The invention relates to a spin forming device for a seamless
metal pipe fitting, and belongs to the technical field of
processing machines for the seamless
metal pipe fitting. The device comprises a
bed body, wherein the left side of the
bed body is fixedly provided with a main shaft box driven by a main shaft motor; a guide rail is fixedly arranged on the right side of the
bed body and is provided with a large
carriage and a
tailstock carriage from left to right in turn in a movable fit mode; the front and rear parts of a table top on the left side of the large
carriage are connected with aspinning wheel middle carriage provided with a
spinning wheel and a top wheel middle carriage provided with a top wheel, and the two middle carriages can transversely move relative to the large carriage; a
spinning component consisting of a fixing plate, a
roller bearing and a hollow shaft is fixedly arranged on a table top on the right side of the large carriage; the
tailstock carriage is fixedly provided with an auxiliary shaft box; the seamless
metal pipe fitting to be processed is sleeved in the
spinning component; the left and right ends of the seamless metal
pipe fitting to be processedare connected with the main shaft box and the auxiliary shaft box; and the external surface of the seamless metal
pipe fitting to be processed is tangent to the spinning wheel and the top wheel. The device has a simple structure and low production cost and is convenient to operate.