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Mechanical - Metrology and Measurements - Linear and Angular Measurements

Uses of Angle Dekkor

   Posted On :  23.09.2016 01:56 pm

(i) Measuring angle of a component (ii) Checking the slope angle of a V-block (iii) To measure the angle of cone or Taper gauge

Uses of Angle Dekkor

 

 

(i) Measuring angle of a component

 

 

 

Angle dekkor is capable of measuring small variations in angular setting i.e. determining angular tilt. Angle dekkor is used in combination with angle gauge. First the angle gauge combination is set up to the nearest known angle of the component. Now the angle dekkor is set to zero reading on the illuminated scale. The angle gauge build up is then removed and replaced by the component under test. Usually a straight edge being used to ensure that there is no change in lateral positions. The new position of the reflected scale with respect to the fixed scale gives the angular tilt of the component from the set angle.


(ii) Checking the slope angle of a V-block

 

Figure shows the set up for checking the sloping angle of V block. Initially, a polished reflector or slip gauge is attached in close contact with the work surface. By using angle gauge zero reading is obtained in the angle dekkor. Then the angle may be calculated by comparing the reading obtained from the angle dekkor and angle gauge.

 

(iii) To measure the angle of cone or Taper gauge

Initially, the angle dekkor is set for the nominal angle of cone by using angle gauge or sine bar. The cone is then placed in position with its base resting on the surface plate. A slip gauge or reflector is attached on the cone since no reflection can be obtained from the curved surface. Any deviation from the set angle will be noted by the angle dekkor in the eyepiece and indicated by the shifting of the image of illuminated scale.


Tags : Mechanical - Metrology and Measurements - Linear and Angular Measurements
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