产品简介
A20B-2901-0986
A20B-2901-0986
产品价格:¥220
上架日期:2019-10-08 12:09:06
产地:A20B-2901-0986
发货地:FANUC
供应数量:不限
最少起订:1个
浏览量:193
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详细说明

    A20B-2901-0986现货 in stock! 欢迎来电咨询~!!

    A20B-2901-0986,

    A20B-2901-0986

    A20B-2901-0986

    机床几何误差包括:主轴误差,导轨误差以及传动误差。
    (1)主轴回转误差
    主轴回转误差包括:径向跳动,轴向传动,及角度摆动。主轴支承轴颈的误差、滚动轴承制造及磨损,会造成回转时出现径向跳动及轴向跳动,从而产生主轴误差,造成加工工件的形状误差、表面波度及粗糙度值较大。
    消减主轴误差的措施:
    采用高精度的主轴部件;更换轴承、调整轴承间隙。
    (2)导轨误差
    导轨误差主要来自于导轨本身在制造时产生的误差、导轨安装不正确以及导轨在运动较长时间后产生的磨损,会造成加工脚面的形状和位置误差。
    消减导轨误差的措施:
    选用高质量的导轨;正确的安装方式;对导轨定期检查及测量。
    (3)传动误差
    传送链误差是由于传动链中传动元件的制造误差、装配误差以及使用过程中磨损引起的。不同位置的传动元件,其误差影响也不同,通常末端元件的误差对传动链的误差影响最大。
    消减传动误差的措施:
    采用高精度传动结构;缩短传动链长度;减小装配间隙。
    2.>>>刀具几何误差<<<
    刀具的制造误差、装夹误差及磨损会造成加工误差。定尺寸刀具的尺寸误差会直接反应在工件的加工尺寸上;成形刀具的误差会导致加工表面的形状误差;
    消减刀具的几何误差措施:
    除了选用合适的刀具之外,加工时还应及时磨刃、更换刀具。
    3.>>>夹具几何误差<<<
    夹具的制造误差、装夹误差及磨损会造成加工误差。为保证工件的加工精度,一般将夹具的制造公差定位相应尺寸公差的1/3~1/5。
    消减夹具的几何误差措施:
    应定期检查夹具的精度与磨损情况,及时修理及更换磨损的夹具。
    4.>>>工艺系统变形误差<<<
    在切削力、传动力、重力和惯性力等外力作用下,工艺系统会产生变形,破坏工具与工件间的正确位置,造成加工误差。
    减小工件受力变形误差的措施:
    选择刚性较好的机床;工件分粗、精阶段进行加工;减小刀具、工件的悬伸长度或进行有效支承;改变刀具角度及加工方法;
    在切削加工时,切削热及机床传动部分发生的热量,使工艺系统发生不均匀的温升而变形,产生加工误差。

    上亿库存,国内外近千个仓库,公司部分产品型号如下,欢迎联系哦~!

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