JP2001105230A - Cutting tool - Google Patents
Cutting toolInfo
- Publication number
- JP2001105230A JP2001105230A JP28176899A JP28176899A JP2001105230A JP 2001105230 A JP2001105230 A JP 2001105230A JP 28176899 A JP28176899 A JP 28176899A JP 28176899 A JP28176899 A JP 28176899A JP 2001105230 A JP2001105230 A JP 2001105230A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- fitting
- shank
- cutting
- insertion hole
- 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
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、切削部および軸部
を有する切刃本体部と、前記切刃本体部が接合されるシ
ャンク部とを備える切削用工具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting tool including a cutting blade body having a cutting portion and a shaft, and a shank portion to which the cutting blade body is joined.
【０００２】[0002]
【従来の技術】一般的に、リーマやドリル等の切削用工
具では、超硬材で構成される切刃部分と鉄系材で構成さ
れるシャンク部分とを、ロウ付けにより接合する構造が
採用されている。具体的には、図６に示すように、従来
の切削用工具１は、超硬材製切刃部分２とスチール製シ
ャンク部分３とを備えており、このシャンク部分３に
は、インロウ部分を構成する孔部４が所定の深さまで形
成されている。この孔部４の直径は、切刃部分２の嵌合
部（軸部）５の直径よりも０．１ｍｍ程度大径に設定さ
れており、前記孔部４と前記嵌合部５との隙間６にロウ
材７が導入されることにより、切刃部分２とシャンク部
分３とがロウ付け固定されることになる。2. Description of the Related Art Generally, a cutting tool such as a reamer or a drill employs a structure in which a cutting edge portion made of a super hard material and a shank portion made of an iron material are joined by brazing. Have been. Specifically, as shown in FIG. 6, a conventional cutting tool 1 includes a cutting edge portion 2 made of cemented carbide material and a shank portion 3 made of steel. The constituting hole 4 is formed to a predetermined depth. The diameter of the hole 4 is set to be about 0.1 mm larger than the diameter of the fitting portion (shaft portion) 5 of the cutting blade portion 2, and the gap between the hole 4 and the fitting portion 5 is set. When the brazing material 7 is introduced into 6, the cutting edge portion 2 and the shank portion 3 are brazed and fixed.
【０００３】ところが、孔部４と嵌合部５との間には、
周回する隙間６が設けられるため、切刃部分２とシャン
ク部分３とを同軸上に正確に位置決め固定することは極
めて困難であり、加熱、芯修正および冷却を繰り返し行
う必要があった。しかしながら、インロウ部分が何度も
繰り返し加熱されると、ロウ付け層内にガスや気泡が発
生してロウの濡れ性が低下するとともに、素材品質が劣
化してしまい、所望の品質を有する切削用工具１を得る
ことができないという問題があった。However, between the hole 4 and the fitting part 5,
Since the orbiting gap 6 is provided, it is extremely difficult to accurately position and fix the cutting blade portion 2 and the shank portion 3 coaxially, and it has been necessary to repeatedly perform heating, core correction, and cooling. However, when the brazing portion is heated repeatedly, gas and air bubbles are generated in the brazing layer, and the wettability of the brazing material is reduced, and the quality of the material is deteriorated. There is a problem that the tool 1 cannot be obtained.
【０００４】しかも、切刃部分２とシャンク部分３との
芯出しが、１回のロウ付け作業で達成されないため、後
に研磨工程によって前記切刃部分２と前記シャンク部分
３の軸芯を出す作業が必要となっている。さらに、研磨
工程において軸芯を出したとしても、ロウ付け層の厚さ
にばらつきがあると、切刃部分２に曲がり等が生じてし
まうという不具合があった。In addition, since the centering of the cutting edge portion 2 and the shank portion 3 cannot be achieved by one brazing operation, the work of centering the cutting edge portion 2 and the shank portion 3 later by a polishing process is performed. Is needed. Furthermore, even if the axis is taken out in the polishing step, if the thickness of the brazing layer varies, the cutting edge portion 2 may be bent or the like.
【０００５】そこで、例えば、特開平１−１５３２３０
号公報に開示されているように、粉末押し出し成形法に
より周面全部にスパイラル状の刃形が形成された一次成
形素材を成形し、次いでこれを焼結する一方、内周面に
上記刃形のスパイラルに合うスパイラル溝が形成された
筒体を形成し、この筒体のスパイラル溝中に上記一次成
形素材の内側のスパイラル状刃部分を螺着し、螺着面を
ロウ付けしてこの筒体をシャンクとし、以後、必要な研
削、研磨を施す超硬工具の製法が知られている。Therefore, for example, Japanese Patent Application Laid-Open No.
As disclosed in Japanese Patent Laid-Open Publication No. H06-209, a primary molding material having a spiral blade shape formed on the entire peripheral surface by a powder extrusion molding method, and then sintering the same, the above-described blade shape is formed on the inner peripheral surface. A spiral groove that fits the spiral groove is formed, a spiral blade portion inside the primary molding material is screwed into the spiral groove of the cylindrical body, and a screwing surface is brazed to form the cylindrical body. There has been known a method of manufacturing a carbide tool in which a body is formed into a shank and subjected to necessary grinding and polishing.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
従来技術では、シャンク部分を構成する筒体の内周面に
刃形のスパイラルを螺着するためのスパイラル溝部が形
成されており、前記筒体と刃形部分とを同軸状に正確に
芯出しするためには、前記スパイラル溝を高精度に形成
しなければならない。これにより、スパイラル溝の加工
作業が相当に煩雑化するとともに、この形成作業に熟練
を要するという問題が指摘されている。However, in the above-mentioned prior art, a spiral groove for screwing a blade-shaped spiral is formed on the inner peripheral surface of the cylindrical body constituting the shank portion. The spiral groove must be formed with high precision in order to accurately center the blade and the blade-shaped portion coaxially. As a result, it has been pointed out that the spiral groove processing operation becomes considerably complicated and that the formation operation requires skill.
【０００７】本発明はこの種の問題を解決するものであ
り、切刃本体部とシャンク部とを高精度かつ容易に芯出
しするとともに、ロウ付け品質の低下等を有効に阻止
し、簡単な構成を有しかつ高品質な切削用工具を提供す
ることを目的とする。SUMMARY OF THE INVENTION The present invention solves this kind of problem. In this invention, the cutting blade main body portion and the shank portion are easily centered with high precision, and a reduction in brazing quality is effectively prevented. An object of the present invention is to provide a high-quality cutting tool having a configuration.
【０００８】[0008]
【課題を解決するための手段】本発明に係る切削用工具
では、切削部および軸部を有する切刃本体部と、前記切
刃本体部が接合されるシャンク部とを備えるとともに、
前記シャンク部は、挿入孔部と嵌合孔部とが同軸的に連
通形成されている。そして、切刃本体部の軸部が挿入孔
部に挿入された状態で、この軸部の端部が嵌合孔部に嵌
合されると、前記軸部と前記挿入孔部との間に設けられ
る隙間にロウ材が供給され、前記軸部がシャンク部にロ
ウ付け固着される。A cutting tool according to the present invention comprises a cutting blade body having a cutting portion and a shaft, and a shank portion to which the cutting blade body is joined.
In the shank portion, an insertion hole and a fitting hole are formed so as to communicate coaxially. When the end of the shaft is fitted into the fitting hole while the shaft of the cutting blade body is inserted into the insertion hole, the shaft is inserted between the shaft and the insertion hole. A brazing material is supplied to the provided gap, and the shaft is brazed and fixed to the shank.
【０００９】その際、軸部が嵌合孔部に所定の嵌め合い
公差で嵌合しており、切刃本体部とシャンク部とを同軸
上に高精度に芯出しすることができる。これにより、迅
速かつ確実なロウ付け作業が遂行される。At this time, the shaft portion is fitted in the fitting hole portion with a predetermined fitting tolerance, so that the cutting blade body portion and the shank portion can be coaxially centered with high precision. Thereby, a quick and reliable brazing operation is performed.
【００１０】ここで、軸部またはシャンク部には、挿入
孔部と嵌合孔部との間に位置して溝部が形成されてお
り、この挿入孔部の隙間に供給されたロウ材の余剰部分
がこの溝部に収容される。このため、軸部と嵌合孔部と
の間にロウ材が進入することを確実に回避し、前記軸部
と前記嵌合孔部との間に進入して固化したロウ材により
該軸部が圧潰されることを有効に阻止することが可能に
なる。Here, a groove is formed in the shaft portion or the shank portion between the insertion hole and the fitting hole, and a surplus of the brazing material supplied to the gap of the insertion hole is formed. The part is accommodated in this groove. Therefore, it is possible to reliably prevent the brazing material from entering between the shaft portion and the fitting hole portion, and the brazing material that has entered between the shaft portion and the fitting hole portion and has been solidified. Can be effectively prevented from being crushed.
【００１１】また、本発明に係る切削用工具では、切削
部および軸部を有する切刃本体部と前記切刃本体部が接
合されるシャンク部とを備えるとともに、前記軸部が第
１嵌合軸とこれより小径な第２嵌合軸とを有する一方、
前記シャンク部が挿入孔部と嵌合孔部とを同軸的に設け
ている。そこで、切刃本体部を構成する軸部の第２嵌合
軸が、嵌合孔部に所定の嵌め合い公差で嵌合するととも
に、第１嵌合軸が挿入孔部に対し所定の隙間を設けて挿
入される。次いで、この隙間にロウ材が供給されること
により、第１嵌合軸がシャンク部にロウ付け固着され
る。Further, the cutting tool according to the present invention includes a cutting blade body having a cutting portion and a shaft, and a shank portion to which the cutting blade body is joined. While having a shaft and a second fitting shaft smaller in diameter,
The shank portion provides an insertion hole and a fitting hole coaxially. Therefore, the second fitting shaft of the shaft part forming the cutting blade main body fits into the fitting hole with a predetermined fitting tolerance, and the first fitting shaft forms a predetermined gap with the insertion hole. Provided and inserted. Next, the brazing material is supplied to the gap, so that the first fitting shaft is brazed and fixed to the shank portion.
【００１２】これにより、軸部の第２嵌合軸を嵌合孔部
に嵌合するだけで、切刃本体部とシャンク部とを高精度
に芯出しすることができ、ロウ付け作業が短時間で効率
的に遂行される。その際、軸部またはシャンク部には、
挿入孔部と嵌合孔部との間に位置して溝部が形成されて
おり、この溝部に余剰なロウ材が収容されて、前記嵌合
孔部と第２嵌合軸との間に前記ロウ材が進入することが
ない。Thus, the cutting blade main body and the shank can be centered with high accuracy only by fitting the second fitting shaft of the shaft into the fitting hole, and the brazing operation is short. Performed efficiently in time. At that time, on the shaft or shank,
A groove is formed between the insertion hole and the fitting hole, and an excess brazing material is accommodated in the groove, and the groove is formed between the fitting hole and the second fitting shaft. No brazing material enters.
【００１３】[0013]
【発明の実施の形態】図１は、本発明の第１の実施形態
に係る切削用工具１０の分解斜視説明図であり、図２
は、この切削用工具１０の要部縦断面説明図である。FIG. 1 is an exploded perspective view of a cutting tool 10 according to a first embodiment of the present invention.
FIG. 2 is an explanatory longitudinal sectional view of a main part of the cutting tool 10.
【００１４】切削用工具１０は、例えば、リーマを構成
しており、超硬材製の切刃本体部１２と、前記切刃本体
部１２が接合される鉄系材製のシャンク部１４とを備え
る。切刃本体部１２は、リーマ刃を構成する切削部１６
と、この切削部１６と同軸的に設けられる軸部１８とを
一体的に設けている。The cutting tool 10 comprises, for example, a reamer, and includes a cutting blade body 12 made of a super hard material and an iron-based shank portion 14 to which the cutting blade body 12 is joined. Prepare. The cutting blade main body 12 is provided with a cutting section 16 constituting a reamer blade.
And a shaft 18 provided coaxially with the cutting portion 16 are integrally provided.
【００１５】図２に示すように、シャンク部１４は、軸
部１８が隙間Ｓを設けて挿入されるとともに、この隙間
Ｓにロウ材２０が供給されて前記軸部１８を固着するた
めの挿入孔部２２と、前記挿入孔部２２と同軸的に連通
し、前記軸部１８の端部側が嵌合する嵌合孔部２４と、
前記挿入孔部２２と前記嵌合孔部２４との間に位置して
形成される溝部２６とを有する。As shown in FIG. 2, the shank portion 14 is inserted with the shaft portion 18 provided with a gap S, and the brazing material 20 is supplied to the gap S to fix the shaft portion 18. A hole 22, a fitting hole 24 which coaxially communicates with the insertion hole 22, and an end of the shaft portion 18 is fitted with;
A groove 26 is formed between the insertion hole 22 and the fitting hole 24.
【００１６】軸部１８と嵌合孔部２４とは、所定の嵌め
合い公差により嵌合するように構成されており、この軸
部１８の直径Ｄ１が、例えば、φ１２ｈ７に設定される
一方、嵌合孔部２４の内径Ｄ２が、例えば、φ１２Ｈ７
に設定されている。挿入孔部２２の内径Ｄ３は、例え
ば、φ１２．１に設定されることにより、この挿入孔部
２２と軸部１８との間には、０．０５ｍｍの隙間Ｓが全
周にわたって設けられる。The shaft portion 18 and the fitting hole portion 24 are configured to fit with a predetermined fitting tolerance, and the diameter D1 of the shaft portion 18 is set to, for example, φ12h7, while the fitting is performed. The inner diameter D2 of the hole portion 24 is, for example, φ12H7
Is set to By setting the inner diameter D3 of the insertion hole 22 to φ12.1, for example, a gap S of 0.05 mm is provided between the insertion hole 22 and the shaft 18 over the entire circumference.
【００１７】図３は、切刃本体部１２の軸部１８とシャ
ンク部１４とのインロウ部分を銀ロウ等のロウ材２０に
よってロウ付けするための誘導加熱装置３０の概略説明
図である。この誘導加熱装置３０は、二重巻線を構成し
て軸部１８とシャンク部１４とのインロウ部分を内部に
配置する誘導コイル３２を備え、この誘導コイル３２
が、図示しない高周波交番電圧印加手段に接続されてい
る。FIG. 3 is a schematic explanatory view of an induction heating device 30 for brazing the brazing portion between the shaft portion 18 and the shank portion 14 of the cutting blade body 12 with a brazing material 20 such as silver brazing. The induction heating device 30 includes an induction coil 32 which forms a double winding and arranges a brazing portion of the shaft portion 18 and the shank portion 14 therein.
Are connected to a high-frequency alternating voltage applying means (not shown).
【００１８】このように構成される切削用工具１０を接
合する際には、まず、切刃本体部１２の軸部１８がシャ
ンク部１４に設けられている挿入孔部２２から嵌合孔部
２４に挿入される。その際、軸部１８の直径Ｄ１がφ１
２ｈ７に設定される一方、嵌合孔部２４の内径Ｄ２がφ
１２Ｈ７に設定されており、前記軸部１８を前記嵌合孔
部２４に同軸的かつ高精度に嵌合することができる。When joining the cutting tool 10 having such a configuration, first, the shaft portion 18 of the cutting blade body 12 is inserted through the insertion hole 22 provided in the shank portion 14 into the fitting hole 24. Is inserted into. At this time, the diameter D1 of the shaft 18 is φ1
2h7, while the inside diameter D2 of the fitting hole 24 is φ
It is set to 12H7, so that the shaft portion 18 can be coaxially and precisely fitted into the fitting hole portion 24.
【００１９】これにより、軸部１８を嵌合孔部２４に嵌
合させるだけで、切刃本体部１２とシャンク部１４との
軸芯が正確に一致するとともに、この軸部１８と挿入孔
部２２との隙間Ｓが、全周にわたり０．０５ｍｍの寸法
に確実に維持されることになる。By simply fitting the shaft portion 18 into the fitting hole portion 24, the axis of the cutting blade body 12 and the shank portion 14 exactly match, and the shaft portion 18 and the insertion hole portion are aligned. The gap S with the nozzle 22 is reliably maintained at a dimension of 0.05 mm over the entire circumference.
【００２０】次いで、図３に示すように、シャンク部１
４および切刃本体部１２が誘導加熱装置３０内に配置さ
れ、この切刃本体部１２とこのシャンク部１４とのイン
ロウ部分が誘導コイル３２に周回される。この状態で、
図示しない高周波交番電圧印加手段が駆動されると、誘
導コイル３２内に存在する金属、すなわち、ロウ材２０
が交番磁界により誘導加熱され、このロウ材２０が加熱
溶融されて軸部１８と挿入孔部２２との隙間Ｓに供給さ
れる。Next, as shown in FIG.
The cutting blade body 4 and the cutting blade body 12 are disposed in the induction heating device 30, and the induction coil 32 circulates the spigot portion between the cutting blade body 12 and the shank 14. In this state,
When the high-frequency alternating voltage applying means (not shown) is driven, the metal present in the induction coil 32, that is, the brazing material 20
Is induction-heated by an alternating magnetic field, and the brazing material 20 is heated and melted and supplied to the gap S between the shaft portion 18 and the insertion hole portion 22.
【００２１】隙間Ｓに供給された溶融ロウ材２０の余剰
部分が溝部２６に導入されるとともに、所定の時間だけ
冷却処理が施されることにより、前記隙間Ｓに供給され
た溶融ロウ材２０が固化し、軸部１８とシャンク部１４
とがロウ付け固着される。An excess portion of the molten brazing material 20 supplied to the gap S is introduced into the groove 26, and is cooled for a predetermined time so that the molten brazing material 20 supplied to the gap S is After solidification, the shaft portion 18 and the shank portion 14
Are fixed by brazing.
【００２２】このように、第１の実施形態では、軸部１
８をシャンク部１４の嵌合孔部２４に差し込むだけで、
切刃本体部１２と前記シャンク部１４との軸芯が高精度
に芯出しされる。このため、熟練を必要とすることがな
く、ロウ付け作業が１回で確実に遂行され、切削用工具
１０のロウ付け処理全体の効率化が容易に達成されると
いう効果が得られる。As described above, in the first embodiment, the shaft 1
8 into the fitting hole 24 of the shank part 14,
The axis of the cutting blade body 12 and the shank 14 is centered with high precision. For this reason, there is an effect that the brazing operation is reliably performed once and the efficiency of the entire brazing process of the cutting tool 10 can be easily achieved without requiring skill.
【００２３】しかも、軸部１８と挿入孔部２２との間に
は、全周にわたって０．０５ｍｍの隙間Ｓが確実に形成
されており、この隙間Ｓに溶融ロウ材２０が迅速かつ均
一に供給されるため、ロウ付け層の厚みの相違に起因す
る切刃本体部１２の曲がり等を惹起させることがない。
これにより、切刃本体部１２の精度が向上するととも
に、曲がり修正のために再加熱を行う必要がなく、作業
全体の簡素化が図られる。Further, a gap S of 0.05 mm is reliably formed over the entire circumference between the shaft section 18 and the insertion hole section 22, and the molten brazing material 20 is quickly and uniformly supplied to the gap S. Therefore, bending or the like of the cutting blade body 12 due to the difference in the thickness of the brazing layer does not occur.
Thereby, the accuracy of the cutting blade body 12 is improved, and it is not necessary to perform reheating for bending correction, thereby simplifying the entire operation.
【００２４】その際、ロウ付け層の厚さを０．０５ｍｍ
に確保することができるため、インロウ部分の接合強度
が有効に向上する。さらに、ロウ付け処理が１回で達成
されるため、再度加熱処理を繰り返す際のようなロウ付
け品質の低下や切刃本体部１２自体の品質劣化を惹起さ
せることがない。さらに、切刃本体部１２とシャンク部
１４の軸芯が高精度に一致するため、後工程での研磨用
取り代を少なくすることが可能になり、研磨工数の削減
が図られて研磨作業全体が短時間で効率的に遂行され
る。At this time, the thickness of the brazing layer is set to 0.05 mm.
Therefore, the joining strength of the spigot portion is effectively improved. Furthermore, since the brazing process is performed only once, a decrease in brazing quality and a deterioration in the quality of the cutting blade body 12 itself, which occur when the heating process is repeated, are not caused. Further, since the axis of the cutting blade body 12 and the axis of the shank 14 coincide with each other with high precision, it is possible to reduce the stock removal for polishing in the post-process, thereby reducing the number of polishing steps and the entire polishing work. Is efficiently performed in a short time.
【００２５】また、軸部１８と挿入孔部２２の隙間Ｓに
供給された余分な溶融ロウ材２０は、溝部２６に収容さ
れるため、この余分なロウ材２０が嵌合孔部２４と軸部
１８との間に進入することがない。従って、嵌合孔部２
４内でロウ材２０が固化して軸部１８に圧潰等が発生す
ることを確実に阻止することができるという利点があ
る。The excess molten brazing material 20 supplied to the gap S between the shaft portion 18 and the insertion hole portion 22 is accommodated in the groove portion 26. It does not enter between the unit 18. Therefore, the fitting hole 2
There is an advantage that it is possible to reliably prevent the brazing material 20 from being solidified in the shaft 4 and crushing the shaft portion 18.
【００２６】なお、第１の実施形態では、シャンク部１
４に溝部２６を形成しているが、切刃本体部１２を構成
する軸部１８に、挿入孔部２２と嵌合孔部２４との間に
対応して溝部（周溝）を形成するようにしてもよい。In the first embodiment, the shank 1
Although the groove 26 is formed in the shaft 4, a groove (peripheral groove) is formed on the shaft 18 constituting the cutting blade main body 12 so as to correspond between the insertion hole 22 and the fitting hole 24. It may be.
【００２７】図４は、本発明の第２の実施形態に係る切
削用工具４０の分解斜視説明図であり、図５は、前記切
削用工具４０の要部縦断面説明図である。FIG. 4 is an exploded perspective view of a cutting tool 40 according to a second embodiment of the present invention, and FIG. 5 is a longitudinal sectional view of a main part of the cutting tool 40.
【００２８】切削用工具４０は、切刃本体部４２とこの
切刃本体部４２が接合されるシャンク部４４とを備え、
前記切刃本体部４２は、例えば、テーパ刃を構成する切
削部４６と軸部４８とを一体的に設ける。軸部４８は、
第１嵌合軸５０と前記第１嵌合軸５０より小径な第２嵌
合軸５２とを有し、前記第１および第２嵌合軸５０、５
２の間に周溝（溝部）５４が形成される。The cutting tool 40 includes a cutting blade body 42 and a shank 44 to which the cutting blade body 42 is joined.
The cutting blade body 42 integrally includes, for example, a cutting part 46 and a shaft 48 that form a tapered blade. The shaft portion 48
A first fitting shaft and a second fitting shaft having a smaller diameter than the first fitting shaft;
2, a circumferential groove (groove) 54 is formed.
【００２９】図５に示すように、シャンク部４４は、第
１嵌合軸５０が隙間Ｓ１を設けて挿入されるとともに、
この隙間Ｓ１にロウ材２０が供給されて前記第１嵌合軸
５０を固着するための挿入孔部５６と、前記挿入孔部５
６に同軸的に連通し、第２嵌合軸５２を嵌合する嵌合孔
部５８とを有する。第２嵌合軸５２と嵌合孔部５８との
嵌め合い公差はｈ７およびＨ７に設定されるとともに、
隙間Ｓ１は全周にわたって０．０５ｍｍに設定されてい
る。As shown in FIG. 5, the shank portion 44 is inserted with the first fitting shaft 50 provided with a gap S1 therebetween.
The insertion hole 56 for fixing the first fitting shaft 50 by the brazing material 20 being supplied to the gap S1 and the insertion hole 5
6 and a fitting hole 58 to which the second fitting shaft 52 is fitted. The fitting tolerance between the second fitting shaft 52 and the fitting hole 58 is set to h7 and H7,
The gap S1 is set to 0.05 mm over the entire circumference.
【００３０】このように構成される第２の実施形態で
は、軸部４８を構成する第２嵌合軸５２がシャンク部４
４の嵌合孔部５８に差し込まれるだけで、切刃本体部４
２と前記シャンク部４４の軸芯が高精度に一致する。こ
れにより、切刃本体部４２とシャンク部４４とのロウ付
け作業が確実に遂行される等、第１の実施形態と同様の
効果が得られる。In the second embodiment configured as described above, the second fitting shaft 52 forming the shaft portion 48 is
4 only by being inserted into the fitting hole 58 of the cutting blade body 4.
2 and the axial center of the shank portion 44 match with high accuracy. Thereby, the same effect as in the first embodiment can be obtained, for example, the brazing work between the cutting blade main body portion 42 and the shank portion 44 is reliably performed.
【００３１】なお、第２の実施形態では、軸部４８に余
剰なロウ材２０を収容するための周溝５４が形成されて
いるが、第１の実施形態と同様に、シャンク部４４の内
周部に、挿入孔部５６と嵌合孔部５８との間に位置して
溝部を形成してもよい。In the second embodiment, the peripheral groove 54 for accommodating the surplus brazing material 20 is formed in the shaft portion 48. However, as in the first embodiment, the inside of the shank portion 44 is formed. A groove may be formed in the periphery between the insertion hole 56 and the fitting hole 58.
【００３２】[0032]
【発明の効果】本発明に係る切削用工具では、切刃本体
部を構成する軸部をシャンク部に設けられた嵌合孔部に
嵌合させるだけで、互いの芯出しが確実になされ、軸部
と前記シャンク部に設けられた挿入孔部との隙間にロウ
材を供給することにより、単一のロウ付け作業によって
前記切刃本体部と前記シャンク部とを高精度かつ確実に
ロウ付け固着することができる。その際、軸部またはシ
ャンク部に形成された溝部に余剰な溶融ロウ材が収容さ
れ、この溶融ロウ材が軸部と嵌合孔部との間に進入する
ことを確実に阻止することが可能になる。In the cutting tool according to the present invention, the centering of each other is reliably performed only by fitting the shaft constituting the cutting blade body into the fitting hole provided in the shank. By supplying brazing material to the gap between the shaft portion and the insertion hole provided in the shank portion, the cutting blade body portion and the shank portion are brazed with high accuracy and reliability by a single brazing operation. Can be fixed. At that time, excess molten brazing material is stored in the groove formed in the shaft portion or the shank portion, and it is possible to reliably prevent the molten brazing material from entering between the shaft portion and the fitting hole. become.
【００３３】また、本発明に係る切削用工具では、切刃
本体部を構成する軸部の第２嵌合軸をシャンク部に設け
られた嵌合孔部に嵌合させるだけで、前記切刃本体部と
前記シャンク部との軸芯が正確に一致し、前記軸部の第
１嵌合軸と前記シャンク部の挿入孔部との隙間にロウ材
が供給されることにより、単一のロウ付け処理によって
前記切刃本体部と前記シャンク部とを高精度かつ効率的
にロウ付け固着することができる。Further, in the cutting tool according to the present invention, the cutting edge can be obtained simply by fitting the second fitting shaft of the shaft constituting the cutting blade body into the fitting hole provided in the shank. A single brazing material is supplied to the gap between the first fitting shaft of the shaft portion and the insertion hole of the shank portion so that the axes of the main body portion and the shank portion exactly coincide with each other. By the attaching process, the cutting blade main body portion and the shank portion can be brazed and fixed with high precision and efficiency.
【図１】本発明の第１の実施形態に係る切削用工具の分
解斜視説明図である。FIG. 1 is an exploded perspective view of a cutting tool according to a first embodiment of the present invention.
【図２】前記切削用工具の要部縦断面説明図である。FIG. 2 is an explanatory longitudinal sectional view of a main part of the cutting tool.
【図３】前記切削用工具をロウ付けするための誘導加熱
装置の概略説明図である。FIG. 3 is a schematic explanatory view of an induction heating device for brazing the cutting tool.
【図４】本発明の第２の実施形態に係る切削用工具の分
解斜視説明図である。FIG. 4 is an exploded perspective view of a cutting tool according to a second embodiment of the present invention.
【図５】前記切削用工具の要部縦断面説明図である。FIG. 5 is an explanatory longitudinal sectional view of a main part of the cutting tool.
【図６】従来技術に係る要部縦断面説明図である。FIG. 6 is an explanatory longitudinal sectional view of a main part according to a conventional technique.
１０、４０…切削用工具 １２、４２…切刃本体
部 １４、４４…シャンク部 １６、４６…切削部 １８、４８…軸部 ２０…ロウ材 ２２、５６…挿入孔部 ２４、５８…嵌合孔部 ２６…溝部 ３０…誘導加熱装置 ３２…誘導コイル ５０、５２…嵌合軸 ５４…周溝10, 40 ... cutting tool 12, 42 ... cutting blade body 14, 44 ... shank 16, 46 ... cutting part 18, 48 ... shaft 20 ... brazing material 22, 56 ... insertion hole 24, 58 ... fitting Hole 26: Groove 30: Induction heating device 32: Induction coil 50, 52: Fitting shaft 54: Circumferential groove
───────────────────────────────────────────────────── フロントページの続き (72)発明者 細野 轄次 埼玉県狭山市新狭山１−10−１ ホンダエ ンジニアリング株式会社内 Ｆターム(参考） 3C050 EA00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Koji Hosono 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. F-term (reference) 3C050 EA00
Claims (2)
前記切刃本体部が接合されるシャンク部とを備える切削
用工具であって、 前記シャンク部は、前記軸部が隙間を設けて挿入される
とともに、前記隙間にロウ材を供給して該軸部を固着す
るための挿入孔部と、 前記挿入孔部に同軸的に連通し、前記軸部の端部側が嵌
合する嵌合孔部と、 を有し、 前記軸部または前記シャンク部には、前記挿入孔部と前
記嵌合孔部との間に位置して溝部が形成されることを特
徴とする切削用工具。A cutting blade body having a cutting portion and a shaft portion;
A cutting tool including a shank portion to which the cutting blade main body portion is joined, wherein the shank portion is inserted with a gap provided, and a brazing material is supplied to the gap to supply the brazing material. An insertion hole portion for fixing the portion, and a fitting hole portion that coaxially communicates with the insertion hole portion and that the end portion side of the shaft portion fits into. The shaft portion or the shank portion In the cutting tool, a groove is formed between the insertion hole and the fitting hole.
前記切刃本体部が接合されるシャンク部とを備える切削
用工具であって、 前記軸部は、第１嵌合軸と、 前記第１嵌合軸より小径な第２嵌合軸と、 を有し、 前記シャンク部は、前記第１嵌合軸が隙間を設けて挿入
されるとともに、前記隙間にロウ材を供給して該第１嵌
合軸を固着するための挿入孔部と、 前記挿入孔部に同軸的に連通し、前記第２嵌合軸が嵌合
する嵌合孔部と、 を有するとともに、 前記軸部または前記シャンク部には、前記挿入孔部と前
記嵌合孔部との間に位置して溝部が形成されることを特
徴とする切削用工具。2. A cutting blade body having a cutting portion and a shaft,
A cutting tool including a shank portion to which the cutting blade body is joined, wherein the shaft portion includes: a first fitting shaft; and a second fitting shaft having a smaller diameter than the first fitting shaft. The shank portion, wherein the first fitting shaft is inserted with a gap provided therein, and an insertion hole portion for supplying a brazing material to the gap to fix the first fitting shaft; And a fitting hole that coaxially communicates with the insertion hole and the second fitting shaft fits therein. The shaft or the shank portion includes the insertion hole and the fitting hole. Wherein a groove is formed between the cutting tool and the cutting tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28176899A JP4324289B2 (en) | 1999-10-01 | 1999-10-01 | Cutting tool and method of manufacturing cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28176899A JP4324289B2 (en) | 1999-10-01 | 1999-10-01 | Cutting tool and method of manufacturing cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001105230A true JP2001105230A (en) | 2001-04-17 |
| JP4324289B2 JP4324289B2 (en) | 2009-09-02 |
Family
ID=17643712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28176899A Expired - Fee Related JP4324289B2 (en) | 1999-10-01 | 1999-10-01 | Cutting tool and method of manufacturing cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4324289B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012000664A (en) * | 2010-06-21 | 2012-01-05 | Mitsubishi Materials Corp | Brazed tool |
| CN112091554A (en) * | 2020-08-11 | 2020-12-18 | 邹玉婷 | Art designing knife inner knife slideway assembling machine |
-
1999
- 1999-10-01 JP JP28176899A patent/JP4324289B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012000664A (en) * | 2010-06-21 | 2012-01-05 | Mitsubishi Materials Corp | Brazed tool |
| CN112091554A (en) * | 2020-08-11 | 2020-12-18 | 邹玉婷 | Art designing knife inner knife slideway assembling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4324289B2 (en) | 2009-09-02 |
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