1, The application of induction heating technology to heat the tool clamping part on the handle, so that its diameter will expand; 2. Then put the cold shank into the hot handle; 3. Cool the clamping part of the tool handle to restore its diameter to the initial size and clamp the tool; 4. When taking out, due to the induction heating of the tool and the handle together, the tool with the same thermal expansion coefficient can not be used for clamping.