Machining method of multi-aperture thin-wall cylindrical part

The invention provides a machining method for a multi-aperture thin-wall cylindrical part. The machining method comprises the steps of blank material polishing, appearance rough turning, inner hole machining and appearance finish turning. Wherein a workpiece is obtained after the blank material is subjected to the shape rough turning step, the workpiece is composed of a large cylindrical end and a small cylindrical end which are coaxially arranged, and the diameter of the large end is larger than that of the small end; the inner hole machining comprises the following steps of small-end drilling, large-end drilling, large-end chambering, large-end boring, small-end primary boring, large-end fine boring, small-end secondary boring, small-end hole turning and small-end inner hole fine turning. The machining surface and the clamping position are adjusted for multiple times, the workpiece is positioned and clamped through the specific clamping tool, then inner hole machining is carried out, stability and accuracy