THREAD CUTTING 2 - Practice Mode
1) What is the purpose of change gear train in centre lathe?
Explanation:
Tan θ = Opposite / Adjacent
2) What is the purpose of idler gear in simple gear train?
Explanation:
Tan θ = Opposite / Adjacent
3) Which parameter will decide the driver and driven gear ratio to cut thread on lathe?
Explanation:
Fundamental and derived units are the two classifications of system of units.
Fundamental Quantities: The physical quantities that do not depend upon the other quantities are the fundamental quantities.
Derived Quantities: The physical quantities that depend upon the fundamental quantities are known as the derived quantities.
4) Calculate the change gear to cut 6 mm pitch on a work having a lead screw of 5 mm pitch. Gears available from 20 to 120 teeth by 5 teeth range.
Explanation:
The measurement of physical quantities is one of the most important operations in engineering. Every quantity is measured in terms of some arbitrary, but internationally accepted units, called fundamental units.
All physical quantities, met within this subject, are expressed in terms of the following three fundamental quantities :
1. Length (L or l ),
2. Mass (M or m), and
3. Time (t).
5) Calculate the change gear to cut 8 mm pitch on a work having a lead screw of 4 mm pitch gear 20 to 120 teeth by 5 teeth range
Explanation:
MKS is the system of units based on measuring lengths in meters, mass in kilograms, and time in seconds.