Before proceeding with the description of my work, I will briefly explain what a delta robot is and what its
possible applications are.
A delta robot consists of three arms connected to universal joints at the base. The key design feature is the
use of parallelograms in the arms, which maintains the orientation of the end effector (1). Delta robots are
commonly used for grasping and packaging in factories because they can be quite fast.
Referring to figure 1, this kind of robot has two platforms: the upper platform (1) with three motors (n.3)
mounted on it, and the lower platform (n.8) with an end effector (n.9). The platforms are connected by
three arms that form three parallelograms – one for each side. The parallelograms restrain the orientation
of the lower platform in order to keep it parallel to the working surface (table, conveyor belt and so on).
The motors (n.3) set the position of the arms (n.4) and, thereby, the XYZ-position of the end effector, while
the fourth motor (n.11) is used to rotate the end effector (2).
A delta robot has four degrees of freedom; three translational and one rotational.
However, the robot that I have built only has three degrees of freedom. In fact, it cannot turn about itself.
The greatest advantage of delta robots is speed. Typically, when a robot arm has to move not only a
payload, but also all servos in each joint, the only moving part of the delta robot is its frame, which is
usually made of lightweight composite materials.
Before proceeding with the description of my work, I will briefly explain what a delta robot is and what its possible applications are.A delta robot consists of three arms connected to universal joints at the base. The key design feature is the use of parallelograms in the arms, which maintains the orientation of the end effector (1). Delta robots are commonly used for grasping and packaging in factories because they can be quite fast.Referring to figure 1, this kind of robot has two platforms: the upper platform (1) with three motors (n.3) mounted on it, and the lower platform (n.8) with an end effector (n.9). The platforms are connected bythree arms that form three parallelograms – one for each side. The parallelograms restrain the orientation of the lower platform in order to keep it parallel to the working surface (table, conveyor belt and so on). The motors (n.3) set the position of the arms (n.4) and, thereby, the XYZ-position of the end effector, while the fourth motor (n.11) is used to rotate the end effector (2).A delta robot has four degrees of freedom; three translational and one rotational.However, the robot that I have built only has three degrees of freedom. In fact, it cannot turn about itself.The greatest advantage of delta robots is speed. Typically, when a robot arm has to move not only a payload, but also all servos in each joint, the only moving part of the delta robot is its frame, which is usually made of lightweight composite materials.
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