JP6042499B1 - Method for forming rotation transmission device {MethodforFormingRotationTransferringDevice} - Google Patents
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Abstract
【課題】ダイカストによらない回転伝達装置の成形方法を提供する。【解決手段】中央に孔が形成されている円板を、上下側に配置される第１金型に固定させる第１ステップと、第１金型を回転しながら第１金型に沿って、第１、２中間形状部を成形する第２ステップと、第１部分の内側歯形に第１歯形成形部が形成されている第２金型を、第２ステップで成形された第１中間形状部の内側に配置する第３ステップと、第１中間形状部の外側でローラを加圧成形して、第２金型の第１歯形成形部に沿って歯形を成形しながら、第１部分として成形する第４ステップと、第２部分の内側歯形に第２歯形成形部が形成されている第３金型を、第２ステップで成形された第２中間形状部の内側に配置する第５ステップと、第２中間形状部の外側でローラを加圧成形して、第３金型の第２歯形成形部に沿って歯形を成形しながら、第２部分として成形する第６ステップとを含む成形。【選択図】図２A method of forming a rotation transmission device without using die casting is provided. A first step of fixing a disc having a hole in the center to a first mold disposed on the upper and lower sides, along the first mold while rotating the first mold, A second step of forming the first and second intermediate shape portions, and a second mold in which the first tooth forming shape portion is formed on the inner tooth shape of the first portion, the first intermediate shape portion formed in the second step 3rd step to be placed inside, and press forming the roller on the outside of the first intermediate shape portion, forming the tooth profile along the first tooth forming shape portion of the second mold, forming as the first part A fourth step, and a fifth step in which a third mold in which a second tooth forming portion is formed on the inner tooth profile of the second portion is disposed inside the second intermediate shape portion formed in the second step; , Press the roller on the outside of the second intermediate shape part, and form the tooth profile along the second tooth forming part of the third mold While, molding and a sixth step of molding a second portion. [Selection] Figure 2
Description
本発明は、変速機に用いられる回転伝達装置の成形方法に関し、より詳細には、流動成形工法によって臼型の動力伝達部品を成形する方法に関する。 The present invention relates to a method of forming a rotation transmission device used in a transmission, and more particularly to a method of forming a mortar-shaped power transmission component by a fluid molding method.
自動変速機には、第１側の動力を他側（第２側）にギア方式を利用して伝達する動力伝達部品が多く使用される。このような動力伝達部品は、第１側のギアと歯が当接する第１ギア部と、他側（第２側）のギアと歯が当接する第２ギア部とを備える。 Many automatic transmissions use power transmission components that transmit power on the first side to the other side (second side) using a gear system. Such a power transmission component includes a first gear portion that abuts on the first side gear and the teeth, and a second gear portion that abuts on the other side (second side) gear and the teeth.
動力伝達部品の素材にはスチールが多く使用されるが、このような場合には、鍛造工法によって成形を先に行った後、後加工によって歯を成形する。このような従来技術の一例として、２０１１年１月３１日に出願公開された韓国特許出願第１０−２０１１−０００９９３４号に開示された技術がある。 Steel is often used as the material for the power transmission component. In such a case, after forming is first performed by a forging method, teeth are formed by post-processing. As an example of such a conventional technique, there is a technique disclosed in Korean Patent Application No. 10-2011-0009934 filed on January 31, 2011.
最近では燃費向上などの理由により、車両の重量を低減させるためにアルミニウム素材が広く用いられているが、変速機に装着する動力伝達部品にアルミニウム素材を取り入れることも試されている。 Recently, aluminum materials have been widely used to reduce the weight of vehicles for reasons such as improving fuel efficiency, but attempts have been made to incorporate aluminum materials into power transmission parts to be mounted on transmissions.
アルミニウム素材の場合には、主にダイカスト工法による成形が一般的ではあるが、ダイカスト工法には気孔が発生してクラックを引き起こすという問題があり、金型から成形物を取り出すために、いわゆる「抜け勾配」を加えなければならないことから、金型から取り出した後に再加工が必要となって面倒が伴う。 In the case of an aluminum material, the die casting method is generally used for forming, but the die casting method has a problem that pores are generated to cause cracks. Since the “gradient” must be added, it is necessary to rework after taking out from the mold, which is troublesome.
本発明は、アルミニウム素材を変速機の回転伝達装置の素材として取り入れるときに、従来技術のダイカスト工法ではなく流動成形工法によって成形することにより、上述した従来技術の問題点を解決することを目的とする。 An object of the present invention is to solve the above-mentioned problems of the prior art by forming an aluminum material as a material for a rotation transmission device of a transmission by forming it by a fluid molding method instead of a conventional die casting method. To do.
本発明は、上下部の内側に歯形が提供される回転伝達装置の成形方法に関し、前記方法は、（１）中央に孔が形成されている円板形態の作業物を上下側に配置される第１金型に固定させる第１ステップと、（２）前記第１金型を回転しながら、第１金型に沿って第１中間形状部と第２中間形状部を流動成形によって成形する第２ステップと、（３）第１部分の内側歯形に相補的な第１歯形成形部が形成されている第２金型を、第２ステップで成形された第１中間形状部の内側に配置する第３ステップと、（４）前記第１中間形状部の外側でローラを加圧して流動成形して前記第２金型の第１歯形成形部に沿って歯形を成形しながら、第１部分として流動成形する第４ステップと、（５）前記第２部分の内側歯形に相補的な第２歯形成形部が形成されている第３金型を、第２ステップで成形された第２中間形状部の内側に配置する第５ステップと、（６）前記第２中間形状部の外側でローラを加圧して流動成形して前記第３金型の第２歯形成形部に沿って歯形を成形しながら、第２部分として流動成形する第６ステップとを含む。
前記第２ステップは、作業物の厚み部の一部を前記第１金型の上側の金型に沿って流動成形させる第２−１ステップと、作業物の厚み部の残りを前記第１金型の下側の金型に沿って流動成形させる第２−２ステップとを含むことができる。
The present invention relates to a method of forming a rotation transmission device in which a tooth profile is provided on the inner side of the upper and lower parts. In the method, (1) a disk-shaped work having a hole formed in the center is arranged on the upper and lower sides. A first step of fixing to the first mold; and (2) forming a first intermediate shape portion and a second intermediate shape portion by flow molding along the first mold while rotating the first mold. 2 steps, and (3) a second mold in which a first tooth forming portion complementary to the inner tooth shape of the first portion is formed is disposed inside the first intermediate shape portion formed in the second step. A third step, and (4) pressurizing a roller outside the first intermediate shape portion to form a tooth profile along the first tooth forming shape portion of the second mold, A fourth step of fluid molding; and (5) a second tooth forming profile complementary to the inner tooth profile of the second portion. A fifth step in which the third mold is placed inside the second intermediate shape portion formed in the second step; and (6) fluid molding by pressurizing the roller outside the second intermediate shape portion. And a sixth step of fluid forming as the second part while forming the tooth profile along the second tooth forming profile of the third mold.
The second step includes a step 2-1 in which a part of the thickness portion of the work piece is fluidly molded along the upper mold of the first mold, and the remaining thickness portion of the work piece is the first gold. 2-2 step of fluid forming along the lower mold of the mold.
前記第１ステップは、前記第１金型を前記孔と前記作業物の端周囲との間で作業物を固定させるステップであることが好ましい。
本発明の他の形態に係る方法は、（１）チューブ形態の作業物を、スリーブ成形部がサイドに提供される臼型の第４金型の外側に固定させて提供する第１ステップと、（２）前記チューブ形態の作業物の外側にローラを加圧し、前記第４金型を回転させながらスリーブを流動成形する第２ステップと、（３）第１部分の内側歯形に相補的な第１歯形成形部が形成されている第２金型を第１中間形状部の内側に配置する第３ステップと、（４）前記第１中間形状部の外側でローラを加圧して流動成形して前記第２金型の第１歯形成形部に沿って歯形を成形しながら、第１部分として成形する第４ステップと、（５）第２部分の内側歯形に相補的な第２歯形成形部が形成されている第３金型を第２中間形状部の内側に配置する第５ステップと、（６）前記第２中間形状部の外側でローラを加圧して流動成形して前記第３金型の第２歯形成形部に沿って歯形を成形しながら、第２部分として成形する第６ステップとを含む。
Preferably, the first step is a step of fixing the work piece between the hole and the periphery of the end of the work piece.
The method according to another aspect of the present invention includes: (1) a first step of providing a tube-shaped work piece by fixing the work piece in a tube shape to the outside of a fourth die of a mortar mold provided on the side; (2) a second step of pressurizing a roller to the outside of the work piece in the tube form and fluidly forming the sleeve while rotating the fourth mold; and (3) a second step complementary to the inner tooth profile of the first portion. A third step in which a second mold in which a one-tooth forming portion is formed is disposed inside the first intermediate shape portion; and (4) fluid molding by pressurizing a roller outside the first intermediate shape portion. A fourth step of forming a tooth profile as a first part while forming a tooth profile along the first tooth forming profile of the second mold; and (5) a second tooth forming profile complementary to the inner tooth profile of the second part. A fifth step of arranging the formed third mold inside the second intermediate shape portion; ) A sixth step of forming a second portion while forming a tooth profile along the second tooth forming shape portion of the third mold by pressurizing and fluidly forming a roller outside the second intermediate shape portion. Including.
本発明のさらに他の形態に係る方法は、（１）第１部分の内側歯形に相補的な第１歯形成形部が形成されている第１金型を臼形態の作業物の第１中間形状部の内側に配置する第１ステップと、（２）前記第１中間形状部の外側でローラを加圧して流動成形して前記第１金型の第１歯形成形部に沿って歯形を成形しながら、第１部分として成形する第２ステップと、（３）第２部分の内側歯形に相補的な第２歯形成形部が形成されている第２金型を前記臼形態の作業物の第２中間形状部の内側に配置する第３ステップと、（４）前記第２中間形状部の外側でローラを加圧して流動成形して前記第２金型の第２歯形成形部に沿って歯形を成形しながら、第２部分として成形する第４ステップとを含む。 The method according to still another aspect of the present invention includes: (1) a first intermediate shape of a work piece in the form of a mortar, wherein a first mold having a first tooth forming portion complementary to the inner tooth shape of the first portion is formed; A first step disposed inside the part, and (2) forming a tooth profile along the first tooth forming shape part of the first mold by pressurizing and fluidly forming a roller outside the first intermediate shape part. However, a second step of forming the first part as a first part, and (3) a second mold in which a second tooth forming part complementary to the inner tooth form of the second part is formed is a second part of the work having the die shape. A third step disposed inside the intermediate shape portion; and (4) pressurizing a roller on the outside of the second intermediate shape portion to perform flow molding to form a tooth profile along the second tooth forming shape portion of the second mold. And a fourth step of forming as the second part while forming.
本発明によると、ダイカスト工法を適用するときに伴う気孔発生の恐れがなく、流動成形過程において形成されるメタルフロー（ｍｅｔａｌ ｆｌｏｗ）の制御および加工硬化を利用して成形物の機械的特性を向上させることができ、軸対象の円板製品の多品種少ロット生産に有効的であり、流動成形による塑性変形が偏差応力によって誘発されるため、垂直応力を利用するスタンピング（ｓｔａｍｐｉｎｇ）ないし深絞り加工（ｄｅｅｐ ｄｒａｗｉｎｇ）工程に比べて塑性変形を効果的に誘発できる上に、加工力が相対的に小さくても良いことから、設備投資費と関連費用を低減させることができる効果がある。 According to the present invention, there is no risk of generation of pores when the die casting method is applied, and the mechanical properties of the molded product are improved by utilizing metal flow control and work hardening formed in the fluid molding process. It is effective for high-mix low-volume production of disc products for shafts, and plastic deformation due to fluid forming is induced by deviation stress, so stamping or deep drawing using vertical stress. Compared with the (deep drawing) step, plastic deformation can be effectively induced, and the processing force may be relatively small, so that there is an effect that the capital investment cost and the related cost can be reduced.
以下、添付の図面を参照しながら、本発明について詳しく説明する。
図１には、本発明に係る成形方法によって成形しようとする最終成形物の断面図が示されている。回転伝達装置５には、第１部分１と、第２部分２と、第１部分１および第２部分２の間に提供されるサイド部分３とがある。
第１部分１の内側には、第１側のギアと歯合する第１歯形１２が提供され、第２部分２の内側には、第２側のギアと歯合する第２歯形２２が提供される。本明細書において、第１部分１と第２部分２は回転伝達装置の両側を意味するが、歯形が内側に成形される前と成形された後すべてを指すものとして言及する。図１において、歯形は、第１部分１と第２部分２の高さ全体に渡って形成されるものと示されているが、その高さは設計の仕様に応じて自由に変更されてもよい。
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows a sectional view of a final molded product to be molded by the molding method according to the present invention. The rotation transmission device 5 includes a first part 1, a second part 2, and a side part 3 provided between the first part 1 and the second part 2.
A first tooth profile 12 that meshes with the gear on the first side is provided inside the first portion 1, and a second tooth profile 22 that meshes with the gear on the second side is provided inside the second portion 2. Is done. In this specification, the 1st part 1 and the 2nd part 2 mean both sides of a rotation transmission device, but are referred to as referring to all before and after the tooth profile is molded inside. In FIG. 1, the tooth profile is shown to be formed over the entire height of the first part 1 and the second part 2, but the height can be freely changed according to the design specifications. Good.
サイド部分３の内側にはスリーブ４が提供される。
本発明に係る成形方法が始まる最初の作業物の形態は、中央に孔１５０が形成されている円板形態の作業物１００と、図３に示されているチューブ形態の作業物３００、そして図１に示されている臼形態の作業物であるが、第１部分１と第２部分２の内側に歯形が成形されていない作業物であってもよい。図１に示されている臼形態の作業物の場合は、鍛造工程によって加工して提供され、本発明によっては第１部分１と第２部分２の内側に歯形が成形される。
図２には、円板形態の作業物１００を本発明に係る方法によって成形する過程が示されている。
A sleeve 4 is provided inside the side portion 3.
The first work form in which the forming method according to the present invention is started includes a work piece 100 in the form of a disk having a hole 150 formed in the center, a work piece 300 in the form of a tube shown in FIG. 1 may be a workpiece in which the tooth profile is not formed inside the first portion 1 and the second portion 2. In the case of the work in the form of a mortar shown in FIG. 1, it is provided by being processed by a forging process, and according to the present invention, a tooth profile is formed inside the first part 1 and the second part 2.
FIG. 2 shows a process of forming a disk-shaped work 100 by the method according to the present invention.
図２（ａ）に示すように、上側の第１金型１０−１が孔１５０と端周囲との間に作業物を固定した状態で高速回転させながらローラ２００を矢印の方向に加圧することにより、第１厚み部１２０を上側の第１金型１０−１に沿うように流動成形する。実際には上側の第１金型１０−１と下側の第１金型１０−２が共に円板形態の作業物１００を上下で固定しているが、説明の便宜のために、上側の金型と下側の金型とを分離して説明する。第１厚み部１２０が上側の第１金型１０−１に沿って流動成形されると、第１部分１の最終形状となる前の中間形状として成形される。本明細書において、「第１中間形状部」または「第２中間形状部」とは、図１に示す最終成形物の第１部分１と第２部分２であって、最終成形される前の中間段階の形状部を意味する。第１中間形状部と第２中間形状部は、後述する流動成形によって内側に歯形が提供される第１部分１と第２部分２として最終成形される。 As shown in FIG. 2 (a), the upper first mold 10-1 presses the roller 200 in the direction of the arrow while rotating at high speed with the work piece fixed between the hole 150 and the periphery of the end. Thus, the first thickness portion 120 is fluidly molded along the upper first mold 10-1. Actually, the upper first mold 10-1 and the lower first mold 10-2 both fix the disk-shaped work piece 100 up and down, but for the convenience of explanation, The mold and the lower mold will be described separately. When the first thickness portion 120 is fluidly molded along the upper first mold 10-1, it is molded as an intermediate shape before becoming the final shape of the first portion 1. In this specification, the “first intermediate shape portion” or the “second intermediate shape portion” means the first portion 1 and the second portion 2 of the final molded product shown in FIG. Means an intermediate stage shape. The first intermediate shape portion and the second intermediate shape portion are finally formed as a first portion 1 and a second portion 2 in which tooth shapes are provided on the inside by fluid forming described later.
図２（ｂ）に示すように第１中間形状部１’が成形されると、図２（ｃ）と図２（ｄ）に示すように、下側の第１金型１０−２に沿ってローラ２００が第２厚み部１４０を加圧しながら流動成形して第２中間形状部２’を成形する。
図２（ｅ）には、第２中間形状部２’を流動成形して第２部分２として成形する過程が、図２（ｆ）には、第１中間形状部１’を流動成形して第１部分１として成形する過程が示されている。この順序は変わってもよい。
When the first intermediate shape portion 1 ′ is formed as shown in FIG. 2 (b), as shown in FIGS. 2 (c) and 2 (d), along the lower first mold 10-2. The roller 200 is fluidly molded while pressurizing the second thickness portion 140 to form the second intermediate shape portion 2 ′.
FIG. 2 (e) shows a process in which the second intermediate shape portion 2 ′ is fluid molded to form the second portion 2. FIG. 2 (f) shows a process in which the first intermediate shape portion 1 ′ is fluid molded. The process of forming as the first part 1 is shown. This order may vary.
図２（ｅ）に示すように、第２中間形状部２’の内側には、第２部分２の内側歯形に相補的な歯形成形部２５が外側に提供されている第３金型２０が配置される。そして、第２中間形状部２’の外側でローラ２００を加圧すると、第２中間形状部２’は第３金型２０に沿って流動成形され、内側に第２歯形２２が成形される。ローラ２００の加圧方向は、サイド部から下側に向かうことが好ましい。流動成形によって第１部分１と第２部分２が延伸成形され、その高さが増大する。 As shown in FIG. 2 (e), a third mold 20 is provided on the inner side of the second intermediate shape portion 2 ′. The third mold 20 is provided with a tooth forming portion 25 complementary to the inner tooth shape of the second portion 2 on the outside. Be placed. When the roller 200 is pressed outside the second intermediate shape portion 2 ′, the second intermediate shape portion 2 ′ is flow-formed along the third mold 20, and the second tooth shape 22 is formed inside. The pressure direction of the roller 200 is preferably from the side part to the lower side. The first part 1 and the second part 2 are stretch-molded by fluid molding, and the height increases.
次に、図２（ｆ）に示すように、第１中間形状部１’の内側には、第１部分１の内側歯形に相補的な歯形成形部３５が外側に提供されている第２金型３０が配置される。そして、第１中間形状部１’の外側でローラ２００を加圧すると、第１中間形状部１’は第２金型３０に沿って流動成形され、内側に第１歯形１２が成形される。ローラ２００の加圧方向は、サイド部から上側に向かうことが好ましい。 Next, as shown in FIG. 2 (f), the second gold is provided on the inner side of the first intermediate shape portion 1 ′ with a tooth forming shape portion 35 complementary to the inner tooth shape of the first portion 1 on the outside. A mold 30 is placed. When the roller 200 is pressed outside the first intermediate shape portion 1 ′, the first intermediate shape portion 1 ′ is fluidly formed along the second mold 30, and the first tooth profile 12 is formed inside. The pressing direction of the roller 200 is preferably directed upward from the side portion.
図３には、チューブ形態の作業物３００を１次成形する金型との関係が示されている。チューブ形態の作業物３００は、臼形態の第４金型４０の外側に配置されて流動成形される。第４金型４０には、サイド部分にスリーブ成形部４５が提供される。第４金型４０に固定された状態で高速回転しながらローラ２００を作業物３００の外側で加圧すると、チューブ形態の作業物３００は、スリーブが内側に提供された臼形態の１次中間形状部として加工される。この１次中間形状部が図２（ｅ）および図２（ｆ）に示すような流動成形過程を経ることにより、図１に示すような最終成形物を流動成形することができる。 FIG. 3 shows the relationship with the mold for primary forming the tube-shaped work 300. The tube-shaped work 300 is placed on the outside of the mortar-shaped fourth mold 40 and fluidly molded. The fourth mold 40 is provided with a sleeve forming portion 45 on the side portion. When the roller 200 is pressed outside the work piece 300 while rotating at a high speed while being fixed to the fourth mold 40, the tube-like work piece 300 has a mortar-shaped primary intermediate shape with a sleeve provided inside. Processed as part. The primary intermediate shape portion undergoes a fluid molding process as shown in FIGS. 2 (e) and 2 (f), whereby a final molded product as shown in FIG. 1 can be fluid molded.
図４に示すように、鍛造工程などによって臼形態の１次中間形状部を作業物４００にすることにより、図１に示すような動力伝達部品を本発明に係る方法によって成形することができる。この臼形態の１次中間形状部も、図２（ｅ）および図２（ｆ）に示す過程を経ながら、図１に示すような動力伝達部品として成形することができる。 As shown in FIG. 4, a power transmission component as shown in FIG. 1 can be formed by the method according to the present invention by using a mortar-shaped primary intermediate shape portion as a work 400 by a forging process or the like. This mortar-shaped primary intermediate shape portion can also be formed as a power transmission component as shown in FIG. 1 through the process shown in FIGS. 2 (e) and 2 (f).
以上、添付の図面を参照しながら本発明について説明したが、本発明の権利範囲は後述する特許請求の範囲によって決まり、上述した実施例および／または図面に制限されるものと解釈されてはならない。さらに、特許請求の範囲に記載された発明の当業者にとって自明な改良、変更、および修正も、本発明の権利範囲に含まれるという点が明白に理解されなければならない。 Although the present invention has been described above with reference to the accompanying drawings, the scope of the present invention is determined by the scope of the claims to be described later and should not be construed as being limited to the above-described embodiments and / or drawings. . Further, it should be clearly understood that improvements, changes, and modifications obvious to those skilled in the art of the claimed invention are also included in the scope of the present invention.
１：第１部分
２：第２部分
３：サイド部分
４：スリーブ
１０−１、１０−２：第１金型
１２：第１歯形
２０：第３金型
２２：第２歯形
３０：第２金型
４０：第４金型
1: First part 2: Second part 3: Side part 4: Sleeve 10-1, 10-2: First mold 12: First tooth profile 20: Third mold 22: Second tooth profile 30: Second gold Mold 40: Fourth mold
Claims (4)
中央に孔が形成されている円板形態の作業物を上下側に配置される第１金型に固定させる第１ステップと、
前記第１金型を回転しながら、第１金型に沿って第１中間形状部と第２中間形状部を流動成形によって成形する第２ステップと、
第１部分の内側歯形に相補的な第１歯形成形部が形成されている第２金型を、第２ステップで成形された第１中間形状部の内側に配置する第３ステップと、
前記第１中間形状部の外側でローラを加圧して流動成形して前記第２金型の第１歯形成形部に沿って歯形を成形しながら、第１部分として流動成形する第４ステップと、
前記第２部分の内側歯形に相補的な第２歯形成形部が形成されている第３金型を、第２ステップで成形された第２中間形状部の内側に配置する第５ステップと、
前記第２中間形状部の外側でローラを加圧して流動成形して前記第３金型の第２歯形成形部に沿って歯形を成形しながら、第２部分として流動成形する第６ステップとを含む、 回転伝達装置の成形方法。 A method of forming a rotation transmission device in which a tooth profile is provided inside the upper and lower parts,
A first step of fixing a disk-shaped work having a hole in the center to a first mold disposed on the upper and lower sides;
A second step of forming the first intermediate shape portion and the second intermediate shape portion by flow molding along the first die while rotating the first die;
A third step in which a second mold in which a first tooth forming shape portion complementary to the inner tooth shape of the first portion is formed is disposed inside the first intermediate shape portion formed in the second step;
A fourth step of fluid forming as a first portion while forming a tooth profile along the first tooth forming shape portion of the second mold by pressurizing and fluidly forming a roller outside the first intermediate shape portion;
A fifth step in which a third mold in which a second tooth forming shape portion complementary to the inner tooth shape of the second portion is formed is disposed inside the second intermediate shape portion formed in the second step;
A sixth step of fluid forming as a second part while forming a tooth profile along a second tooth forming shape portion of the third mold by pressurizing a roller on the outside of the second intermediate shape portion and fluid forming; A method for forming a rotation transmission device.
請求項１に記載の回転伝達装置の成形方法。 The second step includes a step 2-1 in which a part of the thickness portion of the work piece is fluidly molded along the upper mold of the first mold, and the remaining thickness portion of the work piece is the first gold. 2-2 step of fluid forming along the lower mold of the mold,
The method for forming a rotation transmission device according to claim 1.
チューブ形態の作業物を、スリーブ成形部がサイドに提供される臼型の第４金型の外側に固定させて提供する第１ステップと、
前記チューブ形態の作業物の外側にローラを加圧し、前記第４金型を回転させながらスリーブを流動成形する第２ステップと、
第１部分の内側歯形に相補的な第１歯形成形部が形成されている第２金型を第１中間形状部の内側に配置する第３ステップと、
前記第１中間形状部の外側でローラを加圧して流動成形して前記第２金型の第１歯形成形部に沿って歯形を成形しながら、第１部分として成形する第４ステップと、
第２部分の内側歯形に相補的な第２歯形成形部が形成されている第３金型を第２中間形状部の内側に配置する第５ステップと、
前記第２中間形状部の外側でローラを加圧して流動成形して前記第３金型の第２歯形成形部に沿って歯形を成形しながら、第２部分として成形する第６ステップとを含む、
回転伝達装置の成形方法。 A method of forming a rotation transmission device in which a tooth profile is provided inside the upper and lower parts,
A first step of providing a work piece in a tube form fixed to the outside of a fourth die of a mortar mold provided with a sleeve forming part on the side;
A second step of fluidly molding the sleeve while rotating the fourth mold by pressing a roller outside the tube-shaped work;
A third step in which a second mold in which a first tooth forming portion complementary to the inner tooth shape of the first portion is formed is disposed inside the first intermediate shape portion;
A fourth step of forming the first portion while forming a tooth profile along the first tooth forming shape portion of the second mold by pressurizing a roller on the outside of the first intermediate shape portion and fluid forming;
A fifth step in which a third mold in which a second tooth forming shape portion complementary to the inner tooth shape of the second portion is formed is disposed inside the second intermediate shape portion;
A sixth step of forming a second portion while forming a tooth profile along a second tooth forming shape portion of the third mold by pressurizing a roller on the outside of the second intermediate shape portion and performing flow forming. ,
A method of forming a rotation transmission device.
第１部分の内側歯形に相補的な第１歯形成形部が形成されている第１金型を臼形態の作業物の第１中間形状部の内側に配置する第１ステップと、
前記第１中間形状部の外側でローラを加圧して流動成形して前記第１金型の第１歯形成形部に沿って歯形を成形しながら、第１部分として成形する第２ステップと、
第２部分の内側歯形に相補的な第２歯形成形部が形成されている第２金型を前記臼形態の作業物の第２中間形状部の内側に配置する第３ステップと、
前記第２中間形状部の外側でローラを加圧して流動成形して前記第２金型の第２歯形成形部に沿って歯形を成形しながら、第２部分として成形する第４ステップとを含む、
回転伝達装置の成形方法。 A method of forming a rotation transmission device in which a tooth profile is provided inside the upper and lower parts,
A first step of disposing a first mold in which a first tooth forming shape portion complementary to an inner tooth shape of the first portion is formed inside a first intermediate shape portion of a mortar-shaped work;
A second step of forming a first portion while forming a tooth profile along a first tooth forming shape portion of the first mold by pressurizing a roller on the outside of the first intermediate shape portion and forming a tooth profile along the first tooth forming shape portion of the first mold;
A third step of disposing a second mold in which a second tooth forming shape portion complementary to the inner tooth shape of the second portion is formed inside the second intermediate shape portion of the mortar-shaped work;
A fourth step of forming a second portion while forming a tooth profile along a second tooth forming shape portion of the second mold by pressurizing a roller on the outside of the second intermediate shape portion and fluidly forming it. ,
A method of forming a rotation transmission device.
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