KR20180016894A

KR20180016894A - Method for calculating a cost price for a wiring harness using the modular BOM

Info

Publication number: KR20180016894A
Application number: KR1020160100893A
Authority: KR
Inventors: 강정태; 훈 박; 임창성; 양천영
Original assignee: 주식회사 유라
Priority date: 2016-08-08
Filing date: 2016-08-08
Publication date: 2018-02-20
Also published as: KR101992476B1

Abstract

The present invention relates to a method of calculating a cost of a wiring harness, and more particularly, to a method of calculating a cost of a wiring harness by tracing a path of a circuit in a manufacturing drawing of a wiring harness and extracting information of all connected materials, A method for calculating a cost of a wiring harness of an automobile is disclosed which is characterized by generating a modular BOM by allocating option information and calculating a cost for each material and a cost for each option using the generated modular BOM.

Description

A method for calculating a wiring harness cost using a modular BOM is disclosed.

Generally, a bill of materials (BOM) refers to a bill of materials, which is roughly divided into an engineering BOM, a menu BOM, and a planning BOM.

The engineering BOM is a description based on functions of each unit as a design basis of a product, the menu packing BOM is a manufacturing specification for a manufacturing and assembling process, the planning BOM is a specification for production planning and cost calculation analysis, to be.

However, the design and production of the wiring harness for circuit wiring of the electric telecommunication and the electric system of the automobile use the method according to the part number, and the manufacturing drawing and BOM are also designed and managed according to the part number.

In the past, the number of product numbers has not been a major problem, but the number of automobile part numbers increases exponentially as the demands of customers and the options of automobiles are diversified. have.

In general, the part number has 2 ⁿ (n is the number of options) number, so an increase in the option of the vehicle necessarily leads to an increase in the part number, and the width becomes considerably large. Therefore, as shown in FIG. 1, the cost calculation method for the wiring harness of the automobile is to generate n number of product numbers as many as the number of options from the manufacturing drawing, and calculate n BOMs are generated, and the cost for each of n product numbers is calculated.

However, since the BOM is generated as many as the number of all the existing part numbers, a large number of parts are generated according to an increase in the consumer demand and the option of the automobile, so that the time for data processing thereof is also increased exponentially. For example, if the number of parts required for the wiring harness design is 10,000, to process one part number per 10 seconds, 10,000 part number x 10 seconds = 100,000 seconds, which takes about 27 hours of data processing time.

Therefore, there is a need to more efficiently improve the conventional cost calculation method in which the data processing amount and the processing time are increased as described above.

The present invention has been made in order to overcome the above-mentioned problems of the related art, and it is an object of the present invention to solve the problem that cost calculation becomes difficult due to an increase in the number of parts according to the demands and options of automobile consumers, The present invention provides a wiring harness cost calculation method using a modular BOM capable of calculating the cost by item number and option quickly and accurately.

According to another aspect of the present invention, there is provided a method of calculating a wiring harness cost using a modular BOM, the method comprising: extracting information on all connected materials by tracing a circuit path in a manufacturing drawing of a wiring harness; And generates the modular BOM by using the generated modular BOM to calculate the cost for each material and the cost for each option.

The effect of the wiring harness cost calculation method using the modular BOM of the present invention having the above configuration is as follows.

First, since the present invention uses a modular BOM, the cost can be calculated quickly and accurately according to part numbers and options regardless of the number of part numbers.

Second, the modular BOM can be used to judge the stock production of each option. As a result, it is possible to plan the manufacturing strategy of the assemble to order type by avoiding the existing make-stock stock method, Can be greatly increased.

Third, if the applicable options are changed, price information can be checked first in the production of a new part number product, so that the price of a new part number can be judged beforehand, and it can be used as reference data for manufacturing management.

Fourth, since the modular BOM is used to modify the modular BOM when the parts are changed, the changed cost can be calculated in real time without changing the drawings.

Fifth, customized mass production of automobile wiring harness has become a very advanced invention because it is possible to establish a manufacturing strategy of assembled production type by utilizing a modular BOM.

1 is a conceptual diagram of a cost calculation method according to part numbers for a wiring harness of a conventional automobile,
2 is a conceptual diagram of a modular BOM costing method for a wiring harness of an automobile according to the present invention,
3 is an example of a manufacturing drawing of a wiring harness,
4 shows an example of the basic configuration shown in the manufacturing drawing of the wiring harness and the modular BOM in the basic configuration of the wiring harness,
5 is an example of a modular BOM of the embodiment of the present invention,
6 is an example of the arrangement of the modular BOM according to the embodiment of the present invention,
FIG. 7 illustrates an example of the option-specific drawing generated through the inversion of the modular BOM of the embodiment of the present invention,
8 is an example of an option cost calculation screen generated through the modular BOM of the embodiment of the present invention,
9 is an example of a cost calculation screen for each part number generated through the modular BOM of the embodiment of the present invention,
10 is a flow chart of the wiring harness cost calculation method of the present invention,
11 is a flowchart of the circuit path extracting step of the wiring harness cost calculating method of the present invention,
12 is a flowchart of a material modular BOM generation step of the wiring harness cost calculation method of the present invention,
13 is a flowchart of the material cost calculating step of the wiring harness cost calculating method of the present invention,
Fig. 14 is a flowchart of the processing cost and cost calculation step of the wiring harness cost calculation method of the present invention,
15 is a flowchart of a modularized cost list generation step of the wiring harness cost calculation method of the present invention.

Hereinafter, the configuration of the wiring harness cost calculation method using the modular BOM of the present invention will be described in detail with reference to the drawings.

It is to be noted, however, that the disclosed drawings are provided as examples for allowing a person skilled in the art to sufficiently convey the spirit of the present invention. Therefore, the present invention is not limited to the following drawings, but may be embodied in other embodiments.

In addition, unless otherwise defined, the terms used in the description of the present invention have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. In the following description and the accompanying drawings, A detailed description of known functions and configurations that may be unnecessarily blurred is omitted.

2 is a conceptual diagram of a modular BOM costing method for a wiring harness of an automobile according to the present invention.

The conventional cost calculation method according to the above-described part number by reference to FIG. 1 is such that n number of part number degrees corresponding to the number of options are generated from the manufacturing drawings, n pieces of BOMs are generated for each part number based on n number of generated part numbers, Since the cost of each n part is calculated, a large number of part numbers are generated according to the increase of the consumer demand and the option, and the time for data processing is increased.

On the other hand, in the cost calculation method using the modular BOM of the present invention, the path of the circuit is tracked in the manufacturing drawing of the wiring harness, the material information is extracted by using the logic option combination logic in all the connected materials, To generate a modular BOM.

And, by using the generated modular BOM, it is possible to calculate the cost by part number, calculate the cost according to the option, and generate the drawing according to the option. If the part number is n, the cost calculation by n part numbers, And n option-specific drawings can be generated.

Therefore, in the cost calculation method of the present invention for performing the cost calculation as described above, cost estimates of all part numbers can be performed within a short time regardless of the number of part numbers.

Fig. 3 is an example of a manufacturing drawing of a wiring harness, and Fig. 4 is an example of a modular BOM extracted and generated from a manufacturing drawing of a wiring harness.

Fig. 3 is a drawing of the wiring harness. When the wiring harness product of the automobile is developed in a plane, as shown in the figure, the wire harness product has a web-like net structure. All the wires and the related materials are connected to each other One product.

Therefore, it is necessary to be able to know how the respective materials are connected to which circuits so that the options of the circuits can be combined to create a combination option of the materials, and a method of generating a modular BOM from such manufacturing drawings will be described.

Unlike the modular BOM of the present invention, in which the menu packing BOM is present in each product number, there is only one integrally. At this time, layout connection information is essential for generating a modular BOM.

Referring to FIG. 4, the illustrated circuit is a circuit for some components included in the manufacturing diagram shown in FIG. 3, with the A option shown in the upper part being connerter 1 and circuit 1, the B option being connected to connecter 2 and circuit 2 (STD option) is circuit 1, circuit 2, and connector 3, the table of parts (Pat number table) referenced in design contains option information that wire may be present. In other words, the part number 2 (PN2) on the lower left side is only the B option when referring to the parts table, and the part number 2 (PN2) of the menu pecifying BOM on the lower right side is Connector 2, Circuit 2, bundle 2 and connector 3 And part number 3 (PN3) of the menu peculiarizing BOM as the same principle consists of Connector 1, Circuit 1, bundle 1 and connector 3.

At this time, since the connector 1 includes only the circuit 1 due to the central cross tape, the option of the presence of the connector 1 can also be determined as A.

Therefore, in the modular BOM of the present invention, connector 3 must exist in at least one of curcuit 1 of option A and circuit 2 of option B, so that it becomes an A + B option by applying the or logical expression. In the case of cross tape, bundle 1, bundle 2, and bundle 3 are all present, taping can be performed. Therefore, it is indicated that the A * B option is applied by the AND logic expression. Therefore, the modular BOM shown on the lower right side of the drawing can be automatically generated from the manufacturing drawing of the wiring harness with reference to the part number table provided in the harness design.

For example, as shown in FIG. 5, a modular BOM can be created that displays options, categories, installation locations, and circuits for each material belonging to the wiring harness, and has a common category of options.

In addition, as shown in FIG. 6, the modular BOM of the embodiment of the present invention can be sorted according to the options, for example, to sort the options according to the options, and the materials allocated to the respective options can be grasped.

Also, as shown in FIG. 7, when the modular BOM is reversed, it becomes possible to make detailed drawings for each option. An example of the drawing shows a drawing for each material based on the option BZ3.

In addition, the cost calculation can be performed for each item based on the modular BOM created as described above.

Since the conventional cost calculation method utilizes the menu peculiarization BOM, as described above, the data processing time for each part number is increased in order to calculate the cost as described above, and thus it takes a lot of time to calculate the cost.

However, since the modular BOM of the present invention is a BOM generated by giving an option to all the materials, the cost for each option can be calculated very quickly. This is because if the price of each option is known, it is possible to calculate the cost quickly depending on whether the option is applied or not.

In addition, it is possible to quickly calculate the cost of each option so that it can predict the cost of the new part which is not currently produced but can help to establish a strategic manufacturing plan. FIG. 8 shows the cost for each option calculated using the above-described modular BOM, and FIG. 9 shows the cost for each part.

Meanwhile, when the design of the modular BOM of the present invention is changed, it is necessary to calculate the cost by regenerating the BOM of the corresponding part number after reflecting the changed design on the manufacturing drawing. However, You only have to modify the option information of the BOM, so you can apply the changes automatically for all part numbers.

Hereinafter, the wiring harness cost calculation method of the present invention having the above-described configuration will be described in more detail.

10 is a flow chart of the wiring harness cost calculation method of the present invention.

Referring to the drawings, a wiring harness cost calculation method of the present invention includes a physical path design step S1, a circuit path extraction step S2, a circuit information extraction step S3 for each section, a material information extraction step S4 for each section A modular cost list generation step S9, a production information application step S7, a material cost calculation step S7, a material cost calculation step S7, a processing cost and cost calculation step S8, S10), a cost estimation step S11 for each option, and a cost estimation step S12 for each part number.

Hereinafter, the configuration of each step of the wiring harness cost calculation method of the present invention configured as described above will be described in more detail.

The physical path designing step S1 is a step of designing and preparing the manufacturing drawing of the wiring harness as described with reference to Fig. 3 described above. In this step, the designed wiring harness manufacturing drawing is prepared.

FIG. 11 is a flowchart of the circuit path extracting step (S2). When the manufacturing drawing of the wiring harness is designed and prepared in the step S1, a circuit basic option is applied in the manufacturing drawing (S201) A routing date of the circuit is generated (S202), and a path of the circuit is searched (S203).

At this time, it is determined whether there is an option section on the route of the searched circuit (S204). If the option section exists, the routing data of the circuit is additionally generated in S205. Here, when additional routing data is generated, it is linked with existing options by a logical product.

However, if it is determined in step S204 that there is no option section, it is checked whether the logical expression of the option is valid (S206). As a result of the check, if the logical expression of the option is valid, it is determined that the wire is currently used and an item is added to the wire BOM (S207). However, if it is determined in step S 206 that the logical expression of the option is not valid, it is determined that the option is not a currently used wire, and no item is added to the wire BOM (S 208).

As described above, when the circuit path is extracted in step S2, the wire modular BOM is generated for the currently used wire (S5), and circuit information for each section is extracted from the manufacturing drawing (S3).

FIG. 12 is a flow chart of a step S6 of generating a material modular BOM. When circuit information is extracted for each section in step S3, option information of circuits for each section is collected (S601) (S602), and assigns an option to the material (S603).

When the material information of each section is extracted through the step S4 of extracting the material information in the step S 1 of the physical path designing step S 1, the extracted material information of the section is generated in the step S 6 of the material modular BOM, The material information applied to each section is loaded (S604), an option processing method is set for each material type (S605), and an option is assigned to the material (S606).

Fig. 13 is a flowchart of a material cost calculation step (S7) of the wiring harness cost calculation method of the present invention. First, information on the wire material, production timing, and wire length of the wire modular BOM generated in step S5 is stored in a wire database The price of the wire is calculated according to the information of the wire material, the production time, and the wire length stored in the database (S701).

In addition, it is judged whether the kind of the module BOM of the material module BOM generated in the step S6, the time of purchase and the information of the purchasing company are loaded and whether the material is an introduction material (702) The type of part, the time of purchase, and the information of the purchaser are stored in the database, and the price of the material is calculated according to the type of the stored parts, the time of purchase, and information of the purchaser (S703).

Fig. 14 is a flow chart of the machining cost and cost calculation step S8 of the wiring harness cost calculation method of the present invention, in which the wire price and the price of the material calculated in the material cost calculation step S7 are stored in the cost process database, According to the wire price and the material price stored in the process database, the processing cost and the required cost for each process are calculated according to the process to which each material is applied (S801).

FIG. 15 is a flowchart of a modularized cost list generation step (S9) of the wiring harness cost calculation method of the present invention, in which the information on the processing cost and the required cost for each process calculated in the step S8 is stored in each option (S901). If the option is an option used in the corresponding part number, it is transmitted to the cost estimation step S12 for each part number if the option is used for the part number, It is reflected in the quotation, and the option is excluded unless it is an option used in the part number.

Thereafter, the cost for each option stored in the modularized cost list generating step S9 is stored in the part number database and applied to the production information (S10), the cost for each part number is estimated in the cost estimate step S12, In the list generating step S9, the option-specific cost is estimated in the option cost estimating step S11 according to the saved option-specific cost.

Therefore, by the wiring harness cost calculation method using the modular BOM according to the present invention, it is possible to quickly and accurately calculate the cost for each part number and option regardless of the number of part numbers, It is possible to judge the production amount and accordingly, it is possible to plan the manufacturing strategy of the assemble to order type by avoiding the conventional make-to-stock method, thereby greatly increasing the manufacturing efficiency.

Also, if the applied option is changed, the price information can be confirmed first in the production of the new part number product, so that the price of the new part number can be judged beforehand, so that it can be used as reference data in the manufacturing management.

In addition, since the modular BOM can be used to modify the modular BOM, it is possible to calculate the changed cost in real time without changing the drawing.

As described above, the wiring harness cost calculation method using the modular BOM of the present invention has been described with reference to the drawings. However, these embodiments are illustrative and the scope of right of the present invention is not limited thereto. The scope of the present invention will be defined in accordance with the matters set forth in the claims, including the embodiments.

Claims

A method of calculating a cost of a wiring harness of an automobile,
In the manufacturing drawing of the wiring harness, the path of the circuit is traced to extract the information of the connected material,
Generates a modular BOM by allocating option information on the material to the extracted material information,
And calculating the cost for each material and the cost for each option using the generated modular BOM.

The method according to claim 1, wherein the wiring harness cost calculation method comprises:
A physical path design step S1 for designing and preparing a manufacturing drawing of the wiring harness;
A circuit path extracting step (S2) of extracting a circuit path from the manufacturing drawing of the wiring harness;
A circuit information extracting step (S3) for each section for extracting circuit information for each section of the circuit path extracted in the circuit path extracting step (S2);
A step S4 of extracting material information for each section of the circuit path on the manufacturing drawing prepared in the physical path planning step S1;
A wire modular BOM generating step (S5) of generating a wire modular BOM according to the circuit path extracted in the circuit path extracting step (S2);
A material modular BOM generation step (S6) of generating a material modular BOM according to the section information extracted in the step of extracting the material information for each section (S4) and the circuit information for each section extracted from the section circuit information; And calculating a wiring harness cost of the automobile.

3. The method of claim 2,
A material cost calculating step of calculating a material ratio of the wire according to the wire modular BOM generated in the wire modular BOM generating step S5 and calculating a material cost of the material according to the material modular BOM generated in the material modular BOM generating step S6 (S7);
And calculating a wiring harness cost of the automobile.

The method of claim 3,
A machining cost and an expense calculating step (S8) for calculating a machining cost and an expense according to each step of the material in accordance with the material cost calculated in the material cost calculating step (S7);
And calculating a wiring harness cost of the automobile.

5. The method according to claim 4, further comprising: a modularized cost list generation step (S9) in which the processing cost and cost calculated for each process calculated in the processing cost and cost calculation step (S8) are stored in a database for each option; And calculating a wiring harness cost of the automobile.

The method according to claim 5, further comprising: a cost estimate step (S11) for each option, in which the cost of each option is estimated according to the processing cost and the required expense for each option stored in the modularized cost list generation step (S9); And calculating a wiring harness cost of the automobile.

6. The method according to claim 5, further comprising: a production information application step (S10) of applying the information on the machining cost and the required expenses stored in the modularized cost list generation step (S9) to production information; And
A cost estimate step S12 for each part number for estimating the cost by the part number for the option used in the part number in the production information application step S10; And calculating a wiring harness cost of the automobile.

A storage medium containing a program for a wiring harness cost calculation method of a vehicle according to any one of claims 1 to 7.