Angular contact ball bearing pre-tightening spacer ring measuring device and using method thereof

A technology of angular contact ball bearings and measuring devices, which is applied in the direction of measuring devices, mechanical bearing testing, and the use of stable tension/pressure to test the strength of materials, etc. It can solve problems such as the inability to meet the adjustment requirements of machine tool spindle bearings, and achieve flexible use. The effect of improving the rotation accuracy

Active Publication Date: 2020-12-29
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of manufacturing technology, the requirements for the rotation accuracy and speed of the machining center are getting higher and higher. The empirical value method and the dial feeling method can no longer meet the adjustment requirements of the machine tool spindle bearing.

Method used

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  • Angular contact ball bearing pre-tightening spacer ring measuring device and using method thereof
  • Angular contact ball bearing pre-tightening spacer ring measuring device and using method thereof
  • Angular contact ball bearing pre-tightening spacer ring measuring device and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Taking the adjustment of NSK7018C angular contact ball bearings on the spindle of the machining center as an example, the front bearing 3 and the rear bearing 6 are installed on the shaft 7 in a back-to-back manner, and the fixed value spacer ring 4 is placed between the front bearing 3 and the rear bearing 6 for adjustment. Support, the fixed value spacer ring 4 is in contact with the outer rings of the two bearings, put the shaft 7 of the bearing group into the frame base 5 and lock it in the positioning slot at the bottom of the frame base 5, press the sleeve 2 It is on the same axis as the shaft 7, so that the pressure sleeve 2 corresponds to the place where the bearing group needs to be pressurized. Press the pressurization button on the control box 8, and the cylinder drives the pressure sleeve to move downward to apply pre-tightening force to the bearing. Table 1 shows the average value of preload and axial clearance of NSK bearing 70C series. In order to reduce t...

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PUM

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Abstract

The invention discloses an angular contact ball bearing pre-tightening spacer ring measuring device and a using method thereof. The angular contact ball bearing pre-tightening spacer ring measuring device comprises an air cylinder, a pressing sleeve, a frame type base and a shaft; the air cylinder is fixed to the top of the frame type base, the air cylinder is connected with the pressing sleeve, and the pressing sleeve is arranged in the frame type base and is close to the top of the frame type base; and the shaft is arranged on the bottom face of the frame type base, the shaft and the pressing sleeve are arranged on the same axis, the shaft is used for being sleeved with a bearing set, and the pressing sleeve is used for exerting pressure on the bearing set under control of the air cylinder. According to the angular contact ball bearing pre-tightening spacer ring measuring device and the using method thereof, the thickness of a spacer ring can be accurately measured according to the pre-tightening force requirements of bearings of different manufacturers, so that the rotating precision and rigidity of a spindle bearing after pre-tightening are effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of bearing pretightening spacer ring measurement, in particular to a measuring device for an angular contact ball bearing pretightening spacer ring and a method for using the same. Background technique [0002] At present, the spindle system of CNC machining centers generally adopts back-to-back angular contact ball bearings in groups. In order to improve the rotation accuracy and rigidity of the grouped bearings, spacer rings of different thicknesses are equipped between the inner and outer rings of the bearings, so as to obtain different degrees of anticipation. Tight force. Generally, in the field of maintenance, the thickness of the inner and outer spacer rings is adjusted using the empirical value method and the dial feeling method. This method requires the maintenance personnel to have extremely rich maintenance experience, and is only suitable for low machining accuracy requirements and low speed. co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04G01N3/12
CPCG01M13/04G01N3/12G01N2203/0044G01N2203/0676G01N2203/0682Y02E30/30
Inventor 曹永阳白海滨白新恒田雅旭秦岗李刚秦晟海
Owner AECC AVIATION POWER CO LTD
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