Hello to everybody.
I'm new here and want to contribute to the community with my grain of salt.
I have to admit I was inspired by your design, Nicolas, I liked the idea of an "inverted" delta robot with a simple motor controlling the length of the arm (it is the final goal). So I put hands on work and ended with something very similar to your design, let's say a variation. I used a GT2 band to control both retraction and extension of the arm, so I used no springs on my design. I also approached the rotation of the base a little different, trying to mantain the offsets at 0 mm from the vertex of the triangle that models the system. Finally, I designed a way to mount the motor directly on the axis of rotation to minimize inertia, that I saw is/was one of your goals...oh, and I took your idea as a quick final modification to my design about not using screws to mount the motor.
Here are some images:
[attachment 17108 Armassembly1.jpg]
[attachment 17109 Armassembly2.jpg]
[attachment 17110 Armassembly3.jpg]
[attachment 17111 Armassembly4.jpg]
Feel free to incorporate anything on your design if you want.
Great job!
I'm new here and want to contribute to the community with my grain of salt.
I have to admit I was inspired by your design, Nicolas, I liked the idea of an "inverted" delta robot with a simple motor controlling the length of the arm (it is the final goal). So I put hands on work and ended with something very similar to your design, let's say a variation. I used a GT2 band to control both retraction and extension of the arm, so I used no springs on my design. I also approached the rotation of the base a little different, trying to mantain the offsets at 0 mm from the vertex of the triangle that models the system. Finally, I designed a way to mount the motor directly on the axis of rotation to minimize inertia, that I saw is/was one of your goals...oh, and I took your idea as a quick final modification to my design about not using screws to mount the motor.
Here are some images:
[attachment 17108 Armassembly1.jpg]
[attachment 17109 Armassembly2.jpg]
[attachment 17110 Armassembly3.jpg]
[attachment 17111 Armassembly4.jpg]
Feel free to incorporate anything on your design if you want.
Great job!