JPS6337125Y2 - - Google Patents

Info

Publication number
JPS6337125Y2
JPS6337125Y2 JP1982167984U JP16798482U JPS6337125Y2 JP S6337125 Y2 JPS6337125 Y2 JP S6337125Y2 JP 1982167984 U JP1982167984 U JP 1982167984U JP 16798482 U JP16798482 U JP 16798482U JP S6337125 Y2 JPS6337125 Y2 JP S6337125Y2
Authority
JP
Japan
Prior art keywords
tool
hole
adjustment screw
tongue
screw
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.)
Expired
Application number
JP1982167984U
Other languages
Japanese (ja)
Other versions
JPS5974011U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP16798482U priority Critical patent/JPS5974011U/en
Publication of JPS5974011U publication Critical patent/JPS5974011U/en
Application granted granted Critical
Publication of JPS6337125Y2 publication Critical patent/JPS6337125Y2/ja
Granted legal-status Critical Current

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Description

【考案の詳細な説明】 この考案はストレートシヤンクを持つた回転切
削工具に関する。この種の切削工具には従来から
ドリル、エンドミル、リーマ等がある。こられの
回転切削工具を保持する保持具には種々あるが、
代表的なものを第1図第2図に示した。
[Detailed description of the invention] This invention relates to a rotary cutting tool having a straight shank. Conventional cutting tools of this type include drills, end mills, reamers, and the like. There are various types of holders that hold these rotary cutting tools.
Typical examples are shown in Figure 1 and Figure 2.

第1図では円筒形のストレートシヤンク5をテ
ーパコレツト3だけで保持しているので、異状な
スラスト荷重や、切削トルクを受けたり、スラス
ト荷重や切削トルクの大きい工具になるとテーパ
コレツト3内で工具シヤンクがスリツプして保持
具内に工具が押しこまれたり、スリツプ中は工具
切刃が無理な状態で加工物にくいこんだままとな
り、工具切刃にチツピングが発生する等の欠点が
あり、多軸ボール盤、トランスフアマシン、マシ
ニングセンタ等に使用できない。この欠点を補う
ために、第2図に示す保持具を使用している。第
2図では切削トルクを受けるドライブピース8と
スラスト荷重を受け工具長さを調整する調整ねじ
11が個々に本体1に収納されている。切削中の
切削トルクを受け工具長さを調整するためのキー
溝10が軸長手方向に設けてあり、ドライブピー
ス8が軸方向に自在に移動できるようになつてい
る。特にドリル等のように、スラスト荷重、切削
トルクの大きい工具の保持にはストレートシヤン
ク後部に平取りタングをつけて、第2図のように
ドライブピース8にストレートシヤンクの平取に
タング部を挿入しテーパコレツト3により締めつ
けて固定しているので第1図のテーパコレツト3
だけの保持とちがつてスラスト荷重、切削トルク
をドライブピース8と調整ねじ11により充分に
支えられるようになつているが、機械に取りつけ
使用する場合、切削中に工具が摩耗したり破損し
たりした時、途中で工具交換をしなければならな
い。第2図の保持具では調整ねじ11の操作は図
上貫通穴2の上方からドライバー又はレンチで操
作しなければならず、機械に保持具を取りつけた
ままで工具交換はできても工具の突きだし長さを
調整する場合調整ねじ11を外部から操作できな
い、従つて新らしい工具又は再研削した工具を保
持具に取りつけても、所定の工具突きだし長さに
することができない。一定の深さをもつた穴を多
数穿孔したり、一定の側面を多数個加工しなけれ
ばならない時、工具交換の度に保持具を機械より
取りはずして工具交換後調整ねじを操作して、工
具の必要な突きだし長さに合わせて、工具を保持
具に固定し更に機械に取りつけなければならない
等非常に不便であるために多軸ボール盤、トラン
スフアマシン、マシニングセンタ等には安易に使
用できない。又ドライブピース8にはピン9が両
端より突きだすように打ちこまれていてピン9の
両端はキー溝10の軸長手方向に自在に移動でき
切削トルクを支えている。したがつてこの機械の
回転工具保持具ではドライブピース8収納部の外
径が小さくなるとキー溝10を設けた分だけ強度
が小さくなり剛性が低下するたせの製作上の制約
を受ける等大きな欠点がある。
In Fig. 1, the cylindrical straight shank 5 is held only by the taper collet 3, so if the tool is subjected to an abnormal thrust load or cutting torque, or if the tool has a large thrust load or cutting torque, the tool shank will shank inside the taper collet 3. Multi-axis Cannot be used in drilling machines, transfer machines, machining centers, etc. In order to compensate for this drawback, a holder shown in FIG. 2 is used. In FIG. 2, a drive piece 8 that receives a cutting torque and an adjustment screw 11 that receives a thrust load and adjusts the tool length are individually housed in the main body 1. A keyway 10 is provided in the longitudinal direction of the shaft for receiving cutting torque during cutting and adjusting the tool length, so that the drive piece 8 can freely move in the axial direction. In particular, to hold tools with large thrust loads and cutting torques, such as drills, a flat tongue is attached to the rear of the straight shank, and the tongue part is attached to the flat of the straight shank on the drive piece 8 as shown in Figure 2. The taper collet 3 in Fig. 1 is inserted and fixed by tightening with the taper collet 3.
The thrust load and cutting torque can be sufficiently supported by the drive piece 8 and adjustment screw 11, but if the tool is attached to a machine and used, there is a possibility that the tool will wear out or break during cutting. When doing so, you will have to change tools midway. In the holder shown in Figure 2, the adjustment screw 11 must be operated from above the through hole 2 in the figure with a screwdriver or wrench, and even if the tool can be replaced with the holder attached to the machine, the protrusion length of the tool is When adjusting the length, the adjusting screw 11 cannot be operated from the outside, so even if a new tool or a reground tool is attached to the holder, the predetermined tool protrusion length cannot be achieved. When drilling a large number of holes with a certain depth or machining a large number of fixed side surfaces, remove the holder from the machine every time you change the tool, operate the adjustment screw after changing the tool, and adjust the tool. It is very inconvenient that the tool must be fixed to a holder and then attached to the machine according to the required protrusion length, so it cannot be easily used in multi-spindle drilling machines, transfer machines, machining centers, etc. Further, a pin 9 is driven into the drive piece 8 so as to protrude from both ends, and both ends of the pin 9 can freely move in the longitudinal direction of the axis of the keyway 10 and support cutting torque. Therefore, in the rotary tool holder of this machine, when the outer diameter of the drive piece 8 storage portion becomes smaller, the strength decreases by the provision of the keyway 10, and there are major drawbacks such as being subject to manufacturing constraints due to a decrease in rigidity. be.

以上の欠点を解消するために考案されたのが実
施例として第4図、第5図、第6図に示されたも
のである。第4図は外周におねじを形成した調整
ねじ11にタング支え金17を挿入し、ピン23
をピン穴22に打ちこんで結合一体化し調整金2
4が形成される。こうして一体化した調整金を第
6図のように本体1に収納し、調整ねじ作用とド
ライブピース作用を兼ねさせる。また右刃工具に
は左ねじを左刃工具には右ねじの調整ねじ11を
形成することによつて、工具から受けるスラスト
荷重、切削トルクを充分支えることができる。本
考案の回転工具保持具を使用すると、切削中に工
具切刃の摩耗、破損等による工具交換は保持具を
機械にとりつけたままでできて、しかも工具の必
要突きだし長さは保持具に工具を挿入し工具その
ものを左か右に手で回転させながら簡単に調整が
できる。又本体にキー溝がないので剛性が高く巾
広い寸法の工具に適用することができる等の利点
がある。
Embodiments shown in FIGS. 4, 5, and 6 have been devised to solve the above-mentioned drawbacks. FIG. 4 shows that the tongue support 17 is inserted into the adjustment screw 11 with a thread formed on the outer periphery, and the pin 23 is inserted into the adjustment screw 11.
Drive it into the pin hole 22 to integrate it and adjust the adjustment metal 2.
4 is formed. The adjustment piece integrated in this way is housed in the main body 1 as shown in FIG. 6, and serves both the function of the adjustment screw and the function of the drive piece. Further, by forming the adjustment screw 11 with a left-hand thread on the right-hand tool and a right-hand thread on the left-hand tool, the thrust load and cutting torque received from the tool can be sufficiently supported. By using the rotary tool holder of the present invention, tools can be replaced due to wear or breakage of the tool cutting edge during cutting, while the holder remains attached to the machine. Adjustments can be made easily by inserting the tool and rotating it by hand to the left or right. Also, since there is no keyway in the main body, it has the advantage of being highly rigid and can be applied to tools with wide dimensions.

以下この考案の実施例の第4,5,6図により
説明する。調整ねじ11には軸方向に切り割り1
2と切り割り12に連続して長穴13が設けられ
貫通している。又、調整ねじ11にはタング支え
金17を挿入するための挿入孔が設けてある。こ
の挿入孔は円錐孔14、円筒孔15から形成され
ている。タング支え金17には外周面19が調整
ねじ11の谷径よりわずかに小さな円筒部21と
それに連なる円錐部20が形成される。円筒部2
1には軸に直交する穴22が穿孔され、端部にタ
ング挿入溝18が形成されている。調整ねじ11
の円錐孔14にタング支え金17の円筒形21よ
り挿入し、調整ねじ11の円錐孔14の面にタン
グ支え金17の円錐形20の面が当接するまで挿
入、調整ねじの長穴13にタング支え金17のピ
ン穴22を向わせピン穴にピン穴23を打ちこん
で結合する。
Embodiments of this invention will be explained below with reference to FIGS. 4, 5, and 6. The adjustment screw 11 has a cut 1 in the axial direction.
An elongated hole 13 is provided continuously to 2 and the cut 12 and penetrates through it. Further, the adjustment screw 11 is provided with an insertion hole into which a tongue support metal 17 is inserted. This insertion hole is formed of a conical hole 14 and a cylindrical hole 15. The tongue support 17 is formed with a cylindrical portion 21 whose outer circumferential surface 19 is slightly smaller than the root diameter of the adjustment screw 11 and a conical portion 20 connected to the cylindrical portion 21 . Cylindrical part 2
1 has a hole 22 perpendicular to the axis, and a tongue insertion groove 18 formed at the end. Adjustment screw 11
Insert the cylindrical shape 21 of the tongue support 17 into the conical hole 14 of the adjustment screw 11 until the surface of the conical shape 20 of the tongue support 17 comes into contact with the surface of the conical hole 14 of the adjustment screw 11. The pin holes 22 of the tongue support metal 17 are facing each other, and the pin holes 23 are driven into the pin holes to connect them.

第4図のように結合し一体化した調整ねじ11
とタング支え金17を第6図の本体1の後端(図
では上方より)ねじ2にそつて本体1の中にねじ
こむ。(以下調整ねじ11とタング支え金17を
結合一体化したものを、調整金と呼ぶ)。調整金
24を収納した本体1の締めつけナツト4の開口
よりタング付きストレートシヤンク5を挿入し、
タング25がタング挿入溝18に納まると調整金
24とストレートシヤンク5は結合状態となり工
具を手で回転させると調整金も連動して回転し図
上、上下に移動するので、工具を回転させ工具突
きだし長さを決めたら、締めつけナツト4を締め
つける。締めつけられたテーパコレツト3は本体
1のテーパ面6にそつて図上、上に押し上げられ
る。かくしてテーパコレツト3はたわんで内周面
7が工具シヤンク5の外周面を圧して工具を強力
に把持する。第6図では右刃工具に左ねじの調整
金を使用した。今切削中に過大な切削トルクが工
具にかかり、テーパコレツト3内でシヤンク5が
スリツプすると、本体1と同時回転の調整金24
のタング挿入溝18の側面もスリツプし、タング
25を押圧する。するとタング25のドライブ作
用により調整金が下方に進み、当然工具も下方に
押し下げられる。しかし工具刃先は被加工物に突
き当つているため、むしろ工具はタング支え金1
7を押し上げる状態となる。つまり、タング25
がタング支え金17を押し上げ調整ねじ11内に
押しこまれた状態となる。押し込まれたタング支
え金17の円錐部20の面は調整ねじ11の円錐
孔の面14を押圧する。調整ねじにはスリ割り1
2があるので、外側に押し拡げられて調整ねじ1
1が本体のねじ2に食いこんで強力にロツクされ
る。ロツクされた調整ねじ11は本体に一時的に
強力に固定され、本体と一緒に回転するので、ピ
ン23を介して連動しているタング支え金17や
工具も通常の回転で送られる。これらの機械は瞬
時に作動し、スラスト荷重、切削トルクを完全に
支えるので安定した切削を続けることができる。
Adjustment screw 11 combined and integrated as shown in Fig. 4
Then, screw the tongue support 17 into the main body 1 along the screw 2 at the rear end of the main body 1 in FIG. 6 (from the top in the figure). (Hereinafter, the combination of the adjustment screw 11 and the tongue support metal 17 will be referred to as an adjustment metal.) Insert the straight shank 5 with a tang into the opening of the tightening nut 4 of the main body 1 that houses the adjustment metal 24,
When the tongue 25 is seated in the tongue insertion groove 18, the adjustment piece 24 and the straight shank 5 are connected, and when the tool is rotated by hand, the adjustment piece also rotates and moves up and down in the figure, so the tool cannot be rotated. After determining the tool protrusion length, tighten the tightening nut 4. The tightened taper collet 3 is pushed upward in the drawing along the tapered surface 6 of the main body 1. Thus, the taper collet 3 is bent and the inner circumferential surface 7 presses against the outer circumferential surface of the tool shank 5, thereby strongly gripping the tool. In Figure 6, a left-hand threaded adjustment metal was used for the right-hand tool. If an excessive cutting torque is applied to the tool during cutting and the shank 5 slips inside the taper collet 3, the adjustment bolt 24, which rotates simultaneously with the main body 1,
The side surface of the tongue insertion groove 18 also slips and presses the tongue 25. Then, due to the drive action of the tongue 25, the adjustment piece advances downward, and naturally the tool is also pushed downward. However, since the cutting edge of the tool is in contact with the workpiece, the tool is actually
7 will be pushed up. In other words, tongue 25
pushes up the tongue support 17 and is pushed into the adjustment screw 11. The surface of the conical portion 20 of the pushed-in tongue support 17 presses against the surface 14 of the conical hole of the adjusting screw 11. Slot 1 on adjustment screw
2, it is pushed outward and the adjustment screw 1
1 bites into the screw 2 of the main body and is strongly locked. Since the locked adjustment screw 11 is temporarily strongly fixed to the main body and rotates together with the main body, the tongue support 17 and the tool, which are interlocked via the pin 23, are also fed with normal rotation. These machines operate instantly and fully support thrust loads and cutting torque, allowing stable cutting to continue.

本考案の一体化した調整金24の調整ねじ11
とタング支え金との結合面は円錐面と円筒面であ
り、かつピン23で結合したものであり、かつ調
整ねじのねじれ方向を切刃のねじれ方向と逆にし
てあるので、スラスト荷重や切削トルクを充分に
支えることができるだけでなく、切削中に切削条
件をこえたスラスト荷重や切削トルクを受けて工
具がスリツプした場合でも、調整ねじはタング支
え金の斜面に接して径方向に広がつて本体のねじ
に食いこみ、強力にロツクされ、正常な切削を続
けることができるのである。又、製作も容易であ
る。この回転工具保持具は調整ねじのロツク相乗
効果により安定した切削ができると共に機外から
の工具交換後の工具突きだし長さも手で工具を回
転させながら簡単に調整できるので、安易に使用
できるので多軸ボール盤、トランフアマシン、マ
シニングセンタ等専用機に適している。又、保持
具自身の剛性が大きい等多くの利点がある。
Adjustment screw 11 of integrated adjustment metal 24 of the present invention
The connecting surfaces of the tongue support and the tongue support are a conical surface and a cylindrical surface, and they are connected by a pin 23, and the twisting direction of the adjustment screw is opposite to the twisting direction of the cutting blade, so thrust loads and cutting Not only can it sufficiently support the torque, but even if the tool slips due to a thrust load or cutting torque that exceeds the cutting conditions during cutting, the adjustment screw will contact the slope of the tongue support and expand in the radial direction. It bites into the thread of the main body and is strongly locked, allowing normal cutting to continue. Moreover, it is easy to manufacture. This rotary tool holder allows for stable cutting due to the synergistic effect of locking the adjustment screw, and the tool protrusion length can be easily adjusted by hand while rotating the tool after changing the tool from outside the machine, making it easy to use and versatile. Suitable for dedicated machines such as shaft drilling machines, transfer machines, and machining centers. In addition, there are many advantages such as the rigidity of the holder itself is high.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来品の断面図、第2図は同じく断面
図、第3図は第2図の側面図、第4図は本考案の
調整金組立図、第5図は第4図のA−A断面図、
第6図は本考案の実施例の断面図である。 1……本体、2……内ねじ、3……テーパコレ
ツト、4……締めつけナツト、5……ストレート
シヤンク、6……テーパ内周面、7……テーパコ
レツト内周面、8……ドライブピース、9……ピ
ン、10……キー溝、11……調整ねじ、12…
…スリ割り、13……長穴、14……調整ねじ円
錐面、15……円筒面、16……切り欠け、17
……タング支え金、18……タング挿入溝、19
……外周面、20……円錐部、21……円筒部、
22……ピン穴、23……ピン、24……調整
金、25……タング。
Fig. 1 is a sectional view of the conventional product, Fig. 2 is a sectional view of the same, Fig. 3 is a side view of Fig. 2, Fig. 4 is an assembly diagram of the adjustment metal of the present invention, and Fig. 5 is A of Fig. 4. -A sectional view,
FIG. 6 is a sectional view of an embodiment of the present invention. 1...Body, 2...Inner thread, 3...Taper collet, 4...Tightening nut, 5...Straight shank, 6...Tapered inner circumferential surface, 7...Tapered collet inner circumferential surface, 8...Drive piece , 9...pin, 10...keyway, 11...adjustment screw, 12...
...Slot, 13...Elongated hole, 14...Adjustment screw conical surface, 15...Cylindrical surface, 16...Notch, 17
...Tongue support metal, 18...Tongue insertion groove, 19
...outer peripheral surface, 20...conical part, 21...cylindrical part,
22...Pin hole, 23...Pin, 24...Adjustment metal, 25...Tang.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 回転工具保持具にストレートシヤンク工具を保
持するテーパコレツトとテーパコレツトを締めつ
けるナツトを有し、保持具内部に、工具突き出し
長さを調整しかつスラスト荷重を受けとめる調整
ねじを収納した回転工具保持具において、調整ね
じに軸方向のスリ割りとスリ割に連なる長穴を軸
直角に穿通させ、かつスリ割り端面側から軸方向
に円錐孔と円筒孔を連結して設け、前記調整ねじ
の円錐孔と円筒孔とに挿入されるタング支え金に
はタング挿入溝をもつタング支え部と前記円錐孔
に接する円錐部と円筒孔に挿入される円筒部とが
形成されると共に、円筒部には軸直角の穴を設
け、調整ねじの長穴からタング支え金の円筒部に
設けたピン孔にピンを挿入し、ねじれ方向を工具
のねじれ方向と逆にした調整ねじを使用した回転
工具保持具。
A rotary tool holder having a taper collet for holding a straight shank tool in the rotary tool holder and a nut for tightening the taper collet, and housing an adjustment screw for adjusting the tool protrusion length and receiving a thrust load inside the holder, The adjusting screw has an axial slot and an elongated hole connected to the slot perpendicular to the axis, and a conical hole and a cylindrical hole are connected in the axial direction from the end surface of the slot. A tongue support part to be inserted into the hole is formed with a tongue support part having a tongue insertion groove, a conical part in contact with the conical hole, and a cylindrical part to be inserted into the cylindrical hole. A rotary tool holder that uses an adjustment screw with a hole provided, a pin inserted through the elongated hole of the adjustment screw into a pin hole provided in the cylindrical part of the tongue support, and the twisting direction of the screw is opposite to that of the tool.
JP16798482U 1982-11-08 1982-11-08 rotary tool holder Granted JPS5974011U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16798482U JPS5974011U (en) 1982-11-08 1982-11-08 rotary tool holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16798482U JPS5974011U (en) 1982-11-08 1982-11-08 rotary tool holder

Publications (2)

Publication Number Publication Date
JPS5974011U JPS5974011U (en) 1984-05-19
JPS6337125Y2 true JPS6337125Y2 (en) 1988-10-03

Family

ID=30367368

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16798482U Granted JPS5974011U (en) 1982-11-08 1982-11-08 rotary tool holder

Country Status (1)

Country Link
JP (1) JPS5974011U (en)

Also Published As

Publication number Publication date
JPS5974011U (en) 1984-05-19

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