Clamping device and turbine blade machining device based on clamping device

The utility model relates to the technical field of blade machining, in particular to a clamping device and a turbine blade machining device based on the clamping device. In order to solve the problems that in the machining process of a traditional machining device for machining a lower-sequence steam passage, a blade is difficult to clamp, so that an assembly inner back molded line is deformed, assembly is affected, vibration is easily generated in the machining process, and the machining precision is affected, clamping grooves are formed in the front end and the rear end of the bottom of a clamp body correspondingly, and the two clamping grooves are symmetrically formed; an inverted T-shaped groove is formed in the upper end of each clamp body in the horizontal direction, the top end and the two ends of each T-shaped groove are communicated with the clamp bodies, the T-shaped bolts are arranged in the T-shaped grooves in an inverted mode, the pressing plates are arranged on the T-shaped bolts in a sleeving