How Much Torque is Needed to Lift a 0.44m Robot Arm?

[sambeecroft]

I'm having some trouble working out the required torque for a motor to lift a robot arm for my university project.

My design is cable driven so all the power has to be transmitted thorugh cables with motors at the base.

please could anyone help me work out how much torque is required to lift the 0.44m arm?

The cable is wrapped 360 degrees around the pulley on the first joint

here's a diagram of the set up:

http://img513.imageshack.us/img513/8416/physicsforumsdiagram.jpg

Thanks a lot

 

[Xezlec]

I'm having some trouble working out the required torque for a motor to lift a robot arm for my university project.

My design is cable driven so all the power has to be transmitted thorugh cables with motors at the base.

please could anyone help me work out how much torque is required to lift the 0.44m arm?

The cable is wrapped 360 degrees around the pulley on the first joint

here's a diagram of the set up:

http://img513.imageshack.us/img513/8416/physicsforumsdiagram.jpg

Thanks a lot

You can do this yourself. If you're having trouble remembering the equations of rigid bodies, look http://en.wikipedia.org/wiki/Torque" .

 

[astrokreng]

Hello,

Thank you for reaching out for assistance with your university project. Calculating the required torque for a motor to lift a robot arm can be a complex task, but it is an essential step in the design process.

To calculate the required torque, you will need to consider several factors such as the weight of the arm, the length of the arm, the number of joints, and the type of motor being used. Since your design is cable driven, it is important to also consider the tension and friction in the cables as they will affect the overall torque required.

One approach to calculating the torque is to use the equation Torque = Force x Distance, where the force is the weight of the arm and the distance is the length of the arm. However, this is a simplified equation and may not take into account the other factors mentioned above.

A more accurate method would be to use a torque calculator or simulation software specifically designed for robot arm designs. These tools take into account all the relevant factors and can provide a more precise calculation of the required torque.

I would also recommend consulting with your university project advisor or a mechanical engineer for additional guidance and support in your calculations. They may have valuable insights and resources to help you determine the appropriate torque for your specific project.

Best of luck with your project!