Messages

1281

General Mach Discussion / Re: Work in a different quadrant?

« on: September 02, 2016, 01:46:39 AM »

Thanks, will check that.

The G90/91/28 seems to be a known post error, i cant find the posts though to edit it, they are hidden away on Mac with F360, will get on the Fusion forum.

1282

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: September 02, 2016, 01:43:16 AM »

I've said it before, but man, i love that basket tool-changer

Yep that was close on the drill. I think part my problem is still thinking manually, not CNC, you have to replace your brain with code and know what will happen before you press the green button.

In your case i would have dropped the knee and done two setups maybe but thats just a thought

I can lower the clearance plane to miss clamps - even my generous 35mm would not miss the bolt/studs so maybe i was just going too far and using up z travel for no gain, 20mm will skip a clamp.

So much to learn.

I guess one test would be to park at clearance height and make sure the shortest tool for the job can reach the lowest point in the job and longest tool clears the work, if it passes that then it should run.

1283

General Mach Discussion / Re: Work in a different quadrant?

« on: September 01, 2016, 02:55:22 PM »

Any chance someone could scan through the code below please, Mach is telling me the Z limits are +30 to -30 but i cant see why - the tool limits in the first few lines are correct and reflect the settings in CAM but i don't know where its getting -30 from??

1284

General Mach Discussion / Re: Work in a different quadrant?

« on: September 01, 2016, 02:51:34 PM »

Got it, thanks

1285

General Mach Discussion / Re: Work in a different quadrant?

« on: September 01, 2016, 02:30:25 PM »

Thats better, thanks.

Is there a way to toggle that while in the 2010 screen set?

I couldn't find one so had to load the 1024 set then toggle it and then reload the 2010

1286

General Mach Discussion / Re: Bridgeport Knee Mill Conversion?

« on: September 01, 2016, 01:25:38 PM »

Got the panel finished, just need to find or make some 22mm blanking plugs

I found tonight the limitations of a poor Z axis travel, did a test run on the parts that been discussed in my thread on work in different quadrants.

Ok so maybe i am being a bit overzealous by asking for a 35mm clearance plane, not sure, but when you take out the clearance plane, thickness of material, a little more for drill breakthrough, you are left with a  very small window of tool-height variation before the CSMIO throws a soft-limit-switch and bums out.

It needs the z axis to be zeroed when it's 36mm down from top limit - that allows the code to send it to Z35 for clearance, then you have to make sure that the shortest tool does not run it out of Z axis travel - i was going to use a slightly longer drill but will have to bum that idea and mill the holes or get stub-length drills etc.

It really is a lot more limiting than i imagined it would be, not having the ability to just throw the knee down a few turns to fit a big drill is an example - this would bugger the Z zero setting.

I guess i will have to run with much smaller clearance plane and double-check before each run that it misses the clamps etc.

Now i see why they make VMC's with 300+mm of Z axis travel

1287

General Mach Discussion / Re: Mach3 logic help

« on: September 01, 2016, 10:54:36 AM »

That looks nice to me

What tool was that running?

I think my lookahead is on 1000 at the moment, velocity 5000 and acc is 500, these may need tweaking though.

1288

General Mach Discussion / Re: Work in a different quadrant?

« on: September 01, 2016, 10:35:53 AM »

Hmm, knowledge gap biting...

I can't figure out ho to remove the waste from the profile

I can contour it which would slot all the way round but i was thinking to machine the corners off then run round the whole part, trouble is, the slot in the drawing means it wants to machine the big bore at the same time as its a common path, this won't work.

Anyone got Fusion 360 knowledge?

1289

General Mach Discussion / Re: Work in a different quadrant?

« on: September 01, 2016, 09:16:40 AM »

Interesting, here's my latest crib sheet for the bottom part....

Rough-clamp part and align long edge,
Drill two 12mm holes - one in small hole location and one in centre of big bore,
Machine the counterbores.

Flip over to front side, realign the long edge and bolt down on some spacers thru the two 12mm holes into tee-slots,
Drill the three holes,
Mill the centre slot,
Mill the profile,
fit clamps outside of machining area and remove the two bolts,
mill the big bore
mill the small bore
mill the slot

In my mind it should work, I have kept the same work origin, the part was aligned each time accurately, no sub plate was needed just a couple of scraps.

1290

General Mach Discussion / Re: Work in a different quadrant?

« on: September 01, 2016, 08:20:26 AM »

screen shot of Mach test setup