Loading
Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!

Coxa - hip joint (surface melt version)

by Ablapo, published

Coxa - hip joint (surface melt version) by Ablapo Feb 26, 2013
0 Share
Download This Thing! Customize Order This Printed Tools & Utilities

Thing Info

4305Views 701Downloads Found in Robotics
Report Thing

Summary

This hip joint for walking robots can be used for metal geared servos. The other printed leg parts of the pictures can be found in the ancestor things:
http://www.thingiverse.com/thing:53120
http://www.thingiverse.com/thing:51425

At the moment I don't know how much weight this part can carry. If you see the printed part bending, then you can use the optional lower clamp part.
I added a picture including the coxa part from tmbg's "3DOF Mini Quadruped" to compare the dimensions of my optional, experimental clamp version.

Instructions

Adjust the parameters using OpenSCAD for best performance. Then print the part with at least 3 perimeters.

More details on surface melting: www.thingiverse.com/thing:51425
Make sure there is a small hole in the gear trap. Then heat up the inner surface with a torch tool and press a metal geared servo into that melted surface and the gear trap.
To heat up the surface of the printed part I'm using an alcohol torch from Buffalo. You can squeeze that alcohol filled plastic bottle to have a tiny flame tip.
Secure the servo with a screw. There should be no gap between the printed part and the servo's body.
This heat method is not recommended with nylon geared servos. Resin may be a better way for nylon geared servos.

Next step is to connect the leg to that printed coxa part. That end is used as a clamp and should sit very tight. Secure that end with another screw.

The experimental version shows the coxa part together with an optional clamp part. Probably you will not need this clamp part. This clamp stl-file is for servos with a height of 27.5 mm.

More from Robotics

view more

Thing Info

4305Views 701Downloads Found in Robotics
Report Thing

Liked By

View All

License

GNU - GPL
Coxa - hip joint (surface melt version) by Ablapo is licensed under the GNU - GPL license.

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag. Print Thing Tag

All Apps

This App connects Thingiverse with Makeprintable, a cloud-based mesh repair service that analyzes, validates and repairs most common mesh errors that can occur when preparing a 3D design file for p...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App
Top