The loading and unloading manipulator of CNC machine tool is mainly composed of three parts, which are divided into three parts: the actuator, the drive mechanism and the control system. The hand is mainly used to hold the workpiece (or tool). There are many structural forms according to the shape, size, weight, material and operation requirements of the object to be held. The following robot system integration manufacturer will introduce the functions of CNC machine tool manipulator:

1. The resolution of the manipulator is mainly determined by the system design parameters, and is affected by the performance of the position feedback detection unit. At the same time, the resolution is divided into programming resolution and control resolution.

2.  Accuracy of robot arm: The accuracy of robot arm mainly depends on mechanical error, control algorithm and system resolution. The errors of manipulators are mainly caused by transmission errors, joint clearances and the flexibility of linkage mechanisms. Transmission error is caused by gear tooth error, pitch error and other problems; The joint clearance is caused by the bearing clearance at the joint, harmonic backlash, etc; The flexibility of the linkage changes with the position and load of the manipulator.

3. The position repeatability accuracy of the manipulator: statistical data about the accuracy. Even under the same environment, condition, action and command, each action position of any manipulator cannot be completely consistent, and there will be some errors. But these errors are within a certain range that can be controlled.

When testing the position repetition accuracy of the manipulator, the more times of repeated tests at different speeds and different orientations, the more accurate the evaluation of position repetition accuracy will be. Truss manipulator company prompts that since the position repetition accuracy is not affected by the load change, the position repetition accuracy is usually used as an important indicator of the manipulator level in the teaching/reproduction mode.