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JP2001087928A - Tip mounting structure of end mill with its double tip faces serviceable - Google Patents

Tip mounting structure of end mill with its double tip faces serviceable

Info

Publication number
JP2001087928A
JP2001087928A JP26808599A JP26808599A JP2001087928A JP 2001087928 A JP2001087928 A JP 2001087928A JP 26808599 A JP26808599 A JP 26808599A JP 26808599 A JP26808599 A JP 26808599A JP 2001087928 A JP2001087928 A JP 2001087928A
Authority
JP
Japan
Prior art keywords
tip
chip
holder
pocket
faces
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
Application number
JP26808599A
Other languages
Japanese (ja)
Inventor
Tadashi Takano
正 高野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Priority to JP26808599A priority Critical patent/JP2001087928A/en
Publication of JP2001087928A publication Critical patent/JP2001087928A/en
Pending legal-status Critical Current

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  • Milling Processes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost end mill by making serviceable its double tip faces. SOLUTION: A pocket 3 is formed at the periphery of a holder 2, and a tip 4 is installed in the pocket 3 and attached to the holder 2. The two surfaces of the tip 4 have machining faces 6A and 6B provided with at least one blade part 5, and the tip has a peripheral surface 7 approximately perpendicular to the machining faces 6A and 6B, and the holder 2 is equipped with a mounting part 8 left open to the side with the pocket 3 and for mounting the tip 4 in such a way that its obverse and reverse surfaces can be inverted and the diametrically inner sides of the machining faces 6A and 6B are preceding in rotation to their diametrically outer sides.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、フライスカッタの
チップ両面使用可能なチップ取り付け構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip mounting structure capable of using both sides of a chip of a milling cutter.

【0002】[0002]

【従来の技術】従来のフライスカッタは、チップの切削
面がホルダの回転中心を通る線上に位置し、逃げ角を形
成するために、チップの外周面は傾斜面となっていて、
チップは片面のみ使用されるようになっている。
2. Description of the Related Art In a conventional milling cutter, a cutting surface of a chip is located on a line passing through the center of rotation of a holder, and an outer peripheral surface of the chip is inclined to form a clearance angle.
The chip is designed to be used on one side only.

【0003】[0003]

【発明が解決しようとする課題】前記従来技術では、チ
ップの外周面に逃げ角用の傾斜面を形成しているため、
チップは片面しか使用できず、それを配置するホルダの
ポケット部も大きく形成しなくてはならなく、コスト高
になっている。本発明は、このような従来技術の問題点
を解決できるようにしたフライスカッタのチップ両面使
用可能なチップ取り付け構造を提供することを目的とす
る。本発明は、チップの両面に切削面を形成し、切削面
に対して外周面を略直角に形成し、このチップを切削面
の径内側を径外側より回転先行姿勢に取り付けることに
より、チップ両面を使用可能にし、フライスカッタを安
価に製作できるようにしたフライスカッタのチップ両面
使用可能なチップ取り付け構造を提供することを目的と
する。
In the above prior art, the inclined surface for the clearance angle is formed on the outer peripheral surface of the chip.
The chip can be used only on one side, and the pocket portion of the holder for arranging the chip must be formed large, which increases the cost. SUMMARY OF THE INVENTION An object of the present invention is to provide a chip mounting structure capable of using both sides of a chip of a milling cutter, which can solve such a problem of the related art. The present invention provides a cutting surface on both sides of a chip, forming an outer peripheral surface at a substantially right angle to the cutting surface, and mounting the chip in a rotation leading position with a radial inside of the cutting surface from a radial outside of the cutting surface. It is an object of the present invention to provide a chip mounting structure that enables both sides of a chip of a milling cutter to be manufactured at a low cost.

【0004】[0004]

【課題を解決するための手段】本発明における課題解決
のための具体的手段は、ホルダ2の外周部にポケット部
3を形成し、このポケット部3内にチップ4を配置して
ホルダ2に取り付けたフライスカッタにおいて、前記チ
ップ4は、表裏両面に少なくとも1つの刃部5を形成し
た切削面6A、6Bを有し、この切削面6A、6Bに対
して略直角な外周面7を有しており、前記ホルダ2に
は、ポケット部3側に開放されていてチップ4を表裏反
転取り付け自在でありかつ使用する切削面6A、6Bの
径内側を径外側より回転先行姿勢に取り付ける取り付け
部8を形成していることである。
A concrete means for solving the problem in the present invention is to form a pocket portion 3 on the outer peripheral portion of the holder 2 and dispose a chip 4 in the pocket portion 3 to attach the chip 4 to the holder 2. In the attached milling cutter, the tip 4 has cutting surfaces 6A and 6B formed with at least one blade portion 5 on both front and back surfaces, and has an outer peripheral surface 7 substantially perpendicular to the cutting surfaces 6A and 6B. The holder 2 has a mounting portion 8 which is open to the pocket portion 3 side so that the tip 4 can be turned upside down and the inside of the cutting surface 6A, 6B to be used is attached to the rotation leading position from the outside of the diameter. Is formed.

【0005】これによって、チップ4の表裏両面が使用
可能になり、フライスカッタを安価に製作できるように
なる。
As a result, both the front and back surfaces of the chip 4 can be used, and the milling cutter can be manufactured at low cost.

【0006】[0006]

【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図1〜4において、1は例えば、
縦軸フライス盤に使用されるフライスカッタであり、ホ
ルダ(フライス本体)2に1又は2以上の個数のチップ
(切削工具)4を取り付けて構成されている。チップ4
を複数個取り付ける場合は、ホルダ2の外周部に周方向
等間隔に配置する。ホルダ2の外周部には、チップ4を
配置するためのポケット部3が形成されており、このポ
ケット部3の奥部にはチップ4を安定的に取り付けるた
めの取り付け部8が形成されている。
Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1-4, 1 is, for example,
This is a milling cutter used for a vertical axis milling machine, and is configured by attaching one or more chips (cutting tools) 4 to a holder (milling body) 2. Chip 4
When a plurality of are mounted, they are arranged on the outer periphery of the holder 2 at equal intervals in the circumferential direction. A pocket portion 3 for disposing the chip 4 is formed on the outer peripheral portion of the holder 2, and a mounting portion 8 for stably mounting the chip 4 is formed on a deep portion of the pocket portion 3. .

【0007】チップ4は超硬合金、合金工具鋼、サーメ
ット合金、セラミック(スロー・アウェイチップ)、そ
の他の金属又は非金属で形成されており、ここでは三角
形のスロー・アウェイチップを図示しているが、四角形
又は菱形のものでもよい。前記チップ4は、表裏両面が
切削面6A、6Bとなっており、各切削面6A、6Bに
は少なくとも1つの刃部5を形成している。三角チップ
の場合、3辺にそれぞれ刃部5A、5B、5Cが形成さ
れており、各刃部5に沿ってラジアルすくい角Gを形成
するための凹部11が形成されている。
The tip 4 is made of cemented carbide, alloy tool steel, cermet alloy, ceramic (throw-away tip), or other metal or non-metal. Here, a triangular throw-away tip is shown. May be square or rhombic. The tip 4 has cutting surfaces 6A and 6B on both front and back surfaces, and at least one blade portion 5 is formed on each cutting surface 6A and 6B. In the case of a triangular tip, blade portions 5A, 5B, and 5C are formed on three sides, respectively, and a concave portion 11 for forming a radial rake angle G is formed along each blade portion 5.

【0008】チップ4は外周面7が切削面6A、6Bに
対して略直角になっており、切削面6A、6Bのどちら
を使用する場合でも、使用する切削面6に対して外周面
7は略直角に位置している。前記ホルダ2の取り付け部
8は、ポケット部3側に開放された凹部であり、チップ
4を挿入してボルト等の止め具12で固定している。三
角チップを使用する場合、前記取り付け部8は三角形の
1辺と表面とが開放された凹部となり、挿入したチップ
4は1本の止め具12で止めるだけで回り止め状態で取
り付けられる。
The outer peripheral surface 7 of the chip 4 is substantially perpendicular to the cutting surfaces 6A and 6B. Regardless of which of the cutting surfaces 6A and 6B is used, the outer peripheral surface 7 is It is located at a substantially right angle. The mounting portion 8 of the holder 2 is a concave portion opened to the pocket portion 3 side. The tip 4 is inserted and fixed with a stopper 12 such as a bolt. In the case of using a triangular tip, the mounting portion 8 is a concave portion in which one side and the surface of the triangle are open, and the inserted tip 4 is mounted in a detented state only by stopping with the single stopper 12.

【0009】取り付け部8に対してチップ4は表裏反転
取り付け自在であり、使用する切削面6A(又は6B)
の径内側を径外側より回転先行姿勢に取り付け、使用す
る切削面6Aの先端を使用しない切削面6Bの先端より
もホルダ2軸心方向に突出させている。このような取り
付け部8に取り付けられたチップ4は、凹部11でラジ
アルすくい角Gを形成し、中心線Sに対して傾斜角度H
を付けることによりラジアルすきま角Jを形成し、切削
面6A(又は6B)をホルダ2の軸心Pに対して傾斜角
度Kを付けて外周面にアキシアル逃げ角Lを形成するこ
とになり、また、必要なすくい角、逃げ角、すきま角等
を備えた姿勢にチップ4を取り付け得るように、前記取
り付け部8を形成している。
The chip 4 can be attached to the mounting portion 8 upside down, so that the cutting surface 6A (or 6B) to be used can be used.
Of the cutting surface 6A to be used is mounted in a rotation leading posture from the radially outer side, and the tip of the cutting surface 6A to be used is projected more in the axial direction of the holder 2 than the tip of the cutting surface 6B not to be used. The chip 4 attached to such an attachment portion 8 forms a radial rake angle G with the concave portion 11 and an inclination angle H with respect to the center line S.
, A radial clearance angle J is formed, the cutting surface 6A (or 6B) is inclined at an angle K with respect to the axis P of the holder 2, and an axial clearance angle L is formed on the outer peripheral surface. The mounting portion 8 is formed so that the chip 4 can be mounted in a posture having a required rake angle, clearance angle, clearance angle, and the like.

【0010】2枚のチップ4を取り付けるホルダ2の場
合、ポケット部3の面及び取り付け部8の奥面は、図1
に示すように、互いに略平行になる。前記フライスカッ
タ1においては、チップ4の表裏両面が反転して使用で
き、刃部5の数を倍増でき、切削面6A、6Bに対して
外周面7が略直角であり製作が簡単かつ安価になり、ホ
ルダ2の中心線Sに対して傾斜角度を有するので、ポケ
ット部3を小さくでき、ホルダ2の直径が小さくともチ
ップ4の取り付けが可能になり、チップ4の取り替え又
は反転が容易にでき、旋盤で使用するチップをフライス
盤で使用することもできるようになる。
In the case of the holder 2 to which two chips 4 are mounted, the surface of the pocket portion 3 and the back surface of the mounting portion 8 are shown in FIG.
As shown in FIG. In the milling cutter 1, the front and back surfaces of the tip 4 can be used in an inverted manner, the number of the blade portions 5 can be doubled, and the outer peripheral surface 7 is substantially perpendicular to the cutting surfaces 6A and 6B, so that the production is simple and inexpensive. In other words, since the holder 3 has an inclination angle with respect to the center line S, the pocket portion 3 can be made smaller, and the chip 4 can be attached even if the diameter of the holder 2 is small, so that the chip 4 can be easily replaced or inverted. In addition, a chip used in a lathe can be used in a milling machine.

【0011】[0011]

【発明の効果】以上詳述した本発明によれば、チップ4
の表裏両面を反転して使用することができ、ホルダ2及
びチップ4の製作が簡単かつ安価にできる。
According to the present invention described in detail above, the chip 4
Can be used by reversing the front and back surfaces, and the manufacture of the holder 2 and the chip 4 can be simplified and inexpensive.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の形態を示す平面図である。FIG. 1 is a plan view showing an embodiment of the present invention.

【図2】同正面図である。FIG. 2 is a front view of the same.

【図3】同側面図である。FIG. 3 is a side view of the same.

【図4】同斜視図である。FIG. 4 is a perspective view of the same.

【符号の説明】[Explanation of symbols]

1 フライスカッタ 2 ホルダ 3 ポケット部 4 チップ 5 刃部 6 切削面 7 外周面 8 取り付け部 DESCRIPTION OF SYMBOLS 1 Milling cutter 2 Holder 3 Pocket part 4 Tip 5 Blade part 6 Cutting surface 7 Outer peripheral surface 8 Mounting part

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 ホルダ(2)の外周部にポケット部
(3)を形成し、このポケット部(3)内にチップ
(4)を配置してホルダ(2)に取り付けたフライスカ
ッタにおいて、 前記チップ(4)は、表裏両面に少なくとも1つの刃部
(5)を形成した切削面(6A、6B)を有し、この切
削面(6A、6B)に対して略直角な外周面7を有して
おり、 前記ホルダ(2)には、ポケット部(3)側に開放され
ていてチップ(4)を表裏反転取り付け自在でありかつ
使用する切削面(6A、6B)の径内側を径外側より回
転先行姿勢に取り付ける取り付け部(8)を形成してい
ることを特徴とするフライスカッタのチップ両面使用可
能なチップ取り付け構造。
1. A milling cutter having a pocket (3) formed in an outer peripheral portion of a holder (2), a chip (4) arranged in the pocket (3), and attached to the holder (2). The tip (4) has a cutting surface (6A, 6B) in which at least one blade portion (5) is formed on both front and back surfaces, and has an outer peripheral surface 7 substantially perpendicular to the cutting surface (6A, 6B). The holder (2) is open to the pocket (3) side so that the tip (4) can be turned upside down freely and the inside diameter of the cutting surface (6A, 6B) to be used is outside the diameter. A chip mounting structure capable of using both sides of a chip of a milling cutter, wherein a mounting portion (8) for mounting in a rotation leading posture is formed.
JP26808599A 1999-09-22 1999-09-22 Tip mounting structure of end mill with its double tip faces serviceable Pending JP2001087928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26808599A JP2001087928A (en) 1999-09-22 1999-09-22 Tip mounting structure of end mill with its double tip faces serviceable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26808599A JP2001087928A (en) 1999-09-22 1999-09-22 Tip mounting structure of end mill with its double tip faces serviceable

Publications (1)

Publication Number Publication Date
JP2001087928A true JP2001087928A (en) 2001-04-03

Family

ID=17453687

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26808599A Pending JP2001087928A (en) 1999-09-22 1999-09-22 Tip mounting structure of end mill with its double tip faces serviceable

Country Status (1)

Country Link
JP (1) JP2001087928A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008543579A (en) * 2005-06-13 2008-12-04 ケンナメタル インコーポレイテッド Spiral cutting insert with multiple cutting edges
CN102470454A (en) * 2009-08-31 2012-05-23 京瓷株式会社 Cutting tool and method of manufacturing cut workpiece using same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008543579A (en) * 2005-06-13 2008-12-04 ケンナメタル インコーポレイテッド Spiral cutting insert with multiple cutting edges
CN102470454A (en) * 2009-08-31 2012-05-23 京瓷株式会社 Cutting tool and method of manufacturing cut workpiece using same
US20120128440A1 (en) * 2009-08-31 2012-05-24 Kyocera Corporation Cutting tool and method of manufacturing machined product using the same
US8851810B2 (en) * 2009-08-31 2014-10-07 Kyocera Corporation Cutting tool and method of manufacturing machined product using the same

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