WO1996012901A1 - Ball worm gear - Google Patents

Ball worm gear Download PDF

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Publication number
WO1996012901A1
WO1996012901A1 PCT/JP1995/000033 JP9500033W WO9612901A1 WO 1996012901 A1 WO1996012901 A1 WO 1996012901A1 JP 9500033 W JP9500033 W JP 9500033W WO 9612901 A1 WO9612901 A1 WO 9612901A1
Authority
WO
WIPO (PCT)
Prior art keywords
ball
worm
wheel
worm gear
gear
Prior art date
Application number
PCT/JP1995/000033
Other languages
French (fr)
Japanese (ja)
Inventor
Kazukimi Hiratsuka
Original Assignee
Kazukimi Hiratsuka
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
Publication date
Application filed by Kazukimi Hiratsuka filed Critical Kazukimi Hiratsuka
Priority to AU14252/95A priority Critical patent/AU1425295A/en
Publication of WO1996012901A1 publication Critical patent/WO1996012901A1/en

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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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
    • F16H1/163—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel with balls between the co-operating parts

Definitions

  • the present invention is to improve the power transmission efficiency, which is the biggest drawback of the conventional worm gear, to a level equal to that of a general gear, and to the level of a bearing.
  • worm gears have been generalized as gears with unique characteristics such as right-angle transmission of power, self-locking, and extinction ratio.
  • bevel gears are 1/2 or 1/3, planetary gears are 1/5 to 110, but worm gears are also 1/20 to 1Z100.
  • the transmission efficiency was as low as 40% to 50%, and was around 80% even for those with high processing accuracy. This is because, in principle, the power is transmitted by the component force due to the friction between the worm gear and the worm wheel, so the loss increases.
  • the casing prevents falling off, the shape of the worm gear is a drum shape, and the worm wound worm is a ball groove. Hit at the same time, strengthen the action.
  • the transmission efficiency was more than 90%, and a high-speed input of 50,000 r Pm or more, which was impossible, was made possible.
  • FIG. 1A is a cross-sectional view of a horizontal mechanism
  • FIG. 2 is a cross-sectional view of a vertical mechanism.
  • Reference numeral (1) indicates a drum-shaped ball groove worm gear
  • (2) indicates a ball wheel gear.
  • connection tt between (1) and (2) is important and requires the most skill.
  • the diameter is small at the center of (1) and large at both sides.
  • the contact speed with the ball is slow at the center and fast at the edges.
  • the pitch of the round groove is so steep at the center that it stands at both ends.
  • the pitch of the round groove is twisted with the rotation position of (1).
  • the ball and the wheel 6 in (2) have a clearance of about 0.01 mm, can rotate freely, and surround the ball so that the ball does not fly out. Is smaller than the diameter of the ball.
  • the ball on the wheel which does not come into contact with the worm, is also held freely by the casing with a fixed rotation in the wheel hole.
  • the difference between the ball screw and the ball screw is explained. If the ball screw rotates in the round groove of the screw, smooth movement and high efficiency can be obtained. In order for the ball to roll in both the round groove screw and the ball groove, the ball must be circulated inevitably.
  • the rotation axis and the movement direction axis are the same, and the rotation ratio is 1.
  • the bearing is a circular motion of the ball. Therefore, on the extension of this idea, there is no speed ratio or right angle transmission.
  • the ball worm gear is a fixed point rotation on the wheel side, and the bearing acts as a gear.
  • the ball and worm gear of the present invention can achieve high efficiency and high-speed rotation input of 500 rpm or more, which were impossible with the conventional worm and gear, and are compact.
  • a new range of applications was pioneered as a high-power tool. Improve efficiency as a speed reducer in the power field.

Landscapes

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

Abstract

An object of the present invention is to improve the efficiency of a worm gear mechanism, and in a worm gear mechanism comprising a worm and a wheel, the worm comprises a hand-drum like ball groove worm gear (1), while the wheel comprises a ball wheel gear (2) in which a ball is half embedded, whereby both the worm and the wheel are brought into mesh engagement with each other.

Description

明 細 書  Specification
ボール · ウォーム · ギヤ一 技術分野 Ball · Worm · Gear – Technical Field
この発明は、 従来のウォームギヤ一の最大の欠点であった動力伝達効率の悪 かった物を、 一般のギヤ一並以上の、 ベヤリング並に改善するものである。 背景技術  The present invention is to improve the power transmission efficiency, which is the biggest drawback of the conventional worm gear, to a level equal to that of a general gear, and to the level of a bearing. Background art
従来、 ウォームギヤは、 動力の直角伝達や、 セルフロック、 髙滅速比、 等の 他に無い特性のギヤ一として一般化している。  Conventionally, worm gears have been generalized as gears with unique characteristics such as right-angle transmission of power, self-locking, and extinction ratio.
一段の減速比については、 かさ歯車で 1/2とか 1/3、 遊星歯車で 1/5か ら 1 10なのに、 ウォームギヤ一では 1 /20から 1Z1 00もある。 Regarding the one-stage reduction ratio, bevel gears are 1/2 or 1/3, planetary gears are 1/5 to 110, but worm gears are also 1/20 to 1Z100.
しかしながら、 伝達効率は 40 %から 50 %と低く、 加工精度の高い物でも 80 %前後であった。 それは、 機構原理的に、 ウォームギヤ一とウォームホイ —ルとの摩擦による分力で動力伝達している為にロスが大きくなるわけである < 発明の開示 However, the transmission efficiency was as low as 40% to 50%, and was around 80% even for those with high processing accuracy. This is because, in principle, the power is transmitted by the component force due to the friction between the worm gear and the worm wheel, so the loss increases.
そこで、 この摩擦力を小さくする工夫として、 ころがリ摩擦にできないかと の発想から、 歯車そのものをベアリングにしてしまったのである。  In order to reduce this frictional force, the gears themselves were used as bearings, based on the idea that the rollers could re-friction.
ホイールギヤ一にあたる齒の代わりにボールを半分埋め込み， ケーシングで 脱落を防止し、 ウォームギヤ一の形状を鼓形で、 つる巻きウォームをボール溝 嫘旋とすると、 力の作用点がボールの数僑に同時に当り、 作用を強める。 If the ball is half-embedded instead of the tooth corresponding to the wheel gear, the casing prevents falling off, the shape of the worm gear is a drum shape, and the worm wound worm is a ball groove. Hit at the same time, strengthen the action.
このボール溝蝶旋とホイールに挟まれたボール = (ホイールに埋め込まれた ボール） は、 まさにボールベアリングであり、 そして、 同時にウォームギヤ一 である。 結果として、 伝達効率も 9 0 %以上となり、 不可能であった 5 0 0 0 r P m以上の高速入力が可能となった。 図面の簡単な説明 The ball between the ball groove spiral and the wheel = (the ball embedded in the wheel) is exactly a ball bearing, and at the same time, the worm gear It is. As a result, the transmission efficiency was more than 90%, and a high-speed input of 50,000 r Pm or more, which was impossible, was made possible. BRIEF DESCRIPTION OF THE FIGURES
第 1囡は、 横の機構断面図であり、 第 2図は、 縱の機構断面図である。 符号 （ 1 ) は鼓形ボール溝ウォームギヤ一であり、 （ 2 ) はボール ' ホイ— ル · ギヤ一である。 発明を実施するための最良の形態  FIG. 1A is a cross-sectional view of a horizontal mechanism, and FIG. 2 is a cross-sectional view of a vertical mechanism. Reference numeral (1) indicates a drum-shaped ball groove worm gear, and (2) indicates a ball wheel gear. BEST MODE FOR CARRYING OUT THE INVENTION
本発明をよ り詳細に説述するために， 貼付の図面に従ってこれを説明する。  In order to explain the present invention in more detail, this will be described with reference to the attached drawings.
( 1 ) と （ 2 ) の接 tt部分が重要で最も技術を要する。 The connection tt between (1) and (2) is important and requires the most skill.
それは、 ホイール円周上に等分に配列して、 半埋め込みされたボールに対して ( 1 ) の全ての丸溝が常に同時に接触させる必要がある。  It is necessary that all the round grooves of (1) always contact the semi-embedded ball at the same time, evenly arranged on the wheel circumference.
( 1 ) の中央部では、 直径が小さく、 両サイ ドでは直径が大きくなる。  The diameter is small at the center of (1) and large at both sides.
従って、 ボールとの接触スピードは中央では遅く、 端では速くなる。  Therefore, the contact speed with the ball is slow at the center and fast at the edges.
すなわち、 丸溝のピッチは中央では煩斜が強く、 兩端では立ってくる様に In other words, the pitch of the round groove is so steep at the center that it stands at both ends.
( 1 ) の回転位置と共に丸溝ピッチがねじれてくる。 The pitch of the round groove is twisted with the rotation position of (1).
そして、 ボールと （ 2 ) のホイール六には 0. 0 1 mm程度のクリアランス があり、 自由回転ができて， しかもボールが飛び出さない様にボールを囲む 丸溝とホイ一ルとケ一シングとの隙間はボールの直径より小さい。  The ball and the wheel 6 in (2) have a clearance of about 0.01 mm, can rotate freely, and surround the ball so that the ball does not fly out. Is smaller than the diameter of the ball.
いつぼう、 ウォームと接触しない、 ホイール上のボールも、 ホイール穴で 定点回転で、 ケーシングによって自由保持される。 ここで、 類似と して、 連想されるであろう， ボールネジとの相違について 説明をするならば、 ボールネジは、 ネジの丸溝をボールが回転する事で スムースな移動と高い効率が得られるわけで、 ボールは丸溝ネジとボール溝の 双方を転がる為に、 必然的にボールの循環が必要となる。 The ball on the wheel, which does not come into contact with the worm, is also held freely by the casing with a fixed rotation in the wheel hole. Here, as an analogy, the difference between the ball screw and the ball screw is explained. If the ball screw rotates in the round groove of the screw, smooth movement and high efficiency can be obtained. In order for the ball to roll in both the round groove screw and the ball groove, the ball must be circulated inevitably.
回転軸と移動方向軸は同麴となり、 その回転比は 1である。 The rotation axis and the movement direction axis are the same, and the rotation ratio is 1.
ベアリングはボールの円運動である、 これを燦旋運動にしてネジの働きとした ものである。 したがって. この発想の延長上には、 滅速比も、 直角伝達も 存在しないのである。 The bearing is a circular motion of the ball. Therefore, on the extension of this idea, there is no speed ratio or right angle transmission.
ボール ' ウォーム · ギヤ一は、 ホイール側での定点回転であって、 ベアリング は歯車の役目をするのである。 産業上の利用可能性 The ball worm gear is a fixed point rotation on the wheel side, and the bearing acts as a gear. Industrial applicability
以上の様に、 本発明のボール · ウォーム . ギヤ一は、 従来のウォーム · ギヤ 一では不可能であった、 高効率と、 5 0 0 0 r p m以上の高速回転入力が可能 となり、 コンパク トで高出力のツールとして、 新しい応用範囲が開拓されたの である。 動力分野の滅速機として効率を改善する。  As described above, the ball and worm gear of the present invention can achieve high efficiency and high-speed rotation input of 500 rpm or more, which were impossible with the conventional worm and gear, and are compact. A new range of applications was pioneered as a high-power tool. Improve efficiency as a speed reducer in the power field.

Claims

請 求 の 範 囲 ホイールギヤの歯の代わりにベアリングのボールを半埋め込み. 鼓形ボール溝蟓旋のウォームと喰み合わせた機構。 Scope of request A semi-embedded bearing ball in place of the tooth of the wheel gear. A mechanism that engages with the worm of the hourglass ball groove.
PCT/JP1995/000033 1994-10-19 1995-01-11 Ball worm gear WO1996012901A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU14252/95A AU1425295A (en) 1994-10-19 1995-01-11 Ball worm gear

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6/14597U 1994-10-19
JP1459794 1994-10-19

Publications (1)

Publication Number Publication Date
WO1996012901A1 true WO1996012901A1 (en) 1996-05-02

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Application Number Title Priority Date Filing Date
PCT/JP1995/000033 WO1996012901A1 (en) 1994-10-19 1995-01-11 Ball worm gear

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AU (1) AU1425295A (en)
WO (1) WO1996012901A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346255A1 (en) * 2003-09-25 2005-04-28 Deutsch Zentr Luft & Raumfahrt Process for generating superheated steam, steam generation stage for a power plant and power plant
BE1016310A5 (en) * 2004-11-10 2006-07-04 Technologid Worm gear transmission, has worm gear mantle surface provided with sockets containing rotating balls
JP2013100906A (en) * 2006-01-26 2013-05-23 Spincontrol Gearing Llc Worm-gear assembly
CN112105840A (en) * 2018-05-10 2020-12-18 平行长鼓齿轮有限公司 Power transmission device
CN112628359A (en) * 2021-01-11 2021-04-09 郝子豪 Rolling worm gear power machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS643007Y2 (en) * 1982-09-24 1989-01-25
JPH05302649A (en) * 1992-04-28 1993-11-16 Kamo Seiko Kk Worm speed reducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS643007Y2 (en) * 1982-09-24 1989-01-25
JPH05302649A (en) * 1992-04-28 1993-11-16 Kamo Seiko Kk Worm speed reducer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346255A1 (en) * 2003-09-25 2005-04-28 Deutsch Zentr Luft & Raumfahrt Process for generating superheated steam, steam generation stage for a power plant and power plant
BE1016310A5 (en) * 2004-11-10 2006-07-04 Technologid Worm gear transmission, has worm gear mantle surface provided with sockets containing rotating balls
JP2013100906A (en) * 2006-01-26 2013-05-23 Spincontrol Gearing Llc Worm-gear assembly
US8950281B2 (en) 2006-01-26 2015-02-10 Spincontrol Gearing Llc Worm-gear assembly having a pin raceway
CN112105840A (en) * 2018-05-10 2020-12-18 平行长鼓齿轮有限公司 Power transmission device
CN112628359A (en) * 2021-01-11 2021-04-09 郝子豪 Rolling worm gear power machine

Also Published As

Publication number Publication date
AU1425295A (en) 1996-05-15

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