JP3579103B2

JP3579103B2 - Method of fixing cutting edge height adjusting bolt in veneer veneer cutting knife and veneer veneer cutting knife

Info

Publication number: JP3579103B2
Application number: JP00837195A
Authority: JP
Inventors: 優小池
Original assignee: Meinan Machinery Works Inc
Current assignee: Meinan Machinery Works Inc
Priority date: 1995-01-23
Filing date: 1995-01-23
Publication date: 2004-10-20
Anticipated expiration: 2019-10-20
Also published as: JPH08197501A

Description

【０００１】
【産業上の利用分野】
本発明は、ベニヤレースで使用するベニヤ単板切削用ナイフにおける刃先高さの調整用ボルトを固定する方法及びベニヤ単板切削用ナイフに関する。
更に詳しくは、ナイフセッティングゲージを用いて研磨済みナイフの刃先高さを設定する際に、ナイフの刃底に備えた調整用ボルトを回して行なう調整作業の簡便化を図るとともに、調整完了後のボルトの緩み、更には切削中に切削抵抗により刃先高さが狂うのを防止するものである。
【０００２】
【従来の技術】
従来の原木を切削するベニヤ単板切削用ナイフは、図１２のようにナイフ１０の刃底に調整用ボルト１２が螺合され、その調整用ボルト１２にはダブルナットのために補助ナット１２ａが螺合されている。つまり、研磨済みナイフ１０の刃先高さを特定高さにするために調整用ボルト１２を回して行なう調整作業の後、補助ナット１２ａを締付け、調整用ボルト１２を固定していた。
この調整法は、調整用ボルト１２と補助ナット１２ａの拡大図である図１３のように、先ず調整用ボルト１２の調整後には直接に荷重を受ける圧力側フランクは、互いに接触させた状態の調整用ボルト１２の進み側フランク１２ｂと、ナイフ１０刃底の調整ボルト用ネジ孔１４の下側フランク１０ａとである。次に、補助ナット１２ａが刃底に当接し回された時にはナイフ１０は押し上げられ、ナイフ１０の自重によるところの、調整用ボルト１２の進み側フランク１２ｂへの荷重は無くなりナイフ１０の刃底は補助ナット１２ａの上に載置した状態となる。更に補助ナット１２ａを回し、図１４のようにナイフ１０の上側フランク１０ｂが調整用ボルト１２の追い側フランク１２ｃに接触し、補助ナット１２ａの締付けが終わった状態では、圧力側フランクは、調整用ボルト１２の進み側フランク１２ｂと補助ナット１２ａの追い側フランク１２ｄ及び調整用ボルト１２の追い側フランク１２ｃとナイフ１０の上側フランク１０ｂとになる。
【０００３】
【発明が解決しようとする課題】
第１に、調整用ボルトでの調整後、その固定のためにナイフはバックラッシュ分、補助ナットに押し上げられるために刃先高さに狂いが生じる。そのために、ベニヤ単板切削用ナイフの刃先高さを調整する時に、調整用ボルトを逆に緩めては補助ナットを締めることを繰り返す熟練を要した再調整が必要となる。第２に、ナイフは切削中に下向きの荷重を受けるが、調整用ボルトの進み側フランクに対しねじ山数の少ない補助ナットの追い側フランクに負荷がかかり、補助ナットの緩みや変形を招く。その為切削中にナイフ１０の刃先が下がってしまうという問題が発生した。また、その負荷を分散するために調整用ボルト及び補助ナットの設置数を増やすことは調整作業の回数が増加し面倒となる。
【０００４】
【課題を解決するための手段】
本発明の上記課題を解決するために、本発明の構成は、ベニヤ単板切削用ナイフ（１０）の刃底に螺合した刃先高さ調整用ボルト（１２）の固定方法であって、刃先を上方に向けた状態において前記調整用ボルト（１２）による高さ調整完了後、前記調整用ボルト（１２）の進み側フランク（１２ｂ）と前記刃底の調整ボルト挿入用ネジ孔（１４）の下側フランク（１０ａ）とを接触させた状態を維持しつつ、前記調整用ボルト（１２）を調整ボルト固定用部材（２０，２１）によって固定するものである。なお、「上方」とは、ベニヤレースにナイフを装着時のナイフの長手方向と直交する方向に傾いた場合も含む。「進み側フランク」とは、ねじ込みの際、ボルトの進行方向に対面するねじ山の斜面をいい、「下側フランク」とは、刃先を上方に向けた状態において刃底の調整ボルト挿入用ネジ孔のねじ山の下側斜面をいう。
また、前記調整用ボルト（１２）の前記調整ボルト固定用部材（２０，２１）による固定を、前記調整用ボルト（１２）に前記刃底との間に隔りを設けて螺合されてなる調整ボルト固定用部材（２０，２１）を、前記調整用ボルト（１２）の進み側へ押圧・固定することにより行う。
更に、前記調整用ボルト（１２）の前記調整ボルト固定用部材（２０，２１）による押圧・固定を、前記調整ボルト固定用部材（２０，２１）に遊嵌された締付けボルト（１６）を、前記刃底に螺合、締め付けることにより行う。
上記調整用ボルトの固定方法を実施するベニヤ単板切削用ナイフは、刃先高さを調整するためにナイフ（１０）の刃底に螺合した調整用ボルト（１２）と、該調整用ボルト（１２）に並設され且つ前記刃底に螺合した締付けボルト（１６）と、前記調整用ボルト（１２）と螺合し前記締付けボルト（１６）を遊嵌する調整ボルト固定用部材（２０，２１）を前記刃底と間を隔てて設けたものである。特に、ベニヤ単板切削用ナイフにおける前記刃底との間を隔てて設ける手段を、該調整用ボルト（１２）に並設され且つ前記調整ボルト固定用部材（２０）に螺合した間隔調整ボルト（２６）によって行う。
【０００５】
次に、本発明における前記調整用ボルト（１２）の前記調整ボルト固定用部材（２１）による固定を、前記刃底に当接又は近接し且つ側部の一部分が前記調整用ボルト（１２）に当接又は近接してなる調整ボルト固定用部材（２１）を、前記調整用ボルト（１２）の進み方向と直交する方向に変形させ、該調整ボルト固定用部材（２１）を前記調整用ボルト（１２）の外周に押圧・固定することにより行う。なお「近接」とは、他の部材を介して連続的に当接している場合を含む。
また、前記調整用ボルト（１２）の前記調整ボルト固定用部材（２１）による変形・固定を、前記調整ボルト固定用部材（２１）に遊嵌された締付けボルト（１６）を、前記刃底に螺合、締め付けることにより行う。
更に、前記調整用ボルト（１２）の前記調整ボルト固定用部材（２１）による変形・固定を、前記調整ボルト固定用部材（２１）の締付けボルト（１６）を、前記調整用ボルト（１２）の進み方向と直交する方向に締め付けることにより行う。
上記調整用ボルトの固定方法を実施するベニヤ単板切削用ナイフは、刃先高さを調整するために該ナイフ（１０）の刃底に螺合した調整用ボルト（１２）と、該調整用ボルト（１２）に並設され且つ該刃底に螺合した締付けボルト（１６）と、側部の一部分が前記調整用ボルト（１２）に当接又は近接し且つ前記締付けボルト（１６）を遊嵌する調整ボルト固定用の弾性部材（２１）を前記刃底に当接又は近接するように設けたものである。
【０００６】
【実施例】
本発明に係るベニヤ単板切削用ナイフを図面に基いて説明する。
図１は、研磨済みナイフの刃先高さを設定するナイフセッティングゲージ１の正面図である。１０はベニヤレースの鉋台にセットされるベニヤ単板切削用ナイフであって、刃先高さまでの長さＬを、ナイフ１０の刃底に螺合する調整用ボルト１２で調整する。
図２は図１の側面図であって、ナイフ１０の横幅方向に所定間隔をおいて複数の調整用ボルト１２が螺合されている。
【０００７】
実施例１
図３はそのうちの１つの調整用ボルト付近の拡大図であって、ナイフ１０の刃底には、調整用ボルト１２を螺合する調整ボルト挿入用ネジ孔１４と、締付けボルト１６を螺合する締付けボルト挿入用ネジ孔１８がそれぞれ穿設されている。２０は剛性のある固定用部材であって、一方の側部には調整用ボルト１２を螺合する調整ボルト挿通用ネジ孔２２が、中央部には締付けボルト１６を遊嵌してそのねじ頭が係合する締付けボルト遊嵌用挿通孔２４が、他方の側部には調整用ボルト１２に並設され刃底との間を隔てる間隔調整ボルト２６を螺合する間隔調整ボルト挿入用ネジ孔２７がそれぞれ設けられ、常態において調整ボルト固定用部材２０は刃底に接触しないよう調整用ボルト１２に設けられている。
【０００８】
この調整ボルト固定用部材２０を用いた固定方法は、先ず刃先を上方に向けた状態においてナイフ１０の刃先高さを特定高さにするために調整用ボルト１２を回して調整する。この時調整用ボルト１２を回動すると調整ボルト固定用部材２０も回動しようとするが、締付けボルト１６に遊嵌されているからそのまま調整用ボルト１２を回すことができる。なお、上方に向けた状態は、ナイフをベニヤレースに取り付けたように刃厚を示す面におけるナイフの長手方向と直交する方向に傾けて調整する場合であってもよい。
次に、間隔調整ボルト２６により調整ボルト固定用部材２０を刃底と平行又は略平行に調整した後締付けボルト１６を締付けると、締付けボルト１６の頭部は調整ボルト固定用部材２０を押圧し、しかも該調整ボルト固定用部材２０を刃底に対し平行又は略平行状態を保持したまま調整用ボルト１２の進行方向に調整用ボルト１２を押圧する。調整用ボルト１２は刃底に対して直交した状態を保ちながら、図４に示すように調整用ボルト１２の進み側フランク１２ｂと刃底の挿入用ネジ孔１４の下側フランク１０ａとを接触させた状態で、押圧・固定される。この為、上述のように螺合された調整用ボルト１２は、切削中に高荷重が加わっても調整ボルト１２に曲がりが発生しないので、刃先高さが変わることはない。
【０００９】
実施例２
上記実施例１では、刃底との間の隔たりを間隔調整ボルト２６により調整しており、特に調整用ボルト１２が刃底より長く出ている場合に固定した調整用ボルト１２が刃底に対し傾きが生じ切削中に高荷重が加わって曲がることにより刃先高さが変わることを防止するのに有効であるが、図５に示すように調整ボルト固定用部材２０に間隔調整ボルト２６を用いずに調整ボルト固定用部材２０により調整用ボルト１２を螺合、締付けることもできる。
実施例３
また、上記実施例１，２では、調整ボルト固定用部材２０における調整ボルト挿通用ネジ孔２２の片側に締付けボルト遊嵌用挿通孔２４を並設しているが、図６のように調整ボルト挿通用ネジ孔２２の両側、又は調整ボルト挿通用ネジ孔２２の３側面以上に締付けボルト遊嵌用挿通孔２４を複数設ければ、調整用ボルト１２の進行方向への押圧力が均等に分散され、上記実施例１と同様に調整用ボルト１２は刃底に対して直交して固定されるとともに固定力を高めることができる。同様に、隣接する複数の調整用ボルトに対し１つの調整ボルト固定用部材を共用するために、調整ボルト固定用部材の剛性力にもよるが、ナイフ１０の横幅方向に長くなった調整ボルト固定用部材に少なくとも１つずつ調整用ボルト及び締付けボルトを設けることにより、締付けボルトの個数を減少でき調整作業の簡略化ができる。
実施例４
上記実施例では、調整用ボルト１２に対しそのねじ部を兼用して螺合するための調整ボルト挿通用ネジ孔２２を設けているが、図７のように調整用ボルト１２のねじ部に半割り部２８を設け、その半割り部２８に調整ボルト固定用部材２０の一端を係合して調整用ボルト１２の進行方向へ押圧力を与えて固定することもできる。本実施例では、調整用ボルト１２の進み側へ調整ボルト固定用部材２０による押圧・固定が簡単に解除できるので交換が容易である。
【００１０】
実施例５
上記実施例１ないし４は調整ボルト固定用部材の材質が剛性材であったのに対し、実施例５以下ではシリコンゴム等のゴム材の他、ばね材等の弾性材とすることに特長がある。
調整ボルト固定用部材２１は、図８のように一端を、刃先高さを調整するためにナイフ１０の刃底に螺合した調整用ボルト１２に当接する位置に設け、他端には刃底に螺合した締付けボルト１６を遊嵌する締付けボルト遊嵌用挿通孔２４を設けて、締付けボルト１６によりワッシャー１７を介して刃底に近接させている。なお、調整ボルト固定用部材２１の一端は、常態において調整用ボルト１２に近接せずワッシャーを介さず当接してもよい。
【００１１】
この弾性体の調整ボルト固定用部材２１を用いた固定方法は、ナイフ１０の刃先高さを特定高さにするために調整用ボルト１２を調整完了後、締付けボルト１６を刃底に螺合、締付けることにより、図９のように調整ボルト固定用部材２１を変形させるから、調整用ボルト１２を進行方向と直交する方向に押圧して固定することができる。
【００１２】
実施例６
上記実施例５では締付けボルト１６を調整用ボルト１２に対し並設しているが、図１０のように刃底から突出する取り付け部１１を延設し、締付けボルト１６を調整用ボルト１２に対し直交するように設け、その締付けボルト１６の先端に調整ボルト固定用部材２１を固着又は回動自在に係着することにより、締付けボルト１６の頭部と刃底との挟持による変形によらず、直接に調整用ボルト１２の進行方向と直交する方向に押圧して、変形・固定することもできる。特に締付け前に調整ボルト固定用部材２１を調整用ボルト１２に当接させず、近接する位置に設ければ調整用ボルト１２の回動が楽である。また、締付けボルト１６と調整ボルト固定用部材２１との間にばね部材を介して調整ボルト固定用部材２１を付勢し強く固定してもよい。
なお、締付けボルト１６の回動により調整ボルト固定用部材２１の一端が、調整用ボルト１２に当接又は近接する位置からずれないために、実施例５では調整ボルト固定用部材２１に締付けボルト１６を遊嵌させ、実施例６では調整ボルト固定用部材２１を締付けボルト１６に固着又は回動自在に係着させているが、調整ボルト固定用部材を刃底に固着、接着又は係着するとともに、調整ボルト固定用部材の一端を、並設した締付けボルト１６の頭部で直接に又はてこ部材を介して調整用ボルトの進み方向と直交する方向に変形させ、調整ボルト固定用部材の他端を調整用ボルトの外周に押圧・固定することができる。
【００１３】
実施例７
また、上記実施例５では調整用ボルト１２の片側に当接又は近接するために調整ボルト固定用部材２１の一端を配置させたが、図１１のように調整用ボルト１２を挿通する遊嵌孔２３を調整ボルト固定用部材２１に設けることで、締付けボルト１６の締付けにより、調整用ボルトの１２の全周にわたって調整ボルト固定用部材２１を圧着させ固定することができる。
【００１４】
【発明の効果】
本発明によれば、調整用ボルトでの調整後、ナイフをバックラッシュ分、押し上げる従来の補助ナットに代わって、調整用ボルトの進み側フランクと前記刃底の調整ボルト挿入用ネジ孔の下側フランクとを接触させた状態を維持しつつ固定するから、刃先高さに狂いが生じず、刃先高さ調整が精度よく行える。また、ナイフセッティングゲージでベニヤ単板切削用ナイフの刃先高さを調整する時に調整用ボルトを逆に緩めては補助ナットを締めることを繰返す熟練を要した調整が不要となる。
また、ナイフが切削中に受ける下向きの荷重は、ナイフの下側フランクから調整用ボルトの進み側フランクに対しかかるから、従来のような補助ナットの緩みや変形を招くことがなく、長時間のベニヤレースの運転が可能となる。
そして、ベニヤ単板切削用ナイフにおいて調整ボルト固定用部材に間隔調整ボルトを設けているから、長い調整ボルトが刃底に対し直交せず切削中に高荷重がかかって曲がり刃先高さが変わることを防止できる。従って、ナイフ刃先が下がることにより発生する切削ベニヤ単板の切削面の荒れ、いわゆる肌荒現象が起きないので、品質の良い単板が得られる。特に、薄いベニヤ単板を切削する場合には有効である。
次に調整用ボルトの固定方法においては、調整用ボルトを調整ボルト固定用部材によって刃底に固定するために、調整用ボルトに刃底との間に隔りを設けて螺合されてなる調整ボルト固定用部材を、調整用ボルトの進み側へ押圧・固定するから、調整用ボルト及び調整ボルト固定用部材等の自重が大きい場合でもナイフセッティングゲージからベニヤレースに移動させる間に調整用ボルトの進み側と反対方向へずれることがない。また、前記調整ボルト固定用部材による押圧・固定を、前記調整ボルト固定用部材に遊嵌された締付けボルトを、刃底に螺合、締め付けることにより行うから、締付け力が経時変化しにくい。
【００１５】
更に、調整用ボルトを調整ボルト固定用部材によって刃底に固定するために、前記刃底に当接又は近接し且つ側部の一部分が前記調整用ボルトに当接又は近接してなる調整ボルト固定用部材を、前記調整用ボルトの進み方向と直交する方向に変形させ、前記調整用ボルトの外周に押圧・固定するから、調整ボルトの進行方向に過剰負荷を付与せず調整した刃先高さに影響がない上、調整用ボルト及び調整ボルト固定用部材等の自重が小さい場合調整ボルト固定用部材は小さくなり、ベニヤ単板切削用ナイフを軽量化できる。また、前記調整ボルト固定用部材による変形・固定を、前記調整ボルト固定用部材に遊嵌された締付けボルトを、前記刃底に螺合、締め付けることにより、又は前記調整ボルト固定用部材の締付けボルトを、前記調整用ボルトの進み方向と直交する方向に締め付けることにより行うから、経時変化した調整ボルト固定用部材の交換が容易である。
【図面の簡単な説明】
【図１】本発明に係る研磨済みベニヤ単板切削用ナイフの刃先高さを設定するナイフセッティングゲージの正面図である。
【図２】図１の側面図である。
【図３】１組の調整用ボルト等の断面拡大図である。
【図４】図３のねじ山の説明図である。
【図５】実施例２の説明図である。
【図６】実施例３の説明図である。
【図７】実施例４の説明図である。
【図８】実施例５の締付けボルトを締付ける前の説明図である。
【図９】図９の締付け後の説明図である。
【図１０】実施例６の説明図である。
【図１１】実施例７の説明図である。
【図１２】従来のベニヤ単板切削用ナイフをベニヤレースに取り付けた正面図である。
【図１３】従来の補助ナットを締付ける前のねじ山の説明図である。
【図１４】図１３の締付け後のねじ山の説明図である。
【符号の説明】
１・・ナイフセッティングゲージ、１０・・ナイフ、１２・・調整用ボルト、１４・・調整ボルト挿入用ネジ孔、１６・・締付けボルト、１８・・締付けボルト挿入用ネジ孔、２０、２１・・調整ボルト固定用部材、２２・・調整ボルト挿通用ネジ孔、２３・・遊嵌孔、２４・・締付けボルト遊嵌用挿通孔、２６・・間隔調整ボルト、２８・・半割り部。[0001]
[Industrial applications]
The present invention relates to a method for fixing a cutting edge height adjusting bolt in a veneer veneer cutting knife used in veneer lace, and a veneer veneer cutting knife.
More specifically, when setting the blade height of the polished knife using the knife setting gauge, while simplifying the adjustment work performed by turning the adjustment bolt provided on the knife blade bottom, and after the adjustment is completed This is to prevent the cutting edge height from being deviated due to the loosening of the bolt and the cutting resistance during cutting.
[0002]
[Prior art]
As shown in FIG. 12, a conventional veneer veneer cutting knife for cutting raw wood has an adjusting bolt 12 screwed to the blade bottom of the knife 10, and the adjusting bolt 12 has an auxiliary nut 12a for a double nut. It is screwed. In other words, after the adjustment work is performed by turning the adjustment bolt 12 to make the height of the blade edge of the polished knife 10 a specific height, the auxiliary nut 12a is tightened to fix the adjustment bolt 12.
In this adjustment method, as shown in FIG. 13 which is an enlarged view of the adjustment bolt 12 and the auxiliary nut 12a, first, after the adjustment bolt 12 is adjusted, the pressure side flanks which are directly subjected to the load are adjusted in a state where they are in contact with each other. A flank 12b of the leading end of the bolt 12 and a lower flank 10a of the screw hole 14 for the adjusting bolt at the bottom of the knife 10. Next, when the auxiliary nut 12a comes into contact with the blade bottom and is turned around, the knife 10 is pushed up, and the load on the leading flank 12b of the adjusting bolt 12 due to the weight of the knife 10 is eliminated, and the blade bottom of the knife 10 It is in a state of being placed on the auxiliary nut 12a. When the auxiliary nut 12a is further turned, the upper flank 10b of the knife 10 comes into contact with the follower flank 12c of the adjusting bolt 12 as shown in FIG. The leading flank 12b of the bolt 12, the trailing flank 12d of the auxiliary nut 12a, the trailing flank 12c of the adjusting bolt 12, and the upper flank 10b of the knife 10.
[0003]
[Problems to be solved by the invention]
First, after the adjustment with the adjustment bolt, the knife is pushed up by the auxiliary nut by the amount of backlash due to its fixation, so that the height of the cutting edge becomes irregular. For this reason, when adjusting the height of the cutting edge of the veneer veneer cutting knife, it is necessary to perform re-adjustment that requires skill to repeat loosening the adjustment bolt and tightening the auxiliary nut. Second, the knife receives a downward load during cutting, but a load is applied to the trailing flank of the auxiliary nut having a small number of threads on the leading flank of the adjusting bolt, causing loosening and deformation of the auxiliary nut. For this reason, there has been a problem that the cutting edge of the knife 10 is lowered during cutting. In addition, increasing the number of adjustment bolts and auxiliary nuts to disperse the load increases the number of adjustment operations and is troublesome.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problem of the present invention, a configuration of the present invention is a fixing method of a cutting edge height adjusting bolt (12) screwed to a blade bottom of a veneer veneer cutting knife (10), comprising: After the height adjustment by the adjusting bolt (12) is completed with the fins facing upward, the leading flank (12b) of the adjusting bolt (12) and the screw hole (14) for adjusting bolt insertion at the blade bottom are inserted. The adjustment bolt (12) is fixed by the adjustment bolt fixing members (20, 21) while maintaining the state of contact with the lower flank (10a). Note that “upward” also includes a case where the veneer race is inclined in a direction perpendicular to the longitudinal direction of the knife when the knife is mounted. "Leading flank" refers to the slope of the thread facing the direction of travel of the bolt when screwing in. "Lower flank" refers to the screw for adjusting bolt insertion at the bottom of the blade with the blade edge facing upward. The lower slope of the thread of the hole.
The adjustment bolt (12) is fixed by the adjustment bolt fixing member (20, 21), and is screwed to the adjustment bolt (12) with a gap provided between the adjustment bolt (12) and the blade bottom. This is performed by pressing and fixing the adjustment bolt fixing members (20, 21) to the advancing side of the adjustment bolt (12).
Further, pressing and fixing of the adjusting bolt (12) by the adjusting bolt fixing member (20, 21) is performed by tightening the tightening bolt (16) loosely fitted to the adjusting bolt fixing member (20, 21). This is performed by screwing and tightening the blade bottom.
The veneer veneer cutting knife that implements the adjusting bolt fixing method includes an adjusting bolt (12) screwed to a blade bottom of the knife (10) to adjust a blade edge height, and an adjusting bolt (12). A tightening bolt (16) juxtaposed to the blade bottom and screwed to the blade bottom; and an adjusting bolt fixing member (20, 20) screwed with the adjusting bolt (12) and loosely fitting the tightening bolt (16). 21) is provided at a distance from the blade bottom. In particular, means for providing a space between the blade bottom of the veneer veneer cutting knife is provided in parallel with the adjusting bolt (12) and is screwed to the adjusting bolt fixing member (20). This is performed according to (26).
[0005]
Next, the adjustment bolt (12) of the present invention is fixed by the adjustment bolt fixing member (21) so that the adjustment bolt (12) is in contact with or close to the blade bottom and a part of a side portion is fixed to the adjustment bolt (12). The adjusting bolt fixing member (21) which is brought into contact with or close to the adjusting bolt (12) is deformed in a direction orthogonal to the advance direction of the adjusting bolt (12), and the adjusting bolt fixing member (21) is fixed to the adjusting bolt ( This is performed by pressing and fixing to the outer periphery of 12). Note that “approaching” includes a case where the members are continuously in contact with each other via another member.
The deformation and fixing of the adjusting bolt (12) by the adjusting bolt fixing member (21) is performed by tightening the tightening bolt (16) loosely fitted to the adjusting bolt fixing member (21) to the blade bottom. It is performed by screwing and tightening.
Further, the adjusting bolt (12) is deformed and fixed by the adjusting bolt fixing member (21), and the tightening bolt (16) of the adjusting bolt fixing member (21) is changed to the adjusting bolt (12). This is done by tightening in the direction perpendicular to the advance direction.
A veneer veneer cutting knife that implements the adjusting bolt fixing method includes an adjusting bolt (12) screwed to a blade bottom of the knife (10) to adjust a blade edge height, and an adjusting bolt (12). A tightening bolt (16) juxtaposed to (12) and screwed to the blade bottom, and a part of the side abuts or approaches the adjusting bolt (12) and the tightening bolt (16) is loosely fitted. An elastic member (21) for fixing the adjustment bolt is provided so as to abut or approach the blade bottom.
[0006]
【Example】
A veneer veneer cutting knife according to the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a knife setting gauge 1 for setting a blade edge height of a polished knife. Reference numeral 10 denotes a veneer veneer cutting knife set on a plane table of a veneer lace, and adjusts the length L up to the height of the cutting edge with an adjusting bolt 12 screwed to the blade bottom of the knife 10.
FIG. 2 is a side view of FIG. 1, in which a plurality of adjustment bolts 12 are screwed at predetermined intervals in the width direction of the knife 10.
[0007]
Example 1
FIG. 3 is an enlarged view of one of the adjustment bolts and the vicinity thereof. An adjustment bolt insertion screw hole 14 for screwing the adjustment bolt 12 and a tightening bolt 16 are screwed on the blade bottom of the knife 10. Screw holes 18 for inserting fastening bolts are respectively formed. Reference numeral 20 denotes a rigid fixing member. An adjusting bolt insertion screw hole 22 for screwing the adjusting bolt 12 is provided on one side, and a tightening bolt 16 is loosely fitted in a central portion of the screw head. A screw hole for screwing a gap adjustment bolt into which a gap adjustment bolt 26 is provided, which is provided in parallel with the adjustment bolt 12 on the other side and is screwed with a gap adjustment bolt 26 separating the blade bottom. 27 are provided, and the adjusting bolt fixing member 20 is provided on the adjusting bolt 12 so as not to contact the blade bottom in a normal state.
[0008]
In the fixing method using the adjusting bolt fixing member 20, first, the adjusting bolt 12 is adjusted by turning the adjusting bolt 12 in order to set the cutting edge height of the knife 10 to a specific height in a state where the cutting edge is directed upward. At this time, when the adjusting bolt 12 is rotated, the adjusting bolt fixing member 20 also attempts to rotate. However, since the adjusting bolt 12 is loosely fitted to the tightening bolt 16, the adjusting bolt 12 can be turned as it is. In addition, the state which turned upward may be the case where it adjusts by inclining in the direction orthogonal to the longitudinal direction of the knife in the surface which shows blade thickness like a knife attached to the veneer race.
Next, after adjusting the adjusting bolt fixing member 20 to be parallel or substantially parallel to the blade bottom by the spacing adjusting bolt 26 and then tightening the tightening bolt 16, the head of the tightening bolt 16 presses the adjusting bolt fixing member 20; In addition, the adjustment bolt 12 is pressed in the traveling direction of the adjustment bolt 12 while maintaining the adjustment bolt fixing member 20 parallel or substantially parallel to the blade bottom. As shown in FIG. 4, the adjustment bolt 12 is brought into contact with the leading flank 12 b of the adjustment bolt 12 and the lower flank 10 a of the screw hole 14 for insertion of the blade bottom while maintaining the state perpendicular to the blade bottom. Pressed and fixed in the state. For this reason, since the adjusting bolt 12 screwed as described above does not bend even if a high load is applied during cutting, the cutting edge height does not change.
[0009]
Example 2
In the first embodiment, the gap between the blade and the blade bottom is adjusted by the gap adjusting bolt 26. In particular, when the adjustment bolt 12 is longer than the blade bottom, the adjustment bolt 12 fixed to the blade bottom is used. Although it is effective to prevent a change in the height of the cutting edge due to a high load applied during the cutting and bending during cutting, as shown in FIG. 5, the interval adjusting bolt 26 is not used for the adjusting bolt fixing member 20. The adjusting bolt 12 can be screwed and tightened by the adjusting bolt fixing member 20.
Example 3
Further, in the first and second embodiments, the insertion holes 24 for loosely fitting the tightening bolts are provided side by side on one side of the screw holes 22 for inserting the adjustment bolts in the adjustment bolt fixing member 20, but as shown in FIG. If a plurality of tightening bolt loose insertion holes 24 are provided on both sides of the insertion screw hole 22 or on three or more sides of the adjustment bolt insertion screw hole 22, the pressing force of the adjustment bolt 12 in the traveling direction is evenly distributed. Then, similarly to the first embodiment, the adjusting bolt 12 is fixed orthogonally to the blade bottom and can increase the fixing force. Similarly, in order to share one adjusting bolt fixing member for a plurality of adjacent adjusting bolts, depending on the rigidity of the adjusting bolt fixing member, the adjusting bolt fixing member elongated in the lateral width direction of the knife 10 is used. By providing at least one adjusting bolt and one tightening bolt on each member, the number of tightening bolts can be reduced and the adjusting operation can be simplified.
Example 4
In the above-described embodiment, the adjusting bolt 12 is provided with the adjusting bolt insertion screw hole 22 for screwing together with the adjusting bolt 12, but as shown in FIG. A split portion 28 may be provided, and one end of the adjusting bolt fixing member 20 may be engaged with the half split portion 28 to apply a pressing force in the traveling direction of the adjusting bolt 12 and fix the same. In this embodiment, the pressing and fixing by the adjusting bolt fixing member 20 to the advance side of the adjusting bolt 12 can be easily released, so that the replacement is easy.
[0010]
Example 5
In the first to fourth embodiments, the material of the adjusting bolt fixing member is a rigid material, whereas the fifth and subsequent embodiments are characterized by using an elastic material such as a spring material in addition to a rubber material such as silicon rubber. is there.
As shown in FIG. 8, the adjustment bolt fixing member 21 is provided at one end at a position where it comes into contact with the adjustment bolt 12 screwed to the blade bottom of the knife 10 in order to adjust the blade edge height. An insertion hole 24 for loosely fitting a tightening bolt 16 to which the screw 16 is screwed is provided, and the tightening bolt 16 is brought close to the blade bottom via a washer 17 through the washer 17. Note that one end of the adjustment bolt fixing member 21 may be brought into contact with the adjustment bolt 12 in a normal state without approaching the washer.
[0011]
The fixing method of the elastic body using the adjusting bolt fixing member 21 is such that after the adjusting bolt 12 is adjusted in order to make the cutting edge height of the knife 10 a specific height, the tightening bolt 16 is screwed to the blade bottom. By tightening, the adjusting bolt fixing member 21 is deformed as shown in FIG. 9, so that the adjusting bolt 12 can be pressed and fixed in a direction orthogonal to the traveling direction.
[0012]
Example 6
In the fifth embodiment, the tightening bolts 16 are arranged in parallel with the adjusting bolts 12. However, as shown in FIG. By providing the adjusting bolt fixing member 21 at the tip of the tightening bolt 16 so as to be fixed or rotatably engaged with the end of the tightening bolt 16, regardless of the deformation due to the clamping of the head of the tightening bolt 16 and the blade bottom, It can also be deformed and fixed by directly pressing in the direction perpendicular to the direction of travel of the adjusting bolt 12. In particular, if the adjusting bolt fixing member 21 is not brought into contact with the adjusting bolt 12 before tightening and is provided at a position close to the adjusting bolt 12, the turning of the adjusting bolt 12 is easy. Further, the adjusting bolt fixing member 21 may be urged and strongly fixed between the tightening bolt 16 and the adjusting bolt fixing member 21 via a spring member.
In the fifth embodiment, the one end of the adjustment bolt fixing member 21 does not deviate from the position where the adjustment bolt fixing member 21 abuts on or approaches the adjustment bolt 12 due to the rotation of the tightening bolt 16. In the sixth embodiment, the adjusting bolt fixing member 21 is fixedly or rotatably engaged with the tightening bolt 16 in the sixth embodiment, but the adjusting bolt fixing member is fixedly attached, adhered or engaged with the blade bottom. One end of the adjustment bolt fixing member is deformed directly at the head of the juxtaposed bolt 16 or through a lever member in a direction orthogonal to the advance direction of the adjustment bolt, and the other end of the adjustment bolt fixing member is deformed. Can be pressed and fixed to the outer periphery of the adjusting bolt.
[0013]
Example 7
In the fifth embodiment, one end of the adjustment bolt fixing member 21 is disposed so as to abut or approach one side of the adjustment bolt 12, but a loose fitting hole through which the adjustment bolt 12 is inserted as shown in FIG. By providing the adjusting bolt fixing member 21 on the adjusting bolt fixing member 21, the adjusting bolt fixing member 21 can be pressed and fixed over the entire circumference of the adjusting bolt 12 by tightening the tightening bolt 16.
[0014]
【The invention's effect】
According to the present invention, after adjustment with the adjustment bolt, the knife is backlashed and replaced by a conventional auxiliary nut that pushes up the knife, and the leading flank of the adjustment bolt and the lower side of the adjustment bolt insertion screw hole at the blade bottom. Since the flank is fixed while being kept in contact with the flank, there is no deviation in the height of the cutting edge, and the cutting edge height can be adjusted accurately. Further, when adjusting the cutting edge height of the veneer veneer cutting knife with the knife setting gauge, it is not necessary to perform a skillful adjustment in which the adjusting bolt is loosened in reverse and the auxiliary nut is repeatedly tightened.
In addition, the downward load that the knife receives during cutting is applied from the lower flank of the knife to the leading flank of the adjusting bolt, so that the auxiliary nut is not loosened or deformed as in the conventional case, and a long time is applied. Driving of veneer races becomes possible.
And, since the spacing adjustment bolt is provided on the adjustment bolt fixing member in the veneer veneer cutting knife, the long adjustment bolt is not orthogonal to the blade bottom, and a high load is applied during cutting and the bending edge height changes. Can be prevented. Therefore, a rough cut surface of the veneer veneer, which is caused by the lowering of the blade edge, that is, a so-called rough surface phenomenon does not occur, so that a veneer of high quality can be obtained. In particular, it is effective when cutting a thin veneer veneer.
Next, in the method of fixing the adjusting bolt, the adjusting bolt is screwed with a gap between the adjusting bolt and the blade bottom in order to fix the adjusting bolt to the blade bottom by the adjusting bolt fixing member. Since the bolt fixing member is pressed and fixed to the advancing side of the adjusting bolt, even when the adjusting bolt and the adjusting bolt fixing member etc. have a large own weight, the adjusting bolt is moved from the knife setting gauge to the veneer race. It does not shift in the opposite direction to the leading side. Further, the pressing and fixing by the adjusting bolt fixing member is performed by screwing and tightening the tightening bolt loosely fitted to the adjusting bolt fixing member to the blade bottom, so that the tightening force does not easily change with time.
[0015]
Further, in order to fix the adjusting bolt to the blade bottom by the adjusting bolt fixing member, the adjusting bolt fixed to be in contact with or close to the blade bottom and a part of the side portion to be in contact with or close to the adjusting bolt. Member is deformed in a direction perpendicular to the advance direction of the adjustment bolt, and pressed and fixed to the outer periphery of the adjustment bolt, so that the adjusted blade height is adjusted without applying an excessive load in the advance direction of the adjustment bolt. There is no influence, and when the weight of the adjusting bolt and the adjusting bolt fixing member is small, the adjusting bolt fixing member becomes small, and the veneer veneer cutting knife can be reduced in weight. The deformation and fixing by the adjusting bolt fixing member may be performed by screwing and tightening a tightening bolt loosely fitted to the adjusting bolt fixing member to the blade bottom, or by tightening the adjusting bolt fixing member. Is performed by tightening in the direction perpendicular to the advance direction of the adjusting bolt, so that the adjusting bolt fixing member that has changed with time can be easily replaced.
[Brief description of the drawings]
FIG. 1 is a front view of a knife setting gauge for setting a blade edge height of a polished veneer veneer cutting knife according to the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is an enlarged sectional view of a set of adjusting bolts and the like.
FIG. 4 is an explanatory view of the thread shown in FIG. 3;
FIG. 5 is an explanatory diagram of a second embodiment.
FIG. 6 is an explanatory diagram of a third embodiment.
FIG. 7 is an explanatory diagram of a fourth embodiment.
FIG. 8 is an explanatory diagram before a fastening bolt according to a fifth embodiment is tightened.
FIG. 9 is an explanatory view after tightening of FIG. 9;
FIG. 10 is an explanatory diagram of a sixth embodiment.
FIG. 11 is an explanatory diagram of a seventh embodiment.
FIG. 12 is a front view of a conventional veneer veneer cutting knife attached to a veneer race.
FIG. 13 is an explanatory view of a thread before a conventional auxiliary nut is tightened.
FIG. 14 is an explanatory view of the screw thread after tightening of FIG. 13;
[Explanation of symbols]
1. · Knife setting gauge, 10 ·· Knife, 12 ·· Adjustment bolt, 14 ·· Adjustment bolt insertion screw hole, 16 ··· Tightening bolt, 18 ··· Tightening bolt insertion screw hole, 20, 21 ··· Adjustment bolt fixing member, 22... Adjustment bolt insertion screw hole, 23 .. loose fitting hole, 24... Tightening bolt loose insertion hole, 26... Spacing adjustment bolt, 28.

Claims

A fixing method of a blade height adjusting bolt (12) screwed to a blade bottom of a veneer veneer cutting knife (10), wherein the height of the blade (12) is adjusted by the adjusting bolt (12) when the blade edge is directed upward. After completion of the adjustment, while maintaining the state in which the leading flank (12b) of the adjusting bolt (12) and the lower flank (10a) of the adjusting bolt insertion screw hole (14) in the blade bottom are in contact with each other, A method of fixing a cutting edge height adjusting bolt of a veneer veneer cutting knife, wherein the adjusting bolt (12) is fixed by adjusting bolt fixing members (20, 21).

The adjusting bolt (12) is fixed by the adjusting bolt fixing member (20, 21), and the adjusting bolt (12) is screwed with a gap between the adjusting bolt (12) and the blade bottom. 2. The fixing method of a cutting edge height adjusting bolt in a veneer veneer cutting knife according to claim 1, wherein the fixing member (20, 21) is pressed and fixed to a leading side of the adjusting bolt (12).

The adjusting bolt (12) is pressed and fixed by the adjusting bolt fixing member (20, 21), and the tightening bolt (16) loosely fitted to the adjusting bolt fixing member (20, 21) is fixed to the blade. 3. The method of fixing a cutting edge height adjusting bolt of a veneer veneer cutting knife according to claim 2, wherein the bolt is screwed to the bottom and tightened.

An adjusting bolt (12) screwed to the blade bottom of the knife (10) to adjust the blade edge height; and a tightening bolt (16) arranged in parallel with the adjusting bolt (12) and screwed to the blade bottom. ) And adjusting bolt fixing members (20, 21) which are screwed with the adjusting bolts (12) and loosely fit the tightening bolts (16) are provided at a distance from the blade bottom. Knife for veneer veneer cutting.

The means for providing a space between the blade and the blade bottom is provided by an interval adjusting bolt (26) which is arranged in parallel with the adjusting bolt (12) and is screwed to the adjusting bolt fixing member (20, 21). 5. The knife for cutting veneer veneer according to 4.

The fixing of the adjusting bolt (12) by the adjusting bolt fixing member (21) is performed by abutting or approaching the blade bottom and a part of a side portion abutting or approaching the adjusting bolt (12). The adjusting bolt fixing member (21) is deformed in a direction orthogonal to the advance direction of the adjusting bolt (12), and the adjusting bolt fixing member (21) is pressed against the outer periphery of the adjusting bolt (12). The fixing method of the cutting edge height adjusting bolt of the veneer veneer cutting knife according to claim 1, which is performed by fixing.

The deformation and fixing of the adjusting bolt (12) by the adjusting bolt fixing member (21) is performed by screwing a tightening bolt (16) loosely fitted to the adjusting bolt fixing member (21) to the blade bottom. 7. The method for fixing a cutting edge height adjusting bolt of a veneer veneer cutting knife according to claim 6, which is performed by tightening.

The adjusting bolt (12) is deformed and fixed by the adjusting bolt fixing member (21), and the tightening bolt (16) of the adjusting bolt fixing member (21) is moved in the advance direction of the adjusting bolt (12). 7. The method for fixing a cutting edge height adjusting bolt of a veneer veneer cutting knife according to claim 6, wherein the bolt is tightened in a direction perpendicular to the cutting direction.

An adjusting bolt (12) screwed to the blade bottom of the knife (10) to adjust the height of the blade edge; and a tightening bolt (12) juxtaposed to the adjusting bolt (12) and screwed to the blade bottom. 16), and an elastic member (21) for fixing the adjustment bolt, in which a part of the side portion abuts or approaches the adjustment bolt (12) and loosely fits the tightening bolt (16), abuts on the blade bottom. Or a veneer veneer cutting knife provided so as to be close to.