The rotating head of the EDM drilling machine is to seal and introduce the high-pressure working fluid when rotating. The rotating head of the electric spark drilling machine should be installed on the guide rail slider to realize the clamping, rotation and conduction of the electrode. A three-phase AC motor generally drives the electric spark drilling machine with a gear pair in the middle to reduce the speed. The rotating head of the electric spark drilling machine rotates at about 100 revolutions per minute.
Because the rotating head of the electric spark drilling machine has been used for a long time, the sealing ring of the rotating head is worn out, causing water leakage. The rotating head can be divided into upper leakage and lower leakage. The upper part of the water leakage is mainly caused by the water's high pressure and high temperature. If you want to replace it, you only need to replace the upper O-ring seal. If the lower part of the water leak occurs, you need to replace the electrode seal.
1. If water is found to flow out of the gear pair, it means that the upper part of the rotating head is leaking. First, remove the protective glass cover of the rotating head of the electric spark drill, remove the high-pressure pipe, and remove the two inner hexagons. Remove the screws, and then pull out the bushing.
2. Remove the three screws of the gland so that the O-rings inside can be removed. Just replace two new O-rings and finally assemble the rotating head. Pay attention to tightening a few inner hexagons, but don't be too tight, just appropriate. At this time, it is necessary to observe whether the spindle of the EDM drilling machine rotates flexibly and whether there is any blocking phenomenon. Suppose the spindle rotation is found to have a dead point. In that case, it means that it has not been installed and needs to be re-adjusted until the spindle rotates flexibly. Otherwise, the life of the O-ring seal will be greatly reduced, and the seizure phenomenon will occur.
The above is DMNC's sharing of knowledge about the rotating head of the EDM drilling machine. If you need to learn more about EDM, you can visit our website. You are welcome to consult us online!