USE/CARE OF HANDTOOLS & MEASURING TOOLS - OD1621 - LESSON 2/TASK 2
FIGURE 143.
USING A DIE AND DIESTOCK.
(b) Secure the work firmly in a vise (figure 143).
(c) See that the die is held firmly in the diestock.
Set an
adjustable die to the desired size before securing it in the diestock.
(d) Drop some cutting oil on the work and the die, and position
the chamfer of the front face of the die (side with the longest chamfer)
squarely on the work.
(e) Rotate the die slowly, but firmly, until the threads take
hold. After cutting several threads, stop to determine if the die is square
with the work. Use a tri square or suitable tool to check squareness.
(f) Turn the die back a quarter turn after each forward full turn
to prevent teeth from breaking off and for ease of threading.
NOTE
When threading
hard
materials,
use
cutting
oil
liberally.
(g) Back the die off the newly cut thread carefully and check the
cut threads with the proper screw pitch gage.
185
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