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Shandong CNC lathe manufacturers on the lathe accuracy requirements of the reasons
    1, the ellipticity of the spindle journal is directly reflected to the workpiece up, if it is sliding bearings, then when the load size and direction of the same, the main journal under load in the bearing surface pressure on a certain position (due to the spindle and Bearing a gap between). When the spindle turns 90 °, the center position of the spindle changes, so that the spindle has two centers in the course of one rotationPosition, turning the knife back to change the amount of the workpiece, leaving the workpiece ellipticity. The ellipticity of the bearing bore has no effect on the workpiece.
    2, blank margin is not uniform, coupled with the gap between the spindle and the bearing, the cutting process in the back to eat a knife to change.
    3, before and after the central hole does not match (the two central hole and the workpiece center at an angle), the center hole and the top contact only to one side, wear and tear caused by uneven axial movement from the oval
    Resulting in the bus is not straight (nurture, convex, saddle) and taper reasons
    1, Shandong CNC lathe guide rail and the spindle center line of mutual position is not correct, especially in the level. Such as rail bending, the workpiece convex or concave, the guide rail and the spindle is not parallel to the center line of a cone-shaped.
    2, before and after the top center line and bed surface guide is not parallel, resulting in taper.
    3, due to the workpiece temperature increases, the shaft will produce bending. For example, when a long shaft is machined by a heavy-duty lathe, the workpiece is elongated when the temperature rises to a certain value, but the workpiece is not bent in the longitudinal direction because the distance between the two tips is not changed. Therefore, in the car long axis, try to reduce the temperature, but also must always look back after the top.
    4, the workpiece internal stress. Internal stress often exists in the workpiece, in the cutting process, due to plastic deformation of the surface layer, but also produce internal stress, the internal stress in the workpiece was balanced inside the workpiece to maintain a certain shape.But when the workpiece from the fixture or lathe unloading The next, it is necessary to produce deformation.
    The above content describes the accuracy of the lathe can not meet the requirements of the reasons, the main products of Tai'an sea of ​​machinery: horizontal lathe bed CNC lathes, vertical CNC lathes, CNC turning centers, CNC lathes, CNC milling machine, CNC machining center The number of seas, choose Su always feel right, order the phone 13953800780.