Operation
Version 1.0.1 dated 2017-11-16
Page 53
Translation of the original instructions
TX6222
GB
T
X
6222
_GB
_4.
fm
OPTIMUM
M A S C H I N E N - G E R M A N Y
®
4.22.3 Feed and thread cutting table
CAUTION!
The acceptable maximum feed speed for thread cutting is 0.5 meters per minute. Thread
cutting is always done using the lowest speed adjustment.
The thread cutting process requires that the operator has a good knowledge of turning and suf-
ficient experience.
NOTES!
Example of an external thread:
The workpiece diameter must have been turned to the diameter of the desired thread.
The workpiece requires a chamfer at the beginning of the thread and an undercut at the
thread run out.
The speed must be as low as possible.
The thread cutting tool must be exactly the same shape as the thread, it must be absolutely
rectangular and must be clamped in a way that it coincides exactly with the turning centre.
The threading engaging lever must be engaged during the whole thread cutting process.
The thread is produced in various cutting steps in a way that the cutting tool has to be
turned out of the thread completely (with the cross slide) at the end of each cutting step.
Metric threads
Inch threads
Module thread
D.P. thread
Cross feed / Longitudinal feed
