The invention relates to a 
cutting and chamfering control device and a 
pipe cutting machine, in particular to the 
cutting and chamfering control device used for cutting and chamfering thin-wall round pipes and the 
pipe cutting 
machine used for installing, clamping and cutting a plurality of thin-wall round pipes in one step. The cutting and chamfering control device comprises a linear guide rail and a cutting and chamfering 
assembly, wherein the cutting and chamfering 
assembly is glidingly arranged on the linear guide rail, and is connected with a chambering control 
assembly, the chambering control assembly comprises a support frame which is provided with a vertical plate and is fixedly arranged on the cutting and chamfering assembly, an axially fixed and rotatable screw rod is arranged on the vertical plate, a regulating 
handle is fixedly arranged on the screw rod, the screw rod pulls the vertical plate, and one end of the screw rod can slide relative to the linear guide rail and is connected with a stop support rod assembly through screw threads. The 
pipe cutting 
machine comprises at least one group of cutting and chambering control devices. On the basis of meeting the material pipe cutting requirements, the precision of inner and outer edge chambering of the two end surfaces of 
cut openings can be precisely controlled, the requirement of installing, clamping and cutting a plurality of large-pipe-
diameter and long-dimension materials pipes in one step is met, and in addition, the roundness of the 
cut material pipes can be ensured.