Clamp for circular shaft hole drilling

The invention discloses a clamp for circular shaft hole drilling. The clamp comprises a base plate, a first clamp body is installed on the top of the base plate, a second clamp body is installed on one side of the first clamp body, clamping portions are arranged on the first clamping tool body and the second clamping tool body correspondingly, a reverse pinch plate is installed on the top of the first clamp body, dust absorption ports are formed in the joints of the reverse pinch plate and the corresponding clamping portion, a through pipe is installed on the top of the reverse pinch plate, a dust collecting box is installed on one side of the through pipe, and a dust absorption micro-draught-fan is installed in the dust collecting box. According to the clamp for circular shaft hole drilling, the first clamp body and the second clamp body are both of dismountable structure design, and thus dismounting and overhauling are facilitated; meanwhile, the single clamp body can be replaced when the clamp body is worn