Grinding and turnover device

The utility model relates to a grinding and turnover device, which comprises a base support, a rotating device and positioning pins and is characterized in that the rotating device is composed of two supporting bases connected through a connecting rod, and the main body of each supporting base is a semi-circle block. The middle of the upper surface of each semi-circle block is provided with a clamping groove perpendicular to the upper surface, blind holes are arranged on the circumference of the outer side of each semi-circle block at intervals, the middle of the outer side of each semi-circle block is provided with a connecting plate, and two sides of the semi-circle block arranged on the right-end supporting base are provided with limit blocks. A positioning block is respectively arranged at two ends of the upper portion of the base support, the connecting plates of the supporting bases arranged at two ends of the rotating device are in hinge connection with the two positioning blocks, the lower portion of