One, treatment asks to if graph 3-12 place shows a part,be machined. Hardware data is 45 steel, among themΦ70 outside the circle is not machined, use at spare parts clip to hold. Ask to finish: (1) vehicle of thick, fine each surface; (2) grooving; (3) car whorl. Machine equipment: Lathe of SSCK20A numerical control 2, preparation completes relevant preparation work before working treatment, the option that includes craft analysis and craft course design, cutting tool and fixture, to program. 3, operation measure and content 1, switch on the mobile phone, the hand moves each reference axis a machine tool origin 2, cutting tool ordinal mount tool carrier asks to choose the circle outside lathe tool of 45° end panel, 90° according to treatment knife of lathe tool, grooving and 60° whorl lathe tool each one, its number is 01, 02, 03, 04 respectively, cutting tool material uses hard metal. 3, place workpiece with outfit of hydraulic pressure chuck 4, with try cut a way to the knife, set parameter of good cutting tool 5, the hand uses an input machine program 6, debug machine program hand to move a cutting tool to removed from work place, choose automatic mode, v machine program, press the mechanical lock in auxiliary key is decided, program sky runs two key, press again program of rehearse of the key that start, movement of examination cutting tool and treatment way are right. 7, affirm the program is not had by accident hind, can undertake be machininged automatically 8, take next work, undertake vernier calipers detects detecting choosing dimension, choice whorl micrometer detects whorl. 9, clear treatment spot 10, close machine CNC Milling