In the hydrostatic bearing oil supply system, except for coarse filtration and fine filtration, all other components have a protective effect on hydrostatic bearings. Based on the original system, the oil supply system was improved.
1. Connect the pressure relay and pressure gauge (in front of the accumulator) to the outlet port behind the throttle plate so that the operator can see the cavity pressure and inlet pressure. When the pressure difference is greater than a certain value, in order to immediately stop, so as not to lock the shaft. Such as: import pressure 2MPa, out of the mouth pressure 1.2 ~ 1.6MPa, below 1.2MPa will have to stop.
2. Add digital detection device
There is a clearance of 0.04~0.05mm between the main shaft of the hydrostatic bearing and the bearing, and the oil between them has a certain resistance value. The change of the resistance value can be used to know the size of the gap. Take the spindle as a pole and the bearing pad as the other pole, measure the resistance change. After this signal is processed, it is sent to the photoelectric alarm and control system amplifier to control the start and stop of the spindle motor, so as to avoid the friction between the shaft and the tile.