Bearing grinder hydrostatic bearing maintenance method

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Hydrostatic bearing its high rotary precision steel, high capacity, no wear and durability. An orifice restrictor:

(1). Internal throttle to external throttle, and to install a pressure gauge real-time display of the upper and lower cavity pressure. Maintenance, in particular, can easily be cleaned regularly, the internal restrictor unmatched.

(2). Throttling ratio. Throttling than the theoretical value of β is between 1.2 to 1.5, based on years of experience to preferably 1.25. Such maintenance, geometrical precision spindle, front and rear bearing geometric accuracy, concentricity, roundness and taper strict control, in order to ensure that the value of β. E values ??(spindle and the geometric center of the eccentric amount of the pad) is determined according to the carrying capacity of the machine tool, so that the optimum value of β.ball thrust bearing

(3) when the spindle is not installed, the oil chamber, oil outlet of the oil column must be the same (observation), if not, should be taken to change the restrictor aperture changes its flow. 4 cavities, for example, generally u nder, left and right chamber of the oil column in the range of 20 ~ 25mm, a small pore diameter was 0.25 to 0.4 mm.

Film feedback restrictor:

The film feedback throttle bearing stiffness is great, but the machine is running, often hold tile, brushed off pressure phenomenon. The most critical feedback film film practice that the bearing locking the main reason for napping: â'  The film plastic deformation due; â'¡ feedback slow. The film did not react when the external load mutations axis and tile has been friction; â'¢ film fatigue. Film using a long time, fatigue deformation, the equivalent of changing the feedback parameters.bearing factory in china

Increase the thickness of the film and to switch to some of the fatigue resistance of materials, can receive good results. The generally rigid film, a pre-load, reserved slit. Practice: 1.4mm thick membrane to 4mm thick rigid film, the next the cavity pad 0.05mm thick aluminum foil, adjusted to higher than the ideal position 0.05mm position of the spindle. When the spindle force (wheel weight, cutting force), just return to the ideal center.