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C512型(苏153)立式车床工作台主轴的上、下轴承是单油楔动压轴承,工作台导轨是普通动压滑动导轨,如图1所示。用于精加工时,由于转速较低,动压效应小,所形成的油膜压力小,致使油膜承载能力低。另外,该机床长期用于粗加工,其支承副和传动副的磨损较严重,已失掉了机床原有回转精度。为适应精加工的需要,在对该机床进行静压改装的同时,还注意解决了以下问题: (1)减少机床振动,提高主传动平稳性
C512 (Su 153) vertical lathe table spindle is a single oil wedge hydrodynamic bearings, table rail is a common dynamic pressure sliding guide, as shown in Figure 1. For finishing, due to low speed, dynamic pressure effect is small, the pressure of the oil film formed is small, resulting in low film bearing capacity. In addition, the long-term use of the machine for roughing, wear and tear on its supporting vice and transmission more serious, has lost the original rotary machine accuracy. In order to meet the needs of finishing, hydrostatic modification of the machine at the same time, also pay attention to solve the following problems: (1) to reduce machine vibration and improve the main transmission stationarity