HEIDENHAIN TNC 640 User Manual

Programming Contours | Path contours – FK free contour programming
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
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7.6 Path contours – FK free contour
programming
Fundamentals
Workpiece drawings that are not dimensioned for NC often contain
unconventional coordinate data that cannot be entered with the
gray dialog keys.
You can enter such dimensional data directly by using the free
contour programming function FK, e.g.
If there are known coordinates on or in the proximity of the
contour element
If coordinate data refers to another contour element
If directional data and data regarding the course of the contour
are known
The control derives the contour from the known coordinate
data and supports the programming dialog with the interactive
FK programming graphics. The figure at upper right shows
a workpiece drawing for which FK programming is the most
convenient programming method.

HEIDENHAIN TNC 640 Specifications

General

Control Type	CNC
Axes	Up to 18 axes
Interfaces	Ethernet, USB, RS-232
Spindle Control	Yes
PLC	Integrated
Storage	SSD
Programming Languages	DIN/ISO
Safety Features	safety functions according to EN ISO 13849-1
Dimensions	Varies based on configuration
Weight	Varies based on configuration
Operating System	Windows