Intro

Chassis Design with SolidWorks by OC Robotics

Accessing SolidWorks

Measurements and drawing

  • Use a caliper to take accurate measurements of components
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  • Create a rough sketch to guide your design

Create initial sketch in Solidworks

Create 2D sketch of Chassis base

1. Open a New Part File

  • Go to FileNew → select Part
  • Click OK

2. Start a New Sketch

  • In the Features tab, click Sketch
  • Select the Top Plane (ideal for base layout)
  • Click Sketch again to enter sketch mode

3. Draw the Rectangle

  • Select the rectangle tool and draw rectangle of arbitrary size starting from the origin
  • Use Smart Dimension tool
    • Click on one horizontal edge → set to 20.5 cm
    • Click on one vertical edge → set to 13.0 cm

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4. Make sure to save regularly

  • Click File → Save As → chassis_base.SLDPRT

Extrude the Base

  • Use Extruded Boss/Base
  • Base thickness: 5.5 cm

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Use shell tool to remove chassis lid

  • Select Shell tool on Features tab
    • Set the thickness of walls after hollowing to 0.5 cm
    • Select top face as the face to be removed

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  • The top should be removed, exposing a hollow box

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Add mounting holes caster wheel

Goal: Add two mounting holes for the caster on the bottom side of the chassis, each with a 0.4 cm diameter, and spaced 4 cm apart

  • Use ViewCube to select the bottom face of the chassis and start a sketch on the bottom face

  • Draw two circles and dimension to 0.4 cm

  • Set the hole spacing by dimensioning the center of both holes to 4 cm

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  • Draw a construction line across the middle of the chassis

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  • Draw a construction line between the 2 hole centers, then select the midpoint of that construction line and make it coincident to the other construction line

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  • Set the vertical construction line to be ~2 cm from the chassis edge and the sketch should now be fully defined

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  • Click Features → Extruded Cut and select “Through All”

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