[ZE...] Posted March 28, 2018 Share Posted March 28, 2018 Hey guys, long time listener, first time caller. Pretty low on the tier for cmm experience, so this question should be pretty easy for you guys I'm sure, I figure I'd give it a shot. I am trying to measure from the bottom of this slot, seen in the picture to the center of my base alignment (the thru hole), and I just cannot get the correct nominal reading. I have tried placing a space point, and looking for the smallest vector (if that's correct), but the numbers only read linearly as opposed to finding a peak. I've also tried the new nifty caliper measure with a circle on the cylinder (which is how the cutout is defined), to the center of the alignment as well as rotating it to the angle of the main cylinder/start angle thinking it had something to do with that, with no luck. So, that's where I'm at, thanks in advance. Dave Mecozzi | 03-27-2018 06:19 PM Link to comment Share on other sites More sharing options...
[ZE...] Posted March 28, 2018 Author Share Posted March 28, 2018 Do you have curve? If so you can create a curve and use Construct/Minimum Coordinate and it will give you the lowest point in the curve in what ever axis you want. Clarke Gilbert | 03-27-2018 06:23 PM | Link to comment Share on other sites More sharing options...
[ZE...] Posted March 28, 2018 Author Share Posted March 28, 2018 No, I don't have the curve option. Dave Mecozzi | 03-27-2018 06:28 PM | Link to comment Share on other sites More sharing options...
[ZE...] Posted March 28, 2018 Author Share Posted March 28, 2018 Sorry Dave, Picture really doesn't help understand how the points are being taken. Can you post a pic or drawing with the whole part in a couple of positions and supporting datums, including what you're using for planar axis? Owen Long | 03-27-2018 07:38 PM | Link to comment Share on other sites More sharing options...
[ZE...] Posted March 28, 2018 Author Share Posted March 28, 2018 Hoo boy puttin the paintshop skills to the test. Maybe I made it too confusing with all the lines, it is just a distance between the bottom of the slot (underlined in red) to the center of the hole my alignment is based on (which is a 3d line connecting both ends of the bore). The first picture is the slot cut into the cylinder, and the red dot of the point I'm trying to achieve, the second picture shows where the cylinder is inside the part, probe accessible from a slot cut opening approach in the direction of the black arrow, with my planar align being a plane to the right of my origin (the green line) and the third is just a cutaway view inside the part. I don't think I can post the entire part for privacy reasons, and maybe I just made it more confusing.. Dave Mecozzi | 03-27-2018 08:19 PM | Link to comment Share on other sites More sharing options...
[ZE...] Posted March 28, 2018 Author Share Posted March 28, 2018 Actually I ended up trying it the hard way, maybe answered my own question. I located the distance in solidworks, and created a point using an alignment perpendicular to the angle of the cylinder relative to base alignment. Would you think that would be an acceptable way of creating a depth point? Dave Mecozzi | 03-27-2018 08:23 PM | Link to comment Share on other sites More sharing options...
[ZE...] Posted March 28, 2018 Author Share Posted March 28, 2018 OK that's better, I think. You would think the granddaddy of all things computer (Microsoft) could put something better in to work with than paint but, then they wound't be able to charge you for the good stuff, kind of like Calypso and curve I guess...lol. Anyway back on topic. I'm making a lot of assumptions here on your experience and my interpretation so, it may not help at all. I may be wrong but, I don't think the engineer really cares where the bottom of the round woodruff key is in relation to the hole (your datum) as much as he might care where the bottom of the key is to the shaft cylinder that the key is cut into and will mate to but, it wouldn't surprise me if they dimensioned it that way. So, there are several ways it could be done and the way I would probably do it is to create a second alignment and use the bored/drilled shaft hole as origin and spatial and then take a point or points (to find center of it, which might best be done measuring it as a circle) in the bottom of the round key and then maybe measure your current datum hole again with the same second alignment and use a Cartesian distance to get the distance between the center of the hole and the keyway bottom point? Like I said, assumptions and maybe not good ones..lol Owen Long | 03-27-2018 09:40 PM | Link to comment Share on other sites More sharing options...
[ZE...] Posted March 29, 2018 Author Share Posted March 29, 2018 Hmm okay, I think I got what you mean, but I keep coming up with goofy numbers...maybe that is another add-on I need? "Microsoft True Numbers" haha. Do you think a form of my yellow reply above yours could work? I added your suggestion of using the bore as Spatial, and then placed the point based off of that alignment. Dave Mecozzi | 03-28-2018 03:00 PM | Link to comment Share on other sites More sharing options...
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