JP4200471B2

JP4200471B2 - Cutting machine

Info

Publication number: JP4200471B2
Application number: JP02827799A
Authority: JP
Inventors: 繁春牛渡; 秀晃寺島
Original assignee: Hitachi Koki Co Ltd
Current assignee: Koki Holdings Co Ltd
Priority date: 1999-02-05
Filing date: 1999-02-05
Publication date: 2008-12-24
Anticipated expiration: 2019-02-05
Also published as: JP2000225603A

Description

【０００１】
【発明の属する技術分野】
本発明は、レーザー発振器を用いる切断位置決め装置を有した帯のこ盤、卓上丸のこなどの切断機に関するものである。
【０００２】
【従来の技術】
従来の切断材料に切断刃物の切断位置を示すレーザー光を照射するレーザー発振器として、実開昭６２−１５００１９号公報や西独特許公開３４０６９０４号公報が開示されている。
【０００３】
実開昭６２−１５００１９号は、切断材料の上方に切断刃物を設け、切断位置を示すレーザー光を切断材料に照射するレーザー発振器を固定したもので、西独特許公開３４０６９０４号は、スライドバーを介してレーザー発振器を水平移動自在にしたものである。
【０００４】
図９に示すように、例えば外径２５５ｍｍの切断刃物１０（丸のこ）であれば、切断幅ａは通常２．５ｍｍ程度で、レーザー光Ｌの幅ｂは通常約０．８ｍｍで、レーザー光Ｌと切断幅ａには差があった。よって、切断刃物１０の切断位置を示す位置として、作業者の好みにより図１０に示すように切断刃物１０刃幅の左右端の内側、又は図１１に示すように左右端の外側などにレーザー光Ｌを照射したい場合がある。
【０００５】
実開昭６２−１５００１９号の場合、レーザー発振器が固定されているため、レーザー光と切断位置の差を目視で確認して切断しなければならず、切断位置に誤差が生じる可能性があった。西独特許公開３４０６９０４号の場合、レーザー発振器は水平移動するが、レーザー発振器の微調整が困難であった。
【０００６】
この問題を解消したものに、米国特許５２８５７０８号，米国特許５３７５４９５号がある。切断材料の上方に切断刃物部を設け、切断刃物の上方前部にレーザー発振器を配置したもので、レーザー発振器は、レーザー発振器の凹溝と切断刃物部側のレールを嵌合させることで、レーザー発振器はレールに案内され切断刃物の幅の両端間を水平移動可能に保持されている。
【０００７】
【発明が解決しようとする課題】
上記構成は、切断刃物上部から切断刃物の下方に位置する切断材料にレーザー光を照射しているため、切断刃物刃幅の左端の内側又は右端の内側をレーザー光の照射位置に設定しようとすると、レーザー光と切断刃物が一直線上に位置するため、レーザー光は切断刃物で遮断され切断材料にレーザー光が照射されない。よって、切断刃物でレーザー光が遮断されないようにするためには、切断刃物に対し切断刃物幅の左端の外側又は右端の外側にしかレーザー光の照射位置を設定することができなかった。また、凹溝とレールとの間にすきまがあった場合、レーザー発振器にガタが発生するため、レーザー発振器の水平移動が不安定となり、切断刃物の切断位置が正確に示されない問題があった。
【０００８】
本発明の目的は、上記した従来の欠点をなくし、切断刃物刃幅の内側に切断刃物の位置を示すレーザー光を照射できるようにすることである。
また、他の目的は、切断刃物刃幅の左右端の内側又は左右端の外側などの任意の位置にレーザー光を移動調整できるようにすることである。
【０００９】
【課題を解決するための手段】
上記の目的を達成するために本発明は、切断材料を支持するベース部と、該ベース部に立設されたホルダと、該ホルダ上方に、シャフトを介して軸支され、前記ベース上面に対して上下方向に揺動自在に設けられた切断刃物部と、前記切断材料の表面にレーザ光を照射するレーザ発振器とを備えた切断機において、前記レーザ発振器を、前記ホルダ又は、前記切断刃物部のカバー後方下端部に取付け、前記切断刃物部が揺動の上限位置にあるときに、前記レーザ発振器の照射部より前記切断材料上面を照射するレーザ光が、切断刃物の下方を通過し、且つ切断刃物の刃先の延長線上にある切断材料上面位置を照射するようにしたことに一つの特徴を有する。
【００１０】
【発明の実施の形態】
本発明の実施形態を図１〜図４により説明する。図１は切断機の全体側面図、図２は部分背面図、図３は部分正面図、図４は図１のＡ−Ａ線断面図である。
【００１１】
図において、ベース１の中央にターンテーブル２を水平方向へ回動自在に埋設し、ターンテーブル２の上面は、ベース１の上面と同一面となっている。ベース１及びターンテーブル２の上面には木材等の切断材料４０が載置される。なお、本発明においては切断材料４０が載置される部材（本実施形態においてはベース１とターンテーブル２）を総称してベース部という。ベース１上面に切断材料４０の側面を支持するフェンス３を固定している。ターンテーブル２後端にはホルダシャフト４を介してホルダ５を立設し、ホルダシャフト４の軸心は、ターンテーブル２上面とほぼ一致するように位置させることで、ホルダ５はホルダシャフト４を支点にターンテーブル２の上面を中心に左右傾斜自在に軸支されている。
【００１２】
図２に示すように、ホルダ５の後部からはホルダシャフト４を中心とする長穴５ａが形成され、長穴５ａにクランプレバー６を貫通させ、クランプレバー６の先端に形成したねじ部がターンテーブル２背面に形成したねじ穴部にねじ嵌合している。クランプレバー６を緩めると、ホルダ５はホルダシャフト４を支点に長穴５ａの範囲内で傾斜し、クランプレバー６を締め付けると、ホルダ５はターンテーブル２とクランプレバー６間に締め付けられ、任意位置で固定される。なお、長穴５ａはホルダ５が左右４５度傾斜できる範囲内で形成されている。
【００１３】
ホルダ５上方にはシャフト７を介してベース１上面に対し上下揺動自在に切断刃物本体８を軸支している。ホルダ５と切断刃物本体８の間には、切断刃物本体８を上方に付勢するスプリング９が設けられている。
【００１４】
切断刃物本体８は切断刃物軸１６、丸のこなどの切断刃物１０、切断刃物１０の上半部を覆うのこカバー１１と一体となっているギヤケース１２、切断刃物１０を回転駆動するモートル１３、モートル１３のモートル軸１４、伝達ベルト２３、モートル１３及びモートル軸１４を覆い支持するモートルハウジング１５、ハンドル２６で構成されている。
【００１５】
図４に示すように、ギヤケース１２の下方には、水平方向に切断刃物軸１６を設け、切断刃物軸１６は軸受１７，１８で回転自在に支持され、この切断刃物軸１６の一端にボルト１９で切断刃物１０を固定し、切断刃物軸１６に動力を伝達するプーリ２０を設けている。ギヤケース１２上方にはモートルハウジング１５が設けられ、その内部に切断刃物１０を回転駆動するモートル１３が備えられている。軸受２１で回転自在に支持されたモートル１３のモートル軸１４の先端には、プーリ２２がプーリ２０の上方に位置するように設けられている。このプーリ２０，２２間に伝達ベルト２３を張り渡している。この伝達ベルト２３によりモートル１３の動力は、モートル軸１４からプーリ２２、伝達ベルト２３、プーリ２０、切断刃物軸１６を介し切断刃物１０に伝達されている。
【００１６】
ホルダ５の前面にはＶ字状の突起部５ｂが装着され、ターンテーブル２上面後方には突起部５ｂの移動軌跡上に位置するようにストッパボルト２４，２５が直角方向にねじ嵌合している。ホルダ５を傾斜させると、所定の傾斜角度で突起部５ｂがストッパボルト２４又はストッパボルト２５の頭部に係合し、切断刃物本体８の傾斜位置を設定する。通常、ストッパボルト２４，２５は、ホルダ５が左右方向に４５度の位置に傾斜したときに突起部５ｂに係合するように設けられている。
【００１７】
ターンテーブル２の上面には、中央に切断刃物１０が侵入する溝部を有する図示しない刃口板が固定され、切断材料４０の切断時、切断刃物１０の下端がターンテーブル２上面よりも下降したとき、前記刃口板の溝部に侵入し、切断材料４０の仕上面へのけば立ちを防止する役目を果たしている。
【００１８】
図３において、ホルダ５の前面に支持部材３２を固定する。図５に示すように支持部材３２中央に矩形の凹部３３を有し、凹部３３内に矩形のレーザー発振器３０が収納されている。レーザー光Ｌはレーザー発振器３０の照射部３０ａから照射され、支持部材３２は切断刃物部８が上限位置にあるとき、レーザー光Ｌの一部又は全部が切断刃物１０の下方を通過するようにレーザー発振器３０を設けている。なお、レーザー発振器３０には図示していないが、レーザー光Ｌを照射するためのスイッチを設けている。また、本実施形態では、レーザー発振器３０のレーザー光Ｌの照射部３０ａは、切断刃物１０の刃先１０ａの延長線上に位置している。
【００１９】
上記構成において、切断刃物部８が上限位置にあるとき、レーザー発振器３０から照射されたレーザー光Ｌは、切断刃物１０の刃先１０ａよりも下方を通過するので、切断刃物１０に邪魔されることなく切断材料４０の上面にレーザー光Ｌが照射される。切断材料４０の上面に切断位置を示す墨線３６を記し、切断材料４０を左右に移動させて、墨線４１をレーザー光Ｌに一致させる。これにより、切断刃物１０の刃先１０ａと墨線４１が一致したことになる。また、切断刃物１０の位置として切断刃物１０刃幅の左端の内側や右端の内側を示すようにレーザー発振器３０を取り付けても、切断刃物１０に邪魔されることなく、切断材料４０上面にレーザー光Ｌを照射することができる。
他の実施形態として、図１２に示すように、切断刃物本体８ののこカバー１１後方下端部にレーザー発振器３０を支持する支持部材３２を固定しても構わない。
【００２０】
次に、レーザー発振器３０の照射部３０ａを水平方向に移動させる構成について図５〜図９を用いて説明する。図５は図３のＢ−Ｂ線一部断面図、図６は図５のＣ−Ｃ線断面図、図７は図６のＤ−Ｄ線一部断面図、図８，図９は切断材料の斜視図である。
【００２１】
図５に示すように、支持部材３２の左側面に設けためねじ部３２ａにねじ部材となるノブ３４のねじ部３４ａがねじ嵌合し、ノブ３４は凹部３３内に貫通し、ノブ３４の先端はレーザー発振器３０の左側面に当接している。レーザー発振器３０の右側面と支持部材３２の右内壁間に弾性体である圧縮バネ３５を保持し、レーザー発振器３０をノブ３４側へ押圧することで、レーザー発振器３０とノブ３４とのガタをなくしている。図６において、レーザー発振器３０の上面と支持部材３２の上内壁間に弾性体である圧縮バネ３６を左右に２個保持し、レーザー発振器３０を支持部材３２の下面に押圧している。凹部３３の後部にレーザー発振器３０の背面を当接させる凸状の当接面３３ａを設け、支持部材３２の後方からボルト３７を挿通し、レーザー発振器３０にねじ嵌合させて固定している。ボルト３７と支持部材３２の間に圧縮バネ３８を支持し、レーザー発振器３０を支持部材３２の後端側へ押圧している。また、支持部材３２の左右に支持部材３２を貫通する一対のストッパ３９をねじ嵌合させ、レーザー発振器３０が所定位置まで移動すると、ストッパ３９の先端がレーザー発振器３０の側面に当接し、レーザー発振器３０の水平移動の範囲を規制している。
【００２２】
上記構成において、ノブ３４を回転させノブ３４を左方向に移動させた場合、レーザー発振器３０は圧縮バネ３５の復元力により左側に水平摺動する。ノブ３４を右方向に移動させた場合、レーザー発振器３０はノブ３４に押され右側に水平摺動する。ノブ３４を１回転させたときのレーザー発振器３０の移動量はノブ３４のねじのリード分だけとなり、レーザー発振器３０の微調整が可能となる。このとき、レーザー発振器３０は圧縮バネ３５、圧縮バネ３６、ボルト３７、圧縮バネ３８により、凹部３３内の左側面、下面及び背面に押圧され、レーザー発振器３０のガタがなくなるとともに、作業中の振動などによってノブ３４が回転し、不用意にレーザー発振器３０が移動することもない。
【００２３】
これにより、レーザー光Ｌの照射位置を図１０に示すように切断刃物１０刃幅の左右端の内側に設定したり、図１１に示すように切断刃物１０刃幅の左右端の外側に設定したりと、切断刃物１０の刃幅のどの位置にでもレーザー光Ｌを一致させることができる。
【００２４】
次に、図８に示すように切断材料４０の上面に墨線４１を記し、切断材料４０の左側の切断材料４０ａを使用し、墨線４１を左側の切断材料４０ａ上に残すとして、図１０（ａ）に示すようにレーザー光Ｌを切断刃物１０の刃幅の左端の内側に設定した場合の墨線合わせ作業は、墨線４１の右端にレーザー光Ｌ１の左端を一致させる。図１１（ａ）に示すようにレーザー光Ｌを切断刃物１０の刃幅の左端の外側に設定した場合は、図９に示すように、墨線４１の左端にレーザー光Ｌ２の左端を一致させる。次に、切断刃物本体８のハンドル２６を握り、切断刃物本体８を下方に揺動させ、切断材料４０を切断する。
【００２５】
次に、レーザー発振器３０の照射部３０ａを水平方向に移動させる第２の実施形態について図１３，図１４を用いて説明する。支持部材３２左側面の孔部３２ｂから凹部３３内に貫通するようにねじ部材となるノブ３４を挿通し、ノブ３４のねじ部３４ａはレーザー発振器３０左側面のめねじ部３０ｃにねじ嵌合している。レーザー発振器３０の左側面と支持部材３２左内壁の間に弾性体である圧縮バネ３５を保持し、レーザー発振器３０を右方向へ押圧することで、レーザー発振器３０とノブ３４とのガタをなくしている。他の構成は、第１の実施形態と同様である。ノブ３４を回転させると、レーザー発振器３０は左右に水平摺動する。以下、第１の実施形態と同様な方法で切断作業をすれば良い。
【００２６】
さらに、レーザー発振器３０の照射部３０ａを水平方向に移動させる第３の実施形態について図１５を用いて説明する。支持部材３２左側面の孔部３２ｂから凹部３３内に貫通するようにねじ部材となるノブ３４を挿通させ、凹部３３左壁側にノブ３４の位置決め用のリング５１を嵌合させ、ノブ３４のねじ部３４ａはレーザー発振器３０左側面のめねじ部５３ａにねじ嵌合している。レーザー発振器３０の右側面と支持部材３２の右内壁間に弾性体である圧縮バネ３５を保持し、レーザー発振器３０をノブ３４側へ押圧することで、レーザー発振器３０とノブ３４とのガタをなくしている。ノブ３４を回転させると、リング５１によりノブ３４の移動が規制されているので、レーザー発振器３０が左右に水平摺動する。以下、第１の実施形態と同様な方法で切断作業をすれば良い。
【００２７】
次に、レーザー発振器３０の照射部３０ａを水平方向に移動させる第４の実施形態について図１６を用いて説明する。支持部材３２左側面の孔部３２ｂから凹部３３内に貫通するノブ３４を挿通し、ノブ３４の先端には凹部３３左壁側に当接しノブ３４に設けたピニオン５２を連結し、ピニオン５２と噛み合い回転するギヤ５３を設け、ギヤ５３の中心に設けたねじ部５３ａはレーザー発振器３０の左側面のめねじ部３０ｃにねじ嵌合している。レーザー発振器３０の右側面と支持部材３２の右内壁間に弾性体である圧縮バネ３５を保持し、レーザー発振器３０をギヤ５３側へ押圧することで、レーザー発振器３０とギヤ５３とのガタをなくしている。ノブ３４を回転させると、ピニオン５２を介して、ギヤ５３が回転し、レーザー発振器３０が左右に水平摺動する。以下、第１の実施形態と同様な方法で切断作業をすれば良い。
【００２８】
さらに、レーザー発振器３０の照射部３０ａを水平方向に移動させる第５の実施形態について図１７を用いて説明する。支持部材３２左側面の孔部３２ｂから凹部３３に貫通するノブ３４を挿通し、ノブ３４の先端には凹部３３左壁側に当接しノブ３４に設けたピニオン５２を連結し、ピニオン５２と噛み合い回転するギヤ５３を設け、ギヤ５３の中心に設けたねじ部５３ａは凹部３３の壁３３ｂを貫通し、レーザー発振器３０左側面のめねじ部３０ｃにねじ嵌合している。レーザー発振器３０の左側面と支持部材３２の右内壁間に弾性体である圧縮バネ３５を保持し、レーザー発振器３０をノブ３４の反対側へ押圧している。ノブ３４を回転させると、ピニオン５２を介して、ギヤ５３が回転する。このとき、壁３３ｂによりギヤ５３の移動が規制されるので、レーザー発振器３０が左右に水平摺動する。以下、第１の実施形態と同様な方法で切断作業をすれば良い。
【００２９】
次に、レーザー発振器３０の照射部３０ａを水平方向に移動させる第６の実施形態について図１８を用いて説明する。支持部材３２の下部中央部に開放部３２ｃを形成し、下部にスクリュー５４を水平に固定する。スクリュー５４にリングネジ５５をねじ嵌合し、リングネジ５５を回転させると、リングネジ５５は開放部３２ｃ間を横移動する。リングネジ５５の上端がレーザー発振器３０下面の溝部３０ｄに嵌合している。レーザー発振器３０の右側面と支持部材３２の右内壁間に弾性体である圧縮バネ３５を保持し、レーザー発振器３０をリングネジ５５側へ押圧し、レーザー発振器３０の溝部３０ｄとリングネジ５５とのガタをなくしている。リングネジ５５を回転させると、リングネジ５５の横移動に連動してレーザー発振器３０が左右に水平摺動する。また、スクリュー５４を支持部材３２に固定するのに代えてねじ嵌合させれば、スクリュー５４の回転によりリングネジ５５が連動して横移動しレーザー発振器３０が左右に水平摺動する。
【００３０】
なお、本実施形態は切断刃物を揺動させる卓上丸のこの切断機を例として説明したが、揺動式帯のこ盤などの切断機にも応用可能である。
【００３１】
【発明の効果】
本発明によれば、レーザー発振器から照射されたレーザー光の一部又は全部は、切断刃物の刃先よりも下方を通過するので、切断刃物に邪魔されることなく切断材料上面の切断位置にレーザー光を照射させることができ、レーザー光の照射位置を切断刃物刃幅の左端の内側又は右端の内側などを示すことができる。
また、ねじ部材の回転によりレーザー発振器を左右に微動させることで、レーザー光を水平方向に微動調整することができる。
また、圧縮バネの復元力によりレーザー発振器を埋設する凹部の片壁側に押圧することにより、レーザー発振器のガタを押さえ精度良くレーザー光を水平に移動することができる。
さらに、レーザー発振器を埋設する凹部の左右に一対のストッパをねじ嵌合させ、レーザー発振器の水平摺動をストッパの先端で規制できるようにしたため、左右への移動量を切断作業者が任意位置での位置決めすることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態を示す切断機の全体側面図。
【図２】切断機の部分背面図。
【図３】切断機の部分正面図。
【図４】図１のＡ−Ａ線断面図。
【図５】図３のＢ−Ｂ線一部断面図。
【図６】図５のＣ−Ｃ線断面図。
【図７】図６のＤ−Ｄ線一部断面図。
【図８】切断材料の斜視図。
【図９】切断材料の斜視図。
【図１０】切断刃物刃幅の内側にレーザー光を照射した場合の説明図。
【図１１】切断刃物刃幅の外側にレーザー光を照射した場合の説明図。
【図１２】他の実施形態を示す切断機の全体側面図。
【図１３】他の実施形態を示す図２のＢ−Ｂ線一部断面図。
【図１４】図１３のＥ−Ｅ線一部断面図。
【図１５】他の実施形態を示す図２のＢ−Ｂ線一部断面図。
【図１６】他の実施形態を示す図２のＢ−Ｂ線一部断面図。
【図１７】他の実施形態を示す図２のＢ−Ｂ線一部断面図。
【図１８】他の実施形態を示す図２のＢ−Ｂ線一部断面図。
【符号の説明】
５…ホルダ、８…切断刃物本体、１０…切断刃物、３０…レーザー発振器、３０ｃ…めねじ部、３２…支持部材、３３…凹部、３４…ノブ（ねじ部材）、３４ａ…ねじ部、３５，３６，３８…圧縮バネ、３７…ボルト、３９…ストッパ、４０…切断材料、５１…リング、５２…ピニオン、５３…ギヤ、５３ａ…ねじ部、５４…スクリュー、５５…リングネジ、Ｌ…レーザー光。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutting machine such as a band saw machine or tabletop saw having a cutting positioning device using a laser oscillator .
[0002]
[Prior art]
Japanese Utility Model Laid-Open No. 62-150019 and West German Patent Publication No. 3406904 are disclosed as laser oscillators that irradiate a conventional cutting material with laser light indicating the cutting position of a cutting blade.
[0003]
In Japanese Utility Model Publication No. 62-150019, a cutting blade is provided above a cutting material, and a laser oscillator for irradiating the cutting material with a laser beam indicating the cutting position is fixed. The laser oscillator can be moved horizontally.
[0004]
As shown in FIG. 9, for example, in the case of a cutting blade 10 (circular saw) having an outer diameter of 255 mm, the cutting width a is usually about 2.5 mm, and the width b of the laser beam L is usually about 0.8 mm. There was a difference between the light L and the cutting width a. Therefore, as a position indicating the cutting position of the cutting blade 10, laser light is applied to the inside of the left and right ends of the cutting blade 10 as shown in FIG. 10 or the outside of the left and right ends as shown in FIG. There are cases where it is desired to irradiate L.
[0005]
In the case of Japanese Utility Model Publication No. 62-150019, since the laser oscillator is fixed, the difference between the laser beam and the cutting position must be visually checked for cutting , and an error may occur in the cutting position. . In the case of West German Patent Publication No. 3406904, the laser oscillator moves horizontally, but fine adjustment of the laser oscillator is difficult.
[0006]
In order to solve this problem, there are US Pat. No. 5,285,708 and US Pat. No. 5,375,495. Upward is provided a cutting blade of the cutting material, which was disposed a laser oscillator on side front of the cutting tool, a laser oscillator, by fitting the concave groove and the cutting blade portion of the rail of the laser oscillator, The laser oscillator is guided by a rail and is held so as to be horizontally movable between both ends of the width of the cutting blade.
[0007]
[Problems to be solved by the invention]
In the above configuration, the laser beam is irradiated from the upper part of the cutting blade to the cutting material located below the cutting blade, so when trying to set the inner side of the left end or the right end of the cutting blade width as the laser light irradiation position. Since the laser beam and the cutting blade are positioned on a straight line, the laser beam is blocked by the cutting blade and the cutting material is not irradiated with the laser beam. Therefore, in order to prevent the laser beam from being blocked by the cutting blade, the irradiation position of the laser beam can be set only outside the left end or the right end of the cutting blade width with respect to the cutting blade. Also, if there is a gap between the groove and the rail, because the backlash is generated in the laser oscillator, the horizontal moving of the laser oscillator becomes unstable, there is a problem that the cutting position of the cutting blade is not shown correctly It was.
[0008]
An object of the present invention is to eliminate the above-described conventional drawbacks and to irradiate a laser beam indicating the position of the cutting blade inside the cutting blade width.
Another object is to enable the laser beam to be moved and adjusted to an arbitrary position such as the inside of the left and right ends of the cutting blade width or the outside of the left and right ends.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a base portion for supporting a cutting material, a holder erected on the base portion, and a shaft supported above the holder via a shaft, with respect to the upper surface of the base. In a cutting machine provided with a cutting blade portion provided so as to be swingable in the vertical direction and a laser oscillator for irradiating the surface of the cutting material with laser light, the laser oscillator is connected to the holder or the cutting blade portion. A laser beam that irradiates the upper surface of the cutting material from the irradiation portion of the laser oscillator passes under the cutting blade when the cutting blade portion is at the upper limit position of the swing, One feature is that the upper surface position of the cutting material on the extended line of the cutting edge of the cutting blade is irradiated.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. 1 is an overall side view of the cutting machine, FIG. 2 is a partial rear view, FIG. 3 is a partial front view, and FIG. 4 is a cross-sectional view taken along line AA in FIG.
[0011]
In the figure, a turntable 2 is embedded in the center of the base 1 so as to be rotatable in the horizontal direction, and the upper surface of the turntable 2 is flush with the upper surface of the base 1. A cutting material 40 such as wood is placed on the upper surfaces of the base 1 and the turntable 2. In the present invention, members on which the cutting material 40 is placed (in this embodiment, the base 1 and the turntable 2) are collectively referred to as a base portion. The fence 3 that supports the side surface of the cutting material 40 is fixed to the upper surface of the base 1. A holder 5 is erected on the rear end of the turntable 2 via a holder shaft 4, and the holder 5 is positioned so that the axial center of the holder shaft 4 substantially coincides with the upper surface of the turntable 2. It is pivotally supported by a fulcrum so that it can tilt right and left around the upper surface of the turntable 2.
[0012]
As shown in FIG. 2, a long hole 5 a centering on the holder shaft 4 is formed from the rear part of the holder 5, and the clamp lever 6 is passed through the long hole 5 a, and a screw part formed at the tip of the clamp lever 6 is turned. It is screwed into a screw hole formed on the back surface of the table 2. When the clamp lever 6 is loosened, the holder 5 is tilted within the range of the elongated hole 5a with the holder shaft 4 as a fulcrum, and when the clamp lever 6 is tightened, the holder 5 is tightened between the turntable 2 and the clamp lever 6 to an arbitrary position. It is fixed with. The long hole 5a is formed within a range in which the holder 5 can be tilted 45 degrees to the left and right.
[0013]
A cutting blade body 8 is pivotally supported above the holder 5 via a shaft 7 so as to be swingable up and down with respect to the upper surface of the base 1. A spring 9 is provided between the holder 5 and the cutting blade body 8 to urge the cutting blade body 8 upward.
[0014]
The cutting blade body 8 includes a cutting blade shaft 16, a cutting blade 10 such as a circular saw, a gear case 12 integrated with a saw cover 11 that covers the upper half of the cutting blade 10, and a motor 13 that rotationally drives the cutting blade 10. The motor 13 includes a motor shaft 14, a transmission belt 23, the motor 13, a motor housing 15 that covers and supports the motor shaft 14, and a handle 26.
[0015]
As shown in FIG. 4, a cutting blade shaft 16 is horizontally provided below the gear case 12, and the cutting blade shaft 16 is rotatably supported by bearings 17 and 18. A bolt 19 is attached to one end of the cutting blade shaft 16. The cutting blade 10 is fixed by a pulley 20 for transmitting power to the cutting blade shaft 16. A motor housing 15 is provided above the gear case 12, and a motor 13 that rotationally drives the cutting blade 10 is provided therein. A pulley 22 is provided above the pulley 20 at the tip of the motor shaft 14 of the motor 13 that is rotatably supported by the bearing 21. It has stretched the transfer our belt 23 between the pulley 20 and 22. The power of the motor 13 is transmitted from the motor shaft 14 to the cutting blade 10 via the pulley 22, the transmission belt 23, the pulley 20, and the cutting blade shaft 16 by the transmission belt 23.
[0016]
A V-shaped protrusion 5b is mounted on the front surface of the holder 5, and stopper bolts 24 and 25 are screwed in a perpendicular direction so as to be positioned on the movement locus of the protrusion 5b on the rear surface of the turntable 2. Yes. When the holder 5 is tilted, the projection 5b is engaged with the head of the stopper bolt 24 or the stopper bolt 25 at a predetermined tilt angle, and the tilt position of the cutting blade body 8 is set. Normally, the stopper bolts 24 and 25 are provided so as to engage with the protrusion 5b when the holder 5 is inclined at a 45 degree position in the left-right direction.
[0017]
A blade plate (not shown) having a groove part into which the cutting blade 10 enters at the center is fixed on the upper surface of the turntable 2, and the lower end of the cutting blade 10 is lowered from the upper surface of the turntable 2 when the cutting material 40 is cut. , It penetrates into the groove portion of the blade plate and plays the role of preventing the cutting material 40 from standing on the finished surface.
[0018]
In FIG. 3, the support member 32 is fixed to the front surface of the holder 5. As shown in FIG. 5, a rectangular recess 33 is provided at the center of the support member 32, and the rectangular laser oscillator 30 is accommodated in the recess 33. The laser beam L is emitted from the irradiation unit 30 a of the laser oscillator 30, and the support member 32 is a laser so that a part or all of the laser beam L passes below the cutting blade 10 when the cutting blade unit 8 is at the upper limit position. An oscillator 30 is provided. Although not shown, the laser oscillator 30 is provided with a switch for irradiating the laser beam L. Moreover, in this embodiment, the irradiation part 30a of the laser beam L of the laser oscillator 30 is located on an extension line of the cutting edge 10a of the cutting blade 10.
[0019]
In the above configuration, when the cutting blade portion 8 is at the upper limit position, the laser light L emitted from the laser oscillator 30 passes below the cutting edge 10a of the cutting blade 10, so that the cutting blade 10 is not obstructed. The laser beam L is irradiated on the upper surface of the cutting material 40. The black line 36 which shows a cutting position is marked on the upper surface of the cutting material 40, the cutting material 40 is moved right and left, and the black line 41 is matched with the laser beam L. Thereby, the cutting edge 10a of the cutting blade 10 and the black line 41 coincide. Further, even if the laser oscillator 30 is attached so as to indicate the inside of the left end or the inside of the right end of the cutting blade 10 as the position of the cutting blade 10, laser light is applied to the upper surface of the cutting material 40 without being interrupted by the cutting blade 10. L can be irradiated.
As another embodiment, as shown in FIG. 12, a support member 32 that supports the laser oscillator 30 may be fixed to the lower rear end portion of the saw cover 11 of the cutting blade body 8.
[0020]
Next, the structure which moves the irradiation part 30a of the laser oscillator 30 to a horizontal direction is demonstrated using FIGS. 5 is a partial cross-sectional view taken along line BB in FIG. 3, FIG. 6 is a cross-sectional view taken along line CC in FIG. 5, FIG. 7 is a partial cross-sectional view taken along line DD in FIG. It is a perspective view of material.
[0021]
As shown in FIG. 5, the threaded portion 34 a of the knob 34 serving as a threaded member is screwed into the threaded portion 32 a to be provided on the left side surface of the support member 32, and the knob 34 penetrates into the recessed portion 33. Is in contact with the left side surface of the laser oscillator 30. A compression spring 35, which is an elastic body, is held between the right side surface of the laser oscillator 30 and the right inner wall of the support member 32, and the play between the laser oscillator 30 and the knob 34 is eliminated by pressing the laser oscillator 30 toward the knob 34. ing. In FIG. 6, two compression springs 36, which are elastic bodies, are held between the upper surface of the laser oscillator 30 and the upper inner wall of the support member 32, and the laser oscillator 30 is pressed against the lower surface of the support member 32. A convex contact surface 33 a that contacts the back surface of the laser oscillator 30 is provided at the rear of the recess 33, and a bolt 37 is inserted from the rear of the support member 32, and is fixed to the laser oscillator 30 by screwing. A compression spring 38 is supported between the bolt 37 and the support member 32, and the laser oscillator 30 is pressed toward the rear end side of the support member 32. Further, when a pair of stoppers 39 penetrating the support member 32 are screwed to the left and right of the support member 32 and the laser oscillator 30 moves to a predetermined position, the tip of the stopper 39 comes into contact with the side surface of the laser oscillator 30 and the laser oscillator The range of 30 horizontal movements is regulated.
[0022]
In the above configuration, when the knob 34 is rotated and the knob 34 is moved to the left, the laser oscillator 30 horizontally slides to the left by the restoring force of the compression spring 35. When the knob 34 is moved rightward, the laser oscillator 30 is pushed by the knob 34 and slides horizontally on the right side. The amount of movement of the laser oscillator 30 when the knob 34 is rotated once is only the lead amount of the screw of the knob 34, and the laser oscillator 30 can be finely adjusted. At this time, the laser oscillator 30 is pressed by the compression spring 35, the compression spring 36, the bolt 37, and the compression spring 38 against the left side surface, the bottom surface, and the back surface in the recess 33, and the backlash of the laser oscillator 30 is eliminated and vibration during operation is performed. For example, the knob 34 is rotated and the laser oscillator 30 is not moved carelessly.
[0023]
Thereby, the irradiation position of the laser beam L is set to the inside of the left and right ends of the cutting blade 10 as shown in FIG. 10, or is set to the outside of the left and right ends of the cutting blade 10 as shown in FIG. The laser beam L can be made to coincide with any position of the blade width of the cutting blade 10.
[0024]
Next, as shown in FIG. 8, a black line 41 is marked on the upper surface of the cutting material 40, the left cutting material 40a of the cutting material 40 is used, and the black line 41 is left on the left cutting material 40a. ), The black line alignment operation when the laser light L is set inside the left end of the blade width of the cutting blade 10 makes the left end of the laser light L1 coincide with the right end of the black line 41. When the laser beam L is set outside the left end of the blade width of the cutting blade 10 as shown in FIG. 11A, the left end of the laser beam L2 is matched with the left end of the black line 41 as shown in FIG. Next, the handle 26 of the cutting blade body 8 is gripped, the cutting blade body 8 is swung downward, and the cutting material 40 is cut.
[0025]
Next, a second embodiment in which the irradiation unit 30a of the laser oscillator 30 is moved in the horizontal direction will be described with reference to FIGS. A knob 34 serving as a screw member is inserted through the hole 32b on the left side surface of the support member 32 into the recess 33, and the screw portion 34a of the knob 34 is screwed into the female screw portion 30c on the left side surface of the laser oscillator 30. ing. By holding a compression spring 35, which is an elastic body, between the left side surface of the laser oscillator 30 and the left inner wall of the support member 32 and pressing the laser oscillator 30 in the right direction, the play between the laser oscillator 30 and the knob 34 is eliminated. Yes. Other configurations are the same as those of the first embodiment. When the knob 34 is rotated, the laser oscillator 30 slides horizontally from side to side. Hereinafter, it may be cutting operation in the first exemplary shaped on purpose the such methods.
[0026]
Furthermore, a third embodiment in which the irradiation unit 30a of the laser oscillator 30 is moved in the horizontal direction will be described with reference to FIG. A knob 34 serving as a screw member is inserted through the hole 32b on the left side surface of the support member 32 so as to penetrate into the recess 33, and a positioning ring 51 of the knob 34 is fitted to the left wall side of the recess 33. The screw portion 34a is screwed to the female screw portion 53a on the left side surface of the laser oscillator 30. A compression spring 35, which is an elastic body, is held between the right side surface of the laser oscillator 30 and the right inner wall of the support member 32, and the play between the laser oscillator 30 and the knob 34 is eliminated by pressing the laser oscillator 30 toward the knob 34. ing. When the knob 34 is rotated, the movement of the knob 34 is restricted by the ring 51, so that the laser oscillator 30 slides horizontally from side to side. Hereinafter, it may be cutting operation in the first exemplary shaped on purpose the such methods.
[0027]
Next, a fourth embodiment in which the irradiation unit 30a of the laser oscillator 30 is moved in the horizontal direction will be described with reference to FIG. A knob 34 penetrating into the recess 33 is inserted through the hole 32b on the left side surface of the support member 32, and a pinion 52 provided on the knob 34 is connected to the tip of the knob 34 so as to contact the left wall of the recess 33. A gear 53 that meshes and rotates is provided, and a screw portion 53 a provided at the center of the gear 53 is screwed to a female screw portion 30 c on the left side surface of the laser oscillator 30. A compression spring 35, which is an elastic body, is held between the right side surface of the laser oscillator 30 and the right inner wall of the support member 32, and the laser oscillator 30 is pressed toward the gear 53, thereby eliminating backlash between the laser oscillator 30 and the gear 53. ing. When the knob 34 is rotated, the gear 53 rotates through the pinion 52, and the laser oscillator 30 slides horizontally from side to side. Hereinafter, it may be cutting operation in the first exemplary shaped on purpose the such methods.
[0028]
Further, a fifth embodiment in which the irradiation unit 30a of the laser oscillator 30 is moved in the horizontal direction will be described with reference to FIG. A knob 34 penetrating into the recess 33 is inserted through the hole 32b on the left side surface of the support member 32, and a pinion 52 provided on the knob 34 is connected to the tip of the knob 34 so as to contact the pinion 52 and engage with the pinion 52. the conservation ya 53 for rotation is provided, the screw portion 53a provided at the center of the gear 53 through the wall 33b of the recess 33, is threaded engaged with the female screw portion 30c of the laser oscillator 30 left side. A compression spring 35, which is an elastic body, is held between the left side surface of the laser oscillator 30 and the right inner wall of the support member 32, and presses the laser oscillator 30 to the opposite side of the knob 34. When the knob 34 is rotated, the gear 53 is rotated via the pinion 52. At this time, since the movement of the gear 53 is restricted by the wall 33b, the laser oscillator 30 slides horizontally from side to side. Hereinafter, it may be cutting operation in the first exemplary shaped on purpose the such methods.
[0029]
Next, a sixth embodiment in which the irradiation unit 30a of the laser oscillator 30 is moved in the horizontal direction will be described with reference to FIG. An opening 32c formed at the bottom center portion of the support member 32, horizontally secure the screw 54 in the lower part. Screw fitted to Ringuneji 55 to the screw 54, rotating the Ringuneji 55, Ringuneji 55 laterally moves between opening 32c. The upper end of the ring screw 55 is fitted in the groove 30d on the lower surface of the laser oscillator 30. A compression spring 35, which is an elastic body, is held between the right side surface of the laser oscillator 30 and the right inner wall of the support member 32, the laser oscillator 30 is pressed toward the ring screw 55, and the play between the groove 30d of the laser oscillator 30 and the ring screw 55 is prevented. It is lost. When the ring screw 55 is rotated, the laser oscillator 30 horizontally slides left and right in conjunction with the lateral movement of the ring screw 55. If the screw 54 is screwed instead of being fixed to the support member 32, the ring screw 55 is moved in conjunction with the rotation of the screw 54, and the laser oscillator 30 slides horizontally from side to side.
[0030]
In addition, although this embodiment demonstrated as an example this cutting machine of the table-top round which rocks a cutting blade, it is applicable also to cutting machines, such as a rocking-type band saw board.
[0031]
【The invention's effect】
According to the present invention, part or all of the laser light emitted from the laser oscillator passes below the cutting edge of the cutting blade, so that the laser light can be applied to the cutting position on the upper surface of the cutting material without being interrupted by the cutting blade. Can be irradiated, and the irradiation position of the laser beam can indicate the inside of the left end or the inside of the right end of the cutting blade width.
Further, the laser beam can be finely adjusted in the horizontal direction by finely moving the laser oscillator left and right by rotating the screw member.
Further, by pressing against the one wall side of the concave portion in which the laser oscillator is embedded by the restoring force of the compression spring, it is possible to move the laser light horizontally with high accuracy by pressing the backlash of the laser oscillator.
In addition, a pair of stoppers are screwed to the left and right of the recess where the laser oscillator is embedded, so that the horizontal sliding of the laser oscillator can be regulated by the tip of the stopper, so that the amount of movement to the left and right can be adjusted at any position by the cutting operator. Can be positioned.
[Brief description of the drawings]
FIG. 1 is an overall side view of a cutting machine showing an embodiment of the present invention.
FIG. 2 is a partial rear view of the cutting machine.
FIG. 3 is a partial front view of the cutting machine.
4 is a cross-sectional view taken along line AA in FIG.
5 is a partial cross-sectional view taken along line BB in FIG. 3;
6 is a cross-sectional view taken along line CC in FIG.
7 is a partial cross-sectional view taken along the line DD in FIG. 6;
FIG. 8 is a perspective view of a cutting material.
FIG. 9 is a perspective view of a cutting material.
FIG. 10 is an explanatory diagram when laser light is irradiated on the inner side of the cutting blade width.
FIG. 11 is an explanatory diagram when laser light is irradiated to the outside of the cutting blade width.
FIG. 12 is an overall side view of a cutting machine showing another embodiment.
13 is a partial cross-sectional view taken along the line BB of FIG. 2 showing another embodiment.
14 is a partial cross-sectional view taken along line EE of FIG. 13;
15 is a partial cross-sectional view taken along the line BB in FIG. 2 showing another embodiment.
16 is a partial cross-sectional view taken along line BB of FIG. 2 showing another embodiment.
17 is a partial cross-sectional view taken along line BB of FIG. 2 showing another embodiment.
18 is a partial cross-sectional view taken along line BB of FIG. 2 showing another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 5 ... Holder, 8 ... Cutting blade main body, 10 ... Cutting blade, 30 ... Laser oscillator, 30c ... Female thread part, 32 ... Support member, 33 ... Recessed part, 34 ... Knob (screw member), 34a ... Screw part, 35, 36, 38 ... compression spring, 37 ... bolt, 39 ... stopper, 40 ... cutting material, 51 ... ring, 52 ... pinion, 53 ... gear, 53a ... screw part, 54 ... screw, 55 ... ring screw, L ... laser beam.

Claims

A base that supports the cutting material;
A holder erected on the base portion;
A cutting blade portion pivotally supported via a shaft above the holder and provided so as to be swingable in the vertical direction with respect to the upper surface of the base;
In a cutting machine comprising a laser oscillator for irradiating the surface of the cutting material with laser light,
The laser oscillator is attached to the holder or the lower rear end of the cover of the cutting blade part,
When the cutting blade portion is at the upper limit position of the swing, the laser light that irradiates the upper surface of the cutting material from the irradiation portion of the laser oscillator passes below the cutting blade,
In addition, the upper surface position of the cutting material on the extended line of the cutting edge of the cutting blade is irradiated.
A cutting machine characterized by that.

The cutting machine according to claim 1, further comprising moving means for sliding the laser oscillator in a horizontal direction parallel to a cutting blade axis.

The moving means includes a support member that extends in the laser light irradiation direction, and a screw member that is screw-fitted to the support member and abuts against a side surface of the laser oscillator. 3. The cutting machine according to claim 2, wherein the laser oscillator is slidable in the horizontal direction.

The moving means includes a pair of support members that extend in the laser light irradiation direction, a screw member that is screw-fitted to one of the support members and abuts on one side of the laser oscillator, and the other support member 3. The cutting machine according to claim 2, comprising an elastic body provided between the other side surface of the laser oscillator.

The moving means includes a support member extending in the laser light irradiation direction, and a screw member rotatably supported by the support member and screwed to a side surface of the laser oscillator. 3. The cutting machine according to claim 2, wherein the laser oscillator is made slidable in the horizontal direction by rotating.

The moving means includes a pair of supporting members extending in the laser light irradiation direction, a screw member rotatably supported by one supporting member, and screw-fitted to one side surface of the laser oscillator, and the other 3. The cutting machine according to claim 2, comprising an elastic body provided between the support member and the other side surface of the laser oscillator.