JP4619277B2 - 駒式ボールねじ - Google Patents
駒式ボールねじ Download PDFInfo
- Publication number
- JP4619277B2 JP4619277B2 JP2005339737A JP2005339737A JP4619277B2 JP 4619277 B2 JP4619277 B2 JP 4619277B2 JP 2005339737 A JP2005339737 A JP 2005339737A JP 2005339737 A JP2005339737 A JP 2005339737A JP 4619277 B2 JP4619277 B2 JP 4619277B2
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- JP
- Japan
- Prior art keywords
- piece
- nut
- piece member
- screw
- window
- Prior art date
- Legal status (The legal status 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 status listed.)
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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
- F16H25/2204—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
- F16H25/2223—Cross over deflectors between adjacent thread turns, e.g. S-form deflectors connecting neighbouring threads
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Description
図1は、本発明に係る駒式ボールねじの一実施形態を示し、(a)は平面図、(b)は縦断面図である。また、図2(a)はナットの断面斜視図、(b)は横断面図、図3(a)は駒部材を示す斜視図、(b)は平面図、図4(a)〜(c)は、駒部材の組立手順を示す説明図である。
2・・・・・・・・・・ねじ軸
2a、3a・・・・・・ねじ溝
3・・・・・・・・・・ナット
4・・・・・・・・・・ボール
5・・・・・・・・・・駒部材
5a・・・・・・・・・連結溝
6・・・・・・・・・・駒窓
7・・・・・・・・・・駒窓縁
8・・・・・・・・・・窓駒窓縁部
9・・・・・・・・・・アーム
10・・・・・・・・・凹み部
11・・・・・・・・・ガイド壁
12・・・・・・・・・加締部
50、70・・・・・・駒式ボールねじ
51・・・・・・・・・ねじ軸
52、54、71a・・ねじ溝
53、71・・・・・・ナット
55・・・・・・・・・ボール
56、72・・・・・・駒窓
57・・・・・・・・・駒部材
58・・・・・・・・・連結溝
59・・・・・・・・・第1の周方向溝
60・・・・・・・・・第2の周方向溝
61・・・・・・・・・止め輪
73・・・・・・・・・第1の駒部材
73a・・・・・・・・ヒレ
74・・・・・・・・・第2の駒部材
75・・・・・・・・・突条
76、77・・・・・・溝
Claims (3)
- 外周面に螺旋状のねじ溝が形成されたねじ軸と、
このねじ軸に外嵌され、内周面に螺旋状のねじ溝が形成されたナットと、
対向する両ねじ溝により形成される転動路に収容された複数のボールと、
前記ナットの胴部に穿設された駒窓に嵌合され、前記転動路を周回経路とする連結溝が形成された駒部材とを備えた駒式ボールねじにおいて、
前記駒窓が断面略円形に形成され、この駒窓に対応して前記駒部材がMIMによって焼結合金から断面円形に形成され、この駒部材の両側に丸棒状のアームが突設され、このアームが前記ナットのねじ溝に係合され、当該駒部材が前記ナットに位置決めされ、さらに前記駒部材の前記アームと同じ周方向両側縁に、当該アームと前記連結溝を覆う幅広で、外径側へ立ち上がるガイド壁が対向して設けられ、これらのガイド壁を前記駒窓の傾斜した縁部側に沿って塑性変形させて形成した加締部によって前記駒部材が前記ナットに固定されていることを特徴とする駒式ボールねじ。 - 前記駒部材のガイド壁が塑性変形可能で、かつ加締部強度が確保できる靭性を有し、熱処理によって少なくとも前記連結溝の表面硬さが30HRC以上に設定されている請求項1に記載のボールねじ。
- 前記駒部材が浸炭材で形成され、浸炭焼入れによって表面が硬化処理されると共に、前記ガイド壁が焼きなましによって表面硬さが15〜30HRCの範囲に設定されている請求項2に記載のボールねじ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005339737A JP4619277B2 (ja) | 2005-11-25 | 2005-11-25 | 駒式ボールねじ |
DE102006055300.4A DE102006055300B4 (de) | 2005-11-25 | 2006-11-23 | Kugelgewindespindel vom Deflektortyp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005339737A JP4619277B2 (ja) | 2005-11-25 | 2005-11-25 | 駒式ボールねじ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007146915A JP2007146915A (ja) | 2007-06-14 |
JP4619277B2 true JP4619277B2 (ja) | 2011-01-26 |
Family
ID=38208559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005339737A Active JP4619277B2 (ja) | 2005-11-25 | 2005-11-25 | 駒式ボールねじ |
Country Status (1)
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JP (1) | JP4619277B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010001970A (ja) | 2008-06-20 | 2010-01-07 | Ntn Corp | 駒式ボールねじ |
JP2010112429A (ja) * | 2008-11-05 | 2010-05-20 | Ntn Corp | 駒式ボールねじ |
JP6475566B2 (ja) | 2015-05-18 | 2019-02-27 | Ntn株式会社 | ボールねじ |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5077762A (ja) * | 1973-10-30 | 1975-06-25 | ||
JPH0640505U (ja) * | 1992-10-30 | 1994-05-31 | エヌティエヌ株式会社 | 内部循環式ボールねじ |
FR2703122A1 (fr) * | 1993-03-24 | 1994-09-30 | Transrol | Dispositif de recirculation des billes sur des systèmes vis-écrous à billes. |
JP2001003933A (ja) * | 1999-06-21 | 2001-01-09 | Koyo Seiko Co Ltd | 軸力管理方法およびこれによる軸受装置 |
JP2004084763A (ja) * | 2002-08-26 | 2004-03-18 | Ntn Corp | 駆動車輪用軸受 |
JP2005308141A (ja) * | 2004-04-23 | 2005-11-04 | Ntn Corp | ボールねじ |
-
2005
- 2005-11-25 JP JP2005339737A patent/JP4619277B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5077762A (ja) * | 1973-10-30 | 1975-06-25 | ||
JPH0640505U (ja) * | 1992-10-30 | 1994-05-31 | エヌティエヌ株式会社 | 内部循環式ボールねじ |
FR2703122A1 (fr) * | 1993-03-24 | 1994-09-30 | Transrol | Dispositif de recirculation des billes sur des systèmes vis-écrous à billes. |
JP2001003933A (ja) * | 1999-06-21 | 2001-01-09 | Koyo Seiko Co Ltd | 軸力管理方法およびこれによる軸受装置 |
JP2004084763A (ja) * | 2002-08-26 | 2004-03-18 | Ntn Corp | 駆動車輪用軸受 |
JP2005308141A (ja) * | 2004-04-23 | 2005-11-04 | Ntn Corp | ボールねじ |
Also Published As
Publication number | Publication date |
---|---|
JP2007146915A (ja) | 2007-06-14 |
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