Clamp used for assembling voice coil motor rotor

The utility model discloses a clamp used for assembling a voice coil motor rotor. The clamp comprises a clamp body which is internally provided with a cylinder hole. The internal wall of the upper end of the clamp body is provided with annular step surfaces which extend upwards in steps. The upper end of the clamp body is vertically provided with multiple arc-shaped abdicated notches, of which the height is greater than the sum of the height of the annular step surfaces. Compared with clamps in the prior art, a coil and a lens bearing body can be positioned by using the clamp used for assembling the voice coil motor rotor so that concentricity of assembling of two components is ensured, characteristics of the finished voice coil motors are ensured and generation of defective products in the following assembling is reduced, relative accuracy of the two components is realized, and thus influence of accumulative error in the assembling is reduced and assembling accuracy is ensured. The main body adopts the centr