JPH0674220U - Wedge for throw-away type cutter - Google Patents
Wedge for throw-away type cutterInfo
- Publication number
- JPH0674220U JPH0674220U JP2087193U JP2087193U JPH0674220U JP H0674220 U JPH0674220 U JP H0674220U JP 2087193 U JP2087193 U JP 2087193U JP 2087193 U JP2087193 U JP 2087193U JP H0674220 U JPH0674220 U JP H0674220U
- Authority
- JP
- Japan
- Prior art keywords
- wedge
- throw
- cutter
- tip
- cutter body
- 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.)
- Withdrawn
Links
Landscapes
- Milling Processes (AREA)
Abstract
(57)【要約】
【目的】 チップを楔で装着するスローアウェイ式カッ
タにおいて、楔の締め付け力によるカッタ本体の変形と
歪を抑制する。
【構成】 楔５の中間にはすり割り８を設け、すり割り
８の上側は締め付けねじ４の螺合しない貫通穴９とす
る。
【効果】 スローアウェイチップ１３をカッタ本体１に
押え付ける力は、上側より下側が強くなり、その結果、
カッタ本体の変形と歪が抑制される。
(57) [Summary] [Purpose] In a throw-away type cutter in which the tip is attached by a wedge, the deformation and distortion of the cutter body due to the tightening force of the wedge are suppressed. [Structure] A slit 8 is provided in the middle of the wedge 5, and an upper side of the slit 8 is a through hole 9 into which the fastening screw 4 is not screwed. [Effect] The force with which the throw-away tip 13 is pressed against the cutter body 1 becomes stronger from the upper side to the lower side.
Deformation and distortion of the cutter body are suppressed.
Description
【０００１】[0001]
本考案は、スローアウェイ式カッタ用の楔に関わり、特に刃数の多いカッタに 好適である。 The present invention relates to a wedge for a throw-away type cutter, and is particularly suitable for a cutter having a large number of blades.
【０００２】[0002]
従来より、チップ座に設けたねじ穴に螺合させたねじを締め付けて楔を沈み込 ませることにより、平板状のスローアウェイチップをカッタ本体側に押し付けて 装着させる方法は、スローアウェイ式カッタの主要な構造の一つとして広く実用 されている。 Conventionally, the method of pressing the flat throwaway tip against the cutter body side by tightening the screw screwed into the screw hole provided in the tip seat and sinking the wedge is the method of the throwaway type cutter. It is widely used as one of the main structures.
【０００３】 ところで、このとき使用する楔は、その楔角がチップ座の楔角と等しくなるこ とが理想的であるが、製造誤差および楔の変形などを考慮して、通常はチップ座 の楔角より若干大き目にする。こうすることにより、楔とカッタ本体との接触面 あるいは楔とスローアウェイチップとの接触面における接触状態は、全面当りと なるか、主に楔の上面側すなわちチップの切れ刃に近い側で接触することになり 、チップを固定する強度が安定して、切削の安定化が図られる。By the way, it is ideal for the wedge used at this time that the wedge angle is equal to the wedge angle of the tip seat. However, in consideration of manufacturing errors, deformation of the wedge, etc., the wedge seat usually has a wedge angle. Make it slightly larger than the wedge angle. By doing so, the contact state on the contact surface between the wedge and the cutter body or the contact surface between the wedge and the throw-away tip will be full-face contact, or will be mainly on the upper surface side of the wedge, that is, the side near the cutting edge of the tip. As a result, the strength for fixing the tip is stable and the cutting is stabilized.
【０００４】[0004]
しかしながら、楔を利用した装着方法は、楔の締め付け力が強固であり過ぎる ため、締め付け力を直接支持するカッタ本体部分が塑性変形を起こしたり、カッ タ全体に歪が生じたりすることがある。特に、刃数の多いカッタでは、チップ座 とチップ座との間に形成されるカッタ本体部分の肉厚が薄くなるため、前記のよ うな変形現象が顕著となる。 However, since the tightening force of the wedge is too strong in the mounting method using the wedge, the cutter body portion that directly supports the tightening force may be plastically deformed or the entire cutter may be distorted. In particular, in a cutter having a large number of blades, the thickness of the cutter body portion formed between the tip seats becomes thin, so that the above-described deformation phenomenon becomes remarkable.
【０００５】[0005]
本考案は、上記の課題を解決するためになされたもので、楔の上面と下面との 中間に楔のねじ穴軸に対しほぼ垂直方向にすり割りを設けるとともに、楔の上面 とすり割りとの間は締め付けねじの外径より大きな直径の貫通穴としたことを特 徴としている。 The present invention has been made in order to solve the above-mentioned problems, and a slit is provided in the middle between the upper surface and the lower surface of the wedge in a direction substantially perpendicular to the screw hole axis of the wedge, and the upper surface of the wedge and the slit. It is characterized by a through hole with a diameter larger than the outer diameter of the tightening screw.
【０００６】[0006]
本考案による楔では、楔の上面と下面との中間にすり割りが設けてあるために 、すり割りより上側の部分は上下方向に弾性変形しやすくなる。また、前記部分 には締め付け用ねじの外径より大きな直径の貫通穴を明けてあるので、締め付け ねじと楔とが螺合するのは、すり割りより下側の部分になる。このような楔を締 め付けねじを回して沈み込ませると、楔前面の下側の面に主要な締め付け力が作 用することになる。カッタ本体は、外周側に近いほど肉厚が薄くなり、締め付け 方向の力による曲げモーメントの影響も受けやすくなるため、締め付け力が作用 する点を下げる（カッタの中心側に移動させる）ことは、カッタ本体の変形を抑 制する。 In the wedge according to the present invention, since the slit is provided between the upper surface and the lower surface of the wedge, the portion above the slit is easily elastically deformed in the vertical direction. Further, since a through hole having a diameter larger than the outer diameter of the tightening screw is formed in the above-mentioned portion, the tightening screw and the wedge are screwed to each other at a portion below the slot. When such a wedge is tightened and the set screw is turned down, the main clamping force is exerted on the lower surface of the wedge front. Since the thickness of the cutter body becomes thinner toward the outer circumference side, it becomes more susceptible to the bending moment due to the force in the tightening direction, so lowering the point where the tightening force acts (moving to the center side of the cutter) Controls the deformation of the cutter body.
【０００７】 また、楔前面の上側の面は、同下側より小さな締め付け力ながら楔として作用 しているので、切れ刃に働く切削力に抗してスローアウェイチップを十分支持す ることができる。Further, the upper surface of the front surface of the wedge acts as a wedge with a smaller tightening force than the lower surface, so that the throw-away tip can be sufficiently supported against the cutting force acting on the cutting edge. .
【０００８】[0008]
次に、図を参照しながら、本考案の一実施例を以下に説明する。 An embodiment of the present invention will be described below with reference to the drawings.
【０００９】 図１はその一実施例を示す楔部分の断面図であり、図２（ａ）は前記楔の斜め 後方からの斜視図、同図（ｂ）は斜め前方からの斜視図、図４はカッタ全体を示 す正面図である。カッタ本体１の外周にはカッタの厚さ方向に貫通した溝状のチ ップ座３があって、両端に勝手違いのねじが切られた締め付けねじ４が前記チッ プ座３に設けたねじ穴２および楔５に設けたねじ穴１４に螺合し、この締め付け ねじ４を旋回して楔５を降下させることにより、スローアウェイチップ１３がカ ッタ本体１に装着される。FIG. 1 is a cross-sectional view of a wedge portion showing one embodiment thereof, FIG. 2 (a) is a perspective view of the wedge from diagonally rear, and FIG. 2 (b) is a perspective view of the wedge from front. 4 is a front view showing the entire cutter. On the outer periphery of the cutter body 1, there is a groove-shaped tip seat 3 penetrating in the thickness direction of the cutter, and tightening screws 4 with opposite-handed threads on both ends are provided on the tip seat 3. The throw-away tip 13 is attached to the cutter body 1 by screwing into the screw hole 14 provided in the hole 2 and the wedge 5, and turning the fastening screw 4 to lower the wedge 5.
【００１０】 楔５には、上面６と下面７との中間にはねじ穴１４の軸線に対しほぼ垂直方向 にすり割り８があるとともに、楔５の上面６と前記すり割り８との間は締め付け ねじ４の外径より大きな直径の貫通穴９が明けてある。The wedge 5 has a slot 8 midway between the upper surface 6 and the lower surface 7 in a direction substantially perpendicular to the axis of the screw hole 14, and between the upper surface 6 of the wedge 5 and the slot 8. A through hole 9 having a diameter larger than the outer diameter of the tightening screw 4 is opened.
【００１１】 このような楔では、楔５と締め付けねじ４とが螺合している箇所はすり割り８ より下側の部分となるため、締め付けねじ４を操作させて楔５を沈み込ませたと きに、スローアウェイチップ１３をカッタ本体１に押え付ける力が大きく作用す るのは、楔５の前面１１の下側の部分となる。また、楔５の上側の部分は弾性変 形するために下側よりは小さな締め付け力となるものの、楔としての機能を維持 しているために、スローアウェイチップ１３の切れ刃に負荷される切削力に抗し てチップを十分に支持することができる。In such a wedge, the portion where the wedge 5 and the tightening screw 4 are screwed together is located below the slot 8. Therefore, when the wedge 5 is depressed by operating the tightening screw 4. At this time, it is in the lower part of the front surface 11 of the wedge 5 that the force that presses the throw-away tip 13 against the cutter body 1 largely acts. Further, although the upper part of the wedge 5 is elastically deformed, the tightening force is smaller than that of the lower part, but since the function as the wedge is maintained, the cutting load of the cutting edge of the throw-away tip 13 is maintained. The chip can be sufficiently supported against the force.
【００１２】 なお、本実施例では、締め付け力の作用する点をより一層明確にするために 、楔５の後面１０にヌスミ溝１２を設けている。これは、前面１１と同様、後面 １０についても、大きな締め付け力のかかる点をヌスミ溝１２の下側に移動させ るこになり、カッタ本体１の変形抑制に効果的に作用する。In the present embodiment, in order to further clarify the point at which the tightening force acts, the rear surface 10 of the wedge 5 is provided with a smooth groove 12. As with the front surface 11, the rear surface 10 moves a point to which a large tightening force is applied to the lower side of the slime groove 12, which effectively acts to suppress the deformation of the cutter body 1.
【００１３】 また、図３には本考案による他の一実施例を示す。これは、スローアウェイチ ップ１３と楔５の位置関係が前記事例とは逆となった例を示すものであり、同一 部分には同符号を付してある。FIG. 3 shows another embodiment according to the present invention. This shows an example in which the positional relationship between the throw-away tip 13 and the wedge 5 is opposite to the case described above, and the same parts are designated by the same reference numerals.
【００１４】[0014]
本考案による楔を使用することにより、大きな締め付け力の作用する点をカッ タの中心寄りに移動させることができ、その結果、スローアウェイチップの装着 力を低下させることなく、カッタ本体の塑性変形および歪を抑制することができ る。 By using the wedge according to the present invention, the point where a large tightening force acts can be moved closer to the center of the cutter, and as a result, plastic deformation of the cutter body can be performed without reducing the attachment force of the throw-away tip. And distortion can be suppressed.
【図１】本考案による楔を用いたカッタの一実施例を示
す楔部分の断面図である。FIG. 1 is a sectional view of a wedge portion showing an embodiment of a cutter using a wedge according to the present invention.
【図２】（ａ）前記楔の斜め後方からの斜視図である。 （ｂ）前記楔の斜め前方からの斜視図である。FIG. 2 (a) is a perspective view of the wedge from diagonally rearward. (B) It is a perspective view from the diagonal front of the said wedge.
【図３】本考案による楔を用いたカッタの他の一実施例
を示す楔部分の断面図である。FIG. 3 is a sectional view of a wedge portion showing another embodiment of the cutter using the wedge according to the present invention.
【図４】図１に示す実施例のカッタ全体を示す正面図で
ある。FIG. 4 is a front view showing the entire cutter of the embodiment shown in FIG.
１ カッタ本体 ３ チップ座 ４ 締め付けねじ ５ 楔 ６ 上面 ７ 下面 ８ すり割り １０ 後面 １１ 前面 １２ ヌスミ溝 １３ スローアウェイチップ 1 Cutter main body 3 Tip seat 4 Tightening screw 5 Wedge 6 Upper surface 7 Lower surface 8 Slot 10 Rear surface 11 Front surface 12 Slotted groove 13 Throw-away tip
Claims (1)
有するチップ座３が設けてあって、前記ねじ穴２に螺合
させた締め付けねじ４を旋回させて楔５を沈み込ませる
ことにより、平板状のスローアウェイチップ１３を前記
カッタ本体１に押し付けて装着させる構造のスローアウ
ェイ式カッタに使用するカッタ用の楔において、前記楔
５の上面６と下面７との中間には楔５のねじ穴１４の軸
線に対しほぼ垂直方向にすり割り８があるとともに、楔
５の上面６と前記すり割り８との間は締め付けねじ４の
外径より大きな直径の貫通穴９となっていることを特徴
とするスローアウェイ式カッタ用の楔。1. A tip seat 3 having a screw hole 2 is provided on the outer peripheral side of a cutter body 1, and a tightening screw 4 screwed into the screw hole 2 is swung to sink a wedge 5. As a result, in the cutter wedge used for the throw-away type cutter having a structure in which the flat throw-away tip 13 is pressed against the cutter body 1 to be mounted, a wedge is provided between the upper surface 6 and the lower surface 7 of the wedge 5. 5, there is a slot 8 substantially perpendicular to the axis of the screw hole 14, and between the upper surface 6 of the wedge 5 and the slot 8 is a through hole 9 having a diameter larger than the outer diameter of the tightening screw 4. A wedge for a throw-away type cutter characterized by having.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2087193U JPH0674220U (en) | 1993-03-30 | 1993-03-30 | Wedge for throw-away type cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2087193U JPH0674220U (en) | 1993-03-30 | 1993-03-30 | Wedge for throw-away type cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0674220U true JPH0674220U (en) | 1994-10-21 |
Family
ID=12039239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2087193U Withdrawn JPH0674220U (en) | 1993-03-30 | 1993-03-30 | Wedge for throw-away type cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6327594B1 (en) * | 2017-08-10 | 2018-05-23 | 株式会社タンガロイ | Cutting tools |
-
1993
- 1993-03-30 JP JP2087193U patent/JPH0674220U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6327594B1 (en) * | 2017-08-10 | 2018-05-23 | 株式会社タンガロイ | Cutting tools |
| JP2019030953A (en) * | 2017-08-10 | 2019-02-28 | 株式会社タンガロイ | Cutting tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19970703 |