From the perspective of histology, robots can be divided into two categories: tandem robots and parallel robots. The tandem robot takes the open-loop organization as the prototype of the robot organization; A parallel robot is a robot that has one or several closed-loop joints whose coordinates are related to each other.
What is a tandem bot?
Tandem robot is an open kinematic chain robot, which is formed by a series of connecting rods through rotating joints or moving joints in series. The driver is used to drive the movement of each joint, and then drive the relative motion of the connecting rod to make the end welding torch reach a suitable position.
What is a Delta Robot?
A parallel robot refers to a closed-loop robot that is driven in parallel by connecting at least two independent motion chains and organizing two or more degrees of freedom through at least two independent motion chains.
Parallel robot and traditional industrial tandem robot in the use of complementary relationship, it is a closed motion chain, and tandem robot comparison, generally by up and down motion channels and two or more than two more motion branch chains, between the motion channel and the motion branch chain constitute one or more closed-loop organizations, after changing the movement of each branch chain, so that the whole organization has a plurality of operating degrees of freedom.
What are the advantages and disadvantages of a parallel robot compared to a tandem robot?
1. To put it simply, a tandem robot is like a person holding something in one hand, and a parallel robot is equivalent to two hands holding things together.
2. The tandem robot is more sophisticated, with the advantages of simple structure, low cost, simple control, large movement space, etc., and has been successfully used in many fields, such as various machine tools, assembly workshops, etc.
3. Compared with tandem robots, the research on parallel robots started late, and there are still many theoretical problems that have not been solved.
4. The parallel robot has the advantages of large stiffness, strong bearing ability, high precision, and small inertia of the end piece, and has significant advantages compared with the tandem robot in the occasion of high speed and large bearing capacity. There have been many successful use cases. For example, motion simulators, delta robots, etc.
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