tornos DECO 7/10 - Explanations to Example; Formula for One Variant

OPTIONS & ALLIED TOOLING − DECO 7/10 − DECO 7a/10a − DECO 7e/10e
300236 en − 02/07 Chap. 14.7.3 /9
14.7.2 Explanations to Example
C4=4950 = Thread Length + Distance between Tool and Workpiece
divided by Lead and multiplied by 3605
Example:
4.5 + 1 = 5.5 mm
5.5: 0.4 = 13.75 rev
13.75 x 360 = 4950°
F18000 = Spindle Speed 50 rpm x 3605
50 x 360 = 18000 °/min
14.7.3 Formula for One Variant
NSK spindle speed: 30000 rpm
Obligatory feedrate: 0.0105 mm/rev
30000 x 0.0105 = 315 mm/min
S4 spindle speed: 50 rpm
315: 6.2832 = 50 rpm
6.2832 mm = 3.1416 x Thread Diameter (circumference)
3.1416 x 2 = 6.2832 mm
30000 rpm = Development [mm] divided by Chip
315: 0.0105 = 30000 rpm (NSK spindle)