JPH08155578A - Formation of gear - Google Patents

Formation of gear

Info

Publication number
JPH08155578A
JPH08155578A JP33151194A JP33151194A JPH08155578A JP H08155578 A JPH08155578 A JP H08155578A JP 33151194 A JP33151194 A JP 33151194A JP 33151194 A JP33151194 A JP 33151194A JP H08155578 A JPH08155578 A JP H08155578A
Authority
JP
Japan
Prior art keywords
gear
forming
gear material
tooth
die
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
Application number
JP33151194A
Other languages
Japanese (ja)
Other versions
JP3660705B2 (en
Inventor
Moritoshi Kimura
守利 木村
Masahide Kamiya
雅英 神谷
Shuichi Takayama
修一 高山
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.)
AICHI KIKI KK
Honda Motor Co Ltd
Original Assignee
AICHI KIKI KK
Honda 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 AICHI KIKI KK, Honda Motor Co Ltd filed Critical AICHI KIKI KK
Priority to JP33151194A priority Critical patent/JP3660705B2/en
Publication of JPH08155578A publication Critical patent/JPH08155578A/en
Application granted granted Critical
Publication of JP3660705B2 publication Critical patent/JP3660705B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To provide a forming method for efficiently and inexpensively forming and deforming a blank for gear with high precision. CONSTITUTION: In the method for forming the gear by approaching a punch 1 for heading to a die 2 for heading in which the blank 3 for gear is set, at least three or more positions out of each surface 33-36 and both upper and lower end edge parts 31, 32 of the blank 3 for gear in one process where the punch 1 for heading is moved from a top dead center to a bottom dead center are formed and deformed. A first chamfer tooth 11a is provided near the edge of lower surface 11 of the pinch 1 for heading, and a guide bar 11b for phase matching is arranged projectingly from the lower surface 11. A second chamfer tooth 21a is provided near the edge of bottom surface 21 of a hole part 28 for forming of the die 2 for heading, and an insert hole 21b can be provided on the bottom surface 21. Further, a forming tooth 22a can be provided on the inner peripheral surface of the hole part 28 for forming. Further, instead of the guide bar 11b for phase matching, a piecing bar for working the inner surface can be used.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、歯車の成形方法に関
し、更に、詳しく言えば、歯車用素材を高精度で、効率
的、且つ安価に成形変形するための成形方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for molding a gear, and more particularly, to a molding method for deforming a gear material with high accuracy, efficiency, and cost.

【0002】[0002]

【従来の技術】従来より、冷間若しくは熱間圧造(鍛
造)を用い、所定の歯車用素材を所望の形状に押し潰し
たり、同素材をしごいたりして歯車の製造が行われてき
た。
2. Description of the Related Art Heretofore, a gear has been manufactured by crushing a predetermined gear material into a desired shape or squeezing the material by using cold or hot forging. .

【0003】[0003]

【発明が解決しようとする課題】しかしながら、これら
の場合に、歯車用素材の側面への歯形成、同素材の内面
加工、同素材の端縁部の面取り加工等を、それぞれ別工
程で行うことが多い。従って、工程数が多く、また工程
が変わる毎に治工具を取り変える手間が掛かるため、生
産性が低く、また製造コストが高くなっていた。
However, in these cases, the formation of teeth on the side surface of the gear material, the inner surface processing of the same material, the chamfering processing of the edge portion of the same material, etc. are performed in separate steps. There are many. Therefore, the number of steps is large, and it takes time and effort to change the jig and tool every time the steps are changed, resulting in low productivity and high manufacturing cost.

【0004】また、従来の方法では、加工精度の面でも
問題となることが多かった。例えば、歯車用素材の上下
両端部の面取り加工を行う場合は、先ず、一方の端縁部
の加工を行った後に、歯車用素材を裏返して他方の端縁
部の加工を行っていた。この場合、両端縁部の面取り箇
所の相対的な位置関係が任意であれば問題はないが、指
定されている場合(例えば、両端部に形成するチャンフ
ァーの山同志、谷同志を同一同芯に揃えたい場合)に
は、両面取り箇所の位相(位置)合わせが必要となる。
この位相(位置)合わせは、一般に位相合せ治具を用い
て行うが、その作業は面倒であり、時間が掛かると共
に、誤差を生じ易い。そして、この様な誤差を生ずれ
ば、所望の加工精度が得られないからである。
Further, the conventional method often has a problem in terms of processing accuracy. For example, when chamfering both upper and lower ends of a gear material, first, one edge portion is processed, and then the gear material is turned over to process the other edge portion. In this case, there is no problem as long as the relative positional relationship of the chamfered portions at both end portions is arbitrary, but when specified (for example, the chamfers formed at both ends have the same mountain and the same valley as the same chamfer). (If you want to align), it is necessary to align the phase (position) of both sides.
This phase (position) alignment is generally performed using a phase alignment jig, but the work is tedious, time consuming, and error-prone. And if such an error is produced, a desired processing accuracy cannot be obtained.

【0005】本発明は、上記問題点を解決するものであ
り、歯車用素材を高精度で、効率的、且つ安価に成形変
形するための成形方法を提供することを目的とする。
The present invention is intended to solve the above problems, and an object of the present invention is to provide a forming method for forming and deforming a gear material with high accuracy, efficiency and at low cost.

【0006】[0006]

【課題を解決するための手段】本第1発明の歯車の成形
方法は、成形用穴部に所定の歯車用素材をセットした所
定の圧造用ダイに、所定の圧造用パンチを近接させて、
該歯車用素材の成形変形を行い歯車を成形する方法にお
いて、上記パンチが上死点から下死点まで移動する一の
工程で、上記歯車用素材の各面及び上下両端縁部のうち
の少なくとも三箇所以上の成形変形を行うことを特徴と
する。上記「各面」としては、例えば、上記「歯車用素
材」が略円筒状の素材であれば、その側面(外周面)、
内面(内周面)及び上下両面をいう。また、上記「歯車
用素材」は、粗加工の施されていない無垢の素材であっ
ても、予め、粗加工のされた素材であってもよい。
According to a first aspect of the present invention, there is provided a method for forming a gear, wherein a predetermined forging die is provided with a predetermined gear material set in a forming hole, and a predetermined forging die is brought close to the die.
In the method of shaping the gear material by shaping and deforming the gear, in one step in which the punch moves from the top dead center to the bottom dead center, at least one of the surfaces of the gear material and the upper and lower end edge portions are formed. It is characterized by performing molding deformation at three or more places. As the “each surface”, for example, if the “gear material” is a substantially cylindrical material, its side surface (outer peripheral surface),
Inner surface (inner peripheral surface) and upper and lower surfaces. Further, the "gear material" may be a solid material that has not been rough-processed or a material that has been rough-processed in advance.

【0007】本第2発明に示す様に、上記パンチの上記
歯車用素材の上面との当接面となる下面の周縁寄りに第
1面取り歯が設けられ、且つ、該下面の略中心より、位
相合せ用案内棒(以下、「案内棒」という。)が突出配
置されていると共に、上記成形用穴部の上記歯車用素材
の下面との当接面となる底面の周縁寄りに第2面取り歯
が設けられ、且つ、該底面の略中心に上記位相合せ用案
内棒の少なくとも先端側が摺動可能な状態で差し込める
挿入穴が設けられてもよい。上記各「面取り歯」が、歯
車用素材に形成する面の種類は特に問わないが、例え
ば、「チャンファ面」、「C面」等を例示できる。
As shown in the second aspect of the present invention, the first chamfered teeth are provided near the periphery of the lower surface which is the contact surface with the upper surface of the gear material of the punch, and from the substantial center of the lower surface, A phasing guide rod (hereinafter referred to as "guide rod") is arranged so as to project, and a second chamfer is provided near the periphery of the bottom surface that is the contact surface of the molding hole portion with the lower surface of the gear material. Teeth may be provided, and an insertion hole into which at least the tip end side of the phase adjustment guide rod can be slidably inserted may be provided substantially at the center of the bottom surface. The type of the surface formed on the gear material for each of the above “chamfered teeth” is not particularly limited, and examples thereof include a “chamfer surface” and a “C surface”.

【0008】また、上記「案内棒」の外形、断面形状等
は、本発明の目的を達成できる限り特に問わない。例え
ば、断面形状が多角形、円形、楕円形の案内棒等を例示
できる。但し、より正確な位相合わせを行うためには、
非対称な断面形状、対称軸の少ない断面形状(台形等)
とすることが好ましい。更に、上記「挿入穴」の断面形
状等は、この案内棒の外形、断面形状等に対応して選択
されることとなる。
Further, the outer shape and the cross-sectional shape of the "guide rod" are not particularly limited as long as the object of the present invention can be achieved. For example, a guide rod having a polygonal shape, a circular shape, or an elliptical cross section can be exemplified. However, in order to perform more accurate phase adjustment,
Asymmetrical cross-sectional shape, cross-sectional shape with few axes of symmetry (trapezoid etc.)
It is preferable that Further, the cross-sectional shape and the like of the "insertion hole" will be selected according to the outer shape and cross-sectional shape of the guide rod.

【0009】本第3発明に示す様に、上記圧造用パンチ
の上記歯車用素材の上面との当接面となる下面の周縁寄
りに第1面取り歯が設けられ、且つ、該下面の略中心よ
り、上記歯車用素材の内面加工を行う内面加工用矢通し
棒(以下、「矢通し棒」という。)が突出配置されてい
ると共に、上記成形用穴部の上記歯車用素材の下面との
当接面となる底面の周縁寄りに第2面取り歯が設けられ
てもよい。本発明は、上記第2発明における「案内棒」
を上記「矢通し棒」に取り替えたものである。この案内
棒は、歯車用素材が筒状である場合に、その内面加工を
行うものである。例えば、案内棒として内面加工用のブ
ローチ、きりスリーブ等を例示できる。
As shown in the third aspect of the present invention, a first chamfering tooth is provided near the peripheral edge of the lower surface which is the contact surface with the upper surface of the gear material of the forging punch, and the lower surface is substantially centered. The inner surface of the gear material is formed with an inner threading rod (hereinafter, referred to as "arrow threading rod") protruding from the inner surface of the gear material. The second chamfered teeth may be provided near the periphery of the bottom surface that is the contact surface. The present invention is the "guide rod" in the second invention.
Is replaced with the above-mentioned "arrow-bar". This guide rod is used to process the inner surface of the gear material when it has a tubular shape. For example, the guide rod may be a broach for inner surface processing, a cutting sleeve, or the like.

【0010】本第4発明に示す様に、上記圧造用ダイの
上記成形用穴部の上記歯車用素材の側面との当接面とな
る内周面に、歯形成を行う成型歯を備えていてもよい。
本発明は、歯車用素材の側面(周面)への歯形成を行う
ものである。この場合に、本第5発明に示す様に、上記
圧造用ダイが、上記第2面取り歯を有する面取り下型部
と、該面取下型部の上に位置合わせした状態で載置さ
れ、内周面に上記成型歯を有する略ドーナツ形状の輪型
部と、を備えたものであってもよい。但し、圧造用ダイ
の構成は、この第5発明に示すものに限られるものでは
ない。
As shown in the fourth aspect of the present invention, a molding tooth for forming a tooth is provided on the inner peripheral surface of the molding hole of the forging die, which is the contact surface with the side surface of the gear material. May be.
The present invention forms teeth on the side surface (circumferential surface) of a gear material. In this case, as shown in the fifth aspect of the invention, the forging die is placed in a state of being aligned with the chamfering lower mold part having the second chamfering teeth, and the chamfering lower mold part, A substantially donut-shaped ring-shaped portion having the above-mentioned molding tooth on the inner peripheral surface may be provided. However, the structure of the die for forging is not limited to that shown in the fifth invention.

【0011】[0011]

【作用】本第1発明の成形方法では、圧造用パンチ(以
下、「パンチ」という。)が上死点から下死点まで移動
する一の工程で、歯車用素材の少なくとも三箇所以上の
成形変形を行う。従って、歯車の成形に要する工程数が
減り、製造効率の向上、製造コストの低廉等を図ること
ができる。
According to the forming method of the first aspect of the present invention, the press punch (hereinafter referred to as "punch") is moved from the top dead center to the bottom dead center in one step, and at least three or more parts of the gear material are formed. Deform. Therefore, the number of steps required to form the gear can be reduced, and the manufacturing efficiency can be improved and the manufacturing cost can be reduced.

【0012】本第2発明では、パンチの下面の周縁寄り
に第1面取り歯が設けられ、圧造用ダイ(以下、「ダ
イ」という。)の成形用穴部の底面の周縁寄りに第2面
取り歯が設けられている。従って、歯車用素材の上下両
端縁部の面取り成形を上記「一の工程」で行うことがで
きる。しかも、上記下面の略中心より、案内棒が突出配
置されていると共に、上記底面の略中心に、この案内棒
の少なくとも先端側を摺動可能な状態で差し込める挿入
穴が設けられている。
In the second aspect of the present invention, the first chamfered tooth is provided near the periphery of the lower surface of the punch, and the second chamfer is formed near the periphery of the bottom surface of the forming hole of the forging die (hereinafter referred to as "die"). Tooth is provided. Therefore, the chamfering of the upper and lower edges of the gear material can be performed in the "one step". Moreover, the guide rod is arranged so as to project from the substantial center of the lower surface, and an insertion hole into which at least the distal end side of the guide rod can be slidably inserted is provided at the approximate center of the bottom surface.

【0013】従って、パンチを上死点から下死点に移動
させる際、この案内棒の先端側がこの挿入穴に嵌まり込
む様にするだけで、パンチ及びダイの位置関係が一義的
に定まる。このため、両端縁部の面取り(箇所)の相対
的な位置関係が指定されている場合でも、各面取り歯の
配置さえ正確であれば、敢えて、位相合わせの作業を行
う必要はない。この結果、より一層の製造効率の向上、
製造コストの低廉が図られると共に、所望の加工精度を
確実に得ることができる。
Therefore, when the punch is moved from the top dead center to the bottom dead center, the positional relationship between the punch and the die is uniquely determined only by fitting the tip side of the guide rod into the insertion hole. For this reason, even if the relative positional relationship of the chamfers (locations) at both end edges is specified, it is not necessary to dare to perform the phase matching work as long as the arrangement of each chamfer tooth is correct. As a result, further improvement in manufacturing efficiency,
It is possible to reduce the manufacturing cost and surely obtain a desired processing accuracy.

【0014】また、本第3発明では、上記第2発明の案
内棒の代わりに、パンチの下面の略中心より、内面加工
用の矢通し棒を突出配置する。従って、歯車用素材が筒
状である場合に、上記「一の工程」において、内面加工
を行うことができる。本第4発明では、ダイの成形用穴
部の内周面に歯形成を行う成型歯が設けられている。従
って、上記の「一の工程」において、歯車用素材への歯
形成を行うことができる。
Further, in the third aspect of the invention, instead of the guide rod of the second aspect of the invention, an arrow-piercing rod for processing the inner surface is arranged so as to project from substantially the center of the lower surface of the punch. Therefore, when the material for gears is tubular, the inner surface processing can be performed in the "one step". In the fourth aspect of the present invention, molding teeth for forming teeth are provided on the inner peripheral surface of the molding hole of the die. Therefore, it is possible to form teeth on the gear material in the above "one step".

【0015】[0015]

【実施例】以下、実施例により本発明を具体的に説明す
る。 (1)実施例1 本実施例では、図1に示す様なパンチ1及びダイ2を用
いて歯車用素材3の成形を行った。但し、この図は、パ
ンチ1が上死点にある状態を示す一部斜視図である。上
記パンチ1は、下端側が略円柱状のものであり、下面1
1の周縁寄りに第1面取り歯11aを備えると共に、下
面11の略中心側に、下方側に突出配置された案内棒1
1bを備えている。
The present invention will be described below in detail with reference to examples. (1) Example 1 In this example, a gear material 3 was molded using a punch 1 and a die 2 as shown in FIG. However, this figure is a partial perspective view showing the state in which the punch 1 is at the top dead center. The punch 1 has a substantially cylindrical shape at the lower end side, and has a lower surface 1
The guide bar 1 is provided with a first chamfered tooth 11a near the peripheral edge of the guide rod 1 and is arranged so as to protrude downward on the substantially center side of the lower surface 11.
1b is provided.

【0016】このうち、第1面取り歯11aは、歯車用
素材3の上方側の端縁部31にチャンファーを形成する
ものであり、上記下面11の周縁に沿って略山状の突起
を多数並べたものである。また、上記案内棒11bは、
略矩形状の横断面を有している。但し、案内棒11bの
横断面形状は、これ限るものではなく、三角形、矩形、
台形、菱形、楕円形等とすることもできる。
Of these, the first chamfered tooth 11a forms a chamfer at the upper edge portion 31 of the gear material 3, and has a large number of substantially mountain-shaped projections along the peripheral edge of the lower surface 11. They are arranged. Also, the guide rod 11b is
It has a substantially rectangular cross section. However, the cross-sectional shape of the guide rod 11b is not limited to this, but may be a triangle, a rectangle,
It can also be trapezoidal, rhombic, elliptical or the like.

【0017】上記ダイ2は、略円筒形の容器状のもので
あり、下方側に配置される面取り下型部21と、その上
に載置された輪型部22とを備えている。このうち、面
取り下型部21は、上記ダイ2の底面側を構成するもの
であり、周縁側に、上記第1面取り歯11aと同様な第
2面取り歯21aを備えている。この第2面取り歯21
aは、歯車用素材3の下方側の端縁部32に、チャンフ
ァーを形成するものである。そして、これらの面取り歯
11a、21aは、互いの山同志、及び谷同志を、同芯
同位置に位置合わせした状態になる。尚、本実施例で
は、各面取り歯11a、21aをチャンファーを形成す
るためのものとしたが、C面、波形面、若しくはその他
の種類の面を形成するのものとしてもよい。
The die 2 has a substantially cylindrical container shape, and includes a chamfering lower mold part 21 arranged on the lower side and a ring-shaped part 22 mounted thereon. Of these, the chamfering lower mold part 21 constitutes the bottom surface side of the die 2, and is provided with the second chamfering teeth 21a similar to the first chamfering teeth 11a on the peripheral side. This second chamfer 21
The letter a forms a chamfer on the lower edge 32 of the gear material 3. And these chamfered teeth 11a and 21a will be in the state which matched the mountain comrade and the valley comrade with each other in the concentric same position. In this embodiment, the chamfered teeth 11a and 21a are used to form chamfers, but they may be C-faces, corrugated faces, or other types of faces.

【0018】また、上記下型部21の略中央寄りには、
上記案内棒11bの外形形状に対応した穴形状を備えた
角形穴21bを備えている。この角形穴21bは、上記
パンチ1が下死点側に移動してきたときに、案内棒11
bの先端側を摺動状態で差し込めるものである。
Further, near the center of the lower mold portion 21,
A square hole 21b having a hole shape corresponding to the outer shape of the guide rod 11b is provided. The square hole 21b is provided in the guide rod 11 when the punch 1 moves to the bottom dead center side.
The tip side of b is inserted in a sliding state.

【0019】上記輪型部22は、トーナツ状の外形を備
えており、その内周面に歯車用素材3の側面33に歯形
成を行う成型歯22aを備えている。但し、歯車用素材
3の側面33に、必ずしも歯形成を行う必要はなく、例
えば、所定の溝(例えば、ナットの引っかけ溝の様な
溝)を形成してもよい。この場合には、上記成型歯22
aの代わりに、それに相応した歯を用いることになる。
そして、上記下型部21の上に、上記輪型部22が位置
合わせされた状態で載置され、これらにより囲まれ形成
される空間が、ダイ2の成形用穴部28となる。
The ring-shaped portion 22 has a toroidal outer shape, and has on its inner peripheral surface molding teeth 22a for forming teeth on the side surface 33 of the gear material 3. However, it is not always necessary to form teeth on the side surface 33 of the gear material 3, and for example, a predetermined groove (for example, a groove such as a hook groove of a nut) may be formed. In this case, the molding tooth 22
Instead of a, a corresponding tooth will be used.
Then, the ring-shaped portion 22 is placed on the lower die portion 21 in an aligned state, and a space surrounded and formed by these serves as a molding hole portion 28 of the die 2.

【0020】上記歯車用素材3は、略円筒状の外形を備
えており、前加工は何ら施されいない無垢の素材であ
る。但し、この素材3の外形は、これに限るものではな
く、円柱状、角柱状(中空のものを含む。)等の他の形
状の素材とすることもできる。また、この様な無垢の素
材を用いずに、事前に粗加工の施された素材を用いても
よい。例えば、側面33に粗歯が形成されていてもよ
い。この場合には、上記成型歯22aにより、コイニン
グ若しくはサイジング成形を行うことになる。
The gear material 3 has a substantially cylindrical outer shape and is a solid material that has not been subjected to any pre-processing. However, the outer shape of the material 3 is not limited to this, and it may be a material having another shape such as a columnar shape or a prism shape (including a hollow shape). Further, instead of using such a solid material, a material that has been rough-processed in advance may be used. For example, coarse teeth may be formed on the side surface 33. In this case, coining or sizing molding is performed by the molding teeth 22a.

【0021】そして、本実施例では、先ず、図1に示す
様に、パンチ1を上死点に移動した後に、上記ダイ2の
成形用穴部28に歯車用素材3をセットする。そして、
所定のスイッチ(図示せず。)を操作して、パンチ1を
下降させ、その先端側を成形用穴部28に進入させ、更
に、パンチ1を下死点まで下降させて、「一の工程」を
完了する。次いで、パンチ1を上死点に移動した後に、
所定のノックアウト機構(図示しない。)により、成形
された歯車が取り出される。また、以上の操作を順次に
繰り返せば、同様な歯車の成形を連続的に行うことがで
きる。
In this embodiment, first, as shown in FIG. 1, after the punch 1 is moved to the top dead center, the gear material 3 is set in the forming hole portion 28 of the die 2. And
By operating a predetermined switch (not shown), the punch 1 is lowered, the tip side of the punch 1 is inserted into the forming hole portion 28, and the punch 1 is further lowered to the bottom dead center. To complete. Next, after moving the punch 1 to the top dead center,
The molded gear is taken out by a predetermined knockout mechanism (not shown). Further, by repeating the above operation in sequence, it is possible to continuously form similar gears.

【0022】本実施例では、上記の様に、パンチ1を上
死点から下死点に移動させる「一の工程」の間に、歯車
素材3を塑性変形させ、その両端部31、32にチャン
ファーを形成し、側面33に歯を形成できる。この様
に、三箇所の成形変形を一度に行うため、歯車の成形に
要する工程数が減り、製造効率の向上と製造コストの低
廉とを図ることができる。
In the present embodiment, as described above, the gear material 3 is plastically deformed during the "one step" of moving the punch 1 from the top dead center to the bottom dead center, and the both ends 31, 32 of the gear material 3 are plastically deformed. Chamfers can be formed and teeth can be formed on the sides 33. As described above, since the three molding deformations are performed at one time, the number of steps required to mold the gear can be reduced, and the manufacturing efficiency can be improved and the manufacturing cost can be reduced.

【0023】また、パンチ1が下死点へ移動する際、案
内棒11bが、角形穴21bに挿入されるため、パンチ
1はダイ2に対して、正しい位置関係を保ちつことにな
る。このため、チャンファーの山同志、谷同志を同芯同
位置に合わせたい場合でも、上記各面取り歯11a、2
1aの位相合わせのための面倒な作業を行う必要はな
い。尚、上記各チャンファーの位置関係が任意の場合に
は、上記パンチ1より案内棒11bを取り外してもよ
い。
Further, when the punch 1 moves to the bottom dead center, the guide rod 11b is inserted into the rectangular hole 21b, so that the punch 1 maintains the correct positional relationship with the die 2. For this reason, even when it is desired to align the chamfered comrades Yama and Tani to the same position, the chamfered teeth 11a, 2
There is no need to perform a troublesome work for phase matching of 1a. If the positional relationship between the chamfers is arbitrary, the guide rod 11b may be removed from the punch 1.

【0024】(2)実施例2 本実施例では、上記実施例1に示した歯車用素材3の各
箇所の成形に加えて、同素材3の内面34の仕上げ加工
を行ったものである。本実施例で用いたパンチ1cは、
実施例1と同様なパンチ1から、案内棒11bを取り外
し、その代わりに、図2に示す様な矢通し棒11cを取
り付けたものである。この矢通し棒11cは、内面の仕
上げ加工用のブローチである。但し、この矢通し棒11
cは、このブローチに限られるものではなく、内面をテ
ーパーとするためのきりスリーブ等であってもよい。
(2) Embodiment 2 In this embodiment, in addition to the molding of each part of the gear material 3 shown in the above-mentioned Embodiment 1, the inner surface 34 of the material 3 is finished. The punch 1c used in this embodiment is
The guide rod 11b is removed from the punch 1 similar to that of the first embodiment, and instead, the arrow passing rod 11c as shown in FIG. 2 is attached. The arrow rod 11c is a brooch for finishing the inner surface. However, this arrow passing rod 11
c is not limited to this broach, and may be a cutting sleeve or the like for tapering the inner surface.

【0025】また、ダイ2cとして、上記角形穴21b
を備えないものを用いた。更に、本実施例で用いた歯車
用素材(但し、図2への図示を省略した。)は、実施例
1と同様のものである。これら以外の点は、実施例1と
同様である。本実施例では、パンチ1cが上死点より下
死点へと移動する間に、歯車用素材の内面の仕上げ加工
をも行うため、より一層の製造効率の向上、製造コスト
の低廉が図られる。
Further, as the die 2c, the square hole 21b is used.
The one without was used. Further, the gear material used in this embodiment (however, not shown in FIG. 2) is the same as that in the first embodiment. The other points are the same as those in the first embodiment. In this embodiment, since the inner surface of the gear material is also finished while the punch 1c moves from the top dead center to the bottom dead center, the manufacturing efficiency is further improved and the manufacturing cost is further reduced. .

【0026】尚、本実施例では、歯車の成形の際に、案
内棒11bが用いられていない。しかしながら、以下の
方法により、実施例1と同様な精度で、素材の上下両端
部にチャンファーを設けることができる。即ち、実施例
1と同様なダイ2を用いると共に、パンチ1cに矢通し
棒11cではなく、案内棒11bを取り付け、この状態
でパンチ1cを上死点から下死点へと移動させて、ダイ
2及びパンチ1cの位置合わせをしておく。そして、こ
の位置合わせのされた状態のまま、パンチ1cより、案
内棒11bを取り去り、矢通し棒11cを取着すると共
に、ダイ2を構成する部品を取り替え、角形穴21bの
無いダイ2cとしてから、歯車の成形を行えばよい。
In this embodiment, the guide rod 11b is not used when molding the gear. However, by the following method, it is possible to provide the chamfers at the upper and lower ends of the material with the same accuracy as in the first embodiment. That is, the same die 2 as that used in Example 1 is used, and the guide rod 11b is attached to the punch 1c instead of the arrow rod 11c. In this state, the punch 1c is moved from the top dead center to the bottom dead center. 2 and the punch 1c are aligned. Then, in this aligned state, the guide rod 11b is removed from the punch 1c, the arrow-piercing rod 11c is attached, the parts constituting the die 2 are replaced, and the die 2c without the square hole 21b is formed. The gears may be molded.

【0027】尚、本発明においては、前記具体的実施例
に示すものに限られず、目的、用途に応じて本発明の範
囲内で種々変更した実施例とすることができる。即ち、
本実施例では、歯車用素材の外周面に歯形成を行った
が、内周面に歯形成を行うこともできる。
The present invention is not limited to the specific examples described above, but various modifications may be made within the scope of the present invention depending on the purpose and application. That is,
In this embodiment, teeth are formed on the outer peripheral surface of the gear material, but teeth can be formed on the inner peripheral surface.

【0028】[0028]

【発明の効果】本各発明では、パンチが上死点から下死
点に到達するまでの「一の工程」で、歯車素材の三箇所
以上の成形変形を行うため、歯車の製造効率の向上と共
に、製造コストの低廉を図ることができる。特に、本第
2発明によれば、パンチに設けられた案内棒及びダイに
設けられた挿入穴の相互作用で、歯車用素材の上下両端
部に、互いにしっかりと位置合わせのされた面取り部を
形成することが容易である。
INDUSTRIAL APPLICABILITY In each of the inventions, the gear manufacturing efficiency is improved because the deformation of the gear material is performed at three or more places in the "one step" from when the punch reaches the top dead center to the bottom dead center. At the same time, the manufacturing cost can be reduced. Particularly, according to the second aspect of the present invention, the chamfered portions, which are firmly aligned with each other, are formed at the upper and lower ends of the gear material by the interaction of the guide rods provided in the punch and the insertion holes provided in the die. Easy to form.

【図面の簡単な説明】[Brief description of drawings]

【図1】実施例1で用いたパンチ、ダイ及び歯車用素材
を説明するための一部斜視図である。
FIG. 1 is a partial perspective view illustrating a punch, die, and gear material used in a first embodiment.

【図2】実施例2で用いたパンチ及びダイを説明するた
めの一部斜視図である。
FIG. 2 is a partial perspective view illustrating a punch and a die used in a second embodiment.

【符号の説明】[Explanation of symbols]

1、1c;パンチ、11;下面、11a;第1面取り
歯、11b;案内棒、2;ダイ、21;面取り下型部、
21a;第2面取り歯、21b;角形穴、22;輪型
部、22a;成型歯、28;成形用穴部、3;歯車用素
材、31、32;歯車用素材の上方側の端縁部、32;
歯車用素材の下方側の端縁部、33;歯車用素材の側
面、34;歯車用素材の内面、35;歯車用素材の上
面、36;歯車用素材の下面、11c;矢通し棒。
1, 1c; punch, 11; bottom surface, 11a; first chamfered tooth, 11b; guide rod, 2; die, 21; chamfered lower mold part,
21a; Second chamfered tooth, 21b; Square hole, 22; Ring portion, 22a; Molding tooth, 28; Molding hole portion, 3; Gear material, 31, 32; Upper edge of gear material , 32;
The lower edge of the gear material, 33; the side surface of the gear material, 34; the inner surface of the gear material, 35; the upper surface of the gear material, 36; the lower surface of the gear material, 11c;

───────────────────────────────────────────────────── フロントページの続き (72)発明者 高山 修一 埼玉県和光市中央1丁目4番1号 株式会 社本田技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuichi Takayama 1-4-1 Chuo, Wako-shi, Saitama, Ltd. Honda R & D Co., Ltd.

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 成形用穴部に所定の歯車用素材をセット
した所定の圧造用ダイに、所定の圧造用パンチを近接さ
せて、該歯車用素材の成形変形を行い歯車を成形する方
法において、 上記圧造用パンチが上死点から下死点まで移動する一の
工程で、上記歯車用素材の各面及び上下両端縁部のうち
の少なくとも三箇所以上の成形変形を行うことを特徴と
する歯車の成形方法。
1. A method for forming a gear by causing a predetermined forging punch to approach a predetermined forging die in which a predetermined gear material is set in a forming hole, and deforming the gear material for forming. In one step in which the forging punch moves from top dead center to bottom dead center, at least three or more of the respective surfaces of the gear material and the upper and lower edge portions are subjected to molding deformation. Gear forming method.
【請求項2】 上記圧造用パンチの上記歯車用素材の上
面との当接面となる下面の周縁寄りに第1面取り歯が設
けられ、且つ、該下面の略中心より、位相合せ用案内棒
が突出配置されていると共に、 上記成形用穴部の上記歯車用素材の下面との当接面とな
る底面の周縁寄りに第2面取り歯が設けられ、且つ、該
底面の略中心に上記位相合せ用案内棒の少なくとも先端
側が摺動可能な状態で差し込める挿入穴が設けられた請
求項1記載の歯車の成形方法。
2. A first chamfered tooth is provided near the periphery of a lower surface which is a contact surface with the upper surface of the gear material of the forging punch, and a phase adjusting guide rod is provided from substantially the center of the lower surface. And a second chamfered tooth is provided near the periphery of the bottom surface that is the contact surface of the molding hole with the lower surface of the gear material, and the phase is approximately at the center of the bottom surface. The method for forming a gear according to claim 1, wherein an insertion hole is provided so that at least the tip end side of the alignment guide rod can be slidably inserted.
【請求項3】 上記圧造用パンチの上記歯車用素材の上
面との当接面となる下面の周縁寄りに第1面取り歯が設
けられ、且つ、該下面の略中心より、上記歯車用素材の
内面加工を行う内面加工用矢通し棒が突出配置されてい
ると共に、 上記成形用穴部の上記歯車用素材の下面との当接面とな
る底面の周縁寄りに第2面取り歯が設けられた請求項1
記載の歯車の成形方法。
3. A first chamfered tooth is provided near the peripheral edge of a lower surface of the forging punch that comes into contact with the upper surface of the gear material, and the lower surface of the lower surface of the gear material is substantially centered on the lower surface. An inner surface processing threading rod for performing the inner surface processing is provided in a protruding manner, and second chamfered teeth are provided near the peripheral edge of the bottom surface that is the contact surface of the forming hole portion with the lower surface of the gear material. Claim 1
A method for forming the described gear.
【請求項4】 上記圧造用ダイの上記成形用穴部の上記
歯車用素材の側面との当接面となる内周面に、歯形成を
行う成型歯が設けられた請求項1乃至3のいずれかに記
載の歯車の成形方法。
4. A molding tooth for forming a tooth is provided on an inner peripheral surface of the molding hole of the forging die, which is a contact surface with a side surface of the gear material. The method for forming a gear according to any one of claims.
【請求項5】 上記圧造用ダイが、上記第2面取り歯を
有する面取り下型部と、該面取下型部の上に位置合わせ
した状態で載置され、内周面に上記成型歯を有する略ド
ーナツ形状の輪型部と、を備える請求項4記載の歯車の
成形方法。
5. The chamfering die is placed in a state in which the chamfering lower die portion having the second chamfering tooth and the chamfering lower die portion are aligned with each other, and the molding tooth is provided on the inner peripheral surface. 5. A method for forming a gear according to claim 4, further comprising: a substantially donut-shaped wheel-shaped portion.
JP33151194A 1994-12-08 1994-12-08 Gear forming method Expired - Lifetime JP3660705B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33151194A JP3660705B2 (en) 1994-12-08 1994-12-08 Gear forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33151194A JP3660705B2 (en) 1994-12-08 1994-12-08 Gear forming method

Publications (2)

Publication Number Publication Date
JPH08155578A true JPH08155578A (en) 1996-06-18
JP3660705B2 JP3660705B2 (en) 2005-06-15

Family

ID=18244465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33151194A Expired - Lifetime JP3660705B2 (en) 1994-12-08 1994-12-08 Gear forming method

Country Status (1)

Country Link
JP (1) JP3660705B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103658500A (en) * 2013-12-11 2014-03-26 山东建筑大学 Precise warm forging one-time forming new technology of straight tooth cylinder inner gear
CN106607536A (en) * 2015-10-21 2017-05-03 韩虎产业株式会社 Cold forging device for manufacturing parking gear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103658500A (en) * 2013-12-11 2014-03-26 山东建筑大学 Precise warm forging one-time forming new technology of straight tooth cylinder inner gear
CN106607536A (en) * 2015-10-21 2017-05-03 韩虎产业株式会社 Cold forging device for manufacturing parking gear

Also Published As

Publication number Publication date
JP3660705B2 (en) 2005-06-15

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