JPH0263623A - Rack type tool for forming spline teeth - Google Patents

Rack type tool for forming spline teeth

Info

Publication number
JPH0263623A
JPH0263623A JP21469788A JP21469788A JPH0263623A JP H0263623 A JPH0263623 A JP H0263623A JP 21469788 A JP21469788 A JP 21469788A JP 21469788 A JP21469788 A JP 21469788A JP H0263623 A JPH0263623 A JP H0263623A
Authority
JP
Japan
Prior art keywords
teeth
tooth
rack teeth
rack
press
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
JP21469788A
Other languages
Japanese (ja)
Other versions
JPH0581341B2 (en
Inventor
Shoji Yamada
山田　昌二
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.)
Fuji Technica Inc
Original Assignee
Fuji Technica Inc
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 Fuji Technica Inc filed Critical Fuji Technica Inc
Priority to JP21469788A priority Critical patent/JPH0263623A/en
Publication of JPH0263623A publication Critical patent/JPH0263623A/en
Publication of JPH0581341B2 publication Critical patent/JPH0581341B2/ja
Granted legal-status Critical Current

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)
  • Gears, Cams (AREA)

Abstract

PURPOSE:To make forming work smooth by arranging forming rack teeth of guide teeth, loose fit teeth and press in teeth at a fixed rate to the rack teeth of a rack teeth tool and arranging the loose fit tooth forming rack teeth and the press in tooth forming rack teeth symmetrical to the center line. CONSTITUTION:In a rack type tool 10 in which a pair of tools 11, 15 are arranged face to face, the rack teeth 13, 17 extending in the short direction are arranged symmetrical to the center line on the facing surface of the tools 11, 15. The rack teeth 13 are provided with guide tooth forming rack teeth 13a, loose fit tooth forming rack teeth 13b, and press in tooth forming rack teeth 13c in the longitudinal direction at a specified distance. Further, similar rack teeth 17a, 17b, 17c are formed on the side of the tool 15. The groove width and the groove depth of each tooth are set respectively to spline grooves. Consequently, since the load and weight in time of forming can be reduced, forming is carried out smoothly.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、軸の外周部を成形してスプライン歯を得るラ
ック形工具に関し、特に別途形成さおだボス側のスプラ
イン溝に歯面圧で圧入嵌合するスプライン歯を成形する
ラック形工具に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a rack-shaped tool that obtains spline teeth by molding the outer circumference of a shaft. This invention relates to a rack-shaped tool for forming spline teeth that are press-fitted.

（従来の技術） 従来のラック形工具は、相対する工具の歯台面に形成さ
れる各ラック歯を、その歯厚および溝底の深さとも全て
略等寸に形成するとともに、各ラック歯の溝幅は、ボス
に形成されたスプライン溝のピッチ円の溝幅よりも大寸
になる如く成形し、また上記溝底の深さ、つまり相対す
るラック歯の溝底間の距離は、ボスに成形されたスプラ
イン溝の溝底直径円よりも大寸になる如く形成してなる
構造のものがあった。(Prior art) In conventional rack-shaped tools, each rack tooth formed on the tooth pedestal surface of the opposing tool is formed to have approximately the same tooth thickness and groove bottom depth, and each rack tooth has approximately the same thickness and groove bottom depth. The groove width is formed to be larger than the groove width of the pitch circle of the spline groove formed on the boss, and the depth of the groove bottom, that is, the distance between the groove bottoms of opposing rack teeth, is There is a structure in which the spline groove is formed to have a diameter larger than the bottom diameter circle of the molded spline groove.

（発明が解決しようとする課題） 上記ラック形工具により軸を転造加工すると、第９図お
よび第１０図に示すように、軸１の外周部に形成された
各スプライン歯２は、そのピッチ円の歯厚Ｔ１および歯
先直径用ＳＤ１が全て等寸に成形されるとともに、上記
歯厚Ｔ１はギヤ３のボス３ａの内周に形成されたスプラ
イン溝４のピッチ円の溝幅Ｗ１よりも小寸に形成され、
また上記歯先直径用ＳＤＩは上記スプライン溝４の溝底
直径用ＢＤＩよりも若干大径に形成されることになる。(Problems to be Solved by the Invention) When a shaft is rolled using the above-mentioned rack-shaped tool, each spline tooth 2 formed on the outer circumference of the shaft 1 changes its pitch as shown in FIGS. 9 and 10. The circular tooth thickness T1 and the tip diameter SD1 are all molded to the same size, and the tooth thickness T1 is larger than the groove width W1 of the pitch circle of the spline groove 4 formed on the inner periphery of the boss 3a of the gear 3. Formed into a small size,
Further, the SDI for the tooth tip diameter is formed to have a slightly larger diameter than the BDI for the groove bottom diameter of the spline groove 4.

これにより、上記軸１とボス３ａとは、スプライン歯２
の歯先面２ａがスプライン溝４の溝底面４ａに圧入、い
わゆる大径圧入で嵌合することになる。As a result, the shaft 1 and the boss 3a are connected to the spline teeth 2.
The tooth tip surface 2a of the spline groove 4 is press-fitted into the groove bottom surface 4a of the spline groove 4 by a so-called large-diameter press-fit.

これでは、スプライン歯２とスプライン溝４との間に円
周方向のバックラッシュが発生し、回転方向に高荷重ま
たは衝撃荷重が発生すると、ボス３ａと軸１とが周方向
にガタつき、両者を締め付は固定するナツト５が緩んだ
り、異音が発生したりすることになる。In this case, backlash occurs in the circumferential direction between the spline teeth 2 and the spline groove 4, and when a high load or impact load occurs in the rotational direction, the boss 3a and the shaft 1 rattle in the circumferential direction, causing both Tightening may cause the nut 5 that fixes it to become loose or cause abnormal noise.

本考案は、成形されたスプライン歯がスプライン溝に対
して歯面圧で圧入するスプライン歯成形用ラック形工具
を得ることを目的とする。The object of the present invention is to obtain a rack-shaped tool for forming spline teeth in which formed spline teeth are press-fitted into spline grooves with tooth surface pressure.

（課題を解決するための手段） 本発明は、上記目的を達成するために、以下の如く構成
したものである。(Means for Solving the Problems) In order to achieve the above object, the present invention is configured as follows.

即ち、細長い直方体状の主体の一面に短手方向に延びる
凹凸状のランク歯を多数形成してなる工具を一対設け、
各工具をラック歯側で互いに対向配置してなるスプライ
ン歯成形用ラック形工具において、各工具の相対面する
短手方向一端部のラック歯は、その溝幅を小寸にかつそ
の溝底を浅くしたガイド歯成形ラック歯とし、前記短手
方向他部のラック歯は、ガイド歯成形ラック歯に対して
その溝幅を大寸にかつその溝底を深くした遊嵌歯成形ラ
ック歯と、この遊嵌歯成形ラック歯に対してその溝幅を
さらに大寸にかつその溝底を略等深さにした圧入歯成形
ラック歯とを長手方向に所定の比率で配列形成するとと
もに、前記遊嵌歯成形ラック歯と圧入歯成形ラック歯と
は、相対する工具の主体の一面に点対称位置に配列形成
する構成にしたものである。That is, a pair of tools are provided, each having a large number of uneven rank teeth extending in the lateral direction on one surface of an elongated rectangular parallelepiped main body.
In a spline tooth forming rack-shaped tool in which tools are arranged opposite each other on the rack teeth side, the rack teeth at one end in the transverse direction facing each other have a small groove width and a groove bottom. The rack teeth on the other side in the transverse direction are loose-fitting molded rack teeth having a groove width larger than that of the guide tooth molded rack teeth and a groove bottom deepened; Press-fit molded rack teeth having a larger groove width and approximately the same depth at the groove bottom are arranged in a predetermined ratio in the longitudinal direction of the loose-fit molded rack teeth, and The fitted tooth molded rack teeth and the press-fit tooth molded rack teeth are arranged in point-symmetrical positions on one surface of the main body of the opposing tool.

（作用） 本発明は上記構成にしたものであるから、各工具間に軸
をラック歯と平行状に配置し、各工具を長手方向に相対
移動させて上記軸を転造加工すると、上記軸の外周部に
スプライン歯が形成されるとともに、このスプライン歯
は、その一端部の全外周が小寸の歯厚かつ小径の歯先直
径用となるガイド歯に、また軸の基部外周が上記ガイド
歯に対して大寸の歯厚かつ大径の歯先直径用となる遊嵌
歯と、この遊嵌歯に対してさらに大寸の歯厚かつ略等径
の歯先直径用となる圧入歯とが円周方向に所定の比率で
配列形成されることになる。(Function) Since the present invention has the above-mentioned configuration, when the shaft is disposed between each tool in parallel with the rack teeth and the shaft is rolled by moving each tool relatively in the longitudinal direction, the shaft can be rolled. Spline teeth are formed on the outer periphery of the shaft, and the entire outer periphery of one end of the spline tooth serves as a guide tooth for small tooth thickness and small tip diameter, and the outer periphery of the base of the shaft serves as the guide tooth. A loose-fitting tooth that has a large tooth thickness and a large tip diameter, and a press-fit tooth that has an even larger tooth thickness and a tip diameter that is approximately the same diameter as the loose-fitting tooth. are arranged in a predetermined ratio in the circumferential direction.

（実施例） 以下本発明の実施例を図面に基いて説明する。(Example) Embodiments of the present invention will be described below based on the drawings.

図面において、第１図は本考案の実施例を示す断面図、
第２図および第３図は第１図の■■および■−■線によ
る要部拡大断面図、第４＝４ 図は第２図のＩＶ−ＩＶ線による要部拡大断面図、第５
図は成形された軸の断面図、第６図は軸とボスとのスプ
ライン嵌合状態を示す要部断面図、第７図および第８図
はその■−■および■−■線による要部拡大断面図であ
る。In the drawings, FIG. 1 is a sectional view showing an embodiment of the present invention;
Figures 2 and 3 are enlarged cross-sectional views of main parts taken along lines
The figure is a cross-sectional view of the molded shaft, Figure 6 is a cross-sectional view of the main part showing the state of spline fitting between the shaft and the boss, and Figures 7 and 8 are the main parts shown by lines ■-■ and ■-■. It is an enlarged sectional view.

第１図において、１０は一対の工具１１・１５を互いに
上下に対向配置してなるラック形工具である。In FIG. 1, reference numeral 10 is a rack-shaped tool formed by a pair of tools 11 and 15 arranged vertically opposite to each other.

上記工具１１・１５は、共に細長い直方体状の主体１２
・１６の対向面に、短手方向に延びる多数の凹凸状のラ
ック歯１３・１７を左右点対称に形成してなり、このう
ち、上部側のラック歯１３を代表して説明する。The tools 11 and 15 both have an elongated rectangular parallelepiped main body 12.
A large number of concave and convex rack teeth 13 and 17 extending in the lateral direction are formed symmetrically on the opposite surfaces of the rack teeth 16, of which the rack teeth 13 on the upper side will be explained as a representative.

即ち、上記上部側のラック歯１３は、主体１２の短手方
向一端部（第２図において下端部）をガイド歯成形ラッ
ク歯１３ａに、主体１２の短手方向他部を長手方向に所
定の間陽をおいて遊嵌歯成形ラック歯１３ｂと圧入歯成
形ラック歯１３ｃとに形成してなる。That is, the rack teeth 13 on the upper side have one end (lower end in FIG. 2) of the main body 12 in the guide tooth molded rack tooth 13a, and the other end of the main body 12 in the short direction in the longitudinal direction. The rack teeth 13b are formed into loose-fitting molded rack teeth and the rack teeth 13c are formed into press-fitting teeth with a distance between them.

上記ガイド歯成形ラック歯１．３　ａは、第２図および
第４図に示すように、そのピッチ線の溝幅Ｗ２を、第１
０図に記したスプライン溝４の溝＠Ｗ１よりも小寸に形
成し、その溝底１３ａ−１を、これにより形成されるス
プライン歯２０の歯先円直径ＳＤ２　（第７図）が第１
０図に記した溝底直径内ＢＤＩよりも小寸となる如く浅
く形成する。As shown in FIGS. 2 and 4, the guide tooth molded rack tooth 1.3a has a pitch line groove width W2 of
The groove bottom 13a-1 is formed smaller than the groove @W1 of the spline groove 4 shown in FIG.
It is formed shallowly so that it is smaller than the groove bottom diameter BDI shown in Figure 0.

また、上記遊嵌歯成形ラック歯１３ｂは、そのピッチ線
の溝＠Ｗ３を、上記ガイド歯成形ラック歯］、３ａの溝
＠Ｗ２よりも大寸に、かつ第１０図に記したスプライン
溝４の溝幅Ｗ１よりも小寸に形成し、その溝底１３ｂ−
１を、これにより形成されるスプライン歯２０の歯先円
直径ＳＤ３　（第８図）が第１０図に記した溝底直径内
ＢＤＩよりも小寸となる如く深く形成する。In addition, the free-fitting molded rack tooth 13b has a pitch line groove @W3 larger than the groove @W2 of the guide tooth molded rack tooth 3a, and the spline groove 4 shown in FIG. The groove width W1 is smaller than that of the groove bottom 13b-.
1 is formed deeply so that the tip circle diameter SD3 (FIG. 8) of the spline tooth 20 thus formed is smaller than the groove bottom diameter inner diameter BDI shown in FIG.

また、上記圧入歯成形ラック歯１３ｃは、そのピッチ線
の溝幅Ｗ４を、第１０図に記したスプライン溝４の溝幅
Ｗ１よりも若干大寸に形成し、その溝底１３ｃｍ１を、
上記遊嵌歯成形ラック歯１３ｂの溝底１３ｂ−１と同じ
深さに形成する。Further, the press-fit molded rack tooth 13c has a pitch line groove width W4 slightly larger than the groove width W1 of the spline groove 4 shown in FIG. 10, and a groove bottom 13 cm1 thereof.
It is formed to the same depth as the groove bottom 13b-1 of the loose-fit molded rack tooth 13b.

ここで、本例では、上記遊嵌歯成形ラック歯１３ｂによ
る溝＠Ｗ３の個数と、圧入歯成形ラック歯１３ｃによる
溝＠Ｗ４の個数は、第１図に示すようにその左部から右
部に向かって４→３→３→２→４→３→３→２の２４個
とする。Here, in this example, the number of grooves @W3 formed by the free-fit molded rack teeth 13b and the number of grooves @W4 formed by the press-fit molded rack teeth 13c vary from the left to the right as shown in FIG. There are 24 pieces, 4 → 3 → 3 → 2 → 4 → 3 → 3 → 2.

また、上部側の主体１６に形成するラック歯１７も前述
した、ガイド歯成形ラック歯１３ａ、遊嵌歯成形ラック
歯１３ｂおよび圧入歯成形ラック歯１３ｃと同様のガイ
ド歯成形ラック歯１７ａ、遊嵌歯成形ラック歯１７ｂお
よび圧入歯成形ラック歯１７ｃを形成してなり、ガイド
歯成形ラック歯１７ａは、ガイド歯成形ラック歯１３ａ
と対面させ、上記遊嵌歯成形ラック歯１７ｂによる溝幅
Ｗ３の個数と、圧入歯成形ラック歯１’７ｃによる溝＠
Ｗ４の個数は、第１図に示すようにその右部から左部に
向かって４→３・→３→２→４→３→３→２の２４個と
する。Furthermore, the rack teeth 17 formed on the upper main body 16 are also similar to the guide tooth molded rack teeth 13a, the loose fit molded rack teeth 13b, and the press fit tooth molded rack teeth 13c, and the guide tooth molded rack teeth 17a, the loose fit molded rack teeth 17a, and the rack teeth 17 formed on the upper main body 16. The molded tooth rack teeth 17b and the press-fit molded rack teeth 17c are formed, and the molded guide tooth rack teeth 17a are formed by the molded guide tooth rack teeth 13a.
and the number of groove widths W3 formed by the above-mentioned loose-fit molded rack teeth 17b and the groove @ formed by the press-fit molded rack teeth 1'7c.
As shown in FIG. 1, the number of W4s is 24 from the right to the left: 4→3→3→2→4→3→3→2.

次に上記実施例の使用態様について説明する。Next, the manner of use of the above embodiment will be explained.

各工具１１・１５間に軸１９の端部を介在させてこれを
転造加工すると、上記軸１９はその右端外周部がガイド
歯成形ラック歯１３ａ・１７ａにより、その左部外周部
が遊嵌歯成形ラック歯１３ｂ・１７ｂと圧入歯成形ラッ
ク歯１３Ｃ・１７ｃとにより成形されて第５図に示すよ
うに、周方向に２４個のスプライン歯２０が形成される
ことになる。When the end of the shaft 19 is interposed between the tools 11 and 15 and rolled, the shaft 19 has its right end outer periphery formed by the guide teeth forming rack teeth 13a and 17a, and its left outer periphery is loosely fitted. As shown in FIG. 5, 24 spline teeth 20 are formed in the circumferential direction by forming the rack teeth 13b and 17b and the press-fit rack teeth 13C and 17c.

そして、上記ガイド歯成形ラック歯１３ａ・１７ａに対
応するスプライン歯２０の右端部は、第６図および第７
図に示すように、その歯厚Ｔ２および歯先直径用ＳＤ２
が、ボス３ａ側の溝幅Ｗ１および溝底直径内ＢＤＩより
も小寸のガイド歯２０ａとなる。The right end portions of the spline teeth 20 corresponding to the guide teeth molded rack teeth 13a and 17a are shown in FIGS. 6 and 7.
As shown in the figure, its tooth thickness T2 and tip diameter SD2
However, the guide teeth 20a are smaller than the groove width W1 on the boss 3a side and the groove bottom diameter inner diameter BDI.

また、遊嵌歯成形ラック歯１３ｂ・１７ｂと圧入成形ラ
ック歯１３ｃ・１７ｃとに対応するスプライン歯２０の
左部は、以下の如くなる。Further, the left portion of the spline tooth 20 corresponding to the loose-fit molded rack teeth 13b and 17b and the press-fit molded rack teeth 13c and 17c is as follows.

即ち、遊嵌歯成形ラック歯１３ｂ・１７ｂに対応する部
位は、第６図および第８図に示すように、その歯厚Ｔ３
および歯先直径用ＳＤ３が、上記ガイド歯２０ａのもの
よりも大寸にかつボス３ａ側の溝幅Ｗ１および溝底直径
内ＢＤ１よりも小寸の遊嵌歯２０ｂとなる。That is, as shown in FIGS. 6 and 8, the portions corresponding to the loose-fit molded rack teeth 13b and 17b have a tooth thickness T3.
The tooth tip diameter SD3 is larger than that of the guide tooth 20a, and the loose fit tooth 20b is smaller than the groove width W1 on the boss 3a side and the groove bottom diameter BD1.

また、圧入成形ラック歯１３ｃ・１７ｃに対応する部位
は、第６図および第８図に示すように、その歯厚Ｔ４が
上記溝幅Ｗ１よりも若干大寸にかつその歯先直径用が遊
嵌歯２０ｂと略等寸の圧入歯２０Ｃとなる。In addition, as shown in FIGS. 6 and 8, the portions corresponding to the press-fit molded rack teeth 13c and 17c have a tooth thickness T4 slightly larger than the groove width W1 and a free tooth tip diameter. The press-fit teeth 20C are approximately the same size as the fit teeth 20b.

そして、上記遊嵌歯２０ｂと圧入歯２０ｃとは、第５図
に示すように、上下部の各３個および左右の各２個が圧
入歯２０ｃに残余が遊嵌歯２０ｂに形成されることにな
る。As shown in FIG. 5, the loose-fitting teeth 20b and the press-fitting teeth 20c are formed such that three each on the upper and lower sides and two each on the left and right are press-fitting teeth 20c, and the rest are formed as the loose-fitting teeth 20b. become.

このため、軸１９とギヤ３のボス３ａとは、スプライン
歯２０の圧入歯２０ｃがスプライン溝４ａに歯面圧で圧
入、即ち、しまりばめ嵌合し、円周方向のガタッキが阻
止されることになる。また、上記圧入歯２０ｃは、各ス
プライン歯２ｏのうちの一部であるため、ボス３ａを軸
１９に嵌合させる負荷が低減することになる。Therefore, between the shaft 19 and the boss 3a of the gear 3, the press-fit teeth 20c of the spline teeth 20 are press-fitted into the spline groove 4a with tooth surface pressure, that is, they are tightly fitted, and looseness in the circumferential direction is prevented. It turns out. Moreover, since the press-fit teeth 20c are part of each spline tooth 2o, the load of fitting the boss 3a onto the shaft 19 is reduced.

また、軸１９の端部に形成されたガイド歯２０ａは、ボ
ス３ａのスプライン歯４と緩く嵌合することになり、嵌
合初期に両者が同軸に位置決めされるので、両者の圧入
が容易になる。Further, the guide teeth 20a formed at the end of the shaft 19 are loosely fitted with the spline teeth 4 of the boss 3a, and since both are positioned coaxially at the initial stage of fitting, press-fitting of both is easy. Become.

（発明の効果） 以上の説明から明らかな如く、本発明は、軸の外周部に
、粛正および歯先直径円の異なったガイド歯、遊嵌歯、
圧入歯の混在したスプライン歯を形成することができ、
軸とボスとの圧入負荷を低減させながら、両者を歯面圧
で圧入嵌合させることができる効果を奏する。(Effects of the Invention) As is clear from the above description, the present invention provides guide teeth and loose-fitting teeth with different diameters and tip diameters on the outer circumference of the shaft.
It is possible to form spline teeth with a mixture of press-fit teeth.
This has the effect of reducing the press-fitting load between the shaft and the boss while allowing them to be press-fitted with tooth surface pressure.

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

第１図は本考案の実施例を示す断面図、第２図および第
３図は第１図の■−■および■−■線による要部拡大断
面図、第４図は第２図の■■線による要部拡大断面図、
第５図は成形された軸の断面図、第６図は軸とボスとの
スプライン嵌合状態を示す要部断面図、第７図および第
８図はその■−■および■−■線による要部拡大断面図
、第９図は従来のラック形工具により形成された軸の嵌
合状態を示す要部側面断面図、第１０図はその正面断面
図である。 １０ニラツク形工具、１１・１５：工具、１２・１６：
主体、１３・１７：ラック歯、１３ａ・１７ａニガイド
歯成形ラツク歯、１３ｂ・１７ｂ：遊嵌歯成形ラック歯
、１３ｃ・１７ｃ：圧入歯成形ラック歯、１３　ａ　−
１・１３ｂ−１・１３ｃｍ１：溝底、ｗ２・ｗ３・ｗ４
：溝幅、１９：軸、２０ニスプライン歯、２０ａニガイ
ド歯、２０ｂ：遊嵌歯、２０ｃ：圧入歯。 出願代理人　　　松　本　　久 第 図 第 図FIG. 1 is a sectional view showing an embodiment of the present invention, FIGS. 2 and 3 are enlarged sectional views of main parts taken along the lines ■-■ and ■-■ in FIG. 1, and FIG. ■Enlarged cross-sectional view of main parts drawn by lines,
Fig. 5 is a sectional view of the molded shaft, Fig. 6 is a sectional view of the main part showing the state of spline fitting between the shaft and the boss, and Figs. 7 and 8 are taken along the ■-■ and ■-■ lines. FIG. 9 is a side sectional view of the main part showing a fitted state of a shaft formed by a conventional rack-shaped tool, and FIG. 10 is a front sectional view thereof. 10 Nirak type tool, 11/15: Tool, 12/16:
Main body, 13/17: Rack teeth, 13a/17a Ni guide tooth molded rack teeth, 13b/17b: Free fit tooth molded rack teeth, 13c/17c: Press fit tooth molded rack teeth, 13 a -
1・13b-1・13cm1: Groove bottom, w2・w3・w4
: groove width, 19: shaft, 20 spline tooth, 20a double guide tooth, 20b: loose fit tooth, 20c: press fit tooth. Application agent: Hisashi Matsumoto

Claims (1)

【特許請求の範囲】[Claims] １、細長い直方体状の主体の一面に短手方向に延びる凹
凸状のラック歯を多数形成してなる工具を一対設け、各
工具をラック歯側で互いに対向配置してなるスプライン
歯成形用ラック形工具において、各工具の相対面する短
手方向一端部のラック歯は、その溝幅を小寸にかつその
溝底を浅くしたガイド歯成形ラック歯とし、前記短手方
向他部のラック歯は、ガイド歯成形ラック歯に対してそ
の溝幅を大寸にかつその溝底を深くした遊嵌歯成形ラッ
ク歯と、この遊嵌歯成形ラック歯に対してその溝幅をさ
らに大寸にかつその溝底を略等深さにした圧入歯成形ラ
ック歯とを長手方向に所定の比率で配列形成するととも
に、前記遊嵌歯成形ラック歯と圧入歯成形ラック歯とは
、相対する工具の主体の一面に点対称位置に配列形成し
たことを特徴とするスプライン歯成形用ラック形工具。1. A spline tooth forming rack type in which a pair of tools each having a large number of uneven rack teeth extending in the lateral direction are provided on one surface of an elongated rectangular parallelepiped main body, and each tool is arranged opposite to each other on the rack tooth side. In the tool, the rack teeth at one end in the transverse direction facing each other are formed into guide tooth molded rack teeth with a small groove width and a shallow groove bottom, and the rack teeth at the other end in the transverse direction are , a loose-fit molded rack tooth with a larger groove width and a deeper groove bottom than the guide tooth molded rack tooth, and a loose-fit molded rack tooth with a wider groove width and a deeper groove bottom. Press-fit molded rack teeth whose groove bottoms have approximately the same depth are arranged in a predetermined ratio in the longitudinal direction, and the loose-fit molded rack teeth and the press-fit molded rack teeth are the main body of the opposing tool. A rack-shaped tool for forming spline teeth, characterized in that the spline teeth are arranged in symmetrical positions on one surface of the spline.
JP21469788A 1988-08-29 1988-08-29 Rack type tool for forming spline teeth Granted JPH0263623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21469788A JPH0263623A (en) 1988-08-29 1988-08-29 Rack type tool for forming spline teeth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21469788A JPH0263623A (en) 1988-08-29 1988-08-29 Rack type tool for forming spline teeth

Publications (2)

Publication Number Publication Date
JPH0263623A true JPH0263623A (en) 1990-03-02
JPH0581341B2 JPH0581341B2 (en) 1993-11-12

Family

ID=16660106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21469788A Granted JPH0263623A (en) 1988-08-29 1988-08-29 Rack type tool for forming spline teeth

Country Status (1)

Country Link
JP (1) JPH0263623A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08141683A (en) * 1994-11-14 1996-06-04 O S G Kk Missing teeth serration, manufacturing method of missing teeth serration, and rolling processing tool for missing teeth serration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08141683A (en) * 1994-11-14 1996-06-04 O S G Kk Missing teeth serration, manufacturing method of missing teeth serration, and rolling processing tool for missing teeth serration

Also Published As

Publication number Publication date
JPH0581341B2 (en) 1993-11-12

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