Assignment

  • Group Assignment:do your lab's safety training
  • test runout, alignment, fixturing, speeds, feeds, materials,and toolpaths for your machine
  • Document your work to the group work page and reflect on your individual page what you learned

  • Individual Assignment: make (design+mill+assemble) something big (~meter-scale)
  • extra credit: don't use fasteners or glue
  • extra credit: include curved surfaces

    • All the important links are Here

    Learning outcomes

  • Demonstrate 2D design development for CNC milling production
  • Describe workflows for CNC milling production

    • Shopbot PRSstandard

    This is detailed manual on the machine we have here Shopbot PRSstandard

    This is a labelled diagram of the machine here

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    This is the axis orientation of the machine

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    Group Assignment

    • do your lab's safety trainingli>
    • test runout, alignment, fixturing, speeds, feeds, materials,and toolpaths for your machine
    • Document your work to the group work page and reflect on your individual page what you learned

    Here is the Group Assignment

    The assignment explores the ShopBot PRS Standard CNC machine, detailing its specifications, safety rules, and the process of modeling and cutting a simple object. Here's a breakdown:

  • Introduction: The assignment aims to understand the capabilities of the ShopBot PRS Standard CNC machine, covering its specifications and safety guidelines.
  • Specifications: The machine offers a workspace of 2400mm x 1800mm, operates at a speed of 10000 RPM, and uses ShopBot Control Software. Workpiece fixation is achieved using clamps, and origins are set using proximity sensors for the x and y axis, and manual zeroing for the z axis.
  • Rules: Operating the CNC machine requires adherence to safety protocols, including wearing safety glasses and hearing protection, never leaving the machine unattended, and ensuring proper clamping and maintenance. Emergency stop buttons and dust cleaning are also emphasized.
  • Modeling and Cutting: The process involves designing the object in Fusion 360, preparing the material (ply board in this case), creating tool paths using Vcarve software, and setting cutting parameters such as RPM, endmill, and material thickness. A first cutting attempt faced issues due to improper axis origin settings but was rectified in the second attempt, resulting in successful cutting.

    • Conclusion: The assignment provided practical experience with the ShopBot PRS Standard CNC machine, emphasizing safety, understanding of specifications, and successful execution of cutting tasks. Future projects can leverage these skills. Overall, the assignment underscores the importance of understanding CNC machine capabilities, adhering to safety protocols, and honing practical skills in modeling and cutting objects.

    Individual Assignment

    • make (design+mill+assemble) something big (~meter-scale)
    • extra credit: don't use fasteners or glue
    • extra credit: include curved surfaces

    My design

    This week is something I have been waiting for since the starting of the fab academy course. I always wanted to use the CNC machine to make a desk organizer for myself, but since its is suppose to be in meter-scale I cancelled my plan. I have decided to make a cat tower for my pet cat. The design I chose is inspired from Lina Hudaib

    Firstly lets download the dog bone addins

    For that follow the link and download the Add-in.

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    This is the only parameter I used, one for the hold diameter and the other for the material thickness

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    First sketch the part and extrude it.

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    Then I tried assembling it

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    Then made a stable stand on the edge to support the whole structure

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    Then comes a place where my pet cat can climb and rest on

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    Dont forget the dog bones!!

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    I made two holes for my pet's plate and cup. and there you have it The whole design

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    Here is a 3-D model of it

    Miling!

    Using the softwares

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    Now the real miling!

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    Dont forget to clean after use!

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    Outcome

    And yes, the outcome is not as expected

    The black cloth is supposed to depict a cat, and the holes are where the plates go.

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    Files

    My .dxf file for the cat tower