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          河北华利机械配件有限公司

          C6140 车床走刀箱变速手轮结构改进

          2013/5/10 10:01:05
          1.问题分析

                  机电设备制造厂机加车间C6140 车床进给量调整手轮结构如图1 所示,8 级变速,使用时频繁拉进、拉出、旋转,容易出现磨损。由于手轮(HT15 -32 铸铁)与手轮轴(45# 钢)材料硬度不同,手轮先磨损,当手轮磨损到一定程度时会造成:①调节进给量时不易定位或定位不准确,不利于操作,影响生产进度;②磨损量大时,手轮向下倾斜,有可能脱落使变速机构失灵,甚至打坏齿轮。

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