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3D-Printed Integrated Joint Actuator

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V6 (Current): Complete Redesign (12/14/25 - Current)

Version 6 offers significantly improved performance over V5, with a 11:1 reduction, ironless halbach array rotor optimized with Ansys Motor-CAD and Ansys Maxwell, a 10020 stator instead of 10010, and significantly more compact motor controller mounting.

The cycloidal disks and the ring pins are designed to be printed with iglide® i190-PF, whereas the structural parts are designed to be printed with PA6-CF.

Changes:

  • Changed reduction ratio to 11:1
  • Changed stator to 10020, and changed rotor to N52 Halbach array
  • Post processing issues fixed, removed hexnut cutouts from V5
  • Fixed stability issues with tighter tolerances and thicker bearings
  • Removed set screws from offset cams and rotor
  • Fixed cycloidal disk fracture by printing with iglide
  • Significantly reduced weight by removing aluminum ring pins
  • Removed rotor back bearing and optimized ODrive S1 Mounting
  • Removed purely aesthetic surface pocketing

Subcomponents and File Naming

Custom parts should obey the XXXX YZZ - NAME file number convention:

  • XXX: Module ID (Alphabetical)
  • Y: File type classifier (Numbers)
  • ZZ: Part number (Numbers)
  • NAME: Descriptive file name in Title Capitalization Form

Module IDs

  • BLDC: Brushless DC Motor
  • CYC: Internal Cycloidal Gearbox
  • COTS: Commercial Off the Shelf
  • ODS1: ODrive S1 Mounting

File Classifiers

  • 0: Top-level assemblies (No more than 1)
  • 1: Subassemblies
  • 2: Equation.txt files
  • 3: Drawings
  • 4: Individual parts
  • 5: Wiring, piping, tubing, and weldments
  • 6: Test fit files
  • 7: Misc. files (Textures, Scenarios, Simulations)
  • 8: Solidworks VISUALIZE files
  • 9: Manufacturing files (3MF, STL, DXF, GCODE)

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A 3D Printed BLDC QDD actuator with an internal cycloidal gearbox and an integrated motor controller

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