Outer-clamping and inner-supporting clamp and application method thereof

The invention provides an outer-clamping and inner-supporting clamp and an application method thereof. The outer-clamping and inner-supporting clamp comprises a disc-shaped chuck clamp and workpiece claws arranged on the disc-shaped chuck clamp. The workpiece claw is composed of fan-shaped components. A profiling arc groove is formed in the top of the fan-shaped component, and T-shaped grooves are formed in the two sides of the fan-shaped component. A T-shaped block is arranged in the T-shaped groove; and a supporting block is arranged on the T-shaped block. According to the external clamping and internal supporting clamp, the contact area of the semiconductor annular part to be clamped and the clamp is increased, external clamping and internal supporting of the semiconductor annular part to be clamped are achieved, the clamping stability is high, deformation of the semiconductor annular part cannot be caused, operation is easy, the clamping requirement for field operators is low, and the clamping efficiency