advantage
1. High speed and high precision
In terms of speed: The joint structure of planar articulated robots is relatively simple, and their movements are mainly concentrated in the plane, reducing unnecessary actions and inertia, allowing them to move quickly within the working plane. For example, on the assembly line of electronic chips, it can quickly pick up and place tiny chips, and its arm movement speed can reach a high level, thereby achieving efficient production.
In terms of accuracy: The design of this robot ensures high positioning accuracy in planar motion. It can accurately position the end effector at the target position through precise motor control and transmission system. In general, its repeated positioning accuracy can reach ± 0.05mm or even higher, which is crucial for some assembly work that requires high accuracy, such as the assembly of precision instrument components.
2. Compact and simple structure
The structure of a planar articulated robot is relatively simple, mainly composed of several rotating joints and linkages, and its appearance is relatively compact. This compact structure results in a low occupancy rate of workspace, making it easy to install on production lines without taking up too much space. For example, in the production workshop of small electronic products, due to limited space, the compact structure advantage of SCARA robots can be fully reflected. It can be flexibly placed next to the workbench to operate various components.
A simple structure also means that the maintenance of the robot is relatively easy. Compared to some complex multi joint robots, it has fewer components and less complex mechanical structure and control system. This makes maintenance personnel more convenient and efficient in carrying out daily maintenance, troubleshooting, and component replacement, reducing maintenance costs and repair time.
3. Good adaptability to planar motion
This type of robot is designed specifically for operations within a plane, and its motion can adapt well to the working environment on a plane. When carrying out tasks such as material handling and assembly on a flat surface, it can flexibly adjust the arm posture and position. For example, in the plug-in operation of a circuit board, it can accurately insert electronic components into corresponding sockets along the plane of the circuit board, and efficiently operate according to the layout of the circuit board and the order of the plug-ins.
The working range of planar articulated robots in the horizontal direction can usually be designed and adjusted according to actual needs, and can effectively cover a certain area of the working area. This makes it highly applicable in flat work scenarios such as packaging and sorting, and able to meet work requirements of different sizes and layouts.
Disadvantage
1. Restricted workspace
Planar articulated robots mainly operate within a plane, and their vertical range of motion is relatively small. This limits its performance in tasks that require complex operations in the height direction. For example, in the process of automobile manufacturing, if robots are required to install components at higher positions on the vehicle body or assemble components at different heights in the engine compartment, SCARA robots may not be able to complete the task well.
Due to the fact that the workspace is mainly concentrated on a flat surface, it lacks the ability to process or manipulate complex shapes in three-dimensional space. For example, in sculpture production or complex 3D printing tasks, precise operations are required in multiple angles and height directions, making it difficult for planar articulated robots to meet these requirements.
2. Low load capacity
Due to the limitations of its structure and design purpose, the load capacity of planar articulated robots is relatively weak. Generally speaking, the weight it can carry is usually between a few kilograms and a dozen kilograms. If the load is too heavy, it will affect the robot's movement speed, accuracy, and stability. For example, in the handling task of large mechanical components, the weight of these components may reach tens or even hundreds of kilograms, and SCARA robots cannot bear such loads.
When the robot approaches its load limit, its performance will significantly decrease. This may lead to issues such as inaccurate positioning and motion jitter during the work process, thereby affecting the quality and efficiency of the work. Therefore, when selecting a planar articulated robot, it is necessary to make a reasonable selection based on the actual load situation.
3. Relatively insufficient flexibility
The motion mode of planar articulated robots is relatively fixed, mainly rotating and translating around the joints in the plane. Compared to general-purpose industrial robots with multiple degrees of freedom, it has poorer flexibility in dealing with complex and changing work tasks and environments. For example, in some tasks that require robots to perform complex spatial trajectory tracking or multi angle operations, such as complex surface machining of aerospace components, it is difficult for them to flexibly adjust their posture and motion path like robots with more degrees of freedom.
For the operation of irregularly shaped objects, planar articulated robots also face certain difficulties. Due to its design mainly targeting regular operations within a plane, it may not be possible to accurately adjust the gripping position and force when grasping and handling objects with irregular shapes and unstable centers of gravity, which can easily lead to objects falling or being damaged.
Post time: Dec-23-2024
