JPH0321853Y2 - - Google Patents
Info
- Publication number
- JPH0321853Y2 JPH0321853Y2 JP1984064895U JP6489584U JPH0321853Y2 JP H0321853 Y2 JPH0321853 Y2 JP H0321853Y2 JP 1984064895 U JP1984064895 U JP 1984064895U JP 6489584 U JP6489584 U JP 6489584U JP H0321853 Y2 JPH0321853 Y2 JP H0321853Y2
- Authority
- JP
- Japan
- Prior art keywords
- discharge groove
- chip discharge
- cutting
- stepped portion
- cutter body
- 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
Links
Landscapes
- Drilling Tools (AREA)
Description
【考案の詳細な説明】
技術分野
この考案は、円筒状を成すカツター本体の外周
に螺旋状の切屑排出溝を設けたホールカツターに
関するものである。[Detailed Description of the Invention] Technical Field This invention relates to a hole cutter having a cylindrical cutter body with a spiral chip discharge groove provided on the outer periphery of the cutter body.
考案の目的
この考案の目的は、切屑の排出を円滑にして切
削効率を向上させ、ひいては切味の良いホールカ
ツターを提供することにある。Purpose of the invention The purpose of this invention is to improve cutting efficiency by smoothly discharging chips, and to provide a hole cutter with good cutting quality.
考案の構成
この目的を達成するために、この目的を達成す
るために、この考案においては円筒状のカツター
本体の下端周縁に複数個の切削刃を設け、各切削
刃のすくい面から上方へ延びるカツター本体の外
周には螺旋状の切屑排出溝を形成したホールカツ
ターにおいて、前記切屑排出溝に段差部を設け、
その下方部分が同段差部の上方部分よりも深くな
るようにするとともに、各切屑排出溝間の突条の
うち１つおきのものを前記段差部よりも上方にお
いて切除することによつて相隣る切屑排出溝を連
続させて幅広の排出溝を形成する一方、下方にお
いて残された突条には切屑排出用の傾斜面を形成
した構成を採つている。Structure of the invention In order to achieve this object, in this invention, a plurality of cutting blades are provided on the lower edge of the cylindrical cutter body, and each cutting blade extends upward from the rake face. In a hole cutter in which a spiral chip discharge groove is formed on the outer periphery of the cutter body, a stepped portion is provided in the chip discharge groove,
By making the lower part deeper than the upper part of the same step part, and cutting out every other protrusion between each chip discharge groove above the step part, The chip discharge grooves are continuous to form a wide discharge groove, while the protrusions left at the bottom are formed with inclined surfaces for chip discharge.
実施例
以下、この考案を具体化した実施例を図面に基
づいて説明する。Embodiments Hereinafter, embodiments embodying this invention will be described based on the drawings.
円筒状をなすカツター本体１の下端周縁には、
第１、第２の切刃２，３が等間隔をおいて交互に
固設されている。 At the lower edge of the cylindrical cutter body 1,
First and second cutting blades 2 and 3 are alternately fixed at equal intervals.
カツター本体１の外周には前記切刃チツプ２，
３のすくい面より回転方向後方側上方へ螺旋状に
切屑排出溝が延びるとともに、各切屑排出溝７間
の突状４のうち１つおきのものが下端部を除いて
切除されて、相隣る切屑排出溝７が連続して幅広
排出溝５が形成されている。また、それら突条４
の切除された残余の下端部分は切削された切屑が
スムーズに排出されるための傾斜状に面取りされ
た傾斜面４ａ，４ｂ，４ｃが形成されている。各
切屑排出溝７の上下のほぼ中間部分には段差部６
が形成されて、その段差部６の下方部分が上側部
よりも深くなつている。 On the outer periphery of the cutter body 1, the cutting blade tip 2,
The chip evacuation groove extends spirally from the rake surface of No. 3 to the upper rear side in the rotational direction, and every other protrusion 4 between each chip evacuation groove 7 is cut off except for the lower end, and the adjacent chip ejection grooves are A wide discharge groove 5 is formed by continuous chip discharge grooves 7. In addition, those protrusions 4
The lower end portion of the remaining portion after cutting is formed with inclined surfaces 4a, 4b, and 4c which are chamfered in an inclined manner so that the cut chips can be smoothly discharged. A stepped portion 6 is located approximately midway between the top and bottom of each chip discharge groove 7.
is formed, and the lower part of the stepped part 6 is deeper than the upper part.
従つて、各切屑排出溝７の段差部６の下方部分
はその容積が大きくなり、排出される切屑が容易
に導かれるとともに、自由に動くことができる。
このため、切屑の滞溜を防止でき、カツターとの
切味を左右する切屑排出を円滑に行うことがで
き、良好な切削性能を得ることができる。さらに
この実施例においては切屑排出溝７が上方で拡が
つて幅広の排出溝になつているため、円滑な切屑
排出溝が一層助長され、きわめて切味の良いカツ
ターとすることができる。 Therefore, the volume of the lower portion of the stepped portion 6 of each chip discharge groove 7 is increased, and the discharged chips are easily guided and can move freely.
Therefore, accumulation of chips can be prevented, chips that affect the cutting quality with the cutter can be smoothly discharged, and good cutting performance can be obtained. Furthermore, in this embodiment, since the chip discharge groove 7 widens upward to form a wide discharge groove, a smooth chip discharge groove is further promoted, resulting in a cutter with extremely good sharpness.
考案の効果
以上、詳述したようにこの考案は、幅広の排出
溝を形成したため切屑の排出がスムーズとなり、
各切屑排出溝に段差部を設け、その下方部分を同
段差部の上方部分よりも深くなるようにしたので
切削刃と近接する下方部分はその容積が飛躍的に
大きくなつて、その結果切屑の排出を極めてスム
ーズにでき、また段差部より下方の突条には切屑
排出用の傾斜面を形成したため切屑が突条にて進
出妨害を受けることがなくやはりスムーズに排出
される等の切屑の排出に関して優れた効果を奏
し、非常に切削性能の良いホールカツターを提供
できるのである。Effects of the device As detailed above, this device forms a wide discharge groove, which facilitates the smooth discharge of chips.
Each chip discharge groove is provided with a step, and the lower part of the groove is deeper than the upper part of the same step, so the volume of the lower part adjacent to the cutting blade increases dramatically, resulting in the removal of chips. Chips can be discharged extremely smoothly, and since the protrusions below the step part have sloped surfaces for discharging chips, chips are not hindered by the protrusions and can be discharged smoothly. This makes it possible to provide a hole cutter with excellent cutting performance.
第１図は、この考案を具体化したホールカツタ
ーの正面図、第２図は断面図である。
１……カツター本体、２，３……切削刃、４…
…突条、４ａ，４ｂ，４ｃ……傾斜面、５……幅
広の排出溝、７……切屑排出溝、６……段差部。
FIG. 1 is a front view of a hole cutter embodying this idea, and FIG. 2 is a sectional view. 1... Cutter body, 2, 3... Cutting blade, 4...
... Protrusion, 4a, 4b, 4c... Inclined surface, 5... Wide discharge groove, 7... Chip discharge groove, 6... Step portion.
Claims (1)
切削刃２，３を設け、各切削刃２，３のすくい面
から上方へ延びるカツター本体１の外周には螺旋
状の切屑排出溝７を形成したホールカツターにお
いて、 前記切屑排出溝７に段差部６を設け、その下方
部分が同段差部６の上方部分よりも深くなるよう
にするとともに、各切屑排出溝７間の突条４のう
ち１つおきのものを前記段差部６よりも上方にお
いて切除することによつて相隣る切屑排出溝７を
連続させて幅広の排出溝５を形成する一方、下方
において残された突条４には切屑排出用の傾斜面
４ａ，４ｂ，４ｃを形成したことを特徴とするホ
ールカツター。[Claims for Utility Model Registration] A plurality of cutting blades 2 and 3 are provided on the lower edge of the cylindrical cutter body 1, and a spiral shape is formed on the outer periphery of the cutter body 1 extending upward from the rake surface of each cutting blade 2 and 3. In the hole cutter in which a chip discharge groove 7 is formed, the chip discharge groove 7 is provided with a stepped portion 6, the lower part of which is deeper than the upper portion of the stepped portion 6, and each chip discharge groove By cutting out every other one of the protrusions 4 between the grooves 7 above the stepped portion 6, the adjacent chip discharge grooves 7 are made continuous to form a wide discharge groove 5. A hole cutter characterized in that slopes 4a, 4b, and 4c for discharging chips are formed on the protrusion 4 left behind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6489584U JPS60178514U (en) | 1984-05-02 | 1984-05-02 | hole cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6489584U JPS60178514U (en) | 1984-05-02 | 1984-05-02 | hole cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60178514U JPS60178514U (en) | 1985-11-27 |
| JPH0321853Y2 true JPH0321853Y2 (en) | 1991-05-13 |
Family
ID=30596400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6489584U Granted JPS60178514U (en) | 1984-05-02 | 1984-05-02 | hole cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60178514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101861953B1 (en) * | 2017-02-03 | 2018-05-28 | 한영희 | An router end mill structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3698141B2 (en) * | 2002-01-18 | 2005-09-21 | マックス株式会社 | Core drill |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL63082A0 (en) * | 1980-07-28 | 1981-09-13 | Hougen Everett D | Annular cutter for metal workpieces |
| JPS57197411U (en) * | 1981-06-13 | 1982-12-15 | ||
| US4362781A (en) * | 1981-09-21 | 1982-12-07 | Scott Paper Company | Flushable premoistened wiper |
-
1984
- 1984-05-02 JP JP6489584U patent/JPS60178514U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101861953B1 (en) * | 2017-02-03 | 2018-05-28 | 한영희 | An router end mill structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60178514U (en) | 1985-11-27 |
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