JPH10252870A - Gear having oil hole and manufacture therefor - Google Patents
Gear having oil hole and manufacture thereforInfo
- Publication number
- JPH10252870A JPH10252870A JP7074997A JP7074997A JPH10252870A JP H10252870 A JPH10252870 A JP H10252870A JP 7074997 A JP7074997 A JP 7074997A JP 7074997 A JP7074997 A JP 7074997A JP H10252870 A JPH10252870 A JP H10252870A
- Authority
- JP
- Japan
- Prior art keywords
- outer peripheral
- valley
- peripheral
- gear
- inner peripheral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0493—Gearings with spur or bevel gears
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Forging (AREA)
- Gears, Cams (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内周及び外周に歯形を
有し、内外周を連通する油孔を設けた油孔付き歯車及び
その製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear having an oil hole having a tooth profile on the inner and outer circumferences and having an oil hole communicating the inner and outer circumferences, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】例えば自動車の自動変速機等において、
潤滑油又は油圧制御用油を供給するため、歯車にはその
内外周を連通する油孔が設けられている。この油孔を設
けた歯車を製造する方法を図１１を基に説明すると、ま
ず、円柱状の素材１０１（図１１の（ア））に鍛造加工
を施し、底部１１２とその底部１１２から立設する周壁
部１１３を有するカップ状の予備成形品１１１（図１１
の（イ））を形成する。次に、予備成形品１１１の周壁
部１１３を据え込んで、内外周に所定の歯形１２２，１
２５を成形した中間成形品１２１（図１１の（ウ））を
形成する。そして最後に、中間成形品１２１の、外周歯
形１２２の外周山部１２３と外周山部１２３との間に形
成された外周谷部１２４にドリル等の孔明け手段により
油孔１３２を穿設して、歯車１３１が（図１１の
（エ））製造されていた。このように外周谷部１２４に
油孔１３２を穿設することにより、複数の油孔１３２を
容易に形成することができる。2. Description of the Related Art For example, in an automatic transmission of an automobile, etc.
In order to supply lubricating oil or oil for hydraulic control, the gear is provided with an oil hole communicating with the inner and outer circumferences. A method of manufacturing the gear provided with the oil hole will be described with reference to FIG. 11. First, a columnar material 101 ((A) in FIG. 11) is subjected to forging, and is erected from the bottom 112 and the bottom 112. A cup-shaped preform 111 having a peripheral wall portion 113 (see FIG. 11)
(A)) is formed. Next, the peripheral wall portion 113 of the preform 111 is swaged up, and a predetermined tooth profile 122, 1 is formed on the inner and outer circumferences.
An intermediate molded product 121 ((c) in FIG. 11) obtained by molding 25 is formed. Then, finally, an oil hole 132 is formed in the outer peripheral valley portion 124 formed between the outer peripheral ridge portion 123 of the outer peripheral tooth shape 122 of the intermediate molded product 121 by a drill or the like. The gear 131 was manufactured as shown in FIG. By forming the oil hole 132 in the outer peripheral valley portion 124 in this way, a plurality of oil holes 132 can be easily formed.
【０００３】ところが供給する油量を増加すべく油孔１
３２の数を増やすとその穿設に時間がかかってしまうと
いうことがある。そこで、油孔１３２の数を増やさず径
を拡大するということも考えられるが径を拡大すると、
油孔１３２が外周谷部１２４幅内に入りきらず、外周山
部１２３側に食み出してしまう。このように油孔１３２
が外周山部１２３側に食み出すと、油孔１３２穿設時に
孔明け手段が外周山部１２３に接触し、孔明け手段の寿
命が短くなるということがある。However, in order to increase the amount of oil to be supplied, oil holes 1
Increasing the number of 32 may take time to drill. Therefore, it is conceivable to increase the diameter without increasing the number of oil holes 132, but when the diameter is increased,
The oil hole 132 does not fit within the width of the outer peripheral valley 124 and protrudes toward the outer peripheral ridge 123. Thus, the oil hole 132
If the hole protrudes toward the outer peripheral ridge 123 side, the drilling means contacts the outer peripheral ridge 123 when the oil hole 132 is formed, and the life of the drilling means may be shortened.
【０００４】そこで更に、孔明け手段が歯に接触するこ
とを防ぐため、一歯分の外周山部をなくした欠歯部を数
ケ所設け、その欠歯部に油孔を穿設することがある。こ
のように欠歯部に油孔を穿設する歯車としては、出願人
の先出願である特願昭６３−２８６０６９号などがあ
る。In order to prevent the drilling means from coming into contact with the teeth, it is necessary to provide a plurality of missing tooth portions in which the outer peripheral ridge for one tooth has been eliminated, and to drill an oil hole in the missing tooth portion. is there. As such a gear for forming an oil hole in a toothless portion, there is Japanese Patent Application No. 63-286069 filed by the present applicant.
【０００５】[0005]
【発明が解決しようとする課題】上記欠歯部に油孔を穿
設した歯車では、油孔の径を拡大でき、供給する油量を
増加することができる。しかし、油孔を穿設するところ
が欠歯部に限定されるため、位置決めに時間がかかり、
生産性が低下するということがある。In a gear having an oil hole formed in the missing tooth portion, the diameter of the oil hole can be increased, and the amount of oil to be supplied can be increased. However, since the place where the oil hole is drilled is limited to the missing tooth part, it takes time to position,
Productivity may decrease.
【０００６】従って、本発明は上述の如き課題を解決
し、生産性が高く、供給する油量の多い歯車にも対応で
き、更に孔明け手段の寿命も長い油孔付き歯車及びその
製造方法を供給することを目的とする。Accordingly, the present invention solves the above-mentioned problems, and provides a gear with an oil hole, which has high productivity, can cope with a gear with a large amount of supplied oil, and has a long service life of a drilling means, and a method of manufacturing the same. The purpose is to supply.
【０００７】[0007]
【課題を解決するための手段】本発明は以下の通りであ
る。The present invention is as follows.
【０００８】１ 本発明の油孔付き歯車は、外周に凸設
される外周山部と凹設される外周谷部とからなる外周歯
形、内周に外周山部に対向する内周谷部と外周谷部に対
向する内周山部とからなる内周歯形を有し、外周山部の
軸線方向一部変形部の外面が内周谷部の内面より内側に
位置するとともに、変形部の外面と内周谷部の内面との
間に内外周を連通する油孔が成形される。[0010] A gear with an oil hole according to the present invention has an outer tooth profile including an outer peripheral ridge protruding on the outer periphery and an outer peripheral valley recessed on the outer periphery, and an inner valley and an outer valley facing the outer peripheral ridge on the inner periphery. An inner peripheral toothed portion comprising an inner peripheral ridge facing the portion, the outer surface of the axially partially deformed portion of the outer peripheral ridge is located inside the inner surface of the inner peripheral valley, and the outer surface of the deformed portion and the inner surface of the inner peripheral valley. An oil hole communicating between the inner and outer peripheries is formed between the inner and outer peripheries.
【０００９】２ また本発明の他の油孔付き歯車は、外
周に凸設される外周山部と凹設される外周谷部とからな
る外周歯形、内周に外周山部に対向する内周谷部と外周
谷部に対向する内周山部とからなる内周歯形を有し、内
周山部の軸線方向一部変形部の内面が外周谷部の外面よ
り内側に位置するとともに、変形部の内面と外周谷部の
外面との間に内外周を連通する油孔が成形される。(2) Another gear with an oil hole according to the present invention is an outer gear having an outer ridge formed on the outer periphery and an outer valley formed on the inner periphery, and an inner valley opposed to the outer ridge on the inner periphery. And having an inner peripheral tooth shape composed of an inner peripheral mountain portion facing the outer peripheral valley portion, and an inner surface of the axially partially deformed portion of the inner peripheral mountain portion is located inside the outer surface of the outer peripheral valley portion, and an inner surface of the deformed portion. An oil hole communicating the inner and outer peripheries is formed between the outer perimeter of the outer trough and the outer surface.
【００１０】３ 次に、本発明の油孔付き歯車の製造方
法は、外周に凸設される外周山部と凹設される外周谷部
とからなる外周歯形、内周に外周山部に対向する内周谷
部と外周谷部に対向する内周山部とからなる内周歯形を
有する予備歯車を成形する歯形成形工程と、外周山部の
軸線方向一部変形部を、その外面が内周谷部の内面より
内側に位置するように内側に押圧移動する押圧成形工程
とからなる。[0010] Next, the method for manufacturing a gear with an oil hole according to the present invention is directed to an outer peripheral tooth profile including an outer peripheral ridge protruding on the outer periphery and an outer peripheral valley recessed, and facing the outer peripheral ridge on the inner periphery. Forming process of forming a spare gear having an inner peripheral tooth shape composed of an inner peripheral valley portion and an inner peripheral valley portion facing the outer peripheral valley portion, and an axially partially deformed portion of the outer peripheral valley portion, the outer surface of which is an inner surface of the inner peripheral valley portion. And a press forming step of pressing and moving inward so as to be located further inside.
【００１１】４ また、本発明の他の油孔付き歯車の製
造方法は、外周に凸設される外周山部と凹設される外周
谷部とからなる外周歯形、内周に外周山部に対向する内
周谷部と外周谷部に対向する内周山部とからなる内周歯
形を有する予備歯車を成形する歯形成形工程と、内周山
部の軸線方向一部変形部を、その内面が外周谷部の外面
より外側に位置するように外側に押圧移動する押圧成形
工程とからなる。[0011] Further, another method of manufacturing a gear with an oil hole according to the present invention is characterized in that an outer peripheral tooth profile including an outer peripheral ridge portion protruding on the outer periphery and an outer peripheral valley portion recessed is provided. A tooth forming step of forming a spare gear having an inner peripheral tooth shape composed of an opposed inner peripheral valley and an inner peripheral ridge facing the outer peripheral valley, and an axially partially deformed portion of the inner peripheral valley, And a press forming step of pressing and moving outward so as to be located outside the outer surface of the sheet.
【００１２】[0012]
【実施例】以下、本発明の実施例を図１乃至図８に基づ
いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１３】図１の（エ）及び図４は本発明の実施例に
よる油孔付き歯車３１であり、図１は断面平面図、図４
は要部拡大図である。油孔付き歯車３１は所定の径を有
する底部１２と、その底部１２から連続して立設する周
壁部１３とからなり、周壁部１３には、外周に凸設され
る外周山部２３と凹設される外周谷部２４とからなる外
周歯形２２、内周に外周山部２３に対向する内周谷部２
７と外周谷部２４に対向する内周山部２６とからなる内
周歯形２５が設けられている。また、外周山部２３に
は、その軸線方向一部が周壁部１３の中心側に凹む凹み
空間３３が形成され、凹み空間３３に対向し周壁部１３
の中心側に変形部３４が設けられる。この変形部３４
は、その外面ｓが内周谷部２７の内面ｔより内側に位置
し、変形部３４の外面ｓと内周谷部２７の内面ｔとの間
に内外周を連通する油孔３２が形成されている。FIGS. 1D and 4 show a gear 31 with an oil hole according to an embodiment of the present invention. FIG.
Is an enlarged view of a main part. The gear 31 with an oil hole includes a bottom portion 12 having a predetermined diameter, and a peripheral wall portion 13 erected continuously from the bottom portion 12. An outer peripheral valley portion 24 and an inner peripheral valley portion 2 opposed to an outer peripheral ridge portion 23 on the inner periphery.
An inner peripheral tooth shape 25 including an inner peripheral mountain portion 26 facing the outer peripheral valley portion 24 is provided. Further, a concave space 33 is formed in the outer peripheral mountain portion 23 so that a part thereof in the axial direction is depressed toward the center of the peripheral wall portion 13.
Is provided on the center side of. This deformed part 34
Has an outer surface s located inside the inner surface t of the inner peripheral valley portion 27, and an oil hole 32 communicating between the inner and outer peripheries is formed between the outer surface s of the deformed portion 34 and the inner surface t of the inner peripheral valley portion 27.
【００１４】このような油孔付き歯車３１を製造する方
法を図１に基づいて順次説明する。A method of manufacturing such a gear 31 with an oil hole will be sequentially described with reference to FIG.
【００１５】まず、図１の（ア）に示す如き円柱状の素
材１に鍛造加工を施し、図１の（イ）に示す如き底部１
２と周壁部１３とを有するカップ状の予備成形品１１を
形成する。次に、予備成形品１１の周壁部１３を据え込
んで、図１の（ウ）に示す如き外周に凸設される外周山
部２３と凹設される外周谷部２４とからなる外周歯形２
２、内周に外周山部２３に対向する内周谷部２７と外周
谷部２４に対向する内周山部２６とからなる内周歯形２
５を有する予備歯車２１を形成する。そして最後に、予
備歯車２１の外周山部２３の軸線方向一部変形部３４を
内側に押圧移動し、図１の（エ）及び図４に示す如く、
内外周を連通する油孔３２を成形した油孔付き歯車３１
を形成する。First, a columnar material 1 as shown in FIG. 1A is forged, and a bottom 1 as shown in FIG.
The cup-shaped preform 11 having the peripheral wall portion 13 and the cup 2 is formed. Next, the peripheral wall portion 13 of the preform 11 is set up, and as shown in FIG. 1 (c), an outer peripheral tooth shape 2 composed of an outer peripheral ridge portion 23 protruding on the outer periphery and an outer peripheral valley portion 24 recessed.
2. An inner peripheral tooth shape 2 including an inner peripheral valley 27 facing the outer peripheral valley 23 and an inner peripheral valley 26 facing the outer peripheral valley 24 on the inner periphery.
5 is formed. Then, finally, the axially partially deformed portion 34 of the outer peripheral mountain portion 23 of the spare gear 21 is pressed and moved inward, and as shown in FIGS.
Gear 31 with an oil hole formed with an oil hole 32 communicating the inner and outer circumferences
To form
【００１６】上記製造工程の中で、特に予備歯車２１か
ら油孔付き歯車３１を形成する押圧成形工程を図２乃至
図８に基づいて説明する。In the above manufacturing process, a press forming process for forming the gear 31 with an oil hole from the spare gear 21 will be described with reference to FIGS.
【００１７】まず図２により、押圧成形装置５１を説明
する。尚、図の左半部は押圧成形装置５１への予備歯車
２１の装着前、右半部は装着後の状態を表す。７１は予
備歯車２１を配置する下型で、下型７１に対向してその
上方に上下動自在の上型６１が配設される。First, the press forming apparatus 51 will be described with reference to FIG. The left half of the drawing shows the state before the auxiliary gear 21 is mounted on the pressing device 51, and the right half shows the state after the mounting. Reference numeral 71 denotes a lower die on which the spare gear 21 is disposed, and an upper die 61 capable of moving up and down is disposed above and opposite to the lower die 71.
【００１８】この下型７１は、その中心に予備歯車２１
を装着する円柱状のマンドレル７８を備え、マンドレル
７８の外周側には、中心に向かって突出する成形パンチ
７５を備える移動ホルダ７２と、移動ホルダ７２の下側
に配置される環状の支持ブロック７６と、支持ブロック
７６の下側に更に配置されマンドレル７８の位置決めを
する環状のベース７７が配設される。ここでマンドレル
７８には、外周を均等に四分割する位置に、図５に示す
如く、軸線方向に延び、予備歯車２１の内周谷部２７に
係合する保持突部８０が設けられる。尚、図７に示す如
く、保持突部８０には軸線方向一部が未成形の欠部７９
が設けられる。また移動ホルダ７２は、図２に示す如
く、保持突部８０に対向する位置にマンドレル７８に向
かって進退可能に配置され、その上端外周側には上型６
１に向かって漸次小径となるすべり面７４が設けられて
いる。この移動ホルダ７２に固定される成形パンチ７５
は、マンドレル７８の欠部７９に対向する位置に備えら
れ、図５に示す如く、その先端幅方向両端のガイド７５
ｂ，７５ｂが、その間の先端押部７５ａよりマンドレル
７８側に突出している。The lower mold 71 has a spare gear 21 at its center.
, A movable holder 72 having a forming punch 75 protruding toward the center, and an annular support block 76 disposed below the movable holder 72 on the outer peripheral side of the mandrel 78. In addition, an annular base 77 which is further disposed below the support block 76 and positions the mandrel 78 is provided. Here, the mandrel 78 is provided with a holding projection 80 extending in the axial direction and engaging with the inner peripheral valley portion 27 of the spare gear 21 as shown in FIG. As shown in FIG. 7, a part of the holding protrusion 80 in the axial direction is an unformed cutout 79.
Is provided. As shown in FIG. 2, the movable holder 72 is disposed at a position facing the holding projection 80 so as to be able to advance and retreat toward the mandrel 78.
A sliding surface 74 having a gradually decreasing diameter toward 1 is provided. Forming punch 75 fixed to this moving holder 72
Are provided at positions facing the notch 79 of the mandrel 78, and as shown in FIG.
b and 75b protrude toward the mandrel 78 from the distal end pressing portion 75a therebetween.
【００１９】次に上型６１は、マンドレル７８に対向す
るパンチ６３と、移動ホルダ７２に対向する加圧リング
６４と、パンチ６３と加圧リング６４を一体に固定する
固定盤６２とからなり、加圧リング６４の下型７１側内
周部は、移動ホルダ７２のすべり面７４に係合するテー
パ面６５が設けられる。The upper die 61 comprises a punch 63 facing the mandrel 78, a pressure ring 64 facing the moving holder 72, and a fixed plate 62 for integrally fixing the punch 63 and the pressure ring 64. A tapered surface 65 that engages with the sliding surface 74 of the movable holder 72 is provided on the inner peripheral portion of the lower die 71 on the pressing ring 64.
【００２０】上記押圧成形装置５１で予備歯車２１から
油孔付き歯車３１を形成する工程を説明する。まず図２
の左半部に示す如く、上型６１を上方で、移動ホルダ７
２を外周側で待機させ、予備歯車２１をその底部１２が
上側に位置する状態でマンドレル７８上方に搬送し、そ
の後、図２の右半部に示す如く、予備歯車２１をマンド
レル７８に装着する。このとき図７に示す如く、成形パ
ンチ７５に対向する位置ではマンドレル７８の欠部７９
により、予備歯車２１とマンドレル７８との間には成形
空間９０が存在する。これに対し、欠部７９の軸線方向
両側は図５に示す如く、マンドレル７８の保持突部８０
が予備歯車２１の内周谷部２７に係合する。The process of forming the gear 31 with oil holes from the spare gear 21 in the press forming apparatus 51 will be described. First, FIG.
As shown in the left half of FIG.
2 is made to stand by on the outer peripheral side, and the spare gear 21 is transported above the mandrel 78 with the bottom 12 thereof positioned above, and then the spare gear 21 is mounted on the mandrel 78 as shown in the right half of FIG. . At this time, as shown in FIG.
Accordingly, a molding space 90 exists between the preliminary gear 21 and the mandrel 78. On the other hand, as shown in FIG.
Engages with the inner peripheral valley portion 27 of the spare gear 21.
【００２１】続いて、図３に示す如く、上型６１を下降
させ、加圧リング６４のテーパ面６５が移動ホルダ７２
のすべり面７４に当接すると同時に、そのテーパ作用に
より移動ホルダ７２はマンドレル７８側へ移動する。最
終的に移動ホルダ７２に固定される成形パンチ７５が予
備歯車２１の外周山部２３の軸線方向一部変形部３４を
マンドレル７８側へ押圧して、図８に示す如く、変形部
３４の外面ｓが内周谷部２７の内面ｔより内側に位置す
るように、成形パンチ７５の先端押部７５ａで変形部３
４を移動させる。この移動のとき、変形部３４は押圧さ
れて周方向へ膨出しようとするが、成形パンチ７５の幅
方向両端に形成されるガイド７５ｂ，７５ｂにより規制
されるので、周方向の膨出が抑制される。また、変形部
３４の軸線方向両側は、図６に示す如く、予備歯車２１
の内周谷部２７に係合するマンドレル７８の保持突部８
０により歯形形状が保持されるので、押圧移動する変形
部３４に追従して変形することはない。そしてその結
果、図４に示す如く、変形部３４の外面ｓと内周谷部２
７の内面ｔとの間に内外周を連通する油孔３２が２つ成
形され、油孔付き歯車３１の形成が完了する。Subsequently, as shown in FIG. 3, the upper die 61 is lowered, and the tapered surface 65 of the pressure ring 64 is moved to the movable holder 72.
At the same time, the movable holder 72 moves toward the mandrel 78 by the taper action. The forming punch 75 finally fixed to the moving holder 72 presses the partially deformed portion 34 in the axial direction of the outer peripheral mountain portion 23 of the preliminary gear 21 toward the mandrel 78, and as shown in FIG. The deformed portion 3 is formed by the tip pressing portion 75a of the forming punch 75 so that s is located inside the inner surface t of the inner peripheral valley portion 27.
Move 4. During this movement, the deformed portion 34 is pressed and swells in the circumferential direction, but is restricted by the guides 75b, 75b formed at both ends in the width direction of the forming punch 75, so that swelling in the circumferential direction is suppressed. Is done. As shown in FIG. 6, both sides of the deformed portion 34 in the axial direction
Of the mandrel 78 that engages the inner peripheral valley 27
Since the tooth shape is maintained by 0, the tooth shape is not deformed following the deformed portion 34 that moves by pressing. As a result, as shown in FIG. 4, the outer surface s of the deformed portion 34 and the inner peripheral valley 2
Two oil holes 32 are formed between the inner surface t and the inner surface t so as to communicate the inner and outer circumferences, and the formation of the gear 31 with oil holes is completed.
【００２２】よって上述の如き油孔付き歯車３１は、内
周谷部２７に沿って大きな油孔３２を有する。Therefore, the gear 31 with an oil hole as described above has a large oil hole 32 along the inner peripheral valley portion 27.
【００２３】また、上述の如き油孔付き歯車３１の製造
方法によれば、変形部３４の押圧成形で油孔３２を成形
できる。更に、従来の油孔１３２成形の如き耐久性の低
いドリルを使用することなく、油孔３２が成形できる。According to the above-described method of manufacturing the gear 31 with an oil hole, the oil hole 32 can be formed by pressing the deformed portion 34. Further, the oil hole 32 can be formed without using a low-durability drill unlike the conventional oil hole 132.
【００２４】尚、上記実施例の油孔付き歯車３１では、
外周山部２３の軸線方向一部変形部３４の外面ｓが内周
谷部２７の内面ｔより内側に位置するとともに、変形部
３４の外面ｓと内周谷部２７の内面ｔとの間に内外周を
連通する油孔３２が成形されたが、逆に図１０に示す如
く、内周山部２６の軸線方向一部変形部３４の内面ｙが
外周谷部２４の外面ｘより内側に位置するとともに、変
形部３４の内面ｙと外周谷部２４の外面ｘとの間に内外
周を連通する油孔３２が成形されても良い。In the gear 31 with the oil hole of the above embodiment,
The outer surface s of the partially deformed portion 34 in the axial direction of the outer peripheral mountain portion 23 is located inside the inner surface t of the inner peripheral valley portion 27, and the inner and outer circumferences communicate between the outer surface s of the deformed portion 34 and the inner surface t of the inner peripheral valley portion 27. In contrast, as shown in FIG. 10, the inner surface y of the partially deformed portion 34 in the axial direction of the inner peripheral mountain portion 26 is located inside the outer surface x of the outer peripheral valley portion 24 and the deformed portion is formed as shown in FIG. An oil hole 32 communicating the inner and outer circumferences may be formed between the inner surface y of the outer circumferential surface 34 and the outer surface x of the outer circumferential valley portion 24.
【００２５】この場合、油孔付き歯車の製造方法は図９
に示す如く、予備歯車２１の内周側に設置される成形パ
ンチ７５により、内周山部２６の軸線方向一部変形部３
４を、その内面ｙが外周谷部２４の外面ｘより外側に位
置するように外側に押圧移動することができる。In this case, the method of manufacturing the gear with oil holes is shown in FIG.
As shown in the figure, the axially partially deformed portion 3 of the inner peripheral mountain portion 26 is formed by the forming punch 75 installed on the inner peripheral side of the preliminary gear 21.
4 can be moved outward so that its inner surface y is located outside the outer surface x of the outer peripheral valley portion 24.
【００２６】[0026]
【発明の効果】以上のように本発明の油孔付き歯車によ
れば、内周谷部に沿って大きな油孔を有するので、供給
する油量を増加することができる。また、本発明の油孔
付き歯車の製造方法によれば、変形部の押圧成形で油孔
を成形できるので、生産性を向上させることができる。
更に、従来の油孔成形の如き耐久性の低いドリルを使用
することなく、油孔が成形できるので、孔明け手段の寿
命も長くなる。As described above, according to the gear with an oil hole of the present invention, since the oil hole has a large oil hole along the inner peripheral valley, the amount of oil to be supplied can be increased. Further, according to the method of manufacturing a gear with an oil hole of the present invention, the oil hole can be formed by press-forming the deformed portion, so that the productivity can be improved.
Further, since the oil hole can be formed without using a drill having low durability as in the conventional oil hole forming, the life of the drilling means is prolonged.
【図１】本発明の実施例による油孔付き歯車の製造方法
を表す断面平面図である。FIG. 1 is a sectional plan view illustrating a method for manufacturing a gear with oil holes according to an embodiment of the present invention.
【図２】本発明の実施例により予備歯車から油孔付き歯
車を製造する工程を表し、左半部は予備歯車装着前、右
半部は装着後の状態を表す。FIG. 2 illustrates a process of manufacturing a gear with an oil hole from a spare gear according to an embodiment of the present invention. The left half shows a state before the spare gear is mounted, and the right half shows a state after the spare gear is mounted.
【図３】本発明の実施例により予備歯車から油孔付き歯
車を製造する工程の油孔成形後の状態を表す。FIG. 3 shows a state after forming an oil hole in a process of manufacturing a gear with an oil hole from a spare gear according to an embodiment of the present invention.
【図４】本発明の実施例による油孔付き歯車の要部斜視
図である。FIG. 4 is a perspective view of a main part of a gear with an oil hole according to an embodiment of the present invention.
【図５】図２のＢ−Ｂ断面平面図である。FIG. 5 is a sectional plan view taken along line BB of FIG. 2;
【図６】図３のＤ−Ｄ断面平面図である。FIG. 6 is a sectional plan view taken along line DD of FIG. 3;
【図７】図２のＡ−Ａ断面平面図である。FIG. 7 is a sectional plan view taken along the line AA of FIG. 2;
【図８】図３のＣ−Ｃ断面平面図である。FIG. 8 is a cross-sectional plan view taken along the line CC of FIG. 3;
【図９】本発明の他の実施例により油孔付き歯車を製造
する工程を表す断面平面図である。FIG. 9 is a cross-sectional plan view illustrating a step of manufacturing a gear with an oil hole according to another embodiment of the present invention.
【図１０】本発明の他の実施例による油孔付き歯車の要
部斜視図である。FIG. 10 is a perspective view of a main part of a gear with an oil hole according to another embodiment of the present invention.
【図１１】従来の油孔付き歯車の製造方法を表す断面平
面図である。FIG. 11 is a cross-sectional plan view illustrating a conventional method of manufacturing a gear with an oil hole.
２１ 予備歯車 ２２ 外周歯形 ２３ 外周山部 ２４ 外周谷部 ２５ 内周歯形 ２６ 内周山部 ２７ 内周谷部 ３２ 油 孔 ３４ 変形部 ｓ （変形部の）外面 ｔ （内周谷部の）内面 ｘ （外周谷部の）外面 ｙ （変形部の）内面 Reference Signs List 21 spare gear 22 outer peripheral tooth shape 23 outer peripheral peak portion 24 outer peripheral valley portion 25 inner peripheral tooth shape 26 inner peripheral peak portion 27 inner peripheral valley portion 32 oil hole 34 deformed portion s (deformed portion) outer surface t (inner peripheral valley portion) inner surface x (outer peripheral valley portion) Outside surface y) inside surface (of deformed part)
Claims (4)
設される外周谷部（２４）とからなる外周歯形（２
２）、内周に前記外周山部（２３）に対向する内周谷部
（２７）と前記外周谷部（２４）に対向する内周山部
（２６）とからなる内周歯形（２５）を有し、前記外周
山部（２３）の軸線方向一部変形部（３４）の外面
（ｓ）が内周谷部（２７）の内面（ｔ）より内側に位置
するとともに、該変形部（３４）の外面（ｓ）と内周谷
部（２７）の内面（ｔ）との間に内外周を連通する油孔
（３２）が成形される油孔付き歯車。An outer peripheral tooth profile (2) comprising an outer peripheral ridge (23) protruding on the outer periphery and an outer peripheral valley (24) recessed.
2) having an inner peripheral tooth form (25) on the inner periphery comprising an inner peripheral valley (27) facing the outer peripheral valley (23) and an inner peripheral valley (26) facing the outer peripheral valley (24); The outer surface (s) of the partially deformed portion (34) in the axial direction of the outer peripheral mountain portion (23) is located inside the inner surface (t) of the inner peripheral valley portion (27), and the outer surface ( A gear with an oil hole in which an oil hole (32) communicating between the inner and outer peripheries is formed between s) and the inner surface (t) of the inner peripheral valley (27).
される外周谷部（２４）とからなる外周歯形（２２）、
内周に前記外周山部（２３）に対向する内周谷部（２
７）と前記外周谷部（２４）に対向する内周山部（２
６）とからなる内周歯形（２５）を有し、前記内周山部
（２６）の軸線方向一部変形部（３４）の内面（ｙ）が
外周谷部（２４）の外面（ｘ）より内側に位置するとと
もに、該変形部（３４）の内面（ｙ）と外周谷部（２
４）の外面（ｘ）との間に内外周を連通する油孔（３
２）が成形される油孔付き歯車。2. An outer peripheral tooth profile (22) comprising an outer peripheral ridge (23) protruding on the outer periphery and an outer peripheral valley (24) recessed.
An inner peripheral valley (2) opposed to the outer peripheral ridge (23)
7) and the inner peripheral ridge (2) facing the outer peripheral valley (24).
6), and the inner surface (y) of the partially deformed portion (34) in the axial direction of the inner peripheral ridge (26) is larger than the outer surface (x) of the outer peripheral valley (24). And the inner surface (y) of the deformed portion (34) and the outer valley (2).
Oil hole (3) communicating the inner and outer circumferences with the outer surface (x) of (4).
2) A gear with an oil hole formed.
設される外周谷部（２４）とからなる外周歯形（２
２）、内周に前記外周山部（２３）に対向する内周谷部
（２７）と前記外周谷部（２４）に対向する内周山部
（２６）とからなる内周歯形（２５）を有する予備歯車
（２１）を成形する歯形成形工程と、前記外周山部（２
３）の軸線方向一部変形部（３４）を、その外面（ｓ）
が内周谷部（２７）の内面（ｔ）より内側に位置するよ
うに内側に押圧移動する押圧成形工程とからなることを
特徴とする油孔付き歯車の製造方法。3. An outer tooth profile (2) comprising an outer peripheral ridge (23) protruding on the outer periphery and an outer peripheral valley (24) recessed.
2) A spare having an inner peripheral tooth shape (25) on the inner periphery comprising an inner peripheral valley (27) facing the outer peripheral valley (23) and an inner peripheral ridge (26) facing the outer peripheral valley (24). A tooth forming step of forming a gear (21);
The partially deformed portion (34) in the axial direction of (3) is attached to its outer surface (s).
And a pressing step of pressing and moving inward so as to be located inside the inner surface (t) of the inner peripheral valley portion (27).
設される外周谷部（２４）とからなる外周歯形（２
２）、内周に前記外周山部（２３）に対向する内周谷部
（２７）と前記外周谷部（２４）に対向する内周山部
（２６）とからなる内周歯形（２５）を有する予備歯車
（２１）を成形する歯形成形工程と、前記内周山部（２
６）の軸線方向一部変形部（３４）を、その内面（ｙ）
が外周谷部（２４）の外面（ｘ）より外側に位置するよ
うに外側に押圧移動する押圧成形工程とからなることを
特徴とする油孔付き歯車の製造方法。4. An outer peripheral tooth form (2) comprising an outer peripheral ridge (23) protruding on the outer periphery and an outer peripheral valley (24) recessed.
2) A spare having an inner peripheral tooth shape (25) on the inner periphery comprising an inner peripheral valley (27) facing the outer peripheral valley (23) and an inner peripheral ridge (26) facing the outer peripheral valley (24). A tooth forming step of forming a gear (21);
The partially deformed portion (34) in the axial direction of (6) is connected to its inner surface (y).
A press forming step of pressing and moving the outer side so as to be located outside the outer surface (x) of the outer peripheral valley portion (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07074997A JP3342343B2 (en) | 1997-03-08 | 1997-03-08 | Gear with oil hole and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07074997A JP3342343B2 (en) | 1997-03-08 | 1997-03-08 | Gear with oil hole and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10252870A true JPH10252870A (en) | 1998-09-22 |
| JP3342343B2 JP3342343B2 (en) | 2002-11-05 |
Family
ID=13440481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07074997A Expired - Fee Related JP3342343B2 (en) | 1997-03-08 | 1997-03-08 | Gear with oil hole and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3342343B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013174338A (en) * | 2012-02-27 | 2013-09-05 | Honda Motor Co Ltd | Power transmission device |
-
1997
- 1997-03-08 JP JP07074997A patent/JP3342343B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013174338A (en) * | 2012-02-27 | 2013-09-05 | Honda Motor Co Ltd | Power transmission device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3342343B2 (en) | 2002-11-05 |
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