JP4234405B2 - Man-hour automatic calculation system, man-hour automatic calculation method and program thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a system for automatically calculating man-hours and cost estimation required when manufacturing a sheet metal part.
[0002]
[Prior art]
Conventionally, as a system for estimating man-hours and costs of sheet metal parts, a method of extracting machining elements from computer-aided design (CAD) data created in advance by a designer is known (see, for example, Patent Document 1).
[0003]
This method is a method for recognizing a machining shape using a local feature or a rough machining feature of CAD data and estimating a cost. According to this method, the costs for punching, cutting and bending can be obtained instantaneously and with high accuracy.
[0004]
However, in this method, when CAD data is not available, it is necessary to manually extract processing elements from a paper drawing, which requires a lot of labor. Also, if you have 2D CAD data as CAD data, if you represent each part in the actual size mainly for large sheet metal parts, etc., the lines will overlap and you will not be able to determine the shape when you output it as a drawing. Is often expressed in a deformed manner, which necessitates the conversion of CAD data into an accurate shape.
[0005]
Furthermore, even when CAD data is stored as three-dimensional CAD data, it is impossible to make a production plan on site using man-hours and costs because only the punching and bending processes can be calculated. There was a problem.
[0006]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 9-62729
[Problems to be solved by the invention]
The present invention has been made in view of the above-described conventional problems, and does not depend on design means without using CAD data, and can be estimated with high accuracy in consideration of processing and assembly processes. An object is to provide an automatic calculation system.
[0008]
[Means for Solving the Problems]
According to claim 1 of the present invention, the process setting means for setting the machining and assembling process of parts from the assembly information and part shape information of sheet metal processing created by the CAM system, and the process information set by the process setting means From the processing element extraction means for analyzing and extracting only the processing element information, the standard time search means for searching for the standard time of the work corresponding to the processing element, the extracted processing element and the searched standard time Provided is a man-hour automatic calculation system comprising man-hour calculating means for calculating man-hours.
[0009]
According to the fourth aspect of the present invention, the process setting step for setting the machining and assembling process of the part from the assembly information and the part shape information of the sheet metal processing created by the CAM system, and the process information set by the process setting step are set. a machining element extracting step of extracting the information of only the processing element analyzes, a machining element extracting means for extracting information by analyzing the process information set by the process setting means, standard time of work corresponding to the processing elements A standard time search step having information as a database and searching for a standard time of work corresponding only to the machining element extracted by the machining element extraction step, and man-hours from the extracted machining element and the retrieved standard time There is provided a man-hour automatic calculation method characterized by comprising a man-hour calculating step for calculating.
[0010]
According to the fifth aspect of the present invention, the steps of acquiring the sheet metal working assembly information and the part shape information created by the CAM system, determining and setting the parts assembling process, and setting the work assembling process are provided. A step of acquiring the determined / set process information and analyzing it to extract information on only the machining elements, and a step of extracting the machining elements having standard time information of work corresponding to the machining elements as a database A step of searching for a standard time of work corresponding only to the machining element extracted by the step, and a step of calculating and calculating a man-hour from the extracted machining element and the searched standard time. A man-hour automatic calculation program is provided.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 shows an example of the overall configuration of a man-hour automatic calculation system according to an embodiment of the present invention. That is, the man-hour automatic calculation system includes an assembly data storage unit 11 for storing assembly data of sheet metal processing such as schedule, nesting, parts, numerical control (NC) from a computer-aided manufacturing (CAM) system, and these data. A process setting unit 12 for analyzing and recognizing an operation pattern and determining and setting a process, and storing part shape data for extracting a machining element from the process when the recognized operation pattern process is performed manually by a human Shape data storage unit 13, processing element extraction unit 14 that actually extracts a processing element from each process, standard time data storage unit 15 that stores a standard time as a man-hour for each processing element, and extracted processing element Is multiplied by the standard time of the man-hour for each machining element, and the man-hour calculating unit 16 for calculating the man-hour, and the man-hour data storing unit 17 for storing the calculated man-hour Consisting of.
[0013]
The above-described assembly data storage unit 11 serving as basic data for man-hour calculation is a part that stores a series of data groups designed by the CAD system and created in detail by the CAM system.
[0014]
Each data as shown in FIG. 2A is stored in the assembly data storage unit 11. In other words, the assembly data includes schedule data composed of data such as material symbols, material thicknesses, material dimensions, the number of workpieces, operation patterns, etc. of the material to be processed, nesting data such as the names of parts arranged in the material, the number of parts arranged, It consists of part data such as part names and development dimensions in units of parts, and NC data including the NC program of the processing machine when the operation pattern process is performed by the processing machine. Here, the operation pattern in the schedule data has some variations (4 types in the example of FIG. 4) as shown in the example of FIG. It is the information shown, and it is a symbolized order of the processing machine. For example, if the operation pattern is “Z”, the corresponding sheet metal part is cut out from the material with the size of the expanded dimension of the part with a shear (routine is SS), and is bent with a panel bending machine (routine is NF), It is a process in which an adhesive for attaching a reinforcing material is applied with an adhesive applicator (routine is AG), reinforcement is assembled with an assembling machine (routine is AS), and a product is completed through pressure curing. These routines described above are used in a processing machine (such as a shear, an NC turret punch press, a laser processing machine, a panel bending machine, etc.) that requires an NC program, and have two digits as in the example shown in FIG. Expressed by a symbol. The nesting data is data indicating, for example, how to arrange necessary parts for one sheet metal and efficiently cut it out. Actual processing is performed by the assembly data as described above. FIG. 2 (b) shows an image representation of these processed on a sheet metal to be processed.
[0015]
Next, the process flow of the manhour automatic calculation process in this embodiment of the present invention will be described in detail with reference to the flowchart shown in FIG.
[0016]
First, in step S301, the man-hour setting unit 12 analyzes data stored in the assembly data storage unit 11, and determines a process from operation pattern information of each component.
[0017]
In the next step S302, the man-hour setting unit 12 checks whether the analyzed and determined process is performed by the processing machine. If it is a process by a processing machine, the process proceeds to step S303, and if it is a process by manual work, the process proceeds to step S304.
[0018]
In step S303, since the process is performed by the processing machine, the processing element extraction target is NC data of the processing machine existing in the assembly data storage unit 11. Here, the example which extracted the process element from NC data (NC program) of a processing machine is shown in FIG.6, FIG.7, FIG.8.
[0019]
FIG. 6 shows an example of extracting punching times, axial movement distances, loading / unloading, and gripping machining elements from the NC data of the NC turret punch press shown in FIG. The number of punches can be obtained by counting the number of punch commands for the mold, and the axis movement distance can be obtained by integrating the distance between the origin and the coordinates of the punch commands. In the case of FIG. 6A, as shown in FIG. 6B, the number of punches is 100, the axial movement distance is 5285.5 mm, the loading / unloading is one time, and the gripping is once.
[0020]
FIG. 7 shows an example of extracting processing elements for loading / unloading, standard die bending, hemming bending, and die replacement from the NC data of the panel bending machine shown in FIG. The number of times of die replacement is counted as one when the die length is different, and is calculated by a method that does not count if the die length is the same, and can be obtained from standard bending or hemming bending from the bending type. In the case of FIG. 7A, as shown in FIG. 7B, the loading / unloading is performed once, the standard mold bending is performed four times, the hemming bending is performed three times, and the mold replacement is performed twice. Show.
[0021]
FIG. 8 shows an example in which processing elements of the axial movement distance and the number of bonds (the number of reinforcements) are extracted from the NC data of the adhesive applicator shown in FIG. In this case, the axial movement distance is 2454.5 mm and the number of bonds is 3, as shown in FIG.
[0022]
In step S304, since the process is a manual process, the part shape data stored in the shape data storage unit 13 is a processing element extraction target. An example of the content of the part shape data stored in the shape data storage unit 13 is shown in FIG. In this example, the part shape data consists of 6 types from A01 to F10. In A01 to E01, in addition to the part shape, the attribute information such as the material symbol and the product classification that distinguishes the main body from the reinforcement, F01 to F10 are the parts This indicates the name, attachment position, number of attachments, etc. of the reinforcing parts to be attached when is a main body.
[0023]
An example of processing element extraction in the above-described manual process is “press brake”, which performs bending of a sheet metal. In many “press brake” manufacturing processes, a person sets the mold preparation, bending angle, correction value, back gauge amount, and the like. The bending element of this part is determined by using the bending length, bending height, bending R, bending angle, etc. of the part shape data “B01” in FIG. It is possible to extract machining elements similar to those extracted from NC data.
[0024]
In step S305, the machining element extraction unit 14 extracts machining elements from process data (NC data or part shape data).
[0025]
In the next step S306, the manhour calculation unit 16 searches the standard time data storage unit 15 for the work standard time corresponding to each machining element and acquires it. FIG. 9 shows an example of the correspondence between the machining elements and the standard time. This represents the processing standard time (time required for processing) corresponding to the number of times of processing operations in each processing machine, the unit length, and the number of units (number of units).
[0026]
In step S307, when there are a plurality of processing elements (same types) that have acquired the standard time, the number of man-hours is calculated by multiplying the number and integrating the number. The calculated man-hour information is stored in the man-hour data storage unit 17. In step S308, when there are a plurality (a plurality of types) of machining elements extracted in step S305, the process returns to step S306 to search / acquire the standard time of the machining element and repeat the calculation of man-hours.
[0027]
In step S309, if there are a plurality of parts manufacturing processes, the process returns to step S302, and processing element extraction and man-hour calculation in each process are repeated.
[0028]
FIG. 10 shows an example of a result obtained by performing the above processing and totaling each process. The cost can be easily calculated by multiplying the man-hour data by the unit price per unit time of the work subject (processing machine or manual work) in each process.
[0029]
The above embodiment of the present invention has been described on the assumption that all process and machining element data exist in the machining assembly data storage unit, the shape data storage unit, and the standard time data storage unit.
[0030]
However, there may be cases where part processes, processing elements, and standard time data do not exist in the system. In such a case, a process that makes it possible to calculate man-hours by providing a man-machine interface function that detects and warns by detecting processes and machining elements that cannot be calculated automatically, and enables manual input by hand It may be. This method has an advantage that more flexible and highly accurate man-hour calculation is possible.
[0031]
In addition, the information input using the interactive input function as described above is immediately reflected and stored in each data (sheet metal working assembly data 11, part shape data 13, standard time data 15) in the system. It may be a method. By this function, not only the information that has not been stored in the system so far can be acquired and stored, but it can be reused.By this, the system becomes a man-hour automatic calculation system having a learning function. The more it is used, the more the man-hour can be calculated.
[0032]
Note that the CAM system in the present invention refers to a system for manufacturing parts and the like easily and flexibly using a computer.
[0033]
【The invention's effect】
As described above, in the present invention, by using the CAM data generated from the CAM system that is widely spread and used at the production site for man-hour calculation, the machining / assembly process is not influenced by the design means. There is an effect that it is possible to obtain an automatic man-hour calculation system capable of taking into account highly accurate estimation.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an example of the overall configuration of a processing unit according to an embodiment of the present invention.
FIG. 2 is a diagram showing a configuration example of an embodiment according to the present invention.
FIG. 3 is a flowchart for explaining the operation of an embodiment of the present invention.
FIG. 4 is a diagram showing an example of an operation pattern of a process in one embodiment of the present invention.
FIG. 5 is a diagram showing an example of shape information according to an embodiment of the present invention.
FIG. 6 is a diagram showing an example of NC data according to an embodiment of the present invention.
FIG. 7 is a diagram showing an example of NC data according to an embodiment of the present invention.
FIG. 8 is a diagram showing an example of NC data according to an embodiment of the present invention.
FIG. 9 is a diagram showing an example of standard time data in one embodiment of the present invention.
FIG. 10 is a diagram showing an example of man-hours for processes in an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Processing assembly data storage part, 12 ... Process setting part, 13 ... Shape data storage part, 14 ... Processing element extraction part, 15 ... Standard time data storage part, 16 ... Man-hour calculation unit, 17... Man-hour data storage unit.

Claims (8)

A process setting means for setting the machining and assembling process of parts from the assembly information and part shape information of sheet metal processing created by the CAM system;
Processing element extraction means for analyzing the process information set by the process setting means and extracting information on only the machining elements;
A standard time search means for searching for a standard time of work corresponding to the machining element;
A man-hour automatic calculation system comprising: a man-hour calculating means for calculating man-hours from the extracted machining elements and the retrieved standard time. Means for detecting that there is no information on any of the process by the process setting means , the machining element by the machining element extraction means, and the work standard time corresponding to the machining element by the standard time search means ;
When it is detected that the information does not exist;
Complementary information input means for manually inputting information that complements the information that does not exist;
2. The man-hour automatic calculation system according to claim 1, further comprising means for reflecting the input complementary information in man-hour calculation.   3. The manhour automatic calculation system according to claim 2, further comprising means for storing the complementary information input by the complementary information input means and reusing it in the subsequent manhour calculation. A process setting step for setting a machining and assembling process of parts from assembly information and part shape information of sheet metal working created by the CAM system;
Processing element extraction step for analyzing process information set by this process setting step and extracting information of only processing elements;
Processing element extraction means for analyzing process information set by the process setting means and extracting information;
A standard time search step of searching for a standard time of work corresponding only to the machining element extracted by the machining element extraction step, having standard time information of work corresponding to the machining element as a database;
A man-hour automatic calculation method comprising: a man-hour calculating step of calculating man-hours from the extracted machining element and the retrieved standard time. Obtaining sheet metal processing assembly information and part shape information created by the CAM system, determining and setting the processing and assembly process of the parts;
Obtaining the process information determined and set by the step of setting the machining assembly process, analyzing this and extracting only the machining elements; and
Searching for a standard time of work corresponding only to the machining element extracted by the step of extracting the machining element , having standard time information of work corresponding to the machining element as a database;
A computer program for causing a computer to execute a step of calculating and calculating a man-hour from the extracted machining element and the searched standard time. The processing element extraction means further comprises manual processing element extraction means for analyzing the process information set by the process setting means and extracting manual processing element information when there is manual data. The man-hour automatic calculation system according to claim 1, wherein In the machining element extraction means, the process information set by the process setting means is analyzed, and if there is manual work data, a manual work element extraction step for extracting information on the manual work element is further provided. The man-hour automatic calculation method according to claim 4, further comprising: The processing element extraction means analyzes the process information set by the process setting means, and if there is manual work data, further includes a manual processing element extraction step for extracting information on the processing elements of the manual work. 6. The manhour automatic calculation program according to claim 5, wherein the manhour automatic calculation program is executed.

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