Vertical machining center affects precision to maintain main factor of the gender
- Time:
- Click:67
- source:JUSTYN CNC Machining
01mm is taller even. Main shaft serves as and workpiece is direct the machine tool component of action, to the maintenance of the influence that workpiece machines and machine tool precision the gender is affected crucial. When be machined actually, all sorts of error elements exist to affect treatment precision in main shaft component. Particular expressional form is: When error of angle of axial sum of errors appears at the same time, will tell to main shaft appeared end panel is jumpy; When error of angle of radial sum of errors appears at the same time, main shaft beats with respect to meeting occurrence radial. The occurrence of these two kinds of errors is right workpiece * eventually the influence that machines precision is very big. The element of a few respects such as the effect that causes the reason of these two kinds of errors to basically adoption bearing error is caused, effect that the spare parts error that cooperates with bearing causes, influence of main shaft rotate speed, specific we look: One, we know the influencing factor of main shaft rotate speed, the main shaft rotate speed of vertical machining center is general taller, but increase of rotate speed ceaselessly as main shaft, when achieving quickness especially, the instability of all sorts of random vibration and circumgyrate axes also as increase, when the fatigue strength endurance that exceeds main shaft * brings about generation of error of main shaft circumgyrate to cannot increase reversibly eventually, * of influence machine tool eventually machine precision. 2, uses bearing error influencing factor is used for long in the machine tool hind, bearing can appear because of wearing away naturally clearance. When bearing gap is too big, clearance place can produce deeper oily film, when vertical machining center is machined, cutting force and rotate speed can produce change, but the carrying capacity of oily film is poor, change of oily wedge ply is bigger, brought result is quantity of drift of main shaft axes increases, destroy a machine tool to machine what precision maintains a gender to reduce thereby. 3, the influencing factor of spare parts error that cooperates with bearing is used for long in vertical machining center hind, besides can appear afore-mentioned narrates bearing clearance increase. Shoulder of aperture of bearing of the axial diameter that cooperates with bearing at the same time, casing, axis, bearing carries the part such as lid, nut, because the machine tool gets power,also can arise a few be out of shape. * brings about drift of the radial of axes of main shaft circumgyrate, axial eventually, affect the circumgyrate precision of main shaft thereby, cause a machine tool to machine precision to maintain a gender to reduce. CNC Milling CNC Machining