| 摘要 |
The present invention comprises: a first motor capable of rotating forward and backward; a second motor spaced from the first motor and capable of rotating forward and backward; pulleys respectively provided to a rotary shaft of the first motor and a rotary shaft of the second motor; a frame; a moving arm having a mounting part slidably placed on the frame and of which the opposite side of the mounting part is a free end in the longitudinal direction; a carriage placed on the moving arm so as to be slidable in the direction orthogonal to the sliding direction of the moving arm; belts wound around the pulleys and connected to the carriage; and a plurality of idlers for guiding the belts, and thus can control the position of the carriage by means of the combination of force of the first motor and the second motor and can precisely control the carriage with a simple structure by means of the moving arm having the free end. |
