JP3810706B2

JP3810706B2 - Manufacturing method and manufacturing apparatus for panel with screw metal fittings

Info

Publication number: JP3810706B2
Application number: JP2002135486A
Authority: JP
Inventors: 智仙岡田; 泰宏南部
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2002-05-10
Filing date: 2002-05-10
Publication date: 2006-08-16
Anticipated expiration: 2022-05-10
Also published as: JP2003326328A

Description

【０００１】
【発明の属する技術分野】
この発明は、機器を固定するためのねじ金具を有するパネルの製造方法及び製造装置に関する。
【０００２】
【従来の技術】
従来、機器を載せたパネル、または機器を収納するパネルには機器を固定するためのナットを備えている。ナットに替えてボルトの場合もある。
【０００３】
ナットまたはボルトをパネルに固定する手段として、例えば、ナットまたはボルトをパネルに溶接して固定したり、ナットまたはボルトをパネルに圧入して固定したりしている。以下、ナットまたはボルトのことをねじ金具という。
【０００４】
機器を収納するパネルの場合、板の周囲は折り曲げられている。また、補強用に板に凹凸を設けて補強している。これはプレスによって製作している。プレスでは雄雌の一対の金型が必用で効果になっている。
【０００５】
金型を少なくする手段として、特開２００２−１４４４号（ＥＰ１１４７８３２号）のように逐次成形方法が提案されている。これは、雄雌の型の一方の型に素材の板を固定し、棒状の成形工具で素材の板を押しながら型に沿って移動させて、逐次的に板を加工するものである。型は、素材の板を整形するための型と、素材の板を固定するための型と、からなる。
【０００６】
【発明が解決しようとする課題】
ねじ金具をパネルに圧入して固定すれば、所定形状へのパネルの加工とねじ金具の固定とは別の装置で行われることになり、少量生産では高価になる。
【０００７】
本発明の第１の目的は、ねじ金具の固定とパネルの加工を一つの装置で行えるようにすることにある。
【０００８】
【課題を解決するための手段】
上記の目的は、第１の治具にねじ金具を配置するとともに、第２の治具及び第３の治具にパネルの素材の板を配置し、前記板にはねじ金具用の下穴が明いており、前記第１の治具は、前記下穴に対応して、前記ねじ金具が回転しないように保持するものであり、前記第２の治具は前記パネルの形状に対応した形状をしており、前記第３の冶具は前記板を固定するものであり、成形工具を前記下穴の半径方向の前記板を介して前記第１の治具に押圧した状態で前記下穴の周囲に沿って移動させ、また、前記成形工具を前記板を介して前記第２の治具に沿って移動させ、前記成形工具を前記第１の治具または前記第２の治具に沿って移動させる際に、該成形工具及び該第３の治具を前記成形工具の軸方向の前記ねじ金具側に移動させること、によって、達成できる。
【０００９】
【発明の実施の形態】
この発明の一実施例を図１〜図８により説明する。これによって製造されるパネルは、例えば、鉄道車両の機器を収納したり、機器を設置したりするパネルである。ねじ金具はナットの場合を説明する。
【００１０】
このパネル１０は図８に示すに機器Ｃを設置するためのベースフレームである。機器Ｃは、そのフランジＦのボルト孔Ｈに挿入したボルトＢにより、パネル１に設置したナット２（パネル１の裏面にある。）に固定される。
【００１１】
パネル１０は機器Ｃの重量等に対応する剛性をもたせたり、パネルを設置する個所の形状に対応したりするために、適宜の形の張出し加工や絞り加工、即ち塑性加工が施されている。図示の例では、所要寸法形状である正方形の金属板の外周フランジ１１内に略正方形の突条域１２及び突状域内に、前記正方形の対角線の突条域１３を形成している。ナット２０は突状域１２の裏面に設置している。
【００１２】
ナット２０は、六角ナット（本体という。）２１と、その軸方向の端部に設けた小径の突出部２２と、からなる。突出部２２はナット本体２１と同心である。突出部２２の突出代はパネル１０の素材の板厚よりも小さい。突出部２２の基部には円周溝２２ｂがある。突出部２２の先端は四角形であるが、円錐台形状でもよい。ナット２０は、突状域１２の裏面にパネル１０のナット２０（突出部２２）のための下穴１８をかしめて固定している。すなわち、突出部２２側のナット本体２１の端部を板１０に圧入し、下穴１８の周囲の金属を円周溝２２ｂに流入させ、下穴の周囲の金属を突出部２２に密着させている。ナット２０は、板に圧入して固定する公知のナットを用いることができる。
【００１３】
パネル１０の素材の板はアルミニウム合金製であり、板厚：５ｍｍである。板は鉄製、ステンレス製でもよい。ナット２０のボルト径は１０ｍｍである。ナット２０の間隔は１００ｍｍである。
【００１４】
このねじ金具付きパネル１０の製造を図１〜図７により説明する。このねじ金具付きパネル１０を製造するための治具（金型）は、ナット２０を保持するための第１の治具１１０とし、突状域１２、１３を形成するための第２の治具１２０と、パネル１０の外周フランジを保持するための第３の治具１３０とからなる。第２の治具に沿って移動し、板２０を成形するための成形工具１４０を有する。
【００１５】
成形工具１４０は、適宜の直径の丸棒体であり、軸線回りに回転不能又は回転可能に保持具に保持されている。成形工具５０の先端部５１の縦断面は、両側がＲ部となり、例えば、平坦部はＲの２倍長であり、パネル１０に形成するナット取付け用下孔１８の直径に略相当することが好ましい。即ち、成形工具１４０の直径はパネル１０に形成するナット取付け用下孔１８の直径の略２倍になる。
【００１６】
ナット２０の固着工程に用いる成形工具１４０とパネル１０の成形工程に用いる成形工具１４０とは、同じ工具でもよく、又異なる別の工具でもよい。
【００１７】
第１の治具１１０と第２の治具１２０とは架台１５０の上面に設置している。第１の治具１１０の上面と第２の治具１２０の上面とは実質的に同一面にある。
【００１８】
第２の治具１２０は、突状域１２，１３を形成するための金型であり、実質的に突状域１２，１３と同一形状をしている。すなわち、第２の治具１２０は、架台１５０上にパネル１０の突条域１２，１３に対応し、その内側面に嵌まり得る断面の凸形状の成形型１２２を設けたものである。第２の治具１２０の角部は、板１０を成形しやすくするため、円弧状である。また、また垂直方向の直線部は傾斜面にしている。
【００１９】
成形型部１２２の形状は、形成されるパネル１の突条域１２，１３に正確に嵌合するようなものであることは必ずしも必要でなく、単純化された概略の形状でもよい。
【００２０】
第２の治具１２０の一部が第１の治具１１０である。第２の治具１２０の上面に、六角形ナット２０を入れるための六角形の穴１１３を設けて、第１の治具１１０としている。穴１１３は複数のナット２０の位置に対応して設置している。
【００２１】
ナット２０の保持穴１１３の深さはナット本体２１の厚さより適宜浅く設けている。保持穴１１３の深さは、ナット２０を支える座１１５の高さで決まる。つまり、第１の治具１１０は、第２の治具１２０に設けた六角形の穴１１３と、その上面の周囲の金型１１４と、座１１５とからなる。ナット２０の軸心はパネル１０の面に直直交方向で、垂直方向である。ナット２０の厚さ等に対応して座１１５を入れ替えできる。また、ナット２０よりも十分に大きくて四角形（または多角形）の穴を設けておき、ナット２０の大きさに対応した保持穴１１３を有する四角形金具を前記四角形穴に入れるようにできる。
【００２２】
第３の治具１３０は、パネル１０の素材の板の外周フランジ１１を保持するものであり、外周フランジ１１を支える四角形の枠の座１３１と外周フランジ１１に載る押え座１３２とからなる。押え座１３２は四角形の枠である。座１３１，１３２とボルト１３６で外周フランジ１１を挟んで固定している。これによって、板１０の成形時の変形を拘束する。
【００２３】
成形工具１４０は第２の治具１２０に沿って垂直方向及び周方向に移動できる。板１０に接し移動することによって、成形工具１４０は自転する。成形工具１４０は第２の治具１２０に沿って移動し、成形工具１４０が第２の治具１２０に沿って１周する毎に、成形工具１４０及び第３の治具１３０は下降する。両者の下降量は同一である。第３の治具１３０及び成形工具１４０は成形工具１４０の軸方向に移動できる。第２の治具の周方向への成形工具１４０の移動、成形工具１４０及び第３の治具１３０の下降の制御は、ＮＣ制御装置で行う。すなわち、成形工具１４０は、ナット２０の数、位置及びパネル１０の形状に対応したプログラムに従って移動させられる。第３の治具１３０の下降の制御同様にプログラムに従って行われる。
【００２４】
ねじ金具付きパネル１０の製作手順を説明する。まず、第１の治具１１０のそれぞれの穴１１３にナット２０を入れる。
【００２５】
次に、パネル１０の素材の板を、ナット２０、第３の治具１３０の座１３１に載せる。板１０にはナット２０に対応した位置にナット用の下穴１８を予め設けている。下穴１８は、ナット２０の突出部２２が容易に入る穴である。
【００２６】
次に、板１０の外周フランジ１１を、押え座１３２、ボルト１３６で第３の治具１３０の座１３１に挟んで固定する。第３の治具１３０は、板１０の成形加工に対抗し得る所要の剛性を有する。
【００２７】
この状態では、ナット２０の突出部２２が下穴１８に入っている。第３の治具の座１３１は所定高さに停止している。このとき、板１０の下面と第１の治具１１０の上面１１４との間には隙間Ｄ１がある。また、突出部２２の上端（先端）は板１０の上面よりもＤ２の低い位置にある。Ｄ２＞Ｄ１である。
【００２８】
次に、板１０の上面に潤滑油を塗り、成形工具１４を下降させ、板１０の上面に接触させる。この位置は一つのナット２０の周囲の所定位置である。
【００２９】
次に、成形工具１４０の先端部を下孔１８の周辺部を旋回させ、１旋回毎に所定量（例えば０．１ｍｍ）づつ下方に移動させ、下穴１８の周囲の板１０を押圧する。
【００３０】
これによって、図４に示すように、板１０の下面は、第１の治具１１０の上面１１４に当接する（隙間Ｄ１＝０）まで押し込まれる。このため、ナット本体２１の上部側が板１０の下面に圧入された状態になる。また、下孔１８の周囲の板１０は、突出部２２に密着するとともに、下穴１８の周囲の金属が円周溝２２ｂには移動し、密着する。これらによって、板１０はナット２０にかしめられ、ナット２０は固定される。Ｄ２＞Ｄ１であるので、突出部２２は板１０の上面から突出しない。最も板１０の上面と突出部の上面が一致する位置で、成形工具１４０の下降を停止させる。図６，図７では突出部２２の上端と板１０の上面との間に隙間がある状態で成形工具１４０の下降を停止している。この隙間で押圧による余分の金属を吸収する。Ｄ１，Ｄ２は実験によって定める。
【００３１】
次に、一つのナット２０の加工が終了したら、他のナット２０に対して同様に行う。このようにして全てのナット２０を順次固定する。
【００３２】
次に、外周フランジ１１、突状域１２，１３の成形を行う。板１０を押圧しながら、第２の治具１２０の成形型１２２に沿って成形工具１４０を移動させる。成形工具１４０が一周する毎に、第３の治具１３０及び成形工具１４０を１ｍｍ下降させる。また、成形工具１０を板１０の外周側に移動させる。この状態で、成形工具を第２の治具１１０に沿って移動させる。図５及び図６に示す。
【００３３】
なお、それぞれのナット２０をかしめた際に、ナット２０の周囲の板１０が歪んだり、板１０の下面と第２の治具１２０の上面との間に隙間Ｄ１があったりする場合には、それぞれのナット２０を結ぶ線に沿って、板１０を第２の治具１２０の上面に成形工具１４０で押圧した状態で、成形工具１４０を周回させて、歪み等を取ることができる。
【００３４】
成形型１２２がパネル１０の突条域１２，１３の形状に合致している場合には、成形型１２２に倣うように成形工具１４０が送られて張出し加工が行われ、最終的には、成形型１２２と金属板Ｍとは接する状態となる。
【００３５】
成形型１２２がパネル１の突条域１２，１３の形状に概略相当した単純形状の場合には、ＮＣ制御装置の所定形状を描くプログラムに従うのみの成形工具１４０の移動で張出し加工が行われる。最終的には、成形型１２２と板１０との間に空隙が残された状態になる。
【００３６】
第３の治具１３０で把持されている板１０はそのままパネル１０の外周フランジ１１となる。
【００３７】
成形が終わると、ボルト１３６を外し、押え座１３２を除き、所定形状に形成されたパネル１０を取り出す。
【００３８】
上記実施例では、一つのナットを完全にかしめた後、他のナットのかしめ作業を行っている。このように完全なかしめ作業を一つづつ行っている。このため、次の方法に比べて、作業を短時間に行えるものである。しかし、局所歪みが大きくなりやすく、変形の可能性が高い。
【００３９】
一方、次のように行うと、上記問題点がない。また、ナットとナットの間隔が小さい場合に歪みを小さくできる。しかし、ナットからナットへの成形工具の移動量が多くなり、加工時間が大きくなる。次のように行う。成形工具を第１のナットの周囲を１回転させた後（この状態ではナットのかしめ作業は完了していない。）、第２のナット（例えば、隣接するナット）の位置に成形工具を移動させる。成形工具をこの第２のナットの周囲を１回転させ、成形工具を第３のナットの位置に移動させる。このようにして最初の第１のナットの位置に成形工具が戻ると、成形工具を０．１ｍｍ下降させ、前記を繰り返す。
【００４０】
前記特開２００２−１４４４号（ＥＰ１１４７８３２号）の図１の成形品１０の下面にナットを固定する場合は、昇降座４０の一部が第１の治具となり、昇降座４０が第３の治具となり、雌型２０が第２の治具となる。
【００４１】
ナットは機器を固定するものであっても、パネルを他の機器に固定するナットでもよい。また、ナットは他の機器でも良い。ナットの固定のみを行うことができる。
【００４２】
ねじ金具がボルトの場合も同様に固定できる。このボルトは公知の圧入用のボルトを利用できる。図２において、板１０の下面にボルトを固定する場合であって、ボルトの軸は下方に突出している場合である。この場合は、第１の治具の上部にボルトの軸部を下方にしてボルトの頭を載せる。板にはボルトの頭より小径の穴があいている。成形工具で下穴の周囲の板をボルトの頭に押圧してボルトを固定する。
【００４３】
他の一つは、図２において、板１０の下面にボルトを固定する場合であって、ボルトの軸が板１０を貫通して上方に突出している場合である。この場合は、第１の治具の上部にボルトの軸部を上方にしてボルトの頭を載せる。板にはボルトの頭より小径であって、ボルトの軸よりも大径の穴があいている。成形工具で下穴の周囲の板をボルトの頭に押圧してボルトを固定する。
【００４４】
【発明の効果】
この発明によれば、ねじ金具の固定とパネルの成形とを、実質的に一つの装置で行えるものである。
【図面の簡単な説明】
【図１】この発明の一実施例のねじ金具付きパネルの製造工程の初期状態の斜視図。
【図２】図１の要部の縦断面図。
【図３】図２の要部の拡大図。
【図４】図１において、ナットの固定工程の終了時の縦断面図。
【図５】図１において、パネルの成形加工工程の斜視図。
【図６】図５の要部の縦断面図。
【図７】図５において、成形加工終了時の縦断面図。
【図８】ねじ金具付きパネルと機器の分解斜視図。
【符号の説明】
１パネル
１１外周フランジ
１２，１３突条域
１８ナット取付け用下孔
２０ナット
２１ナット本体
２２突出部
２２ｂ円周溝
１１０第１の治具
１２０第２の治具
１３０第３の治具
１４０成形工具
１５０架台
Ｆフランジ
Ｃ機器箱
Ｈボルト孔
Ｂボルト[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and an apparatus for manufacturing a panel having a screw fitting for fixing a device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a panel on which a device is placed or a panel that houses a device has been provided with a nut for fixing the device. There are also bolts instead of nuts.
[0003]
As a means for fixing the nut or bolt to the panel, for example, the nut or bolt is fixed by welding to the panel, or the nut or bolt is press-fitted and fixed to the panel. Hereinafter, the nut or bolt is referred to as a screw fitting.
[0004]
In the case of a panel for storing equipment, the periphery of the board is bent. Further, the plate is reinforced by providing unevenness for reinforcement. This is produced by pressing. In the press, a pair of male and female dies are necessary and effective.
[0005]
As a means for reducing the number of molds, a sequential molding method has been proposed as disclosed in JP-A-2002-1444 (EP1147832). In this method, a material plate is fixed to one of the male and female dies, and is moved along the die while pressing the material plate with a rod-shaped forming tool to sequentially process the plate. The mold includes a mold for shaping the material plate and a mold for fixing the material plate.
[0006]
[Problems to be solved by the invention]
If the screw fitting is press-fitted into the panel and fixed, the processing of the panel into a predetermined shape and the fixing of the screw fitting are performed by different devices, which is expensive in small-scale production.
[0007]
A first object of the present invention is to enable fixing of a screw fitting and processing of a panel with a single device.
[0008]
[Means for Solving the Problems]
The above purpose is to arrange the screw metal fittings on the first jig, and arrange the panel material plates on the second and third jigs, and the plate has pilot holes for screw metal fittings. It is clear that the first jig corresponds to the pilot hole and holds the screw fitting so as not to rotate, and the second jig has a shape corresponding to the shape of the panel. And the third jig fixes the plate, and surrounds the pilot hole in a state in which a forming tool is pressed against the first jig through the plate in the radial direction of the pilot hole. And the molding tool is moved along the second jig via the plate, and the molding tool is moved along the first jig or the second jig. Moving the forming tool and the third jig toward the screw fitting in the axial direction of the forming tool. Te, can be achieved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. The panel manufactured by this is a panel which accommodates the apparatus of a rail vehicle, for example, or installs an apparatus. The case where the screw fitting is a nut will be described.
[0010]
The panel 10 is a base frame for installing the device C as shown in FIG. The device C is fixed to a nut 2 (on the back surface of the panel 1) installed on the panel 1 by a bolt B inserted into the bolt hole H of the flange F.
[0011]
The panel 10 is subjected to an appropriate overhanging process or drawing process, that is, a plastic process, in order to give rigidity corresponding to the weight of the device C or the like, or to correspond to the shape of the place where the panel is installed. In the example shown in the drawing, a square ridge region 12 is formed in the outer peripheral flange 11 of a square metal plate having a required size and a square diagonal ridge region 13 is formed in the protrusion region. The nut 20 is installed on the back surface of the protruding region 12.
[0012]
The nut 20 includes a hex nut (referred to as a main body) 21 and a small-diameter protruding portion 22 provided at an end portion in the axial direction. The protrusion 22 is concentric with the nut body 21. The protrusion margin of the protrusion 22 is smaller than the plate thickness of the material of the panel 10. There is a circumferential groove 22 b at the base of the protrusion 22. The tip of the protrusion 22 has a quadrangular shape, but may have a truncated cone shape. The nut 20 is fixed by caulking a pilot hole 18 for the nut 20 (projecting portion 22) of the panel 10 on the back surface of the projecting region 12. That is, the end portion of the nut body 21 on the protruding portion 22 side is press-fitted into the plate 10, the metal around the pilot hole 18 is caused to flow into the circumferential groove 22 b, and the metal around the pilot hole is brought into close contact with the protruding portion 22. Yes. The nut 20 can be a known nut that is press-fitted into a plate and fixed.
[0013]
The material plate of the panel 10 is made of an aluminum alloy and has a thickness of 5 mm. The plate may be made of iron or stainless steel. The bolt diameter of the nut 20 is 10 mm. The interval between the nuts 20 is 100 mm.
[0014]
The manufacture of the panel 10 with the screw fitting will be described with reference to FIGS. A jig (die) for manufacturing the panel 10 with the screw fitting is a first jig 110 for holding the nut 20, and a second jig for forming the projecting regions 12 and 13. 120 and a third jig 130 for holding the outer peripheral flange of the panel 10. It moves along the second jig and has a forming tool 140 for forming the plate 20.
[0015]
The forming tool 140 is a round bar having an appropriate diameter, and is held by a holder so as not to rotate or to rotate around an axis. The longitudinal section of the front end portion 51 of the forming tool 50 has R portions on both sides. For example, the flat portion is twice as long as R and substantially corresponds to the diameter of the nut mounting pilot hole 18 formed in the panel 10. preferable. That is, the diameter of the forming tool 140 is approximately twice the diameter of the nut mounting pilot hole 18 formed in the panel 10.
[0016]
The forming tool 140 used for the fixing process of the nut 20 and the forming tool 140 used for the forming process of the panel 10 may be the same tool or different tools.
[0017]
The first jig 110 and the second jig 120 are installed on the upper surface of the gantry 150. The upper surface of the first jig 110 and the upper surface of the second jig 120 are substantially in the same plane.
[0018]
The second jig 120 is a mold for forming the projecting regions 12 and 13 and has substantially the same shape as the projecting regions 12 and 13. In other words, the second jig 120 is provided with a convex mold 122 having a cross section that can be fitted on the inner surface of the gantry 150 corresponding to the ridge regions 12 and 13 of the panel 10. The corners of the second jig 120 have an arc shape so that the plate 10 can be easily formed. In addition, the straight portion in the vertical direction is inclined.
[0019]
The shape of the mold part 122 is not necessarily required to be accurately fitted to the ridge regions 12 and 13 of the panel 1 to be formed, and may be a simplified schematic shape.
[0020]
A part of the second jig 120 is the first jig 110. A hexagonal hole 113 for inserting the hexagonal nut 20 is provided on the upper surface of the second jig 120 to form the first jig 110. The holes 113 are installed corresponding to the positions of the plurality of nuts 20.
[0021]
The depth of the holding hole 113 of the nut 20 is set to be appropriately shallower than the thickness of the nut body 21. The depth of the holding hole 113 is determined by the height of the seat 115 that supports the nut 20. That is, the first jig 110 includes a hexagonal hole 113 provided in the second jig 120, a mold 114 around the upper surface thereof, and a seat 115. The axis of the nut 20 is perpendicular to the surface of the panel 10 and perpendicular to it. The seat 115 can be replaced in accordance with the thickness of the nut 20 or the like. Further, a square (or polygonal) hole that is sufficiently larger than the nut 20 is provided, and a square fitting having a holding hole 113 corresponding to the size of the nut 20 can be inserted into the square hole.
[0022]
The third jig 130 holds the outer peripheral flange 11 of the material plate of the panel 10, and includes a rectangular frame seat 131 that supports the outer peripheral flange 11 and a presser seat 132 that rests on the outer peripheral flange 11. The presser seat 132 is a rectangular frame. The outer peripheral flange 11 is sandwiched and fixed by the seats 131 and 132 and the bolt 136. This restrains deformation of the plate 10 during molding.
[0023]
The forming tool 140 can move in the vertical direction and the circumferential direction along the second jig 120. By moving in contact with the plate 10, the forming tool 140 rotates. The forming tool 140 moves along the second jig 120, and the forming tool 140 and the third jig 130 descend every time the forming tool 140 makes one round along the second jig 120. Both descending amounts are the same. The third jig 130 and the forming tool 140 can move in the axial direction of the forming tool 140. The NC control device controls the movement of the forming tool 140 in the circumferential direction of the second jig and the lowering of the forming tool 140 and the third jig 130. That is, the forming tool 140 is moved according to a program corresponding to the number and position of the nuts 20 and the shape of the panel 10. Similar to the control of lowering the third jig 130, it is performed according to the program.
[0024]
A manufacturing procedure of the panel 10 with the screw fitting will be described. First, the nut 20 is put in each hole 113 of the first jig 110.
[0025]
Next, the material plate of the panel 10 is placed on the nut 20 and the seat 131 of the third jig 130. In the plate 10, a pilot hole 18 for a nut is provided in advance at a position corresponding to the nut 20. The pilot hole 18 is a hole into which the protruding portion 22 of the nut 20 easily enters.
[0026]
Next, the outer peripheral flange 11 of the plate 10 is fixed between the presser seat 132 and the bolt 136 with the seat 131 of the third jig 130 interposed therebetween. The third jig 130 has a required rigidity capable of resisting the forming process of the plate 10.
[0027]
In this state, the protruding portion 22 of the nut 20 is in the prepared hole 18. The seat 131 of the third jig is stopped at a predetermined height. At this time, there is a gap D1 between the lower surface of the plate 10 and the upper surface 114 of the first jig 110. Further, the upper end (tip) of the protrusion 22 is at a position where D2 is lower than the upper surface of the plate 10. D2> D1.
[0028]
Next, lubricating oil is applied to the upper surface of the plate 10, the forming tool 14 is lowered, and is brought into contact with the upper surface of the plate 10. This position is a predetermined position around one nut 20.
[0029]
Next, the tip portion of the forming tool 140 is swung around the periphery of the lower hole 18 and moved downward by a predetermined amount (for example, 0.1 mm) for each turn, and the plate 10 around the lower hole 18 is pressed.
[0030]
As a result, as shown in FIG. 4, the lower surface of the plate 10 is pushed in until it comes into contact with the upper surface 114 of the first jig 110 (gap D1 = 0). For this reason, the upper side of the nut body 21 is pressed into the lower surface of the plate 10. Further, the plate 10 around the lower hole 18 is in close contact with the protruding portion 22, and the metal around the lower hole 18 is moved into close contact with the circumferential groove 22b. As a result, the plate 10 is caulked to the nut 20 and the nut 20 is fixed. Since D2> D1, the protrusion 22 does not protrude from the upper surface of the plate 10. The lowering of the forming tool 140 is stopped at the position where the upper surface of the plate 10 and the upper surface of the protruding portion coincide with each other. 6 and 7, the lowering of the forming tool 140 is stopped in a state where there is a gap between the upper end of the protruding portion 22 and the upper surface of the plate 10. Excess metal due to pressing is absorbed by this gap. D1 and D2 are determined by experiment.
[0031]
Next, when the processing of one nut 20 is completed, the other nuts 20 are similarly processed. In this way, all the nuts 20 are fixed sequentially.
[0032]
Next, the outer peripheral flange 11 and the protruding regions 12 and 13 are formed. While pressing the plate 10, the forming tool 140 is moved along the forming die 122 of the second jig 120. Each time the forming tool 140 makes a round, the third jig 130 and the forming tool 140 are lowered by 1 mm. Further, the forming tool 10 is moved to the outer peripheral side of the plate 10. In this state, the forming tool is moved along the second jig 110. It shows in FIG.5 and FIG.6.
[0033]
In addition, when each nut 20 is caulked, if the plate 10 around the nut 20 is distorted or there is a gap D1 between the lower surface of the plate 10 and the upper surface of the second jig 120, In a state where the plate 10 is pressed against the upper surface of the second jig 120 by the forming tool 140 along the line connecting the nuts 20, the forming tool 140 can be rotated to take distortion or the like.
[0034]
When the mold 122 matches the shape of the ridge regions 12 and 13 of the panel 10, the forming tool 140 is sent so as to follow the mold 122, and the overhanging process is performed. The mold 122 and the metal plate M are in contact with each other.
[0035]
When the mold 122 has a simple shape substantially corresponding to the shape of the ridge regions 12 and 13 of the panel 1, the overhanging process is performed by moving the forming tool 140 only in accordance with a program for drawing a predetermined shape of the NC control device. Eventually, a gap is left between the mold 122 and the plate 10.
[0036]
The plate 10 held by the third jig 130 becomes the outer peripheral flange 11 of the panel 10 as it is.
[0037]
When the molding is finished, the bolt 136 is removed, the presser seat 132 is removed, and the panel 10 formed in a predetermined shape is taken out.
[0038]
In the above embodiment, after one nut is completely caulked, the other nuts are caulked. In this way, complete caulking work is performed one by one. For this reason, compared with the following method, work can be performed in a short time. However, local distortion tends to increase and the possibility of deformation is high.
[0039]
On the other hand, when the following is performed, the above-described problem does not occur. Moreover, distortion can be reduced when the distance between the nuts is small. However, the amount of movement of the forming tool from the nut to the nut increases, and the processing time increases. Do as follows. After the forming tool is rotated once around the first nut (in this state, the caulking operation of the nut is not completed), and then the forming tool is moved to the position of the second nut (for example, an adjacent nut). . The forming tool is rotated once around the second nut, and the forming tool is moved to the position of the third nut. When the forming tool returns to the position of the first first nut in this way, the forming tool is lowered by 0.1 mm and the above is repeated.
[0040]
When the nut is fixed to the lower surface of the molded article 10 of FIG. 1 of JP-A-2002-1444 (EP1147832), a part of the lifting / lowering seat 40 serves as a first jig, and the lifting / lowering seat 40 is a third jig. The female die 20 becomes the second jig.
[0041]
The nut may fix a device, or may be a nut that fixes the panel to another device. The nut may be another device. Only the nut can be fixed.
[0042]
When the screw fitting is a bolt, it can be similarly fixed. As this bolt, a known press-fitting bolt can be used. In FIG. 2, it is a case where a volt | bolt is fixed to the lower surface of the board 10, Comprising: The axis | shaft of a volt | bolt protrudes below. In this case, the bolt head is placed on the upper part of the first jig with the shaft portion of the bolt facing downward. The plate has a smaller diameter hole than the bolt head. The plate around the pilot hole is pressed against the head of the bolt with a forming tool to fix the bolt.
[0043]
The other one is a case where a bolt is fixed to the lower surface of the plate 10 in FIG. 2, and the shaft of the bolt protrudes upward through the plate 10. In this case, the bolt head is placed on the upper part of the first jig with the bolt shaft portion facing upward. The plate has a hole smaller in diameter than the bolt head and larger in diameter than the bolt shaft. The plate around the pilot hole is pressed against the head of the bolt with a forming tool to fix the bolt.
[0044]
【The invention's effect】
According to the present invention, the fixing of the screw fitting and the molding of the panel can be substantially performed with one apparatus.
[Brief description of the drawings]
FIG. 1 is a perspective view of an initial state of a manufacturing process of a panel with screw fittings according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a main part of FIG.
3 is an enlarged view of a main part of FIG.
FIG. 4 is a longitudinal sectional view at the end of the nut fixing step in FIG. 1;
FIG. 5 is a perspective view of a panel forming process in FIG. 1;
6 is a longitudinal sectional view of the main part of FIG.
FIG. 7 is a longitudinal sectional view at the end of molding in FIG.
FIG. 8 is an exploded perspective view of the panel with screw fittings and the device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Panel 11 Peripheral flange 12, 13 Projection area 18 Nut attachment pilot hole 20 Nut 21 Nut main body 22 Projection part 22b Circumferential groove 110 First jig 120 Second jig 130 Third jig 140 Molding tool 150 Mounting base F Flange C Equipment box H Bolt hole B Bolt

Claims

While arranging the screw fitting on the first jig, arranging the plate material of the panel on the second jig and the third jig,
The plate has a pilot hole for screw fittings,
The first jig is to hold the screw fitting so as not to rotate in correspondence with the pilot hole.
The second jig has a shape corresponding to the shape of the panel,
The third jig is for fixing the plate,
Moving the forming tool along the periphery of the pilot hole in a state of being pressed against the first jig via the radial plate of the pilot hole;
Further, the molding tool is moved along the second jig through the plate,
When the forming tool is moved along the first jig or the second jig, the forming tool and the third jig are moved toward the screw fitting in the axial direction of the forming tool. thing,
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting of Claim 1,
Placing the screw fitting on the first jig and placing the plate on at least the third jig;
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting of Claim 1,
First, the screw fitting is fixed to the plate by the forming tool,
Next, processing the plate into a panel along the second jig by the forming tool,
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting of Claim 3,
When fixing the screw fitting to the plate by the forming tool, the third tool and the forming tool are moved in the axial direction each time the forming tool rotates around the pilot hole.
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting of Claim 1,
Insert the axial protrusion of the screw fitting into the pilot hole,
In this state, arranged so as to have a gap between the end of the main body of the screw fitting on the protruding portion side and the plate,
Pressing the plate with the forming tool;
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting of Claim 1,
The screw fitting is a nut;
The first jig is to hold the screw metal fitting so as not to rotate in a state where the protruding portion of the axial end of the nut can be inserted into the prepared hole,
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting according to claim 6,
In a state where the axial protrusion of the nut is inserted into the pilot hole,
Arranged so as to have a gap between the end of the main body of the screw fitting on the protruding portion side and the plate,
The pressing of the periphery of the pilot hole is stopped in a state in which the main body of the nut is press-fitted into the plate by the pressing, and there is a gap between the tip of the protruding portion and the surface of the plate. ,
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting according to claim 7,
The pressing of the periphery of the pilot hole is stopped in a state in which the main body of the nut is press-fitted into the plate by the pressing, and there is a gap between the tip of the protruding portion and the surface of the plate. ,
The manufacturing method of the panel with a screw metal fitting characterized by these.

A screw fixture is arranged on the first jig, and a plate for fixing the screw fitting is arranged on the second jig,
The plate has a pilot hole for screw fittings,
The first jig is for holding the screw fitting so as not to rotate in correspondence with the pilot hole,
The second jig is fixing the outer periphery of the plate,
Moving the forming tool along the periphery of the pilot hole in a state of being pressed against the first jig via the radial plate of the pilot hole;
Moving the forming tool and the second jig toward the screw fitting in the axial direction of the forming tool when moving the forming tool along the first jig;
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting according to claim 9,
The screw fitting and the plate are placed on each of the first jig and the second jig;
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting according to claim 9,
Moving the second jig and the forming tool in the axial direction each time the forming tool rotates around the pilot hole when the screw fitting is fixed to the plate by the forming tool;
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting according to claim 9,
Insert the axial protrusion of the screw fitting into the pilot hole,
In this state, there is a gap between the end of the main body of the screw fitting on the protruding portion side and the plate,
Pressing the plate with the forming tool;
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting according to claim 9,
The screw fitting is a nut;
The first jig is to hold the screw metal fitting so as not to rotate in a state where the protruding portion of the axial end of the nut can be inserted into the prepared hole,
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting according to claim 13,
In a state where the axial protrusion of the nut is inserted into the pilot hole,
Arranged so as to have a gap between the end of the main body of the screw fitting on the protruding portion side and the plate,
The pressing of the periphery of the pilot hole is stopped in a state in which the main body of the nut is press-fitted into the plate by the pressing, and there is a gap between the tip of the protruding portion and the surface of the plate. ,
The manufacturing method of the panel with a screw metal fitting characterized by these.

In the manufacturing method of the panel with a screw metal fitting according to claim 9,
The pressing of the periphery of the pilot hole is stopped in a state in which the main body of the nut is press-fitted into the plate by the pressing, and there is a gap between the tip of the protruding portion and the surface of the plate. ,
The manufacturing method of the panel with a screw metal fitting characterized by these.

A first jig for mounting a screw fitting;
A second jig having a shape corresponding to the shape of the panel to which the screw fitting is fixed;
A third jig for fixing the plate;
The first jig is to hold the screw fitting so as not to rotate,
A control device for moving the forming tool and the third jig pressed against the plate in the axial direction of the forming tool and moving the forming tool in the radial direction;
An apparatus for manufacturing panels with screw brackets.

In the manufacturing apparatus of the panel with a screw metal fitting according to claim 16,
The first jig has a hole for mounting the screw fitting, and the hole is smaller than a thickness of a body of the screw fitting;
An apparatus for manufacturing a panel with screw fittings.

In the manufacturing apparatus of the panel with a screw metal fitting according to claim 16,
The third jig is composed of a first portion on which the outer peripheral portion of the plate is placed, and a second portion that sandwiches the plate between the first portion in the outer peripheral portion of the plate,
An apparatus for manufacturing a panel with screw fittings.