JPS6231511Y2

JPS6231511Y2 -

Info

Publication number: JPS6231511Y2
Application number: JP2649182U
Authority: JP
Priority date: 1982-02-25
Filing date: 1982-02-25
Publication date: 1987-08-12
Also published as: JPS58129980U

Description

【考案の詳細な説明】本考案は、切削工具に関し、特に切削ヘツドの
着脱作用が迅速かつ確実に行なわれるようにした
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutting tool, and in particular, is designed to quickly and reliably attach and detach a cutting head.

従来、この種の切削工具例えば、ボーリングカ
ツターでは、アダプターにボーリングバーが着脱
可能になつている形式が一般的である。 Conventionally, this type of cutting tool, for example, a boring cutter, generally has a boring bar that is detachably attached to an adapter.

しかしながら、切削工具の段取り替えなどか
ら、ボーリングバーの先端に構成される切削ヘツ
ド部分を着脱する方式が提案され出している。こ
れは、着脱作用が迅速に行なわれることから、作
業時間の短縮につながり有効性が認められ、その
着脱機構の開発が要望されている。 However, in order to change the setup of a cutting tool, a method has been proposed in which a cutting head portion formed at the tip of a boring bar is attached and detached. Since the attachment/detachment action is performed quickly, this method has been recognized to be effective in shortening the working time, and there is a demand for the development of such an attachment/detachment mechanism.

本考案は、上述の点に鑑みなされたもので、棒
状をなす工具本体の軸方向端には、截頭円錐部分
が形成され、この截頭円錐部分には、切刃チツプ
およびテーパー穴を備えた切削ヘツドが嵌合され
るとともに、これら工具本体および切削ヘツド間
には、これらを連結するけん引部材が内蔵され、
このけん引部材に対しては、けん引部材に軸方向
移動を与える回転調整子が備えられるように改善
された切削工具を提供するものである。 The present invention was developed in view of the above points, and a truncated conical portion is formed at the axial end of the rod-shaped tool body, and this truncated conical portion is provided with a cutting tip and a tapered hole. The cutting head is fitted, and a traction member is built in between the tool body and the cutting head to connect them.
For this traction member, an improved cutting tool is provided in which a rotary adjuster is provided to impart axial movement to the traction member.

以下、本考案切削工具の一実施例について、図
を参照しながら説明する。 An embodiment of the cutting tool of the present invention will be described below with reference to the drawings.

第１図において、１は、棒状をなす工具本体で
あり、その一端には、截頭円錐部分２が形成さ
れ、切刃チツプ３を備えた切削ヘツド４がキー５
の存在により所定位置で着脱されるようになつて
いる。 In FIG. 1, reference numeral 1 denotes a rod-shaped tool body, at one end of which a truncated conical portion 2 is formed, and a cutting head 4 equipped with a cutting tip 3 is connected to a key 5.
Due to the presence of , it can be attached and detached at a predetermined position.

この切削ヘツド４は、前記截頭円錐部分２に嵌
合するテーパー穴６およびけん引部材７を受入れ
る受入れ穴８がそれぞれ連設されている。 The cutting head 4 is provided with a tapered hole 6 that fits into the frusto-conical portion 2 and a receiving hole 8 that receives the traction member 7, respectively.

そして、このけん引部材７は、工具本体１およ
び切削ヘツド４間に内蔵されるもので図示の場合
では、その軸部９が前記受入れ穴８内にあり、ま
た、その一端に形成された花弁凸起１０が、工具
本体１の係止穴１１内に位置する。また、けん引
部材７の略中央部位には、テーパー状の係合穴１
２が穿設され、この係合穴１２に対しては、回転
調整子１３の円錐部分１４が係合する。 The traction member 7 is built in between the tool body 1 and the cutting head 4, and in the illustrated case, its shaft portion 9 is located within the receiving hole 8, and the traction member 7 has a petal convex formed at one end thereof. The holder 10 is located within the locking hole 11 of the tool body 1. In addition, a tapered engagement hole 1 is provided approximately at the center of the traction member 7.
2 is bored, and the conical portion 14 of the rotation adjuster 13 engages with this engagement hole 12.

この回転調整子１３は、切削ヘツド２の側穴１
５から挿入され、いわゆる両端支持されるもの
で、その移動によりけん引部材７をボーリングバ
ー１の軸方向に移動する。この場合、けん引部材
７は、軸方向の移動が確実に行なえるように、受
入れ穴８内には、スプリング材１６が位置するよ
うになつている。 This rotation adjuster 13 is connected to the side hole 1 of the cutting head 2.
5 and is supported at both ends, and its movement moves the traction member 7 in the axial direction of the boring bar 1. In this case, a spring member 16 is located in the receiving hole 8 so that the traction member 7 can be reliably moved in the axial direction.

なお、本実施例では、切刃チツプ３については
円板状のスローアウエイチツプが、切削ヘツド４
のチツプ座１７に直接取付けられるようになつて
いる。しかし、これに限らず、カートリツジ形式
も適宜採用でき、また、切刃チツプ３の形状も
種々変更できる。また、本考案では、けん引部材
７については、花弁凸起１０が工具本体１側に位
置するような構成になつているが、これとは逆に
例えば、実開昭53−160874号公報にみられるよう
に花弁凸起１０を切削ヘツド４側に位置させ、回
転調整子１３を工具本体１側に位置させるように
してもよい。 Note that in this embodiment, the cutting blade tip 3 is a disc-shaped throw-away tip that is connected to the cutting head 4.
It is designed to be directly attached to the chip seat 17 of the chip. However, the present invention is not limited to this, and a cartridge format may be adopted as appropriate, and the shape of the cutting blade tip 3 may be changed in various ways. Further, in the present invention, the traction member 7 is configured such that the petal protrusion 10 is located on the tool body 1 side. The petal protrusions 10 may be located on the cutting head 4 side, and the rotation adjuster 13 may be located on the tool body 1 side, so that

本考案は、以上説明したように切削ヘツド４が
けん引部材７および回転調整子１３の協働作用に
よりボーリングバー１に着脱される構成を採つた
ものであるから、その操作性が良好となるもので
ある。 As explained above, the present invention adopts a structure in which the cutting head 4 is attached to and detached from the boring bar 1 through the cooperative action of the traction member 7 and the rotation adjuster 13, so that its operability is improved. It is.

また、ボーリングバー１および切削ヘツド４の
連結は、直接的にはテーパー嵌合によるものであ
り、その取付け剛性も高いものである。 Further, the boring bar 1 and the cutting head 4 are directly connected by tapered fitting, and the mounting rigidity thereof is high.

[Brief explanation of the drawing]

第１図は、本考案ボーリングカツターの一実施
例を示す要部を切欠した正面図、第２図は、けん
引部材の正面図、第３図は、その側面図である。１…ボーリングバー、２…截頭円錐部分、３…
切刃チツプ、４…切削ヘツド、６…テーパー穴、
７…けん引き部材、８…受入れ穴、１０…花弁凸
起、１１…係止穴、１２…係合穴、１３…回転調
整子、１４…円錐部分、１５…側穴、１６…スプ
リング材。 FIG. 1 is a cutaway front view of an embodiment of the boring cutter of the present invention, FIG. 2 is a front view of the traction member, and FIG. 3 is a side view thereof. 1... Boring bar, 2... truncated conical part, 3...
Cutting blade tip, 4...cutting head, 6...tapered hole,
7... Traction member, 8... Receiving hole, 10... Petal protrusion, 11... Locking hole, 12... Engagement hole, 13... Rotation adjuster, 14... Conical portion, 15... Side hole, 16... Spring material.

Claims

[Claims for Utility Model Registration] A truncated conical portion 2 is formed at the axial end of a rod-shaped tool body 1, and this truncated conical portion 2 includes:
A cutting head 4 having a cutting tip 3 and a tapered hole 6 is fitted, and these tool bodies 1
A traction member 7 is built in between the cutting head 4 and the cutting head 4, and the traction member 7 is provided with a rotation adjuster 13 that allows the traction member 7 to move in the axial direction. The traction member 7 has a petal protrusion 10 protruding in the diametrical direction at one end, and a tapered engagement hole 12 is opened in the diametrical direction in the center portion, and the rotation The adjuster 13 is supported at both ends by side holes 15, and the conical portion 14 at the center is located in the engagement hole 12, and the tool body 1 is moved by moving the traction member 7 in the axial direction. and a cutting tool characterized in that the cutting head 4 is detachable.