In the process of precision machining, the locking and running guide of the column is important. Hold the rail pressure plate for X-axis, Y-axis, V-axis locking, are bolted to the upper chassis. Its working part is a movable copper piece that can be hydraulically jacked up, floating on the inside of the clamp that holds the outside of the rail, when the operator of the precision mechanical parts processing plant stops the use of the axis in the control machine panel, the oil supply system immediately moves to hit the high-pressure oil, the key part of the locking is the copper piece, the middle of the high-pressure oil jacked up and the rail tightly fit together and brake locking. Because its two ends are connected with the clamp, so it will not fall off even if it is the side cubic direction of the Y axis.
In precision machining, for the hydrostatic system, are locked by hydraulic pressure, it and the hydrostatic system using the same oil pump, the use of shunt and solenoid valve control. When the operator of the precision machining parts processing plant starts this axis, the CNC system outputs a signal to the solenoid valve action to close the high-pressure oil supply and hold the rail pressure plate to loosen the rail so that the axis can run. When the parts processing operator cancels the operation of the axis, the system will automatically output a signal to control the solenoid valve to turn on the high-pressure oil and lift the copper plate to hold on the rail and lock the axis.