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在1961年前我厂生产的M131W外圆磨床,其液压系统中采用的操纵扳,大部分是两块合并的板式结构。几年来,这种操纵板在使用和维修中,出现很多疵病,有的严重影响产品质量和安全。为此,将几年来在维修中摸索到的点滴经验,总结介绍于下。一、故障的来源M131W外圆磨床液压操纵系统的油路,是通过操纵板中间的油槽来连接的。由于油槽是铸造而成,故其宽度和距离往往与图纸相差很多,且系统之间的作用槽较长,封油面较短。当两块板合并时,往往油孔不在槽的对称位置,加以操纵板面积大,不平度难于达
In 1961 I plant the M131W cylindrical grinding machine, the hydraulic system used in the control panel, most of the two combined plate structure. In recent years, this control panel in use and maintenance, there are many flaws, and some serious impact on product quality and safety. To this end, the maintenance of the past few years to explore the bit by bit experience, summarized below. First, the source of failure M131W cylindrical grinding machine hydraulic control system of the oil is through the control panel in the middle of the tank to connect. Because the oil tank is made of castings, its width and distance are often a lot different from the drawings, and the role of the slot between the system longer, sealing surface is shorter. When the two plates merge, often the oil hole is not in the slot symmetrical position, to control the plate area, unevenness difficult to reach