- Design reasons
One of the main reasons for machine tool leakage is due to unreasonable design. Due to the neglect of the particularity of sealing technology, the design of sealing structure is unreasonable, resulting in the leakage of machine tool. Its performance is that the design scheme of the sealing structure is not suitable for the working pressure, working temperature, medium characteristics and environmental conditions; ventilation, oil return, liquid guide device and other measures are not considered in the design, such as the place where the oil return labyrinth groove should be set is not set; computer Gong processing | mechanical parts processing | Dongguan CNC machining center | Dongguan high-speed computer gong processing bearing seat is lubricated with thin oil and the limit value is high The rotation speed is very high, the oil temperature is very high, but there is no vent. Wechat for metal processing, with good content, is worthy of attention. In the design of sealing structure, we did not pay attention to anti-corrosion, anti vibration, pressure equalizing and dredging measures, but only one-sided considered plugging; the screw holes on the box were designed as through holes without sealing measures; the box cover did not take corresponding sealing gasket; the matching relationship between the shaft and the box hole was unreasonable, the gap was too large; the interference between the sealing ring and the shaft did not meet the standard requirements; the design of the sealing groove was not up to standard All these will cause oil leakage.
- Manufacturing reasons
This is one of the important reasons for the leakage. The main problems are machining accuracy and surface roughness. For example, only turning is used in the place where grinding treatment is needed, resulting in the surface roughness of the processing place not meeting the requirements, resulting in leakage; for various pumps and valves in the hydraulic system, the leakage is controlled by clearance. If the manufacturing accuracy is out of tolerance and does not meet the design requirements, the internal leakage will be increased and the work efficiency will be reduced; the leakage often occurs in castings If preventive measures are not taken, these defects are often the source of oil leakage in the process of equipment use.
- Reasons for equipment installation
The quality of equipment installation also has a greater impact on leakage. In practical work, equipment installation personnel do not assemble according to the correct assembly process, computer gong processing, mechanical parts processing, Dongguan CNC machining center, Dongguan high-speed computer gong processing or equipment installation personnel do not install correctly, assembly errors, or assembly process confusion, etc. are easy to cause equipment investment Leakage occurs after use. Moreover, when the equipment installation personnel carry out the assembly operation, if they use the big hammer and other tools to operate the place that should be knocked lightly, it will cause oil leakage due to the damage of individual parts of the equipment. Wechat for metal processing, with good content, is worthy of attention. Because the installation personnel do not pay attention to the working principle of the equipment or ignore the technical requirements of the drawings, the reverse installation of the framework oil seal and other seals will inevitably lead to leakage.
- Reasons for sealing elements and materials
Improper selection of sealing elements and materials will shorten the service life of the sealing device, lead to poor sealing performance and easily lead to equipment leakage. For example, the use of hardness and working pressure does not adapt to the sealing rubber, or the selection of internal and external diameter is not suitable for the sealing ring. In addition, the oil resistant rubber products used for oil pipes and pipe joints will be aged, hardened and brittle due to long-term use, resulting in oil leakage at the joints of oil pipes and pipe joints.
- Operational reasons
Improper operation and poor maintenance are the most direct causes of equipment leakage. If too much oil is added, the transmission shaft of the spindle box of the machine tool is completely immersed in the oil, the computer gong processing, mechanical parts processing, Dongguan CNC machining center, Dongguan high-speed computer gong processing, when the gear rotates, the pressure in the box increases and causes oil leakage; or the vent hole is blocked but not treated, the packing gland is not compacted, and the micro leakage is not treated in time, and the sealing element cannot be replaced after damage If the sealing parts and sealants are not used correctly, there are paint, burr, impurity or bruise on the joint surface of the upper and lower boxes of the reducer, which makes the joint surface not tight. If the sealants are not used after the equipment is sealed, the equipment will leak.
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