Skip to content

This page is archived material from a previous course. Please check for updated material.

    Technical Info

    Soldering

    Knurling

    • Video about how to make a knurled meccano shaft

    Powder Coating

    • Video showing the powder coating setup


    SolidWorks


    • Designing Sheet Metal Parts (from in-class lecture, June 1/2010)
      • Solid Works Environment
    • Menus offered by Solid Works
    • Standard:   COMMAND MANAGER
    • Menus can be added / removed as needed
    • Recommended menus to set up for phys253:
      • SKETCH
      • FEATURES
      • SHEET METAL
      • REFERENCE GEOMETRY
    • How to change menus:
        • Click on ‘new’ then ‘part’
        • Right-click on an empty section of the title bar
        • Pick and Activate all menus you want to add
        • ( To remove unwanted menus, you can simply drag that item to the center of the screen and use the ‘close’ button. )
        • Menus are independently customized for parts, assemblies and drawings (if needed)  Meaning, you set your choice of menus for working on assemblies after opening an assembly file.
    • Sheets vs. Solids
      • Both are extrusions of two-dimensional shapes to become 3D bodies
      • They can look exactly the same, but the CAD models behave differently
      • Important:  Bends can be added only when parts are extruded using the ‘base flange/tab’ button from the ‘sheet metal’ menu
      • Most commonly used basic bend functions are ‘edge flange’ and ‘sketched bend’
      • Main Advantages:
      • When creating ‘sheet’ type parts, added bends can be toggled on or off with the ‘flatten’ button

    • Saving option as DXF file is available

      • Export Options:
      • Finalized designs are exported and machined using the OMAX waterjet cutter.
      • OMAX machine can not read Solid Works files
      • File type needed:  DXF (=Drawing Exchange Format)Advantages:
      • Sheet metal  ‘part’  files can be saved  directly as DXF files
      • Parts do not have to be flattened, or be converted in a 2D drawing
      • How to:  Click on ‘save as’ and then use the pull down ‘save as type’  menu to pick  DXF

     

     

    Omax Waterjet Cutter


    Laser Cutter

    • Short video showing the machine
    • Some info about it. It is the Versa Laser VLS 4.60
    • Here is a list of materials that can be cut.

    Stock Material for Robot Chassis

    • Chassis for robots are generally made from 24 gauge steel sheet metal. ( 24 gauge = 0.60mm = 0.0239” thickness)

    • Different thicknesses are available but should not be used, if possible. Try to use structural features for stiffness instead.

    • Different sheet metal materials: Only in special cases, aluminum and other materials are available.

    • Delrin (a type of plastic) is available as sheet stock 1/4” (6.35mm) to make custom sleeve bearings – check out the sample at the front

    • Steel rod 4mm is available to make custom length shafts (fits meccano size gears and adapters)


    Motor Specifications

    Geared Barber Coleman motor (FYQF 63310-9)  (at 12V)

    • no-load speed:   470 rpm      max torque:  28 oz-in  (20 N-cm)
    • no-load  current:  0.1A      stall current:  1.3 A

    Un-geared Barber Coleman motor (FYQM 63100-51)  (at 12V):

    • no-load speed:   2300 rpm        max torque:  5.2 oz-in  (3.7 N-cm)
    • no-load  current:  0.13A       stall current:  2.75 A

    Princess Auto Double-shaft motor (at 12V):

    • no-load speed:   3700 rpm       max torque:  8.0 oz-in  (5.6  N-cm)
    • no-load  current:  0.24 A      stall current:  2.2 A

    Futaba Servo Motor (S3003) (motor + built-in encoder)  (at 5V)

    • max torque:    44 oz-in torque  (31 N-cm)
    • max speed:    0.23sec/60 degrees at no load



    Other Useful Links