Tooth contact check

1 Gear pairs with parallel axis and crossed shafts

Ideal tooth contact

- 70%<95% of the facewidth for cylindrical gears - 40%<95% of the tooth depth for cylindrical gears - 50%<85% of the facewidth for bevel gears and worm and worm gear pairs - 40%<95% of the tooth depth for bevel gears and worm and worm gear pairs

– 70%<95% of the facewidth for cylindrical gears
– 40%<95% of the tooth depth for cylindrical gears
– 50%<85% of the facewidth for bevel gears and worm and worm gear pairs
– 40%<95% of the tooth depth for bevel gears and worm and worm gear pairs

Normal tooth contact for teeth with barreling

Normal tooth contact for teeth with barreling

Incorrect tooth contacts

Tooth contact at the tooth foot

Tooth contact at the tooth foot

Tooth contact at the tooth tip

Tooth contact at the tooth tip

Conical tooth contact

Conical tooth contact

Regressive tooth contact

Regressive tooth contact

Edge tooth contact

Edge tooth contact

Diagonal tooth contact

Diagonal tooth contact

Too thick tooth contact – Too thin tooth contact

Too thick tooth contact – Too thin tooth contact

Too large tooth contact – Too small tooth contact

Too large tooth contact – Too small tooth contact

Diagonal inside tooth contact - Diagonal outside tooth contact

Diagonal inside tooth contact – Diagonal outside tooth contact

Radial bridge-shaped tooth contact

Radial bridge-shaped tooth contact

Axial bridge-shaped tooth contact

Axial bridge-shaped tooth contact

2 Worm and worm gear pairs

Ideal tooth contacts

Tooth contact located at the contact start

Tooth contact located at the contact start

Tooth contact located at the contact end

Tooth contact located at the contact end

Tooth contact located in the middle

Tooth contact located in the middle

Tooth contact located at the tooth ends

Tooth contact located at the tooth ends

Wrong tooth contacts

Tooth contact due to axial error of the wheel relative to the worm

Tooth contact due to axial error of the wheel relative to the worm

Tooth contact due to the helix angle error

Tooth contact due to the helix angle error

Tooth contact due to centre distance error

Tooth contact due to centre distance error

3 Mounting of spiral bevel gears

On the left side are incorrect tooth contacts. These can be corrected by moving the pinion and gear in the direction as shown. The backlash must comply with the requirement of the drawing.

Montage regeling