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针对核主泵用流体静压密封环圆锥面高精度磨削难题,建立了由杯形砂轮端面切入式磨削的数学模型,提出将磨削面形误差分解为倾角误差和锥度误差并以此求解俯仰角和侧偏角取值范围的实现策略.以1个氦光带作为面形误差的评价指标时,发现俯仰角和侧偏角可在较大范围内取值,先粗略设定俯仰角和侧偏角中的任意一个,再精确调整另一倾角就能实现密封环圆锥面的高精度磨削,并且侧偏角比俯仰角对面形误差的影响更为敏感,先调整侧偏角再调整俯仰角有利于降低调整难度和提高调整精度.采用该磨削实现策略,选择两组不同的俯仰角和侧偏角加工密封环圆锥面,测量结果表明面形误差和表面粗糙度均在设计要求范围内.
Aiming at the problem of high precision grinding of conical surface of hydrostatic seal ring of nuclear main pump, a mathematic model of chamfer grinding of cup grinding wheel face is established, and the error of grinding profile is decomposed into inclination error and taper error To solve the pitch and roll angle range of the realization of the strategy.With a helium band as the evaluation of surface shape error, we found that the pitch angle and roll angle in a wide range of values, the first rough set pitch Angle and slip angle in any one, and then accurately adjust the other angle can be achieved on the seal ring conical surface of high-precision grinding, and the tilt angle than the pitch angle on the impact of shape error is more sensitive to adjust the slip angle Adjusting the pitch angle will help to reduce the difficulty of adjustment and improve the adjustment accuracy.Using this method of grinding, two sets of cone and cone sealing surfaces with different pitch and slip angles are selected, and the measurement results show that both the surface shape error and the surface roughness are within Within the design requirements.