Cause treatment precision the reason of unusual breakdown concealments the gender is strong, diagnostic difficulty is greater, baconian give 5 main reasons: Unit of machine tool feed is altered or change; Machine tool of each axes slanted at 0 o'clock buy is unusual; The backlash of axial is unusual; Position of electric accident travel is unusual, namely electric reach control the part is unusual; Mechanical failure, be like guide screw, bearing, axial couplet implement wait for a component. The work out of foreword of other adscititious project, the choice of cutting tool and person are an element, bring about treatment possibly also precision is unusual. The of case study of machine tool loss of accuracy first exterior hind machine tool of internal numerical control is market mechanism, hydraulic pressure, electric the machine tool that is an organic whole, the happening of its breakdown also meets friend by this 3 person comprehensive report comes out. Maintenance technician should be undertaken discharging checking by the one by one inside extroversion first, avoid optional ground open the envelop as far as possible, disassemble, can enlarge breakdown otherwise, make the machine tool loses precision, reduce performance. First machinery hind is electric generally speaking, mechanical failure detects more easily, and the diagnosis of breakdown of numerical control system criterion somes difficulty is greater. Before corrective maintenance, notice to remove mechanical trouble above all, often can achieve the result of get twice the result with half the effort. Below the dormant position that preexistence machine tool uses to cut off the power after Xian Jing, pass understanding, observation, test, analysis, think truly after nondestructive breakdown, just can give a machine tool electrify; Below operating conditions, have dynamic observation, examine and check, search breakdown. And to ruinous breakdown, after must eliminating risk first, square but electrify. First simple hind complex should appear a variety of breakdown interweave each other mask, when doing not know how to start temporarily, answer to solve easy problem first, the problem with bigger difficulty is solved after. After often asking the problem is solved simply, the question with big difficulty becomes possibly also easy. CNC MillingCNC Machining