JPH0655305A - Curved surface machining attachment for lathe - Google Patents
Curved surface machining attachment for latheInfo
- Publication number
- JPH0655305A JPH0655305A JP17653892A JP17653892A JPH0655305A JP H0655305 A JPH0655305 A JP H0655305A JP 17653892 A JP17653892 A JP 17653892A JP 17653892 A JP17653892 A JP 17653892A JP H0655305 A JPH0655305 A JP H0655305A
- Authority
- JP
- Japan
- Prior art keywords
- curved surface
- holder
- rotary shaft
- tip
- shaft
- 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
Landscapes
- Turning (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、汎用の旋盤と市販の
安価な刃具を用いてワークに任意半径の曲面を経済的に
加工することを可能ならしめる曲面加工用アタッチメン
トに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment for curved surface processing which makes it possible to economically process a curved surface of an arbitrary radius on a work by using a general-purpose lathe and a commercially available inexpensive cutting tool.
【0002】[0002]
【従来の技術】ワーク外周の段差部の曲面、外周溝の曲
面と云った部分の旋削加工は、通常、姿バイトによる加
工又は数値制御による倣い加工によって実施されてい
る。2. Description of the Related Art Turning of a curved surface of a stepped portion on the outer periphery of a workpiece and a curved surface of an outer peripheral groove is usually carried out by machining with a figure tool or by numerical control.
【0003】[0003]
【発明が解決しようとする課題】姿バイトによる加工
は、切刃形状をワークに転写するので、汎用旋盤による
加工が可能な反面、曲面のR半径に合致した切刃をもつ
特殊な刃具を必要とする。R半径の変化に対応するため
に種々のサイズの刃具を準備する必要もある。また、刃
具の大きさに限界があるので、R半径の大きな曲面は加
工できない。Since the shape of the cutting edge is transferred to the work by machining with the figure tool, it can be processed by a general-purpose lathe, but a special cutting tool having a cutting edge matching the radius of the curved surface is required. And It is also necessary to prepare cutting tools of various sizes to cope with changes in the R radius. Further, since the size of the cutting tool is limited, a curved surface having a large R radius cannot be processed.
【0004】一方、倣い加工は、刃先の移動軌跡が曲線
を描くように送りをかけながらバイトをワーク径方向に
徐々に移動させるので、刃具は汎用品で間に合うが高価
なNC旋盤を必要としたり、汎用旋盤では加工が複雑に
なったりする。On the other hand, in the copying process, since the cutting tool is gradually moved in the radial direction of the work while sending it so that the movement locus of the cutting edge draws a curve, the cutting tool is a general-purpose product, but an expensive NC lathe is required. Machining becomes complicated with general-purpose lathes.
【0005】そこで、この発明は、経済負担の軽減のた
めに、市販の安価な刃具、例えば標準品の多角形スロー
アウェイチップを用いてその刃具のノーズ半径よりも大
きなR半径の曲面を汎用旋盤で手軽に加工できるように
することを目的としている。Therefore, in order to reduce the economic burden, the present invention uses a commercially available inexpensive cutting tool, for example, a standard polygonal throw-away tip, to form a curved surface having an R radius larger than the nose radius of the cutting tool on a general-purpose lathe. The purpose is to enable easy processing with.
【0006】[0006]
【課題を解決するための手段】上記の目的を達成するた
め、この発明においては、旋盤の刃物台に固定する基部
と、この基部の先端近くに縦向きに組付ける回転軸と、
この回転軸の上端に着脱自在に取付けるホルダと、刃先
をホルダ外周に突出させて前記ホルダの座部に装着する
刃具と、基部に組付けた前記回転軸の駆動機構とで構成
される曲面加工用のアタッチメントを提供する。In order to achieve the above object, according to the present invention, a base fixed to a tool rest of a lathe, and a rotary shaft vertically assembled near the tip of the base,
Curved surface processing consisting of a holder that is detachably attached to the upper end of the rotating shaft, a cutting tool that protrudes the cutting edge toward the outer circumference of the holder and is mounted on the seat of the holder, and a drive mechanism for the rotating shaft that is assembled to the base. Provide attachments for.
【0007】[0007]
【作用】回転軸に動力を加えてこの軸と一緒にホルダを
回転させると、ホルダに装着した刃具の刃先が回転軸中
心に移動する。この移動の軌跡は、回転軸が定位置で回
転したならば円になり、従って、この円上での刃先移動
を送りとする加工を行えば、被削面は回転軸の軸心から
刃先までの距離をR半径とする曲面になる。When the holder is rotated together with the rotary shaft by applying power to the rotary shaft, the cutting edge of the cutting tool attached to the holder moves to the center of the rotary shaft. The locus of this movement becomes a circle if the rotary shaft rotates at a fixed position. Therefore, if machining is performed with the cutting edge movement on this circle as the feed, the surface to be cut is from the axis of the rotary shaft to the cutting edge. The curved surface has a radius of R.
【0008】なお、加工曲面のR半径の変化に対して
は、基本的にはホルダを異サイズのものと交換して対応
する。R半径の変化量が微小であれば、ホルダに設ける
刃具の位置決め基準面の位置を調整して対応することも
可能である。Incidentally, the change of the radius R of the processed curved surface is basically dealt with by exchanging the holder with a different size. If the amount of change in R radius is small, it is also possible to adjust the position of the positioning reference plane of the cutting tool provided on the holder.
【0009】[0009]
【実施例】以下、添付図面に基づいてこの発明のアタッ
チメントの実施例について説明する。Embodiments of the attachment of the present invention will be described below with reference to the accompanying drawings.
【0010】図1乃至図4に示すように、曲面加工用ア
タッチメント10は、旋盤の刃物台Aに固定する基部1
と、この基部の先端側に設ける回転軸2と、この軸の上
端に取付けるホルダ3と、そのホルダに装着するスロー
アウェイチップ4と、回転軸1の駆動機構5とで構成さ
れている。As shown in FIGS. 1 to 4, a curved surface attachment 10 is a base 1 fixed to a tool rest A of a lathe.
A rotary shaft 2 provided on the tip side of the base, a holder 3 attached to the upper end of the shaft, a throw-away tip 4 mounted on the holder, and a drive mechanism 5 for the rotary shaft 1.
【0011】基部1の先端の上部コーナは、ワークとの
干渉回避のために切欠いてある。この基部1には、図4
に示す縦孔1a、基部の後面に抜ける横孔1b、及び基
部を幅方向に貫通する複数のボルト孔1c(図2)を設
けてあり、刃物台Aへの基部の取付けは、孔1cに通し
たボルト6(図1、2)を刃物台に螺合させて行ってい
る。The upper corner at the tip of the base 1 is notched to avoid interference with the work. This base 1 is shown in FIG.
2 is provided with a vertical hole 1a, a horizontal hole 1b extending through the rear surface of the base part, and a plurality of bolt holes 1c (FIG. 2) penetrating the base part in the width direction. The bolt 6 (FIGS. 1 and 2) passed through is screwed into the tool rest.
【0012】回転軸2は、前記縦孔1a内に回転自在に
組付けられる。この軸2は、上端に孔1aよりも大径の
ソケット2aを一体に設けてこのソケットで下方への抜
け止めを行うと共に、ソケットにホルダ3の足3a(図
4)をねじ込むことでホルダの簡易な着脱を可能ならし
めている。The rotary shaft 2 is rotatably assembled in the vertical hole 1a. The shaft 2 is integrally provided with a socket 2a having a larger diameter than the hole 1a at the upper end to prevent the socket from coming out downward, and by screwing the foot 3a (FIG. 4) of the holder 3 into the socket, It is easy to attach and detach.
【0013】ホルダ3は、図5に示すように雄ねじの足
3aと、スローアウェイチップを着座させる座部3b
と、チップのクランプねじ3cを有している。チップ4
の固定はクランプ駒で上から押え付けたり、皿ねじで上
から締付けたりして行ってもよいが、偏心軸でチップを
位置決め基準面3dに押し当てる図示のクランプねじ3
cであると、図6に示すように、シム7を用いての基準
面3dの位置調整が行え、刃先位置(加工面のR半径)
の微調整が許容される。なお、刃先位置の微調整は、周
知のマイクロユニットに採用されているような微調整機
構を採用して行うこともできる。As shown in FIG. 5, the holder 3 has a male screw foot 3a and a seat portion 3b on which the throw-away tip is seated.
And a clamp screw 3c for the chip. Chip 4
Can be fixed by pressing the clamp piece from above or tightening with a flat head screw from above, but the clamp screw 3 shown in the figure that presses the chip against the positioning reference surface 3d with an eccentric shaft is used.
If it is c, as shown in FIG. 6, the position of the reference surface 3d can be adjusted by using the shim 7, and the blade edge position (R radius of the machined surface)
Fine adjustment of is allowed. The fine adjustment of the blade edge position can be performed by using a fine adjustment mechanism such as that used in a well-known micro unit.
【0014】スローアウェイチップ4は、ここでは経済
性を考慮してネガティブ型の3角形チップを用いたが、
平行四辺形、四角形、丸駒等のチップでもよいし、ポジ
ティブ型のものの使用も制限されない。As the throw-away tip 4, a negative type triangular tip is used here in consideration of economy.
The chip may be a parallelogram, a quadrangle, a round piece, or the like, and the use of a positive type chip is not limited.
【0015】駆動機構5は、ハンドル5aを回転させ、
この回転運動をウォームギヤで回転軸2に伝えてこの軸
を回転させるようにしてある。即ち、図3に示すよう
に、ハンドル5aを取付けた入力軸5bの先端にウォー
ム軸5cを設け、一方、回転軸2の下端にはウォームホ
イール5dを取付けてこれ等を図3、4に示すように噛
み合わせてあり、ハンドル5aの操作方向次第で回転軸
2は右にも左にも回転する。5eは入力軸5bの支持安
定性を高める軸受けスリーブであり、このスリーブは基
部1に固定されている。The drive mechanism 5 rotates the handle 5a,
This rotative movement is transmitted to the rotary shaft 2 by a worm gear to rotate this shaft. That is, as shown in FIG. 3, a worm shaft 5c is provided at the tip of an input shaft 5b to which a handle 5a is attached, while a worm wheel 5d is attached to the lower end of the rotary shaft 2 and these are shown in FIGS. As described above, the rotating shaft 2 rotates rightward or leftward depending on the operating direction of the handle 5a. Reference numeral 5e is a bearing sleeve for enhancing the support stability of the input shaft 5b, and this sleeve is fixed to the base 1.
【0016】なお、ホルダ3は、加工面のR半径を大き
く変える必要がある場合には、サイズ(図5、6のR寸
法)の異なるものと交換する。When it is necessary to greatly change the R radius of the machined surface, the holder 3 is replaced with a holder having a different size (R dimension in FIGS. 5 and 6).
【0017】次に、例示のアタッチメントの使用法につ
いて述べる。図7は、ワークWの外周段部に曲面aを加
工する場合の一例である。図のように、曲面形成部を予
めテーパにするなどしてホルダ3との干渉が起こらない
状態にしてある場合には、刃物台を操作してアタッチメ
ント10をチップ4の刃先が曲面の始端Sにくるところ
まで動かす。チップの刃先は、刃物台で送りをかけなが
らワークの小径部の外周を削ってきてS点に到達させて
もよい。この場合にはS点に達したところ(このとき回
転軸2の軸心は曲面aのR中心にある)で刃物台による
アタッチメントの送りを止める。次に、前述のハンドル
5aを操作してホルダ3をチップの刃先がE点に至るま
で図中矢印方向に徐々に回転させると、これによる刃先
移動を送りとする切削が行われて被削域(斜線部)が削
り取られ、目的とする曲面aが出来る。The use of the exemplary attachment will now be described. FIG. 7 shows an example of processing the curved surface a on the outer peripheral step of the work W. As shown in the drawing, when the curved surface forming portion is tapered in advance so that interference with the holder 3 does not occur, the tool rest is operated to move the attachment 10 so that the tip of the tip 4 has a curved start end S. Move to where you come to. The tip of the tip may reach the point S by cutting the outer periphery of the small diameter part of the work while feeding it with a tool rest. In this case, the feed of the attachment by the tool rest is stopped when the point S is reached (the axis of the rotary shaft 2 is at the R center of the curved surface a at this time). Next, when the holder 3 is gradually rotated in the direction of the arrow in the drawing until the tip of the tip reaches the point E by operating the handle 5a, cutting is performed by the movement of the tip as a result, and the work area is cut. The (shaded portion) is scraped off to form the target curved surface a.
【0018】図8に示すように、ワークWの曲面加工部
が刃先を一気にS点にもっていけない形状になっている
場合にも、刃物台で少しずつ切込みをかけ(刃先をワー
クの軸心側に移す)、各切込み位置でホルダを回転させ
て被削域を数回に分けた加工を行うと支障なく切削を進
めることができる。この際の切刃の送り方向は、分割被
削域を一層削る毎に交互に逆転していくとホルダの無駄
な回転が無くなる。As shown in FIG. 8, even when the curved surface processing portion of the work W has a shape in which the cutting edge cannot be moved all the way to the S point at once, a small cut is made with the tool rest (the cutting edge is located on the axial center side of the work). Then, if the holder is rotated at each cutting position and the work area is divided into several times, the cutting can be advanced without any trouble. At this time, if the cutting blade feed direction is alternately reversed every time the divided work area is further cut, unnecessary rotation of the holder is eliminated.
【0019】図9に示すワークの外周の円弧溝の曲面b
も、図8と同様に被削域を数回に分けて切削するか又は
予め被削域を最小限に減らす鎖線の台形溝等を設けた後
にアタッチメントを使って切削すると困難なく加工でき
る。The curved surface b of the circular arc groove on the outer periphery of the work shown in FIG.
Also, as in the case of FIG. 8, the work area can be cut without difficulty by cutting the work area several times, or by using a trapezoidal groove having a chain line to reduce the work area in advance and then using an attachment.
【0020】[0020]
【発明の効果】以上述べたように、本発明のアタッチメ
ントを用いれば姿バイトやNC旋盤を用いずに市販の安
価な刃具で任意のR半径の曲面を手軽に加工でき、アタ
ッチメント自身も簡素で安価に作れるため経済的に極め
て有利になる。As described above, if the attachment of the present invention is used, a curved surface having an arbitrary R radius can be easily processed with a commercially available inexpensive cutting tool without using a figure bite or an NC lathe, and the attachment itself is simple. It is economically advantageous because it can be made at low cost.
【図1】本発明のアタッチメントの一例を示す斜視図FIG. 1 is a perspective view showing an example of an attachment of the present invention.
【図2】同上の側面図FIG. 2 is a side view of the above.
【図3】同上の部分破断平面図FIG. 3 is a partially cutaway plan view of the same as above.
【図4】図3のX−X線部の断面図FIG. 4 is a cross-sectional view taken along line XX of FIG.
【図5】ホルダの詳細を示す部分破断側面図FIG. 5 is a partially cutaway side view showing details of the holder.
【図6】異サイズホルダの部分破断側面図FIG. 6 is a partially cutaway side view of a different size holder.
【図7】曲面加工の一例を示す線図FIG. 7 is a diagram showing an example of curved surface processing.
【図8】曲面加工の他の例を示す線図FIG. 8 is a diagram showing another example of curved surface processing.
【図9】曲面加工の更に他の例を示す線図FIG. 9 is a diagram showing still another example of curved surface processing.
1 基部 1a 縦孔 1b 横孔 1c ボルト孔 2 回転軸 2a ソケット 3 ホルダ 3a 足 3b 座部 3c クランプねじ 3d 位置決め基準面 4 スローアウェイチップ 5 駆動機構 5a ハンドル 5b 入力軸 5c ウォーム軸 5d ウォームホイール 5e 軸受けスリーブ 6 ボルト 7 シム 10 曲面加工用アタッチメント A 刃物台 W ワーク 1 Base 1a Vertical Hole 1b Horizontal Hole 1c Bolt Hole 2 Rotating Shaft 2a Socket 3 Holder 3a Leg 3b Seat 3c Clamp Screw 3d Positioning Reference Surface 4 Throwaway Tip 5 Drive Mechanism 5a Handle 5b Input Shaft 5c Worm Shaft 5e Worm Wheel Sleeve 6 Bolt 7 Shim 10 Attachment for curved surface processing A Tool post W Work
Claims (1)
部の先端近くに縦向きに組付ける回転軸と、この回転軸
の上端に着脱自在に取付けるホルダと、刃先をホルダ外
周に突出させて前記ホルダの座部に装着する刃具と、基
部に組付けた前記回転軸の駆動機構とから成り、前記ホ
ルダを回転軸と共に回転させて刃具の刃先を回転軸中心
に移動させ、回転軸の軸心から刃具の刃先までをR半径
とする曲面をワークに加工するようにしてある旋盤用曲
面加工用アタッチメント。1. A base fixed to a tool post of a lathe, a rotary shaft vertically assembled near the tip of the base, a holder detachably attached to the upper end of the rotary shaft, and a blade tip protruding to the outer periphery of the holder. And a cutter attached to the seat of the holder, and a drive mechanism for the rotary shaft assembled to the base, and the holder is rotated together with the rotary shaft to move the blade edge of the cutter about the rotary shaft, A curved surface processing attachment for lathes, which is designed to machine a curved surface with an R radius from the axis to the cutting edge of the cutting tool.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17653892A JPH0655305A (en) | 1992-07-03 | 1992-07-03 | Curved surface machining attachment for lathe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17653892A JPH0655305A (en) | 1992-07-03 | 1992-07-03 | Curved surface machining attachment for lathe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0655305A true JPH0655305A (en) | 1994-03-01 |
Family
ID=16015352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17653892A Pending JPH0655305A (en) | 1992-07-03 | 1992-07-03 | Curved surface machining attachment for lathe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0655305A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020001560A (en) * | 2000-06-23 | 2002-01-09 | 야마자끼마자꾸가부시끼가이샤 | Turning Machining Tool |
-
1992
- 1992-07-03 JP JP17653892A patent/JPH0655305A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020001560A (en) * | 2000-06-23 | 2002-01-09 | 야마자끼마자꾸가부시끼가이샤 | Turning Machining Tool |
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