Taper hole(4-Axis)

[jbelle7435]

Hey,

 

For some reason when I:

 

1. Toolpaths-->4-Axis

2. Chain select [The Center Thread Point, The Top Outer Ring, The Bottom Inner ring]

3. Select Ok and Ok to my parameters

4. It says "You have not chained a thread point nor enter a lead distance ....?

5. Then it still works with the Taper

6. except it does this extra loop that I did not ask for ?? 1st it does CW and then it goes CCW and finishes off ????

7. And why won't it let me reverse direction for the chain when I am chaining my lines...?

 

6 and 7 are my issue right now.

 

PS. When I did spit out the NC file is there a way to shorten those X Y and U V coordinates if I just have 1 circle with a start point and end point even though I am doing a taper or that is how it is for four axis?

TAPER01.MCX

[jbelle7435]

now I think about it. Maybe that extra chain is occuring because I selected it third but then how do I combine the two holes into one chain for one revolution only hmm??

[Del.]

set sync to " By Entity" you have it set at none

[jbelle7435]

set sync to " By Entity" you have it set at none

 

hmmm I started tinkering with that...I did notice that earlier in a thread of mine or not ..

 

Prior to selecting each line I set the "By entity" and nothing has changed...

[Del.]

Jbelle, forget that auto shi* and set it to left or right, forget setting it to computer and set it to control. get rid of the branch lines from connecting top and bottom, BREAK THE ARCS AT 180 DEGREES MANUALLY, select 4 axis,chain, select the bottom thread point, chain the bottom circle,chain the top circle only, set your parameters and if part is sitting on table set xy height at 0, uv height at top of part.always use sync. Use by entity when you have same number of entities in top and bottom, use branch points when top and bottom must be connected so wire knows how to syncronize them.

[jbelle7435]

Jbelle, forget that auto shi* and set it to left or right, forget setting it to computer and set it to control. get rid of the branch lines from connecting top and bottom, BREAK THE ARCS AT 180 DEGREES MANUALLY, select 4 axis,chain, select the bottom thread point, chain the bottom circle,chain the top circle only, set your parameters and if part is sitting on table set xy height at 0, uv height at top of part.always use sync. Use by entity when you have same number of entities in top and bottom, use branch points when top and bottom must be connected so wire knows how to syncronize them.

 

I am sure I followed you. When I run it, the wire travels from the center to the outside then comes around CCW to that same point thiniking its going back to the original center point but then goes back CW back to that point then finishes off? Is this normal for tapering holes doing that extra reverse circle? or is it supposed to travel once around and thats it?

[Del.]

If you have it set for 2 passes and are using reverse then it would be ok or are you saying it is NOT going back to thread point for second pass?

[jbelle7435]

If you have it set for 2 passes and are using reverse then it would be ok.

 

Maybe I missing something. See the attached.

 

I have the sync mode "by entity" for all (chain wire point 1 and chain 2 and 3 which are the bottom and top circles)

 

BTW, thanks for all your help.

[Del.]

Jbelle, Look at this as an example of a 4 axis path taking 2 burns with a reverse pass.

4AXISEXAMPLE.MCX

[jbelle7435]

Jbelle, Look at this as an example of a 4 axis path taking 2 burns with a reverse pass.

 

Note: When I opened it was missing the power library but I dont' think that will have any affect. I notcied the 2 burns with a reverse pass.

 

When you are WEDM a tapered hole is that normal with a "path taking 2 burns with a reverse pass" because it seems I can not control these actions? That's the main thing I am trying to figure out if that is normal and if so then its fine but if not then I want to figure how to do one circular pass.

 

Its like I am not asking for a reverse pass but it does it anyways???

[Del.]

post your newest file again on here

[jbelle7435]

one sec

 

see attached. I see one pass and no reverse but still does what it wants without me telling otherwise...

 

I am just trying to figure how far or close I am to what I want. Center to circle and then one circular pass at the tapered angle(Top and Bottom) and back to the center!!

TAPER02.MCX

[Del.]

its saying i dont have permission to view it

 

 

i got it

[Del.]

Cant help anymore today. Computer going crazy.

[jbelle7435]

no prob. monday it is . THANKS

 

I will get this tapered down if it kills me and maybe Del ...

[jbelle7435]

I think I got what I was looking for....

 

1. Setup a new file

2. Added bottom circle and upper larger circle

3. Set my thread point at center of lower circle

4. Tool path--4 Axis-->Chain Selected the #1 Thread point, #2 Lower circle #3 Upper Circle in that order-->Check Mark-->Check Mark without any changes and wallah. I tested it and one wrap around. I wonder why it was going all crazy on me yesterday. I will attempt the same thing with a model from inventor because thats my goal! Not to just draw from scratch. Worst case is if I have to then thats life I guess but it should be easier than that with all the models I want to use in the WEDM!

 

extra:

What I noticed in the NC code is it does not make this taper with the G02/G03 commands. Just got linear movement on the top and bottom. I wonder is there away to shorten all those point unless that would be make a polygon instead that I don't want. If not then I let the machine do the talking with the code...

TAPER03.MCX

[Del.]

I noticed on your previous files you had the same diameter holes at top and bottom. I'm not opening your files today as it caused problems on my computer. Note ALWAYS MANUALLY BREAK YOUR ARCS AT 180 DEGREES. iF NOT i HAVE FOUND IT POST OUT WRONG U and V but looks fine on backplot. Always use Direct 4 axis instead of 4 axis taper and it will be smoother on your code. Direct 4 axis will not work with splines though.

[jbelle7435]

This is my file with the loaded .STP with a simple 5 degree taper. But it says I exceeded my angle limits and even when it does work it goes around once but the wire goes crazy and def would not work in the machine. It says my max. taper is 30 degree and I am at 5??? Wonder what else I am missing to fix this..

TAPER_04.MCX

[jbelle7435]

I noticed on your previous files you had the same diameter holes at top and bottom. I'm not opening your files today as it caused problems on my computer. Note ALWAYS MANUALLY BREAK YOUR ARCS AT 180 DEGREES. iF NOT i HAVE FOUND IT POST OUT WRONG U and V but looks fine on backplot. Always use Direct 4 axis instead of 4 axis taper and it will be smoother on your code. Direct 4 axis will not work with splines though.

 

That is fine I don't want to break your comp! There was a 1 degree taper I bet. Hard to notice if the holes have different diameters. I will do this manual break to help me. I saw the Direct 4 axis. Will check that out.

[jbelle7435]

That is fine I don't want to break your comp! There was a 1 degree taper I bet. Hard to notice if the holes have different diameters. I will do this manual break to help me. I saw the Direct 4 axis. Will check that out.

 

DAMN!! I did the Direct 4-axis on the simple drawn circle and damn it shortened that code and used the G02 command woot. I was thinking it was there but you opened up a nice door for that one

[Del.]

Go into your mastercam documentation and it will answer a lot of your questions and tell you step by step.

[jbelle7435]

Go into your mastercam documentation and it will answer a lot of your questions and tell you step by step.

yeah now getting tapering to work in CAM I might got but now tapering on the WEDM Machine is tricky. I am missing info to get the back plot in our WEDM(Mits 90HA). 1st I have to get the MC working and then I still have to get the WEDM working as well.