JPH06182476A - Forming method of rim part of wheel and production of wheel by utilizing this method - Google Patents
Forming method of rim part of wheel and production of wheel by utilizing this methodInfo
- Publication number
- JPH06182476A JPH06182476A JP4339164A JP33916492A JPH06182476A JP H06182476 A JPH06182476 A JP H06182476A JP 4339164 A JP4339164 A JP 4339164A JP 33916492 A JP33916492 A JP 33916492A JP H06182476 A JPH06182476 A JP H06182476A
- Authority
- JP
- Japan
- Prior art keywords
- rim
- molding
- cleaving
- wheel
- molds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Forging (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アルミニューム合金や
マグネシウム合金等のように、塑性加工性に富む材質か
ら一体に形成されるホイールのリム断面形成方法及びこ
れを利用したホイールの製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a rim cross section of a wheel integrally formed from a material having high plastic workability such as an aluminum alloy or a magnesium alloy, and a method for manufacturing a wheel using the same. It is a thing.
【０００２】[0002]
【従来技術及び課題】ホイールには、ディスク部とこの
外周に連設されるリム部が一体に成型されたものと、前
記リム部が別体に成型された後でディスク部に組み付け
られるものとがある（図１，図２参照）。前記いずれの
形式のホイールにおいても、前記リム部はディスク部と
の結合部の外周側にドロップセンター部、内リム及び外
リムが形成された構成となる。2. Description of the Related Art Wheels have a disc portion and a rim portion continuously formed on the outer periphery of the wheel, which are integrally molded, and a rim portion which is separately molded and then assembled to the disc portion. (See FIGS. 1 and 2). In any of the above-described wheels, the rim portion has a structure in which a drop center portion, an inner rim, and an outer rim are formed on the outer peripheral side of a joint portion with the disc portion.
【０００３】軽合金ホイールの場合、このリム部は鍛造
によって成型されるのが通常であり、軽合金製のブロッ
ク状素材又は円盤状素材（以下、初期素材という）から
複数の鍛造工程を経て一旦皿状体に成型され、この皿状
体からロール成型によって最終形状のリム部断面に成型
される。例えば、特公平3-2574号に開示される従来の方
法では、リム部以外の部分を最終形状に仕上げた皿状体
を鍛造によって製作し、この後、この鍛造後のリム相当
部をロール成形によって最終形状に仕上げている。リム
部内周側にディスク部との結合部となる取付けフランジ
を具備するリム部のみの成型においても同様な方法が採
用される。In the case of a light alloy wheel, this rim portion is usually molded by forging, and a block material or disk material (hereinafter referred to as an initial material) made of light alloy is first subjected to a plurality of forging steps and then once. The dish-shaped body is molded, and the dish-shaped body is roll-molded into the final shape of the rim section. For example, in the conventional method disclosed in Japanese Examined Patent Publication No. 3-2574, a plate-shaped body in which the portion other than the rim portion is finished to the final shape is manufactured by forging, and then the portion corresponding to the rim after the forging is roll-formed. The final shape is finished by. A similar method is adopted in the molding of only the rim portion having the mounting flange serving as the coupling portion with the disc portion on the inner peripheral side of the rim portion.
【０００４】このような従来のリム部の成型方法では、
鍛造によって初期材から皿状体に成型するに際して要求
される鍛造圧力が極端に大きい。なぜなら、皿状体は底
部の周縁から環状部が突出した形態であるから、鍛造工
程においては、初期材が成型用の金型内で前記底部から
環状部にかけて屈曲するように展延されなければなら
ず、このように素材が展延されるときには素材の移動抵
抗が大きいからである。In such a conventional molding method of the rim portion,
The forging pressure required to form the initial material into a dish by forging is extremely high. Because the plate-shaped body has a shape in which the annular portion projects from the peripheral edge of the bottom portion, in the forging step, the initial material must be spread so as to bend from the bottom portion to the annular portion in the molding die. This is because the resistance to movement of the material is large when the material is spread in this way.
【０００５】したがって、初期材を１回の鍛造工程で皿
状体に成型しようとすると、十分な鍛造圧力を生成する
ための装置が巨大化するとともに、鍛造用金型も巨大化
することは避けられず、実際的ではない。そこで、従来
は、鍛造圧力を低減するために、この鍛造工程を複数工
程に分離している。この場合には、各鍛造工程における
展延度合いが少ないことから、各工程での鍛造圧力が低
減され、鍛造装置が小型化できる。Therefore, if the initial material is to be molded into a dish-shaped body in a single forging step, the device for generating a sufficient forging pressure becomes enormous, and the forging die is also prevented from enlarging. Not practical, not practical. Therefore, conventionally, in order to reduce the forging pressure, this forging step is separated into a plurality of steps. In this case, since the degree of spreading in each forging step is small, the forging pressure in each step is reduced, and the forging device can be downsized.
【０００６】ところが、この場合は、複数の工程を経て
皿状体に成型されるものであるから、生産性が悪い。各
工程用の金型が必要となるとともに、初期材から皿状体
に成型するまでの所要時間が長いからであり、各工程相
互の間に時間的ロスや被加工材を移送する必要があるか
らである。この結果、リム部断面加工の全体としても、
生産性が不十分となる。In this case, however, the productivity is poor because the plate-shaped body is molded through a plurality of steps. This is because a die for each process is required and the time required from the initial material to mold into a dish is long, and it is necessary to transfer the time loss and the work material between each process. Because. As a result, even for the entire rim section processing,
Productivity is insufficient.
【０００７】本発明は、かかる点に鑑みてなされたもの
であり、『塑性加工可能な初期材から、リムとこの内周
側に続くディスク結合部とからなるリム部を一体に形成
するホイールのリム部の加工方法』において、初期材か
ら皿状体に成型されるまでの工程を簡素化できるように
してリム部の加工における所要時間を短縮するとともに
使用金型の数を少なくできるようにすることをその課題
とする。 ［請求項１の発明について］The present invention has been made in view of the above point, and relates to "a wheel in which a rim portion composed of a rim and a disc coupling portion continuing to the inner peripheral side is integrally formed from a plastically machined initial material. "Processing of rim part", it is possible to simplify the process from the initial material to the plate-shaped body, thereby shortening the time required for processing the rim part and reducing the number of molds used. That is the subject. [Invention of Claim 1]
【０００８】[0008]
【技術的手段】上記課題を解決するための本発明の技術
的手段は、『初期材10を相互に対向する一対の金型301,
302 によって加圧し、この加圧に伴ってこれら金型の周
縁境界部から突出する素材突出部を前記二つの金型と相
対回転するロールにより一方の金型 301の胴部側に屈曲
するように成型して前記初期材を皿状体90に成型する工
程と、この皿状体90の底部91に一致する外周部を外リム
側と内リム側とに裂開する裂開工程と、前記裂開工程に
よって形成された各部をリム断面にロール成型する工程
とを具備し、前記皿状体の底部には、少なくともリム部
20のディスク結合部21を具備する様にした』ことであ
る。[Technical Means] The technical means of the present invention for solving the above-mentioned problem is to describe a "a pair of molds 301, which face the initial material 10 to each other,
Apply pressure by 302, and bend the material protrusions protruding from the peripheral boundary of these molds to the body part side of one mold 301 with the rolls that rotate relative to the two molds. Molding and molding the initial material into a dish 90; a cleaving step of cleaving an outer peripheral portion of the dish 90, which matches the bottom 91, into an outer rim side and an inner rim side; A step of roll-forming each part formed by the opening step into a rim cross section, wherein at least the rim part is formed on the bottom of the dish-shaped body.
That is, it has 20 disk coupling parts 21 ”.
【０００９】[0009]
【作用】上記技術的手段は次のように作用する。初期材
10は、金型301,302 間に介在されてこれら金型相互が軸
線方向に加圧されることによって展延される。この加圧
が進行するにしたがって初期材を構成する素材が金型の
境界部から外部に突出する。The above technical means operates as follows. Initial material
10 is spread by being interposed between the molds 301 and 302 and pressing these molds in the axial direction. As the pressurization progresses, the material forming the initial material projects to the outside from the boundary portion of the mold.
【００１０】そして、この素材突出部を前記二つの金型
と相対回転するロールにより一方の金型 302の胴部側に
屈曲させて皿状体90が成型される。この皿状体の成型加
工の際、金型301,302 間に作用する加圧力は比較的小さ
くてよい。前記一対の金型の境界部から突出する環状の
素材突出部はロール成型用のロールと部分的に接触する
だけであるから、鍛造成型によって皿状体に成型する場
合のように、素材の全体が成型用金型と接触する場合に
比べて素材の展延抵抗が大幅に低減されるからである。Then, the plate-shaped body 90 is formed by bending the protruding portion of the material to the body portion side of one of the molds 302 by a roll which rotates relative to the two molds. When molding the plate-shaped body, the pressing force acting between the molds 301 and 302 may be relatively small. Since the annular material projecting part projecting from the boundary part of the pair of molds only partially contacts the roll forming roll, as in the case of forming into a dish by forging, the whole material is This is because the spreading resistance of the material is significantly reduced as compared with the case where is contacted with the molding die.
【００１１】このようにして成型された皿状体が、裂開
工程、及び、この裂開後の各部のロール成型工程を経て
リム部断面に仕上げられる。The dish-shaped body molded in this way is finished into a rim section through a cleaving step and a roll-molding step of each part after the cleaving.
【００１２】[0012]
【効果】初期材10から皿状体90に成型するまでの工程が
一対の金型301,302 を用いた一つの工程となるから、従
来の加工方法に比べて初期材10からリム部20を成型する
ための加工所要時間が短縮できるとともに、所要金型の
数も少なくなる。従って、ホイールの製造の際の生産性
が従来の方法を採用するものに比べて格段に向上し、ホ
イールが安価に製作できる。[Effect] Since the process from the initial material 10 to the plate-shaped body 90 is one step using the pair of molds 301 and 302, the rim portion 20 is molded from the initial material 10 as compared with the conventional processing method. The processing time required for this can be shortened, and the number of required molds can be reduced. Therefore, the productivity at the time of manufacturing the wheel is remarkably improved as compared with the conventional method, and the wheel can be manufactured at low cost.
【００１３】［請求項２の発明について］この発明は、
上記請求項１の発明をディスク部とリム部とが一体とな
った形式のホイールの製造方法にそのまま利用するもの
であり、皿状体90に成型する際、金型301,302 相互の対
向面をホイールの表面形状に適合させて皿状体90の底部
をホイールのディスク部に成型することである。[Invention of Claim 2] This invention is
The invention of claim 1 is used as it is in a method of manufacturing a wheel of a type in which a disc portion and a rim portion are integrated, and when the plate-shaped body 90 is molded, the surfaces of the molds 301, 302 facing each other are the wheels. The bottom of the dish 90 is molded into the disk portion of the wheel in conformity with the surface shape of the wheel.
【００１４】この場合には、皿状体90の成型完了時点で
ディスク部１が成型されることとなって、ディスク部と
リム部とが一体のホイールが後続の裂開工程、及び、ロ
ール成型工程を経ることでホイールが完成する。In this case, the disk portion 1 is molded at the time when the molding of the plate-shaped body 90 is completed, and the wheel in which the disk portion and the rim portion are integrated is followed by the cleaving step and the roll molding. The wheel is completed by going through the process.
【００１５】[0015]
【実施例】次に、上記した本発明の実施例を図面に従っ
て詳述する。この実施例では、図１のように初期材10か
らディスク部１とリム部20とが一体となった自動車用の
ホイールを製造するようにしており、このための装置と
して、図３に示すように、下方の固定の金型 301と上方
の可動の金型 302を上下に対向させて、前記金型 302は
上下に駆動される。これら金型の外周の４か所に、皿状
体成型用の第１成形ローラ 401、裂開用の裂開ローラ 4
02、及び、リム断面のドロップセンタ23の外リム側から
外リム22の全体までを成型するための第２成型ローラ 4
03、及び、ドロップセンタ23の内リム側から内リム24の
全体を成型するための第３成型ローラ 404が移動可能に
配設されている。Embodiments of the present invention described above will now be described in detail with reference to the drawings. In this embodiment, a wheel for an automobile in which the disc portion 1 and the rim portion 20 are integrated is manufactured from the initial material 10 as shown in FIG. 1, and an apparatus for this is shown in FIG. In addition, the lower fixed mold 301 and the upper movable mold 302 are vertically opposed to each other, and the mold 302 is driven vertically. At four locations on the outer periphery of these molds, a first forming roller 401 for forming a dish and a cleaving roller 4 for cleaving 4
02 and a second molding roller 4 for molding from the outer rim side of the drop center 23 of the rim cross section to the entire outer rim 22
03 and a third molding roller 404 for molding the entire inner rim 24 from the inner rim side of the drop center 23 is movably arranged.
【００１６】前記金型 302は支持体５によって支持され
ており、この金型 302が金型 301の軸線と同軸上で対向
方向に加圧される。このため、この支持体５は装置のフ
レーム50の上端のデッキ51に設けた油圧装置52の出力軸
に連設され、油圧装置52によって昇降駆動される。金型
301の上面は第１加圧面31となっており、ディスク部１
の外面の表面形状と同様に成形されている。ディスク部
１の外面には凹凸模様部が形成されるから、この第１加
圧面31は前記凹凸模様部と一致した凹凸表面となってい
る。又、この第１加圧面31の外周に連続する胴部32は、
ドロップセンタ23の一部から外リム22の内周面及びこれ
に続く外側面までと適合させた断面形状となっている。The mold 302 is supported by the support 5, and the mold 302 is pressed in the opposite direction coaxially with the axis of the mold 301. Therefore, the support 5 is connected to the output shaft of the hydraulic device 52 provided on the deck 51 at the upper end of the frame 50 of the device, and is driven up and down by the hydraulic device 52. Mold
The upper surface of 301 is the first pressing surface 31, and the disk unit 1
The outer surface is shaped similarly to the outer surface. Since an uneven pattern portion is formed on the outer surface of the disk portion 1, the first pressing surface 31 has an uneven surface that matches the uneven pattern portion. Further, the body portion 32 continuous to the outer periphery of the first pressure surface 31 is
The cross-sectional shape is adapted from the part of the drop center 23 to the inner peripheral surface of the outer rim 22 and the outer surface following the inner peripheral surface.
【００１７】一方、金型 302もその下面がディスク部１
の内面形状に一致した第２加圧面33となり、この金型 3
02の胴部34の断面形状は、ドロップセンタ23の一部から
内リム24の内周面及び外側面までの断面形状に一致する
ように設定されている。上記金型 301と金型 302との境
界部の側方には、図４に示すように、上記の４つのロー
ラ装置が円周を４等分した位置に配置されている。これ
らローラ装置は共に、金型 301を固定した固定ベッド61
と同心に設けられた環状の回転ベッド62の上面に配置さ
れ、同図において、第１成形ローラ 401を具備する第１
ローラ装置41、裂開ローラ 402を具備する第２ローラ装
置42、第２成型ローラ 403を具備する第３ローラ装置4
3、および、第３成型ローラ 404を具備するローラ装置4
4が、前記固定ベッド61において、同図の反時計方向に
前記順序で配列される。On the other hand, the lower surface of the die 302 is also the disc portion 1.
The second pressing surface 33 that matches the inner surface shape of
The cross-sectional shape of the body portion 34 of 02 is set so as to match the cross-sectional shape from a part of the drop center 23 to the inner peripheral surface and the outer surface of the inner rim 24. As shown in FIG. 4, the four roller devices described above are arranged on the side of the boundary between the mold 301 and the mold 302 at positions where the circumference is divided into four equal parts. Both of these roller devices have a fixed bed 61 to which the mold 301 is fixed.
Is arranged on the upper surface of an annular rotating bed 62 concentrically provided with the first forming roller 401 in FIG.
Roller device 41, second roller device 42 having tear roller 402, third roller device 4 having second molding roller 403
3, and a roller device 4 including a third molding roller 404
4 are arranged in the fixed bed 61 in the order described above in the counterclockwise direction in FIG.
【００１８】各ローラ装置は、ローラを支持する支持部
が、半径方向と上下方向の両方に移動可能であり、特
に、ローラ装置44の支持部は、前記二方向の移動に加え
て第３成型ローラ 404の姿勢を変えるべく回転方向の移
動も可能になっている。前記各支持部は、油圧駆動によ
って制御される構成である。このため、回転ベッド62の
下部には、相対回動自在の油圧回路接続装置が装備され
る。この接続装置として、この実施例では、各ローラ装
置への油圧回路に連通する溝部を回転ベッド62の下部外
周に形成し、前記各溝部に対向する入り口側の溝部を具
備する環状の継ぎ手63を前記回転ベッドと同心状態に外
嵌固定している。ここで、前記継ぎ手63と回転ベッド62
の外周面との間には適宜シール手段が介装されており、
これらが相対回動しても、各油圧回路からの漏れが生じ
ない。In each of the roller devices, the supporting portion for supporting the roller is movable both in the radial direction and in the vertical direction, and in particular, the supporting portion of the roller device 44 is moved in the two directions, and in addition to the third molding. It is also possible to move in the rotation direction to change the posture of the roller 404. Each of the support portions is configured to be hydraulically controlled. Therefore, the lower part of the rotary bed 62 is equipped with a relatively rotatable hydraulic circuit connection device. As this connection device, in this embodiment, a groove portion communicating with a hydraulic circuit to each roller device is formed on the lower outer periphery of the rotary bed 62, and an annular joint 63 having an inlet side groove portion facing each groove portion is provided. It is externally fitted and fixed concentrically with the rotary bed. Here, the joint 63 and the rotating bed 62
Sealing means is appropriately interposed between the outer peripheral surface of the
Even if these rotate relative to each other, leakage from each hydraulic circuit does not occur.
【００１９】そして、前記継ぎ手63には、油圧源65から
制御弁ユニット64を介して各油圧回路が接続されてい
る。この制御弁ユニットは、各油圧回路を各別に制御す
る多数の制御弁を具備し、これら制御弁がマイクロコン
ピュータなどの出力にによって各別に制御されて、上記
した各ローラ装置の支持部の位置を制御し、かつ、第３
成型ローラ 404の姿勢を制御する。Each hydraulic circuit is connected to the joint 63 from a hydraulic source 65 via a control valve unit 64. This control valve unit is equipped with a large number of control valves for controlling each hydraulic circuit individually, and these control valves are individually controlled by the output of a microcomputer or the like to control the position of the supporting portion of each roller device. Control and third
Controls the posture of the forming roller 404.
【００２０】前記回転ベッド62は、固定ベッド61によっ
て回転自在に支持されており、その上部に装備させた傘
歯車と、駆動モータ66と伝動する減速機67の出力軸に設
けた傘歯車とを、噛み合わせている。上記装置を用いて
初期材10から最終形状のホイールを製作する方法の実際
について図５〜図９に基いて説明する。The rotary bed 62 is rotatably supported by a fixed bed 61, and includes a bevel gear mounted on the upper portion thereof and a bevel gear provided on an output shaft of a reduction gear 67 for transmitting a drive motor 66. , Are biting each other. An actual method of manufacturing a wheel having a final shape from the initial material 10 using the above apparatus will be described with reference to FIGS.
【００２１】この実施例の方法では、図１のように、金
型301,302 の間に円柱状の初期材10が挿入され、次い
で、金型 302が油圧装置52の出力によって降下駆動さ
れ、前記初期材10が金型301,302 によって加圧される。
加圧が進行するにしたがって、図５のように、初期材10
は第１加圧面31および第２加圧面33に倣った形状に成型
されると共に、この加圧に伴う展延によって余剰素材
が、金型301,302 の境界部からはみ出す。In the method of this embodiment, as shown in FIG. 1, the cylindrical initial material 10 is inserted between the molds 301 and 302, and then the mold 302 is driven downward by the output of the hydraulic device 52, so that The material 10 is pressed by the molds 301 and 302.
As the pressurization progresses, as shown in FIG.
Is molded into a shape that follows the first pressure surface 31 and the second pressure surface 33, and due to the expansion caused by this pressure, excess material protrudes from the boundary between the dies 301 and 302.
【００２２】このとき、回転ベッド62が回転駆動状態に
あり、第１成形ローラ 401が余剰素材の突出部、つま
り、既述した素材突出部側に移動される。この第１成形
ローラ401の外周面は上方に湾曲する円弧状断面部45を
具備し、この円弧状断面部45と素材突出部とが対接す
る。第１成形ローラ 401が支持部によって回転自在に支
持されるとともに回転ベッド62の回転によって前記素材
突出部と相対回転することから、金型301,302 の境界部
から突出する素材突出部は、その突出度合いが拡大する
に従って上方に湾曲される。At this time, the rotary bed 62 is in a rotationally driven state, and the first forming roller 401 is moved to the protruding portion of the surplus material, that is, the material protruding portion side described above. The outer peripheral surface of the first forming roller 401 has an arcuate cross section 45 that curves upward, and the arcuate cross section 45 and the material projecting portion are in contact with each other. Since the first forming roller 401 is rotatably supported by the supporting portion and rotates relative to the material projecting portion due to the rotation of the rotary bed 62, the material projecting portion projecting from the boundary of the molds 301 and 302 has a projecting degree. Is curved upward as it expands.
【００２３】そして、金型 302が最降下位置に降下した
時点では、金型301,302 間には第１加圧面31と33との表
面形状に倣った形状のディスク部１が形成され、その外
周に上方に突出する環状部が形成される。つまり、図６
のような皿状体90が形成され、その底部91は、ディスク
部１に成型されたものとなる。この後、回転ベッド62が
回転されたままで、第１成形ローラ 401が皿状体90から
離反すると共に、図７〜図８のように裂開ローラ 402が
内側に移動されて、皿状体90の底部91の外周側に押し込
まれる。これにより、皿状体90の外周部は、図８のよう
に、裂開されて、裂開ローラ 402が最終位置に押し込ま
れた状態では、ドロップセンタ23の外リム22側の一部と
外リム22に対応する外リム相当部25と、ドロップセンタ
23の内リム24側の一部と内リム24とに対応する内リム相
当部26とに裂開される。When the die 302 descends to the lowest position, the disc portion 1 having a shape that follows the surface shape of the first pressure surfaces 31 and 33 is formed between the dies 301 and 302, and the outer periphery thereof is formed. An annular portion protruding upward is formed. That is, FIG.
The dish-like body 90 as described above is formed, and the bottom portion 91 thereof is molded into the disc portion 1. Thereafter, while the rotary bed 62 is still rotating, the first forming roller 401 is separated from the dish 90, and the cleaving roller 402 is moved inward as shown in FIGS. 7 to 8 to move the dish 90. Is pushed to the outer peripheral side of the bottom portion 91 of the. As a result, as shown in FIG. 8, the outer peripheral portion of the dish 90 is cleaved, and when the cleaving roller 402 is pushed to the final position, a part of the drop center 23 on the outer rim 22 side and the outer side. The outer rim equivalent part 25 corresponding to the rim 22 and the drop center
A part of the inner rim 24 side of 23 and an inner rim corresponding part 26 corresponding to the inner rim 24 are cleaved.
【００２４】この裂開工程が終了すると、裂開ローラ 4
02が後退し、次いで、図９のように第２成型ローラ 403
が外リム相当部25側に進出して、ドロップセンタ23の一
部と外リム22が成型される。この実施例では、前記裂開
ローラ 402の外周面の形状をドロップセンタ23の一部〜
外リム22の外周面の外周面の形状に適合させてあるか
ら、また、金型 301の胴部の形状は、リム２の外リム22
側の内周面および外側面形状に一致させてあるから、こ
の裂開ローラ 402を所定の位置に押し込むと、リム２の
ドロップセンタ23の一部〜外リム22の断面が成型され
る。When this cleaving process is completed, the cleaving roller 4
02 moves backward, and then the second molding roller 403 as shown in FIG.
Moves to the side of the outer rim corresponding portion 25, and a part of the drop center 23 and the outer rim 22 are molded. In this embodiment, the shape of the outer peripheral surface of the cleaving roller 402 is defined as a part of the drop center 23.
Since the shape of the outer peripheral surface of the outer rim 22 is adapted to the outer peripheral surface, the shape of the body of the mold 301 is the same as the outer rim 22 of the rim 2.
Since the shapes of the inner peripheral surface and the outer surface on the side are matched, when the cleaving roller 402 is pushed into a predetermined position, a cross section of a part of the drop center 23 of the rim 2 to the outer rim 22 is molded.
【００２５】この外リム22側断面の成型工程と同時また
はこの工程の終了後に、同図に示すように、第３成型ロ
ーラ 404が内リム相当部26に対接される。この実施例で
は、この第３成型ローラ 404を具備するローラ装置44を
スピニングローラ装置としてあり、第３成型ローラ 404
の姿勢を制御しながら、内リム相当部26をスピニング加
工して 302の胴部34に倣った断面形状に仕上げる。これ
により、ドロップセンタ23の一部と内リム24とが成型さ
れる。この後、第３成型ローラ 404が復帰して成型され
たリム２の外側に移動される。Simultaneously with or after the step of molding the side section of the outer rim 22, the third molding roller 404 is brought into contact with the portion 26 corresponding to the inner rim as shown in FIG. In this embodiment, the roller device 44 including the third molding roller 404 is a spinning roller device, and the third molding roller 404 is used.
While controlling the posture of the inner rim, the inner rim corresponding portion 26 is subjected to a spinning process to finish in a sectional shape following the body portion 302 of 302. As a result, a part of the drop center 23 and the inner rim 24 are molded. After this, the third molding roller 404 returns and is moved to the outside of the molded rim 2.
【００２６】以上の各工程が終了すると、ディスク部１
とリム２とが一体となったホイールが成型される。この
実施例では、固定ベッド61に装備されたノックアウト装
置68の出力軸が金型 301を貫通して、その先端にディス
ク部１の外面中央部の表面形状に一致したプレート69を
具備させているから、ノックアウト装置68を作動させ
て、その出力軸を突出させると、成型完了後のホイール
が金型 301の上方に取り出される。When the above steps are completed, the disk unit 1
The wheel in which the rim 2 and the rim 2 are integrated is molded. In this embodiment, the output shaft of the knockout device 68 mounted on the fixed bed 61 penetrates through the mold 301, and a plate 69 conforming to the surface shape of the outer central portion of the disc portion 1 is provided at the tip thereof. Then, when the knockout device 68 is operated and its output shaft is projected, the wheel after completion of molding is taken out above the mold 301.
【００２７】この後、ホイールを上記実施例の装置から
取り出した後、仕上げ抜きやバリ取り、さらには仕上げ
切削又は研磨をするとホイールが完了する。又、ノック
アウト装置68を復帰作動させてプレート69を金型 301内
に戻して上記一連の工程を繰り返すと、ホイールが連続
的に製造できる。なお、上記実施例の方法において、初
期材10の体積は、製品ホイールの体積に合せることは言
うまでもない。After that, the wheel is completed by removing the wheel from the apparatus of the above-mentioned embodiment, and then performing finishing punching, deburring, and further finishing cutting or polishing. Further, the wheel can be continuously manufactured by reactivating the knockout device 68 to return the plate 69 into the mold 301 and repeating the above series of steps. In the method of the above embodiment, it goes without saying that the volume of the initial material 10 matches the volume of the product wheel.
【００２８】また、第１成形ローラ401 を用いて皿状体
90に成型する工程では、皿状体90の胴部の形状を金型30
2 の胴部34に対接するように成型する必要はない。むし
ろ、第１成形ローラ 401の押し込み位置を調節すること
により、皿状体90の胴部内周径を 302の胴部34の下部の
直径よりも僅かに大きく設定しておけば、裂開後の外リ
ム相当部25の比率が十分となるから、外リム相当部25と
内リム相当部26との適正化が図れる。Further, the dish-shaped body is formed by using the first forming roller 401.
In the process of molding to 90, the shape of the body of the dish 90 is
It does not have to be molded so as to be in contact with the second body 34. Rather, if the inner diameter of the body of the dish 90 is set to be slightly larger than the diameter of the lower portion of the body 34 of 302 by adjusting the pushing position of the first forming roller 401, it is Since the ratio of the outer rim equivalent portion 25 is sufficient, the outer rim equivalent portion 25 and the inner rim equivalent portion 26 can be optimized.
【００２９】また、裂開ローラ 402による裂開工程で
は、裂開ローラ 402が水平移動と上下移動とが可能であ
るから、図６の裂開線92に沿って、斜めにまたは曲線的
に移動するように駆動することが出来、このように、所
定の移動軌跡に設定することによっても、外リム相当部
25と内リム相当部26との比率が適正に設定できる。上記
実施例では、皿状体90の底部91は、ディスク部１に成型
されたものとしたが、この底部91を、ディスク結合部21
のみを具備する形式に成型することも可能である。この
場合には、第１加圧面31はディスク結合部21の外面に一
致させ、第２加圧面33はディスク結合部21の内面に一致
させたものとなる。そして、金型302 が最降下位置に降
下した状態では、図１０のように底部91は薄肉の被切除
部93の外周にディスク結合部21に相当する部分が連続し
たものとなる。Further, in the cleaving process by the cleaving roller 402, the cleaving roller 402 can move horizontally and vertically, so that the cleaving roller 402 moves diagonally or curvedly along the cleaving line 92 in FIG. The outer rim equivalent part can also be driven by setting a predetermined movement trajectory in this way.
The ratio of 25 to the inner rim equivalent portion 26 can be set appropriately. In the above embodiment, the bottom 91 of the plate-shaped body 90 is formed on the disc portion 1. However, the bottom 91 is formed on the disc coupling portion 21.
It is also possible to mold it into a form having only one. In this case, the first pressure surface 31 is made to coincide with the outer surface of the disc coupling portion 21, and the second pressure surface 33 is made to coincide with the inner surface of the disc coupling portion 21. Then, when the die 302 descends to the lowest position, the bottom portion 91 has a portion corresponding to the disc coupling portion 21 continuous to the outer periphery of the thin cut portion 93 as shown in FIG.
【００３０】この場合には、図２に示すようなリム部20
が上記装置によって成型される。なお、、前記被切除部
93は、上記方法によるリム部20の成型完了後において打
ち抜いて除去される。また、この打ち抜きのときにこの
ディスク結合部21に所定のピッチで多数のボルト孔が形
成される。このリム部20は、別途製作されたディスク部
１の外周部とネジ止めされて同図のホイールとなる。In this case, the rim portion 20 as shown in FIG.
Is molded by the above apparatus. The part to be cut
93 is punched out and removed after the molding of the rim portion 20 by the above method is completed. Also, during this punching, a large number of bolt holes are formed in the disc coupling portion 21 at a predetermined pitch. The rim portion 20 is screwed to the outer peripheral portion of the separately manufactured disc portion 1 to form the wheel shown in FIG.
【００３１】また、上記実施例のものでは、回転ベッド
62に各ローラ装置を配備させて、初期材10からホイール
またはリム部20に仕上げるまでの工程を、一つの装置内
で実施するが、皿状体90の成型完了後の裂開工程および
リム２の断面の成型工程を別工程としてもよい。この場
合は、各金型の胴部32,34 リム内周面の形状に合わせな
くてもよい。In the above embodiment, the rotary bed is used.
The process from the initial material 10 to the finish of the wheel or rim portion 20 is carried out in one device by deploying each roller device on the 62, but the cleaving process after the completion of the molding of the dish 90 and the rim 2 The step of molding the cross section may be a separate step. In this case, it is not necessary to match the shape of the inner peripheral surface of the body 32, 34 rim of each mold.
【００３２】なお、リム２の断面の全体をスピニング加
工によって成型する構成としても良い。この場合、上記
実施例の第２ローラ装置43は不要である。その他、次の
ような構成の変更が可能である。 ．被加工材と各ローラ装置とを相対回転させるため
に、各ローラ装置を固定として金型301,302 を同期回転
する構成、 ．上記実施例では自動車用ホイールを例に説明した
が、他の軽車輌ホイールやプーリ等として用いられるホ
イールの製造方法に実施できる。The entire cross section of the rim 2 may be formed by spinning. In this case, the second roller device 43 of the above embodiment is unnecessary. In addition, the following configurations can be changed. ． In order to relatively rotate the workpiece and each roller device, each roller device is fixed and the molds 301 and 302 are synchronously rotated. In the above-mentioned embodiment, the automobile wheel has been described as an example, but the present invention can be applied to a manufacturing method of another light vehicle wheel, a wheel used as a pulley or the like.
【００３３】．上記実施例のものでは、裂開ローラ 4
02を具備させた第１ローラ装置41と、第２成型ローラ 4
03を具備させた第３ローラ装置43とを別個に設けたが、
リム２に対するディスク部１の偏心度合いが大きい場
合、つまり、外リム22の幅が少ない場合には、前記二つ
のローラ装置を一つのローラ装置とすることも出来る。
この場合には、例えば、図１１のような、成型ローラ部
49と裂開ローラ部48とを同軸上で並設一体化させたロー
ラ405 を用いてこれを押し込みながらロール成型する
と、同図のように、前記ローラの裂開ローラ部によって
裂開された素材が成型ローラ部49によって最終的にはリ
ム２の外リム22とこれに続くドロップセンター部23の一
部までの範囲に成型される。.. In the above embodiment, the cleaving roller 4
First roller device 41 equipped with 02 and second molding roller 4
Although the third roller device 43 provided with 03 is provided separately,
When the degree of eccentricity of the disk portion 1 with respect to the rim 2 is large, that is, when the width of the outer rim 22 is small, the two roller devices may be one roller device.
In this case, for example, a molding roller unit as shown in FIG.
When roll forming is performed while pressing the roller 405 in which the 49 and the cleaving roller portion 48 are coaxially arranged side by side and integrated, the material cleaved by the cleaving roller portion of the roller as shown in FIG. Is finally molded by the molding roller portion 49 into a range up to the outer rim 22 of the rim 2 and a part of the drop center portion 23 following the outer rim 22.
【図１】リム部とディスク部が一体のホイールの断面図FIG. 1 is a sectional view of a wheel in which a rim portion and a disc portion are integrated.
【図２】リム部とディスク部とが別体のホイールの断面
図FIG. 2 is a sectional view of a wheel in which a rim portion and a disc portion are separate bodies.
【図３】本発明の方法を実施するために用いる装置の断
面図FIG. 3 is a cross-sectional view of an apparatus used to carry out the method of the present invention.
【図４】第１ローラ装置41〜第４ローラ装置４４の配置
説明図FIG. 4 is a layout explanatory view of first to fourth roller devices 41 to 44.
【図５】皿状体90の成形工程の説明図FIG. 5 is an explanatory diagram of a forming process of the dish 90.
【図６】成形完了状態の皿状体90の断面図FIG. 6 is a sectional view of the plate-shaped body 90 in a completed molding state.
【図７】裂開工程初期の説明図FIG. 7 is an explanatory diagram of the initial stage of the dehiscence process.
【図８】裂開工程終期の説明図FIG. 8 is an explanatory diagram of the final stage of the dehiscence process.
【図９】リム２の断面成型工程の説明図FIG. 9 is an explanatory view of a cross-section molding process of the rim 2.
【図１０】リム部20のみを成型する場合の皿状体90の断
面図FIG. 10 is a cross-sectional view of the dish 90 in which only the rim portion 20 is molded.
【図１１】裂開工程と外リム成型工程とを１工程とする
場合の説明図FIG. 11 is an explanatory view when the dehiscence process and the outer rim molding process are one process.
301,302 ・・・金型 10・・・・・・初期材 90・・・・・・皿状体 91・・・・・・底部 301,302 ・ ・ ・ Mold 10 ・ ・ ・ ・ ・ ・ Initial material 90 ・ ・ ・ ・ ・ ・ Plate-shaped body 91 ・ ・ ・ ・ ・ ・ Bottom
Claims (6)
工を施すことにより、ホイールのリムとこの内周側に続
くディスク結合部とからなるリム部を一体に形成するリ
ム部の成型方法において、相互に対向する一対の金型30
1,302 によって初期材10を加圧し、この加圧に伴う前記
初期材10の展延によってこれら金型の周縁境界部から突
出する素材突出部を前記二の金型と相対回転するロール
により一方の金型の胴部側に屈曲するように成型して前
記初期材10を皿状体90に成型する工程と、この皿状体90
の底部91に一致する外周部を外リム側と内リム側とに裂
開する工程と、前記裂開工程によって形成された各部を
リム断面にロール成型する工程とを具備し、前記皿状体
90の底部91には、少なくともリム部20のディスク結合部
21を具備する様にしたホイールのリム部の成型方法。1. A method of molding a rim portion, wherein an initial material made of a plastically workable material is processed to integrally form a rim portion made up of a wheel rim and a disk coupling portion continuing to the inner peripheral side of the wheel. , A pair of molds 30 facing each other
The initial material 10 is pressed by 1,302, and the material protruding part that protrudes from the peripheral boundary part of these molds due to the spreading of the initial material 10 due to this pressurization A step of forming the initial material 10 into a plate-shaped body 90 by molding so as to bend to the body side of the mold, and the plate-shaped body 90
The plate-shaped body, which comprises a step of cleaving an outer peripheral portion corresponding to the bottom portion 91 of the cuff into an outer rim side and an inner rim side, and a step of roll-forming each part formed by the cleaving step into a rim cross section.
The bottom 91 of the 90 has at least the disc coupling portion of the rim portion 20.
A method of molding a wheel rim that is equipped with 21.
工を施すことにより、リムとこの内周側に続くディスク
結合部とからなるリム部をディスク部と一体に形成する
ホイールの製造方法において、初期材10を相互に対向す
る一対の金型301,302 によって加圧し、この加圧に伴う
前記初期材10の展延によってこれら金型の周縁境界部か
ら突出する素材突出部を前記２つの金型と相対回転する
ロールにより一方の金型の胴部側に屈曲するように成形
して前記初期材10を皿状体90に成型する工程と、この皿
状体90の底部91に一致する外周部を外リム側と内リム側
とに裂開する裂開工程と、前記裂開工程によって形成さ
れた各部をリム断面にロール成型する工程とを具備し、
前記皿状体90の底部91は、ディスク部１とディスク結合
部21を具備する様にしたホイールの製造方法。2. A method for manufacturing a wheel, wherein an initial material made of a plastically workable material is processed to integrally form a rim portion including a rim and a disc coupling portion continuing to the inner peripheral side of the rim portion with the disc portion. , The initial material 10 is pressed by a pair of molds 301 and 302 that face each other, and the material projections that protrude from the peripheral boundary portion of these molds due to the spreading of the initial material 10 due to this pressure are the two molds. And a step of forming the initial material 10 into a dish 90 by bending so as to bend to the body side of one of the molds by a roll that rotates relative to the outer periphery of the dish 90 that matches the bottom 91 of the dish 90. A cleaving step of cleaving the outer rim side and the inner rim side, and a step of roll-molding each part formed by the cleaving step into a rim cross section,
A method of manufacturing a wheel, wherein a bottom portion 91 of the dish 90 is provided with a disc portion 1 and a disc coupling portion 21.
最終のリム断面に倣った形状とし、裂開工程は皿状体90
の成型後前記金型により皿状体90を保持したままで２つ
の金型と相対回転する裂開ローラ 402により裂開する構
成とし、リム断面にロール成型する工程は、裂開された
リム相当部を上記金型301,302 に添わせてロール成型す
る構成とした請求項１に記載のホイールのリム部の成型
方法。3. The body shape of the pair of molds 301, 302 is shaped to follow the final rim cross section, and the plate-shaped body 90 is used for the cleaving process.
After the molding, the mold 90 is held by the mold and cleaved by the cleaving roller 402 that rotates relative to the two molds, and the step of roll-molding the rim cross section is equivalent to the cleaved rim. The method for forming a rim portion of a wheel according to claim 1, wherein the portion is rolled along with the molds 301, 302.
により皿状体90を保持したままで２つの金型と相対回転
する裂開ローラ 402により裂開する構成とし、リム断面
にロール成型する工程は、裂開されたリム相当部を上記
金型301,302に添わせてロール成型する構成としたホイ
ールの製造方法。4. The cleaving step is configured such that after the dish 90 is molded, the claw 90 is held by the mold and cleaved by a cleaving roller 402 that rotates relative to the two molds. The step of roll-molding the cross-section is a wheel manufacturing method in which the cleaved rim-corresponding part is put along the molds 301 and 302 and roll-molded.
ローラ部49とを具備するローラ 405を用いて裂開工程と
外リム22の成型工程とを同時に行う様にした請求項１ま
たは請求項３に記載のホイールのリム部の成型方法。5. The cleaving step and the molding step of the outer rim 22 are simultaneously performed by using a roller 405 having a cleaving roller section 48 and a molding roller section 49 for molding the outer rim 22. Alternatively, the method for molding the rim portion of the wheel according to claim 3.
ローラ部49とを具備するローラ 405を用いて裂開工程と
外リム22の成型工程とを同時に行う様にした請求項２ま
たは請求項３に記載のホイールの製造方法。6. The cleaving step and the molding step of the outer rim 22 are simultaneously performed by using a roller 405 having a cleaving roller section 48 and a molding roller section 49 for molding the outer rim 22. Alternatively, the wheel manufacturing method according to claim 3.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4339164A JP2787399B2 (en) | 1992-12-18 | 1992-12-18 | Method of molding wheel rim and method of manufacturing wheel using the same |
| TW082110423A TW235936B (en) | 1992-12-18 | 1993-12-09 | |
| EP93310126A EP0602951A1 (en) | 1992-12-18 | 1993-12-15 | Method of shaping a wheel |
| KR1019930027836A KR0127877B1 (en) | 1992-12-18 | 1993-12-15 | Method for wheels |
| CN93112889A CN1091681A (en) | 1992-12-18 | 1993-12-17 | The forming method of wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4339164A JP2787399B2 (en) | 1992-12-18 | 1992-12-18 | Method of molding wheel rim and method of manufacturing wheel using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06182476A true JPH06182476A (en) | 1994-07-05 |
| JP2787399B2 JP2787399B2 (en) | 1998-08-13 |
Family
ID=18324848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4339164A Expired - Lifetime JP2787399B2 (en) | 1992-12-18 | 1992-12-18 | Method of molding wheel rim and method of manufacturing wheel using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2787399B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6502444B1 (en) * | 1996-08-05 | 2003-01-07 | Kabushiki Kaisha Kanemitsu | Method of forming a cylindrical portion of a sheet metal member having a center hole |
| JP2014054646A (en) * | 2012-09-11 | 2014-03-27 | Reizu Eng:Kk | Spinning machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52134861A (en) * | 1976-05-07 | 1977-11-11 | Aida Eng Ltd | Method of fabricating car wheels |
| JPS62282734A (en) * | 1986-05-29 | 1987-12-08 | Nippon Isueede Kk | Manufacture of multi-stage puliey |
-
1992
- 1992-12-18 JP JP4339164A patent/JP2787399B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52134861A (en) * | 1976-05-07 | 1977-11-11 | Aida Eng Ltd | Method of fabricating car wheels |
| JPS62282734A (en) * | 1986-05-29 | 1987-12-08 | Nippon Isueede Kk | Manufacture of multi-stage puliey |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6502444B1 (en) * | 1996-08-05 | 2003-01-07 | Kabushiki Kaisha Kanemitsu | Method of forming a cylindrical portion of a sheet metal member having a center hole |
| JP2014054646A (en) * | 2012-09-11 | 2014-03-27 | Reizu Eng:Kk | Spinning machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2787399B2 (en) | 1998-08-13 |
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