I want to make the threads of the top part and the bottom part fit together. It would make sense to have most of the settings the same, but there has to be something different so it's not exactly the same thread.
You get maj dia. =15.2 on the internal thread (nut) so it's max = 15.2
then the maj. dia. on the external thread (screw) should be smaller than 15.2
while min. dia = 14.5 is the max on external thread (screw) so the min. dia. on the internal thread (nut) should be greater than 14.5
the smaller or greater values are the tol you decide for this thread in order there is a gap between them so they can screw together
they both have the same pitch diameter but diff. major and minor diameters
and please read this for the maj. and min diameters tolerances
Is there a way to check if they fit together other than 3d printing both parts and trying it?
Thread was invented hundred yrs ago and proved working over the yrs
If you model it right, it should work. What's your concern?
I'm sure the model for the threads is correct. I just wanted to make sure I followed it correctly. Also I made the threads by measuring them with a caliper. I don't know the official type of threads I used.
I don't know how I would use that chart you posted because of how I created the threads. I don't fully understand how the official names of threads are created.
How you measure thread with caliper?
Well seeing that you asked that question. Probably incorrectly.
I just measured a section of the part without threads to get the min diameter and I measured a section with threads to get the maj diameter. Then I measured the space between threads for the pitch.
Please answer the questiosn:
1) is this a standard or custom thread?
2)If standard thread, what size?
It's a custom thread.
Then how you built your thread? I mean what is the maj and min of the thread?
Did you try interference detection? Also, I don't see any threads on the "top" part
I haven't made the threads for the top yet.
Did you try interference detection
it's not going to work since there needs a gap between the male/female gap while "interference detection" won't let you know the inteterences if the threads on both male/female just touch each other
If there is no interference, they should work if there is coincidence interference. After checking and eliminating interference double check with the coincidence option.
Would you like to learn how to model these parts correctly?
Is there a reason that your sketches are not fully defined?
Is there a reason that you have 5 surface bodies and 2 solid bodies in Bottom.sldprt?
Is there a reason that you have 2 solid bodies in Top.sldprt?
It would be nice to know how to model these parts correctly. After I finish this and turn it in I likely won't touch these parts again for a while. I'll be busy with other projects for school.
I didn't know until recently that fully defining sketches is a must. I never lost points in my grade for under defined sketches. The entire assembly of the pen is due on the 17th and I haven't even started my drawings yet. I want to make sure I finish the things that will affect my grade first. If I were to turn this is with my portfolio for a job application I'll go back and fully define all the sketches. Also I'm only turning in the drawings for school.
To answer all the rest of those questions. I just make the parts in any way I know how. Then I learn what's practical and what isn't from trial and error and comments on the forums.
Let me know when you are ready to learn SolidWorks (apparently your instructor didn't really teach you anything - except how to develop bad habits, that in my experience will be hard to break).
I was going to walk you through step-by-step how to properly do this design, but it doesn't sound like you are ready to commit the time to learn how to do it properly.
Post back when you are ready to learn what you should have learned in the class (beginning on the first day). Whatever you do - don't let any employer see this work.
It's not critical at this point while building simple model; however, later on it'd get you out of trouble when you build more complicated model with fully constrained sketches. so it's good practice to have all sketches fully constrained
The rest of the model is as shaky as the sketches.
You are a student correct. If so are there not classes that you need to take that would cover this. Know I had to take them.
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