| 摘要 |
The annular workpiece (P) to be machined is positioned by one of its bases a nd with axial alignment onto a cylindrical base structure (1) onto which the workpiece remains secured due to the presence of a suitable adhesive (2) whi ch for example has been previously distributed onto the said base structure. After the setting of the adhesive, the workpiece to be machined is loaded on to the machine tool, so as to be clamped by the chuck of this latter through th e base structure (1) which carries it, and no more directly as in the known ar t. The clamping forces of the chuck are thus discharged onto the base structure (1) and they do not deform at all the workpiece (P) which can be machined wi th high precision and quickly, both on its inner and outer surfaces and, if required, also on its free base. Upon completion of the machining operation, the workpiece is unloaded from the machine tool and is separated by the base structure by means of a simple and quick mechanical or chemical-physical operation, which neutralizes the action of the adhesive employed.
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