普通车床经过较长时间使用后，常常发生床鞍下沉现象。
The bed saddle subsidence phenomenon in general lathe often takes place after a long time using.
最后，基于以上研究成果，对车床主轴和车床床鞍在振动中出现的现象做了分析和解释。
Finally, based on the above research achievements, taking lathe spindle and saddle as an example to illustrate the reasons of vibratory response.
采用增大纵向走刀小齿轮的变位系数、增加小齿轮齿数、恢复床鞍高度等方法可解决上述问题。
These problems can be solved by increasing the modification coefficient of small vertical cutting gear, increasing the number of gear teeth and restored the height of the bed saddle and so on.
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