Accuracy analysis of repeated positioning of screw module and synchronous belt module:

Linear modules can be divided into ball screw and synchronous belt, steel belt, gear and rack drive according to the power driving method. Common driving methods include ball screw and synchronous belt.

The module is driven by a ball screw, and the accuracy varies depending on the screw level. The accuracy corresponding to C7 level screw: the accuracy corresponding to C5 level screw: the accuracy corresponding to C3 level screw:

Precision corresponding to P-grade ball screw:

The first concept mentioned is:

What is positioning accuracy:

What is repeated positioning accuracy:

What are the parameters related to accuracy

relatively speaking

Accuracy corresponding to synchronous belt:

Operating loss: After running for a period of time, the ball screw will inevitably experience wear and tear, resulting in backlash. If the backlash increases, there will be inaccurate repeated positioning accuracy.

The accuracy of repeated positioning is not only affected by different driving methods, but also by the use of motors, servo motors, stepper motors, and open-loop and closed-loop methods. Repetitive accuracy compensation can also cause differences in repeated positioning.