JP4516048B2 - Squeegee with adjustable gap - Google Patents

Squeegee with adjustable gap Download PDF

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JP4516048B2
JP4516048B2 JP2006139330A JP2006139330A JP4516048B2 JP 4516048 B2 JP4516048 B2 JP 4516048B2 JP 2006139330 A JP2006139330 A JP 2006139330A JP 2006139330 A JP2006139330 A JP 2006139330A JP 4516048 B2 JP4516048 B2 JP 4516048B2
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squeegee
nut
groove
gap
conical surface
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JP2007309428A (en
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鄒健偉
顔育芳
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Hiwin Technologies Corp
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Hiwin Technologies Corp
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Description

本発明は、ボールねじに係り、特に、ボールねじのナットの端部に取付けられた隙間調整可能なスキージに関するものである。
The present invention relates to a ball screw, and more particularly, to a squeegee capable of adjusting a clearance attached to an end of a ball screw nut.

図１に示すように、従来のボールねじは、ねじ軸１０に組み付けられたナット１２の両端にはスキージ１１が嵌め設けてあり、前記スキージ１２１は位置決めねじ素子１２１によって締付され、前記スキージ１１は主に凸縁１１１によって異物の侵入および潤滑油の漏れを防止するが、加工誤差を補償するために、前記スキージ１１の凸縁１１１と、ねじ軸１０にある螺旋溝１０１の間に一定の隙間（例えば0.25mm）が維持され、生産誤差を加えたと上記隙間は更に大きくなり、だが、よく知られたデータによれば、異物の粒径が0.17 mmを超えたとボールねじを損壊するので、約0.25mmの隙間を維持することは異物の侵入および潤滑油の漏れを防止する効果はない。   As shown in FIG. 1, the conventional ball screw has a squeegee 11 fitted on both ends of a nut 12 assembled to a screw shaft 10, and the squeegee 121 is fastened by a positioning screw element 121. Mainly prevents the intrusion of foreign matter and leakage of the lubricating oil by the convex edge 111, but in order to compensate for the processing error, a certain distance between the convex edge 111 of the squeegee 11 and the spiral groove 101 on the screw shaft 10 is fixed. If a gap (for example, 0.25 mm) is maintained and a production error is added, the gap becomes larger, but according to well-known data, if the particle size of the foreign material exceeds 0.17 mm, the ball screw will be damaged. Maintaining a gap of about 0.25 mm has no effect of preventing foreign material intrusion and lubricating oil leakage.

削り効果を良くするために、前記スキージ１１の凸縁１１１と、ねじ軸１０にある螺旋溝１０１の間の隙間をゼロにし、そうすると、前記スキージ１１の凸縁１１１はねじ軸１０の螺旋溝１０１の表面に当接し、これにより、摩擦抵抗は大幅に増加し、ボールねじの働き効率は大幅に低下になり、且つ異物はスキージ１１と螺旋溝１０１の接触箇所に大量に堆積する問題がある。   In order to improve the shaving effect, the gap between the convex edge 111 of the squeegee 11 and the spiral groove 101 on the screw shaft 10 is made zero, and then the convex edge 111 of the squeegee 11 becomes the spiral groove 101 of the screw shaft 10. As a result, the frictional resistance is greatly increased, the working efficiency of the ball screw is significantly reduced, and there is a problem that a large amount of foreign matter accumulates at the contact portion between the squeegee 11 and the spiral groove 101.

そこで、ボールねじはつぎの二つの方式に改良された。   Therefore, the ball screw has been improved to the following two methods.

一つ目は、図２に示す米国特許ＵＳ6,571,653 B1に提案されている。これは、上記と同様のように、そのスキージ１３は凸縁１３１によって異物の侵入および潤滑油の漏れを防止し、且つ前記凸縁１３１の背面に環状バネ１４を設けることにより半径方向への圧迫力を増加し、また、前記凸縁１３１に一端が閉鎖された切り口１３２を開設することにより摩擦抵抗を低減する。
しかし、このような切り口１３２によれば、スキージ１３の回転に伴って異物は切り口１３２に快速に堆積し（送り方向には大量に堆積し）、且つ異物はずっとボールねじに残る。そして前記環状バネ１４により前記凸縁１３１の摩擦抵抗は大幅に増加するので、ボールねじの働き効率は大幅に低下する。
また、バネは弾性疲労により徐々に緩めになる問題があり、ひいては異物の侵入および潤滑油の漏れを防止する効果がどんどん衰えていく。 The first is proposed in US Pat. No. 6,571,653 B1 shown in FIG. This is because, as described above, the squeegee 13 prevents the intrusion of foreign matters and leakage of the lubricating oil by the convex edge 131, and is compressed in the radial direction by providing the annular spring 14 on the back surface of the convex edge 131. The frictional resistance is reduced by increasing the force and opening the cut edge 132 with one end closed on the convex edge 131.
However, according to such a cut end 132, the foreign matter accumulates rapidly on the cut end 132 as the squeegee 13 rotates (a large amount accumulates in the feed direction), and the foreign matter remains on the ball screw all the time. Since the friction resistance of the convex edge 131 is greatly increased by the annular spring 14, the working efficiency of the ball screw is greatly reduced.
In addition, the spring has a problem that it is gradually loosened due to elastic fatigue, and as a result, the effect of preventing the intrusion of foreign matter and the leakage of the lubricating oil gradually decreases.

二つ目は、図３に示すような製品が提案されている。これは、そのナット１５はＣ型係りリング１６によって環状ブラシ１７を位置決め、且つ前記環状ブラシ１７をスキージとする。
しかし、環状ブラシ１７によれば、摩擦抵抗の過大および隙間の維持などの問題はなくなるが、異物の侵入を防止できなくなり、ボールねじを長期間に亘って使用すると、異物がナット１５とねじ軸１８の間に侵入して、潤滑油を大量に漏出する。そのため、ボールねじの運行は不安定になる。
Second, a product as shown in FIG. 3 has been proposed. The nut 15 positions the annular brush 17 by a C-shaped engagement ring 16, and the annular brush 17 serves as a squeegee.
However, the annular brush 17 eliminates problems such as excessive frictional resistance and maintenance of gaps. However, foreign matter cannot be prevented from entering, and when a ball screw is used for a long period of time, the foreign matter is removed from the nut 15 and the screw shaft. Intrudes between 18 and leaks a large amount of lubricating oil. Therefore, the operation of the ball screw becomes unstable.

本発明の主な目的は、隙間を調整可能なスキージを提供することにある。   The main objective of this invention is to provide the squeegee which can adjust a clearance gap.

本発明の次の目的は、削りの摩擦抵抗が低減になり、異物を有効に案内して排出可能なスキージを提供することにある。
Another object of the present invention is to provide a squeegee that can reduce the frictional resistance of shaving and can effectively guide and discharge foreign matter.

上記目的を達成するためになされた本願の第１発明は、ナットとねじ軸の間に組み付けられ、前記ナットの内周面環状溝内に設置された隙間調整可能なスキージにおいて、前記スキージは、最大外径が前記ナットの内周面環状溝よりも大きい環状撓み可能な部材であり、その外周面には前記ナットの内周面環状溝へ傾斜した円錐面が設けてあり、前記円錐面には裏側へ前記削り歯部を貫通した切り溝が開設してあり、前記スキージの裏側にはボールねじの螺旋溝に噛み合う螺旋削り歯部が設けてあり、前記螺旋削り歯部と前記螺旋溝との間のギャップは、前記スキージの前記ナットの内側から前記スキージの前記ナットの外側へ徐々に増加し、前記螺旋削り歯部は、前記スキージの前記ナットの内側に位置する端部から、前記スキージの前記ナットの外側に位置する端部に螺旋的に伸び、その幅は前記スキージの前記ナットの内側に位置する端部が前記スキージの前記ナットの外側に位置する端部より広く、しかも前記内側から前記外側へ徐々に減少するように形成したことを特徴とする、隙間調整可能なスキージであることを要旨としている。 The first invention of the present application made to achieve the above object is a squeegee that is assembled between a nut and a screw shaft and is installed in an annular groove on the inner peripheral surface of the nut. It is a member that can be bent in an annular shape having a maximum outer diameter larger than that of the inner peripheral surface annular groove of the nut, and an outer peripheral surface thereof is provided with a conical surface inclined to the inner peripheral surface annular groove of the nut. Has a slit that penetrates the shaving tooth portion on the back side, and a spiral shaving tooth portion that meshes with the spiral groove of a ball screw is provided on the back side of the squeegee, and the spiral shaving tooth portion and the spiral groove the gap between increases gradually from the inside of the nut of the squeegee to the outside of the nut of the squeegee, before Symbol helical scraping teeth, the end located inside the nut of the squeegee, the The squeegee said The end of the squeegee extends spirally to the end located outside the nut, and the width of the end located inside the nut of the squeegee is wider than the end located outside the nut of the squeegee, and from the inside The gist of the present invention is a squeegee with an adjustable gap, which is formed so as to gradually decrease outward .

本願の第２発明では、前記スキージの円錐面の一端には案内円錐面が設けてあり、前記案内円錐面は、前記ナットの螺旋溝に噛み合うことを特徴とする、第１発明に記載の隙間調整可能なスキージであることを要旨としている。
In the second aspect of the invention, said one end of the conical surface of the squeegee is provided with a guide conical surface, the guide conical surface is characterized in that mesh with the helical groove of the nut, according to the first shot bright The gist is that the gap is adjustable.

本願の第３発明では、前記ナットの内周面環状溝の形状は、円筒形状、円筒形状と円錐形状の組合、又は二つの円錐形状の組合の何れか一つの形状であることを特徴とする、請求項１又は２に記載の隙間調整可能なスキージであることを要旨としている。 In the third invention of the present application, the shape of the annular groove on the inner peripheral surface of the nut is any one of a cylindrical shape , a combination of a cylindrical shape and a conical shape , or a combination of two conical shapes. The gist of the invention is the squeegee capable of adjusting the clearance according to claim 1 or 2.

本願の第４発明では、前記切り溝は、ボールねじの螺旋溝の形成方向に向けて斜めに開設されたことを特徴とする第１乃至第３発明のいずれかに記載の隙間調整可能なスキージであることを要旨としている。 In the fourth aspect of the present invention, the cut groove has first through gap adjustable squeegee according to any one of the third invention is characterized in that opened obliquely toward the forming direction of the spiral grooves of the ball screw It is the gist.

本発明に係る隙間調整可能なスキージによれば、隙間を調整可能となって、削りの摩擦抵抗を低減して、異物を有効に案内して排出可能になるという効果がある。
According to the squeegee capable of adjusting the gap according to the present invention, the gap can be adjusted, and the frictional resistance of shaving can be reduced, and foreign matters can be effectively guided and discharged.

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。   Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

まず、図４と図５を参照する。本発明に係る隙間調整可能なスキージ３０は、一つのボールねじ２０と、二つのスキージ３０と、一つのナット４０とから構成され、ナット４０に合せてボールねじ２０に組付ける。ナットとねじ軸の構造は図６と図７を参照する。   First, FIG. 4 and FIG. 5 will be referred to. The squeegee 30 with adjustable gap according to the present invention includes one ball screw 20, two squeegees 30, and one nut 40. The squeegee 30 is assembled to the ball screw 20 according to the nut 40. Refer to FIGS. 6 and 7 for the structure of the nut and screw shaft.

前記ボールねじ２０は、周面に螺旋溝２１が設けてある。   The ball screw 20 has a spiral groove 21 on the circumferential surface.

前記スキージ３０は、ボールねじ２０に嵌められる環状部材であり、その裏側にはボールねじ２０の螺旋溝２１に噛み合う螺旋削り歯部３１が設けてある。前記螺旋削り歯部３１と螺旋溝２１の間のギャップは内側から外側へ徐々に増加する。これにより、螺旋削り歯部の幅は内側から外側へ徐々に減少する。そして前記スキージ３０の周面には円錐面３２が設けてある。前記円錐面３２の一端には案内円錐面３３が設けてある。前記円錐面３２には裏側へ前記削り歯部３１を貫通した切り溝３４が開設してあり、前記切り溝３４はボールねじ２０の螺旋溝２１の方向に沿って斜めに開設されている。   The squeegee 30 is an annular member that is fitted to the ball screw 20, and a helical tooth portion 31 that meshes with the helical groove 21 of the ball screw 20 is provided on the back side thereof. The gap between the helical tooth portion 31 and the helical groove 21 gradually increases from the inside to the outside. Thereby, the width | variety of a helical cutting tooth part reduces gradually from an inner side to an outer side. A conical surface 32 is provided on the peripheral surface of the squeegee 30. A guide conical surface 33 is provided at one end of the conical surface 32. The conical surface 32 has a cut groove 34 penetrating the shaving tooth portion 31 on the back side, and the cut groove 34 is opened obliquely along the direction of the spiral groove 21 of the ball screw 20.

前記ナット４０は、ボールねじ２０に嵌めて設けられる。その二つの端面には内周面環状溝４２が開設してある。前記内周面環状溝４２はスキージ３０の円錐面３２に対応し、且つ前記内周面環状溝４２の内径はスキージ３０の最大外径よりも小さい。スキージ３０は円錐面３２で前記内周面環状溝４２の内周面に緊迫して嵌合し、前記切り溝３４によりスキージ３０は半径方向に縮小になる。また、ナット４０には位置決め穴４１が半径方向に開設され、前記位置決め穴４１により固定ねじ４３がスキージ３０の円錐面３２に締付られる。そうすると、スキージ３０が位置決められ（半径方向への変形量も固定になり）、ユーザーの要求の通りに前記削り歯部３１を予定の隙間に調整することができる。   The nut 40 is provided by being fitted to the ball screw 20. Inner circumferential surface annular grooves 42 are formed on the two end surfaces. The inner circumferential surface annular groove 42 corresponds to the conical surface 32 of the squeegee 30, and the inner circumferential surface annular groove 42 has an inner diameter smaller than the maximum outer diameter of the squeegee 30. The squeegee 30 is tightly fitted to the inner peripheral surface of the inner peripheral surface annular groove 42 at the conical surface 32, and the squeegee 30 is reduced in the radial direction by the cut groove 34. A positioning hole 41 is formed in the nut 40 in the radial direction, and the fixing screw 43 is fastened to the conical surface 32 of the squeegee 30 by the positioning hole 41. Then, the squeegee 30 is positioned (the amount of deformation in the radial direction is also fixed), and the shaving tooth portion 31 can be adjusted to a predetermined gap as requested by the user.

次に、本発明の動作原理について、図面を参照して詳細に説明する。スキージの隙間を減少しようとする場合には、スキージ３０がナット４０内に位置決められ、スキージ３０は削り歯部３１でボールねじ２０の螺旋溝２１に対応するので、ナット４０に対して本発明に係るスキージ３０を回転させると、円錐面３２によりスキージ３０が内周面環状溝４２内に緊迫し嵌合され、前記スキージ３０を内周面環状溝４２の内側へ移動することに伴って、切り溝３４により前記スキージ３０は半径方向へ縮小し変形する。螺旋削り歯部３１と螺旋溝２１の隙間は内側から外側へ徐々に増加する。しかし、前記スキージ３０が半径方向に変形すると、各螺旋削り歯部３１と螺旋溝２１の隙間は一定になる（すなわち、外側になるほど、螺旋削り歯部３１の半径方向への変形量は大きく）。そのため、ユーザーは必要によってスキージ３０の隙間を縮小でき、更に、ナット４０の位置決め穴４１に螺着された固定ねじ４３を半径方向にねじ込むと前記スキージ３０が締付される。 Next, the operation principle of the present invention will be described in detail with reference to the drawings. In order to reduce the gap between the squeegees, the squeegee 30 is positioned in the nut 40, and the squeegee 30 corresponds to the spiral groove 21 of the ball screw 20 at the shaving tooth portion 31. When the squeegee 30 is rotated, the squeegee 30 is tightly fitted into the inner circumferential annular groove 42 by the conical surface 32, and the squeegee 30 is moved inward of the inner circumferential annular groove 42. The squeegee 30 is contracted and deformed in the radial direction by the groove 34. The clearance between the spiral tooth portion 31 and the spiral groove 21 gradually increases from the inside to the outside. However, when the squeegee 30 is deformed in the radial direction, the gap between each spiral cutting tooth portion 31 and the spiral groove 21 becomes constant (that is, the deformation amount in the radial direction of the spiral cutting tooth portion 31 increases as it goes outward). . Therefore, the user can reduce the gap of the squeegee 30 as necessary, and the squeegee 30 is tightened when the fixing screw 43 screwed into the positioning hole 41 of the nut 40 is screwed in the radial direction.

スキージの隙間を大きくしようとする場合には、まず、前記固定ねじ４３を緩めて（スキージ３０を締付しない状態にし）、ナット４０に対して本発明に係るスキージ３０を逆方向に回転させる。すると、円錐面３２によりスキージ３０が内周面環状溝４２から徐々に脱出し、前記スキージ３０を内周面環状溝４２の外側へ移動することに伴って、切り溝３４により前記スキージ３０は半径方向へ拡張し変形し、且つ螺旋削り歯部３１と螺旋溝２１の隙間も拡大になる。そのため、ユーザーは必要によってスキージ３０の隙間を拡大できる。更に、ナット４０の位置決め穴４１に螺着された固定ねじ４３を半径方向にねじ込むと前記スキージ３０が締付される。   In order to increase the squeegee clearance, first, the fixing screw 43 is loosened (the squeegee 30 is not tightened), and the squeegee 30 according to the present invention is rotated in the reverse direction with respect to the nut 40. Then, the squeegee 30 gradually escapes from the inner peripheral surface annular groove 42 by the conical surface 32, and the squeegee 30 has a radius due to the cut groove 34 as the squeegee 30 moves to the outside of the inner peripheral surface annular groove 42. It expands and deforms in the direction, and the gap between the spiral toothed portion 31 and the spiral groove 21 is enlarged. Therefore, the user can enlarge the gap of the squeegee 30 as necessary. Furthermore, when the fixing screw 43 screwed into the positioning hole 41 of the nut 40 is screwed in the radial direction, the squeegee 30 is tightened.

また、前記スキージ３０の円錐面３２には裏側へ前記削り歯部３１を貫通した切り溝３４が開設してあり、前記切り溝３４がボールねじ２０の螺旋溝２１の方向に沿って斜めに開設されているので、本発明に係るスキージ３０は螺旋削り歯部３１で異物を削る際に、異物が斜めに開設された前記切り溝３４に沿って排出される（異物を外側へ排出可能にするために、傾斜角度は回転方向に合せて適当に設計することが可能であり）。そのため、本発明に係るスキージ３０によれば、異物は過度に堆積しなくなる。   Further, a cut groove 34 penetrating the shaving tooth portion 31 is opened on the conical surface 32 of the squeegee 30, and the cut groove 34 is opened obliquely along the direction of the spiral groove 21 of the ball screw 20. Therefore, the squeegee 30 according to the present invention discharges the foreign matter along the cut groove 34 formed obliquely when the foreign matter is scraped by the spiral cutting tooth portion 31 (the foreign matter can be discharged to the outside). Therefore, the inclination angle can be appropriately designed according to the rotation direction). Therefore, according to the squeegee 30 according to the present invention, foreign matters are not excessively accumulated.

特に、本発明に係るスキージ３０の円錐面３２の一端には案内円錐面３３が設けてあり、前記案内円錐面３３は、ナット４０の内周面環状溝４２の内径がスキージ３０の最大外径よりも小さいことを条件として設計されたものである。そのため、前記案内円錐面３３により組付作業の作業者はスキージ３０をナット４０の内周面環状溝４２に快速に取り付けることができる。したがって、スキージ３０の組付作業が容易になる。   In particular, a guide conical surface 33 is provided at one end of the conical surface 32 of the squeegee 30 according to the present invention, and the inner diameter of the inner circumferential surface annular groove 42 of the nut 40 is the maximum outer diameter of the squeegee 30. It is designed on condition that it is smaller than. Therefore, the guide cone surface 33 allows the worker of the assembling work to quickly attach the squeegee 30 to the inner peripheral surface annular groove 42 of the nut 40. Therefore, the assembling work of the squeegee 30 is facilitated.

最後に、図８乃至図１０に示すように、本発明に係るナット４０の内周面環状溝４２は、図８に示す円筒形状にしてもよいし、図９に示す円錐形状と円筒形状の組合にしてもよいし、また図１０に示す二つの円錐形状の組合にしてもよくい。これらの形態はスキージに合せたと同様のようにギャップを調整可能である。したがって、本発明に係るナット４０の内周面環状溝４２は必要によって上記形態を適宜選択して採用しても、ギャップを調整することができる。
Finally, as shown in FIGS. 8 to 10, the inner circumferential surface annular groove 42 of the nut 40 according to the present invention may have a cylindrical shape shown in FIG. 8, or a conical shape and a cylindrical shape shown in FIG. 9. It may be a combination, or may be a combination of two conical shapes shown in FIG. In these forms, the gap can be adjusted in the same manner as in the squeegee. Therefore, the inner peripheral surface annular groove 42 of the nut 40 according to the present invention can adjust the gap even if the above-mentioned form is appropriately selected and adopted as necessary.

従来例１の断面図である。It is sectional drawing of the prior art example 1. FIG. 従来例２の断面図である。It is sectional drawing of the prior art example 2. FIG. 従来例３の断面図である。It is sectional drawing of the prior art example 3. FIG. 本発明に係るスキージの斜視図である。1 is a perspective view of a squeegee according to the present invention. 本発明に係るスキージの側面図である。1 is a side view of a squeegee according to the present invention. 本発明に係るスキージの組付けられた状態を示す断面図である。It is sectional drawing which shows the state in which the squeegee which concerns on this invention was assembled | attached. 本発明の組合状態を示す断面図である。It is sectional drawing which shows the union state of this invention. 本発明に係るナットの内周面環状溝の実施例１を示す断面図である。It is sectional drawing which shows Example 1 of the internal peripheral surface annular groove of the nut which concerns on this invention. 本発明に係るナットの内周面環状溝の実施例２を示す断面図である。It is sectional drawing which shows Example 2 of the internal peripheral surface annular groove of the nut which concerns on this invention. 本発明に係るナットの内周面環状溝の実施例３を示す断面図である。It is sectional drawing which shows Example 3 of the internal peripheral surface annular groove of the nut which concerns on this invention.

符号の説明Explanation of symbols

１０ ねじ軸 １０１ 螺旋溝
１１１ スキージ １１１ 凸縁
１２ ナット １２１ 位置決め用ねじ素子
１３ スキージ １３１ 凸縁
１３２ 切り口 １４ 環状バネ
１５ ナット １６ Ｃ型係りリング
１７ 環状ブラシ １８ ねじ軸
２０ ボールねじ ２１ 螺旋溝
３０ スキージ ３１ 削り歯部
３２ 円錐面 ３４ 切り溝
４０ ナット ４１ 位置決め穴
４２ 内周面環状溝 ４３ 固定ねじ
DESCRIPTION OF SYMBOLS 10 Screw shaft 101 Spiral groove 111 Squeegee 111 Convex edge 12 Nut 121 Positioning screw element 13 Squeegee 131 Convex edge 132 Cut 14 Annular spring 15 Nut 16 C-type engagement ring 17 Annular brush 18 Screw shaft 20 Ball screw 21 Spiral groove 30 Squeegee 31 Shaving tooth portion 32 Conical surface 34 Groove 40 Nuts 41 Positioning hole 42 Inner peripheral surface annular groove 43 Fixing screw

Claims (4)

ナットとねじ軸の間に組み付けられ、前記ナットの内周面環状溝内に設置された隙間調整可能なスキージにおいて、
前記スキージは、最大外径が前記ナットの内周面環状溝よりも大きい環状撓み可能な部材であり、
その外周面には前記ナットの内周面環状溝へ傾斜した円錐面が設けてあり、
前記円錐面には裏側へ前記削り歯部を貫通した切り溝が開設してあり、
前記スキージの裏側にはボールねじの螺旋溝に噛み合う螺旋削り歯部が設けてあり、
前記螺旋削り歯部と前記螺旋溝との間のギャップは、前記スキージの前記ナットの内側から前記スキージの前記ナットの外側へ徐々に増加し、
前記螺旋削り歯部は、前記スキージの前記ナットの内側に位置する端部から、前記スキージの前記ナットの外側に位置する端部に螺旋的に伸び、その幅は前記スキージの前記ナットの内側に位置する端部が前記スキージの前記ナットの外側に位置する端部より広く、しかも前記内側から前記外側へ徐々に減少するように形成したことを特徴とする、
隙間調整可能なスキージ。 In a squeegee that is assembled between a nut and a screw shaft and is installed in an annular groove on the inner peripheral surface of the nut, the gap being adjustable.
The squeegee is an annular deflectable member whose maximum outer diameter is larger than the inner peripheral annular groove of the nut,
The outer peripheral surface is provided with a conical surface inclined to the inner peripheral surface annular groove of the nut,
The conical surface is provided with a kerf that penetrates the shaving portion to the back side,
On the back side of the squeegee, there is provided a helical tooth portion that meshes with the helical groove of the ball screw,
The gap between the helical tooth portion and the helical groove gradually increases from the inside of the nut of the squeegee to the outside of the nut of the squeegee,
Before SL helical scraping teeth, the end located inside the nut of the squeegee, helically extending to an end located outside of the nut of the squeegee, the width inside the nut of the squeegee The end portion located in the squeegee is wider than the end portion located outside the nut, and is formed so as to gradually decrease from the inside to the outside .
Squeegee with adjustable gap. 前記スキージの円錐面の一端には案内円錐面が設けてあり、前記案内円錐面は、前記ナットの螺旋溝に噛み合うことを特徴とする、請求項１に記載の隙間調整可能なスキージ。 2. The squeegee with adjustable gap according to claim 1, wherein a guide conical surface is provided at one end of the conical surface of the squeegee, and the guide conical surface meshes with a spiral groove of the nut. 前記ナットの内周面環状溝の形状は、円筒形状、円筒形状と円錐形状の組合、又は二つの円錐形状の組合の何れか一つの形状であることを特徴とする、請求項１又は２に記載の隙間調整可能なスキージ。 The shape of the annular groove on the inner peripheral surface of the nut is any one of a cylindrical shape , a combination of a cylindrical shape and a conical shape , or a combination of two conical shapes, according to claim 1 or 2. Squeegee with adjustable gap. 前記切り溝は、ボールねじの螺旋溝の形成方向に向けて斜めに開設されたことを特徴とする、請求項１乃至３のいずれかに記載の隙間調整可能なスキージ。 The squeegee with adjustable gap according to any one of claims 1 to 3, wherein the cut groove is formed obliquely in a direction in which the spiral groove of the ball screw is formed.
JP2006139330A 2006-05-18 2006-05-18 Squeegee with adjustable gap Active JP4516048B2 (en)

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JP5983050B2 (en) * 2012-05-31 2016-08-31 日本精工株式会社 Ball screw device
JP2014031845A (en) * 2012-08-03 2014-02-20 Nsk Ltd Ball screw device
JP6252135B2 (en) * 2013-11-28 2017-12-27 日本精工株式会社 Ball screw and seal used therefor
JP6252136B2 (en) * 2013-11-28 2017-12-27 日本精工株式会社 Ball screw

Citations (2)

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Publication number Priority date Publication date Assignee Title
JP2000145916A (en) * 1998-11-13 2000-05-26 Thk Co Ltd Ball screw
JP2000145917A (en) * 1998-11-11 2000-05-26 Thk Co Ltd Ball screw

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000145917A (en) * 1998-11-11 2000-05-26 Thk Co Ltd Ball screw
JP2000145916A (en) * 1998-11-13 2000-05-26 Thk Co Ltd Ball screw

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