Internal thread grinding machine S7620A

workpieceprecisionhydraulic

The machine is mainly used for grinding cylindrical, conical，whitworth and circular internal threads。 【NC system configuration】 【Working accuracy】 1、The accuracy of cylindrical Whitworth internal thread ground Pitch error(within6mm) adjacent pitch error 0.003mm at a length of25mm 0.005mm at a length of100mm 0.006mm 2、Roughness Ra0.4μm 3、Accuracy of cylindrical thread ground Limit lead deviation 0.005mm Accumulative error at a length of25mm 0.008mm Accumulative error at a length of50mm 0.009mm 【Technical characteristics】 1、Driven by hydraulic，wheel dressing performs dressing automatically.。The operator can shift between one-way or two-way grinding cycles。 2、The precision hydrostatic bearings are used on the wheel spindle 3、A full-closed housing and an oil-mist extractor are provided with the machine 4、The machine is provided with two sets of workpiece speed for users to shift between low range and high range. The wheel spindle speed is stepless 5、The change gears can adjust the pitch to be ground 6、The whitworth thread or circular thread can be dressed with the help of changing different types of dressers