JPS5812090B2 - Method for manufacturing anchor sleeves - Google Patents

Method for manufacturing anchor sleeves

Info

Publication number
JPS5812090B2
JPS5812090B2 JP55074708A JP7470880A JPS5812090B2 JP S5812090 B2 JPS5812090 B2 JP S5812090B2 JP 55074708 A JP55074708 A JP 55074708A JP 7470880 A JP7470880 A JP 7470880A JP S5812090 B2 JPS5812090 B2 JP S5812090B2
Authority
JP
Japan
Prior art keywords
hole
section
inner hole
punch
sleeve
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
Application number
JP55074708A
Other languages
Japanese (ja)
Other versions
JPS571537A (en
Inventor
真島光英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP55074708A priority Critical patent/JPS5812090B2/en
Publication of JPS571537A publication Critical patent/JPS571537A/en
Publication of JPS5812090B2 publication Critical patent/JPS5812090B2/en
Expired legal-status Critical Current

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Description

【発明の詳細な説明】 この発明は、コンクリート面などへ挿入固着すべきアン
カーのスリーブ、特に筒状なる拡開部の内孔が断面多角
形であるようなスリーブに関する製造方法に係り、当該
スリーブの能率的な製造を可能ならしめんとするもので
ある。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing an anchor sleeve to be inserted into and fixed to a concrete surface, particularly a sleeve whose inner hole of a cylindrical expanded portion has a polygonal cross section. The aim is to enable efficient production of.

ところで、コンクリート構造物や岩盤などの表面へ他の
部材を取り付けようとする場合に使用されるアンカーは
、予めそのコンクリート面などに穿設した孔へ挿入され
るスリーブと、該スリーブの一端に設けた拡開部へ圧入
されるテーパ付きプラグとで構成され、その拡開部を上
記の穿設孔内でプラグの圧入により拡開させて該孔の内
周面へ圧接させることにより、上記スリーブの該孔への
固着を実現させるようになっている。
By the way, anchors used when attaching other members to the surface of concrete structures, rock, etc. consist of a sleeve that is inserted into a hole drilled in advance in the concrete surface, and a sleeve that is attached to one end of the sleeve. and a tapered plug that is press-fitted into a widened part, and the widened part is expanded by press-fitting the plug into the above-mentioned drilled hole, and the sleeve is pressed against the inner peripheral surface of the hole. It is designed to realize fixation of the material into the hole.

従って、かかるスリーブの拡開部は、プラグによる拡開
を容易ならしめるため、数条の割り溝で縦割りにした形
状とされているのが通例である。
Therefore, the expansion portion of such a sleeve is usually vertically divided by several grooves in order to facilitate expansion by the plug.

またこのスリーブの拡開部は、断面円形の内孔を有する
ものよりも、断面多角形の内孔を有して該孔の各隅で縦
割すされている方が、上記のプラグでより一層拡開され
易い。
In addition, the expansion part of this sleeve is better in the above-mentioned plug if it has an inner hole with a polygonal cross-section and is vertically divided at each corner than if it has an inner hole with a circular cross-section. It is more likely to be expanded.

然してこのようなアンカーのスリーブは、従来に於ては
切削加工によって製造されている。
However, the sleeve of such an anchor has conventionally been manufactured by cutting.

このため、その製造に際しては、材料の無駄が多くて然
も加工所要時間が犬であり、従ってコスト高となるを免
れ得ない傾向がみられる。
For this reason, when manufacturing them, there is a tendency that a lot of material is wasted, and the time required for processing is long, resulting in an unavoidable increase in costs.

例えばこのスリーブは、全体が筒状であるが、これの内
孔を棒材への切削加工によって成形していたのでは、材
料の無駄が多く且つまた時間もかかる。
For example, this sleeve has a cylindrical shape as a whole, but if the inner hole of the sleeve were formed by cutting a bar material, a lot of material would be wasted and it would be time consuming.

そこで、その内孔に相当した内径をもつパイプ材を使用
すれば、切削加工の手数は省けるが、しかしスリーブの
肉厚は比較的に犬であるため、これに適したパイプ材を
入手し難く、例え入手し得ても高価であるため、切削加
工による場合と比べてコスト的に有利とはならない。
Therefore, if a pipe material with an inner diameter corresponding to the inner hole is used, the labor of cutting can be saved, but since the wall thickness of the sleeve is relatively small, it is difficult to obtain pipe material suitable for this purpose. Even if it can be obtained, it is expensive, so it is not cost-effective compared to cutting.

また上記したようなパイプ材の使用は、スリーブの拡開
部における内孔が断面円形である場合には、それなりに
有益であるが、その内孔が断面多角形である場合には、
該孔に関する限り何らの利益もない。
Furthermore, the use of pipe material as described above is somewhat beneficial when the inner hole in the expanded portion of the sleeve has a circular cross section, but when the inner hole has a polygonal cross section,
There is no benefit as far as the holes are concerned.

然も拡開部の内孔が上記の如く断面多角形である場合に
は、これを切削加工で成形するについても、多くの困難
を伴なう。
However, when the inner hole of the expanded portion has a polygonal cross section as described above, many difficulties arise in shaping it by cutting.

更にまた、拡開部の割り溝については、上記したような
パイプ材が使用されると否とに拘らず、これの成形を切
削加工、例えば切断砥石を用いた切断によらねばならな
いため、コスト的に不利である。
Furthermore, regardless of whether or not the above-mentioned pipe material is used, the grooves of the expanded portion must be formed by cutting, for example, by cutting using a cutting wheel, which increases the cost. This is disadvantageous.

本発明は、アンカーのスリーブに関する上記したような
考察にもとづいて、かかるスリーブ、特に筒状なる拡開
部の内孔が断面多角形であるようなスリーブの能率的な
製造を可能ならしめるため、拡開部の割り溝をも含めた
全体の形状を、すべて圧造加工により成形するようにし
たものである。
The present invention is based on the above-mentioned considerations regarding anchor sleeves, and in order to make it possible to efficiently manufacture such sleeves, especially sleeves in which the inner hole of the cylindrical expanded portion has a polygonal cross-section, The entire shape, including the grooves in the expanded portion, is formed by forging.

然して圧造加工を採用する場合に最も問題となるのは、
割り溝の成形である。
However, the biggest problem when adopting heading processing is
This is the molding of the split groove.

即ちスリーブの拡開部を筒状に成形してから割り溝を入
れる方法では、その溝を成形する金型が素材内部へ都合
よく圧入され得す、従って核部の圧造成形が事実上不可
能となる。
In other words, in the method of forming the expanded part of the sleeve into a cylindrical shape and then inserting the split grooves, the mold for forming the grooves can be conveniently press-fitted into the material, and therefore it is virtually impossible to press-form the core part. becomes.

そこで本発明に於ては、上記したような問題点にも充分
対処して、この割り溝をも拡開部と同時に且つ容易に圧
造成形し得るよう考慮されている。
Therefore, in the present invention, the above-mentioned problems are sufficiently addressed, and consideration has been given to making it possible to easily press-form the split grooves at the same time as the expanded portions.

以下これを図面に示す実施例について詳述する。Hereinafter, an embodiment shown in the drawings will be described in detail.

第1図1〜■は、本発明方法の実施例を工程順に表わし
たものである。
FIGS. 1-1 show an embodiment of the method of the present invention in the order of steps.

即ち図Iに於て、1は適当な棒材を所要長さに切断して
得られた素材である。
That is, in Figure I, 1 is a material obtained by cutting a suitable bar material to a required length.

この素材1は、まず据込み加工によって、図■に示す如
く両端面1a、1bが矯正される。
This material 1 is first subjected to an upsetting process to straighten both end surfaces 1a and 1b as shown in FIG.

次いでこの素材1は、両端面1a、1bへ同時に施され
る複合押出し加工によって、図■に示す如く成形される
Next, this material 1 is molded as shown in FIG.

即ち端面1a側には、内孔2を有する筒状の拡開部3が
、該部分を複数の拡開部片3aに縦割すするような複数
の割り溝4と共に成形され、端面1b側には、別の内孔
5が成形される。
That is, on the end face 1a side, a cylindrical widened part 3 having an inner hole 2 is formed together with a plurality of grooves 4 that vertically divide the part into a plurality of widened part pieces 3a, and on the end face 1b side Another internal bore 5 is formed in the .

然してこのような図■に示す工程は、本発明に係る製造
方法の最も重要な部分であり、これについては後に改め
て詳述する。
However, the step shown in FIG.

上記した加工によって生成品となった素材1に対しては
、続いて図■に示す如く、拡開部3の内孔2を内方へ延
長するような内孔6が成形され、これによって残された
内孔5,6間の薄い余肉部1は、更に図Vに示す如く打
ち抜かれて、上記の各内孔5,6間を連通させるような
内孔8が生じる。
Next, as shown in Figure 3, an inner hole 6 is formed in the material 1 that has become a product through the above-described processing, and the inner hole 6 extends inwardly from the inner hole 2 of the expanded portion 3. The thin excess wall portion 1 between the inner holes 5 and 6 thus formed is further punched out as shown in FIG.

よって、上記した一連の圧造加工及び最終工程での打抜
き加工により、当初の棒状素材1は全体が筒状をなすス
リーブとなり、その拡開部3は、複数の割・り溝4によ
って、複数の拡開部片3aに縦割すされている。
Therefore, through the above-described series of forging processes and the punching process in the final process, the original bar-shaped material 1 becomes a sleeve having a cylindrical shape as a whole, and the expanded part 3 has a plurality of grooves formed by the plurality of split grooves 4. It is vertically divided into the expansion piece 3a.

然してこの実施例における拡開部3の内孔2は、第2図
に示す如く、その断面形状が多角形(図例では4角形)
とされ、且つこの内孔の各隅にある割り溝4でその拡開
部3が縦割すされているが、このような形状の内孔2は
、上記したような圧造加工にもとづくとき、初めて容易
に成形され得るのである。
However, as shown in FIG. 2, the inner hole 2 of the expanded portion 3 in this embodiment has a polygonal cross-sectional shape (quadrilateral in the illustrated example).
The widening portion 3 of the inner hole is vertically divided by grooves 4 at each corner of the inner hole. For the first time, it can be easily molded.

なおこの圧造加工によって、第3図に示すような断面形
状が円形である内孔2′を成形することも、勿論容易で
ある。
By this forging process, it is of course easy to form an inner hole 2' having a circular cross-sectional shape as shown in FIG.

ところで、前記した第1図■に示す工程での複合押出し
加工は、具体的には第4図に例示するような圧造装置を
用いて行なわれる。
By the way, the composite extrusion process in the step shown in FIG.

即ちこの装置の圧造ダイ11には、両端面1a、1bが
矯正された素材1の該両端面を除いた外周面を拘束し得
るような断面円形の成形孔12が設けられている。
That is, the forging die 11 of this device is provided with a forming hole 12 having a circular cross section so as to be able to restrain the outer circumferential surface of the material 1 whose both end surfaces 1a and 1b have been straightened, excluding the both end surfaces.

この成形孔12の内奥には、核部よりも径小なる固定パ
ンチ13が組み適才れており、また成形孔12の内周面
と固定パンチ13との間には、それら両者に沿って前進
させられる筒状のストリッパー14が、上記パンチ13
の先端よりは後退した位置で待機させられている。
A fixed punch 13 having a smaller diameter than the core is fitted deep inside the forming hole 12, and there is a gap between the inner peripheral surface of the forming hole 12 and the fixed punch 13 along both of them. A cylindrical stripper 14 that is moved forward is attached to the punch 13.
It is placed on standby in a position that is set back from the tip.

一方、この圧造ダイ11に対応する圧造パンチ15の先
端部分は、前記成形孔12の内径よりも細い軸部16と
、核部の外周面へ等間隔に突設された複数の軸方向に沿
った突条部1γとからなり、成形孔12の内周面に対し
ては、それら各突条部17の先縁で内接するようになっ
ている。
On the other hand, the tip of the forging punch 15 that corresponds to the forging die 11 has a shaft portion 16 that is thinner than the inner diameter of the forming hole 12 and a plurality of axial portions protruding from the outer peripheral surface of the core portion at equal intervals. The protrusions 17 are formed of protrusions 1γ, and the leading edges of the protrusions 17 are inscribed in the inner circumferential surface of the molding hole 12.

またこの圧造パンチ先端部分における軸部16は、前記
したスリーブの拡開部3における内孔2の第2図に示す
ような多角形なる断面形状に合わせて、同じく第5図に
示すような断面多角形(図例では4角形)とされ、複数
の各突条部17は、当該多角形軸部の各校に沿って突設
されている。
In addition, the shaft portion 16 at the tip of the forging punch has a cross section as shown in FIG. 5 in accordance with the polygonal cross-sectional shape as shown in FIG. It has a polygonal shape (quadrilateral in the illustrated example), and each of the plurality of protrusions 17 is provided in a protruding manner along each side of the polygonal shaft.

な、お、拡開部3が第3図に示す如く断面円形の内孔2
′を有するものとされる場合には、軸部16も断面円形
とされること勿論である。
Incidentally, the expanded portion 3 is an inner hole 2 with a circular cross section as shown in FIG.
', it goes without saying that the shaft portion 16 also has a circular cross section.

かかる圧造装置に於て、まず両端面が矯正された素材1
を圧造ダイ11の成形孔12へ挿入し、次いで該孔内へ
圧造パンチ15の先端部分を打ち込む。
In such a heading device, first, a material 1 with both end faces straightened.
is inserted into the forming hole 12 of the forging die 11, and then the tip of the forging punch 15 is driven into the hole.

すると素材1は、固定パンチ13の先端面と圧造パンチ
15の先端面とで挾まれる状態のもとに於て、軸方向へ
強く加圧される。
Then, the material 1 is strongly pressed in the axial direction while being held between the front end surface of the fixed punch 13 and the front end surface of the forging punch 15.

このため、素材1の固定パンチ13に近い部分は、塑性
変形により前方へ押し出されて、該パンチと成形孔12
の内周面との間へ筒状に進入し、その結果、固定パンチ
13によって内孔5が成形されることになる。
Therefore, the part of the material 1 near the fixed punch 13 is pushed forward due to plastic deformation, and the punch and the forming hole 13 are pushed forward.
As a result, the inner hole 5 is formed by the fixed punch 13.

同時にまた、素材1の圧造パンチ15に近い部分は、塑
性変形により後方へ、即ち成形孔12の入口に向かう方
向へ押し出されて、核部の内周面と圧造パンチ先端部分
の軸部16との間へ進入する。
At the same time, the part of the material 1 near the forging punch 15 is pushed out backwards, that is, in the direction toward the entrance of the forming hole 12, due to plastic deformation, and the inner peripheral surface of the core and the shaft part 16 at the tip of the forging punch are pushed out due to plastic deformation. Enter the space between.

然してこの軸部16は、成形孔12へ内接する複数の突
条部17依面多角形なる該軸部の各校に沿って有し、従
って軸部外周面と成形孔内周面との間の筒状なるべき空
間は、上記の各突条部17によって、複数に区画されて
いる。
However, this shaft portion 16 has a plurality of protrusions 17 inscribed in the molding hole 12 along each part of the shaft portion which is a dependent polygon, and therefore there is a gap between the outer peripheral surface of the shaft portion and the inner peripheral surface of the molding hole. The cylindrical space is divided into a plurality of sections by each of the above-mentioned protrusions 17.

このため、素材1の塑性変形によって後方へ押し出され
る部分は、各突条部17を避けて、それらの突条部で区
画された各空間内へ分かれて進入し、その結果、軸部1
6により断面多角形の内孔2が、各突条部17により割
り溝4が夫々成形されて、その内孔の各隅部で複数の拡
開部片3aに縦割りされたような形態の拡開部3となる
Therefore, the portion of the material 1 that is pushed out rearward due to plastic deformation avoids each of the protrusions 17 and separates into each space defined by those protrusions, and as a result, the shaft part 1
An inner hole 2 having a polygonal cross section is formed by 6, a dividing groove 4 is formed by each protrusion 17, and each corner of the inner hole is vertically divided into a plurality of expanding pieces 3a. This becomes the expanded part 3.

然も、このような後方押出し加工によれば、筒状の素材
を圧造パンチの突条部17で縦割すする場合に比べて、
素材の塑性変形に無理がないため、割り溝4の成形が遥
かに容易であり、従って圧造パンチ15にかかる負担が
小さいため、所要加工圧力が少なく且つ加工所要時間も
短くなる。
However, according to such backward extrusion processing, compared to the case where a cylindrical material is vertically divided by the protrusion 17 of a heading punch,
Since the plastic deformation of the material is not unreasonable, forming the split grooves 4 is much easier, and therefore the load on the forging punch 15 is small, so the required processing pressure and processing time are shortened.

以上の如く、本発明は拡開部が複数の割り溝で縦割すさ
れたような形態を呈するアンカーのスリーブを圧造加工
により成形し、特に割り溝で縦割すされている拡開部に
ついても、後方押出しによる圧造加工を適用して無理な
く成形し得るようにしたものである。
As described above, the present invention uses a forging process to form an anchor sleeve in which the expanded portion is vertically divided by a plurality of grooves, and particularly regarding the expanded portion in which the expanded portion is vertically divided by the grooves. Also, by applying a heading process using backward extrusion, it can be formed easily.

従ってこのような本発明に係る製造方法に+れば、従来
の切削加工による場合と比べ、加工所要時間を大巾に短
縮させ得て、上記スリーブの能率的な製造を可能ならし
めることができ、然も材料の無駄がきわめて少なく且つ
安価な棒材を利用できることと相俟って、大巾なコスト
の引下げを実現できる。
Therefore, by using the manufacturing method according to the present invention, the required processing time can be greatly shortened compared to the conventional cutting process, and the sleeve can be efficiently manufactured. However, this combined with the fact that there is very little wastage of materials and the use of inexpensive rods makes it possible to achieve a significant cost reduction.

特にこの製造方法によれば、従来の切削加工では成形が
困難であるような形態のスリーブ、即ち拡開部の内孔が
断面多角形であって該内孔の各隅でその拡開部が縦割す
されているようなスリーブを、容易に成形することがで
きる。
In particular, according to this manufacturing method, the sleeve has a shape that is difficult to form using conventional cutting processing, that is, the inner hole of the expanded portion has a polygonal cross section, and the expanded portion is formed at each corner of the inner hole. Sleeves that are vertically split can be easily molded.

【図面の簡単な説明】[Brief explanation of drawings]

第1図1〜■は本発明の実施例を工程順に示す正面図及
び欠截正面図、第2図は第1図VのA−A線よりみた断
面図、第3図は本発明を応用した他の製品例の断面図、
第4図は本発明の実施に採用される圧造装置の一例を示
した加工状態の一部欠截正面図、第5図は第4図のB−
B線よりみた断面図である。 1・・・・・・素材、3・・・・・・拡開部、4・・・
・・・割り溝、11・・・・・・圧造ダイ、12・・・
・・・成形孔、15・・・・・・圧造パンチ、16・・
・・・・軸部、17・・・・・・突条部。
Figures 1 to 1 are front views and cutaway front views showing embodiments of the present invention in the order of steps, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is an application of the present invention. Cross-sectional view of other product examples,
FIG. 4 is a partially cutaway front view showing an example of a heading device employed in carrying out the present invention in a processed state, and FIG.
It is a sectional view seen from line B. 1... Material, 3... Expansion part, 4...
...Split groove, 11... Heading die, 12...
...Forming hole, 15... Forging punch, 16...
...Shaft portion, 17...Protrusion portion.

Claims (1)

【特許請求の範囲】[Claims] 1 圧造ダイの断面円形なる成形孔の内径よりも細くし
た断面多角形なる軸部の外周面に、該軸の各校に沿って
上記成形孔へ内接させ得るような複数の突条部が軸方向
に突設されている圧造パンチを用い、所要長さに切断し
て上記成形孔へ挿入された棒状素材を上記の圧造パンチ
で軸方向に加圧して、その素材の該パンチに近い部分を
、上記の各突条部を避けながら後方へ押し出させること
により、アンカー用スリーブの断面多角形なる内孔をも
った拡開部が成形され、同時にこの拡開部を上記内孔の
各隅で縦割りにするような複数の割り溝が成形されるよ
うにしたことを特徴とするアンカー用スリーブの製造方
法。
1. A plurality of protrusions are provided on the outer circumferential surface of the shaft portion of the forging die, which has a polygonal cross section that is thinner than the inner diameter of the forming hole that has a circular cross section, so as to be inscribed in the forming hole along each axis of the shaft. Using a forging punch protruding in the axial direction, a rod-shaped material cut to a required length and inserted into the forming hole is pressurized in the axial direction by the forging punch, thereby forming a portion of the material near the punch. is pushed out backward while avoiding each of the above-mentioned protrusions, an enlarged part of the anchor sleeve having an inner hole with a polygonal cross section is formed, and at the same time, this enlarged part is pushed out at each corner of the inner hole. A method for manufacturing an anchor sleeve, characterized in that a plurality of grooves are formed to vertically divide the anchor sleeve.
JP55074708A 1980-06-02 1980-06-02 Method for manufacturing anchor sleeves Expired JPS5812090B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55074708A JPS5812090B2 (en) 1980-06-02 1980-06-02 Method for manufacturing anchor sleeves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55074708A JPS5812090B2 (en) 1980-06-02 1980-06-02 Method for manufacturing anchor sleeves

Publications (2)

Publication Number Publication Date
JPS571537A JPS571537A (en) 1982-01-06
JPS5812090B2 true JPS5812090B2 (en) 1983-03-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP55074708A Expired JPS5812090B2 (en) 1980-06-02 1980-06-02 Method for manufacturing anchor sleeves

Country Status (1)

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JP (1) JPS5812090B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201414934A (en) * 2012-10-03 2014-04-16 Extend Forming Ind Corp Manufacturing method of damping spindle sleeve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5430669A (en) * 1977-08-12 1979-03-07 Hitachi Ltd Washing machine with freeze proofing heater

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5430669A (en) * 1977-08-12 1979-03-07 Hitachi Ltd Washing machine with freeze proofing heater

Also Published As

Publication number Publication date
JPS571537A (en) 1982-01-06

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