Diamond drill bit with self-adaptive cushioning module

A diamond drill bit with a self-adaptive cushioning module, comprising a drill body (912) and a blade (1) extending from the drill body (912), the blade (1) being provided with cutting teeth (2), at least one cushioning module (3) being provided on the drill bit (910), characterized in that the cushioning module (3) is rotatably connected to the drill bit body (912), and the cushioning portion of the cushioning module (3) is eccentrically arranged relative to a rotation axis of the cushioning module (3);

• when the cushioning portion of the cushioning module (3) in the initial position bears the impact force from the formation rock, the cushioning portion absorbs the impact load, reduces the impact force of the blade cutting teeth (2), and cushions the cutting teeth (2);
• the cushioning portion of the cushioning module (3) is under the action of the force in contact with the bottom hole rock, and rotates relative to the cutting teeth (2) to perform a shrinking trend movement, so as to reduce or avoid the impact of the cushioning module (3) on the intrusion depth of the cutting teeth (2);
• when the cushioning portion of the cushioning module (3) is out of contact with bottom hole rock or when the contact resistance torque is less than reset torque, under the action of a reset mechanism (303), the cushioning portion rotates to the initial position of the cushioning portion in a rotational manner, so as to realize a protruding tendency movement relative to the cutting teeth (2);
• the position of the cushioning portion relative to the cutting teeth (2) is raised, which plays a cushioning role for the subsequent impact of the cutting teeth (2).