HEIDENHAIN TNC 640 User Manual page 631

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Multiple-Axis Machining | Three-dimensional tool compensation (option 9)

13.6 Three-dimensional tool compensation

Introduction

The control can perform a three-dimensional tool compensation

(3-D compensation) for straight line blocks. Apart from the X, Y

and Z coordinates of the straight-line end point, these blocks must

also contain the components NX, NY and NZ of the surface-normal

Further information:

"Definition of a normalized vector",

If you want to carry out a tool orientation, these blocks also require

a normalized vector with the components TX, TY and TZ that

determines the tool orientation,

Further information:

"Definition of a normalized vector",

The straight-line end point, the components for the surface normals

as well as those for the tool orientation must be calculated by a

Possible applications

Use of tools with dimensions that do not correspond with the

dimensions calculated by the CAM system (3-D compensation

without definition of the tool orientation).

Face milling: compensation of the cutter geometry in the

direction of the surface-normal vector (3-D compensation with

and without definition of the tool orientation). Cutting is usually

with the end face of the tool.

Peripheral milling: compensation of the cutter radius

perpendicular to the direction of movement and perpendicular to

the tool direction (3D radius compensation with definition of the

tool orientation). Cutting is usually with the lateral surface of the

HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017

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