Mini Robotic Arm

Does this work? Yes.

Designed the body components through SolidWorks and implemeneted MG90S and SG92R microservos with arduino. Currently, the sensitivity of the potentiometers are too high, making controls difficult. Improvements include removing the SG92R motors with a positional micro servo, instead of continuous.

V6 Engine (1st Version)

Does this work? Yes.

Utilized a simple crankshaft system (repeated single crankshafts) and Inland PLA+ for filament (the black model), which I don't recommend as either: 1. the pistons got easily stuck or 2. the material was rougher than the Bambu PLA, which is smoother (shown in white).

Mechanical Arm (basic)

Does this work? Kinda.

I incorporated the chain drive to attempt to make a mechanical arm. The design process had many clearance issues and the chains breaking due to the chains being a 1-piece link, instead of the conventional two. The formula for pitch circle diameter (PCD) and path length can only be applicable to SolidWorks Assembly but not in real life because the sprockets could have different orientations and there could be tolerance issues. Experienced difficulties with mating the components together (e.g. not fixing the main part that other components can mate to), so I restored in making 3 sub-assemblies.

Chain Drive Practice

I designed using SolidWorks Toolbox to create a 06B-1 sprocket gear and created my own one-piece link chains (conventional is 2 pieces). Also, I printed 5+ chain designs using Bambu A1 and failed most attempts because either they were 2-piece link chains or the one-piece link chains did not fit on each other.

Notes: 06B-1 Sprocket Gear has a pitch of 9.525 mm (MMGS) with an inside boss length of 5.320 mm. Since the 3D printer's nozzle size is 0.4mm, clearance for most dimensions are 0.4 mm (However, after revisions, nozzle size is not correlated to clearances but the chains and the sprocket fits for this case).

Phone Holder

Does this work? Yes.

Added a bevel gear system to a phone holder. Encountered a manufacturing problem for the first time, mainly because the pinion gear couldn't fit in the foundation. This model can be improved by decreasing the distance between the two hooks that hold the phone. I'm still unsure why the holder (top part) is wobbly. I also had issues with the Motion Study feature in Solidworks to test if the bevel gears would interact correctly.

Bevel Gears Practice

Using SolidWorks Assembly for the first time, I created a bevel gear system for a future side-project. This can be improved by using hole wizard to calculate clearances easier and scaling the system larger for better 3D prints.

Cabinet Support

With the Bambu Lab A1 mini, I created a custom support pin to hold up a cabinet shelf by utilizing basic 3D modeling (e.g. extruded boss/base and cut). I measured the clearance using a measurement tape to find the dimensions (4.5in x 1.5in x 1in), and attached 2 sheet metal screws to the wall and 2 sheets of double-sided tape below the cabinet. This is susceptible to buckling if overloaded with excessive weight or force applied. The design can be improved by adding triangular supports.