JPS60146618A - Throwaway type broach - Google Patents
Throwaway type broachInfo
- Publication number
- JPS60146618A JPS60146618A JP262684A JP262684A JPS60146618A JP S60146618 A JPS60146618 A JP S60146618A JP 262684 A JP262684 A JP 262684A JP 262684 A JP262684 A JP 262684A JP S60146618 A JPS60146618 A JP S60146618A
- Authority
- JP
- Japan
- Prior art keywords
- chips
- cutting
- cutting edges
- broach
- chip
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D43/00—Broaching tools
- B23D43/02—Broaching tools for cutting by rectilinear movement
- B23D43/04—Broaching tools for cutting by rectilinear movement having inserted cutting edges
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
Description
【発明の詳細な説明】
(技術分野)
こΩ発明は加工物のキー溝、表面等を切削する、切削方
向に向って1願次刃高を高くしたブローチに関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a broach that cuts the keyway, surface, etc. of a workpiece, and has a higher cutting edge height in the cutting direction.
(背景技術)
従来、この裡のブローチは高速度工具鋼の一伴ものに切
刃を形成したもの、又は切刃に超硬合金をロウ付けした
ものが一般的であった。近年倒斜開発が進み難削材が多
くなり、加工においてもスピード化と工具寿命の延長が
要求さ扛るようになった、このため従来のブローチ、特
に高速度工具鋼で製作さ扛たものは、離削材を切削する
と切刃摩耗が早く工具寿命が非常に短かい欠点がある。(Background Art) Conventionally, broaches of this kind have generally had a cutting edge formed on a companion made of high-speed tool steel, or have a cutting edge brazed with cemented carbide. In recent years, the development of inverted bevels has progressed, and the number of difficult-to-cut materials has increased, and there has been a demand for faster machining and longer tool life.For this reason, conventional broaches, especially those made of high-speed tool steel, are being used. The disadvantage is that when cutting away material, the cutting edge wears quickly and the tool life is very short.
又この問題を解決するため切刃に超硬合金チップを用い
、本体にこt′Lをロウ付けしたものも提案さオtてい
る(例えば特開昭57−127618、特開昭57−1
32920.)がロウ付は時の熱膨張歪により超硬合金
チップや本体にクンツクが生じ切刃にチッピングが発生
したり、本体が割rしることもある。又ロウ付は曲の接
着が十分でなくチップが剥離する等の欠点もあった。こ
nらの欠点をなくするために超イ便合金の一体物で製作
することも考えられるが材料が高価であり、製作方法も
困難で、いきおい製作コストが高く不経済である。In order to solve this problem, it has also been proposed to use a cemented carbide tip for the cutting edge and braze t'L to the main body (for example, JP-A-57-127618, JP-A-57-1).
32920. ) However, when brazing, the cemented carbide tip and body may crack due to thermal expansion strain, causing chipping on the cutting edge or cracking of the body. Also, brazing had the disadvantage that the adhesiveness of the curves was not sufficient and the chips could peel off. In order to eliminate these drawbacks, it is conceivable to manufacture it from a single piece of superalloy, but the material is expensive, the manufacturing method is difficult, and the manufacturing cost is high and uneconomical.
(目 約9
この発明は、中心に設けたねし孔に関して対称に一対の
切刃を形成した硬質材料製のチップを多数本体の長手方
向の溝に配列し、ボルトでと扛らを固定することによっ
て、離削月の筒速度ブローチ加工を行ってもチップが本
体から離脱することがなく、またチップの切刃のチッピ
ングや割nが生ずることもなく、長寿命で安価なスロー
アウェイ式ブローチを提供することを目的とする。(Approx. 9) This invention involves arranging a large number of hard material chips each having a pair of cutting edges symmetrically with respect to a slotted hole in the center in a groove in the longitudinal direction of the main body, and fixing the chips with bolts. This allows us to create a long-life, inexpensive indexable broach that does not allow the tip to separate from the main body even when broaching is performed at a cylinder speed that increases the cutting speed, and does not cause chipping or cracking of the cutting edge of the tip. The purpose is to provide.
(構 成)
本発明は、切欠き面とすくい面とをもつ一対の切刃を中
心ねじ孔に関して対称に形成した硬質材料製の多数のチ
ップを、ブローチ本体に長手方向に設けら汎た溝に配設
し、該溝の底面から突出するチップ受は座に他方の切刃
の切欠き面を当接させるとともに、チップのねし孔にボ
ルトをねじ込んで各チップを本体に固定したスローアウ
ェイ式ブローチである。(Structure) The present invention is characterized in that a large number of tips made of a hard material each having a pair of cutting edges having a notch surface and a rake surface are formed symmetrically with respect to a central screw hole, are provided in the broach main body in the longitudinal direction, and a wide groove is formed. The insert holder protrudes from the bottom of the groove, and the notch surface of the other cutting edge contacts the seat, and each insert is fixed to the main body by screwing a bolt into the threaded hole of the insert. It is a ceremony brooch.
(発明の効果)
本発明は、超硬合金、サーメット、立方晶窒化硼素、セ
ラミック、尚バナジウム系粉末高速度鋼つ
などの硬質材料でチップを製造し・チ′フに形状を中心
のねし孔に関して対称の位置に一対の切刃を形成すると
共に、ブローチ本体の長手方向の溝に配設し、切刃と反
対1H)1の切刃の切欠き面と溝底から突出するチップ
受は座に当接させ、ボルトでチップを本体に固定したの
で切刃にががる切削力は次のチップとチップ受は座に支
えら扛ているので剛性があり充分切削力を支えることが
でき切削もスムーズにおこなわ扛る。対称な切刃は一方
が再度の刃付けにより切刃の寿命が来て使用不能になっ
てももう一方を切刃として使用できるので2倍の仕事が
できる。同じ形状で同じ寸法のチップを複数個使用して
いるので、仮に切削中例箇かのチップが異常摩耗したり
、チッピングして使用不能になっても予備チップとすぐ
交換して再使用ができる等の利点がある。(Effects of the Invention) The present invention manufactures chips using hard materials such as cemented carbide, cermet, cubic boron nitride, ceramics, and vanadium-based powder high-speed steel. A pair of cutting edges are formed at symmetrical positions with respect to the hole, and a chip holder is disposed in a groove in the longitudinal direction of the broach body, and protrudes from the notch surface of the cutting edge 1H opposite to the cutting edge and the groove bottom. Since the insert is in contact with the seat and the insert is fixed to the main body with a bolt, the cutting force exerted on the cutting edge will be absorbed.The insert and chip holder are supported by the seat, so they are rigid and can sufficiently support the cutting force. Cutting is also done smoothly. With symmetrical cutting blades, even if one blade reaches the end of its lifespan due to resharpening and becomes unusable, the other can be used as a cutting blade, so it can do twice as much work. Since multiple tips with the same shape and dimensions are used, even if one tip becomes abnormally worn during cutting or becomes unusable due to chipping, it can be immediately replaced with a spare tip and reused. There are advantages such as
(実施例の説明) 次にこの発明の実施例を図面により説明する。(Explanation of Examples) Next, embodiments of the invention will be described with reference to the drawings.
本体(1)は第2図に示すように丁字形基部(2)を挾
んで側板金(3)、(4)をボルト(5)により固定し
、長溝(6)を形成する。溝底にはチップ受は座(7)
が複数突設さ扛ている。さらに、本体(11の基部(2
)にチップ位置決め金(8)をボルト(9)により固定
する。硬質材料製のチップ(10)は第1図に示す実施
例では中心のねじ孔(19に関して対称の位置に切欠き
面(1ηとすくい面(141の稜線に切刃口を形成した
同一形成した同一形状の丸駒チップであって、外周の円
弧面がIJ IJ−]面αQとなり、抗折力が大きく剛
性が犬である。As shown in FIG. 2, the main body (1) sandwiches the T-shaped base (2) and fixes the side metal plates (3) and (4) with bolts (5), forming a long groove (6). There is a chip holder at the bottom of the groove (7)
There are multiple protrusions. Furthermore, the base of the main body (11) (2
) with the bolt (9). In the embodiment shown in Fig. 1, the tip (10) made of a hard material has a notch face (1η) and a rake face (141) having the same shape with a cutting edge formed on the ridgeline at a symmetrical position with respect to the central screw hole (19). They are round chips with the same shape, the arcuate surface of the outer periphery is the IJ IJ-] plane αQ, and the transverse rupture strength is large and the rigidity is high.
チップ叫を溝(6)に挿入しチップ受は座(力に切欠き
而(11)を当接させボルトa’ztにより本体(1)
に固定する。Insert the chip holder into the groove (6), place the chip holder in contact with the notch (11) on the seat, and tighten the bolt a'zt to the main body (1).
Fixed to.
切刃Q4に切削力がかかるとチップ受は座(7ンと次の
チップ(1[)の当接面(1t9でチップを確実に支え
ているため、切削力によるチップの折損などが生じ−な
い01ピンチ(1?)はチップ叫の外径に等しく、充分
な切屑ポケットとなっている。切刃の摩耗が進行し再研
削による刃付けを要する場合にはすくい面q4を順次研
削していけばよい。再研削が不可能となったら反対側の
対称な切刃α3をもったチップを反転させて組み替えて
使用する。ブローチ切刃全体の勾配はチップ受は座(7
)につけてあり各チップ(IUの切刃は適切な勾配とな
っている。さらに第5図に示す実施例ではチップ(io
a)でハ、リリーフ面(isa)を直線としたものを示
す。When a cutting force is applied to the cutting edge Q4, the chip holder securely supports the chip with the seat (7) and the contact surface (1t9) of the next chip (1[), so the cutting force may cause the chip to break. The 01 pinch (1?) is equal to the outer diameter of the chip and has a sufficient chip pocket.If the cutting edge wear progresses and requires re-grinding, grind the rake face q4 sequentially. If re-grinding becomes impossible, reverse the insert with the symmetrical cutting edge α3 on the opposite side and reassemble it.
), and the cutting edge of each tip (IU) has an appropriate slope.Furthermore, in the embodiment shown in FIG.
In a) and c, the relief surface (isa) is shown as a straight line.
さらに、第6図に示す実施例においては、第1図の実施
例と同様に丸駒チップOQを用いたものであるが、溝(
6)の底面から突出するチップ受は座(7すを形成する
に当り、段部(6)には基部(2)から貫通したねし孔
aηを形成し該ねじ孔にボルト0榎ヲねじこみ、ポル)
QQの各先端面をボルトu4のねじ孔の勾配と同じ勾配
にしてチップ受は座(7a)を形成しである。丸駒チッ
プ位置決め金(8)をボルト(9)で固定し、押え金(
4)をボルト04で仮固定すると長手方向に溝(6)が
形成さnる。該溝中に丸駒チップ叫を装入しボルト(6
)とボルト(5)を締めつけて本体(1)に固定する。Furthermore, in the embodiment shown in FIG. 6, a round chip OQ is used as in the embodiment shown in FIG.
When forming the chip holder protruding from the bottom of the base (6), a threaded hole aη is formed in the step (6) passing through from the base (2), and a bolt is screwed into the threaded hole. , Pol)
The tip holder forms a seat (7a) by making each end face of QQ have the same slope as the slope of the screw hole of the bolt u4. Fix the round piece tip positioning metal (8) with the bolt (9), and then tighten the presser foot (
4) is temporarily fixed with the bolt 04, a groove (6) is formed in the longitudinal direction. Insert a round piece chip into the groove and tighten the bolt (6
) and bolts (5) to secure it to the main body (1).
切刃α]に切削力がかかっても、回り止め用ボルトα椴
の先端面(7)に切り欠き而αυが当接していて確実に
切削力を受ける。Even if a cutting force is applied to the cutting edge α, the notch αυ is in contact with the tip surface (7) of the locking bolt α, so that the cutting force is reliably received.
第1図はこの発明の実施例の一部を切欠いた部分切断側
面図、第2図は第1図の■−川用による断面図、第3図
は同じ< 1t−nt線による断面図、第4図は同IV
−IV線による断面図、第5図は他の実施例の一部を切
欠いた側面図、第6図は更に他鼻実施例の一部を切欠い
た部分切断側面図、第7図は第6図の■−■線による断
面図、第8図は同1−■線による断面図、第9図は同I
X−IX線による断面図である。
1・・・・・・ブローチ本体 6・・・・・・溝7.7
a・・・チップ受は座 lO・・・・・・チップ11・
・・・・・切欠き面 12・・・・・・ボルト13・・
・・・・切 刃 14・・・・・・すくい面15・・・
・・・ねじ孔 18・・・・・・ボルト代理人 弁理士
河 内 潤 二
第1図
第2m $3I21 第4図
帛5図
#J6・図
第7図
2
攬8図 第9閃
手 続 補 正 書 7゜
昭和59年4月11日
特許庁長官 若 杉 和 夫 殿
1、事件の表示
昭和59年特許願第2626号
2、発明の名称
スローアウェイ式ブローチ
3、補正をする者
事件との関係 特許出願人
名称 (5,19) 株式会社 不 二 越4、代理人
居所 東京都港区芝公園2丁目4番1号秀和芝パークビ
ル3階
一
自 発
6、補正の対象
゛明細書の発明の詳細な説明の欄、図面補正の内容
7.1 明細書第5頁第11行目から122行目リリー
フ面(151を[リリーフ面(19)Jに訂正する。
7.2 第6頁第6行目から7行目[リリーフ面(15
a)Jを「リリーフ面(19a)Jに訂正する。
7.3 図面第1図、第5図を別紙未配の通り、第6図
を別紙の通り訂正する。FIG. 1 is a partially cutaway side view of an embodiment of the present invention, FIG. 2 is a sectional view taken along the ■-Kawayo line in FIG. 1, and FIG. 3 is a sectional view taken along the same < 1t-nt line. Figure 4 shows the same IV.
5 is a partially cutaway side view of another embodiment, FIG. 6 is a partially cutaway side view of another nose embodiment, and FIG. 7 is a partially cutaway side view of another embodiment. Figure 8 is a sectional view taken along the line ■-■ in the figure, Figure 8 is a cross-sectional view taken along the line 1-■ in the figure, and Figure 9 is a cross-sectional view taken along the line I
FIG. 3 is a cross-sectional view taken along the line X-IX. 1...Broach body 6...Groove 7.7
a...Chip holder is seat lO...Chip 11.
...Notch surface 12...Bolt 13...
... Cutting edge 14 ... Rake face 15 ...
... Screw hole 18 ... Bolt agent Patent attorney Jun Kawauchi Figure 1 Figure 2m $3I21 Figure 4 Figure 5 #J6 Figure 7 Figure 2 Figure 8 Figure 9 Flash procedure Amendment 7゜April 11, 1980 Kazuo Wakasugi, Commissioner of the Patent Office 1. Indication of the case 1982 Patent Application No. 2626 2. Name of the invention Indexable type brooch 3. Case of the person making the amendment Relationship between patent applicant name (5,19) Fuji Koshi 4, agent residence Hidekazu Shiba Park Building 3rd floor, Shiba Koen 2-4-1, Minato-ku, Tokyo 1-6, subject of amendment Detailed Description of the Invention Column, Contents of Drawing Corrections 7.1 Relief surface from line 11 to line 122 of page 5 of the specification (151 is corrected to [relief surface (19) J). 7.2 Page 6 of the specification 6th to 7th line [Relief surface (15
a) Correct J to "Relief surface (19a) J." 7.3 Correct the drawings Figures 1 and 5 as shown in the attached sheet and Figure 6 as shown in the attached sheet.
Claims (1)
ねし孔に関して対称に形成した硬質材料製の同一形状の
多数のチップを、ブローチ本体に長手方向に設けら扛た
溝に配設し、該溝の底面から突出するチップ受は座に他
方の切刃の切欠き面を当接させるとともに、チップのね
し孔にボルトをねじ込んで各チップを本体に固定したス
ローアウェイ式ブローチ。 (2)チップ受は座は本体の下端から溝底に向けてねじ
込まれたボルトの先端面である特許請求の範囲第1項記
載のスローアウェイ゛式ブローチ。 (3)チップは丸駒チップである特許請求の範囲第1項
又は第2項記載のスローアウェイ式ブローチ0[Scope of Claims] (1) A large number of chips of the same shape made of a hard material, each having a pair of cutting edges having a notch surface and a rake surface, formed symmetrically with respect to a central tapped hole, are attached to the broach body in the longitudinal direction. The chip holder, which protrudes from the bottom of the groove, abuts the notched surface of the other cutting edge against the seat, and screws a bolt into the tapped hole of the chip to remove each chip. A throw-away broach fixed to the main body. (2) The throw-away broach according to claim 1, wherein the tip receiver seat is the tip end surface of a bolt screwed from the lower end of the main body toward the bottom of the groove. (3) Throw-away broach 0 according to claim 1 or 2, wherein the tip is a round tip.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP262684A JPS60146618A (en) | 1984-01-12 | 1984-01-12 | Throwaway type broach |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP262684A JPS60146618A (en) | 1984-01-12 | 1984-01-12 | Throwaway type broach |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60146618A true JPS60146618A (en) | 1985-08-02 |
Family
ID=11534602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP262684A Pending JPS60146618A (en) | 1984-01-12 | 1984-01-12 | Throwaway type broach |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60146618A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH024712U (en) * | 1988-06-20 | 1990-01-12 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5155077A (en) * | 1974-11-07 | 1976-05-14 | Kobe Steel Ltd | SAAFUEESUBUROOCHI |
-
1984
- 1984-01-12 JP JP262684A patent/JPS60146618A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5155077A (en) * | 1974-11-07 | 1976-05-14 | Kobe Steel Ltd | SAAFUEESUBUROOCHI |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH024712U (en) * | 1988-06-20 | 1990-01-12 |
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