Fanuc 0i-md

[Vicki]

Whatif the x+ and x- distance is 101.287mm and i want my x zero at the center? Usually i use calculator to divide it 2 to get center point. It is amazing that fanuc does not have easier way to calculate this.

I have the Haimer 3d taster that can be dialed to the rotation center so setting program zero at the edge of part is not the problem. Here is a scenario, I have part about 1000mm in X direction, I want the program X zero point to exact center of the part. What I do now is touch one end of the part and zero relative display, then I go touch other end of the part, look the number in relative display (for example 1004.324mm) and use calculator to divide it by two. After this I jog the machine to relative 501.162mm and dial x0. then press measure.

I have one machine with Fanuc control that has feature built by the MTB that makes this procedure easier by letting you press a key at both ends of part and it records the position, after this you press calculate and it updates part center point to desired work offset automatically. This feature should be standard in every fanuc control.

Since you are not setting your x/y at the edge of the part you need to measure the part to get the radius. Either before placing it in the machine, or after as you are now. Without a touch probe, there is no way around this. Although, you can skip the incremental movement to part center because once you know the radius of the part you can touch off on one side and type XRadius and press measure (X501.162 to use your example above). I know what you would like is to type X1002.324 / 2 measure. A touch probe and Macro B will allow you do do all of this automatically but manually I don't know of a better way.

Im using a 3D Sensor to set the middle of my jobs to X,Y zero. I can not see how to set the X,Y zero without having to move half the found incremental distances / 2. Then setting work offset by X0, Y0 Measure.

Here is an quick and dirty example how I take X- axis program zero to center without calculator. Requires only pressing three keys and I dont have to input any coordinates. This software is made by the machine tool builder. Feature like this should be part of every fanuc control.

Did you miss the part where he said, "If it's raw stock that's saw cut to length, that should be sufficient." Why dial something in to +/-.001 when +/-.020 will suffice? If it's raw stock that's going to get cut on 5 sides, who gives a rat's a$$ if it takes .030" off one side and .020" off the other? (Unless your radial DOC's are critical for tool life, but in that case you'd take greater care.) If the part is getting cleaned up and everything is in spec then you're golden.

I did not miss anything, Ive just learned from experience that when you start eye balling your program zeros on easy parts and save maybe 5 seconds doing so, sooner or later you scrap a part because of this. I prefer using one certain way of taking my work zeros that works almost every workpiece and its just happens to be the most accurate way also.

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