JPS5838657B2 - taper coil spring - Google Patents
taper coil springInfo
- Publication number
- JPS5838657B2 JPS5838657B2 JP55044333A JP4433380A JPS5838657B2 JP S5838657 B2 JPS5838657 B2 JP S5838657B2 JP 55044333 A JP55044333 A JP 55044333A JP 4433380 A JP4433380 A JP 4433380A JP S5838657 B2 JPS5838657 B2 JP S5838657B2
- Authority
- JP
- Japan
- Prior art keywords
- coil spring
- tapered
- wire
- section
- diameter
- 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
- 238000005096 rolling process Methods 0.000 description 4
- 238000005242 forging Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/08—Wound springs with turns lying in mainly conical surfaces, i.e. characterised by varying diameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/042—Wound springs characterised by the cross-section of the wire
- F16F1/043—Wound springs characterised by the cross-section of the wire the cross-section varying with the wire length
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Description
【発明の詳細な説明】
本発明はテーパ部を有する素線から形成されたテーパコ
イルはねに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tapered coil spring formed from a wire having a tapered portion.
テーパ部を有する素線を巻回してテーパコイルばねを形
成する場合、従来はテーパ部の断面が円形をなす素線を
用いるようにしていたので、テーパ部の成形は旋削また
は回転鍛造等によらざるを得す、したがって素材の生産
性および材料歩留り等の向上が困難であった。When forming a tapered coil spring by winding a wire with a tapered part, conventionally a wire with a circular cross section at the tapered part was used, so the tapered part could not be formed by turning or rotary forging. Therefore, it has been difficult to improve material productivity, material yield, etc.
本発明は上記事情のもとになされたもので、その目的と
するところは、従来の丸断面テーパコイルばねに比し実
質的に同等な性能を有しながら、より安価に製造し得る
テーパコイルばねを提供することにある。The present invention was made under the above circumstances, and its purpose is to provide a tapered coil spring that can be manufactured at a lower cost while having substantially the same performance as a conventional round cross-section tapered coil spring. It is about providing.
以下、本発明につき図面を参照しながら説明する。Hereinafter, the present invention will be explained with reference to the drawings.
第１図に例示するテーパコイルばねは第２図に示すよう
な素線１を巻回することによって形成される。The tapered coil spring illustrated in FIG. 1 is formed by winding a strand 1 as shown in FIG. 2.
素線１は中間大径部２と、両端小径部３゜４と、これら
の間に設けられたテーパ部５，６とを備えている。The strand 1 includes an intermediate large-diameter portion 2, small-diameter portions 3.4 at both ends, and tapered portions 5, 6 provided between these portions.
大径部２は断面が半径馬の円形状をなしている。The large diameter portion 2 has a circular cross section with a radius of a horse.
小径部３，４およびテーパ部５゜６は各辺７・・・が外
方に弧状に膨出するとともに各辺の長さがほぼ等しくな
るような略正多角形状（図は８辺形状の場合）をなして
いる。The small diameter portions 3, 4 and the tapered portion 5゜6 have a substantially regular polygonal shape (the figure shows an 8-sided ).
次表に素線が直径ｄ。The following table shows the wire diameter d.
の円形断面のものＡを基準として、これとコイル径、巻
数およびばね定数が相等しい場合における上記実施例Ｂ
と、各辺が外方に弧状に膨出する１２辺形状の素線断面
図を有するものＣとの捩り剛性・Φ、内接円半径比ｕｒ
ｔ。The above embodiment B in which the coil diameter, number of turns, and spring constant are the same as that of the circular cross section A
The torsional rigidity, Φ, and inscribed circle radius ratio ur between
t.
および最大捩り応力比σ／σ０を比較して示す。and the maximum torsional stress ratio σ/σ0 are shown in comparison.
表中、Ｇは横弾性係数である。In the table, G is the transverse elastic modulus.
なお、上記実施例はＲ＝ ６．２ ｒｒａｎ 、 ｄ
＝ ９ ｍｍの場合である。In addition, in the above example, R=6.2 rran, d
= 9 mm.
上記素線１は半径札の円形状断面を有するばね素材をロ
ール圧延することによってテーパ部５゜６および小径部
３，４が形成される。The wire 1 has a tapered portion 5.degree. 6 and small diameter portions 3, 4 formed by rolling a spring material having a circular cross section.
この圧延に用いられるロールは、たとえば外周部に断面
が半径Ｒの円弧状をなす凹溝を有して４個１組をなし、
各四槽の相互対向部に挿通させるばね素材と転接して上
記各辺７・・・を圧延成形し得るように構成されている
。The rolls used for this rolling have, for example, a concave groove on the outer periphery with a cross section in the shape of an arc with a radius R, forming a set of four rolls,
It is configured so that each of the sides 7 can be rolled and formed by rolling contact with a spring material inserted through the mutually opposing portions of each of the four tanks.
上記構成によれば素線１はロール圧延によって形成し得
るので従来の旋削や回転鍛造による場合に比し生産性お
よび材料歩留りが大幅に向上される。According to the above configuration, since the wire 1 can be formed by roll rolling, productivity and material yield are significantly improved compared to conventional turning or rotary forging.
また、各辺７・・・を円弧状に形成したので内接円直径
ｄに対する外接円直径りの割合（小径部３゜４において
最大で大径部２に近ずくほど小さくなる）をたとえばＤ
／ｄ≦１．０２２程度にすることができ（正８角辺形の
場合はＤ／ｄ＝１．０８２ ）、素線１はコイリングミ
熱処理、ショットピーニングおよびセツチング等の諸工
程を円形断面の素線を用いた場合と同等に施すことがで
きる。In addition, since each side 7... is formed in an arc shape, the ratio of the diameter of the circumscribed circle to the diameter d of the inscribed circle (maximum at the small diameter part 3°4, which decreases as it approaches the large diameter part 2) is, for example, D
/d≦1.022 (D/d=1.082 in the case of a regular octagon), and the strand 1 undergoes various processes such as coiling, heat treatment, shot peening, and setting in a circular cross-section strand. It can be applied in the same way as when using a wire.
そして、円形断面の素線から形成されコイル径、巻数、
はね定数および製造工程が同等なテーパコイルばねと同
一条件で疲労式１験を行なった結果、両者間には実質的
な差異が認められなかった。The coil diameter, number of turns, and
A fatigue test was conducted under the same conditions as a tapered coil spring with the same spring constant and manufacturing process, and no substantial difference was found between the two.
なお、本発明は上記実施例のみに限定されるものではな
く、たとえば大径部２および小径部３゜４等の有無およ
び数、ならびにテーパ部５，６の勾配および数等は任意
に設定可能である。Note that the present invention is not limited to the above-mentioned embodiments; for example, the presence or absence and number of the large diameter portion 2 and the small diameter portion 3° 4, etc., the slope and number of the tapered portions 5 and 6, etc. can be arbitrarily set. It is.
また、テーパ部５，６における断面形状は辺の数を任意
に設定でき、かつ中心に対し非対称であってもよい。Further, the cross-sectional shape of the tapered portions 5 and 6 can have any number of sides, and may be asymmetrical with respect to the center.
その他、本発明の要旨とするところの範囲内で種々な変
更ないし応用が可能である。In addition, various modifications and applications are possible within the scope of the gist of the present invention.
本発明は、上述したようにテーパ部の断面を各辺が弧状
に膨出するような円形に近似した多角形状に形成したの
で、素線をロール圧延し得るから従来に比し生産性およ
び材料歩留りを大幅に向上することができ、しかもねじ
り剛性の効果を断面円形状のものに近付けることができ
るため断面円形状の素線を用いた場合と実質的に同等の
性能を備えたテーパコイルばねをより安価に提供するこ
とができる。In the present invention, as described above, the cross section of the tapered part is formed into a polygonal shape similar to a circle with each side bulging out in an arc shape, so that the strands can be rolled, which improves productivity and materials compared to the past. The yield can be greatly improved, and the effect of torsional stiffness can be brought close to that of a spring with a circular cross section, so it is possible to create a tapered coil spring with substantially the same performance as when using a wire with a circular cross section. It can be provided at a lower price.
第１図は本発明の一実施例を示す断面図、第２図は同側
の素線を示す展開図、第３図は第２図の１Ｎ−Ｉ線に沿
う拡大断面図である。
１・・・素線、５，６・・・テーパ部、７・・・辺。FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a developed view showing the wire on the same side, and FIG. 3 is an enlarged sectional view taken along line 1N-I in FIG. 1... Element wire, 5, 6... Taper part, 7... Side.
Claims (1)
おいて、上記テーパ部は、各辺が弧状に膨出するような
円形に近似した多角形状断面を有することを特徴とする
テーパコイルばね。1. A tapered coil spring in which a wire having a tapered portion is wound into a coil shape, wherein the tapered portion has a polygonal cross section that approximates a circle with each side bulging in an arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55044333A JPS5838657B2 (en) | 1980-04-04 | 1980-04-04 | taper coil spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55044333A JPS5838657B2 (en) | 1980-04-04 | 1980-04-04 | taper coil spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56141431A JPS56141431A (en) | 1981-11-05 |
| JPS5838657B2 true JPS5838657B2 (en) | 1983-08-24 |
Family
ID=12688580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55044333A Expired JPS5838657B2 (en) | 1980-04-04 | 1980-04-04 | taper coil spring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838657B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7993244B2 (en) * | 2008-06-06 | 2011-08-09 | Weller Scott M | Cushioning device and spring floor system incorporating same |
| US11371575B1 (en) * | 2020-12-07 | 2022-06-28 | Nhk Spring Co., Ltd. | Coil spring |
| US11940031B2 (en) | 2022-03-24 | 2024-03-26 | Nhk Spring Co., Ltd. | Coil spring |
| US11821485B1 (en) | 2022-06-01 | 2023-11-21 | Nhk Spring Co., Ltd. | Coil spring |
-
1980
- 1980-04-04 JP JP55044333A patent/JPS5838657B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56141431A (en) | 1981-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4738593A (en) | Centrifugal blower wheel | |
| US5469604A (en) | Ring for swaging and method of fabricating it | |
| JPS5838657B2 (en) | taper coil spring | |
| SU912584A1 (en) | Bicycle handle-bar | |
| JPS63115640A (en) | Coil-shaped tapered wire bar | |
| JPS6174745A (en) | Manufacture of piston ring made of steel | |
| JPS6021435Y2 (en) | tire cord | |
| JPS61233214A (en) | torque rod | |
| JPS6330603Y2 (en) | ||
| WO1995017112A1 (en) | Finger rings | |
| JPH0231215Y2 (en) | ||
| JPS6257405B2 (en) | ||
| JP3449449B2 (en) | Winding method of deformed steel wire rod for oil ring of internal combustion engine | |
| US1294161A (en) | Gromet. | |
| JPS59190527A (en) | Metal coil spring and its manufacturing method | |
| US1245270A (en) | Process of forming tapering-cross-section disks. | |
| JPS6372442A (en) | Manufacture of rim stock for automobile | |
| JPS58145309A (en) | Production of unevenly walled pipe | |
| JPS60237235A (en) | Coil spring | |
| JPS59140919A (en) | Spherical bearing and its manufacturing method | |
| US5339879A (en) | Pneumatic tire having opposite spiral oriented beads | |
| JPH01273707A (en) | Bead wire | |
| JPS5910432A (en) | Production of pulley with multiple v-grooves | |
| DE3344425A1 (en) | Rear rim for a tyre of a motor vehicle and method for its manufacture | |
| GB1584467A (en) | Tyre bead cores |