Method for uniform heat treatment of drilling tool

The invention belongs to the technical field of drilling tool production and processing, and provides a uniform heat treatment method for a drilling tool, which comprises the following steps of: bundling a plurality of drilling bits in rows into groups, placing four rows of drilling bits on a material taking and placing mechanical arm, and placing the four rows of drilling bits on four groups of support frames arranged in a heating furnace by the material taking and placing mechanical arm; the head of the drill bit is clamped above the supporting frames, the tail of the drill bit is suspended, and the clamping stations of the four sets of supporting frames to the drill bit are distributed in the heating furnace in the cross direction. The drill bit is in a heating environment in a suspended mode under the supporting action of the four sets of supporting frames, and compared with a frame structure in the prior art, the supporting frames are much simplified, so that the drill bit can be evenly heated in a heat