WO2010050059A1

WO2010050059A1 - Bent member manufacturing method, bumper reinforcement manufacturing method and bending apparatus, and bumper reinforcement manufacturing apparatus

Info

Publication number: WO2010050059A1
Application number: PCT/JP2008/069936
Authority: WO
Inventors: 勝雄荒川
Original assignee: 日軽金アクト株式会社
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2010-05-06
Also published as: JP5255648B2; JPWO2010050059A1

Abstract

This bent member manufacturing method uses a core at the time of bending a hollow section and can set an applicable bending radius or bending center axis over a wide range. A core (41) is inserted into the hollow portion of a hollow section (A) for the material of a bent member (B). A finishing face (4A) formed on the side face of the core (41) is positioned in a first bent area (M1) formed at the starting end portion of a working target area (M). In this state, the first bent area (M1) is subjected to a bending work so that an outer edge portion (A2) of the first bent area (M1) is worked into a shape along the finishing face (4A) of the core (41). The core (41) is moved to the trailing end side of the working target area (M), and the finishing face (4A) of the core (41) is positioned in a second bent area (M2) positioned adjacent to the first bent area (M1). In this state, the second bent area (M2) is subjected to a bending work so that the outer edge portion (A2) of the second bent area (M2) is worked into a shape along the finishing face (4A) of the core (41).

Description

Bending member manufacturing method, bumper reinforcement manufacturing method, bending apparatus, and bumper reinforcement manufacturing apparatus

The present invention relates to a bending member manufacturing method, a bumper reinforcement manufacturing method, a bending apparatus, and a bumper reinforcement manufacturing apparatus.

Bumper reinforcement for automobiles is provided for the purpose of reducing damage to passengers or the vehicle body in the event of a collision, and the width direction end of the vehicle body is designed so that it can cope with a collision from an oblique side. The thing bent to the vehicle body side is also known (for example, refer patent document 1).

Bumper reinforcement is made of a material with high strength, and bending for such a material is very difficult. For example, a technique disclosed in Patent Document 2 has been proposed as a technique that enables such bending.

The technique of Patent Document 2 is a bending member manufacturing method in which a curved member is manufactured by curving a straight hollow member, but can be applied to bending a hollow member which is a base of bumper reinforcement. In addition, the manufacturing method of the bending member of patent document 2 is a pair which rotates centering on a horizontal axis in the state which inserted the core which has the outer surface along the shape of a curved part in the inner space part of the both ends of a hollow shape material. The holding member (chuck) holds both ends of the hollow member, and the pressing member (pressing device) reduces the distance between the horizontal axis of one holding member and the horizontal shaft of the other holding member. A pressing force is applied to.

JP 7-61298 A JP-A-6-142805

In the manufacturing method of the bending member of patent document 2, it is necessary to insert a core in the linear part of a hollow shape material before a bending process, and after a bending process, from the curved part formed by bending a linear part. Since it is necessary to remove the core, the dimensions and shape of the core cannot be set freely. As a result, the range of applicable bending radii and bending center angles is limited. In addition, since the tensile force is generated and the chuck needs to be moved to adjust the magnitude, the control becomes complicated.

From this point of view, the present invention is a method of manufacturing a bending member that uses a core for bending a hollow shape member, and can be applied to a wide range of applicable bending radii and bending center angles. It is another object of the present invention to provide a bending apparatus that is suitably used in the method of manufacturing a bending member. It is another object of the present invention to provide a bumper reinforcement manufacturing method and a manufacturing apparatus that can manufacture bumper reinforcement without using complicated means and devices.

In the bending member manufacturing method according to the present invention, a processing target region is provided in a hollow shape member that is a base of the bending member, and bending processing using a core is sequentially performed on a plurality of locations in the processing target region. A method of manufacturing a bending member, wherein a core is inserted into an inner space of the region to be processed, and a finishing surface provided on a side surface of the core is provided at a first end of the region to be processed. In a state of being positioned in the bending region, the first bending region is bent, and the outer edge portion of the first bending region is processed into a shape along the finishing surface of the core. In a state where the core is moved to the end side of the region to be processed and the finishing surface of the core is positioned in the second bending region located next to the first bending region, Bending the outer edge of the second bending region to the finish of the core. Is processed into a shape along cumene, characterized in that.

Further, another bending member manufacturing method according to the present invention provides a machining target region in a hollow shape member that is a base of the bending member, and performs bending using a core at a plurality of locations in the machining target region. A bending member is manufactured by sequentially performing a bending member, and a bending die is positioned inside the region to be processed, and a core is inserted into an inner space of the region to be processed and provided on a side surface of the core In the state where the first preparation process for positioning the finished processing surface in the first bending region provided at the start end of the processing target region and the non-processing target region not subjected to bending using a core are constrained. A finishing surface that presses one bending region and processes an outer edge portion of the first bending region into a shape along the finishing surface of the core, and an inner edge portion of the first bending region is provided in the bending die. A first bending process to form a shape along the core, and the core A second preparatory process in which the finishing surface of the core is moved to the end side of the processing target region and the finishing surface of the core is positioned in a second bending region located next to the first bending region, and the non-processing target region is constrained In this state, the second bending region is pressed, the outer edge portion of the second bending region is processed into a shape along the finishing surface of the core, and the inner edge portion of the second bending region is And a second bending process of processing into a shape along the finishing surface.

In short, the present invention is characterized in that the position of the core inserted into the processing target area of the hollow shape member is sequentially moved, and bending is performed at the moving destination each time the core is moved. In this way, the bending center angle that can be handled can be increased and the bending radius that can be handled can be reduced compared to the case where bending is performed only once with the core inserted. In addition, since the core is used at the bending position, it is possible to suppress the occurrence of buckling, wrinkles, and the like associated with the bending process.

In addition, “bending inside” means a side where compressive stress is generated when bending is performed, and “bending outside” means a side where tensile stress is generated when bending is performed. “Inner edge” and “outer edge” are synonymous with “compressed edge” and “tensile edge” when bending is performed.

In the bending apparatus according to the present invention, a core that is inserted into an inner space of a processing target area of a hollow shape member, a position adjusting unit that inserts and removes the core, and an outer side of the processing target area are provided. A plurality of pressing means, wherein the plurality of pressing means are arranged corresponding to the plurality of bending areas provided in the processing target area, and the plurality of pressing means Each applies a pressing force to the corresponding bending region.

According to the bending apparatus according to the present invention, the position of the core inserted into the processing target region of the hollow shape can be sequentially moved, and bending can be performed each time the core is moved.

Each of the pressing means can be composed of a contact member that contacts the bending region and an actuator that applies a pressing force to the contact member. In this case, it is desirable that the adjacent contact members are connected to each other via a pin so that each contact member can be rotated about the pin.

It is desirable that the position adjusting means is attached to the abutting member that abuts the terminal portion of the processing target area. If it does in this way, it will become possible to insert and remove a core only by pushing and pulling along the direction of the central axis of the core.

In the bumper reinforcement manufacturing method according to the present invention, a processing object region is provided at both ends of a hollow shape material to be a bumper reinforcement, and bending is performed using a core at a plurality of locations in each processing object region. A method of manufacturing bumper reinforcement by sequentially performing processing, wherein a core is inserted into an inner space of each of the processing target regions, and a finish processing surface provided on a side surface of each of the cores In a state where it is positioned in the first bending region provided at the start end of the target region, bending is performed simultaneously on the two left and right first bending regions, and the outer edge portion of each first bending region is the middle Processing the core into a shape along the finishing surface, and then moving each core to the end side of each processing target region, and setting the finishing surface of each core next to the first bending region Second bending area located In the state where it is positioned, it is simultaneously bent to the second bending region at the two left and right, and the outer edge of each second bending region is processed into a shape along the finishing surface of each core, It is characterized by that.

According to the bumper reinforcement manufacturing method of the present invention, the bumper reinforcement can be obtained by simply moving the left and right cores in order and bending them at the same time each time the core is moved. It is not necessary to use a simple means or device.

A bumper reinforcement manufacturing apparatus according to the present invention is a bumper reinforcement manufacturing apparatus in which two bending apparatuses described above are arranged, with respect to both ends of a hollow shape material that is a base of bumper reinforcement. The bending apparatuses are arranged so that bending can be performed at the same time.

According to the bumper reinforcement manufacturing apparatus according to the present invention, the bumper reinforcement manufacturing method described above can be easily realized.

According to the bending member manufacturing method and manufacturing apparatus according to the present invention, it is possible to set a wide range of applicable bending radii and bending center angles.
Moreover, according to the bumper reinforcement manufacturing method and manufacturing apparatus according to the present invention, it is possible to manufacture bumper reinforcement without using complicated means and devices.

(A)-(e) is a schematic diagram which shows the procedure of the manufacturing method of the bumper reinforcement which concerns on embodiment of this invention. It is a top view which shows the manufacturing apparatus of the bending apparatus and bumper reinforcement which concern on embodiment of this invention. It is a perspective view which shows a contact member. It is a top view which shows the procedure of the manufacturing method of the bumper reinforcement which concerns on embodiment of this invention, Comprising: (a) is a 1st preparation process, (b) is a 1st bending process, (c) is a 2nd preparation process, (D) is a figure which shows a 2nd bending process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Bending die 2A Finishing surface 3 Holding means 4 Bending device 41 Core 4A Finishing surface 42 Position adjusting means 43, 44 Pressing means 43a,

44a Contact member

43b, 44b Actuator 10 Bumper reinforcement manufacturing apparatus A Hollow profile A1 Inner edge A2 Outer edge M Processing area M1, M2 Bending area B Bumper reinforcement (curved member)

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.
In addition, in this embodiment, although the case where a bending member is bumper reinforcement is illustrated, it is not the meaning which limits the kind, shape, etc. of a bending member.

The manufacturing method of the bending member (bumper reinforcement) according to the present embodiment is a method of manufacturing a bumper reinforcement in which both end portions in the longitudinal direction (vehicle width direction) are bent toward the vehicle body side. Process target regions M and M are set at both ends of the hollow profile A which is a base of B (see FIG. 1E) (see FIG. 1A), and a plurality of locations within each process target region M are set. In contrast, the bumper reinforcement B is manufactured by sequentially performing bending using the core 41 (see (c) to (e) of FIG. 1).

The hollow shape member A is made of an extruded shape made of an aluminum alloy and includes an outer shell having a rectangular cross section and a reinforcing plate arranged so as to partition a space in the outer shell, although illustration is omitted. Of the wall parts constituting the outer shell, the wall part A1 (see (a) in FIG. 1) that becomes the bent inner side (compressed edge) when the bending process is performed is referred to as the “inner edge part A1”, and the bent outer side. The wall portion A2 (see FIG. 1A) serving as the (tensile edge) is referred to as an “outer edge portion A2”.

The processing target region M is a region to be subjected to bending processing using the core 41 (a region where the core 41 is inserted), and is set to each of both end portions of the hollow profile A in the present embodiment. . The “start end” and “end” of the region M to be processed are based on the longitudinal direction (extrusion direction) of the hollow profile A, and the longitudinal direction center side (back side) of the hollow profile A is the “start end”. The end face side of A is the “termination”. In addition, the area | region (the center part of a longitudinal direction in this embodiment) which does not perform the bending process using the core 41 among the hollow shape materials A is called "non-process object area | region S".

In this embodiment, bending is performed at a plurality of locations in the processing target region M. Hereinafter, each location where bending is performed is referred to as a “bending region”. As shown in FIG. 1B, the processing target region M includes a plurality of (two in the present embodiment) bending regions M1 and M2. Of the plurality of bending regions M1 and M2, In some cases, the bending region M1 positioned at the start end of the processing target region M is referred to as a “first bending region M1”, and the bending region M2 positioned adjacent to the first bending region M1 is referred to as a “second bending region M2.” is there.

First, the configuration of the bumper reinforcement manufacturing apparatus 10 capable of realizing the above manufacturing method will be described with reference to FIG.
The manufacturing apparatus 10 includes a pedestal 1, a bending die 2, a holding unit 3, and left and

right bending apparatuses

4 and 4.

The pedestal 1 is a bending work table, and the bending die 2, the holding means 3, and the

bending devices

4 and 4 are arranged on the upper surface of the pedestal 1.

The bending die 2 is a member that constrains the bending inner side of the hollow shape member A and that forms the inner edge A1 of the processing target region M into a predetermined bending shape, and is fixed to the upper surface of the base 1. The bending die 2 of the present embodiment includes a main body portion 21 that faces the non-processing target region S and

processing portions

22 and 22 that face the processing target region M.

The main body 21 abuts on the inner edge A1 of the non-processing target region S when bending is performed, and sandwiches the hollow member A together with the holding means 3.

The processing part 22 is a part that molds the inner edge A1 of the processing target region M into a predetermined finished shape. On the side surface of the processing portion 22, a finishing surface 2 </ b> A made of a refracted plane is formed. The finishing surface 2A is in contact with the inner edge A1 of the region to be processed M during bending, and serves as a mold for forming the inner edge A1 of the region to be processed M into a predetermined finished shape. The illustrated finished surface 2A is refracted at two locations corresponding to performing bending in two stages. The shape of the finishing surface 2A may be set in consideration of the finished shape of the inner edge A1 of the processing target region M, the spring back, and the like. Although illustration is omitted, the finishing surface 2A may be formed into a curved surface.

The holding means 3 is a means for restraining the bending outer side of the hollow profile A and is installed on the upper surface of the base 1. The holding means 3 of this embodiment includes a pressing member 31 that faces the main body 21 of the bending die 2 and

actuators

32 and 32 that apply a pressing force to the pressing member 31.

The holding member 31 abuts on the outer edge A2 of the non-processing target region S when bending is performed, and holds the hollow member A together with the bending die 2. The pressing member 31 of the present embodiment is slidably supported on the upper surface of the pedestal 1 and approaches or separates from the bending die 2.

The actuator 32 is used when the pressing member 31 is pressed against the non-processing target region S. The actuator 32 of the present embodiment is configured to include a hydraulic cylinder, and is connected to the presser member 31 via a piston that slides in the cylinder.

The bending apparatus 4 performs bending on a plurality of bending areas M1, M2 provided in the processing target area M. The left and

right bending apparatuses

4 and 4 are arranged at positions where the both ends (processing target areas M and M) of the hollow profile A can be bent simultaneously.

The bending apparatus 4 of the present embodiment includes a core 41 that is inserted into the inner space of the processing target region M, a position adjusting unit 42 that inserts and removes the core 41, and a bending outer side of the processing target region M. A plurality of (two in this embodiment) pressing means 43, 44.

The core 41 is for forming the processing target region M into a predetermined finish shape while suppressing the crushing and buckling of the processing target region M, and is formed on the base end side of the main body 41a and the main body 41a. The latching | locking part 41b was provided.

The main body 41a has a cross-sectional shape that just fits in the inner space of the processing target region M. A finishing surface 4A made of a refracted plane is formed at the tip of the main body 41a. The finishing surface 4A is formed on the side surface on the outer side of the bending of the main body 41a, and comes into contact with the outer edge A2 of the region M to be processed from the inner side, and is used when the outer edge A2 is formed into a predetermined finished shape. It becomes. The shape of the finished surface 4A may be set in consideration of the finished shape of the outer edge portion A2, the spring back, and the like. Although illustration is omitted, the finished surface 4A may be formed into a curved surface.

The locking portion 41b is a portion protruding from the main body portion 41a, and regulates the maximum insertion amount of the core 41 by contacting the end face of the hollow shape member A.

The position adjusting means 42 includes a hydraulic cylinder, and is connected to the base end portion of the core 41 via a rod that slides in the cylinder. The position adjusting means 42 is attached to a contact member 44a of the pressing means 44 described later, and the rod advances and retreats along the longitudinal direction of the contact member 44a. When the core 41 is inserted into the inner space of the processing target area M, the rod of the hydraulic cylinder may be moved forward. When the core 41 is extracted from the processing target area M, the rod may be moved backward.

The pressing means 43 and 44 apply a pressing force to the bending regions M1 and M2, and are arranged corresponding to the bending regions M1 and M2. Although the basic configuration of the two

pressing means

43 and 44 is the same, in the following, the pressing means 43 adjacent to the pressing member 31 is referred to as “first pressing means 43” and is adjacent to the first pressing means 43. The pressing means 44 may be referred to as “second pressing means 44”.

The first pressing means 43 presses the bending region M1 from the outside of the bending, and includes a contact member 43a that contacts the bending region M1 and an actuator 43b that applies a pressing force to the contact member 43a. Yes.

As shown in FIG. 3, the abutting member 43 a is connected to the pressing member 31 via a pin 45 and rotates around the pin 45 as a central axis. The pin 45 is provided at the end of the abutting member 43a on the pressing member 31 side. The contact member 43a in a state aligned with the presser member 31 (the state shown in FIG. 4A) rotates in a direction close to the bending die 2 (the direction indicated by the arrow X in FIG. 4A), It does not rotate in the direction away from the bending die 2. Although there is no restriction | limiting in the connection method of the contact member 43a and the presser member 31, in this embodiment, the connection end part 311 of the presser member 31 is inserted between the

connection end parts

431 and 431 of the contact member 43a, and is connected. The

end portions

311 and 431 are vertically overlapped, and the pins 45 are inserted so as to penetrate the connecting

end portions

311 and 431 vertically, thereby connecting the two. Although not shown, for example, a columnar convex portion provided on one end face of the pressing member 31 and the contact member 43a is fitted into a cylindrical (or semi-cylindrical) concave portion provided on the other end face. By doing so, you may connect both.

The actuator 43b is used when pressing the contact member 43a against the hollow member A as shown in FIG. The actuator 43b of this embodiment is configured to include a hydraulic cylinder, and applies a pressing force to the contact member 43a via a piston that slides in the cylinder.

The second pressing means 44 presses the bending region M2 from the outside of the bending, and includes a contact member 44a that contacts the bending region M2 and an actuator 44b that applies a pressing force to the contact member 44a. Yes.

As shown in FIG. 3, the abutting member 44 a is connected to the abutting member 43 a of the first pressing means 43 via the pin 46 and rotates around the pin 46 as a central axis. The pin 46 is provided at the end of the contact member 44a on the first pressing means 43 side. The contact member 44a in a state of being aligned with the contact member 43a of the first pressing means 43 (states (a) to (c) in FIG. 4) is in a direction close to the bending die 2 ((c) in FIG. ) In the direction of arrow X) and not in the direction away from the bending die 2. Although there is no limitation on the connection method of the

contact members

43a and 44a, in this embodiment, the connection end 432 of one contact member 43a is inserted between the connection ends 441 and 441 of the other contact member 44a. Then, the connecting

end portions

432 and 441 are vertically overlapped, and the pins 46 are inserted so as to penetrate the connecting

end portions

432 and 441 vertically, thereby connecting the two. In addition, although illustration is abbreviate | omitted, for example, fitting the cylindrical convex part provided in one end surface of

contact member

43a, 44a to the cylindrical (or semi-cylindrical) concave part provided in the other end surface. Thus, the two may be connected.

The actuator 44b is used when pressing the contact member 44a against the hollow member A as shown in FIG. The actuator 44b of the present embodiment is configured to include a hydraulic cylinder, and applies a pressing force to the contact member 44a via a piston that slides in the cylinder.

In addition, the 2nd press means 44 of this embodiment is used for the bending process performed in the last (this embodiment 2nd time) among the bending processes performed in multiple times by shifting a place in the process object area | region M. FIG. The contact member 44a is in contact with the end portion of the processing target region M. The contact member 44 a includes a mounting seat for the position adjusting means 42.

Next, a method for manufacturing the bumper reinforcement B will be described with reference to FIG.
In the manufacturing method of this embodiment, as shown in FIGS. 1A to 1C, the core 41 is inserted into the inner space of each of the left and right processing target regions M and M, and With the finishing surface 4A positioned in the first bending region M1, bending is performed simultaneously on the left and right first bending regions M1, M1, and the outer edge A2 of the first bending region M1 is the core 41. Then, as shown in FIG. 1 (d), the core 41 is moved to the end side of the processing target region M, and the finishing surface 4A of the core 41 is moved to the first finishing surface 4A. While being positioned in the second bending region M2, bending is simultaneously performed on the second bending regions M2 and M2 at the two left and right sides, and the outer edge A2 of the second bending region M2 is formed on the finishing surface 4A of the core 41. It is processed into a shape along.

This will be described in more detail with reference to FIG. The manufacturing method of this embodiment includes a first preparation process (see FIG. 4A), a first bending process (see FIG. 4B), a second preparation process (see FIG. 4C), A second bending process (see FIG. 4D) is included.

In the first preparation process, as shown in FIG. 4A, the bending die 2 is positioned inside the machining target area M, and the core 41 is inserted into the inner space of the machining target area M. 41 is a process of positioning 41 finish surface 4A in the first bending region M1 (see FIG. 2). In the present embodiment, the core 41 may be inserted from the end face side of the hollow shape member A, and the locking portion 41b may be brought into contact with the end face of the hollow shape member A. Before inserting the core 41, the pressing member 31 is advanced toward the non-processing target region S, and the non-processing target region S is clamped (restrained) by the bending die 2 and the holding means 3.

As shown in FIG. 4B, in the first bending process, the first bending region M1 (see FIG. 2) is pressed from the outside of the bending in a state where the non-processing target region S is constrained, and the first bending region M1. This is a process of processing the inner edge portion A1 into a shape along the finishing surface 2A of the bending die 2 and processing the outer edge portion A2 of the first bending region M1 into a shape along the finishing surface 4A of the core 41. When bending the first bending region M1, the piston of the actuator 43b is advanced to apply a pressing force to the contact member 43a, so that the entire finishing surface 4A of the core 41 is the first bending region. What is necessary is just to rotate the contact member 43a centering on the pin 45 until it contacts the outer edge A2 of M1. In this case, when the contact member 43a of the first pressing means 43 is rotated in the direction of the arrow X, the contact member 44a of the second pressing means 44 is also rotated together (the plurality of

contact members

43a and 44a are aligned. Therefore, if the bending angle is larger than a certain level, the rod 41 of the position adjusting means 42 is retracted (retracted) with the rotation of the contact member 44a. The amount is kept constant and the bending process is performed more stably. Even after the first bending process is completed, the first bending region M1 is held (restrained) by the bending die 2 and the pressing means 43.

In the second preparation process, as shown in FIG. 4 (c), the core 41 is moved to the end side (right side in FIG. 4) of the processing target region M, and the finishing surface 4A of the core 41 is second bent. This is a process of positioning in the region M2 (see FIG. 2). Since the

contact members

43a and 44a are aligned, the core 41 can be moved to the second bending region M2 simply by retracting the rod of the position adjusting means 42.

In the second bending process, as shown in FIG. 4 (d), the second bending region M2 (see FIG. 2) is bent in a state where the non-work target region S and the first bending region M1 (see FIG. 2) are constrained. While pressing from the outside, the outer edge A2 of the second bending region M2 is processed into a shape along the finishing surface 4A of the core 41, and the inner edge A1 of the second bending region M2 is used as the finishing surface 2A of the bending die 2. It is a process of processing to a shape along. When bending the second bending region M2, the piston of the actuator 44b is advanced to apply a pressing force to the abutting member 44a, so that the entire finishing surface 4A of the core 41 is the first bending region. The contact member 44a may be rotated around the pin 46 until it contacts the outer edge A2 of M1. When the contact member 44a of the second pressing means 44 is rotated in a state where the first bending area M1 is constrained, the contact member 44a is inclined with respect to the contact member 43a of the first pressing means 43, and the second bending area M2 is bent. Even when the second bending region M2 is bent, if the bending angle is larger than a certain degree, the rod of the position adjusting means 42 is retracted (retracted) with the rotation of the contact member 44a. Then, the insertion amount of the core 41 is maintained constant, and the bending process is performed more stably.

When the second bending process is completed, the rod of the position adjusting means 42 is retracted to completely pull out the core 41 from the processing target region M, and then the

actuators

32, 43b, and 44b are retracted, and the pressing member 31 and The

contact members

43a and 44a are returned to their original positions (positions in FIG. 2).

As described above, when the position of the core 41 inserted in the processing target region M of the hollow profile A is sequentially moved and bending is performed each time the core 41 is moved, the core 41 is inserted. Compared to the case where bending is performed only once, the applicable bending center angle can be increased, and the applicable bending radius can be reduced.

According to the bumper reinforcement (bending member) manufacturing method and manufacturing apparatus according to the present embodiment, the core 41 is used at the bending position (bending regions M1, M2). Can be suppressed.

According to the present embodiment, the bumper reinforcement B can be obtained by simply moving the positions of the left and

right cores

41 and 41 sequentially and bending the left and right each time the

cores

41 and 41 are moved. There is no need to use complicated means and devices.

In the above-described embodiment, the case where the bending process is performed on the two bending areas M1 and M2 provided in the processing target area M is illustrated, but the bending process is performed on three or more bending areas. There is no problem. In this case, the same number of pressing means as the number of bending regions may be arranged.

In the above-described embodiment, the case where the

actuators

43b and 44b of the pressing means 43 and 44 are arranged in parallel is illustrated, but the direction of the

actuators

43b and 44b is not limited.

Further, in the above-described embodiment, the case where the bending die 2, the holding means 3, and the bending device 4 are arranged on the upper surface of the base 1 and bending is performed in a substantially horizontal plane is exemplified. Therefore, bending may be performed in a substantially vertical plane. In this case, for example, the bending die may be disposed on the upper side of the hollow shape member, and the pressing means may be disposed on the lower side of the hollow shape member.

Claims

A method of manufacturing a bending member by providing a processing target region in a hollow shape material that is a base of the bending member, and sequentially performing bending using a core for a plurality of locations in the processing target region,
In a state where the core is inserted into the inner space of the processing target region, and the finish processing surface provided on the side surface of the core is positioned in the first bending region provided at the start end of the processing target region, Bending the first bending region, processing the outer edge of the first bending region into a shape along the finishing surface of the core,
Thereafter, the core is moved to the end side of the region to be processed, and the finishing surface of the core is positioned in the second bending region located next to the first bending region, and the second A bending member manufacturing method, wherein bending is performed on a bending region, and an outer edge portion of the second bending region is processed into a shape along the finishing surface of the core.
A method of manufacturing a bending member by providing a processing target region in a hollow shape material that is a base of the bending member, and sequentially performing bending using a core for a plurality of locations in the processing target region,
A bending die is positioned on the bending inner side of the processing target region, a core is inserted into the inner space of the processing target region, and a finish processing surface provided on a side surface of the core is used as a starting end portion of the processing target region. A first preparation step located in the first bending region provided;
In a state where the non-working target area not subjected to bending using the core is constrained, the first bending area is pressed, and the outer edge portion of the first bending area is shaped along the finishing surface of the core. A first bending process of processing the inner edge of the first bending region into a shape along a finishing surface provided in the bending mold;
A second preparatory step in which the core is moved to the end side of the processing target region, and the finishing surface of the core is positioned in a second bending region located next to the first bending region;
The second bending region is pressed in a state in which the non-processing target region is constrained, the outer edge portion of the second bending region is processed into a shape along the finishing surface of the core, and the second bending region And a second bending process of processing an inner edge portion into a shape along the finishing surface of the bending die.
Bumper reinforcement is manufactured by providing processing target areas at both ends of the hollow shape material that serves as the basis for bumper reinforcement, and performing bending using a core at multiple locations within each processing target area. A method,
A state in which a core is inserted into the inner space of each processing target region, and the finish processing surface provided on the side surface of each core is positioned in the first bending region provided at the start end of each processing target region In the left and right two first bending regions are simultaneously bent, and the outer edge of each first bending region is processed into a shape along the finishing surface of each core,
Thereafter, the respective cores are moved to the end side of each processing target region, and the finishing surface of each core is positioned in the second bending region located next to the first bending region, Bumper characterized in that bending is performed simultaneously on the left and right second bending regions, and the outer edge of each second bending region is processed into a shape along the finishing surface of each core. Reinforcement manufacturing method.
A core inserted into the inner space of the processing target area of the hollow shape,
Position adjusting means for inserting and removing the core;
A bending device comprising a plurality of pressing means provided continuously on the outside of the region to be processed,
The plurality of pressing means are arranged corresponding to a plurality of bending regions provided in the processing target region,
Each of the plurality of pressing means applies a pressing force to the corresponding bending region.
Each pressing means includes a contact member that contacts the bending region, and an actuator that applies a pressing force to the contact member,
The bending according to claim 4, wherein the adjacent contact members are connected to each other through pins, and each contact member is rotatable about the pins. Processing equipment.
The bending apparatus according to claim 4 or 5, wherein the position adjusting means is attached to the abutting member that abuts on a terminal portion of the processing target area.
A bumper reinforcement manufacturing apparatus in which two bending apparatuses according to any one of claims 4 to 6 are arranged,
The bumper reinforcement manufacturing apparatus, wherein the bending apparatuses are arranged so that bending can be simultaneously performed on both ends of a hollow shape material which is a base of the bumper reinforcement.