What are the oil leaks of 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 joint surface and a drop of oil every 6mi on the dynamic joint surface are 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 running oil. The general requirement for the equipment to achieve leakage control is that there should be no leakage at the static joint surface of the equipment, slight leakage is allowed at the dynamic joint surface, but 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 explore the reasons for oil leakage in the CNC machining center.

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 CNC 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, changing the oil to low-viscosity lubricating oil will affect the sealing performance of the corresponding box, shaft hole, etc., and sometimes greatly reduce the sealing of these parts. Sex. Second, if the oil tank is not cleaned when the oil is changed on the CNC lathe, the dirt in the oil tank may enter the lubrication system, block the oil circuit, wear the seals and cause oil leakage. When the oil is changed, the oil is added too much, especially in the parts with rotating parts. Due to 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, and the lubrication system of the CNC machine tool flows If it is too large and does not match the oil system and sealing system, it will cause oil leakage.

The fact that the oil leakage of the Cnc machining center is not just the above points. If we encounter similar problems in the operation, we must do a good check and 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 so, 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-stage 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 the CNC milling machine by hand. The chip must be cleaned with a brush.