JP2010158697A - Device for determining repositioning position of plate material and determination program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plate material repositioning position determination device which can determine a proper repositioning position capable of realizing highly efficient working according to provided working data and to provide a plate material repositioning position determination program. <P>SOLUTION: A repositioning position determination device 1 includes a candidate position designating part 5 that successively designates a plurality of candidate positions as a repositioning position and a necessary condition determining part 6 that determines whether the designated candidate position satisfies a set necessary condition. The repositioning position determination device 1 further includes an evaluation part 7 that evaluates the candidate position having been determined to satisfy the necessary condition, and a repositioning position determining part 8 that allows the designation and evaluation of the candidate position to be performed, until a search termination condition is satisfied, determines the candidate position having the highest evaluation value as a pressing position, and outputs the pressing position data. The candidate position designating part 5 performs grouping of working for each of working heads M1 to M3 and renders working by only the main working head M1 sufficient for contemplated results. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a plate material position determination device and a determination program applied to creation of a processing program of a plate material processing machine represented by a sheet metal processing machine such as a punch press or a laser processing machine.

In a general plate material processing process, first, product design such as switchboards and control panels is performed, and a development view of component plate materials constituting the product is created. Then, a die is assigned to the component plate material (in the case of processing by a punch press), and a nesting operation for efficiently removing the component plate material to which the die is assigned from the material plate material is performed. Finally, the nesting result is output as processing data and processing is performed.
When this processing is performed, all processing may not be performed at a single gripping position by the work holder of the plate material feeding apparatus because the maximum processing range is exceeded or there is a dead zone. In this case, the plate material processing machine performs repositioning, which is a re-holding process of the work holder holding the work. This repositioning is performed while pressing the work with the reposition pad so that the work does not deviate from the set position. However, the time required for the repositioning leads to a decrease in machining efficiency, and the re-holding of the workpiece by the repositioning affects a decrease in machining accuracy.
For this reason, it is desired to output machining data with a small number of repositions and a short machining time as the sheet metal machining data.

These machining data generation operations are carried out on a computer (CAD / CAM system for sheet metal processing), but there are various types of molds for the developed parts to which the molds generated in the work process are assigned. In the multi-tasking machine, the processing range varies depending on the processing head used (punch processing head, laser processing head, tap processing head, etc.), so it is very difficult to output processing data with high production efficiency. It was a difficult task.
Various systems have been developed and put to practical use as systems for supporting this work. However, there are various combinations of processing positions, and there are cases where the processing positions cannot be adequately handled.

  FIG. 19 shows an example of a repositioning operation by a conventional system. FIG. 4A shows a concept of performing the repositioning, which is a change of the plate material by the work holder 36, twice when each component plate material Wa is processed from the material plate material W. In the figure, the symbol E indicates a region that can be processed by the processing head. FIG. 5B shows the operation of the operator on the computer.

Japanese Patent No. 3444150 Japanese Patent No. 3269450 JP 2002-1464 A

  In any conventional plate material repositioning position determination system, the operation of performing repositioning is fixed. For example, a position determination method is adopted in which a certain amount is avoided only when the amount of repositioning is fixed depending on the material size or when a phenomenon such as interference with the work holder occurs. Therefore, the processing position according to the given data could not be determined.

An object of the present invention is to provide a plate material position determination device and a determination program capable of determining an appropriate position for performing efficient processing on given processing data.
For example, it is also an object of the present invention to provide a flexible system capable of presenting various repositioning results including processing positions and processing orders and taking into consideration workability and processing time when determining an appropriate position.
Another object of the present invention is to enable a suitable processing position to be determined efficiently with a simple process even when the plate material processing machine is a combined processing machine having a plurality of processing heads. Still another object of the present invention is to make it possible to determine a more appropriate position position in consideration of the direction change of the layout of the processing site.
Still another object of the present invention is to make it possible to determine a reposition position that can reduce the number of repositions.
Still another object of the present invention is to appropriately determine a reposition position in an automatic programming process of a processing program of a plate material processing machine.

The plate material reposition position determining device (1) according to the present invention is a device applied to a plate material processing machine (30) that performs processing of a local processing site on a flat plate material (W) at a plurality of locations.
The plate material processing machine (30) includes a table (31) on which the plate material (W) is placed, and a processing head (M (M1, M2, M3)) for processing the plate material (W) on the table (31). A plate material feed mechanism (33) having a work holder (36) for gripping the plate material (W) and moving the plate material (W) back and forth and left and right relative to the machining head (M), and the work holder (36) And a plate pressing mechanism (42) for pressing the plate (W) against the table with the pressing member (41) when performing a repositioning operation for changing the gripping position of the plate (W) by the above.
This plate material pressing position determining device (1)
Data input means (2) for storing processing information, which is processing information applied to the plate (W), in processing information storage means (3);
Based on the machining information stored in the machining information storage means (3), a position position determining means (deposition position determining means for determining a position to be changed of the gripping position of the work holder (W) when performing the repositioning operation ( 4).
This reposition position determining means (4)
A candidate position designating part (5) for sequentially designating a plurality of candidate positions as the position of reposition according to the setting rule (R1);
A necessary condition determining unit (6) for determining whether the candidate position specified by the candidate position specifying unit (5) satisfies the setting necessary condition;
An evaluation unit (7) that evaluates as an evaluation value according to the setting rule (R2) for candidate positions determined to satisfy the necessary condition by the necessary condition determining unit (6);
The candidate position is designated by the candidate position designation unit (5) and evaluated by the evaluation unit (7) until the search end condition is reached, and the candidate position with the highest evaluation value evaluated by the evaluation unit (7) is selected. And a reposition position determining section (8) for determining and outputting as a pressing position.

According to this configuration, the processing information, which is processing information applied to the plate material (W), is stored in the processing information storage unit storage (3) by the data input unit (2). The processing information is not limited to the information that directly indicates the shape to be processed as graphic data, but may be, for example, identification information of the tool used, information on the processing position by each tool, and information on the shape of the tool used. .
The reposition position determining means (4) sequentially designates a plurality of candidate positions of the reposition position according to the setting rule (R1) by the candidate position designation unit (5). If multiple positions are required to complete machining, information indicating the position of each position is specified as a group of candidate positions, and such a group of candidate positions is specified multiple times. Do it sequentially. The necessary condition determination unit (6) determines whether the candidate position specified by the candidate position specifying unit (5) satisfies the setting necessary condition. The setting necessary condition may be determined as appropriate, but it is determined whether or not the position is an executable position. The evaluation unit (7) evaluates the appropriateness as an evaluation value according to the setting rule (R2) for the candidate position determined to satisfy the necessary condition by the necessary condition determining unit (6). The appropriateness is, for example, the number of repositions. The reposition position determination unit (8) causes the candidate position designation unit (5) to designate a candidate position and perform evaluation by the evaluation unit (7) until the search end condition is reached, and the evaluation unit (7) performs evaluation. The candidate position (P) having the highest evaluation value is determined as a pressing position and output.
In this way, for a plurality of candidate positions that are reposition positions, suitability or the like is evaluated as an evaluation value according to the setting rule (R2), and the candidate position with the highest evaluation value is determined as the pressing position. Therefore, it is possible to determine an appropriate position position where efficient machining can be performed. In addition, in order to evaluate and compare a plurality of candidate positions as the position, the appropriate position position is determined within a practical processing time by appropriately determining the candidate position and setting the search end condition. Can be determined.

In the present invention, the plate material processing machine (3) may have a plurality of processing heads (M (M1, M2, M3)) that perform different processing from each other. The number of processing heads (M) may be two, three, or four or more. In this case, the reposition position determining means (4)
When information on processing using different processing heads (M1, M2, M3) is mixed as information on individual processing in processing information input to the data input means (2), information on individual processing in the processing information A grouping unit (9) for grouping for each processing head (M1, M2, M3) used for processing,
An in-group machining area calculation unit (10) that calculates an in-group machining area that is an area for performing all machining in the group for each group divided into groups,
A common machining area which is an area including the in-group machining area of all the groups is calculated, and this common machining area is compared to the machining area within the group of one main machining head (M1) determined as a reference, with other machining heads ( For the in-group machining area of M2, M3), a common machining area calculation unit (11) is set to an area shifted in the direction opposite to the offset direction by the offset amount of the installation position of the main machining head (M1) and the machining head of the corresponding group. )
The candidate position specifying unit (5) may specify the candidate position for the common processing region.
In this way, machining information is grouped for each machining head (M1, M2, M3) used for machining, and a single machining area is calculated based on one main machining head (M1). Candidate positions for the reposition position can be specified and evaluated using the machining head (M1) as a reference. Therefore, even in the case of machining using a plurality of machining heads (M1, M2, M3) separated from each other, an appropriate position position can be obtained with a simple arithmetic process.

In the present invention, the candidate position specifying unit (5), the necessary condition determining unit, (6), and the evaluating unit (7) are configured to input a data input means ( 2) Candidate positions including both the layout layout in which the direction is changed by 180 ° with respect to the layout layout in the processing information input in 2) or the layout layout in which the direction is not reversed or the front / back is reversed It is also possible to perform specification, determination of satisfaction of setting necessary conditions, and evaluation.
As described above, if the entire layout of each processing portion remaining after the repositioning operation is determined including the case where the direction change or the front / back reversal is performed, a more appropriate reposition position can be determined. Note that, when the above-described grouping is performed, the entire layout is the layout of the respective processing parts in the common processing region.

In this invention, the setting rule (R2) of the evaluation unit (7) uses the number of repositions necessary for the calculation of the evaluation value until the end of the machining of all machining sites, and the lower the number of repositioning, the higher the evaluation. It may be a value.
By determining the setting rule (R2) of the evaluation unit (7) as described above, it is possible to determine a reposition position with a small number of repositions. Efficient machining can be performed by reducing the number of repositions.

In this invention, the reposition position determined and output by the reposition position determining unit (8) is determined by the automatic programming device (20) of the machining program (15) for numerically controlling the plate material processing machine (30). A feed command (Rc) for causing the plate material feed mechanism (33) to perform a positioning operation after the command (Rb) of the press operation by the plate material pressing mechanism (42) in the machining program (15) and the command to release the work holder. The position may be the command position.
With this configuration, it is possible to appropriately determine the reposition position in the automatic programming process of the machining program (15).

In the control of the plate material processing machine (30), the plate material reposition position determination program of the present invention controls the plate material processing machine (30) that performs processing of a local processing site on a flat plate material (W) at a plurality of locations. A program for determining a reposition position that is a change destination position of a gripping position of the work holder (36) in a repositioning operation that is an operation of changing a gripping position of the plate material (W) by the work holder (36). It is an executable program.
This plate material reposition position determination program is
A data input procedure (S1) for storing processing information, which is processing information applied to the plate material (W), in a predetermined storage area;
And a position determination procedure (S2) for determining the position based on the stored processing information.
This position determination procedure (S2)
A candidate position designation procedure (Q2) for sequentially designating a plurality of candidate positions as the position of reposition according to the setting rule;
A necessary condition determining procedure (Q3) for determining whether or not the candidate position specified by the candidate position specifying procedure (Q2) satisfies the setting necessary condition;
An evaluation procedure (Q4) for evaluating the candidate position determined to satisfy the necessary condition in this necessary condition determining procedure (Q3) as an evaluation value according to the setting rule;
The candidate position is designated by the candidate position designation procedure (Q2) and evaluated by the evaluation procedure (Q4) until the search end condition is reached, and the candidate position having the highest evaluation value evaluated by the evaluation procedure (Q4) is selected. A determination and output procedure (Q6, Q8) for determining and outputting as a pressing position.
According to the plate material position determination program of this configuration, as described with respect to the plate material pressing position determination device (1) of the present invention, an appropriate position position at which efficient processing can be performed on given processing data. Can be determined.

The plate material position determination program of the present invention can also be applied to the case where the plate material processing machine (30) has a plurality of processing heads (M1, M2, M3) that perform different processing from each other. In that case,
The reposition position determination procedure (S2)
In the case where information on processing using different processing heads (M1, M2, M3) is mixed as information on individual processing in processing information input to the data input means, information on individual processing in the processing information is processed. Grouping procedure (U1) for grouping for each processing head (M1, M2, M3) used for
For each group grouped in this grouping procedure (U1), an in-group machining area calculation procedure (U2) for calculating an in-group machining area that is an area for all machining in the group;
A common machining area that is an area including the in-group machining area of all the groups is calculated. This common machining area is different from the machining area within the group of one main machining head (M1) defined as a reference. The in-group processing area of (M2, M3) is a common area that is shifted in the direction opposite to the offset direction by the offset amount of the installation position of the main processing head (M1) and the processing head (M2, M3) of the corresponding group. Machining area calculation procedure (U3),
The candidate position specifying procedure (Q2) may be a procedure for specifying the candidate position for the common processing region.
With the program having this configuration, the plate material processing machine (30) is a combined processing machine having a plurality of processing heads (M1, M2, M3), as described for the plate material pressing position determination device (1) of the present invention. Even in a certain case, an appropriate reposition position can be determined efficiently by a simple process.

  The plate material position determination device of the present invention is a plate material position determination device applied to a plate material processing machine that performs processing of a local processing portion on a flat plate material at a plurality of locations, the plate material processing The machine includes a table on which the plate material is mounted, a processing head that processes the plate material on the table, a plate material feeding mechanism that has a work holder that grips the plate material and moves the plate material back and forth and left and right relative to the processing head. A plate material pressing mechanism that presses the plate material against the table with a pressing member when performing a repositioning operation for changing the gripping position of the plate material by the work holder. Data input means for storing the machining information in the machining information storage means, and the repository based on the machining information stored in the machining information storage means. Reposition position determining means for determining a reposition position that is a change destination position of the gripping position of the work holder when performing the operation, and the reposition position determining means includes a plurality of position positions according to the setting rule. A candidate position designating unit that sequentially designates candidate positions, a necessary condition determining unit that determines whether the candidate position specified by the candidate position designating unit satisfies the setting necessary condition, and a necessary condition in the necessary condition determining unit The evaluation unit that evaluates the candidate position determined to satisfy as an evaluation value according to the setting rule, the designation of the candidate position by the candidate position designation unit and the evaluation by the evaluation unit until the search end condition is reached, and the evaluation A position determination unit that determines and outputs the candidate position with the highest evaluation value evaluated in the Relative machining data, efficient processing can be performed can determine the appropriate record position location. For example, when determining an appropriate repositioning position, it is possible to provide a flexible apparatus that can present various repositioning results including the processing position and the processing order and further considering workability and processing time.

  The plate material processing machine has a plurality of processing heads that perform processing different from each other apart from each other, and the reposition position determination means uses different processing heads as information of individual processing in the processing information input to the data input means. When the processing information using is mixed, the grouping unit for grouping the individual processing information in the processing information for each processing head used for processing, and all the members in the group for each grouped group The in-group machining area calculation unit that calculates the in-group machining area that is the area where the machining is performed, and the common machining area that is the area including the in-group machining area of all the groups are calculated. For the machining area within the group of one main machining head to be determined, the machining area within the group of other machining heads A common machining area calculation unit which is an area shifted in the opposite direction to the offset direction by the offset amount of the installation position of the head and the machining head of the corresponding group, and the candidate position designation unit is When the candidate position is designated, even when the plate material processing machine is a combined processing machine having a plurality of processing heads, an appropriate reposition position can be determined efficiently with simple processing.

  The candidate position designating unit, the necessary condition determining unit, and the evaluating unit are 180 ° with respect to the arrangement layout in the machining information input by the data input means for the entire arrangement layout of each machining part remaining after the repositioning operation. Specify the candidate position, determine whether the setting requirements are satisfied, and evaluate the layout, including both the layout layout with the direction changed or the front and back reversed and the layout without the direction change or the front / back reverse. In the case of an object, it is possible to determine a more appropriate position position in consideration of the direction change of the layout of the processing site and the reverse of the front and back.

  When the setting rule of the evaluation unit is to use the number of repositions necessary until the end of machining of all machining parts for the calculation of the evaluation value, and the lower the number of repositioning, the higher the evaluation value, The number of repositions can be determined small.

  In the automatic programming device of the machining program for numerically controlling the plate material processing machine, the position position determined and output by the position position determining unit is a command for pressing operation by the plate material pressing mechanism in the machining program, and the work holder If it is the position that is the command position of the feed command that causes the plate material feed mechanism to perform positioning after the grip release command, determine the reposition position in the automatic programming process of the processing program of the plate material processing machine. Can be done.

  The plate material reposition position determining program of the present invention can be executed by a computer, and in the control of a plate material processing machine that performs processing of a local processing site on a flat plate material at a plurality of locations, a work holder of the plate material processing machine A repositioning position determination program for determining a repositioning position to be a change destination position of a gripping position of a work holder in a repositioning operation, which is an operation for changing a gripping position of a plate material by a processing information, A data input procedure for storing certain machining information in a predetermined storage area, and a position determination procedure for determining the position based on the stored machining information. A candidate position specifying procedure for sequentially specifying a plurality of candidate positions as the position of reposition according to the setting rule; A setting rule for a necessary condition determining procedure for determining whether or not a candidate position specified by this candidate position specifying procedure satisfies the setting necessary condition, and for a candidate position determined by the necessary condition determining procedure to satisfy the necessary condition According to the evaluation procedure to be evaluated as an evaluation value, and the candidate position designation by the candidate position designation procedure and the evaluation by the evaluation unit until the search end condition is reached, and the candidate position with the highest evaluation value evaluated in the evaluation procedure Therefore, it is possible to determine an appropriate position position where efficient machining can be performed on given machining data.

  The plate material processing machine has a plurality of processing heads that perform processing different from each other apart from each other, and the reposition position determination procedure is different processing information as individual processing information in the processing information input to the data input means. When the processing information using is mixed, the individual processing information in the processing information is grouped for each processing head used for processing, and for each group grouped by this grouping procedure Intra-group machining area calculation procedure for calculating in-group machining area, which is an area for all machining in the group, and a common machining area that is an area including the in-group machining area for all groups, and this common machining area The processing area within the group of one main processing head defined as the standard is changed to the processing area within the group of other processing heads. A common machining area calculation procedure in which the main machining head and the machining head of the corresponding group are shifted in the direction opposite to the offset direction by an offset amount of the installation position, and the candidate position designation procedure is the common If the candidate position is specified for the machining area, even if the plate processing machine is a multi-tasking machine with multiple machining heads, the appropriate position position can be determined efficiently with simple processing. can do.

(A) is explanatory drawing of the conceptual structure of the automatic programming apparatus provided with the board | plate material reposition position determination apparatus which concerns on one Embodiment of this invention, (B) is the conceptual structure of the board | plate material reposition position determination apparatus and a board | plate material processing machine. It is explanatory drawing shown. It is a schematic flowchart of the board | plate material reposition position determination program concerning the embodiment. It is a flowchart of the position position determination procedure in the same plate material position position determination program. It is a flowchart of the candidate position designation | designated procedure by grouping of the board | plate material reposition position determination program. It is a conceptual diagram of the whole process in the board | plate material reposition position determination apparatus and determination program. It is explanatory drawing which shows the relationship between the process location of the whole process information, and the processable area | region of a main process head with a top view. It is explanatory drawing which shows the relationship between the main process head and the process part of the process group by this main process head with a top view. It is explanatory drawing which shows the relationship between a sub process head (laser) and the process location of the process group by this sub process head with a top view. It is explanatory drawing which shows the relationship between a sub process head (tap) and the process location of the process group by this sub process head with a top view. It is explanatory drawing of the process area in a group after the offset of M2 group. It is explanatory drawing of the process area in a group after the offset of M3 group. It is explanatory drawing of a common process area | region. It is explanatory drawing which shows the relationship between the common process area | region before a position, and the processable area | region of a main head. It is explanatory drawing of the new common process area | region after a position position. It is explanatory drawing which shows the relationship between the process of a new common process area | region, and the processable area | region of a main head. It is an image figure of an example which shows the relationship between processing content and a reposition. It is explanatory drawing of the example which considers the direction change of arrangement | positioning layout. It is a perspective view which shows an example of the board | plate material processing machine using the determination result of the board | plate material reposition position determination apparatus. It is explanatory drawing of a prior art example.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 18 shows an example of a plate material processing machine 30 to which the plate material pressing position determination device is applied. The plate material processing machine 30 is a processing machine that performs processing of local parts on a flat plate material W at a plurality of locations. The plate material processing machine 30 includes a table 31 on which the plate material W is placed, a plurality of processing heads M (M1, M2, M3) for punching the plate material W on the table 31, and a work holder 36 that holds the plate material W. The plate material feed mechanism 33 that moves the plate material W back and forth and right and left relative to the machining head M and the plate material W on the table 31 when performing a repositioning operation for changing the gripping position of the plate material W by the work holder 36. A plate pressing mechanism 42 that is pressed by the pressing member 41 is provided.

  The plate material processing machine 30 of this embodiment is a composite processing machine based on a turret punch press, in which the main processing head M1 is a punching head, and the sub processing heads M2 and M3 are a laser processing head, And a tapping head. The plurality of processing heads M1, M2, and M3 are disposed apart from each other in the left-right direction (X-axis direction). The sub machining head M2 may be provided with, for example, a punch machining head having a single die for final cutting of the component plate material, instead of the laser machining head. The plurality of machining heads M1, M2, and M3 may be separated from each other in the front-rear direction (Y-axis direction). The frame 45 is provided with a horizontally rotatable turret 44 on which a plurality of punch tools (not shown) are mounted. The main machining head M1 has a punch tool located at a predetermined machining position O1 as the center of the machining head. It consists of a ram that moves up and down. The sub machining heads M2 and M3 perform machining at machining positions O2 and O3 which are the machining head centers.

  The plate material feed mechanism 33 is mounted on a carriage 34 that can move forward and backward (Y direction) on the lower frame portion 45a of the frame 45, and a cross slide 35 that can move left and right (X direction). The holder 36 is mounted side by side. The carriage 34 and the cross slide 35 are advanced and retracted via a feed screw mechanism such as a ball screw by servo motors 37 and 38 (FIG. 1) of the respective axes. The work holder 36 has a pair of upper and lower jaws that sandwich the edge of the plate member W up and down, and is opened and closed by a drive source such as an air cylinder (not shown). The plate material pressing mechanism 42 moves up and down a pressing member 41 called a reposition pad or the like by a lifting drive source 43 such as an air cylinder, and is installed in an upper frame portion 45 b of the frame 45.

  In FIG. 1, the plate material reposition position determination device 1 is provided as a part of an automatic programming device 20 that creates a machining program 15. The processing program 15 is a program that is executed by a numerical control device (not shown) that numerically controls the plate material processing machine 30. The machining program 15 lowers the machining head M1 composed of a ram, for example, a feed command for each axis of the plate material feed mechanism 33 of the plate material processing machine 30 or a command for causing the machining head M (M1, M2, M3) to perform a machining operation. This is a program in which, for example, a punch operation command to be executed is described in the order of execution using NC codes or the like. As one of the commands of the machining program 15, a reposition command R is provided.

The reposition command R includes the following series of commands: a move command Ra for moving the plate material W to a position where the plate material feed mechanism 33 presses the press member 41, a press command Rb for causing the plate material press mechanism 42 to perform a pressing operation, A command to open 36 and release the grip (not shown), a move command Rc to move the work holder 36 to the next gripping position of the plate W, and a command (not shown) to grip the work holder 36 again after the movement Composed.
The plate material reposition position determination device 1 is a device that determines a movement destination in a feed command Rc for moving the work holder 36 to the next holding position of the plate material W after releasing the work holder 36.

  The automatic programming device 20 is composed of a computer and a program (not shown) to be executed by the computer, and the plate cutting means 16 and the execution NC data converting means 19 are constituted by these. The plate removing means 16 is configured so that each of the material plate materials W includes material shape data F1 indicating the shape of the material plate material W and component shape data F2 indicating the shapes of a plurality of component plate materials Wm (see FIG. 8) cut from the material plate material W. This is a means for performing a netique, which is a process for determining the arrangement of the component board M according to the setting rule. The component shape data F2 includes graphic data indicating the outer peripheral shape and graphic data indicating the shape of the hole inside the component plate material Wm. The execution NC data conversion means 19 is a means for generating an executable format machining program 15 from data in which the arrangement of the component plate material Wm is determined with respect to the material plate material W. When the plate material processing machine 30 is a combined processing machine including a punch press or a punch processing head, the tool information storage stores the identification information (tool number and the like) of each punch tool held by the plate material processing machine 30 and the shape of the tool. Tool allocating means 18 for determining which punch tool to use among the punch tools stored in the tool information storage means 17 for machining the outer periphery of the component plate material M and the internal holes of the component plate material M according to a setting rule or an operator's designation. It is supposed to have. The plate cutting means 16 may be performed either before or after the tool assignment by the tool assignment means 18. When the plate material processing machine 30 does not include a punching head, the tool information storage means 17 and the tool assignment means 18 are not provided.

  The plate material reposition position determining device 1 is provided as a part of the execution NC data converting means 19 of the automatic programming device 20, and includes computer hardware and an operation system (not shown) constituting the automatic programming device 20, It is comprised with the board | plate material reposition position determination program executable with this computer. The plate material position determination program is a program shown in flowcharts later in FIGS.

  The plate material position determination apparatus 1 includes the function achievement means shown in FIG. 1B by the computer and the plate material position determination program. The plate material position determination apparatus 1 includes a data input unit 2 and a position position determination unit 4. The data input means 2 is means for executing the data input procedure S1 in the flowchart showing the plate material pressing position determination program of FIG. 2, and the reposition position determination means 4 is means for executing the pressing position determination procedure S2 of FIG. It is.

  The data input means 2 uses the machining information, which is information such as the shape that defines how the plate material W is to be machined by the machining heads M1, M2, M3, and the like. It is a means obtained from the converting means 19 and stored in the machining information storage unit 3a of the machining information storage means 3.

  The information indicating the shape of the component plate material Wm in the processing information is not necessarily information directly indicating the shape, and may be, for example, identification information of a tool used and information on a coordinate position where the tool is used. In that case, the data input means 2 obtains the shape of the tool to be used by collating the identification information of the tool to be used with the tool information storage means 17, and obtains the shape of the machined shape from the shape of the tool to be used and the coordinate position to be used. It is good also as what is produced and memorize | stored in the process information storage part 3a.

In addition to the processing information, the data input means 2 obtains processing machine information and optional setting conditions from a keyboard or other manually operated input device (not shown) or data communication means (not shown), The information is stored in the processing machine information storage unit 3b and the arbitrary setting information storage unit 3c of the processing information storage unit 3, respectively.
The “processing machine information” is information related to the configuration and functions of the plate material processing machine 30. For example, the position and type of each processing head M 1, M 2, M 3, the arrangement interval and size information of the plurality of work holders 36, This is information on the stroke range of the front and rear, left and right of the plate material feeding mechanism 33, information on the position of each pressing member 41 relative to the processing position O, and the like. These “processing machine information” are used as actual numerical values to be substituted into variables in the processing in the position determination means 4. These “machining machine information” do not necessarily have to be input from the data input means 2 and stored in the processing machine information storage unit 3b. For example, the “processing machine information” is set as a constant in the position determination means 4. You can keep it.
The “arbitrary setting condition” is a value that can be arbitrarily input by an operator, a value that can be arbitrarily selected, or the like among values used as a setting condition or the like by the position determination unit 4. The “optional setting condition” input by the data input means 2 is, for example, a description in which the data input means 2 guides the input to a screen of a display device (not shown) such as a liquid crystal display, and a screen showing the input values. Are input from an input device such as a keyboard or a mouse.

  The reposition position determining means 4 has a candidate position specifying unit 5, a necessary condition determining unit 6, an evaluating unit 7, and a reposition position determining unit 8. The candidate position specifying unit 5 includes a grouping unit 9, an in-group processing region calculation unit 10, a common processing region calculation unit 11, a single candidate position specification unit 12, a processing end condition determination unit 13, and a remaining information update unit 14. Have Details of each of the units 4 to 16 will be described later together with the flowcharts of FIGS. 2 to 4 and the explanatory diagrams of FIGS. 5 to 18. First, the basic functions will be described.

  The candidate position designation unit 5 is means for sequentially designating a plurality of candidate positions as the position of reposition according to a setting rule (for example, a rule defined in each of the units 9 to 14) R1. In the designation of each time, when a plurality of times of repositioning are required before the completion of machining, information indicating the position of each time of repositioning is designated as a group of candidate positions. Such a group of candidate positions is sequentially specified a plurality of times. The candidate position designation unit 5 is a means for executing the procedure of step Q2 in FIG. 3, and more specifically, means for executing the procedure shown in the flowchart of FIG.

  The necessary condition determining unit 6 is a unit that determines whether the candidate position specified by the candidate position specifying unit 5 satisfies the setting necessary condition, and is a unit that executes the procedure of Step Q3 in FIG. The necessary setting condition may be determined as appropriate. For example, it is a condition for determining whether the candidate position is a position where the repositioning operation can be performed.

  The evaluation unit 7 is a means for evaluating the candidate position determined to satisfy the necessary condition by the necessary condition determining unit 6 as an evaluation value according to the setting rule R2, and executes the procedures of steps Q4 and Q5 in the flowchart of FIG. Means. The setting rule R2 may be arbitrarily determined. For example, the number of repositions necessary until the end of machining of all the machining sites is used for the calculation of the evaluation value, and the higher the number of repositioning, the higher the evaluation value. . Further, for example, the evaluation value is calculated by using the number of times of repositioning required until the end of machining of all the machining parts and the distance of the repositioning operation, and the lower the number of times of repositioning, the higher the evaluation value. In the same case, the shorter the distance of the repositioning operation, the higher the evaluation value may be. In this case, the distance of the repositioning operation is subject to the sum of the distances at each repositioning, even if the longest repositioning operation distance among these multiple times is evaluated. It is also good. The calculation of the evaluation value according to the setting rule R2 may be performed using appropriate items in addition to the number of times of repositioning and the distance of the repositioning operation.

  The evaluation by the evaluation unit 7 is a process of comparing with the evaluation value stored in the best evaluation value storage unit (not shown). That is, for the first candidate position specified by the candidate position specifying unit 5, since there is no comparison target, the comparison is not performed, and the evaluation value of the candidate position is the initial set value of the best evaluation value storage unit (not shown). However, the subsequent candidate positions are compared with the evaluation value stored in the best evaluation value storage unit (not shown) (Q4), and if the new candidate position has a higher evaluation value, that candidate The position is left as a provisional solution for the reposition position, and the evaluation value stored in the best evaluation value storage unit is updated with the evaluation value of the candidate position (Q5).

  The reposition position determination unit 8 causes the candidate position specification unit 5 to specify the candidate position and the evaluation unit 7 to perform evaluation until the search end condition is reached, and the evaluation unit 7 has the highest evaluation value. This is means for determining and outputting the candidate position as the pressing position. The reposition position determination unit 8 serves as means for executing the procedures of steps Q6 to Q8 in FIG. The search end condition is, for example, a set search count, a set search calculation time, or the like. The position determination unit 8 includes an end condition determination unit 8a and a determination / output unit 8b. The end condition determination unit 8a determines whether or not the search end condition has been reached, and the decision / output unit 16 has the highest candidate value evaluated by the evaluation unit 7 when the search end condition is reached. Is determined as the holding position and output. When the search end condition is not reached, the selection criterion is updated (step Q7), and the procedure returns to the candidate position designation procedure (Q2) by the candidate position designation unit 5. In the selection reference update procedure (step Q7), the criteria for specifying in the candidate position specifying unit 5, for example, the processing region including all the remaining processing parts and the processing possible region of the processing head M are compared. In determining the position of the position, there are a standard such as whether the right end or the left end of the machining area is used as a reference, and a reference for the position distance.

  The outline of the position determination program will be described with reference to FIGS. This reposition position determination program is composed of a data input procedure S1 and a reposition position determination procedure S2. The reposition position determination procedure S2 is composed of each procedure shown in the flowchart of FIG. The data input procedure S1 obtains the input processing described above with respect to the data input means 2 of FIG. This is a procedure for storing in the machining information storage unit 3a. The input of machining information in the data input procedure S1 may be a procedure in which an operator obtains information from any storage means and inputs it. In addition to this, in the data input procedure S1, processing for inputting the above-described processing machine information to the processing machine information storage unit 3b and “optional setting condition” to the arbitrary setting condition storage unit 3c is performed. The “arbitrary setting condition” is a condition entrusted to an input by the operator in the setting condition R1 of the candidate position specifying unit 5, the setting rule R2 of the evaluation unit 7, or the like.

The position determination procedure S2 will be described with reference to FIG.
The position determination procedure S2 is:
Procedure Q1 for setting initial selection criteria;
A candidate position designation procedure Q2 for sequentially designating a plurality of candidate positions of the position according to the setting rule;
A necessary condition determining procedure Q3 for determining whether or not the candidate position specified by the candidate position specifying procedure Q2 satisfies the setting necessary condition;
Evaluation procedures Q3 and Q4 for evaluating the candidate positions determined to satisfy the necessary conditions in the necessary condition determining procedure Q3 as evaluation values according to the setting rules;
The candidate position designation by the candidate position designation procedure Q2 and the evaluation by the evaluation procedures Q4 and Q5 are performed until the search end condition is reached, and the candidate position with the highest evaluation value evaluated by the evaluation procedures Q4 and Q5 is pressed. And output procedures Q6, Q7, and Q8.
In the initial selection reference setting procedure Q1, the conditions for specifying by the candidate position specifying unit 5, for example, as described above, a reference such as whether the right end or the left end of the processing area is the reference, Define conditions such as distance traveled by position movement. In the selection reference update procedure Q7, the conditions set in the initial selection reference setting procedure Q1 are updated, for example, the reference is updated from the right end reference to the left end reference.

  In this embodiment, the candidate position specifying procedure Q2 in FIG. 3 includes steps U1 to U7 in consideration of the grouping performed in the flowchart shown in FIG. That is, the grouping procedure U1, the intra-group machining area calculation procedure U2, the common machining area calculation procedure U3, the single position position candidate designation procedure U4, the machining end condition determination procedure U5, and the group information update procedure U6 This is the procedure U7 for determining candidate positions of the reposition positions for each time until the end of processing.

  The units 9 to 14 constituting the candidate position specifying unit 5 in FIG. 1 are means for executing the procedures U1 to U7 in FIG. In other words, the grouping unit 9 is a means for executing the grouping procedure U1, the intra-group machining area calculation unit 10 is an intra-group machining area calculation procedure U2, the common machining area calculation unit 11 is a common machining area calculation procedure U4, and a single candidate position. The designation unit 12 is a means for executing a single candidate position designation procedure U4, and the remaining information update unit 14 is a means for executing an intra-group information update procedure U6. The processing end determination unit 13 is means for executing a processing end determination procedure U5 and a candidate position determination procedure U7.

  Details of each procedure U1 constituting the candidate position designation procedure Q2 shown in FIG. 4 will be described with reference to FIGS. FIG. 5 shows an outline of the processing, and FIG. In FIG. 5, for the sake of simplicity, the processing parts by the processing heads M (M1 to M3) are simplified and illustrated, and the illustrated contents are different from the specific examples in FIG.

  In the candidate position designation procedure Q2 (FIG. 4), in order to make it possible to determine an appropriate reposition position by processing for one main machining head M1 for machining using a plurality of machining heads M1, M2,. Then, grouping is performed as follows, and processing is performed using the offset of the position of each machining head M1,.

  First, in the grouping procedure U1, the machining information stored in the storage information storage unit 3a in FIG. 1 is grouped for each of the machining heads M1, M2,. In the processing information, processing using a plurality of processing heads M1, M2,... For example, as shown in FIG. 6, there are a processing portion for processing the outer periphery Wma of each component plate material Wm from the material W, and a processing portion for processing inside the component plate material Wm, which is applied to each processing portion. Information on the shape and type of processing (including the types of processing heads M1, M2,... To be used) is included. When processing the same processing site with a plurality of processing heads, for example, after punching with a punch head, taping may be performed on the hole. FIG. 6 is data that is sequentially processed from the right end to the left end side of the material plate W, and is processing information that is processed for each component plate Wm.

In the grouping procedure U1, machining information including information using such various machining heads M is divided into m groups (M1 to Mm) for each machining head M1 to Mm (m is the machining head M). Is a natural number). 5A1 to 5A3 show an outline of grouping. All of the illustrated examples show a case where a main machining head M1, which is a punching head, a sub machining head (laser) M2, and a sub machining head (tap) M3 are used as the machining head M.
FIG. 5 (A1) shows the machining part aM1 of the M1 group using the main machining head M1 with hatching. FIG. 5 (A2) shows the machining site aM2 of the M2 group using the machining head M2 with diagonal lines with reverse inclination. FIG. 5 (A3) shows the machining site aM3 of the M3 group using the machining head M3, with cross hatching. Moreover, in the same figure (A)-(C), the processable area | region (EM1-EM3) which can be processed with each process head M1-M3 is shown by the rectangular area | region.

  In the intra-group machining area calculation procedure U2 (FIG. 4), the intra-group machining area, which is an area for performing all machining in the groups M1, M2,... For each of the groups M1, M2,. (AM1 to AM3) are calculated (FIG. 5 (C1) to (C3)). The intra-group processing areas (AM1 to AM3) are, for example, rectangular areas.

In the common machining area calculation procedure U3, first, a common machining area AMC (FIG. 5 (B1)) that is an area including the in-group machining areas AM1, AM2,... Of all the groups M (M1, M2,...) Is calculated.
The outline of FIGS. 5B1 and 5B2 will be described. The first part (before repositioning) shown in FIG. 5B1 and three component plate materials shown by solid line hatching, and FIG. 5B2. The two component plate materials indicated by the solid line hatching of “second time” (after one reposition) shown in FIG. 4 become component plate materials to be processed at the respective processing positions. The “first” machining position and the component plate material to be machined are determined by following the procedures from (C1) to (C3) and (D1) to (D3) in FIG. Then, regarding the processing of the remaining parts (parts that were not processed at the “first time” position), the “second time” processing position is performed following the same procedure as that for determining the “first time” processing position. And parts to be processed are set.

If it demonstrates with a specific example, FIG. 6 shows the content of the process part a (aM1-aM3) process information processed with all the process heads M1-M3 with respect to the raw material board | plate material W1.
FIG. 7 shows the machining shape of each machining site aM1 to be machined by the main machining head M1, the in-group machining area AM1, and the machinable area EM1 with bold lines.
FIG. 8 shows a machining shape of each machining site aM2 to be machined by the sub machining head (laser) M2, an in-group machining area AM2, and a machinable area EM2. As shown in the figure, the workable area EM2 is offset to the right side of the workable area EM1 of the main machining head M1.
FIG. 9 shows the machining shape of each machining site aM3 to be machined by the sub machining head (tap) M3, the in-group machining area AM3, and the machining area EM3. As shown in the figure, this processable area EM3 is offset to the left side from the processable area EM1 of the main processing head M1.

Here, in the common machining area calculation procedure U3 (FIG. 4), machining by the main machining head M1 is possible so that all machining positions can be determined in the machining area of the main machining head M1 (based on the M1 group). The common machining area AMC (FIG. 12), which is the machining area after the offset of each group M1, M2,..., Is generated in consideration of the offset amounts of all the workable areas with respect to the area EM1. A method for generating the common machining area AMC will be described.
In the M2 group, since the processable area EM2 is offset to the right side with respect to the processable area EM1 of the main processing head M1, the intra-group process area AM2 ′ (FIG. 10) is offset to the left by the same offset amount. It becomes an offset area. Accordingly, an area where the region EM1 that can be processed by the main processing head M1 and the in-group processing region AM2 ′ after the offset overlap at a certain processing position is an area that can be processed by the sub processing head M2.
Similarly, in the M3 group, the workable area EM3 is offset to the left with respect to the workable area EM1 of the main machining head M1, and therefore the in-group work area AM3 ′ (FIG. 11) after the offset is on the left side. The area is offset by the same offset amount.

  There is no change in the in-group processing area AM1 after the offset of the M1 group. Therefore, the area obtained by integrating the in-group machining areas AM1, AM2 ′, AM3 ′ after the offset of these three groups becomes the common machining area AMC (FIG. 12). That is, by examining the inclusion relation with the workable area EM1 of the main machining head M1, the common machining area AMC can be determined for all the machining heads M1, M2,.

  Therefore, in the next position position candidate designation procedure U4 (FIG. 4), the position position candidate position is designated for the common machining area AMC, and the necessary condition satisfaction determination procedure Q3 in FIG. In all the procedures such as the evaluation procedure Q4, the processing region is processed for the common processing region AMC.

In the example of FIG. 12, it is impossible to perform all processing at the loading position (position of FIG. 12), which is the position when the material plate material W is loaded into the plate material processing machine 30, and a plurality of repositions are required. And
Since this example is right carry-out, machining from the right side is standard. Therefore, positioning is performed so that the right side of the common machining area AMC and the right side of the workable area EM1 of the main machining head M1 coincide.

Next, the range that can be processed at this processing position is selected (FIG. 13). In this example, since processing is performed for each part, a processable range is selected in units of the component plate material Wm. The range including each component plate material Wm indicated by the outline in the drawing is a range selected as a workable range.
Next, a range obtained by removing the selected range from the common machining area AMC is determined as a new common machining area AMC1. A region BMC shown in the figure is a processed region left unprocessed. The new common machining area AMC1 is a process in which the component plate material Wm indicated by the broken line in FIG. 13 is left, and when the same process as described above is performed on the remaining process, the thick line is shown in FIG. The region becomes a new common processing region AMC1.

  Here, the relationship between the new common machining area AMC1 and the workable area EM1 of the main machining head M1 is examined. Since it is right unloading, positioning is basically performed at a position where the right side of the common machining area AMC1 and the right side of the workable area EM1 of the main machining head M1 coincide with each other, as in the process of determining the first machining position. Do. However, in this case, the amount of movement of the machining position is smaller when positioning is performed so that the left side of the common machining area AMC1 and the left side of the workable area EM1 of the main machining head M1 coincide. Therefore, it is preferable to perform positioning so that the left side of the remaining common machining area AMC1 and the left side of the workable area EM1 of the main machining head M1 coincide.

  Therefore, as the candidate position designation procedure Q2 of the position of FIG. 3, the candidate position of each position of the position is determined by the procedure of the flowchart of FIG. 4, and the optimization process is performed by the evaluation procedure Q4 of FIG. The unexplained part of FIG. 4 will be described later, and the result of a specific example will be described first.

  As shown in FIG. 15, in this specific example, the positioning of the position is performed so that the left side of the remaining common machining area AMC1 and the left side of the workable area EM1 of the main machining head M1 coincide. Then, a process that can be processed at this processing position is selected. In the example of the figure, the process ends here and returns to the loading position. If unprocessed machining is still left, the same processing is continued again.

  That is, after the common machining area calculation procedure U3 of FIG. 4, in the single-position candidate position specification procedure U4, the candidate position of the position is specified according to an appropriately determined rule. The above-determined rule is, for example, a rule in which a position where the right side of the remaining common machining area AMC1 coincides with the right side of the workable area EM1 of the main machining head M1 is set as a candidate position for repositioning. In the processing end determination procedure U5, processing that can be processed among the remaining processing is selected at the above-described position, and it is determined whether or not processing that cannot be processed remains at that position. If processing that cannot be processed remains, the processing information of each group M1, M2,... Is updated to the remaining processing as a group information update procedure U6. With respect to the machining information updated to the remaining machining, an in-group machining area calculation procedure U2, a common machining area calculation procedure U3, and a candidate position U4 for specifying a position are performed, and the above-described machining end determination procedure U5 is executed. If it is determined that the processing is finished in this processing end determination procedure U5, the candidate positions of the respective repositions from the processing start to the processing end are determined.

  The evaluation position Q4 shown in FIG. 3 is evaluated for each position candidate position determined in this way.

  In the selection reference update procedure Q7 in FIG. 3, for example, in the single position candidate position designation procedure U4 in FIG. 4 in the position candidate position designation procedure Q2, the left side of the remaining common machining area is the main machining. The position that coincides with the right side of the workable area EM1 of the head M1 is updated to a reference such as a candidate position for repositioning.

  After updating the selection criteria in this way, each of the procedures Q3 to Q8 after the designation procedure Q2 of the candidate position for the position of FIG. 3 is executed. As a result, the optimum position position can be determined.

FIG. 16 is a conceptual diagram conceptually showing an example of the relationship between the processing content determined as optimum and the repositioning. Reposition is done 3 times.
In the loading position in FIG. 16A and the first reposition position in FIG. 16B, the range H is an unprocessed range. In the first position of the position shown in FIG. 5B, a rectangular area E is a workable area, and within this workable area E, the range G1 is processed. In the second position of the position shown in FIG. 5C, the processing in the range G2 is performed. A range J in FIGS. 16C and 16D indicates a processed range.

Although the example including the above grouping has been described with a specific example in the case where there are three machining heads M, it will be generalized and rearranged for explanation.
It is assumed that a plurality of processes are allocated on the material plate W and are divided into m groups (M1 to Mm) by the processing head M to be used. In other words, there is a difference in the processable range of each group at a certain position. The offset amount of the Mk group (k = 1 to m) with respect to the Ml group is defined as (Xk, Yk) with the Ml group as a reference. Here, it is assumed that the regions that can be processed by each processing head M are the same. This means that if the machining area of the machining head M1 that performs machining of the Ml group is (Hx_min, Hy_min, Hx_max, Hy_max), the machining area of the machining head Mk that performs machining of the Mk group is (Hx_min + Xk). Hy_min + Yk, Hx_max + Xk, Hy_max + Yk).

  First, machining regions (rkx_min, rky_min, rkx_max, rky_max) in each group are calculated. Next, for these machining areas, a common machining area (Rx_min, Ry_min, Rx_max, Ry_max) projected on the machining area of the Ml group in consideration of the offset amount is calculated. That is, the machining area of the Mk group is projected onto the machining area of the Ml group as (rkx_min-Xk, rky_min-Yk, rkx_max-Xk, rky_max-Yk).

  The reposition position is determined based on a certain standard for the common machining area calculated here. As this selection criterion, there are a right criterion and a left criterion. In the case of the right reference, the position of the position is determined so that the right side of the machining area matches the right side of the common machining area, and the left reference is such that the left side of the machining area matches the left side of the common machining area. This is a method for determining the reposition position. This specific image is shown in FIG.

If the position position is determined in this way, processing that can be performed at this position position is determined. Here, when all the machining assigned to the workpiece is completed, a series of one reposition result is obtained to process the assigned machining. If unprocessed machining still remains, the group information is updated only with the unprocessed machining. Then, the process returns to the processing area calculation within the group again.
These procedures are repeated until all processing is completed.

  The position determined by using this method does not always give a feasible result depending on the actual constraint conditions (extraction order, unloading direction, separation processing, etc.). Therefore, it is possible to obtain an optimum result that can be executed by repeatedly performing this method. The optimization processing procedure is the procedure described above with reference to FIG.

In the above-described embodiment, the case where the direction of the machining area is constant has been described. However, the direction of the machining area, that is, the direction of the overall layout of each machining site is shown in, for example, FIGS. In this way, the position of the position candidate may be specified and the position of the position may be determined by changing the direction by 180 °. Further, the direction of the layout may be reversed as shown in FIGS. 18A to 18C.
That is, the candidate position designating unit 5, the necessary condition determining unit 6 and the evaluation unit 7 in FIG. 1 use the machining information input by the data input means 2 for the overall layout of each machining site remaining after the repositioning operation. Whether to change the direction 180 degrees with respect to the layout, and when the front and back are reversed, and the layout that does not change the direction or reverse It is also good. Whether or not the above 180 ° direction change and reversal of both front and back are performed, and whether or not these redirection and reversal of front and back are not performed, respectively, shall be judged and evaluated for the satisfaction of the setting requirements. good.

  If the direction change or the front / reverse reversal is performed, an appropriate position of the repositioning position may be obtained.

  In the above-described embodiment, the case where the present invention is applied to the determination of the position of the position in the process of creating the machining program 15 has been described. However, the plate material position determination apparatus 1 and the determination program execute the machining program 15 by a numerical controller. You may use for the process which determines a board | plate material pressing position in the process to do.

DESCRIPTION OF SYMBOLS 1 ... Plate material reposition position determination apparatus 2 ... Data input means 3a ... Machining information storage part 4 ... Reposition position determination means 5 ... Candidate position designation part 6 ... Necessary condition determination part 7 ... Evaluation part 8 ... Reposition position determination part 8a ... End condition determination unit 8b ... Output unit 9 ... Grouping unit 10 ... In-group machining region calculation unit 11 ... Common machining region calculation unit 12 ... Single candidate position designation unit 13 ... Processing termination condition determination unit 14 ... Remaining information update Part 15 ... Processing program 20 ... Automatic programming device 30 ... Plate material processing machine 31 ... Table 33 ... Plate material feed mechanism 36 ... Work holder 41 ... Pressing member 42 ... Plate material pressing mechanism AM1, AM2, AM3 ... In-group machining areas AM2 ', AM3 ′… In-group machining area (after offset)
AMC, AMC1 ... common machining areas a, aM1 to aM3 ... machining sites E, EM1 to EM3 ... machining areas M (M1, M2, M3) ... machining heads M1 to M3 ... group R ... reposition command Ra ... feed command Rb ... Pressing command Rc ... Feeding commands R1, R2 ... Setting rule W ... Plate material Wm ... Part plate material

Claims (7)

A plate material repositioning position determining device applied to a plate material processing machine that performs processing of a local processing site on a flat plate material at a plurality of locations,
The plate material processing machine has a table on which a plate material is mounted, a processing head that processes the plate material on the table, and a work holder that grips the plate material, and a plate material that moves the plate material back and forth and right and left relative to the processing head. A feed mechanism, and a plate material pressing mechanism that presses the plate material against the table with a pressing member when performing a repositioning operation to change the gripping position of the plate material by the work holder;
This plate material reposition position determining device
Data input means for storing processing information that is processing information applied to the plate material in processing information storage means;
Reposition position determining means for determining a reposition position that is a change destination position of the gripping position of the work holder when performing the repositioning operation based on the processing information stored in the processing information storage means,
This position determination means
A candidate position designating unit for sequentially designating a plurality of candidate positions as the position of reposition according to the setting rule;
A necessary condition determining unit that determines whether the candidate position specified by the candidate position specifying unit satisfies the setting necessary condition;
For the candidate position determined to satisfy the necessary condition in the necessary condition determining unit, an evaluation unit that evaluates as an evaluation value according to the setting rule,
The candidate position is designated by the candidate position designation unit and evaluated by the evaluation unit until the search end condition is reached, and the candidate position having the highest evaluation value evaluated by the evaluation unit is determined and output as a pressing position. A position determining unit;
Plate material position determination device. The plate material processing machine has a plurality of processing heads that perform processing different from each other apart from each other,
The reposition position determining means includes
When information on processing using different processing heads is mixed as information on individual processing in the processing information input to the data input means, information on individual processing in the processing information is provided for each processing head used for processing. A grouping section for grouping;
An in-group machining area calculation unit for calculating an in-group machining area, which is an area for performing all machining in the group for each group divided into groups,
A common machining area that is an area including the in-group machining area of all the groups is calculated, and this common machining area is processed in the group of other machining heads with respect to the machining area of one main machining head defined as a reference. For the area, it has a common machining area calculation unit which is an area shifted in the opposite direction to the offset direction by the offset amount of the installation position of the main machining head and the machining head of the corresponding group,
The plate material reposition position determining apparatus according to claim 1, wherein the candidate position specifying unit specifies the candidate position with respect to the common processing region.   The candidate position / posture unit, the necessary condition determination unit, and the evaluation unit are 180 ° relative to the arrangement layout in the machining information input by the data input means for the entire arrangement layout of each machining region remaining after the repositioning operation. Including layout layouts that change direction or invert the front and back, and layout layouts that do not change direction or inversion, specify candidate positions for the repositioning position, determine whether the setting requirements are satisfied, and The plate material reposition position determining apparatus according to claim 1 or 2, wherein the evaluation is performed respectively.   The said setting rule of the said evaluation part uses the number of repositions required until the completion | finish of the process of all the process parts for calculation of the said evaluation value, and it is set as a high evaluation value, so that the number of repositions is small. 4. The plate material reposition position determining device according to any one of 3 above.   The repositioning position determined and output by the repositioning position determining unit is a processing program automatic programming device for numerically controlling the plate material processing machine, a command for pressing operation by the plate material pressing mechanism in the processing program, and a work holder The plate material pressing position determination device according to any one of claims 1 to 4, which is a position to be a command position of a feed command that causes the plate material feed mechanism to perform a positioning operation after a command to release gripping. This is an operation that can be executed by a computer and that changes the gripping position of the plate material by the work holder of the plate material processing machine in the control of a plate material processing machine that performs processing of a local processing site on a flat plate material at a plurality of locations. A plate reposition position determination program for determining a reposition position that is a change destination position of a work holder gripping position in a repositioning operation,
A data input procedure for storing processing information, which is processing information applied to the plate material, in a predetermined storage area;
A position determination procedure for determining the position of the position based on the stored processing information,
This position determination procedure is
A candidate position designation procedure for sequentially designating a plurality of candidate positions as the position of reposition according to the setting rule;
A necessary condition determining procedure for determining whether or not the candidate position specified by the candidate position specifying procedure satisfies the setting necessary condition;
An evaluation procedure for evaluating the candidate position determined to satisfy the necessary condition in this necessary condition determining procedure as an evaluation value according to the setting rule,
Determination of candidate position designation by the candidate position designation procedure and evaluation by the evaluation procedure until a search end condition is reached, and determination and output of a candidate position having the highest evaluation value evaluated in the evaluation procedure as a pressing position, and output Including output procedure,
Board material position determination program. The plate material processing machine has a plurality of processing heads that perform processing different from each other apart from each other,
The reposition position determination procedure includes:
When information on processing using different processing heads is mixed as information on individual processing in processing information input to the data input means, information on individual processing in the processing information is provided for each processing head used for processing. A grouping procedure for grouping,
An in-group machining area calculation procedure for calculating an in-group machining area, which is an area where all machining within the group is performed for each group grouped in this grouping procedure,
A common machining area that is an area including the in-group machining area of all the groups is calculated, and this common machining area is processed in the group of other machining heads with respect to the machining area of one main machining head defined as a reference. For the area, it has a common machining area calculation procedure in which the main machining head and the machining head of the corresponding group are shifted in the direction opposite to the offset direction by the offset amount of the installation position,
The plate material position determination program according to claim 6, wherein the candidate position specifying procedure specifies the candidate position for the common processing region.

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