P18482: Manual Rock Drill

Customer Handoff & Final Project Documentation

Table of Contents

Team Vision for Final Demo and Handoff

Final construction of the drill, finalization of the base design, construction of the base design, final ordering of parts and final testing were all completed. Additionally, our project team planned and completed the final deliverables and documentation required by MSD. The team is ready to present at Imagine RIT and hand the drill off to the customer.

Test Results Summary

We used an accelerometer attached to the impacting shaft to gather data to be used for analyzing the impact energy of the drill under the assumption that all the energy will be transferred to the drill-bit. The first data collected was the baseline of the drill without the added spring installed. The average velocity of the shaft was calculated by finding the area under the acceleration vs. time curve. This was then used to find kinetic energy of the shaft, which without a spring was calculated to 2.97J – a higher than expected value. The large peaks seen in the figures below come from the impacting of the shaft onto the 2nd shaft which is attached to the drill-bit. These peaks were determined to be the result of vibrations and impulse.

The 2nd set of accelerometer testing was performed with the spring on the shaft. Based on calculation results the total kinetic energy increased to 144.8J, with the shaft travelling at an average velocity of 12.51 m/s. These results are not the most accurate of nature, due to the large sampling rate of the accelerometer. The sampling rate was not small enough to gather the entire downward velocity of the shaft and spring – so at best these calculations are an estimate. The peaks seen in the data from the impact force indicate that the spring causes larger than initially predicted energies. This means that the realistic time to drill is most likely shorter than our initial calculations.

Risk and Problem Tracking

Risk Management
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Problem Tracking

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Final Project Documentation

Final BOM (see "obtained material" tab for order details)

Almost Final Paper.

Final Poster.

Final CAD Design

Final CAD Design of Interior

Functional Demo Materials

Video of functional design located at: https://www.youtube.com/watch?v=5-Dzwdp5aNQ&feature=youtu.be

Plans for Wrap-up

Final materials to be completed at the conclusion of this review include the Imagine RIT presentation, final formatting of the technical paper, and minor modifications to the drill to prevent pinching hazards during Imagine.

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