JP2007216264A - Method of manufacturing plate-like member with groove - Google Patents

Method of manufacturing plate-like member with groove Download PDF

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Publication number
JP2007216264A
JP2007216264A JP2006039879A JP2006039879A JP2007216264A JP 2007216264 A JP2007216264 A JP 2007216264A JP 2006039879 A JP2006039879 A JP 2006039879A JP 2006039879 A JP2006039879 A JP 2006039879A JP 2007216264 A JP2007216264 A JP 2007216264A
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Japan
Prior art keywords
hole
crushing
plate
groove
shape
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JP2006039879A
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Japanese (ja)
Inventor
Akio Ueda
章夫 上田
Kaname Soda
要 左右田
Takeshi Doi
健史 土井
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KINSEI KOGYO KK
Denso Corp
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KINSEI KOGYO KK
Denso Corp
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Priority to JP2006039879A priority Critical patent/JP2007216264A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a plate-like member with a groove capable of reducing machining cost by forming the groove part where is suitable to machining only by press working. <P>SOLUTION: The method of manufacturing the plate-like member with the groove is provided with: the initial punching stage where the initial hole 33 is formed on the plate-like member 30 by punching; squeezing stage where a squeezed part 34 is formed by squeezing the member so as to include the initial hole 33 with a punch 110 which is formed so that the metal removing amount in the tip part is successively increased toward the center from the side of one surface of the plate-like member 30; prepared hole punching stage where the hole 33a the inside diameter of which is contracted in the squeezing stage is re-punched into a prepared hole 35 having a prescribed inside diameter by punching; erecting stage where an erected part 36 is formed by erecting the border of the prepared hole 35 to the side of one surface while ironing the border so as to become a prescribed thickness; and shape adjusting stage where the shape is adjusted by pressing the shape of the erected part 36 and the groove part 32 formed between this erected part 36 and the squeezed part 34 by pressing. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、相手側への取付け部を成す溝付き板状部材の製造方法に関するものであり、例えばオイルクーラ（熱交換器）等の取付け座面に適用して好適である。   The present invention relates to a method for manufacturing a grooved plate-like member that forms a mounting portion on a mating side, and is suitable for application to a mounting seat surface such as an oil cooler (heat exchanger).

従来、エンジン用オイルクーラのような熱交換器では、本体部の一端側に板状の座面（底板）が設けられている。座面には、熱交換用の熱媒体（冷却水やオイル）が本体部に対して流入・流出する穴が穿設されると共に、座面の外側で穴の外周側となる部位には環状のＯリング溝が形成されている。Ｏリング溝にはシール部材としてのＯリングが装着されて、座面は相手側となるエンジンブロックやブラケットに当接するように固定され、Ｏリングによって熱媒体が外部に漏れないようにしている（例えば特許文献１）。
特開平６−１７３６２６号公報 2. Description of the Related Art Conventionally, in a heat exchanger such as an engine oil cooler, a plate-shaped seat surface (bottom plate) is provided on one end side of a main body. The seat surface is provided with holes through which heat exchange heat medium (cooling water and oil) flows into and out of the main body, and an annular portion is formed on the outer periphery of the seat surface. O-ring grooves are formed. An O-ring as a seal member is mounted in the O-ring groove, and the seating surface is fixed so as to abut against an engine block or a bracket as a counterpart, so that the heat medium does not leak to the outside by the O-ring ( For example, Patent Document 1).
JP-A-6-173626

上記のようなＯリング溝、およびＯリングを用いたシール構造においては、熱媒体に対するシール性を確実に確保するために、特にＯリング溝の深さ寸法、幅寸法、Ｏリング当接面の面粗度等が高い精度で要求される。上記特許文献１中では座面における穴およびＯリング溝の具体的な成形方法についての記載は無いが、通常、座面に対してプレス加工によって穴を打抜きした後に、切削加工によってＯリング溝を形成するようにしており、この切削加工に多くの時間を要し、加工費がかさむ要因となっていた。   In the sealing structure using the O-ring groove and the O-ring as described above, in order to ensure the sealing performance against the heat medium, in particular, the depth dimension, the width dimension of the O-ring groove, Surface roughness is required with high accuracy. In Patent Document 1, there is no description of a specific method for forming the hole and the O-ring groove on the seating surface. Usually, after punching the hole by pressing on the seating surface, the O-ring groove is formed by cutting. Therefore, it took a lot of time for this cutting process, which was a factor of increasing the processing cost.

本発明の目的は、上記問題に鑑み、プレス加工のみで切削加工に相当する溝部を形成して、加工費の低減を可能とする溝付き板状部材の製造方法を提供することにある。   In view of the above problems, an object of the present invention is to provide a method for manufacturing a grooved plate member that can reduce a processing cost by forming a groove corresponding to a cutting process only by pressing.

本発明は上記目的を達成するために、以下の技術的手段を採用する。   In order to achieve the above object, the present invention employs the following technical means.

請求項１に記載の発明では、溝付き板状部材の製造方法において、打抜きによって板状部材（３０）に初期穴（３３）を成形する初期穴抜き工程と、板状部材（３０）の一方の面側から、先端部の除肉量が中心に向けて順次大きくなるように形成されたパンチ（１１０）で、初期穴（３３）を内包するように潰して潰し部（３４）を成形する潰し工程と、潰し工程によって内径が縮小した穴（３３ａ）を、打抜きによって所定内径の下穴（３５）にあけ直す下穴抜き工程と、下穴（３５）の周りを所定厚さになるようにしごきながら一方の面側に立起して立起し部（３６）を成形する立起し工程と、立起し部（３６）の形状と、この立起し部（３６）および潰し部（３４）の間に形成される溝部（３２）の形状とをプレスすることで整える形状調整工程とを有することを特徴としている。   In the invention according to claim 1, in the manufacturing method of the grooved plate member, one of the initial hole punching step of forming the initial hole (33) in the plate member (30) by punching, and one of the plate member (30) From the surface side, the punch (110) formed so that the thinning amount of the tip portion gradually increases toward the center is crushed so as to contain the initial hole (33), and the crushed portion (34) is formed. A crushing step, a pilot hole punching step in which the hole (33a) whose inner diameter is reduced by the crushing step is re-pierced into a pilot hole (35) having a predetermined inner diameter by punching, and the periphery of the pilot hole (35) has a predetermined thickness. Standing step of standing up on one side while molding and forming the standing part (36), the shape of the standing part (36), the standing part (36) and the crushing part (34) The shape which arranges by pressing the shape of the groove part (32) formed between It is characterized by having an adjusting step.

これにより、潰し工程において、パンチ（１１０）とこのパンチ（１１０）に対応する下型（１３０）との間には、初期穴（３３）の中心に向けて順次大きくなる空間が形成されるので、潰しを行う際の板状部材（３０）の材料が中心側に流れ易くなる。そして、下穴抜き工程の後の立起し工程において、実肉を充分に有する立起し部（３６）を形成でき、形状調整工程によって、材料が不足することなく立起し部（３６）の内側に貫通穴（３１）、立起し部（３６）の外側に環状の溝部（３２）を精度良く形成できる。よって、従来技術のような切削加工を不要として、溝付きの板状部材（３０）を安価に製造することができる。   Thus, in the crushing process, a space that gradually increases toward the center of the initial hole (33) is formed between the punch (110) and the lower mold (130) corresponding to the punch (110). The material of the plate-like member (30) at the time of crushing easily flows to the center side. In the standing up step after the pilot hole punching step, the standing up portion (36) having sufficient actual meat can be formed, and the upright portion (36) can be formed without a shortage of material by the shape adjusting step. A through hole (31) can be formed on the inside, and an annular groove (32) can be formed on the outside of the raised part (36) with high accuracy. Therefore, the grooved plate member (30) can be manufactured at low cost without the need for cutting as in the prior art.

請求項２に記載の発明のように、パンチ（１１０）の除肉量が中心に向けてテーパ状に大きくなるようにした時に、テーパの角度は５〜１５度とするのが良い。   As in the second aspect of the invention, when the thickness of the punch (110) is increased in a tapered shape toward the center, the taper angle is preferably 5 to 15 degrees.

即ち、テーパの角度を５度以上とすることで、潰し工程での中心側への材料流れを効果的に得ることができる。また、テーパの角度を大きくしていき１５度を超えると、潰しを行った後の中心側の肉厚が厚く成りすぎて、次の立起し工程において、しごきの抵抗が大きくなり、加工が困難となる。よって、テーパの角度は５〜１５度が好適となる。   That is, by setting the taper angle to 5 degrees or more, a material flow toward the center side in the crushing process can be effectively obtained. Also, if the taper angle is increased and exceeds 15 degrees, the thickness of the center side after crushing becomes too thick, and the resistance of ironing becomes large in the next rising process, and the processing is It becomes difficult. Therefore, the taper angle is preferably 5 to 15 degrees.

尚、上記各手段の括弧内の符号は、後述する実施形態記載の具体的手段との対応関係を示すものである。   In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment description mentioned later.

（第１実施形態）
第１実施形態は、本発明の溝付き板状部材をエンジンオイル冷却用の水冷式丸型オイルクーラ１０の座面プレート３０に適用したものである。オイルクーラ１０は、図１に示すように、本体部２０の一端側（図１中の下側）に、座面プレート３０が接合されて形成されたものである。尚、以下の各構成部材は、ステンレス材、あるいはアルミニウム材等から成り、ろう付けによって互いに接合されている。 (First embodiment)
In the first embodiment, the grooved plate member of the present invention is applied to a seating surface plate 30 of a water-cooled round oil cooler 10 for cooling engine oil. As shown in FIG. 1, the oil cooler 10 is formed by joining a seating surface plate 30 to one end side (lower side in FIG. 1) of the main body 20. The following constituent members are made of stainless steel, aluminum, or the like, and are joined to each other by brazing.

本体部２０は、複数積層される扁平丸型のオイルユニット（図示省略）が円筒状のケース内部に収容された熱交換部であり、この本体部２０にはケース内部と連通する冷却水用の入口パイプ２１および出口パイプ２２が設けられている。   The main body 20 is a heat exchanging unit in which a plurality of stacked flat round oil units (not shown) are accommodated in a cylindrical case, and the main body 20 is used for cooling water communicating with the inside of the case. An inlet pipe 21 and an outlet pipe 22 are provided.

座面プレート３０は、所定板厚で外形が丸形状、四角形状、菱形形状等を成して、取付け部としての適度な剛性を有する板状の部材であって、この座面プレート３０にはエンジンオイルが流通するための貫通穴３１が２つ設けられている。そして、座面プレート３０の外側（反本体部側）で、それぞれの貫通穴３１の外周側となる部位には、環状の溝部３２が形成されている。溝部３２の断面形状は四角状に形成されている。   The seat surface plate 30 is a plate-like member having a predetermined plate thickness and having an outer shape of a round shape, a square shape, a rhombus shape, etc. and having an appropriate rigidity as an attachment portion. Two through holes 31 are provided for the engine oil to circulate. An annular groove 32 is formed on the outer surface of the seat plate 30 (on the side opposite to the main body) on the outer peripheral side of each through hole 31. The cross-sectional shape of the groove part 32 is formed in a square shape.

溝部３２にはシール部材としてのＯリング４０が装着されて、座面プレート３０のＯリング４０側がエンジンブロック１に当接されて、複数のボルト５０によって締結されることで、オイルクーラ１０はエンジンブロック１に固定されている。   An O-ring 40 as a seal member is attached to the groove portion 32, and the O-ring 40 side of the seating surface plate 30 is brought into contact with the engine block 1 and fastened by a plurality of bolts 50. Fixed to block 1.

エンジンオイルは、エンジン本体側、エンジンブロック１を通して座面プレート３０の一方の貫通穴３１からケース内の複数のオイルユニットに流入して、他方の貫通穴３１からエンジンブロック１（エンジン本体側）に戻る。また、冷却水は、入口パイプ２１からケース内に流入して、出口パイプ２２から流出する。この時オイルユニット内を流通するエンジンオイルは冷却水によって冷却されるようになっている。また、貫通穴３１近傍のエンジンブロック１と座面プレート３０との間は、Ｏリング４０によってシールされ、エンジンオイルが外部に漏れないようになっている。   Engine oil flows into the plurality of oil units in the case from one through hole 31 of the seating surface plate 30 through the engine block 1 on the engine body side, and enters the engine block 1 (engine body side) from the other through hole 31. Return. Further, the cooling water flows into the case from the inlet pipe 21 and flows out from the outlet pipe 22. At this time, the engine oil flowing through the oil unit is cooled by cooling water. Further, the space between the engine block 1 and the seating surface plate 30 in the vicinity of the through hole 31 is sealed by an O-ring 40 so that engine oil does not leak to the outside.

図２は、座面プレート３０のみを図１に対して天地方向を逆にして示したものであり、以下、貫通穴３１および溝部３２（図２中のＡ部）の成形方法（製造方法）について図３〜図７を用いて説明する。尚、図３（ａ〜ｅ）は以下説明する各工程での座面プレート３０の成形状態を示す断面図であり、図４〜図６は、各工程に使用される金型１００〜３００を示す正面図であり、図７は金型１００における潰しパンチ１１０の最適先端形状を設定するための根拠を説明した図である。   FIG. 2 shows only the seating surface plate 30 with the top-and-bottom direction reversed with respect to FIG. 1. Hereinafter, a molding method (manufacturing method) of the through hole 31 and the groove portion 32 (A portion in FIG. 2). Will be described with reference to FIGS. 3A to 3E are cross-sectional views showing the molding state of the seating surface plate 30 in each process described below. FIGS. 4 to 6 show the molds 100 to 300 used in each process. FIG. 7 is a diagram illustrating the basis for setting the optimum tip shape of the crushing punch 110 in the mold 100.

１．下穴抜き工程（本発明における初期穴抜き工程）
図３（ａ）に示すように、この工程では外形が所定形状に成形された座面プレート３０に、下穴（本発明における初期穴に対応）３３を設けるものとしている。ここでは座面プレート３０を図示しない下穴抜き用金型の上型と下型との間に挟みこんで、下穴抜きパンチを下降させることで、第１所定内径となる丸形状の下穴３３を打抜く。 1. Lower hole punching process (initial hole punching process in the present invention)
As shown in FIG. 3A, in this step, a pilot hole (corresponding to the initial hole in the present invention) 33 is provided in the seating surface plate 30 whose outer shape is formed in a predetermined shape. Here, the seat surface plate 30 is sandwiched between an upper mold and a lower mold (not shown), and the lower punch is lowered to lower the round prepared hole having the first predetermined inner diameter. Punch 33.

２．潰し工程
図３（ｂ）に示すように、この工程では座面プレート３０の一方の面側（図３（ｂ）では上側）から上記下穴３３を内包するように、第２所定内径で所定深さとなるように潰し部３４を成形するものとしている。潰し部３４は円形の窪みとなるものであり、その中心は下穴３３の中心と一致させている。第２所定内径は、完成状態の溝部３２の外側ラインの内径と略等しく、また、所定深さは、完成状態の溝部３２の深さに略等しくなるように設定している。 2. Crushing step As shown in FIG. 3B, in this step, a predetermined second inner diameter is used so as to enclose the lower hole 33 from one side of the seating plate 30 (upper side in FIG. 3B). The crushing portion 34 is formed so as to have a depth. The crushing portion 34 is a circular depression, and the center thereof coincides with the center of the pilot hole 33. The second predetermined inner diameter is set to be approximately equal to the inner diameter of the outer line of the groove portion 32 in the completed state, and the predetermined depth is set to be approximately equal to the depth of the groove portion 32 in the completed state.

潰し部３４の成形は、図４に示す潰し用金型１００を用いて行う。潰し用金型１００には上記潰し部３４を成形するための潰しパンチ１１０が設けられている。ここで、この潰しパンチ１１０の先端部（下側）は、中心に向けて除肉量が順次大きくなるようにしている。具体的には、テーパ状に除肉することで上側に向けて円錐状の凹となるようにしている。テーパ状の除肉部を以下テーパ部１１１と呼ぶ。テーパ部１１１のテーパ角度θ（図７）は、５〜１５度を選択するのが好ましい（この理由については、後述する）。   The crushing part 34 is formed using a crushing mold 100 shown in FIG. The crushing mold 100 is provided with a crushing punch 110 for forming the crushing portion 34. Here, the tip end portion (lower side) of the crushing punch 110 is designed such that the amount of thinning gradually increases toward the center. Specifically, the conical recess is formed upward by removing the taper shape. The tapered thinned portion is hereinafter referred to as a tapered portion 111. It is preferable to select 5 to 15 degrees as the taper angle θ (FIG. 7) of the taper portion 111 (the reason will be described later).

下穴抜き工程で下穴３３が成形された座面プレート３０を、上記潰し用金型１００の押え部１２０と下型１３０との間に挟みこんで、潰しパンチ１１０を下降させる。潰しパンチ１１０（テーパ部１１１）と下型１３０との間には、中心側に向けて隙間が大きくなる空間が形成されることになり、座面プレート３０の材料は潰しパンチ１１０の下降と共に、隙間の大きくなる中心側に向けて積極的に流動していき、下穴３３は縮径されて縮径穴（本発明における内径が縮小した穴に対応）３３ａとなる。また、潰し部３４の底部中心には、潰しパンチ１１０のテーパ部１１１による傾きθの円錐状の凸が残ることになる。   The seat surface plate 30 in which the pilot hole 33 is formed in the pilot hole punching process is sandwiched between the pressing part 120 of the crushing mold 100 and the lower mold 130, and the crushing punch 110 is lowered. Between the crushing punch 110 (tapered portion 111) and the lower mold 130, a space in which a gap increases toward the center side is formed, and the material of the seating surface plate 30 is lowered with the crushing punch 110 being lowered. The lower hole 33 is reduced in diameter to become a reduced diameter hole (corresponding to a hole having a reduced inner diameter in the present invention) 33a. Further, at the center of the bottom portion of the crushing portion 34, a conical projection having an inclination θ by the taper portion 111 of the crushing punch 110 remains.

３．バーリング下穴抜き工程（本発明における下穴抜き工程）
図３（ｃ）に示すように、この工程では縮径穴３３ａに対して、第３所定内径となるバーリング下穴３５をあけ直すものとしている。ここでは上記潰し部３４が成形された座面プレート３０を図示しないバーリング下穴抜き用金型の上型と下型との間に挟みこんで、バーリング下穴抜きパンチを下降させることで、バーリング下穴３５を打抜く。 3. Burring pilot hole removal process (preparation process in the present invention)
As shown in FIG. 3C, in this step, the burring prepared hole 35 having a third predetermined inner diameter is re-opened with respect to the reduced diameter hole 33a. Here, the bearing plate 30 formed with the crushing portion 34 is sandwiched between an upper die and a lower die of a burring lower hole punching mold (not shown), and the burring lower hole punching is lowered to lower the burring The pilot hole 35 is punched out.

４．しごきバーリング工程（本発明における立起し工程）
図３（ｄ）に示すように、この工程ではバーリング下穴３５の周りの部位が座面プレート３０の一方の面側（図３（ｄ）では上側）に向くように、立起し部３６を成形するものとしている。立起し部３６を成形する際にはバーリング下穴３５の周りの部位をしごきながら所定厚さとなるように立起す。立起し部３６の内径は貫通穴３１の内径に略等しく、所定厚さは完成状態の貫通穴３１と完成状態の溝部３２の内側ラインの内径との差の１／２に略等しくなるように設定している。 4). Ironing burring process (rising process in the present invention)
As shown in FIG. 3D, in this step, the upright portion 36 is positioned so that the portion around the burring pilot hole 35 faces one side of the seating surface plate 30 (upper side in FIG. 3D). Is supposed to be molded. When forming the standing part 36, the part around the burring pilot hole 35 is erected so as to have a predetermined thickness. The inner diameter of the raised portion 36 is substantially equal to the inner diameter of the through hole 31, and the predetermined thickness is substantially equal to 1/2 of the difference between the inner diameter of the completed through hole 31 and the inner line of the completed groove portion 32. Is set.

立起し部３６の成形は、図５に示すしごきバーリング用金型２００を用いて行う。しごきバーリング用金型２００には上記立起し部３６を成形するためのバーリングパンチ２１０およびバーリングガイド２２０が設けられている。   The standing part 36 is formed using a die 200 for ironing burring shown in FIG. The ironing burring mold 200 is provided with a burring punch 210 and a burring guide 220 for forming the raised portion 36.

バーリングパンチ２１０は、座面プレート３０の反潰し部側から潰し部３４側へ、ここでは下側から上側に摺動して立起しを行う円柱状のパンチであり、立起しを容易とするために先端部は先細となっている。   The burring punch 210 is a cylindrical punch that slides up from the crushed part side of the seating surface plate 30 to the crushed part 34 side, here from the lower side to the upper side. To do so, the tip is tapered.

バーリングガイド２２０は、座面プレート３０を潰し部３４側から下型２３０に向けて押えると共に、立起し部３６成形時のガイドを果たす上型となっている。バーリングガイド２２０の中心部は、バーリングパンチ２１０が挿通されると共に、両者２１０、２２０間に上記所定厚さ分の隙間が形成されるように円形に除肉されている。円形除肉部の潰し部３４側の周り（図５中の下側）には、潰し部３４側に突出して、潰し部３４にはまり込む凸部２２１が形成されている。   The burring guide 220 is an upper die that presses the seating surface plate 30 toward the lower die 230 from the crushing portion 34 side and serves as a guide when the rising portion 36 is formed. The central portion of the burring guide 220 is thinned in a circular shape so that the burring punch 210 is inserted and a gap corresponding to the predetermined thickness is formed between the two burring punches 210 and 220. A convex portion 221 that protrudes toward the crushing portion 34 and fits into the crushing portion 34 is formed around the crushing portion 34 side of the circular thinning portion (lower side in FIG. 5).

バーリング下穴抜き工程でバーリング下穴３５が成形された座面プレート３０を、潰し部３４がバーリングガイド２２０側となるように上記バーリング下穴抜き用金型２００のバーリングガイド２２０と下型２３０との間に挟みこんで、バーリングパンチ２１０を上昇させる。バーリング下穴３５の周りで円錐状に凸となる厚肉の部位は、バーリングパンチ２１０とバーリングガイド２２０との間でしごかれて、所定厚さの立起し部３６として成形される。尚、立起し部３６の起点部は比較的緩やかな曲げ部３７となっており、また、材料のしごきによって立起し部３６の先端部は座面プレート３０の一方の面よりも突出する。   The burring guide 220 and the lower mold 230 of the burring lower hole punching die 200 are arranged such that the bearing surface plate 30 in which the burring lower hole 35 is formed in the burring lower hole punching process is located on the burring guide 220 side. The burring punch 210 is raised by sandwiching between the two. A thick portion that protrudes in a conical shape around the burring pilot hole 35 is squeezed between the burring punch 210 and the burring guide 220 to be formed as a raised portion 36 having a predetermined thickness. The starting portion of the rising portion 36 is a relatively gentle bent portion 37, and the leading end portion of the rising portion 36 protrudes from one surface of the seating surface plate 30 by ironing of the material. .

５．据込み工程（本発明における形状調整工程）
図３（ｅ）に示すように、この工程では立起し部３６と、立起し部３６および潰し部３４の間に形成される溝部（３２）との形状を整えて、最終的な貫通穴３１と溝部３２とを得るものとしている。 5). Upsetting process (shape adjustment process in the present invention)
As shown in FIG. 3 (e), in this step, the shape of the raised portion 36 and the groove portion (32) formed between the raised portion 36 and the crushed portion 34 is adjusted, and finally penetrated. The holes 31 and the grooves 32 are obtained.

貫通穴３１と溝部３２の成形は、図６に示す据込み用金型３００を用いて行う。据込み用金型３００には貫通穴３１、溝部３２を成形するための据込みパンチ３１０および押え部３２０が設けられている。   The through holes 31 and the grooves 32 are formed using an upsetting mold 300 shown in FIG. The upsetting mold 300 is provided with an upsetting punch 310 and a holding unit 320 for forming the through hole 31 and the groove 32.

据込みパンチ３１０は、座面プレート３０の潰し部３４側から反潰し部側へ、ここでは上側から下側に摺動して貫通穴３１の成形および立起し部３６の形状調整を行う円柱状のパンチであり、先端側は段付き形状となっている。据込みパンチ３１０の先端側における小径部の直径は、貫通穴３１の内径に相当し、また、大径部の直径は完成状態の溝部３２の内側ラインの内径に相当するように設定されている。   The upsetting punch 310 slides from the crushing portion 34 side of the seating surface plate 30 to the anti-crushing portion side, here from the upper side to the lower side, to form the through hole 31 and adjust the shape of the raised portion 36. It is a columnar punch, and the tip side has a stepped shape. The diameter of the small diameter portion on the tip side of the upsetting punch 310 corresponds to the inner diameter of the through hole 31, and the diameter of the large diameter portion is set to correspond to the inner diameter of the inner line of the groove portion 32 in the completed state. .

押え部３２０は、座面プレート３０を潰し部３４側から下型３３０に向けて押えると共に、立起し部３６と潰し部３４との間の部位をプレスすることで溝部３２として成形するための上型となっている。押え部３２０の中心部は、据込みパンチ３１０が挿通されると共に、据込みパンチ３１０の小径部および押え部３２０間に上記所定厚さ分の隙間が形成されるように円形に除肉されている。円形除肉部の潰し部３４側の周り（図６中の下側）には、潰し部３４側に突出して、潰し部３４にはまり込む凸部３２１が形成されている。凸部３２１の断面形状は、溝部３２の断面形状に相当するように設定されている。   The holding part 320 is used to hold the seat surface plate 30 from the crushing part 34 side toward the lower mold 330 and to form the groove part 32 by pressing a portion between the raised part 36 and the crushing part 34. It is an upper mold. The center portion of the presser portion 320 is thinned into a circular shape so that the upset punch 310 is inserted and the gap of the predetermined thickness is formed between the small diameter portion of the upset punch 310 and the presser portion 320. Yes. Around the crushing portion 34 side of the circular wall removal portion (lower side in FIG. 6), a convex portion 321 that protrudes toward the crushing portion 34 side and fits into the crushing portion 34 is formed. The cross-sectional shape of the convex portion 321 is set to correspond to the cross-sectional shape of the groove portion 32.

しごきバーリング工程で立起し部３６が成形された座面プレート３０を、立起し部３６が押え部３２０側となるように上記据込み用金型３００の押え部３２０と下型３３０との間に挟みこんで、据込みパンチ３１０を下降させる。立起し部３６と潰し部３４との間には押え部３２０の凸部３２１が入り込んで、形状調整が成されて、この部位が溝部３２となる。また、据込みパンチ３１０の小径部によって立起し部３６の内径が調整されると共に、据込みパンチ３１０の小径部と大径部との段差によって立起し部３４の立ち寸法が座面プレート３０の板厚と同一となるように調整されて、貫通穴３１となる。尚、この立ち寸法の調整時には、主に、材料は立起し部３６の曲げ部３７に流れて、この部位はピン角となる。   The seat plate 30 having the raised portion 36 formed in the squeezing burring process is formed between the holding portion 320 and the lower die 330 of the upsetting mold 300 such that the rising portion 36 is on the holding portion 320 side. The upsetting punch 310 is lowered while being sandwiched between them. The convex portion 321 of the presser portion 320 enters between the raised portion 36 and the crushed portion 34, and the shape is adjusted, and this portion becomes the groove portion 32. Further, the inner diameter of the upright portion 36 is adjusted by the small diameter portion of the upsetting punch 310, and the standing dimension of the upright portion 34 is determined by the step between the small diameter portion and the large diameter portion of the upsetting punch 310. The through hole 31 is adjusted to be equal to the plate thickness of 30. At the time of adjusting the standing dimension, the material mainly flows into the bending portion 37 of the rising portion 36, and this portion becomes a pin angle.

以上の工程により貫通穴３１および溝部３２を有する座面プレート３０が完成する。本実施形態では、潰し工程において、潰しパンチ１１０と下型１３０との間にはテーパ部１１１によって、下穴３３の中心に向けて順次大きくなる空間が形成されるので、潰しを行う際の座面プレート３０の材料が中心側に流れ易くなる。そして、バーリング下穴抜き工程の後のしごきバーリング工程において、実肉を充分に有する立起し部３６を形成でき、据込み工程によって、材料が不足することなく立起し部３６の内側に貫通穴３１、立起し部３６の外側に環状の溝部３２を精度良く形成できる。よって、従来技術のような切削加工を不要として、プレス加工のみにより貫通穴３１の周りに溝部３２を有する座面プレート３０を安価に製造することができる。   The seat surface plate 30 having the through hole 31 and the groove portion 32 is completed through the above steps. In the present embodiment, in the crushing process, a space that is sequentially increased toward the center of the lower hole 33 is formed between the crushing punch 110 and the lower mold 130 by the taper portion 111. The material of the face plate 30 easily flows to the center side. Then, in the ironing burring process after the burring lower hole punching process, it is possible to form the raised part 36 having sufficient actual meat, and through the upright part 36 without running out of material by the upsetting process. The annular groove 32 can be formed with high accuracy outside the hole 31 and the raised portion 36. Therefore, it is possible to manufacture the seating surface plate 30 having the groove portions 32 around the through holes 31 at low cost only by pressing, without the need for cutting as in the prior art.

潰し工程における潰しパンチ１１０のテーパ部１１１のテーパ角度θについては、５〜１５度が好適であるとした。これは、図７に示すように、テーパ角度θを５度以上とすることで、潰し工程での中心側への材料流れを効果的に得ることができるためである。また、テーパ角度θを大きくしていき１５度を超えると、潰しを行った後の中心側の肉厚が厚く成りすぎて、次のしごきバーリング工程において、しごきの抵抗が大きくなり、加工が困難となるためである。よって、テーパ角度θの上限側の値としては、１５度以下とすることで、無理のない加工が可能となる。   The taper angle θ of the taper portion 111 of the crushing punch 110 in the crushing process is preferably 5 to 15 degrees. This is because, as shown in FIG. 7, by setting the taper angle θ to 5 degrees or more, a material flow toward the center side in the crushing process can be effectively obtained. In addition, if the taper angle θ is increased and exceeds 15 degrees, the wall thickness on the center side after crushing becomes too thick, and the resistance of the ironing becomes large in the next ironing burring process, making it difficult to process. It is because it becomes. Therefore, when the value on the upper limit side of the taper angle θ is set to 15 degrees or less, it is possible to process without difficulty.

（その他の実施携帯）
本実施形態では溝付き板状部材をオイルクーラ１０の座面プレート３０に適用したものとして説明したが、これに限らず、他の熱交換器あるいは他の機器等の取付け座面に適用しても良い。 (Other mobile phones)
In the present embodiment, the grooved plate-like member has been described as being applied to the seating surface plate 30 of the oil cooler 10. However, the present invention is not limited thereto, and is applied to a mounting seating surface of other heat exchangers or other devices. Also good.

オイルクーラのエンジンブロックに装着された状態を示す断面図である。It is sectional drawing which shows the state with which the engine block of the oil cooler was mounted | worn. 座面プレートのみを図１に対して天地方向を逆にして示した断面図である。FIG. 2 is a cross-sectional view showing only a seating plate with the top-and-bottom direction reversed with respect to FIG. 1. 各工程での座面プレートの成形状態を示す断面図である。It is sectional drawing which shows the molding state of the seat surface plate in each process. 潰し用金型を示す正面図である。It is a front view which shows the metal mold | die for crushing. しごきバーリング用金型を示す正面図である。It is a front view which shows the die for ironing burring. 据込み用金型を示す正面図である。It is a front view which shows the metal mold | die for upsetting. 潰し用金型における潰しパンチの最適先端形状を設定するための根拠を説明した図である。It is a figure explaining the basis for setting the optimal tip shape of a crushing punch in a crushing metal mold.

符号の説明Explanation of symbols

３０ 座面プレート（板状部材）
３２ 溝部
３３ 下穴（初期穴）
３３ａ 縮径穴（内径が縮小した穴）
３５ バーリング下穴（下穴）
３６ 立起し部
１１０ 潰しパンチ（パンチ） 30 Seat plate (plate-shaped member)
32 Groove part 33 Pilot hole (initial hole)
33a Reduced hole (hole with reduced inner diameter)
35 Burring pilot hole (pilot hole)
36 Standing part 110 Crushing punch (punch)

Claims (2)

打抜きによって板状部材（３０）に初期穴（３３）を成形する初期穴抜き工程と、
前記板状部材（３０）の一方の面側から、先端部の除肉量が中心に向けて順次大きくなるように形成されたパンチ（１１０）で、前記初期穴（３３）を内包するように潰して潰し部（３４）を成形する潰し工程と、
前記潰し工程によって内径が縮小した穴（３３ａ）を、打抜きによって所定内径の下穴（３５）にあけ直す下穴抜き工程と、
前記下穴（３５）の周りを所定厚さになるようにしごきながら前記一方の面側に立起して立起し部（３６）を成形する立起し工程と、
前記立起し部（３６）の形状と、この立起し部（３６）および前記潰し部（３４）の間に形成される溝部（３２）の形状とをプレスすることで整える形状調整工程とを有することを特徴とする溝付き板状部材の製造方法。 An initial hole punching step of forming an initial hole (33) in the plate-like member (30) by punching;
A punch (110) formed so that the thinning amount of the tip portion gradually increases toward the center from one surface side of the plate-like member (30) so as to enclose the initial hole (33). Crushing step of crushing and forming the crushing portion (34);
A pilot hole punching step in which the hole (33a) whose inner diameter is reduced by the crushing step is re-pierced into a pilot hole (35) having a predetermined inner diameter by punching;
An erecting step of erecting the raised portion (36) by standing on the one surface side while squeezing the periphery of the pilot hole (35) to a predetermined thickness;
A shape adjusting step for adjusting the shape of the raised portion (36) and the shape of the groove portion (32) formed between the raised portion (36) and the crushed portion (34); The manufacturing method of the plate member with a groove | channel characterized by having. 前記パンチ（１１０）の前記除肉量が中心に向けてテーパ状に大きくなるようにして、
前記テーパの角度を５〜１５度としたことを特徴とする請求項１に記載の溝付き板状部材の製造方法。 The thickness of the punch (110) is increased in a tapered shape toward the center,
The method for manufacturing a grooved plate member according to claim 1, wherein the taper angle is set to 5 to 15 degrees.
JP2006039879A 2006-02-16 2006-02-16 Method of manufacturing plate-like member with groove Pending JP2007216264A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012215224A (en) * 2011-03-31 2012-11-08 Hitachi Automotive Systems Ltd Cylinder member and manufacturing method therefor
CN107448442A (en) * 2016-05-31 2017-12-08 祥伟自动科技股份有限公司 Connecting seat and connecting seat forming method
JP2019148245A (en) * 2018-02-28 2019-09-05 トヨタ自動車株式会社 Oil cooler

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JPH06179029A (en) * 1992-12-11 1994-06-28 F C C:Kk Manufacture of piston for clutch
JPH07100547A (en) * 1993-10-01 1995-04-18 Nagata Buhin Seizo Kk Die assembly for plastic working
JP2002239663A (en) * 2001-02-21 2002-08-27 Taiho Kogyo Co Ltd Disk member and its forming method
JP2002239643A (en) * 2001-02-21 2002-08-27 Bl Engineering:Kk Method of machining sealing cap for sealed type battery
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JP2004106018A (en) * 2002-09-18 2004-04-08 Ricoh Co Ltd Metallic plate material provided with burring-shape part
JP2004127451A (en) * 2002-10-04 2004-04-22 Fuji Photo Film Co Ltd Method of forming projection on metal plate of disk cartridge
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012215224A (en) * 2011-03-31 2012-11-08 Hitachi Automotive Systems Ltd Cylinder member and manufacturing method therefor
CN107448442A (en) * 2016-05-31 2017-12-08 祥伟自动科技股份有限公司 Connecting seat and connecting seat forming method
JP2019148245A (en) * 2018-02-28 2019-09-05 トヨタ自動車株式会社 Oil cooler
JP7110620B2 (en) 2018-02-28 2022-08-02 トヨタ自動車株式会社 oil cooler

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