Automatic machining method for automobile air conditioner pipe

The invention discloses an automatic machining method for an automobile air conditioner pipe. The automatic machining method comprises the following specific steps that firstly, one end of a pipe body is stamped through a first stamping device, and a necking section is formed at one end of the pipe body; secondly, the spiral groove machining device machines an annular groove structure on the outer side of the necking section; thirdly, lubricating oil on the surface of one end of the pipe body is removed through a first oil removing device; fourthly, the end, away from the necking section, of the pipe body is sleeved with a pressing plate through an upper pressing plate device; fifthly, the end, close to the pressing plate, of the pipe body is punched through a second punching device, so that an extrusion drum structure is formed at the end of the pipe body; sixthly, the punching device conducts punching operation on the pipe body; seventhly, lubricating oil at one end of the pipe body is removed through a sec