HOLDING DEVICE FOR FASTENING THE POINT CUTTING TOOL Russian patent published in 1995 - IPC

FIELD: metal working. SUBSTANCE: when coupling unit 3 is rotated, ring 4 and tongs 2 into which the tool is set up, shift progressively relative to housing 1 of the holding device exercising the preliminary clamp of the tool. The final clutch is fulfilled when nut 3 does not move turning pressing ring 4 with the help of member 12 by part of the turn. As ring 4 and nut 3 connected between themselves by rolling solids of revolution 5 do not shift relative to the holding device in the axial direction, tongs 2 through rolling solids of revolution 5 placed in groove 10 receives an additional displacement deep into the holding device into the cone nest at a distance in the range of the value "K", at the expense of which the force of the tool clamp and, consequently, the reliability of its securing in the holding device increases. EFFECT: enhanced accuracy. 1 dwg