JPS58217211A - Step cutting type milling cutter - Google Patents

Step cutting type milling cutter

Info

Publication number
JPS58217211A
JPS58217211A JP57097665A JP9766582A JPS58217211A JP S58217211 A JPS58217211 A JP S58217211A JP 57097665 A JP57097665 A JP 57097665A JP 9766582 A JP9766582 A JP 9766582A JP S58217211 A JPS58217211 A JP S58217211A
Authority
JP
Japan
Prior art keywords
cutting
cutter
milling cutter
cutting edge
outer peripheral
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.)
Granted
Application number
JP57097665A
Other languages
Japanese (ja)
Other versions
JPH06281B2 (en
Inventor
Norimitsu Kuraoka
蔵岡 紀満
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP57097665A priority Critical patent/JPH06281B2/en
Publication of JPS58217211A publication Critical patent/JPS58217211A/en
Publication of JPH06281B2 publication Critical patent/JPH06281B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C5/00Milling-cutters
    • B23C5/16Milling-cutters characterised by physical features other than shape
    • B23C5/20Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22Securing arrangements for bits or teeth or cutting inserts
    • B23C5/2204Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
    • B23C5/2208Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts 
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C5/00Milling-cutters
    • B23C5/16Milling-cutters characterised by physical features other than shape
    • B23C5/20Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/202Plate-like cutting inserts with special form
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2200/00Details of milling cutting inserts
    • B23C2200/12Side or flank surfaces
    • B23C2200/125Side or flank surfaces discontinuous
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2200/00Details of milling cutting inserts
    • B23C2200/20Top or side views of the cutting edge
    • B23C2200/205Discontinuous cutting edges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2210/00Details of milling cutters
    • B23C2210/28Arrangement of teeth
    • B23C2210/285Cutting edges arranged at different diameters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2210/00Details of milling cutters
    • B23C2210/28Arrangement of teeth
    • B23C2210/287Cutting edges arranged at different axial positions or having different lengths in the axial direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

PURPOSE:To prevent a processed surface from being stair-shaped by arranging step type cutter cutting blades while only axially shifting them, and providing outer peripheral cutting blades such that the cut amounts of said blades are approximately equal to each other. CONSTITUTION:Respective slow-away tips 2a-2h are attached while shifted by a prescribed angle beta in their turning directions and axially by a prescribed amount Sa but with the same their turning radius, and further outer peripheral cutting blades 3 are attached inclined by a tilt angle alpha against the outer peripheral surface 4. In case of the cutting of any work by making use of this step cutting type milling cutter, the axial step amount Sa and a feed amount per one revolution of the cutter are small together, so that thick chips are discharged with the finished surface plane-shaped.

Description

【発明の詳細な説明】 本発明は、エンドミル、平フライス、側フライ奴 スなどの主として外周切刃により平面を切削することを
目的としたフライスカッターにおいて、高能率重切削が
可能なように構成したステップ切削式フライスカッター
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention is a milling cutter such as an end mill, a flat milling cutter, a side fly cutter, etc. whose purpose is mainly to cut a flat surface using a peripheral cutting edge, and is configured to enable high-efficiency heavy cutting. This invention relates to a step-cutting type milling cutter.

従来のステップ式カッターは、カッターの外周面に配置
された切れ刃の位置を、カッターの回転中心軸方向およ
び半径方向に順次ステツブ、状にずらせたものである。
A conventional step-type cutter has cutting edges arranged on the outer peripheral surface of the cutter that are sequentially shifted in the direction of the central axis of rotation of the cutter and in the radial direction.

このようなステップ式カッターをステップ式でない通常
のカッター(例えば、エンドミル)と比較して見ると、
通常のカッターの場合はi1図に示す切削形状のとおり
、軸方向切削幅をdとし1刃1回転当りの送り量をfと
すると、幅d厚さfの切屑が生成されることになる。
Comparing this kind of step-type cutter with a regular cutter that is not a step-type cutter (for example, an end mill),
In the case of a normal cutter, as shown in the cutting shape shown in Figure i1, if the axial cutting width is d and the feed rate per rotation per blade is f, chips with a width d and a thickness f will be generated.

これに対し、ステップ式カッターの場合は第2図に示す
ように、f′は1回転当りの送り量またはその整数分の
1であり、d/刃数または刃数の整数分の1に分断され
た切屑が生成される。
On the other hand, in the case of a step-type cutter, as shown in Figure 2, f' is the feed amount per revolution or an integer fraction thereof, and is divided into d/number of teeth or an integer fraction of the number of teeth. chips are generated.

上記のように、ステップ式カッターは加工送り量が一定
の場合、(1)切屑の幅が74%さい。(2) f’が
1回転当りの送り量(または、その整数分の1)であり
、しかもl刃尚りの送りであるため、切屑厚さが厚くな
り、比切削抵抗が小さい。(3)幅の広い切屑が出ない
ため、切屑ポケットは小さくてよい。
As mentioned above, when the step type cutter has a constant machining feed rate, (1) the chip width is 74% smaller; (2) Since f' is the feed amount per rotation (or an integer fraction thereof), and the feed is about 1 tooth, the chip thickness is thick and the specific cutting resistance is small. (3) Since wide chips are not generated, the chip pocket can be small.

(4)切屑に同時に関与する切れ刃の数は全刃数の半分
以下であるため切削幅の総和はd/2以下であτ刀 り、かつ、各切れ刃の切削幅は狭く屑厚さが厚いため切
れ味がよい。などの利点がある。
(4) The number of cutting edges that are involved in cutting chips at the same time is less than half of the total number of cutting edges, so the total cutting width is less than d/2, and the cutting width of each cutting edge is narrow and the thickness of the chips is small. Because it is thick, it cuts well. There are advantages such as

ところが、従来から知られているステップ式カッターは
、カッターの回転中心軸方向、半径方向共ステップ状に
切れ刃を配置しているため、平フライス、エンドミル、
側フライスなど主として外周切れ刃による切削作用によ
り最終仕上平面(または曲面)を生成するカッターにお
いては、その仕上面が第3図に示すとおり各切れ刃の軸
方向ステップ量S、lおよび半径方向ステップ量S、に
よる階段状の形状となり、これらのカンタ−の基本性能
である外周切れ刃による平面(または曲面)の生成その
ものが不可能であるという欠点があった。
However, the conventionally known step type cutter has cutting edges arranged in a step shape both in the direction of the rotation center axis of the cutter and in the radial direction.
In a cutter such as a side milling cutter that produces a final finished plane (or curved surface) mainly by the cutting action of the outer peripheral cutting edge, the finished surface has the axial step amount S, l of each cutting edge and the radial step as shown in Fig. 3. This results in a step-like shape due to the amount S, and there is a drawback that it is impossible to generate a plane (or curved surface) by the outer peripheral cutting edge, which is the basic performance of these canters.

本発明は、ステップ切削式の強力重切削が可能な、平フ
ジイス、側フライス、エンドミルなどのり 主として外周切れ刃によ4平面加工を行うフライスカッ
ターを提供することを目的としたものである。
An object of the present invention is to provide a milling cutter capable of step cutting type strong heavy cutting, such as a flat Fuji cutter, a side milling cutter, an end mill, etc., which performs four-plane machining using a peripheral cutting edge as a glue.

本発明は、従来のステップ式カッターζこおいて切れ刃
を軸方向だけをずらして配置し、半径方向にはずらせな
いかわりに外周切れ刃をその切削量がほぼ等しくなるよ
うに設けたものであ0′、切・削幅が狭く切屑厚さの大
きい切屑を排出するステップ式カッターの特徴を生かし
、その欠点である外周切れ刃による加工面が階段状にな
ることを防止できる点に特徴がある。
The present invention is a conventional step-type cutter ζ in which the cutting edges are shifted only in the axial direction, and instead of being shifted in the radial direction, the outer cutting edges are provided so that their cutting amounts are approximately equal. A0', the feature is that it takes advantage of the step type cutter's narrow cutting width and ejects thick chips, and prevents the step-like machining surface caused by the peripheral cutting edge, which is a disadvantage of the step type cutter. be.

以下、本発明を図面に基いて説明する。Hereinafter, the present invention will be explained based on the drawings.

第4図および第5図は、本発明をスローアウェイエンド
ミルに適用した場合の一実施例を示したものであり、カ
ッターボディ1の外周部に8枚のスローアウェイチップ
2at 2b・・・・・・2i1+ zhを取り付けた
状態を示している。各スローアウェイチップ2a+ 2
b・・・・・・2g、 2h は回転方向を一定角度β
ずらして取り付け、回転半径はいずれも同一であるが軸
方向には一定量Saずつずらして配置し、しかも、外周
切れ刃3は各刃共外周面4に対し傾斜角αだけ傾けて取
り付けている。なお、ここで外周切れ刃3の外周面4に
対する傾斜角αは、このカッターの1回転当りの送り量
をfl、切れ刃の円周方向のピッチ角をβ、軸方向のス
テップ量を82とすれば、α≧jan−’ ((f’ 
/S、) X (β/360))を満足するように決定
されなければならず、軸方向のステップ量S2および切
れ刃の円周方向のピッチ角βは、各切れ刃ごとに変え不
等分割としてもよい。
4 and 5 show an embodiment in which the present invention is applied to an indexable end mill, in which eight indexable inserts 2at 2b are provided on the outer periphery of the cutter body 1. - Shows the state with 2i1+ zh installed. Each throw-away tip 2a+ 2
b...2g, 2h are rotation directions set at a constant angle β
The rotation radius is the same, but they are shifted by a certain amount Sa in the axial direction, and each outer peripheral cutting edge 3 is installed at an angle of inclination α with respect to the outer peripheral surface 4. . Incidentally, here, the inclination angle α of the outer peripheral cutting edge 3 with respect to the outer peripheral surface 4 is expressed as follows: the feed amount per rotation of this cutter is fl, the pitch angle of the cutting edge in the circumferential direction is β, and the step amount in the axial direction is 82. Then, α≧jan-'((f'
/S,) It may be divided.

二のように1例えばエンドミルなスローアウェイ方式と
した場合は、各スローアウェイチップにより切削する切
削幅はその切れ刃長さのV2以下となり、正面フライス
による切削と同・様に、1回転当りの送りが大きい強力
重切削が可能となる。
For example, when using an end mill indexable method, the cutting width cut by each indexable insert is less than V2 of its cutting edge length, and the cutting width per rotation is similar to cutting with a face milling cutter. Powerful heavy cutting with large feed is possible.

第6図ないし第8図は、ろう付平フライスに適用した場
合の他の実施例を示したものである。各切れ刃5□5b
・・・・・・sk、51+、ii8図に示すようにのこ
刃状の形状とし、軸方向に一定量S、ずつずらしている
。ここで、外周面4に対する各切れ刃ののこ刃状の傾斜
角αは、上述のスローアウェイエンドミルの場合と同様
に決定し、軸方向ステップ量S8および円周方向ピッチ
角βは不等分割としてもよい。
6 to 8 show other embodiments in which the present invention is applied to a brazed flat milling cutter. Each cutting edge 5□5b
...sk, 51+, ii As shown in Figure 8, it has a sawtooth shape and is shifted by a certain amount S in the axial direction. Here, the sawtooth inclination angle α of each cutting edge with respect to the outer circumferential surface 4 is determined in the same manner as in the case of the indexable end mill described above, and the axial step amount S8 and the circumferential pitch angle β are unequally divided. You can also use it as

このようなろう付(またはソリッド)式カッターの場合
、比較的安価に製作でjるという効果がある。
Such a brazed (or solid) type cutter has the advantage of being relatively inexpensive to manufacture.

なお、主切れ刃はらせん状に順次ねじって配置すること
も可能である。
In addition, it is also possible to arrange the main cutting edges in a spiral manner by twisting them one after another.

以上説明したように構成したヌテツン切削式フライスカ
ッターにより切削した場合、軸方向のステップ量をSa
t カッターの1回転当りの送り量をf′とすれば、第
2図で説明した従来のステップ式カッターと同様、第9
図に示すように、幅S1.厚さf′の幅が狭く厚さの厚
い切屑が排出され、かつ、このステップ切削式フジイス
カッターの外周切れ刃による仕上面は、ステップ式カッ
ターの仕上面が第3図で説明したようにj階段状になる
のに対し、第10図に示すように平面状となる。
When cutting with the nutetun cutting type milling cutter configured as explained above, the step amount in the axial direction is Sa
t If the feed amount per rotation of the cutter is f', then the 9th
As shown in the figure, the width S1. Thick chips with a narrow thickness f' are discharged, and the finished surface by the outer cutting edge of this step-cutting type Fuji cutter is similar to that of the step-type cutter as explained in Fig. 3. j It has a step-like shape, but it has a planar shape as shown in FIG.

第11図ないし第13図は、本発明をスローアウェイエ
ンドミルに適用した場合の他の実施例を示したものであ
り、第11図はこのエンドミルに装着するスローアウェ
イチップ11を示す。このスローアウェイチップ11は
、基本形が一定の厚さtを有する正三角形であり、中央
部に取付用の穴認を設けている。切れ刃13は正三角形
の外周に設け、その長さlは、エンドミルの軸方向ステ
ップ量S8(第12図参照)に等しいかまたは若干長く
し、三角形の各辺の切れ刃13以外の部分は逃げ14と
し、切れ刃13より正三角形の中心方向に逃がしている
11 to 13 show another embodiment in which the present invention is applied to a throw-away end mill, and FIG. 11 shows a throw-away tip 11 to be attached to this end mill. The throw-away tip 11 has a basic shape of an equilateral triangle with a constant thickness t, and has a hole for mounting in the center. The cutting edge 13 is provided on the outer periphery of the equilateral triangle, and its length l is equal to or slightly longer than the axial step amount S8 of the end mill (see Fig. 12), and the parts other than the cutting edge 13 on each side of the triangle are A relief 14 is provided, and relief is provided from the cutting edge 13 toward the center of the equilateral triangle.

第12図および第13図は、この特殊形状のスローアウ
ェイチップ11を装着したステップ切削式スローアウェ
イエンドミルを示したものであり、カッターホティ15
の外周部に8枚の上記スローアウェイチップ1111,
11b・・・・・・11g、vhv−11h  を装着
した状態を示している。各スローアウェイテップ11a
、 llb・・・・・・11g、 llbは回転方向に
一定角度βずらして取り付け、回転半径はいずれも同一
であるが軸方向には一定量S8ずつずらして配置してい
る。また、切れ刃13は外周面に対して平行に設置する
。ここで、スローアウェイチップの逃げの量δは、この
カッターの1回転当りの送り量をfl、切れ刃の円周方
向ピッチ角をβとすればδ≧f/ xβ/360の関係
を満足しなければならず、軸方向のステップ量Sllお
よび切れ刃の円周方向ピッチ角βは各切れ刃ごとに変え
、不等分割としてもよい。
12 and 13 show a step cutting type indexable end mill equipped with this specially shaped indexable tip 11, and the cutter hottie 15 is shown in FIG.
The eight throw-away tips 1111 are arranged on the outer periphery of the
11b...11g and VHV-11h are shown attached. Each throw away step 11a
, llb...11g, llb are mounted shifted by a fixed angle β in the rotational direction, and although they all have the same rotation radius, they are shifted by a fixed amount S8 in the axial direction. Moreover, the cutting edge 13 is installed parallel to the outer peripheral surface. Here, the amount of relief δ of the indexable insert satisfies the relationship δ≧f/xβ/360, where fl is the feed amount per rotation of this cutter and β is the pitch angle in the circumferential direction of the cutting edge. The axial step amount Sll and the pitch angle β in the circumferential direction of the cutting edge may be changed for each cutting edge and may be divided into unequal divisions.

このようにスローアウェイ方式とした場・合は、各スロ
ーアウェイチップにより切削する切削幅はスローアウェ
イチップの1辺の長さのη以下となり、正面フライスに
よる切削と同様に1回転当りの送り量が大きい強力重切
削が可能となる。
In this case, when using the indexable method, the cutting width cut by each indexable insert is less than η, the length of one side of the indexable insert, and the feed rate per rotation is the same as when cutting with a face milling cutter. Enables powerful heavy cutting with large force.

第14図ないし第16図は、ろう付乎フライスに適用し
た場合のさらに他の実施例を示したものである。12枚
の切れ刃16□16b・・・・・・16に、 16.は
第16図に示すように、次に切削する切れ刃(例えは1
6あの場合は16b、 16bの場合は16c)との軸
方向ステップ量S8と等しいかまたは若干長い量だけ残
し、他の部分は第11図ないし第13図のステップ切削
式スローアウェイエンドミルの実施例で説明したように
逃がしている。ここでこの逃げの量δは、上記スローア
ウェイエンドミルの場合と同じ条件を満足するようにし
、軸方向ステップ量S、および円周方向ピッチ角βは不
等分割としてもよい。
FIGS. 14 to 16 show still another embodiment in which the present invention is applied to a brazed milling cutter. 12 cutting edges 16□16b...16, 16. As shown in Fig. 16, the cutting edge to be cut next (for example, 1
6 In that case, 16b, in the case of 16b, 16c), leave only an amount that is equal to or slightly longer than the axial step amount S8, and the other parts are the embodiments of the step cutting type indexable end mill shown in Figs. 11 to 13. As explained in , it is released. Here, the amount of relief δ is made to satisfy the same conditions as in the case of the indexable end mill, and the axial step amount S and the circumferential pitch angle β may be divided into unequal divisions.

このようなろう付(またはソリッド)弐カッターの場合
は、比較的安価に製作できるという効果がある。
In the case of such a brazed (or solid) two cutter, there is an advantage that it can be manufactured at a relatively low cost.

以上の第11図ないし第16図のように構成したステッ
プ切削式7ライスカツターにより切削しガ だ場合、軸算向のステップ量をSatカッターの1回転
当りの送り量をf′とすれば、第9図で説明したステッ
プ切削式フライスカッターと同様、第17図にjすよう
に、幅Sat厚さf′の幅が狭く厚さの厚い切屑が排出
され、かつ、この場合の加工面は完全な平面となり、仕
上加工に適用できる。
When cutting is performed using the step-cutting type 7 rice cutter configured as shown in Figs. Similar to the step-cutting type milling cutter explained in Fig. 9, as shown in Fig. 17 j, the width Sat and the thickness f' are narrow and thick chips are discharged, and the machined surface in this case is completely cut. It becomes a flat surface and can be applied to finishing processing.

本発明によれば、以下に列挙する如き効果がある。According to the present invention, there are effects as listed below.

(1)外周切れ刃により、平面(または曲面)の加工が
できる。
(1) The peripheral cutting edge allows machining of flat (or curved) surfaces.

(2)切屑の幅が小さい。(2) The width of chips is small.

(3)切屑厚さが厚く比切削抵抗が小さい。(3) The chip thickness is thick and the specific cutting resistance is small.

(4)幅の広い切屑が排出されないため、切屑ポケット
は小さくてよい。
(4) Since wide chips are not discharged, the chip pocket can be small.

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

第1図は通常のカッターによる切削形状の断面図、第2
図はステップ式カッターによる切削形状の断面図、第3
図はステップ式カッターの外周切れ刃による加工仕上面
の斜視図、第4図は本発明をスローアウェイエンドミル
に適用した場合の正面図、第5図はその側面図、第6図
は本発明の他の実施例であるろう何事7ライスの正面図
、第7図はその側面図、第8図はその外周切れ刃の詳細
図、第9図は第4〜8図のステップ切削式フライ革 スカッターによる切削形状の断面図、210図は同じく
その外周切れ刃による加工仕上“面の斜視図、il1図
は本発明をスローアウェイエンドミルに適用した場合に
使用するスローアウェイテップの他の実施例を示す斜視
図、第12図は第11図のスローアウェイチップを使用
したスローアウェイエンドミルの正面図、第13図はそ
の側面図、事例 14図は本発明のさらに他の実施櫃であるろう何事フラ
イスの正面図、第15図はその側面図、第16図はその
外周切れ刃の詳細図、第17図は第12〜16図のステ
ップ切削式フライスカッターによる切削形状の断面図で
ある。  41・・・・・・カッターボディ、2・・・
・・・スローアウェイチップ、3・・・・・・外周切れ
刃、4・・・・・・カッターの外周面、5・・・・・・
ろう付の切れ刃、11・・・・・・スローアウェイチッ
プ、ν・・・・・・取付用の穴、13・・・・・・切れ
刃、14・・・・・・逃げ、15・・・・・・カッター
ボディ、16・・・・・・ろう何事フライスの切れ刃、
α・・・・・・外周切れ刃の外周面に対する傾き角、β
・・・・・・各切れ刃の円周方向ピッチ角、Sa・・・
・・・各切れ刃の軸方向ステップ量、δ・・・・・・逃
げの量、f、f’・・・・・・1刃1回転当りの送IJ
量 代理人 弁理士  ?11 83 20.r’、((。 1、       □1
Figure 1 is a cross-sectional view of the shape cut by a normal cutter, Figure 2
The figure is a cross-sectional view of the shape cut by the step cutter.
The figure is a perspective view of the machined finished surface by the outer peripheral cutting edge of the step type cutter, Figure 4 is a front view when the present invention is applied to a throw-away end mill, Figure 5 is a side view thereof, and Figure 6 is a view of the finished surface of the present invention. 7 is a side view of another embodiment of the Ro-Kaji 7 rice, FIG. 8 is a detailed view of its outer cutting edge, and FIG. 9 is a step-cutting type fly leather strip of FIGS. Fig. 210 is a cross-sectional view of the shape cut by the cutter, Fig. 210 is a perspective view of the finished surface by the outer cutting edge, and Fig. 11 shows another embodiment of the indexable tip used when the present invention is applied to an indexable end mill. FIG. 12 is a front view of the indexable end mill using the indexable tip shown in FIG. 11, FIG. 13 is a side view thereof, and FIG. 15 is a side view thereof, FIG. 16 is a detailed view of its outer peripheral cutting edge, and FIG. 17 is a sectional view of the cut shape by the step milling cutter of FIGS. 12 to 16. 41. ...Cutter body, 2...
...Throwaway tip, 3...Outer peripheral cutting edge, 4...Outer peripheral surface of cutter, 5...
Brazing cutting edge, 11... Throwaway tip, ν... Mounting hole, 13... Cutting edge, 14... Relief, 15. ... Cutter body, 16 ... Wax milling blade,
α・・・Inclination angle of the outer peripheral cutting edge with respect to the outer peripheral surface, β
・・・・・・Pitch angle in the circumferential direction of each cutting edge, Sa...
...Axis step amount of each cutting edge, δ...Amount of relief, f, f'...Feed IJ per rotation per blade
Quantitative agent Patent attorney? 11 83 20. r', ((. 1, □1

Claims (1)

【特許請求の範囲】 1、 円筒面外周に設けた主切れ刃により仕上面を得る
フライスカッターにおいて、上記主切れ刃を軸方向にス
テップ状にずらして配置し、かつ各切れ刃の切削量がほ
ぼ等しくなるように主切れ刃を外周面に設けたことを特
徴とするステップ切削式フライスカッターa′ 2、上記主切れ刃なのこ刃状に一体形成した特許請求の
範囲第1項記載のステップ切削式フライスカッター。 3 のこ刃状に一体に形成した上記主切れ刃をカッター
ボディに装着した特許請求の範囲第1項記載のステップ
切削式7ライスカツター。 上 重切削式72イスカッター。 5、上記主切れ刃の円周方向の配置を不等にした特許請
求の範囲第1項ないし第3項のいずれかに記載のステッ
プ切削式フライスカッター。 6、上記主切れ刃をらせん状に配置した特許請求の範囲
第1項ないし第5項のいずれかに記載のステップ切削式
フライスカッター。 7、上記主切れ刃を外周面に対して平行に設け、切削幅
部分だけを残し他の部分を逃がした特許請求の範囲第1
項ないし第6項のいずれかに記載のステップ切削式フラ
イスカッター。
[Claims] 1. A milling cutter that obtains a finished surface using main cutting edges provided on the outer periphery of a cylindrical surface, in which the main cutting edges are arranged stepwise in the axial direction, and the cutting amount of each cutting edge is A step-cutting type milling cutter a'2 characterized in that main cutting edges are provided on the outer circumferential surface so that the main cutting edges are substantially equal; Cutting type milling cutter. 3. The step-cutting type 7-rice cutter according to claim 1, wherein the main cutting edge integrally formed in the shape of a saw blade is attached to a cutter body. Top heavy cutting type 72 chair cutter. 5. The step milling cutter according to any one of claims 1 to 3, wherein the main cutting edges are arranged unequal in the circumferential direction. 6. The step cutting type milling cutter according to any one of claims 1 to 5, wherein the main cutting edge is arranged in a spiral shape. 7. Claim 1 in which the main cutting edge is provided parallel to the outer circumferential surface, leaving only the cutting width portion and leaving the other portions free.
The step-cutting milling cutter according to any one of items 6 to 6.
JP57097665A 1982-06-09 1982-06-09 Step cutting milling cutter Expired - Lifetime JPH06281B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57097665A JPH06281B2 (en) 1982-06-09 1982-06-09 Step cutting milling cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57097665A JPH06281B2 (en) 1982-06-09 1982-06-09 Step cutting milling cutter

Publications (2)

Publication Number Publication Date
JPS58217211A true JPS58217211A (en) 1983-12-17
JPH06281B2 JPH06281B2 (en) 1994-01-05

Family

ID=14198339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57097665A Expired - Lifetime JPH06281B2 (en) 1982-06-09 1982-06-09 Step cutting milling cutter

Country Status (1)

Country Link
JP (1) JPH06281B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6384810A (en) * 1987-08-24 1988-04-15 Hitachi Ltd Throwaway milling cutter
JP2006142462A (en) * 2004-11-24 2006-06-08 Kanefusa Corp Rotary cutting tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5125634A (en) * 1974-08-29 1976-03-02 Toyota Motor Co Ltd Lpg kikannohaikiosenboshisochi
JPS5230751A (en) * 1975-09-05 1977-03-08 Japan Steel Works Ltd Method and device to eliminate cylinder displacement owing to thermal expansion for vertical type extruder
JPS5338951U (en) * 1976-09-08 1978-04-05

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5125634A (en) * 1974-08-29 1976-03-02 Toyota Motor Co Ltd Lpg kikannohaikiosenboshisochi
JPS5230751A (en) * 1975-09-05 1977-03-08 Japan Steel Works Ltd Method and device to eliminate cylinder displacement owing to thermal expansion for vertical type extruder
JPS5338951U (en) * 1976-09-08 1978-04-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6384810A (en) * 1987-08-24 1988-04-15 Hitachi Ltd Throwaway milling cutter
JP2006142462A (en) * 2004-11-24 2006-06-08 Kanefusa Corp Rotary cutting tool

Also Published As

Publication number Publication date
JPH06281B2 (en) 1994-01-05

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