降重论文语句：装置采用自动定心的三爪卡盘三爪卡盘三个卡爪要保证同时作夹紧运动这样就能达到自动定心的目的的所以他可以定位于夹紧同时进行。
The device utilizes an automatically centering three-jaw chuck, where the three jaws must simultaneously clamp in order to achieve automatic centering, allowing it to be positioned during the clamping process.
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