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近十几年来,随着高效切削技术的发展,机床效率有了成倍的提高。机床的主电机功率和主轴转速均相应加大,因此,机床卡盘的极限转速这个课题越来越引起人们的重视。决定卡盘转速的极限因素很多,例如:卡盘的结构刚性、静态卡紧力的大小、制造精度等,其中结构刚度和动态夹紧力的损失是主要因素。对平面螺纹型自定心卡盘来说,结构刚度往往是确定最高转速的决定因素。因为,卡爪牙弧与平面螺纹是“线”接触,输入夹紧力矩受到了限制,直接影响了夹紧力的增
In recent years, with the development of high-efficiency cutting technology, machine tool efficiency has doubled. The main motor power and spindle speed of the machine are correspondingly increased, therefore, the subject of the limit speed of the machine tool chuck more and more people’s attention. For example, the structural rigidity of the chuck, the size of the static clamping force, the manufacturing precision, etc., among which the structural rigidity and the loss of the dynamic clamping force are the main factors. For planar threaded self-centering chucks, structural stiffness is often the determining factor in determining the maximum speed. Because, claw tooth arc and plane thread is “line ” contact, the input clamping torque has been limited, a direct impact on the clamping force by the increase