A dual-lead worm gear set is frequently used for machines to operate without backlash, which can be adjusted along the worm’s axial direction. The ZK-type dual-lead worm is generated by a cone-type straight-edged grinding wheel while an oversize worm-type hob cutter cuts the worm gear. The dual-lead worm gear set has two different axial modules and helix angles for the right- and left-side tooth surfaces. The mathematical model involving ZK-type dual-lead worm and worm gear surface geometries is developed based on the theory of gearing and gear cutting mechanism. According to the proposed mathematical model, computer graphs of the ZK-type dual-lead worm gear drives have been presented. Coordinates of the meshed grid-point on gear drive surfaces can thus be determined by applying the numerical method. Undercutting of the worm gear surface has been investigated based on the theory of gearing and the developed gear set mathematical model. The gear set mathematical model developed herein can facilitate gear set tooth contact analysis, contact teeth, contact ratio and other advanced investigations.
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September 1998
Research Papers
ZK-Type Dual-Lead Worm and Worm Gear Drives: Geometry
B.-W. Bair,
B.-W. Bair
National Chiao Tung University, Department of Mechanical Engineering, Hsinchu, Taiwan 30050, R.O.C
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C.-B. Tsay
C.-B. Tsay
National Chiao Tung University, Department of Mechanical Engineering, Hsinchu, Taiwan 30050, R.O.C
Search for other works by this author on:
B.-W. Bair
National Chiao Tung University, Department of Mechanical Engineering, Hsinchu, Taiwan 30050, R.O.C
C.-B. Tsay
National Chiao Tung University, Department of Mechanical Engineering, Hsinchu, Taiwan 30050, R.O.C
J. Mech. Des. Sep 1998, 120(3): 414-421 (8 pages)
Published Online: September 1, 1998
Article history
Received:
August 1, 1997
Revised:
May 1, 1998
Online:
December 11, 2007
Citation
Bair, B., and Tsay, C. (September 1, 1998). "ZK-Type Dual-Lead Worm and Worm Gear Drives: Geometry." ASME. J. Mech. Des. September 1998; 120(3): 414–421. https://doi.org/10.1115/1.2829168
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