2020-08-11 Meeting Minutes - General

Andrew T.

• Worked on CAD for ->

• Connector hub for TQ motor configuration

• Finalize PCB shapes w/ Tony (Finish by Friday)

  • Update: not done

Andrew Z.

• Finished up frame

• Created assembly (along with STL file)

• Start arm 2D sketch

Alaina

• Working on: Hub attachment 

  • May be redundant, see 8/18

• Welding document 

• Science camera mount

Asha

• Drivetrain calculations excel sheet

• Science CAD fixes (elevator height etc)

• Drivetrain material properties etc

• Machining thread on a lathe

Caleb

• Cleaned up Arm CAD 

• Claw hex key

  • figuring out how to do it still

  • most commercial applications are probably too big, are connection severing, or too expensive ($200+)

  • look into a ratcheting mechanism

• Still some issues with arm CAD

  • Not sure who did which parts of the arm, some holes already had missing fasteners

  • Final gimbal review (elephant foot)

Tony

• Set-up motor testing w/ firmware

• Tube connector design

Drivetrain work

• Define drivetrain constraints and requirements in system doc

• Finish reading unidirectional composite material properties, estimate structural member sizes

• Design a 3-D printed motor housing

• Finish alternate design using ILM 115X25

• Source and purchase appropriate power resistor for Odrive

• Flash Odrive firmware st-link on disco board; also probably need to configure based on the encoder being used

• Tire energy methods FBD

• Fix CAD configuration with the mock-up hub

Claw re-work

• Allen key attachment friction-torque calculation

• Finish flexure design

Documentation / Support work

• Editing TQ meeting document so it’s readable for everyone

• Start new ordering sheet; add good slip-ring to ordering sheet

Misc work

• Set-up Solidworks PDM / SQL 2014

• Make a typical manufacturing tolerances table

Cole

• Figured out smart infill 

• Finalize e-box connector panel  

  • Meet w/ david → ??? → haven’t heard from him in a while

• Research what’s needed to use PC filaments with PRUSA I3

  • Figure where to order the I3 MK3 from, and source materials for heated enclosure

Emily

• Calculated necessary weld throat size for shear stress on the drivetrain

• Review calculations, calculate torsional and bending? (help)

David 

• Redesigned bottom plate for science to have mount for PiCam

• Experimented with topological optimization and generative design for PiCam bracket mount

• Researched alternative materials for e-box

• Have meeting with Cole about e-box connectors

• Finalize layout for e-box components

• Re-design bottom plate for science to have mount for science

• Looking for more work (drivetrain/looking for something more technical) - hopefully something I can finish by September