Home
Back
Formula Used:
| From: | To: |
The Transverse Module of a Helical Gear is the module measured in the plane of rotation. It represents the size of the gear teeth in the transverse plane, which is perpendicular to the gear axis.
The calculator uses the formula:
Where:
Explanation: The transverse module is calculated by dividing the normal module by the cosine of the helix angle, accounting for the helical nature of the gear teeth.
Details: Accurate calculation of transverse module is crucial for proper gear design, ensuring correct tooth dimensions, proper meshing with mating gears, and optimal power transmission in helical gear systems.
Tips: Enter normal module in meters and helix angle in radians. Both values must be positive (normal module > 0, helix angle between 0-90 degrees in radians).
Q1: What is the difference between normal module and transverse module?
A: Normal module is measured perpendicular to the tooth flank, while transverse module is measured in the plane of rotation perpendicular to the gear axis.
Q2: Why is the cosine function used in this calculation?
A: The cosine function accounts for the angular relationship between the normal plane and transverse plane due to the helix angle.
Q3: What are typical values for helix angle in helical gears?
A: Helix angles typically range from 15° to 45° (approximately 0.26 to 0.79 radians), with 20°-30° being most common.
Q4: How does helix angle affect gear performance?
A: Higher helix angles provide smoother and quieter operation but increase axial thrust, while lower angles reduce thrust but may increase noise.
Q5: Can this calculator be used for both internal and external helical gears?
A: Yes, the formula applies to both internal and external helical gears as it deals with the fundamental geometric relationship between normal and transverse modules.