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2.1.1 - Stage 1D (Design Methodology)

Objective: Learn top-down design. Use a master layout sketch to model a swerve drivebase and integrate a pre-modeled scoring mechanism.

So far you have modeled isolated parts and simple gearboxes. This stage is a real robot workflow: how Team 2064 manages a multi-part assembly without the model breaking.

Step 1: Open your workbench

Section titled “Step 1: Open your workbench”

This project needs the master layout templates and the pre-modeled scoring mechanisms. Use the classroom workbench so those assets load correctly.

  1. Open the Stage 1D workbench.
  2. Launch or generate your project document. That file is the master assembly for the drivebase.

Enter the Stage 1D workbench

Step 2: Complete the training project

Section titled “Step 2: Complete the training project”

Work through these sections in order. Read the theory before you model. Top-down design is the CAD skill you will use most in competition season.

Part 1: Theory. The master-sketch approach.

Part 2: Drivebase. Model the chassis tubes and assemble the base in the document from Step 1.

Part 3: Integration. Add the bellypan, bumpers, and scoring mechanism.

Step 3: Return checklist

Section titled “Step 3: Return checklist”
  • The drivetrain frame is driven by the master layout sketch
  • Changing one layout-sketch dimension updates the tubes and module positions
  • COTS swerve modules are mated and organized in subassemblies
  • The top-level assembly has no red or yellow mate errors

Step 4: Submission

Section titled “Step 4: Submission”
  1. Click Submit in the Onshape Classroom.
  2. Tell a CAD mentor. They will check layout constraints and confirm the elevator is integrated into the chassis.