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SQT 300MY - EIA program issue

cncshane

Plastic
Joined
Sep 10, 2009
Location
Oklahoma, USA
Trying to engrave on a 5.00" OD part and I am having trouble with the direction of my C axis. It is only traveling in one direction. So if the angle I need C to go to connect my letters is opposite of the direction it wants to go then it will travel all the way around the part to get there instead of going backwards. Has anyone had similar issues? We usually dont do EIA programs on our mazaks but for this job it was needed. Here is a sample and more descriptions.....

N100 G20 G90
N102 G0 G30.1 U0. V0.
N104 M200
N106 G28 H0
N108 G0 T1111 M8
N109 G0 G97 S1000 M203 M08
N110 M212

(this 1st section is milling a number 1 and does it fine)
N112 G0 Z-1.
N114 G98 X5.1 Y0
N116 G0 C61.2089
N118 G1 X4.98 F15.0
N120 Z-1.25
N122 Z-1.1875 C62.6413 F200.0

(this section is trying to mill a number 3 and will wrap around the part to get to some of the angles,
something I learned is that as long as my angle gets bigger then it works just fine but if it starts bigger and tries to go back is when it will wrap to try to get there. In the sample below, going from C69.087 to C68.7289, it will go all the way around the part, it goes around the part several times trying to makes this lil ol 3. In the sample above, from C61.2089 to C62.6413 works no problem.)
N124 G0 X5.1
N126 Y0 Z-1.0625 C69.087
N128 G1 X4.98 F15.0
N130 Z-1.0313 C68.7289 F200.0
N132 Z-1.0156 C68.3708
N134 Z-1. C67.6546
N136 C66.9384
N138 Z-1.0156 C66.2223
N140 Z-1.0313 C65.8642
N142 Z-1.0625 C65.5061
N144 Z-1.0781 F.02
N146 Z-1.1094 C65.8642 F.125
N148 Z-1.125 C66.2223
N150 C67.6546
N152 C66.2223
N154 Z-1.1406 C65.8642
N156 Z-1.1719 C65.5061
N158 Z-1.1875 F.02
N160 Z-1.2188 C65.8642 F.125
N162 Z-1.2344 C66.2223
N164 Z-1.25 C66.9384
N166 C67.6546
N168 Z-1.2344 C68.3708
N170 Z-1.2188 C68.7289
N172 Z-1.1875 C69.087
N174 G0 X5.1


Thanks in advance!
 
When you have to go to a smaller C try using "H". H is incremental for C. For instance if you are at C90. and want to go to C89. point substitute H-1.0 for C89.
 








 
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