HEIDENHAIN TNC 620 User Manual page 198

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Requirements for tool compensation

You usually program the coordinates of path contours as they

are dimensioned in the workpiece drawing. To allow the TNC to

calculate the tool center path i.e. the tool compensation you must

also enter the length and radius of each tool you are using.

Tool data can be entered either directly in the part program with

G99 or separately in a tool table. In a tool table, you can also enter

additional data for the specific tool. The TNC will consider all the

data entered for the tool when executing the part program.

Tool number, tool name

Each tool is identified by a number between 0 and 32767 . If you are

working with tool tables, you can also enter a tool name for each

tool. Tool names can have up to 32 characters.

Permitted special

4 5 6 7 8 9 @ A B C D E F G H I J K L M N O P Q R S

T U V W X Y Z

The control automatically replaces lowercase letters

with corresponding uppercase letters during saving.

Impermissible

+ : ; < = > ? [ / ] ^ ` { | } ~

The tool number 0 is automatically defined as the zero tool with the

length L=0 and the radius R=0. In tool tables, tool T0 should also

be defined with L=0 and R=0.

Tool length L

You should always enter the tool length L as an absolute value

based on the tool reference point. The entire tool length is

essential for the TNC in order to perform numerous functions

involving multi-axis machining.

Tool radius R

You can enter the tool radius R directly.

characters: # $ % & , - _ . 0 1 2 3

characters: <Leerzeichen> ! " ' ( ) *

HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016

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