Main Data
- Description: 12 starts double enveloping worm gear set
- GEARX No.: TPW600-3.9167-12
- Center distance: 600 mm
- Ratio: 3.9167 (47/12)
- Starts of worm: 12
- Number of teeth of worm gear: 47
- Transverse module(Mt): 20 mm
- Pressure angle: 29.7°
- Helical angle: 43°
- Helical hand: Right
- Double enveloping worm
- Material of worm: 42CrMo
- Heat treatment: Through quenching and tempering, then nitriding.
- Tooth surface hardness: HV≥600
- Nitriding depth (CHD): 0.5 mm
- Tooth surface finish: Ground
- Tip diameter: 288 mm
- Reference diameter: 260 mm
- Face width: 220 mm
- Weight of gear blank: 850 kg
- Weight: 600 kg
- Double enveloping worm gear
- Material: ZCuAl10Ni6Fe5
- Tooth surface finish: Hobbing
- Tip Diameter: 968 mm
- Reference diameter: 940 mm
- Face width: 176 mm
- Weight of gear blank: 480 kg
- Weight: 300 kg
Application
The Main Fabrication Procedure
- Double enveloping worm
- Forging the gear blank
- Normalizing
- Rough turning
- Ultrasonic inspection
- Quenching and tempering
- Semi-finish turning
- Aging treatment
- Coarse grinding the external and ends
- Turning tooth threads
- Semi-finish grinding tooth
- Nitriding
- Finish grinding the external and ends
- Gear grinding
- Inspection magnetic inspection the tooth flank, and then magnet demagnetization
- Facing up
- Double enveloping worm gear
- Centrifugal casting
- Rough turning
- Semi-finish turning
- Hobbing
- Facing up
Technical Documents
- Inspection certificate of material
- Heat treatment certificate
- Certificate of ultrasonic inspection with grade II
- Magnetic particle detection certificate(on tooth flank)
- Size tolerance and geometric tolerance report
- Inspection report of tooth quality
Relative Standards
- GB/T16445-1996 Planar double-enveloping worm gear accuracy
- ANSI/AGMA 6035-A02 American National Standard Design, Rating and Application of Industrial Globoidal Wormgearing (Metric Edition)