JP6177504B2 - Successive molding equipment - Google Patents

Description

  The present invention relates to a sequential molding apparatus.

  Conventionally, as described in Patent Document 1, as a sequential forming apparatus that processes a metal plate without the need for a mold, a bar-shaped tool is pressed against the plate, and the tool is moved relative to the plate in a three-dimensional direction. In some cases, a molding surface having a three-dimensional shape is sequentially formed on a plate material.

  The conventional sequential forming apparatus presses (or pushes) a tool against a horizontal plate, and relatively moves the tool along one circumference along a contour line of a three-dimensional shape (three-dimensional shape) to be formed of the plate. Is repeated at various points in the height direction of the plate. In other words, based on the three-dimensional shape data of the forming surface of the plate material, the tool is pressed against a certain point in the forming surface of the plate material, and the table holding the plate material by the plate material moving device is moved in the X-axis direction. After the tool is moved in the Y-axis direction by the device, etc., one cycle of machining is performed in which the tool is relatively moved over one circumference along a contour line following a predetermined trajectory with respect to the plate material, and then the tool is fed in a constant amount in the Z-axis direction. The tool is moved by the pitch, the tool is positioned on the next contour line, and the next one cycle of machining is repeated in a wide range of the forming surface from the upper edge to the lower edge of the plate material.

JP2002-1444

  By the way, in the sequential forming apparatus, when the bar-shaped tool is pressed against each point of the forming surface over a wide range of the plate material and sequentially formed, distortion occurs around the tool contact points of the plate material.

  In a conventional sequential forming apparatus, an outer edge surrounding a forming surface of a plate material is held between upper and lower work clamps and a work holder, and the work holder is attached to a table.

  At this time, the work clamp holds the outer edge surrounding the forming surface of the plate material, but does not hold the periphery very close to each contact point of the tool in the forming surface, but the tool contact Generation of distortion around the point cannot be suppressed.

An object of the present invention is to provide a sequential forming apparatus for sequentially forming a tool by moving the tool relative to the forming surface of the plate in a state where the bar-shaped tool is pressed against each point of the forming surface of the plate. The purpose of this is to suppress the occurrence of distortion in the surrounding area.

In the invention according to claim 1, in a state where the bar-shaped tool is pressed against the molding surface of the plate material, the tool is moved relative to the molding surface of the plate material in a three-dimensional direction, and the molding surface forming a three-dimensional shape is sequentially formed on the plate material. in incremental forming apparatus for enabling molding blank holder which forms an annular integral shape on the periphery of the rod-like tool is slidably fitted with respect to the rod-shaped tool, blank holder which forms an annular integral shape, rod-like tool The pressing force is applied to the periphery of the contact point of the bar tool on the forming surface of the plate material that is sequentially formed by the bar tool by being moved in a pressed state, and the distortion of the plate material around the contact point of the bar tool It is made to be possible to suppress the occurrence of.

  The invention according to claim 2 is the invention according to claim 1, further comprising pressurizing means for pressurizing the plate presser in the axial direction of the bar-shaped tool.

  In the invention according to claim 3, in the invention according to claim 1 or 2, the plate press is composed of a plurality of types of plate presses, and each plate press is attached to and removed from the periphery of the bar-shaped tool and used for replacement. Is.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the plate presser further includes a machining position where the tip presser surface is set on the same plane as the tip tool surface of the tool, and a tip presser The surface can be switched to a standby position where the surface is immersed from the tool surface at the tip of the tool.

(Claim 1)
(a) In a sequential forming apparatus, a plate retainer having an annular integral shape is slidably fitted around a rod-shaped tool. Therefore, when the bar-shaped tool is pressed against each point of the plate forming surface and sequentially formed, the ring-shaped plate press has an annular integrated shape, so that the entire circumference around the contact point of the bar tool with respect to the plate forming surface is formed. A pressing force can be exerted on the crossing periphery to hold and hold the periphery, and the generation of distortion in the periphery around the entire circumference of the tool contact point can be reliably suppressed.

(Claim 2)
(b) Pressurizing means for pressurizing the plate presser in the axial direction of the bar-shaped tool. The pressurizing force of the pressurizing means can ensure the stable holding and holding action of the plate material by the plate presser.

(Claim 3)
(c) The plate retainer is composed of a plurality of types of plate retainers, and each plate retainer is attached to and removed from the periphery of the bar-shaped tool. By using the plate presser provided with the tip pressing surface corresponding to the peripheral shape of the tool contact point on the molding surface of the plate material, it is possible to effectively suppress the occurrence of distortion around the tool contact point.

(Claim 4)
(d) The plate pressing can be switched between a machining position where the tip pressing surface is set on the same surface as the tool tip surface of the tool and a standby position where the tip pressing surface is immersed from the tool tip tool surface. . By setting the tip pressing surface of the plate press to the lower position, a large-diameter tool in which the plate press is combined with the tool is formed, and the plate material can be sequentially formed with this large-diameter tool. By setting the tip pressing surface of the plate presser to the standby position, the plate material can be sequentially formed with a small-diameter tool consisting of only the tool. That is, a plurality of tool diameters of a large-diameter tool and a small-diameter tool can be used by combining a plate press with a single tool.

FIG. 1 is a schematic view showing a successive molding apparatus. FIG. 2 is a schematic view showing a main part in a sequential molding state by the successive molding apparatus. FIG. 3 is a perspective view showing the rod-shaped tool of Example 1. FIG. FIG. 4 is a cross-sectional view showing a rod-shaped tool. FIG. 5 is a cross-sectional view showing the plate presser. FIG. 6 is a cross-sectional view showing a bar-shaped tool of Example 2. FIG. 7 is a cross-sectional view showing a rod-shaped tool of Example 3. FIG. 8 is a schematic view showing an example of processing a plate material.

Example 1 (FIGS. 1 to 5)
A sequential forming apparatus 100 shown in FIGS. 1 and 2 forms a plate 1 made of an alloy such as an aluminum alloy, a magnesium alloy, a titanium alloy, or a metal into a three-dimensional shape. For example, as shown in FIG. 2, the plate material 1 rises (or falls) from the reference surface 2 in a molding section 2 </ b> A defined inside a reference surface 2 having a three-dimensional shape such as a spherical surface that has already been subjected to primary processing. A convex (or concave) molding surface 3 having a wall portion 3A and a top portion 3T (or bottom portion 3B) intersecting with each other in a three-dimensional shape.

  The sequential forming apparatus 100 relatively moves the plate material 1 and the tool 20 in a three-dimensional direction, the plate material support device 10 that supports the outer edge portion of the plate material 1, the rod-shaped tool 20 (FIGS. 3 and 4) in contact with the plate material 1. And a moving device 30 to be moved.

  The plate material support device 10 includes a support plate 13 supported by, for example, pillars 12 standing at four corners of the upper surface of the table 11 placed on the gantry 10A, and a work attached to the support plate 13 via a support frame 13A (not shown). It consists of the work clamp 15 which clamps and holds the outer edge part of the board | plate material 1 between the holder 14 and the work holder 14. FIG. The work holder 14 includes a holder surface 14 </ b> A that matches the outer edge surface shape of the reference surface 2 in the plate 1. The work clamp 15 includes a clamp surface 15 </ b> A that matches the outer edge surface shape of the reference surface 2.

  The tool 20 has a rod shape arranged so as to be perpendicular to the upper surface of the table 11, for example, and the tip R surface is pressed against the surface of the forming surface 3 of the plate 1 in the frame of the work clamp 15.

  The moving device 30 includes a plate material moving device 31 that controls the position of the table 11 so as to move the plate material 1 in the X-axis direction, and a tool moving device that moves the tool 20 in the Y-axis and Z-axis directions orthogonal to the X-axis direction. 32.

  The successive forming apparatus 100 includes a receiving tool 40 (FIG. 2) that supports the plate material 1 at the same position as the X-axis and Y-axis direction positions of the tool 20 on the back side of the forming surface 3 of the plate material 1 with which the tool 20 contacts. The receiving tool 40 is fixedly supported by the table 11, and is composed of a convex forming jig (molding model) 41 that forms the whole or a main part of the molding surface 3 of the plate 1.

  The successive forming apparatus 100 is configured so that the work holder 14 attached to the support plate 13 and the back side of the forming surface 3 of the plate 1 held by the work clamp 15 are supported by the forming jig 41 and the outer edge of the plate 1. For example, a tension means 16 that always pulls the portion downward in the Z-axis direction with a constant tensile force is provided in the column 12.

  The sequential forming apparatus 100 presses the tool 20 against the surface of the forming surface 3 of the plate 1 and moves the tool 20 relative to the forming surface 3 of the plate 1 in a three-dimensional direction following the forming jig 41. One molding surface 3 is molded into a three-dimensional shape following the molding jig 41.

  Specifically, the sequential molding apparatus 100 is configured such that the tool 20 is formed with a molding section 2A (non-linear shape) of the reference surface 2 having a three-dimensional shape in the plate material 1 with respect to the outer peripheral wall portion 3A of the convex forming surface 3 in the plate material 1. The machining path A is relatively moved along the contour (section), and the tool 20 is moved while being pressed against each point of the forming surface 3 along the machining path A. And this process path | pass is repeated via a predetermined pitch in the direction which cross | intersects the reference plane 2 which makes the three-dimensional shape in the board | plate material 1, and forms wall part 3A sequentially.

  Therefore, in the successive forming apparatus 100, the table 11 and the plate material 1 are turned into the tool 20 by the plate material moving device 31 and the tool moving device 32 based on the data of the three-dimensional shape of the wall portion 3A of the forming surface 3 of the plate material 1. On the other hand, the tool 20 is moved in the Z-axis direction by the tool moving device 32 while being relatively moved in the X-axis and Y-axis directions, and the tool 20 is pressed against each point on the forming surface 3 of the plate 1 along each machining path A. Then, a one-cycle machining pass is performed in which the plate member 1 is relatively moved along the molding section 2A of the reference surface 2 having a three-dimensional shape. Next, the tool 20 is moved by a predetermined pitch in the Z-axis direction, and the tool 20 is subjected to the next one-cycle machining pass from the upper edge to the lower edge of the wall portion 3A of the molding surface 3 of the plate 1. Repeat across.

  The top 3T of the molding surface 3 of the plate 1 is continuous with the machining path near the top 3T of the tool 20 for sequentially forming the wall 3A, for example, the machining path At of FIG. 2, and forms a circular shape together with the machining path At. The tool 20 is formed by a continuous additional pass Bt. Also in this case, the tool 20 is pressed against the plate 1 based on the data of the three-dimensional shape of the wall 3A and the top 3T of the molding surface 3 of the plate 1, and the table 11 and the plate 1 are pressed by the plate moving device 31 and the tool moving device 32. Is moved relative to the tool 20 in the X-axis and Y-axis directions, and the tool moving device 32 moves the tool 20 in the Z-axis direction.

  However, in the sequential forming apparatus 100, when the tool 20 is pressed against each point of the forming surface 3 of the plate 1 and sequentially formed, in order to suppress the occurrence of distortion around the tool contact point K of the plate 1, The tool 20 was provided with the following configuration.

  That is, as shown in FIGS. 3 and 4, the tool 20 includes an R-surface-shaped small-diameter tool surface 23 at the tip of a shaft portion 22 fixedly provided on the main body portion 21.

  Further, the tool 20 is slidably fitted in the center hole of the annular (or cylindrical) plate retainer 50 around the shaft portion 22. As shown in FIG. 5, the plate retainer 50 includes a flange portion 51 at the base end of the annular body, a large-diameter retaining surface 52 having an R-surface shape at the distal end of the annular body, and a gap between the flange portion 51 and the retaining surface 52. The slide cylinder 53 is used.

  The tool 20 screws and fixes the housing part 24 to the outer periphery of the main body part 21, and the flange part 51 of the plate presser 50 is slidably received inside the housing part 24, and in the opening 24 </ b> A of the housing part 24. While the slide cylinder 53 of the plate presser 50 is slidably inserted, the presser surface 52 of the plate presser 50 can be moved forward and backward in the axial direction of the shaft portion 22.

  The tool 20 includes a pressurizing unit 60 that pressurizes the plate presser 50 in the axial direction of the shaft portion 22. The pressurizing means 60 is configured by, for example, a coil spring 61 built in the pressurizing chamber 25 in which the housing portion 24 is partitioned on the back side of the flange portion 51 of the plate presser 50. The coil spring 61 is compressed between the end surface of the main body portion 21 and the end surface of the flange portion 51 of the plate retainer 50 and is incorporated.

  When the tool 20 is in a free state, as shown in FIGS. 3A and 4A, the flange portion 51 of the plate retainer 50 is brought into contact with the stepped surface 24B near the opening of the housing portion 24 by the spring force of the coil spring 61. Then, the holding surface 52 of the plate holder 50 is set on the same plane as the tool surface 23. Here, “on the same plane” of the tool surface 23 of the tool 20 and the pressing surface 52 of the plate presser 50 is the center at which the presser surface 52 of the plate presser 50 is fitted to the shaft portion 22 of the tool 20 in the plate presser 50. The surface 52i (FIG. 5) drawn on the assumption that it extends continuously to the hole region and the tool surface 23 of the tool 20 are in contact with each other.

  In the sequential forming apparatus 100, when the tool surface 23 of the tool 20 is pressed against each point of the forming surface 3 of the plate member 1 to form the forming surface 3 sequentially, it is shown in FIGS. 3 (B) and 4 (B). As shown, the coil spring 61 is compressed while pressing the pressing surface 52 of the plate pressing member 50 fitted around the shaft portion 22 of the tool 20 around the tool contact point K on the molding surface 3 of the plate material 1. The holding surface 52 of the plate holder 50 is immersed from the tool surface 23 of the tool 20. At this time, the pressing surface 52 of the plate pressing member 50 exerts a pressing force due to the spring force of the coil spring 61 on the periphery of the tool contact point K on the molding surface 3 of the plate member 1, and the plate member 1 around the tool contact point K. Suppresses the occurrence of distortion.

According to the present embodiment, the following operational effects can be obtained.
(a) In the sequential forming apparatus 100, a plate presser 50 is slidably fitted around the rod-shaped tool 20. Accordingly, when the bar-shaped tool 20 is pressed against each point on the forming surface of the plate 1 and sequentially formed, the plate presser 50 fitted around the tool 20 is located around the tool contact point K of the plate 1 in the immediate vicinity. It is possible to hold down and suppress the occurrence of distortion around the tool contact point K.

  (b) A pressurizing means 60 for pressurizing the plate presser 50 in the axial direction of the rod-shaped tool 20 is provided. By the pressing force of the pressurizing means 60, it is possible to ensure a stable and reliable operation of holding and holding the plate material 1 by the plate presser 50.

  Note that the sequential forming apparatus 100 can prepare a plurality of types of plate pressers 50A to 50C as shown in FIG. The plate holders 50 </ b> A to 50 </ b> C are attached to and removed from the periphery of the shaft portion 22 of the tool 20. The plate holder 50A is a spherical type having a spherical holding surface 52, the plate holder 50B is a bull nose type having a flat pressing surface 52, and the plate holder 50C is an eccentric type having an eccentric spherical holding surface 52. . By using the plate presser 50 (50A to 50C) having the tip pressing surface 52 corresponding to the peripheral shape of the tool contact point K on the molding surface 3 of the plate material 1, the generation of distortion around the tool contact point K is generated. It can be effectively suppressed.

Example 2 (FIG. 6)
The second embodiment differs from the first embodiment in that a pneumatic or hydraulic fluid pressure supply line 62 is provided as a pressurizing means 60 for pressurizing the plate presser 50 in the axial direction of the tool 20 as shown in FIG. It is in. A fluid pressure of an appropriate pressure is sealed in a pressurizing chamber 25 formed on the back side of the plate presser 50 by the housing portion 24 of the tool 20, so that the plate presser 50 is placed around the tool contact point K on the molding surface 3 of the plate 1. The pressing force exerted by the pressing surface 52 can be adjusted.

Example 3 (FIG. 7)
The third embodiment is different from the second embodiment in that the housing portion 24 of the tool 20 supplies an appropriate fluid pressure to the pressurizing chamber 25 formed on the back side of the flange portion 51 of the plate retainer 50, and the housing 20 The compression coil spring 63 is interposed between the opening-side step surface 24 </ b> B of the portion 24 and the flange portion 51 of the plate retainer 50.

  By applying a high pressure to the pressurizing chamber 25 and compressing the coil spring 63, as shown in FIG. 7A, the pressing surface 52 of the plate pressing member 50 is positioned on the same surface as the tool surface 23 of the tool 20. Can be set to position. On the other hand, by supplying a low pressure to the pressurizing chamber 25 and extending the coil spring 63, the pressing surface 52 of the plate pressing member 50 is immersed from the tool surface 23 of the tool 20 as shown in FIG. Can be switched to the standby position.

  By setting the tip pressing surface 52 of the plate presser 50 at the lower position, a large diameter tool 20A (FIG. 7A) is formed by combining the plate presser 50 with the tool 20, and the plate material 1 is formed by the large diameter tool 20A. Sequential molding is possible. By setting the front end pressing surface 52 of the plate presser 50 to the standby position, the plate material 1 can be sequentially formed by the small-diameter tool 20 </ b> B (FIG. 7B) consisting only of the tool 20. That is, by combining the plate presser 50 with a single tool 20, a plurality of tool diameters of the large diameter tool 20A and the small diameter tool 20B can be used. The large-diameter tool 20A and the small-diameter tool 20B can be used properly according to the molding curvature of different parts of the molding surface 3 in the plate material 1. Moreover, even if it is the same site | part of the shaping | molding surface 3 in the board | plate material 1, when a shaping | molding curvature is large, the large-diameter tool 20A will process a large curvature radius, and the small-diameter tool 20B will process a small curvature radius gradually. It is also possible to obtain a molding surface 3 having a target curvature.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. Around the rod-shaped tool, not only a single plate presser but also a plurality of plate presses such as double and triple can be fitted concentrically.

  Further, as shown in FIG. 8, the plate product sequentially molded by the sequential molding apparatus of the present invention is formed in each of the plurality of molding sections 2A defined inside the reference surface 2 having a planar or three-dimensional shape. Alternatively, the molding surfaces 3 that are independent of each other may be formed. Each molding surface 3 has a wall portion 3A and a top portion 3T (or a bottom portion 3B) intersecting in a rising shape (or falling shape) from the reference surface 2 to form a three-dimensional shape.

  The present invention relates to a sequential forming apparatus that presses a bar-shaped tool against a plate material, moves the tool relative to the plate material in a three-dimensional direction, and sequentially forms a molding surface that forms a three-dimensional shape on the plate material. The plate presser was slidably fitted. Thereby, in the sequential forming apparatus that presses the bar-shaped tool against each point on the forming surface of the plate material and sequentially forms it, it is possible to suppress the occurrence of distortion around the tool contact point of the plate material.

DESCRIPTION OF SYMBOLS 1 Board | plate material 3 Forming surface 10 Board | plate material support apparatus 20 Bar-shaped tool 23 Tool surface 30 Moving apparatus 50 Plate pressing 52 Pressing surface 60 Pressing means

Claims (4)

Rod-like tool was moved relatively the tool in a state of pressing the molding surface of the plate material in a three-dimensional direction with respect to the molding surface of the plate material, in the incremental forming apparatus for sequentially moldable molding surfaces forming a three-dimensional shape to the plate ,
A plate retainer that forms an annular shape around the rod-shaped tool is slidably fitted to the rod-shaped tool,
Blank holder which forms an annular integral shape, exerts a pressing force on the periphery of the contact point of the rod-shaped tool in the molding surface of the plate that are sequentially formed by rod-shaped tool and the relative movement in a state where the rod-like tool was pressed, A sequential forming apparatus characterized in that it is possible to suppress the occurrence of distortion of the plate material around the contact point of the bar-shaped tool.   The successive forming apparatus according to claim 1, further comprising a pressurizing unit that pressurizes the plate presser in an axial direction of the rod-shaped tool. The plate press consists of multiple types of plate presses,
The successive forming apparatus according to claim 1 or 2, wherein each plate presser is attached to and removed from the periphery of the bar-shaped tool.   The plate presser can be switched between a machining position where the tip pressing surface is set on the same plane as the tool tip surface of the tool and a standby position where the tip pressing surface is inserted from the tool tip surface of the tool. The sequential shaping | molding apparatus in any one of 1-3.

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