JP2017112135A - Calculation device, calculation method, and calculation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a calculation device, a calculation method, and a calculation program, combining component type groups in consideration of a preparation time for loading a component on a loading part.SOLUTION: A mounting device includes a plurality of loading parts for loading one or more component type groups to be mounted on each of a plurality of mounting targets on the basis of each component type group, in which the group component types corresponding to the plurality of mounting targets mutually differ at least in a part, and the number of component types which can be loaded on each loading part is limited. In the mounting device, the calculation device includes a calculation unit which calculates the combination of the component type groups to be loaded on each loading part, on the basis of the preparation time to load each component type on the loading part, if the total number of component types of the component type group to be loaded on the plurality of mounting targets exceeds the limit.SELECTED DRAWING: Figure 5

Description

  This case relates to a calculation device, a calculation method, and a calculation program.

  In a production line, components such as electronic components are mounted on a plurality of types of mounting targets. The component type group to be mounted is different for each type. Therefore, in a mounting apparatus for mounting components, a plurality of types of component type groups are mounted on a mounting portion for mounting components such as a carriage. However, since there is a limit to the number of component types that can be mounted on each mounting unit, a component type group mounted on each mounting unit is combined (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-177281

  However, Patent Document 1 does not consider the preparation time required for mounting components on each mounting portion.

  An object of the present invention is to provide a calculation device, a calculation method, and a calculation program for combining component type groups in consideration of preparation time for mounting a component on a mounting portion.

  In one aspect, the calculation apparatus includes a plurality of mounting units that mount one or more component type groups mounted on each of a plurality of mounting targets in units of the component type groups, and the group component types corresponding to the plurality of mounting targets. In a mounting apparatus in which at least some of the components are different from each other and the number of component types that can be mounted on each mounting unit is limited, the total number of component types of the component type groups mounted on the plurality of mounting targets In the case of exceeding, a calculation unit is provided for calculating a combination of component type groups to be mounted on each mounting unit based on a preparation time for mounting each of the component types on the mounting unit.

  The component type groups can be combined in consideration of the preparation time for mounting the component on the mounting portion.

1 is a schematic view of a surface mounting line according to Example 1. FIG. It is a figure showing the combination of the electronic component mounted in figure number A-figure number D. FIG. (A) And (b) is a figure which illustrates the combination of component types. (A) illustrates the component type mounted on each figure number, (b) illustrates the grouping result, and (c) illustrates the optimum grouping result. It is a functional block diagram of a calculation apparatus. (A) illustrates a table stored in the component information storage unit, (b) is a diagram illustrating a table of component preparation time for each component type. It is an example of the flowchart showing the group calculation process which a calculation apparatus performs. (A)-(d) is a figure which illustrates about the detail of calculation of the reduction time T. FIG. (A)-(c) is a figure which illustrates the calculated group. It is an example of the flowchart showing the group calculation process which a calculation apparatus performs. (A)-(c) is a figure which illustrates the calculated group. It is an example of the flowchart showing the group calculation process which a calculation apparatus performs. (A)-(c) is a figure which illustrates the calculated group. It is an example of the flowchart showing the group calculation process which a calculation apparatus performs. It is a block diagram for demonstrating an example of the hardware constitutions of a calculation apparatus. It is a figure which illustrates a manufacturing system. It is a figure which illustrates the manufacturing system which moves a program in a cloud.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a schematic diagram of a surface mounting line 200 according to the first embodiment. As illustrated in FIG. 1, the surface mounting line 200 includes a substrate loader 10, a solder printing machine 20, a printing inspection machine 30, a mounter device 40, a mounting inspection machine 50, a reflow furnace 60, an appearance inspection machine 70, an unloader 80, and the like. Prepare. Each device is connected in this order by a conveyor 90.

  The board loader 10 supplies the printed circuit board to be mounted to the conveyor 90. The printed circuit board is conveyed to the solder printer 20 by the conveyor 90. The solder printer 20 prints solder at a predetermined location on the printed circuit board. Next, the conveyor 90 conveys the printed circuit board on which the solder is printed to the printing inspection machine 30. The print inspection machine 30 inspects the solder on the printed circuit board. The printed circuit board that has passed the inspection by the printing inspection machine 30 is conveyed to the mounter device 40 by the conveyor 90.

  The mounter device 40 mounts components such as electronic components on the printed solder on the printed circuit board. Next, the conveyor 90 conveys the printed circuit board on which the components are surface-mounted to the mounting inspection machine 50. The mounting inspection machine 50 inspects whether there is a defect in mounting of components on the printed circuit board. The printed circuit board that has passed the inspection by the mounting inspection machine 50 is conveyed to the reflow furnace 60 by the conveyor 90. The reflow furnace 60 performs reflow on the printed circuit board. Thereby, the component is fixed to the printed circuit board.

  Next, the conveyor 90 conveys the printed circuit board on which the components are fixed to the appearance inspection machine 70. The appearance inspection machine 70 inspects whether there is a defect in the appearance of the printed circuit board. The printed circuit board that has passed the inspection by the appearance inspection machine 70 is conveyed to the unloader 80 by the conveyor 90. The unloader 80 takes out the printed circuit board from the conveyor. The printed circuit board is completed through the above steps. A plurality of mounter devices may be provided. In the present embodiment, for the sake of simplicity of explanation, a surface mounting line in which one mounter device is arranged will be described.

  Next, details of the mounter device 40 will be described. The surface mounting line 200 does not manufacture printed circuit boards of the same type, but manufactures multiple types of printed circuit boards. Therefore, the component type group mounted by the mounter device 40 differs depending on the type of the printed circuit board.

  FIG. 2 illustrates component types A to D representing the component type group mounted on each printed circuit board. As illustrated in FIG. 2, the part type group of the drawing number A includes a part a, a part b, a part c, a part d, and a part e. The part type group of figure number B includes part e, part f, part g, and part h. The part number group of figure number C includes part i, part j, part k, part 1, part m, and part n. The part type group of drawing number D includes part n, part o, part p, and part q.

  The mounter device 40 has facility restrictions (1) to (5). (1) As illustrated in FIG. 2, components to be mounted on a printed circuit board are prepared (mounted) on a carriage 41 for mounting the components in a state such as a reel 42, and the carriage 41 is installed in the mounter device 40. This makes it possible to mount electronic components on the printed circuit board. A plurality of identical parts are mounted on the reel 42. Thereby, the reel 42 can supply components to each of the plurality of printed circuit boards. (2) When replacing the component type (reel 42) to be mounted by the mounter device 40, replacement is performed in units of carts. (3) In the component type group unit, all the reels 42 of the component type group are arranged in one cart (the cart cannot be exchanged during mounting of the figure number). (4) There is a limit to the number of component types (the number of reels 42) that can be arranged in one carriage. (5) Since the component type (reel 42) is mounted on the carriage 41, it takes a part preparation time corresponding to the component type.

  Based on the facility restriction (4), in the surface mounting line 200 for manufacturing a plurality of types of printed circuit boards, it is not possible to mount all the component type groups of the figure numbers on one carriage. Therefore, a plurality of carriages 41 are mounted. In addition, the time for mounting components on the printed circuit board (mounting time) is short, and the component preparation time for the carriage has a great influence on the manufacturing time. In the case of small volume production, the influence of the part preparation time on the manufacturing time becomes particularly large. Moreover, since replacement | exchange of the component type mounted in the mounter apparatus 40 is performed for every trolley | bogie, there is a component type arrange | positioned in a trolley | bogie several times. From the above, the manufacturing time varies depending on the combination of drawing numbers mounted on each carriage.

  Based on the said equipment restrictions (3) and (4), mounting | wearing with the components aq to the several trolley | bogie 41 is examined. As illustrated in FIG. 3A, the parts a, b, c, d, e and the parts n, o, p, q are mounted on the first carriage 41 of the mounter device 40. The parts e and parts f, g, and h are mounted on the second carriage 41. The parts i, j, k, l, m, and n are mounted on the third carriage 41. In this case, the first cart 41 can mount the component type groups of the drawing numbers A and D. With the second carriage 41, the component type group of the drawing number B can be mounted. With the third carriage 41, the component type group of the drawing number C can be mounted. Therefore, the said equipment restrictions (3) and (4) can be satisfy | filled. However, since the number of carts increases, it takes time to prepare the carts themselves.

  On the other hand, as illustrated in FIG. 3B, parts a, b, c, d, e, f, g, h are mounted on the first carriage 41 of the mounter device 40, and the second carriage is installed. 41, parts i, j, k, l, m, n, o, p, q are mounted. In this case, the first cart 41 can mount the component type groups of the drawing number A and the drawing number B. With the second carriage 41, it is possible to mount the component type groups of the drawing numbers C and D. Moreover, the number of carriages can be reduced as compared with the case of FIG. However, if the combination is determined based on the experience and intuition of the field worker, the combination may be as shown in FIG. 3A. Therefore, it is preferable that a method for determining the combination is established.

  As an example, based on the part type group of a certain figure number (the figure number with the most mounted parts types), the part type group of the figure number and the part type group of the figure number with the smallest difference in the number of part types It is conceivable to determine a combination of component type groups by repeating the grouping. FIG. 4A illustrates the component type groups of the drawing numbers A to C. In the example of FIG. 4A, the number of parts (capacity) that can be mounted on one carriage is twelve. On the other hand, the total number of component types in the component type group of the drawing numbers A to C is 15. Therefore, since all the component types of the drawing numbers A to C cannot be prepared for one carriage, two carriages are required. In FIG. 4A, the part preparation time for mounting each part type on the carriage 41 of the mounter device 40 is also illustrated.

  When grouping the part type group of the figure number and the part type group of the figure number having the smallest difference in the number of part types on the basis of the figure number A having the largest part type, the result of FIG. Is obtained. That is, the component type group of the drawing number A and the drawing number B is mounted on the first carriage, and the component type group of the drawing number C is mounted on the second carriage. However, in this case, the total number of parts preparation times for each carriage is 14 + 10 = 24. On the other hand, as illustrated in FIG. 4C, the optimum number of the total number of parts preparation times for each carriage is 15 + 7 = 22.

  Therefore, in this embodiment, when the figure number representing the part type group and the figure number are combined, the total part preparation time before and after the combination is calculated, and the part type group and the part type group are calculated based on the value. Determine the combination. At the time of the determination, the above-mentioned facility restrictions should be satisfied.

  As illustrated in FIG. 5, in the present embodiment, the calculation device 100 is provided in the surface mounting line 200. The calculation apparatus 100 includes a component information storage unit 11, a constraint information storage unit 12, an input information interpretation unit 13, an evaluation unit 14, a group configuration unit 15, an output unit 16, a group information storage unit 17, and the like.

  The component information storage unit 11 stores component information. For example, the part information storage unit 11 stores the part type included in the part type group of each figure number as part information. FIG. 6A illustrates a table stored in the component information storage unit 11. The constraint information storage unit 12 stores constraint information of the mounter device 40. For example, the constraint information storage unit 12 stores the number of component types that can be mounted on each carriage 41, the component preparation time for each component type, and the like as constraint information. FIG. 6B illustrates a part preparation time table for each part type.

  FIG. 7 is an example of a flowchart showing group calculation processing executed by the calculation apparatus 100. As illustrated in FIG. 7, the input information interpretation unit 13 reads the component information stored in the component information storage unit 11 and the constraint information stored in the constraint information storage unit 12, and evaluates the evaluation unit 14 and the group configuration unit. 15 (step S1).

  Next, for each pair of component type groups, the evaluation unit 14 calculates a reduction time T of the component preparation time when the pairs are combined into one component type group (step S2). The reduction time T is (total number of part preparation times of one part type group of the pair) + (total number of part preparation times of the other part type group of the pair) − (part preparation when the pairs are combined into one part type group) Total number of hours).

  FIG. 8A to FIG. 8D are diagrams illustrating the details of the calculation of the reduction time T. As illustrated in FIG. 8A, first, the evaluation unit 14 treats the part type group of each figure number as one group. Next, the evaluation unit 14 calculates the reduction time T for all pairs of two component type groups. For example, when parts a and b are common to the part type group of figure number A and the part type group of figure number B, the total preparation time of parts a and b is calculated as the reduction time T. .

  Next, the group configuration unit 15 confirms whether or not the constraint information is satisfied for each pair, and groups pairs that have the maximum reduction time T among the pairs that satisfy the constraint information, and handles them as one component type group. (Step S3). In the example of FIG. 8A, the reduction time T is maximized for the pair of part type groups of the figure number A and the figure number B. Therefore, as illustrated in FIG. 8B, the part type group of the figure number A And the part type group of the drawing number B is handled as one part type group. Next, the group structure part 15 determines whether a pair cannot be created (step S4). Specifically, when the two component type groups are paired, the group configuration unit 15 exceeds the number of component types that can be mounted on the carriage 41 of the mounter device 40, or the reduction time T cannot be obtained ( The total number of parts preparation time will not be shortened).

  When it is determined as “Yes” in step S4, the group configuration unit 15 passes information on each component type group to the output unit 16 (step S5). The output unit 16 stores the information on each component type group passed from the group configuration unit 15 in the group information storage unit 17 (step S6). Information on each component type group stored in the group information storage unit 17 is displayed on a display device or the like. Thereby, the user can grasp | ascertain the component kind prepared for each trolley | bogie 41. FIG.

  If “No” is determined in step S4, the process is executed again from step S1. In the example of FIG. 8B, the component type group of the drawing number A and the component type group of the drawing number B are regarded as one component type group, and the reduction time T is set for all the pairs of the two component type groups. Is calculated. In the example of FIG. 8C, since the reduction time T is maximized for the pair of the part type group of the figure number D and the part type group of the figure number E, the part type group of the figure number D and the figure number E are next. Are paired as a single component type group. Furthermore, since the reduction time T is maximized for the pair of the part type group consisting of the part type group of the figure number D and the part type group of the figure number E and the part type group of the figure number C, in FIG. As illustrated, the component type groups of the drawing numbers C to E are handled as one component type group.

  FIG. 9A to FIG. 9C are diagrams illustrating the component type groups calculated by the evaluation unit 14 and the group configuration unit 15. FIG. 9A is a diagram illustrating the component type groups of the drawing numbers A to C. FIG. 9A is the same as FIG. 4A. The number of component types that can be prepared for one carriage 41 is 12 as in FIG. FIG. 9B is a diagram illustrating the reduction time T for each pair. As illustrated in FIG. 9B, the reduction time T (= 6) when the part type group of the figure number A and the part type group of the figure number C are paired becomes the maximum. Therefore, a pair of the part type group of the drawing number A and the part type group of the drawing number C is treated as one part type group. It should be noted that the number of component types when the component type group of drawing number A and the component type group of drawing number C are paired is twelve. Therefore, the pair of the part type group of the drawing number A and the part type group of the drawing number C satisfies the constraint information.

  Next, if the part type group of the figure number B is combined with the pair of the part type group of the figure number A and the part type group of the figure number C, the number of parts types exceeds 12, so that the calculation process is performed. finish. Therefore, as illustrated in FIG. 9C, the part type group of the drawing number A and the part type group of the drawing number C are output as one part type group, and the part type group of the drawing number B is one part type. Output as a group. As illustrated in FIG. 9C, the total part preparation time of the first carriage 41 (the figure number A and the figure number C) and the second carriage 41 (the figure number B) is 15 + 7 = 22. It is the total number of parts preparation time.

  According to the present embodiment, each of the component types is mounted on the cart 41 when the total number of component types of the component type groups mounted on the plurality of printed circuit boards exceeds the number of components that can be mounted on the cart 41. Based on the preparation time to do this, a combination of component type groups mounted on each carriage 41 is calculated. In this case, it is possible to combine the component type groups in consideration of the preparation time for mounting the components on each carriage 41. The combined component type group is regarded as one component type group, and the component type group is further combined, so that the combination can be optimized. Further, since the component type groups are combined according to the reduction time T, the preparation time can be reduced. As a result, the manufacturing time of the printed circuit board is shortened. Further, since the pair with the maximum reduction time T is regarded as one component type group, the reduction of the preparation time is optimized.

(Modification 1)
Instead of the time T for reducing the part preparation time when a pair of two part type groups is combined into one part type group, another index may be used. In the first modification, instead of the reduction time T, the reduction time T / (total number of part preparation times T _pair when two pairs of parts type groups are combined into one part type group) is used instead of the reduction time T. it may be used as an index _{S 1.}

FIG. 10 is an example of a flowchart showing the group calculation process executed by the calculation apparatus 100. Flowchart differs from the Fig 7 calculates an index S ₁ instead of reducing the time T in step S2 (step S12), the index S ₁ in step S3 to group pairs with the maximum (Step S13) in terms is there. Other processes are the same as those in the flowchart of FIG.

FIG. 11A to FIG. 11C are diagrams illustrating groups calculated by the evaluation unit 14 and the group configuration unit 15. FIG. 11A is a diagram exemplifying the component type groups of the drawing numbers A to C. FIG. 11A is the same as FIG. The number of component types that can be prepared for one carriage 41 is 12 as in FIG. FIG. 11B shows a reduction time T when each part type group is paired, a total part preparation time T _pair when a pair of two part type groups is combined into one part type group, and an index S ₁ . It is a figure illustrated. As illustrated in FIG. 11 (b), the index S ₁ is maximized in the case of a component type group of the component species groups and drawing number C of figure numbers A pair. Therefore, a pair of the part type group of the drawing number A and the part type group of the drawing number C is treated as one part type group. The number of common component types is 12 when the component type group of drawing number A and the component type group of drawing number C are paired. Therefore, the pair of the part type group of the drawing number A and the part type group of the drawing number C satisfies the constraint information.

  Next, if the part type group of the figure number B is combined with the pair of the part type group of the figure number A and the part type group of the figure number C, the number of parts types exceeds 12, so that the calculation process is performed. finish. Therefore, as illustrated in FIG. 11C, the part type group of the figure number A and the part type group of the figure number C are output as one part type group, and the part type group of the figure number B is one part type. Output as a group. As illustrated in FIG. 11C, the total part preparation time of the first carriage 41 (the figure number A and the figure number C) and the second carriage 41 (the figure number B) is 15 + 7 = 22. Parts preparation time has been reached.

(Modification 2)
In the second modification example, instead of the reduction time T, the reduction time T / (the total amount U _pair of carriages used when a pair of two part type groups is combined into one part type group) is used instead of the reduction time T. it may be used as an index _{S 2.} The cart usage is the ratio of reels that occupy each cart 41. The total number of used trucks U _pair is the total number of used trucks in each truck 41.

FIG. 12 is an example of a flowchart showing the group calculation process executed by the calculation apparatus 100. Flowchart differs from the Fig 7 is reduced by calculating an index S ₂ in place of the time T in step S2 (step S22), and the index S ₂ in Step S3 to group pairs with the maximum (Step S23) in terms is there. Other processes are the same as those in the flowchart of FIG.

FIG. 13A to FIG. 13C are diagrams illustrating the component type groups calculated by the evaluation unit 14 and the group configuration unit 15. FIG. 13A is a diagram exemplifying the component type groups of the drawing numbers A to C. In FIG. 13 (a), the amount of carriage used is added as compared to FIG. 4 (a). The number of types of parts that can be prepared for one carriage 41 is 12 as in FIG. 13 (b) is a diagram reduction time T when summarizing the pair of two component type groups into one component type group, truck usage total U _pair, and the index S ₂ illustrated. As illustrated in FIG. 13 (b), the index S ₂ is maximized in the case of a component type group of the component species groups and drawing number C of figure numbers A pair. Therefore, a pair of the part type group of the drawing number A and the part type group of the drawing number C is treated as one part type group. The number of common component types is 12 when the component type group of drawing number A and the component type group of drawing number C are paired. Therefore, the pair of the part type group of the drawing number A and the part type group of the drawing number C satisfies the constraint information.

  Next, if the part type group of the figure number B is combined with the pair of the part type group of the figure number A and the part type group of the figure number C, the number of parts types exceeds 12, so that the calculation process is performed. finish. Therefore, as illustrated in FIG. 13C, the part type group of the drawing number A and the part type group of the drawing number C are output as one part type group, and the part type group of the drawing number B is one part type. Output as a group. As illustrated in FIG. 13C, the total part preparation time of the first carriage 41 (the figure number A and the figure number C) and the second carriage 41 (the figure number B) is 15 + 7 = 22. Parts preparation time has been reached.

(Modification 3)
Component type groups obtained according to Example 1 using a reduction time T, component type groups obtained according to Modification Example 1 using an index S _1, and component type obtained according to Modification 2 with reference to the index S ₂ Of the groups, the component type group having the shortest total component preparation time may be stored. FIG. 14 is an example of a flowchart showing the group calculation process executed by the calculation apparatus 100 in this case. The group configuration unit 15 selects the combination of the component type groups having the shortest total component preparation time among the combinations of the component type groups output in step S5 of FIGS. 7, 10, and 12 (step S31). Next, the group configuration unit 15 stores information on the part type group selected in step S31 in the group information storage unit 17 (step S32).

  In each of the above examples, the printed circuit board is an example of a mounting target. The carriage 41 is an example of a mounting unit that mounts a component type group mounted on each of a plurality of mounting targets in units of the component type group. The mounter device 40 includes a mounting unit, and group component types corresponding to a plurality of mounting targets are at least partially different from each other, and is an example of a mounting device in which the number of component types that can be mounted on the mounting unit is limited. Preparation for mounting each of the component types on the mounting unit when the total number of component types of the component type group mounted on the plurality of mounting targets exceeds the limit of the mounting unit. It is an example of the calculation part which calculates the combination of the component type group mounted in a mounting part based on time.

(Other examples)
FIG. 15 is a block diagram for explaining an example of the hardware configuration of the calculation apparatus 100. As illustrated in FIG. 15, the calculation device 100 includes a CPU 101, a RAM 102, a storage device 103, an input device 104, a display device 105, and the like. Each of these devices is connected by a bus or the like. A CPU (Central Processing Unit) 101 is a central processing unit. The CPU 101 includes one or more cores. A RAM (Random Access Memory) 102 is a volatile memory that temporarily stores programs executed by the CPU 101, data processed by the CPU 101, and the like. The storage device 103 is a nonvolatile storage device. As the storage device 103, for example, a ROM (Read Only Memory), a solid state drive (SSD) such as a flash memory, a hard disk driven by a hard disk drive, or the like can be used. The input device 104 is an input device such as a keyboard, a mouse, or a touch panel. The display device 105 is a display device having a screen such as an LCD. When the CPU 101 executes a program stored in the storage device 103, each unit of the calculation device 100 is realized.

  FIG. 16 is a diagram illustrating a manufacturing system. As illustrated in FIG. 16, the manufacturing system has a configuration in which a terminal 201 including an input device 104 and a display device 105 is connected to a server 203 including a CPU 101, a RAM 102, and a storage device 103 through an electric communication line 202 such as an intranet. Have In the example of FIG. 16, each unit of the calculation device 100 is realized in the server 203. For example, component information such as the component type mounted on the printed circuit board of each figure number and constraint information of the mounter device 40 are input from the input device 104 of the terminal 201 and calculated by the group configuration unit 15 of the server 203. Group information may be displayed on the display device 105 of the terminal 201.

  FIG. 17 is a diagram illustrating a manufacturing system that moves programs in the cloud. As illustrated in FIG. 17, a manufacturing system that moves programs in the cloud includes a terminal 201 including an input device 104 and a display device 105, a cloud 204 including a CPU 101, a RAM 102, and a storage device 103, and an electric communication line 202 such as the Internet. Connected to each other. In the example of FIG. 17, each unit of the calculation device 100 is realized in the cloud 204. For example, component information such as the component type mounted on the printed circuit board of each figure number and constraint information of the mounter device 40 are input from the input device 104 of the terminal 201 and calculated by the group configuration unit 15 of the cloud 204. Group information may be displayed on the display device 105 of the terminal 201.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims. It can be changed.

DESCRIPTION OF SYMBOLS 11 Component information storage part 12 Constraint information storage part 13 Input information interpretation part 14 Evaluation part 15 Group component part 16 Output part 17 Group information storage part 100 Calculation apparatus 200 Surface mounting line

Claims (7)

A plurality of mounting parts for mounting one or more component type groups mounted on each of the plurality of mounting targets in units of the corresponding component type group are provided, and at least some of the group component types corresponding to the plurality of mounting targets are different from each other. In mounting devices where the number of parts that can be mounted on each mounting part is limited,
In the case where the total number of component types of the component type groups mounted on the plurality of mounting targets exceeds the limit, each mounting unit is based on a preparation time for mounting each of the component types on the mounting unit. A calculation device comprising a calculation unit for calculating a combination of mounted component type groups.   The calculation unit regards the calculated combination of component type groups as one component type group, and further calculates a combination of component type groups to be mounted on the mounting unit based on the preparation time. Item 1. The calculation device according to item 1.   The calculation device according to claim 2, wherein the calculation unit repeats calculation of the combination of the component type groups within a range in which the number of component types in the combination of the component type groups does not exceed the limit.   The said calculating part calculates the combination of the component type group mounted in the said mounting part according to the sum total of the said preparation time of the said component type common when the said component type group is combined. The calculation apparatus as described in any one of 1-3.   5. The calculation according to claim 4, wherein the calculation unit calculates a combination of the component type groups that maximizes a total of the preparation times of the component types that are common when the component type groups are combined. apparatus. A plurality of mounting parts for mounting one or more component type groups mounted on each of the plurality of mounting targets in units of the corresponding component type group are provided, and at least some of the group component types corresponding to the plurality of mounting targets are different from each other. In mounting devices where the number of parts that can be mounted on each mounting part is limited,
In the case where the total number of component types of the component type groups mounted on the plurality of mounting targets exceeds the limit, the mounting unit is configured based on a preparation time for mounting each of the component types on the mounting unit. A calculation method, wherein the calculation unit calculates a combination of component type groups to be mounted. A plurality of mounting parts for mounting one or more component type groups mounted on each of the plurality of mounting targets in units of the corresponding component type group are provided, and at least some of the group component types corresponding to the plurality of mounting targets are different from each other. In mounting devices where the number of parts that can be mounted on each mounting part is limited,
On the computer,
In the case where the total number of component types of the component type groups mounted on the plurality of mounting targets exceeds the limit, the mounting unit is configured based on a preparation time for mounting each of the component types on the mounting unit. A calculation program for executing a process of calculating a combination of component type groups to be mounted.

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