JPH0722797B2 - Headless Set Screw Manufacturing Method - Google Patents
Headless Set Screw Manufacturing MethodInfo
- Publication number
- JPH0722797B2 JPH0722797B2 JP16596090A JP16596090A JPH0722797B2 JP H0722797 B2 JPH0722797 B2 JP H0722797B2 JP 16596090 A JP16596090 A JP 16596090A JP 16596090 A JP16596090 A JP 16596090A JP H0722797 B2 JPH0722797 B2 JP H0722797B2
- Authority
- JP
- Japan
- Prior art keywords
- shaped head
- collar
- blank
- set screw
- thread
- 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 - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 238000005096 rolling process Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 102000010029 Homer Scaffolding Proteins Human genes 0.000 description 1
- 108010077223 Homer Scaffolding Proteins Proteins 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
Landscapes
- Forging (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、頭なしのすりわり付き止めねじ及び六角穴付
き止めねじの製造方法に関する。Description: FIELD OF THE INVENTION The present invention relates to a method for manufacturing a headless slotted set screw and a hexagon socket set screw.
従来の技術 従来、すりわり付き止めねじは自動旋盤で切削加工によ
り製造していた。この方法は加工精度は高いけれども、
生産性が低く、しかも製造工程が複雑で熟練を要し、コ
スト高につくという問題点があった。また、製造設備も
高価であった。2. Description of the Related Art Conventionally, a slotted set screw has been manufactured by cutting with an automatic lathe. This method has high processing accuracy,
There is a problem in that the productivity is low, the manufacturing process is complicated, skill is required, and the cost is high. Also, the manufacturing equipment was expensive.
一方、六角穴付き止めねじの製造には、上述したすりわ
り付き止めねじと同じように自動旋盤による方法と、ヘ
ッダ又はナットホーマで六角穴付きのブランクを成形加
工したのち、ローリング機でねじ山を転造加工する方法
が採用されている。前者は上述したすりわり付き止めね
じの製造方法と同様の問題点があり、後者は一次加工し
たブランクに頭部がないため、二次加工のねじ転造工程
においてパーツフィーダなどの供給装置を必要とするば
かりではなく、六角穴が潰れて変形するおそれがあっ
た。On the other hand, in the production of hexagon socket set screws, as with the above-mentioned slotted set screws, a method using an automatic lathe, and after forming a hexagon socket blank with a header or nut homer, the threads are rolled with a rolling machine. The method of rolling is adopted. The former has the same problems as the method for manufacturing the slotted set screw described above, and the latter requires a feeding device such as a parts feeder in the thread rolling process of the secondary processing because the blank processed by the primary processing has no head. Not only that, but the hexagonal hole may be crushed and deformed.
発明が解決しようとする課題 本発明は、上述した従来の製造方法の問題点を解決した
もので、通常のヘッダ及びローリング機（ねじ転造盤）
を用いて頭なしのすりわり付き止めねじ及び六角穴付き
止めねじを高い精度で安価に量産できる頭なし止めねじ
の製造方法を提供することを目的としている。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention solves the above-mentioned problems of the conventional manufacturing method, and an ordinary header and rolling machine (screw rolling machine).
It is an object of the present invention to provide a method for manufacturing a headless set screw that enables mass production of a headless set screw and a hexagon socket set screw with high accuracy and at low cost.
課題を解決するための手段 上記目的を達成するために、本発明によるすりわり付き
止めねじの製造方法においては、所定長さの丸棒素材の
一端に、軸線と同心の凹部と鍔状頭部を有するブランク
を成形加工し、前記鍔状頭部の首下にすりわりの深さに
対応する長さだけねじ山を転造加工したのち、前記鍔状
頭部から軸方向に延びる一定深さのすりわりを加工し、
しかる後、前記ブランクの全長に亘ってねじ山を転造加
工すると同時に、前記鍔状頭部を持ち上げ前記凹部の底
面周縁に沿って押し切るように切断することを特徴とす
る。Means for Solving the Problems In order to achieve the above object, in the method for manufacturing a slotted set screw according to the present invention, a concave portion concentric with an axis and a collar-shaped head are provided at one end of a round bar material having a predetermined length. After forming a blank having, and rolling the screw thread by a length corresponding to the depth of the slit under the neck of the collar-shaped head, a constant depth extending in the axial direction from the collar-shaped head Processing the smoothness of
After that, the thread is rolled over the entire length of the blank, and at the same time, the collar-shaped head is lifted and cut so as to be pushed along the peripheral edge of the bottom surface of the recess.
また、六角穴付き止めねじの製造方法においては、所定
長さの丸棒素材の一端に、軸線と同心の凹部及び該凹部
の表面から軸線方向に延びる六角穴と鍔状頭部を有する
ブランクを成形加工し、前記ブランクの全長に亘ってね
じ山を転造加工すると同時に、前記鍔状頭部を持ち上げ
前記凹部の底面周縁に沿って押し切るように切断するこ
とを特徴とする。Further, in the method for producing a hexagon socket set screw, a blank having a recess concentric with the axis and a hexagonal hole extending in the axial direction from the surface of the recess and a flange-shaped head is provided at one end of a round bar material having a predetermined length. At the same time as forming and rolling the thread over the entire length of the blank, the collar-shaped head is lifted and cut so as to be pressed along the peripheral edge of the bottom surface of the recess.
作用 本発明方法においては、ブランクの一端に鍔状頭部を有
している状態でねじ山を転造加工するので、通常のロー
リング機（ねじ転造盤）により連続加工でき、かつねじ
転造加工と同時に、前記鍔状頭部を持ち上げ前記凹部の
底面周縁に沿って押し切るように切断するので、美麗な
仕上がりが得られる。Effect In the method of the present invention, the thread is rolled in a state where the blank has the flange-shaped head at one end, so that it can be continuously processed by an ordinary rolling machine (screw rolling machine) and the thread rolling can be performed. At the same time as the processing, the collar-shaped head is lifted and cut so as to be pressed along the peripheral edge of the bottom surface of the recess, so that a beautiful finish can be obtained.
また、すりわり付き止めねじの場合、前記鍔状頭部の首
下にすりわりの深さに対応する長さだけねじ山を転造加
工したのち、前記鍔状頭部から軸方向に延びる一定深さ
のすりわりを加工するので、前記ブランクの全長に亘っ
てねじ山を転造加工する際に、すりわりを設けた箇所に
は大きな力が掛からない。したがって、すりわりの溝面
が変形するおそれはない。Further, in the case of a set screw with a slot, after thread-forming the thread under the neck of the collar-shaped head by a length corresponding to the depth of the slot, a fixed thread extending in the axial direction from the collar-shaped head is formed. Since the depth slit is machined, when the thread is rolled over the entire length of the blank, a large force is not applied to the spot where the slit is provided. Therefore, there is no possibility that the groove surface of the slip will be deformed.
一方、六角穴付き止めねじの場合には、前述のように鍔
状頭部を有している状態でねじ山を転造加工するので、
予めブランクに設けた六角穴が潰れて変形することがな
い。On the other hand, in the case of a hexagon socket head set screw, as described above, the thread is rolled with the collar-shaped head,
The hexagonal holes provided in the blank in advance will not be crushed and deformed.
実施例 以下、本発明の実施例を図面に基づいて説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図ないし第５図は、本発明方法にするすりわり付き
止めねじの製造工程を示している。1 to 5 show a manufacturing process of a slotted set screw according to the method of the present invention.
金属線材を所定長さに切断して丸棒状のねじ素材１を形
成し、該素材１を図示しない通常のヘッダにより圧造成
形して、第２図に示すように一端に軸心と同心の凹部２
と鍔状頭部３を有するブランク1aを形成する。A metal rod is cut into a predetermined length to form a round rod-shaped screw raw material 1, and the raw material 1 is press-formed by an ordinary header (not shown). As shown in FIG. 2, one end is concentric with the shaft center. Two
A blank 1a having a collar-shaped head 3 is formed.
次に、第３図に示すように、予備転造ダイス11,11を用
いてブランク1aの鍔状頭部３の首下に後述するすりわり
溝５の深さに対応する軸方向長さだけねじ山４を転造加
工したのち、図示しない通常のすりわり機により鍔状頭
部３の中央から軸方向に延びる一定深さのすりわり溝５
を切削加工する（第４図参照）。Next, as shown in FIG. 3, by using the pre-rolling dies 11 and 11, only the axial length corresponding to the depth of the sliding groove 5 described below is provided under the collar-shaped head 3 of the blank 1a. After the thread 4 is rolled, a slit 5 having a constant depth extending in the axial direction from the center of the collar-shaped head 3 is formed by an ordinary slide machine (not shown).
Is cut (see FIG. 4).
しかる後、第５図に示すように、ねじ転造ダイス12,12
によりブランク1aの全長に亘ってねじ山４を転造加工す
ると同時に、ねじ転造ダイス12,12の上に重ね合わせた
押し切りダイス13,13によって、鍔状頭部３を持ち上げ
凹部２の底面６の周縁6aに沿って押し切るように切断
し、頭なしのすりわり付き止めねじ７が完成する。10は
切断除去されたスクラップを示す。Then, as shown in FIG. 5, the thread rolling dies 12, 12
The thread 4 is rolled over the entire length of the blank 1a by the above-mentioned method, and at the same time, the collar-shaped head 3 is lifted by the push-cutting dies 13, 13 superposed on the thread rolling dies 12, 12, and the bottom surface 6 of the recess 2 is It cuts so that it may be pushed down along the peripheral edge 6a, and the headless slotted set screw 7 is completed. 10 indicates scraps cut and removed.
第６図ないし第９図は、本発明方法による六角穴付き止
めねじの製造工程を示している。6 to 9 show the manufacturing process of the hexagon socket set screw according to the method of the present invention.
金属線材を所定長さに切断して丸棒状のねじ素材１を形
成し、該素材１を図示しない通常のヘッダにより圧造成
形して、一端に軸心と同心の凹部２と鍔状頭部３を有
し、更に凹部２の底面６から軸方向に延びる六角穴８を
有するブランク1bを形成する。A round rod-shaped screw material 1 is formed by cutting a metal wire into a predetermined length, and the material 1 is press-formed by an ordinary header (not shown), and a recess 2 and a collar-shaped head 3 which are concentric with the shaft center at one end. And a blank 1b having a hexagonal hole 8 extending in the axial direction from the bottom surface 6 of the recess 2.
しかる後、第８図に示すように、ねじ転造ダイス14,14
によりブランク1bの全長に亘ってねじ山４を転造加工す
ると同時に、第９図に示すように、鍔状頭部３を持ち上
げ凹部２の底面６の周縁6aに沿って押し切るように切断
し、頭なしの六角穴付き止めねじ９が完成する。Then, as shown in FIG. 8, thread rolling dies 14,14
The thread 4 is rolled over the entire length of the blank 1b by, and at the same time, as shown in FIG. 9, the collar-shaped head 3 is lifted and cut so as to be pushed along the peripheral edge 6a of the bottom surface 6 of the recess 2, A headless hexagon socket set screw 9 is completed.
発明の効果 以上説明したように本発明方法によれば、通常のヘッダ
とすりわり機及び通常のローリング機（ねじ転造盤）を
用いてすりわり付き止めねじ及び六角穴付き止めねじを
製造することができ、安価に提供できる。EFFECTS OF THE INVENTION As described above, according to the method of the present invention, a set screw with a slot and a set screw with a hexagonal hole are manufactured using a normal header and a slide machine and a normal rolling machine (screw rolling machine). It can be provided at low cost.
しかも、仕上がりが美麗で品質的にもすぐれており、切
削加工した製品と遜色がない。Moreover, it has a beautiful finish and excellent quality, and is comparable to a machined product.
第１図ないし第５図は本発明方法によるすりわり付き止
めねじの製造工程を示す工程説明図、第６図ないし第９
図は本発明方法による六角穴付き止めねじの製造工程を
示す工程説明図である。 １……ねじ素材、1a,1b……ブランク ２……凹部、３……鍔状頭部 ４……ねじ山、５……すりわり溝 ６……凹部２の底面、6a……底面６の周縁 ７……すりわり付き止めねじ ８……六角穴 ９……六角穴付き止めねじ 10……スクラップ1 to 5 are process explanatory views showing the manufacturing process of a slotted set screw according to the method of the present invention, and FIGS. 6 to 9
The drawings are process explanatory views showing a manufacturing process of a hexagon socket set screw according to the method of the present invention. 1 ... Screw material, 1a, 1b ... Blank 2 ... Concave, 3 ... Brim head 4 ... Screw, 5 ... Slitting groove 6 ... Bottom of recess 2, 6a ... of bottom 6 Edge 7 …… Set screw with slot 8 …… Hexagonal hole 9 …… Set screw with hexagonal hole 10 …… Scrap
Claims (2)
の凹部と鍔状頭部を有するブランクを成形加工し、 前記鍔状頭部の首下にすりわりの深さに対応する長さだ
けねじ山を転造加工したのち、前記鍔状頭部から軸方向
に延びる一定深さのすりわりを加工し、 しかる後、前記ブランクの全長に亘ってねじ山を転造加
工すると同時に、前記鍔状頭部を持ち上げ前記凹部の底
面周縁に沿って押し切るように切断することを特徴とす
る頭なしすりわり付き止めねじの製造方法。1. A blank having a recessed portion concentric with the axis and a collar-shaped head is formed on one end of a round bar material having a predetermined length, and a blank depth corresponding to the neck is provided under the collar-shaped head. After rolling the thread for the length to be machined, machining a slit of a certain depth extending axially from the collar-shaped head, and then rolling the thread over the entire length of the blank. At the same time, a method for manufacturing a headless slotted set screw, characterized in that the collar-shaped head is lifted and cut so as to be pushed along the peripheral edge of the bottom surface of the recess.
の凹部及び該凹部の底面から軸線方向に延びる六角穴と
鍔状頭部を有するブランクを成形加工し、 前記ブランクの全長に亘ってねじ山を転造加工すると同
時に、前記鍔状頭部を持ち上げ前記凹部の底面周縁に沿
って押し切るように切断することを特徴とする頭なし六
角穴付き止めねじの製造方法。2. A blank having a concave portion concentric with the axis and a hexagonal hole extending in the axial direction from the bottom surface of the concave portion and a flange-shaped head is formed on one end of a round bar material having a predetermined length, and the blank has a total length. A method for manufacturing a headless hexagon socket head set screw, which comprises rolling the threads over the same time and simultaneously lifting the collar-shaped head and cutting it so as to push it along the peripheral edge of the bottom surface of the recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16596090A JPH0722797B2 (en) | 1990-06-25 | 1990-06-25 | Headless Set Screw Manufacturing Method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16596090A JPH0722797B2 (en) | 1990-06-25 | 1990-06-25 | Headless Set Screw Manufacturing Method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0455032A JPH0455032A (en) | 1992-02-21 |
| JPH0722797B2 true JPH0722797B2 (en) | 1995-03-15 |
Family
ID=15822289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16596090A Expired - Lifetime JPH0722797B2 (en) | 1990-06-25 | 1990-06-25 | Headless Set Screw Manufacturing Method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722797B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI610030B (en) * | 2015-08-31 | 2018-01-01 | 洪國珍 | Slotted set screw structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5134376B2 (en) | 2006-02-10 | 2013-01-30 | 日本碍子株式会社 | Continuous furnace exhaust method and exhaust structure |
| JP5222939B2 (en) | 2007-04-20 | 2013-06-26 | ジェネラル・インスツルメント・コーポレーション | Simulate shallow depth of field to maximize privacy in videophones |
-
1990
- 1990-06-25 JP JP16596090A patent/JPH0722797B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5134376B2 (en) | 2006-02-10 | 2013-01-30 | 日本碍子株式会社 | Continuous furnace exhaust method and exhaust structure |
| JP5222939B2 (en) | 2007-04-20 | 2013-06-26 | ジェネラル・インスツルメント・コーポレーション | Simulate shallow depth of field to maximize privacy in videophones |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0455032A (en) | 1992-02-21 |
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