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Apps – Printing Presses

Strain Wave Gearing is unsurpassed in performance and flexibility in applications requiring controlled variable speed and phasing of rotating shafts, and its compact size makes for effective stream-lining of these operations.

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In multiple-color offset rotary printing presses, synchronized rotating rollers apply ink of various colors to designated patterns. If any roller moves out of alignment, causing color overlap or misprinting, the adjustment mechanism incorporating a Strain Wave Gearing differential unit will correct alignment without necessitating a shut-down of the press. In a typical example illustrated here, during normal operation the ink rollers are driven by the primary motor alone, with the trim input rotationally locked. When misalignment occurs, the trim motor intervenes to minutely increase or decrease the speed of the roller until angular phase adjustment is achieved.

When applied in differential drives for web tensioning, shaft phasing, roll registration, and other applications requiring controlled variable speed and phasing of rotating shafts, Strain Wave Gearing differential gearing represents exceptional performance and design flexibility unsurpassed by conventional differential mechanisms. The compact differential units developed specially for providing precise and minute adjustments enable the effective streamlining of the entire system, with a significant cost-saving advantage.