Double Rack and Pinion System Sponsored by JLCPCB

Thank you JLCPCB for sponsoring this project. Please get your 3D prints at https://jlcpcb.com/3d-printing/CSS

This project is a double rack and pinion system which converts rotary motor motion to linear rack and pinion motion. You will learn how to design a rack and pinion system using Fusion 360 3D modelling application. Let's get started.

JLCPCB offers all the above materials at the starting prices per piece in USD. The materials are accurate as of 11 July 2022.

There is 54 USD new user coupon for purchase of 3D prints.

Please get your 3D prints at https://jlcpcb.com/3d-printing/CSS

Download the Fusion 360 GF Gear Generator extension for Fusion 360 application from the browser.

Open Fusion 360 application. Click on Utilities on the top of the Fusion 360 application. Select Spur Gear to make pinion gear. Select Helical / Straight Gear Rack to make rack.

Select module = 1mm, Number of teeth = 47, Gear height = 10mm, Pressure angle = 20mm.

Pitch diameter (d) = Module (m) x Number of teeth (z)

47mm = 1mm x 47

Select module = 1mm, Number of teeth = 50, Rack thickness = 10mm, Pressure angle = 20mm, Rack height = 5mm.

The overall rack height will give 72.5 mm and the overall rack length will give 156.439mm.

We will need the following 3D prints:

4 x Rack 50 teeth 1mm

2 x Pinion 47 teeth 1mm

2 x R and P support short

3 x R and P support long

1 x Motor Mount

We specifically need one JGA25-370 motor because to fit the motor mount.

We need 50mm long M3 screws and nuts.

This project requires one motor shaft adaptors, please get them at

https://www.aliexpress.com/item/33057929198.html?spm=a2g0o.search0304.0.0.48eb5b3ckifcM8&algo_pvid=466137c1-5a14-41d3-ae25-d7a9042d9e1d&aem_p4p_detail=20220702071014415908105269600036251287&algo_exp_id=466137c1-5a14-41d3-ae25-d7a9042d9e1d-0&pdp_ext_f=%7B%22sku_id%22%3A%2267598064217%22%7D&pdp_npi=2%40dis%21SGD%21%211.96%21%21%21%21%21%402101d8f416567710147606447ea8d0%2167598064217%21sea

JLCPCB provides very good products. The gears are very accurate and smooth. Thank you JLCPCB. Please order your 3D prints at https://jlcpcb.com/3d-printing/CSS

To view the moving prototype, https://youtu.be/7KE033AtDEs