Yes, I do, my question was about the theoretical surface finish calculation, I don't expect the result to be exact. I didn't want to use a formula that was just an approximation if there was something more exact. We are milling these parts in a fairly small tolerance for surface roughness so it...
This seems like it would be an easy thing to find the answer for but after many hours of searching I cannot come up with it. I can easily calculate the cusp height for machining a surface with a ball endmill and a given stepover but I cannot find a formula for calculating the theoretical surface...
In turning I can select the part in Geometry -> MCS_Spindle -> Workpiece -> Specify Part and the Part Spun Outline gets created for me. I would like to do something similar in milling; the part that I am milling is cylindrical with radial grooves and many flats on the cylinder body, so the blank...
What I am looking for is - if I chuck a hollow cylinder in a horizontal lathe, how much force is required for a chuck jaw (the one at the 'top', that is 12:00 if viewed from either end of the cylinder's axis) to retain the cylinder? I know that coefficient of friction factors in to this, and I...
"Chucking seems a bit complex for simply lifting an object. Usually, some sort of rotational torque is imposed on the object, i.e., like a drill, is it not? Doesn't that usually dominate?"
Thanks for the reply...
There are two places that I can get information on the forces applied by the...
Please forgive me if my terminology is not correct, I'm here on this forum precisely because I am not well versed in this topic...
What I am looking for is - if I chuck a hollow cylinder in chuck mounted to the spindle of a horizontal lathe, how much force is required for a chuck jaw (that is...
Very cool! I actually forgot that AutoCAD can do 3D, I have seen it done and I have walked through a couple of tutorials but it's been a few years. I have never been denied an AutoCAD license, so if I can figure it out, that would work, thanks for looking at this and helping me see that I do...
My previous employer was a steam and gas turbine manufacturer/repairer, and I believe Tmoose is dead on, his explanation is the same that I heard while I worked there. And we did do Mag-particle Inspection there, as well as Xray inspection. The shafts were required to be demagnetized always...
As I said to Doug (above) "The calculation seems to break down once the small cylinder is translated up past the point of intersection with the edge of the large cylinder..." the spreadsheet will not give a result once the small cylinder goes high enough that the point of intersection is...
I can only get a CAD license early in the morning before the design engineers arrive as I said in my post to Doug...
No, cowski, this is the same problem, I thought it would be easier to describe as a cylinder, after all, the fillet edged of the pocket is a cylinder in fact and it will always...
Doug,
That is an amazing spreadsheet! I am often astounded by what people can do with Excel.
The calculation seems to break down once the small cylinder is translated up past the point of intersection with the edge of the large cylinder... I attached a screen shot of the one I am currently...
prex, seems like you understand this the best, it really is not simple at all. You can get in the ballpark figuring in a plane, but it is still pretty far off, like 1/2" or so depending upon how far up the larger cylinder the smaller one intersects...
This is a similar exposition...
Link
I am...
The parts that do this are imported from SolidWorks, I have attached a screen shot. I am working in NX8 and using the Manufacturing function. The only way I can get it back to the normal color is to switch to Part Navigator and uncheck the model but that means I have to regenerate all toolpaths...
that is in the ballpark but using the full radius as an offset gets me too far out; conversely, using the centerline of the small cylinder is not far enough out.
ultimately, a pocket gets milled, it's pretty much a 'spotface' for lack of a better term. this number that I am looking for is the...
No, they do not intersect, that is why I included the qualifier "the farthest point" and that is precisely what is making this so tough to figure out. Since the small cylinder intersects at an angle and the system will be aligned to to the small cylinder's axis. The result of that is as you move...
Hello all, I have a family of parts that typically has two cylinders which intersect; I am looking for the point that is farthest from the midpoint of the largest cylinder's axis...
The angle between the two cylinders is either 45° or 60°
One cylinder, let's call it the main cylinder, is...
John,
I attached a link to a shared jpg that shows the debug output. I can see in the debug output that MOM_probex is being called but what puzzles me is the status (Active, Inactive, User Defined) is being reported by mom_command_status despite my creating a variable for it called...
Hockeyguy,
I am also very new to NX so I might be way off on answering this, but I do know that if you stand on the surface for a moment, there usually will appear and ellipses ... click it and then you are presented with a submenu that you can choose the underlying objects from. As you mouse...
