JPS61229434A - German type hook forming method for tension spring - Google Patents
German type hook forming method for tension springInfo
- Publication number
- JPS61229434A JPS61229434A JP14284385A JP14284385A JPS61229434A JP S61229434 A JPS61229434 A JP S61229434A JP 14284385 A JP14284385 A JP 14284385A JP 14284385 A JP14284385 A JP 14284385A JP S61229434 A JPS61229434 A JP S61229434A
- Authority
- JP
- Japan
- Prior art keywords
- hook
- coil
- wire rod
- forming
- forming tool
- 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.)
- Granted
Links
Landscapes
- Wire Processing (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、引張りばねの自動製造装置において、英式フ
ックしかできない形式の装置例えば特公昭３７−６７１
４号または特公昭５２−１１５０６号に開示されたロッ
カーアーム型の機械において引張りばねを製造をするに
際し独乙式フックの成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to an automatic tension spring manufacturing apparatus, for example, a device of a type that can only be produced by an English hook.
The present invention relates to a method for forming a doku-tsu type hook when manufacturing a tension spring in a rocker arm type machine disclosed in No. 4 or Japanese Patent Publication No. 52-11506.
従来技術
従来ばねの製造装置で知られているロッカアーム型のも
のには特公昭３７−６７１４号、特公昭５２１１３０６
号がある。このものは２個の送りローラで挾持された線
材が案内具の穴から送り出され線材に対して案内具の中
心よりずれた位置で直角方向の軸線を中心としてカムに
より規制揺動されるロッカーアーム端の成形工具が送り
出された線材の前面に進出したとき例えば両端フック付
引張りばねの第１フック部、ボディ部、第２フック部を
彎曲成形するもので１個のばねの成形中は連続して線材
を送り出し、間欠的に駆動することによって同じ工程を
繰返しばねを次々に製造するものであった。このものは
フック付の引張りばねのフックの形式は英式のものしか
製作することができなかった。Prior art Rocker arm type devices known as conventional spring manufacturing devices are disclosed in Japanese Patent Publication No. 37-6714 and Japanese Patent Publication No. 5211306.
There is a number. This is a rocker arm in which a wire held between two feed rollers is sent out from a hole in a guide, and the rocker arm is regulated by a cam about an axis perpendicular to the wire at a position offset from the center of the guide. When the forming tool at the end advances to the front side of the fed wire rod, for example, the first hook part, body part, and second hook part of a tension spring with hooks at both ends are formed into a curved shape. The wire rod was then sent out, and the same process was repeated to manufacture springs one after another by driving the wire intermittently. This type of tension spring with a hook could only be made in the English style.
発明が解決しようとする問題点
前記成形工具の動きの少ないロッカーアーム形の装置に
おいて、付加する要素及工程を極力少なくして簡単な構
成により引張りばねの製造において独乙式フックの成形
方法をうることである。Problems to be Solved by the Invention In the rocker arm type device in which the forming tool does not move much, it is possible to provide a method for forming a single-type hook in the production of tension springs with a simple structure by minimizing the number of added elements and processes. That's true.
問題点を解決するための手段
送り出しローラ１５，１９で挾持された線材の案内具４
３の前面に揺動するロッカーアーム４８に取付けられた
成形工具５０の進出によって線材を衝合させて第１７ツ
タ及びボディ部のコイルを順次成形する引張りばねの自
動製造装置において、−個のばねの製造中の連続した線
材送りに対して第１フック若しくは第１フックに続く直
線部の成形後にボディ部のコイルの成形の最初の一巻き
の４成形時に線材の送りを一旦停止させるとともに、コ
イル成形面に対してずれた位置で線材をひねるようにし
て第３成形工具５３と受け工具５４でコイルの巻始め位
置を挾持させ、この挾持点を屈曲点として第１成形工具
４７により第１フック若しくは第１フックに続く直線部
を前記コイルの成形面側に９０°以上の角度で屈曲させ
その後第２成形工具を進出させるとともに線材を送り、
引続いてボディ部のフィルを形成する方法である。Means for solving the problem Guide tool 4 for the wire held between feed rollers 15 and 19
In an automatic tension spring manufacturing apparatus, a forming tool 50 attached to a rocker arm 48 that swings on the front side of 3 is advanced to abut wire rods to sequentially form a 17th ivy and a coil of a body part. Continuous feeding of the wire during the production of the wire rod is temporarily stopped during the first four turns of forming the coil of the body after forming the first hook or the straight section following the first hook, and By twisting the wire at a position shifted from the forming surface, the third forming tool 53 and the receiving tool 54 are used to hold the coil at the starting position, and the first forming tool 47 uses this holding point as a bending point to attach the first hook. Alternatively, bend the straight part following the first hook at an angle of 90° or more toward the forming surface of the coil, then advance the second forming tool and feed the wire,
This method is followed by forming a fill for the body portion.
実施例 以下本発明の実施例を図面にもとづき説明する。Example Embodiments of the present invention will be described below based on the drawings.
先ず第２図においてモーターによって駆動されるカム軸
２は本例では３山の送りカム６と第１成形工具駆動用の
第１カム４と第２成形工具駆動用の第２カム５と第３成
形工具駆動用の第３カム６とが並列してそれぞれの作用
タイミングが第８図のようになるように取付角度が決め
られて固定されている。送りカム６には一端が扇形歯車
７に形成され支軸８で揺動可能な扇形歯車付レバー９の
他端のカムフォロア１０が接触し図示しないばねによっ
て離れないようにされている。扇ノヒ歯車７は一方面ク
ラッチ１１の歯車１２と噛合し、一方向のみの回転がカ
ム軸１３及び歯車１４に伝達される。歯車１４は線材の
送りローラ１５のローラ軸１６に固着された歯車１７と
噛合している。送りローラ軸１６には歯車１８が固定さ
れており、一対となる送りローラ１９のローラ軸２０に
固定で歯車１８と同ｔＩＩ数の歯車２１と噛合していて
、送り四−ラ１５，１９は互に逆方向に回転され、その
外周７面で線材を挾持して送り出す。線材の送りが前記
のカムによる伝導系統に対して特にボディ部のコイル成
形時の送りをサーボモータによる伝導系統によって行っ
ている。即ちサーボモータ２２の出力軸に固定のプーリ
２３が一方面クラッチ２４のプーリ２５とタイミングベ
ルト２６によって連結され一方面クラッチ２４のクラッ
チ軸２７に固定の歯車２８が送りローラ１５のローラ軸
１６に固定の歯車２９と噛合っている。そしてサーボモ
ータ２２の回転即ちボディ部のコイル成形時の送り址を
検出するエンコーダ３０がサーボモータ２２の出力軸の
歯車３１とエンコ°−ダ３０の入力軸の歯車３２との噛
合によって連結されている。First, in FIG. 2, the camshaft 2 driven by the motor has three feeding cams 6, a first cam 4 for driving the first forming tool, a second cam 5 for driving the second forming tool, and a third cam 5 for driving the second forming tool. The third cam 6 for driving the forming tool is fixed in parallel with the mounting angle determined so that the respective action timings are as shown in FIG. A cam follower 10 at the other end of a lever 9 with a sector gear, which has one end formed as a sector gear 7 and is swingable on a support shaft 8, contacts the feed cam 6 and is prevented from separating by a spring (not shown). The fan gear 7 meshes with the gear 12 of the one-sided clutch 11, and rotation in only one direction is transmitted to the camshaft 13 and gear 14. The gear 14 meshes with a gear 17 fixed to a roller shaft 16 of a wire feeding roller 15. A gear 18 is fixed to the feed roller shaft 16, and is fixed to the roller shaft 20 of a pair of feed rollers 19 and meshes with a gear 21 having the same number of tII as the gear 18. The wire rods are rotated in opposite directions, and the wire rod is fed out with its seven outer circumferential surfaces clamping the wire rod. In contrast to the above-mentioned transmission system using the cam for feeding the wire, the transmission system using a servomotor is used especially for feeding during coil forming of the body portion. That is, a pulley 23 fixed to the output shaft of the servo motor 22 is connected to a pulley 25 of the one-sided clutch 24 by a timing belt 26, and a gear 28 fixed to the clutch shaft 27 of the one-sided clutch 24 is fixed to the roller shaft 16 of the feed roller 15. The gear 29 meshes with the gear 29. An encoder 30 for detecting the rotation of the servo motor 22, that is, the feed end during coil forming of the body part, is connected by meshing with a gear 31 on the output shaft of the servo motor 22 and a gear 32 on the input shaft of the encoder 30. There is.
また送りローラ１５の回転、ｆｆ１ｌｌち線材の全送り
量を検出するエンコーダ３３がクラッチ軸２７に固定の
プーリ３４とエンコーダ５３の入力軸のプーリ３５とが
タイミングベルト３６によって連結されている。Further, an encoder 33 for detecting the rotation of the feed roller 15, ff1ll, the total feed amount of the wire rod, is fixed to the clutch shaft 27, and a pulley 34 and a pulley 35 on the input shaft of the encoder 53 are connected by a timing belt 36.
次に第１図において成形工具の配置を説明する。Next, the arrangement of the forming tools will be explained with reference to FIG.
以上の線材送り駆動機構を内蔵した機枠前面の基板４１
には送りローラ１５，１９で挾持された線材の中心線と
同軸に繰出穴４２を穿設した案内具４５が軸方向の位置
がｒｉ、１ 整可能で突出して取付けられている。この
案内具４３の中心よりずれた直角方向の支軸４４に第１
胃ツカ−アーム４５がほぼ中心において回転可能に支持
されており、先端には支軸４４と平行に工具ホルダ４６
を固定し該工具ホルダ４６の先端で案内具４３の繰出穴
４２より引張りばねのボディ部コイルの半径分はぼ下っ
た位置が工具上面となるように先端を鋭角とした第１成
形工具４７が取付けられている。ｆｓ２０ツカ−アーム
４８は第１０ツカ−アーム４５に対し９０°の位置で同
様に取付けられており、工具ホルダ４９の先端の第２成
形工具５０は繰出穴４２に対する部分が斜面であって繰
出穴中心線と一致する中心を有する成形溝が斜面上に形
成されている。又第３１２ツカーアーム５１は第１セツ
カーアーム４５と平行で工具ホルダ５２．第３成形工具
５３が反対位置にあり、第３成形工具５３は下面が平で
第１成形工具４７と平行で線径分繰出穴４２側の上位置
にあり先端が小Ｒで鋭角に形成されている０更に基板４
１には第１．第２成形工具の間の右斜め方向から繰出穴
４２の少し下の第４象限位置に先端を有して第３成形工
具とで線材を挾持する受け工具５４が固定されている。A board 41 on the front of the machine frame that incorporates the wire rod feeding drive mechanism described above.
A guiding tool 45 having a feeding hole 42 coaxially formed with the center line of the wire held between the feed rollers 15 and 19 is protrudingly attached so that its axial position can be adjusted. A first support shaft 44 in a right angle direction shifted from the center of this guide tool 43
A stomach arm 45 is rotatably supported approximately at the center, and a tool holder 46 is mounted at the tip in parallel with the support shaft 44.
is fixed, and the first forming tool 47 has an acute angle at the tip so that the top surface of the tool is at a position below the feeding hole 42 of the guide tool 43 by the radius of the body coil of the tension spring. installed. The fs20 hook arm 48 is similarly attached to the 10th hook arm 45 at a position of 90°, and the second forming tool 50 at the tip of the tool holder 49 has a sloped portion facing the feeding hole 42, and the portion facing the feeding hole 42 is inclined. A molded groove is formed on the sloped surface with a center coincident with the centerline. Further, the 312nd setter arm 51 is parallel to the first setter arm 45 and holds the tool holder 52. The third forming tool 53 is in the opposite position, and the third forming tool 53 has a flat lower surface, is parallel to the first forming tool 47, is located above the wire diameter on the feeding hole 42 side, and has a tip formed at an acute angle with a small radius. 0 further board 4
1 is the 1st. A receiving tool 54 is fixed between the second forming tools and at a fourth quadrant position slightly below the feeding hole 42 from the diagonal right direction, and has a tip and holds the wire between the third forming tool and the third forming tool.
次いでロッカーアームと駆動カムとの関係を第２成形工
具５０の場合を示す第３図について説明する０カム軸２
に固定された第２カム５に接触するカム７オロア６１は
軸６２で枢支されたカムレバー６３に回転可能に支承さ
れ、このカムレバー６３は軸６４に回転可能に支承され
た押しレバー６５と連結部材６６によって連結されてい
る。押しレバー６５の先端はピンによって連結棒６７と
枢結し、連結棒６７の先端が中間レバー６８とビンで枢
結している◇中間レバー６８の他端は第２０ツカ−アー
ム４８の尾端と枢結された連結棒６９と枢結されていて
、ロッカーアーム４８の尾端が機枠に取付けた引張りば
ね７０に引かれカム７オロア６１が第２カム５と常に密
接するようになっている。第２成形工具５０は第２カム
で駆動された第２０ツカ−アーム４８の回転で円弧運動
を画きそのは！頂点の近似直線運動位置で成形溝が繰出
穴４２の前面に進出するように関係づけられている。ま
た第１０ツカ−アーム４５．第３０ツカ−アーム５１も
同様にそれぞれのカムで駆動されたとをは文型線運動位
置で作用位置をとる。第３成形工具５３は後述のボディ
部のコイルの最初の４成形後にコイル巻始めの位置を押
し受け工具５４でコイル成形面より第４６限内でひねっ
て挾持する位置まで進出される。第１成形工具４７は受
け工具５４の下位置で第３成形工具５３の下側とコイル
成形面の手前位置の２位置に進出する。Next, the relationship between the rocker arm and the drive cam will be explained with reference to FIG. 3, which shows the case of the second forming tool 50.
The cam 7 roller 61 that contacts the second cam 5 fixed to the cam 7 is rotatably supported by a cam lever 63 that is pivotally supported by a shaft 62, and this cam lever 63 is connected to a push lever 65 that is rotatably supported by a shaft 64. They are connected by a member 66. The tip of the push lever 65 is pivotally connected to a connecting rod 67 by a pin, and the tip of the connecting rod 67 is pivotally connected to an intermediate lever 68 by a pin ◇The other end of the intermediate lever 68 is the tail end of the 20th lever arm 48 The tail end of the rocker arm 48 is pulled by a tension spring 70 attached to the machine frame, so that the lower 61 of the cam 7 is always in close contact with the second cam 5. There is. The second forming tool 50 makes an arcuate motion by the rotation of the 20th lever arm 48 driven by the second cam. The molding grooves are related to each other so that they advance to the front surface of the feeding hole 42 at the approximate linear movement position of the apex. Also, the 10th lever arm 45. Similarly, the 30th lever arm 51 is driven by its respective cam and assumes the operating position in the linear motion position. After forming the first four coils of the body portion, which will be described later, the third forming tool 53 is advanced to a position where the coil winding start position is twisted and held within the 46th limit from the coil forming surface using the receiving tool 54. The first forming tool 47 advances to two positions: below the receiving tool 54, below the third forming tool 53, and in front of the coil forming surface.
作 用 ばね成形工程を示す第９図を参照して説明する。For production The spring forming process will be explained with reference to FIG. 9.
送りカム３と第１カム４．第２カム５．第３カム６はモ
ーターの回転が減速されて伝えられて同時に回転され、
送りカム３のカム面ア（イ）に扇形歯車付レバー９が旋
回され歯車１２の旋回で一方向クラッチ１１のクラッチ
軸の歯車１４より歯車１７が回転され歯車１８．２１に
より両ローラ軸１６．２０が互に逆方向に回転され送り
ローラー５造る。−力筒２カム５は少しおくれで９７ト
のない２（イ）への旋回で第２０ツカ−アーム４８を旋
回させ、第２成形工具５０が繰出穴４２の前面に進出し
線材と衝合して工程図９の２で第１フックの半円の円弧
口を成形する。第２カム５のリフトの小さい２（四）で
第２成形工具５ｏを後退さム５のリフトのない２（八）
で第２成形工具５゜は進出して線材を衝合させ工程図９
の４のボディ部の最初のコイルを１巻きのシニをｈ？、
形し線材を下方に向け、第２カム５は２（ニ）に位置し
直ちに第２成形工具５０が後退されるとともに、送りカ
ム３も？ （−）となり扇形歯車付レバー９が逆転され
る。この回転は一方向クラッチ１１において滑り、送り
ローラ１５，１９には伝達されず線材の送りが停止され
る。−力筒３カム６は３（イ）よりリフトのないカム面
３（ロ）で第３０ツカ−アーム５１が旋回され第３成形
工具５３が進出して工程図９の５のコイルの巻き始め点
と当接して線材をコイル成形面より右にひねって第４象
限位置で受け工具５４とで挾持する。更に第１カム４が
１ （イ）からの回転でリフ゛トのないカム面１←）に
少しおくれで位置し、第１０ツカ−アーム４５が旋回さ
れ、第１成形工具４７が進出して工程図９の６のコイル
の挾持点Ａより線径分下側の第１フックロに続く直線部
ハを図で左方に押し第３ｔ？：。Feed cam 3 and first cam 4. Second cam5. The third cam 6 is rotated at the same time as the rotation of the motor is transmitted at a reduced speed.
A lever 9 with a sector gear is rotated on the cam surface A (A) of the feed cam 3, and as the gear 12 rotates, the gear 17 is rotated by the gear 14 of the clutch shaft of the one-way clutch 11, and the gears 18 and 21 rotate the two roller shafts 16. 20 are rotated in opposite directions to form a feed roller 5. - The force cylinder 2 cam 5 rotates the 20th lever arm 48 by turning to 2 (A) without 97 points a little later, and the second forming tool 50 advances to the front of the feeding hole 42 and collides with the wire rod. Then, in step 2 of process diagram 9, a semicircular arc opening of the first hook is formed. The second forming tool 5o is retracted when the second cam 5 has a small lift (2) (4) and the cam 5 has a small lift (2 (8)).
Then, the second forming tool 5° advances and abuts the wire rod as shown in process diagram 9.
H? ,
With the shaping wire facing downward, the second cam 5 is positioned at 2 (d), and the second forming tool 50 is immediately retracted, and the feed cam 3 is also moved back. (-), and the lever 9 with sector gear is reversed. This rotation slips in the one-way clutch 11, is not transmitted to the feed rollers 15 and 19, and feed of the wire is stopped. - The force cylinder 3 cam 6 is moved from 3 (a) to the cam surface 3 (b) with no lift, and the 30th lever arm 51 is rotated, the third forming tool 53 advances, and the winding of the coil of 5 in the process drawing 9 begins. The wire rod is twisted to the right from the coil forming surface by contacting the point, and is clamped with the receiving tool 54 at the fourth quadrant position. Furthermore, the first cam 4 is positioned a little later on the cam surface 1←) which has no lift due to the rotation from 1 (a), the 10th locking arm 45 is rotated, and the first forming tool 47 is advanced, as shown in the process diagram. Push the straight part C following the first hook, which is below the clamping point A of the coil 6 of 9 by the wire diameter, to the left in the figure to the 3rd t? :.
形工具５３の下面に沿って９０°以上の角度に曲げる。Bend it at an angle of 90° or more along the lower surface of the shaping tool 53.
第１カム４はリフトの小さい１ （八）に位置して、第
１成形工具４７がコイル成形面より僅かに後退し第３カ
ム６は３（八）で第３成形工具５３を後退させ工程図９
の７となる。この状態で１／１巻きのコイルは線材が送
り出しローラ１５，１９１強く挾持されているためそれ
より先のひねりの復元力でコイル成形面に戻り、また第
１フック直線部ハはスプリングバックにより開き直角と
なって案内具４３の真横を向く。第２カム５が回転しり
７トのないカム面２（ホ）において第２成形工具５０が
進出するとともに送りカム３がカム面１（八）となり線
材を送り出し、第２成形工具５０の成形溝に衝合させボ
ディ部のコイルを案内具４３の側方に向けて成形してい
く。このコイルの最初の１巻〜数巻が進出途中に位置す
る第１成形工具４７端でコイル間の隙間があかないよう
線材の側腹に当接して矯正される。（この動作は必ずし
も必要ではない） 送りカム３が線材を送り出している
間に指令でサーボモータ２２が回転しブー９２３．２５
より一方向クラッチ２４に回転が伝達される。送りカム
３のカム面ｙ（ハ）による扇形歯車付レバー９の回転が
ローラ軸１６に伝えられ歯車２９．２８によりクラッチ
軸２７に伝達されているが、サーボモータ２２の回転が
上昇するにつれ同方向に回転されているクラッチ軸２７
の回転はサーボモータ２２の回転が上回った時点でその
回転が歯車２８．２９を経てローラ軸１６．２０に伝達
され送りローラ１５，１９の早い回転で線材は高速に送
り出されて工程図９の８のボディ部のコイルホを成形す
る。この間一方向クラッチ１１のクラッチ軸１３は滑っ
ていることになる。送りカム３のカムア（八）はサーボ
モータ２２が回転して線材がこの送りにより送り出され
るとまもなくソフトのない１’ （ニ）に位置し送りカ
ム３による回転が停止する。なお受け工具５４の先端位
鳳第３成形工具５３の進出によるコイルのひねり量。The first cam 4 is located at position 1 (8) with a small lift, and the first forming tool 47 is slightly retracted from the coil forming surface, and the third cam 6 is located at position 3 (eight), at which the third forming tool 53 is retracted. Figure 9
7. In this state, the wire of the 1/1 turn coil is strongly clamped by the feed rollers 15, 191, so it returns to the coil forming surface due to the restoring force of the twist ahead of it, and the first hook straight part C opens due to springback. It forms a right angle and faces directly to the side of the guide tool 43. The second forming tool 50 advances at the cam surface 2 (E) where the second cam 5 has no rotation end 7 and the feed cam 3 becomes the cam surface 1 (8) and feeds out the wire, and the forming groove of the second forming tool 50 The coil of the body portion is molded toward the side of the guide tool 43. The first one to several turns of this coil are corrected by coming into contact with the flank of the wire at the end of the first forming tool 47 located on the way out so that there is no gap between the coils. (This operation is not necessarily necessary.) While the feed cam 3 is feeding out the wire, the servo motor 22 rotates in response to a command,
The rotation is more transmitted to the one-way clutch 24. The rotation of the sector geared lever 9 by the cam surface y (c) of the feed cam 3 is transmitted to the roller shaft 16 and then to the clutch shaft 27 by gears 29 and 28, but as the rotation of the servo motor 22 increases, the same The clutch shaft 27 is rotated in the direction
When the rotation of the servo motor 22 exceeds that of the servo motor 22, the rotation is transmitted to the roller shaft 16.20 through the gears 28.29, and the wire rod is sent out at high speed by the fast rotation of the feed rollers 15 and 19, as shown in process drawing 9. Mold the coil ho of the body part 8. During this time, the clutch shaft 13 of the one-way clutch 11 is slipping. As soon as the servo motor 22 rotates and the wire is fed out, the cam (8) of the feed cam 3 is positioned at 1' (d), where there is no soft wire, and the rotation by the feed cam 3 is stopped. The amount of twist of the coil due to the advance of the third forming tool 53 from the tip of the receiving tool 54.
並びに曲げ工具１１１による曲げ量は製作するコイルに
対して実験的に決定しておくものである。The amount of bending by the bending tool 111 is determined experimentally for the coil to be manufactured.
効 果
以上詳述したように本発明はロッカーアーム形のばね製
造装置で引張りばねの独乙式フックを成形するため工程
中に線材の送りを一旦停止し、フィル巻き始め部をひね
った位置で挾持してそのフック側を９０°以上の角度で
折り曲げるようになし、線材のひねりの復元力とスプリ
ングバックによりフィルより９０°曲った独乙式フック
を製作することができ、従来英式フックしかできなかっ
たものに簡単な工具を取付けることによってコストの上
昇が少なく且つ工程数を大巾に増すことなく製作でき装
置の仕様を増大できる効果を有する。Effects As detailed above, the present invention uses a rocker arm type spring manufacturing device to form a single-type hook for a tension spring. By clamping the hook and bending the hook side at an angle of 90 degrees or more, it is possible to produce a Dokutsu-style hook that bends 90 degrees from the fill by using the restoring force of the twist of the wire and springback. By attaching a simple tool to an item that cannot be manufactured, there is an effect that the increase in cost is small and the production can be performed without significantly increasing the number of steps, and the specifications of the device can be increased.
第１図は本発明のロッカーアーム、成形工員並びに受け
工具の関係位置を示す図、第２図は送りｐ−ラ駆動系統
図、第３図はロッカーアームの駆動図、第４図は送りカ
ム図、第５図は第１カムの図、第６図は第２カムの図、
第７図は第３カムの図、第８図は引張りばね成形中の送
りカム２．第２成形工員、第１成が工具、第３成形工具
タイミングを示す図第９図は引張りばねの第１フックか
らボディ部のコイル迄の工程図である。Fig. 1 is a diagram showing the relative positions of the rocker arm, molding worker, and receiving tool of the present invention, Fig. 2 is a feed p-ra drive system diagram, Fig. 3 is a drive diagram of the rocker arm, and Fig. 4 is a feed cam. Figure 5 is a diagram of the first cam, Figure 6 is a diagram of the second cam,
FIG. 7 is a diagram of the third cam, and FIG. 8 is a diagram of the feed cam 2 during tension spring forming. FIG. 9 is a diagram showing the timing of the second forming worker, the first forming tool, and the third forming tool. FIG. 9 is a process diagram from the first hook of the tension spring to the coil of the body part.
Claims (1)
た線材に対して前記案内具の中心よりずれた位置で直角
方向の軸線を中心として規制揺動されるロッカーアーム
端の成形工具が前記送り出された線材の前面に進出した
とき両端フック付引張りばねの第１フック部、ボディ部
のコイル第２フック部を順次成形し他の必要な工具の共
動によつてばねが形成される自動ばね製造装置において
、第１フック若しくは第１フックに続く直線部が形成さ
れたあと、第２成形工具の進出でボディ部のコイルの最
初の一巻きのほぼ１／４を成形した時点において線材の
送りを一旦停止させ、コイルの巻き始め位置を第３成形
工具の進出によつてコイルの成形面よりずれた位置へ線
材をひねるようにして変位させ固定の受け工具とで挾持
し、第１成形工具の進出によつて前記第１フック若しく
は第１フックに続く直線部をコイルの成形面側■の角度
で前記挾持点で屈曲させ、その後第２成形工具を進出さ
せるとともに線材を送り前記成形途中のボディ部のコイ
ルを続いて成形するようにして、前記送り出しローラの
挾持点以後のねじりの復元力と９０°以上の屈曲後のス
プリングバックを利用してコイル面に対してほぼ直角に
屈曲した所望の独乙式フックを形成したことを特徴とす
る引張りばねの独乙式フック成形方法。(1) The forming tool at the end of the rocker arm, which is regulated and oscillated about an axis perpendicular to the wire rod held by the feed roller and fed out from the guide at a position offset from the center of the guide, is fed out. Automatic spring manufacturing in which the first hook part of the tension spring with hooks at both ends and the second hook part of the coil of the body part are sequentially formed when the wire rod is advanced to the front side, and the spring is formed by the cooperation of other necessary tools. In the device, after the first hook or the straight part following the first hook is formed, the feed of the wire is stopped when the second forming tool advances to form approximately 1/4 of the first turn of the coil in the body part. Once the coil is stopped, the third forming tool moves forward to shift the wire rod to a position that is offset from the forming surface of the coil, and the wire is held between a fixed receiving tool, and then the first forming tool is moved. By advancing, the first hook or the straight part following the first hook is bent at the clamping point at an angle (2) toward the forming surface side of the coil, and then the second forming tool is advanced and the wire is sent to the body during the forming process. The desired coil is bent almost perpendicularly to the coil surface by utilizing the torsion restoring force after the clamping point of the delivery roller and the springback after bending over 90 degrees. A method for forming a dokutsu-style hook for a tension spring, which is characterized by forming a dokutsu-style hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14284385A JPS61229434A (en) | 1985-06-29 | 1985-06-29 | German type hook forming method for tension spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14284385A JPS61229434A (en) | 1985-06-29 | 1985-06-29 | German type hook forming method for tension spring |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60070616A Division JPS61229433A (en) | 1985-04-03 | 1985-04-03 | Method and device for continuously and automatically forming tension spring providing german type hook at both ends |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61229434A true JPS61229434A (en) | 1986-10-13 |
| JPH0154141B2 JPH0154141B2 (en) | 1989-11-16 |
Family
ID=15324903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14284385A Granted JPS61229434A (en) | 1985-06-29 | 1985-06-29 | German type hook forming method for tension spring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61229434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145561A (en) * | 2019-06-11 | 2019-08-20 | 福立旺精密机电（中国）股份有限公司 | A kind of multistage power plane scroll spring and its processing unit (plant) and processing method |
-
1985
- 1985-06-29 JP JP14284385A patent/JPS61229434A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145561A (en) * | 2019-06-11 | 2019-08-20 | 福立旺精密机电（中国）股份有限公司 | A kind of multistage power plane scroll spring and its processing unit (plant) and processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0154141B2 (en) | 1989-11-16 |
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