Thickness measuring device

The utility model discloses a thickness measuring device which comprises a four-degree-of-freedom workpiece table and a thickness measuring assembly, the four-degree-of-freedom workpiece table and thethickness measuring assembly are distributed in a spaced mode in the front-back direction, and the four-degree-of-freedom workpiece table is provided with a four-degree-of-freedom moving part and a first installation base installed at the driving end of the four-degree-of-freedom moving part. An object to be measured is mounted on the first mounting base, a part to be measured of the object to bemeasured protrudes out of the edge of the first mounting base and faces the thickness measuring assembly, the thickness measuring assembly is provided with a measuring part and a two-degree-of-freedom moving part, and the measuring part is mounted at the driving end of the two-degree-of-freedom moving part. The two-degree-of-freedom moving piece is used for adjusting the horizontal height of themeasuring part and the vert