Computer Controlled Machining Framework

Group Assignment

• Objective: Complete your lab's safety training and perform initial tests on your machine to ensure proper operation.
• Tasks:
  • Participate in and complete the lab's safety training program, covering equipment handling, emergency procedures, and personal protective equipment (PPE).
  • Test runout (e.g., spindle accuracy), alignment (e.g., machine axes calibration), and fixturing (e.g., workpiece securing methods).
  • Experiment with speeds, feeds, materials (e.g., wood, metal, plastic), and toolpaths to optimize machine performance.
• Deliverables:
  • A safety training certificate or completion record.
  • A detailed log of test results, including measurements, observations, and recommended settings for future use.

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 (e.g., a table, sculpture, or structural frame) using a CAD tool (e.g., SolidWorks or Fusion 360).
  • Program and mill the design using the lab’s CNC machine, selecting appropriate tools, speeds, feeds, and materials based on group test results.
  • Assemble the milled components into the final object, ensuring structural integrity and functionality.
• Deliverables:
  • CAD files and milling program (e.g., G-code) used for the design and fabrication.
  • The completed assembled object, presented for evaluation.
  • A brief report documenting the design process, milling challenges, and assembly steps.
• Extra Credit Options:
  • Don't Use Fasteners or Glue:
    • Design and assemble the object using interlocking joints or other fastener-free techniques (e.g., dovetails, mortise-and-tenon).
    • Document the joint design and assembly method.
    • Deliverable: A description or diagram of the interlocking mechanism and its effectiveness.
  • Include Curved Surfaces:
    • Incorporate organic or curved surfaces into the design (e.g., sculpted edges, rounded profiles) using advanced toolpaths or multi-axis machining.
    • Ensure the curves enhance the object’s aesthetics or functionality.
    • Deliverable: A rendering or photo of the curved surfaces and a note on the machining technique used.

Notes: This framework guides the group safety and testing phase, followed by an individual project leveraging CNC machining skills. The extra credit options encourage innovative assembly and design techniques, building on your experience with organic modeling (e.g., the hard hat project).