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Ball screw pair structure capable of improving positioning precision

A ball screw pair, positioning accuracy technology, applied in feeding devices, belts/chains/gears, mechanical equipment, etc., can solve problems such as not meeting the needs of high-precision product processing, gaps between each other, and shortening the service life of bearings , to achieve the effect of good promotion and practical value, large carrying capacity, and improved positioning accuracy

Inactive Publication Date: 2019-05-21
安顺虹特滚珠丝杠有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the use of the existing ball screw pair, because the supporting bearing and the ball screw pair are processed separately and then used after being assembled together, the assembly performance is poor.
During use, if the assembly is not good, or due to wear factors during operation, it is easy to cause a gap between them. In this way, due to poor positioning during operation, it is easy to generate large noise due to gap factors, and in severe cases Axial movement occurs, which not only affects the performance of the bearing, but also shortens the service life of the bearing, and partially shows the phenomenon of insufficient bearing capacity
It cannot meet the positioning requirements of large-scale CNC machine tools, mechatronics and high-speed precision machine tools, and accordingly cannot meet the processing needs of high-precision products

Method used

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  • Ball screw pair structure capable of improving positioning precision
  • Ball screw pair structure capable of improving positioning precision
  • Ball screw pair structure capable of improving positioning precision

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 and figure 2 As shown in the present invention, a ball screw pair structure that can improve positioning accuracy, the ball screw pair includes a ball screw 1 body and a bearing 2 arranged in the ball screw 1 body, so The ball screw 1 body includes a screw shaft 11, a nut 12, a plurality of steel balls 13, a reverser 14 and a dust-proof valve 15, and the screw shaft 11 is composed of a rolling screw shaft 111 and a bearing shaft 112 A spiral outer raceway is provided on the outer peripheral surface of the rolling screw shaft 111; the nut 12 is sleeved on the rolling screw shaft 11, and the inner peripheral surface of the nut 12 is provided with the A spiral inner raceway that matches the outer raceway, and a circulating through hole 16 formed by connecting the two ends of the inner raceway in the nut 12 along its axial direction, wherein the inner raceway Formed at the position for the rolling of the steel balls; the plurality of steel balls 13 are a...

Embodiment 2

[0025] Such as image 3 and Figure 4As shown in the present invention, a ball screw pair structure that can improve positioning accuracy, the ball screw pair includes a ball screw 1 body and a bearing 2 arranged in the ball screw 1 body, so The ball screw 1 body includes a screw shaft 11, a nut 12, a plurality of steel balls 13, a reverser 14 and a dust-proof valve 15, and the screw shaft 11 is composed of a rolling screw shaft 111 and a bearing shaft 112 A spiral outer raceway is provided on the outer peripheral surface of the rolling screw shaft 111; the nut 12 is sleeved on the rolling screw shaft 11, and the inner peripheral surface of the nut 12 is provided with the A spiral inner raceway that matches the outer raceway, and a circulating through hole 16 formed by connecting the two ends of the inner raceway in the nut 12 along its axial direction, wherein the inner raceway Formed at the position for the rolling of the steel balls; the plurality of steel balls 13 are ar...

Embodiment 3

[0029] Such as Figure 5 and Figure 6 As shown in the present invention, a ball screw pair structure that can improve positioning accuracy, the ball screw pair includes a ball screw 1 body and a bearing 2 arranged in the ball screw 1 body, so The ball screw 1 body includes a screw shaft 11, a nut 12, a plurality of steel balls 13, a reverser 14 and a dust-proof valve 15, and the screw shaft 11 is composed of a rolling screw shaft 111 and a bearing shaft 112 A spiral outer raceway is provided on the outer peripheral surface of the rolling screw shaft 111; the nut 12 is sleeved on the rolling screw shaft 11, and the inner peripheral surface of the nut 12 is provided with the A spiral inner raceway that matches the outer raceway, and a circulating through hole 16 formed by connecting the two ends of the inner raceway in the nut 12 along its axial direction, wherein the inner raceway Formed at the position for the rolling of the steel balls; the plurality of steel balls 13 are ...

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Abstract

The invention discloses a ball screw pair structure capable of improving the positioning precision. The ball screw pair structure comprises a ball screw body and a bearing. The ball screw body comprises a lead screw shaft, a nut, multiple steel balls, a reverser and a dustproof valve. The lead screw is composed of a rolling lead screw shaft and a bearing lever shaft. An outer roller bed is arranged on the outer circumferential face of the rolling lead screw shaft. An inner roller bed is arranged on the inner circumferential face of the nut. The multiple steel balls are arranged in a rolling channel formed by the outer roller bed and the inner roller bed and can freely roll in the channel. The bearing comprises an inner ring, an outer ring, a rolling body and a holding frame. The inner ringis integrally formed in the bearing lever shaft. The rolling body is arranged among the inner ring, the outer ring and the holding frame, and a sleeve ring roller bed is arranged in the holding frame. The rolling body can freely operate in the sleeve ring roller bed. By means of the ball screw pair structure, the integrated structural design is adopted, the positioning requirement of a high-speedprecision machine tool can be met, the beneficial effects of being good in assembling performance, high in bearing capacity and low in noise are achieved, and high popularization and utility value isachieved.

Description

technical field [0001] The invention relates to the technical field of bearing positioning in high-speed precision machine tools, in particular to a ball screw pair structure capable of improving positioning accuracy. Background technique [0002] The ball screw pair is a helical transmission element with steel balls as the rolling body between the screw and the nut. It can convert rotary motion into linear motion, or convert linear motion into rotary motion. Therefore, the ball screw pair is not only the original transmission element , is also the conversion element between linear motion and rotary motion. Its main function is to convert rotary motion into linear motion, or torque into axial repetitive force, while being characterized by high precision, reversibility and high efficiency. Because it has the advantages of small frictional resistance, high transmission efficiency, sensitive movement, and gapless transmission, it also has the characteristics of high precision,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q5/40F16H25/22
Inventor 方亮
Owner 安顺虹特滚珠丝杠有限责任公司
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