Taper key groove machining angle adjusting tool

The utility model provides a taper key groove machining angle adjusting tool which is characterized in that a clamping plate rail groove is formed in the center of a reference measuring plate, and a bearing rotating disc is arranged in the center of the clamping plate rail groove; the clamping plate is embedded in the clamping plate rail groove and arranged on the bearing rotating disc. Machining angle adjusting modules are arranged on the periphery of the top end of the clamping plate. The fixed clamping module is arranged on one side of the clamping plate; the supporting device is arranged on the side, away from the fixed clamping module, of the clamping plate. According to the utility model, the reference measuring plate, the bearing turntable, the clamping plate, the processing angle adjusting module, the fixed clamping module and the supporting device are adopted; after a shaft part needing to be machined is clamped through the fixed clamping module and the other end of the shaft part is supported by the