JP5704966B2 - Equipment for manufacturing pulley shaft with parking gear - Google Patents

Equipment for manufacturing pulley shaft with parking gear Download PDF

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JP5704966B2
JP5704966B2 JP2011044178A JP2011044178A JP5704966B2 JP 5704966 B2 JP5704966 B2 JP 5704966B2 JP 2011044178 A JP2011044178 A JP 2011044178A JP 2011044178 A JP2011044178 A JP 2011044178A JP 5704966 B2 JP5704966 B2 JP 5704966B2
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parking gear
cold forging
hot
forged product
pulley
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JP2012179634A (en
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真吾 長谷田
真吾 長谷田
陽介 山崎
陽介 山崎
利享 田中
利享 田中
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Honda Motor Co Ltd
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Description

本発明は、パーキングギヤ付きプーリシャフトの製造技術に関する。   The present invention relates to a technique for manufacturing a pulley shaft with a parking gear.

車両にはパーキングブレーキが装備されるが、このパーキングブレーキの構成要素の一つであるパーキングギヤを、ＣＶＴ（無段変速機）のプーリシャフトに付設することが知られている（例えば、特許文献１（図１）参照。）。   A vehicle is equipped with a parking brake, and it is known that a parking gear, which is one of the components of the parking brake, is attached to a pulley shaft of a CVT (continuously variable transmission) (for example, Patent Documents). 1 (FIG. 1).)

特許文献１を次図に基づいて説明する。
図１０は従来のパーキングギヤ付きプーリシャフトの製造工程を説明する図であり、（ａ）に示すように、円柱素材１０１を準備し、（ｂ）に示すように熱間鍛造によりシャフト部１０２と、プーリ部１０３と、パーキングギヤ部を予定する円板部１０４とからなる熱間鍛造品１０５を造形する。 Patent document 1 is demonstrated based on the following figure.
FIG. 10 is a diagram for explaining a manufacturing process of a conventional pulley shaft with a parking gear. As shown in FIG. 10A, a cylindrical material 101 is prepared, and as shown in FIG. Then, a hot forged product 105 composed of the pulley portion 103 and the disc portion 104 that is planned to be the parking gear portion is formed.

熱間鍛造品１０５を、冷間鍛造機へ移し、（ｃ）に示すように、パーキングギヤ部１０６を造形する（第１冷間鍛造工程）。
次に、パーキングギヤ部１０６を冷間仕上げすることで、（ｄ）に示すように面取り１０７を施す（第２冷間鍛造工程）。以上により、パーキングギヤ付きプーリシャフト１０８が完成する。 The hot forged product 105 is moved to a cold forging machine, and the parking gear portion 106 is formed as shown in (c) (first cold forging step).
Next, the parking gear part 106 is cold-finished, so that a chamfer 107 is applied as shown in (d) (second cold forging step). Thus, the pulley shaft 108 with a parking gear is completed.

また、パーキングギヤ部を機械加工で仕上げることも行われている（例えば、特許文献２（図８〜１０）参照。）。
図１１は従来のパーキングロック付きカウンタドリブンの製造工程を説明する図であり、（ａ）に示すような形状の熱間鍛造品１１１を、熱間鍛造機により造形する。次に、（ｂ）に示すように冷間鍛造機により、カウンタドリブン部１１２を造形することで冷間鍛造品１１３を得る。
そして、（ｃ）に示すように機械加工により、パーキングロック部１１４を切り出す。 Moreover, the parking gear part is also finished by machining (see, for example, Patent Document 2 (FIGS. 8 to 10)).
FIG. 11 is a diagram for explaining a manufacturing process of a conventional counter driven with a parking lock, and a hot forging product 111 having a shape as shown in FIG. Next, as shown in (b), the cold forging product 113 is obtained by modeling the counter driven part 112 with a cold forging machine.
And the parking lock part 114 is cut out by machining as shown in (c).

特許文献１の技術では、第１冷間鍛造工程でパーキングギヤ部１０６を造形するため、仕上げに第２冷間鍛造工程が必須となる。そのため、特許文献１の技術は、熱間鍛造工程、第１冷間鍛造工程、第２冷間鍛造工程をこの順に実施する必要がある。   In the technique of Patent Document 1, since the parking gear portion 106 is formed in the first cold forging process, the second cold forging process is essential for finishing. Therefore, in the technique of Patent Document 1, it is necessary to perform the hot forging process, the first cold forging process, and the second cold forging process in this order.

特許文献２の技術では、冷間鍛造により、パーキングロック部１１４を造らないため、歯切りに機械加工が必須となる。そのため、特許文献２の技術は、熱間鍛造工程、冷間鍛造工程、機械加工工程をこの順に実施する必要がある。   In the technique of Patent Document 2, since the parking lock portion 114 is not formed by cold forging, machining is essential for gear cutting. Therefore, the technique of Patent Document 2 needs to perform a hot forging process, a cold forging process, and a machining process in this order.

特許文献２の技術は、機械加工工程のために工作機を準備する必要があり、工作機での歯切りは、歯を１枚ずつ切り出すため、加工時間が長くなる。生産性を維持するには、高性能の工作機を準備するか、複数台の工作機を準備する必要があり、設備費用が嵩む。   In the technique of Patent Document 2, it is necessary to prepare a machine tool for the machining process, and gear cutting with the machine tool cuts teeth one by one, so that the processing time becomes long. In order to maintain productivity, it is necessary to prepare a high-performance machine tool or to prepare a plurality of machine tools, which increases equipment costs.

その点、特許文献１の技術は、全て鍛造であるため、１ショットで歯全数を造形することができ、生産性の点では有利である。
しかし、熱間鍛造工程のための金型、第１冷間鍛造工程のための金型、第２冷間鍛造工程のための金型を各々準備する必要があり、金型費用が嵩む。 In that respect, since the technique of Patent Document 1 is all forging, all the teeth can be formed in one shot, which is advantageous in terms of productivity.
However, it is necessary to prepare a mold for the hot forging process, a mold for the first cold forging process, and a mold for the second cold forging process, which increases the mold cost.

そこで、生産性を良好に保ちつつ金型費用を下げることができるパーキングギヤ付きプーリシャフトの製造技術が求められる。   Therefore, there is a need for a manufacturing technique for a pulley shaft with a parking gear that can reduce mold costs while maintaining good productivity.

特許第２９３９２２６号公報Japanese Patent No. 2939226 特許第２５５５２９０号公報Japanese Patent No. 2555290

本発明は、生産性を良好に保ちつつ金型費用を下げることができるパーキングギヤ付きプーリシャフトの製造技術を提供することを課題とする。   It is an object of the present invention to provide a manufacturing technique of a pulley shaft with a parking gear that can reduce mold costs while maintaining good productivity.

本発明者らは、従来、冷間鍛造又は機械加工でパーキングギヤ部を造形又は切り出していたことに注目し、パーキングギヤ部の粗（荒）成形までを熱間鍛造で造形すれば、冷間鍛造で仕上げに専念させることができ、冷間鍛造の工程数を減らすことができることを知見した。   The present inventors pay attention to the fact that the parking gear portion has been shaped or cut out by cold forging or machining in the past, and if it is shaped by hot forging until the rough (rough) forming of the parking gear portion, It has been found that forging can be dedicated to finishing and the number of cold forging processes can be reduced.

ただし、冷間鍛造又はそれ以降でギヤ部を形成するような従来の技術では、熱間鍛造品の回転方向位置（方位）は問題にならないが、パーキングギヤ部の粗（荒）成形までを熱間鍛造で造形する場合は熱間鍛造品を冷間鍛造機にセットすることが問題となる。そこで、本発明では熱間鍛造品を、回転位置決め機構で位置決めした後に冷間鍛造機にセットするようにした。   However, in the conventional technology in which the gear part is formed by cold forging or later, the rotational direction position (orientation) of the hot forged product is not a problem, but the process until the rough (rough) forming of the parking gear part is heated. When forming by cold forging, it becomes a problem to set a hot forged product in a cold forging machine. Therefore, in the present invention, the hot forged product is set in the cold forging machine after being positioned by the rotary positioning mechanism.

請求項１に係る発明は、プーリシャフトにパーキングギヤを一体形成してなるパーキングギヤ付きプーリシャフトの製造装置であって、
棒状素材を熱間鍛造することで、シャフト部にプーリ部を造形し且つ前記プーリ部にパーキングギヤ部を造形する熱間鍛造機と、
前記パーキングギヤ部を対象に回転方向の位置を決定する回転位置決め機構と、
回転方向の位置が決められた前記熱間鍛造品に冷間鍛造を施すことで前記パーキングギヤ部を仕上げる冷間鍛造機と、
前記回転位置決め機構から前記冷間鍛造機まで前記回転方向の位置が決められた熱間鍛造品を運搬するローダと、からなり、
前記回転位置決め機構は、前記熱間鍛造品を支える回転体と、この回転体を鉛直軸回りに回転する駆動手段とを備え、
前記ローダは、前記回転位置決め機構の中心と前記冷間鍛造機の中心とを通る線に平行に敷設されたレールと、このレールに載っているスライダと、このスライダを前記レールに沿って移動する移動シリンダと、前記スライダに載っているアームと、このアームの先端に設けられ前記位置決めされた前記熱間鍛造品を挟むフィンガとからなり、前記熱間鍛造品を回転させることなく平行移動することを特徴とする。 The invention according to claim 1 is an apparatus for manufacturing a pulley shaft with a parking gear formed by integrally forming a parking gear on a pulley shaft,
By hot forging a rod-shaped material, a hot forging machine that forms a pulley portion on the shaft portion and a parking gear portion on the pulley portion;
A rotation positioning mechanism for determining a position in a rotation direction with respect to the parking gear portion;
A cold forging machine that finishes the parking gear portion by performing cold forging on the hot forged product in which the position in the rotational direction is determined;
A loader for transporting a hot forged product whose position in the rotational direction is determined from the rotational positioning mechanism to the cold forging machine ,
The rotational positioning mechanism includes a rotating body that supports the hot forged product, and a driving unit that rotates the rotating body around a vertical axis.
The loader has a rail laid parallel to a line passing through the center of the rotary positioning mechanism and the center of the cold forging machine, a slider mounted on the rail, and moves the slider along the rail. It consists of a moving cylinder, an arm mounted on the slider, and a finger that is provided at the tip of the arm and sandwiches the positioned hot forged product, and moves in parallel without rotating the hot forged product. It is characterized by.

請求項１に係る発明では、回転位置決め機構とローダとが必要になるが、回転位置決め機構やローダは、冷間鍛造機や冷間鍛造用金型に比較して格段に安価である。したがって、安価なパーキングギヤ付きプーリシャフトの製造装置が提供される。
ローダは、回転位置決め機構から冷間鍛造機まで熱間鍛造品を不用意に回転させることなく慎重に運搬する。 The invention according to claim 1 requires a rotational positioning mechanism and a loader. However, the rotational positioning mechanism and the loader are much cheaper than a cold forging machine or a cold forging die. Accordingly, an inexpensive pulley gear manufacturing apparatus with a parking gear is provided.
The loader carefully transports the hot forged product from the rotary positioning mechanism to the cold forging machine without inadvertent rotation.

パーキングギヤ付きプーリシャフトを内蔵する無段変速機の原理図である。It is a principle diagram of a continuously variable transmission incorporating a pulley shaft with a parking gear. パーキングギヤ付きプーリシャフトの断面図である。It is sectional drawing of a pulley shaft with a parking gear. 本発明に係るパーキングギヤ付きプーリシャフトの製造装置のレイアウトである。It is a layout of the manufacturing apparatus of the pulley shaft with a parking gear which concerns on this invention. 本発明方法で造形した熱間鍛造品の側面図である。It is a side view of the hot forging product modeled by the method of the present invention. 図４の５矢視図である。FIG. 5 is a view taken in the direction of arrow 5 in FIG. 4. 回転位置決め機構の正面図である。It is a front view of a rotation positioning mechanism. 図６の７−７線断面図である。FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 6. ローダによる運搬工程及び冷間鍛造工程を説明する図である。It is a figure explaining the conveyance process and cold forging process by a loader. 本発明に係るパーキングギヤ付きプーリシャフトの製造フロー図である。It is a manufacturing flow figure of the pulley shaft with a parking gear concerning the present invention. 従来のパーキングギヤ付きプーリシャフトの製造工程を説明する図である。It is a figure explaining the manufacturing process of the conventional pulley shaft with a parking gear. 従来のパーキングロック付きカウンタドリブンの製造工程を説明する図である。It is a figure explaining the manufacturing process of the conventional counter driven with a parking lock.

本発明の実施の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。   Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

本発明の実施例を図面に基づいて説明する。
図１に示すように、無段減速機（ＣＶＴ）１０は、駆動側プーリ１１と、従動側プーリ１２と、これらのプーリ１１、１２に巻回したベルト１３とからなる。 Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the continuously variable reduction gear (CVT) 10 includes a driving pulley 11, a driven pulley 12, and a belt 13 wound around these pulleys 11 and 12.

駆動側プーリ１１は、パーキングギヤ付きプーリシャフト２０と、このパーキングギヤ付きプーリシャフト２０のシャフト部２１に軸方向移動可能に嵌められている可動プーリ１４とからなる。
従動側プーリ１２は、プーリシャフト１５とこのプーリシャフト１５に軸方向移動可能に嵌められている可動プーリ１６とからなる。 The driving pulley 11 includes a pulley shaft 20 with a parking gear, and a movable pulley 14 fitted to a shaft portion 21 of the pulley shaft 20 with a parking gear so as to be movable in the axial direction.
The driven pulley 12 includes a pulley shaft 15 and a movable pulley 16 fitted to the pulley shaft 15 so as to be movable in the axial direction.

図２に示されるように、パーキングギヤ付きプーリシャフト２０は、シャフト部２１と、このシャフト部２１から径外方へ膨出形成されたプーリ部２２と、このプーリ部２２に一体形成されるパーキングギヤ２３とからなる。なお、パーキングギヤ２３は、パーキングギヤ部を冷間鍛造工程で仕上げた後のギヤを指す。
このような構造のパーキングギヤ付きプーリシャフト２０を製造する製造装置の好適な例を次に説明する。 As shown in FIG. 2, the pulley shaft 20 with a parking gear includes a shaft portion 21, a pulley portion 22 that is bulged outward from the shaft portion 21, and a parking lot that is integrally formed with the pulley portion 22. And a gear 23. The parking gear 23 indicates a gear after the parking gear portion is finished in the cold forging process.
A preferred example of a manufacturing apparatus for manufacturing the pulley shaft 20 with a parking gear having such a structure will be described below.

図３に示すように、パーキングギヤ付きプーリシャフトの製造装置３０は、棒状素材を熱間鍛造することで、シャフト部にプーリ部を造形し且つプーリ部にパーキングギヤ部を造形する熱間鍛造機３１と、パーキングギヤ部を対象に回転方向の位置を決定する回転位置決め機構４０と、熱間鍛造機３１から回転位置決め機構４０まで熱間鍛造品Ｗ１を運搬する運搬手段３２と、回転方向の位置が決められた熱間鍛造品Ｗ２に冷間鍛造を施すことでパーキングギヤ部を仕上げる冷間鍛造機７０と、回転位置決め機構４０から冷間鍛造機７０まで熱間鍛造品Ｗ２を不用意に回転させることなく慎重に運搬するローダ６０とからなる。   As shown in FIG. 3, a pulley shaft manufacturing apparatus 30 with a parking gear is a hot forging machine that forms a pulley portion on a shaft portion and forms a parking gear portion on a pulley portion by hot forging a rod-shaped material. 31, a rotation positioning mechanism 40 that determines a position in the rotation direction with respect to the parking gear portion, a transport means 32 that conveys the hot forging product W <b> 1 from the hot forging machine 31 to the rotation positioning mechanism 40, and a position in the rotation direction The cold forging machine 70 finishes the parking gear section by performing cold forging on the hot forging product W2 determined, and the hot forging product W2 rotates carelessly from the rotary positioning mechanism 40 to the cold forging machine 70. And a loader 60 that is carefully transported without causing any damage.

熱間鍛造機３１は、周知の装置であるため構造の説明は省略し、得られる熱間鍛造品Ｗ１の形状を説明する。
図４に示すように、熱間鍛造品Ｗ１は、シャフト部２１と、このシャフト部２１から径外方へ膨出形成されたプーリ部２２と、このプーリ部２２に一体形成されるパーキングギヤ部２５とからなる。 Since the hot forging machine 31 is a well-known apparatus, description of a structure is abbreviate | omitted and the shape of the hot forging goods W1 obtained is demonstrated.
As shown in FIG. 4, the hot forged product W <b> 1 includes a shaft portion 21, a pulley portion 22 formed to bulge outward from the shaft portion 21, and a parking gear portion integrally formed with the pulley portion 22. 25.

図５に示すように、パーキングギヤ部２５は、幅広の歯２６と、歯２６と歯２６の間に形成された狭い歯底２７とからなる。
このような形状のパーキングギヤ部２５をも、熱間鍛造で造形したことを特徴とする。 As shown in FIG. 5, the parking gear portion 25 includes a wide tooth 26 and a narrow tooth bottom 27 formed between the tooth 26 and the tooth 26.
The parking gear portion 25 having such a shape is also formed by hot forging.

図３において、熱間鍛造機３１からロボットなどの運搬手段３２により、熱間鍛造品Ｗ１をピックアップし、この熱間鍛造品Ｗ１を回転位置決め装置４０へ載せる。このときには熱間鍛造品Ｗ１の回転方向位置（方位）は、問題にしない。   In FIG. 3, the hot forging product W <b> 1 is picked up from the hot forging machine 31 by the transport means 32 such as a robot, and this hot forging product W <b> 1 is placed on the rotary positioning device 40. At this time, the rotational direction position (azimuth) of the hot forged product W1 does not matter.

図６に示すように、回転位置決め装置４０は、テーブル４１と、このテーブル４１に軸受４２、４３を介して鉛直軸回りに回転可能に支持され上部に熱間鍛造品Ｗ１を収納する穴４４が設けられている回転体４５と、この回転体４５を回転させるモータ等の駆動手段４６と、テーブル４１から延びるブラケット４７に取付けられるシリンダ手段４８と、このシリンダ手段４８のピストンロッド４９から延びるロッド５０と、このロッド５０に軸方向移動可能に取付けられる矢形部材５１と、この矢形部材５１をパーキングギヤ部２５へ付勢する弾性部材５２とからなる。弾性部材５２は圧縮コイルばねが好適である。   As shown in FIG. 6, the rotary positioning device 40 has a table 41 and a hole 44 that is supported by the table 41 so as to be rotatable about a vertical axis via bearings 42 and 43 and accommodates a hot forged product W <b> 1 at the top. A rotating body 45 provided, driving means 46 such as a motor for rotating the rotating body 45, cylinder means 48 attached to a bracket 47 extending from the table 41, and a rod 50 extending from a piston rod 49 of the cylinder means 48 And an arrow-shaped member 51 that is attached to the rod 50 so as to be movable in the axial direction, and an elastic member 52 that urges the arrow-shaped member 51 toward the parking gear portion 25. The elastic member 52 is preferably a compression coil spring.

矢形部材５１は大規模にはシリンダ手段４８で移動され、小規模にはロッド５０に沿って移動する。   The arrow-shaped member 51 is moved by the cylinder means 48 on a large scale, and moves along the rod 50 on a small scale.

回転位置決め装置４０の作用を図７で説明する。
（ａ）に示すように、熱間鍛造品Ｗ１は回転方向位置（方位）を決めないで回転体（図６、符号４５）にセットされる。シリンダ手段（図６、符号４８）を伸動させると、高い確率で矢形部材５１の先端が歯２６に当たる。次に、熱間鍛造品Ｗ１をゆっくり回す。 The operation of the rotary positioning device 40 will be described with reference to FIG.
As shown to (a), the hot forging W1 is set to a rotary body (FIG. 6, code | symbol 45), without determining a rotation direction position (azimuth | direction). When the cylinder means (FIG. 6, reference numeral 48) is extended, the tip of the arrow-shaped member 51 hits the tooth 26 with high probability. Next, the hot forged product W1 is slowly rotated.

すると、（ｂ）に示すように、矢形部材５１の先端が歯底２７へ進入し、以降の回転を制限する。この時点で駆動手段（図６、符号４６）を停止させる。結果、回転方向の位置が決められた熱間鍛造品Ｗ２が得られる。   Then, as shown to (b), the front-end | tip of the arrow-shaped member 51 approachs the tooth bottom 27, and restrict | limits subsequent rotation. At this time, the driving means (FIG. 6, reference numeral 46) is stopped. As a result, a hot forged product W2 whose position in the rotational direction is determined is obtained.

図３において、回転方向の位置が決められた熱間鍛造品Ｗ２を、ローダ６０にて冷間鍛造機７０まで運搬する。ローダ６０は、例えば床上に敷設したレール６１と、このレール６１上を移動するスライダ６２と、このスライダ６２を移動させる移動シリンダ６３と、スライダ６２に昇降自在に保持される昇降部材６４と、この昇降部材６４を上下させる昇降シリンダ６５と、昇降部材６４から水平に延びるアーム６６と、このアーム６６の先端に設けられるフィンガ６７、６７とからなる。   In FIG. 3, the hot forged product W <b> 2 whose position in the rotational direction is determined is transported to the cold forging machine 70 by the loader 60. The loader 60 includes, for example, a rail 61 laid on the floor, a slider 62 that moves on the rail 61, a moving cylinder 63 that moves the slider 62, a lifting member 64 that is held up and down by the slider 62, A lifting cylinder 65 that moves the lifting member 64 up and down, an arm 66 that extends horizontally from the lifting member 64, and fingers 67 and 67 provided at the tip of the arm 66.

以降の動作を図８に基づいて説明する。
図８（ａ）に示すように、フィンガ６７、６７でパーキングギヤ部２５を挟みながら、熱間鍛造品Ｗ２を鉛直軸回りに回転させることなく、運搬する。 The subsequent operation will be described with reference to FIG.
As shown in FIG. 8A, the hot forged product W2 is transported without rotating around the vertical axis while the parking gear portion 25 is sandwiched between the fingers 67 and 67.

冷間鍛造機７０は、（ｂ）に示すように、歯仕上げダイ７１と、プッシャ７２とからなる。フィンガ６７、６７で、歯仕上げダイ７１に正確にパーキングギヤ部２５をセットする。正確にセットすることにより、歯仕上げダイ７１の位相とパーキングギヤ部２５の位相とが合致する。   The cold forging machine 70 includes a tooth finishing die 71 and a pusher 72 as shown in FIG. The parking gear 25 is accurately set on the tooth finish die 71 by the fingers 67 and 67. By setting it accurately, the phase of the tooth finishing die 71 and the phase of the parking gear portion 25 match.

（ｃ）に示すように、プッシャ７２にて、熱間鍛造品Ｗ２を歯仕上げダイ７１へ強く押し下げる。この冷間鍛造により、歯２６が仕上げられ、図２に示すパーキングギヤ付きプーリシャフト２０が得られる。   As shown in (c), the push forge 72 pushes the hot forged product W <b> 2 strongly toward the tooth finish die 71. The teeth 26 are finished by this cold forging, and the pulley shaft 20 with a parking gear shown in FIG. 2 is obtained.

以上に述べた製造手順を、フロー図に基づいて再現する。
図９に示すように、丸棒を適当な長さに切断することで棒状素材を造る（ＳＴ０１）。
この棒状素材を熱間鍛造機に掛け、パーキングギヤ部を含めてプーリシャフトを造形する（ＳＴ０２：熱間鍛造工程）。
得られた熱間鍛造品をロボットなどで回転位置決め機構まで運搬する（ＳＴ０３：運搬工程）。 The manufacturing procedure described above is reproduced based on the flowchart.
As shown in FIG. 9, a rod-shaped material is made by cutting a round bar into an appropriate length (ST01).
This rod-shaped material is put on a hot forging machine to form a pulley shaft including a parking gear (ST02: hot forging process).
The obtained hot forged product is transported to a rotary positioning mechanism by a robot or the like (ST03: transport process).

回転位置決め機構で、熱間鍛造品を所定の回転位置（方位）に改める（ＳＴ０４：位置決め工程）。
位置が決められた熱間鍛造品をローダで慎重に冷間鍛造機まで運搬する（ＳＴ０５：精密運搬工程）。
冷間鍛造機でパーキングギヤ部を仕上げる（ＳＴ０６：冷間鍛造工程）。 The hot forging product is changed to a predetermined rotational position (orientation) by the rotational positioning mechanism (ST04: positioning step).
The hot forged product whose position has been determined is carefully transported to the cold forging machine with a loader (ST05: precision transport process).
A parking gear part is finished with a cold forging machine (ST06: cold forging process).

鍛造工程は熱間鍛造工程と冷間鍛造工程だけで済む。機械加工は不要である。したがって、生産性を良好に保ちつつ金型費用を下げることができるパーキングギヤ付きプーリシャフトの製造方法が提供される。   The forging process only needs a hot forging process and a cold forging process. No machining is necessary. Therefore, the manufacturing method of the pulley shaft with a parking gear which can reduce metal mold | die cost, maintaining productivity favorable is provided.

尚、回転位置決め機構は、本実施例では矢形部材を歯底へ嵌める方式を採用した。この方式であれば、構造が簡単である。しかし、矢形部材を非接触式のセンサ（イメージセンサなど）に変更することは差し支えない。   In this embodiment, the rotational positioning mechanism employs a method of fitting the arrow-shaped member to the tooth bottom. With this method, the structure is simple. However, the arrow member may be changed to a non-contact type sensor (image sensor or the like).

本発明は、無段変速機に内蔵されるパーキングギヤ付きプーリシャフトに好適である。   The present invention is suitable for a pulley shaft with a parking gear incorporated in a continuously variable transmission.

１０…無段変速機、２０…パーキングギヤ付きプーリシャフト、２１…シャフト部、２２…プーリ部、２３…パーキングギヤ、２５…パーキングギヤ部、３０…パーキングギヤ付きプーリシャフトの製造装置、３１…熱間鍛造機、３２…運搬手段、４０…回転位置決め機構、４５…回転体、４６…駆動手段、６０…ローダ、６１…レール、６２…スライダ、６３…移動シリンダ、６６…アーム、６７…フィンガ、７０…冷間鍛造機、Ｗ１…熱間鍛造品、Ｗ２…回転方向の位置が決められた熱間鍛造品。 DESCRIPTION OF SYMBOLS 10 ... Continuously variable transmission, 20 ... Pulley shaft with parking gear, 21 ... Shaft part, 22 ... Pulley part, 23 ... Parking gear, 25 ... Parking gear part, 30 ... Manufacturing apparatus of pulley shaft with parking gear, 31 ... Heat Inter-forging machine, 32 ... conveying means, 40 ... rotating positioning mechanism, 45 ... rotating body, 46 ... driving means, 60 ... loader, 61 ... rail, 62 ... slider, 63 ... moving cylinder, 66 ... arm, 67 ... finger, 70 ... Cold forging machine, W1 ... Hot forging product, W2 ... Hot forging product with a determined position in the rotational direction.

Claims (1)

プーリシャフトにパーキングギヤを一体形成してなるパーキングギヤ付きプーリシャフトの製造装置であって、
棒状素材を熱間鍛造することで、シャフト部にプーリ部を造形し且つ前記プーリ部にパーキングギヤ部を造形する熱間鍛造機と、
前記パーキングギヤ部を対象に回転方向の位置を決定する回転位置決め機構と、
回転方向の位置が決められた熱間鍛造品に冷間鍛造を施すことで前記パーキングギヤ部を仕上げる冷間鍛造機と、
前記回転位置決め機構から前記冷間鍛造機まで前記回転方向の位置が決められた熱間鍛造品を運搬するローダと、からなり、
前記回転位置決め機構は、前記熱間鍛造品を支える回転体と、この回転体を鉛直軸回りに回転する駆動手段とを備え、
前記ローダは、前記回転位置決め機構の中心と前記冷間鍛造機の中心とを通る線に平行に敷設されたレールと、このレールに載っているスライダと、このスライダを前記レールに沿って移動する移動シリンダと、前記スライダに載っているアームと、このアームの先端に設けられ前記位置決めされた前記熱間鍛造品を挟むフィンガとからなり、前記熱間鍛造品を回転させることなく平行移動することを特徴とするパーキングギヤ付きプーリシャフトの製造装置。 A pulley shaft manufacturing apparatus with a parking gear formed by integrally forming a parking gear on a pulley shaft,
By hot forging a rod-shaped material, a hot forging machine that forms a pulley portion on the shaft portion and a parking gear portion on the pulley portion;
A rotation positioning mechanism for determining a position in a rotation direction with respect to the parking gear portion;
A cold forging machine that finishes the parking gear portion by performing cold forging on a hot forged product whose position in the rotational direction is determined;
A loader for transporting a hot forged product whose position in the rotational direction is determined from the rotational positioning mechanism to the cold forging machine ,
The rotational positioning mechanism includes a rotating body that supports the hot forged product, and a driving unit that rotates the rotating body around a vertical axis.
The loader has a rail laid parallel to a line passing through the center of the rotary positioning mechanism and the center of the cold forging machine, a slider mounted on the rail, and moves the slider along the rail. It consists of a moving cylinder, an arm mounted on the slider, and a finger that is provided at the tip of the arm and sandwiches the positioned hot forged product, and moves in parallel without rotating the hot forged product. An apparatus for producing a pulley shaft with a parking gear.
JP2011044178A 2011-03-01 2011-03-01 Equipment for manufacturing pulley shaft with parking gear Expired - Fee Related JP5704966B2 (en)

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