The guide rail is a device that bears, fixes, guides the moving equipment, and reduces friction. It plays an irreplaceable key role in the operation of the machining center. In order to ensure the machining accuracy of the machining center, there are generally high requirements for the quality of the guide rail. , not only to be able to withstand high pressure, but also to have excellent flexibility.

At present, there are three main types of guide rails for machining centers on the market, that is, hard rails, linear rails, and two lines and one hard rail. When choosing to buy a machining center, the salesperson will first ask the buyer what type of guide rail they want to choose, because the guide rail is Different, its price will fluctuate significantly. Next, I will give you a detailed introduction to the different characteristics and selection skills of these three rail forms.

The characteristics and purchasing skills of different guide rails

Hard track

The so-called hard rail refers to the guide rail and the bed as a whole, the guide rail shape is cast on the bed, and then the guide rail is processed after quenching and grinding. This type of guide rail has a large sliding contact surface and has the characteristics of high rigidity, strong load capacity and good stability. It is more suitable for the processing of large molds, high hardness workpieces, or workpiece operations with relatively low precision requirements. Medium and large equipment, so the cost is also higher.

Line rail

The full name of the linear guide, also known as the rolling guide, its cutting capacity is smaller than that of the hard rail, but its service life is higher than that of the hard rail. For the machining of cutting parts, many parts that require precision machining will also choose line rails to ensure machining accuracy. Because most of them are installed on small high-speed equipment, the cost will be lower than that of hard rails.

Two lines and one hard guide

This is a relatively special form of guide rail. The two lines are the X and Y axes using linear rails, and the one hard is the Z axis using hard rails. Combine the characteristics of the two to meet more processing needs. The two-line and one-hard machining center are mainly used for heavy cutting of black metal and the processing of some molds. It is more common in machining centers with large strokes such as 850 and 1060, and the price is also higher than the previous two single-specification guide rails.

In general, hard rail, linear rail, two lines and one hard have their own characteristics and advantages. Hard rail is suitable for heavy cutting, linear rail is suitable for light cutting, two lines and one hard combine the advantages of the first two, and the price is the line The rail is lower than the hard rail, and the hard rail is lower than two lines and one hard rail. When choosing a machining center, it is necessary to choose the guide rail specifications reasonably according to the production of the enterprise, so as to effectively save the processing cost.

Conclusion

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