Multi-tooth cutting head and cutting test bench

The invention relates to a multi-tooth cutting head and a cutting testbed, the multi-tooth cutting head comprises a cutting tooth seat and a plurality of cutting teeth, the cutting tooth seat is provided with a plurality of cutting tooth mounting positions, and each cutting tooth is detachably and fixedly connected to one cutting tooth mounting position; the cutting test bed comprises a frame, a linear reciprocating mechanism, a guide seat, a guide rod, a rock sample cutting seat, a force sensor and the multi-tooth cutting head, the front end and the rear end of the guide rod are installed on the frame, and the guide seat is arranged on the guide rod in a sleeving mode and connected with the guide rod in a front-back sliding mode. The rock sample cutting seat and the linear reciprocating motion mechanism are both installed on the frame and located in front of and behind the guide seat respectively, the multi-tooth cutting head is connected to the front side of the guide seat through the force sensor, and the