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Hello. 
I would like to rough this pocket by ramping all the way down, in multiple stepovers, with a high feed face mill. I cant figure out which feature to use, I am using Mastercam 2021 2D/3D.

Thank you!

Andreas F

Validate

Red marked pocket.PNG

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I would just use contour set to ramp with a distance of whatever is recommended for your insert.

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I can't use contur because when I enable multiple passes, it will start with ramping down to full z depth in the first pass, and then move on to the next pass and ramp down to that in full z depth. I would like to mill the whole pocket step by step in z depth, doing all the passes by z depth order. 

(the mill is 40 mm and the pocket is 113 mm wide) 

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Just now, Validate said:

I can't use contur because when I enable multiple passes, it will start with ramping down to full z depth in the first pass, and then move on to the next pass and ramp down to that in full z depth. I would like to mill the whole pocket step by step in z depth, doing all the passes by z depth order. 

(the mill is 40 mm and the pocket is 113 mm wide) 

You can do this with contour, ramp by depth would be selected instead of by angle.

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I mean how do I make it cut the same Z in both passes at the same time before moving on to the next Z depth. Like showed in the picture, I don't want it to go full z depth in the first pass because of chip evacuation. 

Red marked pocket 1.PNG

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do the first depth then transform it in z

I did a part using transform to plunge rough then clean the walls in steps. It worked good

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37 minutes ago, Validate said:

I mean how do I make it cut the same Z in both passes at the same time before moving on to the next Z depth. Like showed in the picture, I don't want it to go full z depth in the first pass because of chip evacuation. 

Red marked pocket 1.PNG

You asking for a ramp that by it's very nature means ramp from top to bottom, but you want each depth ramped to a point? Then you will have to do what Leon said do a partial ramp and then transform it or make up chains at each depth and then use incremental on your linking settings and you can do it that way.

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1 hour ago, Validate said:

I mean how do I make it cut the same Z in both passes at the same time before moving on to the next Z depth. Like showed in the picture, I don't want it to go full z depth in the first pass because of chip evacuation. 

Red marked pocket 1.PNG

Ramp will not do this, however you can use profile ramp entry to simulate this behavior in 2021+.

Set profile ramp in lead in/lead out and use 2d contour, set only the entry in profile ramp.

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Thanks for the help! I managed to get it done by creating a toolpath that with 2 muliti passes went down 0.25 mm in Z, then copying it all the way down in the pocket. 10 min roughing time of a 500 (L)*113 (W) *30 (D) mm pocket.  

1.PNG

2.PNG

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On 4/2/2021 at 9:33 AM, Thee Byte™ said:

Here is an example file.

Profile Ramp Example.mcam

I liked the example, I even played with some of the options in "multi Passes" and selected "keep tool down" and I like hoe the tool behaves for the next ramp move and it minimized rapid movements. I got 2021 loaded but still on 2020.

 

Thanks for sharing

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Guest

You're welcome. 👍

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You can ramp down to a depth then do another Ramp from the original depth to the finish depth

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On 4/6/2021 at 3:52 PM, AMCNitro said:

You can ramp down to a depth then do another Ramp from the original depth to the finish depth

That's what I normally do as well. 👍

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On 4/6/2021 at 9:52 PM, AMCNitro said:

You can ramp down to a depth then do another Ramp from the original depth to the finish depth

How is this achieved without transforming the toolpath? I need 58 ramps down of 0.5 mm each. The whole face (both passes) needs to be cut, before moving on to the next depth.  Thanks

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2 hours ago, Thee Byte™ said:

 

Yes, I saw that file. I need it to ramp 100% of time when cutting, and I couldn't make it work with that method. Anyways it is done, so will be cutting a lot of parts now .. 🤪

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On 4/10/2021 at 5:15 AM, Validate said:

How is this achieved without transforming the toolpath? I need 58 ramps down of 0.5 mm each. The whole face (both passes) needs to be cut, before moving on to the next depth.  Thanks

You ramp from Z0.0 to Z-.5, on the next you go from Z-.5 to Z-1.0, next Z-1.0 to Z-1.5 , you keep going like that until you get to your final depth.

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