Numerical control lathe oscillation problem

numerical control lathe in machining process, has the fibrillation lines formed workpiece appearance, rework rate, high rejection rate, accompanied by a knife phenomenon. Oscillation is not only seriously deteriorated processing appearance quality, and it can shorten the lathe and the cutting tool life. So we it is necessary to take some measures to reduce or eliminate oscillation lathe attack. The following is said to cause oscillation problem of numerical control lathe. Products in the process of machining, guangdong produce CNC lathe manufacturer of CNC lathe onset of oscillation is very messy, the causes of oscillation are various, through analysis, first has the following several aspects: ( 1) The shape of the workpiece and disorderly and the clamping part choose inappropriate: workpiece contour structure rules, there is no good datum, not convenient clamping, the workpiece clamp is not tight, loose during the course of processing, simple corresponding oscillation with the change of the cutting force and attack. ( 2) Uneven workpiece internal organization: casting blank parts local defects such as porosity, sand holes, loose, coarse grains or containing impurities. Casting soft hard uneven cutting, tool uneven force, cutting force is not stable, easy to stir the CNC lathe attacks, sometimes forming a knife, the machining quality of workpiece is difficult to control. ( 3) Cutting tool selection is not reasonable: blade data is not appropriate, poor rigidity, is one of primary cause of oscillation. If choose the wrong tool, sometimes can make the tool wear increase or cause chip tumor, hair artifacts appearance or play knife cause oscillation and affect the quality of the product. When turning the low frequency oscillation, usually in the oscillation system of workpiece and tool holder system ( But the vast majority of cases the workpiece system oscillation is larger, plays a dominant position) , from them from time to time, and sometimes approach, attacks in the opposite direction from the intrusive flat action and reaction.

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