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Pocket Milling

 
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JamieR
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Joined: 30 Jun 2004
Posts: 54
Location: Chicago

PostPosted: Fri Apr 29, 2005 5:27 pm    Post subject: Pocket Milling Reply with quote

The simplest way to achieve helical motion is by X and Y circular interpolation (G02 or G03) with a Z value added per revolution. Use an I command to specify the distance in X from the starting point to the center of the arc. To cut a complete circle of 360 degrees, do not specify an ending point for X or Y. If you use incremental positioning (G91), you can loop the cycle to achieve your depth using an L command. Here’s a sample program:

%
O1234;
(Helical Milling Example);
T1 M06;
G00 G90 G54 X0. Y0. S3000 M3;
G43 H01 Z0.1;
G00 X0.5;
G91; (incremental positioning)
G02 I-0.5 Z-0.25 F20. L4; (helical motion, 1 in. dia. x 1 in. deep)
G00 G90 X0;
G0 Z0.1 M09;
G53 Z0.;
G53 Y0.;
M30;
%
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