切向键联接：它由两个普通楔键组成。其上下两面（窄面）为工作面，其中之一面在通过轴心线的平面内。工作面上的压力沿轴的切线方向作用，能传递很大的转矩。
Tangent key join: it c***ists of two common wedges. Both sides of the upper and lower sides (narrow surface) are working faces, one of which is in the plane of the axis of the axis. The pressure on the working face acts along the direction of the shaft and tran***it a large torque.
凡是在轴毂联接中不用键、花键或销时的联接，统称为无键联接。无键联接中我们介绍两个常用的型面联接和过盈配合联接。
The connection of no key, spline or pin in the hub connection is called the keyless connection. In keyless joins, we two commonly used type face joins and interference fit connecti***.
装夹过程及工作原理。钳台底座在设备工作台上固定好后，先调整可调钳口座在钳体底座上的位置，确保装夹行程内能有效对工件进行装夹；再将待加工产品置于柔性虎钳的两个钳口之间。
Clamping process and working principle. When the clamping platform is fixed on the equipment worktable, the of the adjustable jaw seat on the base of the clamp body is adjusted first, so as to ensure that the workpiece can be clamped effectively in the clamping stroke, and then the processed product is placed between the two jaw openings of the flexible vice.