对于一台机器而言其运动部件结构的设计是至关重要的,运动机构中有害内力的存在对部件的损坏有时比外在的负载更具有破坏性。对此,应改善运动构件之间的尺寸配比,确保极限位置时最小传动角在适合的范围内;改进运动副,传力较小时可由低副改进为高副,以减小有害的摩擦力;当运动的部件自重较大时,要考虑自重对接触面附加力的情况。 The design of the structure of the moving parts is crucial for a machine. Damage to the parts by the presence of harmful internal forces in the moving mechanism is sometimes more devastating than the external load. In this regard, should improve the size ratio between the movement of components to ensure that the minimum position when the minimum transmission angle in the appropriate range; improve the movement vice, force transmission from small to vice may be improved to vice vice to reduce the harmful friction ; When the weight of the movement of the larger components, to consider the self-weight of the contact surface additional force situation.