design and principle of gear drive

 Description:

• Gears and gear drives are machine elements that are classified as transmission or conversion elements.
• Gears transfer the rotational motion from one shaft to another by means of a positive connection.
• In a spur gear, the gears are arranged on parallel axles.
• This type of gear is characterised by its relatively simple construction, since only a few moving parts are used and the external teeth gears are simple to manufacture.
• Spur gears are robust and highly efficient because of their direct, purely mechanical transmission.
• The TM 123experimental unit illustrates the relationship between the ratio of the number of teeth and the transmission ratio of gears.
• Simple experiments are used to study the torque conversion in gear pairs and the efficiency of a gear.
• The forces are generated by weights and can be varied quickly and easily. 

Technical details:

Specifications:

• function and design of gear drives
• 4 galvanised steel gear wheels
• 2 anodised aluminium pulleys
• ball-bearing-mounted gears and pulleys
• anodised aluminium base plate

Technical Data:

• 4 gear wheels:
  • 2x Ø=126mm, 84 teeth
  • 2x Ø=42mm, 28 teeth
  • module: m=2mm
• Pulleys effective radius: 35mm
• Weights:
  • 2x 1N (hanger)
  • 2x 0,25N
  • 1x 0,5N
  • 2x 1N
  • 2x 2N
  • 2x 2,5N

Dimensions & Weight:

• L x W x H: 350x150x100mm
• Weight: approx. 6kg

Learning Objectives/Experiments:

• development of the main variables and relationships in a straight-toothed spur gear:
  • velocity ratios in spur gears
  • gear with intermediate wheel or two-stage gear
  • influence of gear ratio on friction
  • determine the efficiency

Scope of Delivery:

• 1 experimental unit
• 4 gear wheels
• 2 pulleys
• 1 set of weights
• 1 set of instructional material

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