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 Products:  Engineering Mechanics and Machine Elements » Fundamentals of Engineering Design » Gears and Drive System Studies » GL 112
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GL 112: Cam Analysis Apparatus

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Cam Analysis Apparatus

Cam Analysis Apparatus

Product Details


Technical Description 
 
The GL 112 allows the dynamic investigation of cam mechanisms, as used in motors for actuation of the valves. The cam mechanism consists of 4 interchangeable cam plates and 2 different tracers. A mass and a spring are used to simulate the valve. In order to demonstrate the so-called "valve wobble", the spring rate, mass and speed are adjustable within broad limits. A plotter allows the actual lift curves to be recorded. The open design allows the observation of every detail of the movement process. A stroboscope (not supplied) can be used to provide a particularly impressive view of the movement process and lift. The unit is intended for demonstration purposes in technical education. It is not suitable for use as a test stand for fatigue testing.  
 
Learning Objectives / Experiments

- Comparison of different cam forms
- Lift curves for non-matching tracer
- Lift curve for skipping tracer
- Determination of limit speed and comparison with
  theory
- Influence of moving mass
- Influence of restoring spring rigidity
 
Features
 
* 4 different cams, 2 different tracers1
* Influence of spring rigidity and moving mass1
* Plotting of lift curves1
* Excellent observation of movement process

Specification

[1] Benchtop unit for investigation of cam mechanisms
[2] 4 cams: tangent, hollow cam, 2 circular cams with different head radius
[3] Tappet with 2 different tracers: flat or roller tappet
[4] 3 interchangeable restoring springs
[5] Electric motor with speed control
[6] Moving mass with can be lifted with 5 additional weights; attached to tappet
[7] Mechanical drum plotter with plotting spring and coated paper
[8] 230V, 50/60Hz, 1 phase or 120V, 50/60Hz, 1 ph.

Technical Data
Three-phase asynchronous motor with frequency converter
- power: 250W
- speed: 60…670rpm
Cams
- 15mm lift
- opening angle: 140°
Spring rigidity
- hard: 5026N/m
- medium: 2601N/m
- soft: 613N/m
Masses
- additional weight: 200g
- tappet: 530g
- flat tappet: 93g
- roller: 20g
Plotter: synchronous belt drive
Optical speed sensor

Dimensions and Weight
l x w x h : 800 x 435 x 440 mm
Weight : approx. 50 kg

Connections
230V, 50/60Hz, 1 phase or 120V, 50/60Hz, 1 phase

Scope of Delivery
1 unit
4 cams
2 tracer
3 restoring springs
3 blocks of plotter paper
1 combination wrench
1 hexagon screwdriver, short
1 instruction manual
 
Order Details
030.11200  GL 112  Cam Analysis Apparatus

Alternative products
 
GL 110 -- Cam Mechanism

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
E-Mail:
info@selkagmbh.com   |  Internet: http://www.selkagmbh.com

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