Screw Maker

[ulrich1a]

It seems there are some issues with the Screw Maker macro here and then.
So I do open this thread, where feedback can be provided.

The generation of a real thread is possible with Screw Maker but needs a long time. It needs some minutes at my computer for one screw! So be patient. The console has now a feedback, which counts the rotations made at the cutting process.

I made some bugfixes lately. The latest version is Screw Maker 1.7.

Ulrich

Edit: There is a Version 2.0 posted here: http://forum.freecadweb.org/viewtopic.p ... =30#p95929
Edit: There is a Version 2.2 posted here: https://forum.freecadweb.org/viewtopic. ... 53#p234653
Edit: Screw Maker is now on github: https://github.com/ulrich1a/screw_maker

[ValkaTR]

Thank you lots! It works!
One step closer for open-source world domination!
Will it improve more?
Screws need lock-washer, holes and nuts with threads.

[ValkaTR]

There are troubles with some bolts.
Something went wrong during screw making.
Some look fine, some are not.

iso4017_M1_6x8.png (149.39 KiB) Viewed 23343 times

iso4017_M10x30.png (290.74 KiB) Viewed 23343 times

iso4017_M14x35.png (357.46 KiB) Viewed 23343 times

iso4017_M16x40.png (264.76 KiB) Viewed 23343 times

[ulrich1a]

Screws need lock-washer, holes and nuts with threads.

Nuts are on my todo-list. A screw tap may be added too. But it needs some time. I have so far not looked for a standard about lock-washers.

I am aware, that the real thread is not working for larger diameters. The thread-cut-algorithmen has to be refined for larger diameters. That at least some threads are working is based on trial and error at searching for a working method. The helix-function from opencascade has a lot of issues.
I did not look a the very small threads. That these having issues is new to me. Thanks for reporting.
Please be patient. I have a few things on my list, and will work on improvements.

Ulrich

[bejant]

Hi Ulrich, I read this post:
viewtopic.php?f=3&t=7096
and was wondering if there's a way to use your macro to make a headless screw or bolt; just the threaded length?

[catohagen]

Hi,

Im trying to make a conical helix and was wondering if you could help with the math, or maybe explain the math in your script and how I can add a taper, i'm using arc to draw, so it needs center-x,center-y and end-x ,end-y for each half pitch as you draw the thread....I can compensate/donate to you or freecad for your help.

[lsmod]

Hi Ulrich, I read this post:
viewtopic.php?f=3&t=7096
and was wondering if there's a way to use your macro to make a headless screw or bolt; just the threaded length?

I have the same question.

This script is wonderful - but i need more to have a thread in a solid object.
Is it possible to get this?

[ulrich1a]

but i need more to have a thread in a solid object.

Do you need a inner thread in a solid object in order to screw something in, or do you want something like a threaded bolt on a solid object?

Ulrich

[geant]

A tapped hole; threaded pocket!

[ulrich1a]

A tapped hole; threaded pocket!

This is on my todo-list. I want to do it with the right profile for an inner thread. I already had some thoughts on it. So ScrewMaker should than provide a screwtap to cut a thread into a solid. Unfortunately the progress is slowly, so more in months than days.

I have some code that generates threads faster. Unfortunately it breaks some screws. So I need to fix this first, before publishing it.

Ulrich