Trimming device for circular arc of rotary part

The utility model provides a trimming device for a circular arc of a rotary part. The trimming device for the circular arc of the rotary part is characterized by comprising a head frame, a back frame and a grinding and trimming wheel used for grinding a to-be-trimmed work-piece, wherein the head frame and the back frame are arranged on a base; the to-be-trimmed work-piece is located between the head frame and the back frame; the head frame can rotate under the driving of a servo motor; a driving plate is fixed on the front side of the to-be-trimmed work-piece; a driving rod is arranged on the back side of the head frame; the head frame can drive the driving plate and the to-be-trimmed work-piece to rotate by virtue of the driving rod; the grinding and trimming wheel is arranged on a wheel axle; the wheel axle can rotate under the driving of a variable-frequency motor. The trimming device for the circular arc of the rotary part can control grinding pressure and grinding relative speed, and further can control processing removal rate, increase processing precision of rotary parts by virtue of multiple times of trimming and continuous approaching, and realize low-cost, high-efficiency and intelligent trimming operation of the rotary parts.