Initially for the first cut, the milling is moved in 2 directions (i.e 1. In the direction of feed 2. In the direction opposite to depth of cut. So in the beginning the depth of cut is 1mm(say) and at the end the depth of cut is 0.5mm(say)). Then for the second cut the direction of feed is reversed and cutter moves in opposite direction with depth of cut same as the value of depth of cut at the beginning of the first cut (say 1mm).
Do you say that your machine during a face milling produce like a ramp milling?
I attach an image as an example.
What kind of machine do you have? Conventional, CNC, horizontal, vertical.
how old is the machine as if your intention is flat miling then bed wear or bearing play on head could be the cause if on the other hand like Daniel said if you are milling a ramp then it is different
Dear Daniel Martinez,
Thanks for your inputs.
In my case horizontal spindle CNC machine is used. Currently, we are studying high-to-low ramp cut (both forward and backward). I would like to know the reason for using such ramp cuts in face milling.
Good. The ramp milling help to reduce manufacturing time during machining of cavities. The ramp angle depends by the mill type tool and normally varies beteen 3° to 5°.
Another important reason is that time ago to make a cavitie people need two tools: 1) a drill to make the hole previous to introduce the mill tool, and 2) the millo tool to produce the cavitie.
Once again thanks for your efforts.
In my case we are not doing face milling to machine the cavities. Infact cavities are not present on the concerned surface. A 80 mm face milling cutter is used with wiper inserts for high to low ramp cut (both forward and backward), concavity is also created because the diameter is larger than the width of the face.
It would be helpful if you can suggest us some articles, research papers or any other material.
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