JPH0513452Y2 - - Google Patents
Info
- Publication number
- JPH0513452Y2 JPH0513452Y2 JP1987054654U JP5465487U JPH0513452Y2 JP H0513452 Y2 JPH0513452 Y2 JP H0513452Y2 JP 1987054654 U JP1987054654 U JP 1987054654U JP 5465487 U JP5465487 U JP 5465487U JP H0513452 Y2 JPH0513452 Y2 JP H0513452Y2
- Authority
- JP
- Japan
- Prior art keywords
- tapered
- cutting
- groove
- taper
- end mill
- 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
Links
- 238000005520 cutting process Methods 0.000 claims description 36
- 238000003754 machining Methods 0.000 claims description 16
- 238000005498 polishing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009760 electrical discharge machining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Milling Processes (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、樹脂製品、アルミニウムダイキヤス
ト製品等のリブ、キヤビテイ部のテーパ部分、勾
配部分を成型する金型のテーパ状断面溝、勾配断
面壁を切削加工するテーパエンドミルに関するも
のである。[Detailed description of the invention] [Field of industrial application] This invention is applicable to tapered cross-sectional grooves and sloped cross-sections of molds for molding ribs, tapered parts of cavities, and sloped parts of resin products, aluminum die-cast products, etc. This relates to a taper end mill for cutting walls.
一般に樹脂、アルミニウムダイキヤスト用金型
のリブ成形部分用テーパ状断面溝等を加工する場
合、放電加工又は切削加工にて行なわれることが
広く知られている。
Generally, when machining a tapered cross-sectional groove for a rib molding part of a mold for resin or aluminum die casting, it is widely known that electrical discharge machining or cutting is performed.
放電加工による場合は予め、設定リブ形状、第
８図に対して、第９図に示す相対形状の電極を造
形し、放電加工されるが、溝内部は放電により面
粗度が悪く、注入硬化度の製品を型より取り出す
際離れにくいので勾配面１を磨き加工している。 In the case of electrical discharge machining, an electrode with a relative shape shown in Fig. 9 is formed in advance with respect to the set rib shape shown in Fig. 8, and electrical discharge machining is performed, but the inside of the groove has poor surface roughness due to electrical discharge and is injection hardened. The sloped surface 1 is polished so that it does not easily separate when the product is removed from the mold.
磨き加工には、人手作業による方法、又は、例
えば特開昭58−109215号公報に記載された如く第
１４図、第１５図のような仕上工具による手段が
とられている。 The polishing process is performed manually or by using a finishing tool as shown in FIGS. 14 and 15, as described in, for example, Japanese Patent Laid-Open No. 109215/1983.
切削加工による場合は設定リブ形状第８図の勾
配部３を除いた短形断面溝部２をまず、一般的ス
トレートエンドミルにて切削加工後、次に勾配部
３を第１０図、第１１図及び第１２図、第１３図
に示すテーパエンドミルによつて切削するように
している。 In the case of machining, first cut the rectangular cross-sectional groove part 2 excluding the slope part 3 of the set rib shape in Fig. 8 using a general straight end mill, and then cut the slope part 3 by cutting the slope part 3 in Figs. Cutting is performed using a taper end mill shown in FIGS. 12 and 13.
しかしながら、上記放電加工によるリブ加工
は、電極を造形加工する工程、放電加工工程、磨
き加工工程と多くの工程があり、各々の工程に加
工設備が必要であり、加工能率や加工設備費など
の面で問題がある。又上記切削加工によるリブ加
工方法は、一般的リブ溝断面形状では溝幅４に対
する溝深さ５の比率が大きく（一般的にこの溝幅
４に対する溝深さの比率は５倍以上である。）一
度にリブ断面形状全体を切削することは、エンド
ミルの突出し長さが長くなり、エンドミル剛性上
不可能である。よつて予め勾配部３を除いた短形
断面溝部２を一般的ストレートエンドミルにて、
溝上部６より溝底部７までを多段階に分けて、溝
長手方向に切削加工し、更に勾配部３をテーパエ
ンドミル第１０図、第１１図及び第１２図、第１
３図で切削加工しているため、設備は同一で加工
できるが、工具費や加工能率などに問題がある。
However, the rib machining by electric discharge machining described above involves many processes such as electrode shaping process, electric discharge machining process, and polishing process, and machining equipment is required for each process, resulting in problems such as machining efficiency and machining equipment cost. There is a problem in terms of In addition, in the above-mentioned rib processing method by cutting, in a general rib groove cross-sectional shape, the ratio of groove depth 5 to groove width 4 is large (generally, the ratio of groove depth to groove width 4 is 5 times or more). ) It is impossible to cut the entire rib cross-sectional shape at once because the protrusion length of the end mill becomes long, and the rigidity of the end mill increases. Therefore, the rectangular cross-section groove part 2 with the slope part 3 removed in advance is cut using a general straight end mill.
The section from the groove top 6 to the groove bottom 7 is machined in multiple steps in the longitudinal direction of the groove, and the slope section 3 is cut using a taper end mill as shown in Figs.
Since cutting is performed as shown in Figure 3, the same equipment can be used for processing, but there are problems with tool costs and processing efficiency.
本考案の目的は、上述従来技術に基づくリブ加
工能率、設備費及び工具費の問題点を解決すべき
技術的課題として、放電加工することなく、
切削加工において予め短形断面溝部を加工する工
程を必要とせず、１つの加工工具で、切削加工
と磨き加工を同時に且つ短時間に加工できるよう
にして金型製造産業における加工技術利用分野に
益する優れたリブ溝加工用テーパエンドミルを提
供するものである。 The purpose of the present invention is to solve the problems of rib machining efficiency, equipment cost, and tool cost based on the above-mentioned conventional technology, without using electric discharge machining.
It is beneficial to the field of processing technology application in the mold manufacturing industry by making it possible to perform cutting and polishing simultaneously and in a short time with one processing tool, without requiring the process of processing a rectangular cross-sectional groove in advance. The present invention provides an excellent taper end mill for machining rib grooves.
上述目的に沿うこの考案は前述問題点を解決す
るために、工具テーパ部の軸直角断面を正多角形
とし、正多角形各辺によつてなす工具軸線上の斜
面を工具軸線上にねじれた正多角形断面ねじれテ
ーパ状とし、且つ先細先端部のみに切削可能な切
刃とすべくすくい面を設けることにより、溝上部
より溝底部まで多段階に分けて溝長手方向に切削
加工する際、先細先端部切刃以上の溝深さ時に達
した場合先端部の切削加工と、正多角形ねじれ部
の磨き加工が同時に同一工具でなされるようにし
た技術手段を講じたものである。
In order to solve the above-mentioned problems, this invention aims to solve the above-mentioned problems by making the axis-perpendicular cross section of the tool taper part a regular polygon, and twisting the slope on the tool axis formed by each side of the regular polygon onto the tool axis. By making it a regular polygonal cross section with a twisted taper shape, and by providing a rake face to be a cutting edge that can cut only at the tapered tip, when cutting in the longitudinal direction of the groove in multiple stages from the groove top to the groove bottom, This technical means is such that when the groove depth reaches a depth equal to or greater than the cutting edge of the tapered tip, cutting of the tip and polishing of the regular polygonal twisted portion are simultaneously performed using the same tool.
以下、本考案の実施例を図面に基づいて詳細に
説明する。
Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第１図、第２図は本考案の一実施例である軸直
角断面が正六角形を呈するテーパエンドミルであ
り、第３図〜第７図に他の実施例を示す。尚、同
一態様部分については同一符号を付して説明す
る。第１図〜第６図において１１はシヤンクであ
つて、図示しない回転切削機械主軸の先端にチヤ
ツクを介して着脱自在に取り付けられて軸心まわ
りに矢印で示す方向に回転させられる。シヤンク
１１の他端側にテーパ部１２を有し、テーパ部は
先細先端部１３からシヤンク側に向かつて徐々に
太くなるように形成されている。テーパ部軸直角
断面は正多角形、例えば正六角形（第１図、第２
図）正三角形（第３図、第４図）及び正四角形
（第５図、第６図）をしており、且つ、正多角形
の各辺１４によつて工具軸線上の斜面１５はテー
パ部において、先細先端部１３からシヤンク側に
向かつて右回転方向にテーパスパイラル状にねじ
れた形態をして、且つ、その稜１６は、テーパ部
１２の先細先端部１３の外接円とシヤンク側テー
パ終了部１７の外接円を継ぐテーパ筒面上にある
ように形成されている。 FIGS. 1 and 2 show a taper end mill having a regular hexagonal cross section perpendicular to the axis, which is an embodiment of the present invention, and FIGS. 3 to 7 show other embodiments. It should be noted that portions having the same features will be described using the same reference numerals. In FIGS. 1 to 6, a shank 11 is detachably attached to the tip of a main shaft of a rotary cutting machine (not shown) via a chuck, and is rotated around the axis in the direction shown by the arrow. The shank 11 has a tapered portion 12 on the other end side, and the taper portion is formed to gradually become thicker from a tapered tip portion 13 toward the shank side. The cross section perpendicular to the axis of the taper part is a regular polygon, for example, a regular hexagon (Figs. 1 and 2).
Figure) It has an equilateral triangle (Figures 3 and 4) and a regular quadrilateral (Figures 5 and 6), and the slope 15 on the tool axis is tapered by each side 14 of the regular polygon. In the part, the tapered tip part 13 is twisted in a tapered spiral shape in the clockwise direction from the tapered tip part 13 toward the shank side, and the ridge 16 is connected to the circumcircle of the tapered tip part 13 of the tapered part 12 and the shank side taper. It is formed so as to be on a tapered cylindrical surface that joins the circumscribed circle of the end portion 17.
先細先端部側にすくい面１８が設けられ、該す
くい面１８と先細テーパ部との外周交差部に側面
切削用の切刃１９が形成されている。尚、切刃長
さは剛性の点から先細先端径程度にするのが望ま
しい。すくい面１８は軸線に対して0°〜10°のす
くい角を有している。すくい面１８の先細先端部
との交差部に底面切削用の底刃２０、その先細端
面部に底刃逃げ面２１があり、底刃逃げ面２１は
軸直角先細端面に対して5°〜8°の逃げ角を有して
いる。 A rake face 18 is provided on the tapered tip side, and a cutting edge 19 for side cutting is formed at the intersection of the rake face 18 and the tapered part on the outer periphery. In addition, from the viewpoint of rigidity, it is desirable that the length of the cutting edge be approximately equal to the diameter of the tapered tip. The rake face 18 has a rake angle of 0° to 10° with respect to the axis. A bottom cutting edge 20 for bottom cutting is provided at the intersection with the tapered tip of the rake face 18, and a bottom cutting relief surface 21 is provided at the tapered end surface. It has a relief angle of °.
以上のように構成されたリブ溝加工用テーパエ
ンドミルにおいて、図示しない回転切削機械主軸
の先端にチヤツクを介して取り付け回転させる。 In the taper end mill for machining ribs and grooves configured as described above, the end mill is attached via a chuck to the tip of the main shaft of a rotary cutting machine (not shown) and rotated.
そして、被加工物の上面より切刃１９の長さ以
内を限度として一回の切込みを与え、軸直角方向
に移動させられることにより溝切削加工を行な
う、既に加工した溝底部より更に切込みを与えて
移動させることにより、切刃１９を有する部分は
切削作用を行なうが、切刃稜よりシヤンク側の正
多角形テーパスパイラル状の稜１６は、既加工溝
両壁を押し広げ、磨き加工をしたと同様の良好な
勾配面１を形成する。これを繰り返し段階的に必
要溝深さまで加工することにより、切削加工と磨
き加工を一種類の工具で同時に、能率的に行われ
るものである。 Then, a single cut is made within the length of the cutting edge 19 from the top surface of the workpiece, and the groove is cut by being moved in the direction perpendicular to the axis. By moving the cutting edge 19, the part with the cutting edge 19 performs a cutting action, but the regular polygonal tapered spiral ridge 16 on the shank side from the cutting edge ridge expands both walls of the already-finished groove and removes the polished surface. A good slope surface 1 similar to the above is formed. By repeating this process step by step to reach the required groove depth, cutting and polishing can be performed simultaneously and efficiently using one type of tool.
又、テーパ部１２の正多角形の稜１６は、既加
工溝両壁を押し広げる際、スパイラル状にねじれ
ていることによりスムーズな接触を行ない、振動
を押え、良好な勾配面１を形成するものである。
尚、この考案の実施態様は、上述実施例に限るも
のでないことは勿論であり、例えば、適宜設計溝
断面形状に応じて第７図に示すような溝底部アー
ル状溝切削用等の底刃形状が使用可能である。 In addition, when the regular polygonal ridges 16 of the tapered portion 12 spread apart both walls of the pre-processed groove, they are twisted in a spiral shape to make smooth contact, suppress vibrations, and form a good sloped surface 1. It is something.
It goes without saying that the embodiment of this invention is not limited to the above-mentioned embodiments, and for example, a bottom blade for cutting a rounded groove at the bottom of the groove as shown in FIG. Shapes are available.
本考案によれば、溝切削をしながら同時に磨き
加工が出来、多種類の工具を必要とせずに、一工
程作業で良好な離型性のよいリブ用溝を作業時間
を短縮して加工できる優れた効果が奏される。
According to the present invention, it is possible to perform polishing while cutting grooves at the same time, and it is possible to cut grooves for ribs with good mold release properties in one process, reducing work time and without requiring multiple types of tools. Excellent effects are produced.
又、テーパ部は正多角形スパイラル状のねじれ
形状をしていることにより、一般的テーパエンド
ミルと比べ剛性が強く、折損事故が少なく、安定
性があるため、経済的効果もある。 In addition, since the taper part has a regular polygonal spiral twisted shape, it has higher rigidity, fewer breakage accidents, and stability compared to general tapered end mills, so it is also economical.
更に正多角形稜はスパイラル状にねじれている
ことにより、溝勾配面の磨き加工が振動なくスム
ーズにできるため、良好な離型性のよいリブ用溝
が出来る効果もある。 Furthermore, since the edges of the regular polygon are spirally twisted, polishing of the sloped groove surface can be performed smoothly without vibration, which has the effect of producing rib grooves with good mold release properties.
加えて、同一工具で溝切削加工と磨き加工が同
時に出来るために製造コストを著しく低減させる
利点もある。 In addition, since the same tool can perform groove cutting and polishing at the same time, there is the advantage of significantly reducing manufacturing costs.
第１図は本考案の実施例を示す正面図、第２図
はその底面図、第３図は他の実施例の正面図、第
４図はその底面図、第５図は更に他の実施例の正
面図、第６図はその底面図、第７図は他の実施例
の正面図であり、第８図は本考案を説明するため
の基本的なリブ用溝を示す斜視部分図、第９図は
第８図の溝を放電加工する際の電極斜視部分図、
第１０図は従来のテーパエンドミルの正面図、第
１１図は第１０図の底面図、第１２図は他従来の
テーパエンドミルの正面図、第１３図は第１２図
の底面図、第１４図は従来の仕上工具の正面図、
第１５図は第１４図の底面図である。
１……勾配面、２……短形断面溝部、３……勾
配部、４……溝幅、５……溝深さ、６……溝上
部、７……溝底部、９……切刃、１１……シヤン
ク、１２……テーパ部、１３……先細先端部、１
４……正多角形の各辺、１５……斜面、１６……
稜、１７……テーパ終了部、１８……すくい面、
２０……底刃、２１……底刃逃げ面。
Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a bottom view thereof, Fig. 3 is a front view of another embodiment, Fig. 4 is a bottom view thereof, and Fig. 5 is a further embodiment. FIG. 6 is a front view of the example, FIG. 6 is a bottom view thereof, FIG. 7 is a front view of another embodiment, and FIG. 8 is a perspective partial view showing basic rib grooves for explaining the present invention. Figure 9 is a partial perspective view of the electrode when performing electrical discharge machining of the groove in Figure 8;
Fig. 10 is a front view of a conventional taper end mill, Fig. 11 is a bottom view of Fig. 10, Fig. 12 is a front view of another conventional taper end mill, Fig. 13 is a bottom view of Fig. 12, Fig. 14 is a front view of a conventional finishing tool,
FIG. 15 is a bottom view of FIG. 14. 1... Gradient surface, 2... Rectangular cross section groove, 3... Gradient part, 4... Groove width, 5... Groove depth, 6... Groove top, 7... Groove bottom, 9... Cutting edge , 11...Shank, 12...Tapered part, 13...Tapered tip part, 1
4...Each side of a regular polygon, 15...Slope, 16...
Ridge, 17... Taper end, 18... Rake face,
20...Bottom blade, 21...Bottom blade flank.
Claims (1)
溝加工用テーパエンドミルにおいて、軸状のシ
ヤンクの他端部が先細テーパ状に一体成形さ
れ、該先細テーパ部の軸直角断面は正多角形
で、且つ、正多角形の各辺によつてなす軸線上
の各斜面が、先細先端部からシヤンク側に向か
つて、スパイラル状にねじれを形成し、且つ、
該正多角形の角によつてなす各稜は、正多角形
外接仮想テーパ筒面上に形成されており、更に
前記先細テーパ部の端部に切削用すくい面が形
成され、該すくい面と先細テーパ部との外周交
差部に側面切削用の切刃が形成され、且つ、該
すくい面と先細先端部との交差部に底面切削用
に底刃が形成されたことを特徴とするテーパ溝
加工用多角形テーパエンドミル。 (2) 実用新案登録請求の範囲第１項記載のテーパ
溝加工用多角形テーパエンドミルにおいて、前
記側面切削用の切刃の長さが先細先端部外接円
径と同程度であることを特徴とするテーパ溝加
工用多角形テーパエンドミル。[Claims for Utility Model Registration] (1) In a taper end mill for machining taper grooves that is attached to the end of the main shaft of a rotary cutting machine, the other end of the shaft-shaped shank is integrally molded into a tapered shape, and the shaft of the tapered part The right-angled cross section is a regular polygon, and each slope on the axis formed by each side of the regular polygon forms a spiral twist from the tapered tip toward the shank side, and
Each edge formed by the corners of the regular polygon is formed on a virtual tapered cylindrical surface circumscribing the regular polygon, and a rake face for cutting is formed at the end of the tapered part, and the rake face and A tapered groove characterized in that a cutting edge for side cutting is formed at the outer periphery intersection with the tapered part, and a bottom edge for bottom cutting is formed at the intersection of the rake face and the tapered tip part. Polygonal taper end mill for machining. (2) Utility model registration The polygonal taper end mill for tapered groove machining according to claim 1, characterized in that the length of the cutting blade for side cutting is approximately the same as the diameter of the circumscribed circle of the tapered tip. Polygonal taper end mill for taper groove machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987054654U JPH0513452Y2 (en) | 1987-04-10 | 1987-04-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987054654U JPH0513452Y2 (en) | 1987-04-10 | 1987-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63161615U JPS63161615U (en) | 1988-10-21 |
| JPH0513452Y2 true JPH0513452Y2 (en) | 1993-04-09 |
Family
ID=30881843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987054654U Expired - Lifetime JPH0513452Y2 (en) | 1987-04-10 | 1987-04-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0513452Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2523508Y2 (en) * | 1988-06-14 | 1997-01-29 | 日立ツール 株式会社 | End mill for tapered groove processing |
| EP0456253A1 (en) * | 1990-05-11 | 1991-11-13 | Mitsubishi Materials Corporation | End mill |
| US5322394A (en) * | 1992-03-09 | 1994-06-21 | Hitachi Tool Engineering, Ltd. | Highly stiff end mill |
| JP2007165735A (en) * | 2005-12-16 | 2007-06-28 | Drill Center:Kk | Led mounting substrate and its manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58109215A (en) * | 1981-12-22 | 1983-06-29 | Sanyo Electric Co Ltd | Finishing method and tool for workpiece |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61151818U (en) * | 1985-03-09 | 1986-09-19 |
-
1987
- 1987-04-10 JP JP1987054654U patent/JPH0513452Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58109215A (en) * | 1981-12-22 | 1983-06-29 | Sanyo Electric Co Ltd | Finishing method and tool for workpiece |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63161615U (en) | 1988-10-21 |
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