Final Write Up

Final Write Up - ME 324 Lab Lab#2 Measurement Group#6 Lab...

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ME 324 Lab Lab #2 – Measurement 2/2/2011 Group #6 Lab T.A. Lin Liu Justin Allen, Kyle Zibrowski, Muhammad Amir, Matt Montalbano, Vishal Bakshi, Wenbin Chen
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Contents Figures Executive Summary The activity performed in the second session of ME 324 lab was the measurement of a machined plate component made of 6061 Aluminum using the TESA Micro-Hite 3D CMM (Coordinates Measuring Machine). The CMM is a mechanical device that measures the coordinates of an object by allowing the user to move its sensor in the X, Y and Z directions. The three coordinates are recorded for each point by the CMM and under normal operation, a “point-cloud” is created which can be printed or exported into a 3D modeling program; this capability was not used in this lab session due to technical difficulties. The CMM also computes dimensions based on the coordinates of two points for a line, three points for a circle, and four points for a sphere. Each group compiled two sets of dimensions for the diameter of each of the five holes in the plate, and obtained the coordinates and dimensions for the entire plate. The CMM data was used to model the plate in a 3D CAD program, and the diameter measurements analyzed to interpret the tolerances and averages of the measured holes. 2
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The overall results from Section 6 showed an average diameter of 0.37 in. for the five holes, and an average percent difference of 15.0%. Depending on the application of the machined part, this level of accuracy may or may not be acceptable. In general, a 15% tolerance seems to be large. This level of inaccuracy will have more to do with the measurements than the actual machining of the part. The second part of the lab, which did not include any measurements, was the operation of the NewView 7100 3D Optical Profilometer. A profilometer is a device that uses light waves to map the surface roughness of an object. The profilometer in the ME lab is capable of recording data at 5X and 25X magnification. This data can then be used to determine the surface finishing process needed for the given object. Data was not collected from this device and is not furthered discussed in this report. Intro Reverse engineering is a process measuring the technological principles of a human made device, object or system through analysis of its structure. There are many reasons engineers use reverse engineering, the most common use is to reference the manufactured part against its
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This note was uploaded on 08/18/2011 for the course ME 335 taught by Professor Olsen during the Spring '11 term at Iowa State.

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Final Write Up - ME 324 Lab Lab#2 Measurement Group#6 Lab...

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