Contact with CNC machining center friends know that CNC machining process will appear oil leakage phenomenon, in fact, the location of oil leakage in the machining center is easy to see. Mainly because it is caused by accessories, or the CNC lathe cylinder oil leakage. If it’s accessories, maintenance is very simple. If it is a cylinder and then it is very troublesome, serious will lead to machine tool scrapping. Now let’s study the causes of oil leakage in CNC machining center?
CNC machining of aluminum shell
1. The oil change did not meet the requirements.
It often causes oil leakage in CNC machining center. There are three main problems in oil change. Firstly, for parts with high viscosity lubricating oil, if low viscosity lubricating oil is used randomly when changing oil, the sealing performance of corresponding box and shaft hole will be affected to some extent, and sometimes the sealing performance of these parts will be greatly reduced. Secondly, if the oil tank is not cleaned when changing the oil, the dirt in the oil tank may enter into the lubrication system, blocking the oil path and wearing the sealing parts, resulting in oil leakage. Third, when changing oil, the amount of oil is too much, especially in the parts with rotating parts, because of the agitation of rotating parts, it is more likely to cause oil spillage.
2. Improper selection and adjustment of lubricating system parts may cause oil leakage.
For example, CNC machining and maintenance personnel choose the oil pump with too high pressure or too large oil output, or when adjusting the system pressure, the pressure of relief valve, safety valve, pressure reducing valve is too high, and the flow of CNC machine tool lubrication system is too large, which does not match with the oil return system and sealing system, which will cause oil leakage.
In fact, it is not only the above points that cause oil leakage in CNC machining center. If we encounter similar problems in operation, we must do a good job of inspection and find out the causes in time to avoid unnecessary losses. After purchasing in the machining center, do a comprehensive inspection to see whether there are casting defects or parts damage. If so, contact the manufacturer in time. When operators use CNC machining center to process workpieces, they should also pay attention to the following points:
(1) For the first trial cutting process of CNC machining, the single-stage operation mode should be adopted.
(2) When the CNC milling machine starts to run automatically, the fast rate and feed rate s are in the lowest gear, and then the efficiency is improved after cutting into the workpiece.
(3) In the operation of NC milling machine, it is necessary to pay attention to the coordinate display of CNC system.
(4) Do not touch tools and chips of CNC milling machine by hand. The chip must be cleaned with a brush.
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