JP2002239647A - Plate machining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plate machining method in which two machines can be efficiently used to improve machining efficiency. SOLUTION: In this method, a plate machine for working in a preceding stage and a plate machine for receiving the plate so worked and working in the succeeding stage are used. In the machining process the outer periphery of a planar product M is cut from a base plate material W. In this outer peripheral cutting, a process of leaving a part of a side b is done by the machine in the preceding stage, while a process of working the left part b is done by the machine in the succeeding stage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of processing a plate material in which the same plate material is shared by two plate material processing machines in the processing of a plate material processing machine such as a punch press or a laser processing machine.

[0002]

2. Description of the Related Art Conventionally, there is a case where two plate material processing machines are provided side by side, and processing of the same plate material is performed by two units. For example, by punch press, from the material plate material to the desired dimensions,
When cutting a shaped product plate, it is necessary to leave an unprocessed portion called a microjoint at a part of the outer periphery of the product plate for convenience of feeding the plate in the machine. Some of these microjoints are cut with the sub head installed in the punch press.However, in order to increase the efficiency of processing, another punch press with a single tool is juxtaposed and dedicated to cutting the microjoint May be used.

[0003]

However, in general, since the cutting of the microjoint can be performed in a short time, the waiting time of the plate material processing machine for cutting the joint is long, so that it is sufficient to use two plate material processing machines. Improvement of machining efficiency has not been achieved.

[0004] It is an object of the present invention to provide a method of processing a plate material in which two plate processing machines can be used efficiently and the processing efficiency can be improved. Another object of the present invention is to make it possible to eliminate insufficient rigidity of a plate material during cutting and to perform accurate processing.

[0005]

According to a first aspect of the present invention, there is provided a sheet material processing method comprising: a sheet material processing machine for performing a process in a preceding process; and a plate material processed by the plate material processing machine.
A plate material processing method for processing a plate material by a plate material processing machine in a subsequent process of performing a subsequent process on the received plate material, wherein, among the processes of cutting the outer periphery of the product plate material cut from the plate material, This is a method in which processing to leave some sides is performed by the plate material processing machine in the preceding process, and processing of the remaining sides is processed by the plate material processing machine in the subsequent process. According to the method of the present invention, the plate material processing machine in the previous process performs a process of leaving a part of the side of the product plate material, and the post-process plate material processing machine performs the process of the remaining side. The amount of processing to be performed can be averaged. Therefore, two plate processing machines can be used efficiently, and processing efficiency is improved. Also, since the separation between the pre-process and the post-process is performed in units of one side, there may be a step due to an error between processing machines in the middle of the side, such as when dividing in the middle of the side or leaving a micro joint. There is no.

In the method of the present invention, when the product plate is rectangular, the short side of the product plate is processed by a plate processing machine in a preceding process, and a plate material in a subsequent process is cut out of a process of cutting an outer periphery of the product plate. The long side of the product plate may be processed by a processing machine. In the process of cutting a product plate from a material plate, the rigidity of the plate decreases as the processing proceeds. In particular, when the long side is processed first, the product plate is connected to the material plate only by the short side, and the rigidity is significantly reduced. The decrease in rigidity causes bending or the like at the time of feeding the plate material, leading to a decrease in processing accuracy. On the other hand, if the short side is processed first, and is passed to the plate processing machine in the subsequent process in this state, the plate can be delivered with a relatively small decrease in rigidity, and the processing accuracy is reduced. can avoid. Therefore, 2
High-precision processing can be performed while performing efficient processing using a plate processing machine.

A sheet material processing method according to a second aspect of the present invention receives a sheet material processed by a sheet material processing machine for performing a pre-process, a sheet material processed by the sheet material processing machine, and performs subsequent processing on the received sheet material. A sheet material processing method for processing a sheet material by a sheet material processing machine in a post-process, wherein the inner side processing is performed in a cutting process of an outer periphery of a product sheet material cut out from the plate material and an inner side process of the product sheet material. And the outer periphery is processed by a post-processing plate material processing machine. In this way, even if it is divided into processing of the inner side of the product plate material and processing of the outer periphery, depending on the number and amount of processing points on the inner side,
The processing amounts of the two plate material processing machines can be averaged, and efficient processing can be performed. In this case, since the inner side is processed by the plate material processing machine in the preceding process, the rigidity of the plate material is less reduced at the time of delivery to the plate material processing machine in the subsequent process, and the reduction in processing accuracy due to the reduced rigidity can be prevented. Accurate machining can be performed.

[0008]

An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the plate processing system receives a plate processing machine 1 that performs processing in a previous process, a plate W processed by the plate processing machine 1, and performs a subsequent processing on the received plate W. And a plate material processing machine 2 in a post-process to be performed. Each of the plate processing machines 1 and 2 is a machine capable of punching and cutting, and includes a punch press or a laser processing machine. In this embodiment, the plate material processing machine 1 in the preceding process is a turret type punch press, and the plate material processing machine 2 in the subsequent process is a punch press having a single punch tool. With respect to the arrangement of the plate material processing machines 1 and 2, a carry-in device 3 for carrying the material plate material W into the plate material processing machine 1 in the preceding process.
And an unloading device 4 for unloading the product sheet material M from the sheet material processing machine 2 in a later process.

In this specification and drawings, the two sheet material processing machines 1,
2 will be described by assigning the same reference numerals to corresponding parts, except for parts that need to be particularly distinguished. Double plate processing machine 1, 2
Is a processing unit 6 for processing a plate material W on the table 5 at predetermined processing positions P1 and P2,
A plate feeding mechanism 7 for moving the upper plate W in two orthogonal (X-axis, Y-axis) directions is provided. The X axis is one reference axis in plate processing, and the Y axis is another reference axis. On the upper surface of the table 5, a brush or a free bearing (not shown) for smoothly feeding the plate material W is provided. The processing unit 6 includes a punch driving mechanism that drives the punch tool up and down by a ram. The plate feeding mechanism 7 is provided with a cross slide 10 movably in the left-right direction (X-axis direction) on a carriage 9 movably mounted in a front-rear direction (Y-axis direction) on a base 8. A plurality of work holders 11 for holding the
It is attached to. The carriage 9 and the cross slide 10 are driven forward and backward by servo motors 12 and 1, respectively.
3 through ball screws 14 and 15.

Each of the plate material processing machines 1 and 2 has a plate material feed mechanism 7 arranged side by side, and has an individual stroke designed so that the cross slide 10 and the work holder 11 of each plate material feed mechanism 7 can approach each other. Thus, the transfer of the plate material W between the plate material feeding mechanisms 7 can be directly performed. The plate material processing machine 1 in the preceding step has a plate material holding mechanism 25 (FIG. 2) for repositioning. Plate holding mechanism 2
Reference numeral 5 denotes means for pressing the plate material W onto the table 5 so as to prevent the plate material W from unexpectedly moving when performing a repositioning operation, that is, when changing the gripping position of the plate material W by the work holder 11.

In FIG. 1, the unloading device 4 has an installation rail 17 mounted on a base 16 so as to be movable back and forth (Y axis), and a traveling body 18 is installed along the installation rail 17 so as to be movable left and right (X axis). It was done. The traveling body 18 is provided with a plurality of suction pads 19 for gripping the product plate material M.

As shown in FIGS. 4 and 5, each of the work holders 11 has an upper arm 20 attached to a fixed lower arm 21 so as to be openable and closable about a support shaft 22.
The plate material W is sandwiched between 0 and 21. Upper arm 20
Is driven to open and close by an open / close drive source 23 such as an air cylinder. The lower arm 21 has a positioning surface 24 with which the end of the plate material W contacts. The work holder 1
Numeral 1 is attached to the cross slide 10 via a vertical position changing mechanism (not shown) so that the vertical position can be changed to two levels.

As schematically shown in FIG. 3, the plate processing machine 2 in the post-process includes a plurality of positioning means 26 and 27 provided at predetermined positions on the table 5 apart from each other in the left-right direction. Is provided below the table. As shown conceptually in FIG. 13, each positioning means 26 and 27 is provided with a reference hole 3 provided as a preformed hole in the plate material W.
This is a means for positioning the plate material W on the table 5 by fitting to the table 1 or 32. The measurement device 28 is a unit that measures the position of the measurement hole 33 provided as a formed hole in the plate material W after processing, as conceptually shown in FIG.

As shown in FIG. 6, each positioning means 26,
Reference numeral 27 designates a positioning pin 35 which protrudes and retracts from the pin access window 34 provided on the table 5 to the upper surface.
These positioning means 26 and 27 are provided with a guide member 36 mounted on the base 8 of the plate material processing machine 1 or 2 to support the positioning pin 35 so as to be able to move up and down, and to provide a lifting drive source 37 for driving the positioning pin 35 to move up and down. Things. As the elevation drive source 37, a cylinder device or the like is used. It is preferable that each of the positioning means 26 and 27 can set the projection height of the positioning pin 35 at the time of projection at two stages of the most projecting position and the intermediate projecting position. Is used.

As means for positioning the plate material W with respect to the positioning pins 35, a plate material pushing means 38 is provided. The plate pushing means 38 pushes the plate W in a state where the positioning pins 35 are fitted into the reference holes 31 and 32 of the plate W to bring the inner side surfaces of the reference holes 31 and 32 into contact with the side portions of the positioning pins 35. It is. The plate pushing means 38
The work holder 11 is attached to a cross slide 10 for installation. The plate pushing means 38 is a cross slide 1
0, the push / retreat member 4
0 is installed to be able to move forward and backward, and is moved forward and backward by a driving source 41 for push. For example, an air cylinder is used as the push drive source 41. When a load equal to or more than a predetermined pressing force is applied in the advanced state, the push driving source 41 retreats and can perform load control in which the pressing force becomes constant.

As shown in FIG.
Is also used as a means for preventing the lifting of the plate material W at the time of pushing, the leading end of the advancing / retreating member 40 becomes a lifting preventing piece 40b, and a push portion 40a for pushing the end of the plate material W is provided on the lower surface near the leading end. I have. The lower surface of the lifting prevention piece 40b is formed of a hard member different from the main body of the advancing / retreating member 40 to prevent abrasion, and has a tapered surface 40ba for introduction at a lower end thereof. As shown in FIG. 8, the lifting prevention piece 40b is
Are formed in a bifurcated shape separated by a width capable of loosely fitting.

FIGS. 9 and 10 show the measuring instrument 28. FIG. The measuring device 28 includes measurement holes 31 and 32 provided in the plate material W.
A means for measuring the position of a hole such as
And a measurement processing unit 43a (FIG. 3) that detects the coordinate position of the plate material feeding mechanism 7 when the touch sensor 42 detects a contact. The touch sensor 42 is installed on the base 8 via a sensor elevating mechanism 44. The sensor raising / lowering mechanism 44 is means for raising and lowering the touch sensor 42 so that the rod 42a of the touch sensor 42 enters and exits the hole of the plate W on the table 5 from below the table. The sensor elevating mechanism 44 includes a touch sensor 42
Is mounted on the sensor base 45 via a guide 46 so as to be able to move up and down. The sensor driving up and down body 47 is moved up and down by an elevation drive source 48.

As shown in an enlarged view in FIG. 10, the touch sensor 42 has a rod 42a protruding from a detecting means 42b as a sensor body so as to be tiltable.
When a is inclined at a predetermined angle in an arbitrary direction, an ON signal is output.
The rod 42a is provided with a contact portion 42aa at the tip. Note that the touch sensor 42 may be any sensor that can detect contact, and may be a limit switch or the like. The measurement processing unit 43 in FIG.
Is turned on, the detection values of the position detectors 12a and 13a such as pulse coder provided in the servo motors 12 and 13 of each axis are taken in. However, when the measurement in the X-axis direction is performed, the detection value of the X-axis position detector 13a is captured, and when the measurement in the Y-axis direction is performed, the detection value of the Y-axis position detector 12a is captured.

FIG. 3 is a block diagram showing a conceptual configuration of a control system in the plate processing system. The control device of this sheet material processing system includes a first processing machine control means 51 for controlling the sheet material processing machine 1 in the preceding process, and a sheet material processing machine 2 in the subsequent process.
And second processing machine control means 52 for controlling the These processing machine control means 51 and 52 are computer-based numerical control devices and have a function of a programmable controller. Both processing machine control means 51 and 52 may be provided in separate computers, or may be provided in the same computer. Each of the processing machine control means 51, 52 includes a processing program 53,
And decoding execution means 55 and 56 for decoding and executing the processing programs 53 and 54. The decryption execution means 55 and 56 are composed of an arithmetic processing unit such as a CPU, a memory, and the like. Each of the machining programs 53 and 54 is described by an NC code or the like.

This plate processing system implements the following processing method, and the processing programs 53 and 54 of each of the plate processing machines 1 and 2 so that the processing method can be performed.
Are provided with various commands and program parts, and the processing machine control means 52 on the post-process side is provided with a measurement feed control means 58.
, A correction means 59, and a calibration means 60.

The processing method performed by this plate processing system is roughly described as follows. -The main processing required as a product for the same plate W is divided into a pre-process and a post-process, and the pre-process is performed by the pre-process plate processing machine 1 so that the post-process is performed for the post-process. Is performed by each of the plate processing machines 2. When the processing in the preceding step is completed, the plate material W is directly transferred between the two plate material processing machines 1 and 2. That is, the sheet material W is transferred between the sheet material feeding mechanisms 7 of the sheet material processing machines 1 and 2. The plate material processing machine 1 in the pre-process performs two reference holes 31 and 32, which are pre-processed forming holes, before the pre-process in the main process.
Is processed, and after the processing in the previous step is completed, the measurement hole 33 which is a formed hole after the processing is processed. After receiving the plate material W, the plate material processing machine 2 in the post-process moves the plate material W to the positioning means 26 and 27 by the plate material feeding mechanism 7.
Position roughly. The plate material W is accurately positioned with respect to the positioning pins 35 of the positioning means 26 and 27 by the plate material push means 38, and the work material 11 is gripped by the work holder 11. -The position of the measurement hole 33 is measured. Based on the measurement result of the measuring means 43, the feed amount by the plate feed mechanism 7 when performing the post-process is corrected. -Calibration of the measuring device 28 is performed by the calibration means 60 at the time of setting. The processing in the pre-process and the processing in the post-process are divided, for example, as follows. When performing processing of cutting the outer periphery of the product plate material M from the material plate material W, the process of leaving a part of the side of the product plate material M is defined as a process in a pre-process, and the process of the remaining side is defined as a process in a post-process.

The processing program 53 for the pre-process includes, as a command or a program part, a command 53a for carrying-in operation of the plate material W, a command 53b for processing the positioning reference holes 31 and 32, and a main processing for executing the above-mentioned processing method. Among them, there is a program portion 53c for processing in the preceding process, a command 53d for processing the measurement hole 33, and a command 53e for a passing operation. The transfer operation command 53e is a command for causing the plate feeding mechanism 7 to perform a series of operations in order to transfer the plate W to the plate processing machine 2 in the subsequent process. The machining program 54 for the post-process is
In order to carry out the above-described machining method, as a command or a program part, a receiving operation command 54a, a calibration operation command 54b, a positioning operation command 54c, a measurement operation command 54d, and a program part 54e of a previous process in the main processing.
Having. The command 54a of the receiving operation is performed by the sheet feeding mechanism 7 in order to receive the sheet W from the sheet processing machine 1 in the previous process.
To perform a series of operations. The command 54c for the positioning operation is such that the sheet material W is received by the sheet material feeding mechanism 7, and then the sheet material W is sent to the sheet material feeding mechanism 7 by the positioning means 26,2.
7 is a command for performing an operation of roughly positioning, and a command for performing an operation from the pressing operation by the plate material pushing means 38 to the holding of the plate material W by the work holder 11 thereafter. Each of the above commands 53a, 53b, 53
d, 53e, 54a to 54d may be a single command or a group of a plurality of commands.

The feed control means for measurement 58 provided in the processing machine control means 52 for the post-process comprises a measurement operation command 54d in the processing program 54 and a decoding execution means 56 for executing this command. Further, the measurement feed control unit 58, the measurement processing unit 43a, and the measurement device 28 constitute the measurement unit 43. The correcting unit 59 is a unit that corrects the plate feed amount by the plate feed mechanism 7 when performing a post-process based on the measurement result of the measuring unit 43. The calibrating unit 60 is a unit that causes the measuring device 28 to measure the reference hole 31 provided in the plate material W at the time of setting, and calibrates the measuring device 28 based on the measured value. The calibration unit 60 includes a calibration operation command 54 b in the machining program 54, a decryption execution unit 56, and a calibration processing unit 61. The calibration operation command 54b is a command for operating the plate material feeding mechanism 7 and causing the calibration processing unit 61 to recognize the start of the calibration process so that the measurement for calibration is performed by the measuring device 28. The calibration processing unit 61 is a unit that performs arithmetic processing for calibration from a measurement value obtained when measurement for calibration is performed.

Next, a description will be given of a method of processing a plate material by this plate material processing system. FIG. 11 shows a delivery operation of the plate material W, and FIGS. 12 and 13 show a positioning operation and a subsequent measurement operation in the plate material processing machine 2 in a later process. Figure 1
6 shows an example of progress of processing, and FIG. 17 shows an example of progress of another processing. FIGS. 16 and 17 both show a case where the material plate material W shown in FIG.
It is an example in the case of performing the processing of cutting out the. The product plate material M is a rectangular plate material. As the cutting process of the outer periphery, a process of a pair of opposed short sides a and a process of a pair of opposed long sides b are performed. Have

A working example of FIG. 16 will be described. When the plate material processing machine 1 in the pre-process of FIG. 1 receives the material plate material W and is gripped in a positioning state by the work holder 11, first, FIG.
As shown in (A), two positioning reference holes 31,
32 is processed. These reference holes 31 and 32 are formed apart in one processing reference axis direction (X-axis direction). Further, the reference holes 31 and 32 are formed in a product processing unsuitable region R which is set at an end on the near side of the plate material W for gripping by the work holder 11.

After the reference holes 31 and 32 have been processed in this way, the processing of the previous step in the main processing is performed (FIGS. (B) and (C)). In this example, the processing in the pre-process is a processing of a pair of short sides a on the outer periphery of the product plate material M and a processing part c on the inner side, and after the processing of the processing part c on the inner side is completed (FIG. 6B), the short side The processing of a is performed (FIG. 2C). Short side a
Is performed by continuously providing punch holes so as to indicate the punch position of the tool T each time. After the completion of the previous process in the main processing, the measurement hole 33 is processed as shown in FIG. The measurement hole 33 is provided between the reference holes 31 and 32, for example. The measurement hole 33 is
It is preferably provided at the same position in the front-rear direction (Y-axis direction) as the reference holes 31 and 32, and the measurement hole 33 is also provided within the unsuitable product processing region R.

Thus, the processing by the plate processing machine 1 in the preceding process is completed, and the plate W in the processed state is transferred to the plate processing machine 2 in the subsequent process. The post-process plate processing machine 2 cuts the long side b of the product plate M as shown in FIG. By processing the long side b, the product plate material M is separated from the material plate material W. The separated product plate material M is unloaded by the unloading device 4 in FIG. The skeleton, which is the remaining portion of the material plate W, is also carried out by the carry-out device 4.

In the case of the example shown in FIG.
As a pre-process, the inside of the processed portion c of the product plate material M is processed, and as a post-process by the post-process plate processing machine 2, the entire outer periphery of the product plate material M is processed. Others are the same as the example of FIG.

The delivery operation of the plate material W between the plate material processing machines 1 and 2 will be described with reference to FIG. When the processing is completed, the sheet material processing machine 1 in the preceding process, as shown in FIG.
The plate material gripping position by the work holder 11 is changed such that the plate material W protrudes from the end of the cross slide 10 to the transfer side, that is, to the adjacent plate material processing machine 2 side. When three or more work holders 11 are provided as in the example of FIG. 3, the work is held by the two work holders 11 on the transfer side. To change the holding of the plate W by the work holder 11, the work holder 11 is opened while the plate W is pressed onto the table 5 by the plate holding mechanism 25 (FIG. 2), and the work holder 1 is opened.
1 is moved and then closed again. The work holder 11 is moved to the transfer side in a state where the plate material W is gripped so as to protrude on one side in this manner. The post-processing plate processing machine 2 moves the work holder 11 to the pre-processing plate processing machine 1 side, and grips the plate W (FIG. 2B). At this time, the plate material W is attached to the work holders 11 of the two plate material processing machines 1 and 2.
To be in a state of being gripped. The sheet material processing machine 1 in the previous process causes the work holder 11 to release the grip of the sheet material W and perform the retreat operation.

The plate material processing machine 2 in the subsequent process transfers the received plate material W to the positioning means 2 by moving the work holder 11.
The positioning is roughly performed up to the positions of the positioning pins 35 (FIGS. 6 and 13) (FIG. 6C). That is, 2
The plate material W is positioned so that the two reference holes 31 and 32 are located above the respective positioning pins 35 and 35. Thereafter, as described below, after the plate W is restrained by the positioning pins 35, the position of the work holder is changed, the accurate positioning is performed by the plate pusher 38, and the hole position is measured, the work W is gripped by the work holder 11. ((D) in the figure).

FIG. 12 shows the positioning operation by the plate pushing means 38. As shown in FIG. 11C, after the positioning of the plate material W with respect to the positioning pins 35 is performed, the gripping of the plate material W by the work holder 11 is released, and the first step of the positioning pins 35 of the positioning means 26 and 27 is lifted. (The state of the positioning pin is indicated by a dashed line in FIG. 6). As a result, the positioning pins 35 are fitted into the reference holes 31 and 32 (FIG. 13A), and the plate material W is restrained by the positioning pins 35. The release of the grip of the work holder 11 may be performed after the positioning pin 35 is first raised. As described above, when the plate material W is restrained by the positioning pins 35, the work holder 11 is retracted, and the plate material pushing means 3 is moved.
The work holder 11 is moved by the cross slide 10 so that 8 comes to a position corresponding to the positioning pin 35 (FIG. 12A).

Thereafter, the plate pushing means 38 is advanced by the pushing drive source 41 comprising the cylinder device (FIG. 12 (B)).
It is raised to the step (the position shown by the solid line in FIG. 6). The plate material W is pushed forward by the push portion 40a of the plate material pushing means 38 (FIG. 3C). Thereby, the reference holes 31 of the plate material W,
32 is pressed against the side surface of the positioning pin 35 (FIG. 13B), and accurate positioning of the plate material W in the front-rear direction (Y-axis direction) is performed. When the plate material W is pushed by the plate material push means 38, the plate material W is pressed on the upper surface by the lifting prevention piece 40b provided on the plate material push means 38, so that the plate material W is prevented from being lifted up, and a reliable plate material pushing operation can be performed. The inner surfaces of the reference holes 31 and 32 are positioning pins 3
The work holder 11 is moved forward by the carriage 9 in a state of being pressed against the side surface of the plate member W, and the plate material W is gripped by the work holder 11. At this time, the push drive source 41 composed of the cylinder device of the plate material push means 38 is:
Since the upper limit of the pressing force is limited, the plate pushing means 38 stops while maintaining the pressing as the carriage 9 advances, and retreats relatively to the work holder 11 (FIG. 12 (F)). )). When the plate material W is gripped by the work holder 11, the plate material push means 38 is retracted from the plate material W, and the positioning pin 35 is immersed. In this way, the plate material W is accurately grasped by the work holder 11.

The shape of the reference holes 31 and 32 of the plate W may be circular, but in this example, it is a rectangle such as a square as shown in FIG. The positioning pin 35 is attached to the reference hole 3
The cross-sectional shape is in a direction corresponding to 1, 32. Of the two positioning pins 35, the positioning pin 35 on the origin side (the right side in FIG. 13) adjusts the cross-sectional dimension of the portion fitted into the reference hole 31 by the front and rear width B1y and the left and right width B1x. Same dimensions as width A1y and left and right width A1x (for example, 20 mm
Corner). Strictly, there is a slight dimensional difference that allows insertion and removal, and the positioning pin 35 has a smaller diameter than the reference hole 31. In FIG. 13, the dimensional difference is emphasized for easy understanding of the operation description. The other positioning pin 35 has a cross-sectional dimension of a portion fitted into the reference hole 31, the front-rear width B2y is equal to the front-rear width A2y of the reference hole 32, but the left-right width B2x has a play with respect to the left-right width A2x of the reference hole 32. Are the dimensions where Due to this play, errors in the distance between the reference holes 31 and 32 and the like are absorbed. The shape and size of the reference holes 31 and 32 on both sides are
They have the same shape and size. Also, the reference hole 31
And the measurement hole 33 have the same shape and size.

The measuring operation will be described. After the workpiece W is accurately grasped by the work holder 11 as described above (FIG. 13B), the position of the measurement hole 33 is measured as shown in FIG. In this measurement, after the touch sensor 42 of the measuring device 28 is lifted and the rod 42a is inserted into the measurement hole 33, the plate material W is moved by the plate material feeding mechanism 7, that is, by moving the work holder 11 to the front, rear, left and right. The measurement processing unit 43a captures the position data of the position detectors 12a and 13a of the axis servomotors 12 and 13 when the touch sensor 42 is turned on. The position measurement is performed using the Y coordinate of the front and rear two points in the measurement
This is performed with respect to the X coordinate of the point, and the center coordinate is the measurement hole 3
3 position. That is, when the inner surface positions X1, X2, Y1, and Y2 of the measurement hole 33 are defined as shown in FIG. 13C, the center coordinates X and Y of the measurement hole 33 are X = (X1 + X2) / 2, respectively. Y = (Y1 + Y2) / 2.

The correction means 59 shown in FIG.
Of the center coordinates X, Y of the hole position coordinates X ₀ , Y
Compared with ₀ , if the error amount in any direction is within the set value, the processing start of the plate material processing machine 2 by the processing machine control means 52 is permitted, and if it exceeds the set value, the processing start is not permitted. , Raise an alarm. When the error amount is within the set value, the correction means 59 corrects the plate material feed amount by the plate material feed mechanism 7 when performing post-process processing according to the error amount. The correction according to the error amount is, for example, approximately half of the error amount. It may be exactly 1/2 of the error amount. The reason why the number is reduced to approximately half is as follows. The processing error of each processing portion processed by the plate processing machine 1 in the previous process differs depending on the portion of the plate W, whether it is performed in the early stage or the last stage in the previous process, and the like. Therefore, by setting substantially half of the measured error amount as the correction amount of the plate material feed, the plate material W
Are averaged, and even if a defective product occurs, the number of defective products can be reduced as much as possible.

Next, the calibration will be described. The calibration means 60 of FIG. 3 performs the following operation and processing. When the plate processing machine 2 is started, the measuring device 28 is caused to perform measurement for calibration. When performing calibration, the positioning pin 35
Then, the plate material W is accurately positioned using the plate material push means 38, and after the plate material W is gripped by the work holder 11, the measurement hole 33 is measured instead of the reference hole 31 as shown in FIG. This is done by measuring This measurement is performed for the Y coordinate of the front and rear two points and the X coordinate of the left and right two points in the reference hole 31 as in the case of the measurement of the measurement hole 33, and the center coordinate is the position of the measurement hole 33. It is said. The measured center coordinates are stored in the calibration processing unit 61 as reference values.

At the time of processing, the calibration means 60 measures the position of the reference hole 31 at the time of setting (every time or once every several times) in the same manner as described above, and stores the measured value as described above. If the error is larger than the allowable range as compared with the value, it is diagnosed that the measuring device 28 is defective. Further, the calibration means 60 causes the measuring device 28 to periodically measure the reference hole 31 and monitors whether there is any change with respect to the reference value stored as described above.
The calibration and the reflection of the result are performed, for example, as follows. The position of the reference hole 31 of the plate material W is measured by the measuring device 28 to determine a measuring device error. During a normal operation, the measurement hole 33 is measured by the measuring device 28 as described above, and an error of the uncalibrated measurement hole position is obtained. Based on the measurement instrument error, the error of the uncalibrated measurement hole position is corrected to obtain a calibrated error. Correcting means 59 based on this calibrated error
The feed amount is corrected. Note that the calibration operation command 54b in the machining program 54 is jumped except at the time of setting.

According to this plate material processing system, the position of the measurement hole 33 formed after processing by the plate material processing machine 1 in the preceding process is measured by the plate material processing machine 2 in the subsequent process. Accordingly, in order to correct the plate material feeding amount when performing the post-process, the post-process can perform the process according to the processing error generated in the previous process. Therefore, the influence of the processing error accompanying the delivery between the plate processing machines 1 and 2 can be reduced, and the occurrence of defective products can be prevented. The measuring means 43 includes a rod 42a which can enter holes 31 to 33 provided in the plate material W,
It has a detecting means 42b for detecting that 2a has hit the inner surfaces of the holes 31 to 33, and a measuring plate feed controlling means 58 for controlling the plate feed mechanism 7 to apply the rod 42a to the inner surfaces of the holes 31 to 33. Therefore, the hole position can be measured by using the plate feeding mechanism 7 provided for processing. Therefore, it is not necessary to provide a mechanism for moving the detecting rod 42a for measurement in the measuring means 43, and the configuration is simple.

The post-processing plate processing machine 2 inserts the positioning pins 35 into the two reference holes 31 and 32 provided in the plate W,
Since the inner surfaces of the reference holes 31 and 32 are pressed against the positioning pins 35 for positioning, the plate W is not inclined with respect to the orthogonal axes (X axis, Y axis) regardless of the curvature or inclination of the end of the plate W. Can be positioned. Positioning pin 35
The plate pushing means 38 for pressing the inner surfaces of the reference holes 31 and 32 against the positioning pins 35 for holding the plate W when the work W is held by the work holder 11 by the movement of the carriage 10. The plate material can be gripped by the work holder 11 while maintaining the accurate positioning state. The plate material pushing means 38 has a piece 40b for preventing the plate material from being lifted at the end thereof, and serves both for preventing the lifting and for pushing the plate material.

Further, the calibration means 61 is provided as described above,
Since the measuring device 28 was measured at the time of setting the reference hole 31 provided in the plate W separately from the measuring hole 33, and the measuring device 28 was calibrated based on the measured value, the measuring device 2
Even if error factors such as bending of the rod 42b of No. 8 occur, correct measurement can be performed.

According to the sheet material processing method described with reference to FIG. 16, a part b of the product sheet material M is
Is performed, and the remaining side b is processed by the plate material processing machine 2 in the post-process, so that the amount of processing performed by both the plate material processing machines 1 and 2 can be averaged. Therefore, the two plate processing machines 1 and 2 can be used efficiently, and the processing efficiency is improved. In the process of cutting the product plate material M from the material plate material W, the rigidity of the plate material W decreases with the progress of the processing, but in this processing method, the short side a is processed first, and in this state, the plate material processing in the subsequent process is performed. Since the sheet material W is transferred to the machine 2, the plate material W can be transferred with a relatively small decrease in rigidity, and a decrease in processing accuracy can be avoided. Therefore, high-precision processing can be performed while performing efficient processing by the two plate processing machines 1 and 2. FIG.
As shown in the plate material processing method shown in FIG. The processing amounts of the two plate material processing machines 1 and 2 can be averaged, and efficient processing can be performed. In this case, since the inside is processed by the plate material processing machine 1 in the preceding process, the rigidity of the plate material W is less reduced at the time of delivery to the plate material processing machine 2 in the subsequent process, and the reduction in processing accuracy due to the reduced rigidity can be prevented. And high-precision processing can be performed.

The plate processing method of the present invention may be the following processing method in addition to the method described in each of the above embodiments. That is, a plate material processing machine that performs processing in the preceding process, and a plate material that receives a plate material processed by the plate material processing machine and processes the plate material by a post-processing plate material processing machine that performs subsequent processing on the received plate material In the processing method, when the product plate is rectangular, in processing for cutting the outer periphery of the product plate, a short side of the product plate is processed by a plate processing machine in a previous process, and a plate processing machine in a post process is used. Basically, the processing of the long side of the product sheet material, the cycle time of processing in the sheet material processing machine in the previous process, the processing in the sheet material processing machine in the subsequent process, and the operation of unloading the processed sheet material with the unloading device In order to make a part of the long side processing that the post-processing plate processing machine should perform in the pre-processing plate processing machine so that it is longer or equal to the cycle time of the combined processing . It is preferable that a part of the processing of the long side referred to here is a unit of the side. For example, when cutting the outer periphery of a plurality of product plate materials from a plate material, the entire length of any long side of any one of the product plate materials is made to be performed by the plate material processing machine in the preceding process.

[0043]

According to a first aspect of the present invention, there is provided a sheet material processing method for performing a preceding step, a sheet material processed by the sheet material processing machine, and subsequent processing of the received sheet material. A plate material processing method for processing a plate material by a plate material processing machine in a post-process of performing, in the processing of cutting the outer periphery of the product plate material cut out from the plate material, processing to leave a part of the side of the product plate material, Since this is a method in which the plate material processing machine in the preceding process performs the processing of the remaining side by the plate material processing machine in the subsequent process, two plate material processing machines can be used efficiently, and the processing efficiency can be improved. When the product plate is rectangular, in the process of cutting the outer periphery of the product plate, the short side of the product plate is processed by the plate processing machine in the previous process, and the long side of the product plate is processed by the plate processing machine in the post process If you do
Insufficient rigidity of the plate material during processing can be resolved, and accurate processing can be performed. A sheet material processing method according to a second aspect of the present invention includes a sheet material processing machine that performs processing in a preceding process, and a sheet material processing machine that receives a sheet material processed by the sheet material processing machine and performs subsequent processing on the received sheet material. A sheet material processing method for processing a sheet material with a sheet material processing machine, wherein, among the processing of cutting an outer periphery of a product sheet material to be cut from the sheet material and an inner process of the product sheet material, the inner processing is performed in a preceding step. In this method, the outer periphery is processed by a plate material processing machine in a later process, so that two plate material processing machines can be used efficiently, and the processing efficiency can be improved. In addition, the rigidity of the plate material during processing can be eliminated, and accurate processing can be performed.

[Brief description of the drawings]

FIG. 1 is a plan view of a plate processing system to which a plate processing method according to an embodiment of the present invention is applied.

FIG. 2 is an operation explanatory view showing the plate material processing system in a plan view.

FIG. 3 is a block diagram showing a conceptual configuration of a control system of the sheet material processing system.

FIG. 4 is a cutaway side view of the work holder.

FIG. 5 is a plan view of the work holder.

FIG. 6 is a side view of a positioning unit and a plate pushing unit.

FIG. 7 is a partially enlarged side view of the plate pushing means.

FIG. 8 is a partially enlarged plan view of the plate pushing means.

FIG. 9 is a side view of the measuring device.

FIG. 10 is a side view of the touch sensor.

FIG. 11 is an explanatory diagram of a plate material transfer operation of the plate material processing system.

FIG. 12 is an explanatory diagram of a positioning operation in a sheet material processing machine in a post-process.

FIG. 13 is an explanatory diagram of a positioning operation and a measurement operation in the sheet material processing machine in a post-process.

FIG. 14 is a partially enlarged cross-sectional view showing a relationship between a measurement hole of a plate material and a measurement device.

FIG. 15 is a plan view showing the relationship between a material plate and a product plate.

FIG. 16 is an explanatory process diagram of an example of a sheet material processing method by the sheet material processing system.

FIG. 17 is a process explanatory view of another example of the sheet material processing method by the sheet material processing system.

[Explanation of symbols]

 1, 2, plate processing machine 5, table 6, processing unit 7, plate feed mechanism 8, frame 9, carriage 10, cross slide 11, work holder 12, 13, servo motor 12a, 13a, position detectors 26, 27 Positioning means 28 ... Measuring equipment 31, 32 ... Reference hole 33 ... Measurement hole 34 ... Pin access window 35 ... Positioning pin 38 ... Plate push means 40a ... Push portion 40b ... Floating prevention piece 42 ... Touch sensor 42a ... Rod 42b ... Detection Means 43a Measurement processing units 51, 52 Processing machine control means 53, 54 Processing program 58 Measurement feed control means 59 Correction means 60 Calibration means 61 Calibration processing unit a Short side b Long side c Inside processing part P1, P2 ... processing position W ... plate material M ... product plate material

Claims (3)

[Claims] 1. A plate material processing machine for performing a pre-process processing, and a plate material processing machine for receiving a plate material processed by the plate material processing device and performing a subsequent process on the received plate material in a subsequent process. In the sheet material processing method of performing, the processing of leaving a part of the product sheet material in the processing of cutting the outer periphery of the product sheet material cut from the sheet material, performed by the sheet material processing machine in the previous process, the remaining A sheet material processing method in which a side is processed by a sheet material processing machine in the post-process. 2. When the product plate is rectangular, in processing for cutting the outer periphery of the product plate, a short side of the product plate is processed by a plate processing machine in a preceding process, and a short side of the product plate is processed by a plate processing machine in a post process. The plate material processing method according to claim 1, wherein the long side of the product plate material is processed. 3. A plate material processing machine for performing a pre-process processing, and a plate material processing machine for receiving a plate material processed by the plate material processing device and performing a subsequent process on the received plate material in a subsequent process. A cutting method of the outer periphery of the product sheet material to be cut from the sheet material, and of the inner processing of the product sheet material, the inner processing is performed by a sheet material processing machine in a previous process, and the outer periphery processing is performed. A sheet material processing method performed by a sheet material processing machine in a later process.