C axis milling with X move
@Matwaw wrote:Hello guys, have a question.
Is it possible to mill that pocked what is inside cylinder?
I trying to do 3d pocked but it doesnt generate C axis moves. I have selected polar/C axis selection. There is any option to mill that on lathe?
I my mind i see it like. Tool holder is moving into this and come closer with X axis and start milling with C axis rotation.
Machine is on fanuc but generating it with haas ST30Y post it works. Any idea?:) Take care on Radius inside.
Starting new thread with same topic that was addressed in your other thread doesn't change rules.
First of all, file was already setup as Mill-Turn, it posts with Haas DS30SSY post and it will run on ST30Y because it is the same concept and same configuration.
I used tool you proposed in your first post, was that not good enough for you?
If you want to minimize fillets, you have to step down tool size and use pencil with rest machining, ...... you cannot machine sharp internal corners.
About the wrap function, it does not work on internal pocket because tool wants to come in from outside and thru the part.
You cannot use wrap and tool orientation at the same time because one cancels the other, they have different function.
In tool orientation, C axis is clamped at angle determined by tool orientation and you can perform 3D machining withing tool access range while driving XYZ axis.
In wrap function, tool path is wrapped around chosen diameter, tool is aimed at model center of rotation, X axis is driven to wrap diameter then CYZ axis perform pocket or contour tool path.
Finally, polar mode only works in G17 plane (XY), you can only perform pocket and contour tool paths on single or multiple depths in Z axis on face of the part.
Here is that file again in case you missed it, now you can finish bringing those fillets down to some acceptable value.
One small correction, I was checking setup and changed X axis reference to different sketch line.
First pocket should start at C180. as in last file I uploaded to your original thread.
So here is corrected file with posted NC code.
Let's go back to some fundamental rules of how things work.
In this project, all tool paths are done using "tool orientation", in this mode tool is lined up with edge of pocket, surface or sketch line. I used sketch line, C axis is indexed in position to correspond to angle at which that line relates to C0.
C axis is then locked and tool is driven in X axis to position of first pass by ramp or plunge cut, XYZ cuts are performed until first roughing level is done then tool is moved in X axis for next pass and process repeats until it is done.
The reason why tool orientation must be used is the fact that "Wrap" does not work on the inside surface, look back at the picture of tool entering from outside and thru the part.
If that worked so that tool enters from inside the part, you would be able to use Wrap feature and CXZ cutting motions.
It takes Wrap function to make cuts using CXZ axis. If those pockets were on the outside of ring instead, you would be able to use Wrap function and code could run on machine that has C axis and no Y axis.
Tool orientation and Wrap cannot be used at the same time because one cancels the other, they have opposite function, one locks the C axis and the other drives it to produce cut.
If you were able to force tool entry from inside the part, you would only be able to machine floor of the pocket and leave radial stock, then use tool orientation to finish walls.
Below is sample of Scallop tool path on part inside detail that can run in CXZ mode but the difference is that I did not have to use tool orientation because detail is already in sink with tool orientation, C axis is left unlocked and tool path can run on machine not having Y axis.
I cannot do this on your part because defining pocket to cut using scallop requires use of tool orientation, which will lock C axis and as a result Y axis must exist to make a cut.
If this worked on your part, you could use multi levels scallop to rough and finish pocket,..... but it does not.
Unless I missed something, bottom line is, you need machine with Y axis for your job or software that can achieve what is currently not possible to achieve in Fusion.
@Anonymous wrote:In wrap function, tool path is wrapped around chosen diameter, tool is aimed at model center of rotation, X axis is driven to wrap diameter then CYZ axis perform pocket or contour tool path.
Agh,...... looking back at what I wrote, not correct .......
It should state that cuts are performed using YZ or CZ axis, in G19 plane.
So, with machine only having C axis, you are limited to what you can do in combination with how tool path strategies work, as picture shows, you cannot do that on the internal surface.