JP2016083692A - Spinning molding method - Google Patents

Spinning molding method Download PDF

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Publication number
JP2016083692A
JP2016083692A JP2014219846A JP2014219846A JP2016083692A JP 2016083692 A JP2016083692 A JP 2016083692A JP 2014219846 A JP2014219846 A JP 2014219846A JP 2014219846 A JP2014219846 A JP 2014219846A JP 2016083692 A JP2016083692 A JP 2016083692A
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Prior art keywords
plate material
processing tool
spinning
molding method
molding
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JP2014219846A
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JP6417185B2 (en
Inventor
恒平 三上
Kohei Mikami
恒平 三上
嘉秀 今村
Yoshihide Imamura
嘉秀 今村
敏郎 辻
Toshiro Tsuji
敏郎 辻
義郎 壁
Yoshiro Kabe
義郎 壁
勇人 岩崎
Isato Iwasaki
勇人 岩崎
博 北野
Hiroshi Kitano
博 北野
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Kawasaki Heavy Industries Ltd
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Kawasaki Heavy Industries Ltd
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Priority to JP2014219846A priority Critical patent/JP6417185B2/en
Priority to EP15855067.3A priority patent/EP3213832B1/en
Priority to PCT/JP2015/005181 priority patent/WO2016067537A1/en
Priority to CN201580059003.5A priority patent/CN107107147B/en
Priority to US15/523,584 priority patent/US20170304885A1/en
Publication of JP2016083692A publication Critical patent/JP2016083692A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/18—Spinning using tools guided to produce the required profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling

Abstract

PROBLEM TO BE SOLVED: To provide a spinning molding method capable of preventing the formation of an indentation of a machining tool.SOLUTION: Provided is a spinning molding method for molding a to-be-molded area of a plate into a tapered shape using a machining tool while rotating the plate, comprises: moving the machining tool from an inner end of the to-be-molded area to an outer end thereof while pressing the plate; and rotating the plate in a state in which a position of the machining tool is constrained on the outer end.SELECTED DRAWING: Figure 1

Description

本発明は、板材を加工するスピニング成形方法に関する。   The present invention relates to a spinning molding method for processing a plate material.

従来から、板材を回転させながら加工具を用いて板材の成形対象領域をテーパー状に成形するスピニング成形方法が知られている（例えば、特許文献１参照）。   2. Description of the Related Art Conventionally, there is known a spinning forming method in which a forming target region of a plate material is formed into a tapered shape using a processing tool while rotating the plate material (see, for example, Patent Document 1).

特開２０１１−２１８４２７号公報JP 2011-218427 A

通常のスピニング成形方法では、加工具が一定の軸方向送込速度（板材の回転軸に沿う方向での加工具の移動速度）で板材に押圧されながら、板材の成形対象領域の内側端から外側端に向かって一定の径方向進行速度（板材の回転軸から垂直に離れる方向での加工具の移動速度）で移動させられ、加工具が成形対象領域の外側端に到達した直後に加工具が板材から引き離される。   In the normal spinning forming method, the processing tool is pressed against the plate material at a constant axial feed speed (moving speed of the processing tool in the direction along the rotation axis of the plate material), while the plate material is formed from the inner end to the outer side. Immediately after the processing tool reaches the outer end of the molding target area, it is moved toward the end at a constant radial traveling speed (moving speed of the processing tool in a direction perpendicularly away from the rotation axis of the plate). Pulled away from the plate.

しかしながら、そのような方法では、板材における加工具を引き離した位置に、加工具の形状に合う窪み（加工具の押圧跡）が形成される。   However, in such a method, a recess (press mark of the processing tool) that matches the shape of the processing tool is formed at a position where the processing tool is separated from the plate material.

そこで、本発明は、加工具の押圧跡が形成されることを防止できるスピニング成形方法を提供することを目的とする。   Then, an object of this invention is to provide the spinning shaping | molding method which can prevent that the press trace of a processing tool is formed.

前記課題を解決するために、本発明の１つの側面からのスピニング成形方法は、板材を回転させながら加工具を用いて前記板材の成形対象領域をテーパー状に成形するスピニング成形方法であって、前記加工具を、前記板材に押圧しながら前記成形対象領域の内側端から外側端に向かって移動させ、前記外側端では前記加工具の位置を拘束した状態で前記板材を回転させる、ことを特徴とする。   In order to solve the above-mentioned problem, a spinning molding method according to one aspect of the present invention is a spinning molding method in which a molding target region of the plate material is molded into a tapered shape using a processing tool while rotating the plate material, The processing tool is moved from the inner end to the outer end of the region to be molded while being pressed against the plate material, and the plate material is rotated while the position of the processing tool is constrained at the outer end. And

上記の構成によれば、成形対象領域の外側端（すなわち、成形終了点）で加工具が待機させられるので、加工具の押圧跡が形成されることを防止できる。   According to said structure, since a processing tool is made to wait by the outer side edge (namely, shaping | molding completion point) of a shaping | molding object area | region, it can prevent that the press trace of a processing tool is formed.

また、本発明の別の側面からのスピニング成形方法は、板材を回転させながら加工具を用いて前記板材の成形対象領域をテーパー状に成形するスピニング成形方法であって、前記加工具を、前記板材に押圧しながら前記成形対象領域の内側端から外側端に向かって移動させ、前記外側端の近傍では前記加工具の軸方向送込速度および径方向進行速度を低下させる、ことを特徴とする。   Further, the spinning molding method according to another aspect of the present invention is a spinning molding method for forming a molding target region of the plate material into a tapered shape using a processing tool while rotating the plate material, The sheet material is moved from the inner end toward the outer end while being pressed against the plate material, and the axial feeding speed and the radial traveling speed of the processing tool are reduced in the vicinity of the outer end. .

上記の構成によれば、成形対象領域の外側端（すなわち、成形終了点）の近傍では板材がゆっくりと加工されるので、加工具の押圧跡が形成されることを防止できる。   According to said structure, since the board | plate material is processed slowly in the vicinity of the outer side edge (namely, shaping | molding completion point) of a shaping | molding object area | region, it can prevent that the press trace of a processing tool is formed.

前記加工具の前記板材への押圧を、前記板材における前記加工具が押圧される部分と同一円周上に位置する部分を局所的に加熱しながら行ってもよい。この構成によれば、板材を加熱しない場合や板材を全体的に加熱する場合に比べて、板材における加工具が押圧される部分を集中的に加工することができる。このため、所望の形状を得るための加工具の操作が容易となる。   You may perform the press to the said board | plate material of the said processing tool, heating the part located on the same periphery as the part in which the said processing tool is pressed in the said board | plate material. According to this structure, compared with the case where a board | plate material is not heated or the case where a board | plate material is heated as a whole, the part by which the processing tool in a board | plate material is pressed can be processed intensively. For this reason, operation of the processing tool for obtaining a desired shape becomes easy.

前記加工具は、前記板材の回転軸から遠ざかる方向に向かって縮径する断面台形状の成形ローラであり、前記成形ローラの前記板材への押圧を、成形ローラの大径部が板材に点接触し、かつ、成形ローラの側面と前記板材の回転軸に対する直交面とのなす角度が１度以上３０度以下となる姿勢に前記成形ローラを保った状態で行ってもよい。この構成によれば、板材における加工具が押圧される部分よりも外側部分の反り上がりを成形ローラの側面で規制することができる。   The processing tool is a forming roller having a trapezoidal cross section whose diameter decreases in a direction away from the rotation axis of the plate material, and the large diameter portion of the forming roller makes point contact with the plate material when the forming roller is pressed against the plate material. In addition, the molding roller may be kept in a posture in which an angle formed between a side surface of the molding roller and a plane orthogonal to the rotation axis of the plate material is 1 degree or more and 30 degrees or less. According to this configuration, it is possible to restrict the warpage of the outer portion of the plate material from the portion where the processing tool is pressed by the side surface of the forming roller.

前記加工具の前記板材への押圧を、前記板材における前記加工具が押圧される部分が浮いた状態で行ってもよい。この構成によれば、従来のスピニング成形方法でよく用いられていた成形型（マンドレル）を用いる必要がなく、製造コストを低減することができる。   You may perform the press to the said board | plate material of the said processing tool in the state in which the part in which the said processing tool in the said board | plate material is pressed floated. According to this configuration, it is not necessary to use a mold (mandrel) often used in the conventional spinning molding method, and the manufacturing cost can be reduced.

本発明によれば、加工具の押圧跡が形成されることを防止できる。   ADVANTAGE OF THE INVENTION According to this invention, it can prevent that the press trace of a processing tool is formed.

本発明の一実施形態に係るスピニング成形方法の説明図である。It is explanatory drawing of the spinning shaping | molding method which concerns on one Embodiment of this invention. （ａ）はスピニング成形開始直前の板材の断面図であり、（ｂ）はスピニング成形終了時の板材の断面図である。(A) is sectional drawing of the board | plate material just before a spinning shaping | molding start, (b) is sectional drawing of the board | plate material at the time of completion | finish of spinning shaping | molding. スピニング成形終了直前の板材への加工具の押圧状態を示す図である。It is a figure which shows the press state of the processing tool to the board | plate material just before completion | finish of spinning shaping | molding. 加工具が成形対象領域の外側端に到達した直後に加工具を板材から引き離した場合の、スピニング成形後の板材を示す図である。It is a figure which shows the board | plate material after spinning shaping | molding at the time of separating a processing tool from a board | plate material immediately after a processing tool reaches | attains the outer side edge of a shaping | molding object area | region. 加工具が成形対象領域の外側端に到達したときに加工具を待機した場合、または加工具が成形対象領域の外側端に到達する少し前から加工具の軸方向送込速度および径方向進行速度を低下させた場合の、スピニング成形後の板材を示す図である。If the processing tool waits when the processing tool reaches the outer end of the molding target area, or the processing tool axial feed speed and radial progress speed slightly before the processing tool reaches the outer end of the molding target area It is a figure which shows the board | plate material after spinning shaping | molding when reducing.

図１は、本発明の一実施形態に係るスピニング成形方法の説明図である。このスピニング成形方法は、板材１を回転させながら加工具３を用いて板材１の成形対象領域Ｒ（図２（ａ）参照）をテーパー状に成形する方法である。   FIG. 1 is an explanatory diagram of a spinning molding method according to an embodiment of the present invention. This spinning forming method is a method of forming the forming object region R (see FIG. 2A) of the plate 1 into a taper shape using the processing tool 3 while rotating the plate 1.

板材１は、例えばフラットな円形状の板である。ただし、板材１の形状は、多角形状や楕円状であってもよい。また、板材１は、必ずしも全面に亘ってフラットである必要はなく、例えば中心部の厚さが周縁部の厚さよりも薄くまたは厚くてもよいし、全体または一部が予めテーパー状に加工されてもよい。板材１の材質は、特に限定されるものではないが、例えばチタン合金である。   The plate material 1 is, for example, a flat circular plate. However, the shape of the plate 1 may be polygonal or elliptical. Further, the plate 1 does not necessarily need to be flat over the entire surface. For example, the thickness of the central portion may be thinner or thicker than the thickness of the peripheral portion, and the whole or a part thereof is processed into a tapered shape in advance. May be. Although the material of the board | plate material 1 is not specifically limited, For example, it is a titanium alloy.

板材１は、回転シャフト２に固定される。すなわち、回転シャフト２の中心線が板材１の回転軸１０である。板材１の回転軸１０は、鉛直方向に平行であってもよいし、水平方向に平行であってもよいし、斜め方向を向いていてもよい。回転シャフト２は、図略の回転機構によって回転させられる。   The plate material 1 is fixed to the rotary shaft 2. That is, the center line of the rotating shaft 2 is the rotating shaft 10 of the plate 1. The rotation axis 10 of the plate 1 may be parallel to the vertical direction, may be parallel to the horizontal direction, or may be directed obliquely. The rotating shaft 2 is rotated by a rotating mechanism (not shown).

本実施形態では、回転シャフト２に成形型（マンドレル）が設けられておらず、スピニング成形開始前だけでなくスピニング成形の途中でも、板材１の中心部のみが回転シャフト２に支持される。すなわち、後述する加工具３の板材１への押圧は、板材１における加工具３が押圧される部分が浮いた状態で行われる。この構成によれば、従来のスピニング成形方法でよく用いられていた成形型（マンドレル）を用いる必要がなく、製造コストを低減することができる。ただし、回転シャフト２に成形型（マンドレル）が設けられていて、スピニング成形中は、板材１における加工具３が押圧される部分が成形型に支持されてもよい。   In the present embodiment, a molding die (mandrel) is not provided on the rotating shaft 2, and only the central portion of the plate material 1 is supported by the rotating shaft 2 not only before spinning molding but also during spinning molding. That is, the pressing of the processing tool 3 to be described later to the plate material 1 is performed in a state where the portion of the plate material 1 where the processing tool 3 is pressed is lifted. According to this configuration, it is not necessary to use a mold (mandrel) often used in the conventional spinning molding method, and the manufacturing cost can be reduced. However, a molding die (mandrel) is provided on the rotating shaft 2, and a portion of the plate 1 to which the processing tool 3 is pressed may be supported by the molding die during spinning molding.

加工具３は、図２（ａ）および（ｂ）に示すように、板材１に押圧されながら、成形対象領域Ｒの内側端（すなわち、成形開始点）Ｒｓから外側端（すなわち、成形終了点）Ｒｅに向かって移動させられる。加工具３は、場所に応じた特定の軸方向送込速度で、板材１の回転軸１０に沿う方向に移動させられて、板材１に押圧される。また、加工具３は、場所に応じた特定の径方向進行速度で、板材１の回転軸１０から垂直に離れる方向に移動させられる。本実施形態では、加工具３として、板材１の回転に追従して回転する成形ローラ３０が用いられている。ただし、加工具３は、成形ローラ３０に限定されず、例えばヘラであってもよい。   As shown in FIGS. 2A and 2B, the processing tool 3 is pressed by the plate member 1 and is moved from the inner end (that is, the molding start point) Rs to the outer end (that is, the molding end point) of the molding target region R. ) It is moved toward Re. The processing tool 3 is moved in a direction along the rotation axis 10 of the plate material 1 at a specific axial direction feeding speed according to the place, and is pressed by the plate material 1. Moreover, the processing tool 3 is moved in the direction away from the rotating shaft 10 of the board | plate material 1 with the specific radial direction advancing speed according to a place. In the present embodiment, a forming roller 30 that rotates following the rotation of the plate 1 is used as the processing tool 3. However, the processing tool 3 is not limited to the forming roller 30, and may be a spatula, for example.

より詳しくは、成形ローラ３０は、板材１の回転軸１０から遠ざかる方向に向かって縮径する断面台形状の形状を有している。すなわち、成形ローラ３０は、回転軸１０側の大径の底面、回転軸１０と反対側の小径の頂き面、およびそれらをつなぐテーパー状の側面３１を有している。つまり、側面３１と底面の間の環状のコーナー部が大径部、側面３１と頂き面の間の環状のコーナー部が小径部である。ただし、加工具３としては、他の断面形状（例えば、断面菱形状や断面長丸状）の成形ローラを用いることも可能である。   More specifically, the forming roller 30 has a trapezoidal shape that is reduced in diameter in a direction away from the rotating shaft 10 of the plate 1. In other words, the forming roller 30 has a large-diameter bottom surface on the rotating shaft 10 side, a small-diameter surface opposite to the rotating shaft 10, and a tapered side surface 31 connecting them. That is, the annular corner portion between the side surface 31 and the bottom surface is the large-diameter portion, and the annular corner portion between the side surface 31 and the top surface is the small-diameter portion. However, as the processing tool 3, it is also possible to use a forming roller having another cross-sectional shape (for example, a cross-sectional rhombus shape or a long cross-sectional shape).

加工具３として断面台形状の成形ローラ３０が用いられた本実施形態では、成形ローラ３０の板材１への押圧が、成形ローラ３０の大径部が板材１に点接触し、かつ、成形ローラ３０の側面３１と板材１の回転軸１０に対する直交面（すなわち、板材１と平行な面）とのなす角度θ（図２（ａ）参照）が１度以上３０度以下となる姿勢に成形ローラ３０を保った状態で行われる。   In the present embodiment in which the forming roller 30 having a trapezoidal cross section is used as the processing tool 3, the pressing of the forming roller 30 to the plate material 1 causes the large diameter portion of the forming roller 30 to make point contact with the plate material 1 and the forming roller. The forming roller has a posture in which an angle θ (see FIG. 2A) formed by a side surface 31 of the plate 30 and a plane perpendicular to the rotation axis 10 of the plate 1 (that is, a plane parallel to the plate 1) is 1 degree or more and 30 degrees or less. It is performed in a state of keeping 30.

さらに、本実施形態では、加工具３の板材１への押圧が、板材１における加工具３が押圧される部分と同一円周上に位置する部分が加熱器４によって局所的に加熱されながら行われる。ここで、「同一円周上」とは、板材１の回転軸１０を中心とするある程度の幅のリング状範囲内に、加工具３が押圧される部分と加熱器４によって加熱される部分とが存することをいう。例えば、板材１の回転軸１０から加工具３が押圧される部分までの距離の±１０％の範囲内に、加熱器４によって加熱される部分が存していてもよい。   Further, in the present embodiment, the processing tool 3 is pressed against the plate material 1 while a portion of the plate material 1 located on the same circumference as the portion where the processing tool 3 is pressed is locally heated by the heater 4. Is called. Here, “on the same circumference” means a portion where the processing tool 3 is pressed and a portion heated by the heater 4 within a ring-shaped range having a certain width around the rotation axis 10 of the plate 1. It means that there exists. For example, the portion heated by the heater 4 may exist within a range of ± 10% of the distance from the rotating shaft 10 of the plate 1 to the portion where the processing tool 3 is pressed.

本実施形態では、加熱器４が板材１を裏側から加熱するように、加熱器４が板材１に対して加工具３と反対側に配置されている。ただし、加熱器４は、板材１を表側から加熱するように、板材１に対して加工具３と同じ側に配置されていてもよい。   In this embodiment, the heater 4 is arrange | positioned with respect to the board | plate material 1 on the opposite side to the processing tool 3 so that the heater 4 may heat the board | plate material 1 from the back side. However, the heater 4 may be arrange | positioned with respect to the board | plate material 1 on the same side as the processing tool 3 so that the board | plate material 1 may be heated from the front side.

加熱器４は、５ｋ〜４００ｋＨｚの高周波数の交流電圧が印加されるコイル部を有する高周波誘導加熱器であることが望ましい。このような高周波誘導加熱器では、板材１の局所的な加熱を板材１の回転方向に連続的に行うことができるように、コイル部が、板材１の回転方向に延びる、板材１に沿った二重円弧状をなしていることが望ましい。ただし、加熱器４としては、ガスバーナーを用いてもよい。   The heater 4 is desirably a high-frequency induction heater having a coil portion to which a high-frequency AC voltage of 5 k to 400 kHz is applied. In such a high frequency induction heater, the coil portion extends along the plate material 1 extending in the rotation direction of the plate material 1 so that the local heating of the plate material 1 can be continuously performed in the rotation direction of the plate material 1. It is desirable to have a double arc shape. However, a gas burner may be used as the heater 4.

本実施形態のスピニング成形方法では、加工具３が成形対象領域Ｒの外側端Ｒｅに到達すると、加工具３の位置を拘束した状態で板材１を回転させる。図３は、スピニング成形終了直前の板材１への加工具３の押圧状態を示す。従来技術と同様に、加工具３が成形対象領域Ｒの外側端Ｒｅに到達した直後に加工具３が板材１から引き離されると、図４に示すように、板材１における加工具３を引き離した位置に、加工具３の形状に合う窪み（加工具３の押圧跡１１）が形成される。これに対し、本実施形態では、成形対象領域Ｒの外側端Ｒｅで加工具３が待機させられるので、図５に示すように、加工具３の押圧跡１１（図４参照）が形成されることを防止できる。   In the spinning molding method of this embodiment, when the processing tool 3 reaches the outer end Re of the molding target region R, the plate material 1 is rotated in a state where the position of the processing tool 3 is constrained. FIG. 3 shows a pressing state of the processing tool 3 against the plate 1 immediately before the end of spinning molding. Similar to the prior art, when the processing tool 3 is pulled away from the plate 1 immediately after the processing tool 3 reaches the outer end Re of the molding target region R, the processing tool 3 in the plate 1 is pulled away as shown in FIG. A recess (press mark 11 of the processing tool 3) that matches the shape of the processing tool 3 is formed at the position. On the other hand, in this embodiment, since the processing tool 3 is made to stand by at the outer end Re of the molding target region R, as shown in FIG. 5, a press mark 11 (see FIG. 4) of the processing tool 3 is formed. Can be prevented.

ところで、板材１における加工具３が押圧される部分よりも外側部分は、加工具３に向かって反り上がることもある。これに対し、断面台形状の成形ローラ３０を用い、成形ローラ３０の姿勢を本実施形態のように保てば、板材１の外側部分の反り上がりを成形ローラ３０の側面３１で規制することができる。   By the way, an outer portion of the plate 1 than the portion where the processing tool 3 is pressed may warp toward the processing tool 3. On the other hand, if the forming roller 30 having a trapezoidal cross section is used and the posture of the forming roller 30 is maintained as in the present embodiment, the warping of the outer portion of the plate material 1 can be restricted by the side surface 31 of the forming roller 30. it can.

（変形例）
本発明は上述した実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変形が可能である。 (Modification)
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

例えば、前記実施形態では、加工具３が成形対象領域Ｒの外側端Ｒｅに到達したときに加工具３を待機させたが、外側端Ｒｅの近傍では加工具３の軸方向押込速度および径方向進行速度を低下させてもよい。例えば、加工具３が成形対象領域Ｒの外側端Ｒｅに隣接する終了近接点に到達したときに加工具３の軸方向送込速度および径方向進行速度を終了近接点に到達する前の半分以下に低下させてもよい。   For example, in the above-described embodiment, when the processing tool 3 reaches the outer end Re of the molding target region R, the processing tool 3 is put on standby, but in the vicinity of the outer end Re, the axial pushing speed and the radial direction of the processing tool 3 are set. You may reduce advancing speed. For example, when the processing tool 3 reaches the end proximity point adjacent to the outer end Re of the molding target region R, the axial feed speed and the radial direction traveling speed of the processing tool 3 are less than half before reaching the end proximity point. It may be lowered.

上記の構成によれば、成形対象領域Ｒの外側端Ｒｅの近傍では板材１がゆっくりと加工されるので、図５に示すように、加工具３の押圧跡１１（図４参照）が形成されることを防止できる。   According to said structure, since the board | plate material 1 is processed slowly in the vicinity of the outer side edge Re of the shaping | molding object area | region R, as shown in FIG. 5, the press trace 11 (refer FIG. 4) of the processing tool 3 is formed. Can be prevented.

また、板材１への加工具３の押圧は、板材１を局所的に加熱する代わりに、板材１を全体的に加熱した状態で、または板材１を加熱せずに、行ってもよい。ただし、前記実施形態のように、板材１を局所的に加熱すれば、板材１を加熱しない場合や板材１を全体的に加熱する場合に比べて、板材１における加工具３が押圧される部分を集中的に加工することができる。このため、所望の形状を得るための加工具３の操作が容易となる。   Moreover, you may perform the press of the processing tool 3 to the board | plate material 1 in the state which heated the board | plate material 1 instead of heating the board | plate material 1 locally, or without heating the board | plate material 1. FIG. However, if the plate material 1 is locally heated as in the above-described embodiment, the portion in which the processing tool 3 is pressed in the plate material 1 is compared with the case where the plate material 1 is not heated or the plate material 1 is heated as a whole. Can be processed intensively. For this reason, operation of the processing tool 3 for obtaining a desired shape becomes easy.

１ 板材
１０ 回転軸
３ 加工具
３０ 成形ローラ
３１ 側面 DESCRIPTION OF SYMBOLS 1 Plate material 10 Rotating shaft 3 Processing tool 30 Forming roller 31 Side surface

Claims (5)

板材を回転させながら加工具を用いて前記板材の成形対象領域をテーパー状に成形するスピニング成形方法であって、
前記加工具を、前記板材に押圧しながら前記成形対象領域の内側端から外側端に向かって移動させ、前記外側端では前記加工具の位置を拘束した状態で前記板材を回転させる、スピニング成形方法。 A spinning molding method for forming a molding target region of the plate material into a tapered shape using a processing tool while rotating the plate material,
A spinning molding method in which the processing tool is moved from an inner end to an outer end of the molding target area while being pressed against the plate material, and the plate material is rotated while the position of the processing tool is constrained at the outer end. . 板材を回転させながら加工具を用いて前記板材の成形対象領域をテーパー状に成形するスピニング成形方法であって、
前記加工具を、前記板材に押圧しながら前記成形対象領域の内側端から外側端に向かって移動させ、前記外側端の近傍では前記加工具の軸方向送込速度および径方向進行速度を低下させる、スピニング成形方法。 A spinning molding method for forming a molding target region of the plate material into a tapered shape using a processing tool while rotating the plate material,
The processing tool is moved from the inner end to the outer end of the molding target region while being pressed against the plate material, and the axial feeding speed and the radial traveling speed of the processing tool are reduced in the vicinity of the outer end. Spinning molding method. 前記加工具の前記板材への押圧を、前記板材における前記加工具が押圧される部分と同一円周上に位置する部分を局所的に加熱しながら行う、請求項１または２に記載のスピニング成形方法。   The spinning forming according to claim 1 or 2, wherein the pressing of the processing tool to the plate material is performed while locally heating a portion of the plate material located on the same circumference as the portion to which the processing tool is pressed. Method. 前記加工具は、前記板材の回転軸から遠ざかる方向に向かって縮径する断面台形状の成形ローラであり、前記成形ローラの前記板材への押圧を、成形ローラの大径部が板材に点接触し、かつ、成形ローラの側面と前記板材の回転軸に対する直交面とのなす角度が１度以上３０度以下となる姿勢に前記成形ローラを保った状態で行う、請求項１〜３のいずれか一項に記載のスピニング成形方法。   The processing tool is a forming roller having a trapezoidal cross section whose diameter decreases in a direction away from the rotation axis of the plate material, and the large diameter portion of the forming roller makes point contact with the plate material when the forming roller is pressed against the plate material. In addition, it is performed in a state where the forming roller is maintained in a posture in which an angle formed between a side surface of the forming roller and a plane orthogonal to the rotation axis of the plate material is 1 degree or more and 30 degrees or less. The spinning molding method according to one item. 前記加工具の前記板材への押圧を、前記板材における前記加工具が押圧される部分が浮いた状態で行う、請求項１〜４のいずれか一項に記載のスピニング成形方法。
The spinning molding method according to any one of claims 1 to 4, wherein the processing tool is pressed against the plate material in a state where a portion of the plate material to which the processing tool is pressed is floated.
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