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1、滾動軸承磨損或調整不當，造成運動阻力過大。該故障現象也通常表現為尺寸在幾絲范圍內無規則變動。檢查時可通過DGN800-804的位置偏差量進行，方法同上。此類故障只需將磨損軸承更換并認真調整，故障即可排除
2、伺服電機軸與絲杠之間的連接松動，致使絲杠與電機不同步，出現尺寸誤差。檢測時只需在伺服電機與絲杠的聯軸節上作好記號，用較快倍率來回移動工作臺(或刀架)，由于工作臺的慣性作用，將使聯軸節的兩端出現明顯相對移動。此類故障通常表現為加工尺寸只向一個方向變動，只需將聯軸節螺釘均勻緊固即可排除。
3、 數控機床工作臺(或刀架)移動阻力過大，一般為鑲條調整過緊、機床導軌表面潤滑不良所致。該故障現象一般表現為零件尺寸在幾絲范圍內無規則變動。檢查時可通過觀察DGN800-804的位置偏差量大小和變化來進行，通常為正反方向靜止時相差較大。此類故障只需將鑲條重新調整并改善導軌潤滑即可。
4、滾(gun)珠絲(si)杠與螺母之間潤(run)(run)滑(hua)不良(liang)，使工作臺(或(huo)刀架)運動阻力增加(jia)，無(wu)法完全準(zhun)確執行(xing)移(yi)動指令。此類故(gu)障(zhang)通常表(biao)現為零件尺寸在幾(ji)絲(si)范圍內(nei)無(wu)規則變(bian)動，只(zhi)需將潤(run)(run)滑(hua)改(gai)善即(ji)可排除故(gu)障(zhang)。
1, rolling bearing wear or improper adjustment, resulting in excessive movement resistance. The failure phenomenon is usually shown as irregular size in a few wire ranges. Inspection can be carried out through the position deviation of DGN800-804, the same as above. This kind of fault only needs to replace the worn bearing and adjust it seriously.
2. The looseness of the connection between the servo motor shaft and the lead screw causes the screw and motor to be out of sync, and the size error appears. It is only necessary to mark the coupling between the servo motor and the screw, and move the worktable (or the knife frame) with the fast multiplying. Because of the inertia of the worktable, the two ends of the coupling will appear to be relatively moving. This kind of fault usually shows that the machining dimension changes only in one direction, and only if the coupling screws are uniformly fastened can it be eliminated.
3, CNC machine tool worktable (or tool holder) mobile resistance is too large, generally for the strip adjustment too tight, machine tool guide surface lubrication caused by bad. The failure phenomenon is generally shown as the irregular size of parts in a few wire ranges. Inspection can be carried out by observing the size and variation of the position deviation of DGN800-804, usually in a positive or negative direction. This kind of fault only needs to re adjust the strip and improve the lubrication of the guide rail.
4, lubrication between ball screw and nut is bad, which makes the resistance of worktable (or turret) increase, and can not execute the mobile instructions exactly. This kind of fault usually shows that the part size is irregular in several wire ranges. Only by improving the lubrication can the trouble be eliminated.