Siemens SINUMERIK 840Di Function Manual page 1717

Basic machine

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Longitudinal/face

The tool clearance angle is entered in different ways according to the type of machining

(longitudinal or face). If a tool is to be used for both longitudinal and face machining, two

cutting edges must be entered for different tool clearance angles.

If a tool clearance angle (tool parameter 24) of zero is entered, relief cutting is not monitored

in the turning cycles.

Please refer to the following documentation for more detailed information about the tool

clearance angle:

/PAZ/ Programming Guide, Cycles.

Tools with relevant tool point direction (SW 5 and higher)

Up to SW 4.x

The change from G40 to G41/G42 or vice versa is treated as a tool change for tools with

relevant tool point direction. This causes a preprocessor stop when a transformation (e.g.,

TRANSMIT) is active, and may lead to deviations from the intended part contour.

SW 5 and higher

The following changes have been made:

1. The change from G40 to G41/G42 or vice versa is no longer treated as a tool change.

Tool Compensation (W1)

Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0

Tool clearance angle for longitudinal and face machining

Therefore, a preprocessor stop no longer occurs with Transmit.

Detailed Description

2.3 Tool cutting edge

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