JPH0270345A - Manufacture of nail - Google Patents
Manufacture of nailInfo
- Publication number
- JPH0270345A JPH0270345A JP21927688A JP21927688A JPH0270345A JP H0270345 A JPH0270345 A JP H0270345A JP 21927688 A JP21927688 A JP 21927688A JP 21927688 A JP21927688 A JP 21927688A JP H0270345 A JPH0270345 A JP H0270345A
- Authority
- JP
- Japan
- Prior art keywords
- pointed
- drum part
- drum
- forming
- rolling
- 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 6
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 11
- 238000005242 forging Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000000630 rising effect Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は上端に頭部を形成する胴部下端を逆円錐状に尖
らせると共に、前記胴部下側外周面にねじ溝を形成した
釘の製造方法に関する。Detailed Description of the Invention "Field of Industrial Application" The present invention relates to a nail having a lower end of the body forming a head at the upper end thereof having an inverted conical shape, and a screw groove formed on the outer peripheral surface of the lower side of the body. Regarding the manufacturing method.
「従来の技術」
従来上記のような釘は、針本体を製釘機によって形成し
、ねじ溝を転造によって形成していた。"Prior Art" Conventionally, in the above nails, the needle body was formed by a nail making machine, and the thread groove was formed by rolling.
「発明が解決しようとする問題点」
しかしながら製釘機で形成した針本体は、左右又は上下
からの挟持力が素材に太き(作用し、胴部断面が楕円形
になり、その胴部を左右又は上下からカッターで挾み円
錐状に切断するため、胴部の変形とカッターのタイミン
グのずれが重なり、左右等しい尖部の立上がり角度を得
られず、胴部な斜めに打込むと共に、折曲りを招く精度
面での問題があった。``Problems to be Solved by the Invention'' However, the needle body formed using a nail making machine has a large clamping force applied to the material from the left and right or top and bottom, and the cross section of the body becomes oval. Since the cutter is used to cut from the left and right or from the top and bottom into a conical shape, the deformation of the body and the timing shift of the cutter overlap, making it impossible to obtain the same rising angle of the apex on the left and right sides. There were problems with accuracy that led to bending.
「問題点を解決するための手段」
然るに本発明は、丸棒状の素材を鍛造加工して頭部及び
胴部を形成した後、一対のダイスにより前記胴部外周面
にねじ溝を転造するとき、同時に胴部下端に逆円錐状の
尖部を形成したものである。"Means for Solving the Problems" However, the present invention involves forging a round bar-shaped material to form a head and a body, and then rolling thread grooves on the outer peripheral surface of the body using a pair of dies. At the same time, an inverted conical tip was formed at the lower end of the body.
「作 用」
従って本発明によれば、真円の胴部を容易に形成し得る
と共に、胴部の軸心な中心とする転勤で尖部を形成する
ことにより、その尖部の左右立上がり角を等しく形成し
得、従来に比べて製品を高精度に仕上げ得るようにした
ものである。"Function" Therefore, according to the present invention, it is possible to easily form a perfectly circular body, and by forming the apex by shifting around the axial center of the body, the left and right rising angles of the apex can be easily formed. This makes it possible to form the parts equally, and to finish the product with higher precision than in the past.
「実施例」
以下本発明の実施例を図面に基づいて詳述する、第1図
は製造工程説明図、第2図は製品の全体図である1図中
+11はパチンコ釘であり、丸棒状の胴部(2)上端に
上面が球面の頭部(3)を、また下端に逆円錐状の尖部
(4)をそれぞれ形成すると共に、前記胴部(2)の下
側外周面にねじ溝(5)を形成している。"Example" Examples of the present invention will be described below in detail based on the drawings. Figure 1 is an explanatory diagram of the manufacturing process, and Figure 2 is an overall view of the product. In Figure 1, +11 is a pachinko nail, which has a round bar shape. A head (3) with a spherical upper surface is formed at the upper end of the body (2), and an inverted conical tip (4) is formed at the lower end, and a screw is formed on the lower outer peripheral surface of the body (2). A groove (5) is formed.
上記のパチンコ釘(1)を製造する場合、先ず第1図(
Al tBlに示す如く真鍮製の線材を所定長さに切断
した丸棒状の素材(6)を、第1のすえ込みダイス(7
)及びポンチ(8)と第2のすえ込みダイス(9)及び
ポンチ(lO)を用い2回に分けてすえ込み、第1図[
C1に示す如く素材(6)に製品の胴部(2)直径並び
にその一端に頭部(7)形状を与える。When manufacturing the above-mentioned pachinko nail (1), first of all, as shown in Fig. 1 (
As shown in Al tBl, a round bar-shaped material (6) made by cutting a brass wire into a predetermined length is placed in the first swaging die (7).
) and punch (8), second swaging die (9) and punch (lO), swaging in two steps, as shown in Fig. 1 [
As shown in C1, the diameter of the body (2) of the product and the shape of the head (7) are given to one end of the material (6).
然る後第1図(DJに示す如(、対向状に配置する一対
の転造ダイス(Ill (121間に前記素材(6)の
軸部を供給し、一方のダイス+111を固定すると共に
、他方のダイス(12)を長手方向に往復移動させ、前
記素材(6)の軸部な各ダイス(111(121でもみ
上げるもので(ローリング)、第3図及び第4図に示す
如く、前記各ダイス+Ill (121の対向面つまり
転造面(llal (12alには、ねじ溝形成用山部
(13)を傾斜させて長手方向に一定幅で連続形成する
と共に、ローリング方向に向って順次幅を下側に拡大し
、しかも各ダイス+ill (121間の間隔を順次狭
め、もみ上げ終端手前の(P)位置でその間隔をなくす
傾斜切断面(14)を前記山部(13)下側に一定幅の
溝(15)を介して形成している。Thereafter, as shown in FIG. The other die (12) is moved back and forth in the longitudinal direction, and each die (111 (121) is used to roll up the shaft of the material (6) (rolling), as shown in FIGS. 3 and 4. The opposing surface of each die + Ill (121, that is, the rolling surface (llal) has a thread groove forming mountain part (13) inclined and continuously formed with a constant width in the longitudinal direction, and the thread groove forming part (13) is formed continuously with a constant width in the rolling direction. is enlarged downward, and the interval between each die + ill (121) is sequentially narrowed, and the inclined cutting surface (14) that eliminates the interval at the position (P) before the end of the sideburn is fixed at the lower side of the mountain part (13). It is formed through a wide groove (15).
この結果、前記山部(13)が素材(6)の軸部下側外
周面に食付いてから数回転で製品のねじ溝(5)が転造
されると共に、前記素材(6)の軸部がダイス(Ill
(12)間に供給されてから前記(P)位置までの距
離(Ll をその軸心を中心に転勤するとき、前記傾斜
切断面(14)によって素材(6)の軸部下端が逆円錐
状に切断され、素材(6)に製品の胴部(2)長さと左
右立上がり角(θ、)(C2)が等しい逆円錐状の尖部
(4)形状が与えられ、第2図に示すパチンコ釘(2)
が製造されるものである。As a result, the thread groove (5) of the product is rolled in several rotations after the crest (13) bites into the outer peripheral surface of the lower side of the shaft of the material (6), and the shaft of the material (6) is rolled. is the die (Ill
(12) When the distance (Ll) from being supplied to the position (P) is transferred around its axis, the lower end of the axis of the material (6) is shaped like an inverted cone due to the inclined cutting surface (14). The material (6) is given an inverted conical tip (4) shape whose left and right rising angles (θ, ) (C2) are equal to the length of the body (2) of the product. Nail (2)
is manufactured.
なお、前記ねじ溝(5)と尖部(4)の間には尖部(4
)形成時の肉の戻り代である隙間(16)が介在してい
る。Note that there is a tip (4) between the thread groove (5) and the tip (4).
) There is a gap (16) that is the return allowance for the meat during formation.
「発明の効果」
以上実施例から明らかなように本発明は、丸棒状の素材
(6)を鍛造加工して頭部(3)及び胴部(2)を形成
した後、一対のダイス(ill (121により前記胴
部(2)外周面にねじ溝(5)を転造するとき、同時に
胴部(2)下端に逆円錐状の尖部(4)を形成したもの
で、真円の胴部(2)を容易に形成できると共に、胴部
(2)の軸心な中心とする転勤で尖部(4)を形成する
ことにより、その尖部(4)の左右立上がり角(θ、)
(θ雪)を等しく形成できるなど、従来に比べて製品(
1)を高精度に仕上げることができるから、パチンコ釘
(1)などパチンコ台に適正に打込むことができる顕著
な効果を奏するものである。"Effects of the Invention" As is clear from the above embodiments, the present invention forges a round bar-shaped material (6) to form a head (3) and a body (2), and then a pair of dies (ill). (When rolling the thread groove (5) on the outer peripheral surface of the body (2) by 121, an inverted conical tip (4) is formed at the lower end of the body (2) at the same time. The left and right rising angles (θ,
(θ snow) can be formed equally, compared to conventional products (
Since 1) can be finished with high precision, it has a remarkable effect that pachinko nails (1) can be properly driven into pachinko machines.
第1図は本発明の一実施例を示す製造工程説明図、第2
図は製品の全体図、第3図はダイスの正面図、第4図は
同断面図である。
(11・・・ パチンコ(製品)
2・ ・・・
3 ・・・
4 ・・・
5 ・・・
6 ・・・Fig. 1 is a manufacturing process explanatory diagram showing one embodiment of the present invention;
The figure is an overall view of the product, FIG. 3 is a front view of the die, and FIG. 4 is a sectional view thereof. (11... Pachinko (product) 2... 3... 4... 5... 6...
Claims (1)
、一対のダイスにより前記胴部外周面にねじ溝を転造す
るとき、同時に胴部下端に逆円錐状の尖部を形成したこ
とを特徴とする釘の製造方法。After forging a round bar-shaped material to form a head and a body, when rolling a thread groove on the outer peripheral surface of the body using a pair of dies, at the same time an inverted conical tip is formed at the bottom end of the body. A method for manufacturing nails characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21927688A JPH0270345A (en) | 1988-09-01 | 1988-09-01 | Manufacture of nail |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21927688A JPH0270345A (en) | 1988-09-01 | 1988-09-01 | Manufacture of nail |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0270345A true JPH0270345A (en) | 1990-03-09 |
Family
ID=16732982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21927688A Pending JPH0270345A (en) | 1988-09-01 | 1988-09-01 | Manufacture of nail |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0270345A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010069588A (en) * | 2001-04-19 | 2001-07-25 | 서광식 | pin for a railway vehicle and how to make this |
KR20030094981A (en) * | 2002-06-11 | 2003-12-18 | 주식회사 아세아볼트 | Rolling dice used therein and method for producing bolt |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS516844A (en) * | 1974-07-09 | 1976-01-20 | Ai Bii Kei Kk | Tatsupinnejito sonoseizohohooyobidaisochi |
JPS55112415A (en) * | 1979-02-22 | 1980-08-30 | Nitto Seiko Kk | Manufacture of differential shaped pointed tapping screw |
JPS63168244A (en) * | 1986-12-29 | 1988-07-12 | Shinjiyou Seisakusho:Kk | Method and device for manufacturing stepped nail |
-
1988
- 1988-09-01 JP JP21927688A patent/JPH0270345A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS516844A (en) * | 1974-07-09 | 1976-01-20 | Ai Bii Kei Kk | Tatsupinnejito sonoseizohohooyobidaisochi |
JPS55112415A (en) * | 1979-02-22 | 1980-08-30 | Nitto Seiko Kk | Manufacture of differential shaped pointed tapping screw |
JPS63168244A (en) * | 1986-12-29 | 1988-07-12 | Shinjiyou Seisakusho:Kk | Method and device for manufacturing stepped nail |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010069588A (en) * | 2001-04-19 | 2001-07-25 | 서광식 | pin for a railway vehicle and how to make this |
KR20030094981A (en) * | 2002-06-11 | 2003-12-18 | 주식회사 아세아볼트 | Rolling dice used therein and method for producing bolt |
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