Open SCAD Gear Generator

[IanTParticipant @iant]

I've been using Open SCAD to design and print simple adaptors and other useful parts (having failed dismally to get a grip of other popular 3D CAD programmes). I am very much a learner in this field but have found SCAD to be something I can learn in very small steps (which in my case is absolutely necessary).

However, this is clearly a very powerful design tool in the hands of others better qualified than myself. A new feature of Open SAD is the 'Customiser' feature that essentially lets a user enter parameters via an on-screen form. Someone clever has used this feature to write a 'Gear' generator which can produce a very wide range of gear types and sizes for 3D print. The equally clever folk at the G13DCircle spotted this on Thingiverse and highlighted it to it's subscribers.

I haven't quite fathomed out the Customiser myself yet (I'm still a White Belt in SCAD terms) but I thought it was such a useful idea that I would publicise it here for others to take a look at. Gear types currently supported include:

• Rack
• Spur gear¹
• Herringbone gear¹
• Rack and pinion¹
• Annular/Internal spur gear
• Annular/Internal herringbone gear
• Planetary gear
• Bevel gear
• Bevel gears (meshing pinion and idler)
• Herringbone bevel gear
• Herringbone bevel gears (meshing pinion and idler)
• Worm

You can find it here:

Open SCAD Gear Generator

 

IanT

 

Edited By IanT on 19/04/2020 10:28:38

[IanTParticipant @iant]

Form driven Gear Designer in SCAD

[IanTParticipant @iant]

A few examples…

[Colin HeseltineParticipant @colinheseltine48622]

That looks clever.

A week or so back I was looking for a rear cover for a NEMA23 stepper motor. I found one on Thingiverse which had been revised to work with OpenSCAD and was parameter driven. I had heard of OpenSCAD but never used it. Simple download, loaded the Thingiverse file. Worked a dream to get the size cover I wanted with room for XLR connector for connection to stepper controller.

This gear one could be used for making patterns for casting hopefully. Will have to have a play.

Colin

[IanTParticipant @iant]

Colin – one of the great advantages of Open SCAD to my mind, is that you can download an existing design and modify it to suit your own specific needs.

I've done this with several Thingiverse designs which were simple enough for me to understand (e.g. the variables that I needed to change) to get the end result I wanted. I don't think this 'portability' would be quite so easy with other 3D CAD programmes?

I am also learning about 3D Print as I go – and the ability to copy and modify an existing 3DP design is a big advantage. It let's me make useful 3DP items quickly. I was originally hesitant to get into 3DP because of all the new stuff I needed to understand (the steep earning curve) before I could actually be productive. I've plenty of other things to fill my time with.

Open SCAD has really helped me to get up and going quickly in 3D Printing (which is at the moment all I intend to use it for). I use 2D CAD for my engineering drawings and I'm happy with TurboCAD in that respect – although having happily used SCAD for a little while now – I might also look at Free CAD which has some useful associations with SCAD.

If the 'Customiser' feature starts getting routinely used by more advanced SCAD users for their 3DP designs, I think it will be tremendously useful to the less skilled user (such as myself) – allowing simple adaptation of their more complex drawings to meet specific needs.

Regards,

IanT

[Roger WhiteleyParticipant @rogerwhiteley62172]

Hi. I’ve been exploring openSCAD for about six months – I’ve just joined this site – I was a Model Engineer and MEW reader from the mid 70’s to the late 90’s before other things got in the way. So before ME readers joined the internet!. I had an ML10 for decades until I lost it about 15 years ago – I’ve been 3D printing for about 18 months and have several. There are some terrific openSCAD resources which I’ll post links to.

[Author]

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