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Lead screw supporting bearing assembly

A technology for supporting bearings and bearing groups, applied in the direction of bearing components, rigid supports of bearing components, shafts and bearings, etc., can solve the problems of instability, high heat generation of bearings, easy damage, etc., to achieve convenient adjustment, high position accuracy, Guaranteed service life

Pending Publication Date: 2022-03-18
ZHEJIANG UTE BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the screw of the machine tool is installed with a nut to tighten the screw. This large pulling force is also directly borne by the bearing, which has an extremely adverse effect on the bearing, which makes the bearing generate a lot of heat and is easily damaged.
Alternatively, both the front and rear screw bearing groups are installed in a DB group, and the outer ring of the rear screw bearing group swims without adding axial tension to the screw, so that the position accuracy of the drag plate on the screw is low, and it will follow the lead screw. changes in temperature and is very unstable

Method used

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  • Lead screw supporting bearing assembly
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  • Lead screw supporting bearing assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0037]The structure and working principle of this embodiment are basically the same as that of Embodiment 1, the difference is that, as figure 2 As shown, the front screw bearing group 2 includes a front bearing seat 4, and the front bearing seat 4 is provided with a front bearing group 5 assembled in DT. The front end of the front bearing group is tightened with a nut 6, and the leading screw 1 is screwed with a front gland 9 that is tight with the front bearing group 5 outer rings.

[0038] The rear screw bearing group 3 includes a rear bearing block 14, the rear bearing block 14 is provided with a rear bearing group 15 assembled in DT, an adjusting ring 10 is screwed on the screw 1, and the disc spring group 8 It includes a disc spring 12 and a disc spring adjusting ring 13 sleeved on the adjusting ring 10. One end of the disc spring adjusting ring 13 is tight against the disc spring 12, and the other end is tight against the outer ring of the rear bearing group 15. The sa...

Embodiment 3

[0040] The structure and working principle of this embodiment are basically the same as that of Embodiment 1, the difference is that, as image 3 As shown, the rear screw bearing group 3 includes a rear bearing block 14, the rear bearing block 14 is provided with a rear bearing group 15 assembled in DT, and the rear bearing block 14 is also provided with a screw screwed on the lead screw 1. Rear bearing group inner ring locating sleeve 18 and rear bearing group outer ring locating sleeve 19, rear bearing group outer ring locating sleeve 19 is tightly matched with rear bearing group 15 outer ring, rear bearing group inner ring locating sleeve 18 and rear bearing group 15 There is a disc spring group 8 between them, and the disc spring group 8 is press fit with the inner ring of the rear bearing group 15. The front screw bearing group 2 includes the front bearing seat 4, and the front bearing seat 4 is provided with a DT assembly The front bearing group 5 is screwed on the screw...

Embodiment 4

[0042] The structure and working principle of this embodiment are basically the same as that of Embodiment 1, the difference is that, as Figure 4 As shown, the front screw bearing group 2 includes a front bearing seat 4, the front bearing seat 4 is provided with a front bearing group 5 assembled in DT, the front bearing seat 4 is provided with a front gland 9, and the front gland 9 It is tightly matched with the outer ring of the front bearing group 5, and the screw 1 is provided with a tightening nut 11 at the rear end of the front bearing group screwed with the screw 1, between the tightening nut 11 at the rear end of the front bearing group and the front bearing group 5 A disc spring group 8 is provided, and the disc spring group 8 is closely matched with the inner ring of the front bearing group 5 .

[0043] The rear screw bearing group 3 includes a rear bearing seat 14, which is provided with a rear bearing group 15 assembled in DT, and an inner ring positioning assembly...

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Abstract

The invention belongs to the technical field of machine tool lead screw moving parts, and relates to a lead screw supporting bearing assembly. The device comprises a lead screw, a front lead screw bearing set and a rear lead screw bearing set are arranged on the lead screw, and the front lead screw bearing set or the rear lead screw bearing set is provided with a disc spring set. According to the invention, not only is the service life of the bearing ensured, but also the carriage driven by the lead screw has higher position precision.

Description

technical field [0001] The invention belongs to the technical field of machine tool screw moving parts, and relates to a screw support bearing assembly. Background technique [0002] At present, the screw of the machine tool is installed by using a nut to tighten the screw. This large pulling force is also directly borne by the bearing, which has an extremely adverse effect on the bearing, which makes the bearing generate a lot of heat and is easily damaged. Alternatively, both the front and rear screw bearing groups are installed in a DB group, and the outer ring of the rear screw bearing group swims without adding axial tension to the screw, so that the position accuracy of the drag plate on the screw is low, and it will follow the lead screw. The temperature changes and is very unstable. Contents of the invention [0003] The object of the present invention is to provide a screw support bearing assembly to solve the above problems. [0004] To achieve the above object...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C35/067F16H25/20
CPCF16C35/067F16H25/20F16H2025/2062
Inventor 郑子勋郑蕾婷郑懿焜
Owner ZHEJIANG UTE BEARING