Inner support shaping device for thin-walled cylinder part machining

The utility model relates to an inner support shaping device for processing a thin-walled cylinder part, which is characterized in that a screw seat for mounting a central screw is fixed on a base, the central screw is sequentially sleeved with a limiting nut, a guide sleeve and a handle from bottom to top, the guide sleeve slides up and down along the central screw, and the guide sleeve is pressed by rotating the handle; a plurality of groups of telescopic mechanisms are uniformly distributed in the circumferential direction of the guide sleeve, each group of telescopic mechanism comprises an upper connecting rod, a lower connecting rod, a supporting inclined rod and a vertical plate, and the upper connecting rod and the lower connecting rod are respectively hinged with the guide sleeve and the vertical plate to form a parallelogram connecting rod mechanism; the lower end of the supporting inclined rod is hinged to an inclined rod support at the lower end of the center screw, and the upper end of the support