在孔的珩磨装备中,为传递珩磨头转矩,通常采用万向接头,用以补偿工件孔与主轴的不同轴度,保证珩磨砂条随零件内孔表面自动调节。通常采用的球接头或柱销接头,结构复杂,径向尺寸大。珩磨直径较小的孔,不能采用。为此,前苏联某学院研制了一种带弹性接头,简化了结构,减小了径向尺寸。图1所示为带弹性接头的珩磨头。固接有金刚砂条的珩磨座2装入杆体1的槽中,座的斜面压在斜胀杆4的双楔面上,并用橡胶圈3箍住,防止它脱 Honing equipment in the hole, in order to pass the honing torque, usually universal joints, to compensate for the workpiece bore and spindle axis of non-uniformity, to ensure that honing sand with the hole surface automatically adjust parts. Ball joint or pin joint commonly used, the structure is complex, large radial size. Honing smaller diameter holes, can not be used. To this end, a college in the former Soviet Union has developed a flexible joint, which simplifies the structure and reduces the radial size. Figure 1 shows a honing head with an elastic joint. The honing seat 2 with the emery rod fixed thereto is inserted into the groove of the rod body 1. The inclined surface of the seat presses on the double wedge surface of the swelled rod 4 and is hoisted by a rubber ring 3 to prevent it from falling off