Profiling cutting machine of elbow single-punch groove

The embodiment of the utility model discloses a profiling cutting machine of an elbow single-punch groove which includes a working platform, a reducer base, a reducer, a motor, a cantilever and a vertical rod; the profiling cutting machine of the elbow single-punch groove also includes a guide plate fixed on the vertical rod and a profiling tracking mechanism arranged on the guide plate; the details of the profiling tracking mechanism include a box type sliding block, an optical axis arranged inside the box type sliding block, a spring sleeved on the optical axis, guide blocks fixedly arranged at the two ends of the optical axis, a burning torch chuck arranged on the optical axis, a burning torch arranged on the burning torch chuck, an installation frame arranged at any position which can lead the positions of the installation frame and the burning torch to be unchanged, and a profiling wheel arranged on the installation frame of the profiling wheel. As the profiling tracking mechanism is adopted, the profiling cutting machine of the elbow single-punch groove effectively overcomes the errors caused by irregular workpiece and realizes the distance tracking of the burning torch on a tubular wall, thereby being capable of obtaining grooves with consistent heights and having good cutting quality.