JP2001087902A - Outer surface turning method for work of thin pipe - Google Patents
Outer surface turning method for work of thin pipeInfo
- Publication number
- JP2001087902A JP2001087902A JP26175199A JP26175199A JP2001087902A JP 2001087902 A JP2001087902 A JP 2001087902A JP 26175199 A JP26175199 A JP 26175199A JP 26175199 A JP26175199 A JP 26175199A JP 2001087902 A JP2001087902 A JP 2001087902A
- Authority
- JP
- Japan
- Prior art keywords
- work
- vibration
- thin pipe
- turning
- workpiece
- 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.)
- Granted
Links
Landscapes
- Turning (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は薄肉パイプ状ワー
クの外面旋削方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for externally turning a thin pipe-like workpiece.
【０００２】[0002]
【従来の技術と発明の解決すべき課題】薄肉パイプを両
端支持旋盤で外面旋削加工する場合、その内部が空洞で
あるため旋盤およびバイトからの振動の影響が大きく、
かつ薄肉パイプ自体の剛性が低いためにびびり振動が発
生しやすくなり、高精度の表面粗度を達成するのは困難
であった。しかも、薄肉パイプのさらなる薄肉化および
長尺化をはかるとその傾向は一層顕著であった。2. Description of the Related Art When thin-walled pipes are externally turned with a lathe supporting both ends, the inside of the pipe is hollow, so the influence of vibration from the lathe and the cutting tool is great.
Moreover, since the rigidity of the thin-walled pipe itself is low, chatter vibration is likely to occur, and it has been difficult to achieve high-precision surface roughness. In addition, when the thickness of the thin-walled pipe is further reduced and lengthened, the tendency becomes more remarkable.
【０００３】そこで、このような問題を解決するため
に、その内側からバックアップして旋削時のびびり振動
を抑制する必要がある。ワークの内径が全長にわたって
均一な薄肉パイプ状ワークの場合、びびり振動抑制用の
防振具としては、従来、ワークの内径とほぼ等しくかつ
ワーク内に挿入し得るような外径を有するとともに、外
周面の表面層が弾性材で形成された丸棒状のものが用い
られていた。また、ワークの内径よりも小さな外径を有
する円筒を周方向に複数に分割した形状でかつ外面の表
面層が弾性材で形成された複数の部分円筒状体を、弾性
を有する締結リングで一体に締結したものが用いられて
いた。後者の防振具では、旋削加工時の回転により生じ
る遠心力によって、締結リングの弾性力に抗して全ての
部分円筒状体が径方向外方に移動してワークの内周面に
押し付けられ、これにより旋削加工時のびびり振動を抑
制するようになっている。Therefore, in order to solve such a problem, it is necessary to back up from the inside to suppress chatter vibration during turning. In the case of a thin pipe-shaped work in which the inner diameter of the work is uniform over the entire length, a vibration isolator for suppressing chatter vibration conventionally has an outer diameter that is almost equal to the inner diameter of the work and can be inserted into the work. A round bar having a surface layer made of an elastic material has been used. In addition, a plurality of partial cylindrical bodies each having a shape in which a cylinder having an outer diameter smaller than the inner diameter of the work is divided into a plurality in the circumferential direction and having an outer surface layer formed of an elastic material are integrated with an elastic fastening ring. Was used. With the latter, all the partial cylindrical bodies move radially outward against the elastic force of the fastening ring and are pressed against the inner peripheral surface of the work by centrifugal force generated by rotation during turning. Thereby, chatter vibration during turning is suppressed.
【０００４】しかしながら、薄肉パイプ状ワークがその
両端部に縮径部を有する場合、上述した２種類の防振具
をワーク内に挿入することはできず、外面旋削加工時の
びびり振動を抑制することができないのが現状である。However, when the thin pipe-shaped work has reduced diameter portions at both ends, the above-described two types of vibration isolator cannot be inserted into the work, and chatter vibration during external surface turning is suppressed. It is not possible at present.
【０００５】この発明の目的は、上記実情に鑑みてなさ
れたものであって、両端部に縮径部を有する薄肉パイプ
状ワークに外面旋削加工を施すさいにも、びびり振動の
発生を抑制することができる外面旋削加工方法を提供す
ることにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and suppresses the occurrence of chatter vibration even when an external surface turning process is performed on a thin pipe-shaped work having a reduced diameter portion at both ends. It is an object of the present invention to provide a method of external turning that can be performed.
【０００６】[0006]
【課題を解決するための手段と発明の効果】この発明に
よる薄肉パイプ状ワークの外面旋削方法は、薄肉パイプ
状ワーク内に、ワークの長さ方向に長くかつ外周面の表
面層が弾性材で形成された複数のびびり振動抑制用丸棒
状防振具を、薄肉パイプ状ワークの内周面全体に沿って
連続して並ぶように入れ、この状態でワークの外面に旋
削加工を施すことを特徴とするものである。Means for Solving the Problems and Effects of the Invention According to the present invention, a method for externally turning a thin pipe-like work is provided in a thin pipe-like work. A plurality of formed round bar vibration isolators for chatter vibration suppression are inserted continuously along the entire inner peripheral surface of a thin-walled pipe-shaped work, and in this state, the outer surface of the work is subjected to turning. It is assumed that.
【０００７】この発明の方法によれば、旋削加工時の回
転により生じる遠心力によって、全ての防振具が、薄肉
パイプ状ワークの内周面全体に沿って連続して並ぶよう
に、ワークの内周面に押し付けられてバックアップ力が
発生し、これにより旋削加工時のびびり振動の発生が確
実に抑制される。[0007] According to the method of the present invention, the centrifugal force generated by the rotation during the turning operation causes the vibration isolator to be continuously arranged along the entire inner peripheral surface of the thin-walled pipe-like workpiece. The backup force is generated by being pressed against the inner peripheral surface, and thereby the occurrence of chatter vibration during turning is reliably suppressed.
【０００８】そして、ワークが両端部に縮径部を有する
薄肉パイプ状であっても、各防振具の外径を縮径部の内
径よりも小さくしておけば、各防振具を縮径部を通して
ワーク内に挿入することができ、このようなワークに外
面旋削加工を施すさいにも、びびり振動の発生を抑制す
ることができる。したがって、加工済み製品において高
精度の表面粗度を達成することができる。また、防振具
の外周面の表面層が弾性材で形成されているので、防振
具がワーク内で回転したとしても、防振効果は損なわれ
ず、しかもワーク内への挿入時や外面旋削加工時のワー
ク内周面の傷付きが防止される。また、防振具の数を変
更することにより、内径の異なるワークの外面旋削加工
にも適用可能となる。さらに、ワークを旋盤に着脱する
さい、防振具のための段取り作業を必要とせず、加工中
の段取り作業も不要なため加工の自動化、無人化を容易
に図ることができ、生産性の向上に寄与する。[0008] Even if the work is a thin pipe having a reduced diameter portion at both ends, if the outer diameter of each vibration isolator is made smaller than the inner diameter of the reduced diameter portion, each vibration isolator can be reduced. It can be inserted into the work through the diameter part, and the occurrence of chatter vibration can be suppressed even when such a work is subjected to external turning. Therefore, high-precision surface roughness can be achieved in the processed product. In addition, since the surface layer of the outer peripheral surface of the vibration isolator is made of an elastic material, even if the vibration isolator rotates within the work, the vibration isolating effect is not impaired. The inner peripheral surface of the workpiece during processing is prevented from being damaged. Further, by changing the number of the vibration isolators, the present invention can be applied to external turning of works having different inner diameters. Furthermore, when a workpiece is attached to or detached from a lathe, setup work for vibration isolators is not required, and setup work during machining is not required, so automation of machining and unmanned operation can be easily achieved, improving productivity. To contribute.
【０００９】[0009]
【発明の実施形態】以下、この発明の実施形態を、図面
を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図１および図２は薄肉パイプ状ワークに外
面旋削加工を施す前段階を示し、図３および図４はワー
クに外面旋削加工を施す段階を示す。FIGS. 1 and 2 show a stage before external turning is performed on a thin pipe-shaped work, and FIGS. 3 and 4 show a stage where external turning is performed on the work.
【００１１】図１および図２に示すように、両端部に縮
径部(W1)を有する薄肉パイプ状のワーク(W)に外面旋削
を施す前段階において、いずれか一方の縮径部(W1)を通
して所要数のびびり振動抑制用丸棒状防振具(1)をワー
ク(W)内に挿入する。防振具(1)は、横断面円形の金属製
中実棒状体からなる心棒(2)と、心棒(2)の外周面を被覆
する弾性材(3)よりなる。防振具(1)の長さは、ワーク
(W)における両縮径部(W1)を除いた部分の長さよりも若
干短くなっている。弾性材(3)としては、たとえばゴム
や合成樹脂からなるエラストマーが用いられる。ワーク
(W)内に挿入する防振具(1)の数は、防振具(1)が薄肉パ
イプ状ワーク(W)の内周面全体に沿って連続して並ぶよ
うな数、すなわち全ての防振具(1)をワーク(W)の内周面
に沿って配した場合に、全ての防振具(1)がワーク(W)の
内周面に内接しうるとともに、隣接する防振具(1)どう
しが互いに接するか、あるいは若干の間隔をおいて近接
するような数とするのが好ましい。ワーク(W)内に所要
数の防振具(1)を挿入すると、防振具(1)は重力方向に溜
まる。As shown in FIGS. 1 and 2, one of the reduced diameter portions (W1) is provided before the outer surface turning is performed on the thin pipe-shaped work (W) having the reduced diameter portions (W1) at both ends. ) And insert the required number of round bar vibration isolator (1) for chatter vibration suppression into the work (W). The vibration isolator (1) includes a mandrel (2) made of a solid metal rod having a circular cross section, and an elastic material (3) covering the outer peripheral surface of the mandrel (2). The length of the vibration isolator (1)
(W) is slightly shorter than the length of the portion excluding both reduced diameter portions (W1). As the elastic material (3), for example, an elastomer made of rubber or a synthetic resin is used. work
The number of vibration isolators (1) to be inserted in (W) is such that the vibration isolators (1) are continuously arranged along the entire inner peripheral surface of the thin-walled pipe-shaped work (W), that is, When the anti-vibration device (1) is arranged along the inner peripheral surface of the work (W), all the anti-vibration devices (1) can be inscribed in the inner peripheral surface of the work (W), and It is preferable that the numbers are such that the components (1) are in contact with each other or close to each other at a slight interval. When a required number of vibration isolators (1) are inserted into the work (W), the vibration isolators (1) accumulate in the direction of gravity.
【００１２】ワーク(W)内への所要数の防振具(1)の挿入
が終了すると、図３に示すように、ワーク(W)を、旋盤
における主軸台の主軸(4)先端のチャック(5)と心押し台
のセンタ(6)とにより縮径部(W1)を利用して保持し、こ
の状態でワーク(W)を回転させながらバイト(7)によって
ワーク(W)に外面旋削加工を施す。ワーク(W)が回転する
と、遠心力によりワーク(W)内の全ての防振具(1)が、ワ
ーク(W)内周面に沿って連続して並び、全ての防振具(1)
がワーク(W)の内周面に内接しうるとともに、隣接する
防振具(1)どうしが互いに接した状態でワーク(W)内周面
に押し付けられ（図４参照）、これによりワーク(W)が
バックアップされてびびり振動の発生が抑制される。こ
うして、加工済み製品において高精度の表面粗度を達成
することができる。When the required number of vibration isolators (1) have been inserted into the work (W), the work (W) is moved to the chuck (4) of the headstock (4) of the headstock of the lathe as shown in FIG. (5) and the tailstock center (6) are held by using the reduced diameter part (W1), and in this state, the workpiece (W) is externally turned by the cutting tool (7) while rotating the workpiece (W). Apply processing. When the work (W) rotates, all the vibration isolators (1) in the work (W) are continuously arranged along the inner peripheral surface of the work (W) due to centrifugal force, and all the vibration isolators (1)
Can be inscribed on the inner peripheral surface of the work (W), and the adjacent vibration isolator (1) is pressed against the inner peripheral surface of the work (W) while being in contact with each other (see FIG. 4). W) is backed up and the occurrence of chatter vibration is suppressed. In this way, a highly accurate surface roughness can be achieved in the processed product.
【００１３】上記実施形態においては、防振具(1)の心
棒(2)は、金属製中実棒状体からなるが、金属製中空管
状体からなるものであってもよい。さらに、心棒(2)の
材質は適宜変更可能である。そして、ワーク(W)の材質
および肉厚や加工条件にあわせて防振具(1)の心棒の材
質、形状を変更することによって、遠心力によるバック
アップ力を適宜変更し、びびり振動の発生をより確実に
抑制することができる。In the above embodiment, the mandrel (2) of the vibration isolator (1) is formed of a solid metal rod, but may be formed of a metal hollow tubular body. Further, the material of the mandrel (2) can be appropriately changed. By changing the material and shape of the mandrel of the anti-vibration device (1) according to the material and thickness of the work (W) and the processing conditions, the backup force due to the centrifugal force is appropriately changed to reduce the occurrence of chatter vibration. It can be suppressed more reliably.
【００１４】また、上記実施形態においては、両端部に
縮径部(W1)を有するワーク(W)の外面旋削加工方法につ
いて説明したが、この発明の方法は内径が全長にわたっ
て均一な薄肉パイプ状ワークにも適用可能である。In the above embodiment, the method of externally turning a work (W) having a reduced diameter portion (W1) at both ends has been described. Applicable to work.
【図１】外面旋削加工を施す前段階において薄肉パイプ
状ワーク内に防振具を挿入する状態を示す縦断面図であ
る。FIG. 1 is a longitudinal sectional view showing a state in which a vibration isolator is inserted into a thin pipe-shaped work at a stage before external turning is performed.
【図２】外面旋削加工を施す前段階において薄肉パイプ
状ワーク内に所要数の防振具を挿入した状態を示す横断
面図である。FIG. 2 is a cross-sectional view showing a state in which a required number of vibration isolators have been inserted into a thin-walled pipe-like work before performing external turning.
【図３】外面旋削加工を施す段階を示す縦断面図であ
る。FIG. 3 is a longitudinal sectional view showing a stage of performing external turning.
【図４】外面旋削加工を施す段階を示す横断面図であ
る。FIG. 4 is a cross-sectional view showing a step of performing external turning.
(1)：びびり振動抑制用丸棒状防振具 (3)：弾性材 (W)：薄肉パイプ状ワーク (1): Round bar-shaped vibration isolator for chatter vibration suppression (3): Elastic material (W): Thin pipe-shaped work
───────────────────────────────────────────────────── フロントページの続き (72)発明者 梅津 忠久 愛知県丹羽郡大口町下小口５丁目25番地の １ オークマ株式会社大口工場内 Ｆターム(参考） 3C045 CA07 DA07 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadahisa Umezu 5-25-25 Shimokoguchi, Oguchi-machi, Niwa-gun, Aichi Prefecture 1 Okuma Co., Ltd. Oguchi factory F-term (reference) 3C045 CA07 DA07
Claims (1)
方向に長くかつ外周面の表面層が弾性材で形成された複
数のびびり振動抑制用丸棒状防振具を、薄肉パイプ状ワ
ークの内周面全体に沿って連続して並ぶように入れ、こ
の状態でワークの外面に旋削加工を施すことを特徴とす
る薄肉パイプ状ワークの外面旋削方法。A thin pipe-shaped workpiece is provided with a plurality of chatter-vibration-suppressing round bar-shaped vibration isolators, which are long in the longitudinal direction of the workpiece and whose outer peripheral surface is formed of an elastic material, are provided in the thin pipe-shaped workpiece. An external turning method for a thin-walled pipe-like workpiece, wherein the workpiece is turned continuously along the entire inner peripheral surface, and the outer surface of the workpiece is subjected to turning in this state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26175199A JP4310562B2 (en) | 1999-09-16 | 1999-09-16 | External turning method for thin-walled pipe workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26175199A JP4310562B2 (en) | 1999-09-16 | 1999-09-16 | External turning method for thin-walled pipe workpieces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001087902A true JP2001087902A (en) | 2001-04-03 |
| JP4310562B2 JP4310562B2 (en) | 2009-08-12 |
Family
ID=17366213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26175199A Expired - Fee Related JP4310562B2 (en) | 1999-09-16 | 1999-09-16 | External turning method for thin-walled pipe workpieces |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4310562B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002172502A (en) * | 2000-12-07 | 2002-06-18 | Takamatsu Machinery Co Ltd | Working method and working device for cylinder member and photographic processor |
| JP2007030125A (en) * | 2005-07-29 | 2007-02-08 | Murata Mach Ltd | Workpiece loading system of machine tool |
| JP2011067922A (en) * | 2009-09-28 | 2011-04-07 | Okuma Corp | Vibration control tool and turning method for thin wall cylindrical workpiece in which vibration control tool is inserted |
-
1999
- 1999-09-16 JP JP26175199A patent/JP4310562B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002172502A (en) * | 2000-12-07 | 2002-06-18 | Takamatsu Machinery Co Ltd | Working method and working device for cylinder member and photographic processor |
| JP4616464B2 (en) * | 2000-12-07 | 2011-01-19 | 高松機械工業株式会社 | Cylindrical member processing method and processing apparatus, and photographic processing apparatus |
| JP2007030125A (en) * | 2005-07-29 | 2007-02-08 | Murata Mach Ltd | Workpiece loading system of machine tool |
| JP2011067922A (en) * | 2009-09-28 | 2011-04-07 | Okuma Corp | Vibration control tool and turning method for thin wall cylindrical workpiece in which vibration control tool is inserted |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4310562B2 (en) | 2009-08-12 |
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