JP7311437B2 - Vehicle wheel manufacturing method - Google Patents

Vehicle wheel manufacturing method Download PDF

Info

Publication number
JP7311437B2
JP7311437B2 JP2020006768A JP2020006768A JP7311437B2 JP 7311437 B2 JP7311437 B2 JP 7311437B2 JP 2020006768 A JP2020006768 A JP 2020006768A JP 2020006768 A JP2020006768 A JP 2020006768A JP 7311437 B2 JP7311437 B2 JP 7311437B2
Authority
JP
Japan
Prior art keywords
window
wheel
cavity
vehicle wheel
burrs
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.)
Active
Application number
JP2020006768A
Other languages
Japanese (ja)
Other versions
JP2021112766A (en
Inventor
基彦 榛葉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central Motor Wheel Co Ltd
Original Assignee
Central Motor Wheel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Central Motor Wheel Co Ltd filed Critical Central Motor Wheel Co Ltd
Priority to JP2020006768A priority Critical patent/JP7311437B2/en
Publication of JP2021112766A publication Critical patent/JP2021112766A/en
Application granted granted Critical
Publication of JP7311437B2 publication Critical patent/JP7311437B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction 

Description

本発明は、車両用ホイールの製造方法に関する。 The present invention relates to a method for manufacturing a vehicle wheel.

従来、ハブ部とリム部との間に広がるディスク部に窓部を備えた車両用ホイールを鋳造により成形する技術が知られている。特許文献１には、鋳造の際にディスク部の窓部に発生するバリの対策技術が提案されている。ここでは、窓部の角以外の部位において上型および下型の合わせ面に溶湯収容キャビティを形成し、ホイール成形用キャビティから合わせ面の隙間を通って流出した溶湯を溶湯収容キャビティに収容し、窓部の角を含むバリ除去困難部におけるバリの発生を抑制してバリ除去作業を容易にしている。 2. Description of the Related Art Conventionally, there is known a technique of molding a vehicle wheel having a window portion in a disk portion extending between a hub portion and a rim portion. Patent Literature 1 proposes a technique for dealing with burrs generated in the window portion of the disk portion during casting. Here, a molten metal accommodating cavity is formed on the mating surfaces of the upper mold and the lower mold at a portion other than the corner of the window, and the molten metal flowing out from the wheel molding cavity through the gap between the mating surfaces is accommodated in the molten metal accommodating cavity, Deburring work is facilitated by suppressing the generation of burrs in areas where deburring is difficult, including the corners of the window.

また、特許文献２には、ディスク部に形成された窓部の一部を覆うように、リム部からハブ部方向へ延在する薄肉状の延出部を備えた車両用ホイールが開示されている。この延出部は、ハブ部方向に延びるにつれ車両用ホイールの裏側方向に傾斜し延出するよう形成されている。 Further, Patent Document 2 discloses a vehicle wheel provided with a thin extension portion extending from the rim portion toward the hub portion so as to cover a portion of the window portion formed in the disk portion. there is The extending portion is formed so as to extend toward the rear side of the vehicle wheel while being inclined toward the hub portion.

特許第４６９６８５２号公報Japanese Patent No. 4696852 特開２０１７－１５４９号公報JP 2017-1549 A

鋳造工程でホイール素材に発生したバリは、従来、鋳造工程後のバリ除去工程でホイール素材の表側から工具を使用して除去している。ところが、特許文献１および２は、窓部に工具を挿入してディスク部の中間部位に発生したバリを除去する必要があり、工具の移動軌跡の制約を受けることから作業性が悪かった。特に、特許文献２のように窓部を覆う延出部が設けられている場合は、工具の移動軌跡が更に限られており、一層作業性が悪化していた。 Conventionally, burrs generated in the wheel material during the casting process are removed using a tool from the front side of the wheel material in the burr removing process after the casting process. However, in Patent Documents 1 and 2, it is necessary to insert a tool into the window portion to remove burrs generated in the intermediate portion of the disk portion, and the movement locus of the tool is restricted, resulting in poor workability. In particular, when an extension covering the window is provided as in Patent Document 2, the movement locus of the tool is further limited, further degrading workability.

本発明は、上記問題点に鑑みてなされたものであり、その目的は、バリ除去作業に関する制約を緩和し、車両用ホイールを能率よく製造する方法を提供することにある。 SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for efficiently manufacturing vehicle wheels by easing restrictions on deburring work.

上記課題を解決するために、本発明は、車両に取り付けられるハブ部（１１）と、略円筒形のリム部（１２）と、リム部の表側および前記ハブ部に接続されたディスク部（１３）とを備え、ディスク部に複数の窓部（１４）が形成された車両用ホイール（１０）の製造方法を提供する。本発明の第１の製造方法は、上型（２１）および下型（２２）を含む複数の金型を合わせることにより形成されたキャビティ（２４）に溶湯を充填してホイール素材（１００）を鋳造する鋳造工程と、複数の金型の合わせ面に対応する部位に生じたホイール素材のバリ（３０）を除去するバリ除去工程とを含む。そして、上型および下型は、鋳造工程で窓部に相当する部分（１１４）をホイール素材に形成する窓部合わせ面（２１２，２２２）を備え、窓部合わせ面のうちキャビティに接する縁（１９）の少なくとも一部がキャビティの最も表側に配置されるように形成されている。バリ除去工程において、キャビティの最も表側に配置された縁の少なくとも一部に生じたバリを、旋盤によりホイール素材の表側の表面を当該表面に沿った方向に加工することで除去する。 In order to solve the above problems, the present invention provides a hub portion (11) attached to a vehicle, a substantially cylindrical rim portion (12), and a disc portion (13) connected to the front side of the rim portion and the hub portion. ), and a method for manufacturing a vehicle wheel (10) having a plurality of windows (14) formed in a disk portion. In the first manufacturing method of the present invention, a cavity (24) formed by combining a plurality of molds including an upper mold (21) and a lower mold (22) is filled with molten metal to produce a wheel material (100). It includes a casting step of casting and a deburring step of removing burrs (30) of the wheel material generated at portions corresponding to mating surfaces of a plurality of molds. The upper die and the lower die have window mating surfaces (212, 222) for forming a portion (114) corresponding to the window in the wheel material in the casting process. 19) is formed so as to be arranged on the frontmost side of the cavity. In the burr removing step, burrs formed on at least a portion of the outermost edge of the cavity are removed by machining the front surface of the wheel material in a direction along the surface using a lathe.

本発明の第２の製造方法では、上型および下型は、窓部合わせ面のうちキャビティに接する縁の少なくとも一部がキャビティの表側寄りに配置されるように形成されている。バリ除去工程において、キャビティの表側寄りに配置された縁の少なくとも一部に生じたバリを、旋盤によりホイール素材の表側の表面を当該表面に沿った方向に加工することで除去する。 In the second manufacturing method of the present invention, the upper mold and the lower mold are formed such that at least a part of the edge of the window part mating surface that contacts the cavity is arranged near the front side of the cavity. In the burr removing step, burrs formed on at least a portion of the edge located near the front side of the cavity are removed by processing the front surface of the wheel material in a direction along the surface with a lathe.

好適には、ディスク部が、厚肉部（１３１）と、厚肉部の表側から窓部に張り出す薄肉部（１３２）とを含み、上型および下型は、縁の少なくとも一部が薄肉部に相当する部分（１１３２）の先端に配置されるように形成され、バリ除去工程において、薄肉部に相当する部分の先端に発生したバリを旋盤により除去する。 Preferably, the disk portion includes a thick portion (131) and a thin portion (132) projecting from the front side of the thick portion to the window portion, and the upper die and the lower die have thin edges at least partially. In the deburring step, burrs generated at the tip of the portion corresponding to the thin portion are removed by a lathe.

本発明では、窓部合わせ面のうちキャビティに接する縁をキャビティの最も表側に配置してホイール素材を鋳造する。この製造方法によると、キャビティの最も表側に配置された縁に生じたバリをホイール素材の表側から工具を使用して除去する際、工具の移動軌跡の制約を受けることがないので、作業性を向上させ容易にバリ除去ができる。また、窓部合わせ面のうちキャビティに接する縁をキャビティの表側寄りに配置するとともに、旋盤によりホイール素材の表側の表面を加工することでバリを除去する。この製造方法によると、旋盤を用いたホイール素材の表面加工をバリ除去工程に兼用できるため、従来の工具を使用した作業性の悪いバリ除去作業を無くすことができる。 In the present invention, the wheel material is cast with the edge of the window portion mating surface that is in contact with the cavity positioned on the frontmost side of the cavity. According to this manufacturing method, when using a tool to remove burrs formed on the outermost edge of the cavity from the front side of the wheel blank, there is no restriction on the tool's movement trajectory, so workability is improved. burr can be easily removed. In addition, the edge of the window mating surface, which is in contact with the cavity, is arranged closer to the front side of the cavity, and the front surface of the wheel material is machined with a lathe to remove burrs. According to this manufacturing method, surface machining of the wheel material using a lathe can also be used for the deburring process, so that the conventional deburring work using tools, which has poor workability, can be eliminated.

本発明の一実施形態を示す車両用ホイールを表側から見た斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view which looked at the wheel for vehicles which shows one Embodiment of this invention from the front side. 車両用ホイールを表側から見た正面図である。It is the front view which looked at the vehicle wheel from the front side. 車両用ホイールを裏側から見た斜視図である。It is the perspective view which looked at the wheel for vehicles from the back side. 車両用ホイールを裏側から見た背面図である。It is the back view which looked at the wheel for vehicles from the back side. 図２のＶ－Ｖ線に沿う断面図である。FIG. 3 is a cross-sectional view taken along line VV of FIG. 2; 車両用ホイールの製造方法を説明する金型の断面図である。FIG. 4 is a cross-sectional view of a mold for explaining a method of manufacturing a vehicle wheel; 図６のＶＩＩ－ＶＩＩ線に沿う断面図である。FIG. 7 is a cross-sectional view along line VII-VII of FIG. 6; バリ除去工程を説明するディスク部相当部の断面図である。It is sectional drawing of the disk part equivalent part explaining a burr removal process. 本発明の他の実施形態を示す車両用ホイールの正面図である。FIG. 4 is a front view of a vehicle wheel showing another embodiment of the present invention; 図９の車両用ホイールの製造方法を説明する図であって、図９のＸ－Ｘ線に沿う断面に対応するディスク部相当部の断面図である。FIG. 10 is a view for explaining the method of manufacturing the vehicle wheel of FIG. 9, and is a cross-sectional view of a portion corresponding to the disk portion corresponding to the cross section taken along line XX of FIG. 9;

（一実施形態）
以下、本発明の一実施形態を図面に基づいて説明する。本実施形態の製造方法は、図１～図５に示されるようなアルミニウム合金製の車両用ホイール１０の製造に適用される。車両用ホイール１０は、自動車の車軸（図示略）に取り付けられるハブ部１１と、タイヤが装着される円筒形のリム部１２と、リム部１２の表側およびハブ部１１に接続されたディスク部１３とを備えている。そして、ハブ部１１にハブ孔１１１とボルト孔１１２とが設けられ、ディスク部１３に複数（図示例では５つ）の窓部１４が形成されている。なお、本明細書において、車両用ホイール１０の「表側」とは、車両に取り付けられた状態で車体の外面に露出する側であり、「裏側」とは、車体の外面に露出しない側である。 (one embodiment)
An embodiment of the present invention will be described below with reference to the drawings. The production method of the present embodiment is applied to the production of an aluminum alloy vehicle wheel 10 as shown in FIGS. A vehicle wheel 10 includes a hub portion 11 attached to an axle (not shown) of an automobile, a cylindrical rim portion 12 on which a tire is mounted, and a disk portion 13 connected to the front side of the rim portion 12 and the hub portion 11. and A hub hole 111 and a bolt hole 112 are provided in the hub portion 11 , and a plurality of (five in the illustrated example) windows 14 are formed in the disk portion 13 . In this specification, the "front side" of the vehicle wheel 10 is the side exposed to the outer surface of the vehicle body when attached to the vehicle, and the "back side" is the side that is not exposed to the outer surface of the vehicle body. .

ディスク部１３は、ハブ部１１とリム部１２との間を放射状に延びる５つのスポーク部１３１と、各スポーク部１３１の表側面からホイール周方向（図２に１０２で示す方向）の両側に張り出す薄肉部１３２とからなり、ホイール周方向に隣接する２つの薄肉部１３２の間に窓部１４がホイール半径方向に長く開口している。そして、車両用ホイール１０を表側から見たとき（図１参照）、窓部１４によってディスク部１３の表側面１３０が５つの略三角形のセグメント１３Ａ～１３Ｅ（図２参照）に分割され、各セグメントの集合により車両用ホイール１０の意匠面１６が構成されている。 The disc portion 13 has five spoke portions 131 radially extending between the hub portion 11 and the rim portion 12, and stretches from the front surface of each spoke portion 131 to both sides in the wheel circumferential direction (the direction indicated by 102 in FIG. 2). A window portion 14 is long and open in the wheel radial direction between two thin wall portions 132 adjacent to each other in the wheel circumferential direction. When the vehicle wheel 10 is viewed from the front side (see FIG. 1), the front side surface 130 of the disc portion 13 is divided into five substantially triangular segments 13A to 13E (see FIG. 2) by the window portion 14, and each segment The design surface 16 of the vehicle wheel 10 is formed by a collection of the .

図５に示すように、ディスク部１３のスポーク部１３１は、車両用ホイール１０の軸線１０１が延びる方向（以下、ホイール軸線方向）へ相対的に厚く形成された厚肉部であり、薄肉部１３２がホイール軸線方向へ相対的に薄く形成されている。また、ホイール軸線方向において、薄肉部１３２の表側面（図５の下側の面）は、スポーク部１３１の表側面およびリム部１２の表側面と同じ高さに形成され、ディスク部１３の表側面１３０がホイール周方向に段差のない平滑面となっている。 As shown in FIG. 5 , the spoke portion 131 of the disk portion 13 is a thick portion formed relatively thick in the direction in which the axis 101 of the vehicle wheel 10 extends (hereinafter referred to as the wheel axis direction), and the thin portion 132 is formed relatively thin in the wheel axial direction. In addition, in the wheel axial direction, the front surface of the thin portion 132 (lower surface in FIG. 5) is formed at the same height as the front surface of the spoke portion 131 and the front surface of the rim portion 12 . The side surface 130 is a smooth surface without steps in the wheel circumferential direction.

次に、上記構成の車両用ホイール１０を鋳造する金型の構成について説明する。図６、図７に示すように、本実施形態の金型２０は、車両用ホイール１０の裏側面を成形する上型２１と、車両用ホイール１０の表側面を成形する下型２２と、車両用ホイール１０の外周面を成形する横型２３とを備えている。各金型２１，２２，２３は、相互に組み合わされた状態でキャビティ２４を形成し、キャビティ２４にアルミニウム合金からなる溶湯が充填される。なお、横型２３は複数の分割型で構成されている。 Next, the configuration of the mold for casting the vehicle wheel 10 configured as described above will be described. As shown in FIGS. 6 and 7, the mold 20 of the present embodiment includes an upper mold 21 for molding the back surface of the vehicle wheel 10, a lower mold 22 for molding the front surface of the vehicle wheel 10, a vehicle and a horizontal mold 23 for molding the outer peripheral surface of the wheel 10 . The molds 21, 22, 23 are combined to form a cavity 24, and the cavity 24 is filled with molten aluminum alloy. The horizontal die 23 is composed of a plurality of split dies.

下型２２には、ディスク部１３の表側面１３０と対応する部位にディスク部成形面２２１が設けられ、窓部１４と対応する部位に窓部合わせ面２２２が設けられている。上型２１には、ディスク部１３の裏側面１３５（図５参照）と対応する部位に裏側面成形部２１１が設けられ、窓部１４と対応する部位に窓部合わせ面２１２が設けられている。これらの窓部合わせ面２１２，２２２は、金型２０の合わせ面１８（図６，図７に全体的に示す）の一部を占めている。車両用ホイール１０の鋳造工程では、金型の熱変形や圧力に基づく弾性変形に起因して合わせ面１８に隙間が生じ、その隙間に溶湯が侵入して固化する。そのため鋳造で成形されるホイール素材１００（図８参照）には、合わせ面１８の縁１９（図７参照）つまりパーティングラインに沿ってバリ３０が生じる。 The lower die 22 is provided with a disk molding surface 221 at a portion corresponding to the front surface 130 of the disk 13 and a window mating surface 222 at a portion corresponding to the window 14 . The upper mold 21 is provided with a rear surface molding portion 211 at a portion corresponding to the rear surface 135 (see FIG. 5) of the disc portion 13, and a window portion mating surface 212 at a portion corresponding to the window portion 14. . These window mating surfaces 212, 222 occupy a portion of the mating surface 18 of the mold 20 (generally shown in FIGS. 6 and 7). In the casting process of the vehicle wheel 10, a gap is generated in the mating surface 18 due to thermal deformation of the mold and elastic deformation due to pressure, and the molten metal enters the gap and solidifies. As a result, the wheel blank 100 (see FIG. 8) formed by casting has burrs 30 along the edge 19 (see FIG. 7) of the mating surface 18, that is, along the parting line.

上型２１および下型２２は、窓部合わせ面２１２，２２２のうちキャビティ２４に接する縁１９の一部がキャビティ２４の最も表側に配置されるように形成されている。本実施形態では、上型２１および下型２２は、縁１９の一部が薄肉部相当部１１３２のホイール周方向の先端に配置され、その先端において縁１９がキャビティ２４の最も表側に配置されるように形成されている。 The upper die 21 and the lower die 22 are formed such that a portion of the edge 19 of the window portion mating surfaces 212 and 222 that contacts the cavity 24 is arranged on the frontmost side of the cavity 24 . In this embodiment, part of the edge 19 of the upper die 21 and the lower die 22 is arranged at the tip of the thin portion corresponding portion 1132 in the wheel circumferential direction, and the edge 19 is arranged on the frontmost side of the cavity 24 at the tip. is formed as

上型２１には、薄肉部１３２の周面と対応する部分に型抜き面２２３（図７参照）が設けられ、この型抜き面２２３によって薄肉部相当部１１３２の周面１３６（図８参照）が裏側面１３５に対して鈍角に成形される。 The upper die 21 is provided with a die-cutting surface 223 (see FIG. 7) at a portion corresponding to the peripheral surface of the thin-walled portion 132, and the die-cutting surface 223 forms a peripheral surface 136 (see FIG. 8) of the portion corresponding to the thin-walled portion 1132. is formed at an obtuse angle to the back surface 135 .

続いて、車両用ホイール１０の製造方法を主に図６、図７、図８に従って説明する。本実施形態の製造方法は、ホイール素材１００を鋳造する鋳造工程と、鋳造工程でホイール素材１００に生じたバリ３０を除去するバリ除去工程とからなる。鋳造工程では、金型２１，２２，２３を組み合わせてキャビティ２４を形成し、キャビティ２４に溶湯を充填し、所定の冷却時間が経過した後に、金型２１，２２，２３を離型し、ホイール素材１００を鋳造する。 Next, a method for manufacturing the vehicle wheel 10 will be described mainly with reference to FIGS. 6, 7 and 8. FIG. The manufacturing method of the present embodiment includes a casting process for casting the wheel material 100 and a deburring process for removing the burrs 30 generated on the wheel material 100 during the casting process. In the casting process, the molds 21, 22, and 23 are combined to form a cavity 24, the cavity 24 is filled with molten metal, and after a predetermined cooling time has passed, the molds 21, 22, and 23 are released, and the wheel A material 100 is cast.

この鋳造工程では、下型２２に設けられたディスク部成形面２２１によってホイール素材１００にディスク部相当部１１３の表側面１１３０が平滑に成形される。ディスク部相当部１１３には、スポーク部相当部１１３１（図８参照）の表側からホイール周方向に張り出す薄肉部相当部１１３２が含まれている。また、ディスク部１３の窓部１４に相当する部分には、上型２１および下型２２の窓部合わせ面２１２，２２２のうちキャビティ２４に接する縁１９の一部がキャビティ２４の最も表側に配置された状態で、窓部合わせ面２１２，２２２によってホイール素材１００に窓部相当部１１４が形成される。また、鋳造時に窓部合わせ面２１２，２２２に生じた隙間に侵入した溶湯が固化し、図８に示すようにバリ３０が薄肉部相当部１１３２の最も表側の周縁１１３３に沿って発生する。 In this casting process, the front surface 1130 of the portion corresponding to the disk portion 113 is smoothly formed on the wheel material 100 by the disk portion molding surface 221 provided on the lower die 22 . The disk portion equivalent portion 113 includes a thin portion equivalent portion 1132 projecting in the wheel circumferential direction from the front side of the spoke portion equivalent portion 1131 (see FIG. 8). Further, in the portion corresponding to the window portion 14 of the disk portion 13, a portion of the edge 19 of the window portion mating surfaces 212 and 222 of the upper mold 21 and the lower mold 22, which contacts the cavity 24, is arranged on the frontmost side of the cavity 24. In this state, a window-corresponding portion 114 is formed in the wheel blank 100 by the window-part mating surfaces 212 and 222 . Also, the molten metal entering the gaps formed between the window mating surfaces 212 and 222 during casting solidifies, and burrs 30 are generated along the outermost peripheral edge 1133 of the thin portion corresponding portion 1132 as shown in FIG.

ホイール素材１００が鋳造されると、続いてバリ除去工程が実施される。バリ除去工程では、旋盤（図示略）を使用し、ホイール素材１００を旋盤のチャックに把持し、ホイール軸線１０１の周りで回転させる。そして、ホイール素材１００の回転中に、旋盤に保持した工具３１をディスク部相当部１１３の表側面１１３０に対して移動させ、窓部合わせ面２１２，２２２の縁１９に対応する部位、つまり薄肉部相当部１１３２の先端であって薄肉部相当部１１３２の最も表側の周縁１１３３に発生したホイール素材１００のバリ３０をディスク部相当部１１３の表層部１１３４と共に除去する。図８の二点鎖線は、ホイール素材１００に対する工具３１の移動軌跡を示す。 After the wheel blank 100 is cast, a deburring process is performed. In the deburring process, a lathe (not shown) is used, and the wheel blank 100 is gripped by the chuck of the lathe and rotated around the wheel axis 101 . Then, while the wheel blank 100 is rotating, the tool 31 held by the lathe is moved with respect to the front side surface 1130 of the disk portion corresponding portion 113, and the portion corresponding to the edge 19 of the window portion mating surfaces 212 and 222, that is, the thin portion is removed. The burr 30 of the wheel material 100 generated at the outermost peripheral edge 1133 of the thin portion corresponding portion 1132 which is the tip of the corresponding portion 1132 is removed together with the surface layer portion 1134 of the disk portion corresponding portion 113 . A two-dot chain line in FIG. 8 indicates the locus of movement of the tool 31 with respect to the wheel blank 100 .

したがって、本実施形態の製造方法によれば、上型２１および下型２２は、窓部合わせ面２１２，２２２のうちキャビティ２４に接する縁１９の一部をキャビティ２４の最も表側に配置されるように形成されている。この製造方法によると、キャビティ２４の最も表側に配置された縁１９に生じたバリ３０をホイール素材１００の表側から旋盤に保持した工具３１を使用して除去する際、工具３１の移動軌跡の制約を受けることがない。そのため、作業性を向上させ容易にバリ除去ができる。 Therefore, according to the manufacturing method of the present embodiment, the upper die 21 and the lower die 22 are arranged such that a portion of the edge 19 of the window portion mating surfaces 212 and 222 that is in contact with the cavity 24 is arranged on the frontmost side of the cavity 24. is formed in According to this manufacturing method, when removing the burr 30 generated on the outermost edge 19 of the cavity 24 from the front side of the wheel material 100 using the tool 31 held on the lathe, the movement locus of the tool 31 is restricted. never receive Therefore, workability is improved and burrs can be easily removed.

特に、薄肉部相当部１１３２が窓部相当部１１４に張り出すように設けられているホイール素材１００において、本実施形態では、薄肉部相当部１１３２の先端に発生したバリ３０を旋盤により除去しているので、従来とは異なり、薄肉部相当部１１３２との接触を避けるために工具の移動軌跡を制限する必要がなく、バリ除去作業を容易に行うことができる。また、旋盤を用いてバリ除去と同時に表層部１１３４を切削してディスク部相当部１１３の表面加工を実施するため、従来と比較して製造工数を減らすことも可能である。 In particular, in the wheel material 100 in which the portion corresponding to the thin portion 1132 protrudes to the portion corresponding to the window portion 114, in the present embodiment, the burr 30 generated at the tip of the portion corresponding to the thin portion 1132 is removed by a lathe. Therefore, unlike the prior art, there is no need to limit the moving locus of the tool in order to avoid contact with the portion corresponding to the thin portion 1132, and the deburring operation can be easily performed. In addition, since the surface layer portion 1134 is cut by using a lathe and the surface processing of the portion corresponding to the disk portion 113 is performed at the same time as removing burrs, it is possible to reduce the manufacturing man-hours as compared with the conventional method.

（その他の実施形態）
本発明は、上記実施形態に限定されるものではなく、以下に例示するように、発明の趣旨を逸脱しない範囲で各部の形状や構成を適宜に変更して実施することができる。 (Other embodiments)
The present invention is not limited to the above-described embodiments, and as exemplified below, the shape and configuration of each part can be changed as appropriate without departing from the scope of the invention.

（１）上記実施形態では、ディスク部１３がスポーク部１３１と薄肉部１３２とで構成された車両用ホイール１０を例示した（図２参照）。これに対して、他の実施形態では、図９に示すように、ディスク部４３から薄肉部を省き、隣接する２本のスポーク部４３１の間に窓部４３２が形成された車両用ホイール１０を製造してもよい。この場合も、上型および下型が、窓部合わせ面のうちキャビティに接する縁の一部をキャビティの最も表側に配置されるように形成されることで、図１０に示すホイール素材１００において、ディスク部相当部１４３の表側面１４３０の周縁１４３２に発生したバリ３０を、ホイール素材１００の表側から工具３１を使用して除去する際、工具３１の移動軌跡の制約を受けることがない。 (1) In the above embodiment, the vehicle wheel 10 in which the disk portion 13 is composed of the spoke portion 131 and the thin portion 132 is exemplified (see FIG. 2). On the other hand, in another embodiment, as shown in FIG. 9, the vehicle wheel 10 in which the thin portion is omitted from the disk portion 43 and the window portion 432 is formed between two adjacent spoke portions 431 is provided. may be manufactured. In this case as well, the upper die and the lower die are formed such that a portion of the edge of the window mating surface that contacts the cavity is located on the frontmost side of the cavity, so that the wheel blank 100 shown in FIG. When the tool 31 is used to remove the burr 30 generated on the peripheral edge 1432 of the front side surface 1430 of the disk portion equivalent portion 143 from the front side of the wheel material 100, there is no restriction on the movement locus of the tool 31.

（２）他の実施形態では、バリ除去工程において、必ずしもバリをディスク部相当部の表層部と共に除去する必要はない。表層部を除去することなくバリだけを除去してもよい。 (2) In another embodiment, it is not always necessary to remove the burrs along with the surface layer portion corresponding to the disk portion in the burr removing step. Only the burr may be removed without removing the surface layer.

（３）上記実施形態では、リム部１２の表側面が窓部１４を除くディスク部１３の表側面１３０と同じ高さで形成されている（図１参照）。これに対して、他の実施形態では、リム部の表側面をディスク部の表側面よりも高く、または低く成形してもよい。この場合も、ホイール素材の回転中に、旋盤に保持した工具でリム部相当部の表側面とディスク部相当部の表側面とを連続的に切削することができる。 (3) In the above embodiment, the front side surface of the rim portion 12 is formed at the same height as the front side surface 130 of the disk portion 13 excluding the window portion 14 (see FIG. 1). In contrast, in other embodiments, the front surface of the rim portion may be molded higher or lower than the front surface of the disc portion. In this case also, the front surface corresponding to the rim portion and the front surface corresponding to the disk portion can be continuously cut by the tool held in the lathe while the wheel material is rotating.

（４）上記実施形態では、窓部合わせ面２１２，２２２のうちキャビティ２４に接する縁１９の一部がキャビティ２４の最も表側に配置されている（図７参照）。これに対して、他の実施形態では、縁の一部が必ずしもキャビティ２４の最も表側に配置されなくてもよい。すなわち、上型および下型は、縁の少なくとも一部がキャビティの表側寄りに配置されるように形成され、バリ除去工程において上記表側寄りに配置された縁の少なくとも一部に生じたバリを旋盤によりホイール素材の表側の表面を加工することで除去してもよい。それでも第１実施形態と同様の効果を奏する。 (4) In the above embodiment, a portion of the edge 19 of the window mating surfaces 212 and 222 that contacts the cavity 24 is arranged on the frontmost side of the cavity 24 (see FIG. 7). In contrast, in other embodiments, a portion of the edge may not necessarily be arranged on the frontmost side of the cavity 24 . That is, the upper mold and the lower mold are formed so that at least a part of the edge is arranged on the front side of the cavity, and the burrs generated on at least a part of the edge arranged on the front side in the deburring process are removed by a lathe. may be removed by processing the surface on the front side of the wheel material. Still, the same effects as in the first embodiment are obtained.

（５）他の実施形態において、ディスク部の窓部および薄肉部の個数ならびに形状を任意に変更することも可能である。 (5) In other embodiments, it is possible to arbitrarily change the number and shape of the window portions and thin portions of the disk portion.

１０・・・車両用ホイール、１００・・・ホイール素材、
１１３・・・ディスク部相当部、１１３０・・・ディスク部相当部の表側面、
１１４・・・窓部相当部（窓部に相当する部分）、１１３４・・・表層部、
１１・・・ハブ部、１２・・・リム部、１３・・・ディスク部、
１３０・・・ディスク部の表側面、１４・・・窓部、
１８・・・金型の合わせ面、１９・・・窓部合わせ面の縁、
２０・・・金型、２１・・・上型、
２１１・・・ディスク部成形面、２１２・・・上型の窓部合わせ面、
２２・・・下型、２２２・・・下型の窓部合わせ面、
２４・・・キャビティ、３０・・・バリ、３１・・・工具。 10... vehicle wheel, 100... wheel material,
113 ... disk portion corresponding portion, 1130 ... front surface of disk portion corresponding portion,
114 ... window portion corresponding portion (portion corresponding to window portion), 1134 ... surface layer portion,
11... hub part, 12... rim part, 13... disc part,
130... front surface of the disk portion, 14... window portion,
18 ... the mating surface of the mold, 19 ... the edge of the window portion mating surface,
20... mold, 21... upper mold,
211... disk portion molding surface, 212... upper mold window portion mating surface,
22... lower mold, 222... window portion mating surface of lower mold,
24... Cavity, 30... Burr, 31... Tool.

Claims (3)

車両に取り付けられるハブ部（１１）と、略円筒形のリム部（１２）と、前記リム部の表側および前記ハブ部に接続されたディスク部（１３）とを備え、前記ディスク部に複数の窓部（１４）が形成された車両用ホイール（１０）の製造方法であって、
上型（２１）および下型（２２）を含む複数の金型を合わせることにより形成されたキャビティ（２４）に溶湯を充填してホイール素材（１００）を鋳造する鋳造工程と、
前記複数の金型の合わせ面に対応する部位に生じた前記ホイール素材のバリ（３０）を除去するバリ除去工程と、を含み、
前記上型および前記下型は、前記鋳造工程で前記窓部に相当する部分（１１４）を前記ホイール素材に形成する窓部合わせ面（２１２，２２２）を備え、
前記上型および前記下型は、前記窓部合わせ面のうち前記キャビティに接する縁（１９）の少なくとも一部が前記キャビティの最も表側に配置されるように形成されており、
前記バリ除去工程において、前記キャビティの最も表側に配置された前記縁の少なくとも一部に生じたバリを、旋盤により前記ホイール素材の表側の表面を当該表面に沿った方向に加工することで除去することを特徴とする車両用ホイールの製造方法。 A hub portion (11) attached to a vehicle, a substantially cylindrical rim portion (12), and a disc portion (13) connected to the front side of the rim portion and the hub portion, wherein the disc portion has a plurality of A method for manufacturing a vehicle wheel (10) having a window (14), comprising:
A casting step of filling a cavity (24) formed by combining a plurality of molds including an upper mold (21) and a lower mold (22) with molten metal to cast a wheel material (100);
and a burr removing step of removing burrs (30) of the wheel material generated at portions corresponding to the mating surfaces of the plurality of molds,
The upper mold and the lower mold have window mating surfaces (212, 222) for forming a portion (114) corresponding to the window in the wheel material in the casting process,
The upper mold and the lower mold are formed such that at least a part of an edge (19) of the window part mating surface that contacts the cavity is arranged on the frontmost side of the cavity,
In the burr removing step, burrs formed on at least a portion of the edge arranged on the frontmost side of the cavity are removed by processing the front surface of the wheel material in a direction along the surface with a lathe. A method for manufacturing a vehicle wheel, characterized by: 車両に取り付けられるハブ部（１１）と、略円筒形のリム部（１２）と、前記リム部の表側および前記ハブ部に接続されたディスク部（１３）とを備え、前記ディスク部に複数の窓部（１４）が形成された車両用ホイール（１０）の製造方法であって、
上型（２１）および下型（２２）を含む複数の金型を合わせることにより形成されたキャビティ（２４）に溶湯を充填してホイール素材（１００）を鋳造する鋳造工程と、
前記複数の金型の合わせ面に対応する部位に生じた前記ホイール素材のバリ（３０）を除去するバリ除去工程と、を含み、
前記上型および前記下型は、前記鋳造工程で前記窓部に相当する部分（１１４）を前記ホイール素材に形成する窓部合わせ面（２１２，２２２）を備え、
前記上型および前記下型は、前記窓部合わせ面のうち前記キャビティに接する縁（１９）の少なくとも一部が前記キャビティの表側寄りに配置されるように形成されており、
前記バリ除去工程において、前記キャビティの表側寄りに配置された前記縁の少なくとも一部に生じたバリを、旋盤により前記ホイール素材の表側の表面を当該表面に沿った方向に加工することで除去することを特徴とする車両用ホイールの製造方法。 A hub portion (11) attached to a vehicle, a substantially cylindrical rim portion (12), and a disc portion (13) connected to the front side of the rim portion and the hub portion, wherein the disc portion has a plurality of A method for manufacturing a vehicle wheel (10) having a window (14), comprising:
A casting step of filling a cavity (24) formed by combining a plurality of molds including an upper mold (21) and a lower mold (22) with molten metal to cast a wheel material (100);
and a burr removing step of removing burrs (30) of the wheel material generated at portions corresponding to the mating surfaces of the plurality of molds,
The upper mold and the lower mold have window mating surfaces (212, 222) for forming a portion (114) corresponding to the window in the wheel material in the casting process,
The upper mold and the lower mold are formed such that at least a part of an edge (19) of the window part mating surface that contacts the cavity is arranged near the front side of the cavity,
In the burr removing step, burrs formed on at least a portion of the rim located near the front side of the cavity are removed by machining the front surface of the wheel material in a direction along the surface with a lathe. A method for manufacturing a vehicle wheel, characterized by: 前記車両用ホイールの前記ディスク部は、厚肉部（１３１）と、前記厚肉部から前記窓部に張り出す薄肉部（１３２）とを含み、
前記上型および前記下型は、前記縁の少なくとも一部が前記薄肉部に相当する部分（１１３２）の先端に配置されるように形成され、
前記バリ除去工程において、前記薄肉部に相当する部分の先端に発生したバリを旋盤により除去する請求項１または２に記載の車両用ホイールの製造方法。 The disc portion of the vehicle wheel includes a thick portion (131) and a thin portion (132) projecting from the thick portion to the window,
The upper mold and the lower mold are formed such that at least part of the edge is arranged at the tip of the portion (1132) corresponding to the thin portion,
3. The method of manufacturing a vehicle wheel according to claim 1, wherein, in said burr removing step, burrs generated at the tip of the portion corresponding to said thin portion are removed by a lathe.
JP2020006768A 2020-01-20 2020-01-20 Vehicle wheel manufacturing method Active JP7311437B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020006768A JP7311437B2 (en) 2020-01-20 2020-01-20 Vehicle wheel manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020006768A JP7311437B2 (en) 2020-01-20 2020-01-20 Vehicle wheel manufacturing method

Publications (2)

Publication Number Publication Date
JP2021112766A JP2021112766A (en) 2021-08-05
JP7311437B2 true JP7311437B2 (en) 2023-07-19

Family

ID=77076419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020006768A Active JP7311437B2 (en) 2020-01-20 2020-01-20 Vehicle wheel manufacturing method

Country Status (1)

Country Link
JP (1) JP7311437B2 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006001515A (en) 2004-06-21 2006-01-05 Topy Ind Ltd Method of manufacturing vehicle wheel
JP2007001576A (en) 2002-10-04 2007-01-11 Hitachi Metals Ltd Light alloy wheel and manufacturing method thereof
JP3130956U (en) 2006-09-19 2007-04-19 エスエイコーサン株式会社 Cast wheel mold for vehicle
JP2007106285A (en) 2005-10-14 2007-04-26 Topy Ind Ltd Manufacturing method of vehicle wheel
JP2007118053A (en) 2005-10-28 2007-05-17 Toyota Motor Corp Casting die
JP2008213610A (en) 2007-03-02 2008-09-18 Hitachi Metals Ltd Wheel for vehicle
JP2011020158A (en) 2009-07-17 2011-02-03 Honda Motor Co Ltd Method of manufacturing forming workpiece, deburring device, and die
JP2014040239A (en) 2013-09-17 2014-03-06 Hitachi Metals Ltd Wheel for vehicle
WO2015119273A1 (en) 2014-02-07 2015-08-13 日立金属株式会社 Vehicle wheel and method for producing same
JP2017109225A (en) 2015-12-17 2017-06-22 ジヤトコ株式会社 Die-casting mold, casting manufactured by using die-casting mold and manufacturing method of casting using die-casting mold

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007001576A (en) 2002-10-04 2007-01-11 Hitachi Metals Ltd Light alloy wheel and manufacturing method thereof
JP2006001515A (en) 2004-06-21 2006-01-05 Topy Ind Ltd Method of manufacturing vehicle wheel
JP2007106285A (en) 2005-10-14 2007-04-26 Topy Ind Ltd Manufacturing method of vehicle wheel
JP2007118053A (en) 2005-10-28 2007-05-17 Toyota Motor Corp Casting die
JP3130956U (en) 2006-09-19 2007-04-19 エスエイコーサン株式会社 Cast wheel mold for vehicle
JP2008213610A (en) 2007-03-02 2008-09-18 Hitachi Metals Ltd Wheel for vehicle
JP2011020158A (en) 2009-07-17 2011-02-03 Honda Motor Co Ltd Method of manufacturing forming workpiece, deburring device, and die
JP2014040239A (en) 2013-09-17 2014-03-06 Hitachi Metals Ltd Wheel for vehicle
WO2015119273A1 (en) 2014-02-07 2015-08-13 日立金属株式会社 Vehicle wheel and method for producing same
JP2017109225A (en) 2015-12-17 2017-06-22 ジヤトコ株式会社 Die-casting mold, casting manufactured by using die-casting mold and manufacturing method of casting using die-casting mold

Also Published As

Publication number Publication date
JP2021112766A (en) 2021-08-05

Similar Documents

Publication Publication Date Title
EP3172059B1 (en) Cast aluminum wheel
JP5850910B2 (en) Process for producing forged products made of light alloys and incorporating solid or thinned parts
JP5507312B2 (en) Wheel manufacturing method and wheel casting apparatus
JP6357096B2 (en) Wheel disc for automobile and manufacturing method thereof
EP1780048A1 (en) Wheel for motorcycle and production method thereof
JP7311437B2 (en) Vehicle wheel manufacturing method
JP3658885B2 (en) Steering rack and manufacturing method thereof
JP5494275B2 (en) Method for manufacturing bearing ring member
JP2001150089A (en) Manufacturing method for light alloy forged wheel and the wheel
EP4052922B1 (en) Cast wheel for straddled vehicle and method for producing the same
JP6807912B2 (en) How to manufacture vehicle wheels
JP2004223682A (en) Hub hole machining method of automotive wheel
WO2013187286A1 (en) Steering wheel and steering wheel production method
JP2000142007A (en) Light-weighted aluminum wheel and manufacture thereof
JP7012560B2 (en) Forging mold of rotor hub and manufacturing method of rotor hub
JP2008309181A (en) Caliper body for disc brakes, casting mould for its manufacture, and method of manufacturing caliper body for disc brake using its casting mould
JP3131822B2 (en) Finishing method for cast wheels
JP2000225432A (en) Production of disk for automobile wheel
JP2008074348A (en) Wheel for vehicle
JP2004017100A (en) Method for manufacturing vehicle wheel
JP2006055868A (en) Casting method and metallic mold for casting
JP2001304247A (en) Machining method for grooved bearing
JP2914144B2 (en) Manufacturing method of road wheel disc
JP2002273546A (en) Method for producing cast wheel in motor cycle
JP3372885B2 (en) Mold structure for casting

Legal Events

Date Code Title Description
RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20201001

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20220707

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20230418

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230509

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20230613

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20230704

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230706

R150 Certificate of patent or registration of utility model

Ref document number: 7311437

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150