JP2010151168A - Ball external circulation type ball screw - Google Patents

Ball external circulation type ball screw Download PDF

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Publication number
JP2010151168A
JP2010151168A JP2008327546A JP2008327546A JP2010151168A JP 2010151168 A JP2010151168 A JP 2010151168A JP 2008327546 A JP2008327546 A JP 2008327546A JP 2008327546 A JP2008327546 A JP 2008327546A JP 2010151168 A JP2010151168 A JP 2010151168A
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screw shaft
nut
ball
circulator
screw
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JP2008327546A
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JP4861395B2 (en
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Yan-Yu Chen
▲彦▼羽 陳
Yu-San Lee
玉山 李
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Hiwin Technologies Corp
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Hiwin Technologies Corp
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    • 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
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
    • F16H25/2214—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with elements for guiding the circulating balls

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ball external circulation type ball screw preventing rolling elements from directly colliding against a curved portion of an advancing opening of a circulation path and extending the life of the ball screw even longer than a conventional ball screw. <P>SOLUTION: The ball external circulation type ball screw includes a screw shaft, a nut, a circulation element 40, the circulation path 50 and the plurality of rolling elements. The screw shaft is formed with a rolling groove in a peripheral surface in an open manner. The nut is formed with a through hole for insertion of the screw shaft in its center in an open manner and a rolling groove is formed in a peripheral surface of the through hole. In the circulation element, opposite ends are respectively a first leg 43 and a second leg 44, the first leg 43 and the second leg 44 are provided on the nut and a connection part 45 is provided between them. The circulation path 50 is provided inside the circulation element, passes through the first leg 43, connection part 45 and second leg 44, communicates with a load path and has an advancing step 51, a first curved step 52, a second curved step 53 and a connection step 54. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ボールねじに係り、特にボール外部循環式ボールねじに関するものである。 The present invention relates to a ball screw, and more particularly to a ball external circulation ball screw.

目下、ボールねじは各種類の工作機械（例えば、フライス盤の工作テーブル、研磨盤の工作テーブル、旋盤の工作テーブルやボール盤の工作テーブルなど）に使用されており、上下左右に移動可能であることが必要であるため、工作機械の工作テーブルはボールねじを利用する。転がり子の流動方向により、ボールねじは、ボール内部循環式ボールねじと、ボール外部循環式ボールねじと、に分けられ、なお、本発明はボール外部循環式ボールねじに関するものである。ボール外部循環式ボールねじは、転がり子の回流がボールねじの外部で完成するものである。 Currently, ball screws are used in various types of machine tools (for example, milling machine table, polishing machine table, lathe machine table, drilling machine table, etc.) and can be moved vertically and horizontally Because it is necessary, the machine table of the machine tool uses a ball screw. The ball screw is classified into a ball internal circulation type ball screw and a ball external circulation type ball screw according to the flow direction of the rolling elements, and the present invention relates to a ball external circulation type ball screw. The ball external circulation type ball screw is one in which the rotation of the rolling element is completed outside the ball screw.

例えば米国特許第3,143,896号公報は、図１に示すように、循環子１１が二つの脚部１１１を介してナット１２内に組み付けられており、その循環経路１１２が負荷経路１２１と連通しており、転がり子１３が前記循環経路１１２と負荷経路１２１とを通過可能であり、しかし、循環経路１１２がねじ軸１４の軸方向と垂直するので、循環経路１１２の進出口の曲がり箇所１１３では、転がり子１３が衝突し易く、そうすると、騒音が発生し、循環子１１の寿命が短くなるという欠点があった。 For example, in US Pat. No. 3,143,896, as shown in FIG. 1, the circulator 11 is assembled in the nut 12 via two legs 111, and the circulation path 112 communicates with the load path 121. The rolling element 13 can pass through the circulation path 112 and the load path 121, but the circulation path 112 is perpendicular to the axial direction of the screw shaft 14. The child 13 easily collides, so that noise is generated and the life of the circulator 11 is shortened.

また、例えば米国特許第7,040,189号公報は、図２に示すように、循環経路１５１がねじ軸（図示せず）の軸方向と垂直するので、循環経路１５１の進出口の曲がり箇所１５２では、転がり子１３に衝突されて欠陥が発生し、また、循環子１５は、左右のピースを結合してナット（図示せず）に組付けられ、循環子１５の循環経路１５１の進出口の曲がり箇所１５２では衝撃点があるので、循環子１５が衝撃されて離間することを防止するために、補強構造を別に設けることが必要であるが、生産コストが増加する欠点があった。
米国特許第3,143,896号公報 米国特許第7,040,189号公報 Further, for example, in US Pat. No. 7,040,189, as shown in FIG. 2, since the circulation path 151 is perpendicular to the axial direction of the screw shaft (not shown), rolling occurs at the bent portion 152 of the exit / exit of the circulation path 151. The rotor 13 collides with the child 13 to cause a defect, and the circulator 15 is assembled to a nut (not shown) by joining the left and right pieces, and the bent portion 152 of the outlet of the circulation path 151 of the circulator 15 is formed. Then, since there is an impact point, in order to prevent the circulator 15 from being separated due to impact, it is necessary to provide a separate reinforcing structure, but there is a disadvantage that the production cost increases.
U.S. Pat.No. 3,143,896 U.S. Pat.No. 7,040,189

そこで、本発明の主な目的は、組み付けられた循環経路がねじ軸の軸方向と垂直しないようにすることにより、転がり子が循環経路の進出口の曲がり箇所に直接衝突しなくなるボール外部循環式ボールねじを提供することにある。 Therefore, the main object of the present invention is to prevent the ball from circulating directly into the bent portion of the exit of the circulation path by preventing the assembled circulation path from being perpendicular to the axial direction of the screw shaft. It is to provide a ball screw.

本発明の次の目的は、合せラインが循環経路の輪郭ラインに沿い、上下に設けられた、内蓋と、外蓋と、によって循環子を構成することにより、転がり子が循環経路の曲がり箇所に直接衝突しなくなるボール外部循環式ボールねじを提供することにある。 Another object of the present invention is to form a circulator by an inner lid and an outer lid, which are provided at the top and bottom along the contour line of the circulation path, so that the rolling element is bent at the circulation path. It is an object of the present invention to provide an external circulation ball screw that does not directly collide with the ball.

上記課題を解決するために、本発明の請求項１に記載のボール外部循環式ボールねじによると、ねじ軸と、ナットと、循環子と、循環経路と、複数の転がり子と、を含むボール外部循環式ボールねじにおいて、前記ねじ軸は、周面には転がり溝が開設されており、前記ナットは、その中心には前記ねじ軸を挿通するための貫通孔が開設されており、前記貫通孔の周面には転がり溝が開設されており、前記ねじ軸の転がり溝と前記ナットの転がり溝とから負荷経路が形成され、前記循環子は、両端がそれぞれ第一脚部と第二脚部とであり、前記第一脚部と前記第二脚部とは、前記ナットに設けられており、その間には連接部が設けられており、前記循環経路は、前記循環子の内部に設けられており、前記第一脚部と前記連接部と前記第二脚部とを貫通しており、前記負荷経路と連通しており、前記循環経路の両端は、進出段と、前記進出段と連続している第一曲がり段と、前記第一曲がり段と連続している第二曲がり段と、前記第二曲がり段の間に設けられた連接段と、を有し、前記ねじ軸の軸方向から見れば、前記第一曲がり段が直線を呈し、前記ねじ軸の径方向から見れば、前記第二曲がり段が半円曲線を呈し、前記複数の転がり子は、前記負荷経路と前記循環経路とを転がり可能であることを特徴とするボール外部循環式ボールねじである。 In order to solve the above problems, according to the ball external circulation type ball screw according to claim 1 of the present invention, a ball including a screw shaft, a nut, a circulator, a circulation path, and a plurality of rolling elements. In the external circulation type ball screw, the screw shaft is provided with a rolling groove on the peripheral surface, and the nut is provided with a through-hole through which the screw shaft is inserted at the center thereof. A rolling groove is formed in the peripheral surface of the hole, and a load path is formed from the rolling groove of the screw shaft and the rolling groove of the nut, and both ends of the circulator are a first leg and a second leg, respectively. The first leg and the second leg are provided on the nut, and a connecting part is provided between them, and the circulation path is provided inside the circulator. The first leg, the connecting part, and the second leg. Penetrating and communicating with the load path, and both ends of the circulation path are an advancing stage, a first bending stage continuous with the advancing stage, and a first bending stage continuous with the first bending stage. A second bending step, and a connecting step provided between the second bending steps, and when viewed from the axial direction of the screw shaft, the first bending step exhibits a straight line, and the radial direction of the screw shaft As seen from the above, the second bending stage has a semicircular curve, and the plurality of rolling elements can roll between the load path and the circulation path.

本発明の請求項２に記載のボール外部循環式ボールねじによると、前記ねじ軸の軸方向から見れば、前記第一曲がり段が曲線を呈し、前記ねじ軸の径方向から見れば、前記第二曲がり段が半円曲線を呈する。 According to the ball external circulation type ball screw according to claim 2 of the present invention, when viewed from the axial direction of the screw shaft, the first bending step exhibits a curve, and when viewed from the radial direction of the screw shaft, the first Two bends have a semicircular curve.

本発明の請求項３に記載のボール外部循環式ボールねじによると、前記ナットの外周面には切り面が設けられており、前記ナットに前記循環子を組合せた後、前記連接部は、大部分が前記切り面の一側に位置しており、一部が前記切り面の他側に位置している。 According to the ball external circulation type ball screw according to claim 3 of the present invention, a cut surface is provided on the outer peripheral surface of the nut, and after the circulating element is combined with the nut, the connecting portion is large. The part is located on one side of the cut surface, and a part is located on the other side of the cut surface.

本発明の請求項４に記載のボール外部循環式ボールねじによると、前記循環子は、内蓋と、外蓋と、から構成され、前記ねじ軸の軸方向から見れば、前記内蓋と前記外蓋とはそれぞれ上下に位置している。 According to the ball external circulation type ball screw according to claim 4 of the present invention, the circulator is composed of an inner lid and an outer lid, and when viewed from the axial direction of the screw shaft, the inner lid and the outer lid The outer lid is positioned above and below.

本発明の請求項５に記載のボール外部循環式ボールねじによると、前記循環子の前記内蓋と前記外蓋とは樹脂で作製されたものである。 According to the ball external circulation type ball screw according to claim 5 of the present invention, the inner lid and the outer lid of the circulator are made of resin.

本発明のボール外部循環式ボールねじによれば、次のような効果がある。
（１）循環経路の曲がり箇所を第一曲がり段と第二曲がり段とに設計され、ねじ軸の軸方向から見れば、第一曲がり段が曲線を呈し、ねじ軸の径方向から見れば、第二曲がり段が半円曲線を呈するようにすることにより、組み付けられた循環子の循環経路の進行方向がねじ軸の軸方向と垂直しないので、進行している転がり子が循環経路の進出口の曲がり箇所に直接衝突しなくなり、騒音が低減され、循環子の寿命が従来のものよりも更に長く延びる。 The ball external circulation type ball screw of the present invention has the following effects.
(1) The bent portion of the circulation path is designed as a first bent step and a second bent step, and when viewed from the axial direction of the screw shaft, the first bent step exhibits a curve, and when viewed from the radial direction of the screw shaft, By making the second bending step exhibit a semicircular curve, the traveling direction of the circulation path of the assembled circulator is not perpendicular to the axial direction of the screw shaft. No longer directly colliding with the bent portion of the coil, noise is reduced, and the life of the circulator is extended longer than the conventional one.

（２）合せラインが循環経路の輪郭ラインに沿い、上下に設けられた、内蓋と、外蓋と、によって循環子を構成することにより、転がり子が循環経路の曲がり箇所に直接衝突しなくなり、循環子が衝撃されて離間することがなくなる。 (2) By forming the circulator by the inner lid and the outer lid, which are provided on the upper and lower sides along the contour line of the circulation path, the rolling element does not directly collide with the bent part of the circulation path. The circulator will not be separated by being impacted.

以下、添付図面を参照して本発明の好適な実施の形態を詳細に説明する。
まず、図３乃至図６を参照する。本発明の実施例に係るボール外部循環式ボールねじは、ねじ軸２０と、ナット３０と、三つの循環子４０と、三つの循環経路５０と、複数の転がり子と、から構成される。 Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
First, reference will be made to FIGS. The ball external circulation type ball screw according to the embodiment of the present invention includes a screw shaft 20, a nut 30, three circulation elements 40, three circulation paths 50, and a plurality of rolling elements.

ねじ軸２０は、周面には転がり溝２１が開設されている。 The screw shaft 20 is provided with a rolling groove 21 on the circumferential surface.

ナット３０は、その中心にはねじ軸２０を挿通するための貫通孔３１が開設されており、貫通孔３１の周面には転がり溝（図示せず）が開設されており、ねじ軸の転がり溝２１とナットの前記転がり溝とから負荷経路（図示せず）が形成される。また、ナット３０の外周面には切り面３２が設けられている。 The nut 30 has a through-hole 31 through which the screw shaft 20 is inserted, and a rolling groove (not shown) is formed in the peripheral surface of the through-hole 31 to roll the screw shaft. A load path (not shown) is formed from the groove 21 and the rolling groove of the nut. A cut surface 32 is provided on the outer peripheral surface of the nut 30.

三つの循環子４０は、構造が同様であり、内蓋４１と、外蓋４２と、から構成され、内蓋４２と外蓋４１とは樹脂で作製されたものであり、外蓋４１の両側の側面には互いに対応するラグ４１１が設けられており、ラグ４１１がねじＣを介してナット３０に固定されている。各循環子４０は、両端がそれぞれ第一脚部４３と第二脚部４４とであり、第一脚部４３と第二脚部４４とは、ナット３０の切り面３２に設けられており、その間には連接部４５が設けられており、連接部４５は、大部分が切り面３２の一側に位置しており、一部が切り面３２の他側に位置しており、ねじ軸２０の軸方向Ａから見れば、内蓋４２と外蓋４１とはそれぞれ上下に位置されている。 The three circulators 40 have the same structure and are composed of an inner lid 41 and an outer lid 42, and the inner lid 42 and the outer lid 41 are made of resin. Lugs 411 corresponding to each other are provided on the side surfaces of the, and the lugs 411 are fixed to the nut 30 via screws C. Each circulator 40 has a first leg 43 and a second leg 44 at both ends, and the first leg 43 and the second leg 44 are provided on the cut surface 32 of the nut 30. In the meantime, a connecting portion 45 is provided, and most of the connecting portion 45 is located on one side of the cut surface 32, and a part thereof is located on the other side of the cut surface 32. When viewed from the axial direction A, the inner lid 42 and the outer lid 41 are positioned vertically.

三つの循環経路５０は、図７乃至図９に示すように、それぞれ三つの循環子４０の内部に設けられており、第一脚部４３と連接部４５と第二脚部４４とを貫通しており、前記負荷経路と連通しており、循環経路５０の両端は、進出段５１と、進出段５１と連続している第一曲がり段５２と、第一曲がり段５２と連続している第二曲がり段５３と、第二曲がり段５３の間に設けられた連接段５４と、を有し、ねじ軸２０の軸方向Ａから見れば、直線を呈する進出段５１が第一曲がり段５２と同じ平面に位置しており、なお、ねじ軸２０の軸方向Ａから見れば、第一曲がり段５２が直線を呈し、なお、ねじ軸２０の径方向Ｂから見れば、第一曲がり段５２が曲線を呈し、ねじ軸２０の径方向Ｂから見れば、第二曲がり段５３が半円曲線を呈し、なお、ねじ軸２０の軸方向Ａから見れば、第二曲がり段５３も半円曲線を呈する。 As shown in FIGS. 7 to 9, the three circulation paths 50 are respectively provided in the three circulators 40, and pass through the first leg portion 43, the connecting portion 45, and the second leg portion 44. The both ends of the circulation path 50 are connected to the advancing stage 51, the first bending stage 52 that is continuous with the advancing stage 51, and the first bending stage 52 that is continuous with the first bending stage 52. When viewed from the axial direction A of the screw shaft 20, the advancing step 51 having a straight line has a second bending step 53 and a connecting step 54 provided between the second bending step 53 and the first bending step 52. The first bending step 52 has a straight line when viewed from the axial direction A of the screw shaft 20 and the first bending step 52 is viewed from the radial direction B of the screw shaft 20. If it shows a curve and it sees from the radial direction B of the screw shaft 20, the 2nd bending step 53 will show a semicircle curve, , When viewed from the axial direction A of the screw shaft 20, also the second bending stage 53 exhibits a semi-circular curve.

複数の転がり子（図示せず）は、前記負荷経路と循環経路５０とを転がり可能である。 A plurality of rolling elements (not shown) can roll the load path and the circulation path 50.

従来の循環子付きボールねじ（米国特許第3,143,896号のうちの一つ）の使用状態を示す模式図である。It is a schematic diagram which shows the use condition of the conventional ball screw with a circulator (one of US Patent 3,143,896). 従来の循環子付きボールねじ（米国特許第7,040,189号のうちの一つ）の使用状態を示す模式図である。It is a schematic diagram which shows the use condition of the conventional ball screw with a circulator (one of US Patent 7,040,189). 本発明に係るボール外部循環式ボールねじの組合状態の斜視図である。It is a perspective view of the combination state of the ball external circulation type ball screw concerning the present invention. 本発明に係るボール外部循環式ボールねじの組合状態の平面図である。It is a top view of the combined state of the ball external circulation type ball screw concerning the present invention. 本発明に係る循環子の分解斜視図である。It is a disassembled perspective view of the circulator based on this invention. 本発明に係る循環子の組合状態の斜視図である。It is a perspective view of the combined state of the circulation child concerning the present invention. ねじ軸の軸方向から見た本発明に係る循環経路の模式図である。It is the schematic diagram of the circulation path which concerns on this invention seen from the axial direction of the screw shaft. ねじ軸の径方向から見た本発明に係る循環経路の模式図である。It is a schematic diagram of the circulation path which concerns on this invention seen from the radial direction of the screw shaft. 図７の上から見た本発明に係る循環経路の模式図である。It is the schematic diagram of the circulation path | route which concerns on this invention seen from the top of FIG.

符号の説明Explanation of symbols

１１ 循環子
１２ ナット
１３ 転がり子
１４ ねじ軸
１５ 循環子
２０ ねじ軸
２１ 転がり溝
３０ ナット
３１ 貫通孔
３２ 切り面
４０ 循環子
４１ 外蓋
４２ 内蓋
４３ 第一脚部
４４ 第二脚部
４５ 連接部
５０ 循環経路
５１ 進出段
５２ 第一曲がり段
５３ 第二曲がり段
５４ 連続段
１１１ 脚部
１１２ 循環経路
１１３ 曲がり箇所
１２１ 負荷経路
１５１ 循環経路
１５２ 曲がり箇所
Ａ 軸方向
Ｂ 径方向
Ｃ ねじ DESCRIPTION OF SYMBOLS 11 Circulator 12 Nut 13 Roller 14 Screw shaft 15 Circulator 20 Screw shaft 21 Rolling groove 30 Nut 31 Through-hole 32 Cut surface 40 Circulator 41 Outer lid 42 Inner lid 43 First leg 44 Second leg 45 Connecting part 50 Circulation path 51 Advance stage 52 First bend stage 53 Second bend stage 54 Continuous stage 111 Leg 112 Circulation path 113 Bend part 121 Load path 151 Circulation path 152 Bend part A Axial direction B Radial direction C Screw

Claims (5)

ねじ軸と、ナットと、循環子と、循環経路と、複数の転がり子と、を含むボール外部循環式ボールねじにおいて、
前記ねじ軸は、周面には転がり溝が開設されており、
前記ナットは、その中心には前記ねじ軸を挿通するための貫通孔が開設されており、前記貫通孔の周面には転がり溝が開設されており、前記ねじ軸の転がり溝と前記ナットの転がり溝とから負荷経路が形成され、
前記循環子は、両端がそれぞれ第一脚部と第二脚部とであり、前記第一脚部と前記第二脚部とは、前記ナットに設けられており、その間には連接部が設けられており、
前記循環経路は、前記循環子の内部に設けられており、前記第一脚部と前記連接部と前記第二脚部とを貫通しており、前記負荷経路と連通しており、前記循環経路の両端は、進出段と、前記進出段と連続している第一曲がり段と、前記第一曲がり段と連続している第二曲がり段と、前記第二曲がり段の間に設けられた連接段と、を有し、前記ねじ軸の軸方向から見れば、前記第一曲がり段が直線を呈し、前記ねじ軸の径方向から見れば、前記第二曲がり段が半円曲線を呈し、
前記複数の転がり子は、前記負荷経路と前記循環経路とを転がり可能であることを特徴とする、ボール外部循環式ボールねじ。 In a ball external circulation type ball screw including a screw shaft, a nut, a circulator, a circulation path, and a plurality of rolling elements,
The screw shaft has a rolling groove on its peripheral surface,
The nut has a through-hole for inserting the screw shaft in the center thereof, and a rolling groove is formed in a peripheral surface of the through-hole, and the rolling groove of the screw shaft and the nut A load path is formed from the rolling groove,
Both ends of the circulator are respectively a first leg portion and a second leg portion, and the first leg portion and the second leg portion are provided on the nut, and a connecting portion is provided therebetween. And
The circulation path is provided inside the circulator, passes through the first leg portion, the connection portion, and the second leg portion, communicates with the load path, and the circulation path. The two ends of the joint are provided between an advancing stage, a first bent stage continuous with the advanced stage, a second bent stage continuous with the first bent stage, and the second bent stage. And when viewed from the axial direction of the screw shaft, the first bending step exhibits a straight line, and when viewed from the radial direction of the screw shaft, the second bending step exhibits a semicircular curve,
The ball external circulation type ball screw, wherein the plurality of rolling elements can roll between the load path and the circulation path. 前記ねじ軸の軸方向から見れば、前記第一曲がり段が曲線を呈し、前記ねじ軸の径方向から見れば、前記第二曲がり段が半円曲線を呈することを特徴とする、請求項１に記載のボール外部循環式ボールねじ。 The first bending step exhibits a curve when viewed from the axial direction of the screw shaft, and the second bending step exhibits a semicircular curve when viewed from the radial direction of the screw shaft. Ball external circulation type ball screw described in 1. 前記ナットの外周面には切り面が設けられており、前記ナットに前記循環子を組合せた後、前記連接部は、大部分が前記切り面の一側に位置しており、一部が前記切り面の他側に位置していることを特徴とする、請求項１に記載のボール外部循環式ボールねじ。 A cut surface is provided on the outer peripheral surface of the nut, and after the circulator is combined with the nut, the connecting portion is mostly located on one side of the cut surface, and a part thereof The ball external circulation type ball screw according to claim 1, wherein the ball external circulation type ball screw is located on the other side of the cut surface. 前記循環子は、内蓋と、外蓋と、から構成され、前記ねじ軸の軸方向から見れば、前記内蓋と前記外蓋とはそれぞれ上下に位置していることを特徴とする、請求項１に記載のボール外部循環式ボールねじ。 The circulator is composed of an inner lid and an outer lid, and the inner lid and the outer lid are respectively positioned vertically when viewed from the axial direction of the screw shaft. Item 2. The ball external circulation type ball screw according to Item 1. 前記循環子の前記内蓋と前記外蓋とは樹脂で作製されたことを特徴とする、請求項４に記載のボール外部循環式ボールねじ。 The ball external circulation type ball screw according to claim 4, wherein the inner lid and the outer lid of the circulator are made of resin.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077247A1 (en) * 2010-12-08 2012-06-14 日本精工株式会社 Ball screw device
CN110375048A (en) * 2019-08-06 2019-10-25 深圳市威远精密技术有限公司 A kind of embedded interior circulation ball nut

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Publication number Priority date Publication date Assignee Title
JP5818925B2 (en) 2014-02-13 2015-11-18 Thk株式会社 Ball screw device

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JPH1151049A (en) * 1997-07-31 1999-02-23 Thk Kk Tube type ball screw device
JP2006125578A (en) * 2004-10-29 2006-05-18 Nsk Ltd Ball screw
JP2008202669A (en) * 2007-02-19 2008-09-04 Thk Co Ltd Screw device series and screw device

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JPH1151049A (en) * 1997-07-31 1999-02-23 Thk Kk Tube type ball screw device
JP2006125578A (en) * 2004-10-29 2006-05-18 Nsk Ltd Ball screw
JP2008202669A (en) * 2007-02-19 2008-09-04 Thk Co Ltd Screw device series and screw device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077247A1 (en) * 2010-12-08 2012-06-14 日本精工株式会社 Ball screw device
JP5500268B2 (en) * 2010-12-08 2014-05-21 日本精工株式会社 Ball screw device
US9003911B2 (en) 2010-12-08 2015-04-14 Nsk Ltd. Ball screw device
CN110375048A (en) * 2019-08-06 2019-10-25 深圳市威远精密技术有限公司 A kind of embedded interior circulation ball nut

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