JP2000202710A - Machining method and device for cam face of loading cam mechanism - Google Patents
Machining method and device for cam face of loading cam mechanismInfo
- Publication number
- JP2000202710A JP2000202710A JP11006431A JP643199A JP2000202710A JP 2000202710 A JP2000202710 A JP 2000202710A JP 11006431 A JP11006431 A JP 11006431A JP 643199 A JP643199 A JP 643199A JP 2000202710 A JP2000202710 A JP 2000202710A
- Authority
- JP
- Japan
- Prior art keywords
- cam
- cam surface
- pair
- input
- disks
- 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.)
- Pending
Links
Landscapes
- Friction Gearing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明に係るローディング
カム装置のカム面の加工方法及び加工装置は、例えば自
動車用変速機の変速ユニットとして利用されるトロイダ
ル型無段変速機に組み込む、ローディングカム装置のカ
ム面を加工する為に利用する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for machining a cam surface of a loading cam apparatus, which are incorporated in a toroidal-type continuously variable transmission used as a transmission unit of an automobile transmission, for example. Used to machine the cam surface.
【０００２】[0002]
【従来の技術】例えば自動車用変速機の変速ユニットと
して、図５に略示する様な、トロイダル型無段変速機を
使用する事が研究されている。このトロイダル型無段変
速機は、ハーフトロイダル型のもので、例えば実開昭６
２−７１４６５号公報に記載されている様に、入力軸１
の端部に入力側ディスク２を、出力軸３の端部に出力側
ディスク４を、それぞれ支持すると共に、傾斜角度の調
節を自在に設けた変位軸５、５に回転自在に支持したパ
ワーローラ６、６を、上記入力側、出力側両ディスク
２、４の間に挟持する事で構成している。2. Description of the Related Art The use of a toroidal type continuously variable transmission as schematically shown in FIG. 5 has been studied, for example, as a transmission unit of a transmission for an automobile. This toroidal-type continuously variable transmission is a half-toroidal type.
As described in JP-A-2-71465, the input shaft 1
A power roller that supports the input disk 2 at the end of the output shaft 3 and the output disk 4 at the end of the output shaft 3 and that is rotatably supported on displacement shafts 5 and 5 that are provided with an adjustable tilt angle. 6, 6 are sandwiched between the input side and output side disks 2, 4.
【０００３】入力側、出力側両ディスク２、４の互いに
対向する内側面２ａ、４ａは、それぞれ断面が円弧形の
凹面とし、各パワーローラ６、６の周面６ａ、６ａは、
球面状の凸面として、各パワーローラ６、６の周面６
ａ、６ａと、上記内側面２ａ、４ａとを当接させてい
る。又、上記入力軸１と入力側ディスク２との間には、
この入力側ディスク２を出力側ディスク４に向け軸方向
に押圧しつつ回転させる押圧装置である、ローディング
カム装置７を設けている。The inner surfaces 2a and 4a of the input and output disks 2 and 4 facing each other are concave surfaces having an arc-shaped cross section, and the peripheral surfaces 6a and 6a of the power rollers 6 and 6 are
As a spherical convex surface, the peripheral surface 6 of each of the power rollers 6, 6
a, 6a and the inner side surfaces 2a, 4a. Also, between the input shaft 1 and the input side disk 2,
A loading cam device 7, which is a pressing device for rotating the input disk 2 while pressing it in the axial direction toward the output disk 4, is provided.
【０００４】このローディングカム装置７は、上記入力
軸１に係合してこの入力軸１と共に回転するカム板８を
備える。このカム板８の片面（図５の右面）には第一の
カム面９を、円周方向に亙る凹凸として形成している。
又、上記入力側ディスク２の外側面（図５の左側面）に
第二のカム面１０を、例えば図６〜８に示す様な、円周
方向に亙る凹凸として形成している。図示の例では、凹
部の底部に断面円弧状に凹んだ湾曲部１３、１３を、凸
部の頂部に平坦部１４、１４を、それぞれ形成し、円周
方向に隣り合う湾曲部１３、１３と平坦部１４、１４と
を、傾斜部１５、１５により互いに連続させている。そ
して、この様な第二のカム面１０と上記第一のカム面９
との間に複数個のころ１２、１２を、円輪状の保持器１
１に転動自在に保持した状態で挟持している。The loading cam device 7 includes a cam plate 8 which engages with the input shaft 1 and rotates together with the input shaft 1. On one surface (the right surface in FIG. 5) of the cam plate 8, a first cam surface 9 is formed as irregularities extending in the circumferential direction.
Further, a second cam surface 10 is formed on the outer side surface (the left side surface in FIG. 5) of the input side disk 2 as irregularities extending in the circumferential direction as shown in FIGS. In the example shown in the figure, curved portions 13 and 13 concaved in an arc-shaped cross section are formed at the bottom of the concave portion, and flat portions 14 and 14 are formed at the top of the convex portion, respectively, and the curved portions 13 and 13 that are circumferentially adjacent to each other are formed. The flat portions 14 and 14 are connected to each other by the inclined portions 15 and 15. Then, such a second cam surface 10 and the first cam surface 9
And a plurality of rollers 12, 12 between the ring-shaped cage 1
1 while being held so as to be able to roll freely.
【０００５】尚、第一、第二のカム面９、１０の形状
は、基本的に同じである。言い換えれば、第一のカム面
９の形状も、図６〜８と同様である。又、図６〜７に示
した入力側ディスク２は、実際にトロイダル型無段変速
機に組み込む形状を表わしている為、中心部に貫通孔１
６を形成している。この様な貫通孔１６を有する入力側
ディスク２をトロイダル型無段変速機に組み込む状態に
就いては、特開平４−２９６５９号公報、同６−２２９
４５２号公報等に記載されている様に、従来から広く知
られており、本発明の要旨とも直接は関係しない為、説
明を省略する。The shapes of the first and second cam surfaces 9 and 10 are basically the same. In other words, the shape of the first cam surface 9 is the same as in FIGS. The input disk 2 shown in FIGS. 6 and 7 actually shows a shape to be incorporated in a toroidal type continuously variable transmission.
6 are formed. The state in which the input side disk 2 having such a through hole 16 is incorporated in a toroidal-type continuously variable transmission is described in JP-A-4-29659 and JP-A-6-229.
As described in Japanese Patent No. 452,452, etc., it has been widely known from the past and is not directly related to the gist of the present invention.
【０００６】この様に構成するローディングカム装置７
を組み込んだトロイダル型無段変速機の場合、上記入力
軸１によりカム板８を回転させると、上記第一のカム面
９によって複数のころ１２、１２が第二のカム面１０に
押し付けられる。この結果、上記入力側ディスク２が、
上記出力側ディスク４に向けて押圧され、両ディスク
２、４の内側面２ａ、４ａと上記各パワーローラ６、６
の周面６ａ、６ａとが強く当接する。又、各ころ１２、
１２と第二のカム面１０の凸部との押圧に基づいて、上
記入力側ディスク２が回転する。そして、入力側ディス
ク２の回転が上記各パワーローラ６、６を介して出力側
ディスク４に伝達され、この出力側ディスク４を固定し
た出力軸３が、上記入力軸１と逆方向に回転する。[0006] The loading cam device 7 constructed as described above.
When the cam plate 8 is rotated by the input shaft 1, the plurality of rollers 12, 12 are pressed against the second cam surface 10 by the first cam surface 9. As a result, the input side disk 2
Pressed toward the output side disk 4, the inner surfaces 2 a, 4 a of both disks 2, 4 and the respective power rollers 6, 6
Are strongly in contact with the peripheral surfaces 6a, 6a. In addition, each roller 12,
The input side disk 2 rotates based on the pressing of the projection 12 of the second cam surface 10 with the projection 12. Then, the rotation of the input side disk 2 is transmitted to the output side disk 4 via the power rollers 6, 6, and the output shaft 3 to which the output side disk 4 is fixed rotates in the opposite direction to the input shaft 1. .
【０００７】この様にして入力軸１から出力軸３に回転
運動を伝達する場合に於いて、図５に示す様に、各パワ
ーローラ６、６の周面６ａ、６ａが、入力側ディスク２
の内側面２ａの外周寄り部分と、出力側ディスク４の内
側面４ａの中心寄り部分とに、それぞれ当接する様に、
各変位軸５、５を傾斜させると、入力軸１と出力軸３と
の間で増速が行なわれる。反対に、各パワーローラ６、
６の周面６ａ、６ａが、入力側ディスク２の内側面２ａ
の中心寄り部分と、出力側ディスク４の内側面４ａの外
周寄り部分とに、それぞれ当接する様に、各変位軸５、
５を傾斜させると、入力軸１と出力軸３との間で減速が
行なわれる。各変位軸５、５の傾斜角度を中間にすれ
ば、入力軸１と出力軸３との間で、中間の変速比を得る
事ができる。In the case where the rotary motion is transmitted from the input shaft 1 to the output shaft 3 in this manner, as shown in FIG. 5, the peripheral surfaces 6a of the power rollers 6, 6
The inner side surface 2a of the output side disk 4 and the center side of the inner side surface 4a of the output side disk 4 are respectively brought into contact with each other.
When the displacement shafts 5 and 5 are tilted, the speed increase between the input shaft 1 and the output shaft 3 is performed. Conversely, each power roller 6,
6, the inner surface 2a of the input side disk 2
, And each of the displacement shafts 5,
When 5 is inclined, deceleration is performed between the input shaft 1 and the output shaft 3. By setting the inclination angles of the respective displacement shafts 5 and 5 to be intermediate, an intermediate speed ratio can be obtained between the input shaft 1 and the output shaft 3.
【０００８】上述の様なトロイダル型無段変速機のロー
ディングカム装置７の第一、第二のカム面９、１０を形
成する方法として、特開平８−６１４５２号公報には、
図９に示す様な方法が記載されている。この公報に記載
された従来方法の場合には、図示しない工作機械の主軸
により回転駆動されるチャック１７にカム板８（又は入
力側ディスク２）を保持固定する。そして、このカム板
８の片面に刃物１８を軸方向から突き当て、この刃物１
８を保持したホルダ１９を、上記チャック１７の回転に
同期して、軸方向に変位させ、第一のカム面９（又は第
二のカム面１０）の断面形状に合致する凹凸を形成す
る。そして、上記ホルダ１９を支持したヘッド２０をチ
ャック１７の直径方向に変位させる事により、全幅に亙
って凹凸を形成する。Japanese Patent Application Laid-Open No. 8-61452 discloses a method for forming the first and second cam surfaces 9 and 10 of the loading cam device 7 of the toroidal type continuously variable transmission as described above.
A method as shown in FIG. 9 is described. In the case of the conventional method described in this publication, the cam plate 8 (or the input-side disk 2) is held and fixed to a chuck 17 that is driven to rotate by a main shaft of a machine tool (not shown). Then, a blade 18 is abutted against one surface of the cam plate 8 from the axial direction, and the blade 1
The holder 19 holding 8 is displaced in the axial direction in synchronization with the rotation of the chuck 17 to form irregularities that match the cross-sectional shape of the first cam surface 9 (or the second cam surface 10). Then, the head 20 supporting the holder 19 is displaced in the diametric direction of the chuck 17 to form irregularities over the entire width.
【０００９】[0009]
【発明が解決しようとする課題】図９に示した従来方法
の場合、カム板８又は入力側ディスク２に第一のカム面
９又は第二のカム面１０を形成する作業を、これらカム
板８又は入力側ディスク２に就いて１個毎に行なう為、
加工時間を要する。この結果、これらカム板８及び入力
側ディスク２、更にはこれらカム板８及び入力側ディス
ク２を組み込んだトロイダル型無段変速機のコストが嵩
む。本発明のローディングカム装置のカム面の加工方法
及び加工装置は、この様な事情に鑑みて、カム板８、入
力側ディスク２等、カム面を有する部材の加工コストの
低減を図るべく発明したものである。In the case of the conventional method shown in FIG. 9, the operation of forming the first cam surface 9 or the second cam surface 10 on the cam plate 8 or the input side disk 2 is performed by using these cam plates. 8 or the input side disc 2
Processing time is required. As a result, the cost of the cam plate 8 and the input side disk 2 and the cost of the toroidal type continuously variable transmission incorporating the cam plate 8 and the input side disk 2 increase. In view of such circumstances, the method and apparatus for processing the cam surface of the loading cam device of the present invention were invented in order to reduce the processing cost of a member having a cam surface, such as the cam plate 8 and the input disk 2. Things.
【００１０】[0010]
【課題を解決する為の手段】本発明のローディングカム
装置のカム面の加工方法及び加工装置は、円周方向に亙
る凹凸として形成された第一のカム面と、円周方向に亙
る凹凸として形成され、上記第一のカム面に軸方向に亙
り対向する第二のカム面と、上記第一のカム面と第二の
カム面との間に装着された円輪状の保持器と、この保持
器に転動自在に保持された状態で、上記第一のカム面と
第二のカム面とに当接する複数のころとから成るローデ
ィングカム装置を構成する、上記第一、第二のカム面を
加工するものである。According to the present invention, there is provided a method and apparatus for processing a cam surface of a loading cam apparatus according to the present invention, wherein a first cam surface formed as a concave and convex in a circumferential direction and a concave and convex in a circumferential direction are formed. A second cam surface formed and axially opposed to the first cam surface; a ring-shaped retainer mounted between the first cam surface and the second cam surface; The first and second cams, which constitute a loading cam device comprising a plurality of rollers abutting on the first cam surface and the second cam surface while being held by the retainer so as to be freely rotatable. This is for processing the surface.
【００１１】特に、請求項１に記載したローディングカ
ム装置のカム面の加工方法は、それぞれが加工すべきカ
ム面を有する１対の部材を、このカム面を形成すべき軸
方向一端面同士を互いに対向させた状態で互いに同心に
配置する。これと共に、上記１対の部材の直径方向に亙
る軸を中心として回転する、外周面を加工面とした回転
工具の外周面に上記１対の部材の軸方向一端面を突き当
てる。そして、これら回転工具と１対の部材とを、この
１対の部材の軸方向に亙り相対変位させつつ、この１対
の部材を回転させる事により、この１対の部材の軸方向
一端面にそれぞれカム面を同時に形成する。In particular, in the method for machining a cam surface of a loading cam device according to the present invention, a pair of members each having a cam surface to be machined is formed by connecting one end surface in the axial direction where the cam surface is to be formed. They are arranged concentrically with each other in a state where they face each other. At the same time, one axial end surface of the pair of members is brought into contact with the outer peripheral surface of a rotary tool that rotates about an axis extending in the diameter direction of the pair of members and has an outer peripheral surface as a processing surface. By rotating the pair of members while relatively displacing the rotating tool and the pair of members in the axial direction of the pair of members, the one end of the pair of members in the axial direction is rotated. The respective cam surfaces are simultaneously formed.
【００１２】更に、請求項２に記載したローディングカ
ム装置のカム面の加工装置は、上記請求項１に記載した
加工方法を実施すべく、それぞれが加工すべきカム面を
有する１対の被加工物を、互いの中心軸同士を一致させ
た状態で、中心軸方向に亙る変位並びにこの中心軸を中
心とする回転自在に支持する少なくとも１個のホルダ
と、加工すべきカム面の直径方向に変位自在な回転工具
とを備える。According to a second aspect of the present invention, there is provided an apparatus for processing a cam surface of a loading cam device, the method comprising: a pair of workpieces each having a cam surface to be processed; At least one holder for rotatably supporting the object in the direction of the central axis and rotatably about the central axis in a state where the central axes thereof are coincident with each other, and in the diameter direction of the cam surface to be machined. A displaceable rotary tool.
【００１３】[0013]
【作用】上述の様に構成する本発明のローディングカム
装置のカム面の加工方法及び加工装置によれば、１対の
部材へのカム面の加工を同時に行なえるので、このカム
面の加工を能率良く短時間で行なえる。又、回転工具を
１対の部材同士の間で挟持するので、この回転工具が、
カム面を形成すべき面から退避する方向に弾性変形する
事を防止できる。この為、このカム面の加工精度を高く
できる。According to the method and apparatus for processing the cam surface of the loading cam device of the present invention having the above-described structure, the processing of the cam surface on a pair of members can be performed at the same time. It can be performed efficiently and in a short time. Also, since the rotating tool is sandwiched between a pair of members,
It is possible to prevent elastic deformation in the direction of retreating from the surface on which the cam surface is to be formed. Therefore, the processing accuracy of the cam surface can be increased.
【００１４】[0014]
【発明の実施の形態】図１〜２は、本発明の実施の形態
の第１例を示している。本例は、１対の入力側ディスク
２、２の外側面に第二のカム面１０を形成する事に関し
て、本発明を実施する場合を示している。マシニングセ
ンタのベッド２１の上面には、左右１対の主軸テーブル
２２ａ、２２ｂを、互いに同方向（図１〜２の左右方
向）に亙る水平移動自在に載置している。そして、精密
送りねじ機構２３ａ、２３ｂによりこの主軸テーブル２
２ａ、２２ｂを、互いに遠近動方向並びに同方向に駆動
自在としている。又、これら各主軸テーブル２２ａ、２
２ｂの上面に、それぞれ主軸２４ａ、２４ｂを回転自在
に設け、これら各主軸２４ａ、２４ｂの先端部に、チャ
ック２５ａ、２５ｂを固定している。そして、これら両
チャック２５ａ、２５ｂに、それぞれ上記第二のカム面
１０を形成すべき入力側ディスク２を、互いに同心に保
持している。1 and 2 show a first embodiment of the present invention. This example shows a case where the present invention is implemented with respect to forming the second cam surface 10 on the outer surfaces of the pair of input-side disks 2 and 2. On the upper surface of the bed 21 of the machining center, a pair of left and right spindle tables 22a and 22b are mounted so as to be horizontally movable in the same direction (left and right directions in FIGS. 1 and 2). Then, the spindle table 2 is moved by the precision feed screw mechanisms 23a and 23b.
2a and 22b can be driven in the directions of the distance movement and the same direction. In addition, each of these spindle tables 22a, 2
Main shafts 24a and 24b are rotatably provided on the upper surface of the main shaft 2b, and chucks 25a and 25b are fixed to tips of the main shafts 24a and 24b. The input discs 2 on which the second cam surfaces 10 are to be formed are held concentrically on the chucks 25a and 25b, respectively.
【００１５】又、上記ベッド２１の中央部上面に固設し
たコラム２６の前面に固定したスピンドルテーブル２７
には工具スピンドル２８を、昇降自在に支持している。
そして、上記コラム２６の前面上部に設けた精密送りね
じ機構２９により、上記工具スピンドル２８を昇降駆動
自在としている。又、この工具スピンドル２８の出力軸
に、回転工具３０を支持固定している。この回転工具３
０の中心軸は、上記各チャック２５ａ、２５ｂに保持し
た入力側ディスク２、２の直径方向に一致している。
又、上記回転工具３０の外周面は、円筒面（円筒面内に
納まる切削刃形状を含む）としている。A spindle table 27 fixed to the front of a column 26 fixed on the upper surface of the center of the bed 21
, A tool spindle 28 is supported so as to be able to move up and down.
The tool spindle 28 can be driven up and down by a precision feed screw mechanism 29 provided at the upper part of the front surface of the column 26. The rotary tool 30 is supported and fixed to the output shaft of the tool spindle 28. This rotary tool 3
The center axis of 0 coincides with the diameter direction of the input disks 2 and 2 held by the chucks 25a and 25b.
The outer peripheral surface of the rotary tool 30 is a cylindrical surface (including a cutting blade shape that fits within the cylindrical surface).
【００１６】上述の様なローディングカム装置のカム面
の加工装置により、上記各入力側ディスク２、２の外側
面に第二のカム面１０を形成する作業は、次の様にして
行なう。先ず、上記両チャック２５ａ、２５ｂにそれぞ
れ入力側ディスク２、２を保持固定する。尚、これら両
入力側ディスク２、２の外側面は、この入力側ディスク
２、２を鍛造加工する際に、上記第二のカム面１０に近
い形状としておく。次いで、上記両主軸２４ａ、２４ｂ
を図１〜２の矢印Ｃ1 、Ｃ2 方向に回転させる事によ
り、上記両入力側ディスク２、２の円周方向に亙る位相
を、所望通りに規制する。The operation of forming the second cam surface 10 on the outer surface of each of the input side disks 2 and 2 by the above-described processing device for the cam surface of the loading cam device is performed as follows. First, the input disks 2 are held and fixed to the chucks 25a and 25b, respectively. Note that the outer surfaces of the input side disks 2 and 2 are formed in a shape close to the second cam surface 10 when the input side disks 2 and 2 are forged. Next, the two main shafts 24a, 24b
The by rotating in the arrow C 1, C 2 direction in FIG. 1-2, the phase over the circumferential direction of the two input-side disks 2, to regulate as desired.
【００１７】図示の例では、一方の入力側ディスク２の
外側面に設ける第二のカム面１０の凸部（又は凹部）を
形成するのと同時に、他方の入力側ディスク２の外側面
に設ける第二のカム面１０の凹部（又は凸部）を形成す
る様にしている。尚、凸部の頂部には、予め平面加工さ
れた部分が残り、この部分が前述の図６〜８に示す様な
平坦部１４となる。In the illustrated example, the convex portion (or concave portion) of the second cam surface 10 provided on the outer surface of one input side disk 2 is formed, and at the same time, provided on the outer surface of the other input side disk 2. A concave portion (or a convex portion) of the second cam surface 10 is formed. In addition, a portion that has been planarized beforehand remains at the top of the convex portion, and this portion becomes the flat portion 14 as shown in FIGS.
【００１８】上記両入力側ディスク２、２の位相を上述
の様に規制し、これら両入力側ディスク２、２同士の間
に上記回転工具３０を進入させたならば、前記工具スピ
ンドル２８によりこの回転工具３０を回転させ、この回
転工具３０により、上記両入力側ディスク２、２の外側
面に、同時に切削加工を施す。この際、図示しない数値
制御装置（ＮＣ装置）からの指令により、前記主軸２４
ａ、２４ｂを、図１〜２に矢印Ｃ1 、Ｃ2 で示す様に緩
徐に回転させつつ、これら両主軸２４ａ、２４ｂを、図
１〜２に矢印Ｚ1 、Ｚ2 で示す様に水平移動させる。こ
れら矢印Ｃ1 、Ｃ2 方向への回転、並びに矢印Ｚ1 、Ｚ
2 方向への水平移動に基づき、上記回転工具３０を、上
記両入力側ディスク２、２の外側面に、上記第二のカム
面１０の形状に沿って倣わせる。この結果、これら両入
力側ディスク２、２の外側面にそれぞれ第二のカム面１
０が、同時に形成される。After the phases of the input disks 2 and 2 are regulated as described above, and the rotary tool 30 is inserted between the input disks 2 and 2, the tool spindle 28 controls the rotation of the rotary tool 30. The rotary tool 30 is rotated, and the outer surfaces of the input disks 2 and 2 are simultaneously cut by the rotary tool 30. At this time, the spindle 24 is controlled by a command from a numerical control device (NC device) (not shown).
a, 24b, and while it is rotating slowly as shown by arrows C 1, C 2 in FIGS. 1-2, the horizontal these both spindles 24a, a 24b, as shown by the arrow Z 1, Z 2 in FIGS. 1-2 Move. The rotation in the directions of the arrows C 1 and C 2 and the arrows Z 1 and Z
Based on the horizontal movement in the two directions, the rotary tool 30 is made to follow the outer surfaces of the input disks 2 and 2 along the shape of the second cam surface 10. As a result, the second cam surfaces 1 are provided on the outer surfaces of the input side disks 2 and 2 respectively.
0 are formed at the same time.
【００１９】この様に、本発明によれば、１対の入力側
ディスク２、２の外側面に第二のカム面１０、１０を形
成する加工を、同時に行なえる。この為、この第二のカ
ム面１０の加工を能率良く短時間で行なえる。又、上記
回転工具３０を１対の入力側ディスク２、２の外側面同
士の間で挟持するので、この回転工具３０が、これら両
入力側ディスク２、２の外側面から退避する方向に弾性
変形する事を防止できる。即ち、上記回転工具３０を、
切削加工すべき面に押し付けると、押し付け力に基づい
てこの回転工具３０が弾性変形し、上記ＮＣ装置の指定
位置と、実際に回転工具３０が存在する位置との間にず
れが生じる可能性がある。これに対して本発明によれ
ば、上記回転工具３０を、特に精度を要求する傾斜部１
５、１５の加工時に、断面の直径方向反対側から同じ押
圧力により挟持するので、この回転工具３０の位置を、
上記ＮＣ装置の指定位置通り正確にできる。この為、上
記各第二のカム面１０、１０（特に傾斜部１５、１５）
の加工精度を高くできる。As described above, according to the present invention, the processing for forming the second cam surfaces 10, 10 on the outer surfaces of the pair of input-side disks 2, 2 can be performed simultaneously. Therefore, the processing of the second cam surface 10 can be efficiently performed in a short time. Further, since the rotary tool 30 is sandwiched between the outer surfaces of the pair of input-side disks 2 and 2, the rotary tool 30 is elastically retracted from the outer surfaces of the input-side disks 2 and 2. Deformation can be prevented. That is, the rotating tool 30 is
When the rotary tool 30 is pressed against the surface to be cut, the rotary tool 30 is elastically deformed based on the pressing force, and there is a possibility that a shift may occur between the designated position of the NC device and the position where the rotary tool 30 actually exists. is there. On the other hand, according to the present invention, the rotary tool 30 is provided with the inclined portion 1 that requires particularly high accuracy.
At the time of machining 5 and 15, since it is clamped by the same pressing force from the diametrically opposite side of the cross section, the position of the rotary tool 30 is
Accurately as specified by the NC device. Therefore, each of the second cam surfaces 10, 10 (especially, the inclined portions 15, 15)
Processing accuracy can be increased.
【００２０】次に、図３は、本発明の実施の形態の第２
例を示している。本例の場合には、１個の主軸２４ｃの
端部に設けたチャック２５ｃにより、２個の入力側ディ
スク２、２を保持している。これら両入力側ディスク
２、２は、第二のカム面１０を形成すべき外側面同士を
対向させた状態で、円周方向に亙る位相を上述した第１
例の場合と同様に規制している。又、上記両入力側ディ
スク２、２の外側面中央部同士の間には、円筒状のスペ
ーサ３１を挟持して、これら両入力側ディスク２、２の
外側面同士の間隔を所望値に規制している。更に、これ
ら両入力側ディスク２、２及びスペーサ３１を挿通した
ボルト３２とナット３３との螺合・緊締に基づき、上記
両入力側ディスク２、２同士を非分離に結合している。
この状態で、これら両入力側ディスク２、２の外側面同
士の間隔は、回転工具３０の外径との関係で、所望の寸
法・形状を有するカム面が形成される様に規制してい
る。Next, FIG. 3 shows a second embodiment of the present invention.
An example is shown. In the case of this example, two input-side disks 2, 2 are held by a chuck 25c provided at an end of one main shaft 24c. The two input-side disks 2, 2 have the above-described first phase in the circumferential direction in a state where the outer surfaces on which the second cam surface 10 is to be formed are opposed to each other.
It is regulated as in the case of the example. A cylindrical spacer 31 is sandwiched between the central portions of the outer surfaces of the input disks 2 and 2 to regulate the distance between the outer surfaces of the input disks 2 and 2 to a desired value. are doing. Furthermore, the input disks 2 and 2 are non-separably connected based on the screwing and tightening of the bolt 32 and the nut 33 through which the input disks 2 and 2 and the spacer 31 are inserted.
In this state, the distance between the outer surfaces of the input disks 2 and 2 is regulated so that a cam surface having a desired size and shape is formed in relation to the outer diameter of the rotary tool 30. .
【００２１】本例の場合、上記両ディスク２、２の外側
面にそれぞれ第二のカム面１０を形成するには、先ず、
上記回転工具３０を、これら両ディスク２、２の外側面
同士の間に挿入する。この挿入作業は、この回転工具３
０をこれら両ディスク２、２の直径方向内方に向け変位
させつつ、これら両ディスク２、２の外側面の一部を切
削しつつ行なう。この様にして上記回転工具３０を、上
記両ディスク２、２の外側面同士の間に挿入したなら
ば、上記主軸２４ｃを、図３に矢印Ｃ1 で示す様に緩徐
に回転させつつ、この主軸２４ｃを、図３に矢印Ｚ1 で
示す様に水平移動させる。これら矢印Ｃ1 方向への回
転、並びに矢印Ｚ1 方向への水平移動に基づき、上記回
転工具３０を、上記両入力側ディスク２、２の外側面
に、上記第二のカム面１０の形状に沿って倣わせる。こ
の結果、これら両入力側ディスク２、２の外側面にそれ
ぞれ第二のカム面１０が、同時に形成される。In the case of this embodiment, in order to form the second cam surfaces 10 on the outer surfaces of the two disks 2, 2, first,
The rotary tool 30 is inserted between the outer surfaces of the disks 2 and 2. This insertion work is performed by the rotary tool 3
0 is displaced inward in the diametrical direction of the disks 2 and 2 while cutting a part of the outer surfaces of the disks 2 and 2. The rotary tool 30 in this manner, if inserted between the outer surfaces of the two discs 2, 2, the spindle 24c, while rotating slowly as shown by the arrow C 1 in FIG. 3, this the spindle 24c, is moved horizontally as indicated by arrow Z 1 in FIG. Based on the rotation in the direction of the arrow C 1 and the horizontal movement in the direction of the arrow Z 1 , the rotary tool 30 is placed on the outer surfaces of the input disks 2, 2 in the shape of the second cam surface 10. Follow along. As a result, the second cam surfaces 10 are simultaneously formed on the outer surfaces of both input side disks 2, 2.
【００２２】尚、図示の各例の場合には、１対の入力側
ディスク２、２の外側面に形成する第二のカム面１０、
１０の位相を半ピッチ分ずらせている。又、同時にカム
面を加工する１対の部材は、図１〜３に示した各例の様
に１対の入力側ディスク２、２に限定するものではな
い。例えば、１対のカム板８（図５参照）であっても良
いし、図４に示した第３例の様に、入力側ディスク２と
カム板８との組み合わせであっても良い。更には、回転
工具３０は、切削工具に限定するものではなく、研削砥
石であっても良い。In each of the illustrated examples, the second cam surfaces 10 formed on the outer surfaces of the pair of input-side disks 2 and 2,
10 phases are shifted by a half pitch. Further, the pair of members for simultaneously processing the cam surface is not limited to the pair of input side disks 2 and 2 as in each example shown in FIGS. For example, a pair of cam plates 8 (see FIG. 5) may be used, or a combination of the input side disk 2 and the cam plate 8 as in the third example shown in FIG. Furthermore, the rotary tool 30 is not limited to a cutting tool, but may be a grinding wheel.
【００２３】[0023]
【発明の効果】本発明のローディングカム装置のカム面
の加工方法及び加工装置は、以上に述べた通り構成され
作用するので、ローディングカム装置を構成するカム面
の加工を短時間で、しかも精度良く行なう事ができる。
この結果、トロイダル型無段変速機等、ローディングカ
ム装置を組み込んだ機械装置の高性能化並びに低廉化を
図れる。The method and apparatus for processing a cam surface of a loading cam device according to the present invention are constructed and operated as described above, so that the processing of the cam surface constituting the loading cam device can be performed in a short time and with high accuracy. Can do well.
As a result, it is possible to achieve higher performance and lower cost of a mechanical device incorporating a loading cam device, such as a toroidal type continuously variable transmission.
【図１】本発明の実施の形態の第１例を示す、加工装置
の全体構成を示す略正面図。FIG. 1 is a schematic front view illustrating a first example of an embodiment of the present invention and illustrating an overall configuration of a processing apparatus.
【図２】図１のＡ部拡大図。FIG. 2 is an enlarged view of a portion A in FIG.
【図３】本発明の実施の形態の第２例を示す、図２と同
様の図。FIG. 3 is a view similar to FIG. 2, showing a second example of the embodiment of the present invention;
【図４】同第３例を示す、図２と同様の図。FIG. 4 is a view similar to FIG. 2, showing the third example.
【図５】ローディングカム装置を組み込んだトロイダル
型無段変速機の基本構成を、最大増速時の状態で示す側
面図。FIG. 5 is a side view showing a basic configuration of a toroidal-type continuously variable transmission incorporating a loading cam device in a state at the time of maximum speed increase.
【図６】入力側ディスクの外側面に形成したカム面を、
図５の左方から見た状態で示す図。FIG. 6 shows a cam surface formed on the outer surface of the input side disc,
The figure shown in the state seen from the left of FIG.
【図７】図６のＢ−Ｂ断面図。FIG. 7 is a sectional view taken along line BB of FIG. 6;
【図８】カム面の形状を示す、部分展開図。FIG. 8 is a partial development view showing a shape of a cam surface.
【図９】カム面を形成する為の従来方法の１例を示す斜
視図。FIG. 9 is a perspective view showing an example of a conventional method for forming a cam surface.
１ 入力軸 ２ 入力側ディスク ２ａ 内側面 ３ 出力軸 ４ 出力側ディスク ４ａ 内側面 ５ 変位軸 ６ パワーローラ ６ａ 周面 ７ ローディングカム装置 ８ カム板 ９ 第一のカム面 １０ 第二のカム面 １１ 保持器 １２ ころ １３ 湾曲部 １４ 平坦部 １５ 傾斜部 １６ 貫通孔 １７ チャック １８ 刃物 １９ ホルダ ２０ ヘッド ２１ ベッド ２２ａ、２２ｂ 主軸テーブル ２３ａ、２３ｂ 精密送りねじ機構 ２４ａ、２４ｂ、２４ｃ 主軸 ２５ａ、２５ｂ、２５ｃ チャック ２６ コラム ２７ スピンドルテーブル ２８ 工具スピンドル ２９ 精密送りねじ機構 ３０ 回転工具 ３１ スぺーサ ３２ ボルト ３３ ナット DESCRIPTION OF SYMBOLS 1 Input shaft 2 Input side disk 2a Inner side 3 Output shaft 4 Output side disk 4a Inner side 5 Displacement axis 6 Power roller 6a Peripheral surface 7 Loading cam device 8 Cam plate 9 First cam surface 10 Second cam surface 11 Holding Container 12 Roller 13 Curved portion 14 Flat portion 15 Inclined portion 16 Through hole 17 Chuck 18 Cutting tool 19 Holder 20 Head 21 Bed 22a, 22b Spindle table 23a, 23b Precision feed screw mechanism 24a, 24b, 24c Spindle 25a, 25b, 25c Chuck 26 Column 27 Spindle table 28 Tool spindle 29 Precision feed screw mechanism 30 Rotary tool 31 Spacer 32 Bolt 33 Nut
───────────────────────────────────────────────────── フロントページの続き (72)発明者 横井 幸一 東京都大田区北糀谷２−８−３ 株式会社 東京精密器具製作所内 Ｆターム(参考） 3J051 AA03 BA03 BE09 ED20 FA02 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Koichi Yokoi 2-8-3 Kitajojiya, Ota-ku, Tokyo F-term in Tokyo Precision Instruments Co., Ltd. (reference) 3J051 AA03 BA03 BE09 ED20 FA02
Claims (2)
一のカム面と、円周方向に亙る凹凸として形成され、上
記第一のカム面に軸方向に亙り対向する第二のカム面
と、上記第一のカム面と第二のカム面との間に装着され
た円輪状の保持器と、この保持器に転動自在に保持され
た状態で、上記第一のカム面と第二のカム面とに当接す
る複数のころとから成るローディングカム装置を構成す
る、上記第一、第二のカム面を加工する加工方法であっ
て、それぞれが加工すべきカム面を有する１対の部材
を、このカム面を形成すべき軸方向一端面同士を互いに
対向させた状態で互いに同心に配置すると共に、上記１
対の部材の直径方向に亙る軸を中心として回転する、外
周面を加工面とした回転工具の外周面に上記１対の部材
の軸方向一端面を突き当て、これら回転工具と１対の部
材とを、この１対の部材の軸方向に亙り相対変位させつ
つ、この１対の部材を回転させる事により、この１対の
部材の軸方向一端面にそれぞれカム面を同時に形成す
る、ローディングカム装置のカム面の加工方法。1. A first cam surface formed as circumferential irregularities and a second cam surface formed as circumferential irregularities and axially opposed to the first cam surface. And a ring-shaped retainer mounted between the first cam surface and the second cam surface; and the first cam surface and the second retainer rotatably held by the retainer. A processing method for processing the first and second cam surfaces, which constitutes a loading cam device including a plurality of rollers abutting on a second cam surface, wherein each of the first and second cam surfaces has a cam surface to be processed. Are arranged concentrically with one end face in the axial direction on which the cam surface is to be formed facing each other.
One end in the axial direction of the pair of members abuts against the outer peripheral surface of a rotating tool that rotates about an axis extending in the diameter direction of the pair of members and has an outer peripheral surface as a processing surface. By rotating the pair of members while relatively displacing the pair of members in the axial direction of the pair of members, a loading cam is simultaneously formed on one end surface in the axial direction of the pair of members. A method for processing the cam surface of the device.
為のローディングカム装置のカム面の加工装置であっ
て、それぞれが加工すべきカム面を有する１対の被加工
物を、互いの中心軸同士を一致させた状態で、中心軸方
向に亙る変位並びにこの中心軸を中心とする回転自在に
支持する少なくとも１個のホルダと、加工すべきカム面
の直径方向に変位自在な回転工具とを備えたローディン
グカム装置のカム面の加工装置。2. A processing device for a cam surface of a loading cam device for carrying out the processing method according to claim 1, wherein a pair of workpieces each having a cam surface to be processed are placed on each other. At least one holder rotatably supporting the center axis in a state where the center axes are aligned with each other and rotatably supporting the center axis, and a rotary tool capable of being displaced in the diameter direction of a cam surface to be machined. A processing device for a cam surface of a loading cam device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11006431A JP2000202710A (en) | 1999-01-13 | 1999-01-13 | Machining method and device for cam face of loading cam mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11006431A JP2000202710A (en) | 1999-01-13 | 1999-01-13 | Machining method and device for cam face of loading cam mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000202710A true JP2000202710A (en) | 2000-07-25 |
Family
ID=11638216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11006431A Pending JP2000202710A (en) | 1999-01-13 | 1999-01-13 | Machining method and device for cam face of loading cam mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000202710A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6450916B2 (en) | 2000-05-25 | 2002-09-17 | Nsk Ltd. | Cam disc of loading cam mechanism in toroidal type continuously variable transmission and manufacturing method therefor |
| KR20240007478A (en) * | 2022-07-08 | 2024-01-16 | 김현범 | Structure Of Top And Bottom Cam And Method For Manufacturing The Same |
-
1999
- 1999-01-13 JP JP11006431A patent/JP2000202710A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6450916B2 (en) | 2000-05-25 | 2002-09-17 | Nsk Ltd. | Cam disc of loading cam mechanism in toroidal type continuously variable transmission and manufacturing method therefor |
| KR20240007478A (en) * | 2022-07-08 | 2024-01-16 | 김현범 | Structure Of Top And Bottom Cam And Method For Manufacturing The Same |
| KR102644496B1 (en) | 2022-07-08 | 2024-03-07 | 김홍석 | Structure Of Top And Bottom Cam And Method For Manufacturing The Same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101573992B1 (en) | Superfinishing machine, superfinishing method and outer ring of bearing with superfinished raceway surface | |
| EP0791147B1 (en) | Eccentric gear | |
| JP4164680B2 (en) | Toroidal type continuously variable transmission disk processing method | |
| JP2000202710A (en) | Machining method and device for cam face of loading cam mechanism | |
| JP3849404B2 (en) | Loading cam plate for toroidal type continuously variable transmission | |
| US7468015B2 (en) | Method for manufacturing a variator component of continuously variable transmission, and variator component of continuously variable transmission | |
| JP6136199B2 (en) | Spherical end grinding machine for roller workpieces | |
| EP0703387B1 (en) | Method for forming cam face on structure member of loading cam device for toroidal-type continuously variable transmission | |
| JP2013035075A (en) | Trunnion of toroidal continuously variable transmission and method of machining the same | |
| JP2000061702A (en) | End face machining method of disc for troidal type continuously variable transmission | |
| JP3855744B2 (en) | Superfinishing method and apparatus | |
| JPH0835553A (en) | Movement conversion device | |
| JP2002172560A (en) | Machining method and device of trunnion for toroidal continuously variable transmission | |
| JP2783478B2 (en) | Grinding wheel mounting structure | |
| JP3870608B2 (en) | Trunnion for half toroidal type continuously variable transmission and its processing method | |
| JP2011224677A (en) | Workpiece peripheral surface grinding machine and workpiece peripheral surface grinding method | |
| US6494807B1 (en) | Trunnion for half-toroidal-type continuously variable transmission and method for working the same | |
| JPH0663651A (en) | End part working method for pipe | |
| JPH077049Y2 (en) | Workpiece chuck device with spline holes | |
| JP2004019874A (en) | Machining method of variator parts for toroidal type continuously variable transmission | |
| JP2966955B2 (en) | Grinding method and equipment | |
| JP2000061790A (en) | Machining method of cam surface of loading cam device and machining device | |
| JP2000065174A (en) | Machining method and machining device for cam surface of loading cam device | |
| SU1256937A1 (en) | Method of working curvilinear components shaped as body of revolution | |
| JP2004034229A (en) | Disk working method of toroidal-type continuously variable transmission |