但是我读了许多书，看到过4张图片三爪卡盘。
I have however read a lot of books and have seen pictures of 4-jaw chucks.
在车床上采用三爪卡盘夹持薄壁零件往往不能满足精度要求，需要使用六爪卡盘。
The use of three-jaw chuck clamping thin-walled components often cannot meet the accuracy requirements in the lathe, need to use the six-jaw chuck.
分动卡盘有四个爪，而万能卡盘只有三个。
The independent chuck has four jaws, while the universal chuck has only three.
万能卡盘只有三个爪。
本产品的卡爪结构参数与K11系列三爪自定心卡盘基本相同。
The structure parameters of these chucks are much the same as those of K11 3-jaw self-centring chucks.
文章介绍了三爪动力卡盘的工作原理及其设计计算。
This paper introduces the working principle of 3-claw power chuck , design and calculation.
文章介绍了三爪动力卡盘的工作原理及其设计计算。
This paper introduces the working principle of 3-claw power chuck , design and calculation.
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