Radius alarm

[only_wallace]

I cant enter a radius of .375 without the mcu alarming out

 

[Chimpwithastick]

You will get more help if you give more information usually. What is your machine model? What is the controller? What tooling are you using? etc. Read the Posting Guidelines

 

[BT Fabrication]

probably something to do with the tool radius being the same size. as 3/4" is only rad of 0.375. cutter cuts from center line and 0.375 is cutting on center any less and the part is cutting in the negative.
also whats the D28 code for?

 

[sinha]

Two points cannot be joined by an arc with a radius smaller than half the distance between them.
This might be the reason. Make a to-scale drawing.
Or, calculate the distances, to find out the minimum possible radius.

 

[Mtndew]

The 1st rad, you're moving .500 in Y while trying to cut a .43 rad.
The 2nd rad you're moving .500 in X while trying to cut a .43 rad.

 

[mcode]

It looks like you're trying to do a full radius on 3/4 key stock. If that's the case try this:
G0G90X1.Y.76
G1G41X1.Y.375F5.
G2X1.Y-.375R.375
G1G40Y-.76
This is assuming that you have .375 radius or less in your tool offset.

 

[angelw]

I doubt that the issue has anything to do with the size of the radius features, as with a G02 move and G41 Tool Radius Comp direction (Left), they are external radii being cut, accordingly, you won't get tool radius interference even when using a cutter radius larger than the radius being cut. I suspect that its due to the acute angle created by the Linear Tool Radius Comp Start Up move from X1.5 Y0.75 and the first arc. It could also have something to do with the Tool Radius Comp End Command with no Coordinates specified. The Look Ahead Buffering may see this as an error.

It looks like you're trying to do a full radius on 3/4 key stock. If that's the case try this:

The coordinates of the OP's program show two arcs with different centres, therefore, unless the OP has made a mistake with the coordinates, the two radius features don't form one continuous arc.



Regards,

Bill

 

[angelw]

The 1st rad, you're moving .500 in Y while trying to cut a .43 rad.
The 2nd rad you're moving .500 in X while trying to cut a .43 rad.

Both quite possible.

Regards,

Bill

 

[BluishInventor]

also whats the D28 code for?

diameter offest #28, it's called with the G41 to either add the cutter geometry and/or wear.

 

[mcode]

The coordinates of the OP's program show two arcs with different centres, therefore, unless the OP has made a mistake with the coordinates, the two radius features don't form one continuous arc.

I agree, By the description at the beginning of the OP's program and when the code is plotted out it looks like some fudging around is taking place to achieve something fairly simple. More info of what the OP is trying to achieve would be helpful.

 

[only_wallace]

It looks like you're trying to do a full radius on 3/4 key stock. If that's the case try this:
G0G90X1.Y.76
G1G41X1.Y.375F5.
G2X1.Y-.375R.375
G1G40Y-.76
This is assuming that you have .375 radius or less in your tool offset.

This looks useful; ill give it a try. Thanks.

 

[only_wallace]

This looks useful; ill give it a try. Thanks.

That shit worked!
This was my first time writing a program from scratch. Thanks again, fam'.

 

[sinha]

Next time, please post your drawing also. It will be easier to understand the requirements.

 

[Mtndew]

Both quite possible.

Regards,

Bill

You're right, I was thinking of a quadrant, not a half circle.