DaveS777 Posted June 18, 2014 Posted June 18, 2014 Using AutoCad 2015. EXTREMELY new to it... Been going through help files, looking at various tutorials, and reading "Mastering AutoCad 2015" etc. but it all is a bit much. Trying to draw a wheel, fairly easy using the 3d cylinder tool and then the push/pull function. But, I would like to drill or set holes on the CIRCUMFERENCE of the circle or wheel, equal distant spacing, but going apart in a V or wedge shape. I got totally lost on doing this... How would one go about getting a V track onto the circumference of a wheel or round, circular 3d object?? I have included a 2d flat representation of what I am desiring; 'just' take it and wrap it around a circle.... Two helixes proper distance apart on the Circumference with proper markings or holes already drilled would create the desired object. Thanks muchly for how to or great tip advice.Wedge Pattern.dwg wedge Pattern 2 Circle.dwg Quote
DaveS777 Posted June 18, 2014 Author Posted June 18, 2014 Two jpg's of the above dwg's. I'm looking for a V or wedge shape on the circumference of a wheel or 3d circle. The helix would have to be TWO in on cw & other ccw so that they lined up... all of the markings are where the holes or pins would be placed. These are just examples of the idea. I can't actually show you what I need; since I don't know how to draw it... And I never was very good at drawing. Thanks! Quote
Dana W Posted June 19, 2014 Posted June 19, 2014 I don't know anything about 3D, but have you looked into the ARRAY command? It will let you set out objects, like circles, equidistant in a pattern, whether it be rectangular as in columns and rows or around a circle or arc, or even along an irregular path such as a spline or series of connected lines and arcs. Quote
steven-g Posted June 19, 2014 Posted June 19, 2014 Something like this. Maybe a pencil sketch would give a better idea and then scan it in or take a photo. wedge Pattern 2 Circle.dwg Quote
DaveS777 Posted June 19, 2014 Author Posted June 19, 2014 Yeh, I'm pouring over commands and looking at tutorials and reading.... so many commands, and when I try it - sometimes they don't seem to work cause I'm doing it wrong... Steven - how did you get the 'points' on the Helix to be vertical - or where the circumference would be if extruded? Did you change the orientation of the Work Plane?? Quote
steven-g Posted June 19, 2014 Posted June 19, 2014 Yup, click on the UCS symbol and then click on the grip for the Z axis and drag that grip to the end of the helix, now draw your circle. When I say the end of the helix I mean the lowest end at z=0. Type UCS followed by W to set the UCS back to normal, then use the arraypath command with the method = measure, align = yes and for the distance pick your second point (watch the command line for the prompts). Shout if you get stuck. Quote
DaveS777 Posted June 20, 2014 Author Posted June 20, 2014 Steven - we got circles around the helix; just they are going 'around' the circumference 'line' of the Helix; and not seeming to be on the surface or circumference of same... The circles seem to be going INTO the cylinder, by using the circle center point as the Helix line... I'm looking for a circle or point (a reference drilling spot) on the Helix; but at the Circumfernce. Not really sure it makes a difference if its just a point or reference. But a 'sideways' circle on the Helix - haven't tried the 'push/pull' yet; but not sure that would be correct. 1/8th diameter hole; 1/4" deep... Here's what we (my wife and I) have managed to stumble our ways... Circles on Cylinder with V helix PLAY with 20_10_2 _Z2.5.dwg Cylinder with V helix PLAY with 20_10_2 _Z2.5.dwg Quote
ReMark Posted June 20, 2014 Posted June 20, 2014 (edited) Looks like your circles are tilted as opposed to being straight up and down. My quick attempt. One more and it's time to go. Basically it is just a matter of getting your first circle oriented correctly. Well, that and arraying, extruding, exploding, subtracting, etc. JDM can probably explain it better than I can. I just fool around with this stuff for kicks. I like the challenge. Have fun. Edited June 20, 2014 by ReMark Quote
steven-g Posted June 20, 2014 Posted June 20, 2014 You have the circles not quite aligned. In the attached dwg I drew a line vertically at the centre of your cylinder, and then with the UCS set at world I drew from the end of the helix to a point perpendicular on the centre of the cylinder, then adjust the UCS so that Z points to the centre, and draw the small circle on the perimeter, that way it is lined up correctly, change the UCS back to world and then array the circle, from there you can use the thickness property. Circles on Cylinder with V helix PLAY with 20_10_2 _Z2.5a.dwg Quote
DaveS777 Posted June 21, 2014 Author Posted June 21, 2014 ReMark & Steven - THANKS so much for your efforts on helping and suggestions. The crux of course is the WCS & UCS. ReMark - how did you do the 'holes' so quick....? Haven't gotten to that part yet. Steven, thanks for your suggestion on the Zed axis. A couple of times we got that correct; but every time we tried to duplicate it - something was always messed up. Spent about the last 26 hours or so; over these two days - just trying to figure out this simple deal, which you guys do quite aptly. Appreciated your correcting my drawings - but I had to be able to do this... Purchased the "AutoCad 2014 for Dummies" today; which pointed out that rotating the World Cube just gives a view; and can make it hard to actually draw. The suggestion of going to the Visualize, View properties choice etc. finallly got me to be able to replicate. Thanks again. Now, to slowly continue on with developing more problems:) Mirrored Helix with cylinder.dwg Quote
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