Synchronous belt drive drives the driving pulley through the servo motor, and drives the slider to reciprocate through the synchronous belt. Its advantages are simple structure, low cost, long stroke (several meters), high movement speed and convenient maintenance. However, its limitations are also obvious: the synchronous belt is elastic and its transmission stiffness is low; Under the conditions of high-speed start-stop and frequent commutation, belt tooth wear and belt tensile creep will lead to the decrease of positioning accuracy, and the repeated positioning accuracy can only reach ±0.05~0.10mm, which is difficult to meet the design requirements of 0.02 mm.

Synchronous belt drive drives the driving pulley through the servo motor, and drives the slider to reciprocate through the synchronous belt. Its advantages are simple structure, low cost, long stroke (several meters), high movement speed and convenient maintenance. However, its limitations are also obvious: the synchronous belt is elastic and its transmission stiffness is low; Under the conditions of high-speed start-stop and frequent commutation, belt tooth wear and belt tensile creep will lead to the decrease of positioning accuracy, and the repeated positioning accuracy can only reach ±0.05~0.10mm, which is difficult to meet the design requirements of 0.02 mm.