JP2001166680A - Work skill supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work skill supporting device capable of enhancing the skill of a worker based on the evaluation by evaluating the working skill of the worker objectively. SOLUTION: A measuring means 60 measures working results of respective working processes by a worker to store them in a working quality database 40 as working quality data. These quality data are compared with standard working quality data stored in a standard working quality database 44 and, then, the working skill of the worker is evaluated based on the compared results.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to
The present invention relates to a work proficiency support device that supports a proficiency training of a work including a plurality of work processes.

[0002]

2. Description of the Related Art For example, in a production line for manufacturing a product composed of a very large number of parts such as an automobile, a work procedure manual and parts used for the work are provided for each work station (work process). Are provided, and the worker performs an assembling operation of predetermined parts while looking at the work procedure manual and the assembling manual.

In recent years, high-mix low-volume production has become mainstream in order to respond to various needs of users. In order to minimize capital investment, a single production line requires a plurality of different types of products. It is common to supply and assemble related components in a mixed manner. In this case, the worker refers to work procedures and assembly instructions that differ for each product,
Work must be done without error.

In order to avoid mistakes in the assembling procedure by instructing a worker on a production line by using a video or a voice,
By displaying measurement data such as tightening torque on the display, it is possible to easily confirm the work quality, or by reading the unique number of the part from the part and performing the work specified based on it, etc. Various work support devices in a production line have been proposed.

For example, Japanese Patent Application Laid-Open No. H11-39524 discloses a display of a work support device arranged in a work station (work process), which displays a work auxiliary screen indicating work in the work station (work process). Perform the work in accordance with the display, determine whether the work result is within a predetermined range, and switch to the next work instruction screen only when the work result is within the range, to perform an accurate and efficient work. There is disclosed a work support device that can perform the work.

[0006]

By the way, in the above-mentioned work support device, in order to further improve the work efficiency, it is necessary that the workers arranged on the production line have a certain skill level. is there. To this end, skills training is conducted for workers, data related to the work quality and work proficiency of workers are collected and evaluated objectively, and depending on the skill level of each work process, It is necessary to evaluate which workers should be assigned and which process should be further trained.

However, conventionally, such an evaluation is
Since the work leader was subjective, the work proficiency could not be evaluated objectively.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned inconvenience, and measures the work quality data, which is the result of the work performed by the worker in each work process, when performing the skill training of the manufacturing and assembly work. The objective of the present invention is to provide a work proficiency support device capable of objectively evaluating the work proficiency of a worker by comparing this with standard work quality data and improving the proficiency based on the evaluation. I do.

[0009]

In order to achieve the above object, the present invention measures work quality data which is a work result of each worker in each work process, and sets the work quality data in advance. It compares with a certain standard work quality data and evaluates the worker's work proficiency according to the comparison result. In this case, the worker can objectively evaluate his / her work proficiency.

A plurality of work quality data is obtained by repeating the above-mentioned work, and a statistical processing result obtained by statistically processing the data is compared with a standard statistical processing result obtained from the standard work quality data. By performing the evaluation of the work proficiency, more appropriate evaluation can be performed.

The worker can learn the work effectively by performing the work based on the work content instructed by the work instructing means.

Further, by displaying the evaluation result by the proficiency evaluation means, it is possible to easily grasp the proficiency of the worker.

[0013]

FIG. 1 shows a work station in a skill training to which an embodiment of a work learning support device according to the present invention is applied. At this work station, the trolley 1
A predetermined work instructed by the work learning support device 10 is performed by the worker M on the work W mounted on the work 2 using the tool 14, the component 16, and the like.

FIG. 2 is a block diagram showing the configuration of the work learning support device 10. As shown in FIG.

The work-learning support apparatus 10 includes a speaker 52 for giving a work instruction to the worker M by voice, a display 54 (display means) such as a CRT for displaying the work contents and work results for the work W, a display lamp 56, and the like. Output device 50 (work instruction means).

Further, the work learning support device 10 includes a worker M
And measuring means 60 such as a tester 64 for measuring the working time by the operator M.
Microphone 72 for inputting voice of repetition, push button / foot switch 7 operated and input by worker M as needed
4. Work input means 70 such as a bar code reader 76 for inputting a unique number of a work target component, a keyboard / mouse 78, etc.
Having.

Further, the work learning support device 10 has video cameras 82 and 84 (see FIG. 1) for recording the work situation of the worker M as necessary. These can be activated by the operator M operating the push button / foot switch 74, for example.

The output device 50, the measuring means 60, the work input means 70, and the video cameras 82 and 84 are connected to the control unit 22 (proficiency evaluation means) of the work learning support apparatus main body 20.

The control unit 22 includes video cameras 82 and 84
ON / OFF from an image capturing unit 24 that captures an image through a tester 64 that detects the presence or absence of pressure leakage or the like.
An ON / OFF signal processing unit 26 that processes an OFF signal;
For example, the measurement data processing unit 28 that processes the measurement data such as the operation time measured by the measuring device 62 and the unique number of the component 16 or the work W input by the barcode reader 76 of the operation input unit 70 are checked. The unique number check unit 30, the image display processing unit 32 that performs image display processing on the display 54, and the database processing unit 34 are connected.

The database processing unit 34 is connected to a database file 36 for storing databases such as unique number data for checking the unique numbers of the work W and the parts 16 and image data to be displayed on the display 54. The control unit 22 is connected to a program file 38 that stores a processing program for performing each processing described below and parameters including addresses and the like necessary for executing the processing program.

The database processing section 34 includes a work quality database 40 (work quality data storage means) which records work quality as a work result of the worker M, and a work quality data of the worker M measured by the measuring instrument 62. A work time database 42 in which work times are recorded, a standard work quality database 44 (standard work quality data storage means) in which standard work quality and standard work time are set for evaluating proficiency, and a standard work quality Time database 4
6 is compared with the standard operation quality and standard operation time and the operation quality and actual operation time by the operator M, and the proficiency database 48 recording the operation proficiency of the operator M evaluated based on the comparison result. It is comprised including.

Next, processing of skill training and proficiency evaluation using the work proficiency support device 10 configured as described above will be described with reference to the flowcharts shown in FIGS.

When the worker M activates the work learning support device 10 at the work station, the control unit 22 loads a processing program from the program file 38 and initializes each device connected to the work learning support device main body 20. Then, a work instruction preparation for the first work content instructed to the worker M is performed (step S1).

Next, in accordance with the processing program loaded from the program file 38, the control unit 22 displays a work instruction screen on the display 54, and gives an instruction to start the work by voice via the speaker 52 (step S2). For example, on the work instruction screen, the tool 14, the part 16 and the work W used for the work are displayed as an image, and a sentence such as "Please attach the part 16 to the work W using the tool 14" is displayed. Done. Further, the above-mentioned sentence is output by voice from the speaker 52.

The worker M operates the part 1 according to the work instruction.
6 and take out the unique number etc. of the bar code reader 76
To read. The data of the component 16 read by the barcode reader 76 is sent to the unique number check unit 30, and is used to check whether the worker M has selected the designated appropriate component 16.

At this time, the worker M operates the push button / foot switch 74, operates the video cameras 82 and 84, and records an image of his / her work situation. This video is played back later, and is used by the worker M to check his / her work status and check for work mistakes, and for persons involved in the skill training department and the like to observe the progress of the worker M's skill proficiency. Can be used.

When a work start instruction is given in step S2, the control unit 22 drives the measuring means 60 such as the measuring instrument 62 and the tester 64 to start the measurement of the work quality data by the worker M (step S3). . And worker M
When the instructed work is completed, the user operates the push button / foot switch 74 to input the work completion, and repeats the work completion by voice through the microphone 72.

The control section 22 continues to measure the work quality data until a work completion input is made, and when the work completion input is detected in step S4, terminates the work quality data measurement (step S5). The measured work quality data is recorded in the work quality database 40 (step S6).

The work quality data differs depending on the work content. For example, when the work content is bolt tightening, the work quality data is the torque when the bolt is tightened by the tool 14. Further, data measured by the measuring means 62, such as a gap or a run-out between the assembly members, can also be used as the work quality data.

On the other hand, the work quality data obtained as described above is compared with the standard work quality data stored in the standard work quality database 44, and the quality of the work quality is determined (step S7). For example, in the case of a tightening torque, for example, the standard work quality data is a standard tightening torque required as product quality, and is measured by a tool 14 such as a ratchet wrench as a result of an operation performed by an operator, and is input to the measurement data processing unit 28. It is determined whether the set tightening torque is within the range of the standard tightening torque, that is, whether the difference from the standard tightening torque is within a range allowable as the quality of the product.

If it is determined that the work quality is good (step S8) and the work process remains (step S9), instruction preparation for the next work content is performed (step S10). The processing from step S2 is repeated.

In step S7, as a result of determining the work quality of the worker M, if the work quality does not reach a certain quality level, the work learning support device 10 displays this result on the display 54 and returns to step S2. , And give a work instruction for the same work process. The worker M will repeatedly perform the training for the same work process. Work quality data, which is the result of these repeated work, is similarly stored in the work quality database 40.

On the other hand, when a large number of work quality data are accumulated in the work quality database 40, the work skill support device 10 statistically analyzes the work quality data of the worker M,
Work proficiency can be determined and output.

That is, in step S11 shown in FIG. 4, when the operation learning support device 10 is activated and a processing program is loaded from the program file 38, the control unit 22 controls the devices connected to the operation learning support device main body 20 to operate. Initialize and prepare for the analysis of the first operation for the worker M.

Next, the control unit 22 reads a large number of work quality data relating to the first work of the worker M who has performed the skill training from the work quality database 40 (step S1).
2) Analyze the data by statistical processing (step S1)
3) Comparing the statistical processing result of the work quality data with the standard statistical processing result obtained by statistically processing the standard work quality data, and determining the skill level (step S14). This determination result is output to the proficiency level database 48, and
The information is displayed on the display 54 (step S15).

Next, in step S16, it is determined whether or not this is the last work process scheduled as a skill training, and if a work process remains, analysis preparation for the next work is performed (step S17). , The processing from step S12 is repeated.

Here, the statistical analysis processing of the work quality data and the proficiency level determination processing in steps S13 and S14 are specifically performed as follows.

For example, when the work quality data is the tightening torque, the standard deviation S of the tightening torque (the statistical processing result of the work quality data) is obtained from the work quality data of the worker M by the following equation.

[0039]

(Equation 1) (1) In the formula, x _i is the tightening torque data, x _a is tightened average value of the torque, n represents a measurement number of data (operation frequency). By comparing the standard deviation S with the result of the standard statistical processing, it is possible to evaluate the variation of the tightening torque in the bolt tightening operation and determine the skill level of the worker M.

FIG. 5 is a diagram showing the variation in the tightening torque of the worker M obtained in this manner. In the case of a skilled worker who has sufficiently learned the work, the variation is shown as a graph g1 shown by a solid line. Is small, and in the case of an unskilled person, the variation is large as shown by a graph g2 indicated by a dotted line.

Further, the standard deviation S of the tightening torque of the worker M obtained as described above is determined to which stage of the proficiency level staging a predetermined level corresponds to, so that the worker M's Work proficiency for each work process can be determined.

Further, as a method of determining the proficiency in step S14, as shown in FIG. 6, the proficiency rank of each work process of the worker M is comprehensively determined, and the overall level of the work proficiency is determined. be able to.

The graph f1 is, for example, a distribution of work quality data in the assembling work of the part 1 of the model A, and has the least variation in data. The graph f2 is a distribution of the work quality data in the work of the part 2 of the model A, and the dispersion of the data is moderate. The graph f3 is a distribution of the work quality data in the work of the part 3 of the model B, and the data has the largest variation.

As a result of such statistical analysis processing, the worker M
Indicates that the skill level of the work of the part 1 of the model A is good, the skill level of the work of the part 2 of the model A is medium, and the skill level of the work of the part 3 of the model B is poor. The proficiency determination level is medium, and it can be determined that it is particularly necessary to master the operation of the part 3 of the model B.

The result of this determination is output to the proficiency level database 48 in step S15. In this way, the proficiency data for each task of each worker M recorded in the proficiency database 48 can be used for the skill training plan of the worker M and the like.

For example, FIG.
In each of the operations 5 to 5 (horizontal axis), a graph indicating the number of days (vertical axis) required for the workers A to D to acquire a predetermined proficiency level is displayed on the display 54. From this result, 4 days of skill training is sufficient for mastering of work 4, but 9 days of training is required on average for mastering of work 5, which is utilized for worker skill training plan. be able to.

The work time of the worker M is measured,
By evaluating the obtained work time by comparing it with the standard work time, and using both the comparison result and the work quality evaluation result, it becomes possible to more accurately perform the work proficiency evaluation judgment.

[0048]

As described above, according to the work proficiency support device according to the present invention, the work proficiency of the worker is objectively evaluated from the work quality data of the work performed by the worker for each work process. Since the judgment is made, the quality assurance of the product after the skill training can be accurately performed. Further, when the work quality does not reach a certain level, an effect is obtained that the worker himself can know objectively based on the result output on a display or the like. As a result, it is possible to obtain information as to which task should be focused on the task learning, thereby effectively improving the working ability.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a work station in a skill training to which an embodiment of a work learning support device according to the present invention is applied.

FIG. 2 is a block diagram showing a configuration of a work learning support device shown in FIG.

FIG. 3 is a flowchart of a work learning process by the work learning support device shown in FIG. 1;

FIG. 4 is a flowchart of a skill level determination process by the work skill support device shown in FIG. 1;

FIG. 5 is a graph for explaining a method of judging work proficiency based on work quality data measured from a work result performed by a worker.

FIG. 6 is a graph for explaining comprehensive judgment of work proficiency based on work quality data for each work process of a specific worker.

FIG. 7 is a diagram showing, on a display, a graph indicating the number of days required for each worker to acquire a predetermined proficiency level for each work.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Work learning support apparatus 20 ... Work learning support apparatus main body 22 ... Control part 28 ... Measurement data processing part 32 ... Image display processing part 34 ... Database processing part 36 ... Database file 38 ... Program file 40 ... Work quality database 42 ... Work Time database 44 ... standard work quality database 46 ... standard work time database 48 ... skill level database 50 ... output device 54 ... display 60 ... measuring means 62 ... measuring instrument 70 ... work input means 74 ... push button / foot switch 78 ... keyboard / Mouse M… Worker W… Work

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masao Nitta 1-10-1 Shinsayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd. F-term (reference) 2C028 AA10 BA01 BA02 BA03 BB04 BC01 BC02 BD02 CA10 CA12 3D114 AA20 BA40 JA05 JA20 5B049 AA06 BB07 BB23 CC21 EE01 FF03 9A001 DD11 GG05 JJ45

Claims (4)

[Claims] 1. A work proficiency support device for assisting a worker in learning a work consisting of a plurality of work processes, wherein the work quality data is a work result of each work process performed by the worker. Means, a work quality data storage means for storing the work quality data, a standard work quality data storage means for storing standard work quality data in each work process, and the standard work quality data stored in the standard work quality data storage means. A skill evaluation means for comparing standard work quality data with the work quality data stored in the work quality data storage means and evaluating a worker's work skill level; apparatus. 2. The apparatus according to claim 1, wherein the proficiency evaluation means statistically processes a plurality of the standard work quality data and a statistical processing result obtained by statistically processing the plurality of work quality data. A work proficiency support device characterized by comparing the obtained standard statistical processing result and evaluating the work proficiency of a worker. 3. The apparatus according to claim 1, further comprising work instruction means for instructing a worker on the work content of each work process, wherein the worker performs work in accordance with the work content specified by said work instruction means. A work learning support device characterized by the following. 4. The work proficiency support device according to claim 1, further comprising display means for displaying an evaluation result of the work proficiency of the worker.