Metrology of Screw Thread-Measurement of Various Elements of Thread
Posted by mechlook info on October 31st, 2011 01:14 AM | No Comment
Measurement of Various Elements of Thread
The methods discussed here are from the point of view of measurement of gauges, but they can obviously be applied to precise work, threading tools, taps and hobs etc. We will be dealing with the ...
Metrology of Screw Thread-Effect of Pitch Errors
Posted by mechlook info on October 31st, 2011 01:13 AM | 2 Comments
Effect of Pitch Errors
An error in pitch virtually increases the effective diameter of a bolt or screw and decreases the effective diameter of a nut. The meaning of the virtual change in effective diameter is that if any screw is ...
Metrology of Screw Thread-Screw Threads Terminology
Posted by mechlook info on October 31st, 2011 01:13 AM | No Comment
Screw Threads Terminology
(1) Screw thread. A screw thread is the helical ridge produced by forming a continuous helical groove of uniform section on the external or internal surface of a cylinder or cone. A screw thread formed on a cylinder ...
Metrology of Screw Thread-Introduction
Posted by mechlook info on October 29th, 2011 02:38 PM | No Comment
Introduction
Screw thread has generally two functions to perform, viz., transmission of power and motion, and to act as a fastener. Second
function is rather more important, so we will be more concerned with Vee-form of threads. The object of dimensional control ...