Programming contours
6.5
Path contours – Polar coordinates
6
266
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
Circular path G12/G13/G15 around pole I, J
The polar coordinate radius
R
is also the radius of the arc.
R
is
defined by the distance from the starting point to the pole
I, J
. The
last programmed tool position will be the starting point of the arc.
Direction of rotation
In clockwise direction:
G12
In counterclockwise direction:
G13
Without programmed direction:
G15
. The TNC traverses the
circular arc with the last programmed direction of rotation
Polar coordinate angle H
: Angular position of
the arc end point between -99999.9999° and
+99999.9999°
Direction of rotation DR
Example NC blocks
N180 I+25 J+25*
N190 G11 G42 R+20 H+0 F250 M3*
N200 G13 H+180*
With incremental inputs you must enter DR and PA
with the same sign.
Consider this behavior when importing programs
from earlier controls. Adapt the program if required.
Circle G16 with tangential connection
The tool moves on a circular path, starting tangentially from a
preceding contour element.
Polar coordinate radius R
: Distance between the
arc end point and the pole
I, J
Polar coordinate angle H
: Angular position of the
arc end point.
The pole is
not
the center of the contour arc!
Example NC blocks
N120 I+40 J+35*
N130 G01 G42 X+0 Y+35 F250 M3*
N140 G11 R+25 H+120*
N150 G16 R+30 H+30*
N160 G01 Y+0*
Summary of Contents for TNC 620 Programming Station
Page 4: ......
Page 5: ...Fundamentals ...
Page 28: ...Contents 28 HEIDENHAIN TNC 620 ISO Programming User s Manual 9 2016 ...
Page 57: ...1 First Steps with the TNC 620 ...
Page 77: ...2 Introduction ...
Page 110: ......
Page 111: ...3 Fundamentals file management ...
Page 166: ......
Page 167: ...4 Programming aids ...
Page 194: ......
Page 195: ...5 Tools ...
Page 234: ......
Page 235: ...6 Programming contours ...
Page 284: ......
Page 285: ...7 Data transfer from CAD files ...
Page 304: ......
Page 305: ...8 Subprograms and program section repeats ...
Page 323: ...9 Programming Q parameters ...
Page 384: ......
Page 385: ...10 Miscellaneous functions ...
Page 407: ...11 Special functions ...
Page 433: ...12 Multiple axis machining ...
Page 475: ...13 Pallet management ...
Page 480: ......
Page 481: ...14 Manual Operation and Setup ...
Page 549: ...15 Positioning with Manual Data Input ...
Page 554: ......
Page 555: ...16 Test Run and Program Run ...
Page 590: ......
Page 591: ...17 MOD Functions ...
Page 622: ......
Page 623: ...18 Tables and Overviews ...