To much torque robotic arm

Discussion in 'General Electronics Chat' started by moh, Dec 7, 2009.

  1. moh

    Thread Starter Member

    Apr 23, 2009

    I was trying to calculate the torque for my robotic arm from this website calculator

    Here is the spec

    motor Hitec ,Torque 10 kg/cm

    L1 (Length from shoulder to elbow) 7 inches weight W1 steel frame about 5 g
    L2 (Length from elbow to wrist) 5 inches weight W2 steel frame about 4 g
    L3 (Length from elbow to gripper) 3 inches weight W3 steel frame about 2 g

    W4 object to lift 1kg

    M1 (Shoulder 1 motor ) 25g
    M2 (Elbow 2 motors) 50g
    M3 (gripper 2 motors) 50g

    I want to lift 1kg object

    I left the Joint Rotational Acceleration blank 0

    It is showing about 40kg/cm torque ,Is it correct?

    If it is true ,is there any way around it?.

    I am using arduino board
  2. cheegii


    Nov 24, 2008
    you could, just think it. goodluck
  3. moh

    Thread Starter Member

    Apr 23, 2009
    Can anyone help me guide to a topic,website where there are methods to increase torque of servo motor.
    I tried google but could not find one
  4. russ_hensel

    Well-Known Member

    Jan 11, 2009
    Use gears.
    Run over specs.
    Use 2 phase excitation on unipolar motors
    At higher speeds esp. use constant current drive.