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An Analysis Method Applied to Thermal Dynamic Performance of High Speed ​​Spindle Unit

An analysis method and thermal dynamic technology, applied in the mechanical field, can solve problems such as inaccurate prediction and large difference

Active Publication Date: 2020-11-03
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existing heat transfer model of the spindle unit is quite different from the actual situation, and the prediction is not accurate enough

Method used

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  • An Analysis Method Applied to Thermal Dynamic Performance of High Speed ​​Spindle Unit
  • An Analysis Method Applied to Thermal Dynamic Performance of High Speed ​​Spindle Unit
  • An Analysis Method Applied to Thermal Dynamic Performance of High Speed ​​Spindle Unit

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Embodiment 1

[0162] Such as Figure 1-10 An analysis method applied to the thermal dynamic performance of the high-speed spindle unit shown includes the following steps:

[0163] 1) Establish a quasi-static model of angular contact ball bearings, including the internal geometric compatibility relationship of the bearing considering thermal displacement and centrifugal displacement of the inner ring, the force relationship between the rolling element and the inner ring of the bearing, and the relationship between the load and displacement of the bearing as a whole; 2) Analyze the thermal displacement and centrifugal displacement of the bearing ring under different installation methods; 3) Simplify the model of the spindle unit and divide the thermal network nodes according to the needs, determine the heat transfer path of the bearing under different lubrication methods, and establish Based on the heat transfer network model of the spindle unit and the heat transfer equation of the spindle u...

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Abstract

The invention discloses an analysis method applied to the high speed main shaft unit thermal dynamic performance. The internal geometric compatibility relation of an angular contact ball bearing underthe thermal effect is cleared, more accurate bearing loop thermal displacement calculation formulas under different installing modes are built, and on the condition that the contact thermal resistoris considered, a main shaft unit thermal transmission network model under different lubricating modes is determined, the dynamic coupling relation between bearing friction heat and main shaft unit heat displacement under the heat effect is considered, the coupling calculation process is built, and therefore the thermal dynamic performance of the high speed main shaft unit can be mastered more accurately and reasonably.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to an analysis method applied to the thermal dynamic performance of a high-speed spindle unit. Background technique [0002] With the continuous development of industrial technology, the machining accuracy of machine tools is increasing day by day, in which the main shaft unit, namely the main shaft bearing system, plays an important role. Compared with sliding bearings, rolling bearings have the advantages of simple structure, convenient installation, less fuel consumption, and can bear radial and axial loads at the same time. Therefore, rolling bearings are widely used as one of the main shaft supports in various types of main shaft units. Most of them are high-speed angular contact ball bearings. During the high-speed operation of the spindle system of the machine tool, the frictional heat generated by the bearing is one of the main heat sources of the system. A large amount...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00G01N25/20
CPCG01M13/00G01N25/20
Inventor 周长江屈泽峰胡波陈国淳
Owner HUNAN UNIV