Input Parameters
Teeth type - common or spiral
Bases for Calculation ZAR3+ calculates all dimensions of cylindrical worm gear pairs with ZI, ZA, ZK, ZN or ZH worms, as well as efficiency, tooth forces and the safety margins against root fatigue fracture and pitting. Worm and WormGear Design Equations and Calculator. Related Resources: gears. The axialpitch of the worm is equal to the circular pitch of the gear in the central plane; and 3) Only one set of change gears or one master lead cam is required for a given lead, regardless oflead angle, on commonly-used worm-producing equipment. This paper presents a physically grounded calculation method to determine the efficiency of worm gear drives. This computation is based on the Institute of Machine Elements, Gears, and Transmissions (MEGT) tribological simulation, which can determine the local tooth friction coefficients (Ref.
Gear ratio and tooth numbers
Pressure angle (the angle of tool profile) α
Module m (With ANSI - English units, enter tooth pitch p = π m)
Unit addendum ha*
Unit clearance c*
Unit dedendum fillet rf*
Face widths b1, b2
Unit worm gear correction x
Worm size can be specified using the:
Calculated parameters
Common gearing ZN
Spiral gearing ZA
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Normal tooth pitch
Axial tooth pitch
Basic tooth pitch
Lead
Virtual/alternate number of teeth
Helix angle at basic cylinder
Worm pitch cylinder diameter
Worm gear pitch circle diameter
Worm outside cylinder diameter
Worm gear outside circle diameter
Worm root cylinder diameter
Worm gear root circle diameter
Worm rolling(work) circle diameter
Worm gear rolling(work) circle diameter
Worm gear root circle diameter
Center distance
Chamfer angle of worm gear rim
Worm tooth thickness in normal plane
Worm gear tooth thickness in normal plane
Worm tooth thickness in axis plane
Worm gear tooth thickness in axis plane
Work face width
Contact ratio
εγ = εα + εβ
where:
Minimum worm gear tooth correction
where:
Teeth type - common or spiral
Gear ratio and tooth numbers
Pressure angle (the angle of tool profile) α
Module m (With ANSI - English units, enter tooth pitch p = π m)
Unit addendum ha*
Unit clearance c*
Unit dedendum fillet rf*
Face widths b1, b2
Unit worm gear correction x
Worm size can be specified using the:
Calculated parameters
Common gearing ZN
Spiral gearing ZA
Normal tooth pitch
Axial tooth pitch
Basic tooth pitch
Lead
Virtual/alternate number of teeth
Helix angle at basic cylinder
Worm pitch cylinder diameter
Worm gear pitch circle diameter
Worm outside cylinder diameter
Worm gear outside circle diameter
Worm root cylinder diameter
Worm gear root circle diameter
Free Worm Gear Calculator For Kids
Worm rolling(work) circle diameter
Worm gear rolling(work) circle diameter
Worm gear root circle diameter
Center distance
Chamfer angle of worm gear rim
Worm tooth thickness in normal plane
Worm gear tooth thickness in normal plane
Worm tooth thickness in axis plane
Worm gear tooth thickness in axis plane
Work face width
Contact ratio
εγ = εα + εβ
where:
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Minimum worm gear tooth correction
Worm Gear Calculator Free
where:
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