRANSMISSION-PART CONVEYING
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failsafe brakes, mechanical safety linkages, or some type of emergency-stop equipment. In addition, vertical arrangements subject their actuator elements to downward or liftoff loads as
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well as side loads and moments in pitch, roll, and yaw directions.
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So what options are suitable? Actuation based on motor-driven ballscrews and leadscrews works in many arrangements, though it’s not the leading choice for particularly tall installations. Here, trouble with backdriving, buckling, or keeping lubrication evenly distributed over the full stroke may indicate other motion technologies. Belt drives and chain drives are suited to the varied forces of working with and then against gravity — even while resolving other loads.
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situations to personnel and workpieces — so usually necessitate
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Vertical applications employing belt drives often include actuator assemblies complete with twin linear-bearing blocks and guide rails. Such bearings primarily address moment loading during deceleration and acceleration. Safety mechanisms can help keep the machine axis under control, even in the unlikely event of catastrophic actuator failure. For example, Macron Dynamics offers a timing-belt accessory system called the cam-lock arresting wedge system (CLAWS).
pyramidbelts.com 641.792.2405 • sales@pyramidbelts.com
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DESIGN WORLD — MOTION
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