JPS6218364Y2 - - Google Patents
Info
- Publication number
- JPS6218364Y2 JPS6218364Y2 JP1982053515U JP5351582U JPS6218364Y2 JP S6218364 Y2 JPS6218364 Y2 JP S6218364Y2 JP 1982053515 U JP1982053515 U JP 1982053515U JP 5351582 U JP5351582 U JP 5351582U JP S6218364 Y2 JPS6218364 Y2 JP S6218364Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- tool
- steel wire
- inner diameter
- bearings
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Description
【考案の詳細な説明】
この考案は、焼結含油軸受の内径寸法を精密に
仕上げ加工するための治具に関するものである。[Detailed Description of the Invention] This invention relates to a jig for precisely finishing the inner diameter of a sintered oil-impregnated bearing.
焼結含油軸受（以下単に「軸受」と記すことが
ある。）は滑り軸受の一種で、軸との間に適正な
隙間を保つためにはその内径寸法や真円度が重要
である。また、従来は軸受を単体で用いる場合が
多いが、例えばVTRのキヤプスタンのように、
２個の軸受をハウジング内に所定の間隔をおいて
装着して軸を２点で支持する使い方が増え、この
場合には軸受個々の精度だけでなく、２個の軸受
の同心度が特に重要になる。 A sintered oil-impregnated bearing (hereinafter sometimes simply referred to as a "bearing") is a type of sliding bearing, and its inner diameter and roundness are important in order to maintain an appropriate gap between it and the shaft. Additionally, in the past, bearings were often used alone, but for example, in VTR capstans,
Increasingly, two bearings are installed in a housing at a predetermined distance to support the shaft at two points, and in this case, not only the accuracy of the individual bearings, but also the concentricity of the two bearings is particularly important. become.
ところで、軸受の内径はハウジングへの圧入に
よつて変化するために圧入前に仕上げても意味が
なく、組み立て後に適宜の矯正手段を施すことに
なる。そして、その手段としてリーマ加工などの
切削やバーニツシングが従来用いられているが、
前者の場合は軸受面の滲油孔が切削によつて損わ
れる虞れがあり、好ましい手段ではない。一方、
後者の場合は工具の加工部の形状・寸法の修正が
殆ど不可能なため、原料粉、成形や焼結条件など
の変動により軸受部材のスプリングバツク（弾性
復元量）が変化した場合に対応できず、矯正後の
製品のバラツキが大きくなるという難点がある。 By the way, since the inner diameter of the bearing changes when it is press-fitted into the housing, there is no point in finishing it before press-fitting, and appropriate correction means must be applied after assembly. Cutting such as reaming and burnishing have traditionally been used as means for this purpose.
In the former case, there is a risk that the oil seeping holes in the bearing surface may be damaged by cutting, and this is not a preferable method. on the other hand,
In the latter case, it is almost impossible to modify the shape and dimensions of the machined part of the tool, so it is difficult to deal with changes in the spring back (amount of elastic recovery) of the bearing member due to changes in raw material powder, molding and sintering conditions, etc. First, there is a problem that the product after straightening has a large variation.
そこで、使い勝手のより優れたバーニツシング
工具を目指して工夫したのがこの考案であつて、
即ち、その先端をテーパー面の案内部１、後端を
シヤンク部３とする丸棒状部材の胴部２に所定の
太さの鋼線を密に巻き付け、この部分を矯正加工
に用いることをその要旨とするものである。 Therefore, this idea was devised to create a burnishing tool that is more convenient to use.
That is, a steel wire of a predetermined thickness is tightly wound around the body part 2 of a round bar-shaped member whose tip is a tapered guide part 1 and its rear end is a shank part 3, and this part is used for straightening. This is a summary.
第１図はこの考案に係る工具の一実施例を示す
正面図、第２図は第１図から鋼線４を取り除いた
状態の正面図で、各部の名称とその符号は上記の
通りである。 Fig. 1 is a front view showing an embodiment of the tool according to this invention, and Fig. 2 is a front view with the steel wire 4 removed from Fig. 1, and the names and symbols of each part are as above. .
ここで各部の寸法について述べると、１はこの
工具を軸受に挿入し易くする案内部であるから、
その長さや先端の直径Ａは適宜でよいが、後端の
直径Ｂは軸受の内径に対して通り嵌めとなる寸法
に作られる。胴部２はそれより細いが、鋼線４を
巻き付けた状態の外径ＦがＢより若干大きくなる
ようにＣ，Ｄが設定される。Ｆの値が軸受部材の
スプリングバツクを含んで設定されるのは勿論で
ある。なお、ＣとＤを等しくしたものは矯正代が
小さい場合や２個の軸受の心出しに適し、Ｃ＜Ｄ
と直径を漸増させたものは矯正代が大きい場合に
適している。シヤンク部３の寸法は、この工具を
取り付ける加工機次第であるが、通常はＥ＜Ｆに
設定される。 Describing the dimensions of each part here, 1 is a guide part that makes it easy to insert this tool into the bearing.
The length and the diameter A of the tip may be set as appropriate, but the diameter B of the rear end is made to fit into the inner diameter of the bearing. Although the body part 2 is thinner than that, C and D are set so that the outer diameter F with the steel wire 4 wound thereon is slightly larger than B. Of course, the value of F is set including the spring back of the bearing member. Note that setting C and D equal is suitable for cases where the straightening allowance is small or for centering two bearings, and C<D.
The one with a gradually increasing diameter is suitable when the correction cost is large. The dimensions of the shank portion 3 depend on the processing machine to which this tool is attached, but are usually set to E<F.
胴部２に鋼線４を密に巻き付けた状態の断面は
半円形の山と谷が交互に連なる形状を呈し、この
加工部が矯正機能を発揮する。 The cross section of the body 2 with the steel wire 4 wound tightly around it has a shape of alternating semicircular peaks and valleys, and this processed portion exhibits a correction function.
この工具による軸受内径の矯正はハウジングに
軸受を圧入した後で、または圧入と同時に行なわ
れる。いずれの場合にも、この工具を軸受に挿入
すると、加工部の形状に従つて軸受内径は拡張と
収縮を短時間に繰り返し、その間に塑性変形して
所定の寸法に矯正される訳である。 The inner diameter of the bearing is corrected using this tool after or at the same time as the bearing is press-fitted into the housing. In either case, when this tool is inserted into the bearing, the inner diameter of the bearing repeatedly expands and contracts in a short period of time according to the shape of the machined part, during which it is plastically deformed and corrected to a predetermined size.
この考案により得られる効果を列挙すると次の
通りである。先ず、コイルの隣り合う鋼線と胴部
との間の空隙に多量の潤滑油を貯えられるために
矯正が円滑に行なわれ、加工の断続性と相俟つて
少ない発熱で仕上げることができる。 The effects obtained by this invention are listed below. First, since a large amount of lubricating oil can be stored in the gap between the adjacent steel wires and the body of the coil, straightening can be carried out smoothly, and in combination with the intermittent nature of processing, finishing can be achieved with less heat generation.
更に大きな利点は、この工具は鋼線４の交換に
よつてその加工部の外径Ｆを微調整できることで
ある。前述したように、焼結合金は製造過程の諸
因子によつてスプリングバツクがロツト毎に変動
する場合があるが、従来の工具は加工部が本体と
一体で修正できないか、分離型のものも取り付け
部品の関係で殆ど修正できない。これに対して、
この考案によればＦの値を増減自在なので、軸受
内径をより高精度に矯正することができる。 An even greater advantage is that this tool allows fine adjustment of the outer diameter F of the processed portion by replacing the steel wire 4. As mentioned above, the springback of sintered alloys may vary from lot to lot due to various factors in the manufacturing process, but with conventional tools, the machining part is either integrated with the main body and cannot be adjusted, or is of a separate type. It is almost impossible to modify due to the attached parts. On the contrary,
According to this invention, since the value of F can be increased or decreased, the inner diameter of the bearing can be corrected with higher precision.
第１図はこの考案に係る工具の一実施例を示す
正面図、第２図は第１図から鋼線４を取り除いた
状態の正面図である。
１……案内部、２……胴部、３……シヤンク
部、４……鋼線。
FIG. 1 is a front view showing an embodiment of the tool according to this invention, and FIG. 2 is a front view with the steel wire 4 removed from FIG. 1. 1...Guide part, 2...Body part, 3...Shank part, 4...Steel wire.
Claims (1)
端をシヤンク部３とし、中間の胴部２に所定の太
さの鋼線４を密に巻き付けた加工部を形成したこ
とを特徴とする焼結軸受の内径仕上げ用工具。 The tip of the round rod-shaped member is a tapered guide part 1, the rear end is a shank part 3, and the intermediate body part 2 is formed with a processed part in which a steel wire 4 of a predetermined thickness is tightly wound. A tool for finishing the inner diameter of sintered bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5351582U JPS58157556U (en) | 1982-04-13 | 1982-04-13 | Tool for finishing the inner diameter of sintered bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5351582U JPS58157556U (en) | 1982-04-13 | 1982-04-13 | Tool for finishing the inner diameter of sintered bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58157556U JPS58157556U (en) | 1983-10-20 |
| JPS6218364Y2 true JPS6218364Y2 (en) | 1987-05-12 |
Family
ID=30064175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5351582U Granted JPS58157556U (en) | 1982-04-13 | 1982-04-13 | Tool for finishing the inner diameter of sintered bearings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58157556U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239736Y2 (en) * | 1984-11-15 | 1990-10-24 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51107264A (en) * | 1975-03-18 | 1976-09-22 | Toyota Motor Co Ltd | PANITSUSHINGUKOGU |
-
1982
- 1982-04-13 JP JP5351582U patent/JPS58157556U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51107264A (en) * | 1975-03-18 | 1976-09-22 | Toyota Motor Co Ltd | PANITSUSHINGUKOGU |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58157556U (en) | 1983-10-20 |
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