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JP3575640B2 - Face milling - Google Patents
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JP3575640B2 - Face milling - Google Patents

Face milling Download PDF

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Publication number
JP3575640B2
JP3575640B2 JP19420695A JP19420695A JP3575640B2 JP 3575640 B2 JP3575640 B2 JP 3575640B2 JP 19420695 A JP19420695 A JP 19420695A JP 19420695 A JP19420695 A JP 19420695A JP 3575640 B2 JP3575640 B2 JP 3575640B2
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JP
Japan
Prior art keywords
supporter
degrees
face
throw
angle
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 - Lifetime
Application number
JP19420695A
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Japanese (ja)
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JPH0919818A (en
Inventor
康博 木内
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.)
Moldino Tool Engineering Ltd
Original Assignee
Hitachi Tool Engineering Ltd
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 Hitachi Tool Engineering Ltd filed Critical Hitachi Tool Engineering Ltd
Priority to JP19420695A priority Critical patent/JP3575640B2/en
Publication of JPH0919818A publication Critical patent/JPH0919818A/en
Application granted granted Critical
Publication of JP3575640B2 publication Critical patent/JP3575640B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【0001】
【産業上の利用分野】
本願発明は、MC・フライス盤等において平面切削に用いられる正面フライスの改良に関するもので、特にサポータを用いてスローアウェイチップを装着する正面フライスに関する。
【0002】
【従来の技術】
MC・フライス盤等にて被削材を平面加工する時、スローアウェイチップをサポータを介して正面フライス本体に着脱自在に固着して行う正面フライスが一般に実用化されている。
特に、サポータに着目すると、図1に示す、実公平3−18094号公報、に示されるような、サポータを軸方向に略平行に、袋溝状に設けた例がある。
また、正面フライスのコーナー角とサポータとの関係では、図1のようにサポータは軸方向に略並行で、コーナー角を45度前後としている例もあるが、サポータの傾ける角度とコーナー角とは、概ね並行に設けた例が多い。(例として、特開平5−16012号公報 図7)その理由として、図2に示すように、並行に設けた場合、加工を行いやすく、切削による負荷を受ける形をとり、またねじ等による固定をサポータと垂直な方向で行うため固定が確実で、回転の影響が少なく、剛性の高い工具を提供することができる。
【0003】
【発明が解決しようとする課題】
しかしながら、図1に示す例ではサポータは軸方向に略並行に設けられているため、正面フライス本体の深くまでサポータが入り込み、刃数の少ない場合には十分な肉厚を持たせることができるが、刃数を多くした場合や、軽量化を計ろうとした場合には対応できないとう課題があった。
また、図2に示すような例では、スローアウェイチップの切刃位置よりも、サポータ又は正面フライス本体の位置がより外側に位置するようになるため、段差のある被削材等では適用できず、またMC等では刃径よりも大きな径となるためATC等で取り扱いにくくなる等の課題があった。
【0004】
【本発明の目的】
本願発明は、以上のような課題を解消させ、より軽量化を計った正面フライスを提供し、さらに切刃の精度、特に装着時の精度を向上させるとともに、高精度を維持できる正面フライスを提供することを目的とする。
【0005】
【課題を解決するための手段】
上記目的を達成させるため、本願発明は、正面フライス本体の外周部に凹部が形成され、前記凹部内には平板状のスローアウェイチップ、前記スローアウェイチップを支持するサポータ及び楔が装着されてなる正面フライスにおいて、前記凹部内にはスローアウェイチップを支持するサポータ用溝と楔辺用溝からなり、前記サポータ用溝の角度を10〜30度で設け、前記サポータの外周部を軸方向に略並行に設けたことを特徴とする正面フライス正面フライである。また、その角度はコーナー角が30度の場合には、10〜25度、コーナー角が45度・60度の場合には、10〜30度が好ましい。
【0006】
【作用】
本願発明によれば、サポータ用溝はスローアウェイチップを正面フライス本体に装着したときに形成するコーナー角よりも小さな角度で設けることにより、軸方向から外径に開く形となるため、正面フライス本体の肉厚を減少させることなくサポータ用溝を形成できるため剛性を高めることができる。よって、サポータ用溝の上部を軽量化でき、更に刃数等もより多く設けることが可能となる。
また、その角度はコーナー角が30度の場合には、10〜25度としたのは、10度未満では軸方向から外径に開く形とするのに不十分であり、また25度を越えるとコーナー角に近ずくため、サポータの幅が十分とれなくなるため、10〜25度とした。コーナー角45度・60度の場合、10〜30度としたのも同様な理由による。
次に、前記サポータの外周部は軸方向に略並行に設けることにより刃径が最も大となるようにし、サポータ等が刃径よりも外側にでないようにする。
以下、本願発明の1実施例を図面を参照して説明する。
【0007】
【実施例】
図3は、本願発明の実施例として正面フライスの断面図であり、図4は図3のサポータを示す。図3〜4において、正面フライス本体1は正面外周凹部に円周方向所定の間隔をおいてチップポケット部に連続して設けられ、サポータ2を介してスローアウェイチップ3を、クランプネジを有するクサビによって、スローアウェイチップ3を着脱自在に固定した切刃部を複数有している正面フライスである。スローアウェイチップ3を支持するサポータ2は、正面フライス本体の軸方向に対してα度傾けられた状態でねじにより正面フライス本体1に固着されている。コーナー角は45度の正面フライスを示している。
【0008】
まず、各々の部品を装着した状態において、スローアウェイチップの取付精度を確認するため、その正面振れを測定した。振れ測定にはスローアウェイチップを所定トルクで固定したときの正面振れで行った。
尚、比較のため従来技術で説明した正面フライスでも同様に測定した。
その結果、楔の締め付けトルクを20、60、100kgとしたとき、
本願発明の正面フライス、
サポータ角度 10度では、振れが、0、3、5μmであり、
サポータ角度 15度では、振れが、0、2、4μmであり、
サポータ角度 25度では、振れが、0、2、4μmであり、
従来技術で説明した正面フライスでは、振れが、0、7、17μmであり、締め付けトルクの変化に対して振れ幅がが小さいことがわかる。その理由として、正面振れの原因となるサポータ上部4と正面フライス本体1との接触部分が、本願発明では軸方向に対し外径側に行くに従い狭まっているため、締め付ける方向・トルクの変動に対し、確実な固定を行える形状となっているが、従来例ではサポータ上部4が軸方向に垂直であるため、接触部分が長く、締め付ける方向・トルクの変動に対し変形を起こしやすく、またその加工精度が十分でないときには大きな振れを生じることがわかる。
【0009】
尚、本願発明は以上の実施例に限定されるものではなく、本発明の思想の範囲内で種々の正面フライスに適用することができ、又コーナー角、刃数等は、正面フライスの大きさや被削材の材質等に応じて適宜選択できるものである。
【0010】
【発明の効果】
本願発明は、正面フライスにおけるスローアウェイチップを固定するサポータの取付を改善することにより、チップ装着時の安定性・精度を増すことができ、より軽量化を計った正面フライスが提供できた。
【図面の簡単な説明】
【図1】図1は、従来例に係る正面フライスの断面図を示す。
【図2】図2は、従来例に係る正面フライスの断面図を示す。
【図3】図3は、本願発明に係わる正面フライスの断面図を示す。
【図4】図4は、図3に正面フライスに使用するサポータの正面図を示す。
【符号の説明】
1 正面フライス本体
2 スローアウェイチップ
3 サポータ
4 サポータ上部
α サポータ角度
[0001]
[Industrial applications]
The present invention relates to an improvement of a face mill used for plane cutting in an MC / milling machine or the like, and particularly to a face mill to which a throw-away tip is mounted using a supporter.
[0002]
[Prior art]
2. Description of the Related Art When a work material is plane-machined by an MC / milling machine or the like, a face mill which detachably attaches a throw-away tip to a face mill body via a supporter and is detachable is generally put into practical use.
Paying particular attention to the supporter, there is an example in which the supporter is provided in a bag groove shape substantially parallel to the axial direction as shown in Japanese Utility Model Publication No. 3-18094 shown in FIG.
As for the relationship between the corner angle of the face milling machine and the supporter, there is an example in which the supporter is substantially parallel to the axial direction and the corner angle is about 45 degrees as shown in FIG. In many cases, they are provided substantially in parallel. (For example, Japanese Patent Application Laid-Open No. H5-116012, FIG. 7) As shown in FIG. Is performed in a direction perpendicular to the supporter, so that the fixing is secure, the influence of rotation is small, and a tool having high rigidity can be provided.
[0003]
[Problems to be solved by the invention]
However, in the example shown in FIG. 1, since the supporter is provided substantially in parallel in the axial direction, the supporter enters deep into the face milling body, and when the number of blades is small, the supporter can have a sufficient thickness. However, there has been a problem that it is not possible to cope with an increase in the number of blades or an attempt to reduce the weight.
In addition, in the example as shown in FIG. 2, since the position of the supporter or the face milling body is positioned more outside than the cutting edge position of the throw-away insert, it cannot be applied to a work material having a step. In addition, MC and the like have a problem that the diameter becomes larger than the blade diameter, making it difficult to handle with an ATC or the like.
[0004]
[Object of the present invention]
The present invention solves the above problems and provides a face milling machine which is lighter in weight, and further provides a face milling machine which can maintain the high accuracy while improving the accuracy of the cutting edge, particularly the accuracy at the time of mounting. The purpose is to do.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a concave portion is formed in an outer peripheral portion of a face milling body, and a flat throw-away tip, a supporter for supporting the throw-away tip, and a wedge are mounted in the concave portion. In the face milling machine, the recess includes a supporter groove for supporting the throw-away tip and a wedge side groove, and the supporter groove is provided at an angle of 10 to 30 degrees, and the outer peripheral portion of the supporter is substantially axially formed. A face mill is a face fly provided in parallel. The angle is preferably 10 to 25 degrees when the corner angle is 30 degrees, and 10 to 30 degrees when the corner angles are 45 and 60 degrees.
[0006]
[Action]
According to the invention of the present application, since the supporter groove is provided at an angle smaller than the corner angle formed when the throw-away tip is mounted on the front milling body, the supporter groove is opened from the axial direction to the outer diameter, so that the front milling body is Since the supporter grooves can be formed without reducing the thickness of the supporter, the rigidity can be increased. Therefore, the weight of the upper part of the supporter groove can be reduced, and the number of blades and the like can be increased.
When the corner angle is 30 degrees, the angle is set to 10 to 25 degrees. When the angle is less than 10 degrees, it is insufficient to form a shape that opens from the axial direction to the outer diameter, and exceeds 25 degrees. The angle was set to 10 to 25 degrees because the width of the supporter could not be sufficiently obtained because the angle approached the corner angle. In the case of a corner angle of 45 degrees and 60 degrees, it is set to 10 to 30 degrees for the same reason.
Next, the outer peripheral portion of the supporter is provided substantially in parallel with the axial direction so that the blade diameter is maximized, and the supporter and the like are not located outside the blade diameter.
Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
[0007]
【Example】
FIG. 3 is a sectional view of a face mill as an embodiment of the present invention, and FIG. 4 shows the supporter of FIG. 3 and 4, the front milling body 1 is continuously provided in the chip pocket portion at a predetermined circumferential interval in the front outer peripheral concave portion, and the indexable insert 3 is inserted through the supporter 2 into a wedge having a clamp screw. This is a face mill having a plurality of cutting blade portions to which the throw-away tip 3 is detachably fixed. The supporter 2 supporting the throw-away tip 3 is fixed to the front milling body 1 by screws while being inclined by α degrees with respect to the axial direction of the front milling body. The corner angle indicates a 45-degree face mill.
[0008]
First, in a state where each component was mounted, the front deflection was measured to confirm the mounting accuracy of the throw-away tip. The run-out was measured by the front run-out when the throw-away tip was fixed at a predetermined torque.
For comparison, the same measurement was performed on a face mill described in the related art.
As a result, when the tightening torque of the wedge is 20, 60, and 100 kg,
Face milling of the present invention,
At a supporter angle of 10 degrees, the deflection is 0, 3, 5 μm,
At a supporter angle of 15 degrees, the run-out is 0, 2, 4 μm,
At a supporter angle of 25 degrees, the deflection is 0, 2, 4 μm,
In the face milling machine described in the related art, the run-out is 0, 7, and 17 μm, and it can be seen that the run-out width is small with respect to the change in the tightening torque. The reason is that the contact portion between the upper part 4 of the supporter and the front milling body 1 which causes the front runout becomes narrower toward the outer diameter side with respect to the axial direction in the present invention. In the conventional example, since the upper part 4 of the supporter is perpendicular to the axial direction, the contact portion is long, and it is easy to be deformed by fluctuations in the tightening direction and torque. It can be seen that when the value is not sufficient, a large swing occurs.
[0009]
Note that the present invention is not limited to the above embodiments, and can be applied to various face mills within the scope of the present invention. It can be appropriately selected according to the material of the work material and the like.
[0010]
【The invention's effect】
According to the present invention, by improving the attachment of the supporter for fixing the throw-away tip in the face mill, the stability and accuracy at the time of tip attachment can be increased, and a face mill having a lighter weight can be provided.
[Brief description of the drawings]
FIG. 1 is a sectional view of a face mill according to a conventional example.
FIG. 2 is a sectional view of a face mill according to a conventional example.
FIG. 3 shows a cross-sectional view of a face mill according to the present invention.
FIG. 4 shows a front view of the supporter used for the face mill in FIG.
[Explanation of symbols]
Reference Signs List 1 face milling body 2 throw-away tip 3 supporter 4 supporter upper α supporter angle

Claims (1)

正面フライス本体の外周部に凹部が形成され、前記凹部内には平板状のスローアウェイチップ、前記スローアウェイチップを支持するサポータ及び楔が装着されてなる正面フライスにおいて、前記凹部内にはスローアウェイチップを支持するサポータ用溝と楔辺用溝からなり、前記サポータ用溝の角度を10〜30度で設け、前記サポータの外周部を軸方向に略並行に設けたことを特徴とする正面フライス。A concave portion is formed in the outer peripheral portion of the face milling body, and a flat-shaped throw-away tip, a supporter for supporting the throw-away tip, and a wedge are mounted in the concave portion. A face mill comprising a supporter groove for supporting a chip and a wedge side groove, wherein the supporter groove is provided at an angle of 10 to 30 degrees, and an outer peripheral portion of the supporter is provided substantially in parallel in an axial direction. .
JP19420695A 1995-07-06 1995-07-06 Face milling Expired - Lifetime JP3575640B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19420695A JP3575640B2 (en) 1995-07-06 1995-07-06 Face milling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19420695A JP3575640B2 (en) 1995-07-06 1995-07-06 Face milling

Publications (2)

Publication Number Publication Date
JPH0919818A JPH0919818A (en) 1997-01-21
JP3575640B2 true JP3575640B2 (en) 2004-10-13

Family

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Family Applications (1)

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JP19420695A Expired - Lifetime JP3575640B2 (en) 1995-07-06 1995-07-06 Face milling

Country Status (1)

Country Link
JP (1) JP3575640B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020043197A (en) * 2002-03-16 2002-06-08 김정주 Insert tip liner

Also Published As

Publication number Publication date
JPH0919818A (en) 1997-01-21

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