FOUR BAR LINK MECHANISM

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The apparatus consists of following :

These are mounted on a well polished wooden board angular & Linear scales are  provided to find  the displacement of points in the links.

  1. Locomotive Coupling Rod Mechanism.
  2. Ackerman Steering Gear Mechanism.

MACHINE TOOLS DYNAMOMETERS

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MILLING TOOL DYNAMOMETER    

This is simple & easy to understand. With this unit students can evaluate cutting forces for varying cutting depth, speed & feed. The unit works on standard method of Octogonal ring with strain gauge
s. It is in two parts one mechanical set up consisting a set of octaogonal rings sandwiched between two M. S. plates with strain gauges fixed on it. This set of octagonal rings transmits the relevant data to the force indicator during milling operation.

  1. 3 ½ digit display unit
  2. Range 500 Kg force in XYZ direction
  3. List of standard accessories included in the basic cost of equipment.

    Features :

  1. Rigid in construction
  2. Compact digital force indicator Use of cutting fluid during operation.  

VIBRATION MEASUREMENT

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Vibration Measurement by using Vibrometer

Technical Data:

Acceleration Measuring RANGE : 0.1 to 200 m/s2 True RMS , Peak
Velocity Measuring Range :0.1 to 200 mm/S True RMS, Peak
Frequency Range : 10 to 1000HZ
Resolution : 0.1 mm/s
Accuracy : + or – ( 2% + 0.1 mm/s)
Power Supply : 9V 6F22
Display : LCD
Back Light : Yes
Auto Off : Yes
Batter Low Indication : Yes
Weight : 200gms
Vibration Transducer : Piezo electric type Accelerometer

UNIVERSAL GOVERNOR APPARATUS

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The drive consist of small D. C. motor mounted vertically on a rigid base plate. The governor spindle should have supported vertically on same base plate with ball bearings, so it is free to rotate. This spindle is driven by motor with belt and pulley system. The optional governor mechanisms can be mounted on spindle. Precise speed control is afforded by the speed control unit and extension to the spindle shaft allows the use of a hand tachometer (Not in scope of supply) to determine the speed. A graduated scale is fixed to the sleeve and guided in vertical direction. The center sleeve of the porter and proell governors incorporates a weight sleeve to which weight may be added. The hartnell governor provides means of varying spring rate and initial compression level. This enables the hartnel governor. To be operated as a stable or unstable governor

TECHNICAL SPECIFICATION

  1. Drive unit D. C. motor ¼ H.P. RPM /180 V. D. C.
  2. Speed control unit working on single phase AC 230 supply with 0 200 VDC
  3. Belt on pulley systems to give spindle speed 100 to 500 RPM
  4. Governor mechanisms with necessary spring and weights as below
  • Watt
  • Porter
  • Hartnell
  • Proell

EXPERIMENTS TO PERFORM

For all type of governor

  • Determination of characteristic curve of sleeve position against speed of rotation
  • Derivation of the actual controlling force curves from the above characteristic and comparison with theoretically predicted controlling force curves.

Porter and proell governors

  • The effect of varying the mass of the center sleeve.

Hartnell governor

  • The effect of initial spring compression

MANUAL

A detailed instruction and operation manual is to be provided along with the equipment.