JP2023100284A - Production simulation device and production simulation method, as well as production simulation program - Google Patents

Abstract

To provide a production simulation device and a production simulation method, as well as a production simulation program that can accurately simulate production irrespective of a length of a production period of an estimation target.SOLUTION: A production simulation method that simulates production of a mounting substrate in a component mounting line simulates (ST13-ST15) production of a mounting substrate in the component mounting line on the basis of a relationship (ST11, ST12) between usage count or use time and a mistake rate of a device element possessed by a production device comprised by the component mounting line, and outputs (ST17) a simulation result.SELECTED DRAWING: Figure 5

Description

The present invention relates to a production simulation apparatus, a production simulation method, and a production simulation program for simulating the production of mounted boards in a component mounting line.

As a production simulation method for simulating the production capacity of mounted boards in a component mounting line equipped with production equipment, work in the production equipment is broken down into multiple processes, such as the board transfer process and the component mounting process, and the actual occurrence of each process is performed. A method of estimating production capacity in consideration of the frequency of occurrence of work errors is known. Patent Literature 1 discloses a production simulation apparatus that compares a simulation result using a simulation model with actual production information to calculate an error, and performs simulation by combining simulation models with small errors.

Japanese Patent Application Laid-Open No. 2021-82006

However, in the prior art including Patent Document 1, since the same simulation model is used regardless of the length of the production period to be simulated, there are the following problems. In other words, the actual frequency of occurrence of work errors, etc., fluctuates with the increase in the number of times the equipment elements of the production equipment are used. There was a problem that the accuracy of the production capacity to be used was deteriorated.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a production simulation apparatus, a production simulation method, and a production simulation program capable of accurately simulating production regardless of the length of the production period to be estimated.

A production simulation apparatus of the present invention is a production simulation apparatus for simulating the production of mounted boards in a component mounting line, wherein the relationship between the number of times or usage time of equipment elements of the production apparatus of the component mounting line and the error rate. and a simulation unit for simulating the production of mounting boards in the component mounting line based on the above, and an output unit for outputting the result of the simulation.

A production simulation method of the present invention is a production simulation method for simulating the production of mounted boards in a component mounting line, wherein the relationship between the number of times or usage time of equipment elements possessed by the production equipment provided in the component mounting line and the error rate. Based on the above, the production of mounted boards in the component mounting line is simulated, and the result of the simulation is output.

A production simulation program according to the present invention is a production simulation program for causing a computer to simulate the production of mounted boards in a component mounting line, wherein the number of times of use or the time of use and the error of equipment elements possessed by the production equipment of the component mounting line are calculated. a simulation step of simulating the production of mounted boards in the component mounting line based on the relationship with the ratio; and an output step of outputting the simulation result.

According to the present invention, it is possible to accurately simulate production regardless of the length of the production period to be estimated.

1 is an explanatory diagram of the configuration of a component mounting system according to an embodiment of the present invention; FIG. 1 is a block diagram showing the configuration of an information processing system of a management computer (production simulation device) according to an embodiment of the present invention; FIG. Flow chart of the error rate calculation method according to one embodiment of the present invention (a) Explanatory drawing showing an example of the occurrence frequency of individual error rates (b) Explanatory drawing showing an example of the relationship between the error rate and the number of times of use created by the management computer (production simulation device) according to one embodiment of the present invention 1 is a flowchart of a production simulation method according to one embodiment of the present invention; (a) Explanatory diagram showing an example of the relationship between the unit production time and the printed circuit board estimated by the (production simulation device) of one embodiment of the present invention (b) An example of the relationship between the cumulative production number and the production time illustration showing

An embodiment of the present invention will be described in detail below with reference to the drawings. The configuration, shape, etc. described below are examples for explanation, and can be changed as appropriate according to the specifications of the component mounting system, management computer, component mounting line, printer, component mounting device, and the like. In the following, the same reference numerals are given to the corresponding elements in all the drawings, and redundant explanations are omitted.

First, the configuration of a component mounting system 1 will be described with reference to FIG. The component mounting system has a configuration in which production apparatuses constituting a component mounting line L are connected by a communication network 2 and managed by a management computer 3 . The component mounting line L includes a substrate feeding device M1, a printing device M2, a print inspection device M3, component mounting devices M4 to M8, and a mounting inspection device M9 from upstream (left side of the paper surface) to downstream (right side of the paper surface) in the substrate conveying direction. , a reflow device M10, and a substrate recovery device M11 are connected in series. The component mounting line L has a function of producing a mounting board in which components are mounted on the board. Note that the component mounting line L is a group of production apparatuses connected via the communication network 2, and the production apparatuses do not have to be physically connected to each other.

In FIG. 1, the substrate supply device M1 includes a storage unit such as a rack for storing a plurality of substrates, and performs a substrate supply operation of supplying the substrates taken out from the storage unit to downstream devices. The printing apparatus M2 is a production apparatus that performs a solder printing operation for printing paste-like solder onto a board brought in from the upstream side through a screen mask attached to the printing operation section.

The printing apparatus M2 brings the substrate into contact with a screen mask having a plurality of openings, moves the squeegee in contact with the screen mask, and pushes the solder supplied onto the screen mask into the openings, thereby applying solder to the substrate. Print solder. In the printer M2, when the solder stored in the printer M2 is consumed and runs out (when the solder runs out) while the solder printing work is repeated, the operator replenishes the solder.

The print inspection apparatus M3 is a production apparatus that performs a print inspection work for inspecting the state of solder printed on a substrate by a print inspection work unit including a solder inspection camera and various sensors. The monitoring results, such as the surface state of the solder-deposited board inspected by the print inspection device M3, are sent to the management computer 3. FIG.

In FIG. 1, the component mounting apparatuses M4 to M8 perform component mounting work of picking up components supplied by a component supply device such as a tape feeder or tray feeder with a nozzle attached to a mounting head, and mounting them on a board on which solder is printed. It is the production equipment that executes. A tape feeder is a component supply device that supplies components by feeding a carrier tape that holds components. A tray feeder is a component supply device that supplies components while exchanging trays that hold a plurality of components. The component mounting apparatuses M4 to M8 are equipped with a component recognition camera that images the components held by the nozzles, a sensor that measures the flow rate of air flowing into the nozzles, a head camera that images the components supplied by the component supply device, and the like.

The component mounters M4 to M8 use cameras and various sensors during the component mounting operation to detect mounting errors by the mounting head, pickup errors in which the nozzle does not pick up the components normally, and whether the components are normally supplied by the component supply device. Monitor supply errors, etc. A monitoring result is sent to the management computer 3 .

In FIG. 1, in the component mounting apparatuses M4 to M8, when the components held by the component supply unit are consumed while the component mounting operation is repeatedly continued, and the remaining number falls below a predetermined number (a component shortage warning occurs), or when the component When the supply runs out (when parts run out), the operator performs parts replenishment work (carrier tape replenishment, tray replacement, etc.).

In addition, if a device error such as an error where the nozzle does not pick up the component normally, or an error where the tape feeder stops supplying components due to carrier tape tangling (jamming) occurs, the operator can Recovery work from the equipment error is executed. In this way, the tape feeder, tray feeder, mounting head, and nozzles for performing component mounting work are device elements possessed by the component mounting apparatuses M4 to M8 (production apparatuses).

The component mounting line L is not limited to having five component mounting apparatuses M4 to M8, and may have one to four component mounting apparatuses M4 to M8 or six or more. The mounting inspection apparatus M9 is a production apparatus that performs a mounting inspection work for inspecting the state of components mounted on a board by a mounting inspection working section including a mounting inspection camera. A monitoring result such as a mounting error where a component is not mounted at a predetermined position on the substrate inspected by the mounting inspection device M9 is transmitted to the management computer 3. FIG.

The reflow apparatus M10 heats a substrate loaded into the apparatus by a substrate heating unit to harden the solder on the substrate, and performs a substrate heating operation of bonding the electrode portion of the substrate and the component. The substrate recovery device M11 includes a storage unit such as a rack for storing a plurality of substrates, and performs a substrate recovery operation of receiving substrates carried out by an upstream device and recovering them in the storage unit.

In FIG. 1, the management computer 3 has a function of creating data and parameters necessary for the operation of the production equipment provided in the component mounting line L and transmitting them to each production equipment. In addition, the management computer 3 has a function of collecting monitoring results and production status of production equipment from a plurality of production equipment provided in the component mounting line L, calculating the error rate of the production equipment and equipment elements, and simulating the production of mounted boards. have. The component mounting line L provided in the component mounting system 1 does not need to be one, and may be two or more.

Next, the configuration of the information processing system of the management computer 3 will be described with reference to FIG. Here, after a plurality of functions provided in the management computer 3, production results such as monitoring results and production status of the production equipment (printing equipment M2, print inspection equipment M3, component mounting equipment M4 to M8, mounting inspection equipment M9) can be obtained. are collected, the error rate of the device element is calculated, and the configuration as a production simulation device for simulating the production of mounting boards will be described.

The management computer 3 includes an input section 12, a display section 13, and a communication section 14 in addition to a processing section 10 and a storage section 11 which is a storage device. The processing unit 10 is a data processing device such as a CPU, and includes a result collection unit 15, a miss rate calculation unit 16, a simulation unit 17, a change unit 18, and an output unit 19 as internal processing units. Note that the management computer 3 does not need to be composed of one computer, and may be composed of a plurality of devices. For example, all or part of the storage unit and processing unit may be provided in the cloud via a server.

In FIG. 2, the input unit 12 is an input device such as a keyboard, touch panel, mouse, etc., and is used for inputting operation commands and data. The display unit 13 is a display device such as a liquid crystal panel, and displays various data stored in the storage unit 11 as well as various information such as an operation screen and an input screen for operation by the input unit 12 . The communication unit 14 is a communication interface, and communicates with the production devices (printing device M2, print inspection device M3, component mounting devices M4 to M8, mounting inspection device M9, etc.) constituting the component mounting line L via the communication network 2. send and receive data between

The storage unit 11 stores production plan information 11a, actual production information 11b, device element information 11c, error rate information 11d, unit production work information 11e, event information 11f, simulation results 11g, and the like. The production plan information 11a includes information on the mounting boards (board types) scheduled to be produced on the component mounting line L, the number of boards to be produced, the configuration of the production equipment, the information specifying the equipment elements of the production equipment, and the usage position information. there is The mounting board information includes the types of components to be mounted on the board, mounting positions (XY coordinates), and the like. The information specifying the device elements includes the types of components supplied by the tape feeders and tray feeders mounted on the component mounting devices M4 to M8.

In FIG. 2, the performance data collection unit 15 periodically collects production performance data from the production devices (the printing device M2, the component mounting devices M4 to M8, etc.) of the component mounting line L. FIG. The production results include the date and time when production started, the date and time when production ended (the time when the production equipment produced the mounting board), the number of production units, the number of times the equipment elements (tape feeder, tray feeder, mounting head, nozzle, etc.) of the production equipment were used or It includes information such as usage time, number of work errors, error rate (frequency), number of operation errors and their details.

The performance collection unit 15 stores the collected information in the storage unit 11 as the production performance information 11b in association with the information specifying the production device or the device element. The device element information 11c includes, for each device element used in the component mounting line L, information specifying the device element, the number of times and hours of use since the latest maintenance, the position of use of the device element (production device and mounting position, storage location, etc.) is stored. The performance collection unit 15 updates the usage count and usage time of the device element based on the collected production performance of the device element. The error rate calculator 16 calculates the relationship between the number of times or hours of use of the device element and the error rate based on the production record information 11b and the device element information 11c of the component mounting line L. FIG.

Here, an example of a method of calculating the relationship between the number of uses or usage time of an apparatus element and the error rate by the error rate calculator 16 will be described along the flow of FIG. 3 and with reference to FIG. Here, a method of calculating the relationship between the number of times the device element is used and the error rate will be described, taking as an example a tape feeder that is attached to the component mounting apparatuses M4 to M8 and used as the device element. The calculation method is the same for device elements other than the tape feeder and for the relationship between the device element and the usage time, and detailed description thereof will be omitted.

In FIG. 3, first, the error rate calculation unit 16 calculates the number of times of use for each section of the same type of tape feeder (device element) based on the actual production information 11b and the device element information 11c. section), the individual error rate of operation errors (suction error, jamming, etc.) occurring in each of the plurality of tape feeders is calculated (ST1: individual error rate calculation step). In the example shown in FIG. 4A, the individual miss rate of the adsorption error of the tape feeder is calculated for each 100 times of use.

Specifically, the error rate calculation unit 16 calculates the individual error rate from the number of times a pickup error has occurred between 1 and 100 times that the tape feeder has supplied components since the latest maintenance. Similarly, the error rate calculation unit 16 calculates the number of uses of 100 times for each tape feeder, such as the individual error rate for the section from 101 times to 200 times and the individual error rate for the section from 201 times to 300 times. Calculate the individual miss rate for each segment.

In FIG. 3, the error rate calculation unit 16 then calculates the occurrence frequency (probability distribution) of the individual error rate for each section of the number of times of use (or time of use) based on the individual error rates calculated for the plurality of tape feeders. (ST2: probability distribution creation step). That is, the error rate calculation unit 16 calculates the occurrence frequency of the number of tape feeders having the same or approximately the same individual error rate in the section from 1 to 100 times of use. The same applies to the section from 101 times to 200 times and the section from 201 times to 300 times.

In FIG. 3, the error rate calculator 16 then determines the representative value of the individual error rate of each section (ST3: section error rate determination step). In this example, the mode of the individual error rate (P(100), P(200), P(300), . . . ) is used as the representative value of the occurrence frequency (FIG. 4(a)). Note that the representative value is not limited to the mode value, and may be the median value or the average value of the individual error rate in that section. That is, the error rate calculator 16 adopts one of the average value, the median value, and the mode value of the plurality of calculated individual error rates as the error rate for the section of the device element of the type.

FIG. 4B is a graph showing the representative value (mode) of the individual error rate for each section calculated by the error rate calculation unit 16 as a relationship between the error rate and the number of times of use. Specifically, the error rate calculation unit 16 sets the number of times of use in the interval from 1 time to 100 times to 100 times, and sets the mode value (P(100)) of the individual error rate in that interval as the error rate. plot. In this example, the tape feeder miss rate is statistically processed as a separate set for each part supplied, and the miss rates of the parts D1 and D2 are plotted for every 500 times of use. That is, even if the tape feeders are of the same type, if the parts to be supplied are different, the miss rate is calculated as a different set.

In FIG. 3, the error rate calculation unit 16 stores the relationship between the calculated number of times of use (or usage time) and the error rate in the storage unit 11 as the error rate information 11d (ST4: error rate storage step). That is, the storage unit 11 stores the error rate corresponding to the number of times of use or the time of use of the device element. In the above description, the number of times of use is divided into intervals of 100 times, but the intervals are not limited to 100 times. For example, it may be every 50 times or every 200 times. In the case of usage time, for example, the usage time is divided into sections of 100 seconds, and the relationship with the error rate is calculated.

In FIG. 2, the unit production work information 11e includes production work (hereinafter referred to as "unit production work") for each mounting operation (mounting step) executed by a production apparatus or an apparatus element provided in the production apparatus in the production work of a mounted board. ), the unit production work time, etc., which is the standard time, is stored for each work content. For example, the unit production work of the printing device M2 includes an operation of transporting the substrate, an operation of moving the squeegee to print solder on the substrate, and the like. The unit production work of the tape feeder includes the tape feeding of the carrier tape by the tape feeder to supply one component. Further, the unit production work of the nozzle includes the operation of the nozzle picking up the component from the component supply device, the operation of mounting the component on the mounting position of the substrate, and the like.

The event information 11f contains details of work to be handled, standard work time, and recovery time for each event such as work mistakes (errors), replenishment work, and equipment errors that occur in the production equipment and equipment elements provided in the production equipment during production work. event response time and the like are stored. For example, when the printer M2 runs out of solder, the standard work time for replenishment work by the operator is stored. In the case of a pick-up error in which the nozzle does not pick up the component normally, the standard work time for the work for the nozzle to pick up the component again from the component supply device is stored. In the case of a tape feeder supply stop error due to jamming, the standard work time for restoration work by the operator is stored.

In FIG. 2, the simulation unit 17 simulates one mounted board produced in the component mounting line L based on the production plan information 11a, the device element information 11c, the error rate information 11d, the unit production work information 11e, and the event information 11f. A production simulation for estimating the production of mounting boards such as the production time per unit (unit production time) and the number of production is executed. Based on the error rate information 11d, the changing unit 18 changes the error rate used in the simulation of the device element each time the device element is used in the production simulation. A result of the production simulation is stored in the storage unit 11 as a simulation result 11g.

The output unit 19 outputs the simulation result to the display unit 13, another computer, or the like. The output simulation result may be the time required to produce the set production number, or may be CPH (Chip Per Hour) as the production capacity of the component mounting apparatuses M4 to M8 or the component mounting line L, for example. , the correlation between the number of times of use or the time of use and the error rate.

Next, a production simulation method (production simulation program) for simulating the production of mounted boards on the component mounting line L will be described along the flow of FIG.

In FIG. 5, first, the relationship between the number of times or hours of use and the error rate of the device element of the production device of the component mounting line L is calculated (ST11: error rate calculation step). In the error rate calculation step (ST11), even if the error rate is calculated based on the latest production performance information 11b of the component mounting line L by the error rate calculation method shown in FIG. 11d).

The simulation unit 17 simulates the production work by the production equipment of the component mounting line L and calculates the production time for each board. Specifically, the simulation unit 17 calculates the unit production work time for each unit production work in the production apparatus, and integrates the calculated unit production work times to calculate the production time for one mounting board. Furthermore, the simulation unit 17 predicts whether or not an event such as an error will occur for each unit production work based on the event occurrence probability. Calculate production time by adding time.

In FIG. 5, in calculating the production time, first, the changing unit 18 calculates the number of times of use at that time or The miss rate is changed based on time (ST12: miss rate changing step). That is, the error rate used in the simulation is changed for each production device or each device element. The changed miss rate is stored in the storage unit 11 as the simulation result 11g.

For example, if the tape feeder that supplies the component D1 mounted on the component mounting apparatus M4 has been used 1051 times after the latest maintenance, the changing unit 18 determines to change the miss rate for that tape feeder. At that time, if there is no miss rate corresponding to 1051 times in the miss rate information 11d, the changing unit 18 does not change the miss rate of the tape feeder stored in the simulation result 11g.

That is, the error rate of the tape feeder is not changed from the error rate in the section from 901 to 1000 times stored in the error rate information 11d assuming that the number of times of use is 1000 times. In this way, if there is no error rate corresponding to the first number of uses (here, 1051 times) (or the first usage time) of the device element, the change unit 18 changes the error rate used in the production simulation to The error rate (here, the error rate in the section from 901 to 1000 times) corresponding to the first number of times of use (or the first time of use) is not changed. In this way, the changing unit 18 refers to the storage unit 11 and changes the error rate used in the production simulation to the error rate corresponding to the number of uses or the usage time of the device element.

In FIG. 5, the simulation unit 17 then calculates the unit production work time of the unit production work of the production device or the device elements provided in the production device based on the unit production work information 11e (ST13: unit production work time calculation step). . At that time, the simulation unit 17 predicts whether or not an event will occur based on the error rate of the production device or device element changed in the error rate changing step (ST12). When predicting that an event will occur, the simulation unit 17 adds the event handling time corresponding to the event predicted to occur to the working time. The calculated unit production work time and event response time are stored in the simulation result 11g.

For example, if the simulation unit 17 predicts that a pick-up error event in which the component D1 cannot be picked up occurs in a unit production work in which the nozzle picks up the component D1 from the tape feeder attached to the component mounting apparatus M4, the simulation result 11g is: , in addition to the unit production work time of the unit production work in which the nozzle picks up the component from the component supply device, the event response time of the work in which the nozzle picks up the component D1 again from the tape feeder is stored.

In FIG. 5, the simulation section 17 then determines whether or not there is any remaining unit production work for that board (ST14). If unit production work remains (No in ST14), return to the error rate changing step (ST12), change the error rate based on the number of uses (or use time), and change the error rate based on the changed error rate. A production work time calculation step (ST13) is executed. When the unit production work for the board is completed (Yes in ST14), the simulation section 17 adds the unit production work time stored in the simulation result 11g and the event response time to calculate the production time for the board, and calculates the simulation result. Store in 11g.

Next, if the production simulation for the mounting board to be produced has not been completed (No in ST16), the process returns to the step of changing the miss rate (ST12) and the next board is simulated. When the production simulation of the mounting board to be produced is completed (Yes in ST16), the output section 19 causes the display section 13 or the like to display (output) the simulation result (ST17: output step). As described above, the production simulation method of the present embodiment is based on the relationship between the number of times or hours of use of the equipment elements of the production equipment of the component mounting line L and the error rate (ST11, ST12). The production of mounting boards in L is simulated (ST13 to ST15), and the simulation result is output (ST17).

Next, with reference to FIG. 6, an example of the result of production simulation will be described. FIG. 6(a) shows the relationship between the unit production time required to produce one mounted board and the produced board. FIG. 6B shows the relationship between the cumulative production number of mounting boards and the production time. The solid lines shown in the graphs of FIGS. 6A and 6B show the results of the production simulation of this embodiment in which the error rate is changed according to the number of times or hours of use of the device element. Also, the dotted line shown in the graph indicates the result of conventional production simulation calculated using a miss rate that does not depend on the number of times or hours of use of the device element.

In the conventional production simulation, the unit production time is constant regardless of the substrates to be produced, and the cumulative production number increases monotonically in proportion to the production time. On the other hand, in the production simulation of the present embodiment, the occurrence of an event is estimated using the relationship between the number of times of use or the time of use of a device element based on the actual production information 11b and the error rate (see FIG. 4(b)). . Therefore, the unit production time increases or decreases according to events that are expected to occur during production of the mounting board.

As the production period (the number of sheets produced) increases and the number of times or hours of use of the production equipment and equipment elements increases, deterioration due to distortion and fatigue of the production equipment and equipment elements increases, and the error rate increases. In conventional production simulations, production is estimated with a constant error rate, so long-term forecasts may result in underestimated production hours, while short-term forecasts may lead to overestimated production hours. On the other hand, in the production simulation of the present embodiment, the change in the error rate is predicted (modeled) based on the actual production results, so the production time can be estimated with high accuracy according to the actual increase or decrease in the error rate. As a result, production can be accurately simulated regardless of the length of the production period (number of products produced) to be estimated.

As described above, the management computer 3 of the present embodiment uses the number of times or hours of use and the error rate of the device elements (tape feeders) of the production devices (the component mounting devices M4 to M8) of the component mounting line L. A simulation unit 17 for simulating the production of mounted boards on the component mounting line L based on the relationship of the above, and an output unit 19 for outputting the simulation result, and simulating the production of the mounted boards on the component mounting line L. It is a simulation device. As a result, production can be accurately simulated regardless of the length of the production period (number of products produced) to be estimated.

INDUSTRIAL APPLICABILITY The production simulation apparatus, production simulation method, and production simulation program of the present invention have the effect of being able to accurately simulate production regardless of the length of the production period to be estimated. Useful.

3 Management computer (production simulation device)
L Component mounting line M2 Printing equipment (production equipment)
M4~M8 Component mounting equipment (production equipment)

Claims (8)

A production simulation device for simulating the production of mounting boards in a component mounting line,
a simulation unit that simulates the production of mounted boards in the component mounting line based on the relationship between the number of times or usage time of equipment elements of the production equipment of the component mounting line and the error rate;
and an output unit that outputs the result of the simulation. Furthermore, comprising a changing unit that changes the miss rate used in the simulation,
2. The production simulation apparatus according to claim 1, wherein said changing unit changes said miss rate each time said device element is used in said simulation. The changing unit changes the error rate used in the simulation to the first number of times of use or the first time of use when there is no error rate corresponding to the first number of times of use or the first time of use of the device element. 3. The production simulation apparatus according to claim 2, which does not change from the corresponding miss rate. Further comprising a storage unit that stores the miss rate corresponding to the number of times of use or the time of use of the device element,
4. The production according to claim 2, wherein said changing unit refers to said storage unit and changes the error rate used in said simulation to said error rate corresponding to said number of times of use or said time of use of said device element. simulation equipment. 5. The method according to any one of claims 1 to 4, further comprising a miss rate calculation unit that calculates a relationship between the number of times of use or the time of use of the device element and the miss rate based on actual production information of the component mounting line. 1. The production simulation device according to claim 1. The error rate calculation unit
calculating an individual error rate of errors occurring in each of the plurality of device elements for each section of the number of times of use or each section of the usage time for the plurality of device elements of the same type;
6. The production simulation apparatus according to claim 5, wherein one of an average value, a median value, and a mode value of the plurality of calculated individual error rates is adopted as the error rate for the section of the device element of the type. A production simulation method for simulating the production of mounted boards in a component mounting line,
simulating the production of mounted boards in the component mounting line based on the relationship between the number of times or usage time of equipment elements of the production equipment of the component mounting line and the error rate;
A production simulation method for outputting the simulation results. A production simulation program for causing a computer to simulate the production of mounted boards in a component mounting line,
a simulation step of simulating the production of mounted boards in the component mounting line based on the relationship between the number of times or usage time of equipment elements of the production equipment of the component mounting line and the error rate;
and an output step of outputting the simulation result.

Images