JPH1137254A - Wear detection device of resin made transmission gear in straight line operation machine driving device - Google Patents
Wear detection device of resin made transmission gear in straight line operation machine driving deviceInfo
- Publication number
- JPH1137254A JPH1137254A JP19842697A JP19842697A JPH1137254A JP H1137254 A JPH1137254 A JP H1137254A JP 19842697 A JP19842697 A JP 19842697A JP 19842697 A JP19842697 A JP 19842697A JP H1137254 A JPH1137254 A JP H1137254A
- Authority
- JP
- Japan
- Prior art keywords
- transmission gear
- gear
- tooth
- resin made
- meshed
- 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.)
- Pending
Links
Landscapes
- Transmission Devices (AREA)
- Gears, Cams (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、被作動体を直線往
復移動させる直線作動機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear actuator for linearly reciprocating an actuated body.
【０００２】[0002]
【従来の技術】従来の一般的直線作動機は、図３に示す
如く、図示しない被作動体を先端部１に取付けた往復直
線移動する直線作動杆２の後端部には、内周面にねじ溝
を刻設したナット部材３が固定され、該ナット部材３の
外周は筒状ハウジング４の内周面の長手方向にスプライ
ン係合してナット部材３が回転不能で長手方向に移動自
在に取付けられている。2. Description of the Related Art As shown in FIG. 3, a conventional general linear actuator has an inner peripheral surface provided at the rear end of a linear operating rod 2 which reciprocates linearly with an actuated body (not shown) attached to a distal end 1 thereof. A nut member 3 having a thread groove formed therein is fixed, and the outer periphery of the nut member 3 is spline-engaged in the longitudinal direction of the inner peripheral surface of the cylindrical housing 4 so that the nut member 3 cannot rotate and can move in the longitudinal direction. Mounted on
【０００３】そして、筒状ハウジング４は機体５に固定
されている。前記ナット部材３の内周ねじ溝に螺合する
ねじ軸６の基端部には被動歯車７が固着され、該被動歯
車７は前記機体５に取付けたモータＭの出力軸の外周に
刻設した駆動噛合歯８に噛合する樹脂製伝動歯車９に噛
合している。したがって、モータＭの出力は出力軸の駆
動噛合歯８、伝動歯車９および被動歯車７を経てねじ軸
６を回転させる。[0003] The cylindrical housing 4 is fixed to the body 5. A driven gear 7 is fixed to a base end of a screw shaft 6 screwed into an inner peripheral thread groove of the nut member 3, and the driven gear 7 is engraved on an outer periphery of an output shaft of a motor M mounted on the machine body 5. The transmission gear 9 meshes with the driving mesh teeth 8. Therefore, the output of the motor M rotates the screw shaft 6 via the drive meshing teeth 8 of the output shaft, the transmission gear 9 and the driven gear 7.
【０００４】そして、回転するねじ軸６に螺合するナッ
ト部材３は筒状ハウジング４の内周面とのスプライン係
合により回転することなく直線移動し、ナット部材３と
一体の直線作動杆２を直線移動させて、その先端１に取
付けた被作動体を進退動させる。The nut member 3 screwed to the rotating screw shaft 6 moves linearly without rotation by spline engagement with the inner peripheral surface of the cylindrical housing 4, and moves linearly with the nut member 3. Is moved linearly, and the actuated body attached to the tip 1 is moved forward and backward.
【０００５】そして、前記伝動歯車９は駆動装置の静音
化のためジュラコン等の合成樹脂製とすることが一般的
に行なわれている。図３は、直線作動杆２を横置した取
付け状態を図示したが、立直方向に取付けた場合には、
直線作動杆２は昇降動し、被作動体を上昇、或は下降す
る。[0005] The transmission gear 9 is generally made of synthetic resin such as Duracon in order to reduce the noise of the driving device. FIG. 3 illustrates a state in which the linear operation rod 2 is mounted horizontally, but when the linear operation rod 2 is mounted vertically,
The linear operating rod 2 moves up and down to raise or lower the operated body.
【０００６】[0006]
【発明が解決しようとする課題】上述した従来技術にお
いて、伝動歯車を樹脂製とすることにより静音化が図ら
れる反面、伝動歯車の噛合歯の摩減量が多くなり、摩減
が促進されると噛合歯の折損するおそれが大きくなっ
て、万が一、折損事故が発生すると、駆動力の伝達が不
能になるばかりでなく、特に直線作動杆が立直方向に直
線移動するときは、被作動体の荷重が常に下方に向かっ
て負荷されているために被作動体が急激に落下して、大
事故を起す危険があった。In the above-mentioned prior art, the transmission gear is made of resin to reduce the noise, but on the other hand, the amount of wear of the meshing teeth of the transmission gear increases and the wear is promoted. The risk of breakage of the meshing teeth increases, and in the unlikely event of a breakage accident, not only will the transmission of driving force become impossible, but also the load on the actuated body, especially when the linear operating rod moves linearly in the vertical direction. However, there is a danger that the actuated body will fall suddenly because of the constant downward load, causing a major accident.
【０００７】[0007]
【課題を解決するための手段】そこで、本発明は、樹脂
製伝動歯車の側面に該樹脂製伝動歯車の歯厚より小なる
歯厚を有する金属製歯車板を同軸上に同位相で添着固定
することにより、前記課題を解決した。SUMMARY OF THE INVENTION Accordingly, the present invention provides a metal gear plate having a tooth thickness smaller than the tooth thickness of the resin transmission gear fixed on the side surface of the resin transmission gear coaxially and in phase. By doing so, the problem was solved.
【０００８】[0008]
【作用】樹脂製伝動歯車の噛合歯の歯面が噛合により摩
減消耗して歯厚が減少してくると、金属製歯車板の噛合
歯の歯面が樹脂製伝動歯車の噛合歯の歯面に露出して、
噛合音が金属音を発することにより、樹脂製伝動歯車の
噛合歯ま摩減状態が限界に達したことを検知する。When the tooth surfaces of the meshing teeth of the resin transmission gear are worn and worn due to meshing and the tooth thickness decreases, the tooth surfaces of the meshing teeth of the metal gear plate are changed to the meshing teeth of the resin transmission gear. Exposed on the surface,
When the meshing sound emits a metallic sound, it is detected that the state of friction between the meshing teeth of the resin transmission gear has reached a limit.
【０００９】[0009]
【実施例】図１は、本発明の一部断面による要部正面
図、図２は本発明の樹脂製伝動歯車の要部側面図であっ
て、図３と同一符号は同一部材を示す。樹脂製伝動歯車
９の側面には、樹脂製伝動歯車９の噛合歯の歯厚Ｔより
小なる歯厚ｔを有する金属製歯車板１０が同軸上に同位
相で添着されている。FIG. 1 is a front view of a main part according to a partial cross section of the present invention, and FIG. 2 is a side view of a main part of a resin transmission gear of the present invention. A metal gear plate 10 having a tooth thickness t smaller than the tooth thickness T of the meshing teeth of the resin transmission gear 9 is coaxially attached to the side surface of the resin transmission gear 9 in the same phase.
【００１０】したがって、樹脂製伝動歯車９の噛合歯が
噛合いによって摩減し、歯厚Ｔが減少して金属製歯車板
１０の歯厚ｔに近づくと、金属製歯車板１０の歯車が樹
脂製伝動歯車９の噛合歯の歯面に露出するので、モータ
ー出力軸外周面に形成した噛合歯８の歯面、或は被動歯
車７の噛合歯の歯面が金属製歯車板１０の前記露出した
金属歯面に噛合衝接して金属性噛合音を発し樹脂製伝動
歯車９の歯面が耐用限界まで摩減したことを検知する。
この検知音により樹脂製伝動歯車を交換し、再度直線作
動機を稼働させる。Therefore, when the meshing teeth of the resin transmission gear 9 are worn out by the meshing, and the tooth thickness T decreases and approaches the tooth thickness t of the metal gear plate 10, the gear of the metal gear plate 10 becomes resin. Since the tooth surfaces of the meshing teeth of the transmission gear 9 are exposed, the tooth surfaces of the meshing teeth 8 formed on the outer peripheral surface of the motor output shaft or the tooth surfaces of the meshing teeth of the driven gear 7 are exposed on the metal gear plate 10. The meshing and abutment is made on the metal tooth surface to generate a metal meshing sound, and it is detected that the tooth surface of the resin transmission gear 9 has been worn down to the service limit.
The resin transmission gear is replaced by this detection sound, and the linear actuator is operated again.
【００１１】[0011]
【発明の効果】本発明は、直線作動機の駆動装置内に静
音化のために組込まれた樹脂製伝動歯車の側面に該歯車
の歯厚より小さい歯厚を有する金属製歯車板を同軸上に
同位相で添付固定したので、樹脂製伝動歯車の歯厚が摩
減して減少すると、金属製歯車板の歯面が樹脂製伝動歯
車の歯面に露出するから、他の歯車の噛合歯との噛合衝
接時に金属性噛合音を発して警告するので、樹脂製伝動
歯車の噛合歯が摩減折損の大事故に到る以前に、該摩損
した樹脂製伝動歯車を交換することにより、大事故の発
生を予防し、安全な作業を確保することができ、さらに
駆動装置の静音化を達成しうるものである。According to the present invention, a metal gear plate having a tooth thickness smaller than the gear tooth thickness is coaxially mounted on a side surface of a resin transmission gear incorporated for noise reduction in a drive device of a linear actuator. When the tooth thickness of the resin transmission gear is reduced due to wear, the tooth surface of the metal gear plate is exposed on the tooth surface of the resin transmission gear. Since a warning is issued by generating a metallic meshing sound at the time of meshing and abutting with, by replacing the worn resin transmission gear before the meshing tooth of the resin transmission gear reaches a major accident of wear and breakage, A large accident can be prevented, safe work can be ensured, and the drive unit can be made quieter.
【図１】 本発明の一部断面による要部正面図。FIG. 1 is a front view of a main part according to a partial cross section of the present invention.
【図２】 本発明の樹脂製伝動歯車の要部側面図。FIG. 2 is a side view of a main part of the resin transmission gear of the present invention.
２ 直線作動杆 ６ ねじ軸 ７ 被動平歯車 ９ 樹脂製伝
動歯車 １０ 金属製歯車板 Ｔ，ｔ 歯厚2 Linear operating rod 6 Screw shaft 7 Driven spur gear 9 Resin transmission gear 10 Metal gear plate T, t Tooth thickness
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成９年１１月１１日[Submission date] November 11, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】発明の名称[Correction target item name] Name of invention
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【発明の名称】 直線作動機駆動装置における樹脂製伝
動歯車の摩減検知装置Apparatus for detecting wear of a resin transmission gear in a linear actuator drive device
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Correction target item name] Brief description of drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図面の簡単な説明】[Brief description of the drawings]
【図１】 本発明の一部断面による要部正面図。FIG. 1 is a front view of a main part according to a partial cross section of the present invention.
【図２】 本発明の樹脂製伝動歯車の要部側面図。FIG. 2 is a side view of a main part of the resin transmission gear of the present invention.
【図３】 従来の直線作動機の断面図。FIG. 3 is a sectional view of a conventional linear actuator.
Claims (1)
軸の回転駆動装置において、モータ出力軸上の駆動噛合
歯とねじ軸に固着した被動平歯車とに噛合する樹脂製伝
動歯車の側面に該樹脂製伝動歯車の歯厚より小なる歯厚
を有する金属製歯車板を同軸上に同位相で添着固定し
た、樹脂製伝動歯車の摩減検知装置。1. A rotary drive device of a screw shaft screwed to a linear operating rod of a linear operating machine, wherein a resin transmission gear meshed with a drive mesh tooth on a motor output shaft and a driven spur gear fixed to the screw shaft. A device for detecting wear of a resin transmission gear, wherein a metal gear plate having a tooth thickness smaller than the tooth thickness of the resin transmission gear is attached and fixed on the side surface in the same phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19842697A JPH1137254A (en) | 1997-07-24 | 1997-07-24 | Wear detection device of resin made transmission gear in straight line operation machine driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19842697A JPH1137254A (en) | 1997-07-24 | 1997-07-24 | Wear detection device of resin made transmission gear in straight line operation machine driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1137254A true JPH1137254A (en) | 1999-02-12 |
Family
ID=16390905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19842697A Pending JPH1137254A (en) | 1997-07-24 | 1997-07-24 | Wear detection device of resin made transmission gear in straight line operation machine driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1137254A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1505296A3 (en) * | 2003-08-04 | 2005-11-16 | Toyota Jidosha Kabushiki Kaisha | Starting apparatus for internal combustion engine |
-
1997
- 1997-07-24 JP JP19842697A patent/JPH1137254A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1505296A3 (en) * | 2003-08-04 | 2005-11-16 | Toyota Jidosha Kabushiki Kaisha | Starting apparatus for internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH07215227A (en) | Electrically operated power steering device | |
| WO2009125585A1 (en) | Cylinder device | |
| JPH1137254A (en) | Wear detection device of resin made transmission gear in straight line operation machine driving device | |
| JP2003065422A (en) | Gear, reduction gear mechanism and electric power steering device | |
| JP5472411B2 (en) | Electric tool | |
| CN2717611Y (en) | Lead-screw and semi-nut mechanism | |
| US3687069A (en) | Shut height counter drive for presses | |
| WO2008001460A1 (en) | Gear device | |
| EP0805004A1 (en) | Wrist mechanism for articulated robot | |
| US3885661A (en) | Printing head feeding mechanism for printers | |
| CN111379854A (en) | Parking locking system | |
| US4644835A (en) | Motor-driven circular saw | |
| JP4071080B2 (en) | Axis feeder | |
| CN208138361U (en) | Brake gap adjusts arm | |
| WO2007089039A1 (en) | Power tool | |
| US4009636A (en) | Hobbing machine | |
| JP2010084907A (en) | Gear device | |
| JPH1137245A (en) | Driving device for fixed position stop of straight line operation machine | |
| JPH11118023A (en) | Gear and gear pump | |
| JP3611038B2 (en) | Electric power steering device | |
| KR200421597Y1 (en) | Tool substitution of the machine tool spur gear assembly | |
| KR102078066B1 (en) | Apparatus for reducing gear noise | |
| US2396139A (en) | Machine tool table drive | |
| JP4973774B2 (en) | Worm reducer and electric power steering device | |
| US2669906A (en) | Gear shaper |