Novel multi-axis machine tool machining zero point positioning mechanism

The utility model relates to a novel multi-axis machine tool processing zero-point positioning mechanism in the field of zero-point positioning systems, which comprises a workbench, a positioning and clamping assembly and a quick-release assembly, the positioning and clamping assembly is arranged in the middle of the workbench, the quick-release assembly comprises a positioning plate and a positioning bolt, the positioning bolt is detachably mounted in the positioning and clamping assembly, and the quick-release assembly is connected with the positioning plate. A first reference plane is arranged at the upper end of the workbench, a plurality of positioning protrusions are arranged on the first reference plane in an annular array mode, deformable plastic blocks are arranged in the middles of the positioning protrusions, guiding slopes inclining inwards are arranged on the two sides of the positioning protrusions, and a plurality of positioning grooves used for being matched with the positioning protrusions ar