comparison of worm and spur gears

 Description:

• The AT 200unit is a complete test system with drive and brake unit and two different gears.
• Driving and braking power are calculated to determine the efficiencies.
• The components used are common in drive technology and therefore closely related to practice.
• A three-phase AC motor with variable speed via frequency converter serves as the drive unit.
• An electromagnetic brake is used as the brake unit.
• The constant braking effect can be very finely adjusted via the exciting current; it then serves as a tunable load.
• The properties of the magnetic particle brake can be investigated in an additional experiment.
• A two-stage spur gear and a worm gear are available to be studied.
• The characteristic properties of the gear are adapted to the performance of the motor.
• Flexible couplings connect the gear to the motor and the brake.
• Motor and brake are mounted on pendulum bearings in order to determine the torques.
• The torques are measured by spring balance and lever arms.
• The speed of the motor is detected contact-free by means of an inductive displacement sensor on the motor shaft.
• The speed is displayed digitally.
• The exciting current of the magnetic particle brake is used as a measure of the braking torque and is also displayed.

Technical details:

Specifications:

• determination of mechanical efficiency in gears
• investigation on worm gear and two-stage spur gear
• three-phase AC motor with variable speed via frequency converter
• magnetic particle brake with adjustable braking torque via exciting current
• inductive speed sensor on the motor
• display of speed and exciting current
• determination of torques on motor and brake via spring balance and lever arms

Technical Data:

• Three-phase AC motor with variable speed:
  • power output: 0,25Kw
  • speed: 0…3000min^-1
• Magnetic particle brake:
  • rated braking torque at exciting current 0…0,37A: 0…10Nm
• Two-stage spur gear:
  • transmission ratio: i=13,5
  • torque: 23,4Nm
• Worm gear:
  • transmission ratio: i=15
  • torque: 10Nm
  • worm: z=2
  • worm gear: z=40
• Measuring ranges:
  • speed: 0…3000min^-1
  • current: 0…0,37A
  • force: 0…100N
  • 230V, 50Hz, 1 phase
  • 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase
  • UL/CSA optional

Dimensions & Weight:

• L x W x H: 1060x600x420mm (experimental unit)
• Weight: approx. 35kg
• L x W x H: 420x450x180mm (display and control unit)
• Weight: approx. 5kg

Learning Objectives/Experiments:

• determination of the mechanical efficiency of gears by comparing the mechanical driving and braking power for:
• spur gear, two-stage
• worm gear
• plot the torque/current characteristic curve for a magnetic particle brake
• drive and control engineering

Scope of Delivery:

• 1 experimental unit
• 1 display and control unit
• 1 set of accessories
• 1 set of instructional material

Features:

• mechanical efficiency of gears
• three-phase AC motor as the drive and magnetic particle brake as the brake unit
• comparison of worm and spur gears

Accessories:

·         optional:

–      WP 300.09 Laboratory trolley

Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.