JPH05293555A - Device for manufacturing forming rail - Google Patents
Device for manufacturing forming railInfo
- Publication number
- JPH05293555A JPH05293555A JP4104428A JP10442892A JPH05293555A JP H05293555 A JPH05293555 A JP H05293555A JP 4104428 A JP4104428 A JP 4104428A JP 10442892 A JP10442892 A JP 10442892A JP H05293555 A JPH05293555 A JP H05293555A
- Authority
- JP
- Japan
- Prior art keywords
- plate material
- die
- laser beam
- bending
- width direction
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
- B66B19/002—Mining-hoist operation installing or exchanging guide rails
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はフォーミングレールの製
造装置に関するものであり、特に、エレベータ用ガイド
レールを形成すべく、ロール状のダイスを使用して板材
を所望形状に曲げ加工するための装置の改良に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forming rail manufacturing apparatus, and more particularly to an apparatus for bending a plate material into a desired shape by using a roll-shaped die to form an elevator guide rail. Related to the improvement of.
【０００２】[0002]
【従来の技術】従来のこの種のフォーミングレールとし
て、特開平２−４８３９０号公報に掲載の技術を挙げる
ことができる。図３はフォーミングレールの一例を示す
正面図である。2. Description of the Related Art As a conventional forming rail of this type, there is a technique disclosed in Japanese Patent Application Laid-Open No. 2-48390. FIG. 3 is a front view showing an example of the forming rail.
【０００３】図において、１はエレベータ用ガイドレー
ルを構成するフォーミングレールであって、１ａ，１ｂ
はガイドシューを介してかご室（いずれも図示略）の前
後方向の荷重を受ける前後一対のレール側部、１ｃは両
レール側部１ａ，１ｂ間を内方に彎曲され、かご室の左
右方向の荷重を受ける頂部であって、両レール側部１
ａ，１ｂ及び頂部１ｃによりかご室を昇降案内するよう
になっている。１ｄ，１ｅは各レール側部１ａ，１ｂに
直交して延びる底部であって、昇降路内でガイドレール
とガイドレールとを連結する場合に、前記底部１ｄ，１
ｅに当て板が当てられる。１ｆ，１ｇは前記各レール側
部１ａ，１ｂと頂部１ｃとの間に形成される密着曲げ部
である。In the drawing, reference numeral 1 is a forming rail which constitutes an elevator guide rail, and is formed by 1a and 1b.
Is a pair of front and rear rail side parts 1c, which receive the load in the front and rear direction of the cab through the guide shoes, and 1c is curved inward between the rail side parts 1a and 1b, and the left and right direction of the cab is Is the top part that receives the load of both rail side parts 1
The a, 1b and the top 1c guide the cab up and down. Reference numerals 1d and 1e denote bottom portions extending orthogonally to the rail side portions 1a and 1b, and when the guide rails are connected to each other in the hoistway, the bottom portions 1d and 1e are provided.
A backing plate is applied to e. Reference numerals 1f and 1g are closely bent portions formed between the rail side portions 1a and 1b and the top portion 1c.
【０００４】次に、上記のように構成された従来のフォ
ーミングレールの製造方法を説明する。フォーミングレ
ールの素材としては、冷間または熱間で圧延加工された
板材を必要幅に切断し、コイル状に巻いたものを使用す
るのが一般的である。また、フォーミングレールを図３
に示すような彎曲部を有する所定の断面形状に形成する
製造装置としては、前記所定の断面形状に対応して、ダ
イスを所定位置に多段に配置したものが使用される。そ
して、冷間または熱間で、板材をダイス間を通過させる
ことにより、板材がダイス間で前記所定の断面形状に連
続的に曲げ加工される。なお、かかる製造装置として
は、設備費が安く、製品の仕上りも良好なことから、冷
間曲げ加工を行なう成形機が広く採用されている。この
成形機による冷間曲げ加工は、多段に配置されたロール
状のダイスにより行なわれ、断面形状の複雑さに応じ
て、数段から十数段の曲げ工程が組合わされる。なお、
曲げ工程の段数は、曲げに要する荷重の大きさ、ストロ
ーク、レール素材の延び特性等から決定される。Next, a method of manufacturing the conventional forming rail having the above structure will be described. As a material of the forming rail, it is general to use a plate material rolled cold or hot, cut into a required width, and wound into a coil. In addition, the forming rail is shown in Fig. 3.
As a manufacturing apparatus for forming a predetermined cross-sectional shape having a curved portion as shown in (1), a die in which multiple dies are arranged at predetermined positions corresponding to the predetermined cross-sectional shape is used. Then, by passing the plate material between the dies cold or hot, the plate material is continuously bent into the predetermined sectional shape between the dies. As such a manufacturing apparatus, a molding machine that performs cold bending is widely used because of low equipment cost and good product finish. The cold bending process by this forming machine is performed by roll-shaped dies arranged in multiple stages, and several stages to several tens of stages are combined depending on the complexity of the sectional shape. In addition,
The number of steps in the bending process is determined by the magnitude of the load required for bending, the stroke, the extension characteristics of the rail material, and the like.
【０００５】[0005]
【発明が解決しようとする課題】従来のフォーミングレ
ールの製造装置は、上記のように構成されているから、
板材を冷間で曲げ加工する装置を使用した場合、多段の
曲げ工程を要するだけでなく、冷間により板材を曲げ加
工するため、各ダイスに大きな荷重が加わり、ダイスが
欠損したり、摩耗したりして、その寿命が短くなる。ま
た、フォーミングレールの彎曲部の曲率を小さくする場
合、その彎曲部の外側に割れが生じ易い。特に、板材の
密着曲げを行なう場合、例えば、図３に示す密着曲げ部
１ｆ，１ｇを形成する場合には、板材の素材として高価
な材料を使用しても、密着曲げ部１ｆ，１ｇの外側部に
毛割れまたは肌荒れ等を生じる可能性がある。一方、板
材を熱間で曲げ加工する装置を使用した場合は、板材の
延性を増大して、その曲げ加工を容易に行なうことがで
きるが、板材の熱が直接ダイスに伝導され、ダイスが軟
化等して、その寿命が短くなる。Since the conventional forming rail manufacturing apparatus is configured as described above,
When a device for bending a plate material is used cold, not only a multi-step bending process is required, but also because the plate material is bent by cold processing, a large load is applied to each die and the die is damaged or worn. Or, the life is shortened. Further, when the curvature of the curved portion of the forming rail is reduced, cracks are likely to occur on the outer side of the curved portion. In particular, when performing close contact bending of the plate material, for example, when forming the close contact bending portions 1f and 1g shown in FIG. 3, even if an expensive material is used as the material of the plate material, the outside of the close contact bending portions 1f and 1g is There is a possibility that hair cracks or rough skin may occur on the part. On the other hand, if a device that bends the plate material is used, the ductility of the plate material can be increased and the bending process can be performed easily, but the heat of the plate material is directly transmitted to the die and the die softens. As a result, its life is shortened.
【０００６】そこで、本発明は、板材の曲げ加工時の荷
重を軽減できるとともに、安価な材料で密着曲げを行な
うことができるフォーミングレールの製造装置の提供を
課題とするものである。[0006] Therefore, an object of the present invention is to provide a forming rail manufacturing apparatus capable of reducing the load during bending of a plate material and performing contact bending with an inexpensive material.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明にかかる
フォーミングレールの製造装置は、搬送される板材の幅
方向所定位置の表面を熱源により局所的に加熱し、前記
板材の前記幅方向所定位置の前記加熱された表面以外の
面をダイスにより押圧して、前記幅方向所定位置を境に
して前記板材を曲げ加工し、前記板材を彎曲部を有する
所定断面形状に連続的に成形するものである。According to a first aspect of the present invention, there is provided a forming rail manufacturing apparatus which locally heats a surface of a conveyed plate material at a predetermined position in the width direction by a heat source to predetermined the width direction of the plate material. A surface other than the heated surface at a position is pressed by a die to bend the plate material at the predetermined position in the width direction and continuously form the plate material into a predetermined cross-sectional shape having a curved portion. Is.
【０００８】請求項２の発明にかかるフォーミングレー
ルの製造装置は、搬送される板材の幅方向所定位置の表
面にレーザービーム発振手段からレーザービームを照射
して、前記表面を局所的に加熱するとともに、前記レー
ザービーム発振手段からの前記レーザービームが照射さ
れる前記板材の前記表面に、不活性ガス供給手段から不
活性ガスを供給して、前記板材の前記表面の周囲を外気
からシールドし、前記板材の前記幅方向所定位置の前記
加熱された表面以外の面をダイスにより押圧して、前記
幅方向所定位置を境にして前記板材を曲げ加工し、前記
板材を彎曲部を有する所定断面形状に連続的に成形する
ものである。In the forming rail manufacturing apparatus according to the second aspect of the present invention, the surface of the conveyed plate material at a predetermined position in the width direction is irradiated with a laser beam from the laser beam oscillating means to locally heat the surface. The surface of the plate material irradiated with the laser beam from the laser beam oscillating means is supplied with an inert gas from an inert gas supply means to shield the periphery of the surface of the plate material from outside air, A surface other than the heated surface at a predetermined position in the width direction of the plate material is pressed by a die, and the plate material is bent at a predetermined position in the width direction, and the plate material is formed into a predetermined cross-sectional shape having a curved portion. It is formed continuously.
【０００９】[0009]
【作用】請求項１の発明においては、ダイスによる成形
に際して、板材の彎曲部となる部分のみを曲げ加工の前
に熱源により加熱するため、板材の彎曲部となる部分の
みが軟化してその延性が増加する。したがって、小さい
荷重で板材の彎曲部の曲げ加工を容易に行なうことがで
き、かつ、彎曲部の曲率が小さい場合でも、彎曲部に毛
割れや肌荒れ等が生じることはない。また、熱源はダイ
スが接触しない板材の幅方向所定位置の表面のみを局所
的に加熱するため、板材の熱がダイスに伝導されること
がない。According to the invention of claim 1, since only the curved portion of the plate material is heated by the heat source before bending when forming with the die, only the curved portion of the plate material is softened and its ductility is increased. Will increase. Therefore, the bending of the curved portion of the plate material can be easily performed with a small load, and even if the curved portion has a small curvature, hair bending or rough skin does not occur in the curved portion. Further, since the heat source locally heats only the surface of the plate material at a predetermined position in the width direction which the die does not contact, the heat of the plate material is not conducted to the die.
【００１０】請求項２の発明においては、ダイスによる
成形に際して、板材の彎曲部となる部分のみを曲げ加工
の直前にレーザービームにより加熱するため、板材の彎
曲部となる部分のみが軟化してその延性が増加する。し
たがって、小さい荷重で板材の彎曲部の曲げ加工を容易
に行なうことができ、かつ、彎曲部の曲率が小さい場合
でも、彎曲部に毛割れや肌荒れ等が生じることはない。
また、レーザービームは、ダイスが接触しない板材の幅
方向所定位置の表面を、局所的に、かつ、高密度で加熱
するため、板材は幅方向所定位置の表面のみ急速に加熱
されて、曲げ加工後は、板材の全面に放散して板材が急
速に冷却される。そして、レーザービームが照射される
板材の彎曲部となる部分は、不活性ガスにより周囲を外
気からシールドされているので、板材の彎曲部の加熱面
の酸化による肌荒れ等の不都合を防止できる。According to the second aspect of the present invention, since only the curved portion of the plate material is heated by the laser beam immediately before bending when forming with a die, only the curved portion of the plate material is softened. Ductility increases. Therefore, the bending of the curved portion of the plate material can be easily performed with a small load, and even if the curved portion has a small curvature, hair bending or rough skin does not occur in the curved portion.
In addition, since the laser beam locally and at high density heats the surface of the plate material at a predetermined position in the width direction, which the die does not contact, the plate material is rapidly heated only at the surface at the predetermined position in the width direction, and the bending process is performed. After that, the plate material is diffused over the entire surface and the plate material is rapidly cooled. Further, since the surrounding portion of the curved portion of the plate material that is irradiated with the laser beam is shielded from the outside air by the inert gas, it is possible to prevent the inconvenience such as rough skin due to the oxidation of the heating surface of the curved portion of the plate material.
【００１１】[0011]
【実施例】以下、本発明の実施例を説明する。EXAMPLES Examples of the present invention will be described below.
【００１２】図１は本発明の一実施例のフォーミングレ
ールの製造装置の頂部ダイス及び側部ダイスの正面図、
図２は一実施例のフォーミングレールの製造装置の頂部
ダイス及び側部ダイスの側面図である。FIG. 1 is a front view of a top die and a side die of a forming rail manufacturing apparatus according to an embodiment of the present invention,
FIG. 2 is a side view of the top die and the side die of the forming rail manufacturing apparatus according to the embodiment.
【００１３】なお、図中、従来例と同一符号及び同一記
号は、従来例の構成部分と同一または相当部分を示すも
のであるから、ここでは、重複する説明を省略する。It should be noted that, in the drawings, the same reference numerals and symbols as those of the conventional example indicate the same or corresponding parts as those of the conventional example, and therefore, redundant description will be omitted.
【００１４】図１において、２は所定位置に垂直状態で
配置された頂部ダイス、３は頂部ダイス２の両側面に対
向して水平状態で配置された一対の側部ダイスである。
頂部ダイス２及び両側部ダイス３は、フォーミングレー
ル１の密着曲げ部１ｆ，１ｇ以外の部分を押圧する。即
ち、本実施例では、頂部ダイス２の両側面及び両側部ダ
イス３の外周面間には所定の間隙が形成され、頂部ダイ
ス２及び側部ダイス３が、その間隙を通過するフォーミ
ングレール１形成用の板材の表面を転動押圧して曲げ加
工する。また、頂部ダイス２及び側部ダイス３の手前側
の所定位置には、多段に別のダイス（図示略）が配設さ
れ、フォーミングレール１形成用の板材を徐々に図３に
示す形状と近似の形状へと全体的に曲げ加工し、最終的
に、頂部ダイス２及び側部ダイス３により、密着曲げ部
１ｆ，１ｇを有するフォーミングレール１を得るように
している。In FIG. 1, 2 is a top die which is vertically arranged at a predetermined position, and 3 is a pair of side dies which are horizontally arranged so as to face both side surfaces of the top die 2.
The top die 2 and the both side dies 3 press the portions of the forming rail 1 other than the closely bent portions 1f and 1g. That is, in this embodiment, a predetermined gap is formed between the both side surfaces of the top die 2 and the outer peripheral surfaces of the both side dies 3, and the top die 2 and the side die 3 form the forming rail 1 that passes through the gap. The surface of the plate material for rolling is pressed by rolling to be bent. Further, another die (not shown) is arranged in multiple stages at predetermined positions on the front side of the top die 2 and the side die 3, and the plate material for forming the forming rail 1 is gradually approximated to the shape shown in FIG. Then, the forming rail 1 having the tightly bent portions 1f and 1g is finally obtained by the top die 2 and the side die 3.
【００１５】４は公知のレーザービーム発振手段から発
振されるレーザービーム、５はレーザービーム発振手段
からのレーザービーム４を集束して、板材の所定位置に
照射する集光レンズ、６は集光レンズ５を介してレーザ
ービーム４が照射される板材の加熱部である。本実施例
では、加熱部６は、板材の彎曲部としての密着曲げ部１
ｆ，１ｇの外側面であって、前記頂部ダイス２及び側部
ダイス３より、板材の搬送方向の直前位置に設定されて
いる。なお、前記レーザービーム発振手段及び集光レン
ズ５により本実施例の熱源が構成されている。また、レ
ーザービーム発振手段の出力は、フォーミングレール１
形成用の板材の質量及び加工時の搬送速度等により決定
されるが、板材の表面を６００乃至８００℃前後に加熱
できる程度のものが好適であると考えられる。７は前記
板材の加熱部６に対向して配置された公知のシールドガ
ス供給手段のノズル、８はノズル７から前記加熱部６に
向けて噴出されるシールドガスとしての不活性ガスであ
る。Reference numeral 4 is a laser beam oscillated from a known laser beam oscillating means, 5 is a condenser lens for converging the laser beam 4 from the laser beam oscillating means and irradiating the laser beam 4 at a predetermined position on the plate material, and 6 is a condenser lens. It is a heating part of the plate material to which the laser beam 4 is irradiated via 5. In the present embodiment, the heating section 6 is the contact bending section 1 as the bending section of the plate material.
It is an outer side surface of f and 1g, and is set at a position immediately before the top die 2 and the side die 3 in the sheet material conveying direction. The laser beam oscillating means and the condenser lens 5 constitute the heat source of this embodiment. The output of the laser beam oscillating means is the forming rail 1
Although it is determined by the mass of the plate material for forming, the transport speed during processing, etc., it is considered preferable that the surface of the plate material can be heated to about 600 to 800 ° C. Reference numeral 7 is a nozzle of a known shield gas supply means arranged so as to face the heating portion 6 of the plate material, and 8 is an inert gas as a shield gas ejected from the nozzle 7 toward the heating portion 6.
【００１６】次に、上記のように構成された本実施例の
フォーミングレールの製造装置を使用したフォーミング
レールの製造方法を説明する。Next, a method of manufacturing a forming rail using the forming rail manufacturing apparatus of this embodiment having the above-described structure will be described.
【００１７】まず、フォーミングレール１の素材である
板材には、一般構造用圧延鋼板が広く用いられる。一般
構造用圧延鋼板の機械的特性値は、降伏点が２４５Ｎ／
mm2以上、伸び率が２１％以上である旨、ＪＩＳで規定
されている。かかる一般構造用圧延鋼板を本実施例のフ
ォーミングレールの製造装置により搬送して、搬送方向
（図２中矢印Ｔ方向）の手前側のダイスから順に通過さ
せ、多段に配設されたダイスにより徐々に全体的に曲げ
加工する。しかし、一般構造用圧延鋼板は、多段のダイ
スを通過する間に加工硬化を生じるため、その伸び率が
低下して、頂部ダイス２及び側部ダイス３による曲げ加
工によって、密着曲げ部１ｆ，１ｇ部分の特に外側が割
れ易くなることが考えられる。一方、一般構造用圧延鋼
板の伸び特性は、加熱による温度上昇に伴なって回復、
向上し、伸び易くなることが知られている。そこで、一
般構造用圧延鋼板が、頂部ダイス２及び側部ダイス３間
で曲げ加工される直前に、一般構造用圧延鋼板の密着曲
げ部１ｆ，１ｇに対応する加熱部６を、レーザービーム
発振手段からのレーザービーム４によって加熱、軟化さ
せる。その後、加熱部６が軟化された一般構造用圧延鋼
板板材を、頂部ダイス２及び側部ダイス３間を通過させ
ることにより、図３に示す断面形状のフォーミングレー
ル１が得られる。First, as a plate material of the forming rail 1, a general structural rolled steel plate is widely used. The mechanical property value of rolled steel sheet for general structure has a yield point of 245 N /
The JIS stipulates that the elongation is mm 2 or more and the elongation is 21% or more. The rolled steel plate for general structure is conveyed by the forming rail manufacturing apparatus of the present embodiment, passed sequentially from the die on the front side in the conveying direction (direction of arrow T in FIG. 2), and gradually passed by dies arranged in multiple stages. Bend all over. However, since the rolled steel sheet for general structure undergoes work hardening during passing through multiple dies, its elongation rate is reduced, and by the bending work by the top die 2 and the side dies 3, the tight bend portions 1f, 1g are bent. It is conceivable that the outer side of the part may be easily cracked. On the other hand, the elongation properties of rolled steel sheets for general structure recover with the temperature rise due to heating,
It is known that it improves and becomes easy to stretch. Therefore, immediately before the rolled rolled steel sheet for general structure is bent between the top die 2 and the side die 3, the heating portion 6 corresponding to the closely bent portions 1f and 1g of the rolled steel sheet for general structure is provided with a laser beam oscillating means. Is heated and softened by the laser beam 4. After that, the rolled steel sheet for general structure having the heating portion 6 softened is passed between the top die 2 and the side die 3 to obtain the forming rail 1 having the cross-sectional shape shown in FIG.
【００１８】なお、一般構造用圧延鋼板を全面にわたっ
て加熱しておき、頂部ダイス２及び側部ダイス３間を通
過させることも考えられるが、この場合、頂部ダイス２
及び側部ダイス３自体が、一般構造用圧延鋼板の加熱面
に直接圧接されて、その熱により高温化することによ
り、軟化したり、その寿命が低下したりする可能性があ
るため、本発明では、一般構造用圧延鋼板を局所的に加
熱することとしたものである。It is also possible to heat the rolled general structural steel sheet over the entire surface and pass it between the top die 2 and the side dies 3. In this case, the top die 2 is used.
Since the side dies 3 themselves are directly brought into pressure contact with the heating surface of the general structural rolled steel sheet and the temperature thereof is raised by the heat, the side die 3 may be softened or its life may be shortened. Then, the general structural rolled steel sheet is locally heated.
【００１９】このように、上記実施例のフォーミングレ
ールの製造装置は、搬送される板材を、多段に配置され
たダイス及び頂部ダイス２及び一対の側部ダイス３によ
り、レール側部１ａ，１ｂと頂部１ｃとの間に密着曲げ
部１ｆ，１ｇを有する所定断面形状に連続的に成形する
ものであって、搬送される板材の加熱部６の表面にレー
ザービーム発振手段から集光レンズ５を介してレーザー
ビーム４を照射して、前記加熱部６の表面を局所的に加
熱するとともに、前記レーザービーム発振手段からの前
記レーザービーム４が照射される前記板材の前記加熱部
６の表面に、不活性ガス供給手段のノズル７から不活性
ガス８を供給して、前記板材の前記加熱部６の表面の周
囲を外気からシールドし、前記板材の前記加熱部６の表
面以外の面である頂部１ｃ内側面及びレール側部１ａ，
１ｂの外側面を、頂部ダイス２及び側部ダイス３により
押圧して、前記加熱部６を境にして前記板材を曲げ加工
し、前記板材を密着曲げ部１ｆ，１ｇを有する所定断面
形状に連続的に成形するものである。As described above, in the forming rail manufacturing apparatus of the above-described embodiment, the conveyed plate material is divided into the rail side portions 1a and 1b by the dies arranged in the multistage and the top die 2 and the pair of side dies 3. A continuous cross-section is formed into a predetermined cross-sectional shape having close-contact bent portions 1f and 1g between the top portion 1c, and the surface of the heating portion 6 of the plate material to be conveyed is fed from the laser beam oscillating means through the condenser lens 5. Laser beam 4 to locally heat the surface of the heating unit 6, and the surface of the heating unit 6 of the plate member irradiated with the laser beam 4 from the laser beam oscillating means is not heated. An inert gas 8 is supplied from the nozzle 7 of the active gas supply means to shield the periphery of the surface of the heating portion 6 of the plate material from the outside air, and is a surface other than the surface of the heating portion 6 of the plate material. Part 1c inner surface and rail side 1a,
The outer side surface of 1b is pressed by the top die 2 and the side die 3 to bend the plate material with the heating portion 6 as a boundary, and the plate material is continuously formed into a predetermined cross-sectional shape having closely bent portions 1f and 1g. It is to be molded as desired.
【００２０】したがって、上記実施例は、頂部ダイス２
及び側部ダイス３による成形に際して、板材の密着曲げ
部１ｆ，１ｇとなる部分である加熱部６のみを曲げ加工
の直前にレーザービーム４により加熱するため、板材の
密着曲げ部１ｆ，１ｇとなる部分が軟化してその延性が
増加する。したがって、小さい荷重で板材の密着部１
ｆ，１ｇの曲げ加工を容易に行なうことができ、かつ、
密着部１ｆ，１ｇの曲率が小さい場合でも、密着部１
ｆ，１ｇに毛割れや肌荒れ等が生じることはない。その
結果、安価な材料で密着曲げを行なうことができるとと
もに、製品不良を防止することができるとともに、生産
性を向上することができる。また、レーザービーム４
は、頂部ダイス２及び側部ダイス３が接触しない板材の
加熱部６の表面を、局所的に、かつ、高密度で加熱する
ため、板材は加熱部６の表面のみ急速に加熱されて、曲
げ加工後は、板材の全面に放散して板材が急速に冷却さ
れる。その結果、板材の熱が加熱面と反対側の面または
別の位置に伝導されることはないため、板材の熱が頂部
ダイス２若くは側部ダイス３、または他の前段のダイス
に伝導されることはなく、ダイスの加熱による軟化等の
不都合を防止できる。Therefore, in the above embodiment, the top die 2
When forming with the side dies 3, only the heating portion 6 which is the contact bending portions 1f and 1g of the plate material is heated by the laser beam 4 immediately before the bending work, so that the contact bending portions 1f and 1g of the plate material are formed. The part softens and its ductility increases. Therefore, with a small load, the contact portion 1 of the plate material
Bending of f and 1g can be easily performed, and
Even if the contact portions 1f and 1g have a small curvature, the contact portion 1
There is no hair cracking or rough skin on f and 1g. As a result, it is possible to perform contact bending with an inexpensive material, prevent product defects, and improve productivity. Also, laser beam 4
Heats the surface of the heating part 6 of the plate material that the top die 2 and the side dies 3 do not contact locally and at high density, so that the plate material is rapidly heated only on the surface of the heating part 6 and is bent. After processing, the plate material is diffused over the entire surface and the plate material is cooled rapidly. As a result, the heat of the plate material is not conducted to the surface opposite to the heating surface or another position, so that the heat of the plate material is conducted to the top die 2 or the side die 3, or another preceding die. Therefore, it is possible to prevent inconvenience such as softening due to heating of the die.
【００２１】特に、レーザービーム４は、急速な加熱を
可能とするため、板材の密着曲げ部１ｆ，１ｇとなる部
分の表裏に急な温度勾配を生じ、板材の加熱部６面側の
みを局所的に急速に高温状態にできる。その結果、板材
の加熱部６面側と反対側の面側である、密着曲げ部１
ｆ，１ｇとなる部分の内側面側の温度上昇を抑えること
ができる。よって、頂部ダイス２及び側部ダイス３の前
段には、フォーミングレール１の密着曲げ部１ｆ，１ｇ
となる部分の内側に当接して、密着曲げ部１ｆ，１ｇの
前段の彎曲部分を形成するダイスが配置されるが、レー
ザービーム４による加熱は、板材の外側面のみに加えら
れ、前記ダイスが位置する内側面側までは殆ど伝導され
ないため、前記ダイスが熱により軟化等の不都合を生じ
ることもない。また、レーザービーム４は板材の加熱部
６のみ、即ち、１点のみに照射され、他の部分は加熱さ
れることがないため、板材の曲げ加工後は、その熱は板
材の内部にこもることなく板材の全面に速かに放散し
て、板材自身の温度は殆ど上昇しない。なお、レーザー
ビーム４を板材の加熱部６のみに照射した場合でも、前
段のダイス部分において、板材の曲げ加工部分に割れ等
の不都合が生じることはない。そして、レーザービーム
４が照射される板材の加熱部６は、不活性ガス８により
周囲を外気からシールドされているので、板材の加熱部
６の加熱面の酸化による肌荒れ等の不都合を防止でき
る。その結果、フォーミングレール１の製品品質を一層
向上することができる。In particular, since the laser beam 4 enables rapid heating, a steep temperature gradient is generated on the front and back of the portions of the plate material which are the intimately bent portions 1f and 1g, and only the heating portion 6 side of the plate material is locally localized. The temperature can be rapidly increased rapidly. As a result, the contact bending part 1 which is the surface side opposite to the heating part 6 surface side of the plate material.
It is possible to suppress the temperature rise on the inner surface side of the portion of f and 1 g. Therefore, in front of the top die 2 and the side die 3, the closely bent portions 1f and 1g of the forming rail 1 are provided.
A die for contacting with the inside of the portion to be formed and forming a curved portion in the front stage of the tightly bent portions 1f and 1g is arranged, but heating by the laser beam 4 is applied only to the outer surface of the plate material, and the die is Since there is almost no conduction up to the inner surface side where it is located, the die does not cause inconvenience such as softening due to heat. Further, since the laser beam 4 is applied to only the heating portion 6 of the plate material, that is, only one point, and the other portions are not heated, the heat is retained inside the plate material after the plate material is bent. Instead, it quickly disperses over the entire surface of the plate material, and the temperature of the plate material itself hardly rises. Even when the laser beam 4 is applied only to the heating portion 6 of the plate material, there is no inconvenience such as cracking in the bent portion of the plate material in the die portion in the previous stage. Since the heating portion 6 of the plate material irradiated with the laser beam 4 is shielded from the outside air by the inert gas 8, it is possible to prevent inconveniences such as rough skin due to oxidation of the heating surface of the heating portion 6 of the plate material. As a result, the product quality of the forming rail 1 can be further improved.
【００２２】ところで、上記実施例の熱源は、レーザー
ビーム発振手段から発振されるレーザービーム４を集光
レンズ５により一般構造用圧延鋼板の所定位置に集束す
るよう構成されているが、本発明を実施する場合には、
これに限定されるものではなく、レーザービーム４に限
らず、高周波誘導加熱等の高密度加熱により一般構造用
圧延鋼板の表裏に急な温度勾配を設定でき、局所的に加
熱できるものであればよく、この場合も上記実施例と同
様の効果を有する。また、熱源からの加熱は、上記実施
例のように、必ずしも一般構造用圧延鋼板の彎曲部外側
面に加える必要はなく、ダイスが接触しない側の側面、
即ち、一般構造用圧延鋼板の外側面または内側面のいず
れか一方に加えられるものであればよい。即ち、高密度
加熱により一般構造用圧延鋼板の表裏に急な温度勾配を
設定でき、ダイスが一般構造用圧延鋼板の加熱面に直接
接触しない限りにおいて、上記実施例と同様の効果を奏
する。By the way, the heat source of the above-mentioned embodiment is constructed so that the laser beam 4 oscillated from the laser beam oscillating means is focused by the condenser lens 5 at a predetermined position of the rolled steel plate for general structure. If you do
The present invention is not limited to this, and is not limited to the laser beam 4 and can be locally heated by setting a steep temperature gradient on the front and back of the general structural rolled steel sheet by high-density heating such as high-frequency induction heating. Of course, also in this case, the same effect as that of the above embodiment is obtained. Further, the heating from the heat source does not necessarily have to be applied to the outer surface of the curved portion of the general structural rolled steel sheet as in the above embodiment, and the side surface on the side where the die does not contact,
That is, it may be added to either the outer surface or the inner surface of the general structural rolled steel sheet. That is, a steep temperature gradient can be set on the front and back of the rolled steel sheet for general structure by high-density heating, and the same effect as that of the above-described embodiment can be obtained as long as the die does not directly contact the heating surface of the rolled steel sheet for general structure.
【００２３】また、本発明は、上記実施例の図３に示す
断面形状のフォーミングレール１以外にも、そのダイス
及びレーザービーム発振手段等の配置構成等を適宜変更
することにより、別の断面形状のフォーミングレールの
製造に具体化することも無論可能であり、例えば、いわ
ゆるπ（パイ）形のフォーミングレールを製造する製造
装置として具体化してもよい。In addition to the forming rail 1 having the sectional shape shown in FIG. 3 of the above-mentioned embodiment, the present invention has another sectional shape by appropriately changing the disposition and the like of the die and laser beam oscillating means. It is needless to say that the present invention can be embodied in the manufacturing of the forming rail of No. 1, and may be embodied as a manufacturing apparatus for manufacturing a so-called π (pie) type forming rail.
【００２４】[0024]
【発明の効果】以上のように、請求項１の発明のフォー
ミングレールの製造装置は、搬送される板材の幅方向所
定位置の表面を熱源により局所的に加熱し、前記板材の
前記幅方向所定位置の前記加熱された表面以外の面をダ
イスにより押圧して、前記幅方向所定位置を境にして前
記板材を曲げ加工し、前記板材を彎曲部を有する所定断
面形状に連続的に成形するものである。したがって、ダ
イスによる成形に際して、板材の彎曲部となる部分のみ
を曲げ加工の前に熱源により加熱するため、板材の彎曲
部となる部分のみが軟化してその延性が増加する。した
がって、小さい荷重で板材の彎曲部の曲げ加工を容易に
行なうことができ、かつ、彎曲部の曲率が小さい場合で
も、彎曲部に毛割れや肌荒れ等が生じることはない。そ
の結果、安価な材料で密着曲げを行なうことができると
ともに、製品不良を防止することができる。また、熱源
はダイスが接触しない板材の幅方向所定位置の表面のみ
を局所的に加熱するため、板材の熱がダイスに伝導され
ることがない。その結果、ダイスの加熱による軟化等の
不都合を防止できる。As described above, in the forming rail manufacturing apparatus according to the first aspect of the present invention, the surface of the conveyed plate material at a predetermined position in the width direction is locally heated by the heat source, and the plate material is subjected to the predetermined width direction. A surface other than the heated surface at a position is pressed by a die to bend the plate material at the predetermined position in the width direction and continuously form the plate material into a predetermined cross-sectional shape having a curved portion. Is. Therefore, in forming with a die, since only the curved portion of the plate material is heated by the heat source before bending, only the curved portion of the plate material is softened and its ductility is increased. Therefore, the bending of the curved portion of the plate material can be easily performed with a small load, and even if the curved portion has a small curvature, hair bending or rough skin does not occur in the curved portion. As a result, it is possible to perform close contact bending with an inexpensive material and prevent product defects. Further, since the heat source locally heats only the surface of the plate material at a predetermined position in the width direction which the die does not contact, the heat of the plate material is not conducted to the die. As a result, inconveniences such as softening due to heating of the die can be prevented.
【００２５】請求項２の発明のフォーミングレールの製
造装置は、搬送される板材の幅方向所定位置の表面にレ
ーザービーム発振手段からレーザービームを照射して、
前記表面を局所的に加熱するとともに、前記レーザービ
ーム発振手段からの前記レーザービームが照射される前
記板材の前記表面に、不活性ガス供給手段から不活性ガ
スを供給して、前記板材の前記表面の周囲を外気からシ
ールドし、前記板材の前記幅方向所定位置の前記加熱さ
れた表面以外の面をダイスにより押圧して、前記幅方向
所定位置を境にして前記板材を曲げ加工し、前記板材を
彎曲部を有する所定断面形状に連続的に成形するもので
ある。したがって、ダイスによる成形に際して、板材の
彎曲部となる部分のみを曲げ加工の直前にレーザービー
ムにより加熱するため、板材の彎曲部となる部分のみが
軟化してその延性が増加する。したがって、小さい荷重
で板材の彎曲部の曲げ加工を容易に行なうことができ、
かつ、彎曲部の曲率が小さい場合でも、彎曲部に毛割れ
や肌荒れ等が生じることはない。その結果、安価な材料
で密着曲げを行なうことができるとともに、製品不良を
防止することができる。また、レーザービームは、ダイ
スが接触しない板材の幅方向所定位置の表面を、局所的
に、かつ、高密度で加熱するため、板材は幅方向所定位
置の表面のみ急速に加熱されて、曲げ加工後は、板材の
全面に放散して板材が急速に冷却される。その結果、板
材の熱が加熱面と反対側の面または別の位置に伝導され
ることはないため、板材の熱がダイスに伝導されること
はなく、ダイスの加熱による軟化等の不都合を防止でき
る。そして、レーザービームが照射される板材の彎曲部
となる部分は、不活性ガスにより周囲を外気からシール
ドされているので、板材の彎曲部の加熱面の酸化による
肌荒れ等の不都合を防止できる。その結果、製品品質を
一層向上することができる。In the forming rail manufacturing apparatus of the second aspect of the present invention, the surface of the conveyed plate material at a predetermined position in the width direction is irradiated with a laser beam from the laser beam oscillating means,
While locally heating the surface, an inert gas is supplied from an inert gas supply means to the surface of the plate material irradiated with the laser beam from the laser beam oscillation means, and the surface of the plate material is supplied. Shielding the surroundings from the outside air, pressing a surface other than the heated surface at the predetermined position in the width direction of the plate material with a die, bending the plate material at the predetermined position in the width direction, the plate material Is continuously formed into a predetermined cross-sectional shape having a curved portion. Therefore, when forming with a die, since only the curved portion of the plate material is heated by the laser beam immediately before bending, only the curved portion of the plate material is softened and its ductility increases. Therefore, the bending portion of the plate material can be easily bent with a small load,
Moreover, even if the curvature of the curved portion is small, hair cracking or rough skin does not occur in the curved portion. As a result, it is possible to perform close contact bending with an inexpensive material and prevent product defects. In addition, since the laser beam locally and at high density heats the surface of the plate material at a predetermined position in the width direction, which the die does not contact, the plate material is rapidly heated only at the surface at the predetermined position in the width direction, and the bending process is performed. After that, the plate material is diffused over the entire surface and the plate material is rapidly cooled. As a result, the heat of the plate material is not conducted to the surface on the side opposite to the heating surface or to another position, so the heat of the plate material is not conducted to the die, preventing inconvenience such as softening due to heating of the die. it can. Further, since the surrounding portion of the curved portion of the plate material that is irradiated with the laser beam is shielded from the outside air by the inert gas, it is possible to prevent the inconvenience such as rough skin due to the oxidation of the heating surface of the curved portion of the plate material. As a result, the product quality can be further improved.
【図１】図１は本発明の一実施例のフォーミングレール
の製造装置の頂部ダイス及び側部ダイスの正面図であ
る。FIG. 1 is a front view of a top die and a side die of a forming rail manufacturing apparatus according to an embodiment of the present invention.
【図２】図２は本発明の一実施例のフォーミングレール
の製造装置の頂部ダイス及び側部ダイスの側面図であ
る。FIG. 2 is a side view of a top die and a side die of a forming rail manufacturing apparatus according to an embodiment of the present invention.
【図３】図３はフォーミングレールの一例を示す正面図
である。FIG. 3 is a front view showing an example of a forming rail.
１ｆ 密着曲げ部（彎曲部） １ｇ 密着曲げ部（彎曲部） ２ 頂部ダイス ３ 側部ダイス ４ レーザービーム ５ 集光レンズ（熱源） ６ 加熱部（幅方向所定位置） ７ ノズル（不活性ガス供給手段） ８ 不活性ガス 1f Adhesive bend part (curved part) 1g Adhesive bend part (curved part) 2 Top die 3 Side die 4 Laser beam 5 Condensing lens (heat source) 6 Heating part (fixed position in the width direction) 7 Nozzle (inert gas supply means) ) 8 Inert gas
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ６６Ｂ 7/02 Ｂ 9243−3Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B66B 7/02 B 9243-3F
Claims (2)
を局所的に加熱する熱源と、 前記板材の前記幅方向所定位置の前記加熱された表面以
外の面を押圧して、前記幅方向所定位置を境にして前記
板材を曲げ加工し、前記板材を彎曲部を有する所定断面
形状に連続的に成形するダイスとを具備することを特徴
とするフォーミングレールの製造装置。1. A heat source for locally heating a surface of a conveyed plate material at a predetermined position in the width direction, and a surface other than the heated surface at the predetermined position in the width direction of the plate material, for pressing the surface in the width direction. A forming rail manufacturing apparatus, comprising: a die for bending the plate material at a predetermined position as a boundary, and continuously forming the plate material into a predetermined cross-sectional shape having a curved portion.
にレーザービームを照射して、前記表面を局所的に加熱
するレーザービーム発振手段と、 前記レーザービーム発振手段からの前記レーザービーム
が照射される前記板材の前記表面に不活性ガスを供給し
て、前記板材の前記表面の周囲を外気からシールドする
不活性ガス供給手段と、 前記板材の前記幅方向所定位置の前記加熱された表面以
外の面を押圧して、前記幅方向所定位置を境にして前記
板材を曲げ加工し、前記板材を彎曲部を有する所定断面
形状に連続的に成形するダイスとを具備することを特徴
とするフォーミングレールの製造装置。2. A laser beam oscillating means for irradiating a surface of a conveyed plate material at a predetermined position in the width direction with a laser beam to locally heat the surface, and the laser beam irradiating from the laser beam oscillating means. An inert gas supply means for supplying an inert gas to the surface of the plate material to shield the periphery of the surface of the plate material from the outside air, and other than the heated surface at a predetermined position in the width direction of the plate material A die for pressing the surface of the plate to bend the plate material at the predetermined position in the width direction and continuously forming the plate material into a predetermined cross-sectional shape having a curved portion. Rail manufacturing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4104428A JP2669261B2 (en) | 1992-04-23 | 1992-04-23 | Forming rail manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4104428A JP2669261B2 (en) | 1992-04-23 | 1992-04-23 | Forming rail manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05293555A true JPH05293555A (en) | 1993-11-09 |
| JP2669261B2 JP2669261B2 (en) | 1997-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4104428A Expired - Fee Related JP2669261B2 (en) | 1992-04-23 | 1992-04-23 | Forming rail manufacturing equipment |
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| Country | Link |
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| JP (1) | JP2669261B2 (en) |
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| JPH0840158A (en) * | 1994-07-27 | 1996-02-13 | Nkk Corp | Manufacture of bumper beam |
| WO2002062499A1 (en) * | 2001-02-07 | 2002-08-15 | Schuoecker Dieter | Method for producing profiles by non-cutting shaping |
| KR100712625B1 (en) * | 2006-03-10 | 2007-05-02 | 주식회사다스 | T-type upper rail manufacture device and method |
| JP2013543443A (en) * | 2010-09-20 | 2013-12-05 | エイティーアイ・プロパティーズ・インコーポレーテッド | High temperature forming method for metal materials |
| JP2015020171A (en) * | 2013-07-16 | 2015-02-02 | 株式会社アマダ | Laser-assist bending processing method and device thereof |
| CN105057446A (en) * | 2015-08-26 | 2015-11-18 | 浙江三永机械有限公司 | Machining line for hollow rail |
| CN105290182A (en) * | 2015-09-08 | 2016-02-03 | 江苏同力机械有限公司 | Escalator armrest guide rail and bend molding method thereof |
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| CN107470455A (en) * | 2017-08-30 | 2017-12-15 | 合肥正特机械有限公司 | Beam mould and its moulding process in a kind of household refrigerator-freezer |
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| US9796005B2 (en) | 2003-05-09 | 2017-10-24 | Ati Properties Llc | Processing of titanium-aluminum-vanadium alloys and products made thereby |
| US9523137B2 (en) | 2004-05-21 | 2016-12-20 | Ati Properties Llc | Metastable β-titanium alloys and methods of processing the same by direct aging |
| KR100712625B1 (en) * | 2006-03-10 | 2007-05-02 | 주식회사다스 | T-type upper rail manufacture device and method |
| US10053758B2 (en) | 2010-01-22 | 2018-08-21 | Ati Properties Llc | Production of high strength titanium |
| US9765420B2 (en) | 2010-07-19 | 2017-09-19 | Ati Properties Llc | Processing of α/β titanium alloys |
| US10144999B2 (en) | 2010-07-19 | 2018-12-04 | Ati Properties Llc | Processing of alpha/beta titanium alloys |
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| US10513755B2 (en) | 2010-09-23 | 2019-12-24 | Ati Properties Llc | High strength alpha/beta titanium alloy fasteners and fastener stock |
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| JP2015020171A (en) * | 2013-07-16 | 2015-02-02 | 株式会社アマダ | Laser-assist bending processing method and device thereof |
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| CN105057446B (en) * | 2015-08-26 | 2017-02-01 | 浙江三永机械有限公司 | Machining line for hollow rail |
| CN105057446A (en) * | 2015-08-26 | 2015-11-18 | 浙江三永机械有限公司 | Machining line for hollow rail |
| CN105290182A (en) * | 2015-09-08 | 2016-02-03 | 江苏同力机械有限公司 | Escalator armrest guide rail and bend molding method thereof |
| US10502252B2 (en) | 2015-11-23 | 2019-12-10 | Ati Properties Llc | Processing of alpha-beta titanium alloys |
| CN107470455B (en) * | 2017-08-30 | 2019-05-28 | 康帅冷链设备科技江苏有限公司 | Beam mould in a kind of household refrigerator-freezer |
| CN107470455A (en) * | 2017-08-30 | 2017-12-15 | 合肥正特机械有限公司 | Beam mould and its moulding process in a kind of household refrigerator-freezer |
| CN116493487A (en) * | 2023-06-28 | 2023-07-28 | 合肥高科科技股份有限公司 | Automatic rolling production line for refrigerator middle beam |
| CN116493487B (en) * | 2023-06-28 | 2023-11-24 | 合肥高科科技股份有限公司 | Automatic rolling production line for refrigerator middle beam |
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