JPH0966503A - Interchangeable blade type finger cutter - Google Patents
Interchangeable blade type finger cutterInfo
- Publication number
- JPH0966503A JPH0966503A JP24885795A JP24885795A JPH0966503A JP H0966503 A JPH0966503 A JP H0966503A JP 24885795 A JP24885795 A JP 24885795A JP 24885795 A JP24885795 A JP 24885795A JP H0966503 A JPH0966503 A JP H0966503A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- blade body
- fixing
- cutter
- eccentric cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は木材加工特にフィン
ガジョイントと称する継手部の加工に用いるカッタに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter used for wood processing, particularly for processing joints called finger joints.
【０００２】[0002]
【従来の技術】木材を長尺化する技術として、木材端部
にジグザグ状の多数のフィンガを形成し、同一形状に形
成された端部どうしを相互に組み合わせて接合するフィ
ンガジョイントがある。このフィンガジョイントには種
々の形式があるが、同形状かつ同切削径の単位カッタを
切削幅に応じて積層して使用する形式の分割形フィンガ
カッタに図１０に示すような替刃式の単位カッタを積層
してなるフィンガカッタがある。2. Description of the Related Art As a technique for lengthening a piece of wood, there is a finger joint in which a large number of zigzag fingers are formed at the ends of the wood and the ends having the same shape are combined and joined together. There are various types of finger joints, but a split-type finger cutter of a type in which unit cutters of the same shape and the same cutting diameter are stacked and used according to the cutting width is used as a replacement blade type unit as shown in FIG. There is a finger cutter formed by stacking cutters.
【０００３】この単位カッタの単位カッタ本体１０１
は、刃体１０２の厚みｔの２倍の厚みに形成されてい
て、両側面の中心点対称の外周部２個所に、刃体１０２
を装着するための刃体装着凹部１０１ｂが刃体１０２の
厚みｔの深さに刻設されている。この両側面に刻設され
た刃体装着凹部１０１ｂは互いに９０°位相がずれてい
る。刃体装着凹部１０１ｂ内に着脱可能に基部が装着さ
れる刃体１０２は皿ねじ１０３により固定されており、
単位カッタ本体１０１には積層したときに刃体１０２の
回転方向の位相をずらして配置するためのピン１０４と
ピン穴１０１ｃとが設けられている。The unit cutter body 101 of this unit cutter
Is formed to have a thickness twice as large as the thickness t of the blade body 102, and the blade body 102 is formed at two outer peripheral portions symmetrical with respect to the center point on both side surfaces.
A blade body mounting recess 101b for mounting the blade body is formed at a depth of the thickness t of the blade body 102. The blade body mounting recesses 101b formed on both side surfaces are 90 ° out of phase with each other. The blade body 102 having a base portion detachably mounted in the blade body mounting recess 101b is fixed by a countersunk screw 103,
The unit cutter body 101 is provided with a pin 104 and a pin hole 101c for arranging the blade bodies 102 with the phases shifted in the rotational direction when stacked.
【０００４】更に単位カッタ本体１０１には刃体１０２
の背面に続く部分に断面がテーパ形状の突起部１０１ｄ
が設けられている。また回転工具の刃体を固定する構造
として図１２に示すものがある。このものはフィンガカ
ッタではないが、厚みの小さい刃体１１３の背面に位置
決め用の三角溝１１３ａを形成し刃体１１３と偏心カム
１１５との間に押さえ部材１１７を介して刃体をカッタ
本体１１１に固定するものである。Further, the blade body 102 is provided on the unit cutter body 101.
101d having a tapered cross section in a portion following the back surface of the
Is provided. Further, there is a structure shown in FIG. 12 as a structure for fixing the blade body of the rotary tool. Although this is not a finger cutter, a triangular groove 113a for positioning is formed on the back surface of the blade body 113 having a small thickness, and the blade body is provided with a pressing member 117 between the blade body 113 and the eccentric cam 115. It is fixed to.
【０００５】[0005]
【発明が解決しようとする課題】従来の技術で述べた替
刃式単位カッタを積層してなるフィンガカッタは、単位
カッタ本体の刃体装着凹部に皿ねじにより刃体を固定す
る方法のため、実際に木材端部にフィンガ継手部の加工
を行ったあと、刃体１０２を単位カッタ本体１０１から
外してみると、刃体装着凹部１０１ｂの側壁面上の図１
１に示す位置にフレッチングコロージョンによる摩耗痕
が見つかった。特にフィンガ数を多数設けたフィンガ継
手を形成するため前記の単位カッタを１０枚以上積層し
たフィンガカッタでは、このフレッチングコロージョン
が顕著に見られた。The finger cutter formed by stacking the replaceable blade type unit cutters described in the prior art is a method of fixing the blade body to the blade body mounting recess of the unit cutter body with a countersunk screw. After actually processing the finger joint portion on the wood end portion, when the blade body 102 is detached from the unit cutter body 101, the side wall surface of the blade body mounting recess 101b shown in FIG.
A wear mark due to fretting corrosion was found at the position indicated by 1. This fretting corrosion was particularly noticeable in the finger cutter in which ten or more unit cutters were laminated in order to form a finger joint having a large number of fingers.
【０００６】フレッチングコロージョンの摩耗痕は刃体
装着凹部１０１ｂ内における刃体１０２の回転方向の高
周波振動が原因と考えられる他、積層枚数が多いフィン
ガカッタでは特に機械系と木材の切削振動等が複雑に作
用し、皿ねじで固定された部分より外周側の刃部が厚み
方向のねじれ振動をも起こしているのではないかと考え
られ、皿ねじ１０３を強く締め上げても刃体１０２が反
る危険性が増すだけで対策にならないことが分かった。It is considered that the wear marks of fretting corrosion are caused by high frequency vibration in the rotating direction of the blade 102 in the blade mounting recess 101b, and particularly in the finger cutter having a large number of laminated sheets, the cutting vibration of the mechanical system and wood is complicated. It is thought that the blade portion on the outer peripheral side of the portion fixed by the countersunk screw also causes torsional vibration in the thickness direction, and the blade body 102 warps even if the countersunk screw 103 is strongly tightened. It turns out that it is just a risk and not a countermeasure.
【０００７】従って、フィンガ継手部の加工で、刃体装
着凹部のフレッチングコロージョンによる摩耗が進行す
れば、カッタ本体を繰り返し使用する上で精度維持の点
で問題であり、刃体１０２の固定精度が悪くなり、加工
品質が低下するという問題を有している。Therefore, if the wear of the blade body mounting recess due to fretting corrosion progresses in the processing of the finger joint, it is a problem in maintaining the accuracy when the cutter body is repeatedly used, and the accuracy of fixing the blade body 102 becomes low. There is a problem that the processing quality deteriorates and the processing quality deteriorates.
【０００８】また、刃体を偏心カムで固定する従来技術
のものは、刃体の厚み方向への移動を止めるため刃体の
背面に三角溝１１３ａを形成し、カッタ本体１１１の刃
体取付け座に形成した三角突起１１１ａに契合している
ものの、契合の深さが浅く、更に押さえ部材１１７，偏
心カム１１５，カッタ本体１１１の相互間も三角溝と三
角突起で契合しているだけなので、全体として厚み方向
の剛性が弱くフィンガカッタに用いることができないも
のであり、押さえ部材を介する分、構造も複雑である。Further, in the prior art in which the blade body is fixed by an eccentric cam, a triangular groove 113a is formed on the back surface of the blade body to stop the movement of the blade body in the thickness direction, and the blade body mounting seat of the cutter body 111 is formed. Although it engages with the triangular protrusion 111a formed in the above, the depth of the engagement is shallow, and further, the pressing member 117, the eccentric cam 115, and the cutter body 111 are only engaged with each other by the triangular groove and the triangular protrusion. Since the rigidity in the thickness direction is weak, it cannot be used for a finger cutter, and the structure is complicated because the pressing member is interposed.
【０００９】本発明は従来の技術の有するこのような問
題点に鑑みなされたものであり、その目的とするところ
は、簡便でしかも確実かつ強固に刃体を単位カッタ本体
に固定することができる替刃式フィンガカッタを提供し
ようとするものである。The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to easily, surely and firmly fix the blade to the unit cutter body. It is intended to provide a replaceable blade finger cutter.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
に本発明の替刃式フィンガカッタは、中心に穴を有しほ
ぼ円形板状で外周部に刃体を有する複数枚の単位カッタ
を積層してなる分割形の替刃式フィンガカッタにおい
て、前記単位カッタは少なくとも単位カッタ本体と刃体
とからなり、単位カッタ本体に対し該刃体を側面から固
定する手段と前面から固定する手段とを設けたものであ
る。また、刃体を側面から固定する手段が該刃体の基部
を該基部の側面からねじにより固定する手段とするもの
である。また、刃体を側面から固定する手段が該刃体の
基部を該基部の側面に単位カッタ本体の側面を当接し単
位カッタ間で挟持することにより固定する手段とするも
のである。また、刃体を前面から固定する手段が該刃体
の基部を該基部の回転方向前側に隣接して設けたカム装
着凹部内の偏心カムにより直接固定する手段とするもの
である。In order to achieve the above object, a replaceable blade finger cutter according to the present invention comprises a plurality of unit cutters each having a hole at the center, a substantially circular plate shape, and a blade at the outer peripheral portion. In a split-type replaceable-finger finger cutter formed by stacking, the unit cutter includes at least a unit cutter body and a blade body, and means for fixing the blade body to the unit cutter body from a side surface and a means to fix the blade body from a front surface. Is provided. The means for fixing the blade body from the side surface is a means for fixing the base portion of the blade body from the side surface of the base portion with a screw. Further, the means for fixing the blade body from the side surface is a means for fixing the base portion of the blade body by abutting the side surface of the unit cutter body against the side surface of the base portion and sandwiching it between the unit cutters. Further, the means for fixing the blade body from the front surface is a means for directly fixing the base portion of the blade body by an eccentric cam in a cam mounting recess provided adjacent to the front side in the rotation direction of the base portion.
【００１１】上述のように構成されている替刃式フィン
ガカッタは、単位カッタ本体に装着された刃体を側面か
ら固定するとともに偏心カムにより回転後側に押し付
け、刃体を確実に固定するので、切削時の刃体の高周波
振動やねじれ振動が抑制され、フレッチングコロージョ
ンによる摩耗で刃体の固定精度が悪化することがなくな
り、良好な加工精度が長時間維持できる。In the replaceable blade type finger cutter constructed as described above, the blade body mounted on the unit cutter body is fixed from the side surface and is pressed to the rear side by the rotation by the eccentric cam to securely fix the blade body. High-frequency vibration and torsional vibration of the blade body during cutting are suppressed, and the blade body fixing accuracy is not deteriorated due to wear due to fretting corrosion, and good processing accuracy can be maintained for a long time.
【００１２】また、偏心カムの外周に該偏心カムの回転
角度を規制する円周切り欠き部を設け、カム装着凹部に
前記円周切り欠き部の端部と当接して位置決めを行うピ
ンを設け、偏心カムの固定解除角度位置と刃体を固定す
るための回転方向とを明確にすることもでき、円周切り
欠き部の一端を位置決めピンに当接することにより刃体
固定解除時の偏心カムの回転位置と、刃体固定時の偏心
カムの回転方向とを規制し、刃体固定時に刃体装着凹部
の基準となる回転方向の後壁面と底面とに確実に刃体の
背面と底端面とを押し付けることができる。Further, a circumferential notch for limiting the rotation angle of the eccentric cam is provided on the outer periphery of the eccentric cam, and a pin for positioning is provided in the cam mounting recess for contacting with the end of the circumferential notch. It is also possible to clarify the fixing release angular position of the eccentric cam and the rotation direction for fixing the blade body.By contacting one end of the circumferential notch with the positioning pin, the eccentric cam when releasing the blade body is fixed. The rotation position of the blade and the rotation direction of the eccentric cam when fixing the blade are regulated, and the back surface and bottom end surface of the blade are securely attached to the rear wall surface and the bottom surface in the rotation direction that is the reference of the blade mounting recess when fixing the blade. You can press and.
【００１３】[0013]
【発明の実施の形態】以下本発明の実施の形態を図面に
もとづいて説明する。 〔実施例１〕ほぼ円形板状の焼入れ調質された鋼材から
なる単位カッタ本体（以下単に本体と呼ぶ）１（図１）
は、図示しないフィンガ加工機の主軸に嵌合される主軸
穴２ａを有するスリーブ２を挿入するための中心穴１ａ
を有し、本体１の両側面のそれぞれの面の中心点対称の
外周部２個所に後述の刃体３（図２）を装着するための
側壁面１ｂと底面１ｃと前壁面１ｄ及び後壁面１ｅとか
らなる直径に対して傾斜した刃体装着凹部１Ａが、本体
１の厚みＴに対して１／２であり刃体の厚みｔの深さに
刻設されている。尚、前記底面１ｃと後壁面１ｅとは刃
体装着時の基準となる面で、本体１両側面の刃体装着凹
部１Ａは位相が互いに９０°ずれた角度位置に刻設され
ている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. [Embodiment 1] A unit cutter body (hereinafter simply referred to as a body) 1 made of a hardened and tempered steel material having a substantially circular plate shape 1 (FIG. 1)
Is a center hole 1a for inserting a sleeve 2 having a spindle hole 2a fitted in a spindle of a finger processing machine (not shown).
And a side wall surface 1b, a bottom surface 1c, a front wall surface 1d, and a rear wall surface for mounting a blade body 3 (FIG. 2), which will be described later, on two outer peripheral portions of the both sides of the main body 1 which are symmetrical with respect to the center point of each surface. The blade body mounting concave portion 1A that is inclined with respect to the diameter composed of 1e is carved to a depth of the thickness t of the blade body that is ½ of the thickness T of the main body 1. The bottom surface 1c and the rear wall surface 1e are surfaces that serve as a reference when the blade body is mounted, and the blade body mounting recesses 1A on both side surfaces of the main body 1 are engraved at angular positions whose phases deviate from each other by 90 °.
【００１４】更に、本体１には刃体装着凹部１Ａの回転
方向前側に前記前壁面１ｄに開口するカム装着凹部１Ｂ
が、本例では刃体装着凹部１Ａと同一深さ（Ｔ／２）刻
設されており、刃体装着凹部１Ａに続く刃袋部１ｆと、
刃体装着凹部１Ａに挿入された刃体３の背面３ｂ（図
２）に続く断面がテーパ状の突起部１ｇが設けられてい
る。更に本体１を積層したとき刃体３の回転方向の位相
を設定角度ずらして配置するためのピン４及びピン穴１
ｈが設けられている。Further, the main body 1 has a cam mounting recess 1B which is open to the front wall surface 1d on the front side in the rotational direction of the blade mounting recess 1A.
However, in this example, the same depth (T / 2) is engraved as the blade body mounting recess 1A, and the blade bag portion 1f following the blade body mounting recess 1A,
A projection 1g having a tapered cross section is provided following the back surface 3b (FIG. 2) of the blade 3 inserted into the blade mounting recess 1A. Furthermore, when the main body 1 is laminated, the pin 4 and the pin hole 1 for arranging the blade body 3 with the phase in the rotation direction shifted by a set angle
h is provided.
【００１５】刃体３は図２に示すように本体１の刃体装
着凹部１Ａに挿入する基部３Ａと、基部３Ａに続く刃部
３Ｂとからなり、基部３Ａには貫通穴３ａが穿設されて
いて、貫通穴３ａは片側から皿もみされている。この貫
通穴３ａに挿通される皿ねじ１０が本体１の刃体装着凹
部１Ａに穿設されているねじ穴１ｋに螺着されて刃体を
側面から固定するとともに回転中の刃体の飛び出しをも
防止する。As shown in FIG. 2, the blade body 3 comprises a base portion 3A to be inserted into the blade body mounting recess 1A of the main body 1 and a blade portion 3B following the base portion 3A, and a through hole 3a is formed in the base portion 3A. The dish of the through hole 3a is also seen from one side. The countersunk screw 10 inserted into the through hole 3a is screwed into the screw hole 1k formed in the blade body mounting recess 1A of the main body 1 to fix the blade body from the side surface and prevent the blade body from protruding during rotation. Also prevent.
【００１６】基部３Ａは本体１の刃体装着凹部１Ａに嵌
合可能な寸法に形成され、刃体３が後述の偏心カム５に
より押圧されたとき、刃体３の背面３ｂが刃体装着凹部
１Ａの基準となる後壁面１ｅに、また刃体３の底端面３
ｃが刃体装着凹部の基準となる底面１ｃに密着するよう
刃体装着凹部１Ａの後壁面１ｅの中間部にぬすみ１ｉ
が、また底面１ｃと後壁面１ｅ及び底面１ｃと前壁面１
ｄとのそれぞれのコーナ部にぬすみ１ｊが設けられてい
る。The base portion 3A is formed to have a size capable of being fitted into the blade body mounting recess 1A of the main body 1, and when the blade body 3 is pressed by an eccentric cam 5 described later, the back surface 3b of the blade body 3 is recessed in the blade body mounting recess. On the rear wall surface 1e serving as a reference for 1A, and the bottom end surface 3 of the blade body 3
A recess 1i is formed in the middle of the rear wall surface 1e of the blade body mounting recess 1A so that c closely contacts the bottom surface 1c that serves as a reference for the blade body mounting recess.
However, the bottom surface 1c and the rear wall surface 1e, and the bottom surface 1c and the front wall surface 1
Dullnesses 1j are provided at the respective corners of d and d.
【００１７】刃体３は被削材にテーパ形状の細溝を加工
することによりフィンガを形成するもので、刃先線３ｄ
はこれに合わせたテーパ形状となっており、Ｗは刃先先
端幅である。The blade 3 is for forming a finger by processing a taper-shaped fine groove in a work material, and a cutting edge line 3d.
Has a tapered shape corresponding to this, and W is the width of the tip of the cutting edge.
【００１８】スリーブ２は図４に示すように一端には丸
ナット６と螺合するねじ山２ｂが刻設され、他端に鍔２
ｃが一体に形成されている。この鍔２ｃにも本体１のピ
ン穴４が嵌合するピン穴２ｄが穿設されている。７はラ
イナである。尚、フィンガカッタの積層の違いにより、
ピン穴がライナ７に設けられる場合もある。また、鍔２
Ｃまたはライナ７にピン穴がなく積層時にピン４が干渉
する場合はそのピンを抜き取ってもよい。As shown in FIG. 4, the sleeve 2 has one end formed with a thread 2b to be screwed into the round nut 6, and the other end formed with a collar 2b.
c is formed integrally. This flange 2c is also provided with a pin hole 2d into which the pin hole 4 of the main body 1 fits. 7 is a liner. In addition, due to the difference in the stacking of finger cutters,
A pin hole may be provided in the liner 7. Also, Tsuba 2
If there is no pin hole in C or the liner 7 and the pin 4 interferes during stacking, the pin may be removed.
【００１９】偏心カム５は図３に示すように中心に六角
レンチ用の六角穴５ｂを有する円板状のカム本体の外周
１／２が円板と同一直径で中心がずれた偏心カム面５ａ
に削設されたもので、外周に回転角度を規制するための
切り欠き部５ｃが、カム本体とほぼ同心の円弧状に削設
されており、カム面５ａのほぼ１／２がこの切り欠き部
５ｃにより欠除されている。As shown in FIG. 3, the eccentric cam 5 has a disc-shaped cam body having a hexagonal hole 5b for a hexagonal wrench at the center, and the outer periphery 1/2 has the same diameter as the disc and the center is offset.
The cutout portion 5c for restricting the rotation angle is cut out on the outer periphery in an arc shape substantially concentric with the cam body, and about half of the cam surface 5a is cut out. It is omitted by the portion 5c.
【００２０】一方、本体１のカム装着凹部１Ｂは前記偏
心カム５が嵌挿可能な円形の座ぐり穴状に刻設されてい
て、偏心カム５はこの座ぐり穴状のカム装着凹部１Ｂの
外周壁面を案内として回転する。カム装着凹部１Ｂ内に
は位置決めピン８が植設されていて、偏心カム５が切り
欠き部５ｃの同心円部５ｄに近い端面５ｅが位置決めピ
ン８に当接するように回転したとき、切り欠き部５ｃが
刃体３の前端面３ｄの位置に来て刃体３の挿脱が可能と
なり、偏心カム５が位置決めピン８が端面５ｅから離れ
るように右又は左へ回転したとき、カム面５ａにより刃
体３が基準となる底面１ｃと後壁面１ｅとに強力に押圧
されるようになっている。On the other hand, the cam mounting recess 1B of the main body 1 is engraved in the shape of a circular counterbored hole into which the eccentric cam 5 can be inserted, and the eccentric cam 5 is formed in the counterbore-shaped cam mounting recess 1B. Rotate with the outer wall as a guide. A positioning pin 8 is planted in the cam mounting recess 1B, and when the eccentric cam 5 rotates so that the end surface 5e near the concentric circle portion 5d of the cutout portion 5c contacts the positioning pin 8, the cutout portion 5c is formed. Comes to the position of the front end face 3d of the blade body 3, the blade body 3 can be inserted and removed, and when the eccentric cam 5 rotates to the right or left so that the positioning pin 8 separates from the end face 5e, the blade surface is moved by the cam surface 5a. 3 is strongly pressed against the bottom surface 1c and the rear wall surface 1e which serve as a reference.
【００２１】更に、本実施例では刃体３が基準となる面
に安定して押し付けられるように、偏心カム５の刃体基
部の前面３ｄに接触するカム面５ａの幅方向中央に円周
溝５ｆが設けられている。また、フィンガカッタの分解
組付時に偏心カム５がカム装着凹部１Ｂより脱落するの
を防止するためカム装着凹部１Ｂの側壁面にマグネット
９が埋め込まれている（図１）。Further, in this embodiment, a circumferential groove is formed in the center of the cam surface 5a in contact with the front surface 3d of the blade base of the eccentric cam 5 in the width direction so that the blade 3 can be pressed stably against the reference surface. 5f is provided. Further, a magnet 9 is embedded in the side wall surface of the cam mounting recess 1B in order to prevent the eccentric cam 5 from falling out of the cam mounting recess 1B during disassembly and assembly of the finger cutter (FIG. 1).
【００２２】また、刃体３を傷めず、かつ押さえ部材等
を用いた場合のようにカッタ本体に複雑な構造を要する
ことなく強固に刃物３を本体に固定できるよう偏心カム
５の材質としてＳ４５Ｃ焼準材が使用されている。従っ
て刃体３を固定するとカム面５ａの当接部がわずか塑性
変形してなじみ、不安定な点当たりではなくある程度の
面当たりで刃体基部の前面３ｄに当接し基準面となる後
壁面１ｅと底面１ｃに刃体３を押し付けることができ
る。Further, S45C is used as the material of the eccentric cam 5 so that the blade 3 can be firmly fixed to the main body without damaging the blade 3 and without requiring a complicated structure in the main body of the cutter as in the case of using a pressing member or the like. Normalized material is used. Therefore, when the blade body 3 is fixed, the contact portion of the cam surface 5a is slightly plastically deformed and conforms, and the rear wall surface 1e serving as the reference surface is brought into contact with the front surface 3d of the blade base portion with some surface contact rather than unstable point contact. The blade 3 can be pressed against the bottom surface 1c.
【００２３】スリーブ２（図４）に単位カッタを複数枚
挿入して一組のフィンガカッタを形成する方法は、先ず
単位カッタ本体１の刃体装着凹部１Ａに刃体３を挿入
し、ねじ穴１ｋに飛び出し防止を兼ねた皿ねじ１０を螺
合して刃体３を本体１に固定する。この状態で偏心カム
５を切り欠き部端面５ｅが位置決めピン８より離れる方
向に回転させ、刃体３の基部３Ａを前面から回転後側に
押し付け、二つの基準面１ｃ，１ｅに押圧固定する。次
いで、反対側面に前述と同様に刃体３を固定する。In the method of forming a set of finger cutters by inserting a plurality of unit cutters into the sleeve 2 (FIG. 4), first insert the blade body 3 into the blade body mounting recess 1A of the unit cutter body 1 and screw holes. The blade body 3 is fixed to the main body 1 by screwing a countersunk screw 10 also serving as a protrusion prevention to 1k. In this state, the eccentric cam 5 is rotated in the direction in which the end surface 5e of the cutout portion is separated from the positioning pin 8, the base portion 3A of the blade body 3 is pressed from the front surface to the rear side after rotation, and fixed to the two reference surfaces 1c and 1e. Then, the blade body 3 is fixed to the opposite side surface as described above.
【００２４】次いで、刃体３を装着した単位カッタをス
リーブ２に挿入する。このとき最初の一枚はピン４がピ
ン穴２ｄに挿入されて回り止めとなり、次からはピン４
が前の単位カッタのピン穴１ｈに挿入されて所定の位相
角度だけずれた状態に設定される。こうして次々にカッ
タ本体を積層し、最後にスリーブ２に螺合する鍔６でラ
イナ７を介して締めつけ固定される。Next, the unit cutter with the blade body 3 attached is inserted into the sleeve 2. At this time, the first one pin 4 is inserted into the pin hole 2d to prevent rotation, and the pin 4
Is inserted into the pin hole 1h of the previous unit cutter and is set to be displaced by a predetermined phase angle. In this way, the cutter bodies are laminated one after another, and finally, the collar 6 screwed onto the sleeve 2 is tightened and fixed via the liner 7.
【００２５】刃体３が損傷したり、寿命となった場合に
は前記フィンガカッタの形成工程とは逆の工程で刃体３
を外し交換する。尚、本例では本体の各側面に刃体装着
凹部を２個所ずつ中心点対称位置に設けたが、これに限
定されるものではない。また刃体相互間の位相のずれ
や、偏心カムの材質なども同様である。When the blade body 3 is damaged or has reached the end of its life, the blade body 3 is subjected to a process reverse to the process for forming the finger cutter.
Remove and replace. In this example, two blade body mounting recesses are provided on each side surface of the main body at central point symmetrical positions, but the invention is not limited to this. The same applies to the phase shift between blade bodies and the material of the eccentric cam.
【００２６】−切削試験− 本実施例を実際に集成材を製造するためフィンガカッタ
として使用し性能を確認するための実験を行った。被削
材はヒノキで、加工後のフィンガ継手部は図５に示す形
状（被削材幅Ｈ＝約１０５ｍｍ，フィンガ長ｆ＝１１．
４ｍｍ，フィンガ先端幅ｗ＝０．６ｍｍ，ピッチｐ＝４
ｍｍ）であり送材方向に複数枚の被削材を積層して加工
する。供試するフィンガカッタは厚みＴ＝８ｍｍの単位
カッタを１４枚積層したもので、切削条件は送材速度Ｆ
＝１２ｍ／分，フィンガカッタ回転数Ｎ＝５０００ｒｐ
ｍ，フィンガカッタ径＝１６０ｍｍである。-Cutting Test- An experiment was carried out to confirm the performance by using this example as a finger cutter for actually manufacturing the laminated wood. The work material is cypress, and the finger joint portion after processing has the shape shown in FIG. 5 (work material width H = about 105 mm, finger length f = 11.1.
4 mm, finger tip width w = 0.6 mm, pitch p = 4
mm), and a plurality of work materials are laminated in the material feeding direction for processing. The finger cutter to be tested is a stack of 14 unit cutters with a thickness T = 8 mm, and the cutting conditions are the feeding speed F.
= 12 m / min, finger cutter rotation speed N = 5000 rp
m, finger cutter diameter = 160 mm.
【００２７】試験の結果、フレッチングコロージョンが
発生することなく、また前記した従来技術のフィンガカ
ッタでは刃体交換１回当たり７乃至８日間の寿命であっ
たものが、本発明のフィンガカッタでは１０日間の寿命
が得られた。このことにより、刃体の振動が抑制されて
加工精度が向上しフィンガジョイントの嵌合が良くな
り、刃体寿命が延びることも分かった。As a result of the test, no fretting corrosion occurred, and the finger cutter of the prior art described above had a life of 7 to 8 days per blade change, but the finger cutter of the present invention has a life of 10 days. The life of was obtained. It was also found that this suppresses the vibration of the blade body, improves the machining accuracy, improves the fitting of the finger joint, and extends the life of the blade body.
【００２８】〔実施例２〕実施例２は刃体の側面から固
定する手段及び回転中の飛び出し防止構造が異なる例
で、他は実施例１と同じである。図６に示す刃体１３に
は基部１３Ａに貫通穴１３ａが穿設され、図７に示すよ
うに本体１１の刃体装着凹部１１Ａは本体の厚みＴに対
して１／２であり刃体１３の厚みｔより僅かに浅い深さ
に刻設されており、飛び出し防止用ピン１２が刃体装着
凹部１１Ａ内に植設されている。従って刃体１３は本体
１１とともにスリーブ２に積層され鍔６で締めつけ固定
されると側面から本体１１で挟持固定される。また貫通
穴１３ａにピン１２が挿入された状態で単位カッタ本体
１１に装着されているのでフィンガカッタの回転で刃体
１３が飛び出すことがない。[Embodiment 2] Embodiment 2 is the same as Embodiment 1 except for the means for fixing it from the side surface of the blade and the structure for preventing protrusion during rotation. A through hole 13a is formed in the base portion 13A of the blade body 13 shown in FIG. 6, and as shown in FIG. 7, the blade body mounting recess 11A of the main body 11 is ½ of the thickness T of the main body, Is slightly shallower than the thickness t, and the pop-out prevention pin 12 is planted in the blade mounting recess 11A. Therefore, when the blade body 13 is laminated on the sleeve 2 together with the main body 11 and fixed by being fastened with the collar 6, the blade body 13 is clamped and fixed by the main body 11 from the side surface. Further, since the pin 12 is inserted into the through hole 13a and attached to the unit cutter body 11, the blade body 13 does not pop out by the rotation of the finger cutter.
【００２９】また、図８に示すように本体２１の刃体装
着凹部の前壁面２１ｄと後壁面２１ｅとを外周側が狭い
テーパに形成し、刃体２３の基部２３Ａの対応面を刃体
装着部に合わせたテーパに形成しても同様の飛び出し防
止効果が得られる。Further, as shown in FIG. 8, the front wall surface 21d and the rear wall surface 21e of the blade mounting recess of the main body 21 are formed in a taper on the outer peripheral side, and the corresponding surface of the base 23A of the blade 23 corresponds to the blade mounting portion. Even if the taper is formed in accordance with the above, the same effect of preventing the protrusion can be obtained.
【００３０】〔実施例３〕実施例３は偏心カムの構造の
異なる例で、他は実施例１と同一である。図９に示すよ
うに偏心カム１５は外周の１／２が偏心カム面１５ａに
形成され、ほぼ中心に六角レンチ用の六角穴１５ｂが穿
設されているだけの極めてシンプルな形状である。この
偏心カム１５を使用する場合は実施例１の偏心カム５の
ように外周に切り欠き部５ｃがないので、左，右いずれ
の方向に回転しても刃体３を刃体装着凹部１Ａの基準と
なる後壁面１ｅに押圧固定することができるが、基準と
なる底面１ｃにも同時に押圧するためには一方向回転の
みであり、その点を注意すれば十分使用に耐える。な
お、１５ｃは偏心最大点を示す印である。[Embodiment 3] Embodiment 3 is an example in which the structure of the eccentric cam is different, and is otherwise the same as Embodiment 1. As shown in FIG. 9, the eccentric cam 15 has a very simple shape in which half of the outer circumference is formed on the eccentric cam surface 15a and a hexagonal hole 15b for a hexagonal wrench is formed at the substantially center thereof. When this eccentric cam 15 is used, since there is no notch 5c on the outer periphery unlike the eccentric cam 5 of the first embodiment, the blade body 3 can be rotated in either the left or right direction so that the blade body 3 of the blade body mounting recess 1A is rotated. It can be pressed and fixed to the reference rear wall surface 1e, but in order to press the reference bottom surface 1c at the same time, only one-direction rotation is necessary. Note that 15c is a mark indicating the maximum eccentricity point.
【００３１】[0031]
【発明の効果】本発明の替刃式フィンガカッタは上述の
とおり構成されているので次に記載する効果を奏する。
単位カッタ本体の外周部に設けられている刃体装着凹部
に装着された刃体をねじや隣接するカッタ本体の当接に
より側面から固定すると共に、回転方向前側に該刃体装
着凹部に開口するカム装着凹部を設け、カム装着凹部に
装着した偏心カムにより刃体の基部を刃体装着凹部の後
壁面に押し付け固定するようにしたので、切削中の刃体
の回転方向の高周波振動や厚み方向のねじれ振動を抑制
する。特に基部と共に刃部の背面をも刃体装着凹部の後
壁面に押し付け固定したものはこれら振動の抑制が確実
である。従ってフレッチングコロージョンによる刃体装
着凹部の側面壁面の摩耗が防止され、フィンガカッタを
繰り返し使用しても精度の維持ができ、またフィンガジ
ョイント部の嵌合もよくなり、刃体の切削寿命をも更に
延長することができる。Since the replaceable-blade type finger cutter of the present invention is constructed as described above, it has the following effects.
The blade body mounted in the blade body mounting concave portion provided on the outer peripheral portion of the unit cutter body is fixed from the side surface by a screw or abutting of the adjacent cutter body, and is opened in the blade body mounting concave portion on the front side in the rotation direction. Since the cam mounting recess is provided and the base of the blade is pressed and fixed to the rear wall surface of the blade mounting recess by the eccentric cam mounted in the cam mounting recess, high-frequency vibration in the rotating direction of the blade during cutting and the thickness direction Suppresses torsional vibration. In particular, those in which the back surface of the blade portion together with the base portion are pressed against and fixed to the rear wall surface of the blade body mounting recess can reliably suppress these vibrations. Therefore, abrasion of the side wall surface of the blade mounting recess due to fretting corrosion can be prevented, accuracy can be maintained even if the finger cutter is repeatedly used, and the fitting of the finger joint can be improved, further improving the cutting life of the blade. It can be extended.
【００３２】また、偏心カムに円周切り欠き部を設け、
カム装着凹部内に位置決めピンを設けて偏心カムの回転
位置と方向を規制し、固定解除角度位置と刃体を固定す
るための回転方向とが分かるようにしたので、刃体を刃
体装着凹部の基準面となる二面に確実に押圧固定するこ
とが可能となる。Further, the eccentric cam is provided with a circumferential notch,
A positioning pin is provided in the cam mounting recess to regulate the rotation position and direction of the eccentric cam, and the fixing release angular position and the rotation direction for fixing the blade can be identified. It is possible to surely press and fix the two surfaces that are the reference surfaces of.
【図１】本発明の実施の形態の実施例１の替刃式フィン
ガカッタの単位カッタの図で、（ａ）は側面図、（ｂ）
は正面図、（ｃ）は（ａ）のＢ−Ｂ線視断面図である。FIG. 1 is a view of a unit cutter of a replaceable-blade type finger cutter according to a first embodiment of the present invention, in which (a) is a side view and (b) is a side view.
Is a front view and (c) is a sectional view taken along line BB of (a).
【図２】同じく実施例１の刃体の図で、（ａ）は側面
図、（ｂ）は正面図、（ｃ）は刃先方向から見た図であ
る。2A and 2B are views of the blade body of the first embodiment, FIG. 2A is a side view, FIG. 2B is a front view, and FIG.
【図３】同じく実施例１の偏心カムの図で、（ａ）は側
面図、（ｂ）は正面図である。3A and 3B are views of the eccentric cam of Embodiment 1, where FIG. 3A is a side view and FIG. 3B is a front view.
【図４】スリーブの図で、（ａ）は正面図、（ｂ）は側
面図である。FIG. 4 is a view of a sleeve, in which (a) is a front view and (b) is a side view.
【図５】切削試験で加工したフィンガ継手部の斜視図で
ある。FIG. 5 is a perspective view of a finger joint portion processed in a cutting test.
【図６】実施例２の刃体の図で、（ａ）は側面図、
（ｂ）は正面図である。FIG. 6 is a diagram of a blade according to a second embodiment, in which (a) is a side view,
(B) is a front view.
【図７】実施例２の単位カッタの部分図で、（ａ）は刃
体を取外した状態を示し、（ｂ）は刃体が装着された状
態を示す図である。7A and 7B are partial views of the unit cutter according to the second embodiment, in which FIG. 7A shows a state in which the blade is removed, and FIG. 7B shows a state in which the blade is attached.
【図８】実施例２の刃体の形態が異なる他の例の単位カ
ッタの部分図である。FIG. 8 is a partial view of a unit cutter of another example in which the form of the blade body according to the second embodiment is different.
【図９】実施例３の偏心カムの図で、（ａ）は側面図、
（ｂ）は正面図である。FIG. 9 is a diagram of an eccentric cam according to a third embodiment, in which (a) is a side view,
(B) is a front view.
【図１０】従来の技術の単位カッタの図で、（ａ）は側
面図、（ｂ）は正面図、（ｃ）は（ａ）のＡ−Ａ線視断
面図である。FIG. 10 is a view of a unit cutter of a conventional technique, (a) is a side view, (b) is a front view, and (c) is a sectional view taken along line AA of (a).
【図１１】従来の技術の説明図で、フレッチングコロー
ジョンの発生し易い部位を示す図である。FIG. 11 is an explanatory diagram of a conventional technique and is a diagram showing a portion where fretting corrosion is likely to occur.
【図１２】従来の技術の偏心カムによる刃体固定手段の
図で、（ａ）は側面図、（ｂ）は平面図である。12A and 12B are views of a blade fixing means using a conventional eccentric cam, in which FIG. 12A is a side view and FIG. 12B is a plan view.
１ 単位カッタ本体 １Ａ 刃体装着凹部 １Ｂ カム装着凹部 １ｂ 側壁面 １ｃ 底面 １ｄ 前壁面 １ｅ 後壁面 ２ スリーブ ３，１３，２３ 刃体 ３Ａ，１３Ａ，２３Ａ 基部 ３Ｂ 刃部 ３ｂ 背面 ３ｃ 底端面 ５，１５ 偏心カム ５ａ，１５ａ カム面 ５ｃ 切り欠き部 ８ 位置決めピン ９ マグネット １０ 皿ねじ 1 unit cutter body 1A blade mounting recess 1B cam mounting recess 1b side wall surface 1c bottom surface 1d front wall surface 1e rear wall surface 2 sleeve 3,13,23 blade body 3A, 13A, 23A base portion 3B blade portion 3b back surface 3c bottom end surface 5,15 Eccentric cam 5a, 15a Cam surface 5c Notch 8 Positioning pin 9 Magnet 10 Flat head screw
Claims (5)
刃体を有する複数枚の単位カッタを積層してなる分割形
の替刃式フィンガカッタにおいて、前記単位カッタは少
なくとも単位カッタ本体と刃体とからなり、単位カッタ
本体に対し該刃体を側面から固定する手段と前面から固
定する手段とを設けたことを特徴とする替刃式フィンガ
カッタ。1. A split-type replaceable finger cutter comprising a plurality of unit cutters each having a hole at the center and a substantially circular plate shape and a blade body at the outer peripheral portion, wherein the unit cutters are at least the unit cutters. A replaceable-blade type finger cutter comprising a main body and a blade body, and means for fixing the blade body from a side surface to the unit cutter body and a means for fixing the blade body from a front surface.
基部を該基部の側面からねじにより固定する手段である
ことを特徴とする請求項１に記載の替刃式フィンガカッ
タ。2. A replaceable blade finger cutter according to claim 1, wherein the means for fixing the blade body from the side surface is means for fixing the base portion of the blade body from the side surface of the base portion with a screw.
基部を該基部の側面に単位カッタ本体の側面を当接し単
位カッタ間で挟持することにより固定する手段であるこ
とを特徴とする請求項１に記載の替刃式フィンガカッ
タ。3. The means for fixing the blade body from the side surface is a means for fixing the base portion of the blade body by abutting the side surface of the unit cutter body against the side surface of the base portion and sandwiching it between the unit cutters. The replaceable blade finger cutter according to claim 1.
基部を該基部の回転方向前側に隣接して設けたカム装着
凹部内の偏心カムにより直接固定する手段であることを
特徴とする請求項１乃至３の何れか１項に記載の替刃式
フィンガカッタ。4. The means for fixing the blade body from the front surface is a means for directly fixing the base portion of the blade body by an eccentric cam in a cam mounting recess provided adjacent to the front side in the rotation direction of the base portion. The replaceable blade finger cutter according to any one of claims 1 to 3.
を規制する円周切り欠き部を設け、カム装着凹部内に前
記円周切り欠き部の端部と当接して位置決めを行うピン
を設け、偏心カムの固定解除角度位置と刃体を固定する
ための回転方向とを明確にしたことを特徴とする請求項
４に記載の替刃式フィンガカッタ。5. A circumferential cutout portion for restricting a rotation angle of the eccentric cam is provided on the outer circumference of the eccentric cam, and a pin for positioning by contacting an end portion of the circumferential cutout portion in a cam mounting recess is provided. The replaceable blade finger cutter according to claim 4, wherein the finger cutter cutter is provided, and the fixing release angular position of the eccentric cam and the rotation direction for fixing the blade body are clarified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24885795A JP3153745B2 (en) | 1995-08-31 | 1995-08-31 | Replaceable blade finger cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24885795A JP3153745B2 (en) | 1995-08-31 | 1995-08-31 | Replaceable blade finger cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0966503A true JPH0966503A (en) | 1997-03-11 |
| JP3153745B2 JP3153745B2 (en) | 2001-04-09 |
Family
ID=17184464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24885795A Expired - Lifetime JP3153745B2 (en) | 1995-08-31 | 1995-08-31 | Replaceable blade finger cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3153745B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT406842B (en) * | 1998-12-21 | 2000-09-25 | Sperl Josef | Dovetailing machine |
| JP4977205B2 (en) * | 2007-07-27 | 2012-07-18 | 兼房株式会社 | Finger joint cutter |
| WO2014180454A1 (en) * | 2013-05-04 | 2014-11-13 | Miroslav Benes | Shell-type milling cutter with replaceable blades for wood and wood materials |
-
1995
- 1995-08-31 JP JP24885795A patent/JP3153745B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT406842B (en) * | 1998-12-21 | 2000-09-25 | Sperl Josef | Dovetailing machine |
| JP4977205B2 (en) * | 2007-07-27 | 2012-07-18 | 兼房株式会社 | Finger joint cutter |
| WO2014180454A1 (en) * | 2013-05-04 | 2014-11-13 | Miroslav Benes | Shell-type milling cutter with replaceable blades for wood and wood materials |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3153745B2 (en) | 2001-04-09 |
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