为了将电动卡盘使用范围扩大到用于棒料加工,我们对不通孔电动卡盘进行了改进,试制成功了通孔电动卡盘(见图1)。这种卡盘主要有两个特点: 1.扩大了卡盘孔前部空间到深度50毫米(原不通孔电动卡盘为30毫米,手动卡盘为70毫米),因而对一般的大头零件如模锻螺栓,卡爪可让过其头部而直接卡到工件外圆上,使装卡切削方便可靠。 2.有主轴孔,可以通过φ32毫米以下的棒料。一、电动卡盘的结构如图2所示,6是一个偏心套,在φ50毫米的圆周上装有支承轴承9,另外的两个圆φ45毫米及φ55毫米均对φ50毫米有1.26毫米的偏心量,其中心位置互为180°,与φ50毫米中心同处一直线上。两个偏心圆分别装 In order to extend the use of the electric chuck for bar processing, we improved the non-through hole electric chuck and successfully manufactured a through-hole electric chuck (see FIG. 1). This chuck has two main features: 1. Expand the front of the chuck hole space to a depth of 50 mm (the original non-through hole electric chuck is 30 mm, manual chuck is 70 mm), so the general bulk of the parts such as Forged bolts, jaws allow the head and the card directly to the workpiece on the outer circle, so easy and reliable card loading and cutting. 2. With spindle hole, can pass φ32 mm below the bar. First, the structure of the electric chuck shown in Figure 2, 6 is an eccentric sleeve, bearing on the circumference of φ50 mm bearings 9, the other two φ45 mm and φ55 mm φ50 mm have a 1.26 mm eccentricity , Its center position 180 ° each other, and φ 50 mm center line with a straight line. Two eccentric circle were installed