一、三爪自定心卡盘 全苏采煤机械制造科学研究工艺设计院研制了三爪自定心卡盘(见图),滑块穿过机床主轴通过其斜面移动顶杆,作用于三个卡爪上(发明证书264881)。 为了提高卡盘的刚度,其中每一个卡爪以球面形式装在三臂体上,第一个臂承受径向移动顶杆的作用,第二个臂是一个夹具,而第三个臂位于第一和第二个臂之间,靠弹簧顶在三臂体上。 First, the three-jaw self-centering chuck All coal mining machinery manufacturing science and technology research and design institute developed a three-jaw self-centering chuck (see photo), the slider through the machine spindle through the bevel mobile jack, acting on the three A claw (invention certificate 264881). In order to increase the rigidity of the chuck, each of the jaws is mounted on the three-arm body in the form of a sphere, the first arm is subjected to the action of a radially moving plunger, the second arm is a jig and the third arm is located on the Between the first arm and the second arm, the top of the arm rests against the spring.