Hey everyone, my teammates and I have a project to build a robot arm so we decided to build a 4 DOF robot arm, we were having a little trouble with the joints of the arm however. When calculating the torques needed at every joint, we got values of:
T1 = 130 Nm
T2 = 68 Nm
T3 = 9 Nm
We wanted to use a servomotor as our source of motion. however when looking at servomotors, we noticed that they all offer less then 1 Nm torque. Is this normal or would we have to introduce a sort of gear system to increase the torque at the joint? As a reference, we used to torque calculator created by robotshop too make sure we have the proper values!
Please let me know a solution for this problem. Thank you!