FIELD: machine engineering, possibly bearing making industry branch, namely working parts of race type in turntable grinding machine tools with round magnetic table.
SUBSTANCE: in grooves of magnetic table of machine tool at least three bodies are mounted by central angles 360°/n where n - number of grooves of magnetic table. Said bodies have parting surfaces in the form of rectangular grooves inclined by angle 75° relative to surface of magnetic table. In rectangular grooves of bodies locking wedges with working and resting surfaces inclined one relative to other by angle equal to sliding friction angle of steel upon steel are arranged. Bodies are mounted in magnetic table in such a way that their upper portions protrude over plane of lower end of worked part by distance exceeding by 5 - 6 times maximum coordinate of worked part chamfer engaging with working surface of locking wedge.
EFFECT: elimination of physical efforts of operator, improved comfort of mounting part in magnetic table, enhanced accuracy of working due to prevention of part deformation.
5 cl, 7 dwg, 1 ex
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