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Axial Pitch of Helical Gear Formula:
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The Axial Pitch of a Helical Gear is defined as the axial advance of a helix or screw during one complete turn (360°). For a screw thread, it represents the axial travel for a single revolution.
The calculator uses the axial pitch formula:
Where:
Explanation: The formula calculates the axial pitch by dividing the circular pitch by the tangent of the helix angle, accounting for the helical nature of the gear teeth.
Details: Accurate axial pitch calculation is crucial for designing helical gears, determining proper meshing between gears, and ensuring smooth power transmission in mechanical systems.
Tips: Enter the pitch of helical gear in meters and the helix angle in degrees. Both values must be positive, and the helix angle should be between 0° and 90° (exclusive).
Q1: What is the difference between circular pitch and axial pitch?
A: Circular pitch is the distance between corresponding points on adjacent teeth measured on the pitch circle, while axial pitch is the distance between corresponding points on adjacent teeth measured parallel to the gear axis.
Q2: How does helix angle affect axial pitch?
A: As the helix angle increases, the axial pitch decreases for a given circular pitch, making the gear teeth more steeply angled along the axis.
Q3: What are typical values for helix angles in helical gears?
A: Helix angles typically range from 15° to 45°, with common values around 20°-30° for most industrial applications.
Q4: Can this formula be used for both right-hand and left-hand helical gears?
A: Yes, the formula applies to both right-hand and left-hand helical gears as it only depends on the magnitude of the helix angle.
Q5: What units should be used for input values?
A: Pitch should be entered in meters and helix angle in degrees. The calculator will automatically handle the conversion to radians for trigonometric calculations.