MANDREL FOR FIXATION OF THIN-WALLED WORKPIECE DURING PRECISION GRINDING Russian patent published in 2017 - IPC B23B31/40 B23Q3/14 

FIELD: metallurgy.

SUBSTANCE: mandrel comprises a working part made of intelligent material as a whole which has an axial bore, and which outer layer is made non-deformable. The fluidity radius of the inner deformable layer of the mandrel working part having a shape memory effect does not exceed the radius of the outer non-deformable layer and is determined from the ratio of , where r_f is the fluidity radius of the inner layer of the mandrel working part, r₁ is the axial bore radius, r₂ is the radius of the mandrel working part, p is the internal pressure on the walls of the axial bore used to launch the shape memory effect, σ_f is the fluidity point of the mandrel material.

EFFECT: enlarging technological capabilities of the mandrel and simplifying the design thereof.

1 dwg