METHOD OF REINSTALLING A THIN-WALLED WORKPIECE INTO A POWERED CHUCK Russian patent published in 2020 - IPC B23B31/20 B23B31/26 

FIELD: technological processes.

SUBSTANCE: method includes installation of a workpiece on a basing element, its fixation in the specified element, installation of a collet chuck with clamping elements in the form of petals of collet and with a pressure cone opposite to a workpiece, supply of a chuck to a basing element with approach of its collet in an opening of a workpiece, as well as movement of tabs in radial direction to approach workpiece hole by movement of pressure cone along axis of collet. At the moment of contact of the hole with one of lobes, radial displacements to the sacred lobes are imparted to the pressure cone prior to contact of the blank with all lobes. Then, the billet is fixed simultaneously with all lobes, detached in the basing element and the chuck with the billet is moved to the initial position.

EFFECT: higher accuracy of reinstallation of thin-wall workpiece due to reduction of its deformation during fixation, which is caused by error of hole shape, which is fixed, and deviation from coaxiality of this hole relative to collet chuck axis.

1 cl, 2 dwg