What are the oil leaks in cNC machining and CNC milling machines?

Numerical control milling machine processing oil leakage is divided into three states: leakage, dripping and oil flow. Under normal circumstances, a drop of oil every 0.5h on the static junction and every 6mi-drop of oil on the dynamic junction is leakage. Regardless of whether it is a dynamic joint surface or a static joint surface, when dripping oil every 2-3 minutes, it is dripping oil; more than 5 drops per minute is flowing oil. The general requirement for the equipment to achieve leakage control is that there must be no leakage at the static joint surface of the equipment, and slight leakage is allowed at the dynamic joint surface, but it is not allowed to flow to the ground. Some leakage is allowed inside the equipment, but it is not allowed to seep into the electrical box and transmission belt, and can be led back into the lubrication box.

Oil leakage will occur during CNC machining. In fact, it is easy to see the oil leakage position of the machining center. Mainly because it is caused by accessories, or oil leakage from the cylinder of the CNC lathe. If it is an accessory, maintenance is very simple. If it is a cylinder, then it is very troublesome and will cause the machine tool to be scrapped. Now let's study the reasons for the oil leakage of the CNC processing heart?

1. The oil changed by the CNC lathe does not meet the requirements. The oil changed by the CNC lathe does not meet the requirements, which will cause oil leakage in the Cn machining center to a large extent. The problems in oil change are mainly manifested in three aspects. First, for parts that use high-viscosity lubricating oil, if you change the oil to low-viscosity lubricating oil at will, it will affect the sealing performance of the corresponding box and shaft hole, and sometimes greatly reduce the sealing of these parts. Sex. Second, if the oil tank is not cleaned when the oil is changed after the CNC lathe processing, the dirt in the oil tank may enter the lubrication system, block the oil circuit, wear the seals and cause oil leakage. Third, when the oil is changed, the amount of oil is too much, especially in the parts with rotating parts, because of the stirring effect of the rotating parts, oil spills are more likely to occur.

2. The company's improper selection and adjustment of lubrication system parts causes oil leakage.

For example, when the cn processing and maintenance personnel choose an oil pump with excessive pressure or excessive oil output during maintenance, or when adjusting the system pressure, the pressure adjustment of the overflow valve, safety valve, pressure reducing valve, etc. is too high, the CNC machine tool lubrication system meteor If it is too large and does not match the oil return system and the sealing system, it will cause oil leakage

In fact, it is not just the above points that cause oil leakage in the n processing center. If we encounter similar problems in operation, we must check it in time to find the cause in time to avoid unnecessary losses. After purchasing the machining center, do a comprehensive inspection to see if there are casting defects or parts damage. If any, contact the manufacturer in time. Operators should also pay attention to the following points when using cn machining centers to process workpieces

(1) For the first trial cutting process of cn processing, single-level operation mode should be used for processing.

(2) When the automatic operation of the CNC milling machine starts, the rapid override and feedrate override S are in the lowest gear, and then the efficiency is improved after cutting into the workpiece.

(3) In the operation of the CNC milling machine processing program, it is necessary to pay attention to the coordinate display of the CNC system.

(4) It is forbidden to touch the tools and chips of CNC milling machine by hand. The chip must be cleaned with a brush.