Siemens SINUMERIK 840D Operation/Programming Manual page 237

3
10.04
Chipbreaking
Tapping
Call help display with
the key
Parameters
T, D, S, V See Sec. "Programming the tool, offset value and spindle speed".
P Pitch
The pitch is determined by the tool used.
MODULUS: Used with endless screws, for example, which extend into a gear wheel.
Turns/ ": Used with pipe threads, for example.
For values entered in turns/", enter the integer in front of the decimal point in the first
parameter field and the figures after the decimal point as a fraction in the second and
third field.
For example, 13.5 turns/" is entered as follows:
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition
1. The tool drills at the programmed spindle speed S or feedrate V
as far as the first infeed depth (maximum infeed depth D).
2. The tool retracts by the retraction amount V2 for chipbreaking.
3. The tool then drills to the next infeed depth at spindle speed S or
feedrate V.
4. Steps 2 and 3 are repeated until the programmed final drilling
depth Z1 is reached.
5. The direction of rotation of the spindle reverses and the tool
retracts to the safety clearance at spindle speed SR or cut rate
VR.
For tapping with an analog spindle, a floating tapholder is required.
This can only be used to dill in one cut.
The machine manufacturer may have made specific settings for
tapping in a machine data code.
Please refer to the machine manufacturer's instructions.
Press the "Drilling", "Boring", and "Tapping" softkeys.
Boring >
Help display for tapping
Programming with ShopMill
Description
3
3.7 Drilling
Unit
mm/rev
in/rev
MODULE
Turns/ "
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