Beginners ramping problem

[Anonymous]

Hello,

I'm currently making a round slot for o-ring. 

I used the 2d slot option, and selected ramping down. I want to go down 1.5mm, but it seems I cant get a grip on how to make it ramp down steeper than to use a whole round to do it. so the slot is 3mm deep, and now it ramps to 1.5mm, than goes another round on this hight. Then repeats on 3mm, making it 4 rounds around in total. I tried changing the ramp angle, but it dosen't do much.

Im sure there is a way to make it ramp down 1.5mm without going all the way around the Ø300mm slot.

Any suggestions on what I do wrong?

Thanks

[Ketherton21]

change  the max ramp stepdown

[seth.madore]

There are a couple of fields that contribute to how many trips around it takes.

Do you have Multiple Depths turned on? Turn those off.

For the Ramping field, change your Ramp Angle and Maximum Ramp Stepdown until you find values that work better for you

[Anonymous]

Thnaks, 

But then it uses one round to get down to 3mm, making the final round start at AP of 3mm, wich is too much for the 4mm mill..

I just want it to go steeper down to 1.5mm, then go one round, then steep down to 3mm, and final round..

Setting the ramp angle at 89 still makes it go 1 whole round down to 1.5mm

[seth.madore]

Can you share the file? Somewhere between default settings and where you have it now is going to be the sweet spot.

Ramping angle of 2 degrees is shallow, ramp of 89 is quite steep, technically almost a plunge.

Right click on the file in the Data Panel and select the "Share Public Link" option

[Anonymous]

Thanks for trying to help,

I also tried making it ramp a maximum of 0.2mm with a highfeed mill, but didn't find any good solutions for this either, it would do the same, 0.2mm down on first round, then a second round at constant 0.2.. 

Is there a way of making it go round and round, not more than 0.2mm each round, but still ramping all the way down to 3mm?

I am sorry to ask dumb questions, but im new to fusion, used gibbscam before..

See attached file

[seth.madore]

I'm not sure I'm entirely following what the issue is. If you want it to consinuously ramp down, set your Max StepDown to whatever value you desire and it will give you that.

Or, are you trying to quickly get to -1.5mm, take a pass, move down to -3.0, take another?

.2mm is awfully small, what's the machine and the material?

[Anonymous]

I was trying both ways actually, first one, the 0.2mm each round with a highfeed mill, made for small ap, but high speed. I was trying to make it go spiral downwards, 0.2mm each round, down to 3mm. but it ramped down 0.2 on the first round, then, did a full round to "clear" the 0.2mm pass, then proceeded to ramp down another round to 0.4mm, and then the cleaning round again, and so forth, making it double the ammount of rounds actually needed to do the operation.

The other option, was to quickly get down to 1.5, and then 3. I just saw the angle is overraided by the stepdown, so when putting in 3.5 mm max stepdown, and 2 multiple passes, seems to be the trick on this one. I will try it out now.

Machine is doosan850L material is 316L