[dmauch]

So are you saying that the cnctoolkit does work with a trunnion table and Gmax?\Dan Mauch

Hey there, sorry for the late reply. Actually I havent done anything special with the gmax script. I learnt the trick is setting your work exactly as the code was generated for.. (Actually the other way around) So if your A and B axis are aligned exactly like I have this one setup. The offsets would have to be set to 0. But of course your chuck/fixture pushes the work out. You will have to carefully measure your actual part to the 0,0,0,0,0 point. So your 3d file has to be setup at the exact same distance to zero from the y axis.... Or whatever orientation you have yours setup. You might have to reverse some of your axis too. I had to step through the code one by one to figure out which ones I had reversed.

And remember. Your gcode image in mach3 should look like gibberish! It doesnt compensate for the A and B axis in mach3.

But honestly im not an expert with the script. I just mentioned it because it would be neat if more people used it like you say.

[MichaelGolden]

So are you saying that the cnctoolkit does work with a trunnion table and Gmax?\Dan Mauch

Yes it should. But you have to set your axis offsets to zero.. or actually I was getting an error so 0.0001

I generated a 2 inch, 5 axis test sphere this morning for you. If you look at this gcode step by step everything moves the way it should according to the projected spline.

A is the rotation of X and B is the rotation of Y


( Output Starts Here )
(File
(Toolpath:Projected01)
T1M6
M3
G0 X0.0 Y0.0 Z0.0 A0.0 B0.0
X-2.5312 Y-2.3249 Z27.2658 A0.0 B0.0
G1 F50.0 X-2.5312 Y-2.3249 Z2.2658 A0.0 B0.0
G1 F100.0 X-2.0312 Y-2.3249 Z2.2658 A0.0 B0.0
X-1.5312 Y0.0261 Z3.2462 A-46.199 B-50.3917
X-1.0312 Y0.0262 Z3.2462 A-46.1994 B-31.1006
X-0.5312 Y0.0248 Z3.2462 A-46.1757 B-15.2062
X-0.0312 Y0.0208 Z3.2463 A-46.1045 B-0.5168
X0.4688 Y0.0148 Z3.2463 A-45.9987 B14.072
X0.9688 Y0.0077 Z3.2463 A-45.8742 B29.6227
X1.4688 Y0.0009 Z3.2463 A-45.7537 B47.9302
X1.9688 Y-0.0041 Z3.2463 A-45.6651 B83.5617
X2.4688 Y-2.3249 Z2.2658 A0.0 B0.0
X2.4688 Y-1.8249 Z2.2658 A0.0 B0.0
X1.9688 Y-0.0073 Z2.9093 A-38.7052 B83.5298
X1.4688 Y-0.0018 Z2.9093 A-38.8133 B48.0146
X0.9688 Y0.0061 Z2.9093 A-38.9679 B29.6388
X0.4688 Y0.0041 Z1.9443 A-69.9372 B13.8513
X-0.0312 Y0.0059 Z1.9997 A-66.0291 B-0.6741
X-0.5312 Y0.0048 Z1.9282 A-71.3047 B-15.3869
X-1.0312 Y0.0284 Z2.9091 A-39.4084 B-31.0779
X-1.5312 Y0.0272 Z2.9091 A-39.3843 B-50.4707
X-2.0312 Y-1.8249 Z2.2658 A0.0 B0.0
X-2.5312 Y-1.8249 Z2.2658 A0.0 B0.0
X-2.5312 Y-1.3249 Z2.2658 A0.0 B0.0
X-2.0312 Y-1.3249 Z2.2658 A0.0 B0.0
X-1.5312 Y0.028 Z2.6245 A-30.9277 B-50.012
X-1.0312 Y0.0117 Z1.7136 A-51.0284 B-31.0231
X-0.5312 Y0.0159 Z1.9281 A-43.8736 B-15.1527
X-0.0312 Y0.0152 Z1.9997 A-41.9268 B-0.4986
X0.4688 Y0.0093 Z1.9443 A-43.23 B14.0577
X0.9688 Y0.0041 Z1.7497 A-49.3525 B29.4832
X1.4688 Y0.0015 Z1.3574 A-77.4906 B47.8246
X1.9688 Y-0.0111 Z2.6247 A-30.0749 B83.3544
X2.4688 Y-1.3249 Z2.2658 A0.0 B0.0
X2.4688 Y-0.8249 Z2.2658 A0.0 B0.0
X1.9688 Y-0.0153 Z2.4112 A-19.6409 B82.9103
X1.4688 Y-0.0012 Z1.3574 A-37.3717 B47.9801
X0.9688 Y0.0021 Z1.7497 A-28.1976 B29.8023
X0.4688 Y0.0153 Z1.9442 A-25.5549 B14.3671
X-0.0312 Y0.0297 Z1.9995 A-25.2113 B-0.4291
X-0.5312 Y0.0289 Z1.928 A-26.1885 B-15.3974
X-1.0312 Y0.0206 Z1.7135 A-29.463 B-31.2464
X-1.5312 Y0.0118 Z1.2866 A-40.4 B-50.4842
X-2.0312 Y-0.8249 Z2.2658 A0.0 B0.0
X-2.5312 Y-0.8249 Z2.2658 A0.0 B0.0
X-2.5312 Y-0.3249 Z2.2658 A0.0 B0.0
X-2.0312 Y-0.3249 Z2.2658 A0.0 B0.0
X-1.5312 Y0.0147 Z1.2866 A-15.281 B-50.4836
X-1.0312 Y0.0221 Z1.7135 A-11.6684 B-31.5092
X-0.5312 Y0.0371 Z1.9278 A-10.8026 B-16.2964
X-0.0312 Y0.0554 Z1.999 A-10.9383 B-0.5913
X0.4688 Y0.0141 Z1.9442 A-10.0348 B15.053
X0.9688 Y-0.0071 Z1.7497 A-10.4691 B29.8868
X1.4688 Y-0.0084 Z1.3574 A-13.4912 B48.0185
X1.9688 Y0.0003 Z0.3518 A-67.476 B83.0155
X2.4688 Y-0.3249 Z2.2658 A0.0 B0.0
X2.4688 Y0.1751 Z2.2658 A0.0 B0.0
X1.9688 Y-0.0035 Z0.3518 A30.4244 B83.2844
X1.4688 Y-0.0147 Z1.3573 A8.0331 B47.932
X0.9688 Y-0.021 Z1.7496 A6.4316 B29.6942
X0.4688 Y-0.0362 Z1.9439 A6.2356 B14.899
X-0.0312 Y-0.0274 Z1.9996 A5.8088 B-1.2889
X-0.5312 Y-0.0006 Z1.9282 A5.2272 B-16.9821
X-1.0312 Y0.0119 Z1.7136 A5.4677 B-31.8519
X-1.5312 Y0.01 Z1.2866 A7.3764 B-50.8481
X-2.0312 Y0.1751 Z2.2658 A0.0 B0.0
X-2.5312 Y0.1751 Z2.2658 A0.0 B0.0
X-2.5312 Y0.6751 Z2.2658 A0.0 B0.0
X-2.0312 Y0.6751 Z2.2658 A0.0 B0.0
X-1.5312 Y0.0029 Z1.2866 A31.5177 B-50.502
X-1.0312 Y0.0009 Z1.7137 A23.1706 B-31.8583
X-0.5312 Y-0.0134 Z1.9281 A20.8923 B-16.3291
X-0.0312 Y-0.0384 Z1.9994 A20.8297 B-1.4475
X0.4688 Y-0.034 Z1.944 A21.3208 B13.6212
X0.9688 Y-0.0234 Z1.7495 A23.4627 B29.1978
X1.4688 Y-0.0147 Z1.3573 A30.4463 B47.5619
X1.9688 Y-0.0252 Z2.3641 A17.2026 B82.6563
X2.4688 Y0.6751 Z2.2658 A0.0 B0.0
X2.4688 Y1.1751 Z2.2658 A0.0 B0.0
X1.9688 Y-0.0261 Z2.5522 A28.0 B83.2039
X1.4688 Y-0.0069 Z1.3574 A60.2527 B47.6281
X0.9688 Y-0.0156 Z1.7496 A42.7042 B29.0587
X0.4688 Y-0.0198 Z1.9442 A37.7699 B13.3593
X-0.0312 Y-0.0177 Z1.9997 A36.4975 B-1.3487
X-0.5312 Y-0.01 Z1.9281 A37.8477 B-16.0362
X-1.0312 Y-0.0035 Z1.7137 A43.4121 B-31.7254
X-1.5312 Y-0.0018 Z1.2866 A66.0471 B-50.6728
X-2.0312 Y1.1751 Z2.2658 A0.0 B0.0
X-2.5312 Y1.1751 Z2.2658 A0.0 B0.0
X-2.5312 Y1.6751 Z2.2658 A0.0 B0.0
X-2.0312 Y1.6751 Z2.2658 A0.0 B0.0
X-1.5312 Y0.0037 Z2.8177 A36.4008 B-50.7924
X-1.0312 Y-0.002 Z1.7137 A77.8911 B-31.286
X-0.5312 Y-0.0057 Z1.9282 A60.4852 B-15.8228
X-0.0312 Y-0.0083 Z1.9997 A57.133 B-1.1983
X0.4688 Y-0.0087 Z1.9443 A59.7479 B13.4322
X0.9688 Y-0.0041 Z1.7497 A73.3457 B29.1013
X1.4688 Y-0.0276 Z2.8176 A37.0383 B47.525
X1.9688 Y-0.0262 Z2.8176 A37.0096 B83.4366
X2.4688 Y1.6751 Z2.2658 A0.0 B0.0
X2.4688 Y2.1751 Z2.2658 A0.0 B0.0
X1.9688 Y-0.0258 Z3.1407 A44.302 B83.5006
X1.4688 Y-0.0266 Z3.1407 A44.3164 B47.5717
X0.9688 Y-0.0268 Z3.1407 A44.3194 B29.0548
X0.4688 Y-0.0251 Z3.1407 A44.2878 B13.3105
X-0.0312 Y-0.0209 Z3.1408 A44.2117 B-1.2992
X-0.5312 Y-0.0139 Z3.1408 A44.0838 B-15.9017
X-1.0312 Y-0.0066 Z3.1408 A43.9516 B-31.7186
X-1.5312 Y0.0004 Z3.1408 A43.8226 B-50.8419
X-2.0312 Y2.1751 Z2.2658 A0.0 B0.0
X-2.5312 Y2.1751 Z2.2658 A0.0 B0.0
X-2.5312 Y2.6751 Z2.2658 A0.0 B0.0
X-2.0312 Y2.6751 Z2.2658 A0.0 B0.0
X-1.5312 Y-0.0017 Z3.5057 A49.7635 B-50.5422
X-1.0312 Y-0.0074 Z3.5057 A49.8564 B-31.5435
X-0.5312 Y-0.0139 Z3.5057 A49.963 B-15.9052
X-0.0312 Y-0.0192 Z3.5056 A50.0499 B-1.2576
X0.4688 Y-0.023 Z3.5056 A50.112 B13.3889
X0.9688 Y-0.0246 Z3.5056 A50.1387 B28.8806
X1.4688 Y-0.0254 Z3.5056 A50.1514 B47.4862
X1.9688 Y-0.0252 Z3.5056 A50.1482 B83.476
X2.4688 Y2.6751 Z2.2658 A0.0 B0.0
X2.4688 Y2.6751 Z2.2658 A0.0 B0.0
G0 X2.4688 Y2.6751 Z27.2657 A0.0 B0.0
G0 X0.0 Y0.0 Z0.0 A0.0 B0.0
G92 A0
M5
M30

[dmauch]

What version of the cnc tool kit are your using?

Dan Mauch

[MichaelGolden]

What version of the cnc tool kit are your using?

Dan Mauch

cnc-toolkit-4.34b

[dmauch]

I couldn't tell from the picture but are you using the toolkit machine config as XYZAB ? Shouldn't you be using XYZAC? or XYZBC?

It would be very helpful if you would post instructions on how you setup the toolkit?
This is repeat of my 5 axis video . But the G code was produced graciously by my friend in Powermill but I have tried to use the toolkit and the G code is really strange.
5axismilldrillengareave - YouTube
Dan

[MichaelGolden]

I couldn't tell from the picture but are you using the toolkit machine config as XYZAB ? Shouldn't you be using XYZAC? or XYZBC?

It would be very helpful if you would post instructions on how you setup the toolkit?
This is repeat of my 5 axis video . But the G code was produced graciously by my friend in Powermill but I have tried to use the toolkit and the G code is really strange.
5axismilldrillengareave - YouTube
Dan

I use a and b. I spent about a week of afternoons pulling my hair out trying to get the gcode to move the mill correctly. Some axis in mach 3 were turning backwards at first.

To start. The face of your tilting mounting plate looks about 4 inches from the pivot point. So I would start by drawing my part exactly that far away from the 0,0,0,0,0. And do it in a way that you can actually measure it by hand on the machine. By using some sort of reference point.

(The g code I just posted will not work for your machine.)

There's other ways to go about it but I think for beginning it makes the most sense, rather than fooling around with offsets. And that way you can step through the toolpaths one movement at a time to visualize what really needs to happen.

[MichaelGolden]

And here is the new servo system almost fully wired up. Very excited. Using all the recommended stuff from the yaskawa manual. 24v relay alarm stop. This is all running on 240v. I have a position and torque/speed control drive to see if it makes much of a difference. There has been quite the debate over the two.

[MichaelGolden]

https://instagram.com/p/zoHk5wAZ5s/

Short videos of the new setup here. Trying out camworks again. Having issues with the post processor not outputting the same gcode as in the simulations. Managed to hack together two roughing operations. Working on the finishing paths next.

[dmauch]

Hmm I thought that Camworks is only 3 axis. What happened to using the cnctoolkit?
Dan mauch

https://instagram.com/p/zoHk5wAZ5s/

Short videos of the new setup here. Trying out camworks again. Having issues with the post processor not outputting the same gcode as in the simulations. Managed to hack together two roughing operations. Working on the finishing paths next.

[MichaelGolden]

Hmm I thought that Camworks is only 3 axis. What happened to using the cnctoolkit?
Dan mauch

Cnctoolkit is nice but... No collision checking
I know there are so many cam packages to choose from. Best to test the water. What did your friend use to generate your code?

[dmauch]

He has access to Powermill where he works.
The problem is that most 5 axis CAM programs cost 5-10K . That is why I was hoping someone of the cnctoolkit forum would go ahead and improve it so that work better with trunnion type 5th axis. And to provide and explanation of setting it up.

Dan

Cnctoolkit is nice but... No collision checking
I know there are so many cam packages to choose from. Best to test the water. What did your friend use to generate your code?

[steve.edmshop]

Hi Dan,

I would imagine your machine doesn't have tracking orientation. Ask your mate with Powermill to generate a datum at your trunnion table pivot point relative to your XYZ setting point and use that datum to output the NC code.


Sent from my iPad using Tapatalk

[MichaelGolden]

He has access to Powermill where he works.
The problem is that most 5 axis CAM programs cost 5-10K . That is why I was hoping someone of the cnctoolkit forum would go ahead and improve it so that work better with trunnion type 5th axis. And to provide and explanation of setting it up.

Dan

Yeah, i know what you mean. Its just a real pain to get working right. Theres not much I can say aside from what the tutorials already provide.

Figure out the coordinate system so you're using inches. Set offsets to zero and draw your part in space where it would end up on the machine. And hope it doesnt crash. lol

[steve.edmshop]

@Michael,

With PowerMill you don't have to draw your part in space, you can program from 0,0,0 and then just give the NC datum (pivot datum) when posting the code.


Sent from my iPad using Tapatalk

[dmauch]

OOOPS! Steve, I think I did not make my self clear. There was no problem with my friend using Powermill. I measured the offsets and he incorporated them into his post processor. Power mill worked with no problem except for a couple lines that the post processor added so I have to delete them. But I don't want to have my friend do my tool paths as he is very busy at work. Additionally most 5 axis CAM programs cost $5-10K.
On the other hand, the Cnctoolkit and Gmax are free but it was designed to be used with a head mounted 4/5th axis. I have been on the toolkit forum asking if one of the gurus with Gmax and the toolkit if they would modify it so that it could seamlessly be used with a Trunnion type 4/5th axis. If someone would fix it, it would open up a whole new avenue of technology to the home shop machinist and to some small businesses. With some modifications those cheap 4/5th axis Chinese trunnion tables would solve the mechanical part and a 4 and 5 axis driver would be easy as a parallel port can support 5 axis machining. Mach3 and EMC both have 6 axis capabilities.
Dan

[billw999]

Hi Michael,

I am confused, you talk about using A & B in setting up cnctoolkit but your machine has a C axis.

The main problem I see with cnctoolkit is that it has no tool bit compensation, so you have
to take this into consideration and modify your model accordingly. Also the lack of G93 and
G94 implementation will make controlling the feed rate very difficult.

[sudheerv85]

i want sinumerik 828d 5axis (table table) processors for master cam x5

[MichaelGolden]

Hi Michael,

I am confused, you talk about using A & B in setting up cnctoolkit but your machine has a C axis.

The main problem I see with cnctoolkit is that it has no tool bit compensation, so you have
to take this into consideration and modify your model accordingly. Also the lack of G93 and
G94 implementation will make controlling the feed rate very difficult.

Yeah oops, what I meant was I use mach3 with A and B. I edit everything to match because when I started I didnt know what I was doing. In notepad with the gcode I have been clicking 'replace with' C with B.
So yes in reality its A and C. My bad.

And yes controlling the feedrate is very difficult. I broke an endmill on the first run because mach3 ramped up really fast near the very end of the toolpath even though I manually typed in all the 'C' axis moves too degrees/min.

But I found setting in mach3, the rotational diameters and choosing the option diameter controls feedrate really evened the speeds out. But now my rapids are slower.

[dmauch]

The low profile Chinese trunnion table4 that I have has a 5/1 ratio timing belt drive. It is pretty good and you could do some light machining on it. But it would be possible to add an idler gear between the driver pulley and the driven pulley and probably increase it to at least 10 to 1.
Dan Mauch


OOPS I just noticed this was an old posting.

QUOTE=Maglin;1407586]I think that .005mm accuracy might not be achievable with a worm gear drive. I would think it could on a belt drive with a lot of reduction like 5:1 to give you maximum holding torque. I also like the idea of duel closed loop servo system to ensure positional accuracy. LinuxCNC will definitely be better suited for control until Mach4 comes out.

Sent from my KFTHWI using Tapatalk[/QUOTE]

[MichaelGolden]

The low profile Chinese trunnion table4 that I have has a 5/1 ratio timing belt drive. It is pretty good and you could do some light machining on it. But it would be possible to add an idler gear between the driver pulley and the driven pulley and probably increase it to at least 10 to 1.
Dan Mauch


OOPS I just noticed this was an old posting.

QUOTE=Maglin;1407586]I think that .005mm accuracy might not be achievable with a worm gear drive. I would think it could on a belt drive with a lot of reduction like 5:1 to give you maximum holding torque. I also like the idea of duel closed loop servo system to ensure positional accuracy. LinuxCNC will definitely be better suited for control until Mach4 comes out.

Sent from my KFTHWI using Tapatalk

If anyone else is interested in the same setup I have pm me for details. I'm starting a list of interest and may be going ahead with a kit/instructions.

https://instagram.com/p/zti2IfgZwX/