Clamping device for processing engine cylinder cover

The utility model discloses a clamp, particularly a clamping device which is used for processing an engine cylinder cover and is matched with the existing machining center machine tool. The utility model is characterized in that a clamp supporting seat [3] is fixed above a rotary table [2] on a horizontal rotary table [1], the clamp supporting seat [3] is provided with a vertical rotary table [11] and a supporting shaft seat [14], the end head of a shaft [22] which is matched with the supporting shaft seat [14] is provided with a supporting shaft rotary table [6], a clamp body [8] is fixedly connected between the supporting shaft rotary table [6] and a rotary table [18] on the vertical rotary table [11], and a work-clamping device is arranged on the clamp body [8]. The utility model can ensure that a cutting tool can carry out omnidirectional machining on the cylinder cover fixed on the clamp body, clamping once can complete the machining of a complete machined surface, and the utility model achieves the aims of time saving, labour saving, high productive efficiency and low machining cost.