Question

Self Test - Before you 'single point' turn a 3/8 - 16 UNC thread calculate these dimensions in preparation. Single thread depth = (Undercut) Minor Diameter = Tool bit Travel = - Calculate for a 1′′ - 12 UNF Single thread depth = (Undercut) Minor Diameter = Tool bit Travel = - Calculate for a 13/4 " 5 UNC Single thread depth = (Undercut) Minor Diameter = Tool bit Travel =

Answer 1

In thread turning, the single thread depth, minor diameter, and tool bit travel need to be calculated. The calculations are based on the pitch and major diameter of the thread. The formulas can be used for different thread types.

Step-by-step explanation:

In thread turning, the single thread depth refers to the depth of the thread groove on the workpiece. The undercut is the distance from the top of the thread groove to the bottom of the thread. The minor diameter is the smallest diameter of the thread.

To calculate the single thread depth for a 3/8 - 16 UNC thread:

1. Single thread depth = (0.6495 / pitch) - undercut (usually rounded to the nearest thousandth of an inch)
2. Minor Diameter = Major Diameter - (2 x single thread depth)
3. Tool bit Travel = Single thread depth + undercut

To calculate the single thread depth for a 1'' - 12 UNF thread or a 13/4'' - 5 UNC thread, the same formulas should be used, but with the appropriate pitch and major diameter values.