3/60
Theoretically feasible thread pitch
that
The raaximum thread pitch/can be attained in the individual case with the turnina machinę concerned depends on the maximum feedrate and on the minimum spindle speed :
max. feedrate (ntm/min)
max. thread pitch (mm.) = -
min. spindle speed (r.p.m.)
Example :
The foliowing is yielded for a turning machinę with a maximum feedrate of 10 000 mm/min and a minimum spindle speed of 22 r.p.m. :
10 000
max. thread pitch
454.545 mm
22