【発明の詳細な説明】〔産業上の利用分野）この発明は雄ねじに噛合う雌ねじの歯をピッチ相当の位
置に設け、且つ噛合う位置を調整して決定するようにし
たねじ装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a screw device in which the teeth of a female thread that mesh with a male thread are provided at positions corresponding to the pitch, and the meshing position is adjusted and determined.
雄ねじに係合して伝達する動力や移送する負荷の大小に
対応する歯の大きさと数を選定し、その選定した歯を単
数或いは複数有する雌ねじ板を一枚又は複数枚と前記雄
ねじとの何れか一方を移送すべき被移送体に取付けるよ
うにしたものである。The size and number of teeth corresponding to the magnitude of the power to be transmitted and the load to be transferred by engaging with the male thread are selected, and one or more female threaded plates having one or more of the selected teeth are combined with any of the above male threads. Either one is attached to the object to be transported.
更、に又、その雌ねじ板が雄ねじに対して放射状になる
ように被移送体を組立て、それをナツトとして使用する
ようにしたものである。何れの場合も複数の雌ねじ板を
組合せて用いる場合には、雌ねじ板を雄ねじのリードに
合せて順次ずらせるようにして取付けるか、雌ねじ板の
歯が雄ねじのリードに倣って順次異なる位置にあるよう
に構成して、その雌ねじ板を順次組合せて用いるように
する。Furthermore, the object to be transferred is assembled so that the female screw plate is radial with respect to the male screw, and the object is used as a nut. In any case, if multiple female thread plates are used in combination, the female thread plates should be installed so that they are shifted sequentially to match the lead of the male thread, or the teeth of the female thread plate should be installed at different positions in order to follow the lead of the male thread. The female screw plates are constructed in such a manner that the female screw plates are sequentially combined and used.
その隔離ねじ板の歯が雄ねじに当る面をそのリードに合
せて傾斜させ、雄ねじのリードが小さく、径が大きく、
リード角が小さいときには雄ねじに当る面をクラウニン
グしたもの、又、雌ねじ板の材質についても、合成樹脂
を含めた異なる材質のものを組合せて用いたり、或いは
気孔を有する焼結材で構成するようにし、その表面にＷ
Ｓ２、ＭＯ８ｚ等の固体潤滑剤を塗着するようにしたも
の、又、雄ねじや雌ねじ板を加工形成する前に、その素
材に予め焼入れ等の熱処理を施しておいて、それを放電
加工により加工形成し、その放電加工した面を再加工し
て表面を仕上げるとぎに、各ねじの当り面を第１加工し
たときに残っている放電痕の２０〜４０％を平滑化する
加工を行ない、低摩擦面を得るようにしたものを、昭和
６１年特許願第２２．６００号にて提示した。The surface where the teeth of the isolation screw plate contact the male screw is inclined to match the lead, so that the lead of the male screw is small and the diameter is large.
When the lead angle is small, the surface that contacts the male thread is crowned, and the female thread plate is made of a combination of different materials including synthetic resin, or is made of sintered material with pores. , W on its surface
The material is coated with a solid lubricant such as S2, MO8z, etc., or the material is subjected to heat treatment such as quenching before processing to form a male or female screw plate, and then processed by electrical discharge machining. After forming and finishing the surface by re-machining the electrical discharge machined surface, smoothing is performed to smooth 20 to 40% of the electrical discharge marks left when the contact surface of each screw was first machined. A friction surface was proposed in Patent Application No. 22.600 of 1988.
これにより伝達する動力や移送する負荷に適応した断面
積を有する板状の雌ねじ板の歯を、雄ねじの山に当てる
のであるから、雄ねじの全体に亘って両者の接触状態を
検査し確認をすることができ、その結果から雌ねじ板の
取付けを移動調整することができ、複数の雌ねじ板を用
いる場合には、その雌ねじ板を雄ねじの軸心と平行に互
いに反対方向に動かして、雄ねじの山の互いに反対側の
面を雌ねじ板の側面に当てて、ガタやバックラッシュを
取除くことができたが、板状の雄ねじ板によるために、
組立てや素材にグラファイト等が使用できない難点があ
った。As a result, the teeth of the female screw plate, which has a cross-sectional area suitable for the power to be transmitted and the load to be transferred, are brought into contact with the threads of the male screw, so it is necessary to inspect and confirm the state of contact between the two over the entire male screw. The installation of the female thread plate can be adjusted based on the results. When using multiple female thread plates, the female thread plates can be moved in opposite directions parallel to the axis of the male thread to adjust the threads of the male thread. It was possible to remove backlash and backlash by applying the opposite sides of the female screw plate to the sides of the female screw plate, but because the plate-shaped male screw plate was used,
It had the disadvantage of not being able to use graphite or other materials for assembly or materials.
しかして、この発明は雄ねじに噛合うナツトホルダの歯
を雄ねじの軸心に向う半径方向の位置調整と、テーバを
有する一対の櫟によって雄ねじの軸心方向に位置調整し
てナツトホルダに固定するようにした。この歯はグラフ
ァイト（含炭化物、炭素）で作り、雄ねじはマイクロ溶
接による表面層を有するようにしたものである。Therefore, the present invention involves adjusting the position of the teeth of the nut holder that mesh with the male screw in the radial direction toward the axial center of the male screw, and adjusting the position in the axial direction of the male screw using a pair of tapered rods to fix the nut holder to the nut holder. did. The teeth are made of graphite (carbide, carbon), and the external thread has a surface layer formed by micro-welding.
（作用〕′ナツトホルダにＮＣ（数値制御）装置で、雄ねじのビッ
ヂ相当の位置にあって、雄ねじの軸心方向にテーバを有
する孔を加工し、この孔に歯を挿入して、雄ねじのリー
ド面に当接してバックラッシュがないようにした後歯の
両側に櫟を挿入してナツトホルダと一体的に固着する。(Operation)' Use an NC (numerical control) device to machine a hole in the nut holder at a position corresponding to the bit of the male screw and having a taper in the axial direction of the male screw, insert teeth into this hole, and insert the lead of the male screw. The teeth are inserted into both sides of the rear teeth that come into contact with the surface to prevent backlash, and are fixed integrally with the nut holder.
そして、尚、歯とリード面との間に間隙ができたときに
は、−対の楔を半径方向に出入れして、歯を雄ねじの半
径方向に移動しながら、雄ねじの軸心方向に移動してバ
ックラッシュを除くようにしたものである。When a gap is created between the teeth and the lead surface, move the wedges in and out in the radial direction to move the teeth in the radial direction of the male thread and in the axial direction of the male thread. This is to eliminate backlash.
又歯を複数設けた場合は互いに反対方向の面を雄ねじの
リード面に当接してバックラッシュを除くようにしても
よい。しかして雄ねじのリード面にはマイクロ溶着によ
る表面層を設けて耐摩耗性を向上し、歯はグラファイト
にＴｉ Ｃ，Ｔｉ Ｎ、ＷＣを分散したものとか、多く
の炭化物をグラファイトに分散したもの、或いは部分的
に炭化物としたものを用いることによって摩擦係数が約
０．０５程度となり、吸油性が高く、バックラッシュに
よる誤差の全く無いねじ装置を得ることができた。In addition, when a plurality of teeth are provided, backlash may be eliminated by having surfaces in opposite directions abut against the lead surface of the male thread. Therefore, the lead surface of the male screw is provided with a surface layer by micro-welding to improve wear resistance, and the teeth are made of graphite with TiC, TiN, WC dispersed, or many carbides dispersed in graphite. Alternatively, by using a partially carbide material, the coefficient of friction becomes about 0.05, and a screw device with high oil absorption and no errors due to backlash can be obtained.
本発明を例示した図に基づいて説明する。The present invention will be explained based on the drawings that illustrate the invention.
雄ねじ１と、この雄ねじ１の山２に噛む歯３は雄ねじ１
の軸心方向に設けた一対の楔４，４′に挾み、雄ねじ１
の半径方向に移動できるようにして支持する。一方、ナ
ツトホルダ５に設けたテーパ孔６のテーバに前記楔４．
４′のテーバを摺接し、楔４．４′ はねじ７．７′
に係合させ、このねじ７，７′ を雄ねじ１の半径方向
に、そして、互いに反対方向に移動するのに伴なって楔
４．４′を互いに反対方向に移動し、歯３を雄ねじ１の
軸心方向に位置調整し、楔４．４′ を共に、雄ねじ１
の軸心に向って移動して歯３を固着する。又反対に喫４
，４を遠心方向に移動した場合は、歯３の固着を開放す
るようになる。ナツトホルダ５に設けたスタッド８にサ
ポート９をボルト１０で固定し、このサポート ９と歯
３と間にスプリング１１を張設して、歯３が山２のリー
ド面２′にスプリング１１の弾力で当接するようにする
。ナツトホルダ５は第２図を８矢視した第３図に示す如
く、ワイヤカット放電加工等によって凸部１２、凹部１
３を有して、分割し、両者を嵌合して一体となし、内径
面を雄ねじ１の外径面に摺接する構成にしてもよい。そ
して、テーパ孔６は図示していないＮＣ装置で制御する
ワイヤカット放電加工、又は型彫放電加工によって、雄
ねじ１のリードに沿って設けるようにしたものである。The male thread 1 and the teeth 3 that engage the threads 2 of this male thread 1 are the male thread 1.
A pair of wedges 4, 4' provided in the axial direction of the
support so that it can move in the radial direction. On the other hand, the wedge 4. is attached to the taper of the taper hole 6 provided in the nut holder 5.
The taper of 4' is in sliding contact, and the wedge 4.4' is screwed with screw 7.7'.
As the screws 7, 7' are moved in the radial direction of the male thread 1 and in opposite directions, the wedges 4, 4' are moved in opposite directions, and the teeth 3 are moved in the radial direction of the male thread 1. Adjust the position in the axial direction of the
The tooth 3 is fixed by moving toward the axis of the tooth 3. Also, on the contrary, smoke 4
, 4 in the distal direction, the fixation of the teeth 3 is released. A support 9 is fixed to a stud 8 provided on the nut holder 5 with a bolt 10, and a spring 11 is tensioned between the support 9 and the tooth 3. Make sure they touch each other. As shown in FIG. 3 when viewed from the 8 arrow in FIG.
It is also possible to have a structure in which the inner diameter surface is slidably contacted with the outer diameter surface of the male thread 1 by dividing the threaded thread 3 into two parts and fitting them together to form an integral body. The tapered hole 6 is formed along the lead of the male screw 1 by wire-cut electric discharge machining or die-sinking electric discharge machining controlled by an NC device (not shown).
このナツトホルダ５や特に歯３はグラファイト、又はグ
ラファイトにＴｉ Ｃ，Ｔｉ Ｎ、ＷＣを分散したもの
とか、多くの炭化物をグラファイトに分散したもの、或
いは部分的に炭化物とじたものを用いて作るとよい。The nut holder 5 and especially the teeth 3 are preferably made of graphite, graphite with TiC, TiN, WC dispersed, many carbides dispersed in graphite, or partially bound with carbide. .
第４図は雄ねじ １のリード面２′にマイクロ溶接によ
る表面層を得るマイクロ溶接装置を例示したものである
。放電電極と同じ作用をする被覆材１４の材質は通常の
放電加工に使用する電極と異なり、ＷＣＭ、Ｔｉ ＣＭ
、ＴｉＮ系、ＷＣＢ系、２ｒ３系、或いはＷｚ Ｓ、
１ｙｌｏ ３２等の混合したものや、固体潤滑性を有す
るＷ、Ｍｏ 、Ａｍ又はＳｎ等の金属、或いはこれ等の
金属に鉄等を混合したものを利用する。この被覆材１４
はスピンドル１５に着脱可能に取付けられ、スピンドル
１５は振動片１６に連結されるが、その間、図示してい
ない回転装置によって回転するように連結することもあ
る。FIG. 4 shows an example of a micro-welding device for forming a surface layer on the lead surface 2' of the male thread 1 by micro-welding. The material of the covering material 14, which has the same function as the discharge electrode, is different from that of electrodes used in normal discharge machining, and is made of WCM, TiCM, etc.
, TiN system, WCB system, 2r3 system, or Wz S,
1ylo 32, a metal such as W, Mo, Am, or Sn having solid lubricating properties, or a mixture of these metals with iron or the like is used. This covering material 14
is removably attached to a spindle 15, and the spindle 15 is connected to the vibrating piece 16, and may also be connected to rotate by a rotating device (not shown).
振動片１６の一端部分をねじ等で取付はヘッド１７には
蚤動片１６を撮動させる電極石１８を取付け、励磁コイ
ル１９で励磁をする。ヘッド１７に取付けたガイド軸２
０には水平なアーム２１にスライドボールベアリング２
２によって摺動可能に支持し、同じヘッド１７に取付け
たスクリュ２３はアーム２１に軸受け２４で支持したナ
ツト２５に螺合し、このナツト２５の回動はナツト２５
に固着したウオームホイール２６に噛合う図示していな
いつｔ−ムをアーム２１に取付けたサーボモータ２７で
回転することによってなされ、ヘッド１７をＺ軸方向に
移動する。支持台２８は手動、若しくはサーボモータ２
９でサドル３０の上をＸ軸方向に移動し、サドル３０は
手動、若しくはサーボモータ３１でテーブル３２上をＹ
軸方向に移動するようにする。しかして、テーブル３２
を固定したベット３３には水平アーム２１を取付けたコ
ラム３４を固定するが、図示していないが、このコラム
３４はベット３３の上を移動するようにして被覆材１４
を移動するようにしてもよい。支持台２８の上には回転
制御装置３５とセンタ３６とで支持した雄ねじ１に被覆
材１４が対向している。One end of the vibrating piece 16 is attached with a screw or the like, and an electrode stone 18 for moving the vibrating piece 16 is attached to the head 17, and an excitation coil 19 is used to excite the vibrating piece 16. Guide shaft 2 attached to head 17
0 has a slide ball bearing 2 on a horizontal arm 21
A screw 23 mounted on the same head 17 is threaded into a nut 25 supported on the arm 21 by a bearing 24, and the rotation of this nut 25 is
The head 17 is moved in the Z-axis direction by rotating a t-arm (not shown) that meshes with a worm wheel 26 fixed to the arm 21 using a servo motor 27 attached to the arm 21. The support stand 28 can be operated manually or by the servo motor 2.
9, the saddle 30 is moved in the X-axis direction, and the saddle 30 is moved manually or by the servo motor 31 on the table 32 in the Y-axis direction.
Make it move in the axial direction. However, table 32
A column 34 to which a horizontal arm 21 is attached is fixed to the bed 33 to which the covering material 14 is fixed. Although not shown, this column 34 moves on the bed 33 to
may be moved. On the support stand 28, the covering material 14 faces the male screw 1 supported by the rotation control device 35 and the center 36.
ＮＧ装置３１はサーボモータ２７，２９．３１及び回転
制御装置３５を制御駆動したり、励磁コイル１９を励磁
する励磁電源３８を制御すると共に被覆材１４と雄ねじ
１との間に放電電圧を印加する加工電源３９を制御する
。The NG device 31 controls and drives the servo motors 27, 29.31 and the rotation control device 35, controls the excitation power source 38 that excites the excitation coil 19, and applies a discharge voltage between the coating material 14 and the male screw 1. Controls the processing power source 39.
例えばＧｏ ６％を含むＷＣの被覆材１０を電極としｒ
１０００ＲＰ Ｍで回転しながら７５ｍｍ／ｗｉｎの
速さで移動しながら、電流値３０Ａ１ τ０ｎ３０μｓ
、τｏｆｆ４０μｓのパルス電流を印加し、光点として
４ ｍｍφを５ ｍｍピッチで表面粗さ１１μＲｍａｘ
の表面層を得た結果耐摩耗性を向上した。しかして、グ
ラファイト等で作った歯をテーパによって、ピッチ位置
を出すようにしたものであるから、その噛み合い度と、
且つ正しいピッチ位置でバックラッシュが無く、摩擦係
数は０．０８〜０．１程度の優れたねじ装置を提供する
ことができた。For example, if a WC coating 10 containing 6% Go is used as an electrode, r
Rotating at 1000RPM and moving at a speed of 75mm/win, current value 30A1 τ0n30μs
, a pulse current of τoff of 40 μs is applied, and a light spot of 4 mmφ is set at a pitch of 5 mm with a surface roughness of 11 μRmax.
As a result, the wear resistance was improved. However, since the teeth are made of graphite or the like and are tapered to determine the pitch position, the degree of engagement,
In addition, it was possible to provide an excellent screw device with no backlash at the correct pitch position and a friction coefficient of about 0.08 to 0.1.
第１図は本発明のねじ装置の断面図、第２図は第１図の
−へ断面矢視図、第３図は第２図の８矢視部分図、第４
図はマイクロ溶接装置を例示した図である。１・・・・・・・・・雄ねじ３・・・・・・・・・歯４・・・・・・・・・楔５・・・・・・・・・ナツトホルダ６・・・・・・・・・テーバ孔特 許 出 願 人株式会社井上ジャパックス研究所代表者 井 上 潔第１図第３図Fig. 1 is a cross-sectional view of the screw device of the present invention, Fig. 2 is a cross-sectional view taken along the - direction in Fig. 1, Fig. 3 is a partial view taken in the direction indicated by the 8 arrow in Fig. 2, and Fig.
The figure is a diagram illustrating a micro welding device. 1... Male thread 3... Teeth 4... Wedge 5... Nut holder 6... ...Taber Hole Patent Applicant: Kiyoshi Inoue, Representative of Inoue Japax Laboratory Co., Ltd. Figure 1 Figure 3
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31307387AJPH01153861A (en) | 1987-12-10 | 1987-12-10 | Screw device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31307387AJPH01153861A (en) | 1987-12-10 | 1987-12-10 | Screw device |
| Publication Number | Publication Date |
|---|---|
| JPH01153861Atrue JPH01153861A (en) | 1989-06-16 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31307387APendingJPH01153861A (en) | 1987-12-10 | 1987-12-10 | Screw device |
| Country | Link |
|---|---|
| JP (1) | JPH01153861A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0487055U (en)* | 1990-12-12 | 1992-07-29 | ||
| US5303606A (en)* | 1993-04-15 | 1994-04-19 | Kokinda Mark A | Anti-backlash nut having a free floating insert for applying an axial force to a lead screw |
| WO1997002441A1 (en)* | 1995-07-05 | 1997-01-23 | Norco, Inc. | Mechanical drive assembly |
| US6311576B1 (en)* | 1999-10-04 | 2001-11-06 | Techmetric Inc. | Anti-backlash nut for lead screw |
| KR100652278B1 (en)* | 2004-05-14 | 2006-11-30 | 유겐가이샤 하마인터나쇼나루 | Moving body and actuating device having the same |
| CN102635672A (en)* | 2012-04-28 | 2012-08-15 | 南京康尼股份有限公司 | Automatic lubricating device being suitable for nut-screw transmission mechanism |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0487055U (en)* | 1990-12-12 | 1992-07-29 | ||
| US5303606A (en)* | 1993-04-15 | 1994-04-19 | Kokinda Mark A | Anti-backlash nut having a free floating insert for applying an axial force to a lead screw |
| WO1997002441A1 (en)* | 1995-07-05 | 1997-01-23 | Norco, Inc. | Mechanical drive assembly |
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| US5860324A (en)* | 1995-07-05 | 1999-01-19 | Norco, Inc. | Mechanical drive assembly incorporating counter-spring biased, radially-adjustable rollers |
| US6311576B1 (en)* | 1999-10-04 | 2001-11-06 | Techmetric Inc. | Anti-backlash nut for lead screw |
| KR100652278B1 (en)* | 2004-05-14 | 2006-11-30 | 유겐가이샤 하마인터나쇼나루 | Moving body and actuating device having the same |
| CN102635672A (en)* | 2012-04-28 | 2012-08-15 | 南京康尼股份有限公司 | Automatic lubricating device being suitable for nut-screw transmission mechanism |
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