我厂在设计专用鼠牙盘平面磨床时,采用了一种新型自动换向阀,用以控制砂轮架往复摇摆的换向运动。这种换向装置是参考国外期刊介绍进行设计和制造的。现简介如下: 一、自动换向原理图示为这种自动换向阀的原理图,图中所示为阀处于中间位置。阀的左端有两个节流口C,使P与阀的左腔相通。阀的右半 I plant in the design of special ratchet surface grinder, the use of a new type of automatic directional control valve to control the reciprocating movement of the wheel carrier reciprocating. This kind of reversing device is designed and manufactured according to the introduction of foreign periodicals. Now briefings are as follows: First, the principle of automatic reversing Schematic diagram of this automatic valve to the schematic shown in the valve is in the middle position. The left end of the valve has two restrictor C, so that P and the valve connected to the left chamber. Right half of the valve