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我厂生产的产品中,有多种零件是长方形六面体,它们大多由模锻成形,再铣削或刨削加工成零件。这些毛坯件的加工余量大,装夹次数多,用普通的手动虎钳夹紧,其生产效率较低,而操作工人的劳动强度则较高。为确保产品质量,成倍地提高装夹生产率,并大大地减轻工人的劳动强度,我们根据工件的不同规格,设计制造了一台小型液压虎钳。其能夹持工件之最大尺寸为长×宽×高=200×100×100mm。液压虎钳的结构见附图。它实际上是一台包括油泵、安全阀、压力表等液压元件在内的(图中未画出)独立的动力装置。我们采用一台高压柱塞油泵,其压力为13～18MPa。油缸体6的内径为50mm、活塞7
I plant products, there are a variety of parts are rectangular hexahedron, most of them by forging, and then milling or planing processed into parts. The rough machining allowance, the number of clamping times, with ordinary manual vise clamping, the lower the production efficiency, while the labor intensity of the operator is higher. In order to ensure the product quality, exponentially increase the clamping productivity, and greatly reduce the labor intensity of workers, we design and manufacture a small hydraulic vise according to the different specifications of the workpiece. It can hold the maximum size of the workpiece is L × W × H = 200 × 100 × 100mm. The structure of hydraulic vise is shown in the attached drawings. It is actually an independent power unit that includes hydraulic components such as oil pumps, safety valves, pressure gauges, etc. (not shown). We use a high pressure piston pump, the pressure is 13 ~ 18MPa. The cylinder block 6 has an inner diameter of 50 mm and a piston 7