JP2004068961A

JP2004068961A - Method and device for setting and adjusting backlash of bevel gear or the like

Info

Publication number: JP2004068961A
Application number: JP2002230827A
Authority: JP
Inventors: Shogo Kato; 加藤　昭悟; Fumihiro Hattori; 服部　文弘
Original assignee: Kk AG; AG KK; ASANO GEAR CO Ltd
Current assignee: Kk AG; AG KK; ASANO GEAR CO Ltd
Priority date: 2002-08-08
Filing date: 2002-08-08
Publication date: 2004-03-04
Anticipated expiration: 2022-08-08
Also published as: JP3686054B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for setting and adjusting backlash of a bevel gear etc. capable of setting and adjusting backlash with high accuracy in a short time without damaging tooth flanks during a work. <P>SOLUTION: In this means, a pair of bevel gears constituted of pinions and gears etc. are provided, a moving constitution body 4 is moved by a feed screw 5 to relatively move the pinions or the gears in the axis directions of the gears, and backlash is set and adjusted. The moving constitution body 4 is advanced between a rear internal surface 4b and a rear surface 7b of a slidable member 7 of the moving constitution body 4 after making a gap G between the rear internal surface 4b and the rear surface 7b as zero once by a pressing means 9 and is further advanced from a state of tooth flanks in contact with each other. Gap amount at the time is read for every rotation angle of the gears, and a gap minimum value (GAPmin), etc. is obtained to perform a data processing function. By calculating proper adjusting amount based on the processing and retreating the moving constitution body 4 by the adjusting amount in a direction for generating backlash, the backlash is set and adjusted. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、かさ歯車等（ここでかさ歯車等とは、例えばベベルギヤやハイポイドギヤのようなかさ形をしたギヤをいう）のバックラッシュを設定・調整する方法、および装置に関するものである。より詳しくは、例えばラッピング盤や性能テスター等における一対のかさ歯車等間で、適正なバックラッシュを得るための設定・調整手段に係るものである。
【０００２】
【従来の技術】
上記ラッピング盤では、一対のかさ歯車等を互いに噛み合わせ擦り合わせることにより、ラッピング仕上げを行って歯車精度を高めている。また性能テスターでは、動きの伝達のために高精度で噛み合うかさ歯車等が用いられている。
【０００３】
その際に、前者では一対のかさ歯車等間に適正なバックラッシュが得られていないと、狙いどおりのラッピング品質が得られず、それで得られる一対の歯車間のギヤノイズや振動の原因になったり、焼き付きを生じたりするし、また後者では遊びがあるために、歯車を用いて計測や位置決めをする場合に高精度に行えなかったりする。
【０００４】
そこで、上記の噛み合った一対のかさ歯車等間には、大き過ぎず小さ過ぎず、適切なバックラッシュを設定・調整しておく必要がある。例えばラッピング盤では、ラッピング仕上げに先立って上記一対のかさ歯車等を、予め設定されたバックラッシュとなる位置に保持して、その位置で噛み合い回転させながら、一連のラッピング仕上げを行っている。
【０００５】
かさ歯車等のギヤとピニオンとの噛み合いで、バックラッシュを設定・調整するのに従来は、ギヤ軸または／およびピニオン軸を軸方向へ移動させることで行っている。
【０００６】
具体例としては、ピニオンとギヤとからなる一対のかさ歯車等をもつラッピング盤において、例えば本発明に関する図１で示したものと同様に、ピニオンまたはギヤをギヤの軸線方向へ相対位置を調節する送りネジ、それに螺合したナット部と、該ナット部と共に移動してギヤまたはピニオンを押圧する移動構成体とで構成し、送りネジを回転させて歯車対の歯面を押し付けるようにしてある。そして、その際のモータの電流値が予め定めた値になるときの移動構成体の位置を読み取り、その位置からバックラッシュ目標値／Ｋの値だけ送りネジを逆方向へ送ってバックラッシュを設定している（上記で、Ｋはギヤの用途や大きさ等に応じ予め判明しているギャップ量に対するバックラッシュへの換算係数を示す）。
【０００７】
またより正確にするために、ギヤとピニオンの回転位置を数箇所変えて同様に移動構成体の位置を求め、平均位置または最小位置に対して同様にバックラッシュを設定している場合が多い。
【０００８】
【発明が解決しようとする課題】
ところが、上記従来の傘歯車等のバックラッシュ設定・調整手段では、次のような問題点があった。
イ．送りネジ回転用のモータの電流で歯面の接触を検出するものであるため、送りネジとナット部との摩擦状態にバラつきがあると、歯面を押しつける荷重にバラつきが生じることになり、その結果移動構成体の位置もバラついてバックラッシュに差異が生じた。
【０００９】
ロ．モータの電流設定値を安定化するためには、電流値に一定量の大きさが必要となるので、その結果歯面間の面圧が過大になって歯面を損傷するおそれがあった。
【００１０】
ハ．上記でギヤとピニオンの回転位置を数箇所変えて測定をする場合には、バックラッシュの設定・調節作業に長時間を要した（目標時間は５秒程度であるが３０秒を越えることになる）。
【００１１】
本発明は、上記従来の傘歯車等のバックラッシュ設定・調整手段が有する問題点の解消を課題としたものである。即ち本発明の目的は、作業中に歯面を損傷するおそれもなく、短時間でしかも高精度に、傘歯車等のバックラッシュ設定・調整する手段を提供することにある。
【００１２】
【課題を解決するための手段】
Ａ　本発明に係るかさ歯車等のバックラッシュの設定・調整方法は、
ピニオン１とギヤ２とからなる一対のかさ歯車等をもつ装置で、送りネジ手段３により移動構成体４が移動して、ピニオン１またはギヤ２をギヤ２の軸線Ｘの方向へ相対的に移動させ、かさ歯車等のバックラッシュを設定・調整する方法において、
▲１▼ピニオン１とギヤ２の間にバックラッシュが存在する状態下で、移動構成体４内でナット部６に套合した可摺動部材７の後面７ｂと、移動構成体４の後内面４ｂとの間のギャップ量を０とし、
▲２▼送りネジ５により移動構成体４を前方へ移動させて、ピニオン１とギヤ２の歯面同士が密着した状態にした後に、さらに移動構成体４を前方へ移動させて、上記可摺動部材７の後面７ｂと移動構成体４の後内面４ｂとの間にギャップＧを生じさせ、
▲４▼そのギャップ量が予め定めた値に達した段階で、送りネジ５の回転を停止させて、その状態下で、ピニオン１またはギヤ２の一方に回転を与えながら、一定回転角毎にギャップ量を読み取り、
▲５▼上記から、ギャップ最小値（ＧＡＰｍｉｎ）、ギャップ最大値（ＧＡＰｍａｘ）、ギャップ最小値と最大値の差（ＧＡＰｖａｒ）、ギャップ平均値（ＧＡＰａｖｅ）、停止位置ギャップ値（ＧＡＰｏ）のいずれか１つ、または２つ以上を得てデータ処理機能を行い（例えば図６参照）、それに基づき適正な調整量を算出して、バックラッシュを設定・調整するようにしたものである。
【００１３】
Ｂ　本発明に係るかさ歯車等のバックラッシュの設定・調整装置は、
ピニオン１とギヤ２とからなる一対のかさ歯車等をもつ装置であって、送りネジ手段３により移動構成体４が移動して、ピニオン１またはギヤ２をギヤ２の軸線Ｘの方向へ相対的に移動させて、かさ歯車等のバックラッシュを設定・調整する装置において、
上記移動構成体４内で送りネジ５に螺合したナット部６に、前方へ共に移動可能に係止された可摺動部材７を套合させ、該可摺動部材７の後面７ｂと移動構成体４の後内面４ｂとの間に生じるギャップＧを計測するギャップセンサ８を設けると共に、可摺動部材７と移動構成体４との間に、上記ギャップＧを０にする方向へ押圧可能な押圧手段９を設け、かつ移動構成体４と可摺動部材７との間に、所定のギャップ量の状態時に両者４，７間を固定可能な固定手段１０を設けたものである。
【００１４】
【発明の実施の形態】
上記構成において、前方とは、両歯面間にバックラッシュが無くなるようにピニオン１またはギヤ２を前進させる方向で、前面とはその側の面を指し、また後方とは、歯面が当接した位置からバックラッシュが生じるようにピニオン１またはギヤ２を後退させる方向で、後面とはその側の面をいう。
【００１５】
１）上記Ａの設定・調整方法で求めたギャップ最小値と最大値の差（ＧＡＰｖａｒ）は、ギヤの用途や大きさ等に応じ予め判明しているギャップ量に対するバックラッシュへの換算係数Ｋを乗じて、その値を予め記憶させておいたバックラッシュの変動値の限界値と比較処理させる。
【００１６】
そして、同値〔ギャップの最小値と最大値の差（ＧＡＰｖａｒ）に換算係数Ｋを乗じた値〕が上記限界値を越えた際には、その事実を表示盤上または記録紙上に表示させるようにして、バックラッシュの限界値を越えた場合に修正・調整を行えるようにしている。
【００１７】
２）また上記Ａの設定・調整方法で求めたギャップ平均値（ＧＡＰａｖｅ）と停止位置ギャップ値（ＧＡＰｏ）は、上記と同じギャップ量に対するバックラッシュへの換算係数Ｋ、およびギヤの用途や大きさ等に応じて予め記憶させておいたバックラッシュ設定目標値とにより、次の式で調整量Ｂ１　を算出する。
〔調整量Ｂ１　＝停止位置ギャップ値（ＧＡＰｏ）−ギャップ平均値（ＧＡＰａｖｅ）＋バックラッシュ目標値／Ｋ〕　　式〔１〕
【００１８】
そして、可摺動部材７　と一体化させた状態の移動構成体４を、この調整量Ｂ１の分だけバックラッシュを生む方向へ後退させることにより、所望の目標値に近いバックラッシュに設定・調整するようにしておく。
【００１９】
３）さらに上記Ａの設定・調整方法で求めたギャップ最小値（ＧＡＰｍｉｎ）を、上記２）の式〔１〕におけるギャップ平均値（ＧＡＰａｖｅ）の代わりに使用してもよい。これは、ギャップ最小値（ＧＡＰｍｉｎ）に基づいて調整量Ｂ２を算出し、可摺動部材７と一体化させた移動構成体４を、この調整量Ｂ２　の分だけバックラッシュを生む方向へ後退させることにより、バックラッシュを目標値に近いものに設定・調整するものである。
【００２０】
４）そして、上記２）の式〔１〕におけるギャップ平均値（ＧＡＰａｖｅ）の代わりに、次の式〔２〕で求められる値を使用してもよい。
〔ギャップ平均値（ＧＡＰａｖｅ）−Ｙ×〔ギャップ平均値（ＧＡＰａｖｅ）−ギャップ最小値（ＧＡＰｍｉｎ）〕，但し、０＜Ｙ＜１とする。　式〔２〕
【００２１】
これは、上記２）でギャップ平均値（ＧＡＰａｖｅ）に基づいて算出した調整量Ｂ１　と、上記３）でギャップの最小値（ＧＡＰｍｉｎ）に基づいて算出した調整量Ｂ２　との中間の値として調整量Ｂ３　を算出し、この調整量Ｂ３　の分だけ移動構成体４をバックラッシュを生む方向へ後退させて、バックラッシュを目標値に近いものに設定・調整しようとするものである。なお上記Ｙの値は、具体的には０＜Ｙ＜１の範囲で任意にコンピュータへ入力可能としておけばよい。
【００２２】
上記設定・調整方法を実施するために使用する装置は、例えばラッピング盤や性能テスター等の如くピニオン１とギヤ２とからなる一対のかさ歯車等をもつ装置であって、送りネジ手段３により移動構成体４が移動して、ピニオン１またはギヤ２をギヤ２の軸線Ｘの方向へ相対的に移動させて、バックラッシュの設定・調整を行うようにしてある。
【００２３】
即ち、送りネジ手段３により移動可能な移動構成体４の内部では、送りネジ５に螺合したナット部６（例えばボールネジ）に可摺動部材７を套合させてあり、該可摺動部材７は前方へは摺動可能で後方へはナット部６に係止されている。該可摺動部材７の後面７ｂと移動構成体４の後内面ａとの間にギャップＧが生じるので、そのギャップＧを計測するギャップセンサ８を設けてあり、解析手段へデータを送るようにしてある。
【００２４】
また上記可摺動部材７と移動構成体４の前内面４ａとの間には、上記ギャップＧを０にするように押圧可能な押圧手段９を設けてある。該押圧手段９は、例えばコイル状バネを用いたり（例えば図３参照）、空圧または油圧シリンダを用いたり（例えば図５参照）すればよい。
【００２５】
そして、上記移動構成体４と可摺動部材７との間には、所定のギャップ量の状態時に両者４，７間を固定可能に、例えば空圧または油圧式の固定手段１０を設けてある。図において、１１は送りネジ回転用のモータ、１２はガイドレールを示す。
【００２６】
本発明に係るかさ歯車等のバックラッシュの設定・調整方法、および装置を使用する場合は、上記構造の装置により移動構成体４の後内面４ｂと可摺動部材７の後面７ｂとの間のギャップ量を、ギヤ２の一定回転角毎に読み取って、上記ギャップ最小値（ＧＡＰｍｉｎ）等を得てデータ処理機能を行い、それに基づき上記の如く適正な調整量Ｂを算出して、所望のバックラッシュの設定・調整を行えばよい。
【００２７】
上記本発明に係るバックラッシュの設定・調整手段は、上記のように、可摺動部材７と移動構成体４の前内面４ａとの間に、上記ギャップＧを０にする方向に押圧可能な押圧手段９を設けた構成になっており、従来のような送りネジで移動構成体を直接に移動させて、歯車対の歯面に押しつけるものではない。
【００２８】
そのため、従来のものと異なり、送りネジ５とナット部６間の摩擦状態のバラつきで、歯面を押し付ける荷重もバラついて、移動構成体４の位置がバラついたり、また過大な力が加わって歯車対にたわみが生じたりしないから、バックラッシュに差異が生じること無く、常に適正なバックラッシュを設定・調節することが可能となる。
【００２９】
また従来のものと異なり、モータの電流設定値を安定化させるのに電流値に一定量の大きさを必要とするようなことがないと共に、モータの負荷トルクが一定の設定値になるまで移動構成体を歯車対に押し付けたりしないから、歯面間の面圧が過大になって歯面を損傷するようなおそれも無い。
【００３０】
さらに従来のやり方と異なり、ギャップセンサ８で検出したギャップ量が予め設定した値に達したところで送りネジ５の回転を止め、この状態でピニオン１またはギヤ２の一方から回転を与えつつ一定回転角毎にギャップ量を読み取っていくものである。
【００３１】
そのため、従来のように送りネジ回転用のモータの電流値が予め定めた値になる時の移動構成体の位置を読み取り、それを数箇所で行うものではなく、回転させながら計測するものであるから、数箇所で測定を行う場合も短時間で処理できて、目標時間内で処理が可能となる。
【００３２】
【実施例】
図１ないし図５は、本発明に係るかさ歯車等のバックラッシュの設定・調整方法を実施するための装置を示し、図６はギャップ量解析法の一例を示すものである。
【００３３】
まず図１は、一対のピニオン１とギヤ２からなるかさ歯車等のバックラッシュの設定・調整装置で、送りネジ手段３によりピニオン１側がギヤ２の軸線Ｘの方向へ移動して相対位置を調整する装置を示している。
【００３４】
即ち、ピニオン１側は、ピニオンヘッド１３に可回転に軸支されたスピンドル１４にピニオン１が軸装されており、ピニオン回転用のモータ１５で回転するとともに、該ピニオンヘッド１３が後記送りネジ手段３によりギヤ２の軸線Ｘの方向へ移動可能としてある。他方のギヤ２側は、ギヤ２がギヤヘッド１６に可回転に軸支されたスピニドル（図示略）に軸装されており、その軸線Ｘの方向への移動はない。
【００３５】
送りネジ手段３は、図３・図４で示す如く、送りネジ５に螺合されたナット部６の移動に伴ってヘッド移動構成体４が移動可能となっており、該移動構成体４が上記ピニオンヘッド１３に固着され、ピニオン１がギヤ２の軸線Ｘの方向へ移動可能となる。
【００３６】
上記移動構成体４内には、その前・後壁の孔１７，１８を貫通する如くにギヤ２の軸線Ｘの方向と平行状に送りネジ５が横設してあり、該送りネジ５にはナット部５が螺合させてあるが、該ナット部５の後部端寄りに鍔部１９を形成してあり、後記可摺動部材７の後面７ｂを係止している。
【００３７】
上記ナット部５には、その筒状部分に可摺動部材７を套合させてあり、該可摺動部材７の後面７ｂの一部が上記ナット部６の鍔部１９で係止され、ナット部６が前方向即ちバックラッシュを無くす方向へ移動する際に、該可摺動部材７も同時に前方向へ移動可能としてある。
【００３８】
また該可摺動部材７には、移動構成体４の前内面４ａとの間で、押圧手段９としてここではコイル状バネを周方向へ複数個を等間隔状に設けてある。押圧手段９としてのコイル状バネは、移動構成体４の前内面４ａを前方向へ押圧することにより、該移動構成体４の後内面４ｂと可摺動部材７の後面７ｂとの間のギャップＧを０にする方向に付勢させてある。なおこの押圧手段９は図５で示すような空圧または油圧式のシリンダを用いてもよい。
【００３９】
上記移動構成体４の後内壁には、後内面４ｂと可摺動部材７の後面７ｂとの間に生じるギャップ量を計測するギャップセンサ８を設けてあり、別に設けた解析処理装置（図示略）へ接続させてある。
【００４０】
また移動構成体４の内周壁と可摺動部材７の外周面との間には、両者４，７の軸線方向への移動を掛止するために、ここでは空圧式の固定手段１０を設けてある。
【００４１】
次に、図５は、一対のピニオン１とギヤ２からなるかさ歯車で、ギヤ２側がギヤ２の軸線Ｘの方向へ移動して相対位置を調整する送りネジ手段をもつ装置を示している。
【００４２】
即ち、ギヤ２側は、ギヤ２がスピンドル（図示略）を介してギヤヘッド１６に可回転に軸支されているが、該ギヤヘッド１６は後記送りネジ手段３によりギヤ２の軸線Ｘの方向へ移動可能としてある。他方、ピニオン１側は、ピニオンヘッド１３にスピンドル１４を介してピニオン１が可回転に軸支されて、ピニオン回転モータ１５で回転するが、ギヤ２の軸線Ｘの方向へ移動はしない。
【００４３】
送りネジ手段３は、送りネジ５に螺合されたナット部６の移動に伴って移動するヘッド移動構成体４が固着されており、該移動構成体４の移動によりギヤヘッド１４・ギヤ２がギヤ２の軸線Ｘの方向へ移動可能としてある。
【００４４】
上記移動構成体４内には、その前・後壁の孔１７，１８を貫通する如くにギヤ２の軸線Ｘの方向と平行状に送りネジ５を横設してあり、該送りネジ５にはナット部５が螺合させてあるが、該ナット部５の後部端寄りに鍔部１９を形成してある。
【００４５】
上記ナット部５に、その筒状部分に可摺動部材７を套合させてあり、該可摺動部材７の後面７ｂの一部が上記ナット部６の鍔部１９で係止され、ナット部６が前方向即ちバックラッシュを無くす方向へ移動する際に、該可摺動部材７も同時に前方向へ移動可能としてある。
【００４６】
また該可摺動部材７内には、移動構成体４の前内面４ａとの間で、押圧手段としてここでは空圧式の押圧手段９を設けてある。この空圧式の押圧手段９としては、可摺動部材７の前面から凹所２０を環状に形成してシリンダとし、そこに移動構成体４の前内面４ａから環状の凸部２１をピストンとして係合させてある。
【００４７】
上記シリンダ内には可摺動部材７の後部から空気を注入可能としてあり、ピストン２１を前方へ押すことにより、移動構成体４を前方向へ押圧し、可摺動部材７の後面７ｂと移動構成体４の後内面４ｂ間のギャップＧが０になるようにしてある。なおこの押圧手段９に、上記コイル式バネを用いてもよい。
【００４８】
他は上記実施例と同様であり、上記移動構成体４の後内壁には、後内面４ｂと可摺動部材７の後面７ｂ間に生じるギャップ量を計測するギャップセンサ８を設けて、別に設けた解析装置（図示略）へ接続させてある。また移動構成体４の内周壁と可摺動部材７の外周面との間には、両者４，７の軸線方向への移動を掛止するために、ここでは空圧式の固定手段１０を設けてある。
【００４９】
上記いずれの装置も、その作動状態およびそれを用いたバックラッシュの設定・調節は、次のように行えばよい。
上記ピニオン１とギヤ２の間にバックラッシュが存在する状態下で、固定手段１０の固定を解除しておく。これにより、例えば図３のように、押圧手段９の押圧力で移動構成体４が前内面４ａを前方へ押圧されるから、その後内面４ｂと可摺動部材７の後面７ｂ間のギャップＧが無くなってギャップ量が０になる。
【００５０】
次いで送りネジ用モータ１１により送りネジ５を回転させて、ナット部６・可摺動用部材７・押圧手段９を介して移動構成体４を前方即ちバックラッシュが０になる方向へ移動させる。これで、ピニオン１とギヤ２の歯面同士が密着した状態となるが、さらに送りネジ５を回転させると、押圧手段９の押圧力に抗して可摺動部材７がさらに前方へ移動するから、その後面７ｂと移動構成体４の後内面４ｂとの間にギャップＧが生じる。
【００５１】
そのギャップ量をギャップセンサ８で検出して、ギャップ量が予め定めた値に達したところで、送りネジ５の回転を停止させる。その状態下でピニオン１またはギヤ２の一方に回転を与えながら、一定回転角毎にギャップ量を読み取り、そこからギャップ最小値（ＧＡＰｍｉｎ）、ギャップ最大値（ＧＡＰｍａｘ）、ギャップ最小値と最大値の差（ＧＡＰｖａｒ）、ギャップ平均値（ＧＡＰａｖｅ）、停止位置ギャップ値（ＧＡＰｏ）のいずれか１つまたは２つ以上を得て、データ処理を機能を行う（図６参照）。
【００５２】
上記で得たデータに加えて、ギャップ量に対するバックラッシュへの換算係数Ｋ、およびギヤの用途や大きさ等に応じて決まるバックラッシュ設定目標値とから、ここでは次の式で調整量Ｂ１　を算出する。
〔調整量Ｂ１　＝停止位置ギャップ値（ＧＡＰｏ）−ギャップ平均値（ＧＡＰａｖｅ）＋バックラッシュ目標値／Ｋ〕
【００５３】
そして、固定手段１０で可摺動部材７と一体化させた移動構成体４を、この調整量Ｂ１　の分だけバックラッシュを生む方向へ後退させることにより、目標値に近い所望のバックラッシュに設定・調整される。
なお、上記調整量Ｂ１　に限らず、別途算出した上記調整量Ｂ２　やＢ３　等によってもよいことは、上記のとおりである。
【００５４】
【発明の効果】
以上で明らかなように、本発明に係るかさ歯車等のバックラッシュの設定・調整方法および装置は、作業中に歯面を損傷するおそれもなく、短時間でかつ高精度に、かさ歯車等のバックラッシュを設定・調整することができる。
【００５５】
即ち、従来のこの種の手段は、送りネジで移動構成体を直接に移動させて歯車対の歯面を押しつけ、送りネジ回転用のモータの電流で歯面の接触を検出するものであった。そのため、送りネジとナット部間の摩擦状態にバラつきが有ると、歯面を押しつける荷重にバラつきが生じ、移動構成体の位置にバラつきが生じたり、モータの電流設定値を安定化させるのに電流値に一定量の大きさを必要としたり、歯面間の面圧が過大になって歯面を損傷したり、数箇所で測定を行うには長時間を要したりした。
【００５６】
しかし本発明に係るかさ歯車等のバックラッシュの設定・調整方法および装置では、上記の如く、移動構成体の後内面と可摺動部材の後面との間のギャップ量をギヤの一定回転毎に読み取り、ギャップの最小値（ＧＡＰｍｉｎ）等を得てデータ処理機能を行い、それに基づき適正な調整量を算出して、可摺動部材と一体化させた状態の移動構成体を、この調整量だけバックラッシュを生む方向へ後退させることにより、目標値に近い所望のバックラッシュに設定・調整するようにしてある。
【００５７】
そのため、イ）従来手段の送りネジで移動構成体を直接に移動させて歯車対の歯面に押しつけるものと異なり、上記ギャップを０にする方向に押圧可能な押圧手段を介した構成になっているから、送りネジとナット部間の摩擦状態のバラつきで移動構成体の位置がバラつくようなことが無くなり、また過大な力が加わって歯車対にたわみが生じたりしない。その結果、バックラッシュに差異が生じたりせずに適正なバックラッシュに設定・調節することができる。
【００５８】
ロ）また従来手段と異なり、送りモータ回転用モータの電流設定値を安定化させるのに電流値に一定量の大きさを必要とするようなことが無いと共に、モータの負荷トルクが一定の設定値になるまで移動構成体を歯車対に押し付けたりしないから、歯面間の面圧が過大になって歯面を損傷するようなおそれを無くすことができる。
【００５９】
ハ）さらに従来手段と異なり、ギャップセンサで検出したギャップ量が予め設定した値に達したところで送りネジの回転を止め、この状態でピニオンまたはギヤの一方から回転を与えつつ一定回転角毎にギャップ量を読み取っていくものである。従来のように、送りネジ回転用のモータの電流値が予め定めた値になる時の移動構成体の位置を読み取り、それを数箇所で行うものではなく、回転させながら計測するものであるから、数箇所で測定を行う場合も短時間で処理でき、目標時間内で処理することができる。
【図面の簡単な説明】
【図１】本発明に係るかさ歯車等のバックラッシュの設定・調整方法を実施するための装置の実施例で、ピニオン側を移動させるものの平面図である。
【図２】本発明に係るかさ歯車等のバックラッシュの設定・調整方法を実施するための装置の実施例で、ギヤ側を移動させるものの平面図である。
【図３】図１で示したものの要部で、ギャップを０にした際の縦断正面図である。
【図４】図１で示したものの要部で、ギャップが生じた際の縦断正面図である。
【図５】図２で示したものの要部で、ギャップが生じた際の縦断正面図である。
【図６】ギャップ量解析法の一例を示す図である。
【符号の説明】
１−ピニオン
２−ギヤ
３−送りネジ手段
４−移動構成体
４ａ−前内面
４ｂ−後内面
５−送りネジ
６−ナット部
７−可摺動部材
７ｂ−後面
８−ギャップセンサ
９−押圧手段
１０−固定手段
１１−モータ
１２−ガイドレール
１３−ピニオンヘッド
１４−スピンドル
１５−モータ
１６−ギヤヘッド
１７−孔
１８−孔
１９−鍔部
２０−凹所
２１−ピストン
Ｘ−軸線
Ｇ−ギャップ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and an apparatus for setting and adjusting the backlash of a bevel gear or the like (here, a bevel gear or the like means a bevel gear or a hypoid gear). More specifically, the present invention relates to a setting / adjusting means for obtaining an appropriate backlash between a pair of bevel gears or the like in a lapping machine, a performance tester, or the like.
[0002]
[Prior art]
In the lapping machine, a pair of bevel gears and the like are meshed with each other and rubbed with each other to perform lapping finishing to improve gear accuracy. In a performance tester, a bevel gear or the like that meshes with high precision is used for transmitting motion.
[0003]
At that time, if the proper backlash is not obtained between the pair of bevel gears in the former, the desired lapping quality will not be obtained, which may cause gear noise and vibration between the pair of gears. In addition, burn-in occurs, and the latter has play, so that measurement or positioning using gears cannot be performed with high accuracy.
[0004]
Therefore, it is necessary to set and adjust an appropriate backlash between the pair of meshed bevel gears and the like, which is not too large or too small. For example, in a lapping machine, prior to lapping, a pair of bevel gears and the like are held at a predetermined backlash position, and a series of lapping is performed while meshing and rotating at that position.
[0005]
Conventionally, setting and adjusting the backlash by meshing a gear such as a bevel gear with a pinion is performed by moving a gear shaft and / or a pinion shaft in the axial direction.
[0006]
As a specific example, in a lapping machine having a pair of bevel gears composed of a pinion and a gear, the relative position of the pinion or the gear is adjusted in the axial direction of the gear, for example, as shown in FIG. It comprises a feed screw, a nut screwed to the feed screw, and a moving component that moves together with the nut and presses the gear or pinion. The feed screw is rotated to press the tooth surface of the gear pair. Then, the position of the moving component when the current value of the motor reaches a predetermined value at that time is read, and the feed screw is fed from the position by the value of the backlash target value / K in the reverse direction to set the backlash. (In the above, K indicates a conversion coefficient for backlash with respect to the gap amount that is known in advance according to the use and size of the gear, etc.).
[0007]
In addition, in order to further increase the accuracy, the position of the moving component is similarly obtained by changing the rotational positions of the gear and the pinion at several places, and the backlash is similarly set for the average position or the minimum position.
[0008]
[Problems to be solved by the invention]
However, the above-described conventional backlash setting / adjusting means such as a bevel gear has the following problems.
I. Since the contact of the tooth surface is detected by the current of the motor for rotating the feed screw, if the friction between the feed screw and the nut part varies, the load pressing the tooth surface will vary, As a result, the positions of the moving components also varied, resulting in differences in backlash.
[0009]
B. In order to stabilize the set current value of the motor, a certain amount of current value is required. As a result, the surface pressure between the tooth surfaces becomes excessively large, and the tooth surfaces may be damaged.
[0010]
C. When the measurement is performed by changing the rotational positions of the gear and the pinion at several places as described above, it takes a long time to set and adjust the backlash (the target time is about 5 seconds but exceeds 30 seconds). ).
[0011]
SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the conventional backlash setting / adjusting means such as a bevel gear. That is, an object of the present invention is to provide a means for setting and adjusting a backlash of a bevel gear or the like in a short time and with high accuracy without fear of damaging the tooth surface during operation.
[0012]
[Means for Solving the Problems]
A The method for setting and adjusting the backlash of a bevel gear or the like according to the present invention is as follows.
A device having a pair of bevel gears composed of a pinion 1 and a gear 2 and the like. The moving member 4 is moved by a feed screw means 3 to relatively move the pinion 1 or the gear 2 in the direction of the axis X of the gear 2. In the method of setting and adjusting the backlash of bevel gears,
{Circle around (1)} In a state where a backlash exists between the pinion 1 and the gear 2, a rear surface 7 b of the slidable member 7 engaged with the nut portion 6 in the moving member 4, and a rear inner surface of the moving member 4 4b is assumed to be 0,
(2) The moving member 4 is moved forward by the feed screw 5 so that the tooth surfaces of the pinion 1 and the gear 2 are in close contact with each other. A gap G is created between the rear surface 7b of the moving member 7 and the rear inner surface 4b of the moving structure 4,
{Circle around (4)} When the gap amount reaches a predetermined value, the rotation of the feed screw 5 is stopped, and in this state, while rotating one of the pinion 1 and the gear 2, the rotation of the feed screw 5 is performed at a constant rotation angle. Read the gap amount,
(5) From the above, any one of the gap minimum value (GAPmin), the gap maximum value (GAPmax), the difference between the gap minimum value and the maximum value (GAPvar), the gap average value (GAPave), and the stop position gap value (GAPo) One or two or more are obtained to perform a data processing function (see, for example, FIG. 6), and an appropriate adjustment amount is calculated based thereon to set and adjust the backlash.
[0013]
B The device for setting and adjusting the backlash of a bevel gear or the like according to the present invention includes:
An apparatus having a pair of bevel gears and the like composed of a pinion 1 and a gear 2, wherein a moving member 4 is moved by a feed screw means 3 to relatively move the pinion 1 or the gear 2 in the direction of the axis X of the gear 2. To adjust the backlash of bevel gears, etc.
A slidable member 7 locked movably forward is engaged with a nut portion 6 screwed to the feed screw 5 in the moving member 4, and moves with the rear surface 7b of the slidable member 7. A gap sensor 8 is provided for measuring a gap G generated between the component 4 and the rear inner surface 4b, and the gap G can be pressed between the slidable member 7 and the movable component 4 in the direction of setting the gap G to zero. A simple pressing means 9 is provided, and a fixing means 10 is provided between the movable component 4 and the slidable member 7 so as to fix the gap between the moving member 4 and the slidable member 7 when a predetermined gap amount is provided.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
In the above configuration, “front” refers to a direction in which the pinion 1 or the gear 2 is advanced so that there is no backlash between the two tooth surfaces, and “front” refers to the surface on that side. In the direction in which the pinion 1 or the gear 2 is retracted so as to cause backlash from the set position, the rear surface refers to the surface on that side.
[0015]
1) The difference (GAPvar) between the gap minimum value and the maximum value obtained by the setting / adjustment method of the above A is the conversion coefficient K to the backlash with respect to the gap amount known in advance according to the use and size of the gear. The value is multiplied and compared with a previously stored limit value of the fluctuation value of the backlash.
[0016]
When the same value [the value obtained by multiplying the difference (GAPvar) between the minimum value and the maximum value of the gap by the conversion coefficient K] exceeds the above limit value, the fact is displayed on a display panel or a recording paper. Thus, when the backlash exceeds the limit value, correction and adjustment can be performed.
[0017]
2) Further, the gap average value (GAPave) and the stop position gap value (GAPo) obtained by the setting / adjustment method of the above A are a conversion coefficient K to the backlash for the same gap amount as described above, and the use and size of the gear. Then, the adjustment amount B1 is calculated by the following equation using the backlash setting target value stored in advance according to the above equation.
[Adjustment amount B1 = stop position gap value (GAPo) -gap average value (GAPave) + backlash target value / K] Expression [1]
[0018]
Then, the moving component 4 integrated with the slidable member 7 is set back and adjusted to a backlash close to a desired target value by retreating the moving component 4 in the direction of producing the backlash by the adjustment amount B1. Keep it.
[0019]
3) Further, the minimum gap value (GAPmin) obtained by the setting / adjustment method of the above A may be used instead of the average gap value (GAPave) in the equation [1] of the above 2). In other words, the adjustment amount B2 is calculated based on the minimum gap value (GAPmin), and the moving component 4 integrated with the slidable member 7 is moved backward in the direction that causes backlash by the adjustment amount B2. Thus, the backlash is set and adjusted to a value close to the target value.
[0020]
4) Then, instead of the average gap value (GAPave) in the equation [1] of the above 2), a value obtained by the following equation [2] may be used.
[Gap average value (GAPave) −Y × [Gap average value (GAPave) −Gap minimum value (GAPmin)], provided that 0 <Y <1. Equation [2]
[0021]
This is an adjustment amount as an intermediate value between the adjustment amount B1 calculated based on the gap average value (GAPave) in the above 2) and the adjustment amount B2 calculated based on the minimum gap value (GAPmin) in the above 3). B3 is calculated, and the moving component 4 is moved backward in the direction of producing the backlash by the amount of the adjustment B3 to set and adjust the backlash to a value close to the target value. The value of Y may be arbitrarily input to the computer within the range of 0 <Y <1.
[0022]
The device used for carrying out the above setting / adjustment method is a device having a pair of bevel gears including a pinion 1 and a gear 2 such as a lapping machine and a performance tester. The structure 4 moves to relatively move the pinion 1 or the gear 2 in the direction of the axis X of the gear 2 to set and adjust the backlash.
[0023]
That is, inside the movable structure 4 movable by the feed screw means 3, a slidable member 7 is engaged with a nut portion 6 (for example, a ball screw) screwed to the feed screw 5, and the slidable member 7 is engaged. Numeral 7 is slidable forward and locked to the nut 6 rearward. Since a gap G is formed between the rear surface 7b of the slidable member 7 and the rear inner surface a of the movable structure 4, a gap sensor 8 for measuring the gap G is provided, and data is sent to analysis means. It is.
[0024]
Pressing means 9 is provided between the slidable member 7 and the front inner surface 4a of the moving member 4 so as to press the gap G to zero. The pressing means 9 may use, for example, a coiled spring (for example, see FIG. 3) or a pneumatic or hydraulic cylinder (for example, see FIG. 5).
[0025]
Further, between the moving member 4 and the slidable member 7, for example, a pneumatic or hydraulic fixing means 10 is provided so that the members 4 and 7 can be fixed in a state of a predetermined gap amount. . In the figure, reference numeral 11 denotes a motor for rotating a feed screw, and reference numeral 12 denotes a guide rail.
[0026]
When the method and the device for setting and adjusting the backlash of the bevel gear and the like according to the present invention are used, the device having the above-described structure is used to adjust the distance between the rear inner surface 4b of the movable structure 4 and the rear surface 7b of the slidable member 7. The gap amount is read at every constant rotation angle of the gear 2, the minimum gap value (GAPmin) or the like is obtained, and the data processing function is performed. Rush settings and adjustments should be made.
[0027]
As described above, the backlash setting / adjusting means according to the present invention can press the gap G between the slidable member 7 and the front inner surface 4a of the moving member 4 in the direction of setting the gap G to zero. Since the pressing means 9 is provided, the moving member is not directly moved by the feed screw and pressed against the tooth surface of the gear pair as in the related art.
[0028]
Therefore, unlike the conventional one, the load pressing the tooth surface also varies due to the variation in the frictional state between the feed screw 5 and the nut portion 6, and the position of the moving component 4 varies, or an excessive force is applied. Since no deflection occurs in the gear pair, it is possible to always set and adjust an appropriate backlash without causing a difference in backlash.
[0029]
Also, unlike the conventional one, the current value does not require a certain amount of magnitude to stabilize the motor current set value, and the motor moves until the load torque of the motor reaches a certain set value. Since the structure is not pressed against the gear pair, there is no possibility that the surface pressure between the tooth surfaces becomes excessive and the tooth surfaces are damaged.
[0030]
Further, unlike the conventional method, when the gap amount detected by the gap sensor 8 reaches a preset value, the rotation of the feed screw 5 is stopped, and in this state, the rotation is given from one of the pinion 1 and the gear 2 while a constant rotation angle is given. The gap amount is read every time.
[0031]
Therefore, the position of the moving component when the current value of the motor for rotating the feed screw becomes a predetermined value as in the related art is read, and this is not performed at several places, but is measured while rotating. Therefore, even when measurement is performed at several points, processing can be performed in a short time, and processing can be performed within a target time.
[0032]
【Example】
1 to 5 show an apparatus for carrying out a method for setting and adjusting a backlash of a bevel gear or the like according to the present invention, and FIG. 6 shows an example of a gap amount analysis method.
[0033]
First, FIG. 1 shows a backlash setting / adjustment device such as a bevel gear composed of a pair of pinions 1 and a gear 2. The feed screw means 3 moves the pinion 1 side in the direction of the axis X of the gear 2 to adjust the relative position. FIG.
[0034]
That is, on the pinion 1 side, a pinion 1 is axially mounted on a spindle 14 rotatably supported by a pinion head 13 and rotated by a motor 15 for pinion rotation. 3 allows the gear 2 to move in the direction of the axis X. On the other gear 2 side, the gear 2 is mounted on a spindle (not shown) rotatably supported by the gear head 16 and does not move in the direction of the axis X.
[0035]
As shown in FIGS. 3 and 4, the feed screw means 3 can move the head moving member 4 with the movement of the nut portion 6 screwed to the feed screw 5. The pinion 1 is fixed to the pinion head 13 so that the pinion 1 can move in the direction of the axis X of the gear 2.
[0036]
A feed screw 5 is provided in the moving structure 4 in parallel with the direction of the axis X of the gear 2 so as to penetrate through the holes 17 and 18 of the front and rear walls. The nut 5 is screwed, but a flange 19 is formed near the rear end of the nut 5 to lock the rear surface 7b of the slidable member 7 described later.
[0037]
The nut portion 5 has a slidable member 7 fitted to a cylindrical portion thereof, and a part of the rear surface 7b of the slidable member 7 is locked by a flange portion 19 of the nut portion 6, When the nut 6 moves in the forward direction, that is, in the direction to eliminate the backlash, the slidable member 7 can also move in the forward direction at the same time.
[0038]
The slidable member 7 is provided with a plurality of coil-shaped springs as pressing means 9 at regular intervals in the circumferential direction between the movable member 4 and the front inner surface 4a. The coiled spring as the pressing means 9 presses the front inner surface 4a of the moving member 4 in the forward direction, thereby forming a gap between the rear inner surface 4b of the moving member 4 and the rear surface 7b of the slidable member 7. G is biased in the direction of zero. The pressing means 9 may use a pneumatic or hydraulic cylinder as shown in FIG.
[0039]
A gap sensor 8 for measuring a gap amount generated between the rear inner surface 4b and the rear surface 7b of the slidable member 7 is provided on a rear inner wall of the moving member 4, and a separately provided analysis processing device (not shown). ).
[0040]
A pneumatic fixing means 10 is provided between the inner peripheral wall of the moving member 4 and the outer peripheral surface of the slidable member 7 in order to stop the movement of the members 4 and 7 in the axial direction. It is.
[0041]
Next, FIG. 5 shows an apparatus which is a bevel gear composed of a pair of pinion 1 and a gear 2 and has feed screw means for adjusting the relative position by moving the gear 2 side in the direction of the axis X of the gear 2.
[0042]
That is, on the gear 2 side, the gear 2 is rotatably supported by a gear head 16 via a spindle (not shown). The gear head 16 is moved in the direction of the axis X of the gear 2 by the feed screw means 3 described later. It is possible. On the other hand, on the pinion 1 side, the pinion 1 is rotatably supported by the pinion head 13 via the spindle 14 and is rotated by the pinion rotation motor 15, but does not move in the direction of the axis X of the gear 2.
[0043]
The feed screw means 3 has a head moving member 4 that moves in accordance with the movement of the nut portion 6 screwed to the feed screw 5 fixed thereto, and the movement of the moving member 4 causes the gear head 14 and the gear 2 to be in gear. 2 is movable in the direction of the axis X.
[0044]
A feed screw 5 is provided in the moving member 4 in parallel with the direction of the axis X of the gear 2 so as to penetrate through the holes 17 and 18 of the front and rear walls. The nut portion 5 is screwed, and a flange portion 19 is formed near the rear end of the nut portion 5.
[0045]
A slidable member 7 is fitted to the nut portion 5 at its cylindrical portion, and a part of the rear surface 7b of the slidable member 7 is locked by the flange portion 19 of the nut portion 6. When the part 6 moves in the forward direction, that is, in the direction to eliminate the backlash, the slidable member 7 can be simultaneously moved in the forward direction.
[0046]
In the slidable member 7, a pneumatic pressing means 9 is provided as a pressing means between the movable inner body 4 and the front inner surface 4a. As the pneumatic pressing means 9, a recess 20 is formed in an annular shape from the front surface of the slidable member 7 to form a cylinder, and an annular convex portion 21 is used as a piston from the front inner surface 4 a of the moving structure 4. Have been combined.
[0047]
Air can be injected into the cylinder from the rear part of the slidable member 7, and the piston 21 is pushed forward to push the moving member 4 forward, and move with the rear surface 7 b of the slidable member 7. The gap G between the rear inner surfaces 4b of the structure 4 is set to zero. Note that the coil spring may be used for the pressing means 9.
[0048]
The other parts are the same as those of the above-described embodiment, and a gap sensor 8 for measuring a gap amount generated between the rear inner surface 4b and the rear surface 7b of the slidable member 7 is provided on the rear inner wall of the moving member 4, and separately provided. Connected to an analyzer (not shown). A pneumatic fixing means 10 is provided between the inner peripheral wall of the moving member 4 and the outer peripheral surface of the slidable member 7 in order to stop the movement of the members 4 and 7 in the axial direction. It is.
[0049]
The operating state of any of the above devices and the setting and adjustment of the backlash using the operating state may be performed as follows.
In a state where a backlash exists between the pinion 1 and the gear 2, the fixing of the fixing means 10 is released. Thereby, for example, as shown in FIG. 3, the moving component 4 is pressed forward on the front inner surface 4 a by the pressing force of the pressing means 9, and then the gap G between the inner surface 4 b and the rear surface 7 b of the slidable member 7 is formed. It disappears and the gap amount becomes zero.
[0050]
Next, the feed screw 5 is rotated by the feed screw motor 11 to move the moving component 4 forward, that is, in the direction in which the backlash becomes zero, via the nut portion 6, the slidable member 7, and the pressing means 9. As a result, the tooth surfaces of the pinion 1 and the gear 2 are in close contact with each other, but when the feed screw 5 is further rotated, the slidable member 7 moves further forward against the pressing force of the pressing means 9. Therefore, a gap G is generated between the rear surface 7b and the rear inner surface 4b of the moving structure 4.
[0051]
The gap amount is detected by the gap sensor 8, and when the gap amount reaches a predetermined value, the rotation of the feed screw 5 is stopped. In this state, while rotating one of the pinion 1 and the gear 2, the gap amount is read at every constant rotation angle, and the gap minimum value (GAPmin), the gap maximum value (GAPmax), the gap minimum value and the maximum value are determined. Data processing is performed by obtaining one or more of the difference (GAPvar), the gap average value (GAPave), and the stop position gap value (GAPo) (see FIG. 6).
[0052]
In addition to the data obtained above, the conversion amount K to the backlash with respect to the gap amount, and the backlash setting target value determined according to the use and size of the gear, etc., the adjustment amount B1 is calculated by the following equation. calculate.
[Adjustment amount B1 = stop position gap value (GAPo) -gap average value (GAPave) + backlash target value / K]
[0053]
Then, the moving member 4 integrated with the slidable member 7 by the fixing means 10 is set back to a desired backlash close to the target value by retracting the moving member 4 in the direction of producing the backlash by the adjustment amount B1.・ Adjusted.
It is to be noted that, as described above, not only the adjustment amount B1 but also the separately calculated adjustment amounts B2 and B3 may be used.
[0054]
【The invention's effect】
As is clear from the above, the method and apparatus for setting and adjusting the backlash of a bevel gear or the like according to the present invention have no risk of damaging the tooth surface during work, and in a short time and with high accuracy, the bevel gear and the like can be used. Backlash can be set and adjusted.
[0055]
That is, in this type of conventional means, the moving member is directly moved by the feed screw to press the tooth surface of the gear pair, and the contact of the tooth surface is detected by the current of the motor for rotating the feed screw. . Therefore, if there is variation in the frictional state between the feed screw and the nut, the load that presses the tooth surface will vary, and the position of the moving component will vary, and the current will be required to stabilize the motor current setting. The value required a certain amount of size, the surface pressure between the tooth surfaces became excessive, the tooth surface was damaged, and it took a long time to perform measurement at several places.
[0056]
However, in the method and apparatus for setting and adjusting the backlash of a bevel gear or the like according to the present invention, as described above, the gap amount between the rear inner surface of the moving member and the rear surface of the slidable member is changed for each constant rotation of the gear. Read, obtain the minimum value of the gap (GAPmin), etc., perform the data processing function, calculate the appropriate adjustment amount based on the data, and move the moving component integrated with the slidable member by this adjustment amount. By retracting in the direction that produces backlash, the desired backlash close to the target value is set and adjusted.
[0057]
Therefore, unlike the conventional method in which the moving member is directly moved by the feed screw of the conventional means and pressed against the tooth surface of the gear pair, the structure is provided through the pressing means capable of pressing the gap in the direction of zero. Therefore, the position of the moving component does not vary due to the variation in the frictional state between the feed screw and the nut portion, and the gear pair does not bend due to excessive force. As a result, an appropriate backlash can be set and adjusted without causing a difference in the backlash.
[0058]
B) Unlike the conventional means, the current value of the feed motor rotation motor does not require a certain amount of magnitude to stabilize the current set value, and the load torque of the motor is set at a constant value. Since the moving structure is not pressed against the gear pair until the value reaches the value, the possibility that the surface pressure between the tooth surfaces becomes excessive and damages the tooth surfaces can be eliminated.
[0059]
C) Further, unlike the conventional means, when the gap amount detected by the gap sensor reaches a preset value, the rotation of the feed screw is stopped, and in this state, the gap is provided at a constant rotation angle while rotating from one of the pinion and the gear. The quantity is read. As in the prior art, the position of the moving component when the current value of the motor for rotating the feed screw becomes a predetermined value is read, and it is not measured at several places, but is measured while rotating. Even when measurement is performed at several points, processing can be performed in a short time, and processing can be performed within a target time.
[Brief description of the drawings]
FIG. 1 is a plan view of an embodiment of an apparatus for implementing a method of setting and adjusting a backlash of a bevel gear or the like according to the present invention, in which a pinion side is moved.
FIG. 2 is a plan view showing an embodiment of an apparatus for performing a method of setting and adjusting a backlash of a bevel gear or the like according to the present invention, in which a gear side is moved.
FIG. 3 is a longitudinal sectional front view of a main part shown in FIG. 1 when a gap is set to zero.
FIG. 4 is a longitudinal sectional front view when a gap is generated in a main part of FIG.
FIG. 5 is a vertical sectional front view when a gap is generated in a main part of FIG.
FIG. 6 is a diagram illustrating an example of a gap amount analysis method.
[Explanation of symbols]
1-pinion 2-gear 3-feed screw means 4-moving structure 4a-front inner surface 4b-rear inner surface 5-feed screw 6-nut portion 7-slidable member 7b-rear surface 8-gap sensor 9-pressing means 10 -Fixing means 11-motor 12-guide rail 13-pinion head 14-spindle 15-motor 16-gear head 17-hole 18-hole 19-flange 20-recess 21-piston X-axis line G-gap

Claims

A device having a pair of bevel gears and the like consisting of a pinion 1 and a gear 2, wherein a moving member 4 is moved by a feed screw means 3 to relatively move the pinion 1 or the gear 2 in the axial direction of the gear 2; In the method of setting and adjusting the backlash of bevel gears, etc.,
{Circle around (1)} In a state where a backlash exists between the pinion 1 and the gear 2, a rear surface 7 b of the slidable member 7 engaged with the nut portion 6 in the moving member 4, and a rear inner surface of the moving member 4 4b is assumed to be 0,
(2) The moving member 4 is moved forward by the feed screw 5 so that the tooth surfaces of the pinion 1 and the gear 2 are in close contact with each other. A gap G is created between the rear surface 7b of the moving member 7 and the rear inner surface 4b of the moving structure 4,
{Circle around (3)} When the gap amount reaches a predetermined value, the rotation of the feed screw 5 is stopped, and in this state, while rotating one of the pinion 1 and the gear 2, the rotation of the feed screw 5 is performed at a constant rotation angle. Read the gap amount,
(4) From the above, any one of the minimum gap value (GAPmin), the maximum gap value (GAPmax), the difference between the minimum and maximum gap values (GAPvar), the average gap value (GAPave), and the stop position gap value (GAPo) A method for setting and adjusting the backlash of a bevel gear or the like, wherein one or two or more are obtained and a data processing function is performed, an appropriate adjustment amount is calculated based thereon, and the backlash is set and adjusted.

The difference (GAPvar) between the minimum value and the maximum value of the gap determined by the method for setting and adjusting the backlash of a bevel gear or the like according to claim 1 is calculated by using a conversion coefficient K to the backlash for the gap amount that is known in advance. Multiplying the value, comparing it with a previously stored limit value of the backlash fluctuation value, and performing processing so as to display the fact when the same value exceeds the above limit value, How to set and adjust the backlash of gears, etc.

A gap average value (GAPave), a stop position gap value (GAPo), and a conversion coefficient K for backlash with respect to a gap amount known in advance, obtained by the method for setting and adjusting backlash of a bevel gear or the like according to claim 1. And the backlash setting target value stored in advance, an adjustment amount B calculated by the following equation is calculated,
Adjustment amount B = stop position gap value (GAPo) −gap average value (GAPave) + backlash target value / K
A method of setting / adjusting a backlash of a bevel gear or the like, in which the movable component 4 fixed to the slidable member 7 is retracted in a direction of producing a backlash by the adjustment amount B.

The backlash setting / adjustment method for a bevel gear or the like according to claim 3, wherein the minimum gap value (GAPmin) is used instead of the average gap value (GAPave). Adjustment method.

The backlash setting / adjustment method for a bevel gear or the like according to claim 4, wherein a value calculated by the following equation is used instead of the average gap value (GAPave). Setting and adjustment method.
Gap average value (GAPave) −Y × [Gap average value (GAPave) −Gap minimum value (GAPmin)] where 0 <Y <1.

An apparatus having a pair of bevel gears and the like including a pinion 1 and a gear 2, wherein a moving member 4 is moved by feed screw means 3 to relatively move the pinion 1 or the gear 2 in the axial direction of the gear 2. In a device that sets and adjusts backlash of bevel gears,
A slidable member 7 locked movably forward is engaged with a nut portion 6 screwed to the feed screw 5 in the moving member 4, and moves with the rear surface 7b of the slidable member 7. A gap sensor 8 is provided for measuring a gap G generated between the component 4 and the rear inner surface 4b, and the gap G can be pressed between the slidable member 7 and the movable component 4 in the direction of setting the gap G to zero. And a fixing means 10 capable of fixing the movable member 4 and the slidable member 7 between the movable member 4 and the slidable member 7 in a state of a predetermined gap amount. Backlash setting / adjustment device for bevel gears.

A backlash setting / adjusting mechanism such as a bevel gear according to claim 6,
While rotating one of the pinion 1 and the gear 2, the gap amount is read for each constant rotation angle, and the gap minimum value (GAPmin), the gap maximum value (GAPmax), the difference between the gap minimum value and the maximum value (GAPvar), the gap An apparatus for setting and adjusting a backlash of a bevel gear or the like, comprising a data processing means for calculating an average value (GAPave) and a stop position gap value (GAPo).