JPS58213801A - Composite sintered body - Google Patents
Composite sintered bodyInfo
- Publication number
- JPS58213801A JPS58213801A JP9468982A JP9468982A JPS58213801A JP S58213801 A JPS58213801 A JP S58213801A JP 9468982 A JP9468982 A JP 9468982A JP 9468982 A JP9468982 A JP 9468982A JP S58213801 A JPS58213801 A JP S58213801A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- sprocket
- shaft
- sintered body
- composite sintered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Gears, Cams (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は複合焼結体に関″ｒるものである。更に詳しく
は、複数の物体の軸部乞互に嵌合し工焼結し一体化する
に際し、その接合部分の面積ケ増大し、接合強変ン高め
た複合焼結体に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite sintered body.More specifically, the present invention relates to a composite sintered body. This invention relates to a composite sintered body with increased area and increased bond strength.
従来から、例えば、ギヤとスプロケットとの複合焼結体
馨製造する場合に、ギヤσ）ボス部付根の垂直立上り部
分には０．６から１１１！の丸みぞ付ゆ、かつスプロケ
ットの軸孔の綾部にも型パリができることケ避けるため
に、０．３から０．５餞の型出し面取りケ付けていた。Conventionally, for example, when manufacturing a composite sintered body of a gear and a sprocket, the vertical rising portion of the base of the gear σ) boss has a thickness of 0.6 to 111! In order to avoid mold formation on the round groove and on the tread of the sprocket shaft hole, a 0.3 to 0.5 thickness chamfer was added.
そのために、軸接合部の有効厚さく有効面積）が小さく
なり、両者の接合部ＩＷが低′Ｆするという欠点があっ
た。接合する部品が薄いものであると丸み付けや面取り
の寸法の比率が相対的に大きくなるので、上記の欠点が
著しくなる。Therefore, there is a drawback that the effective thickness and effective area of the shaft joint become small, and the joint IW between the two becomes low. If the parts to be joined are thin, the ratio of rounding and chamfering dimensions will be relatively large, and the above-mentioned drawbacks will be significant.
本発明は、上記の欠点ケ除去することを目的とするもの
である。The present invention aims to eliminate the above-mentioned drawbacks.
丁なわち、本発明は、一つの側面上に突出した軸部ン有
する圧粉体の前記軸部に、他の圧粉体の軸孔娶嵌合して
、両物体？焼結し一体化してなる複合焼結体において、
前記軸部の根元？囲繞する門窩馨形成すると共に、前記
軸部に隣接する側の軸孔の周囲に凸部馨形成することに
よって、軸部と軸孔との係合面Ｆｄｉｗ増大したこと馨
特徴とする複合焼結体に関するものである。後述のよう
に、本発明は、特にギヤやスプロケットなどの厚みの少
ない物体を結合する場合に有効である。That is, in the present invention, the shank of a powder compact having a shank protruding from one side surface is fitted into the shaft hole of another powder compact, so that both objects can be connected to each other. In a composite sintered body formed by sintering and integrating,
The root of the shaft? The composite firing is characterized in that the engaging surface Fdiw between the shaft part and the shaft hole is increased by forming a surrounding portal hole and a convex part around the shaft hole on the side adjacent to the shaft part. It is about the body. As will be described later, the present invention is particularly effective when connecting thin objects such as gears and sprockets.
以下に本発明ヶ図示の実施例に従い更に詳細に説明する
。The present invention will be explained in more detail below according to the illustrated embodiments.
第１図は、ギヤ１およびスプロケット２の複合焼結体の
断面図である。このような物品は、通常両者馨別個の圧
粉体として締り嵌めになるように成形し、それら馨嵌め
合わせて焼結して一体化することによって製造する。FIG. 1 is a sectional view of a composite sintered body of a gear 1 and a sprocket 2. FIG. Such articles are usually manufactured by molding the two powder bodies as separate compacts so that they fit tightly together, and then fitting them together and sintering them to integrate them.
第１図の矢印への部分馨拡大断面図として第２図に示す
。従来の製造法においては、第２図に示すように、ギヤ
１のボスｓ３の根元４は、直角に立上らずに、０．３か
ら１關の丸み６寸けている。It is shown in FIG. 2 as a partially enlarged sectional view taken along the arrow in FIG. 1. In the conventional manufacturing method, as shown in FIG. 2, the base 4 of the boss s3 of the gear 1 does not stand up at a right angle, but is rounded by 6 dimensions from 0.3 to 1 degree.
また、スプロケット２の軸孔５の稜部は、型パリができ
ること？防ぐために、０．６から０．５順の型出し面取
り？付けている。Also, is it possible for the ridge of the shaft hole 5 of the sprocket 2 to form a mold? To prevent this, do you need to chamfer the die in order of 0.6 to 0.5? I'm wearing it.
従ってスプロケット２のボス部の接合部分の有効厚さは
０３から０．５朋少な（なり、その分だけギヤ１とスプ
ロケット２との接合強度が低（ならざる？得ない。この
ことは、スズロケット２の厚さが小さい場合には、面取
り深さの比率が相対的に大きくなるので、強度低下の影
春は無視できなくなる。Therefore, the effective thickness of the joint part of the boss part of sprocket 2 is 0.5 mm less than 0.3 mm, and the joint strength between gear 1 and sprocket 2 is correspondingly low. When the thickness of the rocket 2 is small, the ratio of the chamfer depth becomes relatively large, so that the impact of reduced strength cannot be ignored.
本発明はこのような欠点ケ除夫するものでありその一態
様ン第６図に示す。丁なわち、本発明においては、ギヤ
１のボス３の根元４ケ囲続する凹窩７？形成する。この
口高７の深さＤは、特に限定するものではないが、ギヤ
１の厚さの６分の１以下が好適である。深さＤが大き過
ぎるとギヤ１０強度が低下し、一方深さＤが小さ過ぎる
と、後記の凸部８の高さＨを大きくできないので、いず
れも好ましくない。口高７の形状は環状溝であるが、そ
の断面形状は適宜でよく、スプロケット２の凸Ｍ８ｖ受
は入れる形状であればよい。The present invention eliminates these drawbacks, and one embodiment thereof is shown in FIG. That is, in the present invention, four concave holes 7 surrounding the base of the boss 3 of the gear 1 are provided. Form. Although the depth D of the mouth height 7 is not particularly limited, it is preferably one-sixth or less of the thickness of the gear 1. If the depth D is too large, the strength of the gear 10 will decrease, while if the depth D is too small, the height H of the convex portion 8, which will be described later, cannot be increased, which is not preferable. Although the shape of the mouth height 7 is an annular groove, its cross-sectional shape may be any suitable shape as long as it can accommodate the convex M8v receiver of the sprocket 2.
一方、スプロケット２には、前記の四部７中へ入る環状
の凸部８′ｌ？ｒ：形成する。凸ｓ８の断面形状も図示
の台形状のものに限らず、三角形、扇形など適宜でよい
が、軸孔５の内面と凸部８の軸孔側の面とカ連続しｔこ
面となって、ギヤ１のボス３の根元４の部分へ密接する
ように形成′ｆることか必要である。凸部８０篩さＨは
、前記口高７の深さＤよりもやや小す＜シて適宜定めれ
ばよい。On the other hand, the sprocket 2 has an annular convex portion 8'l? that enters into the four portions 7 mentioned above. r: Form. The cross-sectional shape of the convex s8 is not limited to the trapezoidal shape shown in the figure, but may be triangular, fan-shaped, or other appropriate shapes. , it is necessary to form it in close contact with the base 4 of the boss 3 of the gear 1. The sieving height H of the convex portion 80 may be appropriately determined to be slightly smaller than the depth D of the mouth height 7.
以上のように、ギヤ１およびスプロケット２の軸着部の
形状？変えることによって、ボス３と軸孔５との接合面
積が増大するので、両部品の接合部１ｆ：’２高めるこ
とができる。As mentioned above, the shapes of the shaft attachment parts of gear 1 and sprocket 2? By changing this, the joint area between the boss 3 and the shaft hole 5 increases, so that the joint part 1f:'2 of both parts can be increased.
上記の実施例ぽ、ギヤおよびスプロケットから゛なるも
のであるが、本発明はこれらのみに限定されるものでは
なく、他の適宜の複合焼結体にも応用できるものである
。従っ又、前記軸部（実施例中ではボス３）とは、回転
軸のみならず、取付用スタッド状突起なども包含する。Although the above-mentioned embodiment consists of a gear and a sprocket, the present invention is not limited to these, but can also be applied to other suitable composite sintered bodies. Therefore, the shaft portion (boss 3 in the embodiment) includes not only the rotating shaft but also a stud-like projection for attachment.
第１図は本発明の実施例の縦断面図、第２図は第１図の
矢印への部分の拡大断面図で従来例６示し、第３図は同
部分の拡大断面図で本発明の実施例の構造６示すもので
ある。
１・・・・・ギヤ； ２・・・・・・スプロケッ
ト；３・・・・・・ボス； ４・・・・・根元；５
・・・・・・軸孔； ６・・・用稜部；７・−・・
・・口高； ８・・・・・・凸部；代理人増渕邦彦FIG. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the portion indicated by the arrow in FIG. 1, showing conventional example 6, and FIG. Structure 6 of Example is shown. 1... Gear; 2... Sprocket; 3... Boss; 4... Root; 5
...shaft hole; 6... ridge; 7...
・・・Takashi; 8・・・Convex; Agent Kunihiko Masubuchi
Claims (1)
軸部に、他の圧粉体の軸孔を嵌合して、両物体娶焼結し
一体化した複合焼結体において、前記軸部の根元？囲繞
する口高馨形成すると共に、前記軸部に隣接する側の軸
孔の周囲に凸部を形成することによっ１、軸部と軸孔と
の係合面檀馨増大してなる複合焼結体。 ２ 前記軸部の根元ｆｚｒ：ＦＭ焼する口高の軸方向の
深さ、および前記軸孔の周囲の凸部の軸方向の高さは、
軸ｓ馨有する物体の厚さの３分の１以下である特許請求
の範囲第１項に記載の複合焼結体。 ３ 前記複合焼結体？構成する各物体は、ギヤおよび／
またはスプロケットである特′ｆｆ＋４１１求の範囲第
１項または第２項に記載の複合焼結体。[Scope of Claims] 1. A powder compact having a shaft protruding from one side surface, the shaft hole of another powder compact being fitted into the shaft hole of the other powder compact, and both bodies being sintered and integrated. In the composite sintered body, the root of the shaft? By forming a surrounding mouth height and forming a convex part around the shaft hole on the side adjacent to the shaft part, 1, the engagement surface height between the shaft part and the shaft hole is increased. Concretion. 2 Root fzr of the shaft part: The depth in the axial direction of the mouth height for FM baking and the height in the axial direction of the convex part around the shaft hole are:
The composite sintered body according to claim 1, which has a thickness of one-third or less of the thickness of the object having the axis s. 3 The above composite sintered body? Each component consists of gears and/or
or a sprocket, the composite sintered body according to the range 1 or 2 of the specification 'ff+411.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9468982A JPS58213801A (en) | 1982-06-04 | 1982-06-04 | Composite sintered body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9468982A JPS58213801A (en) | 1982-06-04 | 1982-06-04 | Composite sintered body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58213801A true JPS58213801A (en) | 1983-12-12 |
Family
ID=14117157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9468982A Pending JPS58213801A (en) | 1982-06-04 | 1982-06-04 | Composite sintered body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58213801A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305388A1 (en) * | 1986-05-16 | 1989-03-08 | Nilsen Sintered Products (Australia) Pty Ltd | Method of making multi-chain sprockets |
| JPH0367749U (en) * | 1989-10-26 | 1991-07-02 | ||
| US6413180B1 (en) * | 1999-07-06 | 2002-07-02 | Tsubakimoto Chain Co. | Power transmitting mechanism with silent chain and sprockets |
| JP2008121055A (en) * | 2006-11-10 | 2008-05-29 | Hitachi Powdered Metals Co Ltd | Method for manufacturing composite sintered machine component |
| JP2011190923A (en) * | 2010-03-17 | 2011-09-29 | Sumitomo Electric Sintered Alloy Ltd | Sintered-metal sprocket having mark on side surface |
| JP2016040473A (en) * | 2014-08-12 | 2016-03-24 | Ntn株式会社 | Gear and electric actuator having the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5453605A (en) * | 1977-10-06 | 1979-04-27 | Ricoh Co Ltd | Preparation of sintered parts |
-
1982
- 1982-06-04 JP JP9468982A patent/JPS58213801A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5453605A (en) * | 1977-10-06 | 1979-04-27 | Ricoh Co Ltd | Preparation of sintered parts |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305388A1 (en) * | 1986-05-16 | 1989-03-08 | Nilsen Sintered Products (Australia) Pty Ltd | Method of making multi-chain sprockets |
| JPH0367749U (en) * | 1989-10-26 | 1991-07-02 | ||
| US6413180B1 (en) * | 1999-07-06 | 2002-07-02 | Tsubakimoto Chain Co. | Power transmitting mechanism with silent chain and sprockets |
| JP2008121055A (en) * | 2006-11-10 | 2008-05-29 | Hitachi Powdered Metals Co Ltd | Method for manufacturing composite sintered machine component |
| JP2011190923A (en) * | 2010-03-17 | 2011-09-29 | Sumitomo Electric Sintered Alloy Ltd | Sintered-metal sprocket having mark on side surface |
| JP2016040473A (en) * | 2014-08-12 | 2016-03-24 | Ntn株式会社 | Gear and electric actuator having the same |
| US10520068B2 (en) | 2014-08-12 | 2019-12-31 | Ntn Corporation | Gear and an electric actuator provided therewith |
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