JPH0222177Y2 - - Google Patents
Info
- Publication number
- JPH0222177Y2 JPH0222177Y2 JP1983132341U JP13234183U JPH0222177Y2 JP H0222177 Y2 JPH0222177 Y2 JP H0222177Y2 JP 1983132341 U JP1983132341 U JP 1983132341U JP 13234183 U JP13234183 U JP 13234183U JP H0222177 Y2 JPH0222177 Y2 JP H0222177Y2
- Authority
- JP
- Japan
- Prior art keywords
- drill
- discharge groove
- cutting blade
- groove
- cutting
- 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
- 238000005553 drilling Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Description
【考案の詳細な説明】
（技術分野）
この考案は、機械加工において、ワークに穴あ
けとねじ切りとの両加工をなしうるドリルタツプ
に関するものである。[Detailed Description of the Invention] (Technical Field) This invention relates to a drill tap that can perform both drilling and threading of a workpiece in machining.
（従来技術）
従来には、タツプの先端にドリル部を設けたド
リル付きタツプ（例えば、実開昭57−81030号公
報、実開昭55−66730号公報参照）がある。この
ドリル付きタツプによると、ワークは、ドリル部
にて穴あけ加工されたのち、タツプのねじ切り部
にてねじ切り加工される。すなわち、ドリル付き
タツプは穴あけ加工の工程とねじ切り加工の工程
との二工程による加工をなすものであるから、加
工時間が長くかかるという欠点があつた。また、
とくに、底面をもつ止まり穴のねじ切り加工にあ
つては、前記のドリル付きタツプを使用すること
は難しく、結局、ドリルで穴あけ加工したのち、
タツプでねじ切り加工しなければならず、加工時
間が長くかかるだけでなく、工具の交換にも時間
が長くかかることになつた。(Prior Art) Conventionally, there are drilled taps (see, for example, Japanese Utility Model Application Publication No. 57-81030 and Japanese Utility Model Application Publication No. 55-66730), in which a drill portion is provided at the tip of the tap. According to this tap with a drill, the workpiece is drilled by the drill part and then threaded by the threaded part of the tap. In other words, the tap with a drill requires a two-step process of drilling and threading, and therefore has the disadvantage that the process takes a long time. Also,
In particular, when threading a blind hole with a bottom surface, it is difficult to use the tap with a drill described above, and in the end, after drilling the hole with a drill,
Thread cutting had to be done with a tap, which not only took a long time to process, but also required a lot of time to change tools.
（考案の目的）
そこで、この考案が目的とすることは、上記し
た従来の欠点に鑑みて、穴あけ加工とねじ切り加
工との工程を集約し、加工時間を短縮することが
できるとともに、底面をもつ止まり穴のねじ切り
加工も可能にするドリルタツプを提供することで
ある。(Purpose of the invention) Therefore, in view of the above-mentioned drawbacks of the conventional method, the purpose of this invention is to consolidate the processes of drilling and thread cutting, to shorten the processing time, and to To provide a drill tap that also enables threading of blind holes.
（考案の構成）
上記した目的を達成するためのこの考案は、軸
本体の基端部にシヤンク部を設けるとともにその
先端部に切削部を設け、この切削部にはドリル切
刃とねじ切刃とを軸方向に並行して形成し、前記
ドリル切刃とねじ切刃との間に、ドリル切刃の回
転方向の前方に位置する第１の排出溝及びねじ切
刃の回転方向の前方に位置する第２の排出溝を設
け、第１の排出溝の溝幅Ｗ１と第２の排出溝の溝
幅Ｗ２が、
Ｗ１＞Ｗ２
の関係をもつて設定されるとともに、第１の排出
溝の溝底の径Ｄ１と第２の排出溝の溝底の径Ｄ２
が、
Ｄ１＜Ｄ２
の関係をもつて設定されたものである。(Structure of the device) This device to achieve the above-mentioned purpose provides a shank portion at the base end of the shaft body and a cutting portion at the tip thereof, and this cutting portion has a drill cutting blade and a thread cutting blade. are formed in parallel in the axial direction, and between the drill cutting blade and the thread cutting blade, a first discharge groove located at the front in the rotation direction of the drill cutting blade and a first discharge groove located at the front in the rotation direction of the thread cutting blade. 2 discharge grooves are provided, and the groove width W1 of the first discharge groove and the groove width W2 of the second discharge groove are set to have a relationship of W1>W2, and the groove bottom of the first discharge groove is Diameter D1 and diameter D2 of the groove bottom of the second discharge groove
is set with the relationship D1<D2.
（実施例）
なお当然のことながら、本工具の最終目的はド
リルで穴あけすることなくタツピングし、早くね
じたてをすることにあり、切削条件もねじ加工に
適合したものを設定すべきである。従つて、タツ
ピングマシンは、マスターネジ方式かNC同期方
式を使い、回転数とリードを正確に制御させる必
要があり、その切削条件は通常タツプ条件の周速
（Ｖ）が10〜40ｍ／min、送り（ｆ）がピツチ相
当となる。又、被削材は非鉄金属の如く軟質のも
のが好ましい。(Example) Of course, the ultimate purpose of this tool is to tap without drilling and quickly screw threads, and the cutting conditions should be set to suit thread processing. . Therefore, the tapping machine must use a master screw method or an NC synchronization method to accurately control the rotation speed and lead, and the cutting conditions are usually such that the circumferential speed (V) of the tapping condition is 10 to 40 m/min. , the feed (f) is equivalent to pitch. Further, the workpiece material is preferably a soft material such as a non-ferrous metal.
以下、この考案の一実施例を図面に従つて説明
する。ドリルタツプの側面を示した第１図、同先
端正面を拡大して示した第２図、第１図の−
線断面を拡大して示した第３図において、軸本体
１０は基端部のシヤンク部１１と先端部の切削部
１２とからなる。切削部１２には、２条のドリル
切刃１３，１３が軸方向に螺旋状に形成されてい
る。切削部１２の先端面にはドリル切刃１３，１
３の主切刃１３ａ，１３ａが形成されている。さ
らに、各ドリル切刃１３の後方、すなわち、軸本
体１０の回転方向（第２図および第３図中矢印参
照）における後方に隣接してねじ切刃１４が同ド
リル切刃１３に並行するように形成されている。
各ドリル切刃１３，１３およびねじ切刃１４，１
４はそれぞれ相反位置に配置されている。各ねじ
切刃１４，１４の先端には食い付き部１４ａが形
成されている。ドリル切刃１３とねじ切刃１４と
の間には、ドリル切刃１３の回転方向の前方に位
置する第１の排出溝１５が設けられるとともに、
ねじ切刃１４の回転方向の前方に位置する第２の
排出溝１６が設けられている。なお、第１の排出
溝１５はドリル切刃１３による切りくずを収容か
つ排出し、また、第２の排出溝１６はねじ切刃１
４による切りくずを収容かつ排出することから、
各切刃１３，１４による切りくず量に対応するよ
うに、第１の排出溝１５は第２の排出溝１６に比
し大きく設定される。すなわち第３図に示される
ように、第１の排出溝１５の溝幅Ｗ１と第２の排
出溝１６の溝幅Ｗ２が、
Ｗ１＞Ｗ２
の関係をもつて設定されるとともに、第１の排出
溝１５の溝底の径Ｄ１と第２の排出溝１６の溝底
の径Ｄ２が、
Ｄ１＜Ｄ２
の関係をもつて設定されており、これにより第１
の排出溝１５が第２の排出溝１６に比し大きく形
成されている。また、両溝１５，１６を形成する
ことにより、各切刃１３，１４の再研削を繰り返
し行うことができる。 An embodiment of this invention will be described below with reference to the drawings. Figure 1 shows the side view of the drill tap, Figure 2 shows an enlarged front view of the tip, and - of Figure 1.
In FIG. 3, which shows an enlarged line cross section, the shaft body 10 consists of a shank portion 11 at the base end and a cut portion 12 at the distal end. In the cutting portion 12, two drill cutting edges 13, 13 are formed spirally in the axial direction. A drill cutting edge 13,1 is provided on the tip surface of the cutting part 12.
Three main cutting edges 13a, 13a are formed. Furthermore, a threaded cutting edge 14 is arranged parallel to the drill cutting edge 13 adjacent to the rear of each drill cutting edge 13, that is, to the rear in the rotating direction of the shaft body 10 (see arrows in FIGS. 2 and 3). It is formed.
Each drill cutting blade 13, 13 and thread cutting blade 14, 1
4 are arranged at opposite positions. A biting portion 14a is formed at the tip of each thread cutting blade 14, 14. A first discharge groove 15 is provided between the drill cutting blade 13 and the thread cutting blade 14, and is located forward in the rotational direction of the drill cutting blade 13.
A second discharge groove 16 is provided at the front of the thread cutting blade 14 in the rotational direction. Note that the first discharge groove 15 accommodates and discharges chips produced by the drill cutting edge 13, and the second discharge groove 16 accommodates and discharges chips produced by the drill cutting edge 13.
From accommodating and discharging chips according to 4,
The first discharge groove 15 is set larger than the second discharge groove 16 so as to correspond to the amount of chips produced by each of the cutting edges 13 and 14. That is, as shown in FIG. 3, the groove width W1 of the first discharge groove 15 and the groove width W2 of the second discharge groove 16 are set to have a relationship of W1>W2, and the first discharge groove The diameter D1 of the groove bottom of the groove 15 and the diameter D2 of the groove bottom of the second discharge groove 16 are set to have a relationship of D1<D2.
The second discharge groove 15 is formed larger than the second discharge groove 16. Moreover, by forming both grooves 15 and 16, each cutting edge 13 and 14 can be repeatedly re-ground.
上記したドリルタツプによりワークのねじ切り
加工が行われると、ドリル切刃１３，１３の各主
切刃１３ａにて穴あけ加工が始まり、かつその直
後にねじ切刃１４，１４の各食い付き部１４ａを
介してねじ切り加工が始まり、ドリル切刃１３と
ねじ切刃１４との共働による穴あけとねじ切りと
の同時加工、いわゆる、複合加工がなされる。ま
た、切削部１２の尖端からねじ切刃１４の食い付
き部１４ａ先端までの長さが短かいので、底面を
もつ止まり穴のねじ切り加工も行える。 When thread cutting is performed on a workpiece using the above-mentioned drill tap, drilling starts with each of the main cutting edges 13a of the drill cutting blades 13, 13, and immediately after that, drilling is performed via each of the biting portions 14a of the thread cutting blades 14, 14. Thread cutting begins, and the drill cutting blade 13 and the thread cutting blade 14 cooperate to perform simultaneous drilling and thread cutting, so-called compound processing. Further, since the length from the tip of the cutting portion 12 to the tip of the biting portion 14a of the thread cutting blade 14 is short, it is possible to thread a blind hole with a bottom surface.
また切削中において、ドリル切刃１３による切
りくずは第１の排出溝１５に収容かつ排出される
一方、ねじ切刃１４による切りくずは第１の排出
溝１６に収容かつ排出される。このドリル切刃１
３による切りくずがねじ切刃１４による切りくず
よりも多量であるが、第１の排出溝１５が第２の
排出溝１６に比し大きく形成されていることか
ら、各排出溝１５，１６がドリル切刃１４及びね
じ切刃１４によるそれぞれの切りくず量にほぼ対
応した切りくず処理を果たすことができる。これ
により、切削中の切りくずのかみ込みという不具
合が防止される。 Further, during cutting, chips produced by the drill cutting edge 13 are accommodated and discharged into the first discharge groove 15 , while chips produced by the thread cutting blade 14 are accommodated and discharged into the first discharge groove 16 . This drill cutting edge 1
Although the amount of chips produced by 3 is larger than that produced by the thread cutting blade 14, since the first discharge groove 15 is formed larger than the second discharge groove 16, each discharge groove 15, 16 is Chip disposal approximately corresponding to the amount of chips produced by the cutting blade 14 and the thread cutting blade 14 can be achieved. This prevents the problem of chips being caught during cutting.
なお、上記実施例では両切刃１３，１４を螺旋
状としたが、第４図および第５図に示すように、
ストレート状に形成しても良い。また、第６図に
示すように、切削部１２の終端部に面取刃１７を
設ければ、ねじ穴の口元の面取り加工が伝える。
これら変更例を示した第４図〜第６図には、実施
例と同一部位に同一符号が記されている。 In the above embodiment, both cutting edges 13 and 14 were spirally shaped, but as shown in FIGS. 4 and 5,
It may also be formed into a straight shape. Further, as shown in FIG. 6, if a chamfering blade 17 is provided at the end of the cutting portion 12, chamfering of the mouth of the screw hole can be performed.
In FIGS. 4 to 6 showing these modified examples, the same parts as in the embodiment are denoted by the same reference numerals.
また、ドリル切刃１３およびねじ切刃１４の条
数は限定されない。例えば、両切刃１３，１４を
それぞれ１条あるいは３条としても良いし、ま
た、ドリル切刃１３を２条とし、ねじ切刃１４を
３条としても良い。 Moreover, the number of threads of the drill cutting edge 13 and the thread cutting edge 14 is not limited. For example, each of the cutting edges 13 and 14 may have one thread or three threads, or the drill cutting edge 13 may have two threads, and the thread cutting edge 14 may have three threads.
（考案の効果）
すなわち、この考案によれば、穴あけ加工とね
じ切り加工との二工程が集約されるので、従来に
比し、加工時間を短縮することができるととも
に、ドリル切刃とねじ切刃との相互先端間の長さ
が可及的に短かいので、底面をもつ止まり穴のね
じ切り加工も可能である。この止まり穴のねじ切
り加工においては、従来に比し、工具の変換およ
び加工に係る時間を大幅に短縮することができ
る。また、ドリル切刃とねじ切刃とが幅方向に並
行して形成され、この各切刃間に排出溝が形出さ
れることにより、両切刃の再研削を繰り返し行う
ことができるという効果も認められる。(Effects of the invention) In other words, according to this invention, the two processes of drilling and thread cutting are integrated, so the machining time can be shortened compared to the conventional method, and the drill cutting blade and thread cutting blade can be Since the length between the mutual tips of the screws is as short as possible, it is also possible to thread a blind hole with a bottom surface. In this blind hole threading process, the time required for changing tools and machining can be significantly shortened compared to the conventional method. In addition, the drill cutting edge and thread cutting edge are formed in parallel in the width direction, and a discharge groove is formed between each cutting edge, making it possible to repeatedly re-grind both cutting edges. It will be done.
とくに前記ドリル切刃とねじ切刃との間に、ド
リル切刃の回転方向の前方に位置する第１の排出
溝及びねじ切刃の回転方向の前方に位置する第２
の排出溝を設け、第１の排出溝の溝幅Ｗ１と第２
の排出溝の溝幅Ｗ２が、
Ｗ１＞Ｗ２
の関係をもつて設定されるとともに、第１の排出
溝の溝底の径Ｄ１と第２の排出溝の溝底の径Ｄ２
が、
Ｄ１＜Ｄ２
の関係をもつて設定されていることから、各排出
溝がドリル切刃及びねじ切刃によるそれぞれの切
りくず量にほぼ対応した切りくず処理を果たすこ
とができ、これにより切削中の切りくずのかみ込
みという不具合が防止され、よつて穴あけ加工と
ねじ切り加工の同時加工を良好に行なうことがで
きるという効果がある。 In particular, between the drill cutting blade and the thread cutting blade, a first discharge groove located at the front in the rotation direction of the drill cutting blade and a second discharge groove located at the front in the rotation direction of the thread cutting blade.
A discharge groove is provided, and the groove width W1 of the first discharge groove and the second discharge groove are
The groove width W2 of the discharge groove is set with the relationship W1>W2, and the groove bottom diameter D1 of the first discharge groove and the groove bottom diameter D2 of the second discharge groove
is set with the relationship of D1<D2, so each discharge groove can perform chip disposal approximately corresponding to the amount of chips produced by the drill cutting edge and the screw cutting edge, respectively, thereby reducing the amount of chips produced during cutting. This has the effect of preventing the problem of chips being trapped, and thus allowing simultaneous drilling and thread cutting to be carried out efficiently.
図面はこの考案の一実施例を示すもので、第１
図はドリルタツプの側面図、第２図は同先端正面
図、第３図は第１図の−線断面拡大図、第４
図はドリルタツプの変更例を示す側面図、第５図
は第４図の−線断面拡大図、第６図はドリル
タツプの変更例を示す側面図である。
１０……軸本体、１１……シヤンク部、１２…
…切削部、１３……ドリル切刃、１４……ねじ切
刃。
The drawing shows one embodiment of this invention.
The figure is a side view of the drill tap, Figure 2 is a front view of the tip, Figure 3 is an enlarged cross-sectional view taken along the - line in Figure 1, and Figure 4 is a side view of the drill tap.
5 is a side view showing a modified example of the drill tap, FIG. 5 is an enlarged cross-sectional view taken along the line -- in FIG. 4, and FIG. 6 is a side view showing a modified example of the drill tap. 10...Shaft body, 11...Shank portion, 12...
...Cutting part, 13...Drill cutting blade, 14...Thread cutting blade.
Claims (1)
その先端部に切削部を設け、この切削部にはドリ
ル切刃とねじ切刃とを軸方向に並行してて形成
し、前記ドリル切刃とねじ切刃との間に、ドリル
切刃の回転方向の前方に位置する第１の排出溝及
びねじ切刃の回転方向の前方に位置する第２の排
出溝を設け、第１の排出溝の溝幅Ｗ１と第２の排
出溝の溝幅Ｗ２が、 Ｗ１＞Ｗ２ の関係をもつて設定されるとともに、第１の排出
溝の溝底の径Ｄ１と第２の排出溝の溝底の径Ｄ２
が、 Ｄ１＜Ｄ２ の関係をもつて設定されたことを特徴とするドリ
ルタツプ。[Claim for Utility Model Registration] A shank part is provided at the base end of the shaft body, and a cutting part is provided at the tip thereof, and this cutting part is formed with a drill cutting blade and a thread cutting blade parallel to each other in the axial direction. between the drill cutting blade and the thread cutting blade, a first discharge groove located at the front in the rotation direction of the drill cutting blade and a second discharge groove located at the front in the rotation direction of the thread cutting blade; The groove width W1 of the first discharge groove and the groove width W2 of the second discharge groove are set to have a relationship of W1>W2, and the diameter D1 of the groove bottom of the first discharge groove and the groove width W2 of the second discharge groove are set. Diameter D2 of the groove bottom of
A drill tap characterized in that: are set with a relationship of D1<D2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13234183U JPS6039429U (en) | 1983-08-26 | 1983-08-26 | drill tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13234183U JPS6039429U (en) | 1983-08-26 | 1983-08-26 | drill tap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6039429U JPS6039429U (en) | 1985-03-19 |
| JPH0222177Y2 true JPH0222177Y2 (en) | 1990-06-14 |
Family
ID=30298887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13234183U Granted JPS6039429U (en) | 1983-08-26 | 1983-08-26 | drill tap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039429U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0237035B1 (en) * | 1986-03-13 | 1993-06-09 | Turchan, Manuel C. | Method of and tool for thread mill drilling |
| JPH11245119A (en) * | 1998-02-27 | 1999-09-14 | Mitsubishi Materials Corp | Drill tap |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6128657Y2 (en) * | 1981-01-06 | 1986-08-25 |
-
1983
- 1983-08-26 JP JP13234183U patent/JPS6039429U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6039429U (en) | 1985-03-19 |
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