Shaft arc spraying device

The invention relates to an arc spraying device of shaft parts, comprising a spray gun; the spray gun is fixed on a stretching mechanism of the spray gun; the stretching mechanism of the spray gun is installed on a longitudinal moving mechanism; the longitudinal moving mechanism is fixed on a longitudinal side of a spraying tool through a connecting frame; the spraying tool is clamped and the shaft parts are driven to rotate. In the invention, the spraying gun is fixed on the stretching mechanism of the spraying gun and the stretching mechanism of the spraying gun is installed on the longitudinal moving mechanism. Through clamping the spraying tool and driving the shaft parts to rotate, the purposes of automatic spraying of the shaft parts, reduction of labor strength for operators, high production efficiency, uniform spraying thickness and good spraying quality can be achieved.