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The Theory and Practice of Worm Gear Drives
Worm gears are special gears that resemble screws, and can be used to drive other gears. Worm gears, enable two non-touching shafts in a machine to mesh (join) together.
This publication, unique in that it combines both theoretical and practical design aspects, including the latest results of research and development, provides detailed treatment of the theory and production of worm drives, as well as the overarching subject of production geometry of helicoidal surfaces.
Included are mathematical models for a number of practical applications; a description of dressing equipment required; treatment of inspection and measurement; the use of intelligent systems; worm gearing for power transmission; selection criteria.
1.Introduction; history of worm driving: list of symbols 2.Literature review; 3.Production geometry of helicoidal surfaces having constant pitch; Production development of worm gears having arched profile: General kinematic and mathematical model and examination of production geometry of helicoid surfaces having constant pitch: Geometrical analysis of hobs used for manufacture of ring gears mating with cylindrical or conical worms. 4.General form of mathematical modelling required. 5.Grinding wheel dressing required; Equipment based on mechanical principle: General CNC operated equipment. 6.Inspection and measurement 7. Production of helicoid surfaces in intelligent systems; Production of helicoid surfaces: Intelligent automation design and production of worm gears: Measurement and inspection: Universal thread grinding machine. 8.Main featutures of worm gearing for powertransmission; Examination of mating in driving pairs: Main industrial features: Noise level in power transmission 9. Selection of appropriate worm gearing