Comparators are the devices which are used to find only dimensional difference between the actual manufactured component and standard or master componen...
Sine bar
Wednesday, 13 April 2016
Sine bar is an instrument which is used for measuring smaller taper angles. Here taper means slant(inclined). So, the smaller angles are determined accurately by using Sine bar.
While using a Sine bar for finding the taper angles, some other intermediate equipment are required. Those are Surface plate, Slip gauges and a Dial indicator....
surface integrity
Monday, 27 October 2014
Surface integrity means it is a condition of surface of a component after manufacturing process. After manufacturing process the surface may be consisting of smoother surface or surface with irregularities. These conditions depends on the process characteristics of manufacturing process we have selected for the component.
Generally, a component is made by casting operation or any other machining...
Measurment of Pitch:
Monday, 13 October 2014
A pitch value a screw thread can be measured in so many ways like by using screw pitch gauges, screw plug gauges and also by Tool Maker's Microscope. The screw pitch gauges are provided in a form of number of blades. Each blade provided with different thread profiles having different pitch values. The pitch value...
Measurement of Thread angle:
Monday, 13 October 2014
A Thread angle of a given screw thread can be determined by using Tool Maker's microscope. The microscope gives an enlarged view of the thread profile. In Tool Maker's microscope an illuminating unit is provided below a measuring table. This illuminating unit will focus the edge profile or contour shape of the thread....
Measurement of Minor diameter of External and Internal Threaded component
Sunday, 12 October 2014
Minor Diameter of External Threaded component:
The minor diameter of external threads can be determined by using a special type of micrometer which is provided with number of V-peices. These V pieces are changeable according to the root diameter of the thread profile. This method is used for British...
Measurement of major diameter of internal thread
Sunday, 5 October 2014
There is no perfect method for finding the elements of internal threads. But even we can find them by using screw pitch gauages and screw plug gauges. By using pitch gauges we can measure or check pitch value and by using the screw plug gauge we can measure or check major diameter.
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