COUPLINGS
Coupling types complementing servo applications COUPLINGS
for servo applications usually connect precision drives to sensitive loads, so they cannot induce any error. That’s why servocouplings should be zero backlash — to prevent issues with timing and predictability (not to mention failures due to hammering on reversing axes). Couplings for servo applications must also have high torsional stiffness while imparting slight forgiveness of misalignment (within specifications) of rotating shafts, even while holding transmitted rpm steady to motor output rpm. But these are just a few servocoupling considerations. Consider a typical application for servocouplings — to connect a servomotor to a ballscrew. Here, couplings with low inertia let the axis deliver faster acceleration and deceleration without unnecessarily degrading overall system efficiency. In fact, couplings for servo designs must often compensate for subtle power-transmission issues to minimize errors down to 1 arc-min. or lower. That’s especially true where servo systems take the form of exacting positioning axes. motioncontroltips.com | designworldonline.com
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DESIGN WORLD — MOTION
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