The invention discloses a vacuum adsorption type three-coordinate flexible attitude-adjusting unit which comprises a base seat, an X direction ballscrew, an X direction
reducer, an X direction
servo motor, longitudinal and cross plankers, an upper planker, a supporting cylinder body, a telescopic column, a clamping sleeve, a vaccum adsorption ball-end, a Z direction ballscrew, a Z direction
grating ruler, a worm gear
reducer, a Y direction guide rail slide, a Y direction linear guide, an X direction organ cover, an X direction linear guide, an X direction guide rail slide, a Y direction ballscrew, a Y direction organ cover, a Z direction
servo motor, a Y direction
reducer and a Y direction
servo motor; the closed-
loop control is carried out through the driving of the servo motor and the ballscrew and the feedback of the
grating ruler, the accurate positioning in the X, Y and Z directions is realized, and the organ cover is arranged in the corresponding direction for protecting. The component part with complex profile can be supported and fixed through the vacuum adsorption, the supporting is steady and reliable, and the cooperative motion can be realized in the three directions. By adopting the vacuum adsorption type three-coordinate flexible attitude-adjusting unit as the core unit, the attitude-adjusting systems for different purposes can be formed through certain configuration.