Multi-axis automatic tool-changing system

A multi-axis automatic tool-changing system for an automatic machining center, the machining center comprising a workpiece-holding table, a mainframe, a tool magazine disposed adjacent to one side of the mainframe, and a plurality of tool-changing arms;

• the tool magazine including a plurality of tool pots, and each tool pot being used for an insertion of a tool;
• the multi-axis automatic tool-changing system being characterized in that:
• the tool magazine is disposed with a plurality of tool-changing positions;
• the mainframe is disposed with a plurality of machining devices;
• between each machining device and each tool-changing position is disposed one of the tool-changing arms, each tool-changing arm includes an axis at a center thereof and is driven by a driving device to rotate around its axis, each tool-changing arm further includes a first end tool-taking groove and a second end tool-taking groove, each of the tool-taking grooves of a first of the tool-changing arms opens towards a first circumferential direction with respect to the rotation of the tool-changing arms, each of the tool-taking grooves of a second of the tool-changing arms opens towards the opposite circumferential direction, and the axes of rotation of the tool-changing arms are offset from one another;
• each tool pot located correspondingly to a respective one of each of the tool-changing positions is controlled by a tool-reversing unit, so as to make the tool pot and the tool thereof parallel to the longitudinal axis of a respective one of the machining devices, then each tool-changing arm utilizes its first end and the second end tool-taking grooves to grasp and exchange tools between the machining devices and the tool-changing positions.