Overview of Status of Analysis, Design, Fabrication, Tests, etc.
The design solution with an analysis on the force required has been evaluate and decision is ready to being made for the next following week.There are two different thoughts on attaching the hydraulic to the tilting platform and both of them have to be determined as soon as possible. In addition, the selection on the stroke of the hydraulic still pending due to the methods on attaching the tilting platform are totally feasible.
Tests: In process of rebuilding wooden model to test out new forklift/frame design.
Analysis: The quasi-static analysis, from 0 to 90 degrees has been completed for top and bottom driven mechanisms.
The frame (bottom portion) of the device has been designed and CAD(ed).
Accomplishments from Previous Week
Josh - Completed MATLAB analysis from 0 to 90 degree. of bottom and top driven designs (in presentation).
William - Determined power required for pump. Received quote for materials and labor for frame from upper campus machine shop.
Romulus - Determined Casters for purchase, Completed CAD of Frame.
Dev - Completed preliminary cradle cad and cost estimation of all parts for cradle.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
William - Get the purchase list and ready to get an approval from both instructor and sponsor
Josh - Practice welding in the machine shop, and other major techniques needed for this machine-heavy project.
Dev - Get quotes for frame from outside machinists.
Romulus - Finish rough draft of report and CAD cradle.
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Comments from Sponsor meeting on April 24, 2013.
Need loan agreement signed off by UCSD for delivery of testing cabinet; Action taken: Emailed Isaiah, cc professor.
Continue to look at the bottom driven model with full platform (cradle), just place a strip of rubber on bottom corner. The comment came from revising a previous design, the design has the cabinet placed on a platform and pushed up from the bottom and tilted. The change came from recognizing the massive frictional force that will occur as the platform directly in contact with the floor. The sponsor stated to continue to pursue this idea, the thoughts were that the device we create can roll back a bit until the platform
Cabinet casters are currently deforming tiles, set the casters wide and send proposed casters to sponsor for review before ordering.
Safety switch on extendable outriggers, create a device/sensor that will not allow the hydraulic mechanism to be operated unless the outriggers are completely extended. Action taken: currently researching.
Look into pulling the platform from the top (using hydraulics) vice bottom pushing, for tilting motion. Action taken: Completed Analysis, in presentation.
Regarding the batteries, determine the number of cycles the whole operation can go through until the battery needs to be recharged, shoot for 8-10 operations per charge.
Look into battery types in Asia/Europe and check for chargers and inverters.
Determine the hydraulic kit needed and send web-link to sponsor for review as soon as possible.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Comments from Instructor Meeting on April 22, 2013:
Ensure the Machine shop (Tom) approves any outside work/Upper Campus requests. Action taken: Noted.
Complete Quasi-Static Analysis from 0 to 90 degrees, can be 5 degrees at a time, or 1. Action taken: Completed using MATLAB, in presentation.
Perform Weight estimate of model. Action Taken: currently the frame is only assembled in SolidWorks, current weight is
Add brakes for casters. Action taken: After speaking with sponsor and noting that the current cabinet does not have brakes, braking assemblies can be purchased afterwards.
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
None
Risks and Areas of Concern
The placement of the hydraulic cylinders. This will require determination of stroke length, piston size, starting and finishing angles.
Resources or Information Required but not Available
None
Schedule
Describe upcoming milestone
Update Gantt chart.
Budget (list amount spent and amount remaining)
Spent $4.08, Remaining $8495.92
Progress on Report and Webpage
Report and webpage have been modified and are on track to have the first draft ready by Friday, May 3.