JP6902462B2 - Work improvement support system - Google Patents

Description

The present invention relates to a work improvement support system and method.

At the production site, a technique for extracting and analyzing a problematic process by comparing the target time of work with the actual time actually required is known (Patent Document 1). Patent Document 1 discloses a system that analyzes a problem process by comparing the planned time estimated by the estimation system with the actual work time measured from the work moving image.

Japanese Unexamined Patent Publication No. 2002-312017

In Patent Document 1, since the target time is calculated by another system and manually input by the operator, the estimated man-hours are large and the workability is low. Further, in Patent Document 1, since the operator manually inputs the actual work time into the analysis system by measuring the captured work moving image, the input man-hours are large and the workability is low. In particular, in the case of high-mix low-volume production products (customized products), it is difficult to analyze because the work efficiency by manual input is too low.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an easy-to-use work improvement support system and method.

In order to solve the above problems, the work improvement support system according to the present invention is a work improvement support system that supports work improvement, and has a target time calculation unit that calculates a target time for each work process and a work record for each work process. It is equipped with a work actual time calculation unit that calculates the time and a work analysis unit that compares and analyzes the target time and the actual work time, and the target time calculation unit is the number of elemental works included in at least one work process. And the element work basic time defined as the element work basic time, the target time for each work process is calculated.

According to the present invention, since the target time of the work process can be calculated from the number of elemental works included in the work process and the basic elemental work time, the time required for setting the target time can be shortened, which is convenient. Is improved.

It is explanatory drawing which shows the whole outline of the work improvement support system which concerns on this embodiment. This is an example of a computer system that realizes a work improvement support system. It is a flowchart which shows the whole flow of a work improvement support system. It is explanatory drawing of the system structure of the work improvement support system. It is explanatory drawing which shows the relationship between the calculation method of the target time and the work actual time, and a work instruction screen. It is a flowchart of the process of setting a target time. It is a flowchart of the process of automatically updating the element work time basic unit. This is an example of the analysis result screen. This is an example of a screen that graphs the difference between the target time and the actual work time. This is a screen example that graphs the difference between the actual work time and the champion time. It is a flowchart which shows the process of setting the target time according to the skill coefficient which a worker has in relation to the 2nd Example. This is an example of a table that manages skill coefficients. It is a flowchart which shows the process of updating the champion time according to the 3rd Example. It is a flowchart which shows the process which reflects the machine time of a production facility in a target time according to 4th Example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the work improvement support system according to the present embodiment, the preliminary data used for the analysis of the work process can be efficiently prepared, and the usability of the analysis work is improved.

In the case of high-mix low-volume products (so-called customized products), the work process is different, so it takes time and effort to set the target time and the actual work time for each product, and it is not practical.

On the other hand, in the present embodiment, the target time of the work process can be calculated from the number of elemental works included in the work process and the basic elemental work time. The time required for setting can be shortened. Further, in the present embodiment, since the actual work time is calculated according to the reaction of the worker to the work instruction screen provided to the worker for each work process, the actual work time can be efficiently input.

In the present embodiment, in setting the target time, a database is created of the past work actual time and the work time (hereinafter, work time basic unit) for each part obtained from the design part information (number of parts).

When setting the target time of the target product for work improvement, the target time is calculated from the work time basic unit in the database and the design part information of the target product. As for the actual work time of the target product, the actual work time in one work unit is acquired from the work instruction system 11. In the present embodiment, the production work (assembly work) of the target product is analyzed by comparing the target time and the actual work time in one work unit.

The first embodiment will be described with reference to FIGS. 1 to 10. As described in detail below, in this embodiment, for example, in the assembly work as the production work, the neck work is extracted by comparing the target time and the actual work time in one work unit. In this embodiment, the user can call up the work instruction screen and the work video for the extracted neck work, so that the work can be analyzed in a short time even in the case of a high-mix low-volume product. ..

FIG. 1 is an explanatory diagram showing an overall outline of the work improvement support system 1. The work improvement support system 1 includes a work instruction system 11 and a work analysis system 12.

The work improvement support system 1 provides the work instruction screen 300 to the worker who performs the assembly work at the work site 2, and collects and analyzes the work result of the worker. The work instruction screen 300 can also be called a work instruction viewer.

The work improvement support system 1 can be configured by using, for example, at least one computer. An example of a computer system that realizes the work improvement support system 1 will be described later with reference to FIG.

The work site 2 will be described first. The work site 2 includes at least one cell 21. The cell 21 is a so-called stand-type work table. In the cell 21, the worker W produces the product 25 according to the work procedure shown on the work instruction screen 300 displayed on the work instruction terminal 23. The work site 2 may be provided with a machine M as a production facility.

Here, the cell production method (stall method) will be described as an example, but the present invention is not limited to this, and may be applied to, for example, a line method or a dynamic cell method. Further, the work site 2 of this embodiment is suitable for so-called high-mix low-volume production, but can also be applied to low-mix low-volume production and low-mix low-volume production.

At least one camera 24 for monitoring the work status of the worker W is installed in the cell 21. The camera 24 may monitor not only the working status of the worker but also the surrounding status of the cell 21.

An RFID reader 22 that reads information from an RFID (Radio Frequency IDentifier) tag 26 is provided in the cell 21 or in the vicinity of the cell 21. The RFID tag 26 can be divided into, for example, a work tag 26-1 held by the worker W and a product tag 26-2 provided on the product 25.

The work tag 26-1 can be further divided into a worker tag that stores the identification information of the worker W and a work guidance form tag that indicates the cell (placement destination process) where the worker W is placed (in any case). Not shown). The RFID reader 22 reads out the identification information that identifies the worker W and the identification information that identifies the cell (process) from the work tag 26-1. The work improvement support system 1 can grasp which worker W is arranged in which cell 21 based on the information read by the RFID reader 22. Further, the work improvement support system 1 can grasp the current position of the product 25, the manufacturing history, and the like by acquiring the information about the product 25 from the product tag 26-2.

The work instruction terminal 23 displays a work instruction screen 300 that teaches the operator the work procedure in the cell 21. On the work instruction screen 300, for example, a three-dimensional model 311 of the product 25 to be assembled and parts, and related information including precautions and tools to be used are displayed.

The worker W reads the RFID tag 26-1 by the RFID reader 22 before starting the work, so that the work instruction screen 300 is displayed on the work instruction terminal 23. The worker W sees the work instruction screen 300, confirms the contents of the work process, and works as instructed.

Here, the work process, that is, one work includes at least one element work. Element work is a unit element that divides one work. For example, the act of bending a certain part in the "bending work" is an elemental work of the bending work. When bending a plurality of parts in the "bending work", each of these actions is an elemental work.

When the operator finishes one work, he / she operates a completion button indicating the completion of the work or a next button requesting the display of the next work (both not shown) on the work instruction screen 300. When the work improvement support system 1 detects the completion of one work, the work improvement support system 1 calculates and saves the time required for the work (actual work time). The work improvement support system 1 can grasp the progress status of the work in each cell 21 in real time by monitoring the operation on the work instruction terminal 23 (work instruction screen 300).

The worker W can also have the worker terminal 27. The worker terminal 27 is, for example, a mobile phone (including a so-called smartphone) or a mobile information terminal provided by the company. By using the worker terminal 27, the start and end of the work may be automatically or manually input to the work improvement support system 1.

The configuration of the work improvement support system 1 will be described. As described above, the work improvement support system 1 includes a work instruction system 11 and a work analysis system 12. The work instruction system 11 will be described first.

The work instruction system 11 generates a work instruction screen 300 to be provided to the worker W in each cell 21. The work instruction system 11 includes, for example, a 3D CAD data storage unit 111, an assembly order registration unit 112, a work instruction generation unit 113, and a work instruction display unit 114.

The 3D CAD data storage unit 111 stores the 3D design data (3D CAD data) output by the 3D CAD system 1003 (see FIG. 2).

The assembly order registration unit 112 registers the assembly order information used for the work instruction regarding the assembly of the product 25 which is the object. The assembly order information is information on the assembly order (work procedure) automatically or manually generated from the 3D CAD data.

The work instruction generation unit 113 generates the work instruction screen 300 by using the assembly order information registered in the assembly order registration unit 112.

The work instruction display unit 114 causes the work instruction terminal 23 to display the work instruction screen 300 by transmitting the data of the work instruction screen 300 generated by the work instruction generation unit 113 to the work instruction terminal 23.

It is not necessary that all of the above-mentioned functions 111 to 114 are provided in the work improvement support system 1. For example, the 3D CAD data storage unit 111 and the like may be provided outside the work improvement support system 1.

The work analysis system 12 will be described. The work analysis system 12 monitors and analyzes the work results of each worker W in each cell 21. The work analysis system 12 includes, for example, a work status monitoring unit 121, a work performance management unit 122, a worker management unit 123, and a work analysis unit 124.

The work analysis system 12 has, for example, a database 125 that manages the number of element work for each part, a database 126 that manages the element work time basic unit as the "element work basic time", and an image taken by the camera 24. It is provided with a database 127 that manages the above.

In this embodiment, for the target time automatically calculated from 3D CAD data (design product information), the time corresponding to the element in each process based on the actual data (actual work time) is recalculated and reflected in the target time. .. The actual work time is reflected in the target time by converting it to a unique unit called the element work time basic unit, not just the difference between the target time and the actual work time.

Here, the element is, for example, in the case of a "bending process", the number of times of bending, the time of preparing a mold for bending, the time of actually performing bending, and the like. The parameters (element work time basic unit) are modified for each of these subdivided elements. In this embodiment, instead of reviewing the required time (element work time basic unit) for each part unit (element work unit), the averaging process is performed based on the difference between the target time and the actual work time in the entire process. By doing so, the element work time basic unit is increased or decreased.

The work analysis system 12 has a user interface device 128 for a user such as a work analyst to exchange information with the work analysis system 12. The user interface device 128 can be divided into an information input device and an information output device. The information input device and the information output device may be integrated. Information input devices include, for example, pointing devices such as keyboards, touch panels, voice input devices, and mice. Information output devices include, for example, displays, printers, and voice synthesizers.

It is not necessary that all the entities of these functions 121 to 127 are provided in the work improvement support system 1. For example, the work status monitoring unit 121, the work performance management unit 122, and the worker management unit 123 are provided outside the work improvement support system 1, and only necessary information is transmitted from these external functions 121 to 123 to the work analysis unit 124. You may.

The work status monitoring unit 121 monitors the progress of the work in each cell 21 based on the identification information read by the RFID reader 22 from the RFID tag 26 and the operation by the worker W on the work instruction terminal 23, and performs the work. It is transmitted to the performance management unit 122.

The work record management unit 122 manages the work record for each cell (work process) based on the data from the work status monitoring unit 121.

The worker management unit 123 is required for, for example, the worker number, name, working style, working years, working hours, history of the work process in charge (number of defective products, etc.) of each worker W, and each cell 21. Manage the presence or absence of skills to be performed. Information managed by the worker management unit 123 is written in the work tag 26-1.

The work analysis unit 124 analyzes the work status in each cell 21 based on the work record data of each cell 21 managed by the work record management unit 122. The work analysis unit 124 includes a target time calculation unit 1241 that calculates the target time for each work process of each cell 21, a work actual time calculation unit 1242 that calculates the work actual time for each work process of each cell 21, and an analysis result. It is provided with a providing unit 1243.

In FIG. 1, it is shown as if the target time calculation unit 1241 and the work actual time calculation unit 1242 are provided inside the work analysis unit 124, but the target time calculation unit 1241 and the work actual time calculation unit 1242 are It can also be provided separately from the work analysis unit 124.

The work analysis unit 124 analyzes whether a bottleneck work has occurred in the work in each cell 21 by comparing the actual value (work actual time) and the target value (target time) of each work.

A user such as a production control manager in charge of improving a work process can devise a measure for improving work efficiency based on the analysis result of the work analysis unit 124. The devised measures can be reflected on the work instruction screen 300 after verification.

The analysis result providing unit 1243 analyzes the work process, generates a screen (described later in FIG. 8 and the like) for displaying the result, and provides the screen to the user via the user interface device 128.

FIG. 2 is an example of a computer system that realizes the work improvement support system 1. The computer system 1000 is configured by, for example, connecting a work instruction system server 1001, a work analysis system server 1002, a 3D CAD system 1003, a database server 1004, and a user management server 1005 via a communication network CN1. .. Further, the work instruction system server 1001 and the work analysis system server 1002 are also connected to the work instruction terminal 23 of each cell 21 via the communication network CN2.

The work instruction system server 1001 is a computer that realizes the work instruction system 11. The work instruction system server 1001 has computer resources such as a microprocessor (abbreviated as CPU) 10011, a memory 10012, a storage device 10013, a user interface device 10014, and a communication unit 10015.

When the microprocessor 10011 reads the computer program stored in the storage device 10013 into the memory 10012 and executes it, the function as the work instruction system 11 is realized.

The work analysis system server 1002 is a computer that realizes the work analysis system 12. The work analysis system server 1002 also has computer resources (none of which are shown) such as a microprocessor and a memory. The function as the work analysis system 12 is realized by the microprocessor executing a computer program (not shown).

In FIG. 2, the work instruction system server 1001 and the work analysis system server 1002 are shown as if they are configured as separate physical computers. Instead, the servers 1001 and 1002 are configured as virtual computers, and one is configured. It may be provided on a physical computer.

The 3D CAD system 1003 is a computer that generates and outputs three-dimensional design data of the product 25 and each component constituting the product 25. The database server 1004 stores work record data, video data, and the like from the work site 2. The user management server 1005 manages users (for example, a system administrator, an analyst, a work instruction creator, a designer, etc.) who use the work improvement support system 1.

FIG. 3 is a flowchart showing the overall flow of the work improvement support system 1. The work flow S10 is shown on the left side of FIG. 3, and the processing flow of the work improvement support system 1 is shown from the central portion to the right side of FIG.

The work flow S10 will be described first. When the worker W inputs the support for starting the work to the work instruction terminal 23 (S11), the work instruction system 11 transmits the work instruction screen 300 of the product corresponding to the worker W to the work instruction terminal 23, and the terminal Display on the screen (S12).

The worker W opens the work instruction screen 300 of the product to be worked (S13), and performs the instructed work while referring to the page for each work process for each part (S14). One work includes at least one element work.

When the worker W finishes one work process, the worker W closes the page and proceeds to the next page (S15). When the worker W operates the button for advancing to the next page on the screen 300, the closing of the page is input to the work improvement support system 1.

When the worker W finishes all the work steps to be performed in the cell 21 (S16: YES), the work instruction screen 300 ends (S17), and the information indicating the work completion is sent to the work improvement support system 1 through the work instruction terminal 23. Is input to (S18). When the step S18 is completed, the work improvement support system 1 ends this process.

When the unprocessed work step remains (S16: NO), the process returns to step S13, and steps S14 to S16 are executed again.

The overall processing S20 of the work improvement support system 1 will be described. A user U (see FIG. 5) such as a work analyst or a production plan manager searches for a product to be improved by inputting keywords and the like into the work improvement support system 1 using the user interface device 128. (S21).

The work improvement support system 1 detects a bottleneck work in the production of a product subject to work improvement (S22). Details of step S22 will be described later. Hereinafter, the bottleneck work may be referred to as a neck work.

When the analysis of the neck work is completed in step S22, the work improvement support system 1 extracts the target work instruction screen 300 and displays it on the screen of the user interface device 128 (S23).

Further, the work improvement support system 1 can also extract the work video corresponding to the target work instruction screen 300 from the work video database 127 and display it on the screen of the user interface device 128 (S24).

Here, the work instruction screen 300 to be displayed in step S23 is not limited to the screen corresponding to the neck work, and may be the work instruction screen 300 corresponding to the work before and after the neck work. Similarly, the work image to be displayed in step S24 is not limited to the work image of the neck work, but may be the image of the work before and after that.

The work improvement support system 1 analyzes the neck work (S25) and devises a measure for eliminating the neck work (S26). The work improvement support system 1 determines whether or not the countermeasure planning for the neck work is completed, that is, whether or not the work improvement is completed (S27). If the work improvement has not been completed (S27: NO), the process returns to step S22. When the work improvement is completed (S27: YES), this process is terminated.

Here, the countermeasure planning in step S26 may be manually set by the user U based on experience or the like, or may be automatically or semi-automatically set by using a database or the like that stores the countermeasure results. ..

The neck work analysis in step S22 will be described. The work improvement support system 1 calculates a target time for each work (for each work process; the same applies hereinafter) (S221). Details of the target time setting method will be described later with reference to FIGS. 5 and 6.

Subsequently, the work improvement support system 1 calculates the actual work time for each work (S222). The actual work time can be calculated from the opening and closing of the work instruction screen 300 (S13, S15).

Work flow As described in S10, when starting one work, the worker W executes an operation of opening an instruction page corresponding to the work on the work instruction screen 300 (S13). The operation of opening the page by the worker W is input to the work improvement support system 1. The work improvement support system 1 stores the time when the page opening operation is performed as the work start time. Then, when one work is completed, the worker W executes an operation of closing the page on the work instruction screen 300 (S15). The operation of closing the page by the worker W is input to the work improvement support system 1. The work improvement support system 1 stores the time when the page closing operation is performed as the work end time. Therefore, the actual work time can be calculated as the difference between the work end time and the work start time (S222).

The work improvement support system 1 compares the target time set in step S221 with the actual work time calculated in step S222 for each work, and calculates the deviation between the target time and the actual work time (S223). The larger the deviation, the more the target time and the actual work time deviate from each other, and it can be considered that the work is a bottleneck work.

The work improvement support system 1 extracts neck work (S225) by rearranging the deviations for each work calculated in step S223 in descending order (S224). For example, among the operations sorted in descending order of deviation, a predetermined number of operations at the top can be extracted as neck operations. Alternatively, for example, among the operations rearranged in step S224, the operations whose deviation is equal to or greater than a predetermined threshold value may be extracted as neck operations.

FIG. 4 is a system configuration diagram showing how to support work improvement. The work improvement support system 1 has a database 123 that manages the number of elemental works for each part, a database 126 that manages the element work time basic unit, and a work instruction screen information 1131 that manages data of the work instruction screen 300 as design information. And have.

The work improvement support system 1 calculates a target time for each work based on the element work number database 123 and the element work time basic unit database 126.

The work improvement support system 1 creates a work instruction screen 300 based on the work instruction screen information 1131 and provides the work instruction screen 300 to the work instruction terminal 23. The worker W works with reference to the work instruction screen 300. The state of the worker W during work is photographed by the camera 24 and stored in the work video database 127.

As described above, the information of the RFID tag 26 is read by the RFID reader 22 and sent to the work improvement support system 1. The time information obtained from the RFID tag 26 is stored as the RFID input actual time 1211. The work improvement support system 1 calculates and stores the work actual time 1221 based on the RFID input actual time 1211 and the operation on the work instruction screen 300.

FIG. 5 is an explanatory diagram showing the relationship between the calculation method of the target time and the actual work time and the work instruction screen.

The designer designs the product using the 3D CAD system 1003. The work improvement support system 1 acquires 125 element work numbers for each part from the design data created by the 3D CAD system 1003.

The work improvement support system 1 updates the element work time basic unit 126 with the work actual time 1221, and calculates the target time 231 based on the updated element work time basic unit 126 and the element work number 125 for each part. To do.

The calculated target time 231 may be displayed on the screen of the work instruction terminal 23, or may be displayed on a display separate from the terminal 23.

FIG. 6 is a flowchart of the process S30 for setting the target time. The target time setting process S30 is executed by the target time calculation unit 1241 of the work improvement support system 1.

The target time calculation unit 1241 acquires the element work number 125 for each part based on the part information stored in the 3D CAD data storage unit 111 (S31). Further, the target time calculation unit 1241 refers to the element work time basic unit 126, and sets the work time basic unit (element work basic time) for each element work acquired in step S31 (S32).

Then, the target time calculation unit 1241 determines the target time (for each work) for each work process based on the number of element works acquired in step S31 and the element work time basic unit set in step S32. Calculate (S33) and set (S34).

FIG. 7 is a flowchart of the process S40 for automatically updating the element work time basic unit. The work improvement support system 1 acquires the work actual time 1221 for the target work (S41), and further acquires the number of element works included in the target work from the element work number database 125 (S42).

The work improvement support system 1 divides the actual work time acquired in step S41 by the number of elemental works acquired in step S42 (elemental work time basic unit = actual work time / number of elemental works) to obtain the basic unit of elemental work time. Calculate (S43).

The work improvement support system 1 compares the element work time basic unit (new element work time basic unit) calculated in step S44 with the current element work time basic unit (old element work time basic unit) (S44). ..

In the work improvement support system 1, was the element work time basic unit shortened, that is, was the new element work time basic unit shorter than the old element work time basic unit (new element work time basic unit <old element work? (Time basic unit) is determined (S45).

When the work improvement support system 1 determines that the newly calculated element work time basic unit is shorter than the current element work time basic unit (old element work time basic unit) (S45: YES), the current element work The time basic unit is updated with the new element working time basic unit (S46). When the element work time basic unit is updated to a new value, the target time (target time in the next cycle) calculated from the element work time basic unit and the number of element works is also updated (S47). After this, this process ends.

Work improvement when the newly calculated element work time basic unit cannot shorten the current element work time basic unit (S45: NO), that is, when the new element work time basic unit is equal to or greater than the old element work time basic unit. The support system 1 maintains the current element work time basic unit (S48) and ends this process.

The calculated target time becomes the target time for each product in the work improvement support system 1, and is shared by, for example, the design department, the production control department, and the manufacturing department. The design department calculates the manufacturing cost based on the set target time. The production control department can make a production plan based on the set target time. In the manufacturing department, the number of workers can be determined based on the set target time.

A state of analyzing the working process of the product will be described with reference to FIGS. 8 to 10. In this embodiment, the assembly design drawing (work instruction screen (for each part) obtained from the design department and the automatically calculated target time are used. In this embodiment, the target time and the actual work time are compared. Therefore, the work with a large deviation can be extracted and the neck work can be analyzed.

FIG. 8 is an example of the analysis screen G1 provided by the work improvement support system 1 via the user interface device 128.

The screen G1 for analyzing the work process includes, for example, a plurality of buttons B11 to B13, an analysis result screen C10, a work instruction screen extraction unit C20, and a work video extraction unit C30.

The analysis result screen C10 is, for example, the work No. It is composed of C11, drawing number C12, process C13, RFID start C14, RFID end C15, working time C16, target time C17, and deviation C18.

The worker, for example, work No. When C11 performs the work of "1", that is, when the work in which the drawing number C12 is "FG1" and the process C13 is "PR1" is executed, the work improvement support system 1 starts RFID from the work instruction system 11. C14 (work start time) and RFID end C15 (work end time) are acquired.

As described above, the worker causes the RFID reader 22 to read the two pieces of information, the worker tag and the work guidance form tag. The work instruction system 11 calls the assembly design drawing (work instruction screen 300 for each part) of the work target according to the information read by the RFID reader 22, and transmits it to the work instruction terminal 23.

The start time and end time of the work for each part are obtained as the difference between the opening and closing times of the work instruction screen 300, and are stored in a specific database 1221. The difference in the opening / closing time of the work instruction screen 300 is the difference between "T11" at the RFID start E14, which is the time when the worker activates the cell 21, and "T12" at the RFID end E15, which is the time when the work is finished. Can be sought. This difference (= T12-T11) is stored as "T13" in the working time E16. The deviation C18 is the difference between the target time C17 and the working time C16 (deviation = (T12-T11) -T13).

When the process button B11 is operated by the user, the work improvement support system 1 rearranges the order of the records in the analysis result screen C10 in the process order. Work No. When the button B12 is operated by the user, the work improvement support system 1 sets the record in the analysis result screen C10 as the work No. Sort in order. Similarly, when the worst order button B13 is operated by the user, the work improvement support system 1 sorts the records in the analysis result screen C10 in the worst order, that is, in the order of the largest deviation.

As described above, the target time C17 can be calculated from the number of element work (number of component elements) obtained from the component information of the 3D CAD data of the target product and the element work time basic unit. The number of component elements consists of, for example, the number of bends, plate thickness, material, welding length, number of mounting parts, etc., and can be calculated from the number of times and type of each element.

The calculated target time is assigned to each page of the work instruction screen 300. The target time may be displayed on the screen of the work instruction terminal 23, or may be displayed on a display other than the work instruction terminal 23.

The work improvement support system 1 extracts and displays a work instruction screen 300 (page) corresponding to the extracted neck work. As a result, the user can confirm the contents of the work instruction.

For example, in the case of the bending process, a page of the work instruction screen 300 is prepared for each part of the work instruction system 11. The work improvement support system 1 can directly call the designated bending instruction screen page and display it on the screen G1.

The video (moving image) during work is constantly recorded by one or more cameras 24. It is also possible to record video during times when work is not being performed. The work improvement support system 1 can extract the image of the neck work from the work video database 127 based on the extracted time stamp of the neck work and display it on the screen G1.

In this way, in the work improvement support system 1, in addition to the analysis result screen C10 that displays the neck work in the order of deviation on the analysis screen G1, the page and the work video of the work instruction screen 300 corresponding to the neck work selected on the screen C10. 1271 and is displayed. As a result, the user can efficiently analyze the neck work.

An example of a screen for comparing the repeatedly executed work for each part with the past actual value will be described with reference to FIGS. 9 and 10.

FIG. 9 is an example of the screen G2 for comparing the target value and the actual work time. On the upper side of the screen G2, a graph for comparing the lead time (“LT” in the figure) with the actual value (actual work time) and the target value (target time) is shown. At the bottom of the screen G2, a bar graph of the analysis result of the difference between the actual value and the target value is shown. Below the screen G2, a list located next to the bar graph and showing the same contents as the analysis result screen C10 is shown.

FIG. 10 is an example of the screen G3 for comparing the champion data and the actual value (actual work time). The screen G2 shown in FIG. 9 and the screen G3 shown in FIG. 10 are basically the same, but the screen G3 includes a button for updating the champion data. Champion data is the data obtained with the shortest actual work time in the target work.

The second embodiment will be described with reference to FIGS. 11 and 12. Since each of the following examples including this embodiment corresponds to the above-described modified example of the first embodiment, the differences from the first embodiment will be mainly described. In this embodiment, the target time is modified in consideration of the skill level of the worker.

As described in steps S31 to S33 of FIG. 6, the work improvement support system 1 acquires the number of element work (S51), sets the element work time basic unit (S52), and sets the element work number and the element work time original. The target time for each work process is calculated from the unit (S53).

Further, in this embodiment, the work improvement support system 1 corrects the target time calculated in step S52 based on the skill coefficient of the worker (S54). Then, the work improvement support system 1 sets the corrected target time (S55).

FIG. 12 is an example of a table 1231 that manages skill coefficients. The skill coefficient management table 1231 is managed by, for example, the worker management unit 123.

The skill counting management table 1231 has, for example, a management number 12311, a worker name 12312, years of experience 12313, a number of qualifications held 12314, a number of defects 12315, a worker rank 12316, and a skill coefficient 12317.

Consecutive numbers are set for the control number 12311. The worker name 12312 is information that uniquely identifies each worker. In the worker name 12312, the worker's name and / or the worker ID can be set.

The number of years of experience 12313 indicates the number of years of experience of the worker (for example, the period after being assigned to the work site 2). The number of qualifications held 12314 is the number of qualifications possessed by the worker. The number of defects 12315 indicates the number of defective products generated during the work.

The worker rank 12316 is a value when the ability of the worker is ranked. Here, they are ranked in alphabetical order such as "A" to "D". Rank "A" is given to the best worker.

The skill coefficient 12317 corresponds to a "predetermined coefficient". The skill coefficient is set according to the values of the number of years of experience 12313, the number of qualifications held 12314, the number of defects 12315, and the worker rank 12316. In the example of FIG. 12, the better the value of rank 12316, the larger the skill coefficient. In the example of FIG. 12, if the rank is "A", the coefficient is "1.2", if the rank is "B", the coefficient is "1.0", if the rank is "C", the coefficient is "0.9", and if the rank is "D", the coefficient is "0". It is set to be "0.5".

This embodiment configured in this way also has the same effect as that of the first embodiment. Further, in this embodiment, since the target time can be adjusted according to the skill coefficient set for each worker, the target time can be set according to the skill level of the worker. Therefore, according to this embodiment, it is possible to suppress defects (for example, increase in the number of defects, increase in stress of the operator, etc.) due to setting an unreasonable target time, and it is possible to improve the environment of the work site 2.

A third embodiment will be described with reference to FIG. In this embodiment, the champion data (champion time) is automatically updated. Hereinafter, the champion data will be referred to as the champion time.

The work improvement support system 1 acquires the actual work time (S61) and compares the acquired actual work time with the current champion time (S62).

The work improvement support system 1 determines whether the actual work time is shorter than the champion time (S63). When the actual work time is shorter than the champion time (S63: YES), the work improvement support system 1 updates the champion time (S64). That is, the actual work time acquired in step S61 is used as the new champion time.

When the actual work time is equal to or longer than the champion time (S63: NO), the work improvement support system 1 maintains the current champion time (S65).

This embodiment configured in this way also has the same effect as that of the first embodiment. Further, according to this embodiment, the best work is automatically registered as the champion time. The best work is the work performed in the shortest working time in the process. According to this embodiment, the actual work time of the best work in each process is stored as the champion time and can be referred to in each process.

A fourth embodiment will be described with reference to FIG. In this embodiment, the machine time of the production equipment (machine M in FIG. 1) is automatically reflected in the target time. The machine time is the time required for processing on the machine M.

The work improvement support system 1 acquires the machine time of the machine M (S71), and compares the actual work time including the acquired machine time with the target time (S72). The target time here is a time calculated from the machine data (equipment data) previously set in step S75 described later.

The work improvement support system 1 determines whether the target time is smaller than the actual work time (S73).

When the target time is smaller than the actual work time (S73: YES), the work improvement support system 1 analyzes the difference between the target time and the actual work time (S74), and corrects the machine data based on the analysis result. (S75).

When the target time is equal to or longer than the actual work time (S73: NO), the work improvement support system 1 corrects the target time (S76).

In this embodiment configured in this way, the machine time based on the machine data (equipment data) can be reflected in the target time automatically calculated from the 3D CAD data (design product information).

Since some of the work processes for producing the target product also exist in the process that depends on the equipment, in this embodiment, the analysis for work improvement is supported in consideration of the machine time.

By extracting the equipment data of each process depending on the equipment, the work improvement support system 1 can calculate the man-hours that cannot be extracted only by the manual work time of the worker.

For example, in the case of a drilling machine, the operator is not working during the time to drill the part. Therefore, unless the machine data is acquired, the accurate work actual time cannot be acquired. In addition, it is not possible to consider disturbances during processing only with the originally set time of the equipment.

Therefore, the work improvement support system 1 of this embodiment is adapted to accurately calculate the target time by acquiring the machine data.

In this embodiment configured in this way, for example, "a work improvement support system that supports work improvement, and a target time for each work process is calculated in consideration of equipment data of equipment used in the work process. The target time calculation unit to be performed, the work actual time calculation unit that calculates the work actual time for each work process in consideration of the machining time required for the work in the equipment, and the target time and the work actual time are compared. The target time calculation unit includes a work analysis unit for analysis, and the target time calculation unit includes the number of elemental works included in the work process and the basic elemental work time defined as the basic time required for the elemental work. Therefore, it can also be expressed as a work improvement support system that calculates the target time for each work process. "

The present invention is not limited to the above-described embodiment. A person skilled in the art can make various additions and changes within the scope of the present invention. In the above-described embodiment, the configuration is not limited to the configuration example shown in the accompanying drawings. The configuration and processing method of the embodiment can be appropriately changed within the range of achieving the object of the present invention.

In addition, each component of the present invention can be arbitrarily selected, and an invention having the selected configuration is also included in the present invention. Further, the configurations described in the claims can be combined in addition to the combinations specified in the claims.

1: Work improvement support system, 2: Work site, 11: Work instruction system, 12: Work analysis system, 21: Cell, 22: RFID reader, 23: Work instruction terminal, 24: Camera, 25: Product, 111: 3DCAD Data storage unit, 113: work instruction generation unit, 114: work instruction display unit, 121: work status monitoring unit, 122: work performance management unit, 123: worker management unit, 124: work analysis unit, 125: element work database , 126: Element work time basic unit database, 127: Work video database, 128: User interface unit, 1241: Target time calculation unit, 1242: Work actual time calculation unit, 1243: Analysis result provision unit, 300: Work instruction screen

Claims (5)

A work improvement support system that supports work improvement
A target time calculation unit that calculates the target time for each work process,
The work actual time calculation unit that calculates the work actual time for each work process, and
A work analysis unit that compares and analyzes the target time and the actual work time,
With
The target time calculation unit is based on the number of element works, which is a unit element obtained by dividing at least one work included in the work process, and the element work basic time defined as the basic time required for the element work. calculates a target time for each of the working process,
Based on the actual work time for each work process, the element work basic time corresponding to the element work included in the work process is updated.
Work improvement support system. The work actual time calculation unit calculates the work actual time according to the reaction of the worker to the work instruction screen provided to the worker for each work process.
The work improvement support system according to claim 1. Further, an analysis result providing unit for providing an analysis result including at least a comparison result by the work analysis unit is provided.
The work improvement support system according to claim 2. The analysis result providing unit compares the work instruction screen and the work image of the selected work process with respect to the selected work process, and provides them together with the comparison result.
The work improvement support system according to claim 3. The target time calculation unit corrects the target time based on a predetermined coefficient set in advance for each worker.
The work improvement support system according to claim 4.

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