Engineering Base sizing of a robotic arm for maximum stability

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The discussion focuses on the design and sizing of a robotic arm's base for stability, emphasizing the need for proper anchoring and support. The base will be anchored with eight bolts, and the thickness is set at 8mm, with considerations for weld quality and the use of triangular gusset plates being deemed impractical. Calculations for the base diameter must account for the bending moments generated by the arm's weight and payload, ensuring that the bolts do not strip or pull through the base. Participants discuss the importance of understanding the relationship between the moment causing force and the strength of the bolts to determine the appropriate base size. Overall, the conversation highlights the complexities involved in ensuring the stability and safety of the robotic arm's base design.
  • #31
I was going to consider both case. You think an advanced fea simulation is the way to go?
 
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  • #32
Aaron Mac said:
I was going to consider both case. You think an advanced fea simulation is the way to go?
First figure out why you may wish to choose one base over another. If you aren't bolting it down then the base needs massive enough (and/or with some footprint) so the robot doesn't tip during its maneuvers. You can solve that problem with Dynamics. If you want a lighter weight solution that doesn't need to be "moved" you can focus on designing the bracket, bolts, and substrate.
 

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