JP4609778B2 - Insert metal fitting and manufacturing method thereof - Google Patents

Insert metal fitting and manufacturing method thereof Download PDF

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JP4609778B2
JP4609778B2 JP2007141050A JP2007141050A JP4609778B2 JP 4609778 B2 JP4609778 B2 JP 4609778B2 JP 2007141050 A JP2007141050 A JP 2007141050A JP 2007141050 A JP2007141050 A JP 2007141050A JP 4609778 B2 JP4609778 B2 JP 4609778B2
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cylindrical shaft
main body
shaft main
die
axial direction
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JP2008273160A (en
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正敏 各務
正廣 松井
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株式会社阪村エンジニアリング
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Description

本発明は、主として樹脂製品内にその製品時に埋め込まれて固定されるインサート金具及びその製造方法に関するものである。  The present invention mainly relates to an insert fitting that is embedded and fixed in a resin product at the time of the product, and a method for manufacturing the same.

技術背景Technical background

従来、図１９、図２０に示すように樹脂製品用のインサート金具としては、筒軸本体Ｇ１の一端部に鍔部Ｇ２を備えると共に、筒軸本体Ｇ１の中間部に筒軸本体Ｇ１の軸線方向と同方向に延びる係止突起Ｇ３が突設され、かつ係止突起Ｇ３から他端わたって筒軸本体Ｇ１の軸線方向と同方向に延びる溝Ｇ４が形成された構造となっている。  Conventionally, as shown in FIG. 19 and FIG. 20, the insert fitting for a resin product includes a collar portion G2 at one end portion of the cylindrical shaft main body G1, and an axial direction of the cylindrical shaft main body G1 at an intermediate portion of the cylindrical shaft main body G1. And a groove G4 extending in the same direction as the axial direction of the cylindrical shaft main body G1 is formed extending from the locking protrusion G3 to the other end.

また、その製造方法としては、パンチのダイへの打ち込みにより、一端部に鍔部を備えた筒軸本体の外側面の一部をダイの内面に設けられた突起形成用突条によって溝Ｇ４を付けながら押し上げて係止突起Ｇ３を形成するようにしている。  In addition, as a manufacturing method thereof, by driving the punch into the die, a part of the outer surface of the cylindrical shaft body having a flange portion at one end is formed into the groove G4 by the protrusion forming protrusion provided on the inner surface of the die. The locking projection G3 is formed by pushing up while attaching.

そして、主として後工程で上記筒軸本体Ｇ１の貫通孔にネジ加工が施され、その上で樹脂製品の製造時に製品内に埋め込まれて固定される。そのとき係止突起Ｇ３が金具の抜け止め及び回り止めとして作用するようになされている。
特開平４−９１８４９号 Then, a screw process is performed on the through-hole of the cylindrical shaft main body G1 mainly in a later process, and then, it is embedded and fixed in the product when the resin product is manufactured. At that time, the locking projection G3 acts to prevent the metal fitting from coming off and rotating.
JP-A-4-91849

ところが、上記した従来のインサート金具によれば、鍔部Ｇ２を備えた筒軸本体Ｇ１の内面にネジ加工を施す場合、筒軸本体Ｇ１の外周を保持して芯出しを行うのであるが、係止突起Ｇ３が邪魔になって筒軸本体Ｇ１を保持しづらく、その芯出し作業が行いにくい問題があった。つまり、筒軸本体Ｇ１の外周面から部分的に突出する係止突起Ｇ３を保持して芯出しを行うことになるので、その保持が不安定で芯出しが正確に行ないにくいものであった。  However, according to the conventional insert fitting described above, when threading is performed on the inner surface of the cylindrical shaft main body G1 having the flange portion G2, the outer periphery of the cylindrical shaft main body G1 is held for centering. There is a problem that the stop projection G3 is obstructive and it is difficult to hold the cylindrical shaft main body G1, and the centering operation is difficult to perform. That is, since the centering is performed by holding the locking projection G3 partially protruding from the outer peripheral surface of the cylindrical shaft main body G1, the holding is unstable and the centering is difficult to perform accurately.

そこで、本発明は筒軸本体の外周面に係止突起を突設しなくとも溝形状を工夫することにより金具の抜け止め及び回り止め作用を与えられるようにして、筒軸本体の内面へのネジ加工時の芯出しが正確に行えるインサート金具及びその製造方法の提供を課題とする。  Therefore, the present invention can prevent the fitting from coming off and prevent rotation by devising the groove shape without providing a locking projection on the outer peripheral surface of the cylindrical shaft main body. It is an object of the present invention to provide an insert fitting that can be accurately centered during screw machining and a method for manufacturing the same.

上記課題を解決するために、本願の請求項１に記載の発明は、筒軸本体の一端部に鍔部を備えてなるインサート金具において、筒軸本体の他端部に先き細まりのテーパ部を形成する一方、多段式圧造成形機による圧造成形によりテーパ部から筒軸本体にわたりかつ筒軸本体の軸線方向に対して傾斜する第１、第２傾斜係合溝を複数本凹設すると共に、これら隣り合う第１の傾斜係合溝と第２傾斜係合溝との上記軸線方向に対する傾斜方向を互いに逆方向とし、かつハの字と逆ハの字が交互に現われるように配置したことを特徴とする。In order to solve the above-described problem, the invention according to claim 1 of the present application is an insert fitting including a flange portion at one end portion of a cylindrical shaft main body, and a tapered taper at the other end portion of the cylindrical shaft main body. while forming the parts, first, a plurality of second inclined engagement groove present recessed inclined with respect to the axial direction of the Li Kui cylinder shaft body cotton in the cylinder axis body from the tapered portion by forging molding by multistage heading molding machine In addition, the first inclined engaging groove and the second inclined engaging groove adjacent to each other are arranged so that the inclined directions with respect to the axial direction are opposite to each other , and the letter C and the inverted letter C appear alternately. characterized in that it was.

また、本願の請求項２に記載の発明は、筒軸本体の一端部に鍔部を備えてなるインサート金具において、筒軸本体の他端部に先き細まりのテーパ部を介して小径筒軸部を形成する一方、多段式圧造成形機による圧造成形によりテーパ部から筒軸本体にわたりかつ筒軸本体の軸線方向に対して傾斜する第１、第２傾斜係合溝を複数本凹設すると共に、これら隣り合う第１の傾斜係合溝と第２傾斜係合溝との上記軸線方向に対する傾斜方向を互いに逆方向とし、かつハの字と逆ハの字 が交互に現われるように配置したことを特徴とする。The invention according to claim 2 of the present application is an insert fitting comprising a flange portion at one end portion of a cylindrical shaft main body, and a small diameter cylinder through a tapered portion tapered at the other end portion of the cylindrical shaft main body. while forming the shaft part, first, a plurality of concave second inclined engagement groove which are inclined with respect to the axial direction of the Li Kui cylinder shaft body cotton in the cylinder axis body from the tapered portion by forging molding by multistage heading molding machine In addition, the inclined directions of the adjacent first inclined engaging groove and second inclined engaging groove with respect to the axial direction are opposite to each other , and the letter C and the letter C appear alternately. It is arranged .

また、本願の請求項３に記載の発明は、筒軸本体の一端部に鍔部を備えてなるインサート金具の製造方法において、まず、パンチの前進動作によりアルミ製素材をダイ内に押し込むことにより、有底筒軸本体の底部側一端部に鍔部を備えると共に、筒軸本体の他端部に先き細まりのテーパ部を有してなる第１中間成形体を形成し、次いで、次工程でパンチの前進動作により第１中間成形体をダイ内に押し込むことにより、テーパ部から有底筒軸本体にわたると共に有底筒軸本体の軸線方向に対して一方向に傾斜する第１傾斜係合溝を所定間隔を置いて複数本凹設してなる第２中間成形体を形成し、その後、最終工程でパンチの前進動作により第２中間成形体をダイ内に押し込むことにより、有底筒軸本体の底部を打ち抜いて貫通孔を形成すると共に、テーパ部から筒軸本体にわたると共に筒軸本体の軸線方向に対して他方向に傾斜する第２傾斜係合溝を上記第１傾斜係合溝間に複数本凹設してなる最終成形品を形成したことを特徴とする。  Further, in the invention according to claim 3 of the present application, in the manufacturing method of the insert metal fitting provided with the flange portion at one end portion of the cylindrical shaft main body, first, the aluminum material is pushed into the die by the forward movement of the punch. And forming a first intermediate molded body having a flange portion at one end on the bottom side of the bottomed cylindrical shaft main body and having a tapered portion tapered at the other end of the cylindrical shaft main body. A first inclination member that extends from the tapered portion to the bottomed cylindrical shaft main body and inclines in one direction with respect to the axial direction of the bottomed cylindrical shaft main body by pushing the first intermediate formed body into the die by the forward movement of the punch in the process. A bottomed cylinder is formed by forming a second intermediate molded body having a plurality of concave grooves provided at predetermined intervals, and then pushing the second intermediate molded body into the die by a forward movement of the punch in the final step. Punching the bottom of the shaft body to form a through hole A final molded product in which a plurality of second inclined engaging grooves extending from the tapered portion to the cylindrical shaft main body and inclined in the other direction with respect to the axial direction of the cylindrical shaft main body are provided between the first inclined engaging grooves. Is formed.

また、本願の請求項４に記載の発明は、筒軸本体の一端部に鍔部を備えてなるインサート金具の製造方法において、まず、パンチの前進動作によりアルミ製素材をダイ内に押し込むことにより、有底筒軸本体の底部側一端部に鍔部を備えると共に、筒軸本体の他端部に先き細まりのテーパ部を介して小径筒軸部を有してなる第１中間成形体を形成し、次いで、次工程でパンチの前進動作により第１中間成形体をダイ内に押し込むことにより、テーパ部から有底筒軸本体にわたると共に有底筒軸本体の軸線方向に対して一方向に傾斜する第１傾斜係合溝を所定間隔を置いて複数本凹設してなる第２中間成形体を形成し、その後、最終工程でパンチの前進動作により第２中間成形体をダイ内に押し込むことにより、有底筒軸本体の底部を打ち抜いて貫通孔を形成すると共に、テーパ部から筒軸本体にわたると共に筒軸本体の軸線方向に対して他方向に傾斜する第２傾斜係合溝を上記第１傾斜係合溝間に複数本凹設してなる最終成形品を形成したことを特徴とする。  Further, in the invention according to claim 4 of the present application, in the manufacturing method of the insert metal fitting provided with the flange portion at one end portion of the cylindrical shaft main body, first, the aluminum material is pushed into the die by the forward movement of the punch. A first intermediate molded body comprising a flange portion at one end on the bottom side of the bottomed cylindrical shaft main body and having a small-diameter cylindrical shaft portion at the other end of the cylindrical shaft main body through a tapered portion tapered. Then, in the next step, the first intermediate formed body is pushed into the die by the forward movement of the punch, thereby extending from the tapered portion to the bottomed cylindrical shaft main body and in one direction with respect to the axial direction of the bottomed cylindrical shaft main body. Forming a second intermediate formed body having a plurality of first inclined engaging grooves inclined at a predetermined interval, and then moving the second intermediate formed body into the die by the forward movement of the punch in the final step. Punches the bottom of the bottomed cylinder shaft body by pushing A plurality of second inclined engaging grooves are formed between the first inclined engaging grooves so as to form a through hole and extend from the tapered portion to the cylindrical shaft main body and are inclined in the other direction with respect to the axial direction of the cylindrical shaft main body. A final molded product is formed.

さらに、本願の請求項５に記載の発明は、請求項４に記載の最終工程において、パンチの前進動作により第２中間成形体をダイ内に押し込むとき、テーパ部の先端側部分をテーパ部の後端側に押し上げてテーパ面中間部に抜け止め用突部を突設してなる最終成形品を形成したことを特徴とする。  Furthermore, in the invention according to claim 5 of the present application, in the final step according to claim 4, when the second intermediate formed body is pushed into the die by the forward movement of the punch, the tip side portion of the tapered portion is It is characterized in that a final molded product is formed by pushing up to the rear end side and projecting a protrusion for preventing the protrusion at an intermediate portion of the tapered surface.

本発明のインサート金具によれば、上記した構成により樹脂製品の製造時に製品内に埋め込まれて固定される際、鍔付筒軸本体の軸線方向に対する傾斜方向が互いに逆方向となる第１、第２傾斜係合溝内に樹脂が入り込み、その入り込んだ樹脂が金具の抜け止めとまわり止めとして作用することになる。しかも、隣り合う第１の傾斜係合溝と第２傾斜係合溝との上記軸線方向に対する傾斜方向を互いに逆方向とし、かつハの字と逆ハの字が交互にあらわれるように配置したので、ネジ孔を除くインサート金具の第１、第２傾斜係合溝形成までの一連の加工工程を多段式圧造成形機により連続的に行うことが可能で、能率よく製造することができる。さらに、鍔付筒軸本体の外周面に係止突起が突出することがないので、鍔付筒軸本体の内面へのネジ孔加工時、筒軸本体の外周を直接保持するだけでその芯出しが容易に行え、ネジ加工が簡単かつ正確に行うことができる。According to the insert metal fitting of the present invention, the first and first tilt directions with respect to the axial direction of the flanged cylindrical shaft body are opposite to each other when the resin is manufactured by being embedded in the resin product and fixed by the above-described configuration. The resin enters the two inclined engagement grooves, and the entered resin acts as a stopper and a stopper for the metal fitting. Moreover, the first inclined engagement groove and the second inclined engagement groove adjacent to each other are arranged so that the inclination directions with respect to the axial direction are opposite to each other , and the letter C and the letter C are alternately displayed . Therefore, a series of processing steps up to the formation of the first and second inclined engagement grooves of the insert fitting excluding the screw holes can be continuously performed by the multistage forging machine, and can be efficiently manufactured. Further, since the locking projection does not protrude from the outer peripheral surface of the flanged cylindrical shaft body, when the screw hole is drilled into the inner surface of the flanged cylindrical shaft main body, the centering of the cylindrical shaft main body can be performed simply by holding it directly Can be easily performed, and screw machining can be performed easily and accurately.

また、本発明のインサート金具の製造方法によれば、上記した構成によりネジ加工を除いた、インサート金具の抜け止めと回り止め機能を発揮する第１、第２傾斜溝形成までの一連の加工工程を多段式圧造成形機により連続的に行うことができる。したがって、第１、第２傾斜係合溝が形成された樹脂製品用のインサート金具を能率よく製造することができる。さらに、鍔付筒軸本体の外周面に係止突起が突出することがないので、鍔付筒軸本体の貫通孔へのネジ孔加工時、筒軸本体の外周を直接保持するだけでその芯出しが楽に行え、ネジ加工が簡単かつ正確に行うことができる。  Moreover, according to the manufacturing method of the insert metal fitting of the present invention, a series of processing steps up to the formation of the first and second inclined grooves exhibiting the function of preventing the insert metal from being removed and preventing the rotation by the above-described configuration, excluding the screw machining. Can be continuously performed by a multistage forging machine. Therefore, the insert fitting for resin products in which the first and second inclined engagement grooves are formed can be efficiently manufactured. Further, since the locking projection does not protrude from the outer peripheral surface of the flanged cylindrical shaft body, when the threaded hole is formed in the through hole of the flanged cylindrical shaft body, the core is simply retained by holding the outer periphery directly. Easy to put out, and screw processing can be done easily and accurately.

さらに、最終工程において、パンチの前進動作により第２中間成形体をダイ内に押し込むとき、テーパ部の先端側部分をテーパ部の後端側に押し上げてテーパ面中間部に抜け止め用突部を突設してなる最終成形品を形成するようにすれば、この抜け止め用突部により一層抜け止め作用を高めることができるので好ましい。  Furthermore, in the final step, when the second intermediate formed body is pushed into the die by the forward movement of the punch, the tip end portion of the taper portion is pushed up to the rear end side of the taper portion, and the protrusion for preventing slippage is provided at the taper surface intermediate portion. It is preferable to form a final molded product by projecting, since this retaining projection can further enhance the retaining function.

発明を実施するため最良の形態BEST MODE FOR CARRYING OUT THE INVENTION

以下、本発明の実施の形態を図面に基づいて説明する。
図１及び図２は、本発明に係るインサート金具を示すもので、該金具１は、筒軸本体１１の一端部に鍔部１２を備え、筒軸本体１１の他端部に先き細まりのテーパ部１３を介して小径筒軸部１４を形成する一方、テーパ部１３から筒軸本体１１にわたると共に筒軸本体１１の軸線方向に対して傾斜する第１、第２傾斜係合溝１５，１６を複数本設けると共に、隣り合う第１傾斜係合溝１５と第２傾斜係合溝１６との上記軸線方向に対する傾斜方向が互に逆方向となるように、つまりハの字と逆ハの字が交互に現われるように配置されている。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show an insert fitting according to the present invention. The fitting 1 is provided with a flange portion 12 at one end portion of a cylindrical shaft main body 11 and is tapered at the other end portion of the cylindrical shaft main body 11. The first and second inclined engaging grooves 15 that form the small-diameter cylindrical shaft portion 14 via the tapered portion 13, and extend from the tapered portion 13 to the cylindrical shaft main body 11 and are inclined with respect to the axial direction of the cylindrical shaft main body 11, 16 are provided, and the first inclined engagement groove 15 and the second inclined engagement groove 16 adjacent to each other so that the inclination directions with respect to the axial direction are opposite to each other. The characters are arranged so that they appear alternately.

インサート金具１は、アルミ製で多段式圧造成形機により圧造成形され、図３に示すように通常は後工程で上記鍔部１２、筒軸本体１１、テーパ部１３、小径筒軸部１４にわたる貫通孔１７にネジ加工が施され、ネジ孔１８が形成されている。  The insert fitting 1 is made of aluminum and formed by forging by a multistage forging machine, and as shown in FIG. 3, the insert metal fitting 1 is usually penetrated through the flange portion 12, the cylindrical shaft body 11, the tapered portion 13, and the small diameter cylindrical shaft portion 14 in a subsequent process. The hole 17 is threaded to form a screw hole 18.

そして、インサート金具１は、図３に示すように、樹脂製品Ｓの製造時に製品内に埋め込まれて固定される。そのとき筒軸本体１１の軸線方向に対する傾斜方向が互に逆方向となる第１、第２傾斜係合溝１５，１６内に樹脂が入り込み、その入り込んだ樹脂が金具１の抜け止めと回り止めとして作用することになる。  And the insert metal fitting 1 is embedded and fixed in the product at the time of manufacture of the resin product S, as shown in FIG. At that time, the resin enters the first and second inclined engaging grooves 15 and 16 in which the inclination directions with respect to the axial direction of the cylindrical shaft main body 11 are opposite to each other, and the inserted resin prevents the metal fitting 1 from coming off and rotating. Will act as.

また、鍔部１２を備えた筒軸本体１１の外周に第１、第２傾斜係合溝を設けるだけで良いので、従来のように筒軸本体１１の外周に係止突起が突出ことがなくこれにより上記貫通孔１７へのネジ加工時に筒軸本体１１の外周をそのまま保持するだけで容易に芯出しが行え、ネジ加工が楽にかつ正確に行える。  Further, since it is only necessary to provide the first and second inclined engaging grooves on the outer periphery of the cylindrical shaft main body 11 provided with the flange 12, there is no protrusion of the locking projection on the outer periphery of the cylindrical shaft main body 11 as in the prior art. As a result, centering can be easily performed simply by holding the outer periphery of the cylindrical shaft body 11 as it is when threading the through-hole 17, and threading can be performed easily and accurately.

次に、インサート金具の製造方法について説明する。
まず、図４〜図１６に示すように、互いに相対向するダイとパンチとにより構成された多段式圧造成形機を用い、該圧造成形機は第１〜第６の工程からなっており、各工程は、それぞれの工程に必要な円柱状のパンチ２１，３１，４１，５１，６１，７１とそれぞれに対応する略円柱状のダイ２２，３２，４２，５２，６２，７２とを使用する。Next, the manufacturing method of an insert metal fitting is demonstrated.
First, as shown in FIGS. 4 to 16, a multi-stage forging machine composed of a die and a punch facing each other is used, and the forging machine consists of first to sixth steps. In the process, cylindrical punches 21, 31, 41, 51, 61, 71 necessary for the respective processes and substantially cylindrical dies 22, 32, 42, 52, 62, 72 corresponding to the respective processes are used.

そして、図４及び図５に示すように、第１工程においては、パンチ２１の前進動作により断面円形状のアルミ素材からなる第１工程材料Ａをダイ２２側へ押し込み、その押し込み時に第１工程材料Ａを据え込み加工して大径化を図ると共に端面矯正を行う。  4 and 5, in the first step, the first step material A made of an aluminum material having a circular cross section is pushed into the die 22 by the forward movement of the punch 21, and the first step is performed at the time of the pushing. The material A is upset to increase the diameter and correct the end face.

据え込み加工された第２工程材料Ｂは、ダイ２２の底部を構成する押し出しピン２３によりダイ２１内から押し出される。押し出された第２工程材料Ｂは、素材移送用チャックのチャック爪（図示せず）により挟持されて第２工程のダイ３２の前面位置に移送される。  The second process material B that has been subjected to upsetting is extruded from the inside of the die 21 by the extrusion pin 23 that constitutes the bottom of the die 22. The extruded second process material B is nipped by a chuck claw (not shown) of the material transfer chuck and transferred to the front position of the die 32 in the second process.

図６及び図７に示すように、第２工程においては、突部３１ａをもつパンチ３１の前進動作により第２工程素材Ｂをダイ３２内に押し込み、その押し込み時に第２工程素材Ｂの一端面に浅い凹所Ｃ１を形成する。  As shown in FIGS. 6 and 7, in the second step, the second step material B is pushed into the die 32 by the forward movement of the punch 31 having the protrusion 31a, and one end surface of the second step material B is pushed at the time of the pushing. A shallow recess C1 is formed.

凹所Ｃ１が形成された第３工程材料Ｃは、ダイ３２の底部を構成する押し出しピン３３によりダイ３２内から押し出される。押し出された第３工程材料Ｃは、素材移送用チャックのチャック爪（図示せず）により挟持されて第３工程のダイ４２の前面位置に移送される。  The third process material C in which the recess C <b> 1 is formed is extruded from the die 32 by the extrusion pin 33 that constitutes the bottom of the die 32. The extruded third process material C is clamped by a chuck claw (not shown) of the material transfer chuck and transferred to the front position of the die 42 in the third process.

図８、図９に示すように、第３工程においては、ダイ４２の孔径よりも小径なパンチ４１の前進動作により第３工程素材Ｃをダイ４２内に押し込み、第３工程素材Ｃの浅い凹所Ｃ１部分をさらに深くした凹所部Ｄ１を有する断面コ字状の第４工程材料Ｄを形成する。  As shown in FIGS. 8 and 9, in the third process, the third process material C is pushed into the die 42 by the forward movement of the punch 41 having a diameter smaller than the hole diameter of the die 42, so that the shallow recesses of the third process material C are formed. A fourth process material D having a U-shaped cross section having a recessed portion D1 in which the portion C1 is further deepened is formed.

凹所部Ｄ１が形成された第４工程材料Ｄは、ダイ４２の底部を構成する押し出しピン４３によりダイ４２内から押し出される。押し出された第４工程材料Ｄは、素材移送用チャックのチャック爪（図示せず）により挟持され、凹所部Ｄ１の開口面がダイ側を向くように１８０°回転されたうえで第４工程のダイ５２の前面位置に移送される。  The 4th process material D in which the recessed part D1 was formed is extruded from the inside of the die | dye 42 by the extrusion pin 43 which comprises the bottom part of the die | dye 42. FIG. The extruded fourth process material D is clamped by a chuck claw (not shown) of the chuck for material transfer, and is rotated by 180 ° so that the opening surface of the recess D1 faces the die side. To the front of the die 52.

図１０及び図１１に示すように、第４工程においては、突部５１ａをもつパンチ５１と、中心部に成形ピン５３と底部の一部を構成する筒状ストリッパー５４とを有するダイ５２とを備え、ダイ５２の成形孔５２ａはその口部５２ｂが段状に拡径され、また奥部側に奥細まりのテーパ面５２ｃと小径孔部５２ｄとが形成されている。そして、パンチ５１の前進動作により第４工程素材Ｄをダイ５２内に押し込むことにより、有底筒軸本体Ｅ１の底部側一端部に鍔部Ｅ２を備えると共に、筒軸本体Ｅ１の他端部に先き細まりのテーパ部Ｅ３を介して小径筒軸部Ｅ４を有してなる第５工程材料（第１中間成形体）Ｅを形成する。  As shown in FIGS. 10 and 11, in the fourth step, a punch 51 having a protrusion 51a and a die 52 having a forming pin 53 and a cylindrical stripper 54 constituting a part of the bottom at the center. In addition, the forming hole 52a of the die 52 has a mouth portion 52b whose diameter is increased stepwise, and a tapered surface 52c and a small diameter hole portion 52d which are narrower on the back side are formed. Then, by pushing the fourth process material D into the die 52 by the forward movement of the punch 51, the bottom side one end portion of the bottomed cylindrical shaft main body E1 is provided with the flange portion E2, and the other end portion of the cylindrical shaft main body E1 is provided. A fifth process material (first intermediate molded body) E having a small-diameter cylindrical shaft portion E4 is formed through a tapered portion E3 that is tapered.

第５工程材料Ｅは、筒状ストリッパー５４によりダイ５２内から押し出される。押し出された第５工程材料Ｅは、素材移送用チャックのチャック爪（図示せず）により挟持されて第５工程のダイ６２の前面位置に移送される。  The fifth process material E is extruded from the die 52 by the cylindrical stripper 54. The extruded fifth process material E is nipped by a chuck claw (not shown) of the material transfer chuck and transferred to the front surface position of the die 62 in the fifth process.

図１２及び図１３に示すように、第５工程においては、突部６１ａをもつパンチ６１と、中心部に成形ピン６３と底部の一部を構成する筒状ストリッパー６４とを有するダイ６２とを備え、ダイ６２の成形孔６２ａはその口部６２ｂが段状に拡径され、また奥部側に奥細まりのテーパ面６２ｃと小径孔部６２ｄとが形成されると共に、テーパ面６２ｃから成形孔６２ａにわたると共に成形孔６２ａの軸線方向に対して一方向に傾斜する第１傾斜突条６２ｅを所定間隔を置いて複数本（図では２本）設けている。そして、パンチ６１の前進動作により第５工程材料Ｅをダイ６２内に押し込む。これにより第５工程材料Ｅのテーパ部Ｅ３から筒軸本体Ｅ１にわたると共に筒軸本体Ｅ１の軸線方向に対して一方向に傾斜する第１傾斜係合溝Ｆ５を所定間隔を置いて複数本（図では２本）凹設してなる第６工程材料（第２中間成形体）Ｆを形成する。  As shown in FIGS. 12 and 13, in the fifth step, a punch 61 having a protrusion 61a, and a die 62 having a forming pin 63 and a cylindrical stripper 64 constituting a part of the bottom at the center. The die 62 has a molding hole 62a whose stepped portion 62b has a stepped diameter, and a tapered surface 62c and a small-diameter hole portion 62d are formed on the back side, and the molding surface 62c is formed from the tapered surface 62c. A plurality (two in the figure) of first inclined protrusions 62e that extend over the hole 62a and incline in one direction with respect to the axial direction of the forming hole 62a are provided. Then, the fifth process material E is pushed into the die 62 by the forward movement of the punch 61. Accordingly, a plurality of first inclined engagement grooves F5 extending from the tapered portion E3 of the fifth process material E to the cylindrical shaft main body E1 and inclined in one direction with respect to the axial direction of the cylindrical shaft main body E1 (see FIG. Then, 2) a sixth process material (second intermediate formed body) F is formed.

第１傾斜係合溝Ｆ５が形成された第６工程材料Ｆは、筒状ストリッパー６４によりダイ６２内から押し出される。このとき、第６工程材料Ｆは第１傾斜係合溝Ｆ５が第１傾斜突条６２ｅに倣って抜け出し移動するようにダイ６２に対して少し回転しながら押し出されることになる。押し出された第６工程材料Ｆは、素材移送用チャックのチャック爪（図示せず）により挟持されて第６工程のダイの前面位置に移送される。  The sixth process material F in which the first inclined engagement groove F5 is formed is pushed out of the die 62 by the cylindrical stripper 64. At this time, the sixth process material F is pushed out while rotating slightly with respect to the die 62 so that the first inclined engagement groove F5 moves out along the first inclined protrusion 62e. The extruded sixth process material F is nipped by a chuck claw (not shown) of the material transfer chuck and transferred to the front position of the die of the sixth process.

図１４〜図１６に示すように、第６工程においては、打ち抜き用小径軸部７１ａをもつパンチ７１と、底部の一部を構成する筒状ストリッパー７３とを有するダイ７２とを備え、ダイ７２の成形孔７２ａはその口部７２ｂが段状に拡径され、また奥部に奥細まりのテーパ面７２ｃと小径孔部７２ｄとが形成されると共に、テーパ面７２ｃから成形孔７２ａにわたると共に成形孔７２ａの軸線方向に対して他方向に傾斜する第２傾斜突条７２ｅを所定間隔を置いて複数本（図では２本）設けている。そして、パンチ７１の前進動作により第６工程材料Ｆをダイ７２内に押し込む。これにより図１５に示すようにパンチ７１の小径軸部７１ａで筒軸本体Ｆ１の底部を打ち抜いて鍔部１２、筒軸本体１１、テーパ部１３、小径筒軸部１４にわたって貫通する貫通孔１７を形成すると共に、テーパ部１３から筒軸本体１１にわたると共に筒軸本体１１の軸線方向に対して他方向に傾斜する第２傾斜係合溝１６を第１傾斜係合溝１５，１５間に複数本（図では２本）凹設し、隣り合う第１傾斜係合溝１５と第２傾斜係合溝１６との上記軸線方向に対する傾斜方向が互いに逆方向となるように、つまりハの字と逆ハの字が交互に現われるように配置形成されたインサート金具１（最終成形品）が形成される。  As shown in FIGS. 14 to 16, in the sixth step, a die 71 having a punch 71 having a small diameter shaft portion 71a for punching and a cylindrical stripper 73 constituting a part of the bottom portion is provided. In the forming hole 72a, the opening 72b has a stepped diameter, and a tapered surface 72c and a small-diameter hole 72d are formed in the back, and the forming hole 72a extends from the tapered surface 72c. A plurality (two in the figure) of second inclined protrusions 72e inclined in the other direction with respect to the axial direction of the hole 72a are provided at a predetermined interval. Then, the sixth process material F is pushed into the die 72 by the forward movement of the punch 71. As a result, as shown in FIG. 15, the bottom portion of the cylindrical shaft main body F <b> 1 is punched out by the small diameter shaft portion 71 a of the punch 71, and the through hole 17 penetrating through the flange portion 12, the cylindrical shaft main body 11, the tapered portion 13, A plurality of second inclined engagement grooves 16 are formed between the first inclined engagement grooves 15 and 15, which are formed and extend from the tapered portion 13 to the cylindrical shaft main body 11 and are inclined in the other direction with respect to the axial direction of the cylindrical shaft main body 11. (Two in the figure) Concavities are provided so that the inclined directions of the adjacent first inclined engaging groove 15 and second inclined engaging groove 16 with respect to the axial direction are opposite to each other, that is, opposite to the letter C. Insert metal fittings 1 (final molded product) are formed and arranged so that the letter C appears alternately.

インサート金具１は、筒状ストリッパー７３によりダイ７２内から押し出される。このとき、インサート金具１は第２傾斜係合溝１６が第２傾斜突条７２ｅに倣って抜け出し移動するようにダイ７２に対して少し回転しながら押し出されることになる。  The insert fitting 1 is pushed out of the die 72 by a cylindrical stripper 73. At this time, the insert fitting 1 is pushed out while slightly rotating with respect to the die 72 so that the second inclined engagement groove 16 moves out along the second inclined protrusion 72e.

そして、以上のように構成されたインサート金具１は、後工程で上記筒軸本体１１の貫通孔１７にネジ加工が施され、その上で樹脂製品の製造時に製品内に埋め込まれて固定される。そのとき筒軸本体の軸線方向に対する傾斜方向が互に逆方向となる各第１、第２傾斜係合溝１５，１５，１６，１６内に樹脂が入り込み、その入り込んだ樹脂が金具の抜け止めと回り止めとして作用することになる。  And the insert metal fitting 1 comprised as mentioned above is threaded in the through-hole 17 of the said cylindrical shaft main body 11 by a post process, and is embedded and fixed in a product at the time of manufacture of a resin product on it. . At that time, the resin enters the first and second inclined engaging grooves 15, 15, 16, and 16 in which the inclination directions with respect to the axial direction of the cylindrical shaft main body are opposite to each other, and the inserted resin prevents the fitting from coming off. It will act as a detent.

以上のように本発明のインサート金具の製造方法によれば、ネジ加工を除いたインサート金具１の抜け止めと回り止め機能を発揮する第１、第２傾斜係合溝１５，１５，１６，１６の形成までの一連の加工工程を多段式圧造成形機により連続的に行うことができる。したがって、第１、第２傾斜係合溝１５，１５，１６，１６が形成された樹脂製品用のインサート金具を能率よく製造することができる。その上、従来のように鍔付筒軸本体１１の外周面に係止突起が突出することがないので、鍔付筒軸本体１１の貫通孔１７へのネジ孔加工時、筒軸本体１１の外周を直接保持することによりその芯出しが容易に行え、そのネジ加工が簡単かつ正確に行うことができる。  As described above, according to the insert fitting manufacturing method of the present invention, the first and second inclined engaging grooves 15, 15, 16, 16 exhibiting the function of preventing the insert fitting 1 from being removed and preventing the rotation of the insert fitting 1 except for threading. A series of processing steps up to the formation of can be continuously performed by a multistage forging machine. Therefore, the insert fitting for resin products in which the first and second inclined engagement grooves 15, 15, 16, 16 are formed can be efficiently manufactured. In addition, since the locking projection does not protrude from the outer peripheral surface of the flanged cylindrical shaft body 11 as in the prior art, when the threaded hole is formed in the through hole 17 of the flanged cylindrical shaft body 11, By directly holding the outer periphery, the centering can be easily performed, and the screw machining can be easily and accurately performed.

さらに、図１７に示すように最終工程において、パンチ７１のダイ７２への打ち込みにより、有底筒軸本体Ｆ１の底部を打ち抜いて鍔部１２及び筒軸本体１１を貫通させると共に、テーパ部１３の小径側を押し上げテーパー面の中間部に抜け止め用突部１９を形成してインサート金具１を成形するようにしてもよい。このように構成すれば、抜け止め用突部１９により一層抜け止め作用を高めることができる。  Furthermore, as shown in FIG. 17, in the final process, by punching the punch 71 into the die 72, the bottom portion of the bottomed cylindrical shaft main body F1 is punched to penetrate the flange portion 12 and the cylindrical shaft main body 11, and the taper portion 13 The insert metal fitting 1 may be formed by pushing up the small diameter side and forming a retaining protrusion 19 in the middle of the tapered surface. If comprised in this way, the retaining part 19 can further enhance the retaining action.

なお、以上の実施の形態では、アルミ製インサート金具１又はアルミ素材を用いたものについて説明したけれども、アルミ製又はアルミ素材のみに限定されるものではない。また、貫通孔１７にネジ加工を施してネジ孔１８を形成したものについて説明したけれども、ネジ孔１８を設けないインサート金具についても適用できることは勿論である。また、第１、第２傾斜係合溝１５，１６の本数はそれぞれ２本に限定されるものではなく、使用場所や使用状況などに応じて例えば４本や８本、或いは１２本など複数本設けてもよいし、第１、第２傾斜係合溝１５，１６は直線状に設ける他、緩やかな曲線であってもよい。  In addition, although the above embodiment demonstrated what used the aluminum insert metal fitting 1 or the aluminum raw material, it is not limited only to aluminum or an aluminum raw material. Moreover, although the screw hole 18 is formed on the through-hole 17 to form the screw hole 18, it is needless to say that the present invention can also be applied to an insert fitting in which the screw hole 18 is not provided. The number of the first and second inclined engaging grooves 15 and 16 is not limited to two, and a plurality of four, eight, or twelve, for example, are provided depending on the place of use and usage conditions. Alternatively, the first and second inclined engaging grooves 15 and 16 may be provided in a straight line shape or may be gentle curves.

また、図１８に示すように上記したインサート金具１における小径筒軸部１４をなくしたものであってもよい。この場合にも、上記したインサート金具と同様に第１、第２傾斜係合溝１５，１６によって金具１の抜け止めと回り止め作用が得られる。  Moreover, as shown in FIG. 18, the small diameter cylindrical shaft part 14 in the above-described insert fitting 1 may be eliminated. In this case as well, the first and second inclined engaging grooves 15 and 16 can prevent the metal fitting 1 from coming off and prevent it from rotating as in the case of the insert metal fitting described above.

この小径筒軸部１４をもたないインサート金具１を製造する場合には、上記したインサート金具の製造方法とほぼ同様の製造方法で行うと共に、その第４工程において有底筒軸本体Ｅ１の底部側一端部に鍔部Ｅ２を備えると共に、筒軸本体Ｅ１の他端部に先き細まりのテーパ部Ｅ３を有してなる第５工程材料（第１中間成形体）Ｅを形成するようにすればよい。  When manufacturing the insert fitting 1 having no small-diameter cylindrical shaft portion 14, the manufacturing method is substantially the same as the manufacturing method of the insert fitting described above, and the bottom portion of the bottomed cylindrical shaft main body E1 in the fourth step. A fifth process material (first intermediate molded body) E having a flange E2 at one end on the side and a tapered portion E3 tapered at the other end of the cylindrical shaft body E1 is formed. do it.

本考案に係るインサート金具の斜視図である。  It is a perspective view of the insert metal fitting concerning the present invention. 同インサート金具の正面図である。  It is a front view of the insert metal fitting. 使用状態を示す縦断面図である。  It is a longitudinal cross-sectional view which shows a use condition. 第１工程の加工前を示す断面図である。  It is sectional drawing which shows the process before a 1st process. 第１工程の加工後を示す断面図である。  It is sectional drawing which shows the process after a 1st process. 第２工程の加工前を示す断面図である。  It is sectional drawing which shows the process before a 2nd process. 第２工程の加工後を示す断面図である。  It is sectional drawing which shows the process after a 2nd process. 第３工程の加工前を示す断面図である。  It is sectional drawing which shows before the process of a 3rd process. 第３工程の加工後を示す断面図である。  It is sectional drawing which shows the process after a 3rd process. 第４工程の加工前を示す断面図である。  It is sectional drawing which shows before the process of a 4th process. 第４工程の加工後を示す断面図である。  It is sectional drawing which shows the process after a 4th process. 第５工程の加工前を示す断面図である。  It is sectional drawing which shows before the process of a 5th process. 第５工程の加工後を示す断面図である。  It is sectional drawing which shows the process after a 5th process. 第６工程の加工前を示す断面図である。  It is sectional drawing which shows before the process of a 6th process. 第６工程の加工後を示す一部断面図である。  It is a partial cross section figure showing after processing of the 6th process. 第６工程の加工後を示す断面図である。  It is sectional drawing which shows the process after a 6th process. 第６工程の別の実施の形態を示す断面図である。  It is sectional drawing which shows another embodiment of a 6th process. インサート金具の別の実施の形態を示す側面図である。  It is a side view which shows another embodiment of an insert metal fitting. 従来のインサート金具の斜視図である。  It is a perspective view of the conventional insert metal fitting. 同インサート金具の断面図である。  It is sectional drawing of the insert metal fitting.

符号の説明Explanation of symbols

１ インサート金具
１１ 筒軸本体
１２ 鍔部
１３ テーパ部
１４ 小径筒軸部
１５ 第１傾斜係合部
１６ 第２傾斜係合部DESCRIPTION OF SYMBOLS 1 Insert metal fitting 11 Cylindrical shaft main body 12 ridge part 13 Tapered part 14 Small diameter cylindrical shaft part 15 1st inclination engaging part 16 2nd inclination engaging part

Claims (5)

筒軸本体の一端部に鍔部を備えてなるインサート金具において、筒軸本体の他端部に先き細まりのテーパ部を形成する一方、多段式圧造成形機による圧造成形によりテーパ部から筒軸本体にわたりかつ筒軸本体の軸線方向に対して傾斜する第１、第２傾斜係合溝を複数本凹設すると共に、これら隣り合う第１の傾斜係合溝と第２傾斜係合溝との上記軸線方向に対する傾斜方向を互いに逆方向とし、かつハの字と逆ハの字が交互に現われるように配置したことを特徴とするインサート金具。In the insert metal fitting comprising comprises a flange portion at one end of the cylindrical shaft body, while forming the tip-out taper portion of the convergent in the other end portion of the cylindrical shaft body, the cylinder from the tapered portion by forging molding by multistage heading molding machine first, as well as a plurality of recessed a second inclined engagement groove, a first inclined engaging groove and the second inclined engaging mutually these neighboring inclined with respect to the axial direction of the Li Kui cylinder shaft body cotton in the shaft body An insert fitting characterized in that the inclined direction of the groove with respect to the axial direction is opposite to each other , and the letter C and the letter C are alternately arranged . 筒軸本体の一端部に鍔部を備えてなるインサート金具において、筒軸本体の他端部に先き細まりのテーパ部を介して小径筒軸部を形成する一方、多段式圧造成形機による圧造成形によりテーパ部から筒軸本体にわたりかつ筒軸本体の軸線方向に対して傾斜する第１、第２傾斜係合溝を複数本凹設すると共に、これら隣り合う第１の傾斜係合溝と第２傾斜係合溝との上記軸線方向に対する傾斜方向を互いに逆方向とし、かつハの字と逆ハの字が交互に現われるように配置したことを特徴とするインサート金具。In the insert metal fitting comprising comprises a flange portion at one end of the cylindrical shaft body, while forming a small-diameter cylindrical shaft portion through the tapered portion of the previously-out the convergent at the other end of the cylindrical shaft body, by multistage heading molding machine first, a second inclined engagement groove with which a plurality of recessed, the first ramp engaging mutually these neighboring inclined with respect to the axial direction of the Li Kui cylinder shaft body cotton in the cylinder axis body from the tapered portion by forging molding An insert fitting, wherein the groove and the second inclined engagement groove are arranged so that the inclined directions with respect to the axial direction are opposite to each other , and the letter C and the inverted letter C appear alternately . 筒軸本体の一端部に鍔部を備えてなるインサート金具の製造方法において、まず、パンチの前進動作によりアルミ製素材をダイ内に押し込むことにより、有底筒軸本体の底部側一端部に鍔部を備えると共に、筒軸本体の他端部に先き細まりのテーパ部を有してなる第１中間成形体を形成し、次いで、次工程でパンチの前進動作により第１中間成形体をダイ内に押し込むことにより、テーパ部から有底筒軸本体にわたると共に有底筒軸本体の軸線方向に対して一方向に傾斜する第１傾斜係合溝を所定間隔を置いて複数本凹設してなる第２中間成形体を形成し、その後、最終工程でパンチの前進動作により第２中間成形体をダイ内に押し込むことにより、有底筒軸本体の底部を打ち抜いて貫通孔を形成すると共に、テーパ部から筒軸本体にわたると共に筒軸本体の軸線方向に対して他方向に傾斜する第２傾斜係合溝を上記第１傾斜係合溝間に複数本凹設してなる最終成形品を形成したことを特徴とするインサート金具の製造方法。  In the manufacturing method of an insert metal fitting having a collar at one end of the cylindrical shaft main body, first, an aluminum material is pushed into the die by the forward movement of the punch, so that the bottom end of the bottomed cylindrical shaft main body is And forming a first intermediate molded body having a tapered portion at the other end of the cylindrical shaft main body, and then, by the forward movement of the punch in the next step, By pushing into the die, a plurality of first inclined engaging grooves extending from the tapered portion to the bottomed cylindrical shaft main body and inclined in one direction with respect to the axial direction of the bottomed cylindrical shaft main body are provided at predetermined intervals. And then forming the through hole by punching out the bottom of the bottomed cylindrical shaft body by pushing the second intermediate molded body into the die by the forward movement of the punch in the final step. , Spanning from the taper part to the cylinder shaft body An insert formed by forming a plurality of second inclined engaging grooves, both of which are inclined in the other direction with respect to the axial direction of the cylindrical shaft body, between the first inclined engaging grooves. Manufacturing method of metal fittings. 筒軸本体の一端部に鍔部を備えてなるインサート金具の製造方法において、まず、パンチの前進動作によりアルミ製素材をダイ内に押し込むことにより、有底筒軸本体の底部側一端部に鍔部を備えると共に、筒軸本体の他端部に先き細まりのテーパ部を介して小径筒軸部を有してなる第１中間成形体を形成し、次いで、次工程でパンチの前進動作により第１中間成形体をダイ内に押し込むことにより、テーパ部から有底筒軸本体にわたると共に有底筒軸本体の軸線方向に対して一方向に傾斜する第１傾斜係合溝を所定間隔を置いて複数本凹設してなる第２中間成形体を形成し、その後、最終工程でパンチの前進動作により第２中間成形体をダイ内に押し込むことにより、有底筒軸本体の底部を打ち抜いて貫通孔を形成すると共に、テーパ部から筒軸本体にわたると共に筒軸本体の軸線方向に対して他方向に傾斜する第２傾斜係合溝を上記第１傾斜係合溝間に複数本凹設してなる最終成形品を形成したことを特徴とするインサート金具の製造方法。  In the manufacturing method of an insert metal fitting having a collar at one end of the cylindrical shaft main body, first, an aluminum material is pushed into the die by the forward movement of the punch, so that the bottom end of the bottomed cylindrical shaft main body is And forming a first intermediate formed body having a small diameter cylindrical shaft portion through a tapered portion at the other end of the cylindrical shaft main body, and then the forward movement of the punch in the next step By pushing the first intermediate molded body into the die by the above, the first inclined engaging groove extending from the tapered portion to the bottomed cylindrical shaft main body and inclined in one direction with respect to the axial direction of the bottomed cylindrical shaft main body is set at a predetermined interval. A second intermediate molded body is formed by placing a plurality of recesses, and then the bottom of the bottomed cylindrical shaft body is punched by pushing the second intermediate molded body into the die by a forward movement of the punch in the final process. Through holes and taper Forming a final molded product having a plurality of second inclined engaging grooves extending between the first inclined engaging grooves and extending in the other direction with respect to the axial direction of the cylindrical shaft main body over the cylindrical shaft main body. A method for producing a featured insert fitting. 最終工程において、パンチの前進動作により第２中間成形体をダイ内に押し込むとき、テーパ部の先端側部分をテーパ部の後端側に押し上げてテーパ面中間部に抜け止め用突部を突設してなる最終成形品を形成したことを特徴とする請求項４記載のインサート金具の製造方法。  In the final process, when the second intermediate formed body is pushed into the die by the forward movement of the punch, the tip end portion of the taper portion is pushed up to the rear end side of the taper portion, and a protrusion for preventing the protrusion is provided at the taper surface intermediate portion. 5. The method for manufacturing an insert fitting according to claim 4, wherein a final molded product is formed.
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JP5471314B2 (en) * 2009-11-04 2014-04-16 株式会社山口ナット Manufacturing method of insert metal fitting, and insert metal fitting manufactured by the manufacturing method
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JPS4923681U (en) * 1972-06-07 1974-02-28
JPS629737A (en) * 1985-07-09 1987-01-17 Aida Eng Ltd Clutch gear provided with drum
JPH0164410U (en) * 1987-10-19 1989-04-25
JPH11104761A (en) * 1997-10-07 1999-04-20 Akamatsu Forces Kk Cylindrical member having anti-extraction protrusions on peripheral face and its manufacture
JPH11197786A (en) * 1998-01-13 1999-07-27 Hirata Technical Co Ltd Manufacture of collar or collar nut
JP2002303362A (en) * 2001-04-05 2002-10-18 Seiko Epson Corp Connecting member and driving force transmitting member with usage of it and manufacturing method thereof
JP2003159720A (en) * 2001-11-28 2003-06-03 Mitsubishi Materials Corp Sintered product
JP2005279666A (en) * 2004-03-29 2005-10-13 Sumikin Seiatsuhin Kogyo Kk Cylindrical body manufacturing method

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Publication number Priority date Publication date Assignee Title
JPS4923681U (en) * 1972-06-07 1974-02-28
JPS629737A (en) * 1985-07-09 1987-01-17 Aida Eng Ltd Clutch gear provided with drum
JPH0164410U (en) * 1987-10-19 1989-04-25
JPH11104761A (en) * 1997-10-07 1999-04-20 Akamatsu Forces Kk Cylindrical member having anti-extraction protrusions on peripheral face and its manufacture
JPH11197786A (en) * 1998-01-13 1999-07-27 Hirata Technical Co Ltd Manufacture of collar or collar nut
JP2002303362A (en) * 2001-04-05 2002-10-18 Seiko Epson Corp Connecting member and driving force transmitting member with usage of it and manufacturing method thereof
JP2003159720A (en) * 2001-11-28 2003-06-03 Mitsubishi Materials Corp Sintered product
JP2005279666A (en) * 2004-03-29 2005-10-13 Sumikin Seiatsuhin Kogyo Kk Cylindrical body manufacturing method

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