JPS62267040A - Working method for external screw - Google Patents
Working method for external screwInfo
- Publication number
- JPS62267040A JPS62267040A JP11013086A JP11013086A JPS62267040A JP S62267040 A JPS62267040 A JP S62267040A JP 11013086 A JP11013086 A JP 11013086A JP 11013086 A JP11013086 A JP 11013086A JP S62267040 A JPS62267040 A JP S62267040A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- zinc
- rolling
- thread
- iron
- 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
- 238000000034 method Methods 0.000 title claims description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052742 iron Inorganic materials 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 238000005482 strain hardening Methods 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 30
- 229910052725 zinc Inorganic materials 0.000 abstract description 30
- 239000011701 zinc Substances 0.000 abstract description 30
- 238000007747 plating Methods 0.000 abstract description 15
- 238000005260 corrosion Methods 0.000 abstract description 9
- 239000000956 alloy Substances 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 2
- 230000006866 deterioration Effects 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Coating With Molten Metal (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は表面に亜鉛鍍金をして防食性をそなえた雄ネジ
をあらゆる大きさのものにわたって簡易かつ精度を良好
にして加工しうる方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for easily and accurately processing male screws of all sizes whose surfaces are galvanized to provide anti-corrosion properties. .
表面に亜鉛鍍金をした鉄製のネジは防食性が良好である
ことから近年多用される傾向にある。Iron screws whose surfaces are plated with zinc have been increasingly used in recent years because of their good anti-corrosion properties.
従来この表面に亜鉛鍍金をした鉄製ネジ例えば雄ネジに
加工するには、頭部並びに軸部を形成したまたは頭部を
形成しない軸部のみの鉄製雄ネジ基材にダイス方式など
でネジ目を刻設して、溶融した亜鉛をいれた槽内に浸潤
する等して表面に亜゛鉛居を形成したのち、この溶融亜
鉛が固化しないうちに円心分離機にかける等して余分な
溶融亜鉛を振り切り薄膜の亜鉛鍍金層を鉄表面に形成し
てなる方法がきわめて一最的である。Conventionally, in order to process an iron screw with a zinc-plated surface into a male screw, for example, a male thread is formed using a die method or the like on a male iron screw base material with a head and a shank formed, or only the shank without a head. After forming a zinc deposit on the surface by infiltrating into a tank containing molten zinc, the excess molten zinc is removed by passing it through a centrifugal separator before it solidifies. The most optimal method is to shake off the zinc and form a thin zinc plating layer on the iron surface.
また鉄表面の溶融亜鉛が固化しないうちに圧縮空気を噴
きつけて余分な溶融亜鉛を振り切り薄膜の亜鉛鍍金層を
鉄表面に形成ずろ方法、ダイス方式でネジ目を刻設する
ときにあらかじめ規格寸法より小さめに加工しておき、
鉄表面に亜鉛鍍金層を形成したのち再度ダイス加工して
規格寸法に仕１＝−げろ方法、更にはネジ部を包装して
亜鉛鍍金層を鉄表面に形成する方法などがある。In addition, before the molten zinc on the iron surface solidifies, compressed air is sprayed to shake off the excess molten zinc and form a thin galvanized layer on the iron surface.When carving threads using the zigzag method or die method, pre-standard dimensions are used. Process it into a smaller size,
There is a method in which a zinc plating layer is formed on the iron surface and then die processing is performed again to obtain standard dimensions, and there is also a method in which the threaded portion is wrapped and a zinc plating layer is formed on the iron surface.
しかしながら円心分離機にかける方法では円心分離機の
能力の限度にともない雄ネジの重叩で２〜３ ｋｇ、長
さで５００ ｍｍ以内のものに限られ、これ以−ヒの大
きなものを加工するのは不可能であったり、圧縮空気を
噴きつける方法では表面形状の複雑なネジ部に均一に亜
鉛鍍金層を形成するのは至難であって加工したのち精度
が悪く雌ネジを螺合するのに支障が発生したり、ダイス
方式でネジ目を刻設するとき小さめに加工しておき表面
に亜鉛層を形成したのち再度ダイス加工して仕上げる方
法では内部の鉄地が露出して所望ｅ防食効果が期待でき
なかったり、ネジ部を包装して亜鉛鍍金をするのは面倒
でありかつ溶融亜鉛は略４５０℃であることから包装物
の素）才に制約を受けたりという問題点がそれぞれ存在
している。However, due to the limitations of the capacity of the centrifugal separator, the method of applying a centrifugal separator is limited to objects weighing 2 to 3 kg and within 500 mm in length by heavy tapping with a male screw; It is difficult to form a uniform zinc plating layer on threads with complex surface shapes using the method of blowing compressed air, and the accuracy is poor after processing, making it difficult to screw female threads together. If you use the die method to carve threads into smaller holes, form a zinc layer on the surface, and then re-dice to finish, the internal iron base will be exposed and the desired eThere are problems in that the anti-corrosion effect cannot be expected, and it is troublesome to package and galvanize threaded parts, and the temperature of molten zinc is approximately 450°C, so there are restrictions on the material quality of the package. Each exists.
本発明はこのような従来の問題点に鑑みて表面に亜鉛鍍
金をして防食性をそなえた雄ネジをあらゆる大きざのも
のにわたって簡易かつ精度を良好にして加工しうるよう
にすることを目的とする。In view of these conventional problems, it is an object of the present invention to make it possible to easily and accurately process male screws of all sizes whose surfaces are galvanized to provide anti-corrosion properties. shall be.
かかる目的を達成するため本発明は以下の内容を要旨と
する。In order to achieve this object, the present invention has the following contents.
即ち、本発明は間隔をあけて並設した転造ダイス間に、
表面に亜鉛鍍金をした鉄製雄ネジ基材の軸部を位置づけ
して冷間加工により該軸部にネジ目を刻設してなる雄ネ
ジの加工方法にある。That is, in the present invention, between the rolling dies arranged in parallel at intervals,
This method of processing a male screw comprises positioning the shaft of an iron male screw base material whose surface is galvanized and carving threads on the shaft by cold working.
しかして前記本発明によれば鉄製雄ネジ基材に亜鉛鍍金
をしたのち、軸部にネジ目を転造法により刻設してなる
から、加工は簡易であって、かつ精度の良好な雄ネジか
えられる。However, according to the present invention, after galvanizing the iron male screw base material, the screw threads are carved into the shaft portion by a rolling method, so that the machining is simple and the male screw with good accuracy is formed. The screws can be replaced.
以下本発明の雄ネジの加工方法を添付の図面にもとづき
更に詳細に説明する。Hereinafter, the male thread processing method of the present invention will be explained in more detail based on the accompanying drawings.
まず所望長さとした鉄製円筒体から図中１として示す所
望形状の頭部２と、ネジ目を刻設すべく軸部３とを形成
した鉄製雄ネジ基材を加工する。First, a male threaded iron base material is machined from an iron cylindrical body having a desired length, on which a head 2 of a desired shape shown as 1 in the figure and a shaft portion 3 for carving threads are formed.
この鉄製雄ネジ基材１全体を、溶融鍍金法にのっとり略
４５０℃の溶融した亜鉛をいれた槽中に投入して表面に
厚み５〜７μ程度の亜鉛ｉ爪金層４を形成せしめる。The entire male threaded iron base material 1 is placed into a tank containing molten zinc at about 450 DEG C. according to the hot-dip plating method, and a zinc i-claw metal layer 4 having a thickness of about 5 to 7 microns is formed on the surface.
図中５はこの亜鉛鍍金層４形成過程において鉄と亜鉛と
の境界に発生する合金層である。5 in the figure is an alloy layer generated at the boundary between iron and zinc during the process of forming the zinc plating layer 4.
このように表面に亜鉛鍍金層４を形成した鉄製雄ネジ基
材１の軸部３を、該軸部３にネジ目を刻設しうる間隔を
あけて並設しそれぞれ適宜な駆動源に関係づけた転造ダ
イス６．６間に位置づけした状態で冷間加工により第２
図中において矢印で示したように転造ダイス６．６を回
転させて、ネジ目を刻設してなるものである。尚、図中
７はささえ板である。The shaft portions 3 of the male threaded iron base material 1 having the zinc plating layer 4 formed on the surface thereof are arranged side by side at intervals that allow the threads to be carved on the shaft portions 3, and each is connected to an appropriate drive source. The second rolling die is placed between 6 and 6 by cold working.
The threads are formed by rotating the rolling die 6.6 as shown by the arrow in the figure. In addition, 7 in the figure is a support plate.
こうして加工された雄ネジは第３図に示すように鉄製／
ｆｆネジ基材１に前記合金層５を介して略均−厚さに亜
鉛鍍金層４を押しつけたようにして形成されており、外
観は黒っぽく亜鉛鍍金層４が剥離したような感を呈して
いるが、表面には略均−厚さの亜鉛ｉ爪金層４があるこ
とから防食性については従来のものと比較して遜色はな
かった。The male screw processed in this way is made of iron/
It is formed by pressing the zinc plating layer 4 to a substantially uniform thickness onto the ff screw base material 1 via the alloy layer 5, and the appearance is blackish and gives the impression that the zinc plating layer 4 has peeled off. However, since there was a zinc i-metal layer 4 of approximately uniform thickness on the surface, the corrosion resistance was comparable to that of the conventional one.
上記のようにこの加工方法によれば外観上黒っぽくなる
ごとから、商品価値を高めるべく亜鉛鍍金層４表面に銀
粉塗装をすることも一法である。As mentioned above, this processing method results in a blackish appearance, so one method is to coat the surface of the zinc plating layer 4 with silver powder in order to increase its commercial value.
ここで頭部２を形成しない軸部３のみの鉄製雄ネジ基材
ｌについても同様にして表面に亜鉛鍍金層４を形成した
頭部なしの雄ネジに加工することができる。Here, the iron male screw base material l having only the shaft portion 3 without the head 2 can be similarly processed into a headless male screw having the zinc plating layer 4 formed on the surface.
また図示した実施例のように雄ネジの加工のみならず転
造タップを用いれば雌ネジの加工についても本発明の雄
ネジの加工方法と同様になしうる。Further, if a rolling tap is used in addition to machining male threads as in the illustrated embodiment, machining of female threads can be performed in the same manner as the male thread machining method of the present invention.
〔発明の効果］
以上のような本発明の雄ネジの加工方法にあっては、間
隔をあけて並設した転造ダイス間に、表面に亜鉛鍍金を
した鉄製雄ネジ基材の軸部を位置づけして冷間加工によ
り該軸部にネジ目を刻設してなるから、鉄表面に亜鉛鍍
金をして防食性をそなえた雄ネジをあらゆる大きさのも
のにわたって簡易かつ精度を良好に加工しえて、後工程
におい°ζ」１（【ネジを螺合するのに支障か発生した
りすることもないのである。[Effects of the Invention] In the male screw processing method of the present invention as described above, the shaft portion of the iron male screw base material whose surface is galvanized is placed between the rolling dies arranged in parallel at intervals. Since the threads are carved into the shaft part by positioning and cold working, the male threads of all sizes can be machined easily and accurately with zinc plating on the iron surface to provide anti-corrosion properties. In addition, there is no problem in the subsequent process when screwing the screws together.
また転造法によるから削くずが発生せず強度の大きい製
品かえられるばかりでなく、生産効率もきわめてよいの
である。Furthermore, since the rolling method is used, not only is it possible to produce stronger products without generating chips, but production efficiency is also extremely high.
図面は本発明の雄ネジの加工方法を具体化すべ〈実施例
を示し、第１図は鉄製雄ネジ基材に亜鉛鍍金をした状態
を示す断面図、第２図は鉄５！雄ネジ貼十オに亜鉛鍍金
をしたのち軸部に転造ダイスによりネジ目を刻設する状
態を示す簡略説明図、第３図はネジ目を刻設したのちの
雄ネジの断面図である。
に鉄製雄ネジ基材、２：頭部、
３：軸部、 ４：亜鉛鍍金層、５：合金層、
６：転造ダイス、７：ささえ仮。
第 ３ 図
ｓ １ 図
手続補正書
昭和６１年８月１２日
特許庁長官 黒 １）明 雄 殿
特願昭６１−１１０１３０号
２、発明の名称
雄ネジの加工方法
３、？ｉｌｉ正をする者
事件との関係；特許出願人
近藤鉄工株式会社
４、代理人■５３３
大阪市東淀用区東中島１丁目２０番１４号東ロスチージ
ョンビル
５、補正命令の日付
７、補正の内容
明細書の第４頁第１４行目に「厚み５〜７μ程度の」と
あるを、「厚み５０〜７０μ程度の」と補正する。
以上The drawings show embodiments of the male screw processing method of the present invention. Fig. 1 is a sectional view showing a state in which an iron male screw base material is galvanized, and Fig. 2 is a cross-sectional view showing a state in which an iron male screw base material is plated with zinc. A simplified explanatory diagram showing a state in which a male thread is galvanized and then a thread is carved on the shaft using a rolling die. Figure 3 is a cross-sectional view of the male screw after the thread is carved. . 2: Head, 3: Shaft, 4: Zinc plating layer, 5: Alloy layer,
6: Rolled die, 7: Support temporary. Figure 3 s 1 Amendment to Figure Procedures August 12, 1986 Commissioner of the Patent Office Black 1) Yu Akihiro Patent Application No. 110130/1982 2 Title of Invention Method for Processing Male Threads 3? Relationship with the person who makes corrections; Patent applicant Kondo Tekko Co., Ltd. 4, Agent ■ 533 Higashi Rostion Building 5, 1-20-14 Higashinakajima, Higashiyodoyo-ku, Osaka City, Date of amendment order 7, Amendment In the 4th page, line 14 of the description of contents, the phrase "approximately 5 to 7 microns thick" is corrected to "approximately 50 to 70 microns thick."that's all
Claims (1)
鍍金をした鉄製雄ネジ基材の軸部を位置づけして冷間加
工により該軸部にネジ目を刻設してなる雄ネジの加工方
法。1) The shaft of a male threaded iron base material whose surface is galvanized is positioned between rolling dies arranged in parallel at intervals, and a thread is carved into the shaft by cold working. How to process screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11013086A JPS62267040A (en) | 1986-05-13 | 1986-05-13 | Working method for external screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11013086A JPS62267040A (en) | 1986-05-13 | 1986-05-13 | Working method for external screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62267040A true JPS62267040A (en) | 1987-11-19 |
Family
ID=14527785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11013086A Pending JPS62267040A (en) | 1986-05-13 | 1986-05-13 | Working method for external screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62267040A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945183A (en) * | 2016-05-11 | 2016-09-21 | 西安交通大学 | Phase-adjustable die structure for synchronously rolling threaded splines |
| US20160312814A1 (en) * | 2015-04-23 | 2016-10-27 | Illinois Tool Works Inc. | Pre-plated spline formed fastener and method for making same |
| US11414866B2 (en) | 2017-08-16 | 2022-08-16 | Pfeifer Holding Gmbh & Co. Kg | Tension member or compression member having corrosion-resistant thread flanks |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52139650A (en) * | 1976-05-17 | 1977-11-21 | Osaka Gas Co Ltd | Method of forming screw for tube or tube joint |
| JPS60139909A (en) * | 1983-12-27 | 1985-07-24 | 本田技研工業株式会社 | Washer incorporated bolt and manufacture thereof |
-
1986
- 1986-05-13 JP JP11013086A patent/JPS62267040A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52139650A (en) * | 1976-05-17 | 1977-11-21 | Osaka Gas Co Ltd | Method of forming screw for tube or tube joint |
| JPS60139909A (en) * | 1983-12-27 | 1985-07-24 | 本田技研工業株式会社 | Washer incorporated bolt and manufacture thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160312814A1 (en) * | 2015-04-23 | 2016-10-27 | Illinois Tool Works Inc. | Pre-plated spline formed fastener and method for making same |
| US10197082B2 (en) * | 2015-04-23 | 2019-02-05 | Illinois Tool Works Inc. | Pre-plated spline formed fastener and method for making same |
| US20190170176A1 (en) * | 2015-04-23 | 2019-06-06 | Illinois Tool Works Inc. | Pre-plated spline formed fastener and method for making same |
| CN105945183A (en) * | 2016-05-11 | 2016-09-21 | 西安交通大学 | Phase-adjustable die structure for synchronously rolling threaded splines |
| CN105945183B (en) * | 2016-05-11 | 2017-08-25 | 西安交通大学 | A kind of synchronous rolling phase-adjustable mould structure of screw thread spline |
| US11414866B2 (en) | 2017-08-16 | 2022-08-16 | Pfeifer Holding Gmbh & Co. Kg | Tension member or compression member having corrosion-resistant thread flanks |
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