Title: Z-axis drive assembly

Abstract: A Z-axis drive assembly for a turret machining center incorporates a variable speed DC motor mounted on a vertically adjustable carriage and connected through a harmonic drive unit to rotate a pinion. The pinion forms part of a rack and pinion mechanism, for controlling the vertical elevation of the rack relative to the carriage.

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Inventors: Frazierr, James L. (Los Alamitos, CA, US)

Application Number: 608899
Filing Date: 1975-08-29
Publication_date: 1976-08-17
Assignee: Houdaille Industries, Inc. (Buffalo, NY)
Primary Class(es): 408/35 29/46, 74/640, 408/135
Other Classes:
US Patent Ref:

2501177	Mar, 1950	Karweit	74/842.
2776584	Jan, 1957	Burg	408/35.
3091979	Jun, 1963	Schaeffer et al.	74/640.
3187862	Jun, 1965	Musser	74/640.
3822961	Jul, 1974	Lay	408/135.

Other Refs:
Primary Examiner: Simpson, Othell M.
Assistant Examiner: Silverberg, Fred A.
Attorney: Hill, Gross, Simpson, Van Santen, Steadman, Chiara & Simpson