haas program question

[cncsdr]

how would i program a cone 3inches at top 1.7 at base angle 35degrees

[Geof]

Lathe or mill?

[cncsdr]

mill vf-2

[Geof]

I wondered; lathe is fairly simple but mill is not. It is beyond my present ability and I am interested to see what is suggested because I have in mind some parts that will need it.

[psychomill]

3.0" at top, .... 1.7 at the base,.... 35deg angle.

So you have an upside cone? Is there a plate at the base? Basically, is it just a cone, or is there more to this part?

If its just a cone, then its a cake walk. You can do it on a rotary table (if you have one), or you could stand it up with the small end up and cut it in 3D. Which in reality, you don't even need full 3D, you can cut the part in 2-1/2 axis (G2 or G3 arc moves with an XZ or YZ stepover).

[miljnor]

is it the math your having problems with or the actual programing?

Because programing the, part lets say from the top down, (like psychomill said "small end up") is just integrals from a 90 degree triangle, with the top (or smaller angle) of 35deg, with with every step over calculated by how far in the Z direction you go (trig it out) this is how much the radius of you circular move will change for every z step.

I have calcualtors for this, but in a pinch I could give you all the formula. I am sure someone with a higher order frontal lobe could probably give these things to you quicker. afterall its been about ..... well a few years for me!

[Brian J]

Or even nastier yet if you have Haas Macro let the machine do the math and you can set the step down however you like by just changing some variables.

[Kool Parts]

cncsdr,
Is this the shape you are looking for. Allways a good place to start!
Gary

[Kool Parts]

If so it would go something like this. There are several more pages but you get the idea.
Gary

[miljnor]

or if you wanted to get trick you could do a downward spiraling helix! Have fun programing it though if you don't have a cad/cam system.

[Geof]

Originally Posted by miljnor or if you wanted to get trick you could do a downward spiraling helix! Have fun programing it though if you don't have a cad/cam system.

This is what I am waiting for someone to post; but not the cad/cam version a generalised macro routine is what I want. Enter top diameter, bottom diameter, height, pitch of helix - push button.

[miljnor]

not asking much are you! I see what i can do but it will take me awhile. Hopefully someone beats me to it (as I am pretty slow in the macro coding) but I can do it..

your not in a hurry are you? tired