Right-angle coordinate robot refers to a multi-purpose manipulator that can realize automatic control, repeatable programming, multiple degrees of freedom, and the degree of freedom of movement to establish a spatial right-angle relationship. Also known as large rectangular coordinate robot, also known as truss robot or gantry robot, its working behavior is mainly achieved by completing linear motion along the X, Y and Z axes.
Joint robot, also known as joint manipulator or multi-joint robot, its joint motion is rotation, similar to human arm. Joint robot is one of the most common forms of industrial robots in the industrial field today, and it is suitable for mechanical automation in many industrial fields. For example, automatic assembly, painting, handling, welding and other work can be classified according to the structure.
What are the differences between rectangular coordinate robots and joint robots?
1、 Working space and carrying capacity:
(1). The length of standard single piece of rectangular coordinate type is 6m, which can reach 100m after assembly; The working space of the combined gantry robot can be a very three-dimensional space. The single bearing capacity is 10-200kg, and the special structure can reach 2400 Kg.
(2). The maximum working radius of the joint type is 3m, and it can work at any angle within the effective radius. There are several specifications of 5~20Kg for carrying capacity, but the maximum is 1300Kg, which is very expensive at this time.
2、Working accuracy
(1). Rectangular coordinate type: due to its simple structure, the repeated positioning accuracy is 0.05mm, and the lead screw type can reach 0.01mm or even higher.
(2). Joint type: repetitive positioning accuracy 0.06mm, light load small radius 0.02mm, heavy load accuracy 0.2mm.
3、Combination mode
(1). There are various combinations of rectangular coordinate type, such as gantry type, cantilever type, wall-mounted type, etc. According to different loads, travel, functions and special space requirements, products can be customized for customers. At the same time, the rotation axis and the rotation axis can be extended on the basis of the X, Y and Z axes to form a 5-DOF and 6-DOF robot.
(2). The joint type can be subdivided into 6-DOF robots, Scara robots and four-link robots, with relatively few types, and much less selectivity and flexibility than the rectangular coordinate type.
4、Mechanical installation and maintenance
(1). The rectangular coordinate type is a modular product, which can be disassembled, replaced or maintained by users. All mechanical parts are general supplies, with low maintenance costs.
(2). The joint type is highly integrated and integrated, but requires professional personnel to carry out mechanical installation. The installation space is smaller than the rectangular coordinate type, but its working space is its entire working radius, and the working area needs to be protected, so the total floor area of the equipment is not less than the rectangular coordinate type.
5、Software programming operation and maintenance
(1). From the electrical system to the rectangular coordinate type of the upper computer, it is open and flexible. The programming is simple, the user can expand at will, and the control is simple and easy to operate. Simple program problems and hardware failures can be handled by customers themselves, such as replacing drive motor, PLC, etc., with low maintenance costs.
(2). Articulated robot: software system integration and direct call of library functions are its software advantages. However, programming and control must be completed by the supplier through professional training (the manufacturer's software programming cost is 300 yuan/hour), and special software needs to be charged.
Maintenance and repair are completely controlled by people. Due to the incompatibility of brands, hardware failures must be directly provided by the supplier or manufacturer, which is not a common product in the market, and the cost is high.