JPH04152020A - Screw machining tool and screw machining method - Google Patents
Screw machining tool and screw machining methodInfo
- Publication number
- JPH04152020A JPH04152020A JP27546890A JP27546890A JPH04152020A JP H04152020 A JPH04152020 A JP H04152020A JP 27546890 A JP27546890 A JP 27546890A JP 27546890 A JP27546890 A JP 27546890A JP H04152020 A JPH04152020 A JP H04152020A
- Authority
- JP
- Japan
- Prior art keywords
- tool
- screw
- thread
- cutting
- holding
- 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
Links
- 238000003754 machining Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title abstract description 5
- 238000003672 processing method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 235000019589 hardness Nutrition 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Landscapes
- Turning (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、被加工物にネジを形成するネジ加工工具およ
びネジ加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a thread processing tool and a thread processing method for forming a thread on a workpiece.
（従来の技術）
従来、ネジを成形する場合には、タップ、ダイス、ネジ
旋削、転造などによっていた。(Prior Art) Conventionally, screws have been formed using taps, dies, screw turning, rolling, etc.
例えば、タップ、ダイスを用いる場合は、ネジ径に対し
、それぞれ適合した刃物径を使用し、工具回転軸がネジ
中心と同一になるようにし、また。For example, when using a tap or die, use a blade diameter that matches the screw diameter, and make sure that the tool rotation axis is the same as the screw center.
旋削、転造による場合は、それぞれ旋盤、転造装置を使
用していた。For turning and rolling, lathes and rolling equipment were used, respectively.
（発明が解決しようとする課ＩＩ）
しかしながら、タップ加工においては、必要とするネジ
径に合せて、何種類もあるタップのなかから適切なネジ
径のタップを選定する必要があリ、その選定作業が煩雑
である。また、タップの刃先磨耗などにより１つのタッ
プの使用回数が限られ効率が悪い。(Problem II to be solved by the invention) However, in tap processing, it is necessary to select a tap with an appropriate thread diameter from among many types of taps according to the required thread diameter. The work is complicated. Furthermore, the number of times one tap can be used is limited due to wear of the tip of the tap, resulting in poor efficiency.
一方、旋削によるネジ加工においては、タップに比べ加
工径の自由度は多いが、旋削に適した加工物の形状に制
限があるという問題点がある。On the other hand, in thread machining by turning, there is a greater degree of freedom in the machining diameter than in the case of a tap, but there is a problem in that there are restrictions on the shape of the workpiece that is suitable for turning.
そこで本発明は、このような従来装置の問題点を解消し
、ネジ径および被加工物の形状にかかわらず、工具の経
済性、加工自由度を改善したネジ加工工具およびネジ加
工方法を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, the present invention provides a thread processing tool and a thread processing method that solves the problems of the conventional device and improves the economical efficiency of the tool and the degree of freedom of processing, regardless of the thread diameter and the shape of the workpiece. The purpose is to
［発明の構成〕
（課題を解決するための手段）
本発明は、工具半径方向外周に軸方向に沿って１段以上
の切刃を備え、その切刃部に１つ以上の軸方向にそった
切り欠き部を設けたネジ加工工具が保持工具の軸に対し
て偏心して取り付けられており、この保持工具と同軸に
接するように接合した他の保持工具により、同時３軸制
御の可能な装置の主軸の軸端部に接合されたネジ加工工
具であり、このネジ加工工具をネジ形状に沿ってネジ半
径方向のネジ深さに回転させ、被加工物に切込ませた状
態で、所定のネジピッチを確保しながら切刃を送ること
によりネジを形成するようにしたものである。[Structure of the Invention] (Means for Solving the Problems) The present invention includes one or more cutting edges along the axial direction on the outer periphery of the tool in the radial direction, and one or more stages of cutting edges along the axial direction. A device in which a screw machining tool with a notch is mounted eccentrically with respect to the axis of the holding tool, and other holding tools connected coaxially with this holding tool allow for simultaneous three-axis control. This is a thread processing tool that is connected to the shaft end of the main shaft of the machine.This thread processing tool is rotated along the thread shape to the thread depth in the radial direction of the thread, and when cut into the workpiece, the specified The thread is formed by feeding the cutting blade while ensuring the thread pitch.
（作用）
これにより、１つのネジ加工工具で、加工物の内径外径
を問わずネジ加工ができので、加工時間の短縮ができ、
経済性が向上する。(Function) As a result, a single thread processing tool can machine threads regardless of the inner or outer diameter of the workpiece, reducing processing time.
Economic efficiency improves.
（実施例）
以下、添付図面を参照しながら、本発明の実施例を詳細
に説明する。(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図は１本発明によるネジ加工工具を用いた内径ネジ
加工方法の一例を示す斜視図である。FIG. 1 is a perspective view showing an example of an internal thread processing method using a thread processing tool according to the present invention.
同図において、１段以上の切刃を備え、その−部を軸方
向に切り欠き部を設は切刃先端Ｃを形成するネジ加工工
具１が、保持工具２の軸に対して偏心量ｅはどずれて適
宜な方法で嵌合または取り付けられており、この保持工
具２と同軸に接するように接合した保持工具３により、
同時３軸制御の可能な装置またはＮＣ工作機械（例えば
マシニングセンタなど）などの主軸４の軸端部に接合さ
れている。In the same figure, a screw machining tool 1 is provided with one or more stages of cutting blades and has a notch in the axial direction at the negative part to form a cutting blade tip C. The holding tool 3 is fitted or attached in an appropriate manner in a misaligned manner, and the holding tool 3 is coaxially connected to the holding tool 2.
It is joined to the shaft end of a main shaft 4 of a device capable of simultaneous three-axis control or an NC machine tool (for example, a machining center).
また、同時３軸制御の可能な装置またはＮＣ工作機械な
どのテーブル上には、内周にネジ加工面５を施し得る形
状の部位を持った加工物６が適宜な方法により取り付け
られている（図示せず）。Furthermore, on the table of a device capable of simultaneous three-axis control or an NC machine tool, a workpiece 6 having a portion shaped to allow threading on the inner periphery 5 is mounted by an appropriate method ( (not shown).
なお、保持工具２および保持工具３の回転軸は、主軸４
の回転軸８の延長上に位置する。Note that the rotating shaft of the holding tool 2 and the holding tool 3 is the main shaft 4.
It is located on the extension of the rotation axis 8 of.
第２図にネジ加工工具１と保持工具２の組立状態の一例
を示す。FIG. 2 shows an example of an assembled state of the screw processing tool 1 and the holding tool 2.
同図（ａ）は、工具軸からみた側面図を示し、同図（ｂ
）は、ネジ加工工具１と保持工具２の組立状態での断面
図を示し、同図（ｃ）は、ネジ加工工具１と形成される
ネジとの関係を、工具の回転軸方向からみた断面図であ
る。Figure (a) shows a side view seen from the tool axis, and figure (b) shows a side view as seen from the tool axis.
) shows a cross-sectional view of the screw processing tool 1 and the holding tool 2 in an assembled state, and FIG. It is a diagram.
これらの図において、ネジ加工工具１は、保持工具２に
形成された穴部２ａに本体一部を嵌め込み。In these figures, a screw machining tool 1 has a main body partially fitted into a hole 2a formed in a holding tool 2.
止めネジ７により固定されおり、このとき、ネジ加工工
具１の中心ＣＣは、保持工具２の中心と同一の工具回転
中心ＲＣと偏心量ｅ離れている。It is fixed by a set screw 7, and at this time, the center CC of the screw processing tool 1 is separated from the tool rotation center RC, which is the same as the center of the holding tool 2, by an eccentric amount e.
以上の構成で、保持工具２，３に偏心して取り付けられ
たネジ加工工具１の切刃先端Ｃは工具回転中心ＲＣを中
心とする旋回半径ｒを持ち、この旋回半径ｒは、保持工
具２の半径りよりも大きく、ネジ加工工具１の切刃先端
Ｃは保持工具２よりも突出した位置となる。With the above configuration, the cutting edge tip C of the screw processing tool 1 eccentrically attached to the holding tools 2 and 3 has a turning radius r centered on the tool rotation center RC, and this turning radius r is equal to the turning radius r of the holding tool 2. The cutting edge C of the screw processing tool 1 is located at a position that protrudes from the holding tool 2.
ここで、旋回半径ｒと偏心量ｅ、ネジ加工工具半径ｆの
関係を下記に示す。Here, the relationship between the turning radius r, the eccentricity e, and the thread machining tool radius f is shown below.
ｒ＝ｅ＋ｆ ・・・（１）
そして、主軸４に保持工具を介して取り付けられたネジ
加工工具１の切刃先端Ｃを、加工するネジ谷径ｄにあわ
せ、主軸４を回転させ切刃先端Ｃと、ネジ谷径ｄの接点
の軌跡が、ネジ−回転当りネジピッチｐに相当するよう
に、ネジ加工工具１を同時３軸制御可能な装置により、
ら旋運動させる。r=e+f...(1) Then, adjust the cutting edge tip C of the screw processing tool 1 attached to the main spindle 4 via the holding tool to the thread root diameter d to be machined, and rotate the main spindle 4 to adjust the cutting edge tip. With a device capable of simultaneous three-axis control of the screw processing tool 1, so that the locus of the contact point between C and the thread root diameter d corresponds to the screw pitch p per screw rotation.
Make a spiral movement.
ところで、ネジ加工工具１の中心ＣＣは、保持工具２の
中心と同一の工具回転中心ＲＣと偏心量ｅ離れているか
ら、切刃先端Ｃの加工物６への切込み深さＵとネジ谷探
さＶとの関係は、下記に示すようになる。By the way, since the center CC of the screw processing tool 1 is eccentrically e away from the tool rotation center RC, which is the same as the center of the holding tool 2, the depth of cut U of the cutting edge C into the workpiece 6 and the screw root search are The relationship with V is as shown below.
Ｕ≦Ｖ ・・・（２）
本発明によるネジ加工方法に使用する、ネジ加工工具１
の切刃先端Ｃの構造を第３図に示す。U≦V (2) Screw processing tool 1 used in the screw processing method according to the present invention
The structure of the cutting edge tip C is shown in Fig. 3.
ネジ加工工具ｌは、工具回転中心ＲＣを中心として回転
する。これにより、ネジの切込み深さＵを持つ切刃先端
Ｃは、ネジ山半径ｇと切込み深さＵを合せた長さをを持
って運動し、この運動による軌跡がネジを形成する。The screw processing tool 1 rotates around a tool rotation center RC. As a result, the tip C of the cutting blade having the cutting depth U of the thread moves with a length equal to the sum of the thread radius g and the cutting depth U, and the locus of this movement forms the thread.
また、ネジ加工工具１は、中心ＣＣを軸として、切刃部
分を角度方向にずらすことが可能である。Moreover, the thread processing tool 1 can shift the cutting edge portion in the angular direction about the center CC.
これにより、当初の切刃先端Ｃは、再研摩後充分なる切
刃機能果すことが可能な程度の再研摩代Ｈを持ち、次切
刃先端Ｃ′に移行することができる。As a result, the initial cutting edge tip C has a re-sharpening allowance H that is sufficient to perform a sufficient cutting blade function after re-sharpening, and can be transferred to the next cutting edge tip C'.
このとき、研摩代Ｈは、ネジ加工工具１の中心ＣＣより
、上述した切刃機能を充分みたす角度ＲＡによって定め
られる。そして、切刃再研摩後、上述のような操作を適
宜行なうことにより、切刃先端は、Ｃ′、Ｃｎへと移行
していくが、加工物６との接触位置は、第３図に示す当
初の切刃先端Ｃと同一の位置に調整され固定される。At this time, the grinding allowance H is determined from the center CC of the thread processing tool 1 by an angle RA that sufficiently satisfies the above-mentioned cutting blade function. After re-sharpening the cutting edge, the tip of the cutting edge moves to C' and Cn by appropriately performing the operations described above, but the contact position with the workpiece 6 is as shown in FIG. It is adjusted and fixed at the same position as the original cutting edge tip C.
また、ネジ加工工具１の中心ＣＣは゛、保持工具２の中
心と同一の工具回転中心ＲＣと偏心量θ離して取り付け
ることにより、切刃回転方向ｎと反対部分が、加工物６
との逃げＲを実質的に形成することになる。In addition, the center CC of the screw processing tool 1 is mounted with an eccentric amount θ apart from the tool rotation center RC, which is the same as the center of the holding tool 2, so that the part opposite to the cutting blade rotation direction n is
This essentially forms a relief R between the two sides.
これにより、逃げ面は、ネジ加工工具１の切刃の外径面
が、代行することとなり、従来装置のタップなどで特殊
装置を使用して行なっていた、２番取りの作業（仕上作
業）が不要となる。As a result, the outer diameter surface of the cutting edge of the screw processing tool 1 takes over the flank surface, and the second cutting work (finishing work), which was previously performed using special equipment such as a tap, becomes unnecessary.
このようにして、本実施例による、ネジ加工工具は、同
時３軸制御が可能な装置またはＮＣ工作機械を用い、同
一工具で、内外径を問わず、また。In this way, the screw machining tool according to this embodiment can be manufactured using a device capable of simultaneous three-axis control or an NC machine tool, and can be used with the same tool regardless of the inner or outer diameter.
複数種のネジ加工が可能となる。It is possible to process multiple types of screws.
また、切刃再研摩毎に取付角度をずらしていくことによ
り、従来装置に比べ、多くの研摩代を確保しており、一
方、切刃回転方向ｎと反対部分が、加工物６との逃げＲ
を実質的に形成することにより、従来装置のタップなど
で特殊装置を使用して行なっていた、２番取りの作業が
不要となるため、工具寿命と経済性が向上する。In addition, by shifting the mounting angle each time the cutting blade is re-sharpened, a larger amount of grinding allowance is secured compared to conventional equipment. R
By substantially forming the hole, there is no need for a second cut, which was performed using a special device such as a tap in the conventional device, thereby improving tool life and economic efficiency.
第４図に本発明によるネジ加工工具の他の実施例を示す
。FIG. 4 shows another embodiment of the screw machining tool according to the present invention.
第４図（、）は、１段以上の切刃を備え、その一部を軸
方向に切り欠き部を持つ切刃先端Ｃを１８０度相対した
位置に同様に形成したものである。FIG. 4(,) shows a cutter having one or more stages of cutting blades, in which cutting blade tips C having a notch in the axial direction are similarly formed at positions 180 degrees apart from each other.
これにより、一方の研摩代がなくなったとしても、１８
０度相対した位置に形成した切刃部により、工具寿命と
経済性が向上させることができる。As a result, even if the polishing allowance on one side is eliminated, 18
The cutting edges formed at 0 degrees opposite positions can improve tool life and economy.
第４図（ｂ）は、１段以上の切刃を備え、その一部を軸
方向に深さを変えた切り欠き部を持つ切刃先端Ｃａ、Ｃ
ｂを２つ以上形成し１８０度相対した位置に同様に形成
したものである。Fig. 4(b) shows the tips of the cutting blades Ca and C, which are equipped with one or more stages of cutting blades and have a notch portion with a partially changed depth in the axial direction.
Two or more b are formed and similarly formed at positions 180 degrees apart.
これにより、２種類以上の切込み深さを選択することが
できる６
第４図（ｃ）は、切刃を１段にすることで、同時３軸制
御可能な装置の移動量を調整することによりネジピッチ
を変化させることができる。As a result, two or more types of cutting depth can be selected.6 Figure 4 (c) shows that by setting the cutting blade to one stage, the amount of movement of the device that can simultaneously control three axes can be adjusted. Thread pitch can be changed.
また、第５図に切刃先端にスローアウェイ式超硬切刃を
装着した例を示す。Moreover, FIG. 5 shows an example in which a throw-away type carbide cutting blade is attached to the tip of the cutting blade.
１段以上の切刃を備え、その一部を軸方向に切り欠き部
を設は切刃先端Ｃを形成するネジ加工工具１に、スロー
アウェイ式超硬切刃１１を切刃固定ネジ１２により装着
することにより、硬度の違う加工物にネジを形成するこ
とが可能となる。A throw-away type carbide cutting blade 11 is attached to a screw machining tool 1 having one or more stages of cutting blades, a part of which has a notch in the axial direction to form a cutting blade tip C, using a cutting blade fixing screw 12. By attaching it, it becomes possible to form screws on workpieces with different hardnesses.
なお、スローアウェイ式超硬切刃を切刃固定ネジ１２に
より装着する方法は、第５図に示した、それぞれの実施
例に適応することできるこはいうまでもない。It goes without saying that the method for mounting the indexable carbide cutting blade using the cutting blade fixing screw 12 can be applied to each of the embodiments shown in FIG.
このようにして、加工物の材質に合せ、工具半径方向外
周に施す切刃の数を選択でき、工具軸方向の切刃の数も
加工物ネジ部の長さによって適宜に形成すれば、ネジ加
工工具の切刃部の長さ分、加工時間の短縮が図れる。In this way, the number of cutting edges on the outer circumference of the tool in the radial direction can be selected according to the material of the workpiece, and if the number of cutting edges in the tool axis direction is also formed appropriately depending on the length of the threaded part of the workpiece, it is possible to The machining time can be reduced by the length of the cutting edge of the machining tool.
［発明の効果］
以上説明したように、本発明によれば、加工物、ネジ径
および形状にかかわらずネジ加工を効率よく行なうこと
が可能となる。[Effects of the Invention] As explained above, according to the present invention, thread processing can be performed efficiently regardless of the workpiece, thread diameter, and shape.
第１図は本発明の一実施例にかかるネジ加工装置の構成
を示す構成図、第２図（ａ）は工具軸がらみた側面図を
示し、同図（ｂ）は、ネジ加工工具ｌと保持工具２の組
立状態を示す断面図、第２図（Ｃ）はネジ加工工具１と
形成されるネジとの関係を工具の回転軸方向からみた断
面図、第３図はネジ加工工具の切刃先端Ｃの構造を説明
する説明図、第４図は本発明によるネジ加工工具の他の
実施例を示す構成図、第５図に切刃先端にスローアウェ
イ式超硬切刃を装着した例を示す構成図である。
■・・・ネジ加工工具、２，３・・・保持工具、４０・
・・主軸。FIG. 1 is a configuration diagram showing the configuration of a screw machining device according to an embodiment of the present invention, FIG. 2 (a) is a side view from the perspective of the tool axis, and FIG. 2(C) is a sectional view showing the assembled state of the holding tool 2, FIG. An explanatory diagram illustrating the structure of the blade tip C, FIG. 4 is a configuration diagram showing another embodiment of the screw processing tool according to the present invention, and FIG. 5 is an example in which a throw-away type carbide cutting blade is attached to the cutting blade tip. FIG. ■...Screw processing tool, 2, 3...Holding tool, 40.
...Main axis.
Claims (2)
、工具半径方向外周に軸方向に沿って１段以上の切刃を
備え、その切刃部に１つ以上の軸方向にそった切り欠き
部を設けたネジ加工工具が、保持工具の軸に対して偏心
して取り付けられており、この保持工具と同軸に接合し
た他の保持工具により、同時３軸制御の可能な装置の主
軸の軸端部に接合されていることを特徴とするネジ加工
工具。(1) A thread machining tool that forms a thread in a workpiece, which has one or more cutting edges along the axial direction on the outer periphery of the tool in the radial direction, and has one or more cuts along the axial direction on the cutting edge. A screw machining tool with a notch is installed eccentrically with respect to the axis of the holding tool, and another holding tool connected coaxially with this holding tool allows simultaneous three-axis control of the main axis of the device. A screw processing tool characterized by being joined at the end.
刃を備え、その切刃部に１つ以上の軸方向にそった切り
欠き部を設けたネジ加工工具が、保持工具の軸に対して
偏心して取り付けられており、この保持工具と同軸に接
合した他の保持工具により、同時３軸制御の可能な装置
の主軸の軸端部に接合されたネジ加工工具を、被加工物
に切込ませた状態で、所定のネジピッチを確保しながら
切刃を送ることによりネジを形成することを特徴とした
ネジ加工方法。(2) A screw machining tool is equipped with one or more cutting edges along the axial direction on the outer periphery of the tool in the radial direction, and one or more notches along the axial direction are provided in the cutting edge. This holding tool is mounted eccentrically with respect to the shaft, and other holding tools connected coaxially with this holding tool allow the screw machining tool connected to the shaft end of the main spindle of a device capable of simultaneous three-axis control to be machined. A thread processing method characterized by forming a thread by feeding a cutting blade while ensuring a predetermined thread pitch while cutting into an object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27546890A JPH04152020A (en) | 1990-10-16 | 1990-10-16 | Screw machining tool and screw machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27546890A JPH04152020A (en) | 1990-10-16 | 1990-10-16 | Screw machining tool and screw machining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04152020A true JPH04152020A (en) | 1992-05-26 |
Family
ID=17555963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27546890A Pending JPH04152020A (en) | 1990-10-16 | 1990-10-16 | Screw machining tool and screw machining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04152020A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2006009113A1 (en) * | 2004-07-16 | 2008-05-01 | 三星ダイヤモンド工業株式会社 | Cutter wheel and manufacturing method thereof, manual scribing tool and scribing device |
| EP1995011A1 (en) * | 2007-05-25 | 2008-11-26 | Johs. Boss GmbH & Co. KG | Device for machining a profile and holder and milling tool therefor |
| JP2017517404A (en) * | 2014-06-13 | 2017-06-29 | ヴァルター アーゲー | Thread milling |
-
1990
- 1990-10-16 JP JP27546890A patent/JPH04152020A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2006009113A1 (en) * | 2004-07-16 | 2008-05-01 | 三星ダイヤモンド工業株式会社 | Cutter wheel and manufacturing method thereof, manual scribing tool and scribing device |
| US8707842B2 (en) | 2004-07-16 | 2014-04-29 | Mitsuboshi Diamond Industrial Co., Ltd. | Cutter wheel, manufacturing method for same, manual scribing tool and scribing device |
| US8881633B2 (en) | 2004-07-16 | 2014-11-11 | Mitsuboshi Diamond Industrial Co., Ltd. | Cutter wheel, manufacturing method for same, manual scribing tool and scribing device |
| EP1995011A1 (en) * | 2007-05-25 | 2008-11-26 | Johs. Boss GmbH & Co. KG | Device for machining a profile and holder and milling tool therefor |
| JP2017517404A (en) * | 2014-06-13 | 2017-06-29 | ヴァルター アーゲー | Thread milling |
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