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  • Direct Drive (DDR) Rotary Table Construction
    the motor is a kit and meant to be part of the machine structure. Torque motors are designed as direct drives. They eliminate the need for gearboxes, worm-gear drives, and other mechanical transmission elements and directly couple the payload to the drive. This makes rotary drives with high dynamic
  • Direct drive leaves gears behind
    , medical diagnostics, imaging, test, and inspection require rotary motion to move lightweight parts. The traditional solution was a mechanical rotary stage, but more of these applications are giving way to direct-drive rotary motion. A direct-drive system improves accuracy and reliability
  • How to Select and Install Air Bearing Stages (.pdf)
    . In many cases, the best choice is a linear or. rotary stage that uses an air bearing for guidance, coupled to a. direct-drive motor, high-resolution position encoder, and digital. control system to create a complete motion subsystem. This. article will review the fundamental operation of air bearings
  • Medical Device Link .
    machines are built from general purpose, "catalogue type " motion components. Current state of the art in these machines consists of a direct drive linear stage with a linear motor and a direct drive rotary stage. Additional material handling components such as collets and grippers are also used
  • Motion Reference Guide: Software Keeps Linear-Stage Integration Straight
    , performed detailed calculations, and allowed for linear-feedback devices and forces from magnetic attraction when using direct-drive linear motors. * Integrated linear actuators combine all aspects of linear motion in a single piece of hardware. * Software selects type of linear actuator based
  • Medical Device Link .
    collets to prevent crimping damage. The catheter is rotated by a single or pair of direct-drive rotary stages (not belt-driven stages, which can often slip and cause positioning errors). The direct-drive mechanism is mounted on an x-y stage with high-speed linear encoders with accuracy of +-1 um
  • Kimco Application Guide for Voice Coil Actuators (.pdf)
    Voice Coil (VC) Actuators are direct-drive, hysteresis-free devices used for providing highly accurate linear or rotary motion. By virtue of their high acceleration and the absence of commuta-. tion, voice coil actuators offer numerous advantages in such applications as medical, semiconductor
  • Applications Dictate Gimbal Selection (.pdf)
    choice. In other applications,. resolver, rotary encoder),. two or more competing technologies. require ultra-high-precision. and drive mechanism. may deserve consideration. The choice. positioning, fast slew rates,. (ball screw, lead screw,. between direct-drive and gear-driven. direct-drive motor

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