Positioning fixture of measuring ring shape part

The utility model relates to a positioning fixture of measuring ring shape part, including base, dismounting device and closing device, the base up end be equipped with with annular part assorted holding ring, dismounting device and closing device install respectively in the base up end to use base the central axis to arrange according to the circumference array as rotation center, closing devicemakes annular part's step face and the laminating of base up end, and the base up end still is equipped with a plurality of and detects the groove, adopt the utility model provides a detect anchor clamps, large -scale annular part accomplishes location and clamping through the hoist and mount mode on anchor clamps, use closing device to accomplish compressing tightly the part, behind the completeclamping of part, measuring groove through setting up on the base is detected each overall dimension of part, detect after the completion, then make the part upwards ejecting through dismounting device and supplementary dismou