Computer Controlled Machining Framework

Group Assignment

Individual Assignment

• Objective: Design, mill, and assemble a large-scale (~meter-scale) object using the lab’s machining equipment.
• Tasks:
  • Conceptualize and design a meter-scale object
    • The concept is to build an ironing board cum chair, the item is to have the ironing board that can be used as a chair and also a store some items. The idea was inspired by a facebook DIY video depicting an ironing board that can be made both as an ironing board and aslo as a chair. This saves space to put ironing board and chairs
    Open this link to view the Unique chair Ironing Board
    
    
  • Design: Parts, Sub assemblies and complete assembly of the chair cum ironing board.
  • Use of Tabs and Slot and parametric equations
  
  
  
  
  
  • Parts
  
  
  
  
  • Complete assembly and Animation
  
  
  
  
  
  • The CNC in our Labs at BIUST and UB did not work, so I went out to a Machine shop and requested then to assist me to do the assignemnt. I programed the design for use with the CNC Router at Woodland in Gaborne. With the help of the gentleman there I selected appropriate tools, speeds, feeds, and materials.
  • CNC Mill Router
  
  • I then opened Masterwork MW315 Ver 3.38 the opened the dxf file the generated the tool path.
  
  
  • I then generated the G-code
  
  
  
  • I then chose the tools, 8mm for cutting tabs and slot and 12mm for drilling holes for dowels
  
  
  
  • I then set put in setting for speeds, feeds and offsets
  
  
  
  
  • Did a program check, this is equivalent to dry run at the lab but at the commercial workshop they dont do dry runs as it wastes time, the simply do a check and it was ok
  
  
  • Program ready to cut
  
  
  Milling and Milled Componnets
  
  • Setting blanks on the machine bed
  
  
  
  
  
  • Finishing OperationI smoothened the surfaces using a buffing machine. I wore PPE as it created fine dust
  
  • I assembled the milled components into the final object, ensuring structural integrity and functionality.
  
  
  
• The completed assembled object, presented for evaluation.


• A brief report documenting the design process, milling challenges, and assembly steps.