Box cover clamp

The utility model relates to the technical field of box cover machining, in particular to a box cover clamp. The problems that multiple times of clamping are needed, and the clamping performance is poor are solved. The device comprises a bottom plate, the bottom plate is detachably connected with at least two limiting blocks, the two limiting blocks abut against the two opposite sides of a box cover respectively, the box cover is pre-positioned through the limiting blocks, the bottom plate is further provided with at least three pressing parts, and when the box cover is pre-positioned, the outer end of the box cover is fixed through the pressing parts. The three pressing components are distributed on the bottom plate in a three-point mode. Final clamping of the box cover is achieved, pre-positioning of the box cover can be achieved, one-time clamping can be completed, various machining requirements can be met, clamping is rapid, the box cover is effectively supported, the installation stability is improved, t