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side feature will not finish the side wall

Anonymous

side feature will not finish the side wall

Anonymous
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I’m trying to  a under I’ve tried z level and did not get the results I want. I started using side feature and it is roughing fine but only doing one pass on the bottom rather than several ones to finish the side from the top down. I have check the box that says finish wall. i have attached the file right now it is feature  side 42

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9 Respuestas
Respuestas (9)

Anonymous
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I took a quick look at your part and it looks relatively easy. The first problem I see is in the pocketing you have only left .0027 which is pretty small for a finish pass. Especially when using a 1" end mill for roughing. You might consider stating with the 1" and stepping down to something closer to the inside radius of where the holes are. Next problem on the pocket would be the step-over, with it set at .625 it leaves a piece in the center to be cut on the final pass if you change this to .5 it eliminates the problem If you look at your part it is cutting off the rounded areas for the holes so they are misshaped. As far as that side goes it appears you are trying to cut the radius in the bottom this can be done in several ways. you can do it with a side mill operation using a corner radius end mill. The other method would be to surface mill it but may take a little longer. You will need to surface mill the areas outside radius though. If surface milling you will need to pick both the side and the curved bottom and set a top height so that the machining starts below the tabs for the holes as well as an end point. It will also help to pick the bottom surface which will help to blend everything together. If you can get an insert similar to the one I see in your program with the right radius on it it should work really well.

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Anonymous
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I don't really care about the step over in the pocket, but I fix that I really just want to know how to cut the side and yes, I have tried the side feature and have no luck. also, I have tried z level with the undercut box check but that comes with a whole bunch of other problems like taking to long, hitting the part cutting surfaces I don't want cut. I would like to use side milling better yet would be to cut the walls with a reg end mill and just cut the undercut with a side mill. ideally not run down the whole length of the surface 

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Anonymous
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to do that you would need a radius end mill and have your curve below the tabs for the holes. As long as the shank of the end mill can clear the tabs and the diameter is small enough for your inside corners it should work. You will probably need to add plunge and retract points otherwise it will inevitably plunge into one of the tabs and cut it off.

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Anonymous
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Screenshot (59).png

 

These are the results with side feature. ya I thought this should work just fine too but I'm only getting it to finish the radius on the bottom and no the wall

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Anonymous
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Okay I see what is going on let me try a few things and I will get back to you. It may be tomorrow morning though. in the mean time you can play with the different settings under the specific tools in the feature. I am pretty sure there is something there that will let you do what you are tying to do. It seams so simple that you could hand program it easier than getting FeatureCam to understand what you are doing. sometimes that's the way it is with this program though.

Anonymous
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Solución aceptada

Okay after playing around a little I think I have come up with a solution. First do a pocket to the depth of the tabs and cut them out of the way. Then cut a second pocket that encompasses the area inside the tabs with a finish bottom. Do these as separate cuts it will give you better results on the tabs. From there do the sides as you were doing it but use lighter radial cuts on the roughing passes at a higher feed rate you can remove the same amount of material just as fast or faster and it will be easier on your cutter. Under strategy tab I turned off the minimize tool retract and leaving climb cut, rough pass, Depth first, rough cutter comp, finish bottom, and ramp from top on (checked). I left the step overs as is but increased the RPM to 2000 aluminum cuts really well at surface speeds between 900 and 1200 sfm. Most of the time I program in sfm rather than rpms so I don't have to spend all day doing calculations. you could easily push this higher if your machine can handle it. I have a daytron that I run 6mm cutters in aluminum at 50,000rpm all day every day which is way over the recommended sfm but aluminum loves to be cut when you get the chip right. with that in mind it is a matter of your cutters, holders and machine asto what you can run at. I changed the finish allowance to .01" with a .25 Z axis rough increment. I think that was everything hope it helps good luck. If it works please accept as solution

Anonymous
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thanks for the reply....any way I could have the file that you played with? so I can take a look.

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Anonymous
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Shoot I knew I should have saved it and sent it. I will re download and make the changes so you can see them. sorry about that give me a few minutes.

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Anonymous
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okay I have it for you it isn't complete but should give you the idea.

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