Bar cutting machine

The utility model discloses a bar cutting machine which comprises a base, a recycling box is fixedly connected to the top of the base, a sieve plate is fixedly connected in the recycling box, a lifting table is arranged above the base, a collecting groove is formed in the bottom of the lifting table, and a cutter is arranged in the collecting groove. A collecting mechanism capable of absorbing splashing chippings and smoke generated by cutting the bars is arranged in the collecting groove. The collecting mechanism comprises an outer guide pipe fixedly connected in the collecting groove, a plurality of first suction pipes are connected to the bottom of the outer guide pipe in a penetrating mode, and a plurality of connecting pipes are connected to the outer guide pipe in a penetrating mode. According to the bar cutting machine, chippings generated when tungsten molybdenum bars are cut can be conveyed into the collecting box to be collected through the arranged collecting mechanism, meanwhile, smoke is discharg