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HEIDENHAIN TNC 640 (34059x-04) ISO programming User Manual

Page 56

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First Steps with the TNC 640

1.3

Programming the first part

1

56

TNC 640 | User's Manual for DIN/ISO Programming | 3/2014

Machine the contour and move to the contour

point

2

: You only need to enter the information

that changes. In other words, enter only the Y
coordinate 95 and save your entry with the

END

key
Approach contour point

3

: Enter the X coordinate

95 and save your entry with the

END key

Define the chamfer at the contour point

3

: Enter

the chamfer width 10 mm and confirm with the

END key
Approach contour point

4

: Enter the Y coordinate 5

and save your entry with the

END key

Define the chamfer at the contour point

4

: Enter

the chamfer width 20 mm and confirm with the

END key
Approach contour point

1

: Enter the X coordinate 5

and save your entry with the

END key

Enter

27 to depart from the contour: Define the

rounding radius of the departing arc
Enter

0. To retract the tool, select : Press the

orange axis key

Z in order to get clear in the tool

axis, and enter the value for the position to be
approached, e.g. 250. Press the

ENT key

Radius comp.: RL/RR/no comp.? confirm with the

ENT key: Activate no radius compensation
MISCELLANEOUS FUNCTION M? Enter M2 to enter
end of program, then confirm with the

END key.

The TNC saves the entered positioning block

Further information on this topic

Complete example with NC blocks

: See "Example: Linear

movements and chamfers with Cartesian coordinates",

page 218
Creating a new program: See "Opening programs and entering",

page 95
Approaching/departing contours: See "Approaching and

departing a contour"
Programming contours: See "Overview of path functions",

page 209
Tool radius compensation: See "Tool radius compensation ",

page 191
Miscellaneous functions (M): See "M functions for program run

inspection, spindle and coolant ", page 329