Tool conversion engagement carrier

The invention belongs to the field of machining and relates to a tool conversion engagement carrier. The tool conversion engagement carrier comprises a connecting pillar and an engagement pillar connected with the connecting pillar, and the outer diameter of the engagement pillar is larger than the outer diameter of the connecting pillar. At least two boring holes penetrating the engagement pillarare formed in the engagement pillar in the axial direction of the engagement pillar. By means of the tool conversion engagement carrier, the use range of universal tools is expanded, tool stations ofa machine tool are increased, and the manufacturing cost of feature tools is reduced. 本发明属于机械加工领域，涉及一种刀具转换衔接载体，包括连接柱以及与连接柱相连的衔接柱；衔接柱的外径大于连接柱的外径；衔接柱上沿衔接柱的轴向至少开设两个贯穿衔接柱的镗孔。本发明提供了一种拓展通用刀具的使用范围、增加机床刀位以及降低特征刀具的制造成本的刀具转换衔接载体。