V9 Toolpath Problem

[Clawsie Machine]

I do a lot of machine with endmills to open up a hole from imperial to metric sizes since I do not have a lot of metric tools. I just recently got a new customer that is mostly metric. No problem, I drill the hole, then open them up with a endmill for the hole and SHCS. Tolerance for these are +-.005" INCH. That's why I do this. Now here's the problem.

I choose an arc, "toolpath", "contour", "chain", pick the arc with CLIMB milling direction. Choose a 1/2" endmill and choose "ramp" for contour type. I usually choose say .05" by depth. This was fine for circular Interpolation. Cutter would just run counter clockwise to depth, and at depth do one more arc to flatten the bottom of the contour.

BUT

Now it will do down the .05" in a Counter clockwise arc, then the next .05" it will run in a CLOCKWISE motion? It will keep going back and forth for the total depth. Just doesn't leave a nice finish as the start point seems to have a different size there? Code goes from "G3" to "G2" back to "G3" and so on? It has never done that till today, so any ideas?

Thanks, John

[SIG]

Sounds like your arc is incomplete or your start pt. and end pt. are not connected.

[cadcam]

Please send or attach your file sample so I can review sounds like you are chaining the wrong way. you do know by what direction you pick were it will cut keeping the tool to the left and CCW being climbing at all times.

[Michael82]

your problem is version 9 .You need to get X2 it has more details on things like this you should get it or at least try the demo @ MastercamX2.com

Best Regard,
Michael82

[cadcam]

I agree that MCX2 would be an improvment but that alone would not fix the issue at hand.

[Clawsie Machine]

I will post the file on Sunday. This is the first time in 10 years that this has happen to me where I thought something was "toggled on"? But I couldn't find anything???

[cadcam]

Sounds good look for it tommorow.

[Clawsie Machine]

OK, sorry for the delay, but here it is:
Parameters are, .020" above part to start, Helical ramp down to -.513
When I choose "ramp", DEPTH clicked Ramp depth .050. That's it.
This is just part of it.
If you like, PM me an email addy, and I will send the MC9 file and data so you can see the whole deal.
Thank, John


(MSG, 1/2" E'MILL )
:T5 M6
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[tobyaxis]

That looks like a major problem. This is what it looks like for those that do not have a back plotter. This if for an Acromatic Control right??

[Clawsie Machine]

Files have been email to Cad-cam.
Toby, your correct about the Acromatic controller. What's a back plotter???

[cadcam]

(What's a back plotter???) Sir go here and review this Editor that backplots this what I us along with Predators Full Varifacation softwares as I sell them to.

Links: http://www.shopfloorautomations.com/cnceditor.php
http://www.shopfloorautomations.com/vcnc.php

[tobyaxis]

Originally Posted by Clawsie Machine Files have been email to Cad-cam. Toby, your correct about the Acromatic controller. What's a back plotter???

I use Predator Virtual CNC, Predator Editor and NC Plot. My Predator Software is Licensed through BobCAD/CAM and NC Plot through Scott Martinez.

I have to admit that these are extremely valuable tools for back plotting 3 and 4 Axis Mills and 2 Axis Lathes. With a little trickery you can Verify Multi-Tasking Lathes.

Got to love Software

Here aare a few things I am testing in Predator Virual CNC for 4 Axis machining. So far I have not been successful with building a complete CNC Mill but these are some simple parts with STL Fixtures.

You can see more examples on my website at www.axiscncprogramming.com for Predator Virtual CNC, Predator Editor, and NC Plot.