packaging equipments dr. hong zhang. wii assembly line v.s. honda assembly line
TRANSCRIPT
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Packaging Equipments
Dr. Hong Zhang
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WII Assembly Line
v.s.
Honda Assembly Line
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More Videos
• The video on DVD that comes with the textbook:– Pick and Place Mechanism– Bottle Printing Machinery
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Cam
By Dr. Hong Zhang
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Cam and Follower
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Different Motions
Translating FollowerOscillating Follower
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Different Constraints
Form-closed Force-closed
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Cam Followers In An Engine
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Different Followers
Flat-faced follower Roller follower Mushroom follower
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Motions of Cam
• Rise (R): One direction of output motion for a given period of input motion
• Fall (F): The opposite direction of rise for a period of input motion
• Dwell (D): No output motion for a specified period of input motion
• Combination of the motions: RDFD, RFD, RF
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Displacement Diagram
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S-v-a(-j) Diagram
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Fundamental Law of Cam Design
• The cam function must be continuous through the first and second derivatives of displacement across the entire interval (360 degrees).
• Corollary: The jerk function must be finite across the entire interval.
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How To Make a Cam
• Making of a cam shaft
http://youtu.be/sYO0Yp4Ag5g
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Non-Traditional Use of Cam
Discussion: How do you design this mechanism?
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Can You Explain This?
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Cylindrical Cam & Follower
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Cylindrical Reversing Cam
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Fishing Reel
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Multi-Stop Rotary Indexer
Video
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Rotary Indexer in Action
• Screen Printing Plant
• http://youtu.be/jA63O361xws
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Multi-Stop Rotary Indexer
• http://youtu.be/zb17XfDmrrM
• http://youtu.be/uO6j0Pvfi6Q
• Watch the videos above and see how many motion transferring mechanisms you can find and how many indexing mechanisms you can find.
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Geneva Wheel
• http://youtu.be/t7ZnHDdIvn0
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Scotch Yoke with Dwell
• http://youtu.be/3SCbTB50csM
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Discussion
• http://youtu.be/LEAqLu6gqVA
Given the filling, plugging, and capping machine shown in the video. Discuss what kind of mechanisms are used. If you are designing the same machine, what will you use?
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Design of Cam
• Always have continuous s, v, a
• Draw s, v, a, j diagrams to help design
• Consider 4-bar links, hydraulics and pneumatics as options.
• More cam designs are replaced by computer based control.
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Hidden Cam Applications
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Homework (Due Dec. 5) • Make a short (< 5min) video explaining the
mechanism of a push pen or a flip/slide phone. • By project group• You can use any tool for presentation
– Oral explanation– Reverse engineering– Hand sketch– Solidworks drawing– Animation– Etc.
• Upload to Youtube or your choice of video service and send me a link.