Clamping and positioning device for automobile generator end cover machining

The invention relates to the technical field of workpiece clamping devices, in particular to an automobile generator end cover machining clamping and positioning device which comprises a bottom plate and a C-shaped plate arranged above the bottom plate, an air cylinder is arranged between the bottom plate and the C-shaped plate, a three-jaw locking mechanism is arranged in the middle of the top face of the C-shaped plate, and a motor end cover is placed on the outer edge of the three-jaw locking mechanism. The three-jaw locking mechanism comprises three T-shaped rods which are arranged at equal angles, and the three T-shaped rods are driven by the air cylinder to rotate and limit and fix the motor end cover. Compared with a traditional positioning tool, the device is specially designed according to the shape of the motor end cover, the use convenience is improved, meanwhile, fixation is firm, the current use requirement is met, and application and popularization are facilitated. 本发明涉及工件夹紧装置技术领域，具体涉及一种汽车发电机端盖加