JP2003245727A - Successive forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the efficiency of a trimming step and a cauking step subsequent to successive forming by the utilization of a successive forming apparatus and to simply conduct the successive forming of a part such as a concave, which cannot be seen from the Z-axial direction as the pressing direction of a rod pressing member, unattainable by conventional successive forming. <P>SOLUTION: A formed part after forming a work plate 1 into a three- dimensional shape has a concave 4, as shown in A, which cannot be seen from the Z-axial direction. As shown in B, the leading end of a pressing member is used as a swivel tool 20, and a multiaxial tiltable head 24 is used as a rod- shaped pressing member. While tilting the head part 24 to give a proper angle to the side of the concave 4, the inner wall 5, ceiling wall 6 and bottom wall 7 of the concave are subjected to successive forming for successive forming the concave 4. The other faces, which can be seen from the Z-axial direction, such as a side face 2 and a top part 3, are subjected to conventional successive forming in such a manner that the axis of the rod-shaped pressing member 10 or the head 24 is made to be in parallel with the Z-axial direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD This application relates to an apparatus used for sequential molding. Sequential molding is a known method of molding a predetermined solid shape such as a shell shape by relatively moving a plate member and a pressing member while pressing a pressing member having a rod shape or a convex shape or a concave shape against a metal thin plate or the like. Say.
In the present invention, the two orthogonal axial directions in the plane of the plate material before forming are XY, and the axial directions orthogonal to these are Z.

[0002]

2. Description of the Related Art Such sequential molding and apparatus are disclosed in WO99.
No. 5/38627, etc.
In No. 42328, the plate material is held horizontally on four sides by creases, a convex pressing member having a convex shape is pushed up from below to perform preliminary drawing into a rough shape, and a plate pressing member is pressed from above. Is moved in the XY directions, and the pressing member is moved in the Z direction to form a desired three-dimensional shape.

[0003]

In the conventional successive forming, since the rod-shaped pressing member is pressed against the plate material to be processed from the Z-axis direction and plastically deforms, a recess or the like which cannot be seen through from the Z-axis direction cannot be successively formed. Or, it is necessary to perform extremely difficult forming such that the plate material to be processed is tilted and supported irregularly. Therefore, it is a first object to provide a device that can easily successively mold even such a portion. In addition, when trimming or caulking work is performed after successive forming, the plate material to be processed is reattached to a dedicated table each time, and more work is required with a dedicated laser cutting means or caulking tool, so high cost is required. Became. Therefore, a second object is to improve the efficiency of such molding work.

[0004]

In order to solve the above-mentioned problems, a successive forming apparatus according to a first aspect of the present invention forms a predetermined three-dimensional shape by pressing a rod-shaped pressing member against a plate material to be plastically deformed. In the successive forming device, the rod-shaped pressing member is movable relative to the plate material to be processed in three orthogonal directions, and the tip end of the rod-shaped pressing member is tiltable with respect to the base. Characterize.

According to a second aspect of the present invention, in the successive forming device for forming a predetermined three-dimensional shape by pressing a rod-shaped pressing member against a plate member to be processed to plastically deform the rod-shaped pressing member, It is characterized in that it is movable in the directions of three orthogonal axes, and the tip end portion of the rod-shaped pressing member is a processing portion used for processing different from pressing in successive forming.

[0006]

According to the invention of claim 1, the rod-shaped pressing member is made relatively movable in the directions of three axes orthogonal to the plate material to be processed, and the tip end portion of the rod-shaped pressing member is tilted with respect to the base portion. Since the rod-shaped pressing member is provided freely, the recessed portion or the like in the base portion of the rod-shaped pressing member that cannot be seen in the axial direction is sequentially formed by tilting the tip end portion of the rod-shaped pressing member and pressing it from the side. This makes it possible to easily successively form even recesses or the like in the base of the rod-shaped pressing member that cannot be seen in the axial direction.

According to the second aspect of the present invention, since the tip end portion of the rod-shaped pressing member is a processed portion other than the pressing portion for successive molding, trimming or caulking is performed using the tip end portion of the rod-shaped pressing member after successive molding. Since molding such as molding can be performed, molding efficiency can be improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings. FIG. 1 shows the sequential forming according to the present embodiment, and A shows a predetermined three-dimensional shape that is sequentially formed, and is obtained by sequentially forming the plate material 8 whose periphery is fixed. In addition to the side surface 2 and the top portion 3 which are visible from the Z-axis direction, the molding portion has a concave portion 4 which is not visible from the Z-axis direction and is opened to the side in the drawing.
Have. As shown in FIG. 2B, this portion is formed by a part of the free tool 20 provided on the rod-shaped pressing member as a rod-shaped tiltable head portion 24, and the head portion 24 is used for molding.

In this molding, the head portion 24 is bent at an appropriate angle such as a right angle and pressed against the side surface 2 from the side, and the plate material 1 to be processed is moved in the Z and Y axis directions to draw contour lines by the pressing portion, When the contour line is completed, the plate material 1 to be processed is shifted in the X-axis direction by a predetermined pitch to draw the contour line again, and by repeating this, the concave portion 4 is formed by successive molding. At this time, the recess inner wall 5, the ceiling wall 6, and the bottom wall 7 are also molded.

Other surfaces such as the side surface 2 and the top portion 3 that can be seen in the Z-axis direction are pressed against the general rod-shaped pressing member 10 not provided with the free tool 20 from the Z-axis direction, while the plate material 1 is processed in the XY-axis directions. It can be formed by successive molding in which the contour line is drawn by moving to, and then the contour line is drawn again by shifting a predetermined pitch in the Z-axis direction. Instead of the rod-shaped pressing member 10, it is possible to successively form all the surfaces with the free tool 20 as it is.

2B shows a perspective view of the universal tool 20, which is attached to and integrated with the tip of the rod-shaped pressing member 10 shown in FIG. 2A. The rod-shaped pressing member 10 is relatively movable with respect to the plate material 8 to be processed in three orthogonal directions of XYZ. On the other hand, the universal tool 20 is UVW around the XYZ 3 axes.
It is possible to turn in three axial directions.

That is, the universal tool 20 is provided with a main body mounting portion 21 that is connected to the base portion 10a of the rod-shaped pressing member 10, and a shaft 22 projecting from this portion is a Z-axis which is the axis of the rod-shaped pressing member 10 by the first motor 23. It can rotate around.

Further, a head portion 24 is provided on the shaft 22 by a second motor 25 so as to be swingable at a free angle with respect to the Z-axis, so that the head portion 24 can be swiveled in three UVW directions. Become. The head portion 24 is a conical roller rotatable about its axis 26, and its outer peripheral surface 2
7 is a slope.

As described above, by providing the tiltable head portion 24 and performing the successive molding while changing the tilt angle, it is possible to easily perform the successive molding even for a portion which cannot be successively molded by the conventional method or which requires much labor. Become. Further, if all surfaces are successively molded with the free tool 20 as it is, it is not necessary to replace the tip portion, so that molding can be made efficient.

Next, a second embodiment will be described with reference to FIGS. FIG. 3 shows an outline of the plastic working which is the target of the present embodiment. A metal skin panel 30 which is a member to be worked and a frame panel 31 made of metal or the like are stacked to reinforce the work, and the periphery of the skin panel 30 is stacked. A vertical flange (described later) formed on the above is bent and crimped to produce an integrated comp panel 32. The skin panel 30 is sequentially molded, and the frame panel 31 is previously molded by press molding or sequential molding.

FIG. 4 shows the successive molding of the skin panel 30, and the table 40 which is also used for the subsequent caulking work is a simple mold made of concrete or the like. 42 is formed. Around 4
An inclined surface 43 of 5 ° is formed. A work plate 1 made of an appropriate material such as a metal such as an iron plate that can be plastically deformed is placed on this, and the periphery thereof is fixed by a clamp 44.

The work plate 1 is integrated with the table 40 so that it can be freely moved in a total of three axis directions, namely, the XY axis directions orthogonal to each other in the pre-machining plane of the work plate 1 and the Z axis direction orthogonal to these. Has become. The table 40 is independently movable in the Z-axis direction. A rod-shaped pressing member 10 is movably provided in the Z-axis direction above the plate material 1 to be processed, and when pressed against the plate material 1 to be processed, the pressing portion is plastically deformed.

The movement of the plate 1 to be processed by the table 40 is carried out by drawing a contour line in the XY plane so that the plate 1 to be processed can be molded into a predetermined three-dimensional shape by pressing the rod-shaped pressing member 10. The movement is controlled by a controller (not shown) so as to perform successive molding in which the contour lines are formed in the Z-axis direction at equal pitches or unequal pitches (hereinafter, referred to as Z-direction pitches) every time the contour line formation is completed.

By the above-mentioned sequential molding, the curved surface portion 41 and the molding concave portion 42 of the table 40 are molded into a curved surface shape as shown in the figure. Then, as shown in FIG. 5, the rod-shaped pressing member 10
Attach the cutter 11 in place of or around the tip of
The plate material 1 is pressed against the trim portion 13 so that the caulking flange 12 is left around the plate material to be cut, and the plate material 1 is moved in the XY plane in the same manner as during successive molding, thereby cutting and trimming the entire circumference. To obtain the skin panel 30.

FIG. 6 shows a caulking process with the frame panel 31, and the skin panel 30 placed on the table 40.
The frame panel 31 is placed on the upper surface, and the caulking flange 12 of the skin panel 30 is bent by the universal tool 20 replaced with the cutter 11.

In the caulking in FIG. 6, the head portion 24 is tilted so that the axis line 26 is directed to the lower left in the drawing, and the caulking flange 12 is slightly bent upward by the outer peripheral surface 27 from the outer peripheral portion of the frame panel 31 as a starting point. In this state, the plate material 1 to be processed is moved in the XY plane to deform the entire circumference in the same manner.

FIG. 7 is an enlarged view of the caulking process in the caulking flange portion following FIG.
The caulking flange 12 is bent at a substantially right angle by inclining and pressing so that 7 becomes substantially vertical. This is formed on the entire circumference in the same manner as above (the same applies hereinafter).

In B, the head portion 24 is tilted so that the axis 26 is directed to the lower right in the figure, so that the caulking flange 12 is bent approximately 45 ° onto the peripheral portion of the frame panel 31.
After the preliminary caulking of each step shown in FIGS. 4 and 6A, the axis 26 is made substantially horizontal at C, so that the caulking flange 12 is folded back to the peripheral portion of the frame panel 31 to be in close contact therewith for main caulking. As a result, as shown in D,
The skin panel 30 and the frame panel 31 are integrated by caulking via the caulking flange 12.

As described above, the flexible tool 20 is provided at the tip of the rod-shaped pressing member 10, and the rod-shaped pressing member 10 is used as a multi-axis movable head portion 24, and its outer peripheral surface 27 is used as a processing portion. Thus, the trim forming and the caulking work can be performed by using the sequential forming device, and the forming time can be shortened and the forming efficiency can be improved. Further, since the table 40 can be used in common, labor such as mold change is unnecessary, and in this respect also, the molding work is made efficient.

The free tool 20 is mounted on the Z of the head portion 24.
Since the tilting angle with respect to the axis can be changed freely, it is possible to perform work with different machining angles using only the same free tool 20.
Particularly, in the case of caulking work, it is possible to perform the caulking work by changing the angle between the pre-caulking and the book caulking, so that it is possible to prevent the skin panel 30 and the frame panel 31 from being displaced.

The invention of the present application is not limited to the above-mentioned embodiments, and various modifications and applications are possible within the same principle of the invention. For example, by attaching the flexible tool 20 to a multi-joint member such as a robot arm that is movable in the XYZ triaxial directions, the plate material 1 side is fixedly fixed, and only the flexible tool (bar-shaped pressing member) side is XYZ and UVW axes. It may be movable in any direction.

Further, if the trimming is carried out as a separate step from the sequential forming and the caulking work and the universal tool 20 is used as a rod-shaped pressing member, the sequential forming and the caulking operation can be continuously carried out without attaching or detaching the universal tool. This makes the molding work more efficient.

[Brief description of drawings]

FIG. 1 is a diagram illustrating sequential molding according to a first embodiment.

FIG. 2 is a perspective view showing a flexible tool.

FIG. 3 is a view for explaining the manufacture of the comp panel according to the second embodiment.

FIG. 4 is a diagram showing sequential molding of a skin panel.

FIG. 5 is a diagram showing a trim process.

FIG. 6 is a diagram showing a caulking process.

FIG. 7 is a diagram showing a crimping step following FIG. 6;

[Explanation of symbols]

1: plate material to be processed, 4: concave portion, 10: bar-shaped pressing member, 1
1: Cutter, 12: Caulking flange, 20: Free tool, 24: Head part, 30: Skin panel, 31: Frame panel, 32: Comp panel, 40: Table, 4
1: curved surface portion, 42: molding concave portion, 43: sloped surface portion, 44: clamp

Claims (2)

[Claims] 1. A sequential forming apparatus for forming a predetermined three-dimensional shape by pressing a rod-shaped pressing member against a plate material to be plastically deformed, wherein the rod-shaped pressing member is orthogonal to the plate member in three axes. And a tip end portion of the rod-shaped pressing member that is tiltable with respect to the base portion. 2. A sequential forming device for forming a predetermined three-dimensional shape by pressing a rod-shaped pressing member against a plate material to be plastically deformed, wherein the rod-shaped pressing member is three-axis orthogonal to the plate member to be processed. 1. A sequential molding apparatus characterized in that the tip end portion of the rod-shaped pressing member is a processing portion used for a processing different from the pressing in the sequential molding, while being relatively movable in the direction.