![]() Exact center distance measurement is always required for correct 3d modeling of Globoid gear tooth. ![]() The nature of Globoid tooth contact does not tolerate shaft misalignment. Globoid disadvantage is higher cost of enveloping pinion and strict requirements for accurate shaft positioning. Globoid (or Double Enveloping Worm or Hour Glass) gear has advantage versus a traditional worm gear because of 6-10% higher driving efficiency and about 30% more torque capacity. Driving efficiency of Globoid design was 0.75 vs 0.68 for a traditional worm gear. The gear has metal hob with plastic over mold around it. The first two images are generated in 1998. ![]() We pioneered 3d CAD gear tooth modeling in design of Electric Power Steering for General Motors in 1998. Globoid tooth surface generating software.ģd Globoid CAD models and software provided by: ![]() Globoid gear 3d models and software for 5-axis machining. ![]()
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