JPH04281554A - Cost estimation system - Google Patents

Abstract

PURPOSE:To unnecessitate the constitution expansion of a model or a device by using a production plan expansion result, and to improve an estimating accuracy by collating an estimated cost with an actual cost. CONSTITUTION:As for a cost estimation processing 1, a cost estimating means 11 estimates a cost by pricing a unit price by using the production plan expansion result of a production plan expansion result file 2, and referring to the parts unit price and machining cost of a parts unit price and machining cost file 3, a cost collating means 12 collates the estimated cost with the actual cost of an actual cost file 4, and a cost registering means 13 registers the estimated cost in an estimated cost file 5 when the collated result is within a permissible range.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a cost estimation method,
In particular, it relates to cost estimation methods used for cost management on a project-by-project, station-by-station, and equipment-by-device basis, such as in exchanges.

0002

[Prior Art] Conventionally, in the cost estimation method of exchanges, etc.,
Apart from the production plan, the person in charge examines the station model for cost control (hereinafter simply referred to as the model) or the necessary parts for the equipment and registers them each time to develop the configuration.
The cost of a model or device was estimated by assigning a unit price to each part. For this reason, the only way to verify the accuracy of estimated costs was for the person in charge to check the configuration details of each model or device one by one.

0003

[Problems to be Solved by the Invention] In the conventional cost estimation method described above, cost estimation was performed completely unrelated to the production plan, and comparison with actual costs was not performed, resulting in the following drawbacks: There is. (1) It takes a large amount of man-hours to investigate, register, and deploy the necessary parts for a model or device. (2) It takes time to estimate costs when parts prices are changed every six months, making it impossible to provide model or device costs in a timely manner. (3) When estimating costs for each project, it is necessary to develop a model or equipment configuration similar to that in the production plan, which results in wasted work and
Adjustments according to the manufacturing request destination, etc. are not reflected and the estimate accuracy does not improve. (4) The accuracy of estimated costs cannot be verified in relation to actual costs.

[0004] In view of the above-mentioned points, an object of the present invention is to eliminate the need for model or equipment configuration development by using the production plan development results, and to improve the accuracy of estimation by comparing estimated costs with actual costs. The objective is to provide a cost estimation method based on

[0005]

[Means for Solving the Problems] The cost estimating method of the present invention includes a cost estimating means for estimating costs by assigning unit prices using the results of production plan development, and an actual cost estimation method that estimates costs by this cost estimating means. It has a cost comparison means for comparing the cost with the cost, and a cost registration means for registering the estimated cost if the comparison result by the cost comparison means is within an allowable range.

[0006]

[Operation] In the cost estimation method of the present invention, the cost estimating means performs unit pricing and estimates costs using the production plan development results, and the cost matching means matches the estimated cost estimated by the cost estimating means with the actual cost. However, the cost registration means registers the estimated cost if the verification result by the cost verification means is within the allowable range.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a cost estimation method according to an embodiment of the present invention. The cost estimation method of this embodiment includes a cost estimation process 1, a production plan development result file 2, a parts unit price/processing cost file 3, an actual cost file 4, an estimated cost file 5, a console 6, and a printer 7. Its main parts are composed of:

[0009] The cost estimation process 1 includes the cost estimation means 11.
, cost verification means 12 , and cost registration means 13 .

Referring to FIG. 2, the estimation process for each device in the cost estimation process 1 includes a step 21 of assigning a unit price to the production plan development result, a step 22 of cost estimation, a step 23 of outputting information on unset unit prices for parts, and a step 23 of outputting information on unset unit prices for parts. It consists of a step of comparing with the cost price 24, a step of determining whether the estimated cost is correct or not, and a step of registering the estimated cost 26.

As shown in FIG. 3, for example, the production plan expansion result file 2 stores a production plan expansion result 32 as a result of configuration expansion of a production plan input model 31 input in the production plan.

The part unit price/processing cost file 3 stores, for example, as shown in FIG. 3, a part unit price 33 consisting of a part name and unit price, and a processing cost 34 consisting of an apparatus name and cost.

The actual cost file 4 stores actual costs 36 for each device, as shown in FIG. 3, for example.

The estimated cost file 5 stores estimated costs 35 for each model and device, as shown in FIG. 3, for example.

Next, the operation of the cost estimation method of this embodiment configured as described above will be explained with reference to a specific example shown in FIG.

First, in the cost estimation process 1, the cost estimation means 11 inputs the production plan development result 32 from the production plan development result file 2, and converts it into the parts unit price/processing cost file 3.
, and add the parts unit price 33 and processing costs 34 such as manufacturing man-hours for each device (step 21), and add them up to estimate the cost per device (step 22). At this time, the cost estimating means 11 outputs the estimated cost 35 to the console 6 and also outputs a cost structure list to the printer 7. Furthermore, for parts for which the part unit price 33 is not set in the part unit price/processing cost file 3, the cost estimating means 11 outputs part unit price unset information to the console 6 (
Step 23).

Next, in the cost estimation process 1, the cost comparison means 12 refers to the actual cost file 4, compares the estimated cost 35 with the past actual cost 36, and compares the estimated cost 35 with the past actual cost 36. Estimated cost 35 where the difference between estimated cost 35 and actual cost 36 exceeds ±10%)
, mark it as such on console 6 (
Step 24).

The person in charge displays the estimated cost 35 with a sign indicating that it exceeds the allowable range on the console 6, the part unit price unset information output on the console 6, and the cost component list output on the printer 7. If the verification results are negative, the console 6 instructs the cost estimation process 1 that the estimated cost 35 is incorrect.

The cost estimation process 1 judges the instruction (step 25), and if the instruction indicates that the estimated cost 35 is incorrect, returns control to step 21 and repeats steps 21 to 24 in order to redo the estimate. repeat.

On the other hand, if the verification results are satisfactory, the person in charge instructs the cost estimation process 1 from the console 6 that the estimated cost 35 is correct.

The cost estimation process 1 judges the instruction (step 25), and if the instruction indicates that the estimated cost 35 is correct, the cost registration means 13 registers the estimated cost 35 in the estimated cost file 5 (step 26), the process ends.

In the cost estimation process 1, the above-described estimation process for each device is repeated to calculate the estimated cost 35 of the entire model or the entire project, and register it in the estimated cost file 5.

For example, in the specific example shown in FIG. 3, when the parts unit price 33 and processing cost 34 are added to the production plan development result 32 and the cost for each device is accumulated, the estimated cost 3
5 is 1,500 yen for device A and 2,000 yen for device B. At this time, for part b,
Since no part unit price is set in the parts unit price/processing cost file 3, unit price unset information is output to the console 6.

Next, the estimated cost 35 and actual cost 36 are compared. As a result, for equipment A, the actual cost is 3
6 is 2,000 yen, and the estimated cost 35 is within the allowable range (
Since the difference with actual cost 36 exceeds (within ±10%), a sign indicating that the tolerance is exceeded is attached.

[0025]

[Effects of the Invention] As explained above, the present invention has the following effects by utilizing the results of production plan development and comparing estimated costs with actual costs. (1) The number of man-hours required for research and configuration development for registering models or devices when estimating costs is eliminated, and waste due to double configuration development processing with production planning is eliminated. (2) The man-hours required for cost estimation are reduced and the work is done faster, allowing for timely provision of costs. (3) The accuracy of the estimated cost is improved by comparing it with the actual cost, and the scope for the person in charge to verify the configuration of the model or device is narrowed. (4) All costs for each project in the production plan can be grasped, making it an effective document for budget management.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a cost estimation method according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the cost estimation process in FIG. 1;

FIG. 3 is a diagram showing specific examples of various data in the cost estimation method of this embodiment.

[Explanation of symbols]

1. Cost estimation process 2 Production plan development result file 3 Parts unit price/processing cost file 4 Actual cost file 5 Estimated cost file 6 Console 7 Printer 11 Cost estimation means 12 Cost verification method 13 Cost registration method 31 Production planning input model 32 Production plan development results 33 Parts unit price 34 Processing cost 35 Estimated cost 36 Actual cost

Claims (1)

[Claims] [Claim 1] A cost estimating means for estimating costs by assigning unit prices using the results of production plan development, a cost matching means for comparing the estimated costs estimated by this cost estimating means with actual costs, and this cost matching. A cost estimation method comprising a cost registration means for registering an estimated cost if the verification result by the means is within an allowable range.