week 10: individual

For the second presentation, we mentioned about adding a torsion spring to generate a counterbalanced to secure we have a 50N contact between the current carrier tthe carbon shoe pad.

Now adding torsion spring is very complicated as of now. However, I am working a prototype to fit the torsion spring on the mechanism

first,

torsion spring

the prototype will include a two springs

right and left winding direction

already ordered from the link below

https://www.mcmaster.com/9271k643

			spring design result
120 degrees torsion spring
parameter		units
inner diameter	0.832	in	torsional moment	45	in-lbs
outer diameter	1.102	in	tensile strenght	216396
number of coils	7		max% allowed tensile	80
deflection in degress	120		bending stress	188092
wire diameter	0.135		stress limit	173117
wind direction	right

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WEEK 12: 3D printing for Prototype

This week is spent 3D printing all the parts for the prototype. The CAD is coming along however 3D printing takes longer because we depend Makerspace availability. This is the 3D printed part that will be attached to the body of the slave. The plans is to secured, fixed (bolted) one side on the torsion spring (the outside) and apply a force on middle legs. this will counteract the force applied and create the 50N we expect. It was important to design a housing for the spring so we can attached to the spring and to legs. We are making iterations as we continue receive all printed parts. One important factor was how to hold on to the leg. the next figures show the the changes. These two figures are parts of the mechanism that will house the legs on the middle section. as we continue with these models we realized many iterations that have to made and prototyping provide the opportunity to see that. the two figure will replace...

Week 5 (February 6,2019):Latest current pick up mechanism and current rail design

For the past week, the team have modified the current rail and the current pick up mechanism. The figure above represent last year design. the figure above is the latest design The figure on the right is the mechanism that will make contact with the electric current rail. the legs (L-shaped) are design to fit the the width of the overall Guideway track.

WEEK 6: CAD drawing submitted for fabrication

The week after presentation, helped me to address very important details regarding the current insulator and rail. Also, it helped few modification on the current pick up mechanism to pivot about a joint. I have addressed those details as shown in the figure below. Using SolidWorks, I was able to calculate the tolerance angle as the current pick up mechanism is raised for a maximum on 1 in. a 10 degree angle will be used on the top pivot point. Additionally, I have sent the final drawing to Turpo Manufacturing company for fabrication. They will be machining some on the parts on this mechanism in exchange of advertising. finally I'll be working on the unistrust channels which will hold our current rail.

Daniel's Spartan Superway Project

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