Cutting Data Calculator; Application - HEIDENHAIN TNC 620 User Manual

5
5.7

Cutting data calculator

Application

With the cutting data calculator you can calculate the spindle speed
and the feed rate for a machining process. Then you can load the
calculated values into an opened feed rate or spindle speed dialog
box in the NC program.
To open the cutting data calculator, press the
CUTTING DATA CALCULATOR soft key. The control shows the soft
key if you
open the on-line calculator (press the CALC soft key)
open the dialog field for spindle speed input in the TOOL CALL
block
open the dialog field for feed rate input in positioning blocks or
cycles
enter a feed rate in manual mode (press the F soft key)
enter a spindle speed in manual mode (press the S soft key)
The cutting data calculator is displayed with different input fields
depending on whether you calculate a spindle speed or a feed rate:
Window for spindle speed calculation:
Code letter
R:
VC:
S=
Window for feed rate calculation:
Code letter
S:
Z:
FZ:
FU:
F=
You can transfer the feed rate from the TOOL CALL
block into subsequent traversing blocks and cycles by
pressing the F AUTO soft key. If you have to change the
feed rate later, you only need to adjust the feed rate
value in the TOOL CALL block.
210
Meaning
Tool radius (mm)
Cutting speed (m/min)
Result for spindle speed (rev/min)
Meaning
Spindle speed (rpm)
Number of teeth on the tool (n)
Feed per tooth (mm/tooth)
Feed rate per revolution (mm/1)
Result for feed rate (mm/min)
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
Programming Aids | Cutting data calculator