To much torque robotic arm

Thread Starter

moh

Joined Apr 23, 2009
19
Hi,


http://www.societyofrobots.com/robot_arm_calculator.shtml

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
 

Thread Starter

moh

Joined Apr 23, 2009
19
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
 

russ_hensel

Joined Jan 11, 2009
825
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
Use gears.
Run over specs.
Use 2 phase excitation on unipolar motors
At higher speeds esp. use constant current drive.
 
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