The application of the robot in detecting the grasp force system

How force sensors can be applied to robots:

1. Constant force

Torque sensors were first manufactured for grinding, polishing and other applications. Because these applications are difficult to automate, the robot needs some force feedback to determine whether it is pushing hard enough.

By introducing force feedback loops into your program, you can easily automate these applications and achieve consistency in the manufacturing process. In this case, you need to use an external device instead of the embedded solution provided by the robot manufacturer.

2. Target positioning

We often come into contact with customers who often believe that the only way to locate and quantify components is through the use of visual sensors. But it's not the only solution. It is undeniable that visual system is a good way to locate or quantify parts, but it is also feasible to use force sensors to find and detect parts. It's one thing to determine where they are on the X-y plane, it's another thing to determine their height. In fact, to do so requires a 3D vision system. If it's a bunch of objects, you don't need to know the exact size of the whole thing, you just need to look in that pile every time. All the robot has to do is determine the height of the pile and adjust the height of its grasp.

Another search feature that USES force sensors is the sensor's "free mode." It is possible that the parameters of the FT sensor are not fully utilized. "Free mode" or "zero gravity" mode will let you "free" the robot's axis, which will enable it to improve its compliance. For example, if you want to tighten a part on a CNC machine tool, you can free up two shafts for the part to close perfectly while still maintaining some grip. This allows the force to be applied entirely at the center of the parts, with no additional force on the axis of the robot.

3. Repeat

If you're thinking about using a robot for assembly tasks, you want the robot to be able to do the same tasks over and over again. However, one of the reasons assembly tasks are difficult to automate is that they require force testing by an operator. By introducing the FT sensor, you can feel the external force applied during the assembly.

A robot needs to apply very precise force when it installs a battery in a cell phone. As these parts are easily damaged, it is difficult to assemble them in good condition. This is why a very low force threshold is set to prevent misalignment and damage of components.

4. Weigh things

The above application is to separate the orange and blue hockey puck. However, the way we do it has nothing to do with their color. Actually, it has to do with their weight. The orange puck is heavier than the blue puck, and sensors can tell them apart depending on their weight.

How can force sensors be applied to robots

It can also be used to distinguish different parts that are similar in appearance. However, in real life, knowing if you have the right object in your hand, or if it has fallen off, is very helpful and can really help you in your production process. Torque sensors can easily achieve this.

5. Manual boot

Most collaborative robots are manually guided by the use of built-in FT sensors, but traditional industrial robots do not have such sensors built in. That's why your traditional industrial robot needs an FT sensor. With it, you can manually guide the teaching robot instead of using the teaching device. With only one FT sensor, the robot can be taught by setting the starting and ending points of the robot, as well as the linear trajectory in the middle.