Screwthread in 2D

[KevinHSH]

Hi,

 

For my work i am now responsible for the drawings.

Six months ago, i never had worked in a drawing programm.

Now i have followed Autocad-lessons for four days.

It is less, but for the most things i can help myself.

Ik work with Autocad LT 2012

 

For the drawings that i have to make for my work, is the most possible for me.

I only have one big problem.

On some of our parts there is a inner and/or outer screwthread.

Ik have tried some times to draw this, but not with succes.

I have searched out this on Google, but i didn't find a good answer. The only thing i find, is that this is possible with Inventor en with Autocad mechanical.

The problem here is that we don't have the inventor or the mechanical.

Is there a possibility to draw screwthread with Autocad LT?

If not, how do you draw the screwthreads?

 

Thank you very much in advance,

Best regards,

Kevin Crombez.

Edited July 5, 2012 by KevinHSH

[Tiger]

Hi and welcome to the forum.

 

I just want to clarify one thing, are we talking about screwthread?

 

Perhaps some of the links that ReMark have gathered Here can help you.

[KevinHSH]

Hi Tiger,

 

Allready thanks for the answer.

It was indeeed screwthread, i have changes my post.

Yhe drawings are in 2D, so it's the intention to draw the screwthread in 2D.

[Tiger]

Just wanted to make sure I have updated the title of this thread as well.

 

CAn you attach and image of what you have done so far?

[ReMark]

Is this what you are looking for?

[KevinHSH]

Here cou can find my drawing.

The drawing is completed, only the thread must me done.

The orange colored part must be a screwthread.

 

[KevinHSH]

@ ReMark Yes, Thats exactly what i'm looking for!

[ReMark]

The image I posted was extracted from a 3D solid model of a bolt. You are doing your drawing entirely in 2D without the benefit of 3D. Is that correct?

[KevinHSH]

Yes, the drawing is completely in 2D

But i allready heard from several persons that drawing in 3D give much advantages compared with 2D.

So maybe i going to follow within a few months a Autocad-3D training.

 

But for the moment it must be done in 2D...

[ReMark]

Then I would recommend either a book about technical drawing or do an Internet search on the proper way to draw screw threads.

 

Are we talking metric or inch-sized threads? Right-hand or left-hand threads? Coarse, fine or other?

 

An example of what can be found via an Internet search. This is for an external Acme thread. http://www.wildcatdrafting.com/attachments/145_Detailed_Acme_Threads.pdf

[nestly]

mcmaster has all types of cad drawings for fittings/hardware

 

http://www.mcmaster.com/

 

Example: http://www.mcmaster.com/#cadinlnord/5372k154/=i9smck

[JD Mather]

There are three standards for drawing 2D screws.

1. Simplified - used the most, simply dashed (hidden linetype) representing threads. Drawn in nominal position as drawing in true position would not print distinct lines from OD.

2. Schematic - used less often than simplified, a series of long thin and short thick dashes, again drawn in nominal position.

3. Detailed - used least often than other two methods, generally only used to represent large threads (over 1" or 25mm), particularly in assembly sections or multiple largethreads on a cylindrical part.

 

Consult any standard technical drafting text on this topic (a must for someone educated in this field).

[KevinHSH]

Hi,

 

I have found a solution for it.

Thanks for all the tips that you give me. It is a great forum!

 

The solution was to search in the ISO-tables to the right dimensions for the screwthread.

Then you draw the contour of one thread. With a arrea you make the hole thread.

Then you mirror the thread, andn move the lower thread a half of the pas to the right.

As last you connect the inner and the outer points of the thread and your done.

 

Below you can see my drawing.

I am sure it is not the best solution, but for us it is acceptable.

 

 

So thanks for all your help!

Edited July 6, 2012 by KevinHSH

[ReMark]

Everyone should draw at least one set of threads in their career just to know what is involved. After that either use the Simplified method or download a block from a manufacturer's website. Quick, easy, and effective.

[Dadgad]

Hi,

 

I have found a solution for it.

Thank for all the tips that you give me. It is a greaf forum!

 

The solution was to seach in the ISO-tables to the richt dimensions for the screwthread.

Then you draw the contour of one thread. With a arrea you make the hole thread.

Then tou mirror the thread, en move it the hald of the pas to the right.

As last you connect the inner and the outer points of the thread and your done.

 

Below you can see my drawing.

I am sure it is not the best solution, but for us it is acceptable.

 

[ATTACH=CONFIG]35756[/ATTACH]

 

So thanks for all your help!

 

Welcome to the forum.

Well done, good problem solving!