JP2002120022A - Lock groove machining device for stay - Google Patents
Lock groove machining device for stayInfo
- Publication number
- JP2002120022A JP2002120022A JP2001194464A JP2001194464A JP2002120022A JP 2002120022 A JP2002120022 A JP 2002120022A JP 2001194464 A JP2001194464 A JP 2001194464A JP 2001194464 A JP2001194464 A JP 2001194464A JP 2002120022 A JP2002120022 A JP 2002120022A
- Authority
- JP
- Japan
- Prior art keywords
- lock groove
- pipe material
- core
- stay
- groove
- 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
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は車両用のヘッドレス
ト（又はハンドブレーキ用）ステー及びその加工装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest (or handbrake) stay for a vehicle and a processing device therefor.
【０００２】[0002]
【従来の技術】車両用のヘッドレスト装置は、乗員の頭
部を支えるヘッドレスト、ヘッドレストを担持する逆Ｕ
字状のステーと、該ステーを昇降自在に支持するシート
バックレストと、ステーをシートバックレストに固定さ
せるロック装置とを含み、このヘッドレスト装置を構成
するステーは、パイプ材から構成され、その対向脚部に
はロック装置の係止片を受ける複数個の離間した掛止凹
部、即ちロック溝が形成されている。2. Description of the Related Art A headrest device for a vehicle includes a headrest for supporting an occupant's head and an inverted U which carries the headrest.
The stay includes a U-shaped stay, a seat backrest for supporting the stay so as to be able to move up and down, and a lock device for fixing the stay to the seatback rest. The leg is formed with a plurality of spaced-apart locking recesses for receiving locking pieces of the lock device, that is, lock grooves.
【０００３】ロック溝は、ステーの脚部の軸線方向に対
し直角にしてかつロック装置の係止片を受ける立上り部
と、該軸線方向に沿う底部と、該軸線方向に対して傾斜
したテーパ部とから構成される。The lock groove has a rising portion perpendicular to the axial direction of the stay leg and receiving the locking piece of the locking device, a bottom portion along the axial direction, and a tapered portion inclined with respect to the axial direction. It is composed of
【０００４】このようなロック溝の成形は、ロック溝の
深さがロック装置の係止片を強固に受け、ヘッドレスト
をシートバックレストに対して安定した位置付けとする
ものであることから充分な深さをとれるものであること
が必要となる。このため、ステーの素材であるパイプの
肉厚を大とし、ステーに切削加工によりロック溝を形成
することがなされていたが、これはパイプを肉厚にする
ことから重量増となり好ましくない。この切削加工に代
って、薄肉のパイプをプレス加工することによりロック
溝を形成することが提案されている。[0004] Such a lock groove is formed with a sufficient depth because the depth of the lock groove firmly receives the locking piece of the lock device and stably positions the headrest with respect to the seat backrest. It is necessary to be able to take care of it. For this reason, the thickness of the pipe, which is the material of the stay, is increased, and a lock groove is formed in the stay by cutting. However, this is not preferable because the thickness of the pipe is increased, resulting in an increase in weight. Instead of this cutting process, it has been proposed to form a lock groove by pressing a thin pipe.
【０００５】プレス加工によるロック溝の成形例が特開
平８−９０１２５号公報や特開平８−９０１２６号公報
に開示される。この先行例は、ステーを構成する薄肉の
主パイプ材の内部であってかつロック溝を形成する部分
に小径の中子パイプ材を配し、主パイプと中子パイプと
を、ロック溝相当量の膨出部を作るようポンチにてプレ
ス加工し、ファイバーフローの連続状態を維持したロッ
ク溝を提供するものである。これは薄肉の主パイプ材の
使用によるヘッドレストの軽量化を可能にするが、別部
材としての中子パイプの使用は加工コストを増加させ、
又、中子パイプの主パイプに対するゆるみ等が生じ、好
ましい手段ではない。Examples of forming a lock groove by press working are disclosed in JP-A-8-90125 and JP-A-8-90126. In this prior example, a small-diameter core pipe material is arranged inside a thin main pipe material constituting a stay and in a portion forming a lock groove, and the main pipe and the core pipe are separated by a lock groove equivalent amount. And press working with a punch so as to form a bulge portion, thereby providing a lock groove in which a continuous state of the fiber flow is maintained. This enables the weight of the headrest to be reduced by using a thin main pipe material, but the use of a core pipe as a separate member increases the processing cost,
In addition, the core pipe becomes loose with respect to the main pipe, which is not a preferable means.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、中子パイプ
を用いることなくかつプレス加工によりロック溝を成形
したステー及びその加工装置を提供することにより、従
来技術の前述した不具合を解消させることを解決すべき
課題とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art by providing a stay in which a lock groove is formed by press working without using a core pipe and a working device therefor. Is a problem to be solved.
【０００７】[0007]
【課題を解決するための手段】本発明は、前述した課題
を解決するために、基本的には、ロック溝相当の溝部と
軸線方向に平坦面部を有する棒状中子を用いて、ステー
のロック溝加工をする技術的手段を提供する。この技術
的手段の採用は、ステーの素材となるパイプ材内に棒状
中子を挿入し、上下型によりロック溝を成形し、その
後、棒状中子の平坦面部をロック溝と対向させるよう棒
状中子を回転させ、この状態で棒状中子をパイプ材から
引抜くことを可能にする。これにより薄肉のパイプ材
に、パイプ材の真円をくずすことなく、寸法通りのロッ
ク溝を形成し、ロック装置の係止片のロック溝へのかゝ
りを良好とさせ得る。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention basically uses a rod-shaped core having a groove corresponding to a lock groove and a flat surface in the axial direction to lock a stay. Provide technical means for groove processing. The adoption of this technical means is to insert a rod-shaped core into a pipe material serving as a stay material, form a lock groove with an upper and lower mold, and then make the rod-shaped core face the flat surface of the rod-shaped core with the lock groove. The rod is rotated, and in this state, the rod-shaped core can be pulled out of the pipe material. Accordingly, a lock groove having the same size as that of the thin pipe member can be formed in the thin pipe member without breaking the true circle of the pipe member, so that the locking piece of the lock device can be properly fitted to the lock groove.
【０００８】具体的には、本発明は、ステーを構成する
パイプ材内に挿入される棒状の中子を有し、該中子が軸
線方向に延在する平坦面部と、該平坦面部とは異なる側
に位置しかつ断面がステーのロック溝を形成するに適す
る形状の溝部を有することを特徴とするステー用ロック
溝加工装置を提供する。Specifically, the present invention has a rod-shaped core inserted into a pipe material constituting a stay, wherein the core has a flat surface portion extending in the axial direction, and A lock groove processing device for a stay, characterized in that the lock groove processing device is located on a different side and has a cross section having a shape suitable for forming a lock groove of the stay.
【０００９】[0009]
【発明の実施の形態】図１にヘッドレスト装置のスチー
ル製のステー１のロック溝２部分を示す。ステー１は切
削加工不可の薄肉のパイプ材からなり、ロック溝２は、
ステーの軸線方向に対して直交する立上り部３と、軸線
方向の底部４と、軸線方向に傾斜するテーパ部５とから
なる通常の形状のものである。FIG. 1 shows a lock groove 2 of a steel stay 1 of a headrest device. The stay 1 is made of a thin pipe material that cannot be machined, and the lock groove 2 is
The stay has a normal shape including a rising portion 3 orthogonal to the axial direction of the stay, a bottom portion 4 in the axial direction, and a tapered portion 5 inclined in the axial direction.
【００１０】このロック溝２を加工する金型は、図２に
示す如く、上型６と下型７とからなる合せ型８であり、
ステー１の外径に相当する半円形中空部９，９′が合せ
面に形成されており、上型６の中空部９の内周面にロッ
ク溝２に相当する凸部１０が設けられる。As shown in FIG. 2, a die for processing the lock groove 2 is a mating die 8 composed of an upper die 6 and a lower die 7.
Semicircular hollow portions 9, 9 'corresponding to the outer diameter of the stay 1 are formed on the mating surfaces, and a convex portion 10 corresponding to the lock groove 2 is provided on the inner peripheral surface of the hollow portion 9 of the upper die 6.
【００１１】図３に棒状中子１１を示す。スチール製の
棒状中子１１は、ステー１の内径に相当する外径を有
し、ステー１内に挿入可能で、その軸線方向に平坦面部
１２を有す。この平坦面１２と仮相外周面との間の最大
寸法ｌ1 は、ロック溝２の半径内方への膨出量（図６の
寸法ｌ2 に相当）とする。棒状中子１１はロック溝２を
作るに適しかつ周方向に延在する溝部１３を有す。 図
４に示すように、棒状中子１１をステー１を作るパイプ
材内に挿入する。挿入量は、中子１１に付した目印をパ
イプ材端縁に合せることで決める。FIG. 3 shows the rod-shaped core 11. The steel rod-shaped core 11 has an outer diameter corresponding to the inner diameter of the stay 1, is insertable into the stay 1, and has a flat surface portion 12 in the axial direction thereof. The maximum dimension l 1 between the flat surface 12 and the temporary phase outer peripheral surface is the amount of protrusion of the lock groove 2 inward of the radius (corresponding to the dimension l 2 in FIG. 6). The rod-shaped core 11 has a groove 13 suitable for forming the lock groove 2 and extending in the circumferential direction. As shown in FIG. 4, the rod-shaped core 11 is inserted into a pipe material for forming the stay 1. The insertion amount is determined by aligning the mark on the core 11 with the end of the pipe material.
【００１２】棒状中子１１を挿入したパイプ材を下型７
の中空部９′内に配し、棒状中子の溝部１３，１３に上
型６の凸部１０，１０が対向するよう上型６を下型７に
合せて配する。上下型６，７を合せた後、図５に示すよ
うに上型６に圧力Ｐをかけ、凸部１０，１０をパイプ材
に喰い込ませ、パイプ材を塑性加工してロック溝２，２
を形成する。このプレス加工時、棒状中子１１の平坦面
部１２は上型６の凸部１０，１０と対向する位置に配さ
れる。The pipe member into which the rod-shaped core 11 has been inserted is inserted into the lower mold 7.
And the upper mold 6 is arranged along with the lower mold 7 such that the protrusions 10 of the upper mold 6 face the grooves 13 of the rod-shaped core. After the upper and lower dies 6 and 7 are assembled, pressure P is applied to the upper dies 6 as shown in FIG. 5 so that the protrusions 10 and 10 are bitten into the pipe material, and the pipe material is plastically worked to lock the grooves 2 and 2.
To form During this press working, the flat surface portion 12 of the rod-shaped core 11 is arranged at a position facing the convex portions 10, 10 of the upper die 6.
【００１３】ロック溝２，２の加工終了後、棒状中子１
１とパイプ材は型８より外され、棒状中子１１をその平
坦面部１２がロック溝２の半径方向内方への膨出部に対
向させるよう反転させる。次いで、反転した棒状中子１
１を矢印方向へ抜き、ステー１より棒状中子１１を取り
出す。このような成形はロック溝２，２の成形時、中子
１１によりパイプ材が支持されるので、ダレのない寸法
通りのロック溝２，２の成形を可能にする。又、中子１
１はステー１より取り外されるのでステー１の重量を増
加させることはない。After the machining of the lock grooves 2 and 2, the rod-shaped core 1
1 and the pipe material are removed from the mold 8, and the rod-shaped core 11 is inverted so that its flat surface portion 12 faces the radially inward bulging portion of the lock groove 2. Next, the inverted core 1
1 is pulled out in the direction of the arrow, and the rod-shaped core 11 is taken out from the stay 1. In such forming, the pipe 11 is supported by the core 11 at the time of forming the lock grooves 2, so that the lock grooves 2, 2 can be formed according to dimensions without sagging. Also, core 1
Since 1 is detached from the stay 1, the weight of the stay 1 is not increased.
【００１４】図３に示す棒状中子１１を用いて成形され
たロック溝２の底部４の内周面は、棒状中子１１の溝部
１３に沿って塑性変形するので、軸線方向に延在する平
坦面となる。これは立上り部３を軸線方向に直交させこ
の部分のダレを防止させる。The inner peripheral surface of the bottom portion 4 of the lock groove 2 formed by using the rod-shaped core 11 shown in FIG. 3 is plastically deformed along the groove 13 of the rod-shaped core 11 and extends in the axial direction. It becomes a flat surface. This makes the rising portion 3 perpendicular to the axial direction to prevent dripping of this portion.
【００１５】図７に本発明の第二実施例のための型装置
１４を示す。型装置１４は固定下型１５と上型としての
パンチ１６，１７とよりなる。下型１５は一方の側面か
ら他方の側面へと延在しかつステー１のためのパイプ材
を通す貫通孔１８と、該貫通孔１８に対して直交するよ
う穿孔された対のガイド孔１９，２０を有する。貫通孔
１８は内部に中子２１を挿入したパイプ材を通すに適し
た径を有し、ガイド孔１６，１７はパンチ１６，１７の
断面形状に相当する断面形状を有す。FIG. 7 shows a mold device 14 for a second embodiment of the present invention. The mold device 14 includes a fixed lower mold 15 and punches 16 and 17 as upper molds. The lower die 15 extends from one side surface to the other side surface, and has a through hole 18 through which a pipe material for the stay 1 passes, and a pair of guide holes 19, which are formed so as to be orthogonal to the through hole 18. 20. The through hole 18 has a diameter suitable for passing the pipe material into which the core 21 is inserted, and the guide holes 16 and 17 have a cross-sectional shape corresponding to the cross-sectional shape of the punches 16 and 17.
【００１６】図８に、ステー１の内径に相当する大径円
筒部３４と平坦面部１２を有する中子２１に形成され得
る第１と第２の溝部２２，２３の例を示す。第１の溝２
２の断面形状は、パイプ材の内径部に対応する大径円筒
部３４（但し、平坦面部１２の処は切断されている）上
の第１位置３５と、ロック溝３０の底部に対応する小径
円筒部２４（但し、平坦面部１２の処は切断されてい
る）上の第２位置３６とを連続させるように形成された
環状テーパ部２５（但し、平坦面部１２の処は切断され
ている）を有している。そして、第１位置３５は中子の
軸方向においてパイプ材押圧面２８の端部より外側にな
っていて、第２位置３６はパイプ材押圧面２８の端部の
位置と概略一致している。第１の溝２２の両側に対向し
て環状テーパ部２５，２５が形成され、テーパ部２５，
２５は正面視逆八の字状を形作り、又、傾斜角θ1 とな
っている。第２の溝部２３は、小径円筒部２４（但し、
平坦面部１２の処は切断されている）と、傾斜角θ2 の
第１のテーパ部２６と、傾斜角θ3 （θ3 ＞θ2 ）の第
２のテーパ部２７とからなる。第１と第２のテーパ部２
６，２７は平坦面部１２を除いて環状に形成される。FIG. 8 shows an example of first and second grooves 22 and 23 which can be formed in the core 21 having the large-diameter cylindrical portion 34 corresponding to the inner diameter of the stay 1 and the flat surface portion 12. First groove 2
2 has a first position 35 on a large-diameter cylindrical portion 34 corresponding to the inner diameter portion of the pipe material (however, the flat surface portion 12 is cut off) and a small diameter corresponding to the bottom of the lock groove 30. An annular tapered portion 25 formed so as to be continuous with the second position 36 on the cylindrical portion 24 (however, the portion of the flat surface portion 12 is cut) (however, the portion of the flat surface portion 12 is cut). have. The first position 35 is located outside the end of the pipe material pressing surface 28 in the axial direction of the core, and the second position 36 is substantially coincident with the position of the end of the pipe material pressing surface 28. Annular tapered portions 25 are formed on both sides of the first groove 22 so as to face each other.
25 shape the front view inverse truncated reverse V shape, also has a tilt angle theta 1. The second groove 23 is provided with a small-diameter cylindrical portion 24 (however,
Treatment of the flat surface portion 12 and is cut), the first tapered portion 26 of the tilt angle theta 2, an inclined angle θ 3 (θ 3> θ 2 ) a second tapered portion 27. of. 1st and 2nd taper part 2
6 and 27 are formed in an annular shape except for the flat surface portion 12.
【００１７】第１の溝部２２に適するパンチ１６の端面
のパイプ材押圧面２８が平坦面（その幅は小径円筒部２
４の軸線方向の長さに相当）であり、第２の溝部２３に
適合するパンチ１７のパイプ材押圧面２９は、第１のテ
ーパ部２６と対向する側の平坦面（その幅は小径円筒部
２４の軸線方向の長さに相当）と第２のテーパ部２７と
対向する側のテーパ部とを有す。第１の溝部２２を中子
２１の適所に複数個離間して設けても良く、又、第２の
溝部２３を中子２１の適所に複数個離間して設けても良
い。勿論、第１と第２の溝部２２，２３を複数個組合せ
て中子２１に設けても良い。但し、第１の溝部２２に対
してはパンチ１６を用い、第２の溝部２３に対してはパ
ンチ１７を用いる。The pipe material pressing surface 28 at the end surface of the punch 16 suitable for the first groove portion 22 has a flat surface (the width of the small diameter cylindrical portion 2).
4, and the pipe material pressing surface 29 of the punch 17 that fits the second groove portion 23 is a flat surface facing the first taper portion 26 (the width thereof is a small-diameter cylinder). (Corresponding to the length of the portion 24 in the axial direction) and a tapered portion on the side facing the second tapered portion 27. A plurality of first groove portions 22 may be provided at appropriate locations on the core 21, and a plurality of second groove portions 23 may be provided at appropriate locations on the core 21. Of course, the core 21 may be provided by combining a plurality of the first and second groove portions 22 and 23. However, the punch 16 is used for the first groove 22 and the punch 17 is used for the second groove 23.
【００１８】図４に示すように、パイプ材内に中子２１
を挿入し、次いで、中子２１をその内部に挿入したパイ
プ材を下型１５の貫通孔１８内に挿入する。中子２１の
両溝部２２，２３をガイド孔１９，２０に対向させる。
次いで、パンチ１６，１７を下降させ、圧力をパイプ材
に加え、中子２１の溝部２２，２３の形状に応じた塑性
変形部、即ちロック溝を形成する。図９の左側部に示す
ように、パンチ１６と第１の溝部２２との組合せにより
パイプ材に形成された第１のロック溝３０は断面矩形を
なし、対向する側面部は底面部に対し直立し、底面部の
深さはパイプ材の肉厚寸法ｔとほぼ同じ深さとさせ得
る。このように、深さｔの底面部を有する第１のロック
溝３０を、パンチ１６を用いて加工しても、底面部の縁
部３１で亀裂が無く、ステー１の強度の劣化は見られな
い。As shown in FIG. 4, a core 21 is
Then, the pipe member into which the core 21 has been inserted is inserted into the through hole 18 of the lower die 15. Both the groove portions 22 and 23 of the core 21 face the guide holes 19 and 20.
Next, the punches 16 and 17 are lowered, pressure is applied to the pipe material, and a plastically deformed portion corresponding to the shape of the grooves 22 and 23 of the core 21, that is, a lock groove is formed. As shown in the left part of FIG. 9, the first lock groove 30 formed in the pipe material by the combination of the punch 16 and the first groove part 22 has a rectangular cross section, and the opposing side part is upright with respect to the bottom part. However, the depth of the bottom portion can be made substantially the same as the thickness t of the pipe material. As described above, even if the first lock groove 30 having the bottom surface of the depth t is machined using the punch 16, there is no crack at the edge 31 of the bottom surface, and the strength of the stay 1 is deteriorated. Absent.
【００１９】パンチ１７と第２の溝部２３との組合せに
より、パイプ材に形成された第２のロック溝３２は、第
１のロック溝３０の右半分相当の構成とテーパ部３３と
からなる。第２のロック溝３２においても直立する側面
部と小径底面部との交差する縁部３１では材料が程良く
流れ、亀裂の発生が全く見られない。この場合もロック
溝３２の深さをパイプ材の肉厚寸法ｔ相当の深さとさせ
得る。By the combination of the punch 17 and the second groove 23, the second lock groove 32 formed in the pipe material has a configuration corresponding to the right half of the first lock groove 30 and a tapered portion 33. Also in the second lock groove 32, the material flows moderately at the intersecting edge portion 31 where the upright side surface portion and the small-diameter bottom surface portion intersect, and no crack is observed at all. Also in this case, the depth of the lock groove 32 can be set to a depth equivalent to the wall thickness t of the pipe material.
【００２０】ステー１からの中子２１の取り出しは図５
と図６およびその関連説明に記載した手法に従って行え
ばよい。ステー１には、第１又は第２のロック溝３０又
は３２を複数個離間して形成する。勿論、第１と第２の
ロック溝３０，３２を組合せて形成しても良い。図７乃
至図９に示す例では、ロック装置の係止片のかかりのよ
い直立した側面部を有するロック溝３０，３２を形成
し、しかも、その溝の深さをステー１を構成するパイプ
材の肉厚寸法ｔ相当の深さにしたにも拘わらず、その縁
部３１に亀裂のないものとさせ得る。The removal of the core 21 from the stay 1 is shown in FIG.
And the method described in FIG. 6 and the related description. The stay 1 is formed with a plurality of first or second lock grooves 30 or 32 separated from each other. Of course, the first and second lock grooves 30 and 32 may be formed in combination. In the example shown in FIGS. 7 to 9, the lock grooves 30 and 32 having the upright side portions on which the locking pieces of the lock device are easily engaged are formed, and the depth of the grooves is set to the pipe material constituting the stay 1. Despite having a depth equivalent to the wall thickness t, the edge 31 can be made crack-free.
【図１】ロック溝の部分のステーを示す部分正面図であ
る。FIG. 1 is a partial front view showing a stay of a lock groove portion.
【図２】型の断面図である。FIG. 2 is a sectional view of a mold.
【図３】中子の斜視図である。FIG. 3 is a perspective view of a core.
【図４】パイプ材に中子を挿入する状態を示す正面図で
ある。FIG. 4 is a front view showing a state where a core is inserted into a pipe material.
【図５】ロック溝の成形状態を示す断面図である。FIG. 5 is a sectional view showing a molding state of a lock groove.
【図６】パイプ材（ステー）より中子を抜き取る状態を
示す断面図である。FIG. 6 is a sectional view showing a state in which a core is extracted from a pipe material (stay).
【図７】本発明の第二実施例のための型装置を示す斜視
図である。FIG. 7 is a perspective view showing a mold device for a second embodiment of the present invention.
【図８】中子の溝部の例を示す正面図である。FIG. 8 is a front view showing an example of a groove of a core.
【図９】ロック溝の例を示す部分断面図である。FIG. 9 is a partial cross-sectional view illustrating an example of a lock groove.
１ ステー ２，３０，３２ ロック溝 ８，１４ 型 １０ 凸部 １１，２１ 中子 １２ 平坦面部 １３，２２，２３ 溝部 １６，１７ パンチ １８ 貫通孔 １９ ガイド孔 ２４ 小径円筒部 ２５，２６，２７ テーパ部 ２８，２９ パイプ材押圧面 ３１ 縁部 ３４ 大径円筒部 ３５ 第１位置 ３６ 第２位置 DESCRIPTION OF SYMBOLS 1 Stay 2,30,32 Lock groove 8,14 Mold 10 Convex part 11,21 Core 12 Flat surface part 13,22,23 Groove part 16,17 Punch 18 Through hole 19 Guide hole 24 Small diameter cylindrical part 25,26,27 Taper Parts 28, 29 Pipe material pressing surface 31 Edge part 34 Large-diameter cylindrical part 35 First position 36 Second position
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森 正俊 愛知県刈谷市朝日町２丁目１番地 アイシ ン精機株式会社内 (72)発明者 松下 孝 愛知県安城市里町三郎11番地 株式会社久 田工業所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masatoshi Mori 2-1-1 Asahi-cho, Kariya-shi, Aichi Aisin Seiki Co., Ltd. Inside an industrial site
Claims (6)
る棒状の中子を有し、該中子が軸線方向に延在する平坦
面部と、該平坦面部とは異なる側に位置しかつ断面がス
テーのロック溝を形成するに適する形状の溝部を有する
ことを特徴とするステー用ロック溝加工装置。1. A rod-shaped core inserted into a pipe material constituting a stay, wherein the core has an axially extending flat surface portion, and a flat surface portion located on a side different from the flat surface portion and having a cross section. Has a groove having a shape suitable for forming a lock groove of a stay.
せ面に有する上下型の一方の中空部内周面にロック溝に
対応するパイプ材押圧面を備える凸部を有し、該凸部を
パイプ材内に挿入された中子の溝部と対向させるように
してパイプ材と中子を型内に配し、上下型に圧力を加え
てパイプ材にロック溝を成形する請求項１記載のステー
用ロック溝加工装置。2. A vertical portion having a semicircular hollow portion for receiving a pipe material on its mating surface, and a convex portion provided with a pipe material pressing surface corresponding to a lock groove on an inner peripheral surface of one of the hollow portions. The stay according to claim 1, wherein the pipe material and the core are arranged in the mold so as to face the groove portion of the core inserted into the pipe material, and a lock groove is formed in the pipe material by applying pressure to the upper and lower molds. Lock groove processing equipment.
型に設けたガイド孔に沿って可動しかつその端面にロッ
ク溝に対応する凸部を有する上型又はパンチを有し、パ
イプ材内に挿入された中子の溝部をガイド孔と対向させ
かつ上型又はパンチを用いてパイプ材にロック溝を成形
する請求項１記載のステー用ロック溝加工装置。3. A fixed lower die for supporting a pipe material, and an upper die or a punch movable along a guide hole provided in the lower die and having a convex portion corresponding to a lock groove on an end surface thereof. The lock groove processing device for a stay according to claim 1, wherein the groove portion of the core inserted into the pipe material is opposed to the guide hole, and the lock groove is formed in the pipe material using an upper die or a punch.
するパイプ材を通すための貫通孔を有し、ガイド孔が該
貫通孔に直交するよう穿孔されている請求項３記載のス
テー用ロック溝加工装置。4. The stay according to claim 3, wherein the lower mold has a through hole for passing a pipe material penetrating from one side surface to the other side surface, and the guide hole is formed so as to be orthogonal to the through hole. Lock groove processing equipment.
面部をロック溝と対向させるよう反転させ、パイプ材よ
り中子を抜き取り自在とした請求項２又は３記載のステ
ー用ロック溝加工装置。5. The lock groove processing for a stay according to claim 2, wherein after the lock groove is formed in the pipe material, the flat surface portion of the core is inverted so as to face the lock groove, and the core can be removed from the pipe material. apparatus.
プ材の内径部に対応する大径円筒部と、ロック溝の底部
に対応する小径円筒部と、前記中子の軸方向においてパ
イプ材押圧面の端部より外側の第１位置と該端部である
第２位置との間に前記大径円筒部と前記小径円筒部とを
連続させるテーパ部を有している請求項２又は３記載の
ステー用ロック溝加工装置。6. The cross-sectional shape of the groove of the core includes a large-diameter cylindrical portion corresponding to the inner diameter portion of the pipe material, a small-diameter cylindrical portion corresponding to the bottom of the lock groove, and a pipe in the axial direction of the core. 3. A tapered portion which connects the large-diameter cylindrical portion and the small-diameter cylindrical portion between a first position outside an end of the material pressing surface and a second position being the end. The lock groove processing device for a stay according to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001194464A JP2002120022A (en) | 2000-08-11 | 2001-06-27 | Lock groove machining device for stay |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000243878 | 2000-08-11 | ||
| JP2000-243878 | 2000-08-11 | ||
| JP2001194464A JP2002120022A (en) | 2000-08-11 | 2001-06-27 | Lock groove machining device for stay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002120022A true JP2002120022A (en) | 2002-04-23 |
Family
ID=26597805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001194464A Pending JP2002120022A (en) | 2000-08-11 | 2001-06-27 | Lock groove machining device for stay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002120022A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005219067A (en) * | 2004-02-03 | 2005-08-18 | Soowa Techno:Kk | Notch press forming core of head rest stay |
| JP2005219068A (en) * | 2004-02-03 | 2005-08-18 | Soowa Techno:Kk | Notch press forming core of head rest stay |
| CZ297739B6 (en) * | 2003-04-30 | 2007-03-21 | Brano A. S. | Device for making grooves, particularly arresting grooves in tubes of headrest frames for automobile seats |
| JP2008087067A (en) * | 2006-10-05 | 2008-04-17 | Sankei Kogyo Kk | Method of working metallic pipe |
| KR101201884B1 (en) | 2010-08-16 | 2012-11-15 | 케이에스베일러주식회사 | Foreign body mixing prevention method and solids manufactured by the method scrap |
| JP2013123735A (en) * | 2011-12-14 | 2013-06-24 | Oda Gisho:Kk | Method for shaping groove of pipe material |
| CN117299959A (en) * | 2023-11-30 | 2023-12-29 | 宁波宏科汽车部件有限公司 | Machining equipment for automobile beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0311858A (en) * | 1989-06-09 | 1991-01-21 | Nec Corp | Dial transmission device |
| JPH08281341A (en) * | 1995-04-14 | 1996-10-29 | Ikeda Bussan Co Ltd | Method and device for working recess on pipe |
| JP2000197922A (en) * | 1998-12-25 | 2000-07-18 | Tk:Kk | Core and device for forming recessed part of hollow shaft, and method for forming recessed part |
-
2001
- 2001-06-27 JP JP2001194464A patent/JP2002120022A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0311858A (en) * | 1989-06-09 | 1991-01-21 | Nec Corp | Dial transmission device |
| JPH08281341A (en) * | 1995-04-14 | 1996-10-29 | Ikeda Bussan Co Ltd | Method and device for working recess on pipe |
| JP2000197922A (en) * | 1998-12-25 | 2000-07-18 | Tk:Kk | Core and device for forming recessed part of hollow shaft, and method for forming recessed part |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ297739B6 (en) * | 2003-04-30 | 2007-03-21 | Brano A. S. | Device for making grooves, particularly arresting grooves in tubes of headrest frames for automobile seats |
| JP2005219067A (en) * | 2004-02-03 | 2005-08-18 | Soowa Techno:Kk | Notch press forming core of head rest stay |
| JP2005219068A (en) * | 2004-02-03 | 2005-08-18 | Soowa Techno:Kk | Notch press forming core of head rest stay |
| JP2008087067A (en) * | 2006-10-05 | 2008-04-17 | Sankei Kogyo Kk | Method of working metallic pipe |
| KR101201884B1 (en) | 2010-08-16 | 2012-11-15 | 케이에스베일러주식회사 | Foreign body mixing prevention method and solids manufactured by the method scrap |
| JP2013123735A (en) * | 2011-12-14 | 2013-06-24 | Oda Gisho:Kk | Method for shaping groove of pipe material |
| CN117299959A (en) * | 2023-11-30 | 2023-12-29 | 宁波宏科汽车部件有限公司 | Machining equipment for automobile beam |
| CN117299959B (en) * | 2023-11-30 | 2024-03-08 | 宁波宏科汽车部件有限公司 | Machining equipment for automobile beam |
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