高速电主轴油气润滑参数优化系统及平台设计

Design of Oil-air Lubrication Parameter Optimization Test Systemand Platform for High-speed Spindles

油气润滑是高速电主轴最高效的冷却润滑方式,然而要达到最佳的润滑效果必须针对不同型号轴承以及不同工况设定准确的油气润滑参数,这就需要可靠的试验装备进行大量的试验分析。为此搭建模拟电主轴运行工况的实验平台,设计油气润滑系统并设计一种兼具油气混合器和油气分配器功能的油气混合分配器。试验结果表明:试验平台最佳的转速范围为0~30 000 r/min,满足高速机床主轴试验的转速要求;油气混合分配器供油误差满足±10%的行业标准,使用寿命达到12万次。因此搭建的试验平台和油气润滑系统对高速电主轴油气润滑参数的试验研究有较高的可靠性。

Oil-air lubrication is the most effective cooling and lubrication method for high speed spindle.However,to achieve the best lubrication effect,accurate oil air lubrication parameters must be set for different types of bearings and different working conditions.This requires reliable experimental equipment to conduct a large amount of experimental analysis.An experimental platform was built to simulate the operating conditions of the spindle,the oil-air lubrication system and an oil-air mixing and distributor that combines the functions of oil-air mixer and oil-air distributor were designed.The experimental results show that the optimal speed range of the experimental platform is from 0 to 30000 r/min,which meets the speed requirements for high-speed machine tool spindle testing.The oil feeding error of the oil-air mixing and distributor meets the industry standard of±10%,and its service life reaches 120000 times.Therefore,the established experimental platform and oil-air lubrication system have high reliability in conducting experimental research on oil-air lubrication parameters of high speed spindle.