First, try out just a basic assembly to get a feel for how springs work:
1st - experiment with springs:
Part #1: Create a base for your spring.
1"
0.1"
0.2"
2"
Part #2:
0.2" - 1"
0.1"
Open up an assembly
Assemble parts #1 and #2 together:
Right click on the base and ground it,
constrain the top to move up and down on the axis of the base:
Environments → Dynamic Simulation →
Insert Joint → Spring / Damper / Jack
Component 1: Click on the edge of your base
Component 2: Click on the edge of your top
Right click on external loads, define your gravity
just click on the axis for the direction
Right click on your spring, apply a stiffness
After playing around with the springs, can you figure out how to make a cam/valve assembly?
I'm not going to give you dimensions for this - think about the size of your engine, and see if you can figure out how to make one of these!
You will need 3 parts:
your cam shaft, your valve, and a support.
Start with a Valve - this is what will let fuel into the combustion chamber above your piston, or let exhaust out of it. Think about the diameter of your piston, and make your valve small enough that two of them can fit above the combustion chamber.
If you want to finish up a nice engine with timing gears, cam shaft, and valves that would work! If you have another project in mind, that can work too.
No class the weekend after thanksgiving. The last weekend in class will be open for you to work on whatever project you would like to do.
The final will be creating a simple assembly in Inventor.
