Shenzhen cnc machining generally refers to computer digital control precision machining, mainly used in the processing of precision hardware parts. Here to understand the different guide rails in the next cnc machining have what advantages?
A, liquid hydrostatic guide of the two guide operating surface of the question open oil cavity, pass into the lubricant with a certain pressure, can constitute a hydrostatic oil film, so that the guide operating surface in pure liquid conflict, no wear and tear, good precision adherence; at the same time, no certain pressure of the lubricant, can constitute a hydrostatic oil film, so that the guide operating surface to keep clean, good impact resistance. Hydrostatic guide can be divided into liquid hydrostatic guide and gas hydrostatic guide.
Second, the slide rail guide has the advantages of simple structure, easy manufacturing, high stiffness, high vibration resistance. Polytetrafluoroethylene guide soft tape and epoxy wear-resistant guide coating commonly used guide plastic. The paste plastic slider is characterized by good impulse performance, good wear resistance, smooth movement, vibration damping performance and craftsmanship.
Third, the tumbling guide is the ball, roller, needle and other tumbling body placed between the guide surface, so that the sliding conflict between the guide surface into a rolling conflict. Relative to the sliding guide, the advantages of tumbling guide is: high activity, and its dynamic conflict coefficient and static conflict coefficient difference is very small, so at low speed movement, not easy to present creeping phenomenon; (high positioning accuracy, repeat positioning accuracy, small wear, low precision requirements, easy to wear), low precision requirements, long life. However, the rolling guide has poor anti-vibration performance and high requirements for protection.