9. Machine Design
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- Design Challenge: Assemble and build a machine as a group--Machine Group
- Software: Fusion360 | V-Carve
- Tool: Shopbot
- Date Completed: 11.14.17
Machining
Our Harvard section is building a 2-axis CNC, that will "paint" UV-sensitive fabric with light. We decided to divide the whole session into four teams: milling, assembly, and programming teams. I'm on the machining team, so I focused on milling the component of the CNC.
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We are milling the yellow parts first.
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We used straight bit this time.
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We didn't mill 3d mold like we did on wax during molding&casting week. Instead, we mapping the 3D design to the 2D model and drill one direction.
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It is milling.
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Then, we are drilling the other pieces of the axis.
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We used screw to stable the board.
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We changed to a 1/4 bits for creating a smoothier surface.
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We used this triangle shape bit to create the chamfer showing in left.
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Changing the drill bit.
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The triangle bit milled the chamfer by going straight.
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Here were all the pieces(we prepared two sets of each piece) for the yellow parts in the Rhino file.
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We were reading to mill the next parts. We generated tool path based on the design in Rhino.
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We broke the bits because we put three for feed rate instead of one. So the bit went too fast and broke.
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I tapped the hole on the board and made it easier for screw to go through.