High-speed machine tool industry in the development of heavy industry is extremely rapid, invisible led the development of the chain industry, and bearings as the most important part of high-speed machine, but also play an irreplaceable role; with the development of science and technology, high-speed machine tool bearings Speed is getting higher and higher speed range is increasing, therefore, the stability of the bearing high-speed operation requirements are getting higher and higher. So what is its selection criteria? The following by the World technical staff to tell you:
High speed machine
1, speed and temperature rise
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High-speed machine tool spindle bearing temperature rise is an important factor limiting the bearing speed. Under normal circumstances, the correct choice of bearing type, tolerance level, configuration, clearance (preload) size, lubricant and lubrication methods, to a certain extent, improve the high-speed performance of rolling bearings.
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2, stiffness and vibration resistance
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To ensure the quality of high-speed machine tool processing, the spindle system must be sufficient rigidity, otherwise it will produce a large copy error or even flutter. Anti-vibration is the ability to resist forced vibration and self-excited vibration. The vibration resistance of the spindle assembly depends on the stiffness and damping of the spindle and bearing. The use of preloaded rolling bearings can effectively improve the stiffness of the spindle system.
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3, life and carrying capacity
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For the general high-speed machine, the life of the spindle assembly mainly refers to the use of the spindle to maintain the accuracy of the period, therefore, requires the accuracy of bearing performance to meet the requirements of the spindle component life. For heavy machine tools or powerful cutting machine tools, bearing capacity should first be considered.
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4, noise
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In high-speed grinding machine, grinding head bearing noise is the main component of the noise, should use low noise rolling bearings.
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The above is to share with you today, the knowledge of high-speed machine as a whole natural marble as the body frame, after precision grinding processing to ensure that the mechanical precision and low vibration; currently widely used in mobile phones and tablet computer keys and lens ring, gold , Silver, titanium, stainless steel jewelry, toys, cars, bronze, small molds and other industries CNC machining.