JPS6230060B2 - - Google Patents
Info
- Publication number
- JPS6230060B2 JPS6230060B2 JP57174619A JP17461982A JPS6230060B2 JP S6230060 B2 JPS6230060 B2 JP S6230060B2 JP 57174619 A JP57174619 A JP 57174619A JP 17461982 A JP17461982 A JP 17461982A JP S6230060 B2 JPS6230060 B2 JP S6230060B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- punch
- mold
- precision
- hollow
- 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
- 239000002893 slag Substances 0.000 claims description 60
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000007769 metal material Substances 0.000 claims description 6
- 239000000047 product Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 10
- 238000007796 conventional method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 241000237858 Gastropoda Species 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/04—Shaping in the rough solely by forging or pressing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は冷間成形高精度スラグ製造方法に係
り、特に冷間成形により両端面平行度、平面度、
外周と両端面との直角度、更には外径と内径との
同軸心度を高精度に成形し得る中空円筒状の金属
スラグ製造方法に関し、各種ギヤの成形素材、自
動車用電装部品であるスタータ用オーバラニング
クラツチスリーブ、ACG用ヨーク等の成形素材
に広く利用される。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for producing high-precision cold-formed slag, and in particular, cold-forming improves the parallelism, flatness, and
Regarding the manufacturing method of hollow cylindrical metal slugs that can be formed with high accuracy in the perpendicularity between the outer periphery and both end faces, as well as the coaxiality between the outer diameter and the inner diameter, it is used as a molding material for various gears and as a starter, which is an electrical component for automobiles. Widely used as a molding material for overbalancing clutch sleeves, yokes for ACG, etc.
ここで高精度スラグとは、第１図において、一
方の端面１ａに対して外周１ｂの直角度、他方の
端面１ｃとの平行度、各端面１ａ，１ｃの平面度
更には最大外径寸法のバラツキが少ないスラグを
意味し、中心に孔を有する中空スラグにあつては
上記各精度のほか更に外径と内径との同軸度のバ
ラツキの少ないスラグを意味する。 Here, high-precision slag refers to the perpendicularity of the outer periphery 1b to one end surface 1a, the parallelism with the other end surface 1c, the flatness of each end surface 1a, 1c, and the maximum outer diameter dimension as shown in FIG. It means a slug with little variation, and in the case of a hollow slug with a hole in the center, it means a slug with little variation in coaxiality between the outer diameter and the inner diameter in addition to the above-mentioned accuracy.
このような高精度なスラグは、円柱状の金属素
材を冷間成形することによつて製造される。ま
た、このようなスラグは、例えばSCM415等の肌
焼鋼を素材として成形され、成形後の製品スラグ
は各種の歯車あるいは高精度の円筒状部品に加工
される。また、スラグ素材としては歯車鍛造用等
の鍛造素材が通常使用され、例えば、肌焼鋼でも
あるJIS規格SCM415等の鍛造素材が使用され
る。 Such highly precise slugs are manufactured by cold forming a cylindrical metal material. Further, such slag is formed using case-hardened steel such as SCM415, and the product slag after forming is processed into various gears or high-precision cylindrical parts. Further, as the slag material, a forged material for gear forging is usually used, and for example, a forged material such as JIS standard SCM415, which is also case hardened steel, is used.
従来のこのような高精度スラグの製造方法の代
表的例が特開昭54―125153号に記載されている。
A typical example of a conventional method for manufacturing high-precision slag is described in Japanese Patent Application Laid-Open No. 125153/1983.
この従来方法にあつては、円柱状金属素材を上
下端から加圧して外周が樽状のスラグ半製品を予
め成形しておき、第２図に示す如く、最終工程で
は前記樽状のスラグ半製品２を製品外径より小さ
い内径を有する中空金型３に対しパンチ４によつ
て押圧貫通させ、スラグ半製品の外周２ｂをしご
くだけの工程によりスラグ製品を得ていた。この
ためスラグ製品は外径精度を加工することはでき
たが両端面の平行度あるいは外径に対する両端面
の直角度等の点では精度を加工することができな
かつた。即ち、従来方法よつて得られる製品スラ
グ５は、例えば第３図に示すような形状となり、
両側端面５ａおよび５ｃの平面度が0.8mm程度あ
り、各端面５ａ，５ｃの外周５ｂに対する直角度
が不安定であるのみならず外径寸法自体も0.1mm
程度のバラツキがあり、歯車等の精密部品の加工
に適した高精度なスラグが得られないという問題
があつた。また、第３図に示すような従来の製品
スラグを用いてプレス加工用ポンチにより孔抜き
加工すると、平面度が劣りかつ外径寸法のバラツ
キが大きいという理由から内外径の同軸精度が得
られない。又別工程で穴抜きするため工程も多い
という欠点があつた。 In this conventional method, a slag semi-finished product with a barrel-shaped outer periphery is formed in advance by pressurizing a cylindrical metal material from the top and bottom ends, and as shown in Fig. 2, the barrel-shaped slag semi-finished product is A slag product was obtained by a process in which the product 2 was pressed through a hollow mold 3 having an inner diameter smaller than the outer diameter of the product using a punch 4, and the outer periphery 2b of the semi-finished slag product was squeezed. For this reason, although it was possible to machine slag products with precision in the outer diameter, it was not possible to machine them with precision in terms of the parallelism of both end faces or the perpendicularity of both end faces to the outer diameter. That is, the product slag 5 obtained by the conventional method has a shape as shown in FIG. 3, for example,
The flatness of both end faces 5a and 5c is approximately 0.8 mm, and not only the perpendicularity of each end face 5a, 5c to the outer circumference 5b is unstable, but also the outer diameter itself is 0.1 mm.
There was a problem that there were variations in the degree of slag, making it impossible to obtain a highly accurate slag suitable for processing precision parts such as gears. Furthermore, when punching a hole using a press punch using a conventional product slug as shown in Figure 3, coaxial accuracy of the inner and outer diameters cannot be obtained due to poor flatness and large variations in outer diameter dimensions. . Another drawback was that there were many steps involved since the holes were punched in a separate process.
本発明の目的は製品加工に好適な寸法精度を有
する冷間成形高精度スラグの製造方法を提供する
にある。
An object of the present invention is to provide a method for manufacturing high-precision cold-formed slag having dimensional accuracy suitable for product processing.
本発明の特徴は、円柱状金属素材を上下端面か
ら圧縮して得られた樽状の中間スラグを中空金型
により外周をしごくと同時にこの金型内で上下端
面より圧縮して二次中間スラグを形成し、その後
同一金型内にて中空形状に押圧成形する高精度ス
ラグの製造方法に関する。
A feature of the present invention is that a barrel-shaped intermediate slag obtained by compressing a cylindrical metal material from the upper and lower end faces is squeezed on the outer periphery using a hollow mold, and simultaneously compressed from the upper and lower end faces within this mold to form a secondary intermediate slag. The present invention relates to a method for producing a high-precision slag, which is formed by forming a slag and then press-molding it into a hollow shape in the same mold.
以下第４〜第１１図を参照して本発明の実施例
を説明する。 Embodiments of the present invention will be described below with reference to FIGS. 4 to 11.
本発明を実施するにあたつてはまず、第４図に
示すような円柱状金属素材６を使用し、その上下
端面６ａ，６ｃを加圧して第５図に示すような外
周２ｂが弧状に膨出した樽状の中間スラグ２を製
作する。この工程においては加圧時においても倒
れや位置ずれ等の極めて少ない動的精度の高いプ
レスを使用し、上下端面２ｂ，２ｃの間で高い平
行度を得る。尚、前記素材６から前記中間スラグ
２への加圧工程では大きな加工率で加工すること
が可能であり、例えば70〜80％の加工率で圧縮す
る。 In carrying out the present invention, first, a cylindrical metal material 6 as shown in FIG. 4 is used, and its upper and lower end surfaces 6a, 6c are pressurized so that the outer periphery 2b is shaped like an arc as shown in FIG. A swollen barrel-shaped intermediate slag 2 is manufactured. In this step, a press with high dynamic precision is used, which causes very little collapse or displacement during pressurization, and high parallelism is achieved between the upper and lower end surfaces 2b and 2c. In addition, in the pressurizing process from the material 6 to the intermediate slag 2, it is possible to process at a large processing rate, for example, compression at a processing rate of 70 to 80%.
第６図は前記中間スラグ２の加工前配置状態を
示す要部断面図、第７図は同二次中間スラグの打
抜き状態を示す工程図である。 FIG. 6 is a cross-sectional view of a main part showing the arrangement state of the intermediate slug 2 before processing, and FIG. 7 is a process diagram showing the state of punching out the secondary intermediate slug.
まず第７図において、冷間プレス装置はベース
１２にガイド筒１３を保持した外筒１４と、ガイ
ド筒１３に載置され、取付ナツト１５により外筒
１４に固定された中空金型１０と、前記ガイド筒
１３及び中空金型１０内に上下にスライド自在に
滑合され、自重で降下しないようにガイド筒１３
の半径方向から常時数個の制動片１６が圧接され
たカウンターパンチ１７とからなる受型部と、前
記中空金型１０と同心的に配置され断面Ｔ字状の
受圧板８と、該受圧板の心棒１８ａにスライド可
能に滑合され移動距離を規制するシリンダーブロ
ツク１９により外周部を保持されたピストンブロ
ツク２０と、該ピストンブロツクの下端面に対接
され取付ナツト２１により締付された中空状のア
ウターパンチ２２と、該アウターパンチを貫通し
アウターパンチ２２により受圧板１８の心棒１８
ａの下面に当接されているインナーパンチ２３と
からなる押圧部とから構成されている。 First, in FIG. 7, the cold press apparatus includes an outer cylinder 14 holding a guide cylinder 13 on a base 12, a hollow mold 10 placed on the guide cylinder 13 and fixed to the outer cylinder 14 with a mounting nut 15, The guide tube 13 is slidably fitted into the guide tube 13 and the hollow mold 10 so as to be slidable up and down, and is prevented from falling under its own weight.
a receiving mold part consisting of a counter punch 17 to which several brake pieces 16 are always pressed from the radial direction; a pressure receiving plate 8 having a T-shaped cross section and arranged concentrically with the hollow mold 10; and the pressure receiving plate 8. A piston block 20 is slidably fitted onto a shaft 18a of the piston block and its outer circumferential portion is held by a cylinder block 19 that regulates the travel distance; The outer punch 22 passes through the outer punch and the outer punch 22 causes the shaft 18 of the pressure receiving plate 18 to
It is comprised of a pressing part consisting of an inner punch 23 which is in contact with the lower surface of the a.
尚、中空金型１０は入口を逆円錐台状のテーパ
部１０ａとしており、該テーパ部の下方は内周面
のストレート部１０ｂと連続している。又インナ
ーパンチ２３の頭部２３ａは逆円錐台形となつて
いて冷鍛加工に適切な形状となつている。 The hollow mold 10 has an entrance formed into a tapered part 10a in the shape of an inverted truncated cone, and the lower part of the tapered part is continuous with a straight part 10b on the inner circumferential surface. The head 23a of the inner punch 23 has an inverted truncated cone shape, which is suitable for cold forging.
上記構成において、加工のインナーパンチ１７
の上面は受圧板１８が上方向にあるため中空金型
１０の上面とほぼ同一の高さに位置している。
（第６図）この状態で中間スラグ２をインナーパ
ンチ１７のほぼ中心に配置し、その後アウターパ
ンチ２２を下降させる。すると樽状の中間スラグ
２は外周２ｂがテーパ部１０ａ及びストレート部
１０ｂによりしごかれ所定寸法の外径となると共
に両端面２ａ，２ｃもカウンターパンチ１７とア
ウターパンチ２２により圧縮成形され、外径寸法
と共に平行度、平面度が仕上げられていく。ここ
で得られたスラグは二次中間スラグと称される。
この時点でアウターパンチ２２に滑合されている
インナーパンチ２３が第７図の受圧板１８の心棒
１８ａの下面と接すると打抜き時の加圧力の支持
が得られる。更に二次中間スラグを中空金型１０
に拘束したままアウターパンチ２２が下降し、剪
断加工が開始され穴３０ｄが打抜かれ第８図に示
すような平行度及び平面度、並びにこれら各端面
と内外周との直角度が高精度に形成されスラグ製
品が得られる。 In the above configuration, the processing inner punch 17
The upper surface is located at approximately the same height as the upper surface of the hollow mold 10 because the pressure receiving plate 18 is located upward.
(FIG. 6) In this state, the intermediate slug 2 is placed approximately at the center of the inner punch 17, and then the outer punch 22 is lowered. Then, the outer periphery 2b of the barrel-shaped intermediate slag 2 is squeezed by the tapered part 10a and the straight part 10b to have a predetermined outer diameter, and both end surfaces 2a and 2c are also compression-molded by the counter punch 17 and the outer punch 22, and the outer diameter Parallelism and flatness are refined along with dimensions. The slag obtained here is called secondary intermediate slag.
At this point, when the inner punch 23, which is slidably fitted to the outer punch 22, comes into contact with the lower surface of the shaft 18a of the pressure receiving plate 18 shown in FIG. 7, support for the pressing force during punching is obtained. Furthermore, the secondary intermediate slag is placed in the hollow mold 10.
The outer punch 22 is lowered while being restrained by the hole 30d, and the shearing process is started to punch out the hole 30d, and the parallelism and flatness as shown in FIG. A slag product is obtained.
このようにして加工されたスラグ２はノツクア
ウトピンＰを上方に移動させることでカウンター
パンチ１７を押上げて当初の位置まで戻すことに
より取り出される。そしてアウターパンチ２２は
元の位置に復帰し次の作業に備える。 The slag 2 processed in this manner is taken out by moving the knockout pin P upward to push up the counter punch 17 and return it to its original position. The outer punch 22 then returns to its original position and prepares for the next operation.
本実施例の他、例えば樽状の中間スラグを形成
した後、外周面及び平行面を仕上げた二次中間ス
ラグを形成し、それを別途プレス機械により穴打
抜き加工することも考えられるがスラグを保持す
るための金型が二段階になる。ところが全く同一
の金型を製作することは技術的に困難であり平行
度、直角度の精度が出しにくく、同軸精度１／10
〜1.5／10mmが限度で中間スラグ製品として精度
の悪いばかりが作業工程が多く不利は免れない。 In addition to this example, it is also possible to form a barrel-shaped intermediate slag, then form a secondary intermediate slag with finished outer circumferential and parallel surfaces, and then separately punch holes using a press machine. The mold for holding it has two stages. However, it is technically difficult to produce exactly the same mold, and it is difficult to achieve parallelism and perpendicularity accuracy, and the coaxial accuracy is 1/10.
~1.5/10mm is the limit, and as an intermediate slag product, the precision is poor, and there are many work steps, so there are disadvantages.
一方本発明の実施例によれば、別途形成された
中間スラグ２を中空金型１０で加圧し、外周面、
平行面を確保した後、同一中空金型１０内で穴抜
き加工するようにしたものであるから金型の精度
がそのまま製品に現われ５／100mm以下の同軸精
度で高精度スラグ製品が提供できる。 On the other hand, according to the embodiment of the present invention, a separately formed intermediate slag 2 is pressurized with a hollow mold 10, and the outer peripheral surface is
After securing parallel surfaces, holes are punched in the same hollow mold 10, so the precision of the mold is directly reflected in the product, and high-precision slag products can be provided with a coaxial precision of 5/100 mm or less.
第９図は本発明の他の実施例を示すスラグ製品
で断面凹字状の中空スラグ３１となつている。こ
の場合インナーパンチ１７は穴なしで、インナー
パンチ２３の頭部を押込み形に変え、スラグの中
程まで押込み内周面及び底面３１ｄを仕上げる。
この場合も前実施例同様平行度、直角度が精度良
く出、高精度スラグ製品となる。 FIG. 9 shows a slag product according to another embodiment of the present invention, which is a hollow slag 31 with a concave cross section. In this case, the inner punch 17 does not have a hole, and the head of the inner punch 23 is changed to a push-in type, and the slag is pushed in halfway to finish the inner circumferential surface and bottom surface 31d.
In this case as well, as in the previous embodiment, the parallelism and perpendicularity are obtained with good accuracy, resulting in a high-precision slag product.
第１０図は円柱中空スラグを製造する場合の中
間スラグで、第１１図に完成スラグ製品を示す。
この場合は軸長の樽状中間スラグ３５を中空金型
１０に配置し、外周面４０ｂ及び上下端面４０
ａ，４０ｃをカウンターパンチ１７とアウターパ
ンチ２より加工した後、前記同一型内にて前記実
施例同様スラグの周囲を拘束してインナーパンチ
２３により打抜き加工したものである。 FIG. 10 shows an intermediate slag in the production of cylindrical hollow slag, and FIG. 11 shows a finished slag product.
In this case, a barrel-shaped intermediate slug 35 with an axial length is placed in the hollow mold 10, and the outer circumferential surface 40b and the upper and lower end surfaces 40
a, 40c are processed using the counter punch 17 and the outer punch 2, and then punched using the inner punch 23 in the same die while restraining the periphery of the slag as in the previous embodiment.
以上本発明の製造方法によれば、冷間成形によ
り高精度中空スラグ製品及び高精度スラグ製品を
１工程で容易確実に製造できる方法を提供でき
る。
As described above, according to the manufacturing method of the present invention, it is possible to provide a method for easily and reliably manufacturing high-precision hollow slag products and high-precision slag products in one step by cold forming.
第１図は先行技術における高精度二次中間スラ
グの部分断面側面図、第２図は従来のスラグの冷
間成形工程を例示する要部断面図、第３図は従来
方法によつて得られ二次中間スラグの部分断面側
面図、第４図は円柱状金属素材の斜視図、第５図
は中間スラグの斜視図、第６図、第７図は本発明
による製造スラグの冷間工程を例示する装置の要
部断面図、第８図は本発明によつて得られたスラ
グ製品の一部断面斜視図、第９図は他の実施例で
得られたスラグ製品の一部断面斜視図、第１０図
は更に他の実施例における中間スラグの斜視図、
第１１図は第１０図の中間スラグを用いて成形さ
れたスラグ製品の斜視図である。
２……中間スラグ、１……二次中間スラグ、１
０……中空金型、１７……カウンターパンチ、２
２……アウターパンチ。
Fig. 1 is a partial cross-sectional side view of a high-precision secondary intermediate slag in the prior art, Fig. 2 is a cross-sectional view of main parts illustrating the conventional slag cold forming process, and Fig. 3 is a partial cross-sectional side view of a high-precision secondary intermediate slag obtained by the conventional method. FIG. 4 is a perspective view of the cylindrical metal material, FIG. 5 is a perspective view of the intermediate slag, and FIGS. 6 and 7 show the cold process of the slag produced according to the present invention. FIG. 8 is a partial cross-sectional perspective view of a slag product obtained by the present invention, and FIG. 9 is a partial cross-sectional perspective view of a slag product obtained by another example. , FIG. 10 is a perspective view of an intermediate slug in yet another embodiment,
FIG. 11 is a perspective view of a slag product formed using the intermediate slag of FIG. 10. 2...Intermediate slag, 1...Secondary intermediate slag, 1
0...Hollow mold, 17...Counter punch, 2
2...Outer punch.
Claims (1)
中間スラグを成形した後、該スラグを製品の外径
にほぼ等しい内径を有する中空金型と、該金型の
下方に滑合し、スラグを載置するカウンターパン
チと、前記中空金型の上方に配置され、前記金型
に滑合するアウターパンチに摺動自在に配置され
たインナーパンチとを備えた加工パンチとにより
包囲し、前記アウターパンチにより中間スラグの
外周をしごくと共に上下端を圧縮し二次中間スラ
グを成形し、その後、該スラグを前記インナーパ
ンチにより前記金型内にて押圧成形することを特
徴とした冷間成形高精度中空スラグの製造方法。1. After forming a barrel-shaped intermediate slag by pressurizing a cylindrical metal material from the upper and lower ends, the slag is slid into a hollow mold having an inner diameter approximately equal to the outer diameter of the product, and below the mold, The slag is surrounded by a processing punch including a counter punch on which the slag is placed, and an inner punch that is arranged above the hollow mold and is slidably arranged on an outer punch that is slidably fitted to the hollow mold. A cold forming height characterized in that a secondary intermediate slag is formed by squeezing the outer periphery of the intermediate slag and compressing the upper and lower ends with an outer punch, and then press-forming the slag in the mold with the inner punch. Precision hollow slug manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17461982A JPS5964133A (en) | 1982-10-06 | 1982-10-06 | Manufacture of cold formed high precision slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17461982A JPS5964133A (en) | 1982-10-06 | 1982-10-06 | Manufacture of cold formed high precision slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5964133A JPS5964133A (en) | 1984-04-12 |
| JPS6230060B2 true JPS6230060B2 (en) | 1987-06-30 |
Family
ID=15981752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17461982A Granted JPS5964133A (en) | 1982-10-06 | 1982-10-06 | Manufacture of cold formed high precision slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5964133A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH055492U (en) * | 1991-02-07 | 1993-01-26 | マーテイン ジヨージ フランキー | Photo organizer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6134894A (en) * | 1984-07-27 | 1986-02-19 | 東芝ライテック株式会社 | Device for firing discharge lamp |
-
1982
- 1982-10-06 JP JP17461982A patent/JPS5964133A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6134894A (en) * | 1984-07-27 | 1986-02-19 | 東芝ライテック株式会社 | Device for firing discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5964133A (en) | 1984-04-12 |
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