JP4955489B2 - Bending machine - Google Patents

Description

The present invention relates to a bending apparatus that continues processing from the beginning to the end while being mounted on a machine body side table without returning the mold transferred from the mold storage unit to the machine body to the mold storage unit side.

Currently, in order to complete one product, multiple processing stations with multiple mold groups are formed on the upper and lower tables of the bending machine, and what is required from these formed processing stations for each bending order (process). Step bend processing of selecting and processing is performed.

  In this step bend processing, 1 JOB1 LAYOUT is the mainstream that continues the processing to the final process without changing the mold layout consisting of the mold group once attached to the upper and lower tables on the bending machine side. , Improving the processing efficiency.

  However, for example, when bending a product that requires cutting and raising or peripheral bending, the mold layout should be spaced with an interval between processing stations so that a mold not used in each process will not interfere with the workpiece. If formed, the total length of the mold layout exceeds the upper and lower table lengths, and there is a problem that the mold cannot be attached to the upper and lower tables.

  Therefore, the two mold layouts must be processed separately (for example, FIG. 6 and FIG. 7). Therefore, when processing is performed using the second mold layout (FIG. 7), the metal that is not used for processing is used. The mold is returned to the mold storage provided on the side of the bending machine (for example, a 45 mm mold in the mold layout of FIG. 6), and a new mold required for the second mold layout from the mold storage The mold must be exchanged by transferring the mold to the upper and lower tables (for example, 150 mm and 660 mm molds in the mold layout of FIG. 7).

As a result, not only does the work time increase, but there is a problem that a space for placing the intermediate product is required due to the generation of the intermediate product.

In order to solve this problem and improve the processing efficiency in the step bend processing, for example, a bending apparatus disclosed in Japanese Patent Application Laid-Open No. 2006-855 has been developed.

In this bending apparatus, after transferring a group of molds composed of a plurality of divided molds to the upper and lower tables together with the mold holder, a plurality of processing is performed by separating the transferred mold groups based on the mold layout information. A station is formed.
JP 2006-855 A

  However, in the bending apparatus disclosed in the above Japanese Patent Application Laid-Open No. 2006-855, when bending a product having a specific shape / dimension, all the bending lines in the product are replaced without changing the mold. When trying to bend all at once, the total length of the required mold layout may be larger than the table length on the machine body side of the bending machine.

As a result, processing cannot be performed at one processing station, and it must be performed at two processing stations. For this reason, a mold exchanging operation is required, and the entire processing time becomes extremely long.

An object of the present invention is to reduce the working time and generate an intermediate product by forming a predetermined mold layout without performing mold replacement work between the mold storage unit and the upper and lower tables. Therefore, the space for placing it is unnecessary, and the overall processing efficiency is improved.

In order to solve the above problems, the present invention as described in claim 1,
An input unit 20B for inputting product information and machine information;
A process / mold determining unit 20D for determining a process and a mold;
A first mold layout determining unit 20E that determines a mold layout for processing a predetermined product;
A mold layout total length / machine body table length comparison unit 20F that compares the total length of the mold layout determined by the first mold layout determination unit 20E and the table length Table_L of the machine body;
When the total length of the mold layout is larger than the table length Table_L of the machine body by comparing the mold layout overall length / machine body table length comparison unit 20F, for each process determined by the process / mold determination unit 20D Are set as machining areas K1, K2... And non-machining areas N1, N2... (FIG. 3A), and a die for machining a bending line in the machining areas K1, K2. In a state where the molds not to be processed are arranged on the machine body side table 12, (13), the non-processed areas N1, N2,... , S2..., By moving the mold so as to be shortened by the amount, the mold layout for one process or two or more processes is determined so that the total length is equal to the table length Table_L of the machine body ( 3 (B)) and the second tool layout determining section 20G,
In order to realize the mold layout determined by the second mold layout determining unit 20G, the mold replacement units 2A and 3A are driven and controlled, and the molds P and D are moved to predetermined positions on the machine body side table. Mold control unit 20H,
It has a machining control unit 20L that drives and controls the ram 12 and bends the workpiece W using the molds P and D moved to a predetermined position on the machine body side table by the mold control unit 20H. The technical means of the bending apparatus 1 is taken.

  According to the configuration of the present invention, the metal mold for processing the bending line and the metal mold not to be processed are arranged on the machine body side table 12, (13) in the processing regions K1, K2,. In a state (for example, the state of FIG. 3B), the non-processed regions N1, N2,... Are shortened by the regions S1, S2,. (For example, ΔN1 = N1-S1 in FIG. 3B) By moving the die, the die layout for each step or two or more steps is made equal to the table length Table_L of the machine body. Since it can be determined (the upper diagram, the middle diagram, and the lower diagram in FIG. 3B), in order to realize the mold layout determined in this way (FIG. 3B), for example, the mold replacement unit 2A, Using 3A (Fig. 1), mold on the machine body side table Since the workpiece W can be bent using the mold that is moved to a predetermined position and then driven and controlled to the ram 12 and moved to the predetermined position on the machine body side table, the mold is exchanged. It is possible to bend from the beginning to the end of the product without any problems, significantly reducing the work time, and eliminating the need for a space to place it without generating intermediate products. In either case, the overall processing efficiency can be improved.

  As described above, according to the present invention, the work time can be shortened by forming a predetermined mold layout without performing the mold replacement work between the mold storage unit and the upper and lower tables, and the intermediate product. This eliminates the need for a space for placing it and thus improves the overall processing efficiency.

Hereinafter, the present invention will be described with reference to the accompanying drawings by embodiments.
FIG. 1 is an overall view of the present invention.

  A bending apparatus 1 shown in FIG. 1 is, for example, a press brake, and the press brake 1 has side plates 16 and 17 on both sides of a machine body.

An upper table 12 is attached to the upper portions of the side plates 16 and 17 via, for example, hydraulic cylinders 14 and 15 which are ram driving sources. A punch which is an upper die is attached to the upper table 12 via a punch holder 30. P is attached.

  A lower table 13 is disposed below the side plates 16 and 17, and a die D as a lower mold is mounted on the lower table 13 via a die holder 31.

  With this configuration, for example, an operator abuts against the back gauge abutments 10 and 11 disposed behind the lower table 13 while holding the workpiece W, and bending lines m1 to m7 on the workpiece W (for example, FIG. 4). After positioning the position to the machining position, if the operator depresses the foot pedal 7 (FIG. 1) to operate the hydraulic cylinders 14 and 15 and lower the upper table 12 as a ram, the pair of punches P The workpiece W is bent by a die composed of a die D (step 108 in FIG. 20).

A handling robot 8 is installed on the base 9 in front of the lower table 13 (FIG. 1). When the X-axis motor Mx (not shown), the Y-axis motor My, and the Z-axis motor Mz are driven, the handling robot 8 Move in the X-axis direction, the Y-axis direction, and the Z-axis direction.

With this configuration, if the workpiece W is gripped by the gripper at the tip of the arm of the handling robot 8, the workpiece W is abutted against the back gauge abutments 10, 11, and then the upper table 12 is lowered, Similarly, bending can be performed (step 108 in FIG. 20).

  Mold storage units 2 and 3 are installed on the side of the bending apparatus 1 (FIG. 1). The mold storage units 2 and 3 store the molds P and D, respectively. The machine body can be exchanged by the exchange units 2A and 3A (for example, disclosed in WO00 / 41824).

  As is well known, the mold exchange units 2A and 3A have a built-in moving mechanism including a motor, a pinion rack, and a mold exchange between the mold storage units 2 and 3 and the machine body. As will be described later (for example, FIG. 3B), it is also used to form a new mold layout on the assumption that all the molds used are mounted on the upper and lower tables 12 and 13.

The press brake NC device 20 having the above configuration (FIG. 1) includes a CPU 20A, an input unit 20B, a storage unit 20C, a process / die determination unit 20D, a first mold layout determination unit 20E, and a mold. The layout total length / machine body table length comparison unit 20F, a second mold layout determination unit 20G, a mold control unit 20H, a robot control unit 20J, a back gauge control unit 20K, and a machining control unit 20L. Yes.

  The CPU 20A follows a process procedure (for example, equivalent to FIG. 20) for carrying out the present invention, a process / die determining unit 20D, a first mold layout determining unit 20E, a mold layout total length / machine body table length comparing unit 20F, etc. The overall apparatus shown in FIG.

The input unit 20B is configured by an operation panel attached to the press brake. As is well known, the input unit 20B has an input member such as a keyboard and an output member such as a screen. Using the operation panel 20B, for example, Product information, machine information, and the like can be input automatically or manually (step 101 in FIG. 20), and the input result can be confirmed on the screen.

  In this case, the product information is, for example, CAD (Computer Aided Design) information, and generally includes information such as the plate thickness, material, bend line length, bend angle, and flange dimension of the workpiece W (FIG. 1). These are configured as a three-dimensional view and a development view, and in the present invention, bending information such as the bending lines m1 to m7 (FIG. 4) is included.

  Further, as the machine information, for example, the length of the upper and lower tables 12 and 13 on the machine body side which is the bending apparatus 1 (FIG. 1), that is, the table length Table_L (for example, 3000 mm) of the machine body shown in FIG. There is.

The storage unit 20C (FIG. 1) stores, in addition to the program for carrying out the present invention, the molds P and D used for each process determined by the process / mold determination unit 20D, and the CPU 20A Can be referenced when needed.

The process / die determination unit 20D (FIG. 1), based on product information, the process (bending order) of the product to be processed (for example, FIG. 4) and the mold (including shape and number) used for each process. To decide.

The first mold layout determining unit 20E (FIG. 1) determines a mold layout for processing a predetermined product (for example, FIG. 2C), and more specifically, all necessary for finishing the product. The mold layout in which all the molds necessary for the machining are arranged on the machine body side table 12 (13) is determined so that the workpiece and the mold can be machined without interference over the process.

Alternatively, the first mold layout determining unit 20E performs a mold exchanging operation between the mold storage units 2 (FIG. 1) and 3 and the machine body side table, and performs processing with a plurality of mold layouts from the beginning. (Fig. 2 (A)), when there are molds to be used jointly among the multiple mold layouts (dies of 270mm, 300mm and 280mm in Fig. 2 (B)) A single mold layout sharing the molds to be used jointly is determined (FIG. 2 (C)).

This mold layout generally includes not only information on which shape mold is mounted on which position on the table on the machine body side, but also an interval (gap to avoid interference between the workpiece part and the mold that are not to be processed). ).

2 and 3 are schematic diagrams, and for the sake of simplicity, the upper and lower tables 12 and 13 are collectively displayed as a machine body side table, and the punch P and die D are collectively displayed as a mold. It is.

The same applies to the cases of FIGS. 11 and 12.

The mold layout total length / machine body table length comparison unit 20F (FIG. 1) is the same as the total length (4875 mm) of the mold layout (for example, FIG. 2C) determined by the first mold layout determination unit 20E and the machine. The table length Table_L (3000 mm) of the main body is compared.

As a result, if the total length of the mold layout is larger than the table length Table_L of the machine body (YES in step 104 in FIG. 20), a new mold layout is determined by the second mold layout determining unit 20G (FIG. 20). Step 106), in order to realize this, the mold control unit 20H (FIG. 1) moves the mold on the machine body side table to a predetermined position via the mold replacement unit (Step 107 in FIG. 20). .

As described above, the second mold layout determining unit 20G (FIG. 1), when the total length of the mold layout determined by the first mold layout determining unit 20E is larger than the table length Table_L of the machine body Next, a new mold layout is determined (step 106 in FIG. 20).

That is, when the second mold layout determining unit 20G (FIG. 1) compares the mold layout total length / machine main body table length comparing unit 20F, the total mold layout total length is larger than the machine main body table length Table_L. Are set to machining regions K1, K2,... And non-machining regions N1, N2,... For each process determined by the process / die determination unit 20D (FIG. 3A). In the region K1, K2..., The mold for processing the bend line and the mold not to be processed are arranged on the machine body side table 12, (13), and the process is not performed for each step or two or more steps. By moving the mold so that the processing regions N1, N2,... Are shortened by the regions S1, S2,. The overall length of the machine body Determined to be equal to Bull length Table_L (Fig 3 (B)).

In this case, the processing regions K1, K2,... (FIG. 3A) are used to process the workpiece W on the machine body side table 12 (13) in order to process predetermined bending lines m1 to m7 (for example, FIG. 4). The workpiece W is a region in the left-right direction when it is positioned, and the non-working regions N1, N2,... Are regions other than the machining regions K1, K2,.

For example, as shown in FIG. 3A, all the molds P and D necessary for finishing the product are arranged on the machine body side table 12 (13), and a mold layout without interference during processing is configured. In the first step, the processing region is K1, the non-processing region is N1, N2, and in the second step, the processing region is K2, the non-processing region is N3, N4, and the like. In this case, the total length of the mold layout is 4875 mm, which is longer than the table length Table_L (for example, 3000 mm) of the machine body.

And as shown in FIG.3 (B), the machine main body side table 12, (13) the metal mold | die which processes a bending line in the process area | region K1, K2 ... for every process, and the metal mold | die which does not use for a process. In a state of being arranged above, the mold is moved so that the non-processed areas N1, N2,... Are shortened by the areas S1, S2,.

Here, the state in which the mold for processing the bend line and the mold not used for processing in the processing regions K1, K2... For each process are arranged on the machine body side table 12, (13) is, for example, It means the following cases.

That is, in the processing area K1 in the first step (upper drawing in FIG. 3B), the mold for processing the bending line is a 45 mm mold, and the mold not used for processing is 270 mm to In the machining area K2 in the second process (middle view of FIG. 3B), the mold for processing the bending line is a 45 mm mold and is not used for processing. Similarly, the mold is a mold of 270 mm to 660 mm,..., In the processing area K6 in the sixth process (the lower diagram in FIG. 3B), the mold for processing the bending line is 270 mm. The molds of ˜150 mm (left side) and not used for processing are 45 mm, 150 mm (right side) and 660 mm molds.

Further, for example, when the mold is moved so that the non-processed areas N1, N2,... Are shortened by the areas S1, S2,. This is the case.

That is, in the first step (upper diagram in FIG. 3B), the non-processed region N1 is shortened by the region S1 where there is no mold, that is, the N1 becomes ΔN1 = N1−S1. , 45 mm, 270 mm to 660 mm molds are moved, and in the second process to the fourth process (middle view of FIG. 3B), the non-processed areas N4, N5, and N7 are areas where no mold exists. Shorten by S2, ie, N4 becomes ΔN4 = N4-S2, N5 becomes ΔN5 = N5-S2, and N7 becomes ΔN7 = N7−S2. , 45 mm, 270 mm to 660 mm molds are moved, and in the 5th process to the 6th process (the lower figure in FIG. 3B), the non-processed areas N9 and N11 are only the area S3 where no mold exists. N11 is set to ΔN11 = N11 so as to shorten, that is, N9 becomes ΔN9 = N9−S3. So that S3, 45 mm and move the 270 millimeter ～660 mm die.

As a result, the second mold layout determining unit 20G (FIG. 1), as shown in the upper, middle and lower diagrams of FIG. The layout is determined so that the total length is equal to the table length Table_L of the machine body.

The robot control unit 20J (FIG. 1) drives and controls the handling robot 8 described above.

The back gauge control unit 20K positions the back gauge abutments 10 and 11 at predetermined positions. For example, the handling robot 8 abuts the workpiece W against the abutments 10 and 11 via the robot control unit 20J. Then, the workpiece W is bent (step 108 in FIG. 20).

The machining control unit 20L drives and controls the ram 12, and the mold control unit 20H described above.
The workpiece W is bent using the molds P and D moved to a predetermined position on the machine body side table.

2 to 10 show a first embodiment according to the present invention, and FIGS. 11 to 19 show a second embodiment according to the present invention.

FIGS. 2 and 3 correspond to FIGS. 11 and 12, respectively. FIGS. 2 and 3 are principle diagrams of the first embodiment, and FIGS. 11 and 12 are principle diagrams of the second embodiment.

FIGS. 4 to 10 and FIGS. 13 to 19 correspond to each other, FIGS. 4 to 10 are specific examples of the first embodiment, and FIGS. 13 to 19 are specific examples of the second embodiment.

  The first embodiment is a case where there is a mold to be used jointly among a plurality of mold layouts determined by the first mold layout determining unit 20E (FIG. 1) (FIG. 2B). The second embodiment is a case where there is no mold to be used jointly in the same case (FIG. 11B).

4 to 10 are specific examples of the first embodiment as described above, and the illustrated product S is processed by bending the bending lines m1 to m7 of the workpiece W shown in FIG. FIG. 5 shows an example of the positions of the bend lines m1 to m7 and the shape of the product S in each step.

Among them, FIGS. 6 and 7 are conventional mold layouts when bending the workpiece W of FIGS. 4 and 5, and when performing machining with the second mold layout (FIG. 7), The mold not to be processed is returned to the mold storage part provided on the side of the bending machine (for example, a 45 mm mold in the mold layout of FIG. 6), and a second mold layout from the mold storage part is newly provided. Therefore, it is necessary to perform a mold exchanging operation of transferring necessary molds to the upper and lower tables (for example, 150 mm and 660 mm molds in the mold layout of FIG. 7).

Therefore, when processing the same product (FIGS. 4 and 5) as described above, according to the present invention, a new mold layout is determined as shown in FIGS. By forming a predetermined mold layout without changing the mold between the upper and lower tables, the work time is reduced, and no intermediate product is generated, so that a space for placing it is unnecessary. As a result, the effect of improving the overall processing efficiency was achieved.

8 to 10 correspond to the upper, middle, and lower views of FIG. 3B described above, and a description thereof will be omitted.

On the other hand, as described above, FIGS. 11 to 19 show a second embodiment according to the present invention, FIGS. 11 and 12 are principle diagrams, and FIGS. 13 to 19 are specific examples.

Among these, FIGS. 11 and 12 correspond to FIGS. 2 and 3 of the first embodiment described above, and the description thereof is omitted.

FIGS. 15 and 16 are conventional mold layouts for bending the workpiece W of FIGS. 13 and 14, and when processing is performed with the second mold layout (FIG. 16), the processing is performed. The mold not to be used is returned to the mold storage unit provided on the side of the bending machine (for example, the 120 mm and 155 mm molds in the mold layout of FIG. 15), and the second mold from the mold storage unit is newly added. It is necessary to perform a mold exchanging operation in which a mold necessary for the mold layout is transferred and attached to the upper and lower tables (for example, 865 mm and 130 mm molds in the mold layout of FIG. 16).

Therefore, when processing the same product (FIGS. 13 and 14) as described above, according to the present invention, a new mold layout is determined as shown in FIGS. Without changing the mold between the storage unit and the upper and lower tables, by forming a predetermined mold layout, the work time is shortened, and there is no need for space to place it without generating intermediate products. Thus, the operation and effect of improving the overall processing efficiency was achieved.

17 to 19 correspond to the upper diagram, the middle diagram, and the lower diagram in FIG. 12B, in other words, the upper diagram, the middle diagram, and the lower diagram in FIG. .

The operation of the present invention having the above configuration will be described with reference to FIG.
(1) Operation until the mold layout is determined by the first mold layout determining unit 20E.

  In step 101 of FIG. 20, product information and machine information are input. In step 102, a process and a mold are determined. In step 103, a mold layout is determined.

  That is, when the CPU 20A detects that product information and machine information are input via the input unit 20B (FIG. 1), the process is performed via the process / die determination unit 20D and the first mold layout determination unit 20E. Determine the mold and mold layout.

(2) Operation until the mold layout is determined by the second mold layout determining unit 20G.

  In step 104 of FIG. 20, it is determined whether or not the total length of the mold layout is larger than the table length of the machine body. If it is large (YES), the process proceeds to step 105, and if not large (NO), step Proceeding to 112, a conventional bending process is performed.

That is, the CPU 20A (FIG. 1) controls the first mold layout determining unit 20E. If the determined mold layout is, for example, FIG. 2C, the mold layout total length / machine body table length comparison is performed. The part 20F (FIG. 1) clearly determines that the total length of the mold layout (4875 mm) is larger than the machine body side table length (3000 mm). Next, the second mold layout determining unit 20G Is controlled to determine a new mold layout (step 105 → step 106 in FIG. 20).

First, in step 105 of FIG. 20, machining areas K1, K2,... And non-machining areas N1, N2,.

That is, the second mold layout determining unit 20G (FIG. 1) sets processing regions K1, K2,... And non-processing regions N1, N2,. A))

Here, as described above, the processing regions K1, K2,... (For example, FIG. 3A) are used to process the workpiece W to machine the predetermined bending lines m1 to m7 (for example, FIG. 4). The work W is an area in the left-right direction when positioned on the side table 12 (13), and the non-machining areas N1, N2,... Are areas other than the machining areas K1, K2,.

Next, in step 106 of FIG. 20, a new mold layout is determined.

That is, as described above, the second mold layout determining unit 20G uses the machine body side table to form a mold for processing a bend line and a mold not to be processed in the processing regions K1, K2,. 12, in a state where it is mounted on (13), the non-processed regions N1, N2,... Are shortened by the regions S1, S2,. By moving the mold, the mold layout for one process or two or more processes is determined so that the total length is equal to the table length Table_L of the machine body (FIG. 3B).

(3) Bending operation.
Thereafter, in step 107, in order to realize the determined new mold layout, the molds P and D are moved on the machine body side table and the upper table 12 which is the ram 12 is lowered. The workpiece W is bent.

  The object of the present invention is to reduce the working time by forming a predetermined mold layout without performing a mold exchanging operation between the mold storage unit and the upper and lower tables. Is used in a bending machine that eliminates the need for a space for placing it and thus improves the overall machining efficiency. Specifically, not only a descending press brake (FIG. 1) but also a ram This is also applicable to a lift press brake in which the lower table 13 is raised, and is extremely useful.

1 is an overall view of the present invention. It is a principle figure (the first half) of 1st Example by this invention. It is a principle figure (latter half) of 1st Example by this invention. It is a figure which shows the example of a product processed by 1st Example of this invention. It is each process status explanatory drawing of the product of FIG. It is a figure which shows the conventional metal mold | die layout (the 1) in the case of processing the product of FIG. It is a figure which shows the conventional metal mold | die layout (the 2) in the case of processing the product of FIG. When processing the product of FIG. 4, it is a figure which shows the metal mold | die layout (the 1) determined by the 2nd metal mold | die layout determination part 20G of this invention. When processing the product of FIG. 4, it is a figure which shows the metal mold | die layout (the 2) determined by the 2nd metal mold | die layout determination part 20G of this invention. When processing the product of FIG. 4, it is a figure which shows the metal mold | die layout (the 3) determined by the 2nd metal mold | die layout determination part 20G of this invention. It is a principle figure (1st half) of 2nd Example by this invention. It is a principle figure (second half) of the 2nd example by the present invention. It is a figure which shows the example of a product processed by 2nd Example of this invention. It is each process status explanatory drawing of the product of FIG. It is a figure which shows the conventional metal mold | die layout (the 1) in the case of processing the product of FIG. It is a figure which shows the conventional metal mold layout (the 2) in the case of processing the product of FIG. It is a figure which shows the metal mold | die layout (the 1) determined by the 2nd metal mold | die layout determination part 20G of this invention when processing the product of FIG. It is a figure which shows the metal mold | die layout (the 2) determined by the 2nd metal mold | die layout determination part 20G of this invention when processing the product of FIG. It is a figure which shows the metal mold | die layout (the 3) determined by the 2nd metal mold | die layout determination part 20G of this invention when processing the product of FIG. It is a flowchart for demonstrating operation | movement of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bending apparatus 2, 3 Mold storage part 2A, 3A Mold exchange unit 7 Foot pedal 8 Handling robot 9 Base 10, 11 Abutting 12 Upper table 13 Lower table 14, 15 Hydraulic cylinder 16, 17 Side plate 20 NC apparatus 20A CPU
20B Input unit 20C Storage unit 20D Mold determination unit 20E First mold layout determination unit 20F Mold layout total length / machine body table length comparison unit 20G Second mold layout determination unit 20H Mold control unit 20J Robot control unit 20K Back Gauge control unit 20L Processing control unit 30 Punch holder 31 Die holder D Die P Punch W Workpiece

Claims (3)

An input section for entering product information and machine information;
A process and mold determining unit for determining a process and a mold;
A first mold layout determining unit for determining a mold layout for processing a predetermined product;
A mold layout total length / machine body table length comparison unit for comparing the overall length of the mold layout determined by the first mold layout determination unit and the table length of the machine body;
When the overall length of the mold layout is larger than the table length of the machine body by comparing the overall length of the mold layout and the machine body table length comparison unit, the machining area is determined for each process determined by the process / mold determination unit. In a state where a mold for processing a bending line in a processing area for each process and a mold not to be processed are arranged on the machine body side table, for each process or two or more processes By moving the mold so that the non-working area is shortened by the area where the mold does not exist, the total length of the mold layout for each process or two or more processes is equal to the table of the machine body. A second mold layout determining unit to determine;
A mold control unit that drives and controls the mold exchange unit to move the mold to a predetermined position on the machine body side table in order to realize the mold layout determined by the second mold layout determination unit;
A bending apparatus, comprising: a machining control unit configured to bend a workpiece using a die that is driven and controlled by the die control unit and moved to a predetermined position on the machine body side table by the die control unit. The first mold layout determining unit places all the molds necessary for processing on the machine body side table so that the workpiece and the mold can be processed without interference over all the processes necessary for finishing the product. The bending apparatus according to claim 1, wherein the layout of the mold disposed on the substrate is determined. The first mold layout determining unit performs the mold exchanging work between the mold storage unit and the machine body side table, and performs processing with a plurality of mold layouts from the beginning. The bending apparatus according to claim 1, wherein when there is a mold that is used jointly between layouts, a single mold layout that shares the shared mold is determined.

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