Contrivance for the machining of cylindrical surfaces on metal-cutting lathes

A contrivance for the machining of cylindrical surfaces on work supported for rotation on metal-cutting lathes comprising a housing;

• a tool head fixed inside said housing;
• at least one tool clamped in said tool head and having a cutting edge;
• a head with deforming rollers, said head being located in said housing behind said tool head;
• a system for feeding coolant-lubricant incorporating a source of coolant-lubricant, a chamber disposed in said housing between said tool head and said head with deforming rollers, said chamber being connected to said source of coolant-lubricant and to said head with deforming rollers, at least one nozzle fitted in said housing between said chamber and said tool head so that the jet issuing therefrom is aimed at the cutting edge of at least one said tool, the surface of said work defining one wall of said nozzle, and said nozzle confining the coolant-lubricant flow to direct and confine said flow to issue againt the cutting edge of said tool.