C5112A型立式车床,其变速箱的自动变速系统是机电液动作互相配合的。电气系统一方面控制电磁阀动作,一方面控制主电机产生脉动伺服,液压系统操纵滑移齿轮进行换档。 我厂有一台 C 5112 A型立车曾出现过以下变速故障。虽然主电机在转,但齿轮却挂不上,并伴有异常响声。经检查,主 C5112A vertical lathe, the gearbox automatic transmission system is electro-hydraulic action with each other. On the one hand, the electrical system controls the operation of the electromagnetic valve. On the one hand, it controls the main motor to generate pulsating servo and the hydraulic system controls the sliding gear to shift. I plant a C 5112 A vertical car has appeared below the speed change failure. Although the main motor is turning, but the gear is not hanging, accompanied by abnormal noise. After checking, Lord