JP2010155279A - Pipe processing jig - Google Patents
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Abstract
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本発明は、管材を拡開、縮径するパンチ、又は曲げるマンドレルの芯金片等のパイプ加工冶具に関する。 The present invention relates to a pipe processing jig such as a punch for expanding or reducing the diameter of a pipe, or a mandrel core piece for bending.
従来、この種の冶具は、拡開、縮径するパンチ（パンチとする）、又は曲げるマンドレルの芯金片（芯金片とする）のスムーズな移動（引抜き、又は圧入）を図りつつ、加工滓の誘導と、管材の皺・傷・変形発生防止、及び／又は加工油の持続性等を確保するために、このパンチ、芯金片（原則として、冶具とする）の表面及び／又は圧設部に、加工した発明、考案がある。その一例を説明すると、
文献（１）は、実開昭６１−２７５１５号の「アルミパイプ用マンドレル装置」で、マンドレル、又は芯金片の正面に、セラミック粒子層を形成した構造であり、アルミ付着の軽減化を図ること、加工油の持続性を担持すること等を意図する。
Conventionally, this type of jig is processed while smoothly moving (pulling or press-fitting) a punch (punch) that expands and contracts a diameter, or a mandrel core metal piece (core metal piece) to be bent. The surface and / or pressure of this punch, core piece (in principle, a jig) to ensure the induction of defects and the prevention of defects, scratches and deformation of the pipe material and / or the durability of the processing oil There is a processed invention and device in the installation part. For example,
Document (1) is a “mandrel device for aluminum pipe” disclosed in Japanese Utility Model Publication No. 61-27515, which has a structure in which a ceramic particle layer is formed on the front surface of a mandrel or a cored bar to reduce aluminum adhesion. Intended to carry the sustainability of the processing oil.
また、文献（２）は、特開平７−２９０１５７号の「パイプ曲げ加工用心金」で、この心金の先端部の外周面に、長手方向に向かって、溝を形成した構造であり、パイプの伸び潰れ等の変形防止と、加工油の持続性を担持すること等を意図する。 Reference (2) is a “pipe bending mandrel” disclosed in Japanese Patent Application Laid-Open No. 7-290157, and has a structure in which a groove is formed in the outer peripheral surface of the tip of the mandrel in the longitudinal direction. It is intended to prevent deformation such as elongation crushing and to support the sustainability of the processing oil.
文献（３）は、実開昭６１−１３３２１８号の「曲り管製造用マンドレル」であり、この考案は、文献（２）と同じ構造である。 Reference (3) is “Mandrel for manufacturing bent pipe” disclosed in Japanese Utility Model Laid-Open No. 61-133218, and this device has the same structure as Reference (2).
さらに、文献（４）は、特開平３−１５１１０５号の「チタン材の継目無管の製造方法」であり、ホローピースを傾斜ロール式圧延機で延伸圧延する際に使用される圧延ロールにおいて、そのロール表面にローレット加工で凹凸を形成した構造の圧延ロールである。しかし、この発明は、被圧延材と圧延ロール（傾斜ロール）との噛込み不良防止を図ること等を意図する。 Furthermore, document (4) is “a method for producing a seamless tube of titanium material” in JP-A-3-151105. In a rolling roll used when a hollow piece is stretch-rolled by an inclined roll type rolling mill, It is a rolling roll having a structure in which irregularities are formed on the roll surface by knurling. However, this invention intends to prevent biting failure between the material to be rolled and the rolling roll (tilted roll).
前述した文献（１）の考案には、単純に、マンドレル、又は芯金片の正面に、セラミック粒子層を形成した構造が開示されている。この考案は、セラミック粒子層を形成する構造である。しかし、このセラミック粒子の配置、及び／又は、粒子寸法に関する開示と、この構造を示唆する内容の開示がないことから、この考案が目的とする「アルミ付着の軽減化を図ること、加工油の持続性を担持すること、」等を達成するには問題があると考えられる。 The idea of the above-mentioned document (1) simply discloses a structure in which a ceramic particle layer is formed on the front surface of a mandrel or a core piece. This device is a structure for forming a ceramic particle layer. However, since there is no disclosure regarding the arrangement and / or particle size of the ceramic particles and disclosure of the content suggesting the structure, the object of the present invention is to “reducing aluminum adhesion, It seems that there is a problem in achieving “sustainability”.
また、文献（２）、（３）の発明、考案には、芯金片（心金）の外周面に、長手方向か、その一部に溝を形成した構造が開示されている。従って、パイプの伸び潰れ等の変形防止と、長手方向の例では、加工油の持続性を担持できる効果が考えられる。しかし、この発明、考案においては、溝の構造において、その溝の幅、及び／又は、深さ、溝と外周面のＲ角度等に関する開示が充分でなく、精緻な加工を図る際に、ヒビリとか、擦り傷、又は亀裂発生等の手当てに関し、改良点と、さらなる技術の裏付けが、要求されるものと考えられる。 Further, the inventions and devices of Documents (2) and (3) disclose a structure in which a groove is formed in the longitudinal direction or a part of the outer peripheral surface of a cored bar (mandrel). Therefore, it is possible to prevent deformation such as expansion and contraction of the pipe, and in the example in the longitudinal direction, it is possible to support the sustainability of the processing oil. However, in the present invention and device, in the structure of the groove, disclosures regarding the width and / or depth of the groove, the R angle between the groove and the outer peripheral surface, etc. are not sufficient, and when precise processing is attempted, It is considered that improvement and further technical support are required for treatment such as scratches, cracks, or cracks.
さらに、文献（４）の発明には、ローレット加工で、ロール表面に凹凸を形成した構造が開示されている。そして、この発明は、噛込み防止を意図するものであり、単純な構造の凹凸で可能とか考えられる。しかし、芯金片等の冶具を介して、精緻なパイプ加工を図る際に、ヒビリとか、擦り傷、又は亀裂発生等の不良品の発生を防止するには、この単純な凹凸のロール表面では、困難性が考えられる。 Furthermore, the invention of Document (4) discloses a structure in which irregularities are formed on the roll surface by knurling. And this invention intends prevention of biting, and it is thought that it is possible by the unevenness | corrugation of a simple structure. However, in order to prevent the occurrence of defective products such as cracks, scratches, cracks, etc., when performing precise pipe processing through a jig such as a core bar piece, Difficulty is considered.
請求項１の発明は、冶具の表面から膨出（突出）した形状、及び／又は、その凸部の高さの特定性を発揮する構造とすることで、精緻な加工をすることと、加工に起因するヒビリとか、擦り傷、又は亀裂発生等を解消すること等を意図する。そして、請求項１の発明は、冶具の表面から膨出した凸部の形状、及び／又は、その方向性を特定し、管曲げ加工から、管の拡縮加工まで、この加工の全てに対応でき、かつ精度の良い加工ができる冶具を提供することを意図する。 The invention according to claim 1 is a method of performing precise processing by forming a shape that bulges (projects) from the surface of the jig and / or a structure that exhibits the specificity of the height of the convex portion. It is intended to eliminate the burrs, scratches, cracks, etc. caused by The invention of claim 1 can specify the shape and / or directionality of the convex portion bulging from the surface of the jig, and can handle all of this processing from tube bending to tube expansion / contraction. In addition, the present invention intends to provide a jig capable of processing with high accuracy.
請求項１は、パイプ加工冶具の芯金片の一面に、微細な楕円形状でなる凸部を膨出形成するとともに、この楕円形状の凸部の長径が、この芯金の進行方向に向かって、配置される構造とし、かつこの楕円形状の凸部が、前記芯金の進行方向に向かって、縦列されていることを特徴としたパイプ加工冶具の芯金片の構造である。 According to a first aspect of the present invention, a convex portion having a fine elliptical shape is formed on one surface of a core bar piece of a pipe processing jig, and the major axis of the elliptical convex portion is directed toward the traveling direction of the cored bar. This is a structure of a metal core piece of a pipe processing jig, characterized in that the elliptical convex portions are arranged in a row in the traveling direction of the metal core.
請求項２の発明は、請求項１の目的を達成すること、この目的を達成するに最適な、凸部の形状と、寸法の構造を提供すること、等を意図する。 The invention of claim 2 is intended to achieve the object of claim 1, to provide the structure of the convex shape and the dimension optimal for achieving this object, and the like.
請求項２は、請求項２に記載のパイプ加工冶具の芯金片であって、
この楕円形状の凸部の寸法は、楕円形状の長径が、略１．３５〜２．８５ｍｍ程度で、楕円形状の短径が、略０．３５〜１．５ｍｍ程度であって、かつ深さが略０．０２５〜略０．１５ｍｍ程度とする構成としたパイプ加工冶具の芯金片である。
Claim 2 is a core metal piece of the pipe processing jig according to claim 2,
The size of the elliptical convex portion is such that the major axis of the elliptical shape is approximately 1.35 to 2.85 mm, the minor axis of the elliptical shape is approximately 0.35 to 1.5 mm, and the depth. Is a metal core piece of a pipe processing jig configured to be approximately 0.025 to approximately 0.15 mm.
請求項３の発明は、冶具の表面から膨出（突出）した楕円形状と、円形状、及び／又は、その凸部の高さの特定性を発揮する構造とすることで、確実、かつ精緻な加工をすることと、加工に起因するヒビリとか、擦り傷、又は亀裂発生等を解消すること等を意図する。そして、請求項３の発明は、冶具の表面から膨出した凸部の楕円形状と、円形状、及び／又は、その方向性を特定し、管曲げ加工から、管の拡縮加工まで、この加工の全てに対応でき、かつ精度の良い加工ができる冶具を提供することを意図する。 The invention according to claim 3 is reliable and precise by adopting a structure that exhibits an elliptical shape bulging (projecting) from the surface of the jig, a circular shape, and / or the height of the convex portion. It is intended to perform various processing, to eliminate cracks, scratches, cracks, etc. resulting from the processing. The invention of claim 3 specifies the elliptical shape and the circular shape of the convex portion bulging from the surface of the jig, and / or the direction thereof, and from this pipe bending process to the pipe expansion / contraction process. It is intended to provide a jig that can handle all of the above and that can be processed with high accuracy.
請求項３は、パイプ加工冶具の芯金片の一面に、微細な楕円形状でなる凸部と、円形状でなる凸部とを、交互に膨出形成するとともに、この楕円形状の凸部の長径が、この芯金の進行方向に向かって、配置される構造とし、かつこの楕円形状の凸部と、円形状でなる凸部とが、前記芯金の進行方向に向かって、縦列されていることを特徴としたパイプ加工冶具の芯金片の構造である。 According to a third aspect of the present invention, a convex portion having a fine elliptical shape and a convex portion having a circular shape are alternately bulged and formed on one surface of a metal core piece of a pipe processing jig. The major axis has a structure that is arranged toward the traveling direction of the core metal, and the elliptical convex portion and the circular convex portion are vertically arranged in the traveling direction of the core metal. It is the structure of the metal core piece of the pipe processing jig characterized by having.
請求項４の発明は、請求項３の目的を達成すること、この目的を達成するに最適な、凸部の楕円形状と、円形状と、寸法の構造を提供すること、等を意図する。 The invention of claim 4 is intended to achieve the object of claim 3, to provide an elliptical shape of the convex portion, a circular shape, and a size structure that are optimal for achieving the object.
請求項４は、請求項３に記載のパイプ加工冶具の芯金片であって、
前記楕円形状の凸部の寸法は、楕円形状の長径が、略１．３５〜２．８５ｍｍ程度で、楕円形状の短径が、略０．３５〜１．５ｍｍ程度であって、かつ深さが略０．０２５〜略０．１５ｍｍ程度とし、
また、前記円形状の凸部の寸法は、円形状の直径が、略０．４〜１．２ｍｍ程度であって、かつ深さが０．０２５〜０．１５ｍｍ程度とする構成としたパイプ加工冶具の芯金片である。
Claim 4 is a core metal piece of the pipe processing jig according to claim 3,
The elliptical convex portion has a major axis of about ellipse of about 1.35 to 2.85 mm, a minor axis of the ellipse of about 0.35 to 1.5 mm, and a depth. Is about 0.025 to about 0.15 mm,
In addition, the dimension of the circular convex portion is such that the diameter of the circular shape is about 0.4 to 1.2 mm and the depth is about 0.025 to 0.15 mm. It is a metal core piece of a jig.
請求項５の発明は、請求項３の目的を達成すること、この目的を達成するに最適な、凸部の楕円形状と、円形状の配列構造を提供すること、等を意図する。 The invention of claim 5 is intended to achieve the object of claim 3 and to provide an elliptical shape of convex portions and a circular array structure that are optimal for achieving the object.
請求項５は、請求項３に記載のパイプ加工冶具の芯金片であって、
前記楕円形状の凸部と、前記円形状の凸部との縦列方向の配列が、前記進行方向において、ズレた位置で設けられている構成としたパイプ加工冶具の芯金片である。
Claim 5 is a metal core piece of the pipe processing jig according to claim 3,
It is a metal core piece of a pipe processing jig having a configuration in which the arrangement in the column direction of the elliptical convex portion and the circular convex portion is provided at a shifted position in the traveling direction.
請求項１の発明は、パイプ加工冶具の芯金片の一面に、微細な楕円形状でなる凸部を膨出形成するとともに、楕円形状の凸部の長径が、芯金の進行方向に向かって、配置される構造とし、かつ楕円形状の凸部が、芯金の進行方向に向かって、縦列されていることを特徴としたパイプ加工冶具の芯金片の構造である。 According to the first aspect of the present invention, a convex portion having a fine elliptical shape is formed on one surface of a core bar piece of a pipe processing jig, and the major axis of the elliptical convex portion is directed toward the traveling direction of the cored bar. The structure of the metal core piece of the pipe processing jig is characterized in that the structure is arranged and the elliptical convex portions are arranged in a row in the direction of travel of the metal core.
従って、請求項１は、冶具の表面から膨出（突出）した形状、及び／又は、その凸部の高さの特定性を発揮する構造とすることで、精緻な加工ができることと、加工に起因するヒビリとか、擦り傷、又は亀裂発生等の解消に役立つこと、等の特徴を有する。そして、請求項１は、冶具の表面から膨出した凸部の形状、及び／又は、その方向性を特定し、管曲げ加工から、管の拡縮加工まで、この加工の全てに対応でき、かつ精度の良い加工ができる冶具を提供できる実益がある。 Therefore, according to the first aspect of the present invention, it is possible to perform precise processing by forming a shape that bulges (projects) from the surface of the jig and / or a structure that exhibits the specificity of the height of the convex portion. It has features such as helping to eliminate the occurrence of scratches, scratches, cracks, and the like. And Claim 1 specifies the shape of the convex part bulged from the surface of the jig, and / or its directionality, can handle all of this processing from tube bending to tube expansion and contraction, and There is an advantage that can provide a jig that can be processed with high accuracy.
請求項２の発明は、請求項２に記載のパイプ加工冶具の芯金片であって、
楕円形状の凸部の寸法は、楕円形状の長径が、略１．３５〜２．８５ｍｍ程度で、楕円形状の短径が、略０．３５〜１．５ｍｍ程度であって、かつ深さが略０．０２５〜略０．１５ｍｍ程度とする構成としたパイプ加工冶具の芯金片である。
Invention of Claim 2 is a metal core piece of the pipe processing jig of Claim 2,
The ellipse-shaped convex portion has an elliptical major axis of about 1.35 to 2.85 mm, an elliptical minor axis of about 0.35 to 1.5 mm, and a depth of This is a core piece of a pipe processing jig having a configuration of about 0.025 to about 0.15 mm.
従って、請求項２は、請求項１の目的を達成できること、この目的を達成するに最適な、凸部の形状と、寸法の構造を提供できること、等の特徴を有する。 Accordingly, the second aspect has the characteristics that the object of the first aspect can be achieved, and the structure of the convex portion and the dimension which are optimal for achieving the object can be provided.
請求項３の発明は、パイプ加工冶具の芯金片の一面に、微細な楕円形状でなる凸部と、円形状でなる凸部とを、交互に膨出形成するとともに、楕円形状の凸部の長径が、芯金の進行方向に向かって、配置される構造とし、かつ楕円形状の凸部と、円形状でなる凸部とが、芯金の進行方向に向かって、縦列されていることを特徴としたパイプ加工冶具の芯金片の構造である。 According to the invention of claim 3, a fine ellipse-shaped convex portion and a circular convex portion are alternately bulged and formed on one surface of a metal core piece of a pipe processing jig, and an elliptical convex portion The major axis of the core is arranged in the direction of travel of the core metal, and the elliptical convex part and the circular convex part are vertically arranged in the direction of progress of the core metal. It is the structure of the metal core piece of the pipe processing jig characterized by.
従って、請求項３は、冶具の表面から膨出（突出）した楕円形状と、円形状、及び／又は、その凸部の高さの特定性を発揮する構造とすることで、確実、かつ精緻な加工ができることと、加工に起因するヒビリとか、擦り傷、又は亀裂発生等を解消できること等の特徴を有する。そして、請求項３は、冶具の表面から膨出した凸部の楕円形状と、円形状、及び／又は、その方向性を特定し、管曲げ加工から、管の拡縮加工まで、この加工の全てに対応でき、かつ精度の良い加工ができる冶具を提供できる実益がある。 Therefore, the third aspect of the present invention is reliable and precise by adopting a structure that exhibits an elliptical shape bulging (projecting) from the surface of the jig, a circular shape, and / or the height of the convex portion. It has features such as being capable of being processed smoothly, and being able to eliminate cracks, scratches, cracks, etc. resulting from the processing. And the claim 3 specifies the elliptical shape and the circular shape of the convex part bulging from the surface of the jig, and / or its directionality, and all of this processing from tube bending processing to tube expansion / contraction processing There is an actual advantage that it can provide a jig that can cope with and process with high accuracy.
請求項４の発明は、請求項３に記載のパイプ加工冶具の芯金片であって、
楕円形状の凸部の寸法は、楕円形状の長径が、略１．３５〜２．８５ｍｍ程度で、楕円形状の短径が、略０．３５〜１．５ｍｍ程度であって、かつ深さが略０．０２５〜略０．１５ｍｍ程度とし、
また、円形状の凸部の寸法は、円形状の直径が、略０．４〜１．２ｍｍ程度であって、かつ深さが略０．０２５〜略０．１５ｍｍ程度とする構成としたパイプ加工冶具の芯金片である。
Invention of Claim 4 is a metal core piece of the pipe processing jig of Claim 3,
The ellipse-shaped convex portion has an elliptical major axis of about 1.35 to 2.85 mm, an elliptical minor axis of about 0.35 to 1.5 mm, and a depth of About 0.025 to about 0.15 mm,
Further, the dimensions of the circular convex portion are such that the diameter of the circular shape is about 0.4 to 1.2 mm and the depth is about 0.025 to about 0.15 mm. It is a core piece of a processing jig.
従って、請求項４は、請求項３の目的を達成できること、この目的を達成するに最適な、凸部の楕円形状と、円形状と、寸法の構造を提供できること、等の特徴を有する。 Accordingly, the fourth aspect has the characteristics that the object of the third aspect can be achieved, and an elliptical shape, a circular shape, and a dimensional structure that are optimal for achieving the object can be provided.
請求項５の発明は、請求項３に記載のパイプ加工冶具の芯金片であって、
楕円形状の凸部と、円形状の凸部との縦列方向の配列が、進行方向において、ズレた位置で設けられている構成としたパイプ加工冶具の芯金片である。
Invention of Claim 5 is a metal core piece of the pipe processing jig of Claim 3,
This is a core metal piece of a pipe processing jig having a configuration in which the arrangement in the column direction of the elliptical convex portion and the circular convex portion is provided at a position shifted in the traveling direction.
従って、請求項５は、請求項３の目的を達成できること、この目的を達成するに最適な、凸部の楕円形状と、円形状の配列構造を提供できること、等の特徴を有する。 Therefore, claim 5 has the characteristics that the object of claim 3 can be achieved, and an elliptical shape of convex portions and a circular arrangement structure that are optimal for achieving the object can be provided.
図１と、図４−１〜図４−３、並びに図８−１と、図８−２において、１は中実の拡管パンチで、この拡管パンチ１は、取付管部１ａと、第一段部１ｂ、並びに中管部１ｃと、収歛傾斜管部１ｄ、また、頂面部１ｅを有する構造であり、この取付管部１ａの本体部位１ａ１と、第一段部１ｂ、並びに中管部１ｃと、収歛傾斜管部１ｄ、また、頂面部１ｅの周辺部位１ｅ１に亙って、その表面には、差込み方向（進行方向Ａ）に向かって、楕円形状の凸部２と、円形状の凸部２ａとが縦列（一列）に順次配列されると共に、その隣接する楕円形状の凸部２（以下、凸部２とする）と、円形状の凸部２ａ（以下、凸部２ａとする）は、その環状方向Ｂ（円周方向）において、それぞれ規定のズレＱで設けられている。この縦列する方向の凸部２と、凸部２ａとの裾部間Ｒは溝となっており、この溝が凹部３（３ａ）となる構成である。また、この凸部２、及び凸部２ａと、環状方向Ｂに隣接する凸部２−１と、凸部２ａ−１との裾部間Ｒ１は溝となっており、この溝が凹部３−１となる構成である。 1, FIG. 4-1 to FIG. 4-3, FIG. 8-1, and FIG. 8-2, 1 is a solid tube expansion punch, and this tube expansion punch 1 includes a mounting tube portion 1 a, The step portion 1b, the intermediate tube portion 1c, the converging inclined tube portion 1d, and the top surface portion 1e are structured. The main body portion 1a1, the first step portion 1b, and the intermediate tube portion of the mounting tube portion 1a 1c, the converging inclined pipe portion 1d, and the peripheral portion 1e1 of the top surface portion 1e, the surface thereof has an elliptical convex portion 2 and a circular shape toward the insertion direction (traveling direction A). Are sequentially arranged in a column (one row), the adjacent elliptical convex portions 2 (hereinafter referred to as convex portions 2), and circular convex portions 2a (hereinafter referred to as convex portions 2a). Are provided with a specified deviation Q in the annular direction B (circumferential direction). The skirt portion R between the convex portion 2 and the convex portion 2a in the column direction is a groove, and this groove is a concave portion 3 (3a). Further, the skirt portion R1 between the convex portion 2 and the convex portion 2a, the convex portion 2-1 adjacent to the annular direction B, and the convex portion 2a-1 is a groove, and this groove is the concave portion 3- 1 is the configuration.
尚、前記凸部２、及び凸部２ａを総称する場合には、凸部２等とする。また、凹部３、及び凹部３ａを総称する場合には、凹部３等とする。 In addition, when naming the said convex part 2 and the convex part 2a generically, let it be the convex part 2 grade | etc.,. Further, when the concave portion 3 and the concave portion 3a are collectively referred to as the concave portion 3 or the like.
この凸部２等と、凹部３等の構造を、図８−１と、図８−２を基に説明すると、凸部２の寸法は、楕円形状の長径２００が、略１．３５〜２．８５ｍｍ程度で、楕円形状の短径２０１が、略０．３５〜１．５ｍｍ程度であって、かつ深さ２０２が略０．０２５〜略０．１５ｍｍ程度である。また、円形状の凸部２ａの寸法は、円形状の直径２００ａが、略０．４〜１．２ｍｍ程度であって、かつ深さ２０２ａが０．０２５〜０．１５ｍｍ程度である。そして、この凸部２等間には、凹部３と、凹部３ａがそれぞれ形成される。尚、凸部２の上端２０３はフラットとし、断面形状の山形形状とし、かつその上端２０３の周辺部は、曲面形状とする。また、円形状の凸部２ａの上端２０３ａはフラットとし、断面形状を山形形状とし、かつその上端２０３ａの周辺部は、曲面形状とする。この構造の如く、凸部２と凸部２ａを、山形形状とすることで、この凸部２、２ａの上端２０３、２０３ａと、凹部３、３ａとの間に深さ２０２、２０２ａを形成し（換言すると、凸部２、２ａの高さＨである）、加工時の塑性変形、又は異物・屑等の排出と、また、加工油の流動化等に役立てる。しかし、場合により、図示しないが、被加工物と、加工程度において、この凸部２、及び／又は、凸部２ａは、断面形状を球形状とすることもあり得る。 The structure of the convex part 2 and the like and the concave part 3 will be described with reference to FIGS. 8-1 and 8-2. The dimension of the convex part 2 is such that the elliptical major axis 200 is approximately 1.35 to 2. The elliptical minor axis 201 is about 0.35 to 1.5 mm, and the depth 202 is about 0.025 to about 0.15 mm. The circular convex portion 2a has a circular diameter 200a of about 0.4 to 1.2 mm and a depth 202a of about 0.025 to 0.15 mm. And between this convex part 2 grade | etc., The recessed part 3 and the recessed part 3a are each formed. The upper end 203 of the convex portion 2 is flat, has a cross-sectional mountain shape, and the peripheral portion of the upper end 203 has a curved surface shape. Further, the upper end 203a of the circular convex portion 2a is flat, the cross-sectional shape is a mountain shape, and the peripheral portion of the upper end 203a is a curved surface shape. Like this structure, the convex part 2 and the convex part 2a are formed in a mountain shape so that depths 202 and 202a are formed between the upper ends 203 and 203a of the convex parts 2 and 2a and the concave parts 3 and 3a. (In other words, it is the height H of the convex portions 2 and 2a), plastic deformation during processing, discharge of foreign matter and debris, fluidization of processing oil, and the like. However, although not shown, depending on the workpiece and the degree of processing, the convex portion 2 and / or the convex portion 2a may have a spherical cross-sectional shape.
また、図８−１と、図８−２の如く、隣接する凸部２等及び凹部３等との間には、その環状方向Ｂにおいて、それぞれ規定のズレＱ（略凸部２ａの一個分の寸法）を設けることで、凸部２と凸部２ａとの間に、流れ方向の凹部３−２が形成される。そして、この流れ方向の凹部３−２は、前述した、加工時の塑性変形、又は異物・屑等の排出と、また、加工油の流動化等に役立ち、しかも、前記この凸部２、２ａと、凹部３、３ａとの深さ２０２、２０２ａの形成と相俟って、最高の管の加工が図れる。従って、この全ての構造（凸部２、２ａと、凹部３、３ａとの深さ２０２、２０２ａ、又はズレＱ）を備えたことが理想であるが、例えば、このズレＱの構造を省略することもあり得る。即ち、この凸部２等及び凹部３等とが、環状方向Ｂにおいて、同じ、環状位置（円周位置）に設けられる構造であり、この凸部２の環状方向Ｂの隣に、凸部２が、また、凸部２ａの環状方向Ｂの隣に、凸部２ａが存在し、同時に凹部３−１が、環状方向Ｂと直交する方向に縦筋となり、凹部３−２が、環状方向Ｂに横筋（ズレＱによる傾斜筋でなく）となる構造である。そして、この拡管パンチ１の表面１−１の凸部２、２ａと、凹部３、３ａは、通常、シボ加工（エッチング加工）を利用して製造する。このシボ加工後に、この成形表面を、全体にコーティング加工することが最適である。このコーティングは、表面１−１と、凹凸部２等、３等が同じコーティング加工が望ましいが、場合により、凸部２、２ａと、凹部３、３ａとを、別のコーティング加工の場合も考えられる。尚、以下の実施例の説明は、代表例として、凸部２と、凸部２ａが、また凹部３と、凹部３ａが、ズレＱを有する構造で説明する。 Further, as shown in FIG. 8A and FIG. 8B, between the adjacent convex portions 2 and the concave portions 3 and the like, in the annular direction B, each of the specified deviations Q (approximately one convex portion 2a). Is provided between the convex portion 2 and the convex portion 2a, the concave portion 3-2 in the flow direction is formed. The concave portion 3-2 in the flow direction is useful for the above-described plastic deformation at the time of processing or discharging foreign matter / debris and the like, and fluidizing the processing oil, and the convex portions 2, 2a. In combination with the formation of the depths 202 and 202a with the recesses 3 and 3a, the best tube can be processed. Therefore, it is ideal that all the structures (depths 202, 202a or deviation Q between the convex portions 2, 2a and the concave portions 3, 3a) are provided. For example, the structure of the deviation Q is omitted. It can happen. That is, the convex portion 2 and the concave portion 3 and the like are provided in the same annular position (circumferential position) in the annular direction B, and the convex portion 2 is adjacent to the annular direction B of the convex portion 2. However, the convex portion 2a is present next to the annular direction B of the convex portion 2a, and at the same time, the concave portion 3-1 becomes a vertical line in a direction orthogonal to the annular direction B, and the concave portion 3-2 is formed in the annular direction B. This is a structure that forms a horizontal line (not an inclined line due to the shift Q). And the convex parts 2 and 2a and the recessed parts 3 and 3a of the surface 1-1 of this pipe expansion punch 1 are normally manufactured using a texturing process (etching process). It is optimal to coat the entire molding surface after the embossing. For this coating, it is desirable that the surface 1-1 and the concave and convex portions 2 and 3 have the same coating process. However, depending on the case, the convex portions 2 and 2a and the concave portions 3 and 3a may be subjected to another coating process. It is done. In the following description of the embodiment, as a representative example, the convex portion 2 and the convex portion 2a, and the concave portion 3 and the concave portion 3a are described as a structure having a deviation Q.
この拡管パンチ１の加工状態を示した図４−１〜図４−３において、管体５を、クランプ、ダイ、又はダイス、冶具等の管体支持機具（図示せず）を介して支持し、図４−１の如く、管体５の内周面５００に向かって、凹凸部２等、３等を備えた拡管パンチ１の頂面部１ｅの周辺部位１ｅ１から挿入する。そして、図４−２に如く、管体５の頂面部１ｅの周辺部位１ｅ１から、収歛傾斜管部１ｄを介して、その内周面５００の内方に向かって、順次、圧入することで、この収歛傾斜管部１ｄを主体として、当該内周面５００を、放射方向に押圧し、かつ管体５を放射方向に拡管する（塑性変形される）。この拡管パンチ１の管体５の内部５ｂに向かった押圧で、管体５には、端部５ａから内部５ｂに向かって収斂した所定の拡管部６ａが加工（成形）される。そして、この圧入過程で、凸部２等が、内周面５００を摺設し、かつ管体５からの埃、屑等の異物を、凸部２等の外周面を流れるように凹部３等に導き、かつズレＱを持って、この凸部２等と凹部３等が形成されていることから、順次、管体５の内周面５００の端部５ａに導くことで、この異物が、内周面５００に傷を付けることなく、しかも拡管加工の傷害となることは皆無である。また、この凸部２等が、ズレＱと、凹部３等（ズレＱ）と、凹部３−１、３−２（凹部３−１等）をもって、膨出配設されていることから、内周面５００に、一気な押圧力が発生せず、かつランダムな押圧力となることから、この内周面５００及び／又は管体５の精緻な加工と、加工に起因するヒビリとか、擦り傷、又は亀裂発生等を解消できること、又は拡管パンチ１の損傷、磨耗発生回避に役立ち有益である。また、この凹部３等は加工油の保留と、誘導路として有効であり、またこの凹部３等は、ズレＱ（凹部３−２を含む）をもち、かつ凹部３−１で、この凸部２等を囲繞するように連設されているので、前記保留、誘導路としての効果を最大限に発揮できる。この加工が順次、進捗することで、管体５に拡管部６ａが形成される。その後、図４−３の如く、拡管パンチ１を、管体５より脱抜することで、正確で、かつ品質の良い拡管部６ａが形成される。尚、この拡管パンチ１の形状は一例である。 In FIGS. 4-1 to 4-3 showing the processing state of the tube expanding punch 1, the tube body 5 is supported via a tube support device (not shown) such as a clamp, a die, or a die or a jig. As shown in FIG. 4A, the tube body 5 is inserted from the peripheral portion 1 e 1 of the top surface portion 1 e of the tube expansion punch 1 having the uneven portions 2, 3, etc. toward the inner peripheral surface 500 of the tube body 5. Then, as shown in FIG. 4B, by sequentially press-fitting from the peripheral portion 1e1 of the top surface portion 1e of the tube body 5 toward the inner side of the inner peripheral surface 500 through the convergent inclined tube portion 1d. The inner peripheral surface 500 is pressed in the radial direction, and the tubular body 5 is expanded in the radial direction (plastically deformed) with the convergent inclined pipe portion 1d as a main body. By pressing toward the inside 5b of the tube body 5 of the tube expanding punch 1, a predetermined tube expanding portion 6a converged from the end 5a toward the inside 5b is processed (molded) in the tube body 5. Then, in this press-fitting process, the convex portion 2 etc. slides on the inner peripheral surface 500 and the concave portion 3 etc. so that foreign matter such as dust and debris from the tube 5 flows on the outer peripheral surface of the convex portion 2 etc. Since this convex part 2 etc. and concave part 3 etc. are formed with deviation Q, this foreign matter is sequentially guided to the end part 5a of the inner peripheral surface 500 of the tubular body 5, There is no damage to the inner peripheral surface 500 without causing damage to the tube expansion process. Further, since the convex portions 2 and the like are bulged and arranged with the deviation Q, the concave portions 3 and the like (deviation Q), and the concave portions 3-1 and 3-2 (the concave portions 3-1 etc.), Since no pressing force is generated on the peripheral surface 500 and the pressing force is random, the inner peripheral surface 500 and / or the tubular body 5 is processed with precision, cracks caused by the processing, scratches, Or it is useful to be able to eliminate the occurrence of cracks, etc., or to avoid the damage and wear of the tube expansion punch 1. The recesses 3 and the like are effective for retaining processing oil and guiding paths. The recesses 3 and the like have a deviation Q (including the recesses 3-2), and the recesses 3-1, Since it is arranged so as to surround 2 etc., the effect as the holding and guiding path can be maximized. As this processing progresses sequentially, the expanded portion 6a is formed in the tubular body 5. Thereafter, as shown in FIG. 4-3, the tube-expansion punch 1 is removed from the tube body 5, so that an accurate and high-quality tube expansion portion 6a is formed. In addition, the shape of this pipe expansion punch 1 is an example.
図２と、図５−１〜図５−３、並びに図８−１と、図８−２において、１０は全体として中実の縮管ダイスで、この縮管ダイス１０は、上方が開口１００したテーパー形状に縮径した絞り部１０ａと、その下方に環状逃し部１０ｂを備えている。そして、この縮管ダイス１０の絞り部１０ａには、前述した凸部２、２ａと、凹部３、３ａの構造と、この凸部２、２ａの深さ２０２、２０２ａ（高さＨ）に対応した構造と、また、ズレＱの構造が施されている。 2, FIGS. 5-1 to 5-3, 8-1, and 8-2, reference numeral 10 denotes a solid contraction die as a whole, and the contraction die 10 has an opening 100 at the top. The throttle portion 10a having a reduced diameter into the tapered shape and the annular relief portion 10b are provided below the throttle portion 10a. Further, the narrowed portion 10a of the tube dice 10 corresponds to the structure of the convex portions 2, 2a and the concave portions 3, 3a described above, and the depths 202, 202a (height H) of the convex portions 2, 2a. And the structure of the deviation Q are given.
この縮管ダイス１０の加工状態を示した図５−１〜図５−３において、縮管ダイス１０（又は管体５）を、クランプ、ダイ、又はダイス、冶具等の管体支持機具を介して支持し、図５−１の如く、管体５の端部５ａを、縮管ダイス１０の開口１００に挿入し、凹凸部２等、３等を備えた絞り部１０ａに向かって、順次、圧入する。そして、図５−２に如く、順次、圧入することで、管体５の端部５ａが、内方（反放射方向）に押圧されていき、縮管する（塑性変形される）とともに、この管体５を、順次、絞り部１０ａに向かって、圧入する。この管体５の圧入を介して、内部５ｂから端部５ａに向かって、順次、狭くなり、かつ絞り部１０ａと同形状（テーパー形状）の縮管が加工される。この管体５の縮管過程において、凸部２等が、外周面５０１を摺設し、かつ管体５からの埃、屑等の異物を凹部３等に導き、かつズレＱを持って、この凸部２等と凹部３等が形成されていることから、順次、管体５の外周面５０１の端部５ａに導くことで、この異物が、外周面５０１に傷を付けることなく、しかも縮管加工の傷害となることは皆無である。また、この凸部２等が、前述の如く、膨出配設されていることから、外周面５０１に、一気な押圧力が発生せず、かつランダムな押圧力となることから、この外周面５０１及び／又は管体５の精緻な加工と、加工に起因するヒビリとか、擦り傷、又は亀裂発生等を解消できること、又は縮管ダイス１０の損傷、磨耗発生回避に役立ち有益である。また、この凹部３等は加工油の保留と、誘導路として有効であり、またこの凹部３等は、ズレＱをもち、かつ凹部３−１で、この凸部２等を囲繞するように連設されているので、前記保留、誘導路としての効果を最大限に発揮できる。この加工が順次、進捗することで、管体５に縮管部６ｂが形成される。その後、図５−３の如く、縮管ダイス１０を、管体５より脱抜することで、正確で、かつ品質の良い縮管部６ｂが形成される。尚、この縮管ダイス１０の形状は一例である。そして、別の加工方法として、例えば、縮管ダイス１０の開口１００を、前記の如く、支持した管体５の端部５ａから、套嵌、かつ順次圧入して、縮管する加工方法もあり得る。そして、この縮管ダイス１０の全周面１０−１は、全体にコーティング加工することが最適である。しかし、そのコーティング加工は、前述の実施例に準ずる。
In FIGS. 5-1 to 5-3 showing the processing state of the contraction die 10, the contraction die 10 (or the tubular body 5) is connected to a clamp, a die, or a tube support device such as a die or a jig. As shown in FIG. 5A, the end portion 5a of the tube body 5 is inserted into the opening 100 of the contraction die 10 and sequentially toward the throttle portion 10a provided with the uneven portions 2, 3 and the like. Press fit. Then, as shown in FIG. 5B, by sequentially press-fitting, the end portion 5a of the tube body 5 is pressed inward (anti-radiation direction) and contracted (plastically deformed). The tube body 5 is sequentially press-fitted toward the throttle portion 10a. Through the press-fitting of the tubular body 5, a contracted tube that is narrowed sequentially from the inside 5b toward the end portion 5a and has the same shape (tapered shape) as the throttle portion 10a is processed. In the tube contraction process of the tubular body 5, the convex portion 2 and the like slide the outer peripheral surface 501, guide foreign matters such as dust and debris from the tubular body 5 to the concave portion 3 and the like, and have a deviation Q. Since the convex portions 2 and the like and the concave portions 3 and the like are formed, the foreign matters do not damage the outer peripheral surface 501 by sequentially guiding them to the end portion 5a of the outer peripheral surface 501 of the tubular body 5. There will be no injury to the tube processing. Further, since the convex portions 2 and the like are bulged and arranged as described above, the outer peripheral surface 501 does not generate a pressing force at a stretch and becomes a random pressing force. 501 and / or the precise processing of the tube body 5 and the ability to eliminate cracks, scratches, cracks, and the like caused by the processing, or to avoid damage and wear of the contraction die 10 are useful. The recesses 3 and the like are effective for retaining processing oil and guiding paths, and the recesses 3 and the like have a deviation Q and are connected so as to surround the projections 2 and the like with the recesses 3-1. Since it is provided, the effect as the holding and guiding path can be maximized. As this processing progresses sequentially, the contracted tube portion 6 b is formed in the tube body 5. Thereafter, as shown in FIG. 5C, the contraction die 10 is removed from the tubular body 5 to form an accurate and high-quality contraction section 6b. The shape of the contraction die 10 is an example. As another processing method, for example, there is a processing method in which the opening 100 of the contraction die 10 is fitted and sequentially press-fitted from the end portion 5a of the supported tube body 5 as described above to contract the tube. obtain. And it is optimal to coat the entire peripheral surface 10-1 of the contraction die 10. However, the coating process is in accordance with the above-described embodiment.
図３と、図６、また、図７−１〜図７−３、並びに図８−１と、図８−２において、２０は、孔２０−１と取付け内鍔片２０−２を備えたマンドレル２１の芯金片（ボール）で、この芯金片２０は、複数個を、ロッド２２を介して、マンドレル２１に連繋されている。この芯金片２０は、環状の外周面２０ａを備えているとともに、その環状と直交する両端部２０ｂ、２０ｂに向かって（芯金片２０の進行方向２０Ｂ１及び／又は後退方向２０Ｃ１において）、曲面形状を呈する。そして、この実施例では、複数個の芯金片２０が、連結具２３でロッド２２の支持されている。また、この外周面２０ａには、凸部２等と、凹部３等が形成されている。この凸部２等と、その深さ２０２、２０２ａ（高さＨ）、又は凹部３等の各構造は、前述した凸部２等と、凹部３等の構造と、また、その深さ２０２、２０２ａ、又はズレＱと同じ構造である。また、この芯金片２０の全周面２０ｃ（凸部２等と、凹部３等を含めた全周面）は、全体にコーティング加工することが最適である。そして、このコーティング加工は、前述の実施例に準ずる。 3, FIG. 6, FIG. 7-1 to FIG. 7-3, FIG. 8-1, and FIG. 8-2, 20 includes a hole 20-1 and a mounting inner flange piece 20-2. A plurality of cored bar pieces 20 (balls) of the mandrel 21 are connected to the mandrel 21 via a rod 22. The metal core piece 20 has an annular outer peripheral surface 20a and is curved toward both ends 20b and 20b orthogonal to the annular shape (in the traveling direction 20B1 and / or the retreating direction 20C1 of the metal core piece 20). Presents a shape. In this embodiment, a plurality of cored bar pieces 20 are supported by the rods 22 by the connecting tool 23. Moreover, the convex part 2 grade | etc., And the recessed part 3 grade | etc., Are formed in this outer peripheral surface 20a. Each structure of this convex part 2 etc. and its depth 202, 202a (height H) or the concave part 3 is the same as the above-mentioned convex part 2 etc., the structure of the concave part 3 etc., and its depth 202, 202a or the same structure as the shift Q. Moreover, it is optimal to coat the entire peripheral surface 20c (the entire peripheral surface including the convex portion 2 and the concave portion 3) of the core bar piece 20 as a whole. And this coating process is based on the above-mentioned Example.
この芯金片２０の加工状態を示した図７−１〜図７−３において、図７−１の如く、芯金片２０を、マンドレル２１に連繋した状態で、真直ぐな管体５（直管）に、略密着状態で挿入する。そして、図７−２の如く、この芯金片２０とマンドレル２１が挿入された管体５を、曲げ加工機械（ワイパーダイ２５と、ベンディングフォーム２６、また、クランプダイ２７）を利用して曲げる。この曲げ加工機械内に、芯金片２０とマンドレル２１が挿入された管体５を差込み、このベンディングフォーム２６を回転しながら、ワイパーダイ２５を差込み、かつ管体５及び芯金片２０とマンドレル２１を前進させる。この加工作業を、順次、進行することで、ロッド２２の撓みと、芯金片２０のベンディングフォーム２６側への曲面可動を利用し、管体５を曲げていく。この曲げ加工の過程において、凸部２等が、内周面５００を摺設し、かつ管体５からの埃、屑等の異物を凹部３等に導き、かつズレＱを持って、この凸部２等と凹部３等が形成されていることから、順次、管体５の内周面５００の後側５ｃの隙間５ｃ１に導くことで、この異物が、内周面５００が傷を付けることなく、しかも曲げ加工の傷害となることは皆無である。また、この凸部２等が、前述の如く、膨出配設されていることから、内周面５００に、一気な曲げ押圧力が発生せず、かつランダムな曲げ押圧力となることから、この内周面５００及び／又は管体５の精緻な加工と、加工に起因するヒビリとか、擦り傷、又は亀裂発生等を解消できること、又は芯金片２０の損傷、磨耗発生回避に役立ち有益である。また、この凹部３等は加工油の保留と、誘導路として有効であり、またこの凹部３等は、ズレＱをもち、かつ凹部３−１で、この凸部２等を囲繞するように連設されているので、前記保留、誘導路としての効果を最大限に発揮できる。そして、この曲げ角度が、所定の形状となった状態で、管体５の曲げ加工機械等の管体支持器具の一部及び／又は複数を取外す、移動する等の所定の作業により、管体５を取外す。この一例の作業を介して、最終的に、図７−３の如く、管体５より芯金片２０とマンドレル２１を脱抜することで、曲げ加工が終了する。また、この管体５より芯金片２０とマンドレル２１を脱抜する作業でも、前述の図７−２の曲げ加工時の特徴が発揮できる。そして、この曲げ加工で、正確で、かつ品質の良い曲管６ｃが形成される。尚、この芯金片２０の形状は一例である。 In FIGS. 7-1 to 7-3 showing the processing state of the core bar piece 20, the straight pipe body 5 (straight pipe 5) is connected to the mandrel 21 as shown in FIG. Into the tube) in a state of close contact. Then, as shown in FIG. 7-2, the tubular body 5 in which the core bar piece 20 and the mandrel 21 are inserted is bent using a bending machine (wiper die 25, bending form 26, and clamp die 27). . The pipe body 5 in which the core piece 20 and the mandrel 21 are inserted is inserted into the bending machine, the wiper die 25 is inserted while rotating the bending form 26, and the pipe body 5 and the core piece 20 and the mandrel are inserted. Advance 21. By sequentially proceeding with these processing operations, the tubular body 5 is bent using the bending of the rod 22 and the curved movement of the core piece 20 toward the bending form 26 side. In this bending process, the convex portion 2 and the like slide the inner peripheral surface 500, guide foreign matter such as dust and debris from the pipe body 5 to the concave portion 3 and the like, and have a deviation Q. Since the portion 2 and the like and the concave portion 3 and the like are formed, the foreign matter damages the inner peripheral surface 500 by sequentially guiding it to the gap 5c1 on the rear side 5c of the inner peripheral surface 500 of the tubular body 5. In addition, there is no bending damage. In addition, since the convex portions 2 and the like are bulged and arranged as described above, no sudden bending pressing force is generated on the inner peripheral surface 500 and random bending pressing force is generated. It is useful for the fine processing of the inner peripheral surface 500 and / or the tube body 5 and the elimination of cracks, scratches, cracks, etc. caused by the processing, or the avoidance of damage and wear of the core piece 20. . The recesses 3 and the like are effective for retaining processing oil and guiding paths, and the recesses 3 and the like have a deviation Q and are connected so as to surround the projections 2 and the like with the recesses 3-1. Since it is provided, the effect as the holding and guiding path can be maximized. Then, in a state where the bending angle is in a predetermined shape, the pipe body is removed by a predetermined operation such as removing or moving a part and / or a plurality of pipe support devices such as a bending machine of the pipe body 5. 5 is removed. Through this example of work, finally, the core metal piece 20 and the mandrel 21 are removed from the tubular body 5 as shown in FIG. Further, even in the operation of removing the core piece 20 and the mandrel 21 from the tubular body 5, the above-described characteristics at the time of bending in FIG. 7-2 can be exhibited. Then, an accurate and high-quality bent pipe 6c is formed by this bending process. The shape of the core piece 20 is an example.
１ 拡管パンチ
１−１ 表面
１ａ 取付管部
１ａ１ 本体部位
１ｂ 第一段部
１ｃ 中管部
１ｄ 収斂傾斜管部
１ｅ 頂面部
１ｅ１ 周辺部位
２ 凸部
２−１ 凸部
２００ 長径
２０１ 短径
２０２ 深さ
２０３ 上端
２ａ 凸部
２ａ−１ 凸部
２００ａ 長径
２０２ａ 深さ
２０３ａ 上端
３ 凹部
３ａ 凹部
３−１ 凹部
３−２ 凹部
５ 管体
５ａ 端部
５ｂ 内部
５ｃ 後側
５ｃ１ 隙間
５００ 内周面
５０１ 外周面
６ａ 拡管部
６ｂ 縮管部
６ｃ 曲管
１０ 縮管ダイス
１０−１ 全周面
１００ 開口
１０ａ 絞り部
１０ｂ 逃し部
２０ 芯金片
２０−１ 孔
２０−２ 内鍔片
２０ａ 外周面
２０ｂ 端部
２０ｃ 全周面
２０Ｂ１ 進行方向
２０Ｃ１ 後退方向
２１ マンドレル
２２ ロッド
２３ 連結具
２５ ワイパーダイ
２６ ベンディングフォーム
２７ クランプダイ
Ａ 進行方向
Ｂ 環状方向
Ｈ 高さ
Ｑ ズレ
Ｒ 裾部間
Ｒ１ 裾部間
DESCRIPTION OF SYMBOLS 1 Tube expansion punch 1-1 Surface 1a Mounting pipe part 1a1 Main body part 1b First step part 1c Middle pipe part 1d Converging inclination pipe part 1e Top surface part 1e1 Peripheral part 2 Convex part 2-1 Convex part 200 Major diameter 201 Minor diameter 202 Depth 203 upper end 2a convex part 2a-1 convex part 200a major axis 202a depth 203a upper end 3 concave part 3a concave part 3-1 concave part 3-2 concave part 5 tubular body 5a end part 5b inner side 5c rear side 5c1 gap 500 inner peripheral surface 501 outer peripheral face 6a Expanded portion 6b Reduced tube portion 6c Curved tube 10 Reduced tube die 10-1 All-around surface 100 Opening 10a Restricted portion 10b Relief portion 20 Core metal piece 20-1 Hole 20-2 Inner collar piece 20a Outer peripheral surface 20b End portion 20c Entire circumference Surface 20B1 Traveling direction 20C1 Backward direction 21 Mandrel 22 Rod 23 Connecting tool 25 Wiper die 26 Bending foam 27 Clamp Lee A traveling direction B annular direction H height Q deviation R skirt between inter R1 skirt
Claims (5)
この楕円形状の凸部の寸法は、楕円形状の長径が、略１．３５〜２．８５ｍｍ程度で、楕円形状の短径が、略０．３５〜１．５ｍｍ程度であって、かつ深さが略０．０２５〜略０．１５ｍｍ程度とする構成としたパイプ加工冶具の芯金片。 It is a metal core piece of the pipe processing jig according to claim 2,
The size of the elliptical convex portion is such that the major axis of the elliptical shape is approximately 1.35 to 2.85 mm, the minor axis of the elliptical shape is approximately 0.35 to 1.5 mm, and the depth. Is a core piece of a pipe processing jig having a configuration of about 0.025 to about 0.15 mm.
前記楕円形状の凸部の寸法は、楕円形状の長径が、略１．３５〜２．８５ｍｍ程度で、楕円形状の短径が、略０．３５〜１．５ｍｍ程度であって、かつ深さが略０．０２５〜略０．１５ｍｍ程度とし、
また、前記円形状の凸部の寸法は、円形状の直径が、略０．４〜１．２ｍｍ程度であって、かつ深さが０．０２５〜０．１５ｍｍ程度とする構成としたパイプ加工冶具の芯金片。 It is a metal core piece of the pipe processing jig according to claim 3,
The elliptical convex portion has a major axis of about ellipse of about 1.35 to 2.85 mm, a minor axis of the ellipse of about 0.35 to 1.5 mm, and a depth. Is about 0.025 to about 0.15 mm,
In addition, the dimension of the circular convex portion is such that the diameter of the circular shape is about 0.4 to 1.2 mm and the depth is about 0.025 to 0.15 mm. Jig core piece.
前記楕円形状の凸部と、前記円形状の凸部との縦列方向の配列が、前記進行方向において、ズレた位置で設けられている構成としたパイプ加工冶具の芯金片。 It is a metal core piece of the pipe processing jig according to claim 3,
A metal core piece of a pipe processing jig having a configuration in which an arrangement in a column direction of the elliptical convex portion and the circular convex portion is provided at a shifted position in the traveling direction.
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| JP2009210284A JP4684346B2 (en) | 2008-12-02 | 2009-09-11 | Structure of core piece of pipe processing jig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008307575 | 2008-12-02 | ||
| JP2009210284A JP4684346B2 (en) | 2008-12-02 | 2009-09-11 | Structure of core piece of pipe processing jig |
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| JP4684346B2 JP4684346B2 (en) | 2011-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102061602B1 (en) * | 2019-06-19 | 2020-01-03 | 송윤자 | Method and apparatus for restoration of air conditioner buried pipe |
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|---|---|---|---|---|
| JPS4911767A (en) * | 1972-05-15 | 1974-02-01 | ||
| JPH0683131U (en) * | 1993-05-07 | 1994-11-29 | アカマツフォーシス株式会社 | Forging and forging tools with anti-seizure processing |
| JPH0839108A (en) * | 1994-07-27 | 1996-02-13 | Sanyo Special Steel Co Ltd | Metallic tube with engraved pattern on inside surface, manufacture thereof and mandrel for manufacturing the tube |
| JP2001137958A (en) * | 1999-11-08 | 2001-05-22 | Showa Alum Corp | Mandrel for bending and bending method using the same |
-
2009
- 2009-09-11 JP JP2009210284A patent/JP4684346B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911767A (en) * | 1972-05-15 | 1974-02-01 | ||
| JPH0683131U (en) * | 1993-05-07 | 1994-11-29 | アカマツフォーシス株式会社 | Forging and forging tools with anti-seizure processing |
| JPH0839108A (en) * | 1994-07-27 | 1996-02-13 | Sanyo Special Steel Co Ltd | Metallic tube with engraved pattern on inside surface, manufacture thereof and mandrel for manufacturing the tube |
| JP2001137958A (en) * | 1999-11-08 | 2001-05-22 | Showa Alum Corp | Mandrel for bending and bending method using the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102061602B1 (en) * | 2019-06-19 | 2020-01-03 | 송윤자 | Method and apparatus for restoration of air conditioner buried pipe |
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