Thank you Tom for your detailed information!
I really have to get more serious with this machine and study the manual!
Just haven't done much burning, to really get "into" things!
I have made 9 electrodes, possibly I have to redress some....will see.
Customer has changed radius on bottom, from 2" to 1.096".....a good thing, I haven't started them early.
I will first rough out the center, 3/4" wide area, and not do the ends 30 deg.at all.
If somebody would like to model the shape and give a tool path in Bob CAD V 19, I will be more then happy to look at it, that would give me some hope in bobcad? and would upgrade perhaps? I think, it could be done by just machining it, after all, according to the sample part,
we can allow a 1/32R. in corner... drawback, tiny endmill!
The outside shape is the same as the dxf file shows, I will explain, how the opposite will look [Electrode] because that's how you would model it.
Think of a piece of key stock, 3/4 x 1.99 long, the ends taper at 30deg.[per side] to .219 radius center. Over the 3/4" wide, the entire length, put on a radius, convex, of 1.096, then on the vertical mill, swing your head 30 deg.and mill the ends with the face of the endmill across the ends over the 1.096R. .196" down [deep]
The total depth of the cavity is going to be .196" deep.
Naturally my electrode I have made .006" smaller per side for spark gap!
Can Rhino model this and have it machined in bobcad??
I played around ones in Rhino [demo] I think it's a good thing, ones you know how!...but all takes time, especially for the older folks!
thanks,
Konrad  |