V-Arm

thingiverse

This was a project undertaken for Kinematics and Dynamics of Machines that drew inspiration from the U-Arm designed by U-Factory, albeit with a creative twist - it now hangs over a desk instead of sitting on one. The arm is powered by five servos: three large MG995, one 9g Micro Hobby servo, and another MG995 or hobby servo, depending on the selected end effector. The initial concept leveraged laser cutting and 3D printing due to my Printrbot's limited 9in bed, where the longest links measure 11 inches in length. I created a DXF that could be extruded .112 inches, enabling users to fabricate all components via printing if desired, though I personally opted against it. The Bill-Of-Materials.xlsm file outlines the materials I utilized during assembly, all of which were sourced from Amazon. Although I did not provide direct links, descriptions from their respective Amazon pages should facilitate easier identification for interested parties. View a demonstration of the arm in action with cups at https://www.youtube.com/watch?v=K50qWeUVPHg&feature=youtu.be Assembly instructions can be found below. The assembly process relies on M3 screws, which are predominantly held in place by undersized spacers due to their threaded nature. A separate PDF offers a more detailed look at the arm's layout, which should aid during the assembly phase.