WO2013175869A1

WO2013175869A1 - Estimation device and estimation method

Info

Publication number: WO2013175869A1
Application number: PCT/JP2013/060048
Authority: WO
Inventors: 浩太郎石田; 政信石井
Original assignee: ゼロフォー株式会社
Priority date: 2012-05-23
Filing date: 2013-04-02
Publication date: 2013-11-28
Also published as: JP2013246487A

Abstract

Provided are an estimation device for estimating component costs from a design drawing and an estimation method using the estimation device. This estimation device (10) includes a receiving section (13) for receiving a design drawing (10a), a display section (14) for displaying the design drawing (10a) received by the receiving section (13), an operation input section (15) for inputting a trace operation for the design drawing (10a) displayed on the display section (14), a drawing generation section (16) for generating a drawing used to estimate component costs on the basis of the trace operation input into the operation input section (15), and an estimation section (17) for estimating the component costs on the basis of the drawing generated by the drawing generation section (16).

Description

Estimating apparatus and estimating method

The present invention relates to an estimation device that estimates the cost of a part from a design drawing, and an estimation method using the estimation device.

Generally, a mechanical device is composed of many parts such as a sheet metal part, a cutting part, and a pressed part. In developing a product of such a machine device, the cost of components constituting the machine device is taken into consideration in order to reduce the manufacturing cost. For this purpose, it is necessary to estimate the cost of each part constituting the mechanical device in the design stage, which is the initial stage of product development.

In order to estimate the cost of a part as described above, what kind of machining process is required and what kind of machine tool is used to obtain the part shape drawn on the part design drawing It is necessary to judge whether there is. Therefore, there is a problem that it is impossible to estimate the cost of parts unless the engineer has specialized knowledge about processing. In addition, since the cost estimation of the parts depends on the expertise and experience of the engineer, there is a problem that the cost estimation varies depending on the engineer who performs the cost estimation.

As a prior art for such a problem, for example, a cost estimation device disclosed in Patent Document 1 can be cited. In this cost estimation apparatus, information necessary for estimation calculation is extracted and acquired from two-dimensional CAD (computer aided design) data of a part to be cost estimated. If the two-dimensional CAD data includes dimension values, notes, etc., material information, processing machine information, secondary processing information, etc. are extracted from the information. The cost estimation apparatus disclosed in Patent Document 1 automatically performs cost estimation of parts based on the extracted information.

In the cost estimation apparatus disclosed in Patent Document 1, it is necessary to input CAD data of parts to the cost estimation apparatus. However, there are many cases where the design drawing of the part is not given by the CAD data of the electronic part. For example, the design drawing of a part is given as a design drawing printed on a paper medium or computerized image data such as a JPEG file or a BMP file. In such a case, it is not possible to estimate the cost of a part using the cost estimation device disclosed in Patent Document 1.

JP-A-9-160945

An object of the present invention is to provide an estimation device that estimates the cost of a part from a design drawing, and an estimation method using the estimation device.

Such an object is achieved by the present invention described below.
The estimation apparatus of the present invention is an estimation apparatus for performing cost estimation of parts from a design drawing,
A receiving unit for receiving the design drawing;
A display unit for displaying the design drawing received by the receiving unit;
An operation input unit for inputting a trace operation for the design drawing displayed on the display unit;
A drawing generation unit that generates a drawing for executing cost estimation of the component based on the trace operation input to the operation input unit;
And an estimation unit that performs cost estimation of the component based on the drawing generated by the drawing generation unit.

Thus, even a person who does not have specialized knowledge about machining can estimate the cost of a part by executing a trace operation on the design drawing displayed on the display unit. In addition, since it is possible to acquire estimation information such as the shape and circumference of the component from the generated drawing of the component, it is possible to accurately estimate the cost of the component. Furthermore, since the cost estimation is automatically executed, the cost estimation does not vary.

In the estimation apparatus of the present invention, the drawing generation unit acquires a trace point group from the trace operation, and normalizes and integrates the vector of the trace point group, thereby acquiring a line segment constituting the drawing. It is preferable to generate the drawing.

Thus, even if the input is performed by a trace operation using a mouse, keyboard, touch panel, etc., a line segment without blurring can be obtained, and an accurate design drawing can be generated. As a result, it is possible to estimate the cost of parts more accurately.

In the estimation apparatus of the present invention, it is preferable that the vector of the trace point group is obtained by connecting each of the trace point groups in time series of the trace operation.

Thus, a vector corresponding to the trace operation can be obtained from the trace point group. As a result, an accurate line segment without blur can be acquired.

In the estimation apparatus of the present invention, it is preferable that the drawing generation unit generates the drawing including the three-dimensional shape data of the part based on the trace operation input to the operation input unit.

This makes it possible to estimate the welding cost of the part, the volume and capacity of the part, etc. from the three-dimensional shape data of the part. As a result, it is possible to estimate the cost of parts more accurately.

In the estimation device according to the present invention, the part is any one of a sheet metal part, a cutting part, a press part, a welded part, and a resin part.

Thus, the cost of sheet metal parts manufactured by adding punching or bending, cutting parts manufactured by a cutting machine, press parts manufactured by a press machine, welded parts manufactured by welding, and resin parts An estimate can be made.

The estimation method of the present invention is an estimation method for estimating the cost of a component from a design drawing using an estimation device for estimating the cost of the component from the design drawing,
A receiving step of receiving the design drawing using a receiving unit of the estimation device;
A display step of displaying the design drawing received by the receiving unit using a display unit of the estimating device;
Using the operation input unit of the estimation device, an operation input step of inputting a trace operation for the design drawing displayed on the display unit;
A drawing generation step of generating a drawing for performing cost estimation of the part based on the trace operation input to the operation input unit, using a drawing generation unit of the estimation device;
An estimation step of performing cost estimation of the component based on the drawing generated by the drawing generation unit using an estimation unit of the estimation device.

Thereby, even a person who does not have specialized knowledge about the machining process can execute the cost estimation of the parts by executing the trace operation on the design drawing displayed on the display unit.

FIG. 1 is a block diagram showing an estimation apparatus according to an embodiment of the present invention. FIG. 2 is an example of a design drawing received by the estimation apparatus of FIG. FIG. 3 is a diagram showing an example of a display image displayed on the display unit of the estimation apparatus of FIG. FIG. 4 is a flowchart showing processing executed by the estimation apparatus of FIG. FIG. 5 is a flowchart showing processing in the graphic input process. FIG. 6 is a flowchart showing vector normalization and integration processing. FIG. 7 is a diagram illustrating an example of generated three-dimensional shape data. FIG. 8 is a flowchart showing processing in the estimation information setting step. FIG. 9 is a flowchart showing processing in the estimation process.

Hereinafter, preferred embodiments of the estimation apparatus and the estimation method of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an estimation apparatus according to an embodiment of the present invention. FIG. 2 is an example of a design drawing received by the estimation apparatus of FIG. FIG. 3 is a diagram showing an example of a display image displayed on the display unit of the estimation apparatus of FIG. FIG. 4 is a flowchart showing processing executed by the estimation apparatus of FIG. FIG. 5 is a flowchart showing processing in the graphic input process. FIG. 6 is a flowchart showing vector normalization and integration processing. FIG. 7 is a diagram illustrating an example of generated three-dimensional shape data. FIG. 8 is a flowchart showing processing in the estimation information setting step. FIG. 9 is a flowchart showing processing in the estimation process. In the following description, the upper side of FIG. 6 will be described as “upper”, the lower side as “lower”, the right side as “right”, and the left side as “left”.

The estimation apparatus 10 shown in FIG. 1 displays the received design drawing 10a (see FIG. 2) of the component on the display unit 14, and estimates the cost of the component based on the trace operation for the design drawing 10a displayed on the display unit 14. Has the function to execute. In addition, a component here means the components manufactured with machine tools, such as a sheet metal component, a cutting component, a press component, a welding component, a resin component, for example.

The estimation device 10 is designed from the control unit 11 that controls the estimation device 10, the estimation parameter DB (Data Base) 12 for storing parameters for cost estimation of the components, and the design of the components from the network 20 or the external device 30. A receiving unit 13 that receives FIG. 10a (see FIG. 2), a display unit 14 that displays the design drawing 10a received by the receiving unit 13, and a trace operation for inputting the design drawing 10a displayed on the display unit 14 Based on the operation input unit 15, the drawing generation unit 16 that generates a drawing for executing cost estimation of the component based on the trace operation input to the operation input unit 15, and the component based on the drawing generated by the drawing generation unit 16 An estimation unit 17 for executing cost estimation, an estimated component DB 18 for storing estimated component data, and a data bus And a 9. Each component of the estimation device 10 is connected to the data bus 19, and various data and various instructions are exchanged via the data bus 19.

The control unit 11 has a function of controlling the estimation device 10. The control unit 11 includes a ROM (Read Only Memory) storing a control program for controlling each unit of the estimation device 10 and a RAM (Randam Access Memory) for temporarily storing data calculated by the estimation device 10. And a CPU (Central Processing Unit) that executes a control program. When the control program is executed by the CPU, the estimation device 10 is controlled according to the control program, and various processes described in detail below are executed.

The parameter DB 12 for estimation stores parameters for executing cost estimation of parts. In the estimation parameter DB 12, for example, parameters such as processing setup costs, machining costs, incidental processing costs, etc., for estimating the manufacturing cost 202 (see FIG. 9), estimates of the purchase cost 203 (see FIG. 9) Parameters for executing material costs, subcontracting costs, general-purpose product prices, sales management costs, parameters for executing manufacturing overhead estimation for parts storage, discount rate for each customer, discount according to the number of orders A condition coefficient such as a discount rate corresponding to the rate and delivery date is stored. The parameters stored in the estimation parameter DB 12 are not necessarily limited to this. Any parameter can be stored in the estimation parameter DB 12 as long as it is a parameter necessary for cost estimation of the component.

The receiving unit 13 has a function of receiving the component design drawing 10 a from the network 20 or the external device 30. When the part design drawing 10a is a design drawing printed on a paper medium, the receiving unit 13 scans the design drawing 10a printed on the paper medium like OCR (Optical Character Reader), for example. The design drawing 10a may be received, and the component design drawing 10a may be stored in a storage device (not shown) of the estimation device 10 such as a RAM of the control unit 11 or an HD (Hard Disk).

When the component design drawing 10 a is an electronic image file such as a JPEG file or a BMP file, the receiving unit 13 includes a USB (Universal Serial Bus) port, a LAN port, and the like on the external device 30 or the network 20. By interfacing with the server, the image file may be received, and the part design drawing 10a may be stored in the storage device (not shown) of the estimation device 10 such as the RAM of the control unit 11 or the HD.

FIG. 2 is an example of the design drawing 10 a received by the receiving unit 13. This design drawing 10a is a design drawing of a sheet metal part, but the present invention is not limited to this. For example, the design drawing 10a may be a design drawing of a cutting part, a resin part, a press part, a welding part, or the like.

A design drawing such as the design drawing 10a generally includes a drawing area 11a for describing drawings such as a front view, a top view, etc. of a part, a sectional view, a development view, etc., and predetermined manufacturing information. Cell region 12a. The cell region 12a is composed of a plurality of cells (substantially rectangular regions defined by horizontal and vertical lines), and the number, size, and position of each cell are arbitrary.

The manufacturing information here is, for example, the name of the part, the material information of the part, the material information such as the plate thickness, the tapping instruction in the part, the processing information such as deburring and bonding, the name of the ordering party and the ordering party, Order information such as department, order date, delivery date, drawing scale, and standard information on parts and materials, surface treatment such as painting and plating, heat treatment, etc. (eg JIS standard number of Japanese Industrial Standards, American Standards Association) ANSI, Chinese national standard GB standard, etc.). The manufacturing information is not necessarily limited to character information, and manufacturing information that includes processing information, graphics, dimension lines that represent dimensions, dimension values, and the like are also included in the manufacturing information.

Further, the receiving unit 13 may receive not only the part design drawing 10a but also other data from a server on the network 20 or an external device 30 such as a flash memory or a printer. As a result, for example, it is possible to receive data from the network 20 or the external device 30 and update or add parameters stored in the estimation parameter DB 12.

The display unit 14 has a function of displaying the design drawing 10a received by the receiving unit 13. FIG. 3 is a diagram illustrating an example of the display image 130 displayed on the display unit 14. The display image 130 includes at least a drawing area 131 for performing a trace operation on the design drawing 10a displayed by the user, an attribute selection area 132 for selecting an attribute of the trace operation performed by the user, and necessary for estimation. And an estimate information selection area 133 for setting the estimate information 201 (see FIG. 4). In the drawing area 131, at least the design drawing 10a received by the receiving unit 13 is displayed. Further, in the drawing area 131, in addition to the design drawing 10a received by the receiving unit 13, straight lines are arranged in the vertical direction and the horizontal direction at regular intervals, and the vertical line and the horizontal line are orthogonal to each other. In addition, it is preferable to configure grid lines. Further, the user can set the interval between the grid lines and the number of grid lines. As a result, the user can visually grasp the size of the design drawing of the part currently being traced.

Further, the user can select an attribute of the trace operation performed on the drawing area 131 by selecting an arbitrary icon in the attribute selection area 132 via the operation input unit 15. The attributes here include drawing a straight line, drawing a curve with a constant radius of curvature, drawing a figure such as a predetermined circle or polygon, deleting an arbitrary line segment or figure, and the like. A figure such as a circle or a polygon is used to represent a machining hole or a screw hole of a part.

Further, when an arbitrary icon in the estimation information selection area 133 is selected, a screen for setting various estimation information 201 is displayed on the display unit 14. The user can set the estimate information 201 by operating a screen for setting various estimate information 201 displayed on the display unit 14 via the operation input unit 15. In the display image 130 of FIG. 3, the estimation information selection area 133 is composed of a size selection icon, a material selection icon, a plate thickness selection icon, a surface treatment selection icon, a number selection icon, a delivery date selection icon, and a work process selection icon. However, the present invention is not limited to this. The estimated information selection area 133 may include any icon for setting estimated information.

The operation input unit 15 has a function of inputting a trace operation for the design drawing 10 a displayed on the display unit 14. The operation input unit 15 interfaces with an input device such as a keyboard, a mouse, and a touch panel, for example, and inputs a trace operation by the user to the estimation device 10. As shown in FIG. 3, the user traces the design drawing 10 a displayed in the drawing area 131 of the display unit 14 using an input device such as a keyboard, a mouse, and a touch panel while referring to the display unit 14. Perform the operation. The trace operation here refers to the design drawing 10a displayed in the drawing area 131 of the display unit 14, that is, the design drawing of a part such as a six-face drawing such as a top view and a side view, and a development view (trace is performed). ) An operation.

Taking a trace operation using a mouse as an input device as an example, the user places a cursor at an arbitrary point on the graphic of the design drawing 10a displayed in the drawing area 131 of the display unit 14 and clicks. Furthermore, the user moves the cursor so as to trace the graphic of the design drawing 10a while keeping the click, and after the trace is finished, the click is finished. By such a drag operation, the user performs a trace operation on the design drawing 10 a displayed on the display unit 14. Such a trace operation is temporarily stored in the RAM of the control unit 11.

Further, the operation input unit 15 may input an operation other than the above-described trace operation, for example, an operation for selecting an icon of the attribute selection area 132 or the estimation information selection area 133 to the estimation apparatus 10. The user can perform general operations such as a click operation using a mouse and a typing operation using a keyboard by the operation input unit 15.

The drawing generation unit 16 has a function of generating a drawing for executing cost estimation of parts based on the trace operation input to the operation input unit 15. The drawing generation unit 16 generates a trace point group between the start point and the end point from the trace operation start point, end point, and drag operation trajectory input to the operation input unit 15 temporarily stored in the RAM of the control unit 11. get. The trace point group is numbered in the order of the acquired time series, and the trace point group vector can be acquired by connecting the trace points in this numerical order. This vector of trace point groups corresponds to the movement vector of the trace operation. The trace point group acquired here is temporarily stored in the RAM of the control unit 11 and is referred to whenever necessary.

Further, as will be described later with reference to FIGS. 5 and 6, the drawing generation unit 16 acquires a vector of the acquired trace point group, and normalizes and integrates the vector to obtain the drawing. It is possible to acquire a line segment to be configured. The line segment here includes a straight line and a curve having a constant curvature radius. The drawing generation unit 16 acquires graphic information 200 (see FIG. 4) such as the peripheral length of the component, the number of screw holes, and the welding length from the generated drawing. The graphic information 200 acquired here is temporarily stored in the RAM of the control unit 11 and is referred to whenever necessary.

The drawing generation unit 16 compares the generated drawing with the graphic of the design drawing 10 a displayed on the display unit 14, and matches the generated drawing with the graphic of the design drawing 10 a displayed on the display unit 14. You may adjust as follows. As a result, the generated drawing and the figure of the design drawing 10a displayed on the display unit 14 can be exactly matched.

The drawing generation unit 16 can generate three-dimensional shape data from the generated drawing (two-dimensional drawing data) as will be described later with reference to FIG. FIG. 7A shows an example of three-dimensional shape data generation when the drawing generated by the drawing generation unit 16 is a bending sectional view. FIG. 7B shows an example of three-dimensional shape data generation when the drawing generated by the drawing generation unit 16 is a six-face drawing for bending. FIG. 7C is an example of three-dimensional shape data generation when the drawing generated by the drawing generation unit 16 is a developed view. FIG. 7D shows an example of three-dimensional shape data generation when the drawing generated by the drawing generation unit 16 is a sectional view of a lathe part. As described above, the drawing generation unit 16 generates the three-dimensional shape data, so that the information such as the welded part of the part, the volume and capacity of the part can be acquired as the graphic information 200 from the three-dimensional shape data. .

The estimation unit 17 has a function of performing cost estimation of parts based on the graphic generated by the drawing generation unit 16. The estimation unit 17 includes a part design drawing obtained from the graphic generated by the drawing generation unit 16, graphic information 200 such as the peripheral length of the part, the number of screw holes, and the welding length, estimation information 201 set by the user, and for estimation By referring to parameters stored in the parameter DB 12, etc., cost estimation of parts is executed.

The estimated component DB 18 is a DB for storing at least the component design drawing 10 a received by the receiving unit 13, the drawing generated by the drawing generation unit 16, and the cost estimation estimated by the estimation unit 17. Data stored in the estimated parts DB 18 is transmitted to an output unit (not shown) via the data bus 19 and output to an external device 30 such as a flash memory or a printer or a device such as a server on the network 20. The

Each unit and each DB of the estimation device 10 described above are connected to a data bus 19, and various data and various instructions are exchanged via the data bus 19.

The estimation device 10 described above is not particularly limited, but is preferably provided in a desktop computer, a PDA (Personal Digital Assistant), a smartphone, a netbook, a tablet computer, or the like.

Next, a process (hereinafter simply referred to as “process”) performed by the estimation apparatus 10 will be described with reference to FIG. In FIG. 4, solid arrows indicate the flow of processing. On the other hand, broken arrows represent the flow of data.

[1] Blueprint receiving step s110
First, in the start step s100, processing is started by an instruction from the CPU of the control unit 11. Next, the process proceeds to the design drawing receiving step s110. In the design drawing receiving step s110, the design drawing 10a of the part is received using the receiving unit 13 described above. The display image 130 including the received design drawing 10a of the part is displayed on the display unit 14 described above.

[2] Figure input step s120
Next, the process proceeds to a figure input step s120. In the graphic input step s120, a trace operation for the design drawing 10a displayed on the display unit 14 is input via the operation input unit 15. Thereafter, using the drawing generation unit 16, a drawing for executing the cost estimation of the parts is generated based on the trace operation input to the operation input unit 15. Further, the processing acquires information such as the peripheral length of the component, the number of screw holes, and the weld length from the generated drawing. These pieces of information are temporarily stored in the RAM of the control unit 11 as graphic information 200, and are referred to whenever they are required in a later process.

FIG. 5 is a flowchart showing the processing of the figure input step s120. First, in s121, a figure input step s120 is started. Next, a trace point group is acquired by the drawing generation unit 16 in s122. As described above, the trace point group is numbered in the order of the acquired time series. Next, the process proceeds to s123. In s123, the overlapping point of the trace point group acquired in s122 is deleted. As described above, by deleting the overlapping points of the trace point group, the number of vectors of the trace point group to be processed in a later process can be reduced, and the processing speed can be improved. Next, the process proceeds to s124. In s124, the trace point group vector is obtained by connecting the trace points in the order of the numbers assigned to the trace point group. Next, the process proceeds to s125. In s125, normalization and integration of the acquired vector is performed.

FIG. 6 is a flowchart showing vector normalization and integration processing. First, in s1251, s125 is started. Next, the process proceeds to s1252. In s1252, the angle of each vector is calculated from the analysis of the vertical and horizontal components of each vector. In FIG. 6, the upper side is expressed as 0 °, the right side as 90 °, the lower side as 180 °, and the left side as 270 °. Next, a process transfers to s1253. In s1253, each vector is normalized. The normalization here means that each vector is classified into a plurality of categories by a predetermined method based on the number assigned to each vector in chronological order and the calculated angle of each vector. This means resetting the vector angle, start point position, end point position, and the like.

In the example of FIG. 6, each vector is based on the calculated angle of each vector, three categories (category 1 of a vector having an angle of 90 °, category 2 of a vector having an angle of 135 °, and an angle of 90 °. The vector is classified into category 3). In each category, the angle of each vector is reset to the same value, and the start position of the vector is reset to match the end position of the next vector. In addition, the end position of the last vector in a certain category matches the start position of the first vector in the next category. In this example, the vector category is classified into 45 ° increments, but the present invention is not limited to this. For example, it may be classified into categories of 15 ° increments, or classification may be performed with finer or coarser increments.

Next, the process proceeds to s1254. In s1254, each normalized vector is integrated. That is, a plurality of vectors included in each category are made into one vector. By integrating the vectors, it is possible to obtain line segments constituting the design drawing. Here, the procedure for acquiring a straight line as a line segment has been described, but a curve (arc) having a constant curvature radius may be acquired by changing the normalization and integration rules. Next, the process proceeds to s1255. In s1255, s125 ends.

Referring back to FIG. 5, the process proceeds to s126. In s126, a drawing of the part (two-dimensional graphic data) is generated by acquiring a line segment based on the vector acquired in s125. Next, the process proceeds to s127. In s127, the graphic input process s120 ends.

[3] Three-dimensional shape generation step s130
Next, the process proceeds to a three-dimensional shape generation step s130. In the three-dimensional shape generation step s130, as shown in FIG. 7, a three-dimensional shape is generated based on the drawing (two-dimensional graphic data) generated in the graphic input step s120. By generating such a three-dimensional shape, it is possible to acquire information such as the welded part of the part and the volume / capacity of the part. These pieces of information are temporarily stored in the RAM of the control unit 11 as graphic information 200, and are referred to whenever they are required in a later process.

FIG. 7A shows a procedure for generating a three-dimensional shape when the drawing (two-dimensional drawing data) generated by the drawing generation unit 16 is a bending sectional view of a part. In addition to the generated drawing, the drawing generation unit 16 can generate a three-dimensional shape of the component by setting the depth length of the component. The depth length of the part may be set by the user via the operation input unit 15, or a predetermined value may be set.

FIG. 7B shows a procedure for generating a three-dimensional shape when the drawing (two-dimensional drawing data) generated by the drawing generation unit 16 is a six-face drawing for bending a part. The user designates, via the operation input unit 15, whether each figure included in the generated drawing corresponds to a top view, a bottom view, a right side view, a left side view, a front view, or a rear view, respectively. . Thereafter, the user performs surface synthesis of each figure in the generated drawing. The term “surface composition” as used herein refers to designating which figure end corresponds to the end of each figure. By executing such surface synthesis, the drawing generation unit 16 can generate a three-dimensional shape of the part.

FIG. 7C shows an example of three-dimensional shape data generation when the drawing of the part generated by the drawing generation unit 16 is a developed view. When a bend line exists in the generated drawing, the drawing generation unit 16 generates a three-dimensional shape based on the bend line.

FIG. 7D shows an example of three-dimensional shape data generation when the drawing of the part generated by the drawing generation unit 16 is a sectional view of a lathe part. When the rotation center line exists in the generated drawing or when the rotation center line is designated by the user, the drawing generation unit 16 generates a three-dimensional shape based on the rotation center line.

[4] Estimated information setting step s140
Next, the process proceeds to an estimation information setting step s140. In the estimate information setting step s140, the estimate information 201 is set based on the user's operation on the estimate information selection area 133 displayed on the display unit. When the user selects an arbitrary icon constituting the estimated information selection area 133 of the display unit 14, a screen for setting various estimated information 201 is displayed on the display unit 14. The user can set the estimated information 201 by selecting a screen for setting various estimated information 201 displayed on the display unit 14.

FIG. 8 is a flowchart showing the process of the estimation information setting step s140. In s141, the estimation information setting process s140 is started. Next, in s142, the size of the part (scale of the drawing) is set. The size of the component (the scale of the drawing) may be set by the user via the operation input unit 15, or may be set based on the interval between the grid lines displayed in the drawing area 131 of the display image 130. Also good. Next, in s143, the material of the component is set. The material of the parts here is, for example, iron, steel, stainless steel, aluminum, brass, beryllium copper or the like. Next, in s144, the plate thickness of the component is set. Next, in s145, the surface treatment of the part is set. Here, the surface treatment of the parts includes plating treatment, painting treatment, and the like. Next, in s146, the order quantity of parts is set. Next, in s147, a delivery date for manufacturing the part is set. Next, in s148, a work process for manufacturing the component is set. The work process here refers to, for example, setting of machine tools used for manufacturing parts such as laser processing machines, turret punch presses, bending machines, NC machining centers, general-purpose lathes, setting of man-hours and time for processing, and the like. Next, in s149, the estimated information setting step s140 ends. Note that the processing from s142 to s148 does not necessarily have to be executed in the order described above, and may be executed in any order. Further, the estimation information setting step s140 may include a process for setting any other estimation information 201.

[5] Estimating step s150
Next, the process proceeds to the estimation step s150. In the estimation step s150, the estimation unit 17 performs cost estimation of the parts. The cost estimation of a part is made up of a part design drawing, part information, graphic information 200 such as the number of screw holes, welding length, estimation information 201 set by the user, parameters stored in the estimation parameter DB 12, and the like. It is executed by referring.

FIG. 9 is a flowchart showing processing in the estimation step s150. First, in s1501, the estimation process s150 is started. Next, in s1502, calculation of material cost is performed. The material cost is calculated by referring to the graphic information 200, the size, material and plate thickness of the parts set in the estimation information setting step s140, and the cost of each material stored in the estimation parameter DB 12.

Next, in s1503, the machining setup cost is calculated. The processing setup cost is a cost generated in a preparation process necessary before actual machining such as material transportation and machine tool preparation. The machining setup cost is calculated by referring to the graphic information 200, the work process set in the estimation information setting step s140, and the cost of each machining setup process stored in the estimation parameter DB 12.

Next, in s1504, the machining cost is calculated. The machining cost is a cost generated when driving a machine tool such as a laser beam machine. The machining cost is calculated by referring to the graphic information 200, the work process set in the estimation information setting step s140, and the machining costs stored in the estimation parameter DB 12.

Next, in s1505, incidental machining costs are calculated. The incidental processing costs are costs incurred when performing operations necessary in addition to the above-described machining, for example, thread cutting, degreasing operations, deburring, and packing operations. The incidental machining cost is calculated by referring to the graphic information 200, the work process set in the estimation information setting step s140, and the cost of each incidental machining stored in the estimation parameter DB 12.

Next, in s1506, the outsourcing cost is calculated. Outsourcing costs are costs that are incurred when a part of the manufacturing process required for manufacturing a part is requested to an outside contractor. The subcontracting cost is calculated by referring to the work process set in the estimation information setting step s140 and the cost of each subcontracting stored in the estimation parameter DB 12.

Next, the purchase cost is calculated in s1507. The purchase cost is, for example, a cost that is incurred when purchasing a necessary general-purpose product when it is necessary to attach a general-purpose product such as a nut or a screw to a part. The purchase cost is calculated by referring to the graphic information 200, the work process set in the estimation information setting step s140, and the cost of each general-purpose product stored in the estimation parameter DB 12.

Next, in s1508, manufacturing overhead is calculated. The manufacturing overhead is a cost incurred when managing sales of parts or storing parts. The manufacturing overhead is calculated by referring to the size and delivery date of the parts set in the estimation information setting step s140 and the parameters for calculating the manufacturing overhead stored in the estimation parameter DB 12.

Next, in s1509, part estimation is executed. The total of the calculated processing setup cost, machining cost, and incidental processing cost is the manufacturing cost 202. The total of the calculated material cost, outsourcing cost, and purchase cost is the purchase cost 203. A value obtained by multiplying the sum of the manufacturing cost 202, the purchase cost 203, and the manufacturing overhead by a condition coefficient is the estimated amount of the part. Here, the condition coefficient is a discount rate for each customer stored in the estimation parameter DB 12, a discount rate according to the order quantity, a discount rate according to the delivery date, and the like. Next, in s1510, the estimation process s150 ends.

Note that the processing from s1502 to s1508 does not necessarily have to be executed in the order described above, and may be executed in any order. The estimation step s150 may include any other estimation process.

[6] Estimated parts registration step s160
Next, the process proceeds to the estimated part registration step s160. In the estimated component registration step s160, at least the design drawing 10a of the component received by the receiving unit 13, the drawing generated by the drawing generation unit 16, and the cost estimate estimated in the estimation step s150 are stored in the estimated component DB 18. Further, the estimated part DB 18 may store graphic information 200, estimated information 201, manufacturing cost 202, or purchase cost 203 of each part. Next, in the end step s170, the process ends.

As mentioned above, although the estimation apparatus and the estimation method of the present invention have been described based on the illustrated embodiment, the present invention is not limited to this, and the configuration of each part is an arbitrary configuration having the same function. Can be substituted. In addition, any other component may be added to the present invention. In addition, the present invention may be a combination of any two or more configurations (features) of the embodiment.

According to the present invention, even a person who does not have specialized knowledge about processing can estimate the cost of a part by executing a trace operation on the design drawing displayed on the display unit. In addition, since it is possible to acquire estimation information such as the shape and circumference of the component from the generated drawing of the component, it is possible to accurately estimate the cost of the component. Furthermore, since the cost estimation is automatically executed, the cost estimation does not vary. Therefore, it has industrial applicability.

Claims

An estimation device for estimating the cost of a part from a design drawing,
A receiving unit for receiving the design drawing;
A display unit for displaying the design drawing received by the receiving unit;
An operation input unit for inputting a trace operation for the design drawing displayed on the display unit;
A drawing generation unit that generates a drawing for executing cost estimation of the component based on the trace operation input to the operation input unit;
An estimation apparatus comprising: an estimation unit that performs cost estimation of the component based on the drawing generated by the drawing generation unit.
The drawing generation unit acquires a line segment constituting the drawing by acquiring a trace point group from the trace operation, normalizing and integrating the vector of the trace point group, and generating the drawing. Item 2. The estimation device according to item 1.
The estimation device according to claim 2, wherein the vector of the trace point group is obtained by connecting the trace point groups in time series of the trace operation.
4. The estimation device according to claim 1, wherein the drawing generation unit generates the drawing including three-dimensional shape data of the part based on the trace operation input to the operation input unit.
The estimation device according to any one of claims 1 to 4, wherein the component is any one of a sheet metal component, a cutting component, a pressed component, a welded component, and a resin component.
An estimation method for estimating the cost of a component from a design drawing using an estimation device for estimating the cost of the component from the design drawing,
A receiving step of receiving the design drawing using a receiving unit of the estimating device;
A display step of displaying the design drawing received by the receiving unit using a display unit of the estimating device;
Using the operation input unit of the estimation device, an operation input step of inputting a trace operation for the design drawing displayed on the display unit;
A drawing generation step of generating a drawing for executing cost estimation of the part based on the trace operation input to the operation input unit, using a drawing generation unit of the estimation device;
An estimation method comprising: an estimation step of performing cost estimation of the component based on the drawing generated by the drawing generation unit using an estimation unit of the estimation device.