JPS61136725A - Tapping work and apparatus thereof - Google Patents

Tapping work and apparatus thereof

Info

Publication number
JPS61136725A
JPS61136725A JP59257167A JP25716784A JPS61136725A JP S61136725 A JPS61136725 A JP S61136725A JP 59257167 A JP59257167 A JP 59257167A JP 25716784 A JP25716784 A JP 25716784A JP S61136725 A JPS61136725 A JP S61136725A
Authority
JP
Japan
Prior art keywords
hole
tap
lubricating oil
chips
blade
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.)
Pending
Application number
JP59257167A
Other languages
Japanese (ja)
Inventor
Akio Komura
明夫 小村
Masahiko Yamamoto
昌彦 山本
Shoichi Honda
昭一 本田
Fumio Omoto
大本　富美男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP59257167A priority Critical patent/JPS61136725A/en
Publication of JPS61136725A publication Critical patent/JPS61136725A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/006—Devices for removing chips by sucking and blowing simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G5/00—Thread-cutting tools; Die-heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Abstract

PURPOSE:To finish a tapped hole in a hole in a short time by forming the chips cut on a cutting edge surface into small pieces by a chip breaker and discharging said chips outside with lubricating oil from a penetration hole at the center part of a tap body. CONSTITUTION:A penetration hole 15 for discharging chips is formed at the center part of a tap body 14, and a cutting groove 17 communicating to the hole 15 and an oil hole 18 which leads to the cutting groove 17 from the vicinity of a cutter 16 are formed at the biting part of the cutter 16, and a chip breaker 20 is formed onto the cutting edge surface 19 of the cutter 16. The inside of a hole 3 is put into negative-pressure state by the operation of a pump, and the lubricating oil jetted-out onto the upper surface of a workpiece 1 from a nozzle 29 is introduced into the gap between tapes 6 and 8 and a screw groove 7, and further introduced into the lower part inside the hole 3 through the oil hole 18 and the cutter groove 17, and further inhaled upwardly through the hole 15. While, chips 11 are formed into small pieces of chips 11A by the chip breaker 20, and said chips are discharged outside, passing through the hole 15 by the aid of the flow of lubricating oil.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はタッピング工作法とタッピング装置とに関する
。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tapping method and a tapping device.

従来の技術 第６図（ａ）〜（ｄｌに基づいてタッピング工作法の概
略を説明すると、まず（ａｔに示すごとく、被加工物（
１）にドリル（２）で孔（３）ヲ開ける。次に（ｂｌに
示すごとく孔（３）の開口部にカッター（４）でチャン
ファ（５）全形成し、次に（ｃｌに示すごとく２瞥タツ
プ（６）で上記孔（３）にねじ溝（７）ｔ−形成した後
、（ｄ）に示すごとく３番タップ（８）で上記ねじ溝（
７］を仕上げている。To explain the outline of the tapping method based on the conventional technology Fig. 6(a) to (dl), first, as shown in (at), the workpiece (
Drill a hole (3) in 1) with a drill (2). Next, as shown in (bl), a chamfer (5) is completely formed at the opening of the hole (3) using a cutter (4), and then, as shown in (cl), a screw groove is formed in the hole (3) using a double tap (6). (7) After forming T-, tap No. 3 (8) as shown in (d) above thread groove (
7] is being completed.

発明が解決しようとする問題点 上記従来構成において、２番および３番のタップ（６）
　（８）としてスパイラルタップを用い５た場合には、
第７図に示すごとく切刃面αＱで切削されたチップ（６
）が刃溝＠内をねじられながら上方へ生長してぃき、排
出される。ところが第８図に示すごとく、その生長した
チップ（ロ）が刃溝明白に入夛込もうとする切刃面αＯ
と、仮加工物（１）の上面のねじ溝（７）の外向縁との
曲にかみ込まれることがある。このようにチップＣｌ１
ｌと切刃面αＯとねじ溝（７）の外周縁との位相が一致
してチップαηがタップ（６）　（８）とねじ溝（７）
との間にかみ込まれると、切刃面αＱがチップ（６）に
よって破損させられてしまうものである。したがって従
来ではチップ但がある程度生長すると、作動を止め、生
長したチップ回をベンチなどで折って引き抜いている。Problems to be Solved by the Invention In the above conventional configuration, the second and third taps (6)
When using a spiral tap as (8),
As shown in Fig. 7, the chip (6
) grows upwards while being twisted inside the blade groove and is ejected. However, as shown in Fig. 8, the grown chip (b) clearly tries to enter the cutting edge αO
It may get caught in the curve between the outer edge of the thread groove (7) on the upper surface of the temporary workpiece (1). In this way chip Cl1
l, the cutting edge αO, and the outer periphery of the thread groove (7) are in phase, and the tip αη taps (6) (8) and the thread groove (7).
If the chip (6) gets caught between the chip (6) and the chip (6), the cutting surface αQ will be damaged. Therefore, conventionally, once the chips have grown to a certain extent, the operation is stopped and the grown chips are broken off on a bench or the like and pulled out.

このため一つのねじ溝（７）ｆ、形成するのに長時間を
要するものである。Therefore, it takes a long time to form one thread groove (7)f.

本発明は上記問題点を解消したタッピング工作法および
その装置を堤供することを目的とするものである。The object of the present invention is to provide a tapping method and an apparatus therefor which solve the above-mentioned problems.

問題を解決、するための手段 上記問題を解決するため、本発明のタッピング工作法は
、タップ本体の中心部にチップ排出用貫通穴を形成し、
刃の食付き部に周方向適当間隔おきに上記貫通穴と連通
ずる刃溝を形成し、タップ本体外周面の刃近傍から刃溝
にたつする細穴を形成し、６刃の切刃面にチップブレー
カ全形成したタップをねじ穴にあてがい、ねじ穴に潤滑
油全供給し、上記貫通穴を負圧伏居にし、タップを回転
させ、それによって各切刃面で切削したチップをチップ
ブレーカで折って小片チップを形成し、その小片チップ
をτ潤滑油とともに貫通穴を介して外部へ排出するもの
である。Means for solving the problem In order to solve the above problem, the tapping method of the present invention forms a through hole for chip ejection in the center of the tap body,
Form grooves that communicate with the through holes in the chamfered part of the blade at appropriate intervals in the circumferential direction, and form small holes extending from the vicinity of the blades on the outer peripheral surface of the tap body to the blade grooves, and on the cutting surface of the six blades. Place the fully formed chip breaker tap on the threaded hole, fully supply lubricating oil to the threaded hole, apply negative pressure to the through hole, rotate the tap, and thereby cut the chips on each cutting surface with the chip breaker. It is folded to form a small chip, and the small chip is discharged to the outside through a through hole along with τ lubricating oil.

また本発明のタッピング装置は、回転駆動させられるタ
ッピングホルダにロータリバルブを介してタップを固定
し、ねじ穴に潤滑油を供給する歯溝油供給装置を設け、
ロータリバルブおよびタップの中心に形成した貫通穴を
介してねじ穴から小片チップを含む潤滑油を吸引する吸
引装置を設けたものである。Further, the tapping device of the present invention fixes the tap via a rotary valve to the tapping holder that is rotationally driven, and is provided with a tooth groove oil supply device that supplies lubricating oil to the screw hole.
A suction device is provided to suck lubricating oil containing small chips from a screw hole through a through hole formed in the center of a rotary valve and a tap.

実施例 以下、本発明の第１の実施例を第１図〜第４図に基づい
て説明する。この実施例における２番または３番のタッ
プ（６）　（８）は次のように構成されている。すなわ
ちタップ本体ａ＜の中心部にチップ排出用貫通穴０９を
形成し、刃αＱの食付き部（１６Ａ）に周方向適当間隔
おきに上記貫通穴（至）と連通ずる復改℃の実施例では
６つ）の刃溝αηを形成し、タップ本体ｑ→外局面の刃
αＱ近傍から刃溝α刀にたつする油穴〇８１を形成し、
６刃α６の切刃面四にチップブレーカ■を形成したもの
である。四はロータリバルブであって、上端軸部（２２
Ａ）がタッピングホルダ曽に固定されると共に下面に形
成した大径穴（２２Ｂ）がタップ本体αぐの上端部に嵌
合しかつその大径穴（２２Ｂ）から外周面の凍犬溝（２
２０）にたつするＬ字状の油通路（２２Ｄ）を形成した
パルプ本体＠と、そのパルプ本体■に回転自在に外嵌し
て上記環状溝（２２ｃ）を覆う環状体（至）と、その環
状体（至）を位置ずれしないように支持するスナップリ
ング（至）と、０りング翰と、環状体（ハ）に突設され
た排出口−とから構成してあも■は排出口りθとポンプ
（図示せず）の吸引口とを連通させる連辿管、四は被加
工物（１）の上方からねじ溝（７）に向けて潤滑油を供
給するための潤滑油ノズル、（至）はタップ固定用ねじ
である。EXAMPLE A first example of the present invention will be described below with reference to FIGS. 1 to 4. The second or third tap (6) (8) in this embodiment is constructed as follows. That is, an embodiment of the reversal °C in which a chip ejection through hole 09 is formed in the center of the tap body a, and the chamfered portion (16A) of the blade αQ communicates with the through holes (to) at appropriate intervals in the circumferential direction. Then, form six (6) blade grooves αη, and form an oil hole 〇81 extending from the vicinity of the blade αQ on the outer surface of the tap body q to the blade groove α,
A chip breaker (■) is formed on the cutting edge surface 4 of the 6-blade α6. 4 is a rotary valve, and the upper end shaft part (22
A) is fixed to the tapping holder, and the large diameter hole (22B) formed on the lower surface fits into the upper end of the tap body α, and the freezing dog groove (2
20), a pulp body @ forming an L-shaped oil passageway (22D), an annular body (to) rotatably fitted onto the pulp body (2) and covering the annular groove (22c); It consists of a snap ring (to) that supports the annular body (to) so that it does not shift, an O-ring holder, and an outlet that protrudes from the annular body (to). 4 is a lubricating oil nozzle for supplying lubricating oil from above the workpiece (1) toward the thread groove (7); (to) is the screw for fixing the tap.

以下、上記構成に基づいてタッピング工作法金説明する
。第１図に示す状態はタップ（６１（８１を矢印囚方向
へ回転させて切削している途中の状態を示すものであっ
て、ポンプの作動により孔（３）内は負圧伏急にされ、
ノズル翰から被加工物（１）の上面に噴出させられた潤
滑油はタップ（６）　（８）とねじ溝（７）との間の間
隙内に入り込んだ後、細穴（ト）および刃溝αηを介し
て孔（３）内の下部に入り、さらに貫通大曲を介して上
方へ吸引され、外部へ排出されるものである。一方、切
刃面ＱＩＪで切削されたチップＱｌｌは第４図に示すご
とくチップブレーカ（１）に当たって小さな曲率半径で
曲げられ、これによってそのチップ（６）は折られ、小
片チップ（ＩＩＡ）となる。この小片チップＣＩＩＡ）
は上記した潤滑油の流れに乗って貫通穴口を通り、外部
へ排出される。The tapping method will be explained below based on the above configuration. The state shown in Figure 1 shows the state in which the tap (61 (81) is being rotated in the direction of the arrow for cutting, and the inside of the hole (3) is suddenly under negative pressure due to the operation of the pump. ,
The lubricating oil jetted from the nozzle wing onto the top surface of the workpiece (1) enters the gap between the tap (6) (8) and the thread groove (7), and then enters the small hole (T) and the blade. It enters the lower part of the hole (3) through the groove αη, is sucked upward through the large penetrating bend, and is discharged to the outside. On the other hand, the chip Qll cut by the cutting surface QIJ hits the chip breaker (1) and is bent with a small radius of curvature as shown in Fig. 4, thereby breaking the chip (6) and turning it into a small chip (IIA). . This small chip CIIA)
The lubricating oil flows through the through hole and is discharged to the outside.

本発明の第２の実施例を第５図に基づいて説明する。こ
の実施例では、被加工物（１）上に＠置されると共に上
板部の貫通穴（３１がタップ本体Ｃ１４１に遊嵌合する
油溜め用ボックスβＢｔ−配設し、そのボックスｔａｚ
内に供給管嫂を介して潤滑油を供給するポンプ（４図示
せず）を設けたものであって、それ以外は第１の実施例
とほぼ同様であるので説明を省略する。なお□は０りン
グである。A second embodiment of the present invention will be described based on FIG. In this embodiment, an oil reservoir box βBt is placed on the workpiece (1) and has a through hole (31) loosely fitted to the tap body C141 in the upper plate, and the box taz
A pump (4 not shown) for supplying lubricating oil through a supply pipe is provided inside, and the rest is substantially the same as the first embodiment, so a description thereof will be omitted. Note that □ is a 0 ring.

上記実施例によれば、供給管１３３１を介してボックス
＋３２内に供給された潤滑油は刃αＱとねじ溝（７〕と
の間の間隙から孔（３）内に入カ込み、小片チップ（Ｉ
ＬＡ）を貫通穴〇５を介して外部へ排出するものである
。According to the above embodiment, the lubricating oil supplied into the box +32 through the supply pipe 1331 enters the hole (3) through the gap between the blade αQ and the thread groove (7), and the small chip ( I
LA) is discharged to the outside through the through hole 〇5.

発明の効果 以上述べたことく本発明のタッピング工作法およびその
装置によれば、切削したチップをチップブレーカで小さ
く折って小片チップを形成し、その小片チップをタップ
の中心部の貫通穴を介して外部へ排出するものであるか
ら、従来のようにチップをタップとねじ溝との間にかみ
込むおそれがない。したがって連続してねじ溝を形成す
ることができ、短時間でねじ穴を完成させることができ
るものである。Effects of the Invention As described above, according to the tapping method and device of the present invention, a cut chip is broken into small pieces with a chip breaker to form a small chip, and the small chip is inserted through the through hole in the center of the tap. Since the tip is discharged outside, there is no risk of the tip getting caught between the tap and the thread groove as in the conventional case. Therefore, thread grooves can be formed continuously, and threaded holes can be completed in a short time.

【図面の簡単な説明】[Brief explanation of drawings]

第１図〜第４図は本究明の第１の実施例を示し、８１図
は縦断面図、第２図はタップの平面図、第３図はタップ
の底面図、第４図は切削状態を示す要部の横断面図であ
る。第５図は本発明の第２の実施例を示す概略縦断面図
である。第６図（ａｔ〜（ｄ）はタッピングの手順を示
す概略図、第７図はチップの生長火急を示す縦断面図、
第８図はチップ盆かみ込んだ状態を示す要部の拡大縦断
面図である。 （６）・・・２番タップ、（７）・・・ねじ溝、（８）
・・・３番タップ、（ロ）・・・チップ、　（ＩＩＡ）
・・・小片チップ、α４・・・タップ本体、（ト）・・
・貫通穴、α６・・・刃、（１６Ａ）・・・食付き部、
αη・・・刃溝、（ト）・・・細穴、四・・・切刃面、
■・・・チップブレーカ、３１）・・・ロータリバルブ
、翰・・・排出口、翰・・・潤滑油ノズル、■・・・タ
ップ固定用ねじ、ｌ３２１・・・ボックス代理人　　　
　森　　　本　　　義　　　弘第４図Figures 1 to 4 show the first embodiment of this research, Figure 81 is a longitudinal sectional view, Figure 2 is a plan view of the tap, Figure 3 is a bottom view of the tap, and Figure 4 is the cutting state. FIG. FIG. 5 is a schematic vertical sectional view showing a second embodiment of the present invention. FIG. 6(at) to (d) are schematic diagrams showing the tapping procedure, FIG. 7 is a longitudinal cross-sectional view showing the growth rate of the chip,
FIG. 8 is an enlarged vertical cross-sectional view of the main part showing the state in which the chip tray is bitten. (6)...No. 2 tap, (7)...Thread groove, (8)
...3rd tap, (b)...chip, (IIA)
...Small chip, α4...Tap body, (G)...
・Through hole, α6...blade, (16A)...chamfered part,
αη...Blade groove, (G)...Small hole, 4...Cutting surface,
■...Chip breaker, 31)...Rotary valve, Kanji...Discharge port, Kanji...Lubricating oil nozzle, ■...Tap fixing screw, l321...Box agent
Yoshihiro MorimotoFigure 4

Claims (1)

【特許請求の範囲】 １、タップ本体の中心部にチップ排出用貫通穴を形成し
、刃の食付き部に周方向適当間隔おきに上記貫通穴と連
通する刃溝を形成し、タップ本体外周面の刃近傍から刃
溝にたっする油穴を形成し、各刃の切刃面にチップブレ
ーカを形成したタップをねじ穴にあてがい、ねじ穴に潤
滑油を供給し、上記貫通穴を負圧状態にし、タップを回
転させ、それによって各切刃面で切削したチップをチッ
プブレーカで折って小片チップを形成し、その小片チッ
プを潤滑油とともに貫通穴を介して外部へ排出すること
を特徴とするタッピング工作法。 ２、回転駆動させられるタッピングホルダにロータリバ
ルブを介してタップを固定し、ねじ穴に潤滑油を供給す
る潤滑油供給装置を設け、ロータリバルブおよびタップ
の中心に形成した貫通穴を介してねじ穴から小片チップ
を含む潤滑油を吸引する吸引装置を設けたことを特徴と
するタッピング装置。[Scope of Claims] 1. A through hole for chip ejection is formed in the center of the tap body, and blade grooves communicating with the through hole are formed at appropriate circumferential intervals in the chamfered portion of the blade, and the outer circumference of the tap body is An oil hole is formed that drips into the blade groove from near the blade on the face, and a tap with a chip breaker formed on the cutting edge of each blade is applied to the screw hole, lubricating oil is supplied to the screw hole, and negative pressure is applied to the through hole. condition, the tap is rotated, the chips cut by each cutting surface are broken by a chip breaker to form small chips, and the small chips are discharged to the outside through a through hole along with lubricating oil. Tapping method. 2. A tap is fixed to a rotationally driven tapping holder via a rotary valve, and a lubricating oil supply device is installed to supply lubricating oil to the threaded hole, and the threaded hole is fixed through a rotary valve and a through hole formed in the center of the tap. A tapping device characterized by being provided with a suction device that sucks lubricating oil containing small chips from the tip.
JP59257167A 1984-12-04 1984-12-04 Tapping work and apparatus thereof Pending JPS61136725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59257167A JPS61136725A (en) 1984-12-04 1984-12-04 Tapping work and apparatus thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59257167A JPS61136725A (en) 1984-12-04 1984-12-04 Tapping work and apparatus thereof

Publications (1)

Publication Number Publication Date
JPS61136725A true JPS61136725A (en) 1986-06-24

Family

ID=17302619

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59257167A Pending JPS61136725A (en) 1984-12-04 1984-12-04 Tapping work and apparatus thereof

Country Status (1)

Country Link
JP (1) JPS61136725A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007678A1 (en) * 1990-10-29 1992-05-14 Thomas John Ryan Apparatus and method for stripping and tapping cylinder heads for helicoils
WO2008068816A1 (en) * 2006-11-30 2008-06-12 Osg Corporation Tap
JP2008142843A (en) * 2006-12-11 2008-06-26 Osg Corp Tap
US7553114B2 (en) 2001-04-30 2009-06-30 Sandvik Intellectual Property Ab Thread cutting tap and a method of its manufacture
CN102773570A (en) * 2011-05-12 2012-11-14 喜利得股份公司 Method for creating an inner thread as well as a combination of a thread cutter and a body
US20170136555A1 (en) * 2013-05-28 2017-05-18 Allied Machine & Engineering Corp. Vacuum Drilling System and Methods

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992007678A1 (en) * 1990-10-29 1992-05-14 Thomas John Ryan Apparatus and method for stripping and tapping cylinder heads for helicoils
US7553114B2 (en) 2001-04-30 2009-06-30 Sandvik Intellectual Property Ab Thread cutting tap and a method of its manufacture
JP4522451B2 (en) * 2006-11-30 2010-08-11 オーエスジー株式会社 Tap
KR100924976B1 (en) * 2006-11-30 2009-11-04 오에스지 가부시키가이샤 Tap
JPWO2008068816A1 (en) * 2006-11-30 2010-03-11 オーエスジー株式会社 Tap
WO2008068816A1 (en) * 2006-11-30 2008-06-12 Osg Corporation Tap
US8147343B2 (en) 2006-11-30 2012-04-03 Osg Corporation Tap
DE112006002713B4 (en) * 2006-11-30 2020-08-13 Osg Corporation Taps
JP2008142843A (en) * 2006-12-11 2008-06-26 Osg Corp Tap
CN102773570A (en) * 2011-05-12 2012-11-14 喜利得股份公司 Method for creating an inner thread as well as a combination of a thread cutter and a body
US9186739B2 (en) 2011-05-12 2015-11-17 Hilti Aktiengesellschaft Method for creating an inner thread as well as a combination of a thread cutter and a body having a cutout
US20170136555A1 (en) * 2013-05-28 2017-05-18 Allied Machine & Engineering Corp. Vacuum Drilling System and Methods
US10005138B2 (en) * 2013-05-28 2018-06-26 Allied Machine & Engineering Corp. Vacuum drilling system and methods

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