Describe any two joint types used in Robotic arm and wrist.

Describe any two joint types used in Robotic arm and wrist.
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2 Answers

Answer :

Joint used in Robotic arm and wrist.

[1] Rotational joint

[2] Linear joint

[3] Twisting joint

[4] Orthogonal &

[5] Revolving joint

Rotational Joint: Rotational joint can also be represented as R – Joint. This type will allow the joints to move in a rotary motion along the axis, which is vertical to the arm axes.

Linear Joint: Linear joint can be indicated by the letter L – Joint. This type of joints can perform both translational and sliding movements. These motions will be attained by several ways such as telescoping mechanism and piston. The two links should be in parallel axes for achieving the linear movement.

Twisting Joint: Twisting joint will be referred as V – Joint. This joint makes twisting motion among the output and input link. During this process, the output link axis will be vertical to the rotational axis. The output link rotates in relation to the input link.

Orthogonal Joint: The O – joint is a symbol that is denoted for the orthogonal joint. This joint is somewhat similar to the linear joint. The only difference is that the output and input links will be moving at the right angles.

Revolving Joint: Revolving joint is generally known as V – Joint. Here, the output link axis is perpendicular to the rotational axis, and the input link is parallel to the rotational axes. As like twisting joint, the output link spins about the input link.
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Answer :

Joint types used in robotic arm:

1) Linear Joint or Prismatic joint:

The linear joint provides the translational sliding motion between the input and output link.

The axes of the links are parallel to one another.

The linear joint as shown in fig.(a)

2) Orthogonal Joint:

The orthogonal joint provides the translational sliding motion between the input and output link.

The axis of the output link is perpendicular to that of the input link.

The orthogonal joint as shown in fig.(b)

image

3) Rotational joint:

The rotational joint provides the relative rotational motion between the input and output link.

The axis of rotation is perpendicular to the axes of input and output link.

The rotational joint as shown in fig.(c)

4) Twisting Joint:

The twisting joint provides the relative twisting motion between the input and output link.

The axis of rotation is parallel to the axes of input and output link.

The twisting joint is shown in fig.(d)

5) Revolving joint:

The revolving joint provides the relative rotational motion between the input and output link.

The axis of input link is parallel to the axis of rotation of the joint.

The axis of output link is perpendicular to the axis of rotation of the joint.

The revolving joint is shown in fig.(e)

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