JPS627245B2 - - Google Patents
Info
- Publication number
- JPS627245B2 JPS627245B2 JP18854081A JP18854081A JPS627245B2 JP S627245 B2 JPS627245 B2 JP S627245B2 JP 18854081 A JP18854081 A JP 18854081A JP 18854081 A JP18854081 A JP 18854081A JP S627245 B2 JPS627245 B2 JP S627245B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- shot
- tooth
- cover
- cover member
- 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
- 238000005480 shot peening Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Gears, Cams (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は歯車のシヨツトピーニング方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for shot peening gears.
（従来技術）
従来、ダクタイル鋳鉄製歯車等の歯車の疲労強
度を向上させるために、歯車の歯部にシヨツトを
投射し、投射部分を局部的に圧縮して残留応力を
生じさせるシヨツトピーニング方法を採用するこ
とが知られている〔例えば、福田連著「ブラス
ト・クリーニングとシヨツト・ピーニング」（昭
和28年２月25日）、日刊工業新聞社参照〕。(Prior art) Conventionally, in order to improve the fatigue strength of gears such as ductile cast iron gears, a shot peening method was used in which a shot was projected onto the teeth of the gear and the projected portion was locally compressed to generate residual stress. [For example, see "Blast Cleaning and Shot Peening" by Ren Fukuda (February 25, 1950), Nikkan Kogyo Shimbunsha].
第４図は従来一般に採用されているシヨツトピ
ーニング方法の一例を説明するものであり、歯車
１０を歯車取付軸である回転軸１６に取付けて回
転し、該回転している歯車１０に対してシヨツト
投射装置１１からシヨツト１２を投射することに
より、歯車１０のシヨツトピーニングが行われ
る。 FIG. 4 illustrates an example of a shot peening method that has been generally employed in the past, in which a gear 10 is attached to a rotating shaft 16, which is a gear mounting shaft, and rotated, and the rotating gear 10 is By projecting a shot 12 from a shot projection device 11, shot peening of the gear 10 is performed.
ところで、前記歯車１０の回転中、歯部１３の
歯先面１４、前方歯面１４ａ、後方歯面１４ｂ及
び歯底面１５にシヨツト１２が投射されるが、歯
先面１４及び各歯面４ａ，１４ｂに大部分のシヨ
ツト１２が投射され、最も疲労強度の向上を図ら
なければならない歯底部の歯底面１５に対しては
シヨツト１２の量が少く、充分な量のシヨツトが
投射されない。 By the way, while the gear 10 is rotating, the shot 12 is projected onto the top surface 14, the front tooth surface 14a, the rear tooth surface 14b, and the bottom surface 15 of the tooth portion 13. Most of the shots 12 are projected onto the tooth surface 14b, and the amount of shots 12 is small, and a sufficient amount of shots are not projected onto the root surface 15 of the tooth bottom where the fatigue strength must be improved the most.
そのため、歯底面１５に充分なシヨツト１２を
投射し、第５図に斜線Ｅで示す範囲に残留応力を
生じさせるためには、シヨツトを投射する時間を
長く設定する必要があるが、逆に歯先面１４及び
各歯面１４ａ，１４ｂには第５図に斜線Ｄで示す
範囲に残留応力を生じることになる。その結果、
歯先面１４及び各歯面１４ａ，１４ｂが粗くな
り、シヨツトピーニング後における歯先面１４及
び各歯面１４ａ，１４ｂの研削作業に長時間を要
し、作業性が悪くなる上に、歯車使用時に歯車音
を発生して騒音の原因となる、等の問題点があ
る。 Therefore, in order to project a sufficient amount of shot 12 onto the tooth root surface 15 and generate residual stress in the area indicated by the diagonal line E in FIG. Residual stress is generated in the tip surface 14 and each tooth surface 14a, 14b in the range indicated by diagonal lines D in FIG. the result,
The tooth tip surface 14 and each tooth surface 14a, 14b become rough, and it takes a long time to grind the tooth tip surface 14 and each tooth surface 14a, 14b after shot peening. There are problems such as the generation of gear noise during use, which causes noise.
一方、前記問題点を生じないようにするために
は、シヨツト１２を投射する時間を短くする必要
があるが、その際には逆に歯底面１５へのシヨツ
ト１２の投射量が少くなり、歯底面１５の疲労強
度の向上を充分に図ることができないという問題
点がある。 On the other hand, in order to prevent the above-mentioned problem from occurring, it is necessary to shorten the time for projecting the shot 12, but in this case, the amount of shot 12 projected onto the tooth bottom surface 15 decreases, and the tooth There is a problem in that the fatigue strength of the bottom surface 15 cannot be sufficiently improved.
（発明の目的）
本発明は前記従来の問題点を解決すべくなされ
たもので、歯車の歯底面に対して適確にシヨツト
を投射して歯底面の疲労強度を向上させるととも
に、歯先面及び歯面への投射量を少くして歯先面
及び歯面の粗れを防止し、研削時間の短縮を図
り、かつ歯車使用時に発生する騒音を低減させ得
るようにした歯車のシヨツトピーニング方法を提
供することを目的とする。(Object of the Invention) The present invention has been made to solve the above-mentioned conventional problems, and it improves the fatigue strength of the tooth bottom surface by accurately projecting a shot onto the tooth bottom surface of a gear, and also improves the fatigue strength of the tooth bottom surface. and shot peening for gears that reduces the amount of radiation applied to the tooth surface to prevent roughness of the tooth tip and tooth surface, shorten grinding time, and reduce noise generated when the gear is in use. The purpose is to provide a method.
（発明の構成）
本発明の構成上の特徴は、シヨツトピーニング
すべき歯車の歯先面を覆うことができるカバー体
を、前記歯車の歯数と同数で、かつ円周方向に等
間隔に放射状に設けたカバー部材を用い、該カバ
ー部材を前記カバー体の夫々が前記歯車の歯先面
の夫々を覆うようにして前記歯車と共に回転軸に
一体的に装着し、該回転軸を駆動して前記歯車及
びカバー部材を一体的に回転させながらシヨツト
を投射して前記歯車をシヨツトピーニングするこ
とにある。(Structure of the Invention) A structural feature of the present invention is that the cover bodies capable of covering the tooth tip surface of the gear to be shot peened are arranged in the same number as the number of teeth of the gear and at equal intervals in the circumferential direction. Using cover members provided radially, the cover members are integrally attached to the rotating shaft together with the gear so that each of the cover bodies covers each of the tooth tip surfaces of the gear, and the rotating shaft is driven. The purpose of the present invention is to shot peen the gear by projecting a shot while rotating the gear and the cover member integrally.
（実施例）
本発明の実施例を第１図〜第３図に基いて説明
する。第１図において、１はシヨツトピーニング
すべきダクタイル鋳鉄製歯車（以下歯車と称す
る）、２は歯車１の歯部、４は歯先面、４ａは前
方歯面、４ｂは後方歯面、５は歯底面である。(Example) An example of the present invention will be described based on FIGS. 1 to 3. In Fig. 1, 1 is a ductile cast iron gear to be shot peened (hereinafter referred to as a gear), 2 is a tooth of gear 1, 4 is a tooth tip surface, 4a is a front tooth surface, 4b is a rear tooth surface, 5 is the root surface of the tooth.
３はシヨツトピーニングに用いるカバー部材
で、硬質ゴム又は表面硬化処理を施した鋼材等で
形成され、歯車１の歯先面４を覆うことができる
カバー体３ａを備えている。カバー体３ａは、歯
車１の歯数と同数設けられ、円周方向に等間隔に
放射状に設けられている。カバー体３ａの高さh1
は、歯車１の全歯たけh2（例えば８mm）の0.4〜
0.8倍に設定され、カバー体３ａの幅W1は歯車１
の歯幅W2（例えば２mm）に略等しく設定されて
いる。 Reference numeral 3 denotes a cover member used for shot peening, which is made of hard rubber or surface-hardened steel, and includes a cover body 3a that can cover the tooth tip surface 4 of the gear 1. The cover bodies 3a are provided in the same number as the number of teeth of the gear 1, and are provided radially at equal intervals in the circumferential direction. Height of cover body 3a h 1
is 0.4 to the total tooth height h2 of gear 1 (e.g. 8mm)
The width W 1 of the cover body 3a is set to 0.8 times, and the width W 1 of the cover body 3a is the same as the gear 1.
The width is set approximately equal to the face width W 2 (for example, 2 mm).
また、カバー部材３は、シヨツトピーニングを
行う際に第２図に示すように、歯車１と一体的に
回転し得るようにキー７を介して回転軸６に装着
されると共に、各カバー体３ａが歯車１の各歯先
面４を覆い得るように装着可能に構成されてい
る。 Further, when performing shot peening, the cover member 3 is attached to the rotating shaft 6 via a key 7 so as to be able to rotate integrally with the gear 1, as shown in FIG. 3a is configured to be attachable so as to cover each tooth tip surface 4 of the gear 1.
回転軸６は、第４図に示す従来例と同様のシヨ
ツト投射装置（図示せず）に付設され、シヨツト
ピーニングを行う歯車を取付ける歯車取付軸であ
る。８は、歯車１及びカバー部材３を締付固定す
るナツトである。 The rotating shaft 6 is attached to a shot projection device (not shown) similar to the conventional example shown in FIG. 4, and is a gear mounting shaft on which a gear for shot peening is mounted. 8 is a nut for tightening and fixing the gear 1 and the cover member 3.
歯車１のシヨツトピーニングは、第４図に示す
従来例と同様のシヨツト投射装置を用いて行わ
れ、歯車１とカバー部材３とを第２図に示すよう
に回転軸６に装着し、回転軸６を駆動して歯車１
及びカバー部材３を一体的に回転させ、そして回
転中の歯車１及びカバー部材３に、シヨツト投射
装置から、シヨツトを投射することにより行われ
る。 Shot peening of the gear 1 is performed using a shot projection device similar to the conventional example shown in FIG. Gear 1 by driving shaft 6
This is carried out by rotating the cover member 3 integrally and projecting a shot onto the rotating gear 1 and cover member 3 from a shot projection device.
投射されるシヨツトは、歯車１が回転されてい
るため、歯車１の歯部２に対して相対的に方向が
変化し、例えば第３図において歯車１が矢印方向
に回転されており、直線Ａ及びＢで示す傾斜方向
と、直線Ｃで示す垂直方向とから順次投射される
ことになる。 Since the gear 1 is being rotated, the projected shot changes its direction relative to the tooth portion 2 of the gear 1. For example, in FIG. The light is projected sequentially from the oblique direction indicated by and B, and the vertical direction indicated by straight line C.
そして、歯先面４には、カバー部材３のカバー
体３ａが覆つているため、シヨツトはいずれの方
向からも全く投射されない。前方歯面４ａには、
直線Ｂ方向からのシヨツトが前方の歯先面４を覆
うカバー体３ａの側面に反射されて投射されると
共に、直線Ｃ方向からのシヨツトが投射されるこ
とになる。しかしながら、直線Ａ方向からのシヨ
ツトは、前方の歯先面４を覆うカバー体３ａの影
になり、ほとんどが投射されない。 Since the tooth tip surface 4 is covered by the cover body 3a of the cover member 3, no shot is projected from any direction. On the front tooth surface 4a,
Shots from the direction of straight line B are reflected and projected on the side surface of the cover body 3a that covers the front tooth tip surface 4, and shots from the direction of straight line C are projected. However, most of the shots from the direction of straight line A are not projected because they are in the shadow of the cover body 3a that covers the front tooth tip surface 4.
また、後方歯面４ｂには、直線Ａ方向からのシ
ヨツトが後方の歯先面４を覆うカバー体３ａの側
面に反射されて投射されると共に、直線Ｃ方向か
らのシヨツトが投射されることになる。しかしな
がら、直線Ｂ方向からのシヨツトは、後方の歯先
面４を覆うカバー体３ａの影になり、ほとんどが
投射されないことになる。 In addition, shots from the direction of the straight line A are reflected and projected on the side surface of the cover body 3a that covers the rear tooth tip surface 4, and shots from the direction of the straight line C are projected onto the rear tooth surface 4b. Become. However, the shot from the direction of the straight line B will be in the shadow of the cover body 3a that covers the rear tooth tip surface 4, and most of it will not be projected.
以上のように、前後方向の歯面４ａ，４ｂに投
射されるシヨツトは、夫々直線Ａ及びＢ方向から
直接投射される量が従来の場合に比較して遥に少
ないため、たとえカバー体３ａの側面に反射され
るシヨツトが投射されるとしても、歯車１の１回
転中において各歯面４ａ，４ｂに投射されるシヨ
ツトの量は従来の場合に比較して遥に少なくな
る。 As described above, the amount of shots projected onto the tooth surfaces 4a and 4b in the front-rear direction is much smaller than that in the conventional case from straight lines A and B, so even if the cover body 3a Even if shots reflected from the side surfaces are projected, the amount of shots projected onto each tooth surface 4a, 4b during one revolution of the gear 1 is much smaller than in the conventional case.
一方、歯底面５には、従来と同様に直線Ｃ方向
からのシヨツトが投射されると共に、更に直線Ａ
及びＢ方向からのシヨツトがカバー体３ａの側面
に反射されて投射されることになり、従来の場合
に比較して、前記カバー体３ａの側面で反射され
る分に相当して、歯車１の１回転中におけるシヨ
ツトの投射量が増加されることになる。 On the other hand, a shot from the direction of straight line C is projected onto the tooth bottom surface 5 as in the conventional case, and a shot from straight line A is also projected onto the tooth bottom surface 5.
The shot from the direction B and direction B is reflected and projected on the side surface of the cover body 3a, and compared to the conventional case, the shot from the gear 1 is reflected by the side surface of the cover body 3a. The amount of shot shot during one revolution is increased.
従つて、シヨツト投射時間を従来の場合と同一
に設定する場合には、歯底面５の疲労強度は従来
の場合に比較して遥に向上が図られると共に、歯
先面４及び各歯面４ａ，４ｂの粗れを抑制し、研
削作業時間を短縮することができる。また、歯底
面５を従来と同一の疲労強度にシヨツトピーニン
グする場合には、シヨツト投射時間を短縮するこ
とができ、しかも、各歯面４ａ，４ｂに投射され
るシヨツトの量は歯車１の１回転当たりの投射量
が少なく、投射時間が短いため、さらに少なくな
り、各歯面４ａ，４ｂの粗れをさらに抑制するこ
とができる。 Therefore, when the shot projection time is set to be the same as in the conventional case, the fatigue strength of the tooth bottom surface 5 is much improved compared to the conventional case, and the tooth tip surface 4 and each tooth surface 4a are , 4b can be suppressed and the grinding work time can be shortened. Furthermore, when shot peening the tooth root surface 5 to the same fatigue strength as before, the shot peening time can be shortened, and the amount of shot peened onto each tooth surface 4a, 4b is smaller than that of the gear 1. Since the amount of projection per rotation is small and the projection time is short, the amount is further reduced, and the roughness of each tooth surface 4a, 4b can be further suppressed.
例えば、歯車を8r.p.mで回転し、平均粒径0.8
mmφのシヨツトを45ｍ／secの速度で４分間投射
する場合には、歯車の疲労強度が従来の場合に比
較して40％向上し、疲労寿命が４倍以上延命され
た。また、歯先面４及び歯面４ａ，４ｂは粗れが
少なく、研削作業時間を大幅に短縮することがで
き、さらに歯車使用時の騒音の低減を図ることが
できた。 For example, if a gear is rotated at 8 rpm, the average particle size is 0.8
When a shot of mmφ was projected for 4 minutes at a speed of 45 m/sec, the fatigue strength of the gear was improved by 40% compared to the conventional case, and the fatigue life was extended by more than 4 times. Further, the tooth tip surface 4 and the tooth surfaces 4a and 4b had little roughness, making it possible to significantly shorten the grinding work time and further reduce noise during use of the gear.
なお、カバー体３ａの高さh1は、歯車１の全歯
たけh2の0.4倍以下に設定されている場合には、
歯面４ａ，４ｂの粗れが比較的大きくなり、0.8
倍以上に設定されている場合には、歯底面５への
シヨツトの投射量が低下し、シヨツト投射時間を
延長しなければならないため、0.4〜0.8倍に設定
されていることが好ましい。 In addition, when the height h1 of the cover body 3a is set to 0.4 times or less of the total tooth height h2 of the gear 1,
The roughness of the tooth surfaces 4a and 4b is relatively large, and the roughness is 0.8
If it is set to 0.4 to 0.8 times or more, the amount of shots projected onto the tooth root surface 5 will decrease and the shot projection time will have to be extended, so it is preferably set to 0.4 to 0.8 times.
（発明の効果）
本発明は、シヨツトピーニングすべき歯車の歯
先面を覆うカバー部材が前記歯車と一体的に回転
軸に装着されていることにより、従来の場合と比
較して前記歯車の歯先面にはシヨツトが投射され
ず、歯面へのシヨツトの投射量が減少されると共
に、歯底面へのシヨツトの投射量が増加されるた
め、歯底面の疲労強度が向上されると共に、歯先
面及び歯面の粗れが防止されて研削時間が短縮さ
れ、しかも歯車使用時の騒音が低減される等の効
果を奏する。(Effects of the Invention) The present invention has a cover member that covers the tooth tip surface of the gear to be shot peened, which is integrally attached to the rotating shaft. No shot is projected onto the tooth top surface, the amount of shot projected onto the tooth surface is reduced, and the amount of shot projected onto the tooth root surface is increased, which improves the fatigue strength of the tooth root surface. Roughness of the tooth tip and tooth surface is prevented, the grinding time is shortened, and noise during use of the gear is reduced.
第１図は本発明の実施例によつてシヨツトピー
ニングされる歯車と歯車の歯先面を覆うカバー部
材の要部の斜視図、第２図は第１図に示す歯車と
カバー部材を回転軸に装着した状態を示す断面
図、第３図は歯車の回転中に投射されるシヨツト
の投射方向と残留応力の発生個所との相対的な関
係を示す説明図、第４図は従来例の説明図、第５
図は従来例の方法によつて残留応力が発生した個
所を示す要部の断面図である。
１……歯車、２……歯部、３……カバー部材、
４……歯先面、４ａ，４ｂ……歯面、５……歯底
面、６……回転軸。
FIG. 1 is a perspective view of a gear to be shot peened according to an embodiment of the present invention and a main part of a cover member that covers the tooth tip surface of the gear, and FIG. 2 is a perspective view of the gear and cover member shown in FIG. 3 is an explanatory diagram showing the relative relationship between the projection direction of the shot projected during rotation of the gear and the location where residual stress is generated. FIG. 4 is a diagram showing the conventional example. Explanatory diagram, 5th
The figure is a sectional view of a main part showing a location where residual stress is generated by a conventional method. 1... Gear, 2... Teeth, 3... Cover member,
4... Tooth tip surface, 4a, 4b... Tooth surface, 5... Tooth bottom surface, 6... Rotation axis.
Claims (1)
せ、歯部の疲労強度を向上させるシヨツトピーニ
ング方法において、シヨツトピーニングすべき歯
車の歯先面を覆うことができるカバー体を、前記
歯車の歯数と同数で、かつ円周方向に等間隔に放
射状に設けたカバー部材を用い、該カバー部材を
前記カバー体の夫々が前記歯車の歯先面の夫々を
覆うようにして前記歯車と共に回転軸に一体的に
装着し、該回転軸を駆動して前記歯車及びカバー
部材を一体的に回転させながらシヨツトを投射し
て前記歯車をシヨツトピーニングすることを特徴
とする歯車のシヨツトピーニング方法。 ２ 前記カバー体の高さが歯車の全歯たけの0.4
〜0.8倍である特許請求の範囲第１項記載の歯車
のシヨツトピーニング方法。[Claims] 1. A cover capable of covering the tooth tip surface of a gear to be shot peened in a shot peening method in which a shot is projected onto a gear to generate residual stress and improve the fatigue strength of the gear. The cover member has the same number of teeth as the gear and is provided radially at equal intervals in the circumferential direction, and the cover member is arranged so that each of the cover bodies covers each of the tooth tip surfaces of the gear. and integrally mounted on a rotating shaft together with the gear, and shot peening the gear by projecting a shot while driving the rotating shaft to integrally rotate the gear and the cover member. How to shortpeen gears. 2 The height of the cover body is 0.4 of the total tooth depth of the gear.
The method for shot peening a gear according to claim 1, wherein the reduction is 0.8 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18854081A JPS5891118A (en) | 1981-11-24 | 1981-11-24 | Shot peening method for gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18854081A JPS5891118A (en) | 1981-11-24 | 1981-11-24 | Shot peening method for gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5891118A JPS5891118A (en) | 1983-05-31 |
| JPS627245B2 true JPS627245B2 (en) | 1987-02-16 |
Family
ID=16225488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18854081A Granted JPS5891118A (en) | 1981-11-24 | 1981-11-24 | Shot peening method for gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5891118A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6124818A (en) * | 1984-07-14 | 1986-02-03 | Ntn Toyo Bearing Co Ltd | Rolling body of bearing |
| JPH07100300B2 (en) * | 1988-04-14 | 1995-11-01 | 日産自動車株式会社 | Rotor type shot peening machine |
| JP2008100311A (en) * | 2006-10-19 | 2008-05-01 | Ntn Corp | Ball screw nut and manufacturing method thereof |
| CA2709474C (en) | 2009-07-14 | 2016-04-26 | Engineered Abrasives, Inc. | Peen finishing |
-
1981
- 1981-11-24 JP JP18854081A patent/JPS5891118A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5891118A (en) | 1983-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020124402A1 (en) | Method for extending the life of attachments that attach blades to a rotor | |
| EP0868974A3 (en) | Grinding method, surface grinder, work piece support mechanism, and work rest | |
| CN110948380B (en) | A planetary grinding device and a method for optimizing the removal function of the planetary grinding device | |
| JPS627245B2 (en) | ||
| JPH09290362A (en) | Manufacture of light metal-made vehicle wheel lightening weight by increasing fatigue strength of metal and this wheel | |
| IL126561A (en) | Apparatus and method for precision grinding face gears | |
| KR100392465B1 (en) | Shaft pinning method and gear | |
| JP2991012B2 (en) | Wheels for finishing gears | |
| JP3835910B2 (en) | Gear shot peening method and high strength gear obtained thereby | |
| JP2002126993A (en) | Manufacturing method for gear and its machining device | |
| JP2000280120A (en) | Manufacture of gear | |
| JP3969005B2 (en) | Brake rotor grinding method and apparatus | |
| US4756215A (en) | Torque multiplier wrench | |
| JP2852658B2 (en) | Cone clutch | |
| GB2111884A (en) | A device for eliminating deformations and/or denting of the teeth of a gear wheel | |
| US4418454A (en) | Burnishing toothed power transmission members | |
| JPH0398713A (en) | Finishing method for tooth surface of toothed wheel | |
| US4520540A (en) | Fixture for grinding racks | |
| JPH06768A (en) | Shot peening method | |
| JPH06206113A (en) | Cutter | |
| JPH0248219Y2 (en) | ||
| JPH02109685A (en) | Shot peening method for gear | |
| JPH06227372A (en) | Setting method of brake flange | |
| JPH0639857Y2 (en) | Internal tooth honing grinder | |
| JPH0224605Y2 (en) |