JPS6045972B2 - Flat die for rolling - Google Patents
Flat die for rollingInfo
- Publication number
- JPS6045972B2 JPS6045972B2 JP57050862A JP5086282A JPS6045972B2 JP S6045972 B2 JPS6045972 B2 JP S6045972B2 JP 57050862 A JP57050862 A JP 57050862A JP 5086282 A JP5086282 A JP 5086282A JP S6045972 B2 JPS6045972 B2 JP S6045972B2
- Authority
- JP
- Japan
- Prior art keywords
- tooth
- group
- die
- rolling
- finishing
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H5/00—Making gear wheels, racks, spline shafts or worms
- B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
- B21H5/027—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls by rolling using reciprocating flat dies, e.g. racks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】 本発明は転造用平ダイスの改良に関する。[Detailed description of the invention] The present invention relates to improvements in flat rolling dies.
周知の如く、この種の平ダイスは、第１図に示すように
、その歯面長手方向沿いに順に喰付歯群Ａ）仕上歯群Ｂ
および逃歯群Ｃを有している。As is well known, as shown in FIG. 1, this type of flat die has a biting tooth group A) a finishing tooth group B in order along the longitudinal direction of the tooth surface.
and has a group C of missing teeth.
そして、被加工物に付与される歯形は仕上歯群Ｂの各歯
の歯形に基づいて形成される。ところで、一般に塑性加
工においては塑性変形のみならず弾性変形も考慮するこ
とが必要であり、例えは第２図に示す如く、被加工物に
付与すべき正規の歯形がＦてあるとすれは、被加工物の
材料の弾性変形を考慮に入れて、平ダイスの仕上歯群に
おける各歯の歯形を、加工時に被加工物に対して歯形ｆ
を形成するように歯形形成している。The tooth profile to be applied to the workpiece is formed based on the tooth profile of each tooth of the finishing tooth group B. By the way, in general, in plastic working, it is necessary to consider not only plastic deformation but also elastic deformation. For example, as shown in Fig. 2, if the regular tooth profile to be given to the workpiece is F, then Taking into account the elastic deformation of the material of the workpiece, the tooth profile of each tooth in the finishing tooth group of the flat die is adjusted to the tooth profile f with respect to the workpiece during machining.
The teeth are formed to form a tooth profile.
仕上歯群の各歯て歯形ｆが付与された後に、転造圧が解
除されると、材料の弾性復帰により正規の歯形Ｆが最終
的に形成されることになる。ところが、弾性変形量は、
転造のための工作機械の剛性に左右され、それを予め計
算により正確に求めることは実際上は期し難い。周知の
如く、弾性変形量は塑性変形量が大きければ大きい程そ
れに応じて大きくなり、また弾性変形量が大きくなれば
なる程歯形誤差は大きくなる。したがつて、被加工物に
正確に歯形を付与するためには、弾性変形量を少なくす
ればよく、換言すれば塑性変形量を少なくすればよい。
つまり、仕上歯群による歯形付与、すなわち、仕上歯Ｊ
群による被加工物に対する押込を従来の如く１回で行な
うのでなく、数段階に分け、１段階毎の押入量すなわち
塑性変形量を小さくすればよい。本発明は上記の着想に
基づいてなしたもので、その目的は加工精度のよい転造
用平ダイスを提供丁することにある。第１発明は、仕上
転造つまり荒加工された被加工物の仕上加工を施すため
の転造に好適な平ダースを提供しようとするものであつ
て、その要旨とするところは、上記仕上歯群をさらに複
数の小群て構成するとともに、逃歯群寄りの小群の各歯
の歯厚を該小群に隣り合う喰付歯群寄りの小群の各歯の
歯厚より若干小さくなるように構成したことを特徴とす
る転造用平ダイスに存する。After the tooth profile f has been applied to each tooth of the finished tooth group, when the rolling pressure is released, the regular tooth profile F is finally formed due to elastic recovery of the material. However, the amount of elastic deformation is
This depends on the rigidity of the machine tool used for rolling, and it is practically impossible to accurately calculate it in advance. As is well known, the larger the amount of plastic deformation, the larger the amount of elastic deformation becomes, and the larger the amount of elastic deformation, the larger the tooth profile error becomes. Therefore, in order to accurately provide a tooth profile to a workpiece, the amount of elastic deformation may be reduced, or in other words, the amount of plastic deformation may be reduced.
In other words, the tooth profile is given by the group of finished teeth, that is, the finished teeth J
Instead of pushing the workpiece by the group in one step as in the conventional method, it is sufficient to divide it into several stages and reduce the amount of pushing, that is, the amount of plastic deformation in each stage. The present invention was made based on the above idea, and its purpose is to provide a flat die for rolling with good processing accuracy. The first invention aims to provide a flat dart suitable for finish rolling, that is, rolling for finishing rough machined workpieces, and the gist thereof is to provide a flat dart machine suitable for finish rolling, that is, for finishing rough machined workpieces. The group is further configured into a plurality of small groups, and the tooth thickness of each tooth in the small group closer to the escape tooth group is made slightly smaller than the tooth thickness of each tooth in the small group adjacent to the biting tooth group. A flat die for rolling is characterized by being configured as follows.
第２発明は、むく転造つまり荒加工するための転造に好
適な平ダイスを提供するものであつて、その要至とする
ところは、第１発明の構成においてさらに、逃歯群寄り
の小群の各歯の歯先のダイス底面より距離を該小群に隣
り合う喰付歯群寄りの小群の各歯の歯先のダイス底面よ
りの距離より若干小さくなるように構成したことを特徴
とする転造用平ダイスに存する。The second invention provides a flat die suitable for rolling, that is, rolling for rough machining. The distance between the tip of each tooth of the small group from the bottom surface of the die is slightly smaller than the distance from the bottom surface of the die of the tip of each tooth of the small group adjacent to the biting tooth group adjacent to the small group. The feature lies in the flat rolling die.
以下に、第３〜７図に示した実施例について各本発明を
具体的に説明する。Each of the inventions will be specifically described below with respect to the embodiments shown in FIGS. 3 to 7.
先ず始めに、第３，４，５に基づいて仕上転造に好適な
平ダイスについて説明する。First, flat dies suitable for finish rolling will be explained based on No. 3, 4, and 5.
平ダイスの歯面には、長手方向沿いに順に並んだ喰付歯
群Ａ仕上歯群Ｂ、および逃歯群Ｃを形成している。On the tooth surface of the flat die, a biting tooth group, a finishing tooth group B, and a relief tooth group C are formed in order along the longitudinal direction.
そして仕上歯群Ｂはさらに長手方向沿いに第１仕上歯群
Ｂ１と第２仕上歯群Ｂ２に区分けしている。第３，４図
において、Ｑはダイス底面、０は各歯の歯底を結ぶ歯底
線、Ｐは基準ピッチ線、ｍは各歯の歯先を結ふ歯先線、
ｎは各歯の歯厚を示すために書き入れたダイス底面Ｑに
対して平行な基準平行線を示している。The finished tooth group B is further divided into a first finished tooth group B1 and a second finished tooth group B2 along the longitudinal direction. In Figures 3 and 4, Q is the die bottom surface, 0 is the tooth bottom line connecting the tooth bottoms of each tooth, P is the reference pitch line, m is the tooth tip line connecting the tooth tips of each tooth,
n indicates a reference parallel line parallel to the die bottom surface Q drawn to indicate the tooth thickness of each tooth.
周知の如く、仕上用平ダイスは一般に、荒加工により既
に形成された被加工物の歯のブランクを仕上加工するこ
とを目的としており、歯底の加工．は行なわない。As is well known, finishing flat dies are generally used for finishing the tooth blank of a workpiece that has already been formed by rough machining, and for machining the bottom of the tooth. will not be carried out.
したがつて、図より明らかなように、歯先線ｍはダイス
底面Ｑや基準平行線ｎに対して平行としている。つまり
、各群の歯の歯先からダイス底面Ｑに至る距離ＬＡ，Ｌ
Ｂｌ，ＬＢ２，ＬＣは全て等しい寸法構成としている。
一方、各群において各歯毎に歯厚（基準平行線上の歯厚
）を変えるため、あるいは各群毎に歯厚を変えるために
、基準ピッチ線Ｐおよび歯底線０をダイス底面Ｑに対し
て変化させている。Therefore, as is clear from the figure, the tooth tip line m is parallel to the die bottom surface Q and the reference parallel line n. In other words, the distances LA, L from the tips of the teeth of each group to the die bottom surface Q
Bl, LB2, and LC are all configured with equal dimensions.
On the other hand, in order to change the tooth thickness (tooth thickness on the reference parallel line) for each tooth in each group, or to change the tooth thickness for each group, the reference pitch line P and tooth bottom line 0 are set relative to the die bottom surface Q. It's changing.
尚、基準ピッチ線Ｐと歯底線０は互いに平行としてい４
る。また、ピッチ線上の歯厚は、すべての歯において同
一である。喰付歯群Ａにおいては、基準ピッチ線Ｐおよ
び歯底線０が仕上歯群Ｂに向うに従つてダイス底面Ｑに
対して上り勾配となるように構成されている。Note that the reference pitch line P and tooth bottom line 0 are parallel to each other.
Ru. Moreover, the tooth thickness on the pitch line is the same for all teeth. In the biting tooth group A, the reference pitch line P and tooth bottom line 0 are configured to have an upward slope with respect to the die bottom surface Q as they move toward the finished tooth group B.
したがつて、各歯の歯厚は仕上歯群に向うに従つて順次
大きくなる。具体的に云えば、１つの歯の歯厚ＷＡ−１
はそれに隣接する仕上歯群Ｂ寄りの歯の歯厚ＷＡ−２よ
り小さい。このように構成することによつて、転造加工
時に、平ダイスの喰付歯が被加工物の歯のブランクに対
して一歯毎に押込深さを順次増加してゆき、つまソー歯
毎に転造圧が順次増加してゆき、所謂被加工物に対すノ
る喰付が良好に行なわれる。第１仕上歯群Ｂ１において
は、基準ピッチ線Ｐおよび歯底線０は夫々ダイス底面Ｑ
に対して平行としている。Therefore, the thickness of each tooth increases in sequence toward the finished tooth group. Specifically speaking, the tooth thickness of one tooth WA-1
is smaller than the tooth thickness WA-2 of the adjacent tooth closer to the finished tooth group B. With this configuration, during rolling processing, the biting teeth of the flat die sequentially increase the depth of penetration into the tooth blank of the workpiece, tooth by tooth, and The rolling pressure is gradually increased, so that the so-called "rolling" on the workpiece is performed satisfactorily. In the first finished tooth group B1, the reference pitch line P and the tooth bottom line 0 are respectively the die bottom surface Q
It is parallel to.
つまり、各歯は完全に同一歯形をなしており、各歯の歯
厚ＷＢｌは互いに同一である。門歯厚ＷＢｌは喰付歯群
の最終歯の歯厚ＷＡ−２と同一又は若干大きい。第２仕
上歯群Ｂ２においては、基準ピッチ線Ｐおよび歯底線０
は、第１仕上歯群２と同様にダイス底面に対して平行で
あつて各歯形および各歯゛厚を夫々同一としているが、
ダイス底面に対する距離を若干短寸に構成することによ
り、その歯ＷＢ２を第１仕上歯群Ｂ１の歯厚ＷＢｌより
若干小さくしている。In other words, each tooth has a completely identical tooth profile, and the tooth thickness WBl of each tooth is the same. The incisor thickness WBl is the same as or slightly larger than the tooth thickness WA-2 of the final tooth of the biting tooth group. In the second finished tooth group B2, the reference pitch line P and the tooth bottom line 0
are parallel to the bottom surface of the die similarly to the first finishing tooth group 2, and each tooth profile and each tooth thickness are the same,
By configuring the distance to the die bottom surface to be slightly shorter, the tooth WB2 is made slightly smaller than the tooth thickness WBl of the first finished tooth group B1.
その差は５μ〜２０μ程度である。第１および第２の仕
上歯群Ｂｌ，式は被加工物の歯のブランクに対して第５
図に示す如く作用する。すなわち、先ず第１仕上歯群Ｂ
１の各歯は、ブランク歯形ｆ１（一点鎖線で示している
）に対応していて、該歯形ｆ１を創成すべくブランクに
作用する。第１仕上歯群Ｂ１の各歯の転造圧が解除され
ると、ブランクは弾性変形した量だけ復帰し、ブランク
歯形Ｆ″となる。次いで、ブランク歯形Ｆ２（二点鎖線
で示している）に対応する第２仕上歯群への各歯は歯形
Ｆ２を創成すべくブランクに作用する。第２仕上歯群Ｂ
２の各歯の転造圧が解除されると、ブランクは弾性変形
量だけ復帰し、所望のブランク歯形Ｆとなる。つまり、
この仕上歯群Ｂは、小群Ｂ１とＢ２の二段階で小刻みに
所望のブランク歯形Ｆに近づけてゆく手法をとつている
ので、ブランク歯形を最終的に決定づける小群八による
被加工物の塑性変形量および弾性変形量は非常に小さく
なり、したがつて、所望のブランク歯形Ｆを精度良く実
現することができる。逃歯群Ｃは、その歯群構成が喰付
歯群Ａの歯群構成と大略対称になつており、基準ピッチ
線Ｐおよび歯底線０は夫々ダイス底面Ｑに対して、仕上
歯群Ｂから遠去かるに従つて下り勾配を呈している。尚
この勾配は喰付歯群の勾配よりも大きい。したがつて、
各歯の歯厚は仕上歯群Ｂから遠去かるに従つて順次小さ
くなる。具体的に云えば、１つの歯の歯厚ＷＣ−２はそ
れに隣接する仕上歯群Ｂ寄りの歯の歯厚ＷＣ−１より若
干小さい。このように構成することによつて、転造加工
時に、平ダイスの被加工物に対する転造圧が一歯毎に徐
々に解除されてゆき、平ダイスは被加工物から支障なく
外れることが可能となる。尚、第１および第２の仕上歯
群Ｂｌ，Ｂ２の歯数は夫々少なくとも被加工物に付与す
べき歯数の１１２とすることは云うまでもない。周知の
ように平ダイスは対として用いられるので、被加工物が
１回転するとき、片側の平ダイスは被加工物の半回転分
だけ移動する。したがつて、各群Ｂｌ，Ｂ２は、被加工
物の歯数の１１２以上有することによつて、夫々被加工
物の全歯を少なくとも１回は転造加工することができる
のである。上記実施例では、仕上歯群Ｂを２つの小群Ｂ
ｌ，Ｂ２に区分けしているが、本発明は、仕上歯群Ｂを
多数に区分けすることを望旨とするものてあり、例えは
３つあるいはそれ以上の小群に区分けすることもてきる
。The difference is about 5μ to 20μ. The first and second finishing teeth group Bl, the formula is 5th for the tooth blank of the workpiece
It works as shown in the figure. That is, first, the first finished tooth group B
Each tooth of No. 1 corresponds to a blank tooth profile f1 (indicated by a dashed line) and acts on the blank to create the tooth profile f1. When the rolling pressure of each tooth of the first finished tooth group B1 is released, the blank returns by the amount of elastic deformation and becomes a blank tooth profile F''.Next, the blank tooth profile F2 (indicated by a two-dot chain line) Each tooth to the second finishing tooth group corresponding to acts on the blank to create tooth profile F2.Second finishing tooth group B
When the rolling pressure of each tooth of No. 2 is released, the blank returns by the amount of elastic deformation and assumes the desired blank tooth profile F. In other words,
This finishing tooth group B uses a method of gradually approaching the desired blank tooth profile F in two stages of small groups B1 and B2, so the plasticity of the workpiece due to the small group 8, which ultimately determines the blank tooth profile. The amount of deformation and the amount of elastic deformation become extremely small, so that the desired blank tooth profile F can be achieved with high precision. The tooth group configuration of the escape tooth group C is approximately symmetrical to the tooth group configuration of the biting tooth group A, and the reference pitch line P and tooth root line 0 are respectively from the finished tooth group B to the die bottom surface Q. It has a downward slope as it gets farther away. Note that this slope is larger than the slope of the biting tooth group. Therefore,
The thickness of each tooth becomes smaller as the distance from the finished tooth group B increases. Specifically, the tooth thickness WC-2 of one tooth is slightly smaller than the tooth thickness WC-1 of the adjacent tooth closer to the finished tooth group B. With this configuration, during rolling, the rolling pressure of the flat die against the workpiece is gradually released tooth by tooth, and the flat die can be removed from the workpiece without any trouble. becomes. It goes without saying that the number of teeth of the first and second finishing tooth groups Bl and B2 is at least 112, which is the number of teeth to be provided on the workpiece. As is well known, flat dies are used in pairs, so that when the workpiece rotates once, one flat die moves by half a revolution of the workpiece. Therefore, each of the groups B1 and B2 has 112 or more of the teeth of the workpiece, so that each of the groups B1 and B2 can roll all the teeth of the workpiece at least once. In the above embodiment, the finishing tooth group B is divided into two small groups B.
However, the present invention aims to divide the finished tooth group B into a large number of groups, for example, it can be divided into three or more small groups. .
被加工物の加工精度の観点からは区分け数が大きい程良
いが、これは平ダイスの長さ寸法限界条件との関係て決
める必要がある。小型歯車転造用平ダイスの場合は、仕
上歯群Ｂをたとえ３以上に区分けしても、平ダイスの長
さ寸法を特別長くする必要がないので、実施可能である
。次に、第６，７図に基づいてむく転造に好適な平ダイ
スについて説明する。From the viewpoint of processing accuracy of the workpiece, the larger the number of divisions, the better, but this must be determined in relation to the length dimension limit conditions of the flat die. In the case of a flat die for small gear rolling, even if the finishing tooth group B is divided into three or more, it is possible to implement this because there is no need to make the length of the flat die particularly long. Next, a flat die suitable for peeling and rolling will be explained based on FIGS. 6 and 7.
このむく転造用平ダイスは、前記の仕上転造用平ダイス
の基本的特徴点は備えているが、仕上転造用平ダイスと
異なつて被加工物の歯形のブランクのみならず歯底の加
工も行なうので、歯先線ｍはダイス底面Ｑに対して変化
し、その変化は基準ピッチ線Ｐ、歯底線０と同様である
。This flat rolling die has the basic characteristics of the flat die for finish rolling described above, but unlike the flat die for finishing rolling, it not only blanks the tooth profile of the workpiece but also the bottom of the tooth. Since machining is also performed, the tooth tip line m changes with respect to the die bottom surface Q, and the change is similar to the reference pitch line P and the tooth bottom line 0.
つまり、歯先線ｍはピッチ線Ｐや歯底線０と平行てある
。したがつて、喰付歯群Ａにおいては、仕上歯群Ｂに近
すくに従つて、各歯の歯先からダイス底面Ｑに至る距離
が順次増加し、具体的には、１つの歯の距離ＬＡ−１は
該歯に隣り合う仕上歯群Ｂ寄りの歯の距離ＬＡ−２より
若干小さい。また、第１仕上歯群Ｂ１にいては、各歯の
歯先からダイス底面Ｑまでの距離ＬＢｌは全て同一であ
り、この距離ＬＢｌは喰付歯群Ａの最終歯の距離ＬＡ−
２と同一又はそれより若干大きい。また第２仕上歯群■
においては、各歯の歯先からダイス底面Ｑまでの距離Ｌ
Ｂ２は全て同一であるが、該距離ＬＢ２は前記距離ＬＢ
ｌより若干小さい。さらに逃歯群Ｃにおいて、各歯の歯
先からダイス底面Ｑまでの距離は順次減少し、具体的に
は、１つの歯の距離１５，Ｃ一２は、該歯に隣り合う仕
上歯群Ｂ寄りの歯の距離ＬＣ−１より若干小さい。この
むく転造用平ダイスの構成は、各歯の歯先からダイス底
面までの距離に関しては、前記仕上転造用平ダイスの構
成と異なるがその他の構成は全く同一である。In other words, the tooth tip line m is parallel to the pitch line P and the tooth bottom line 0. Therefore, in the biting tooth group A, the distance from the tip of each tooth to the die bottom surface Q increases sequentially as it gets closer to the finished tooth group B. Specifically, the distance of one tooth increases. LA-1 is slightly smaller than the distance LA-2 between the teeth adjacent to the tooth near the finished tooth group B. In addition, in the first finishing tooth group B1, the distance LBl from the tip of each tooth to the die bottom surface Q is all the same, and this distance LBl is the distance LA− of the final tooth of the biting tooth group A.
Same as or slightly larger than 2. Also, the second finishing tooth group■
, the distance L from the tip of each tooth to the bottom surface of the die Q
B2 are all the same, but the distance LB2 is the distance LB
Slightly smaller than l. Furthermore, in the missing tooth group C, the distance from the tip of each tooth to the die bottom surface Q decreases sequentially, and specifically, the distance 15, C-2 of one tooth is equal to the finished tooth group B adjacent to that tooth. The distance between the closer teeth is slightly smaller than the distance LC-1. The configuration of this flat die for peel rolling differs from the configuration of the flat die for finish rolling with respect to the distance from the tip of each tooth to the bottom surface of the die, but the other configurations are exactly the same.
上記構成の転造用平ダイスによれは、仕上歯群Ｂにおい
て、被加工物に対して、歯のクランクのみならずその歯
底にも精度の高い転造加工を行うことができる。With the flat rolling die having the above configuration, it is possible to perform highly accurate rolling on the workpiece in the finished tooth group B, not only on the crank of the tooth but also on the bottom of the tooth.
以上、実施例の具体的説明から明らかなように、本発明
の第１は、仕上歯群を２以上の小群に区分けしかつ小群
毎に歯の厚み寸法を変化せしめて、被加工物の歯のブラ
ンクを段階的に仕上げるようにしたので、弾性変形に起
因する加工誤差を小さくすることができる。As is clear from the above detailed description of the embodiments, the first aspect of the present invention is to divide the finished tooth group into two or more small groups, and change the thickness dimension of the teeth for each small group, so that the workpiece can be Since the tooth blank is finished in stages, machining errors caused by elastic deformation can be reduced.
また本発明の第２は、第１発明の構成に加えて、仕上歯
群の小群毎に歯先のダイス底面に対する距離を変化せし
めて、被加工物の歯のブランクのみならず歯底をも段階
的・に仕上げるようにしたのて、精度の良いむく転造を
行うことができる。In addition to the configuration of the first invention, the second aspect of the present invention is to change the distance of the tooth tip to the bottom surface of the die for each small group of finishing teeth, so that not only the tooth blank of the workpiece but also the tooth bottom is By finishing the material in stages, it is possible to perform strip rolling with high precision.
第１図は従来の平ダイスを示す説明図、第２図は転造加
工の弾性変形を示す説明図、第３〜７図・は本発明の実
施例を示し、第３図は仕上転造用平ダイスの概略側面図
、第４図は第３図における平ダイスの歯形状を具体的に
示す説明図、第５図は第３，４図の平ダイスの仕上歯群
Ｂｌ，Ｂ２の転造状態を示す説明図、第６図はむく転造
用平ダイスノの概略側面図、第７図は第６図の平ダイス
の歯形状を具体的に示す説明図である。
Ａ・・・喰付歯群、Ｂ・・・仕上歯群、司・・・第１仕
上歯群、八・・・第２仕上歯群、Ｃ・・・逃歯群、ｍ・
・・歯先線、ｎ・・・基準平行線、０・・・歯底線、Ｐ
・・・基準ピツチ線、Ｑ・・・ダイス底面、ＬＡ，ＬＢ
ｌ，ＬＢ，，ＬＣ，ＬＡ−１，ＬＡ−２，ＬＣ−１，Ｌ
Ｃ−２・・・歯先からダイス・底面までの距離、ＷＡ−
１，ＷＡ−２，ＷＢ．，ＷＢ２，ＷＣ−１，ＷＣ−２・
・・基準平行線上の歯厚。Fig. 1 is an explanatory diagram showing a conventional flat die, Fig. 2 is an explanatory diagram showing elastic deformation during rolling, Figs. 3 to 7 show examples of the present invention, and Fig. 3 is a diagram showing finish rolling. A schematic side view of the flat die, FIG. 4 is an explanatory diagram specifically showing the tooth shape of the flat die in FIG. 3, and FIG. FIG. 6 is a schematic side view of a flat die for peel rolling, and FIG. 7 is an explanatory diagram specifically showing the tooth shape of the flat die shown in FIG. 6. A... Biting tooth group, B... Finishing tooth group, Main... 1st finishing tooth group, 8... 2nd finishing tooth group, C... Missing tooth group, m.
...Tooth tip line, n...Reference parallel line, 0...Tooth bottom line, P
...Reference pitch line, Q...Bottom of die, LA, LB
l, LB,, LC, LA-1, LA-2, LC-1, L
C-2...Distance from the tooth tip to the die/bottom surface, WA-
1, WA-2, WB. , WB2, WC-1, WC-2・
...Tooth thickness on the reference parallel line.
Claims (1)
逃歯群を形成してなる転造用平ダイスにおいて、上記仕
上歯群をさらに複数の小群で構成するとともに、逃歯群
寄りの小群の各歯の歯厚を該小群に隣り合う喰付歯群寄
りの小群の各歯の歯厚より若干小さくなるように構成し
たことを特徴とする転造用平ダイス。 ２ 歯面長手方向沿いに順に喰付歯群、仕上歯群、およ
び逃歯群を形成してなる転造用平ダイスにおいて、上記
仕上歯群をさらに複数の小群で構成するとともに、逃歯
群寄りの小群の各歯の歯厚を該小群に隣り合う喰付歯群
寄りの小群の各歯の歯厚より若干小さく、かつ逃歯群寄
りの小群の各歯の歯先のダイス底面よりの距離が該小群
に隣り合う喰付歯群寄りの小群の歯先のダイス底面より
の距離より若干小さくなるように構成したことを特徴と
する転造用平ダイス。[Scope of Claims] 1. A flat rolling die in which a biting tooth group, a finishing tooth group, and a relief tooth group are formed in order along the longitudinal direction of the tooth surface, wherein the finishing tooth group is further composed of a plurality of small groups. In addition, the tooth thickness of each tooth in the small group closer to the missing tooth group is configured to be slightly smaller than the tooth thickness of each tooth in the small group adjacent to the biting tooth group adjacent to the small group. Flat die for rolling. 2. In a flat rolling die in which a biting tooth group, a finishing tooth group, and a relief tooth group are formed in order along the longitudinal direction of the tooth surface, the finishing tooth group is further composed of a plurality of small groups, and a relief tooth group is formed in order. The thickness of each tooth in the small group near the group is slightly smaller than the thickness of each tooth in the small group near the biting tooth group adjacent to the small group, and the tip of each tooth in the small group near the missing tooth group. A flat die for rolling, characterized in that the distance from the bottom surface of the die is slightly smaller than the distance from the bottom surface of the die to the tips of the teeth of a small group adjacent to the biting tooth group adjacent to the small group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57050862A JPS6045972B2 (en) | 1982-03-29 | 1982-03-29 | Flat die for rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57050862A JPS6045972B2 (en) | 1982-03-29 | 1982-03-29 | Flat die for rolling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58167043A JPS58167043A (en) | 1983-10-03 |
| JPS6045972B2 true JPS6045972B2 (en) | 1985-10-14 |
Family
ID=12870526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57050862A Expired JPS6045972B2 (en) | 1982-03-29 | 1982-03-29 | Flat die for rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6045972B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4306742A1 (en) * | 1993-03-04 | 1994-09-08 | Zahnradfabrik Friedrichshafen | Tool and method for the non-cutting production of the external toothing of gear wheels |
| US20060169015A1 (en) * | 2005-01-28 | 2006-08-03 | Garver Michael A | Major diameter correcting re-roll thread rolling die |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036346A (en) * | 1973-06-22 | 1975-04-05 |
-
1982
- 1982-03-29 JP JP57050862A patent/JPS6045972B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036346A (en) * | 1973-06-22 | 1975-04-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58167043A (en) | 1983-10-03 |
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