JP2007283453A - Method of manufacturing cylindrical member - Google Patents

Method of manufacturing cylindrical member Download PDF

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JP2007283453A
JP2007283453A JP2006115269A JP2006115269A JP2007283453A JP 2007283453 A JP2007283453 A JP 2007283453A JP 2006115269 A JP2006115269 A JP 2006115269A JP 2006115269 A JP2006115269 A JP 2006115269A JP 2007283453 A JP2007283453 A JP 2007283453A
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imposition
portions
hole
edge
manufacturing
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Toshio Narita
敏雄 成田
Toshihide Seo
敏秀 瀬尾
Hirokazu Tsuji
宏和 辻
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DEIPUTO KK
Taiho Kogyo Co Ltd
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DEIPUTO KK
Taiho Kogyo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To manufacture a solid core 1, causing no burr in the edges 2B, 2C at both ends of a through hole 2. <P>SOLUTION: After a body part 3 of the core 1, a flange part 4 and a cutout part 4A are formed by forging, the through hole 2 of a deformed shape passing in the axial direction is bored in the body part 3. After that, The cutout part A is held from above and below by a pair of upper and lower flap punches 5A, 5B of a first mold 5, and both edges 4D, 4E of the cutout part 4A are flapped by the both flapping parts 5C, 5D. Subsequently, both edge parts 2B, 2C of the through hole 2 are held from above and below by a pair of upper and lower flap punches 6A, 6B of a second mold 6, and both edge parts 2B, 2C are flapped by both flap parts 6C, 6D. Thus, the occurrence of burr in the respective edge parts 2B, 2C, 4D, 4E can be favorably prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は筒状部材の製造方法に関し、より詳細には、例えばソレノイドのコアを製造する場合に好適な製造方法に関する。   The present invention relates to a method for manufacturing a cylindrical member, and more particularly to a manufacturing method suitable for manufacturing a solenoid core, for example.

従来、軸方向に異形の貫通孔を備えて概略円筒状に形成されたソレノイドのコアは公知である。
また、内周面に縦溝を有する筒状部材の製造方法として例えば特許文献１が知られている。
特開平１１−３１４１２８号公報 2. Description of the Related Art Conventionally, a solenoid core having a generally cylindrical shape with an axially deformed through hole is known.
Moreover, for example, Patent Document 1 is known as a method of manufacturing a cylindrical member having a longitudinal groove on the inner peripheral surface.
JP-A-11-314128

ところで、従来のコアの製造方法においては、パンチによって円柱状の基材を軸方向に打ち抜いて貫通孔を形成したり、あるいは上記特許文献１においては、成形用の押し込みポンチを用いて内周部に縦溝を成形するようにしていたものである。そのため、従来の製造方法においては、筒状部材の貫通孔における軸方向の端部にバリが生じやすいという欠点があった。   By the way, in the conventional core manufacturing method, a cylindrical base material is punched in the axial direction by a punch to form a through hole, or in Patent Document 1, an inner peripheral portion is formed by using a molding push punch. The vertical grooves are formed in the above. For this reason, the conventional manufacturing method has a drawback in that burrs are likely to occur at the axial ends of the through holes of the cylindrical member.

上述した事情に鑑み、請求項１に記載した第１の本発明は、軸方向の貫通孔を有する概略筒状の本体部を備えた筒状部材の製造方法であって、
異なる曲率半径の２箇所のＲ部分（Ｒ１、Ｒ２）を有する面付けパンチを上記貫通孔の一端となる縁部に押圧させて、該縁部に上記面付けパンチの形状に倣った２箇所のＲ部分（Ｒ１’、Ｒ２’）を形成して、該Ｒ部分の一方と交差するように端面を平面状に切削加工することにより、上記各縁部に面付けを施したものである。
また、請求項２に記載した第２の本発明は、軸方向の貫通孔を有する概略筒状の本体部と、この本体部の外周部に設けたフランジ部と、このフランジ部に形成した軸方向の切欠き部とを備えた筒状部材の製造方法であって、
上記本体部、フランジ部および切欠き部を形成した後に、上記貫通孔の軸方向の両端となる縁部あるいは上記切欠き部における軸方向の両端となる縁部に、順次あるいは同時に軸方向の両端側から各一対の面付けパンチの面付け部を押圧させて、上記貫通孔の両端となる縁部および上記切欠き部における軸方向の両端となる縁部に面付けを施したものである。 In view of the circumstances described above, the first aspect of the present invention described in claim 1 is a method for manufacturing a cylindrical member including a substantially cylindrical main body portion having an axial through hole,
An imposition punch having two R portions (R1, R2) having different radii of curvature is pressed against an edge serving as one end of the through-hole, and two edges imitating the shape of the imposition punch on the edge. An R portion (R1 ′, R2 ′) is formed, and an end face is cut into a flat shape so as to intersect with one of the R portions, thereby imposing each edge.
A second aspect of the present invention according to claim 2 is a substantially cylindrical main body portion having an axial through hole, a flange portion provided on an outer peripheral portion of the main body portion, and a shaft formed on the flange portion. A method of manufacturing a cylindrical member provided with a notch in a direction,
After forming the main body portion, the flange portion, and the notch portion, the axial end portions of the through hole or the axial end portions of the notch portion are sequentially or simultaneously placed on the axial end portions of the through hole. The imposition portions of each pair of imposition punches are pressed from the side, and the edge portions serving as both ends of the through hole and the edge portions serving as both ends in the axial direction of the notch portions are provided.

上述した構成によれば、上記筒状部材の縁部に面付けをしているので、該縁部にバリが残留することを良好に防止できる。
したがって、従来と比較して、縁部にバリが生じない筒状部材の製造方法を提供できる。 According to the configuration described above, since the edge of the cylindrical member is imbedded, it is possible to satisfactorily prevent burrs from remaining on the edge.
Therefore, it is possible to provide a method for manufacturing a cylindrical member that does not generate burrs at the edge as compared with the conventional case.

以下、本発明の実施例である製造方法を説明する前に、先ず本実施例の製造方法によって製造した製品としてのソレノイドのコア１の構成を説明する。
すなわち、図１〜図４において、１はソレノイドに用いる筒状部材としてのコアである。このコア１は、軸心を囲繞して異形の貫通孔２を形成した円筒状の本体部３と、この本体部３の外周部における軸方向の一端に突設した円板状のフランジ部４とを備えている。
本体部３の内周面となる上記貫通孔２は、円周方向において相互に１８０度ずらした位置に一対の軸方向溝２Ａを備えている。これらの軸方向溝２Ａは、本体部３の軸方向全域にわたって直線状に形成されており、これら軸方向溝２Ａの断面は概略Ｖ字形となっている。上記貫通孔２における両軸方向溝２Ａの間となる内周面は、軸心を中心とした同一直径の孔の内周面によって構成している。このように、貫通孔２の断面形状は異形の非円形となっている。 Before explaining the manufacturing method according to the embodiment of the present invention, the configuration of the solenoid core 1 as a product manufactured by the manufacturing method according to the present embodiment will be described first.
That is, in FIGS. 1-4, 1 is a core as a cylindrical member used for a solenoid. The core 1 includes a cylindrical main body portion 3 that surrounds an axial center and has a deformed through hole 2, and a disc-shaped flange portion 4 that protrudes from one end of the outer peripheral portion of the main body portion 3 in the axial direction. And.
The through hole 2 serving as the inner peripheral surface of the main body 3 includes a pair of axial grooves 2A at positions shifted from each other by 180 degrees in the circumferential direction. These axial grooves 2A are formed linearly over the entire axial direction of the main body 3, and the cross section of these axial grooves 2A is substantially V-shaped. The inner peripheral surface between the two axial grooves 2A in the through hole 2 is constituted by an inner peripheral surface of a hole having the same diameter centered on the axis. Thus, the cross-sectional shape of the through hole 2 is an irregular non-circular shape.

また、上記フランジ部４の円周方向所定位置に、軸方向に貫通するコ字形の切欠き部４Ａを形成している。この切欠き部４Ａは、上記２箇所の軸方向溝２Ａに対して、フランジ部４の円周方向において９０度ずれた位置に形成している。
フランジ部４の外周面４Ｂは、軸方向の断面形状が円弧状となるように形成されており、それによってフランジ部４の両端面と外周面との境界となる縁部４Ｃ、４Ｃ’が鈍角となるようにしている。
上記構成のコア１においては、上記貫通孔２における軸方向の両端部に該貫通孔２の断面形状と同じ縁部２Ｂ、２Ｃが形成される。また、フランジ部４の切欠き部４Ａと両端面の境界部（切欠き部４Ａの軸方向の両端部）には、コ字形をした一対の縁部４Ｄ、４Ｅが形成されることになる。
後に詳述するが、本実施例においては、これら４箇所の縁部２Ｂ、２Ｃおよび４Ｄ、４Ｅを軸心に対して所定角度だけ傾斜した傾斜面とする面付け処理を施してあり、それによって、これら４箇所の縁部の断面が直角にならないようにしている。 Further, a U-shaped notch 4A penetrating in the axial direction is formed at a predetermined position in the circumferential direction of the flange portion 4. The cutout portion 4A is formed at a position shifted by 90 degrees in the circumferential direction of the flange portion 4 with respect to the two axial grooves 2A.
The outer peripheral surface 4B of the flange portion 4 is formed so that the cross-sectional shape in the axial direction is an arc shape, whereby the edges 4C and 4C ′ serving as the boundary between the both end surfaces of the flange portion 4 and the outer peripheral surface are obtuse angles. It is trying to become.
In the core 1 having the above-described configuration, edges 2B and 2C having the same cross-sectional shape as the through-hole 2 are formed at both end portions in the axial direction of the through-hole 2. In addition, a pair of edge portions 4D and 4E having a U-shape are formed at the boundary portion between the notch portion 4A of the flange portion 4 and both end surfaces (both end portions in the axial direction of the notch portion 4A).
As will be described in detail later, in the present embodiment, the four edge portions 2B, 2C, 4D, and 4E are subjected to an imposition process with inclined surfaces inclined by a predetermined angle with respect to the axis, thereby The cross-sections of these four edge portions are not perpendicular.

そして、本実施例においては、上記構成のコア１を次のようにして製造している。
すなわち、先ず材料となる棒状の材料を準備して、それを鍛造して円柱状の本体部３を形成するとともにフランジ部４と切欠き部４Ａを形成する。次に、上記本体部３の軸心にポンチ等によって軸方向の異形の貫通孔２を穿設する。
そして、その後に、上述した４箇所の縁部２Ｂ、２Ｃ、４Ｄ、４Ｅに対して図５に示した第１型５および第２型６によって順次軸方向両端側から面付けを行う。より詳細には、上述したように材料を鍛造して本体部３、貫通孔２とフランジ部４および切欠き部４Ａを形成したら、コア１の軸心が鉛直方向となるように図示しない保持手段によって本体部３を保持する。 In this embodiment, the core 1 having the above-described configuration is manufactured as follows.
That is, first, a rod-shaped material as a material is prepared and forged to form a cylindrical main body portion 3 and a flange portion 4 and a notch portion 4A. Next, a deformed through hole 2 in the axial direction is formed in the axial center of the main body 3 by a punch or the like.
Then, the four edge portions 2B, 2C, 4D, and 4E described above are sequentially faced from both axial ends by the first mold 5 and the second mold 6 shown in FIG. More specifically, after the material is forged as described above to form the main body 3, the through hole 2, the flange 4 and the notch 4A, the holding means (not shown) so that the axis of the core 1 is in the vertical direction. Holds the main body 3.

この状態において、先ず第１型５を構成する上下一対の面付けパンチ５Ａ、５Ｂにより、切欠き部４Ａの両縁部４Ｄ、４Ｅを上下方向からつまり軸方向両端側から挟持する。
ここで、面付けパンチ５Ａ、５Ｂは同じ寸法の四角柱状に形成してあり、それらの先端となる縁部には、上記縁部４Ｅ、４Ｄの形状に合わせてコ字形の面付け部５Ｃ、５Ｄを形成している。これらの面付け部５Ｃ、５Ｄは面付けパンチ５Ａ、５Ｂの軸方向（図面上の上下方向）に対して所定角度だけ傾斜させている。
このように構成した上下一対の面付けパンチ５Ａ、５Ｂを所要量だけ前進させることにより、切欠き部４Ａの両縁部４Ｅ、４Ｄを上下方向（軸方向両端側）から挟持するので、上方側の面付けパンチ５Ａの面付け部５Ｃが縁部４Ｅに押圧されるとともに、下方側の面付けパンチ５Ｂの面付け部５Ｄが縁部４Ｄに押圧される。そのため、両面付け部５Ｃ、５Ｄの傾斜角度に倣って両縁部４Ｅ、４Ｄは軸方向に対して傾斜する傾斜面となるように塑性変形されて面付けが施される。 In this state, first, the two edge portions 4D and 4E of the notch portion 4A are sandwiched from the up and down direction, that is, from both axial ends by the pair of upper and lower imposition punches 5A and 5B constituting the first die 5.
Here, the imposition punches 5A and 5B are formed in the shape of a quadrangular prism having the same dimensions, and the U-shaped imposition portions 5C, which match the shapes of the edge portions 4E and 4D, are formed on the edges serving as the tips thereof. 5D is formed. These imposition portions 5C and 5D are inclined by a predetermined angle with respect to the axial direction (vertical direction in the drawing) of the imposition punches 5A and 5B.
By moving the pair of upper and lower imposition punches 5A and 5B configured in this way by a required amount, both edges 4E and 4D of the notch 4A are clamped from the vertical direction (both ends in the axial direction). The imposition part 5C of the imposition punch 5A is pressed against the edge 4E, and the imposition part 5D of the lower imposition punch 5B is pressed against the edge 4D. Therefore, the two edge portions 4E and 4D are plastically deformed so as to be inclined surfaces with respect to the axial direction following the inclination angles of the double-sided portions 5C and 5D, and are impositioned.

この後、第１型５を上下の面付けパンチ５Ａ、５Ｂを基の位置まで後退させて切欠き部４Ａの縁部４Ｅ、４Ｄから面付け部５Ｃ、５Ｄを離隔させる。
次に、第２型６を構成する上下一対の面付けパンチ６Ａ、６Ｂにより貫通孔２の軸方向の両端となる縁部２Ｂ、２Ｃを上下方向（軸方向両端側）から挟持する。
ここで、面付けパンチ６Ａ、６Ｂは同じ寸法の棒状に形成してあり、かつそれらの断面形状は縁部２Ｂ、２Ｃ（貫通孔２の断面形状）に倣った異形の円形にしている。そして、面付けパンチ６Ａ、６Ｂの先端となる縁部は面付け部６Ｃ、６Ｄとしてあり、これらの面付け部６Ｃ、６Ｄは面付けパンチ６Ａ、６Ｂの軸方向に対して所定角度傾斜させている。
このように構成した上下一対の面付けパンチ６Ａ、６Ｂを所要量だけ前進させることにより、貫通孔２の両縁部２Ｂ、２Ｃを上下方向（軸方向両端側）から挟持するので、上方側の面付けパンチ５Ａの面付け部６Ｃが縁部２Ｃに押圧されるとともに、下方側の面付けパンチ６Ｂの面付け部６Ｄが縁部２Ｂに押圧される。そのため、両面付け部６Ｃ、６Ｄの傾斜角度に倣って両縁部２Ｃ、２Ｂは軸方向に対して傾斜する傾斜面となるように塑性変形されて面付けが施される。
この後、第２型６の両面付けパンチ６Ａ、６Ｂを基の位置まで後退させて両縁部２Ｃ、２Ｂから面付け部６Ｃ、６Ｄから離隔させ、次に図示しない保持手段によるコア１の保持状態を解除して該コア１を取り外して、コア１の製造が終了する。
このように本実施例では、先ずコア１の切欠き部４Ａの両縁部４Ｅ、４Ｄに対して第１型５により面付けを行い、次にコア１の貫通孔２の両縁部２Ｃ、２Ｂに対して第２型６によって面付けを行うようにしている。
これにより、コア１の各縁部２Ｂ、２Ｃ、４Ｄ、４Ｅの全てに面付けが施されるようになっている。 Thereafter, the first die 5 is moved back and forth with the upper and lower imposition punches 5A and 5B to separate the imposition portions 5C and 5D from the edges 4E and 4D of the notch 4A.
Next, the edge portions 2B and 2C which are both ends in the axial direction of the through-hole 2 are sandwiched from the vertical direction (both ends in the axial direction) by a pair of upper and lower imposition punches 6A and 6B constituting the second die 6.
Here, the imposition punches 6A and 6B are formed in a bar shape having the same dimensions, and their cross-sectional shapes are irregularly shaped circles following the edges 2B and 2C (the cross-sectional shape of the through hole 2). And the edge part used as the front-end | tip of imposition punch 6A, 6B is imposition part 6C, 6D, and these imposition parts 6C, 6D are made to incline a predetermined angle with respect to the axial direction of imposition punch 6A, 6B. Yes.
By moving the pair of upper and lower imposition punches 6A and 6B configured in this way by a required amount, both edges 2B and 2C of the through hole 2 are clamped from the vertical direction (both ends in the axial direction). The imposition portion 6C of the imposition punch 5A is pressed against the edge portion 2C, and the imposition portion 6D of the lower imposition punch 6B is pressed against the edge portion 2B. Therefore, the two edge portions 2C and 2B are plastically deformed so as to be inclined surfaces with respect to the axial direction in accordance with the inclination angle of the double-sided portions 6C and 6D, and are impositioned.
Thereafter, the double-sided punches 6A and 6B of the second die 6 are retracted to their original positions so as to be separated from both the edge portions 2C and 2B from the imposition portions 6C and 6D, and then the core 1 is held by a holding means (not shown). The state is released, the core 1 is removed, and the manufacture of the core 1 is completed.
As described above, in this embodiment, first, both edges 4E and 4D of the notch 4A of the core 1 are faced by the first mold 5, and then both edges 2C of the through hole 2 of the core 1 are provided. 2B is impositioned by the second mold 6.
Thereby, imposition is given to all the edge portions 2B, 2C, 4D, and 4E of the core 1.

以上のように、本実施例のコア１の製造方法においては、第１型５と第２型６とによって、最後の製造工程において軸方向孔２の両縁部２Ｂ、２Ｃおよび切欠き部４Ａの両縁部４Ｄ、４Ｅに順次面付けを行っている。そのため、製造後のコア１における軸方向孔２の両端である縁部２Ｂ、２Ｃと切欠き部４Ａの縁部４Ｄ、４Ｅにバリが生じることを良好に防止することができる。したがって、製品としてのソレノイドのコア１は、その後の運搬や組み立ての際に作業者が怪我をし難く扱いやすいものとなっている。
なお、上記実施例においては、先ず切欠き部４Ａの両縁部４Ｄ、４Ｅに面付けを施し、次に貫通孔２の両縁部２Ｂ、２Ｃに面付けを施しているが、これとは逆の作業工程で各縁部２Ｂ、２Ｃ、４Ｄ、４Ｅに面付けを施しても良い。
また、上記実施例における下方側の面付けパンチ５Ｂ、６Ｂを一体にした下型Ｘを製作するとともに、上記実施例における上方側の面付けパンチ５Ａ、６Ａを一体にした上型Ｙを製作して、これら下型Ｘと上型Ｙとによって４箇所の縁部２Ｂ、２Ｃ、４Ｄ、４Ｅを上下から同時に挟持して、それら４箇所に同時に面付けを施すようにしても良い。 As described above, in the manufacturing method of the core 1 of the present embodiment, the first mold 5 and the second mold 6 are used to form both edges 2B and 2C of the axial hole 2 and the notch 4A in the final manufacturing process. The two edges 4D and 4E are sequentially impositioned. Therefore, it is possible to satisfactorily prevent burrs from occurring at the edges 2B and 2C, which are both ends of the axial hole 2 in the core 1 after manufacture, and the edges 4D and 4E of the notch 4A. Therefore, the core 1 of the solenoid as a product is easy to handle because it is difficult for an operator to be injured during subsequent transportation and assembly.
In the above embodiment, the edges 4D and 4E of the notch 4A are first impositioned, and then the edges 2B and 2C of the through hole 2 are impositioned. The edges 2B, 2C, 4D, and 4E may be impositioned in the reverse work process.
In addition, the lower die X in which the lower side imposition punches 5B and 6B in the above embodiment are integrated is manufactured, and the upper die Y in which the upper side imposition punches 5A and 6A in the above embodiment are integrated is manufactured. Then, the four edge portions 2B, 2C, 4D, and 4E may be sandwiched simultaneously from above and below by the lower mold X and the upper mold Y, and the four areas may be imposed simultaneously.

次に、図６は本発明の第２実施例を示したものである。上述した本発明の第１実施例においては、第１型５および第２型６によって製造工程の最後にコア１の縁部２Ｂ、２Ｃ、４Ｄ、４Ｅに面付けを施しているが、この第２実施例においては、第１型５および第２型６による面付け後に該面付けした箇所と交差するように隣接位置の端面を切削加工するようにしたものである。
この第２実施例においては、上記第１実施例で示した第１型５および第２型６の各面付け部５Ｃ、５Ｄ、６Ｃ、６Ｄは単一の傾斜面ではなく複数の傾斜面を組み合わせた形状となっている。つまり、図６に第２型６の面付けパンチ６Ａ用として例示したように、面付けパンチ６Ａの面付け部６Ｃは、内方側と外方側の傾斜角度が異なる２つの傾斜面６ｅ、６ｆを形成するとともに、それらを接続する断面円弧状のＲ部分（Ｒ１）および最も軸心側のＲ部分（Ｒ２）とから構成されている。ここで、Ｒ１の曲率半径はＲ２の曲率半径よりも大きく設定されている。なお、傾斜面６ｆは省略しても良い。
このように構成した第２型６の面付け部６Ｃによって、上述した第１実施例のように貫通孔２の縁部２Ｃに面付けを施すと、縁部２Ｃは、面付け部６Ｃの断面形状に倣って内外で傾斜角度が異なる２つの傾斜面２Ｄ、２Ｅと２箇所の断面円弧状のＲ部（Ｒ１’、Ｒ２’）が形成される。ここで、Ｒ１’の曲率半径は他方のＲ２’の曲率半径よりも大きくなっている。
この後、この第２実施例においては、両傾斜面２Ｄ、２Ｅの間となるＲ部（曲率半径が大きなＲ１’）と交差するように本体部３の端面３Ａを軸心と直交方向に平面状に切削加工を施す。また、その他の縁部２Ｂ、４Ｄ、４Ｅについても同様にして曲率半径が大きなＲ部分（Ｒ１’）と交差するように端面に切削加工を施して製造工程を終了するようにしている。
このような第２実施例によっては、切削加工の始点及び終点に刃具がスムーズに出入りできるようになると考えられ、よって各縁部２Ｂ、２Ｃ、４Ｄ、４Ｅにバリが生じることを良好に防止することができ、上記第１実施例と同様の作用・効果を得ることができる。
なお、この第２実施例においては、２箇所のＲ部分（Ｒ１’、Ｒ２’）の間に傾斜面２Ｄが形成されていたが、この傾斜面２Ｄを省略して上記２箇所のＲ部分（Ｒ１’、Ｒ２’）が接続されるように面付けを施しても良い。 Next, FIG. 6 shows a second embodiment of the present invention. In the first embodiment of the present invention described above, the edges 2B, 2C, 4D, and 4E of the core 1 are faced by the first mold 5 and the second mold 6 at the end of the manufacturing process. In the second embodiment, after the imposition by the first mold 5 and the second mold 6, the end face at the adjacent position is cut so as to intersect with the impositioned portion.
In the second embodiment, the imposition portions 5C, 5D, 6C, and 6D of the first mold 5 and the second mold 6 shown in the first embodiment are not a single inclined surface but a plurality of inclined surfaces. It has a combined shape. That is, as illustrated for the imposition punch 6A of the second mold 6 in FIG. 6, the imposition portion 6C of the imposition punch 6A has two inclined surfaces 6e having different inclination angles on the inner side and the outer side, 6f is formed, and is composed of an R portion (R1) having an arcuate cross section and an R portion (R2) on the most axial side connecting them. Here, the radius of curvature of R1 is set larger than the radius of curvature of R2. The inclined surface 6f may be omitted.
When the edge portion 2C of the through-hole 2 is impositioned by the imposition portion 6C of the second mold 6 configured as described above as in the first embodiment described above, the edge portion 2C is a cross section of the imposition portion 6C. Following the shape, two inclined surfaces 2D and 2E having different inclination angles inside and outside and two R portions (R1 ′, R2 ′) having a circular arc in cross section are formed. Here, the curvature radius of R1 ′ is larger than the curvature radius of the other R2 ′.
Thereafter, in the second embodiment, the end surface 3A of the main body 3 is flattened in a direction orthogonal to the axis so as to intersect the R portion (R1 ′ having a large curvature radius) between the two inclined surfaces 2D and 2E. Cut into a shape. In addition, the other edge portions 2B, 4D, and 4E are similarly cut to the end surfaces so as to intersect the R portion (R1 ′) having a large curvature radius, and the manufacturing process is completed.
According to the second embodiment, it is considered that the cutting tool can smoothly enter and exit the starting point and the end point of the cutting process, and thus, it is possible to satisfactorily prevent burrs from being generated at the edges 2B, 2C, 4D, and 4E. The same operation and effect as the first embodiment can be obtained.
In the second embodiment, the inclined surface 2D is formed between the two R portions (R1 ′, R2 ′). However, the inclined surface 2D is omitted and the two R portions ( Imposition may be performed so that R1 ′ and R2 ′) are connected.

本発明の実施例である製造方法によって製造したコア１の斜視図。The perspective view of the core 1 manufactured with the manufacturing method which is an Example of this invention. 図１に示したコアの軸方向の一端側からの正面図。The front view from the one end side of the axial direction of the core shown in FIG. 図１に示したコアの軸方向の他端側からの正面図。The front view from the other end side of the axial direction of the core shown in FIG. 図２のＩＶ―ＩＶ線に沿う断面図。Sectional drawing which follows the IV-IV line of FIG. 図１に示したコアを製造する際の製造工程を示す断面図。Sectional drawing which shows the manufacturing process at the time of manufacturing the core shown in FIG. 本発明の第２実施例を示す製造工程の要部の拡大断面図。The expanded sectional view of the principal part of the manufacturing process which shows 2nd Example of this invention.

符号の説明Explanation of symbols

１…コア （筒状部材） ２…貫通孔
２Ｂ…縁部 ２Ｃ…縁部
３…本体部 ４…フランジ部
４Ａ…切欠き部 ４Ｄ…縁部
４Ｅ…縁部 ５Ａ…面付けパンチ
５Ｂ…面付けパンチ ５Ｃ…面付け部
５Ｄ…面付け部 ６Ａ…面付けパンチ
６Ｂ…面付けパンチ ６Ｃ…面付け部
６Ｄ…面付け部 Ｒ１、Ｒ２…Ｒ部
Ｒ１’、Ｒ２’…縁部２ＣのＲ部 DESCRIPTION OF SYMBOLS 1 ... Core (tubular member) 2 ... Through-hole 2B ... Edge part 2C ... Edge part 3 ... Main-body part 4 ... Flange part 4A ... Notch part 4D ... Edge part 4E ... Edge part 5A ... Imposition punch 5B ... Imposition Punch 5C ... Imposition portion 5D ... Imposition portion 6A ... Imposition punch 6B ... Imposition punch 6C ... Imposition portion 6D ... Imposition portion R1, R2 ... R portion R1 ', R2' ... R portion of edge 2C

Claims (4)

軸方向の貫通孔を有する概略筒状の本体部を備えた筒状部材の製造方法であって、
異なる曲率半径の２箇所のＲ部分（Ｒ１、Ｒ２）を有する面付けパンチを上記貫通孔の一端となる縁部に押圧させて、該縁部に上記面付けパンチの形状に倣った２箇所のＲ部分（Ｒ１’、Ｒ２’）を形成して、該Ｒ部分の一方と交差するように端面を平面状に切削加工することにより、上記各縁部に面付けを施したことを特徴とする筒状部材の製造方法。 A method of manufacturing a cylindrical member provided with a substantially cylindrical main body having an axial through hole,
An imposition punch having two R portions (R1, R2) having different radii of curvature is pressed against an edge serving as one end of the through-hole, and two edges imitating the shape of the imposition punch on the edge. An R portion (R1 ′, R2 ′) is formed, and an end face is cut into a flat shape so as to intersect with one of the R portions, so that each edge is faced. A manufacturing method of a cylindrical member. 軸方向の貫通孔を有する概略筒状の本体部と、この本体部の外周部に設けたフランジ部と、このフランジ部に形成した軸方向の切欠き部とを備えた筒状部材の製造方法であって、
上記本体部、フランジ部および切欠き部を形成した後に、上記貫通孔の軸方向の両端となる縁部あるいは上記切欠き部における軸方向の両端となる縁部に、順次あるいは同時に軸方向の両端側から各一対の面付けパンチの面付け部を押圧させて、上記貫通孔の両端となる縁部および上記切欠き部における軸方向の両端となる縁部に面付けを施したことを特徴とする筒状部材の製造方法。 A method of manufacturing a cylindrical member comprising a substantially cylindrical main body having an axial through-hole, a flange provided on the outer periphery of the main body, and an axial notch formed in the flange Because
After forming the main body portion, the flange portion, and the notch portion, the axial end portions of the through hole or the axial end portions of the notch portion are sequentially or simultaneously placed on the axial end portions of the through hole. It is characterized by pressing the imposition portions of each pair of imposition punches from the side, and imposing the edge portions serving as both ends of the through hole and the edge portions serving as both ends in the axial direction of the notch portions. A method for manufacturing a cylindrical member. 上記面付けパンチの面付け部は、曲率半径が異なる２箇所のＲ部分（Ｒ１、Ｒ２）を備え、この面付け部を上記縁部に押圧させて、該縁部に２箇所のＲ部分（Ｒ１’、Ｒ２’）を形成して、該Ｒ部分の一方と交差するように端面を平面状に切削加工して、各縁部に面付けを施すことを特徴とする請求項２に記載の筒状部材の製造方法。   The imposition portion of the imposition punch includes two R portions (R1, R2) having different radii of curvature, and the imposition portion is pressed against the edge portion so that two R portions ( 3. R 1 ′, R 2 ′) is formed, the end face is cut into a flat shape so as to intersect with one of the R portions, and each edge is impositioned. A manufacturing method of a cylindrical member. 上記切削加工時に交差する側のＲ部分（Ｒ１’）は他方のＲ部分（Ｒ２’）よりも曲率半径が大きく設定されていることを特徴とする請求項１または請求項３に記載の筒状部材の製造方法。   4. The cylindrical shape according to claim 1, wherein a radius of curvature of the R portion (R 1 ′) intersecting at the time of the cutting is set larger than that of the other R portion (R 2 ′). Manufacturing method of member.
JP2006115269A 2006-04-19 2006-04-19 Method of manufacturing cylindrical member Pending JP2007283453A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008032110A (en) * 2006-07-28 2008-02-14 Nachi Fujikoshi Corp Proportional solenoid valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11156449A (en) * 1997-11-27 1999-06-15 Asahi Seiki Mfg Co Ltd Method for press-working cylinder end part
JP2000077229A (en) * 1998-09-02 2000-03-14 Aisin Aw Co Ltd Solenoid coil assembly and manufacture of the same
JP2004322144A (en) * 2003-04-24 2004-11-18 Seiko Epson Corp Press machine, face pressing die, pressing method, metal plate and recording device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11156449A (en) * 1997-11-27 1999-06-15 Asahi Seiki Mfg Co Ltd Method for press-working cylinder end part
JP2000077229A (en) * 1998-09-02 2000-03-14 Aisin Aw Co Ltd Solenoid coil assembly and manufacture of the same
JP2004322144A (en) * 2003-04-24 2004-11-18 Seiko Epson Corp Press machine, face pressing die, pressing method, metal plate and recording device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008032110A (en) * 2006-07-28 2008-02-14 Nachi Fujikoshi Corp Proportional solenoid valve

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