Reasons for Bearing Position Wear of Roller Press and On-line Solutions
Bearing position wear of roller press is a common equipment fault in the process of roller press operation. What causes bearing position wear of roller press?
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Thermal characteristics of high-speed precision spindle bearing
by：Waxing
2020-09-12
High-speed motorized spindle is the core component of high-speed machine tools, the precision of the electric spindle unit of each parts are usually mu m class, like beating for 1 ~ 3 microns, the spindle stiffness in general is 100 -
300 n/mu m, therefore, the motorized spindle precision error and distortion of the parts itself is very small.
However, high speed, bearing calorific value is large, lead to bearing temperature rise is very high, and cause the thermal deformation.
Error is greater than accuracy error caused by the thermal deformation and deformation.
And the thermal deformation directly change the bearing pre-tightening condition, effect on the characteristic of bearing stiffness and the machining precision of motorized spindle, serious when, or even lead to bearing hot bite, make the motorized spindle are destroyed.
Motorized spindle heat problems have reduced the reliability of its application in practical production.
Therefore, thermal analysis was carried out on the bearing and bearing characteristics of hot to improve the stability and reliability of motorized spindle machining is extremely important.
High speed precision angular contact ball bearing is the most widely used type of bearings in machine tool spindle unit, in this paper, with this kind of bearing as the research object, the meaningful high-speed precision spindle bearing system for the thermal characteristics of analysis and calculation.
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