WhoCanDo Posted January 13 Share Posted January 13 Hi, I need to mill out a curved slot like this. It's a vertical pipe with a hole drill horizontally and the milled horizontally down and around to the far side. I can make the nurbs curve, but I can't extrude it so that it can be subtracted from the pipe solid. Quote Link to comment
VIRTUALENVIRONS Posted January 13 Share Posted January 13 Is this something like what you want. If yes, can help later on in the morning. Quote Link to comment
VIRTUALENVIRONS Posted January 13 Share Posted January 13 Realized I did this with a Ball end. This person has square edges. Quote Link to comment
WhoCanDo Posted January 13 Author Share Posted January 13 The square edge one is exactly what I would like to do. How did you do it please ? Quote Link to comment
VIRTUALENVIRONS Posted January 14 Share Posted January 14 Late here tonight. I will do a short tutorial tomorrow if that is OK. regards....Paul 1 Quote Link to comment
WhoCanDo Posted January 14 Author Share Posted January 14 No problem. Thankyou again. Quote Link to comment
VIRTUALENVIRONS Posted January 14 Share Posted January 14 HI WhoCanDo, There are a number of ways to go about this. I chose a method that could serve you better in the future if this is the type of work you do. I hope this is what you want. Quote Link to comment
WhoCanDo Posted January 19 Author Share Posted January 19 Nice one VE I can use this for my next development. However, for this one, when you fillet the top, the center of the circle is not the center of the pipe. If I rotate the development to align the center of the circle to the center of the pipe centerline, the side of the circle is not perpendicular to the pipe center plane. If I rotate the development, the left side is not perpendicular to the centerline plane. Therefore, I ended up working from basics. I drew a circle on the centerline in the front view and extruded it. If I subtract solids at this point, I will have a hole in the wall. But before subtracting surfaces, I duplicated it, rotated it, and moved it downward - 200 times in a 180° sweep. Painful if I did this manually, so I made a macro. Not fancy, but cheap. procedure Fetch; var i : integer; pX, pY, D, R : real; h : handle; begin pX := -1228.91; pY := 103.72; { Top view pipe centerline } R := 0.9; { Rotation angle } D := -0.0575; { Drop distance } for i := 1 to 200 do begin h := LSActLayer; Duplicate (0, 0); RotatePoint (pX, pY, R); h := LSActLayer; Move3DObj (h, 0, 0, D); end; end; run (Fetch); I then added the solids. Duplicating this solid, rotating it 180° and then subtracting the two solids from the tube gave the result I needed. Thanks for showing me some new methods of creating objects using tools that I wouldn't have thought of. It was a very challenging model. 2 Quote Link to comment
VIRTUALENVIRONS Posted January 19 Share Posted January 19 Great stuff, glad you worked it out. I think I understand now what you wanted. I should have thought of that before, in another life I worked in fabrication. I redid this just for posterity, but in this video I included the cutting tool shape. If this is correct there is a simple way to create the correct curve pattern. But as you have what you want and know how to do it, stick with that. regards... 1 Quote Link to comment
VIRTUALENVIRONS Posted January 19 Share Posted January 19 (edited) @bcd. That was my first thought also, but was not sure that the sweep cut was flat across both sides so went to more complex method. It may work though, not sure. Edited January 19 by VIRTUALENVIRONS Quote Link to comment
VIRTUALENVIRONS Posted January 19 Share Posted January 19 (edited) As I understand it, WhoCanDo wanted curves that looked like image 1, where sweep as I did it or my original method produced curves that look like image 2. In image 1, the red line in perpendicular to the last tangent. Image 1 would be the natural cut of the CNC tool.......I think. Edited January 19 by VIRTUALENVIRONS Quote Link to comment
WhoCanDo Posted January 19 Author Share Posted January 19 I'm seeing a lot of good ideas coming through here. I started with the sweep but failed. That doesn't mean that I got the setup right though LOL. Just to confirm. The split-pin that is protruding, is press fitted into the bolt. A compression spring is extending from the top of the bolt (not shown). When the bolt is turned 180°+, the split-pin is to slide along the horizontally cut solid subtraction so that the spring is tightened by half a turn. That is why it is so important that the sides of the slot are all horizontal as it goes. Even though I have a solution, I'm going to have a go at some of the ideas above so I can experience the tools and methods. 3 Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.