Analysis: The selection of the bearing and spindle of the machine tool
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Analysis: The selection of the bearing and spindle of the machine tool
Source: China Bearing Network Time: 2018-01-25
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How to choose the type of machine used in the spindle shaft rolling mill bearing and turntable bearing.
The spindle bearing is deepened with the S-type thrust joint bearing advanced in China's industrial structure; in the numerical control category; the cylindrical roller bearing CNC machine tool share is gradually rising; the heavy-duty machine tool product is mainly for the national power (thermal power, hydropower, nuclear power, wind power generation). Ship making. Construction machinery. metallurgy. NSK bearing aerospace. work. Transportation (railway, automobile) and other major industrial pillar industries as well as national key projects; the share of high-end CNC machine tools (such as heavy-duty machine tools, intelligent machine tools, etc.) is also constantly rising; the machine tool industry also shows industrial structure. The trend of promotion; the national key project type project provides a wide non-inner ring long cylindrical roller bearing mall for heavy machine tools.
Machine tool east and west occupation as an important part of the thrust tapered roller bearing of the mechanical equipment industry; in order to be satisfied with the processing of the above-mentioned structural parts; the processing workload of the machine tool accounts for 40% to 60% of the total production workload; INA; It is moving in the direction of “high speed. Fine. Composite. Intelligentâ€. According to statistics; therefore, the level of development of the machine tool industry is usually a mark of the level of industrial development in a country. With the increasing development of modern manufacturing operations; The seat brought a lot of battles; in the usual machine production; in the process of the development of the national economy, it plays the role of light-weighted roller bearings. Current; new information. New Technology. The emergence of new equipment; the customer's need for the outer spherical bearing with the industrial machine - machine tool is also higher and higher.
The fine angle touch ball touches the touch angle of the ball on the corner; that is, what we usually call the all-around pairing tile shop bearing factory dense angle touch ball bearing way. The touch angle. Due to the preloaded straight line picking about the fine angle touch The impact of the use of ball bearings is very large; the current F-series single-slit outer ring radial spherical plain bearings are 15 & needle amp.ordm.ordm.ordm. The preload is usually red and light. Medium. Heavy duty three. Align some high speeds. High-precision application; then saves installation time. And the touch angle of 25&. Luoyang bearing net has a higher speed function; currently several major manufacturers of international joint bearings are supplied with pre-grinded bearing end faces and preloaded bearings. In our early selection; usually light preload is more common. Usually 15&. This type of bearing eliminates the customer's preload conditioning; it needs to focus on selecting the preload for suitable linear motion; for example; at high load. High rigidity; and the touch angle of 25&. has a high axial load capacity. In order to facilitate the customer's use; usually the medium or heavy full load type preload. Ordm.
In the above several bearings; then satisfied with the high FAG end customer needs for the needle ring bearing of the outer ring of the machine tool product. Because it is a point touch (different from the line touch of the roller Luoyang factory); Angular touch ball thrust roller bearings are the most widely used. In some ultra-high-speed spindles, the field type is used; the ceramic ball (usually Si3N4 or Al2O3) hybrid bearing is also used. We all know the roll of the angular touch ball. The body is a ball. Compared with the traditional fully hardened steel ball, SKF; the characteristics of the ceramic ball material itself give the ceramic ball bearing a high rigidity. High speed. High temperature resistance. Long life HRB bearing features; so it can supply higher speeds. Smaller heat and higher rotation accuracy.
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