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数控车床外圆加工的误差分析

作者:数控之家 来源:迅鹏官网 点击:

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  一、外圆数控车床的加工原理数控车床外圆加工的误差分析图

  1.1 微进给刀架结构

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  1.2 车床工作原理分析

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  二、外圆数控车床活塞实验误差分析

  2.1 程序参数调节控制不合理引发的问题

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  2.2 温度导致的铝板偏差

  (1)铝板热变形。通过对机床刀架系统运行状况的分析,在刀架安装铝板的过程中,其核心目的是降低铝板运行中的惯性应力。在机床刚开始较高的时候,机床的整体温度会从室内25℃的温度提升到35℃的状态。在具体实施操作的时候,受铝板热膨胀系数的影响,铝板热变形是影响活塞加工误差的重要因素。

  (2)铝板热变形的影响。根据系统运行状况,在设备操作中,由于电涡流传感器对铝的感应能力较低,在实际操作中,容易引起铁片强度较高的问题,检测温度的变化范围在0~10℃,在将关联系数代入指定的参数后,得到电涡流初始状态下的检测数值,因此,在具体的设备操作中,设备人员应该根据电涡流检测系统的运行状态,对铁片的位置进行控制及调整,以及时消除刀架在横轴热变中的误差问题。需要注意的是,对于相关设备维护人员,在具体的工程操作中,需要根据铁皮检测面以及传感器断面的平行度等,确定各个系统的协调参数,以避免铝板热变对系统运行造成的影响。

  2.3 数控车刀安装高度的影响数控车床外圆加工的误差分析图

  (1)数控车刀安装位置的影响。通过对数控车刀安装方案的分析,若出现高度不同的问题,会降低系统的切削性能,也就是说,在具体的刀具安装以及操作的过程中,当遇到刀尖高于中心面的问题,会在刀具工作面上形成夹角,导致刀具工作之前的夹角偏差比较大。在具体操作时可以发现,工作前角在不断变大的时候,就会减少切削层的变形,最终在使用操作的时候,会减少整个机床运行管理的消耗,和减少这些消耗伴随出现的切削温度的降低。在实施操作的时候为了能够解决以上问题,需要操作人员采取恰当的方式提升加工天博体育加工质量。在具体操作的时候,若刀具安装相对较高,会影响后续工件的生产,而且也无法提高零件的生产效率,降低各个设备流程的操作价值,严重的会出现刀具崩裂的问题。因此,在具体的设备粗加工中,应保证刀头切割的轻度,通过刀具安装高于中心位置的问题分析,增强各个工序施工的稳定性,由此在确保刀具强度的同时,还能为切削操作的开展提供重要支持。而且,在精加工操作的过程中,通常会选择后角施工方法,将刀具安装在比较高的位置,避免刀面及工件不对称问题的出现,以增强工件表面的施工质量。

  (2)刀具安装高度对刀具加工精准度的影响

  第一,尺寸误差的分析。

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  第二,形状误差的分析

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  第三,切削直径向力带来的加工误差。

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  JIEYU

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