Heidenhain CNC Pilot 4290 V7.1 Description of B and Y axes User Manual download pdf (Page 47)

HEIDENHAIN CNC PILOT 4290 47

1.9 DIN PLUS: Magazine Tools

Define tool position G712

If the B axis was positioned using single commands, you need to

inform the control of the tool position by programming G712.

G712 contains the following declarations:

 Angle of the B axis

 Offset position angle

 Tool orientation

Offset position angle: The “offset position angle” rotates turning

tools to the “normal” or “upside down” attitude. When positioning

the tool, the CNC PILOT also takes the basic setting saved in the tool

database into account (position angle = position angle from the tool

data + offset position angle).

Tool orientation: The CNC PILOT takes the orientation of the cutting

edge into account when calculating the position of the tool tip. The

control distinguishes between roughing, finishing and button tools as

well as recessing and threading tools (see figure).

C=0° C=180°

Cycle G712 is interfaced to the control and the machine by

the machine tool builder. The following description of the

parameters and the operating sequence may therefore

deviate from the functionality provided on your machine.

The machine manual provides more detailed information.

Parameters

B B axis angle. Angle at which the B axis is located.

C Offset position angle of turning tools.

 0°: Tool attitude “normal”

 180°: Tool attitude “upside down”

O Orientation of turning tools. Position of the tool's cutting edge

(see figure).

 Tool positions 1, 3, 5, 7: For roughing, finishing and button

tools (neutral tools are recognized by the tool angle).

 Tool positions 2, 4, 6, 8: For recessing and threading cycles

(a “right-hand” or “left-hand” tool is defined in the tool

data).

G712 defines the position of the tool. The tool is not

moved.

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Heidenhain CNC Pilot 4290 V7.1 Description of B and Y axes User Manual Page 47