JPS6314804A - Production of pulse gear - Google Patents
Production of pulse gearInfo
- Publication number
- JPS6314804A JPS6314804A JP15819486A JP15819486A JPS6314804A JP S6314804 A JPS6314804 A JP S6314804A JP 15819486 A JP15819486 A JP 15819486A JP 15819486 A JP15819486 A JP 15819486A JP S6314804 A JPS6314804 A JP S6314804A
- Authority
- JP
- Japan
- Prior art keywords
- pulse gear
- molding
- die
- molded body
- tooth
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000010409 ironing Methods 0.000 claims abstract description 16
- 239000000696 magnetic material Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 abstract description 2
- 235000013372 meat Nutrition 0.000 description 5
- 230000013011 mating Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 101100145155 Escherichia phage lambda cIII gene Proteins 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、パルスギヤの製造方法に関し、詳細には、パ
ルスギヤを備えた軸部材の回転数検知に用いられ、高い
ピッチ精度および寸法精度を要求されるパルスギヤの製
造方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a pulse gear, and in particular, it is used to detect the rotation speed of a shaft member equipped with a pulse gear, and requires high pitch accuracy and dimensional accuracy. The present invention relates to a method of manufacturing a pulse gear.
自動車の制動装置比おいて、急制動時の車輪のロックを
防ぐために、いわゆるアンチスキッドブレーキが実用化
されている。Among automobile braking systems, so-called anti-skid brakes have been put into practical use to prevent wheels from locking during sudden braking.
これは、車輪の回転数を検出することにより車輪のスリ
ップ状態を判別し、タイヤと路面の最大摩擦力を保持す
るように、ブレーキ液圧を制御するものである。そして
、車輪の回転数の検出には、車軸に備えた所定のセレー
ション配列を有するパルスギヤを車軸と共に回転させ、
それに電磁ピックアップを近接して固定し、車輪回転数
に比例した周波数のパルスを発生させる速度検出装置を
使用する。This system determines whether the wheels are slipping by detecting the number of rotations of the wheels, and controls the brake fluid pressure to maintain the maximum frictional force between the tires and the road surface. To detect the rotation speed of the wheel, a pulse gear having a predetermined serration arrangement provided on the axle is rotated together with the axle.
An electromagnetic pickup is fixed close to it, and a speed detection device is used that generates pulses with a frequency proportional to the wheel rotation speed.
このパルスギヤは、プレス加工により成形されたものを
、一体にしたり（特開昭５６−４３８１６号）、または
、要求精度が高い場合は、粉末成形材料を焼結後、寸法
矯正により所定の形状まで仕上げていた。This pulse gear can be formed by press processing and then integrated into one piece (Japanese Patent Laid-Open No. 56-43816), or if the required accuracy is high, the powder molding material is sintered and then dimensionally corrected to the desired shape. I was finishing it.
そして、この焼結による場合は、第４図に示すような寸
法矯正装置１００により、行われていた。In the case of this sintering, a dimension correction apparatus 100 as shown in FIG. 4 was used.
寸法矯正装ｆｌｏｏは、外型としてのダイス１０２と中
央のコア１０４とで郭定される充填空間１０６に、成形
体１０８を上パンチ１１０により上方より押し込み、下
パンチ１１２とで圧縮して寸法矯正を行うようになって
いる。In the dimension correction device floo, a molded body 108 is pushed into a filling space 106 defined by a die 102 as an outer mold and a central core 104 from above with an upper punch 110 and compressed with a lower punch 112 to correct the dimensions. It is designed to do this.
このような焼結によるパルスギアの製造方法によれば、
寸法矯正の際、第５図に示すように、寸法矯正されたパ
ルスギヤ１１４の歯先１１６の肉がかき上げられたり、
歯底の角１１８の肉が引けたりすることがあった。これ
によれば、歯の寸法精度が低下し、発生するパルスが一
定しなくなる問題があった。According to this method of manufacturing a pulse gear by sintering,
When the dimensions are corrected, as shown in FIG.
The meat at the corner 118 of the bottom of the tooth sometimes pulled out. According to this, there was a problem that the dimensional accuracy of the teeth decreased and the generated pulses became inconsistent.
したがって、本発明の目的は、焼結材料の寸法矯正によ
るパルスギヤの製造に当たって、寸法精度が高く、パリ
の発生しない加工方法を提供することにある。Accordingly, an object of the present invention is to provide a processing method that has high dimensional accuracy and does not generate flash when manufacturing a pulse gear by dimensional correction of sintered material.
そこで、本発明は、寄せ加工およびしごき加工を兼ねた
寸法矯正を行うことにより、寸法精度を保ちつつ型合わ
せ面におけるパリの発生をな（したことを特徴とする。Therefore, the present invention is characterized in that by carrying out dimensional correction that combines grading processing and ironing processing, the occurrence of flash on the mold mating surfaces can be prevented while maintaining dimensional accuracy.
具体的には、本発明はパルスギヤを製造する方法であり
、次の構成からなる。Specifically, the present invention is a method for manufacturing a pulse gear, and has the following configuration.
製造されるパルスギヤは、リング状をしており、軸部材
に取り付けられる。パルスギヤには、内歯もしくは外歯
が形成されている。それらの歯は、磁性体からなり、所
定のセレーション配列を有しており、軸部材の回転に応
じて回転し、回転数検出用センサに磁束変化を生じさせ
るようになっている。The manufactured pulse gear has a ring shape and is attached to a shaft member. The pulse gear has internal or external teeth. These teeth are made of a magnetic material, have a predetermined serration arrangement, and rotate in accordance with the rotation of the shaft member, causing a change in magnetic flux to the rotational speed detection sensor.
このパルスギヤを製造するに当たって、まず、予め成形
されたパルスギヤ成形体を備えた軸部材を準備する。次
に、前記成形体の寸法矯正を行う。In manufacturing this pulse gear, first, a shaft member provided with a pre-formed pulse gear molded body is prepared. Next, the dimensions of the molded body are corrected.
この寸法矯正工程は、歯部の側に受は型を配設した状態
で、前記成形体の歯部の裏側に可動型を押し当ててしご
き加工を行うものである。そして、その成形体の歯部と
固定型との間には、空隙が残されており、可動型の作動
によりしごき加工と同時に寄せ加工が行われる。In this dimensional correction process, a movable mold is pressed against the back side of the tooth portion of the molded body to perform ironing with a support mold disposed on the side of the tooth portion. A gap is left between the teeth of the molded body and the stationary mold, and the movable mold is operated to perform the ironing process and the pressing process at the same time.
上記した本発明の構成において、パルスギヤ成形体は、
金属、セラミックス等の粉末材料を成形後、焼結したも
の、もしくは、機械加工、望性加工で略完成品形状まず
加工されたものであってもよい。In the configuration of the present invention described above, the pulse gear molded body is
The material may be formed by molding a powder material such as metal or ceramics and then sintered, or may be processed into a substantially finished product shape by machining or desirability processing.
また、パルスギヤは、少なくともその歯部が磁性体より
形成されていればよいが、パルスギヤ全体を磁性体から
構成してもよい。Further, the pulse gear only needs to have at least its teeth made of a magnetic material, but the entire pulse gear may be made of a magnetic material.
以上のような本発明にかかるパルスギヤの製造方法は、
しごき加工を行うので、パルスギヤ成形体に対し、反対
側より固定型に向けた水平方向の力が作用するため、型
合わせ面に肉が入り込まない。また、寸法矯正をしごき
加工と同時に寄せ加工により行うので、歯部の軸方向へ
の移動が固定型に密着しないで行われ、歯部のかき上げ
や、歯底端部の引けが生じない。The method for manufacturing a pulse gear according to the present invention as described above is as follows:
Since the ironing process is performed, a horizontal force is applied to the pulse gear molded body from the opposite side toward the fixed mold, so that the meat does not enter the mold mating surface. In addition, since dimensional correction is performed simultaneously with the ironing process and by the shifting process, the tooth part is moved in the axial direction without coming into close contact with the fixed mold, and the tooth part is not scraped up or the bottom end of the tooth is pulled down.
次に、本発明の実施例を図面を参考にして説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
ここで、第１図は、本発明の実施例にかかるパルスギヤ
の製造に使用されるしごき加工装置の断面を示し、成形
体がキャビキイに装填された加工前の状態を示す図、第
２図は、第１図のｎ−ｎ線矢視断面図、そして、第３図
は、本発明の実施例にかかる第１図と同様の断面図であ
って、成形体の加工終了時の状態を示す図である。Here, FIG. 1 shows a cross section of an ironing device used for manufacturing a pulse gear according to an embodiment of the present invention, and shows a state before processing in which a molded body is loaded into a cavity key, and FIG. , a sectional view taken along the line nn in FIG. 1, and FIG. 3 a sectional view similar to FIG. It is a diagram.
第１図において、しごき加工装置１０は、工作物の外径
を形成する固定型のダイス１２と、ダイス１２の内側下
方に配設される下パンチ１４と、その上に配設され、装
填される工作物を押さえる上パンチ１６と、中央上方に
下降可能に設けられた可動型としてのマンドレル１８と
からなる。ダイス１２は、第２図に示すように、内側に
工作物（パルスギヤ成形体）２０の歯部の形状をした突
起部１２ａおよび溝部１２ｂが形成されている。In FIG. 1, the ironing device 10 includes a fixed die 12 that forms the outer diameter of a workpiece, a lower punch 14 disposed inside and below the die 12, and a lower punch 14 disposed above and loaded. It consists of an upper punch 16 that holds down the workpiece, and a mandrel 18 as a movable type that is provided above the center so that it can be lowered. As shown in FIG. 2, the die 12 has protrusions 12a and grooves 12b shaped like the teeth of a workpiece (pulse gear molded body) 20 formed inside thereof.
下パンチ１４は、工作物であるパルスギヤ成形体２０の
挿入および払出し時に上下動するようになっている。ま
た、マンドレル１８は、先端部１８ａがテーパ上の略円
筒状をしている。The lower punch 14 is configured to move up and down when inserting and discharging the pulse gear molded body 20, which is a workpiece. Further, the mandrel 18 has a tapered substantially cylindrical tip end 18a.
このしごき加工装置１０を用いた工作物としてのパルス
ギヤの製造方法について説明する。A method of manufacturing a pulse gear as a workpiece using this ironing device 10 will be described.
まず、予めパルスギヤの成形体２０を作製しておく。成
形体２０には、第２図に示すように、外径側に歯部２０
ａが形成されている。歯部２０ａの歯丈は、４ｆｉとし
た。成形体２０は、５ＵＳ４３０（ＪＩＳ規格）相当の
フェライト系金属粉を約６ｔ／ｃＩＩＩで成形後、減圧
雰囲気巾約１２００℃の温度で１時間の加熱を行い製造
した。この成形体２０は、その外径が、ダイス１２の内
径より少し小さく成形されている。First, a pulse gear molded body 20 is prepared in advance. As shown in FIG. 2, the molded body 20 has teeth 20 on the outer diameter side.
a is formed. The tooth height of the tooth portion 20a was set to 4fi. The molded body 20 was manufactured by molding ferritic metal powder equivalent to 5US430 (JIS standard) at about 6 t/cIII and then heating it at a temperature of about 1200° C. in a reduced pressure atmosphere for 1 hour. The molded body 20 has an outer diameter slightly smaller than the inner diameter of the die 12.
しごき加工装置１０の下パンチ１４をダイス１２の上部
付近まで上昇させておく。その状態で、成形体２０をダ
イス１２と下パンチ１４で形成されるキャビティ内へ装
填する。その後、下バンチ１４を下降させる。下バンチ
１４が第１図に示す位置まで加工してから、上パンチ１
６を下降させ、下パンチ１４との間で成形体２０を挟持
する。このとき、成形体２０の内径は、下パンチ１４お
よび上バンチ１６の内径より幾分小さくされており、中
心へ突出している。成形体２０を挟持した状態で、マン
ドレル１８を下降させ、成形体２０の中央への突出部分
を外方へと押し退けつつ、寄せ加工としごき加工を同時
に行う、マンドレル１８が下降し終わり、第３図に示す
状態になった後、上下パンチ１４．１６が上昇して、パ
ルスギヤが取り出される。The lower punch 14 of the ironing device 10 is raised to near the top of the die 12. In this state, the molded body 20 is loaded into the cavity formed by the die 12 and the lower punch 14. After that, the lower bunch 14 is lowered. After processing the lower bunch 14 to the position shown in FIG.
6 is lowered, and the molded body 20 is held between it and the lower punch 14. At this time, the inner diameter of the molded body 20 is made somewhat smaller than the inner diameters of the lower punch 14 and the upper bunch 16, and protrudes toward the center. While holding the molded body 20, the mandrel 18 is lowered, and while pushing away the protruding portion of the molded body 20 toward the center, the finishing process and ironing process are performed at the same time. After reaching the state shown in the figure, the upper and lower punches 14, 16 are raised and the pulse gear is taken out.
マンドレル１８のストロークに応じた加工状態を説明す
る。マンドレル１８のストロークの９０％は、成形体２
０とダイス１２が接触しておらず、主に寄せが行われ、
水平方向に肉が流れている。The processing state according to the stroke of the mandrel 18 will be explained. 90% of the stroke of the mandrel 18 is the molded body 2
0 and dice 12 are not in contact, and the main result is a close-up,
Meat flows horizontally.
また、残りの１０％は、主にしごきが行われ、軸方向に
肉が流れている。The remaining 10% is mainly squeezed, and the meat flows in the axial direction.
したがって、歯部のかき上げや、歯底端部のひけが生じ
に（い。また、水平方向の肉の流れが多いため、型合わ
せ面にパリが生じにくい。Therefore, there is no risk of scraping of the teeth or sinking of the bottom end of the teeth.Furthermore, since there is a lot of horizontal flow of the meat, it is difficult for the mold mating surfaces to form burrs.
このように作られたパルスギヤの加工精度を調べたので
、本性による寸法矯正前および従来例と合わせて次表に
示す。The machining accuracy of the pulse gear made in this way was investigated and is shown in the table below, together with the results before the original dimensional correction and the conventional example.
上表より、本発明方法の実施例は、歯部のパリがほとん
ど無く、また、歯のピッチ誤差、同心度等の寸法精度も
略満足していることが分る。さらに、上記実施例のパル
スギヤ成形体の焼結密度が７５〜９５％のものは、歯部
のパリが全く生じない上に、寸法精度も良いことが分る
。From the above table, it can be seen that in the examples of the method of the present invention, there is almost no burr in the teeth, and the dimensional accuracy such as pitch error and concentricity of the teeth is also approximately satisfied. Furthermore, it can be seen that the pulse gear molded bodies of the above examples having sintered densities of 75 to 95% do not have any cracks in the teeth and have good dimensional accuracy.
以上、本発明の特定の実施例について説明したが、本発
明は上記実施例に限定されるものではなく、特許の範囲
内において種々の実施態様を包含するものである。Although specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, but includes various embodiments within the scope of the patent.
以上により、本発明のパルスギヤの製造方法によれば、
寄せ加工およびしごき加工を兼ねた寸法矯正を行うので
、型合わせ面に成形体の肉が入り込むことが無く、完成
したパルスギヤの歯部にパリが発生しない。また、しご
き加工により、歯部の寸法精度を高く保持できる。As described above, according to the pulse gear manufacturing method of the present invention,
Since the dimensional correction is carried out by combining processing and ironing, the flesh of the molded product will not enter the mold matching surface, and no cracks will occur in the teeth of the completed pulse gear. In addition, ironing allows the dimensional accuracy of the tooth portion to be maintained at a high level.
第１図は、本発明の実施例にかかるパルスギヤの製造に
使用されるしごき加工装置の断面を示し、成形体がキャ
ビキイに装填された加工前の状態を示す図、
第２図は、第１図のｎ−ｎ線矢視断面図、第３図は、本
発明の実施例にかかる第１図と同様の断面図であって、
成形体の加工終了時の状態を示す図、
第４図は、従来例の矯正装置の縦断面図、第５図は、従
来例の矯正装置により加工されたパルスギヤの部分断面
図である。
１０−・・・−しごき加工装置
１２−・−・・・ダイス（固定型）
１８・−−一−−・マンドレル（可動型）２０・・−−
一一−パルスギヤ成形体
出願人 トヨタ自動車株式会社
第３図FIG. 1 shows a cross section of an ironing device used for manufacturing a pulse gear according to an embodiment of the present invention, and shows a state before processing in which a molded body is loaded into a cavity key. The sectional view taken along line nn in the figure, FIG. 3 is a sectional view similar to FIG. 1 according to the embodiment of the present invention,
FIG. 4 is a longitudinal cross-sectional view of a conventional straightening device, and FIG. 5 is a partial cross-sectional view of a pulse gear machined by the conventional straightening device. 10--Ironing processing device 12--Dice (fixed type) 18--Mandrel (movable type) 20--
11-Pulse gear molded body applicant Toyota Motor Corporation Figure 3
Claims (1)
回転に応じて所定の磁束変化を回転数検出用センサに生
じさせるセレーション配列を有する磁性体からなる内歯
もしくは外歯を備えたパルスギヤの製造方法であって、 予め成形されたパルスギヤ成形体を準備する工程と、 前記成形体の寸法矯正工程とからなり、 前記寸法矯正工程は、前記成形体をその歯側と固定型と
の間に空隙を残した状態で、それと反対側より可動型を
作動させて、成形体の歯部を固定型へ肉寄せしつつしご
き加工を行うことを特徴とするパルスギヤの製造方法。[Claims] An inner tooth or ring that is attached to a shaft member, is ring-shaped, and is made of a magnetic material and has a serration arrangement that causes a predetermined change in magnetic flux to occur in a rotation speed detection sensor in accordance with the rotation of the shaft member. A method for manufacturing a pulse gear with external teeth, the method comprising: preparing a pre-formed pulse gear molded body; and correcting dimensions of the molded body, the dimension straightening step changing the molded body to its tooth side. Manufacturing of a pulse gear characterized in that, with a gap left between the mold and the fixed mold, a movable mold is operated from the opposite side, and ironing is performed while the teeth of the molded body are brought closer to the fixed mold. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15819486A JPS6314804A (en) | 1986-07-04 | 1986-07-04 | Production of pulse gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15819486A JPS6314804A (en) | 1986-07-04 | 1986-07-04 | Production of pulse gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6314804A true JPS6314804A (en) | 1988-01-22 |
Family
ID=15666326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15819486A Pending JPS6314804A (en) | 1986-07-04 | 1986-07-04 | Production of pulse gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6314804A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289717A (en) * | 2021-11-19 | 2022-04-08 | 蓝山县金山川粉末冶金有限公司 | Gear preparation mould with annular groove |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5741303A (en) * | 1980-08-26 | 1982-03-08 | Toyota Motor Corp | Production of pulley having groove on outer circumference |
-
1986
- 1986-07-04 JP JP15819486A patent/JPS6314804A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5741303A (en) * | 1980-08-26 | 1982-03-08 | Toyota Motor Corp | Production of pulley having groove on outer circumference |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289717A (en) * | 2021-11-19 | 2022-04-08 | 蓝山县金山川粉末冶金有限公司 | Gear preparation mould with annular groove |
| CN114289717B (en) * | 2021-11-19 | 2024-05-10 | 蓝山县金山川粉末冶金有限公司 | Gear preparation mould with annular groove |
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