Grooving machine

The invention discloses a grooving machine. The grooving machine comprises a rack, a conveying mechanism mounted on the rack and a grooving tool bit mounted on the conveying mechanism, wherein the conveying mechanism comprises a front conveying platform, a rear conveying platform, driving mechanisms mounted on the two sides of the front conveying platform and the two sides of the rear conveying platform, a front conveying roller, a rear conveying roller, a limiting rod body, a sliding rod body and a sliding sleeve; and the front conveying roller and the rear conveying roller are mounted between the front conveying platform and the rear conveying platform and are in linkage with the driving mechanisms, the limiting rod body is positioned between the front conveying roller and the rear conveying roller and fixed to the driving mechanisms, the sliding rod body is mounted on the limiting rod body, and the sliding sleeve is mounted on the sliding rod body. The grooving tool bit is fixedly connected with the slidin