Thread-Tapping Problem on MEP (SW)

This is a problem that I have never been able to solve until now.

Put a screw in a tapped hole and make a cut; As I extract the screw from the cut, we have a correct representation of a screw in a tapped hole (on the left on the attached image). So far, so good.

But as soon as I also have to cut the screw, the thread and the thread are confused, the hatching overlaps, in short it's nonsense from a technical drawing point of view. The screw no longer dominates the tapped hole. (on the right on the attached image).

Does anyone have a simple and elegant way to deal with the problem? Or do you have to do long and evasive manipulations to hide lines, erase hatching and redo everything?

I specify that it is on SolidWorks.

Thanks in advance


filetage_taraudage.jpg

Hello

not in an elegant way as long as you use the representation (annotation)

I would say that if it's for a screw you should get better at making the screw thread and removing the thread in the thread

well a lot of work for representation.

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Apart from the hack  I don't see...

 

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The representation of the hatching on the image on the right is correct because the hatching goes to the strong lines never the fine lines, so there is nothing at all to do for my part

 

Mathieu

Good luck anyway

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Hello

It seems to me that in your image on the right the male part has no thread. So that's why you have a crossover of hatching. When there is a tap+thread mounting, SolidWorks handles hatching well (just like other software, by the way!).

Kind regards

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To answer jmSavoyat, the piece on the right has a thread.

I have attached a picture where you can see the screw in question uncut.

There are many cases where you have to cut screws in industrial design.

It is not easy to read without this rule.

 


filetage_taraudage_2.jpg
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If you take your screw on their own and make a drawing of them, with a cut, do you see the thread?


screenshot380.jpg

Hello

 

Indeed alain, I have the same behavior. I don't know if another 3D software does better, but in this case the parts are interfering and the 2 outer contours (strong lines) are visible. It is therefore normal for the hatching to stop at the said strong lines. So for me the representation can only be like the one indicated if we cut the 2 pieces. We will have the same representation if the section is in the other direction (radial).

Unfortunately, I don't really have any idea except for:

 - uncheck the "Automatic hatching" option when creating the section view and do them manually.

- or to put a note in order to warn.

- or, when creating the tapped hole via the "Drilling Wizard" function, take the "Thread removed" option, so there will be no more interference between the part and the tapped hole (see image).

 

Kind regards


assist_percage1.jpg
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For Benoit.LF, yes I have my thread present when I cut my screw by myself.

For jmsavoyat, the idea is not bad, the work to be done to redress with lines to hide, lines to put and hatching is almost the same.

I have the impression that there is nothing simple as a solution. I will wait a little before closing the question.


filetage_taraudage_3.jpg

I put another attachment back by placing the hollow screw with the thread above the thread to better see the problem area.


filetage_taraudage.jpg

Hello

 

To answer JMSAVOYAT, from memory, Solidedge knows how to manage this problem of thread representation. I think that the developers of Solidworks didn't want to bother with this problem, besides, the option to show thread lines is not automatic, you have to do it manually which says a lot!

 

To answer Alain, I don't think there is a miracle solution to this problem, apart from doing it manually as mentioned earlier. Good luck.

1 Like

Hello 

 

To make threads and threads appear in an assembly, you must use object dimensioning, in particular by activating annotations in the assembly. 

 

A+

Hello

@Rim-b, "I think that the developers of Solidworks didn't want to bother with this problem, besides, the option to display thread lines is not automatic, you have to do it manually which says a lot!". Where did you see that thread marks had to be displayed manually? Once the document options (and all options!) are set, simply save the document templates. The advantage of customizable options is precisely to satisfy a maximum of users. But not knowing Solidedge, I can't compare.

Kind regards

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I hadn't seen that you could configure the display of thread lines automatically in an assembly drawing. On the other hand,  how do you do it, I can't find the right option for that?

 

I continue to think that since solidworks has existed, the problem mentioned by Alain should have (could)  have been solved. The cross-sectional representation of a screw in a thread is one of the first basics I was taught in drawing.

Hi Alain and very happy new year to you,

I'm also looking for a way to solve this problem thinking that the SW2019 version would have evolved on this point, but no.

So my question: Have you found a solution? 

I have read jmsavoyat's proposals, but it is still a very manual and long correction intervention.

So, after more than 5 years that you raised this problem, nothing has been done by Dassault?

Thank you

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Happy New Year Luigi!

No, to my knowledge, the problem has not been solved.

See you next time?

Alan

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Ok, thank you Alain

;-)