Hydraulic press is one of the first types of equipment to check the quality of steel pipe products. It can perform certain pressure and hydraulic pressure experiments on steel pipes for a certain period of time, and be proficient in and understand these intelligent leak tightness and other existing shortcomings, and then can judge Find out whether these steel pipes have the pressure to prevent leakage, and whether the raw materials can meet the needs of the process planning. This article analyzesmany problems that are easy to appear in the hydraulic system of hydraulic presses , and summarizes the corresponding countermeasures.

First, the cause of the fault of the hydraulic system of the hydraulic press

Many people know that the most common cause of problems in machinery is seizures due to the lack of smooth bearings. According to incomplete statistics, more than 90% of the system's mechanical problems are caused by the lack of smoothness. Many of these problems are also caused by smoothness.

There are also some hydraulic presses that are obsolete equipment imported from abroad. Basically, all spare parts use British units. Therefore, it is more difficult to buy Austria in the country. As a result, many bearings are difficult to use for a long time because of the lack of accessories, exceeding their own service life. , And this is why the machinery often has problems. The first manifestation of general bearing problems is what we generally call "running outer ring" and "running inner ring". That is to say, there is a large gap between the hollow of the outer ring and the inner shell of the mechanical bearing, which may cause the bearing to die due to the lack of smoothness, and the quantitative movement will occur after a certain operation process, so it is easy to make the mechanical bearing or a good shell of the equipment Wear with the bearing neck.

The second is the fundamental problem of the main drive bearing. We can divide this fundamental problem into two types, one of which has been mentioned earlier, that is, the journal wear that matches the inner ring of the bearing. The general repair method is to choose some coated journals, and burn the smooth surface by means of coating. The other is that the transmission keyway of the hydraulic system of the equipment is damaged. This is because of the large load received by the hydraulic press clutch and the transmission key of the braking device. Assuming there is a large gap between the key and the keyway, then under liquid shock, The gap will get bigger and bigger, and then the keyway will be damaged. In view of the now damaged keyway phenomenon, we need to process the principle of correcting the keyway and then equipping the keys, that is, to find the method of the axis in the CNC machining center for deep machining.