JPS62181311U - - Google Patents
Info
- Publication number
- JPS62181311U JPS62181311U JP7027986U JP7027986U JPS62181311U JP S62181311 U JPS62181311 U JP S62181311U JP 7027986 U JP7027986 U JP 7027986U JP 7027986 U JP7027986 U JP 7027986U JP S62181311 U JPS62181311 U JP S62181311U
- Authority
- JP
- Japan
- Prior art keywords
- end mill
- ball end
- mill according
- utility
- model registration
- 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
Links
- 239000002184 metal Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 229910052582 BN Inorganic materials 0.000 claims 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims 3
- 150000001247 metal acetylides Chemical class 0.000 claims 1
- 150000004767 nitrides Chemical class 0.000 claims 1
- 230000000737 periodic effect Effects 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
Landscapes
- Milling Processes (AREA)
Description
第１図は、この考案のボールエンドミルの一例
を示す側面図、第２図はその拡大正面図、第３図
は第１図のエンドミルを９０°回転させたときの
部分拡大側面図、第４図は第１図のＡ―Ａ線に沿
つた断面図、第５図はシヤンクに接合する前の複
合体の一例を示す斜視図である。
１……シヤンク、２……チツプ挿入溝、３……
切刃チツプ、４……板状硬質焼結体、５……板状
の金属又は焼結炭化物、６……すくい面、７……
ねじれ刃。
Fig. 1 is a side view showing an example of the ball end mill of this invention, Fig. 2 is an enlarged front view thereof, Fig. 3 is a partially enlarged side view of the end mill shown in Fig. 1 when rotated 90 degrees, and Fig. 4 The figure is a sectional view taken along the line AA in FIG. 1, and FIG. 5 is a perspective view showing an example of the composite before being joined to the shank. 1...Shank, 2...Chip insertion groove, 3...
Cutting blade tip, 4...Plate-shaped hard sintered body, 5...Plate-shaped metal or sintered carbide, 6... Rake face, 7...
Twisted blade.
Claims (1)
プ挿入溝を設け、その溝内に切刃チツプを固着し
たボールエンドミルにおいて、上記切刃チツプが
板状硬質焼結体の両面に板状の金属又は焼結炭化
物を備え、それ等の金属又は焼結炭化物はすくい
面となる部分では除去されている３層構造の複合
体によつて形成され、かつ、そのチツプの硬質焼
結体から成る切刃は、ねじれ角を有したねじれ刃
になつていることを特徴とするボールエンドミル
。 (2) 上記ねじれ刃のねじれ角が５°以上３５°
以下であることを特徴とする実用新案登録請求の
範囲第(1)項記載のボールエンドミル。 (3) 上記ねじれ刃の半径方向すくい角が−１５
°〜＋１５°の範囲にあることを特徴とする実用
新案登録請求の範囲第(1)項又は第(2)項記載のボ
ールエンドミル。 (4) 上記ねじれ刃の内端が回転中心部にあるこ
とを特徴とする実用新案登録請求の範囲第(1)項
乃至第(3)項のいずれかに記載のボールエンドミ
ル。 (5) 上記ねじれ刃のシヤンク軸方向刃長が、先
端ボール部の直径をＤとしたときＤ／２以上ある
ことを特徴とする実用新案登録請求の範囲第(1)
項乃至第(4)項のいずれかに記載のボールエンド
ミル。 (6) 上記ねじれ刃が、周方向に１８０°位置を
変えて２枚存在することを特徴とする実用新案登
録請求の範囲第(1)項乃至第(5)項のいずれかに記
載のボールエンドミル。 (7) 上記２枚のねじれ刃が略半円形の１個の切
刃チツプに点対称に形成されていることを特徴と
する実用新案登録請求の範囲第(6)項記載のボー
ルエンドミル。 (8) 上記硬質焼結体が、高圧相型窒化硼素焼結
体である実用新案登録請求の範囲第(1)項乃至第(
7)項のいずれかに記載のボールエンドミル。 (9) 上記高圧相型窒化硼素焼結体が、立方晶型
窒化硼素を２０〜８０容量％含有し、残部が周期
率表４ａ又は５ａ族の炭化物、窒化物、炭窒化物
のいずれかとＡｌもしくはＳｉより成ることを特
徴とする実用新案登録請求の範囲第(8)項記載の
ボールエンドミル。 (10) 上記焼結炭化物がＷＣ―Ｃ０であることを
特徴とする実用新案登録請求の範囲第(1)項乃至
第(9)項のいずれかに記載のボールエンドミル。 〓(11)１１〓 上記板状の金属がＭ０，Ｗもしく
はＴａであることを特徴とする実用新案登録請求
の範囲(1)項乃至第(9)項のいずれかに記載のボー
ルエンドミル。 〓(12)１２〓 上記の切刃チツプが、硬質焼結体
の厚さをｌ１、板状の金属又は焼結炭化物の厚さ
をｌ２としたとき、ｌ２／ｌ１の値を０．３以下
に定めたものであることを特徴とする実用新案登
録請求の範囲第(1)項乃至第〓(11)１１〓項のい
ずれかに記載のボールエンドミル。[Scope of Claim for Utility Model Registration] (1) A ball end mill in which a chip insertion groove parallel to the shank axis is provided at the tip of the shank, and a cutting blade tip is fixed in the groove, in which the cutting blade tip is plate-shaped and hard sintered. It is formed of a three-layered composite body with plate-shaped metal or sintered carbide on both sides of the body, and the metal or sintered carbide is removed from the part that becomes the rake face, and the chip A ball end mill characterized in that a cutting blade made of a hard sintered body is a twisted blade having a helix angle. (2) The helix angle of the above twisted blade is 5° or more and 35°
A ball end mill according to claim (1) of the utility model registration, which is characterized by the following: (3) The radial rake angle of the above twisted blade is -15
A ball end mill according to claim (1) or (2) of the utility model registration claim, characterized in that the angle is in the range of 15° to +15°. (4) The ball end mill according to any one of claims (1) to (3), wherein the inner end of the twisted blade is located at the center of rotation. (5) Utility model registration claim No. (1) characterized in that the length of the twisted blade in the shank axial direction is not less than D/2, where D is the diameter of the tip ball portion.
The ball end mill according to any one of Items to Items (4). (6) The ball according to any one of claims (1) to (5) of the claims for registration of a utility model, characterized in that there are two twisted blades spaced apart by 180 degrees in the circumferential direction. end mill. (7) The ball end mill according to claim (6), wherein the two twisted blades are formed point-symmetrically on one approximately semicircular cutting blade tip. (8) Claims (1) to (1) above (8) The above-mentioned hard sintered body is a high-pressure phase type boron nitride sintered body.
The ball end mill described in any of item 7). (9) The high-pressure phase type boron nitride sintered body contains 20 to 80% by volume of cubic boron nitride, and the balance is made of carbides, nitrides, carbonitrides of Groups 4a or 5a of the periodic table, and Al. The ball end mill according to claim (8) of the utility model registration, characterized in that the ball end mill is made of silicon or Si. (10) The ball end mill according to any one of claims (1) to (9), wherein the sintered carbide is WC-C 0 . (11) 11 The ball end mill according to any one of claims (1) to (9), wherein the plate-shaped metal is M 0 , W, or Ta. 〓(12)１２〓 For the above cutting tip, when the thickness of the hard sintered body is l 1 and the thickness of the plate metal or sintered carbide is l 2 , the value of l 2 /l 1 is 0.3 or less, the ball end mill according to any one of claims (1) to (11)11 of the scope of utility model registration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7027986U JPH0321856Y2 (en) | 1986-05-09 | 1986-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7027986U JPH0321856Y2 (en) | 1986-05-09 | 1986-05-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62181311U true JPS62181311U (en) | 1987-11-17 |
| JPH0321856Y2 JPH0321856Y2 (en) | 1991-05-13 |
Family
ID=30911774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7027986U Expired JPH0321856Y2 (en) | 1986-05-09 | 1986-05-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0321856Y2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01164024U (en) * | 1988-04-30 | 1989-11-15 | ||
| JPH02114418U (en) * | 1989-02-27 | 1990-09-13 | ||
| JPH0560717U (en) * | 1992-01-29 | 1993-08-10 | 現代自動車株式会社 | Cutting tools for machine tools |
| JP2002046013A (en) * | 2000-08-03 | 2002-02-12 | Dijet Ind Co Ltd | Throwaway tip and ball end mill |
| JP2013063502A (en) * | 2011-08-30 | 2013-04-11 | Hitachi Tool Engineering Ltd | Hard sintered body ball end mill |
-
1986
- 1986-05-09 JP JP7027986U patent/JPH0321856Y2/ja not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01164024U (en) * | 1988-04-30 | 1989-11-15 | ||
| JPH02114418U (en) * | 1989-02-27 | 1990-09-13 | ||
| JPH0560717U (en) * | 1992-01-29 | 1993-08-10 | 現代自動車株式会社 | Cutting tools for machine tools |
| JP2002046013A (en) * | 2000-08-03 | 2002-02-12 | Dijet Ind Co Ltd | Throwaway tip and ball end mill |
| JP2013063502A (en) * | 2011-08-30 | 2013-04-11 | Hitachi Tool Engineering Ltd | Hard sintered body ball end mill |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0321856Y2 (en) | 1991-05-13 |
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