Engraving using axis substitution

[Roger]

I've been trying to do some engraving on a test piece in our Hass mill with the rotary using axis substitution. Everything looks good in verify. I want to do the engraving on the top, rotate 180 degrees and do it again. The NC code repeats the engraving on the top. I've tried transform by toolplane, and various other means, all with the same results.

 

I did this many years ago at another shop, but I need some help with this now. The machine is a Haas VF5, Mastercam version X6, using the generic Haas 4 axis post.

[Reko]

If you have the multi-axis seat, then multi-axis curve is much quicker and easier.

[CJep]

When using transform to reposition an axis substitution tool path you need to use translate form point to point.

You need to know the arc segment length.

You can use a formula L = (θ × π/180) × r to find it.

Another method to find the length would be to draw the arc and break it at the desired location, then analyze the arc segment.

The axis that is being substituted would use the length of the arc segment, assuming you're rotating around X, you would input that value for the Y transform.

 

http://www.mathsisfu...or-segment.html

 

Here's another formula I found with the link to an online calculator.

where:

C is the central angle of the arc in degrees

R is the radius of the arc

π is Pi, approximately 3.142

 

http://www.mathopenr.../arclength.html

[cherokeechief79]

wow that all sounds like a lot of work. cant he just draw it out straight and then use axis subsitution and wrap?

this is always easy for me. on another note if you use the "engraving" function to get artistic letters and axis substitute and wrap it works awesomely!

[htm01]

if you just need it 180 apart, roll the geometry around, then copy rotate 180 and unroll

[DavidSV]

Or just translate it by half the circumference.

[jorges]

Roger,

Many different ways to do this, if you're in a hurry and don't have time to figure it out and making a few parts just run your program at A0 then index it manually to A180 and re run program