Aircraft推拉式旋转编码器

Aircraft Push-Pull Rotary Encoder

2024-01-11 05:36:58

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Summary

As part of my A320 Flight Control Unit Project, I needed some push-pull Rotary Encoders. I searched for these and came across an Aircraft Parts supplier who could provide them for around $800—not going to happen.

Then I trawled through countless sites that proclaimed to have fixed this problem, and while some looked promising, they all had issues that I wasn't happy with.

What I wanted was an enclosed package, with minimal wiring concerns and reliable functionality with extra springs, and multiple parts or CNC work.

So, opening FreeCAD, I designed my own.

PM me if you want the FreeCad files.

I printed these on a Neptune 3, and was pretty aggressive with the infill, as I wanted strength and longevity. I also used PETG, for the same reasons.

The Rotary Encoders and tact switches you can get from Amazon

Rotary Encoder: https://amzn.to/3SexHzp
Tact Switches: https://amzn.to/47umQ8K

And the PETG I used was Overture Black PETG, again, on Amazon

PETG: https://amzn.to/48NhxSL

Print Settings

Printer brand:
ELEGOO
Printer:
ELEGOO NEPTUNE 3
Rafts:
No
Supports:
No
Resolution:
.4mm nozzle, 0.2mm layer height, 0.38mm line width
Infill:
98%
Filament brand:
Overture
Filament color:
Black
Filament material:
PETG
Notes:
I printed these SLOWLY. I needed high quality so the slide mechanism does jam. These are tight tolerances.

Post-Printing

Finishing

Debur all edges where there is shrinkage.
Sand all external faces of the inner slide and internal faces of the Holder.
Check for smooth, but not loose operation of the slide. It's only going to use the spring of the tact switch to spring back on a pull.