Gapped non-full-round gear ring machining method

A gapped non-full-round gear ring machining method is characterized by comprising the following steps that firstly, a through groove is formed in a gear ring blank through linear cutting; secondly, the cut-off portion is put into the through groove and is fixed through spot welding; thirdly, sunken grooves are milled in the two end faces of the gear ring blank on two sides of the through groove, connecting screw holes are drilled in the two sides of the through groove in the milled sunken grooves, and a connecting plate is arranged and is fixedly connected with the gear ring blank by using bolts; fourthly, positioning pin holes are drilled in the connecting plate, and pins for tight fit are inserted into the positioning pin holes; fifthly, the cutting block inserted into the through groove is removed from the through groove; sixthly, the gear ring blank completed in the fifth step is subjected to low-temperature tempering treatment to remove internal stress produced in the machining; seventhly, machining of a