High-rigidity double-line liquid hydrostatic bearing

• Main Authors: WEI ZHUJUN, WU KONGPING, JIANG DAOSHUN, FU HENGXUN, YAO MINJU
• Format: Patent
• Language: Chinese; English
• Published: 06.03.2013
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

The invention provides a high-rigidity double-line liquid hydrostatic bearing which is characterized in that two lines of hydrostatic oil chambers, an outer-side oil chamber (17) and an inner-side oil chamber (18) are arranged along the axial direction of the inner hole of a bearing (2), four outer-side oil grooves (22) are arranged along the peripheral direction of the outer-side oil chamber (17), four inner-side oil grooves (19) are arranged along the peripheral direction of the inner-side oil chamber (18) as well, the end of the bearing (2) is provided with an outer-side oil inlet hole (14) and an inner-side oil inlet hole (15), the outer-side oil inlet hole (14) is communicated with the outer-side oil grooves (22), and the inner-side oil inlet hole (15) is communicated with the inner-side oil grooves (19). The two double-line hydrostatic bearings (2) are arranged on the main shaft of a machine tool, and the two double-line hydrostatic bearings (2) are respectively arranged at thea front bearing end (4) an