INDEXING IDIOT

[Threept82]

Hi Guys

I've done this before and I don’t know how.

I have a model that I need to do some holes around the o.d. on a indexer. On the model some of the holes are as arcs and some are as splines. I drew lines from origin to ctr of arcs in3d plane to get my index planes but I can't convert

splines to arcs to draw the rest of the lines. I

put the file on the ftp site in MC9_files folder.

The file name is threept82.mc9

Any and all help would be appreciated. I don’t do

a lot of index work and now I have about a dozen

jobs. Thanks.

[crazy^millman]

What I do is create circle using the spline. I do this by setting my Cplane to 3d. I then create the arc using 3 points on the spline. Then from there just like any other indexer program. I will give this tip if oyu are having problems getting the cplane the way you want make a surface in the circle then use that as the enity for picking your cplnae to set the rotation angle in the post for the indexer. (to create a surface in a circle I use flat bounday to do this)

 

HTH

[Threept82]

Crazy^Millman

Thanks. I'll try that. That surface idea is

awesome. I take it your an old hand at MC (not

meaning old .... old)

[DavidB]

Also try Modify/Break/Spl to arcs.

If you still have some splines create point Along ent.Select spline and create 4 points.This will look like only 3 because it puts one at the start and end of spline.Then create arc 3points in 3d C/plane,delete all splines.Selecting an arc should set the C/plane.Selecting the arcs in the toolpath will set the T/plane for indexing.

HTH Good Luck

[Threept82]

quote:

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Also try Modify/Break/Spl to arcs.

---

I could not spl to arcs because splines are not flat or something like that MC said sorry no can do.

[Fig sign]

Select control plane by entity :end point of spline ,mid point ,end point

select depth

create arc-> circle 3points->end point of spline ,mid point ,end point

HTH

[jplecan]

If your model includes the cylindrical surface of the hole and you know the indexing angle, what I do is set Cplane,rotate to that angle then create curves, slice from the cylindrical surface, which

gives you two lines at the walls of your hole. Flip the cplane (Y+up?) 90 deg so you can offset one of the lines by half the hole size, then flip the cplane again (X+up?) 90 degrees and use the endpoint of that line for the center of your hole.

[TheePres]

ThreePt82,

If all your going to do is drill, all you would need is centerpoint and normal of arc..true??

 

For this use HoleAxis chook found in FTP site.

Change settings to save axis, distance above=0,

then just create point at end of created axis line in 3-d plane.

[jplecan]

TheePres,

I like that chook, thanks for the tip

Jim