1、v c a p F c H 2 General technical information Turning calculation formulae Speed Cutting speed Feed rate Metal removal rate Chip cross section Chip width, chip thickness Main cutting force Power requirement Cutting time Roughness profile depth n Speed rpm D cCutter diameter mm v cCutting speed m/min
2、 v fFeed rate mm/min f Feed per revolution mm Q Metal removal rate cm 3 /min a pDepth of cut mm A Chip cross section mm 2 h Chip thickness mm b Chip width mm Approach angle F cMain cutting power N k c1.1 * Specific cutting force N/mm 2for 1 mm chip cross-section m c * Increase in the k ccurve P motD
3、rive power kW t hCutting time min l mLength of cut mm R maxRoughness profile depth m r Corner radius of the insert mm Efficiency of machine (0.75 0.9) *m c and k c 1.1 see table on page H 7n v f f f z n v f f f z H 3 General technical information Drilling calculation formulae n Speed rpm D cCutter d
4、iameter mm z Number of teeth v cCutting speed m/min v fFeed rate mm/min f zFeed per tooth mm f Feed per revolution mm A Chip cross section mm 2 Q Metal removal rate cm 3 /min P motDrive power kW M cTorque Nm F fAxial force N h Chip thickness mm k cSpecific cutting force N/mm 2 Efficiency of machine
5、(0.70.95) Approach angle k c1.1 * Specific cutting force N/mm 2for 1 mm Chip cross section with h = 1 mm m c * Increase in the k ccurve *m c and k c 1.1 see table on page H 7 Speed Cutting speed Feed per revolution Feed rate Metal removal rate (drilling) Power requirement Torque Feed force Specific
6、cutting force Chip thicknessf z h m v f m s 1 2 D c a e s 1 2 = 90 D c a e y = a e D c /2 H 4 General technical information n Speed rpm D cCutter diameter mm a pDepth of cut mm a eWidth of cut mm z Number of teeth v cCutting speed m/min v fFeed rate mm/min f zFeed per tooth mm Q Metal removal rate c
7、m 3 /min P motDrive power kW h mMedium chip thickness mm k cSpecific cutting force N/mm 2 Efficiency of machine (0.70.95) Approach angle sEngagement angle 1Up-cut milling area 2Synchronous milling area k cSpecific cutting force N/mm 2 k c1.1 * Specific cutting force N/mm 2for 1 mm 2chip cross sectio
8、n m c * Increase in the k c curve y Reverse engagement mm *m c and k c1.1 see table on page H 7 Milling calculation formulae Speed Cutting speed Feed rate Feed per tooth Metal removal rate Power requirement Medium chip thickness or as approximation formula for a e /D c 30% Engagement angle where cut
9、ter is positioned centrally where cutter is positioned eccentrically Specific cutting forcea e a e vfa n D w D v Dm D a v fi n D w D a D v D m a e H 5 General technical information Engagement ratio for external circular interpolation Engagement ratio for internal circular interpolation External prof
10、ile feed rate Circular interpolation traverse time Cutter engagement width for external circular interpolation External contour v faFeed rate of tool axis mm/min D aCutter outer diameter mm D mMid-point path diameter mm D vWorkpiece raw diameter mm D wWorkpiece machined diameter mm a eMaterial remov
11、al mm n Speed rpm f zFeed per tooth mm z Number of teeth Internal contour v fiFeed rate of tool axis mm/min D aCutter diameter mm D vWorkpiece raw diameter mm D wWorkpiece machined diameter mm n Speed rpm Internal profile feed rate Circular interpolation traverse time Cutter engagement width for int
12、ernal circular interpolationH 6 General technical information Thread machining calculation formulae Speed Cutting speed Torque Power requirement tool Power requirement motor Thread milling calculation formulae k cSpecific cutting force N/mm 2 n Speed rpm h Thread pitch mm d 1Nominal thread diameter mm P motDrive power kW MMachine efficiency (1) Contour feed (v f ) Mid-point path (v m ) d = Mill D = Nominal
