Hinges

This week, we started to created our final project: an action figure.  The first step here was to create hinges so we can have moving parts on our action figures, like arms, legs, hips, and shoulders.

The first type of hinge I made I will most likely use for the elbows and knees of my action figure.  The first thing I did for this hinge is made 3 polygons, equaling out to be 100mm long all together.  I made them these exact shapes so they would be easier to work with later on.

Next, I used the revolve feature and revolved each of these shapes 360 degrees.

After that, I created a sketch on an offset plane 25mm away from my object.

Then, I drew two rectangles and lines them up with both sides of my object.  These will be used to connect the two sides in the next few steps.

After that, I extruded each rectangle out 30mm.

Next, I drew a line where my stabilizing bar will run across my object (this is a side view).

Then, I extruded one side out to the other side, which was 90mm.

Finally, I sized my completed model down by .2, so it was about 25mm.  I did this because my completed action figure can only be 100mm tall, so each little part can only be so big.

Here is the completed first hinge!

For my other hinge, I am going to use this for my hips, shoulders, and possibly neck on my action figure.  This particular hinge is called a Ball Joint.

For this object, I first made two center point circles, one inside of the other and slightly smaller.  I then created a line going from the center of the inner circle out about 45 degrees to the other circle.  I made another line going out 90 degrees to the left as well.  I then trimmed the rest of the piece except for the shape I made out of the parts of the circles.

Next, I revolved that shape around 360 degrees.  After that, I created an offset plane 15mm away from my object.

After that, I drew two rectangles in a cross shape extended slightly more than the initial shape on each end.

Then, I extruded the two rectangular shapes I made into my object 25mm to create cut outs so the shape can expand when the ball is pushed into the joint.

I then created a sketch and drew a half circle and revolved that around 360 degrees to create a sphere.

Then, I place the sphere in the joint just to make sure it would fit snug, but not tight.  Then I drew a small center circle on the sphere.

I then extruded the circle out 50mm.  This will serve as a handle to pull and push the ball out of and into the joint.

I then pulled the ball and joint apart and sized them each down for the same reason as the other hinge.

Here is the final ball joint!

Print Settings:

3D Printer: Ultimaker 2

Material: PLA

Nozzle: 0.84 mm

Layer Height: 0.15 mm

Infill Density: 15%

Infill Pattern: Zig Zag

Print Time: 18 minutes

Download the STL file on Thingiverse:

https://www.thingiverse.com/thing:3182366

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