The utility model provides a kind of
cutting wire tensioning mechanism with linear guide structure, it includes import guide support wheel, export guide support wheel, tensioning guide column, tensioning guide seat frame and tensioning guide support wheel, the
cutting wire tensioning mechanism is cooperated by tensioning guide column and linear bearing, tensioning guide seat frame and tensioning guide support wheel can be moved along straight line stably, ensure that
cutting wire keeps stable path in the process of tensioning, improve cutting precision, by setting tensioning sensing seat frame using tension sensor, and tensioning sensing platform and tensioning sensing support wheel, the tensioning force of cutting wire can be sensed in real time, accurately, provide feedback for the adjustment of tensioning force, ensure the stability and reliability of cutting process, can satisfy the high requirement of cutting equipment to cutting wire tensioning, improve cutting quality and efficiency.