design and principle of gear drive
| Code | TM123 |
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.
