Reverse processing of the sinking groove on the inside of stainless steel parts

Our factory has been engaged in the transshipment of aerospace products of a large aerospace company in the United States. There are many swash plate parts, and many swashplates have common inner sinking features, as shown in Figure 1. In the absence of special equipment, we use the ordinary milling machine to smash the processing method: the parts are clamped and clamped on the milling machine as shown in the figure, the shank is guided by the hole A, and then the boring head is mounted on the arbor. Formed inside and outside.