JP2000015340A - Bending method and apparatus thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the smooth progression of an operation and to improve the operating efficiency by deciding the bending order of a work and a die, displaying the information of change-movement for work posture so as to abut the work on the end part according to each process and bending based on this information. SOLUTION: A press brake vertically moves a lower table 1, to which the die 3 is fitted, with a cylinder 8. The information of a product is inputted in an input means 14. Each bending order of the work and the die 4 used at this time, are decided with a calculating and deciding means 9B based on the product information. Based on this decided bending order, the change-movement information for work posture is indicated so as to abut the work on the end part 3 according to each process by using an abut-driving control means 15 and an displaying means 16. Successively, based on the indicated change-movement for work posture, the bending is applied to the work W whose posture is changed with a control means 9A. In such a way, an operator can easily confirm the change-movement of the posture in the case of abutting the work on the end part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending method, particularly in a press brake, by displaying work posture changing operation (material handling) information in an easily understandable manner with a lamp or the like.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending method and a bending apparatus capable of easily confirming a change in posture when an operator abuts a work on a workpiece, facilitating a smooth operation, and improving processing efficiency.

[0002]

2. Description of the Related Art Conventionally, when bending a complicated shape using a press brake (FIG. 1), it is well known that the posture of the work W to be applied to the abutment 13 is well known. It becomes a problem.

For example, if the operator of the press brake is a beginner, even a complicated bending process such as a step bend can know to some extent which die to use in the next process if the back gauge device positions the work.

However, it is difficult for beginners to understand the posture of the work when the work is applied to the abutment 13 (FIG. 1).

[0005] For example, even if it is indicated only by terms specific to bending, such as "large register mark", "rotation", and "small register mark" (FIG. 6), a beginner can change the workpiece in any posture. Sometimes it's hard to tell if you should hit it.

[0006] The work posture changing operation is to handle the work, and is called material handling (material handling). In order to instruct the material handling to an operator, various methods have been conventionally attempted. .

For example, in the case of the latest NC, there is a method (on-line) of displaying on a screen the layout of a die used for step bending (FIG. 7), a method of hitting a work in three dimensions, and the like.

In offices and the like, CAM (Computer A)
There is a method (offline) in which bending data and work instructions (including drawings) are created using ided Manufacturing, and a worker performs bending while viewing these.

[0009]

However, in the above-mentioned on-line system, it is necessary to go to the screen of the NC 9 (FIG. 1) every time until the operator completely learns the work posture changing operation. take time.

In particular, in the case of a large-sized machine, it is extremely troublesome to go to the screen frequently, so that the time spent is long, and the work posture change operation is confirmed on the screen for each process. In this case, the processing efficiency is significantly reduced.

In the off-line method, as the number of processes increases, the number of work instructions increases and the size of the drawing decreases, so that the operator can completely change the work posture change operation for each process. Can not remember.

Therefore, the operator needs to confirm the work posture changing operation with the work instruction sheet each time.

As a result, it is apparent that the work cannot be carried out smoothly and the processing time is lengthened.

SUMMARY OF THE INVENTION An object of the present invention is to easily confirm a work attitude change operation in a press brake so that work can be smoothly progressed and machining efficiency can be improved.

[0015]

According to the present invention, as shown in FIGS. 1 to 8, (1) input product information including graphic information such as a three-dimensional three-dimensional view of a product. (2) calculating the processing information including the D value and the L value when bending each bending line of the work W based on the product information; and (3) calculating the processing information including the D information and the die information. (4) determining a bending order of the workpiece W and a mold to be used at that time based on the determined bending order;
Displaying, in accordance with each process, work posture changing operation information for bringing the work W into contact with the abutment 3; and (5) a work whose posture has been changed based on the displayed work posture changing operation information. A bending method (FIGS. 4 and 5), which comprises a step of bending the W, and input means 14 for inputting product information including graphic information such as a three-dimensional three-dimensional view of the product; Based on the product information from the input means 14, processing information including a D value and an L value is calculated, and based on the product information and the mold information, a work W
Calculation / determination means 9B for determining the bending order of the workpiece and the die; display means 16 for displaying the work posture change operation information in accordance with each step based on the bending order of the work W determined by the calculation / determination means 9B; And a bending means (FIG. 1) for bending the work W whose posture has been changed based on the work posture changing operation information displayed by the display means 16. Have taken.

Therefore, according to the configuration of the present invention, the work attitude changing operation (material handling) information is transmitted to the lamps 16A, 16B,
16C and 16D (FIG. 1), the screen 16E and FIG. 2 (FIG. 2), the speaker 16F (FIG. 3) and the like can be displayed in an easily understandable manner.

For this reason, the worker pushes the work W into the abutment 13.
Since the posture changing operation (FIG. 6) in the case of (FIG. 1) can be easily confirmed, the work can be smoothly progressed and the processing efficiency can be improved.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings according to embodiments. FIG. 1 shows the first embodiment of the present invention.
It is a figure which shows an embodiment, 9 is NC, 14 is an input means, 15 is an abutting drive control means, 16 is a display means, 1
7 is a storage means.

As the press brake to which the present invention is applied, for example, there is a lift press brake (lower view in FIG. 1). The lift press brake has a lower table 1 which is moved up and down by a cylinder 8. A die 3 is attached to the lower table 1.

The lift press brake shown in FIG.
Side plates 7 are provided on both sides thereof, and an upper table 6 is fixed to the side plates 7, and a punch 4 is attached to the upper table 6.

Further, at the rear of the press brake, a back gauge device is provided (lower view in FIG. 1), and work posture changing operation information displayed on display means 16 such as lamps 16A, 16B, 16C, 16D described later. Is checked, the work W whose posture has been changed by the worker is abutted against the abutment 13.

The back gauge device includes a supporter 10 fixed to the lower table 1 and a post 1 supported on the supporter 10 so as to be movable in the front-rear direction (Y-axis direction).
1 and attached to the post 11 via a stretch 12 so as to be movable in the vertical direction (Z-axis direction);
It is constituted by abutment 13 movable on the stretch 12 in the left-right direction (X-axis direction).

The back gauge device is controlled by the NC 9 (FIG. 1) via the abutting drive control means 15.

Therefore, after the abutment 13 is positioned by the abutment drive control means 15 (FIG. 1) (FIG. 7), if the worker abuts the work W whose posture has been changed to the abutment 13. The lifting press brake performs a bending process on the work W by cooperation of the punch 4 and the die 3.

The work posture change operation instructing device shown in the upper part of FIG. 1, that is, the material handling instruction device, is connected to the ascending press brake.
, NC 9, abutting drive control means 15, display means 16
And storage means 17.

The input means 14 is a keyboard or the like for inputting product information including graphic information such as a three-dimensional three-dimensional view of the product (FIG. 8A). (B)) and a development view (FIG. 8 (C)).

The NC 9 comprises a control means 9A and a calculation / decision means 9B, and the NC 9 is connected to an abutting drive control means 15, a display means 16 and a storage means 17.

The control means 9A controls the entire apparatus shown in FIG. 1 by giving instructions to a calculation / decision means 9B and the like which will be described later.

The calculating / determining means 9B is provided with the control means 9A.
Based on the product information input from the input means 14 via the input device 14, the machining information including the D value and the L value is calculated, and the bending order and the mold of the workpiece W are determined based on the product information and the mold information. decide.

That is, as described above, the ascending press brake is provided with the abutment 13 which constitutes the back gauge device (FIG. 1).
The workpiece W is abutted against and positioned, and the punch 4 and the die 3
Bending is performed in cooperation with.

Therefore, when bending each bending line of the work W, first, the L value (FIG. 1), which is the position of the abutment 13 with respect to the die 4, and the work W are bent by a predetermined angle θ. Value, which is the relative distance between the punch 4 and the die 4 (FIG. 1)
Is determined.

Further, based on the product information and the mold information stored in the storage means 17, the bending order of the work W and the mold used in that case are determined.

The abutment drive control means 15 controls the positioning of the abutment 13, and the workpiece W whose posture has been changed is abutted against the positioned abutment 13.

For example, in the case of the step bend shown in FIG. 6, the position of the abutment 13 also moves as the used die moves to 4A, 4B and 4C.

In this case, the NC 9 (FIG. 1) drives the position of the abutment 13 via the abutment drive control means 15 based on the bending order of the workpiece W and the die determined by the calculation / determination means 9B. Control.

The display means 16 displays the work posture change operation information for each process based on the bending order of the work W determined by the calculation / determination means 9B described above.

The display means 16 is attached to, for example, the upper table 6 of an ascending press brake (FIG. 1), and is turned on or off in response to a work posture changing operation such as a large register mark, rotation, small register mark, or progressive feeding. Lamp 16A, 16
B, 16C and 16D.

That is, the control means 9A constituting the NC 9
The work posture changing operation of the work W (FIG. 6) is known for each process from the product information and the bending order of the work W.

Therefore, the work posture changing operation is displayed by the lamps 16A, 16B, 16C and 16D for each process.

As a display method, as described above, the corresponding lamp 16A, 1
There is a method of turning on 6B, 16C and 16D (FIG. 1).

In a certain step, when there is a combination of the work posture changing operations, for example, one of the lamps 16A and the like may be flickered as described above.

Further, as shown in FIG. 2, the display means 16 is a screen 16 for displaying the work posture change operation in graphic form.
E can also be comprised.

In particular, when the worker is a beginner, the operator often does not know the meaning of the work posture changing operation such as large register mark, rotation, etc. (FIG. 6). In such a case, the screen 16E of FIG. is there.

Alternatively, as shown in FIG. 3, the display means 16 may be constituted by a speaker 16F for displaying the work posture change operation by voice.

In this case, by using together with the screen 16E, the operator can control the screen 1 according to his / her skill level.
Either 6E or the speaker 16F may be selected, or both may be shared (FIG. 3).

Here, the large register mark in the work posture changing operation is to turn the work W upside down as shown in FIG.

That is, in FIG. 6, the flange F is initially standing on the front side as shown in the left figure, but if this is turned over, the flange F comes to the rear side as shown in the right figure. Therefore, the flange F on the back side is applied to the abutment 13.

In addition, the rotation (in FIG. 6) means that the direction of contact with the abutment 13 is on the opposite side.

That is, in FIG. 6, the flange F initially faces the abutment 13 side as shown in the left figure, but if this is turned to the opposite side, the flange F becomes as shown in the right figure. Comes to the front, and the flat portion on the opposite side is applied to the abutment 13.

Next, the small register mark (FIG. 6) is an operation in which the large register mark () and the rotation () are combined.

In FIG. 6, initially, as shown in the left diagram,
Although the flange F is standing upward facing the butting 13 side,
When the movements of the large register mark () and the small register mark () are combined with this, the flange F comes to the front and faces downward as shown in the right figure. .

The progressive feeding (FIG. 6) is to perform the same bending process a plurality of times.

That is, in FIG. 6, a flat work W is initially placed on the die 3 as shown on the left end.
As it goes to the right end, a plurality of 90 ° normal bending processes are sequentially performed by the cooperation of the punch 4 and the die 3.

Hereinafter, (a) to (d) in FIG. 6 show a work posture changing operation at the time of box bending.

That is, 90 ° to the right of rotation () means changing the original posture (left figure) by rotating the work W clockwise by 90 ° (right figure).

The rotation left 90 ° () means rotating the work W 90 ° counterclockwise, and the rotation right 90 °
+ Small register mark is an operation combining (), right rotation 90 ° and () the small register mark (), 90 ° left rotation + small register mark is (), 90 ° left rotation and () the small register mark ()
And changes the initial posture shown in the left diagram to the posture shown in the right diagram.

Hereinafter, the operation of the present invention having the above configuration will be described.
A description will be given based on FIGS.

In the following description of the operation, the work posture changing operation is performed by sequentially feeding a large register mark, a rotation, and a small register mark (from FIG. 6) for convenience of explanation. Also, the display means 16
It is assumed that the lamps 16A, 16B, 16C, and 16D shown in FIG.

(1) Operation from input of product information to determination of bending order and mold. First, in step 101 of FIG. 4, product information is input, in step 102, processing information is calculated, and in step 103, a bending order and a mold are determined.

That is, when the product information (FIG. 8) is input by the input means 14 (FIG. 1), the information is input to the control means 9A as a signal S1 (FIG. 1), and the information is calculated via the control means 9A. The signal is input to the determining means 9B (signal S6).

The calculation / determination means 9B calculates the processing information including the D value (FIG. 1) and the L value when bending each bending line of the work W based on the input product information.

The calculation / decision means 9B reads the product information and the data read from the storage means 17 (signal S in FIG. 1).
3, S6) Based on the mold information, the bending order of the work W and the molds 4A, 4B, 4C to be used at that time (FIG. 7) are determined.

(2) First bending operation.

In this state, the work W is placed on the die 3 in step 104 of FIG. 4, and the processing is started in step 105. In step 106, the lamps 16A, 16B, 16C, 16D (FIG. 1) Remains unlit, the first bending process is completed in step 107.

That is, when the bending order and the die of the workpiece W are determined by the calculation / determination means 9B, the control means 9A performs the bending process via the abutting drive control means 15 (signals S6, S2, S5). The press brake, which is a means, is controlled to position the abutment 13 at a predetermined position.

Then, the worker places the work W on the die 3 and abuts the work W against the positioned abutment 13 to complete the first bending process.

Accordingly, in the first bending process, since the work posture changing operation (FIG. 6) is not performed, the lamp is not lit (step 106).

(3) Operation after the second bending process.

Next, in step 108 of FIG.
It is determined whether or not there is a large register mark. If there is a large register mark (YES), the lamp 16A (FIG. 1) of the large register mark is turned on in step 109, and in step 110, the posture of the workpiece W by the large register mark. Is changed, and in step 111, the second bending is completed.

That is, the NC 9 (FIG. 1) determines whether or not there is a large register mark (FIG. 6) in the second bending.

If there is a work posture change operation (FIG. 6) by the large register mark (YES), the control means 9
A (FIG. 1), the lamp 16A of the display means 16 provided on the upper table 6 is turned on (signal S).
4).

Then, by turning on the lamp 16A,
The operator confirms that the work posture changing operation is a large register mark, turns the work W over, changes the posture of the work W by the large register mark (FIG. 6), and in the changed state, the collision 1
When the work W is abutted against the work 3 and the lower table 1 is raised, the work W is bent by cooperation of the punch 4 and the die 3.

When the NC 9 determines that there is no large registration mark (NO in step 108), the operation is performed as follows.

That is, in step 108 of FIG.
If C9 determines that there is no large register mark (NO), the process proceeds to step 112, where it is determined whether or not there is rotation. If it is (YES), in step 113, 16B ( 1) is turned on, the posture of the work W (of FIG. 6) is changed by rotation in step 114, and the work 13 is hit against the abutment 13 in this changed state, and the lower table 1 is raised. , Second
Complete the bending process.

Similarly, in step 112,
If there is no rotation (NO), it is determined in step 115 whether or not there is a small register mark.
ES), in step 116, the 16C (FIG. 1) corresponding to the small register mark is turned on, and in step 117, the posture of the work W (FIG. 6) is changed by the small register mark. Butt, lower table 1
Is raised, in step 111, the second bending is completed.

Further, if there is no small register mark at step 115 (NO), at step 118, 16D (FIG. 1) corresponding to the forward feed is turned on, and at step 11
In step 9, the posture of the work W (in FIG. 6) is changed by progressive feeding, and the changed state is abutted against the abutment 13, and the lower table 1 is raised. In step 111, the second bending is completed. .

The third bending process (step 12 in FIG. 5)
The same operation is performed in the subsequent steps from 0 to 131).

As described above, the work posture changing operation is performed in the manner shown in FIG.
Can be easily confirmed by turning on any one of the lamps 16A, 16B, 16C, and 16D.

The position of the abutment 13 when the workpiece W whose posture has been changed based on this is abutted (FIG. 7) is N
Since C9 controls the movement through the abutting drive control means 15 (FIG. 1), it can be confirmed immediately.

Therefore, according to the present invention, the operation of changing the work posture can be easily confirmed, whereby the work can be smoothly progressed and the processing efficiency can be improved.

In the above embodiment, the case where the present invention is applied to a lift press brake has been described in detail. However, the present invention is not limited to this, and the lower table is fixed and the upper table moves up and down. It is needless to say that the present invention is also applied to a descending type press brake which has the same effect.

[0082]

As described above, after determining the bending order of the work and the die based on the product information and the die information, the work posture change operation information for abutting the work abruptly based on the bending order. Is displayed in accordance with each process, and the present invention is configured by a method of performing a bending process and an apparatus for performing the method. Therefore, the worker can easily confirm the posture changing operation when the workpiece is abutted against the workpiece, and the technical effect is achieved that the work can be smoothly progressed and the processing efficiency is improved. .

[0083]

[Brief description of the drawings]

FIG. 1 is an overall view showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a second embodiment of the present invention.

FIG. 3 is a diagram showing a third embodiment of the present invention.

FIG. 4 is a flowchart showing an operation from input of product information to first bending according to the present invention.

FIG. 5 is a flowchart showing an operation after the second bending according to the present invention.

FIG. 6 is a diagram illustrating a work posture changing operation according to the present invention.

FIG. 7 is a view showing a step bending process according to the present invention.

FIG. 8 is a diagram showing an example of product information according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower table 3 Die 4 Punch 6 Upper table 7 Side plate 8 Vertical cylinder 9 NC 9A Control means 9B Calculation / decision means 14 Input means 15 Thrust drive control means 16 Display means

Claims (6)

[Claims] (1) a step of inputting product information including graphic information such as a three-dimensional three-dimensional view of a product; and (2) a D for bending each bending line of a workpiece based on the product information.
(3) determining the bending order of the workpiece and the die to be used at that time based on the product information and the die information; and (4) determining the determined die. Displaying work posture change operation information for abutting the work in accordance with each process based on the bending order, and (5) changing the posture based on the displayed work posture change operation information. A step of performing bending on the worked workpiece. 2. An input means for inputting product information including graphic information such as a three-dimensional three-dimensional view of a product, and based on the product information from the input means, processing information including a D value and an L value is calculated, Calculation / determination means for determining the bending order of the work and the die based on the product information and the die information, and based on the bending order of the work determined by the calculation / determination means, calculates the work posture change operation information in each step. Display means for displaying according to
And a bending device for bending a workpiece whose posture has been changed based on the work posture changing operation information displayed by the display means. 3. The bending apparatus according to claim 2, wherein said bending means is an ascending press brake, and said display means is attached to an upper table of said press brake. 4. The display means lights up in response to a work posture changing operation such as a large register mark, rotation, small register mark, or progressive feeding.
3. The bending apparatus according to claim 2, comprising a blinking lamp. 5. The bending apparatus according to claim 2, wherein the display means comprises a screen for displaying the work posture change operation in a graphic form. 6. The speaker according to claim 2, wherein said display means comprises a speaker for displaying a work posture change operation by voice.
The bending apparatus described in the above.