WO2013189161A1 - 一种新型行星滚柱丝杠副 - Google Patents

一种新型行星滚柱丝杠副 Download PDF

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Publication number
WO2013189161A1
WO2013189161A1 PCT/CN2012/087047 CN2012087047W WO2013189161A1 WO 2013189161 A1 WO2013189161 A1 WO 2013189161A1 CN 2012087047 W CN2012087047 W CN 2012087047W WO 2013189161 A1 WO2013189161 A1 WO 2013189161A1
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WO
WIPO (PCT)
Prior art keywords
nut
planetary roller
screw
half nut
roller screw
Prior art date
Application number
PCT/CN2012/087047
Other languages
English (en)
French (fr)
Inventor
胡玉华
王绍忠
Original Assignee
江苏品德机电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 江苏品德机电科技有限公司 filed Critical 江苏品德机电科技有限公司
Publication of WO2013189161A1 publication Critical patent/WO2013189161A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
    • F16H25/2252—Planetary rollers between nut and screw

Definitions

  • the present invention relates to the technical field of mechanical parts, and in particular to a novel planetary roller wire pair.
  • the pre-tightening force adjustment of the general planetary roller screw nut and the multi-thread screw depends on the gasket between the double nut and the double nut thread pre-tightening.
  • the above two structures are bulky. More labor and materials.
  • There is a single planetary roller screw nut which is an axially split intermediate clamp gasket, and the pre-tightening force is adjusted by grinding the gasket. This structure consumes a lot of labor.
  • An object of the present invention is to provide a new type of planetary roller wire pair, which can avoid the problem of consumables and time consuming of the pre-tightening force adjustment structure of the existing planetary roller screw nut, and has small friction and high efficiency. Long life and large carrying capacity.
  • a new type of planetary roller screw pair which comprises a multi-start thread screw, a nut, a roller, a guide ring, an internal ring gear, The nut is divided into a half nut A and a half nut B along the axial direction of the multi-thread screw.
  • the half nut A or the half nut B is provided with an adjusting screw hole, and the adjusting screw hole is provided with a set screw.
  • a positioning hole is disposed between the half nut A and the half nut B, and a positioning pin is disposed in the positioning hole.
  • the outer side of the guide ring is provided with a circlip for the hole.
  • the present invention has the following beneficial effects: Compared with the ball screw pair, the raceway of the planetary roller screw pair is not limited by the size and the lead size of the steel ball, and the raceway with ultra-small pitch can be processed.
  • the contact point of the roller with the lead screw in the axial direction is greatly increased, so the bearing capacity and rigidity are larger than that of the screw of the same specification.
  • the planetary gear train structure allows the planetary roller screw pair to have a large transmission ratio without being limited by the circulation device.
  • the contact radius between the planetary roller and the lead screw and the nut is increased, and all the rollers are simultaneously loaded, so the anti-wear performance of the planetary roller is enhanced, and the precision retention of the planetary roller screw pair is improved.
  • Planetary train structure makes sliding friction Switching to rolling friction, compared with the traditional ordinary lead screw, can realize the mutual transformation of the rotary motion and the linear motion. It is easy to install and maintain, and is widely used in the manufacture of precision instruments, CNC machine tools, medical equipment and aerospace, metallurgy, mining and other processing centers at home and abroad.
  • FIG. 1 is a schematic structural view of the present invention.
  • FIG. 2 is a cross-sectional view taken along line C-C of FIG. 1.
  • FIG. 3 is a cross-sectional view taken along line D-D of FIG. 1.
  • FIG. 4 is a cross-sectional view taken along line E-E of FIG. 1.
  • a new type of planetary roller screw pair which includes a multi-thread screw 1, a nut, a roller 4, and a guide Ring 2, inner ring gear 3, the nut is divided into a half nut A6 and a half nut B7 along the axial direction of the multi-thread screw 1.
  • the half nut A6 or the half nut B7 is provided with an adjusting screw hole 11, and the adjusting screw hole 11 is provided with a set screw 9, and the half nut A6 can be adjusted by adjusting the set screw 9. Preload between the half nuts B7.
  • the screw 8 is connected between the half nut A6 and the half nut B7, and the half nut A6 and the half nut B7 are integrally connected by the screw 8.
  • a positioning hole 12 is disposed between the half nut A6 and the half nut B7, and the positioning pin 12 is provided with a positioning pin 10, and the half nut A6 and the half nut B7 can be positioned by the positioning pin 10. .
  • the outer side of the guide ring 2 is provided with a circlip for the hole 5, and the circlip 5 is used to enhance the firmness and sealing of the roller 4 and the guide ring 2 through the hole, and the structure is compact.
  • the motion principle of the present embodiment the multi-thread screw 1 is regarded as a sun gear, the nut is regarded as a center wheel, and the 4 rollers are regarded as a planetary wheel, when the multi-head After the threaded screw 1 rotates and the degree of freedom of rotation of the nut is defined, the roller 4 performs planetary motion in the circumferential direction, that is, the roller 4 performs both the rotation motion and the revolving motion around the multi-thread screw 1, and the roller 4 passes through the spiral.
  • the drive converts the rotary motion of the multi-thread screw 1 into a linear reciprocating motion of the nut.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

一种新型行星滚柱丝杠副，包括多头螺紋丝杠（1）、螺母、滚柱（4）、导环（2）、内齿圈（3），所述螺母沿所述多头螺紋丝杠轴线方向分成半螺母A（6）和半螺母B（7）。该行星滚柱丝杠副能够避免现有行星滚柱丝杠副螺母预紧力调整结构的耗材、耗时多的问题，具有摩擦小、效率高、寿命长、承载能力大的特点。

Description

一种新型行星滚柱丝杠副 技术领域
[0001] 本发明涉及机械零件技术领域， 具体涉及一种新型行星滚柱丝副。
背景技术
[0002] 一般的行星滚柱丝杠副螺母与多头螺纹丝杠配合的预紧力调整， 是依靠 磨配双螺母之间的垫片以及双螺母螺纹预紧， 上述这两种结构体积大、耗工时和 材料多。现有一种单行星滚柱丝杠副螺母， 是轴向剖开中间夹垫片， 用磨配垫片 来调整预紧力， 这种结构耗工时多。
发明内容
[0003] 本发明的目的是提供一种新型行星滚柱丝副， 它能避免现有行星滚柱丝 杠副螺母预紧力调整结构的耗材、耗时多的问题，具有摩擦小、效率高、寿命长、 承载能力大等特点。
[0004] 为了解决背景技术所存在的问题， 本发明是采用以下技术方案： 一种新 型行星滚柱丝杠副， 它包括多头螺纹丝杠、 螺母、 滚柱、 导环、 内齿圈， 所述螺 母沿所述多头螺纹丝杠轴线方向分成半螺母 A和半螺母 B。
[0005] 作为改进， 所述半螺母 A或半螺母 B上设有调节螺孔， 所述调节螺孔内 设有紧定螺钉。
[0006] 作为改进， 所述半螺母 A和半螺母 B之间螺钉连接。
[0007] 作为改进， 所述半螺母 A和半螺母 B之间设有定位孔， 所述定位孔中设 有定位销。
[0008] 作为改进， 所述导环外侧设有孔用弹性挡圈。
[0009] 本发明具有以下有益效果： 与滚珠丝杠副相比行星滚柱丝杠副的滚道不 受钢球的大小和导程大小的限制， 可加工出超小螺距的滚道， 使滚柱在轴向方向 上与丝杠的接触点大大增加， 因此承载能力和刚度比同规格丝杠副大。行星轮系 结构使行星滚柱丝杠副具有很大的传动速比， 而不受循环装置的限制。行星滚柱 与丝杠、 螺母的接触半径增大， 且所有的滚柱同时参与承载， 因此行星滚柱抗磨 损性能增强，提高了行星滚柱丝杠副的精度保持性。行星轮系结构使滑动摩擦转 换为滚动摩擦， 与传统的普通梯形丝杠相比， 能高效实现回转运动与直线运动的 相互转化。 具有易于安装和维护等特点， 在国内外被广泛用于精密仪器、数控机 床、 医疗器械的制造和航空航天、 冶金、 矿山等加工中心场合。
附图说明
[0010] 图 1为本发明的结构示意图。
[0011] 图 2为图 1中 C-C向剖视图。
[0012] 图 3为图 1中 D-D向剖视图。
[0013] 图 4为图 1中 E-E向剖视图。
具体实施方式
[0014] 参照图 1、 图 2、 图 3、 图 4， 本具体实施方式采用以下技术方案： 一种 新型行星滚柱丝杠副， 它包括多头螺纹丝杠 1、螺母、滚柱 4、导环 2、 内齿圈 3， 所述螺母沿所述多头螺纹丝杠 1轴线方向分成半螺母 A6和半螺母 B7。
[0015] 参照图 3， 所述半螺母 A6或半螺母 B7上设有调节螺孔 11， 所述调节螺 孔 11内设有紧定螺钉 9， 通过调节紧定螺钉 9可以调整半螺母 A6与半螺母 B7 之间的预紧力。
[0016] 参照图 2， 所述半螺母 A6和半螺母 B7之间螺钉 8连接， 通过螺钉 8将 半螺母 A6与半螺母 B7连为一体。
[0017] 参照图 4， 所述半螺母 A6和半螺母 B7之间设有定位孔 12， 所述定位孔 12中设有定位销 10， 通过定位销 10可以将半螺母 A6与半螺母 B7定位。
[0018] 参照图 1， 所述导环 2外侧设有孔用弹性挡圈 5， 通过孔用弹性挡圈 5增 强滚柱 4与导环 2的坚固性和密封性， 结构紧凑。
[0019] 参照图 1、 图 2、 图 3、 图 4， 本具体实施方式的运动原理： 多头螺纹丝 杠 1视为太阳轮， 螺母视为中心轮， 4滚柱视为行星轮， 当多头螺纹丝杠 1旋转 且螺母的旋转自由度限定后，滚柱 4在圆周方向做类行星运动， 即滚柱 4既作自 转运动又围绕多头螺纹丝杠 1作公转运动，同时滚柱 4通过螺旋传动将多头螺纹 丝杠 1的回转运动转换为螺母的直线往复运动。

Claims

权利要求书
1. 一种新型行星滚柱丝杠副， 它包括多头螺纹丝杠、 螺母、 滚柱、 导环、 内齿 圈， 其特征在于， 所述螺母沿所述多头螺纹丝杠轴线方向分成半螺母 A和半螺 母
2. 根据权利要求 1所述一种新型行星滚柱丝杠副， 其特征在于， 所述半螺母 A 或半螺母 B上设有调节螺孔， 所述调节螺孔内设有紧定螺钉。
3. 根据权利要求 2所述一种新型行星滚柱丝杠副， 其特征在于， 所述半螺母 A 和半螺母 B之间螺钉连接。
4. 根据权利要求 3所述一种新型行星滚柱丝杠副， 其特征在于， 所述半螺母 A 和半螺母 B之间设有定位孔， 所述定位孔中设有定位销。
5. 根据权利要求 4所述一种新型行星滚柱丝杠副， 其特征在于， 所述导环外侧 设有孔用弹性挡圈。
PCT/CN2012/087047 2012-06-20 2012-12-20 一种新型行星滚柱丝杠副 WO2013189161A1 (zh)

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CN102705465A (zh) * 2012-06-20 2012-10-03 江苏品德机电科技有限公司 一种新型行星滚柱丝杠副
FR3017678B1 (fr) * 2014-02-14 2016-03-04 Skf Ab Vis a rouleaux, procede et outil de montage des rouleaux dans une telle vis a rouleaux
FR3017679B1 (fr) * 2014-02-14 2016-03-04 Skf Ab Vis a rouleaux, procede et outil de montage des rouleaux dans une telle vis a rouleaux
CN108098558B (zh) * 2017-12-17 2024-03-26 吉林百合口腔医院股份有限公司 一种义齿抛光机
CN110107664B (zh) * 2018-12-05 2022-03-01 哈尔滨工业大学 一种大长径比螺母反向式行星滚柱丝杠
CN109630635A (zh) * 2019-01-21 2019-04-16 洛阳德美机械有限公司 一种行星滚柱丝杠传动***
CN110486433B (zh) * 2019-07-18 2021-03-26 北京精密机电控制设备研究所 一种螺母可分离式行星滚柱丝杠副
CN114623185A (zh) * 2022-03-22 2022-06-14 重庆渝安智能悬架有限公司 可调节型减震器端盖

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