JPS61279326A - Form rolling method for gear - Google Patents

Form rolling method for gear

Info

Publication number
JPS61279326A
JPS61279326A JP12208485A JP12208485A JPS61279326A JP S61279326 A JPS61279326 A JP S61279326A JP 12208485 A JP12208485 A JP 12208485A JP 12208485 A JP12208485 A JP 12208485A JP S61279326 A JPS61279326 A JP S61279326A
Authority
JP
Japan
Prior art keywords
rolling
form rolling
gear
tooth
roll
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
Application number
JP12208485A
Other languages
Japanese (ja)
Inventor
Yosuke Miyashita
宮下 洋介
Saburo Shimamura
島村 三郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP12208485A priority Critical patent/JPS61279326A/en
Publication of JPS61279326A publication Critical patent/JPS61279326A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To make it unnecessary to execute the post-working after form rolling, by cutting and removing an excess thickness which is generated in an addendum of a gear billet, by keeping pace with an advance of form rolling. CONSTITUTION:A pair of roll dies 17, 18 are provided and rotated synchronously, also a hydraulic extruding mechanism 20 is provided, and a feed F1 is given in the billet diameter direction to the roll die 18. By this method, a gear billet W is rotated synchronously with the roll dies 17, 18 and form rolling is advanced. On the other hand, a milling cutter 24 is placed from the first stage of form rolling, and driven to rotate. According to this mechanism, as form rolling advances, the surface of a tooth form corresponding to the roll die 18 of the movable side swells, but as an excess thickness part grows, a higher part than the addendum surface if cut and removed by the milling cutter 24. Accordingly, when form rolling is completed, the rest of the excess thickness part is eliminated entirely, and cutting and removal being the post-working become unnecessary.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、一対のピニオン型のロールダイスを用いた
歯車の転造方法に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a gear rolling method using a pair of pinion type roll dies.

従来の技術 この棟の歯車の転造方法としてインフィード方式(押し
込み式)とスルーフィード方式(押し通し方式)とがあ
る。
Conventional Technology There are two methods for rolling gears in this building: the infeed method (push type) and the through feed method (push through method).

インフィード方式と呼ばjる方式は2第7図および第8
図に示すように、一対のピニオン型の転造工具(以下、
とf’Lfロールダイスという)1゜2を同期させて回
転駆動する一方、これらロールダイス1.2間に回転可
能に配置した歯■素材Wに対して径方向の送OF、を付
与し、そfLVcよって歯■素材Wにロールダイス1.
2の歯形を印圧して歯車を創成するものである。
The method called the infeed method is shown in Figures 2 and 7.
As shown in the figure, a pair of pinion-type rolling tools (hereinafter referred to as
and f'Lf roll dies) 1 and 2 are synchronously driven to rotate, while teeth rotatably arranged between these roll dies 1 and 2 provide a radial feed OF to the material W, According to fLVc, roll die 1 to material W.
A gear is created by applying pressure to the tooth profile No. 2.

こf″Iに対してスルーフィード方式と呼ばれる方式は
、第9図および第10図に示すように、工具としてテー
パ状の噛み込み導入1115?有するロールダイス3.
4?用い、歯I素材WK軸方向の送りF2?付与して押
し通すことで歯ME?創度する吃のである、 発明が解決しようとする問題点 このようなロールダイスを用いた歯車の転造方法におい
ては、開放運転中の素材の不均一な流動と、ロールダイ
スと素材との間の摩擦のため、転造の進行と併せて歯車
素材の表面が優先的に盛り上がり、完成した歯■の歯先
面に第11図(E)に示すようにまくれ込みと呼ばれる
余肉部Sが発生する。この余肉asFi転造の進行に併
せて第11図(A)〜(D)K示す過程を経て成長する
ものと認めらjる(尚、余肉部Sの発生については特願
昭59−39388号のほか、故瀬政更「歯■の重性加
工J (1963) 、養賢堂5P75〜78に詳[7
い)。
As shown in FIGS. 9 and 10, a method called a through-feed method for f''I uses a roll die 3. having a tapered bite introduction 1115 as a tool.
4? Use, tooth I material WK axial feed F2? Tooth ME by applying and pushing through? Problems to be solved by the invention In this gear rolling method using a roll die, there are problems such as non-uniform flow of the material during open operation and a problem that occurs between the roll die and the material. Due to the friction, the surface of the gear material preferentially swells as the rolling progresses, and an excess part S called a roll-up appears on the tip surface of the completed tooth (Fig. 11(E)). Occur. It is recognized that as the excess thickness asFi rolling progresses, it grows through the processes shown in FIGS. 11(A) to 11(D)K. In addition to No. 39388, details can be found in the late Masasaka Se, “Severe processing of teeth J (1963), Yokendo 5, p. 75-78 [7
stomach).

また、上記のような歯Iの転造方法においては、素材径
の選定次第では画歪の歯すじ方向両端部で素材が十分に
盛り上がらずに、第12図に示すように歯すじ方向両端
部にいわゆるだr部Qが生ずることがあるゎこnけ転造
方法そのものが開放型転造でおるために素材が軸方向に
流nてしまうためである。このよりな′#:nの発生を
防止する手段として、歯鳳径に対する素材径を大きくし
て盛り上がる体積を増やすことが者えられる。この場合
、仮りにだれの発生が防止さjたとしても逆に第13図
に示すように歯すじ方向中央部での盛り上がりが過大と
なり、余肉部Sが発生する。
In addition, in the rolling method for tooth I as described above, depending on the selection of the material diameter, the material may not rise sufficiently at both ends in the tooth trace direction due to image distortion, and as shown in FIG. This is because the so-called sag Q may occur in the axial direction of the material because the mold rolling method itself is an open type rolling method. As a means of preventing the occurrence of this twisted '#:n, it is possible to increase the volume of the raised material by increasing the diameter of the material relative to the diameter of the tooth. In this case, even if the occurrence of sagging could be prevented, conversely, as shown in FIG. 13, the bulge at the center in the tooth trace direction becomes excessive, and an excess wall portion S occurs.

このようにロールダイスによる歯車の転造方法において
はまくれ込みと呼ばj、る余肉sSの発生が不可避であ
る。そのため、後加工として余肉部S?切削して除去す
ることになるが、余肉部が歯面にまで及んでいることが
多いことから歯形′n度が著しく低下することになる。
As described above, in the method of rolling gears using a roll die, the occurrence of excess thickness sS called curling is unavoidable. Therefore, as a post-processing, the surplus part S? Although it is necessary to remove it by cutting, the excess thickness often extends to the tooth surface, resulting in a significant reduction in the tooth profile.

問題点を解決するための手段 本発明に、転造進行禍根での余肉部の発生を容認しつつ
も、転造が完了した段階では余肉部が残存しない方法を
提供するものである。
Means for Solving the Problems The present invention provides a method in which, while allowing the occurrence of excess thickness at the root of the rolling problem, the excess thickness does not remain at the stage when rolling is completed.

具体的には、転造の進行に伴って歯車素材の歯先面に生
ずる余肉fRsを、その転造の進行と併行して切削−除
去するものである。
Specifically, the extra thickness fRs generated on the tooth tip surface of the gear material as the rolling progresses is cut and removed in parallel with the progress of the rolling.

こnu、スルーフィード方式であるとインフィード方式
であるとを問わず、一対のロールダイスに加えて、こj
−らロールダイスと平行なフライスカッタを配置した装
置で実現できる。
Regardless of whether it is a through-feed method or an in-feed method, in addition to a pair of roll dies, this j
- This can be realized with a device that has a roll die and a milling cutter parallel to each other.

作中 本発明によ1ば、必要とさnる歯たけに合わせた位置に
プライスカッタの刃先をセットして回転駆動させる。こ
れにより、必要とさnる歯たけ以上に収長した余肉部は
その都ぜフライスカッタにより切削され、転造完了時に
け余肉部の全くない歯形が創成さrる。
According to the present invention, the cutting edge of the price cutter is set at a position corresponding to the required tooth depth and is driven to rotate. As a result, the excess thickness that has lengthened beyond the required tooth depth is cut off by the milling cutter each time, and a tooth profile without any excess thickness is created when rolling is completed.

実施例 第1図〜第3図は本発明方法を実現するためのインフィ
ードタイプの転造装首の一例について示している。
Embodiment FIGS. 1 to 3 show an example of an infeed type rolling neck for realizing the method of the present invention.

第1図1〜第3図に示すように、モータ6の回転出力は
減速歯車列7.8.9vr−介して同期軸10に伝達さ
r5同期軸10に固定ジれたウォーム11ヲ回転駆動す
る。ウオーム11にはそハぞn、、 K中間軸12上の
9オームホイール13が噛み合っており、中間軸13ハ
ユニバーサルジヨイント14?介して回転軸15 、1
6に連結さiている。
As shown in FIGS. 1 to 3, the rotational output of the motor 6 is transmitted to the synchronous shaft 10 through the reduction gear train 7, 8, 9, and rotates the worm 11 fixed to the synchronous shaft 10. do. A 9-ohm wheel 13 on the intermediate shaft 12 is engaged with the worm 11, and a universal joint 14 on the intermediate shaft 13 is engaged with the worm 11. Through the rotating shaft 15,1
It is connected to 6.

回転軸15.1fiFIJそtぞflにロールダイス1
7マたは18が固定さnており、こnら一対のロールダ
イス17 、18は上lICの回転伝達系により同期回
転される。一方の回転軸17は固定式のフレーム19に
支持されているものの、他方の回転軸18は油圧式押出
機構20のフレーム21に支持さnている。したがって
、一方のロールダイス18には油圧式押出機構頷のはた
らきにより径方向の送りF、が与えらnる。
Roll die 1 on rotating shaft 15.1fiFIJ
7 or 18 are fixed, and these pair of roll dies 17 and 18 are synchronously rotated by the rotation transmission system of the upper IC. One rotating shaft 17 is supported by a fixed frame 19, while the other rotating shaft 18 is supported by a frame 21 of a hydraulic extrusion mechanism 20. Therefore, one roll die 18 is given a radial feed F by the action of the hydraulic extrusion mechanism.

一対のロールダイス17 、18同士の間には支持体n
があり、この支持体22に治具23とともに歯車素材W
′fI−回転町卵に支持させている。支持体22はB方
向に移動可能なフローティング構造となっており、油圧
式押出機構20のはたらきによりロールダイス17 、
18同士の中心間距離が変化しても、常にその中心間距
離の中央部に歯車素材Wの中心が位置するようにフロー
ティングする。
A support n is provided between the pair of roll dies 17 and 18.
There is a gear material W on this support 22 together with a jig 23.
'fI- It is supported by the rotating machi egg. The support body 22 has a floating structure that is movable in the direction B, and by the action of the hydraulic extrusion mechanism 20, the roll die 17,
Even if the distance between the centers of 18 changes, the gear material W is floated so that the center of the gear material W is always located at the center of the distance between the centers.

歯I素材Wと反対仰には支持体22ヲはさんでフライス
カッタ24が配fT!tこれでいる。このフライスカッ
タ241−jその軸心が歯車素材Wの中心と平行であり
、図示外の駆動源により回転駆動ζnる。プた、フライ
スカッタ24の刃は、転造ざjる爾康とれ 噛み合わないようなピッチおよびねじを有する。
On the opposite side of the tooth I material W, a milling cutter 24 is placed with a support 22 in between fT! tThis is it. This milling cutter 241-j has its axis parallel to the center of the gear blank W, and is rotationally driven by a drive source not shown. Additionally, the blades of the milling cutter 24 have a pitch and thread that prevents them from interlocking during rolling.

つまり、フライスカッタ24の緒元としては、転造さn
る歯車に対してピッチ、モジュールともに異なる値とし
、ねじ1角については転造される歯車がけすは歯■の場
合に#:を同じ方向のねじれとし、平歯■の場合にけ3
0〜40臀度のねじf’s?もたせたカッタを使用する
。この場合、歯車素材Wとプライスカッタ24との間の
中心間距離は、転造しようとする歯車の歯たけに合わせ
て設定する。
In other words, the specifications of the milling cutter 24 are rolled n
The pitch and module are both different values for the gears that are rolled, and for one corner of the thread, if the gear to be rolled is a tooth ■, the twist is #: in the same direction, and if the gear is a spur tooth ■, the screw is 3.
0-40 degree screw f's? Use a flattened cutter. In this case, the distance between the centers of the gear material W and the price cutter 24 is set according to the tooth depth of the gear to be rolled.

次に、本発明の早lの実施例を上記の転造装首を用いた
場合を例にとって説明する。
Next, a first embodiment of the present invention will be described using the above-mentioned rolled neck as an example.

車1図に示すように2一対のロールダイス17゜18ヲ
同期回転させる一万で、油圧式押出機構20のは念らき
によりコールダイス18IC素材径方向へ送りF、を与
えることで、歯車素材Wがロールダイス17゜18と同
期回転して転造が進行するりこの場合の転造進行状況は
填4図(A)〜(E)に示すように従来と同様であり、
素材表面での滑りにより、転造される歯形のうち可動側
のロールダイス】8に対応する側の面が優先的に盛り上
がり、これが余肉is vc[長しようとする。
As shown in Figure 1, a pair of roll dies 17 and 18 are rotated synchronously at 10,000 yen, and the hydraulic extrusion mechanism 20 feeds the coal die 18 IC material in the radial direction by feeding F in the radial direction. Rolling progresses as W rotates synchronously with the roll die 17°18. The rolling progress in this case is the same as in the conventional case, as shown in Figures 4 (A) to (E).
Due to the sliding on the surface of the material, the side of the tooth profile to be rolled that corresponds to the movable roll die]8 preferentially swells, and this causes the excess thickness to become longer.

同時にフライスカッタ24は転造初期から回転駆動され
ており、その刃先面が塩4図(入)〜(g)に示すよう
に最終的に必要とされる歯念けの歯先面Pに作用するよ
うに設定されているりし念がって、金板りに軍4図(C
)において余肉部Sが歯先面Pよりも高く成長じたもの
とすると、この余肉部Sのうち歯先cmPよりも高い領
域(ハツチングで示す部分)はプライスカッタ24によ
り切削・除去される。さらに転造の進行に併せて@4図
(D)に示すように余肉sSが成長すると、歯先面Pよ
りも高い余肉部S全体が7ライスカツタ24により切削
・除去されるり このように、転造の進行に併せて余肉部Sが成長すると
、余肉gASのうち歯先面Pよりも高い部分(ハツチン
グ部分)がその都度フライスカッタ24で切削・除去さ
れることになるうその結果、転造され念書■の歯形とし
ては、嘱4図(g)のうちハツチングで示す余肉[Sが
除去され念正規の歯形となる。
At the same time, the milling cutter 24 is driven to rotate from the beginning of rolling, and its cutting edge surface acts on the tooth tip surface P of the final tooth preparation, as shown in Figures 4 (entered) to (g). I thought it was set up so that I could use the 4th military figure (C) on the gold plate.
), the extra thickness S is assumed to have grown higher than the tooth tip surface P, then the region of this extra thickness S that is higher than the tooth tip cmP (the part shown by hatching) is cut and removed by the price cutter 24. Ru. Furthermore, as the rolling progresses, as the excess metal sS grows as shown in Figure 4 (D), the entire excess metal part S higher than the tooth tip surface P is cut and removed by the 7-rice cutter 24 like this. As the excess thickness S grows as rolling progresses, the portion of the excess thickness gAS that is higher than the tooth tip surface P (hatching portion) is cut and removed by the milling cutter 24 each time. As a result, the tooth profile of the rolled Nenjo (2) becomes a normal tooth profile with the excess material [S] shown by hatching in Figure 4 (g) removed.

車5図および第6図は本発明の@2の実施例を示す図で
、スルーフィード方式に適用した例であるロ スルーフィード方式の場合には、両皿素材Wに軸方向の
送りF2が与えられることから、プライスカッタ24 
Aの軸心を歯j[素材Wの軸心の向きに対して直角とな
るような配電としているりさらに、ロールダイス17A
、18Aの歯形としてはストレートな整形部のほか傾斜
した噛み込み導入部5(第9図)を備えていること力・
ら、この整形部と噛み込み導入部との境界部付近にフラ
イスカッタ24Aの刃先が作用するように設定している
Figures 5 and 6 are diagrams showing the @2 embodiment of the present invention. In the case of a loss-through-feed method, which is an example applied to a through-feed method, axial feed F2 is applied to both plate materials W. From the given, price cutter 24
The axial center of A is arranged so that the power distribution is perpendicular to the direction of the axial center of the tooth j [material W, and furthermore, the roll die 17A
, 18A has a straight shaped part as well as an inclined biting introduction part 5 (Fig. 9).
Furthermore, the cutting edge of the milling cutter 24A is set to act near the boundary between the shaping portion and the biting introduction portion.

し念がって、本実施例の場合には、噛み込み導入部を通
過することに盛り上がった両皿素材Wの余肉部Sを切削
・除去することになり、作用としては基本的には第1実
施例と同様である。
To be careful, in the case of this embodiment, the surplus portion S of both plate materials W that has swelled up when passing through the biting introduction part is cut and removed, and basically the operation is as follows. This is the same as the first embodiment.

発明の効果 本発明によれば、転造の進行に伴って発生する余肉部を
七〇転造と併行してフライスカッタ等により切削・除去
するものであり、転造完了時には余肉やだれのない正規
形状の歯形が得られ、後加工令施す必要がないっ
Effects of the Invention According to the present invention, the excess thickness generated as the rolling progresses is cut and removed by a milling cutter or the like in parallel with the 70-degree rolling, and the excess thickness and dripping are removed when the rolling is completed. A tooth profile with a regular shape without any blemishes can be obtained, and there is no need for post-processing.

【図面の簡単な説明】[Brief explanation of the drawing]

2I!1図は本発明のFXIの実施例を示す図で第3図
のA方向矢視図、厭2図は填1図の■−■線に沿う断面
図、@3図は転造装置の一例を示す平面図、軍4関は転
造による歯形の変化を示す説明[F]、HLs図は本発
明の第2の実施f11を示す説明図、ボロ図ri填5図
の’4−■線に沿う断面図、填7図は従来のインフィー
ド方式の転造方法?示す説明図、@8図はボア図の正面
図、第9図は従来のスルーフィード方式の転造方法を示
す説明図、嘱lO図は鷹9図の正面囚、NK11図は従
来の転造方法による歯形の変化を示す説明図、填12図
および@13図は従来の成形欠陥の説明図である。 17 、17 A・・・ロールダイス、18 、18 
A・・・ロールダイス、24 、24 A・・・フライ
スカッタ、W・・・歯瓜素材う第1図 第2図 第7図 第8図 第 (A)     CB)      (C)第12図 ○ 11図 第13図
2I! Figure 1 is a diagram showing an embodiment of the FXI of the present invention, and is a view taken in the direction of arrow A in Figure 3, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, and Figure @3 is an example of a rolling device. 4 is an explanation showing the change in the tooth profile due to rolling [F], the HLs diagram is an explanatory diagram showing the second embodiment f11 of the present invention, and the line '4-■ Is the cross-sectional view along Figure 7, the conventional in-feed rolling method? Figure 8 is a front view of the bore diagram, Figure 9 is an explanatory diagram showing the conventional through-feed rolling method, Figure 1 is the front view of Figure 9, and Figure NK11 is the front view of the conventional rolling method. Explanatory drawings showing changes in tooth profile due to the method, Figure 12 and Figure @13 are explanatory diagrams of conventional molding defects. 17, 17 A... Roll dice, 18, 18
A... Roll die, 24, 24 A... Milling cutter, W... Tooth melon material Figure 1 Figure 2 Figure 7 Figure 8 (A) CB) (C) Figure 12○ Figure 11 Figure 13

Claims (1)

【特許請求の範囲】[Claims] (1)一対のピニオン型のロールダイス間に歯車素材を
はさんで歯車を転造する方法において、転造の進行に伴
つて歯車素材の歯先面に生ずる余肉部を、その転造の進
行と併行して切削・除去することを特徴とする歯車の転
造方法。
(1) In a method of rolling gears by sandwiching the gear material between a pair of pinion-type roll dies, the extra thickness that occurs on the tooth tip surface of the gear material as rolling progresses is A gear rolling method characterized by cutting and removing gears in parallel with progress.
JP12208485A 1985-06-05 1985-06-05 Form rolling method for gear Pending JPS61279326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12208485A JPS61279326A (en) 1985-06-05 1985-06-05 Form rolling method for gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12208485A JPS61279326A (en) 1985-06-05 1985-06-05 Form rolling method for gear

Publications (1)

Publication Number Publication Date
JPS61279326A true JPS61279326A (en) 1986-12-10

Family

ID=14827256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12208485A Pending JPS61279326A (en) 1985-06-05 1985-06-05 Form rolling method for gear

Country Status (1)

Country Link
JP (1) JPS61279326A (en)

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* Cited by examiner, † Cited by third party
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JP2015123484A (en) * 2013-12-27 2015-07-06 アイシン精機株式会社 Rolling device and rolling method
CN109759528A (en) * 2019-03-05 2019-05-17 西安交通大学 A kind of high toothed member multi-pass of canine tooth squeezes rolling die and method simultaneously

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015123484A (en) * 2013-12-27 2015-07-06 アイシン精機株式会社 Rolling device and rolling method
CN109759528A (en) * 2019-03-05 2019-05-17 西安交通大学 A kind of high toothed member multi-pass of canine tooth squeezes rolling die and method simultaneously
CN109759528B (en) * 2019-03-05 2020-09-15 西安交通大学 Multi-pass simultaneous extrusion rolling die and method for large-tooth high-tooth part

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