P18510: Ramelli's Rotating Reader
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Subsystem Build & Test

Table of Contents

Team Vision for Subsystem Level Build & Test Phase

This phase involved primarily construction. Specifically, gears and wheel faces were CNC routed and the central axles were glued from two inch thick pieces of lumber.

Before we could begin CNC routing, we needed to purchase router bits suitable for the thickness and hardness of our European beech. We eventually chose a 1/2" diameter bit for wheel face routing and a 1/4" diameter bit for gear routing. Next, we researched the "feeds and speeds" recommended for European Beech. When CNC routing, the "feed rate" refers to the linear velocity and the "speed" refers to the rotational velocity of the router bit. After consulting various online resources for router bits for hardwoods, we found that feed rates of 288 IPM and 216 IPM for the respective 1/2" and 1/4" bits and a speed of 18000 RPM for both bits would be suitable.

Our central axles were made by gluing 3 pieces of lumber together. The lumber was originally 120’’ in length so we cut each large piece to the required length of approximately 45’’ using a Band Saw. We then used the joiner to level one of the surfaces to use as a reference. After creating a reference surface on the lumber, we passed the wood through the Planer to level the surface opposite to our reference surface. We then went to the basement in Booth and began gluing the lumber together. After applying the glue we used a large screw clamp and other smaller clamps to keep it together. While applying the clamps we needed to clean up all the glue spillage before it dries on the wood. The lumber remained clamped for approximately 6 hours and was then brought back up to the MSD Room. Will Tracey was guiding our team through this entire process as he showed us how to use the machines and helped with gluing.

Routing gear

Routing gear

Expenses

Expenses

Risk and Problem Tracking

Risk Assessment

Risk Assessment

Plans for next phase


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