Special fixture for drilling motor shaft

The invention discloses a special fixture for motor shaft drilling. The special fixture comprises a bottom plate, a front pressing mechanism and a rear pressing mechanism, wherein the front pressing mechanism and the rear pressing mechanism are arranged on the bottom plate. A front pressing block of the front pressing mechanism is arranged to be a C-shaped turnover part, the lower portion of the C-shaped turnover part is hinged to the lower portion of the front side wall of a front supporting seat of the C-shaped turnover part, a vertical adjusting hole is formed in the middle of the C-shaped turnover part, an adjusting rod of the C-shaped turnover part penetrates through the vertical adjusting hole and then is in threaded connection with an adjusting nut, and when the C-shaped turnover part is turned over upwards to press the front end of a motor shaft, the motor shaft is driven to rotate. The front end of the motor shaft is pressed and fixed by the front pressing block under the action of the adjusting nut;