Compound Machine Activity
Part 1 - Compound Machine Design and Construction
Parameters:
1) THREE different simple machines
2) Energy in shall be rotational energy
3) Energy out shall be vertical lifting energy (5 inches lift minimum)
4) Pre-construction design documentation must be signed off by instructor
5) Construction phase must be documented in an ongoing manner
6) Final design must be recorded with annotated sketches for record
7) Your team must calculate and record the Mechanical Advantage of your machine
8) Instructor test and pictures required for full credit upon completion
9) Student written reflection over difficulties and process as summary required
1) THREE different simple machines
2) Energy in shall be rotational energy
3) Energy out shall be vertical lifting energy (5 inches lift minimum)
4) Pre-construction design documentation must be signed off by instructor
5) Construction phase must be documented in an ongoing manner
6) Final design must be recorded with annotated sketches for record
7) Your team must calculate and record the Mechanical Advantage of your machine
8) Instructor test and pictures required for full credit upon completion
9) Student written reflection over difficulties and process as summary required
Goals and Constraints:
Lift a metal disc up in a container designed and built by you using only the kit materials provided. The metal disc is be be lifted up to a magnet which shall attract and secure the metal disc. Once this has occurred the container must then be lowered back down to the original staging area as if ready for another disc which could be inserted by another operator in the factory.
String will be provided as necessary if a pulley system is utilized, otherwise only kit materials are allowed. Rotational energy must be input into simple machine number 1, and lifting energy must be applied by simple machine number 3.
Transfer of energy must be achieved effectively, without any handling of the machine other than manually turning the crank to provide the initial input of rotational energy.
YOU CANNOT TOUCH ANY OTHER PARTS TO FACILITATE
THE MACHINE IN DOING ITS DESIGNED JOB.
To receive full credit your machine MUST operate and complete its desired functional goals. There is a time limit of 3 class periods. This type of time limitation is indicative of a contract having a prototype completion date which reflects real world constraints. GOOD LUCK!
Lift a metal disc up in a container designed and built by you using only the kit materials provided. The metal disc is be be lifted up to a magnet which shall attract and secure the metal disc. Once this has occurred the container must then be lowered back down to the original staging area as if ready for another disc which could be inserted by another operator in the factory.
String will be provided as necessary if a pulley system is utilized, otherwise only kit materials are allowed. Rotational energy must be input into simple machine number 1, and lifting energy must be applied by simple machine number 3.
Transfer of energy must be achieved effectively, without any handling of the machine other than manually turning the crank to provide the initial input of rotational energy.
YOU CANNOT TOUCH ANY OTHER PARTS TO FACILITATE
THE MACHINE IN DOING ITS DESIGNED JOB.
To receive full credit your machine MUST operate and complete its desired functional goals. There is a time limit of 3 class periods. This type of time limitation is indicative of a contract having a prototype completion date which reflects real world constraints. GOOD LUCK!
Part 2 - Compound Machine Cost Analysis
Required Outcomes:
1) Generate a self calculating spreadsheet modified from the provided spreadsheet
2) Reflection (written) regarding what you learned about using Excel on class blog
3) DETAILED and ACCURATE accounting of ALL parts used in your machine
4) Photograph your machine and attache photo into tabbed page 3 of spreadsheet
5) Itemized accounting in spreadsheet of all parts used to generate materials cost
6) Compare effective machines by cost with your peers - Submit this sheet to Engrade
7) Revise your design to lower cost of production and recalculate as necessary
8) Sketch with annotations new design concept as modified and record adjusted price
9) Reflect on what you learned about production costs and designing efficiently
1) Generate a self calculating spreadsheet modified from the provided spreadsheet
2) Reflection (written) regarding what you learned about using Excel on class blog
3) DETAILED and ACCURATE accounting of ALL parts used in your machine
4) Photograph your machine and attache photo into tabbed page 3 of spreadsheet
5) Itemized accounting in spreadsheet of all parts used to generate materials cost
6) Compare effective machines by cost with your peers - Submit this sheet to Engrade
7) Revise your design to lower cost of production and recalculate as necessary
8) Sketch with annotations new design concept as modified and record adjusted price
9) Reflect on what you learned about production costs and designing efficiently
Part 3 - Compound Machine Retrofit and Upgrade
Parameters:
1) Motorize the rotational aspect of your existing machine with MINIMAL REBUILD
2) Record your ideas and difficulties all along the design and build process
3) Apply switches, sensors, and wiring as necessary to automate your machine
4) Sketch into your notebook a copy of your ROBOPRO program schematic
5) Test your machine and record outcomes...brainstorm as necessary to improve
6) Instructor must test and photograph final working model for full credit
7) Once completed and approved by instructor revisit your cost spreadsheet:
1) Motorize the rotational aspect of your existing machine with MINIMAL REBUILD
2) Record your ideas and difficulties all along the design and build process
3) Apply switches, sensors, and wiring as necessary to automate your machine
4) Sketch into your notebook a copy of your ROBOPRO program schematic
5) Test your machine and record outcomes...brainstorm as necessary to improve
6) Instructor must test and photograph final working model for full credit
7) Once completed and approved by instructor revisit your cost spreadsheet:
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