How Does Robots' Four Bar Gripper Work?

Four bar grippers are commonly used in robotic systems to manipulate objects. They use a set of four connected bars to create a grasping motion. Here is a step-by-step guide on how these grippers work.

H2: Four Bar Gripper Design.

1. The gripper consists of four bars: a fixed base bar, two rotating bars, and a grasping bar.

2. The two rotating bars are connected to the base bar with hinges. These hinges allow the bars to rotate.

3. The grasping bar is connected to the two rotating bars with another hinge. This hinge forms a parallelogram shape.

4. The grasping bar is equipped with a gripping mechanism, such as a set of fingers or suction cups. .

H2: How it Works.

1. The two rotating bars are powered by actuators, such as servos or stepper motors.

2. When the actuators rotate the rotating bars, the grasping bar moves in a straight line towards or away from the object.

3. As the grasping bar moves, the parallelogram shape formed by the hinges causes the fingers or suction cups to open or close.

4. When the fingers or suction cups come into contact with the object, the actuator stops moving.

5. Depending on the grip type, the fingers may be closed around the object or the suction cups may be activated to create a vacuum seal.

6. The gripper can now pick up and move the object. .

H3: Advantages of Four Bar Gripper.

- Four bar grippers offer a simple and effective design for robotic systems.

- They are easy to control and can be adapted to a variety of objects and shapes.

- They provide a strong and reliable grip on objects, with the ability to pick up heavier items than other gripper designs.

- The parallel motion of the grasping bar ensures that the object remains secure during transport and placement.

- Four bar grippers can be used in a variety of applications, such as assembly lines, material handling, and bin picking.

In conclusion, four bar grippers are an essential component of robotic systems, providing a reliable way to manipulate objects. With their simple design and strong grip capabilities, they are a popular choice for industrial and manufacturing settings.

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