5 axis project

[pip]

Possibly only a 4 axis project.

I have an "A axis" and a "C axis". I have a model of a female form, from the neck to the waist. I need to cut this with my A axis swung at 30deg, and basically only use my Y and Z axis while turning the part with the C axis. I hope that made sens. All the paths I have tried up till now want to keep the tool axis tied to the surface norms, so the machine keeps using the x axis aswell. I need the X axis locked to the centre of the model. The problem is, when the machine cuts the spine of the woman it is like a valley and the tool keeps to the surface normals, and therby gougeing the other side of the valley and breaking the tool. An help apreciated. This is only a project, and if I get the right toolpath sorted I will post a picture of the finished part. Mcam X2 Mr2 SP1 Mill level 3

[Don S at Barefoot CNC South]

Try posting it as 4 axis with the proper config.

[crazy^millman]

Try curve using point as the control and make the point the center of the rotary.

 

HTH

[Travis_Buchanan]

Create a helix around your model with the helix height being your step-over amount for surfacing. Do a curve 5-axis using this helix as the curve, use your surfaces as tip control, and vector the tool to a center point inside the helix (as Crazy-Millman suggested). Use axis limits to lock any axis on any angle you choose.

[Dan@home]

Travis, how would you do a helix on, or around a model.

[crazy^millman]

Go to right view and draw the helix and done.

[Dan@home]

My mistake. I thought he meant on the model itself.

[cadcam]

Daniel you work for Jerry? if so Say Hi to Jerry for me.

[pip]

I will have another try later today. Thanks for suggestions

[Dan@home]

Cadcam, yes I do and I will. Maybe I'll have a chance to meet you in the near future.

[cadcam]

Thank you Daniel. And look forward to it meeting you to.

[Flycut]

Hey Pip.

Are you allowed to share that file?

[pip]

Flycut, the answer is yes, and when I get a chance I will place it on the FTP. I am still have problems with the toolpath.

[JDowe]

In rotary 4th axis toolpath if you check "use center point" it will keep the tool axis pointed at the center of rotation

[Flycut]

BUMP

 

Hey Pip, how did this project turn out?

Did you get a chance to put the file on the FTP site?

[DaveR]

Hey PIP, would love to see some pictures and....have a crack at that file too

 

 

Dave

[Jimmy Wakeford from Barefoot CNC]

Did you use rotary 4ax? It does great with stuff like that. (If you need the head tilted there's a bit of a trick)

[pip]

I need the head tilted, that is my problem.

On the other machine it wouldn't be a problem.

What's the trick to making the head tilt.

I'm actualy tilting the table.

[pip]

I will place the file on the FTP tomorrow.

[Trevor Bailey]

if its a 4th set up, use the new style 5ax - parallel to curve. have the curve drawn, (that will be your single edge), in the right view and pick your drive surfaces. use "titled with an angle", select the desired axis(Z) to be tilted about. this works pretty well, especially with the spiral option.

[Katie Wakeford from Barefoot CNC]

If your using rotary 4ax with a ball cutter you can pre-tilt the 5th axis and set the X G54 to the center of ball.

[pip]

The file is in MCX2 folder called "3d-test"

[Flycut]

Stuck in stone ages here.

Someone willing to save that as MC9 for me?

[jagg2499]

mail Flycut

[Flycut]

Thank you sir.