JP3183463U - Long groove drill - Google Patents
Long groove drill Download PDFInfo
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- JP3183463U JP3183463U JP2013000780U JP2013000780U JP3183463U JP 3183463 U JP3183463 U JP 3183463U JP 2013000780 U JP2013000780 U JP 2013000780U JP 2013000780 U JP2013000780 U JP 2013000780U JP 3183463 U JP3183463 U JP 3183463U
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- discharge groove
- waste discharge
- cutting waste
- cutting
- shank
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Abstract
【課題】穴あけ作業時に中心位置ずれや穴径拡大を起こさない長溝ドリルを提供する。
【解決手段】ボディー１はシャンク２を離れる末端部に静止点３を形成し、静止点の両側にそれぞれ第１切削刃４と第２切削刃５とを形成する。第１切削刃は第１切削屑排出溝６に連結し、第２切削刃は第２切削屑排出溝７に連結する。第１切削屑排出溝は第１切削刃よりシャンクを巡らして凹設し、第２切削屑排出溝は第２切削刃よりシャンクを巡らして凹設し、かつ第１切削屑排出溝と第２切削屑排出溝は一定距離を巡らした後、第１切削屑排出溝と第２切削屑排出溝が互いに連絡して第３切削屑排出溝８を形成すると共に、第３切削屑がシャンクに向かって巡らせ、第３切削屑排出溝の幅が第１切削屑排出溝と第２切削屑排出溝の幅の合計値より小さいため、ドリル全体の強度が向上する。
【選択図】図１Provided is a long groove drill that does not cause center position shift or hole diameter expansion during drilling operation.
A body 1 has a stationary point 3 formed at a distal end of the shank 2 and a first cutting blade 4 and a second cutting blade 5 formed on both sides of the stationary point. The first cutting blade is connected to the first cutting waste discharge groove 6, and the second cutting blade is connected to the second cutting waste discharge groove 7. The first cutting waste discharge groove is recessed from the first cutting blade around the shank, the second cutting waste discharge groove is recessed from the second cutting blade around the shank, and the first cutting waste discharge groove and the second After the cutting waste discharge groove has made a certain distance, the first cutting waste discharge groove and the second cutting waste discharge groove communicate with each other to form the third cutting waste discharge groove 8, and the third cutting waste is directed toward the shank. Since the width of the third cutting waste discharge groove is smaller than the total value of the widths of the first cutting waste discharge groove and the second cutting waste discharge groove, the strength of the entire drill is improved.
[Selection] Figure 1
Description
本考案は長溝ドリルに関し、特にドリルの第１切削屑排出溝と第２切削屑排出溝が一定距離を巡らして互いに連絡した後、第３切削屑排出溝を形成し、かつ第３切削屑排出溝の幅が第１切削屑排出溝と第２切削屑排出溝の幅の合計値より小さいため、ドリルの強度が向上し、ドリルの中心位置ずれや穴径が拡大されることを防止できる。 The present invention relates to a long groove drill, and in particular, after the first cutting waste discharge groove and the second cutting waste discharge groove of the drill contact each other over a certain distance, the third cutting waste discharge groove is formed and the third cutting waste discharge is performed. Since the width of the groove is smaller than the total value of the widths of the first cutting waste discharge groove and the second cutting waste discharge groove, the strength of the drill is improved, and it is possible to prevent the center position shift and the hole diameter of the drill from being enlarged.
公知のドリルは、末端部の切削刃で加工物の穴あけ作業を行うとき、切削刃の一側に連結された切削屑排出溝から加工物の切削屑を加工方向の反対側より吐き出す。切削屑排出溝は巡らして凹設されているため、切削刃の数が多いほどドリルの横断面の断面積が小さくなり、ドリル全体の強度が低下し、ドリルによる穴あけ作業のときに中心位置ずれや穴径が拡大する現象を引き起こす。 When a known drill performs a drilling operation of a workpiece with a cutting blade at a terminal portion, the cutting dust of the workpiece is discharged from the opposite side in the machining direction from a cutting waste discharge groove connected to one side of the cutting blade. Since the cutting waste discharge grooves are recessed, the cross-sectional area of the cross section of the drill decreases as the number of cutting blades increases, the overall strength of the drill decreases, and the center position shifts when drilling with the drill. And cause a phenomenon that the hole diameter increases.
さらに、ドリルによる穴あけ加工のときに発生する切削屑は切削屑排出溝より吐き出され、切削屑は切削屑排出溝に沿って加工物の表面に吐き出された後、ほとんどの切削屑は重力によって切削屑排出溝から吐き出されるため、ドリルの切削屑排出溝末端部はあまり役立たない反面、ドリルの強度は役立たない切削屑排出溝によって低下する恐れがある。 Furthermore, the cutting waste generated during drilling with a drill is discharged from the cutting waste discharge groove, and the cutting waste is discharged to the surface of the workpiece along the cutting waste discharge groove. Since it is discharged from the waste discharge groove, the end portion of the cutting waste discharge groove of the drill is not very useful, but the strength of the drill may be reduced by the useless cutting waste discharge groove.
本考案はドリル全体の強度を向上せしめ、ドリルの穴あけ作業による中心位置ずれや穴径が拡大される現象を軽減し、ドリルの穴あけ作業精度を向上することができる長溝ドリルを提供することを主な目的とする。 The main purpose of the present invention is to provide a long groove drill that can improve the drilling work accuracy by improving the overall strength of the drill, reducing the misalignment of the center due to drilling work, and increasing the hole diameter. With a purpose.
前述の目的を達成するため、本考案の長溝ドリルはボディーを有し、ボディーの一端はシャンクに連結していて、かつボディーはシャンクを離れる末端部に静止点を形成し、静止点の両側にそれぞれ第１切削刃と、第２切削刃とを形成している。第１切削刃は第１切削屑排出溝に連結し、第２切削刃は第２切削屑排出溝に連結する。第１切削屑排出溝は第１切削刃よりシャンクを巡らして凹設し、第２切削屑排出溝は第２切削刃よりシャンクを巡らして凹設し、かつ第１切削屑排出溝と第２切削屑排出溝は一定距離を巡らした後、第１切削屑排出溝と第２切削屑排出溝が互いに連絡して第３切削屑排出溝を形成すると共に、第３切削屑がシャンクに向かって巡らせ、第３切削屑排出溝の幅は第１切削屑排出溝と第２切削屑排出溝の幅の合計値より小さい。 In order to achieve the above-mentioned object, the long groove drill of the present invention has a body, one end of the body is connected to the shank, and the body forms a stationary point at the end portion leaving the shank, and on both sides of the stationary point. Each forms a first cutting blade and a second cutting blade. The first cutting blade is connected to the first cutting waste discharge groove, and the second cutting blade is connected to the second cutting waste discharge groove. The first cutting waste discharge groove is recessed from the first cutting blade around the shank, the second cutting waste discharge groove is recessed from the second cutting blade around the shank, and the first cutting waste discharge groove and the second After the cutting waste discharge groove goes around a certain distance, the first cutting waste discharge groove and the second cutting waste discharge groove communicate with each other to form a third cutting waste discharge groove, and the third cutting waste moves toward the shank. The width of the third cutting waste discharge groove is smaller than the total value of the widths of the first cutting waste discharge groove and the second cutting waste discharge groove.
第３切削屑排出溝の幅は、第１切削屑排出溝と第２切削屑排出溝の付近部よりシャンクに向かって先細り状に形成されている。 The width | variety of a 3rd cutting waste discharge groove is formed in the taper shape toward the shank from the vicinity of the 1st cutting waste discharge groove and the 2nd cutting waste discharge groove.
以下、添付図面を参照して本考案の実施の形態を詳細に説明する。 Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
図１と２を参照する。図から明かのように、本考案の長溝ドリルはボディー１を有し、ボディー１の一端は加工機械の挟持に提供するシャンク２を有し、ボディー１はシャンク２の末端部に静止点３を形成し、静止点３の両側はそれぞれ加工物を切削する第１切削刃４と第２切削刃５とを形成し、第１切削刃４は第１切削屑排出溝６に連結し、第２切削刃５は第２切削屑排出溝７に連結する。第１切削屑排出溝６は第１切削刃４よりシャンク２を巡らして凹設し、第２切削屑排出溝７は第２切削刃５よりシャンク２を巡らして凹設する。かつ第１切削屑排出溝６と第２切削屑排出溝７は一定距離を巡らした後、第１切削屑排出溝６と第２切削屑排出溝７が互いに連絡して第３切削屑排出溝８を形成し、かつ第３切削屑排出溝８がシャンク２に向かって巡らせ、第３切削屑排出溝８の幅は第１切削屑排出溝６と第２切削屑排出溝７の幅の合計値より小さく、第３切削屑排出溝８の幅は第１切削屑排出溝６と第２切削屑排出溝７の付近部からシャンク２に向かって先細り状に形成する。 Reference is made to FIGS. As is clear from the figure, the long groove drill of the present invention has a body 1, one end of the body 1 has a shank 2 that is provided for clamping a processing machine, and the body 1 has a stationary point 3 at the end of the shank 2. The first cutting blade 4 and the second cutting blade 5 for cutting the workpiece are formed on both sides of the stationary point 3, respectively. The first cutting blade 4 is connected to the first cutting waste discharge groove 6 and the second The cutting blade 5 is connected to the second cutting waste discharge groove 7. The first cutting waste discharge groove 6 is recessed from the first cutting blade 4 around the shank 2, and the second cutting waste discharge groove 7 is recessed from the second cutting blade 5 around the shank 2. And after the 1st cutting waste discharge groove 6 and the 2nd cutting waste discharge groove 7 go through a fixed distance, the 1st cutting waste discharge groove 6 and the 2nd cutting waste discharge groove 7 mutually communicate, and the 3rd cutting waste discharge groove 8 and the third cutting waste discharge groove 8 circulates toward the shank 2, and the width of the third cutting waste discharge groove 8 is the sum of the widths of the first cutting waste discharge groove 6 and the second cutting waste discharge groove 7. The width of the third cutting waste discharge groove 8 is smaller than the value, and is tapered from the vicinity of the first cutting waste discharge groove 6 and the second cutting waste discharge groove 7 toward the shank 2.
第１切削屑排出溝６と第２切削屑排出溝７が一定距離を巡らして互いに連絡して、第３切削屑排出溝８を形成し、かつ第３切削屑排出溝８の幅は第１切削屑排出溝６と第２切削屑排出溝７の幅の合計値より小さいため、ボディー１の横断面の断面積を有効に増大しドリル全体の耐変形（剛性）を向上することによって、ドリルによる穴あけ作業のとき、中心位置ずれや穴径が拡大される現象を発生しにくい、ドリルによる穴あけ作業穴あけ加工精度を有効に向上できる。 The first cutting waste discharge groove 6 and the second cutting waste discharge groove 7 are connected to each other over a certain distance to form the third cutting waste discharge groove 8, and the width of the third cutting waste discharge groove 8 is the first. Since it is smaller than the total width of the cutting waste discharge groove 6 and the second cutting waste discharge groove 7, the cross-sectional area of the cross section of the body 1 is effectively increased and the deformation resistance (rigidity) of the entire drill is improved. When drilling by drilling, it is possible to effectively improve the drilling accuracy of drilling by drilling, which is less likely to cause the center position deviation and the phenomenon that the hole diameter is enlarged.
さらに、第３切削屑排出溝８の幅は第１切削屑排出溝６と第２切削屑排出溝７の幅の合計値より小さいが、第３切削屑排出溝８の幅はそれぞれ第１切削屑排出溝６と第２切削屑排出溝７より大きい。よって、第３切削屑排出溝８の切削刃吐き出し能力は第１切削屑排出溝６と第２切削屑排出溝７の切削屑吐き出し能力の合計値を下らないため、第３切削屑排出溝８が切削屑を順調に排出することができる。一方、第３切削屑排出溝８は第１切削屑排出溝６と第２切削屑排出溝７が一定距離を巡らして互いに連絡し形成されるため、第３切削屑排出溝８が第１切削屑排出溝６と第２切削屑排出溝７近端に比較的大きい幅を設けて切削屑の良好な流動性を提供し、第１切削屑排出溝６と第２切削屑排出溝７の切削屑が第３切削屑排出溝８に堆積（切削屑の滞留）を防止して置き、第１切削屑排出溝６と第２切削屑排出溝７の切削屑が第３切削屑排出溝８に進入しシャンク２に運ばれた後は、第３切削屑排出溝８にて適切な幅を設ければ良い。よって、本考案において、第３切削屑排出溝８の設計は第１切削屑排出溝６と第２切削屑排出溝７よりシャンク２に向かって先細り状に形成することは切削屑が第３切削屑排出溝８内部に順調に移動できるほか、ボディー１の横断面の断面積を増加すると共にドリル全体の耐変形（剛性）を向上できる。 Further, the width of the third cutting waste discharge groove 8 is smaller than the total value of the widths of the first cutting waste discharge groove 6 and the second cutting waste discharge groove 7, but the width of the third cutting waste discharge groove 8 is the first cutting width. It is larger than the waste discharge groove 6 and the second cutting waste discharge groove 7. Therefore, since the cutting blade discharge capacity of the third cutting waste discharge groove 8 does not fall below the total value of the cutting waste discharge capacity of the first cutting waste discharge groove 6 and the second cutting waste discharge groove 7, the third cutting waste discharge groove 8 Cutting waste can be discharged smoothly. On the other hand, the third cutting waste discharge groove 8 is formed so that the first cutting waste discharge groove 6 and the second cutting waste discharge groove 7 are formed in contact with each other over a certain distance. A relatively large width is provided near the scrap discharge groove 6 and the second cutting scrap discharge groove 7 to provide good fluidity of the cutting scrap, and the first cutting scrap discharge groove 6 and the second cutting scrap discharge groove 7 are cut. Debris is placed in the third cutting waste discharge groove 8 while preventing accumulation (stagnation of cutting waste), and the cutting waste from the first cutting waste discharge groove 6 and the second cutting waste discharge groove 7 is placed in the third cutting waste discharge groove 8. After entering and being transported to the shank 2, an appropriate width may be provided in the third cutting waste discharge groove 8. Therefore, in the present invention, the design of the third cutting waste discharge groove 8 is such that the cutting waste is formed in a tapered shape from the first cutting waste discharge groove 6 and the second cutting waste discharge groove 7 toward the shank 2. Besides being able to move smoothly into the waste discharge groove 8, the cross-sectional area of the cross section of the body 1 can be increased and the deformation resistance (rigidity) of the entire drill can be improved.
よって、本考案が公知技術の課題および欠点を解決できる主な技術は、第１切削屑排出溝６と第２切削屑排出溝７を一定距離に巡らして互いに連絡して第３切削屑排出溝８を形成し、かつ第３切削屑排出溝８の幅は第１切削屑排出溝６と第２切削屑排出溝７の幅の合計値より小さく設けており、ボディー１の横断面の断面積を有効に増加し、ドリル全体の強度を向上でき、ドリルによる穴あけ作業の中心位置ずれや穴径が拡大される現象を軽減すると共に、第３切削屑排出溝８の幅を第１切削屑排出溝６と第２切削屑排出溝７よりシャンク２に向かって先細り状に形成し、ボディー１の耐変形能力を向上できる。 Therefore, the main technique by which the present invention can solve the problems and disadvantages of the known technique is that the first cutting waste discharge groove 6 and the second cutting waste discharge groove 7 are connected to each other through a certain distance, and the third cutting waste discharge groove is connected. 8, and the width of the third cutting waste discharge groove 8 is smaller than the total value of the widths of the first cutting waste discharge groove 6 and the second cutting waste discharge groove 7, and the cross-sectional area of the cross section of the body 1. Can effectively increase the strength of the entire drill, reduce the center position shift of drilling work by drilling and the phenomenon that the diameter of the hole is enlarged, and discharge the width of the third cutting waste discharge groove 8 to the first cutting waste. The groove 6 and the second cutting waste discharge groove 7 are tapered toward the shank 2 to improve the deformation resistance of the body 1.
１ ボディー
２ シャンク
３ 静止点
４ 第１切削刃
５ 第２切削刃
６ 第１切削屑排出溝
７ 第２切削屑排出溝
８ 第３切削屑排出溝
DESCRIPTION OF SYMBOLS 1 Body 2 Shank 3 Rest point 4 1st cutting blade 5 2nd cutting blade 6 1st cutting waste discharge groove 7 2nd cutting waste discharge groove 8 3rd cutting waste discharge groove
Claims (2)
前記第１切削刃は第１切削屑排出溝に連結し、前第２切削刃は第２切削屑排出溝に連結し、前記第１切削屑排出溝記は前記第１切削刃から前記シャンク向きに巡らして凹設し、第２切削屑排出溝は前記第２切削刃から前記シャンク向きに巡らして凹設し、かつ前記第１切削屑排出溝と前記第２切削屑排出溝が互いに連絡して第３切削屑排出溝を形成し、前記第３切削屑排出溝が前記シャンクに巡らしていて、かつ前記第３切削屑排出溝の幅は前記第１切削屑排出溝と前記第２切削屑排出溝の幅の合計値より小さいことを特徴とする長溝ドリル。 Having a body, one end of the body is connected to a shank provided for clamping a processing machine, and the body forms a stationary point at an end portion leaving the shank. Forming a first cutting blade and a second cutting blade for cutting
The first cutting blade is connected to the first cutting waste discharge groove, the front second cutting blade is connected to the second cutting waste discharge groove, and the first cutting waste discharge groove is directed from the first cutting blade to the shank. The second cutting waste discharge groove is recessed from the second cutting blade in the direction of the shank, and the first cutting waste discharge groove and the second cutting waste discharge groove communicate with each other. The third cutting waste discharge groove is formed around the shank, and the width of the third cutting waste discharge groove is the first cutting waste discharge groove and the second cutting waste discharge groove. A long groove drill characterized by being smaller than the total width of the discharge grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013000780U JP3183463U (en) | 2013-02-15 | 2013-02-15 | Long groove drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013000780U JP3183463U (en) | 2013-02-15 | 2013-02-15 | Long groove drill |
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| Publication Number | Publication Date |
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| JP3183463U true JP3183463U (en) | 2013-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2013000780U Expired - Lifetime JP3183463U (en) | 2013-02-15 | 2013-02-15 | Long groove drill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015029963A1 (en) * | 2013-08-26 | 2015-03-05 | 京セラ株式会社 | Drill and method for manufacturing cut product using same |
| JP2016016481A (en) * | 2014-07-08 | 2016-02-01 | ユニオンツール株式会社 | Drilling tool |
-
2013
- 2013-02-15 JP JP2013000780U patent/JP3183463U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015029963A1 (en) * | 2013-08-26 | 2015-03-05 | 京セラ株式会社 | Drill and method for manufacturing cut product using same |
| JP2016016481A (en) * | 2014-07-08 | 2016-02-01 | ユニオンツール株式会社 | Drilling tool |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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