Main Data

• Description: Robot joint gear
• Gear type: Double enveloping worm gear(Globoidal worm gearing)
• GEARX No.: TPW1.5-20R
• Center distance: 1.5 inches
• Ratio: 20/1
• Starts of worm: 1
• Number of teeth of worm gear: 20
• Helical hand: Right
• Worm:
  • Material of worm: 42CrMo
  • Heat treatment: Through quenching and tempering, then nitriding
  • Tooth surface hardness: HV≥600
  • Tooth surface finish: Ground
  • Tip diameter: 0.87 inches
  • Reference diameter: 0.658 inches
  • Face width: 0.88 inches

• Worm gear
  
  • Material: ZQSn10-1
  • Tooth surface finish: Hobbing
  • Tip Diameter: 2.448 inches
  • Reference diameter: 2.342 inches
  • Face width: 0.4 inches

The Main Fabrication Procedure

• 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

• Worm gear
  • Centrifugal casting
  • IRough turning
  • Semi-finish turning
  • Hobbing
  • Facing up

Technical Documents

• Inspection certificate of material
• Heat treatment certificate
• Certificate of ultrasonic inspection
• 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)

Application

• Robot Joint
• Antenna device