Analysis of ABB Collaborative Robot Family Technology (3)

  • 2021-04-16
This collaboration uses a different security policy, separating speed from security design. Common collaboration is contact, that is, the body senses the force when the human body collides and stops in time. Whether it is current loop control, force sensor, or electronic skin, it is all this strategy; Even if the non-contact electronic skin is a little better than the contact skin, it is still difficult to solve the problem of blind spots. After all, at this time, people are in direct contact with the body or the distance is very short. Even if there is precise force control, what if the robot is holding a steel needle at the end and happens to approach the human eyes? And collaborative robots are often criticized for sacrificing efficiency and precision.

To bridge the gap between industrial and collaborative robots, the CRB 1100 separates speed from safety. In terms of speed, the CRB 1100 retains the design of the industrial robot, that is, the CRB 1100 is essentially the IRB 1100, but with the addition of a four-axis interactive light and a "detachable guided programming device" at the end, presumably a 6D mouse. Therefore, CRB 1100 can reach more than 5m/s at the level of industrial robots, and it can be used as IRB 1100 is used.

Security is in the form of laser scanners. When I first looked at the photos, I saw something yellow like rape. How could it look like an AGV's lidar? Check it again and, well, it's Sick's Secure Laser Scanner Microscan 3. Moreover, said in front of "rape yellow" is not casually called, this is the official name, is not very pictorial sense. The principle is also simple, is to perceive the human body through the laser scanner, no person, high-speed movement, someone when the robot pause. In this way, not only to meet the industrial needs of high speed but also to meet the security of collaboration.

However, this product does pass the safety regulations related to collaboration from the certification point of view, it is a safe robot, but if you look at the collaboration, it is also a little controversial. After all, it seems, this product is equivalent to an invisible fence, a robot is to use iron fence wrapped up, before then, the safety grating, the door into the invisible, ABB, this removes the "fence" whole, become invisible, but as long as the people close to the robot, the robot stopped, so did not reach people strictly Shared with robot working space, You can even think of places where you can collaborate

The maximum scanning Angle of SICK product is 275°, which means there is a range of 85° that can not be scanned by a laser. This range must be designed to be inaccessible to human beings, which is not a big problem. Originally, the configuration of CRB 1100 is an asymmetric design. The backside work is rarely used, and it is estimated that the manual of CRB 1100 will put special emphasis on the protection of this small space, otherwise if the customer ignores this blind area, the consequences will be disastrous.


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