Cutting Data Calculator; Application - HEIDENHAIN TNC 620 User Manual

Programming aids | Cutting data calculator
6.9

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
Press the CALC key
Define spindle speeds
Define feed rates
Press the F soft key in Manual Operation mode
Press the S soft key in Manual Operation mode
Display modes of the cutting data calculator
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:
Abbrev. Meaning
T: Tool number
D: Diameter of the tool
VC: Cutting speed
S= Result for spindle speed
If you open the speed calculator in a dialog where the tool is already
defined, the speed calculator automatically applies the tool number
and diameter. You only need to enter VC in the dialog field.
Window for feed rate calculation:
Abbrev. Meaning
T: Tool number
D: Diameter of the tool
VC: Cutting speed
S: Spindle speed
Z: Number of teeth
FZ: Feed per tooth
FU: Feed per revolution
F= Result for feed rate
You can transfer the feed rate from the TOOL CALL block
into subsequent NC blocks 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.
HEIDENHAIN | TNC 620 | Klartext Programming User's Manual | 01/2022
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