Programming Aids | Cutting data calculator
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HEIDENHAIN | TNC 320 | ISO Programming User's Manual | 10/2017
4.7 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 T 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 Meaning
R: Tool radius (mm)
VC: Cutting speed (m/min)
S= Result for spindle speed (rev/min)
Window for feed rate calculation:
Code letter Meaning
S: Spindle speed (rpm)
Z: Number of teeth on the tool (n)
FZ: Feed per tooth (mm/tooth)
FU: Feed rate per revolution (mm/1)
F= Result for feed rate (mm/min)
You can transfer the feed rate from the T 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 T
block.
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