Automatic clamping, centering and rubber tapping machine with incongruous crank

The invention discloses an automatic clamping, centering and rubber tapping machine with an incongruous crank. The automatic clamping, centering and rubber tapping machine with an incongruous crank comprises an upper clamping device, a lower clamping device, a gear and rack circular motion device and a cutter axial motion device composed of a lead screw polished shaft. The automatic clamping, centering and rubber tapping machine with an incongruous crank has the beneficial effects that a rubber tree is centered and clamped through the clamping devices with an incongruous crank, and cut by a compound motion of a cutter clamping mechanism. The automatic clamping, centering and rubber tapping machine with an incongruous crank can conduct self-centering and clamping and meanwhile also designs the upper clamping device and the lower clamping device according to different sizes of upper and lower girths of a rubber tree. In addition, the compound motion of the cutter clamping mechanism ensures accuracy and stabilit