With the development needs, China's demand for CNC milling machines is increasing. In the industry, CNC milling machines have a wide range of uses and uses. Let's take a look at what exactly is the CNC milling machine and the development of CNC milling machines in China. Since 2003, China has become the world's largest consumer of machine tools and the world's largest importer of CNC machine tools. At present, the numerical control rate of mechanical processing equipment is being improved. In 1999, the numerical control rate of our national mechanical processing equipment was 5-8%, which is currently expected to be between 15-20%. What is a CNC milling machine? Car, milling, planing, grinding, boring, drilling, electric sparking, shearing, bending, laser cutting, etc. are all mechanical processing methods. The so-called machining is to process metal blank parts into the required shape, including dimensional accuracy. And geometric precision in two ways. The equipment that can complete the above functions is called machine tool, and the CNC machine tool is developed on the ordinary machine tool. The meaning of numerical control is digital control. After the CNC system is installed on the machine tool, the machine tool becomes a CNC machine tool. Of course, the development of ordinary machine tools to CNC machine tools is not just a simple installation system. For example, from the development of milling machines to machining centers, the structure of machine tools has changed. The most important thing is to add a tool magazine, which greatly improves the accuracy. The main functions of the machining center are the functions of milling, boring and drilling. We generally refer to CNC equipment, mainly index-controlled milling machines and CNC machining centers. At present, China's various types of CNC milling machines can be produced, the level is uneven, some are world-level, and some are 10-15 years behind, but if the state supports it, it is not a problem to catch up. In recent years, with the rise of Chinese manufacturing, many European companies have closed down or been merged. The Japanese economy is in a downturn, and many machine tool manufacturers that are famous in the 1980s have closed down. Solve the electromagnetic interference problem of CNC milling machine Q: The coordinates of the empty milling machine will be automatically shifted! Data cable connected to the computer! Just unplug it (machine side) and plug it in again! Shift is non-stop, stop, emergency stop, refresh, shutdown is not used. Which teacher knows what the reason is! Thank you! A: This is a typical electromagnetic interference phenomenon. The numerical control system fully considers the existence of electromagnetic interference when designing, so the connection manual of the general numerical control system also emphasizes the wiring requirements of the machine tool, and the signal line and the power line are separately routed. The solution is to check the ground condition of the connected machine to shield the interference. In addition, the connection between the computer and the machine tool also needs to be checked, preferably with a shielded cable. Also make sure the case is grounded. Hydraulic Support System Seals
The seal of the Saifu lever hydraulic support is composed of a sealing ring, a retaining ring, a guide ring and a dustproof ring.
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Hydraulic support seal
Prevent leaks. Used in the category of hydraulic supports: drum ring, composite seal, mountain ring, bud ring, O-ring, etc. Generally rubber, polyurethane material.
Used together with the sealing ring, it has the functions of anti-crowding, guiding and reducing wear. It is generally made of phenolic XII cloth, 45% copper powder mixed with filled PTFE and other materials.
Guide ring:
It is a part used on the jack piston or piston rod to support the movement of the piston or piston rod. It can prevent the piston or piston rod from direct contact and friction with the cylinder during the movement, and protect the cylinder and the piston or piston. The rod is not damaged. Generally, it is polyoxymethylene, polytetrafluoroethylene and other materials.
Dust-proof ring: the main function is to go out and reciprocate the piston rod to expose the impurities attached to the outer surface of the cylinder, so as to prevent impurities such as external dust from entering the inside of the sealing mechanism. Generally rubber, polyurethane and other materials.