JP4085095B2 - Ventilated brake disc manufacturing method - Google Patents

Ventilated brake disc manufacturing method Download PDF

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JP4085095B2
JP4085095B2 JP2005053292A JP2005053292A JP4085095B2 JP 4085095 B2 JP4085095 B2 JP 4085095B2 JP 2005053292 A JP2005053292 A JP 2005053292A JP 2005053292 A JP2005053292 A JP 2005053292A JP 4085095 B2 JP4085095 B2 JP 4085095B2
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秀樹 大高
治 田中
篤 近藤
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理研鍛造株式会社
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Description

本発明は、車両用制動装置として用いられるベンチレーテッド型ブレーキディスクの製造方法に関する。 The present invention relates to a manufacturing method of the ventilated type brake disk used as a vehicle braking system.

一般に、車両用制動装置はドラムブレーキとディスクブレーキに大別されるが、ドラムブレーキは密閉状態のドラム内周面をライニングにより摩擦するので、連続使用するとドラムの熱膨張によりライニングとの間隙が広がり、しかも摩擦熱による影響でライニング表面の摩擦力が低下するために制動効果が落ちるという問題がある。   In general, vehicle brake devices are roughly classified into drum brakes and disc brakes. Since drum brakes rub against the inner peripheral surface of a sealed drum with a lining, the gap between the drum and the lining increases due to thermal expansion of the drum when used continuously. Moreover, there is a problem that the braking effect is lowered because the frictional force on the lining surface is reduced by the influence of frictional heat.

このような摩擦熱による制動効果の低下はフェード現象と呼ばれるが、ディスクブレーキでは外気に晒されるディスクの外表面を摩擦パッドで挟み込む構造であるから、ドラムブレーキに比べるとフェード現象を生じ難いという利点がある。   Such a decrease in braking effect due to frictional heat is called a fade phenomenon, but the disc brake has a structure in which the outer surface of the disc exposed to the outside air is sandwiched between friction pads. There is.

特に、ベンチレーテッド型ブレーキディスクは、2枚のディスクを所定の間隙をあけて結合し、その相互間に通気路を形成した構造であり、その通気路内をディスクの遠心力によって外気が流通するようになっているので空冷効果が高く、フェード現象を生ずることが殆ど無い。   In particular, ventilated brake discs have a structure in which two discs are joined with a predetermined gap and an air passage is formed between them, and the outside air flows through the air passage by the centrifugal force of the disc. Therefore, the air-cooling effect is high and the fade phenomenon hardly occurs.

従来、係るベンチレーテッド型ブレーキディスクの多くは鋳造により一体成型されていたが、内部に通気路を有するベンチレーテッド型ブレーキディスクでは鋳型の製作が難しく、しかも偏肉に起因して回転アンバランスを惹起することがあった。   Conventionally, many of the ventilated type brake discs were integrally formed by casting. However, it is difficult to manufacture a mold with a ventilated type brake disc having an air passage inside, and rotation unbalance is caused by uneven thickness. It was sometimes caused.

そこで、2枚のディスクを別々に製作し、その両者に通気路を形成するフィン(凸条)を放射状に固着した後、フィンを設けた面を向かい合わせて両ディスクを補強プレートで結合するというものが提案されている(例えば、特許文献1)。   Therefore, two discs are manufactured separately, and fins (projections) that form air passages are fixed to both of them radially, and then the surfaces on which the fins are provided face each other and the discs are joined with a reinforcing plate. The thing is proposed (for example, patent document 1).

又、別々に製作したディスクの片面にそれぞれアリ溝を放射状に形成し、その両ディスクのアリ溝に通気路を形成するリブ(凸条)の両端を嵌め込み、これによって両ディスクを結合するというものが提案されている(例えば、特許文献2)。   Also, dovetail grooves are formed radially on one side of each separately manufactured disc, and both ends of ribs (projections) that form air passages are fitted into the dovetail grooves of both discs, thereby connecting both discs. Has been proposed (for example, Patent Document 2).

実公平7−14669号公報No. 7-14669

特開平8−226475号公報JP-A-8-226475

然し乍ら、特許文献1では一方のディスクに形成される凹溝に補強プレートの一端縁を挿入してこれを溶接した後、補強プレートの他端縁を他方のディスクに形成される凹溝に挿入してこれを溶接し、而して両ディスクを補強プレートを介して結合するようにしているので、両ディスクの結合時にはその両者を向かい合わせたまま溶接しなければならず、作業が困難になるという難点がある。   However, in Patent Document 1, after inserting one end edge of the reinforcing plate into the concave groove formed on one disk and welding it, the other end edge of the reinforcing plate is inserted into the concave groove formed on the other disk. Since these are welded together, and both discs are joined via the reinforcing plate, it is necessary to weld both discs facing each other when they are joined, which makes the operation difficult. There are difficulties.

更に、ディスクの材質や厚さによっては、補強プレートの溶接によりディスクが反ってしまう虞がある。   Furthermore, depending on the material and thickness of the disc, the disc may be warped by welding of the reinforcing plate.

又、特許文献2では、2つのディスクを向かい合わせて両者のアリ溝にリブの各一端部を嵌め込んだ後、係るリブの周辺に金属ろうを施し、これを加熱炉内で加熱することにより、ろう付するようにしていることから、ディスクの結合に時間を要するという難点がある。   Further, in Patent Document 2, after two disks are faced to each other and each end of the rib is fitted into the dovetail groove, a metal braze is applied to the periphery of the rib, and this is heated in a heating furnace. However, since it is brazed, it takes time to join the disks.

本発明は以上のような事情に鑑みて成されたものであり、その目的は2つのディスク溶接せずして容易かつ強固に結合する方法を提供することにある。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for easily and firmly coupling two disks without welding.

本発明は上記目的を達成するため、相対向する内面に、それぞれ通気路を形成する凸条が放射状に固設された第1ディスクと第2ディスクを所定の間隙をあけて対面状に結合して成るベンチレーテッド型ブレーキディスクを製造する方法であって、第1ディスクと第2ディスクを、その一方に固設される凸条の2つで他方に固設される凸条が2つずつ挟み込まれるようにして対面状に組み合わせた後、第1ディスクと第2ディスクの一方の凸条で挟まれる他方の凸条を押し広げて塑性変形させ、その変形部分を、該凸条を挟み込んだ一方の凸条の側面に形成される凹部に噛み込ませることにより、第1ディスクと第2ディスクの両者を一体に結合することを特徴とする。 The present invention is order to achieve the above object, the inner surface which faces, coupled to face shape of the first disk and the second disk ridges forming the vent path respectively fixed to the radially with a predetermined gap A ventilated type brake disc is manufactured, and the first disc and the second disc are provided with two ridges fixed on one side and two ridges fixed on the other side. After being combined face-to-face so as to be sandwiched one by one, the other convex strip sandwiched by one convex strip of the first disk and the second disk is spread and plastically deformed, and the deformed portion is sandwiched by the convex strip However, it is characterized in that both the first disk and the second disk are integrally coupled by being engaged with a recess formed on the side surface of one of the ridges.

又、相対向する内面に、それぞれ通気路を形成する凸条が放射状に固設された第1ディスクと第2ディスクを所定の間隙をあけて対面状に結合して成るベンチレーテッド型ブレーキディスクを製造する方法であって、第1ディスクと第2ディスクを、その一方に固設される凸条の2つで他方に固設される凸条が2つずつ挟み込まれるようにして対面状に組み合わせた後、第1ディスクと第2ディスクの一方の凸条で挟まれる他方の凸条を、その間に加圧工具を圧入することにより押し広げて塑性変形させ、その変形部分を、該凸条を挟み込んだ一方の凸条の側面に形成される凹部に噛み込ませることにより、第1ディスクと第2ディスクの両者を一体に結合することを特徴とする。   Also, a ventilated brake disc comprising a first disc and a second disc, which are radially fixed with ridges forming air passages on opposite inner surfaces, facing each other with a predetermined gap therebetween. The first disk and the second disk are face-to-face so that two protrusions fixed to one of the first disk and the second disk are sandwiched between two protrusions fixed to the other. After the combination, the other ridges sandwiched between the first ridges of the first disk and the second disk are spread and plastically deformed by press-fitting a pressurizing tool between them, and the deformed portions are The first disk and the second disk are integrally coupled by being engaged with a recess formed on the side surface of one of the ridges.

更に、相対向する内面に、それぞれ通気路を形成する凸条が放射状に固設された第1ディスクと第2ディスクを所定の間隙をあけて対面状に結合して成るベンチレーテッド型ブレーキディスクを製造する方法であって、第1ディスクと第2ディスクの何れか一方の各凸条を他方の各凸条より高さを大きく設定すると共に、相対的高さが大きく設定される方の各凸条は、それより高さが小さく設定される方の凸条により挟み込まれる2つを一組としてその高さ方向から圧縮荷重を作用させたとき高さが大きい同組の凸条同士にその間隔を広げる方向の曲げモーメントが発生するような先細り形状とし、しかして、第1ディスクと第2ディスクを、その一方に固設される高さの小さい凸条の2つでそれより高さの大きい凸条が2つずつ挟み込まれるようにして対面状に組み合わせた後、その第1ディスクと第2ディスクを対面方向に加圧することにより高さの大きい方の各凸条にその高さ方向から圧縮荷重を作用させ、これにより、高さが小さい方の凸条で挟み込まれる相対的高さの大きい2つ一組の凸条を、その間隔を広げる方向に発生する曲げモーメントにより押し広げて塑性変形させ、その変形部分を、該凸条を挟み込んだ高さが小さい方の凸条の側面に形成される凹部に噛み込ませることにより、第1ディスクと第2ディスクの両者を一体に結合することを特徴とする。   Furthermore, a ventilated brake disc comprising a first disc and a second disc, which are radially fixed with ridges that form air passages, on opposite inner surfaces, facing each other with a predetermined gap therebetween. Each of the first disk and the second disk, each of which is set to have a higher height than each of the other protrusions and the relative height is set to be larger. As for the ridges, when a compressive load is applied from the height direction of a pair of two ridges sandwiched between the ridges whose height is set smaller than that, the same pair of ridges having a large height are connected to each other. The taper shape is such that a bending moment in the direction of widening of the gap is generated. However, the first disk and the second disk are fixed to one of the two ridges with a small height, and the height is higher than that. Two large ridges are sandwiched Thus, after combining in a face-to-face manner, the first and second disks are pressed in the face-to-face direction to apply a compressive load from the height direction to each of the larger ridges, The pair of ridges having a relatively high height sandwiched between the ridges having a smaller height are spread and plastically deformed by a bending moment generated in the direction in which the interval is widened. It is characterized in that both the first disk and the second disk are integrally coupled by being engaged with a recess formed on the side surface of the ridge having the smaller height between which the ridge is sandwiched.

尚、上記の方法において、第1ディスクと第2ディスクを対面方向に加圧するとき、その両ディスクを一対の剛性プレートで挟み、その剛性プレートを介して第1ディスクと第2ディスクを対面方向に加圧することが好ましい。   In the above method, when the first disk and the second disk are pressed in the facing direction, the both disks are sandwiched between a pair of rigid plates, and the first disk and the second disk are interposed in the facing direction via the rigid plates. It is preferable to apply pressure.

本発明によれば、通気路を形成する凸条が第1ディスクと第2ディスクの結合に用いられることから部品点数を削減でき、しかも第1ディスクと第2ディスクを結合するために両ディスクに対して凸条を溶接するのでなく、両ディスクが少なくとも一方の凸条の塑性変形による両者の凸条同士の噛み合いにより結合されることから、結合工程が容易で生産性が大幅に向上する。   According to the present invention, since the protrusions forming the air passages are used for coupling the first disk and the second disk, the number of parts can be reduced, and the both disks can be coupled to couple the first disk and the second disk. On the other hand, since the ridges are not welded, both the disks are joined by the meshing of the two ridges by plastic deformation of at least one of the ridges, so that the joining process is easy and the productivity is greatly improved.

又、従来のように溶接結合によるディスクの反りが発生する虞がなく、高品質、高信頼性のベンチレーテッド型ブレーキディスクを提供できる。   Further, there is no possibility of warping of the disc due to welding connection as in the prior art, and a high-quality and highly reliable ventilated brake disc can be provided.

更に、一方のディスクに設けた凸条で他方の凸条の2つを挟み、これを押し広げて挟み込み側の凸条の凹部に噛み込ませるようにしていることから、第1ディスクと第2ディスクの両者を強固に結合してその離脱を防止できることは勿論、両ディスクの正逆の回転方向に対するガタツキも発生しない。   Further, since the two ridges are sandwiched between the ridges provided on one of the disks, and the two ridges are spread out to be engaged with the recesses of the ridges on the sandwiching side, the first disk and the second disk Of course, both discs can be firmly coupled to prevent their disengagement, and no backlash occurs in the forward and reverse rotation directions of both discs.

特に、請求項2の方法では、凸条の間に加圧工具を圧入することから、凸条の形状に拘らず、その塑性変形を適正に行うことができる。 In particular, in the method of claim 2 , since the pressurizing tool is press-fitted between the ridges, the plastic deformation can be appropriately performed regardless of the shape of the ridges.

又、請求項3の方法では、プレス機などを用いて凸条の塑性変形を効率よく行うことができる。特に、第1ディスクと第2ディスクの一方に設けられる凸条を他方よりも相対的高さを大きくしているので、第1ディスクと第2ディスクを対面方向に加圧することにより高さが大きい方の凸条にその高さ方向から圧縮荷重を作用させることができ、しかも高さが大きい方の各凸条は高さが小さい方の凸条により挟み込まれる2つを一組として、その高さ方向から圧縮荷重を作用させたとき高さが大きい同組の凸条同士にその間隔を広げる方向の曲げモーメントが発生するような先細り形状とされることから、第1ディスクと第2ディスクを対面方向に加圧することにより、高さの大きい2つ一組の凸条を間隔が広がる方向に塑性変形させて高さが小さい方の凸条と強固に噛み合わせることができる。 Moreover, in the method of Claim 3 , the plastic deformation of a protruding item | line can be performed efficiently using a press machine. In particular, since the relative height of the protrusion provided on one of the first disk and the second disk is larger than the other, the height is increased by pressing the first disk and the second disk in the facing direction. Compressive load can be applied to the ridges on the side from the height direction, and each of the ridges with the larger height is a set of two sandwiched between the ridges with the smaller height. The first disk and the second disk are tapered so that a bending moment is generated in the direction in which the interval between the protruding ridges having a large height is increased when a compressive load is applied in the vertical direction. By pressing in the facing direction, a pair of convex ridges having a large height can be plastically deformed in a direction in which the interval is widened, and the convex ridge having a smaller height can be firmly meshed.

加えて、請求項4の方法では、剛性プレートにより第1ディスクと第2ディスクに加圧力を均等に作用させて高さが大きい方の各凸条を一様に塑性変形させることができる。 In addition, in the method of claim 4 , it is possible to uniformly plastically deform each protrusion having a larger height by applying a pressure force uniformly to the first disk and the second disk by the rigid plate.

以下、図面に基づいて本発明を詳しく説明する。図1は、本発明に係るベンチレーテッド型ブレーキディスク(ロータディスク)を示した斜視分解図である。   Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing a ventilated brake disk (rotor disk) according to the present invention.

図1において、1,2はリング状のディスク(第1ディスク及び第2ディスク)であり、その両ディスク1,2はニッケルクロムモリブデン鋼のような耐熱性ならびに耐摩耗性に優れた金属材料から形成される。一方のディスク1の中心にはスリーブ1Aが一体に形成され、その部分に車軸連結具3が取り付けられる構成としてある。車軸連結具3は、図示せぬ車軸を通す筒部3Aと該筒部の一端外周に突設されるフランジ部3Bとを有し、筒部3Aはディスクのスリーブ1Aに嵌合状態で結合され、フランジ部3Bは車軸に設けられる図示せぬハブに対してボルト止めされる。   In FIG. 1, 1 and 2 are ring-shaped discs (first disc and second disc), and both discs 1 and 2 are made of a metal material having excellent heat resistance and wear resistance such as nickel chromium molybdenum steel. It is formed. A sleeve 1A is integrally formed at the center of one disk 1, and an axle connector 3 is attached to that portion. The axle connector 3 has a cylindrical portion 3A through which an axle shaft (not shown) passes and a flange portion 3B protruding from one end of the cylindrical portion, and the cylindrical portion 3A is coupled to the sleeve 1A of the disc in a fitted state. The flange portion 3B is bolted to a hub (not shown) provided on the axle.

一方、ディスク1,2の相対向する内面にはそれぞれ凸条11,21(仕切部材)が放射状に設けられる。それら凸条11,21はディスク1,2の間に後述する通気路を形成するものであり、本発明では係る凸条11,21が通気路形成のほか、ディスク1,2を結合する部材として利用される。   On the other hand, ridges 11 and 21 (partition members) are radially provided on the inner surfaces of the disks 1 and 2 that face each other. These ridges 11 and 21 form an air passage which will be described later between the disks 1 and 2. In the present invention, the ridges 11 and 21 are used as members for connecting the disks 1 and 2 in addition to the air passage formation. Used.

尚、凸条11,21は鍛造、鋳造、あるいは切削その他の機械加工によりディスク1,2と一体に形成されるが、それらを溶接などによってディスク1,2に後付けしてもよい。又、ディスク1と車軸連結具3は電子ビームやレーザなどを使った溶接、もしくは圧接溶接などにより結合されるが、これを鋳造などにより一体成型してもよい。   The ridges 11 and 21 are formed integrally with the disks 1 and 2 by forging, casting, cutting or other machining, but they may be retrofitted to the disks 1 and 2 by welding or the like. Further, the disk 1 and the axle connector 3 are coupled by welding using an electron beam or a laser, or pressure welding, but this may be integrally formed by casting or the like.

図2はディスク1の平面図であり、図3には図2におけるA−A拡大断面、図4には図3におけるB−B断面を示す。これらの図で明らかなように、本例においてディスク1には8つの凸条11が設けられ、それら凸条11は所定の夾角θ(本例において42度)を成すハの字状の2つ一組(11a,11b)にして、4組がディスク1の周方向に等間隔に設けられる。   2 is a plan view of the disk 1. FIG. 3 shows an AA enlarged section in FIG. 2, and FIG. 4 shows a BB section in FIG. As is apparent from these drawings, in this example, the disk 1 is provided with eight ridges 11, and these ridges 11 are formed in two C-shapes having a predetermined depression angle θ (42 degrees in this example). In one set (11a, 11b), four sets are provided at equal intervals in the circumferential direction of the disk 1.

又、各凸条11は外方(ディスク1の中心から半径方向)に向かって漸次幅広となる形態であり、各組の凸条11a,11bには向かい合う内側面に凹部12が形成される。係る凹部12は凸条11の長さ方向に沿って延びる溝形で、それらはディスク1に対する凸条11の付け根部分に形成される。   Each ridge 11 is gradually widened outward (in the radial direction from the center of the disk 1), and a concave portion 12 is formed on the inner surface facing each set of ridges 11a and 11b. Such recesses 12 have a groove shape extending along the length direction of the ridges 11, and they are formed at the base portion of the ridges 11 with respect to the disk 1.

図5はディスク2の平面図であり、図6には図5におけるC−C拡大断面、図7には図6におけるD−D断面を示す。これらの図で明らかなように、本例においてディスク2にも8つの凸条21が設けられ、それら凸条21は所定の夾角ψ(本例において42度)を成すハの字状の2つ一組(21a,21b)にして、4組がディスク2の周方向に等間隔に設けられる。   5 is a plan view of the disk 2. FIG. 6 is an enlarged cross-sectional view taken along the line CC in FIG. 5, and FIG. 7 is a cross-sectional view taken along the line DD in FIG. As is apparent from these drawings, in the present example, the disk 2 is also provided with eight ridges 21, and these ridges 21 are two C-shaped ones having a predetermined depression angle ψ (42 degrees in this example). In one set (21a, 21b), four sets are provided at equal intervals in the circumferential direction of the disk 2.

又、各凸条21は外方(ディスク2の中心から半径方向)に向かって漸次幅広となる形態であり、特にその幅は塑性加工を施し得るようディスク1側の凸条11に比較して狭くされる。又、各組の凸条21a,21bの外側面22はディスク2に対する直角面とされる。   Each ridge 21 is gradually widened outward (in the radial direction from the center of the disk 2). In particular, the width of the ridge 21 is larger than that of the ridge 11 on the disk 1 side so that plastic working can be performed. Narrowed. Further, the outer surface 22 of each pair of convex strips 21 a and 21 b is a right-angled surface with respect to the disk 2.

ここで、以上のようなディスクを用いたベンチレーテッド型ブレーキディスクの製造方法を説明すると、先ず図8(A)のように、2つのディスク1,2を凸条11,21が設けられた内面を向かい合わせて対面状に組み合わせる。尚、凸条11,21は、ディスク1,2を対面させたとき、一方のディスク1における各組の凸条11a,11bで他方のディスク2における各組の凸条21a,21bが挟み込まれる状態に設けられる。   Here, the manufacturing method of the ventilated type brake disc using the above disc will be explained. First, as shown in FIG. 8A, two discs 1 and 2 are provided with ridges 11 and 21, respectively. Combine face-to-face with the inner faces facing each other. When the disks 1 and 2 face each other, the ridges 11 and 21 are in a state in which the ridges 11a and 11b of each set on the one disk 1 are sandwiched between the ridges 21a and 21b of each set on the other disk 2. Is provided.

特に、図8(A)に示されるよう、ディスク1,2を対面状に組み合わせたとき、ディスク1側における凸条11a,11bの内側面に対し、ディスク2側における凸条21a,21bの外側面22が接触し、これによって両ディスク1,2の芯出し及び芯ずれ防止が行われるようにしてある。   In particular, as shown in FIG. 8 (A), when the disks 1 and 2 are combined in a face-to-face configuration, the outer surfaces of the ridges 21a and 21b on the disk 2 side with respect to the inner surfaces of the ridges 11a and 11b on the disk 1 side. The side surfaces 22 are in contact with each other so that both the disks 1 and 2 are prevented from being centered and misaligned.

しかして、ディスク1,2を対面させて同心状態に組み合わせたら、ディスク1,2の間で凸条21a,21bの間に加圧工具4を圧入する。係る加圧工具4は図9のような先細りの平板であり、その両側面下縁部には加圧用鍔部4Aが設けられる。   Thus, when the disks 1 and 2 are confronted and combined in a concentric state, the pressing tool 4 is press-fitted between the ridges 21a and 21b between the disks 1 and 2. The pressurizing tool 4 is a tapered flat plate as shown in FIG. 9, and pressurizing flanges 4 </ b> A are provided on the lower edge portions of both side surfaces.

これにより、ディスク1側における各組の凸条11a,11bで挟まれたディスク2側における各組の凸条21a,21bは、それぞれ図8(B)のように加圧工具4の鍔部4Aによる加圧力で外側に押し広げられつつ塑性変形される。そして、凸条21a,21bの先端変形部分は塑性流動によりこれを挟み込んだ凸条11a,11bの内側面凹部12に噛み込み、凸条11a,11bに対して圧着する。   As a result, each set of ridges 21a and 21b on the disk 2 side sandwiched between each set of ridges 11a and 11b on the disk 1 side, respectively, as shown in FIG. It is plastically deformed while being spread outward by the applied pressure. And the front-end | tip deformation | transformation part of the protruding item | line 21a, 21b bites into the inner surface recessed part 12 of the protruding item | line 11a, 11b which pinched | interposed this by plastic flow, and crimps | bonds it with the protruding item | line 11a, 11b.

このため、ディスク1,2は凸条11,21同士の噛み合いにより一体に結合され、その相互間には図10のように凸条11,21で区分された通気路5が形成される。   For this reason, the discs 1 and 2 are integrally coupled by meshing the ridges 11 and 21, and an air passage 5 divided by the ridges 11 and 21 is formed between them as shown in FIG.

尚、図11のように、加圧工具4は各凸条21a,21bの間に4方向から流体圧シリンダなどによって同時に圧入されるが、本発明はこれを要件とするものでなく、ディスク1,2を間欠回転させながら所定の位置で各凸条21a,21bの間に加圧工具4を順次圧入するようにしてもよい。又、加圧工具4による凸条21a,21bの塑性加工後、凸条11,21の圧接部分を溶接することも考えられる。   As shown in FIG. 11, the pressurizing tool 4 is simultaneously press-fitted between the projections 21a and 21b from four directions by a fluid pressure cylinder or the like. However, the present invention does not require this, and the disc 1 The pressurizing tool 4 may be sequentially press-fitted between the ridges 21a and 21b at predetermined positions while intermittently rotating the two. It is also conceivable to weld the press contact portions of the ridges 11 and 21 after the plastic working of the ridges 21a and 21b with the pressing tool 4.

ここで、本発明は上記例に限定されるものでなく、例えば図12のようにディスク1に90度間隔で4つの凸条11を設ける一方、ディスク2に凸条11(11a,11b)で挟まれる2つ一組の凸条21a,21bを設け、その各凸条21a,21bを押し広げて凸条11と噛み合わせるようにしてもよい。尚、本例では凸条11の両側面に凸条21a,21bを噛み込ませるための凹部が形成される。そして、本例においても溶接せずしてディスク1,2の離脱を防止できることは勿論、これを正逆の回転方向に対してガタツキなく強固に結合することができ、高品質、高信頼性のベンチレーテッド型ブレーキディスクを提供できる。   Here, the present invention is not limited to the above example. For example, as shown in FIG. 12, the disk 1 is provided with four ridges 11 at 90 degree intervals, while the disk 2 is provided with ridges 11 (11a, 11b). A pair of protruding ridges 21 a and 21 b that are sandwiched may be provided, and the protruding ridges 21 a and 21 b may be spread and meshed with the ridge 11. In this example, recesses for engaging the protrusions 21a and 21b are formed on both side surfaces of the protrusion 11. And in this example, the discs 1 and 2 can be prevented from being detached without welding, and of course, this can be firmly coupled to the forward and reverse rotation directions without rattling, resulting in high quality and high reliability. Ventilated brake discs can be provided.

又、本発明はディスク2側の凸条21を塑性変形させることに限らず、ディスク1側の凸条11を塑性変形させたり、両者の凸条11,21を塑性変形させたりするようにしてもよい。
(変更例)
次に、本発明に係る方法の変更例を説明する。図13から明らかなように、本例では一方のディスク1における各凸条11(11a,11b)に対し、他方のディスク2における各凸条21(21a,21b)の高さが大きく設定される。
Further, the present invention is a disk 2 side of the projections 21 is not limited to be plastically deformed, the projections 11 of the disk 1 side or is plastically deformed, both projections 11 and 21 squirrel so that obtained by plastic deformation May be.
(Example of change)
Next, a modified example of the method according to the present invention will be described. As is apparent from FIG. 13, in this example, the height of each ridge 21 (21a, 21b) in the other disk 2 is set larger than each ridge 11 (11a, 11b) in one disk 1. .

尚、上記例と同じく凸条11,21はディスク1,2の相対向する内面に放射状に固設されるが、本例では高さが小さい方の凸条の2つ(11a,11b)で高さが大きい方の凸条の2つ(21a,21b)が挟み込まれる構成とされる。   As in the above example, the ridges 11 and 21 are radially fixed to the inner surfaces facing each other of the disks 1 and 2, but in this example, the two ridges (11a and 11b) having the smaller height are used. Two ridges (21a, 21b) having a larger height are sandwiched.

特に、相対的高さが大きく設定される方の各凸条21は、それより高さが小さく設定される方の凸条11により挟み込まれる2つ(21a,21b)を一組として、その高さ方向から圧縮荷重を作用させたとき同組の凸条21a,21b同士にその間隔を広げる方向の曲げモーメントが発生するような先細り形状とされる。   In particular, each of the ridges 21 whose relative height is set larger is set with two (21a, 21b) sandwiched between the ridges 11 whose height is set smaller as a set. When a compressive load is applied from the vertical direction, the taper shape is such that a bending moment is generated in the direction in which the interval between the protruding strips 21a and 21b is increased.

詳しくは、凸条11a,11bで挟まれる2つ一組の凸条21a,21bは、その各先端が図13のように丸みを有して外側面側に片寄った状態に形成され、相手方のディスク1の内面に接触する双方の稜線部分t,tが互いにディスク2側における固定端(付け根部分)の中心線cよりも外側に位置するようにしてある(図14参照)。   Specifically, the pair of protruding ridges 21a and 21b sandwiched between the protruding ridges 11a and 11b is formed in a state in which each tip has a round shape as shown in FIG. Both ridge line portions t and t that contact the inner surface of the disk 1 are located outside the center line c of the fixed end (base portion) on the disk 2 side (see FIG. 14).

そして、本例によれば、上記のようなディスク1,2を、高さの小さい凸条の2つ(11a,11b)でそれより高さの大きい凸条21a,21bが2つずつ挟み込まれるようにして同心対面状に組み合わせた後、そのディスク1,2を対面方向に加圧することにより、高さの大きい方の各凸条21にその高さ方向から圧縮荷重を作用させる。   And according to this example, the above-mentioned discs 1 and 2 are sandwiched by two ridges 21a and 21b each having a height higher than two ridges (11a and 11b) having a smaller height. After the concentric face-to-face combination as described above, the disks 1 and 2 are pressurized in the face-to-face direction, whereby a compressive load is applied from the height direction to each protrusion 21 having the larger height.

これにより、高さが小さい方の凸条11a,11bで挟み込まれる相対的高さの大きい2つ一組の凸条21a,21bを、圧縮荷重の偏心によって互いの間隔を広げる方向に発生する曲げモーメントにより押し広げて塑性変形させ、その変形部分(先端部分)を図15のように高さが小さい方の凸条11a,11bの側面に形成される凹部12(図13参照)に噛み込ませる。尚、凹部12は上記例と同じく、凸条21a,21bを挟む2つ一組の凸条11a,11bの長さ方向(ディスク1の半径方向)に沿って向かい合う内側面の下部に形成される溝形であり、その凹部12には塑性変形された凸条21a,21bの先端部分が押し込まれる。   As a result, the pair of ridges 21a and 21b having a relatively large height sandwiched between the ridges 11a and 11b having a smaller height are bent in a direction in which the distance between the ridges 21a and 21b is increased by the eccentricity of the compression load. It is spread and plastically deformed by the moment, and the deformed portion (tip portion) is engaged with the concave portion 12 (see FIG. 13) formed on the side surface of the ridges 11a and 11b having a smaller height as shown in FIG. . As in the above example, the concave portion 12 is formed at the lower portion of the inner side surface facing along the length direction (radial direction of the disk 1) of the pair of convex strips 11a and 11b sandwiching the convex strips 21a and 21b. It has a groove shape, and the tip end portions of the projecting ridges 21 a and 21 b that are plastically deformed are pushed into the recess 12.

このため、ディスク1,2は、凸条11,21の噛み合いによって一体に結合され、その相互間には上記例と同じく凸条11,21で区分された通気路5が形成されることになる。   For this reason, the discs 1 and 2 are integrally coupled by the engagement of the ridges 11 and 21, and an air passage 5 partitioned by the ridges 11 and 21 is formed between them as in the above example. .

尚、ディスク1,2を対面方向に加圧するとき、図15のようにその両ディスク1,2を所定の厚さを有する一対の剛性プレート6A,6Bで挟み、一方の剛性プレート6Aをプレス機のベッド7上などに設置し、その状態で他方の剛性プレート6Bをプレス機のスライド8などにより上方から押圧することが好ましい。これによれば、剛性プレート6A,6Bを介してディスク1,2に加圧力を均等に作用させ、高さの大きい各凸条21を一様に塑性変形させることができる。ここに、プレス機のベッド7やスライド8を剛性プレートとしてもよい。   When pressurizing the disks 1 and 2 in the facing direction, as shown in FIG. 15, the disks 1 and 2 are sandwiched between a pair of rigid plates 6A and 6B having a predetermined thickness, and one of the rigid plates 6A is pressed. It is preferable that the other rigid plate 6B is pressed from above by the slide 8 of the press machine. According to this, it is possible to uniformly apply pressure to the disks 1 and 2 through the rigid plates 6A and 6B, and to uniformly plastically deform the ridges 21 having a large height. Here, the bed 7 or the slide 8 of the press machine may be a rigid plate.

本発明に係るベンチレーテッド型ブレーキディスクを示す斜視分解図1 is an exploded perspective view showing a ventilated brake disc according to the present invention. 第1ディスクの平面図Top view of the first disc 図2におけるA−A拡大断面図AA enlarged sectional view in FIG. 図3におけるB−B断面図BB sectional view in FIG. 第2ディスクの平面図Top view of the second disc 図5におけるC−C拡大断面図CC expanded sectional view in FIG. 図6におけるD−D断面図DD sectional view in FIG. 第1ディスクと第2ディスクとの結合工程を示す説明図Explanatory drawing which shows the coupling | bonding process of a 1st disk and a 2nd disk. 凸条の塑性変形に用いる加圧工具を示す斜視図Perspective view showing pressure tool used for plastic deformation of ridges 第1ディスクと第2ディスクが結合された状態を示す側面図Side view showing a state in which the first disk and the second disk are combined 加圧工具による塑性加工例を示す説明図Explanatory drawing showing an example of plastic working with a pressure tool ディスクに設けられる凸条の変更例を示す説明図Explanatory drawing which shows the example of a change of the protruding item | line provided in a disk 本発明に係る方法の変更例を示す説明図Explanatory drawing which shows the example of a change of the method which concerns on this invention 相対的高さの大きい凸条を有するディスクの部分平面図Partial plan view of a disk having ridges with a relatively large height 2つのディスクを対面方向から加圧した状態を示す説明図Explanatory drawing which shows the state which pressed two disks from the facing direction

符号の説明Explanation of symbols

1 ディスク(第1ディスク)
2 ディスク(第2ディスク)
11 凸条
21 凸条
12 凹部
4 加圧工具
5 通気路
6A,6B 剛性プレート
1 disc (first disc)
2 discs (second disc)
11 Convex ridge 21 Convex ridge 12 Concave 4 Pressure tool 5 Ventilation path 6A, 6B Rigid plate

Claims (4)

相対向する内面に、それぞれ通気路を形成する凸条が放射状に固設された第1ディスクと第2ディスクを所定の間隙をあけて対面状に結合して成るベンチレーテッド型ブレーキディスクを製造する方法であって、
第1ディスクと第2ディスクを、その一方に固設される凸条の2つで他方に固設される凸条が2つずつ挟み込まれるようにして対面状に組み合わせた後、第1ディスクと第2ディスクの一方の凸条で挟まれる他方の凸条を押し広げて塑性変形させ、その変形部分を、該凸条を挟み込んだ一方の凸条の側面に形成される凹部に噛み込ませることにより、第1ディスクと第2ディスクの両者を一体に結合することを特徴とするベンチレーテッド型ブレーキディスクの製造方法。
Manufactures a ventilated type brake disc that is formed by connecting the first and second discs, which are radially fixed to the opposite inner surfaces, with a ridge forming radial passages, facing each other with a predetermined gap. A way to
After the first disk and the second disk are combined in a face-to-face manner so that two ridges fixed on one side are sandwiched between two ridges fixed on the other, the first disk and The other ridge sandwiched by one ridge of the second disc is expanded and plastically deformed, and the deformed portion is engaged with a recess formed on the side surface of the one ridge sandwiching the ridge. Thus, the method of manufacturing a ventilated brake disc, wherein both the first disc and the second disc are joined together.
相対向する内面に、それぞれ通気路を形成する凸条が放射状に固設された第1ディスクと第2ディスクを所定の間隙をあけて対面状に結合して成るベンチレーテッド型ブレーキディスクを製造する方法であって、
第1ディスクと第2ディスクを、その一方に固設される凸条の2つで他方に固設される凸条が2つずつ挟み込まれるようにして対面状に組み合わせた後、第1ディスクと第2ディスクの一方の凸条で挟まれる他方の凸条を、その間に加圧工具を圧入することにより押し広げて塑性変形させ、その変形部分を、該凸条を挟み込んだ一方の凸条の側面に形成される凹部に噛み込ませることにより、第1ディスクと第2ディスクの両者を一体に結合することを特徴とするベンチレーテッド型ブレーキディスクの製造方法。
Manufactures a ventilated type brake disc that is formed by connecting the first and second discs, which are radially fixed to the opposite inner surfaces, with a ridge forming radial passages, facing each other with a predetermined gap. A way to
After the first disk and the second disk are combined in a face-to-face manner so that two ridges fixed on one side are sandwiched between two ridges fixed on the other, the first disk and The other ridge sandwiched by one ridge of the second disk is spread and plastically deformed by press-fitting a pressurizing tool in between, and the deformed portion of the one ridge sandwiching the ridge is inserted. A method for manufacturing a ventilated brake disc, wherein the first disc and the second disc are integrally coupled by being engaged with a recess formed on a side surface.
相対向する内面に、それぞれ通気路を形成する凸条が放射状に固設された第1ディスクと第2ディスクを所定の間隙をあけて対面状に結合して成るベンチレーテッド型ブレーキディスクを製造する方法であって、
第1ディスクと第2ディスクの何れか一方の各凸条を他方の各凸条より高さを大きく設定すると共に、
相対的高さが大きく設定される方の各凸条は、それより高さが小さく設定される方の凸条により挟み込まれる2つを一組としてその高さ方向から圧縮荷重を作用させたとき高さが大きい同組の凸条同士にその間隔を広げる方向の曲げモーメントが発生するような先細り形状とし、
しかして、第1ディスクと第2ディスクを、その一方に固設される高さの小さい凸条の2つでそれより高さの大きい凸条が2つずつ挟み込まれるようにして対面状に組み合わせた後、その第1ディスクと第2ディスクを対面方向に加圧することにより高さの大きい方の各凸条にその高さ方向から圧縮荷重を作用させ、
これにより、高さが小さい方の凸条で挟み込まれる相対的高さの大きい2つ一組の凸条を、その間隔を広げる方向に発生する曲げモーメントにより押し広げて塑性変形させ、その変形部分を、該凸条を挟み込んだ高さが小さい方の凸条の側面に形成される凹部に噛み込ませることにより、第1ディスクと第2ディスクの両者を一体に結合することを特徴とするベンチレーテッド型ブレーキディスクの製造方法。
Manufactures a ventilated type brake disc that is formed by connecting the first and second discs, which are radially fixed to the opposite inner surfaces, with a ridge forming radial passages, facing each other with a predetermined gap. A way to
While setting each ridge of either the 1st disk and the 2nd disk larger than each other ridge,
Each of the ridges whose relative height is set larger is when a compression load is applied from the height direction as a pair of two ridges sandwiched by the ridge whose height is set smaller than that A tapered shape that generates a bending moment in the direction of widening the interval between the same pair of ridges with a large height,
Thus, the first disk and the second disk are combined in a face-to-face manner so that two ridges with a small height and two ridges with a larger height are sandwiched between the first disk and the second disk. After that, by compressing the first disk and the second disk in the facing direction, a compressive load is applied from the height direction to each protrusion having a larger height,
As a result, the pair of ridges having a relatively large height sandwiched between the ridges having a smaller height are pushed and plastically deformed by a bending moment generated in the direction of widening the interval, and the deformed portion The bench is characterized in that both the first disk and the second disk are integrally coupled by engaging a recess into a recess formed on the side surface of the protrusion having a smaller height sandwiching the protrusion. A manufacturing method of a rated brake disc.
第1ディスクと第2ディスクを対面方向に加圧するとき、その両ディスクを一対の剛性プレートで挟み、その剛性プレートを介して第1ディスクと第2ディスクを対面方向に加圧することを特徴とする請求項3に記載したベンチレーテッド型ブレーキディスクの製造方法。 When pressing the first disk and the second disk in the facing direction, the both disks are sandwiched between a pair of rigid plates, and the first disk and the second disk are pressed in the facing direction via the rigid plates. A method for manufacturing a ventilated brake disk according to claim 3 .
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