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Y631K型花键轴铣床在生产中常发生走刀及崩刀故障,影响产品质量和生产效率。针对这种情况,对进给箱的传动结构和电气控制进行改装,经过较长时间的使用,效果良好。 1.双向离合器工作失灵的分析该离合器的工作原理如图1所示,它是用滚柱做工作楔紧块。根据力的平衡自锁条件,楔紧角要小于或等于两摩擦角之和;在恒定而不间继的外力作用下,使滚柱能够楔紧星体,保证双向离合器正常工作。在使用中,每走刀往返一次,双向超越离合器的滚柱就各楔紧松开一次。在频繁的走刀运动中,星圈与滚柱之间的相对位置不间继的变化,它们的摩损是均匀的;而星体同滚柱之间的接触部位基本不变,从而造成该部位由于频繁挤压而摩损产生凹坑,导致滚柱的楔紧角增大。当凹坑深到一定的程度,自锁条件遭到破坏,双向离合器便不能正常工作,产生打滑,发生走刀故障。 2.改装的要点由上述分析得知,工作台运动不正常与双向离
Y631K-type spline shaft milling machine often occurs in the production of walking and chipping knife failure, affecting product quality and production efficiency. In view of this situation, the feed box drive structure and electrical control modification, after a longer period of use, the effect is good. 1. Two-way clutch failure analysis The working principle of the clutch shown in Figure 1, it is done with a roller wedge tight work block. According to the equilibrium condition of self-locking force, the wedge angle should be less than or equal to the sum of the two friction angles; under the constant and unsurpassed external force, the rollers can wedge the stars and ensure the normal operation of the two-way clutch. In use, each pass back and forth, the two-way clutch clutch on each wedge tight release. In the frequent walking movement, the relative position between the star and the roller changes continuously, their wear is uniform; and the contact between the stars and the roller is basically unchanged, resulting in the site Due to frequent squeeze and wear pits, resulting in increased wedge angle roller. When the pit is deep to a certain extent, the self-locking condition is destroyed, the two-way clutch can not work normally, resulting in skidding and the occurrence of a knife-cutting fault. 2. Modified points learned from the above analysis, table motion is not normal and two-way away