Online quotation method and system for 3D printing parts

Abstract

The invention relates to the technical field of intelligent manufacturing and digital service, and discloses an online quotation method and system for 3D printing parts. An online quotation method for 3D printing parts comprises the following steps that S1, order information is obtained, feature parameters are extracted from the order information, and the feature parameters comprise geometric parameters, process parameters and material attribute parameters of to-be-printed parts; s2, the material consumption cost and the printing time cost of the to-be-printed part are calculated according to the feature parameters, and the total cost is obtained by integrating the material consumption cost and the printing time cost; and S3, calculating according to the total cost and a preset gross profit rate to obtain a final quotation. The method can also adapt to different part characteristics and printing requirements, and effectively solves the problems of low efficiency and insufficient standardization of a traditional quotation mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent manufacturing and digital service, and particularly relates to an online pricing method and system for 3D printed parts. BACKGROUND

[0002] In recent years, 3D printing technology has been widely used in industrial manufacturing, medical treatment, education and other fields. Its characteristics of on-demand customization and rapid prototyping significantly reduce the production cost of small-batch complex parts. However, due to the influence of multiple factors such as material consumption, printing time, equipment type and process parameters, the traditional manual pricing method is inefficient and difficult to standardize.

[0003] At present, the existing 3D printing pricing system mostly uses fixed unit price or simple volume calculation model, and does not fully consider the dynamic coupling relationship between part geometric characteristics, process parameters and material properties, resulting in large pricing deviation. In addition, the existing system lacks automatic markup processing for large-size parts, multi-color printing and other special scenarios, and is difficult to meet the precise pricing demand. SUMMARY

[0004] The purpose of the present application is to provide an online pricing method and system for 3D printed parts, which solves the above technical problems:

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] An online pricing method for 3D printed parts, comprising the following steps:

[0007] S1, obtaining order information and extracting feature parameters from the order information, the feature parameters including geometric parameters, process parameters and material attribute parameters of the part to be printed;

[0008] S2, calculating the material consumption cost and printing time cost of the part to be printed according to the feature parameters, and obtaining the total cost by integrating the material consumption cost and the printing time cost;

[0009] S3, calculating the final price according to the total cost and the preset gross profit margin.

[0010] As a further technical solution, the geometric parameters include the volume of the part, the surface area of the part and the three-dimensional size of the part; the process parameters include the filling rate, the wall thickness layer number, the layer thickness and the color; and the material attributes include the material unit price, the material density, the material printing time unit price and the gross profit margin.

[0011] As a further technical solution, the process of calculating the material consumption cost of the part to be printed is:

[0012] According to the surface area of the part, the set wall thickness layer number and the standard line width, the outer wall material volume is calculated; if the calculation result is not less than the total volume of the part, the total volume of the part is directly taken as the outer wall material volume;

[0013] The total volume of the part is subtracted from the outer wall volume to obtain the volume that needs to be internally filled; according to the volume that needs to be internally filled, the filling material volume is converted according to the preset filling rate;

[0014] According to the outer wall material volume, the filling material volume, the preset support loss rate and the material unit price, the material consumption cost is calculated and obtained.

[0015] As a further technical solution, the process of calculating the outer wall material volume according to the surface area of the part, the set wall thickness layer number and the standard line width is: through the formula The outer wall material volume is calculated and obtained ; wherein, the surface area of the part, the wall thickness layer number, the outer wall line width.

[0016] As a further technical solution, the process of calculating and obtaining the material consumption cost according to the outer wall material volume, the filling material volume, the preset support loss rate and the material unit price includes:

[0017] ;

[0018] ;

[0019] Among them, the outer wall material volume; the total volume of the part; the preset filling rate; the support loss rate; the total volume of the consumables; the material density; the material unit price;

[0020] The material consumption cost is calculated and obtained through the above formulas (1)~(2) .

[0021] As a further technical solution, the process of calculating the printing time cost of the part to be printed includes:

[0022] ;

[0023] Among them, the total volume of the consumables required for printing the part; the standard printing efficiency; a hollowing coefficient of the part, the hollowing coefficient being equal to a ratio of a volume of the part to a volume of a three-dimensional space occupied by the part; a layer thickness coefficient of the part, the layer thickness coefficient being equal to a ratio of a reference layer thickness to an actual layer thickness; a printer comprehensive unit time cost, the printer comprehensive unit time cost being equal to a sum of a unit time depreciation cost of the printer and a unit time printer electricity cost;

[0024] a printing time cost of the part is obtained by formula (3) .

[0025] As a further technical solution, the calculation process of the final quotation includes:

[0026] a final quotation is obtained by formula ; ;

[0027] wherein, a preset gross profit margin; a part large size coefficient; a part color correlation coefficient.

[0028] An online quotation system for 3D printed parts includes:

[0029] a parameter input module: for receiving a part three-dimensional model uploaded by a user and automatically analyzing geometric parameters thereof, including volume, surface area and three-dimensional dimensions;

[0030] a process configuration interface: for providing an adjustable parameter input interface of filling rate, wall thickness, layer thickness and color options;

[0031] a material database: for storing attribute parameters of different materials, including density, unit price, applicable printer types and color correlation cost coefficients;

[0032] a cost calculation module, for calculating material consumption cost and printing time cost of a part to be printed;

[0033] a quotation generation module, for generating total cost by integrating material cost and time cost,

[0034] an output module, for visually displaying the quotation result to the user.

[0035] As a further technical solution, the cost calculation module includes a material consumption calculation unit and a printing time calculation unit;

[0036] the material consumption calculation unit is used to calculate total material consumption including support material loss and cost based on geometric parameters and process parameters of the part;

[0037] The printing time calculation unit is used for calculating the printing time cost according to the hollowness coefficient of the printed part, the layer thickness coefficient and the printer type.

[0038] The present application has the following advantages:

[0039] The present application realizes the precise and automatic evaluation of the 3D printing cost by constructing a dynamic coupling calculation model based on the geometric characteristics of the part, the process parameters and the material properties. The system automatically calculates the material consumption and the printing time cost by intelligently analyzing the three-dimensional model of the part, combining the process parameters and the material selection set by the user, and introducing multi-dimensional correction coefficients such as structural complexity, size effect and special process, which significantly improves the accuracy of the quotation. In addition, the present application can adapt to different part characteristics and printing requirements, effectively solving the problems of low efficiency and insufficient standardization of traditional quotation methods. BRIEF DESCRIPTION OF DRAWINGS

[0040] The present application will be further described below with reference to the accompanying drawings.

[0041] Figure 1 The flowchart of the online quotation method for the 3D printed part in the present application;

[0042] Figure 2 The framework diagram of the online quotation system for the 3D printed part in the present application. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0044] Please refer to Figure 1 The online quotation method for the 3D printed part shown in the figure comprises the following steps:

[0045] S1, obtaining order information and extracting feature parameters from the order information, the feature parameters including: geometric parameters, process parameters and material property parameters of the part to be printed; the geometric parameters including: the volume of the part, the surface area of the part and the three-dimensional size of the part; the process parameters including: the filling rate, the wall thickness layer number, the layer thickness and the color; the material properties including: the material unit price, the material density, the material printing time unit price and the gross profit rate.

[0046] S2, calculating the material consumption cost and the printing time cost of the part to be printed according to the feature parameters, and obtaining the total cost by integrating the material consumption cost and the printing time cost;

[0047] S3, calculate the final quotation according to the total cost and the preset gross profit rate, specifically refer to the formula: final quotation = total cost ÷ (1-gross profit rate).

[0048] Through the technical scheme, the embodiment provides an online quotation method for 3D printed parts. Specifically, first, the system intelligently analyzes order information and extracts three types of key feature parameters, including volume, surface area and three-dimensional size representing the geometric characteristics of the part, filling rate, wall thickness layer number, layer thickness and color options reflecting the manufacturing process requirements, and unit price, density, printing time unit price and gross profit rate reflecting the material characteristics. Then, based on the dynamic correlation between the parameters, the material consumption cost (considering the volume of the outer wall, the filling rate and the support loss) and the printing time cost (combined with the hollow degree, the layer thickness coefficient and the equipment type) are calculated respectively, and the total cost is generated by fusion. Finally, the total cost is converted into the final quotation combined with the preset gross profit rate. The method effectively solves the problems of low precision and low efficiency of traditional quotation methods by establishing a multi-dimensional coupling model of geometric characteristics, process parameters and material properties, and is particularly suitable for complex structure printing application scenarios, providing standardized technical support for the commercialization of 3D printing services.

[0049] The process of calculating the material consumption cost of the to-be-printed part is:

[0050] According to the surface area of the part, the set wall thickness layer number and the standard line width, the outer wall material volume is calculated; if the calculation result is not less than the total volume of the part, the total volume of the part is directly taken as the outer wall material volume. It should be noted that the outer wall refers to the contour structure of the outermost layer of the 3D printed part, which constitutes the external shape and surface quality of the part, and is composed of a plurality of layers of continuous printing paths, wrapped outside the filling structure. The standard line width refers to the default path width when the printing nozzle extrudes the material, which directly affects the printing accuracy, surface quality and structural strength.

[0051] Subtract the outer wall volume from the total volume of the part to obtain the volume that needs to be internally filled; according to the volume that needs to be internally filled, the filling material volume is calculated according to the preset filling rate;

[0052] According to the outer wall material volume, the filling material volume, the preset support loss rate and the material unit price, the material consumption cost is calculated. The support loss is a preset value (industry general 30%), which is used to compensate for the additional material consumption of the printing support structure.

[0053] Through the technical scheme, the embodiment provides a process for calculating the material consumption cost of the to-be-printed part.

[0054] The process of calculating the outer wall material volume according to the surface area of the part, the set wall thickness layer number and the standard line width is: through the formula Calculate the outer wall material volume ; wherein is the surface area of the part, is the number of wall thicknesses, is the line width of the outer wall. Through the above technical solution, the embodiment provides a process of calculating the volume of the outer wall material according to the surface area of the part, the set number of wall thicknesses, and the standard line width.

[0055] The process of calculating and obtaining the material consumption cost according to the volume of the outer wall material, the volume of the filling material, the preset support loss rate, and the material unit price includes:

[0056]

[0057] wherein, is the volume of the outer wall material; is the total volume of the part; is the preset filling rate; is the support loss rate; is the total volume of the consumables; is the material density; is the material unit price; is the effective material volume, and the support loss rate is used to compensate for the additional material of the printing support structure. The support loss rate is usually 30%. The total volume of the consumables = effective material volume × (1 + support loss rate). The material consumption cost is calculated and obtained by the above formulas (1) and (2) .

[0058] Through the above technical solution, the embodiment provides a process of calculating and obtaining the material consumption cost.

[0059] The process of calculating the printing time cost of the part to be printed includes:

[0060] After modification:

[0061] Before modification: (3); the printing time cost of the part is calculated and obtained by formula (3) .

[0062] wherein, is the total volume of the consumables required for printing the part, including the volume of the support material; is the standard printing efficiency, unit: volume / hour, representing the material consumption per unit time; is the hollow degree coefficient of the part, the hollow degree coefficient being equal to the ratio of the volume of the part to the volume of the three-dimensional space occupied by the part, between 0 and 1, the lower the hollow degree (solid structure), the greater the hollow degree coefficient, and the higher the printing efficiency; the higher the hollow degree (complex structure), the smaller the hollow degree coefficient, and the lower the efficiency; a layer thickness coefficient of the part, the layer thickness coefficient being equal to a ratio of a reference layer thickness to an actual layer thickness, the reference layer thickness being for example 0.2mm, if the actual layer thickness is 0.08mm, the printing time is 2.5 times of the 0.2mm layer thickness; a printer comprehensive unit time cost, the printer comprehensive unit time cost being equal to a sum of a unit time depreciation cost of the printer and a unit time printer electricity cost; the unit time depreciation cost can be obtained by dividing the printer price by the service life, and the unit time printer electricity cost can be obtained by multiplying the printer power by the electricity price, for example, 250W*1.2yuan / d=0.3yuan / hour. Through the above technical solution, the embodiment provides a calculation process of the printing time cost of the part to be printed.

[0063] The calculation process of the final offer includes:

[0064] The final offer is obtained by the formula

[0065] wherein, is a preset gross profit margin; is a part large size coefficient, when the three-dimensional maximum size (taking the maximum one of x / y / z) of the part is greater than a threshold (for example, 400mm), the part is defined as a large size part, and since the printing time of the large size part is long and the success rate is low, the unit price needs to be adjusted upward accordingly, according to the preset interval into which the three-dimensional maximum size of the large size part falls, a corresponding preset large size coefficient value is obtained. It should be noted that, if the part is not a large size part, by default, 1. is a part color correlation coefficient, is a correction parameter for adjusting the 3D printing offer, mainly reflecting the additional cost of different color materials. The standard reference value is 1.0, and is adjusted upward according to the color type. For example, if the single-color base color (black and white) is printed: if the single-color other color is printed: and the multi-color is printed: Through the above technical solution, the embodiment provides a calculation process of the final offer.

[0066] Referring to FIG. 1, an online offer system for 3D printed parts includes: Figure 2 A parameter input module is configured to receive a three-dimensional model of a part uploaded by a user and automatically analyze geometric parameters of the three-dimensional model, including volume, surface area, and three-dimensional size.

[0067] A process configuration interface is configured to provide an adjustable parameter input interface for a filling rate, a wall thickness, a layer thickness, and a color option.

[0068]

[0069] ​​​The material database is used to store attribute parameters of different materials, including density, unit price, applicable printer type, and color-related cost coefficient.

[0070] The cost calculation module is used to calculate material consumption cost and printing time cost of the part to be printed.

[0071] The quotation generation module is used to generate total cost by integrating material cost and time cost.

[0072] The output module is used to visually display the quotation result to the user.

[0073] The cost calculation module includes a material consumption calculation unit and a printing time calculation unit.

[0074] The material consumption calculation unit is used to calculate total material consumption including support material loss and cost based on geometric parameters and process parameters of the part.

[0075] The printing time calculation unit is used to calculate printing time cost according to the hollowing degree coefficient, layer thickness coefficient, and printer type of the printed part.

[0076] Through the above technical solution, the embodiment provides an online quotation system for 3D printed parts. The system accurately extracts geometric feature parameters of the part through three-dimensional model intelligent analysis technology, realizes accurate prediction of material consumption and printing time by combining process parameter dynamic coupling algorithm, and automatically associates material attributes and cost parameters relying on the intelligent matching mechanism of the material database, thereby constructing an end-to-end automated quotation solution. Compared with existing quotation methods, the system first adopts a cost modeling method based on actual geometric structure and physical characteristics of the part, breaking through the limitations of traditional simple volume pricing; secondly, a dynamic association model of multi-dimensional process parameters and material attributes is established to support real-time cost evaluation of a wide range of material systems and complex process combinations. The system is particularly good at handling industrial printing requirements with complex internal structure, special surface requirements, or customized process, and converts the traditional lengthy quotation process relying on human experience into an efficient and reliable digital process.

[0077] The above describes one embodiment of the present application in detail, but the content is only the preferred embodiment of the present application and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage of the present application.

Claims

1. An online quoting method for 3D printed parts, characterized in that, The method comprises the following steps: S1, obtaining order information and extracting feature parameters from the order information, the feature parameters comprising geometric parameters, process parameters and material attribute parameters of a part to be printed; S2, calculating material consumption cost and printing time cost of the part to be printed according to the feature parameters, and obtaining total cost by comprehensively considering the material consumption cost and the printing time cost; S3, calculating a final quotation according to the total cost and a preset gross profit margin.

2. The method of online quoting of 3D printed parts of claim 1, wherein, The geometric parameters comprise volume, surface area and three-dimensional size of the part; the process parameters comprise filling rate, wall thickness layer number, layer thickness and color; and the material attribute comprises material unit price, material density, material printing time unit price and gross profit margin.

3. The method of online quoting of 3D printed parts of claim 2, wherein, The process of calculating the material consumption cost of the part to be printed comprises: According to the surface area of the part, the set wall thickness layer number and the standard line width, the volume of the outer wall material is calculated; if the calculation result is not less than the total volume of the part, the total volume of the part is directly taken as the volume of the outer wall material; The total volume of the part is subtracted by the volume of the outer wall to obtain the volume of the internal filling; according to the volume of the internal filling, the volume of the filling material is converted according to the preset filling rate; The material consumption cost is calculated according to the volume of the outer wall material, the volume of the filling material, the preset support loss rate and the material unit price.

4. The method of online quoting of 3D printed parts of claim 3, wherein, According to the surface area of the part, the set wall thickness layer number and the standard line width, the process for calculating the volume of the outer wall material is: through the formula Calculate the volume of the outer wall material ; wherein, the surface area of the part, the wall thickness layer number, the outer wall line width.

5. The method of online quoting of 3D printed parts of claim 4, wherein, The process of calculating the material consumption cost according to the volume of the outer wall material, the volume of the filling material, the preset support loss rate and the material unit price comprises: ； ； wherein, is the volume of the outer wall material; is the total volume of the parts; is the preset fill rate; is the support loss rate; is the total volume of the consumables; is the material density; is the material unit price; The material consumption cost is calculated by the above formulas (1)~(2) .

6. The method of online quoting of 3D printed parts of claim 5, wherein, The process of calculating the printing time cost of the part to be printed comprises: ； wherein, is the total volume of consumables required to print the part; is the standard printing efficiency; is the part’s void fraction coefficient, which is equal to the ratio of the part’s volume to the volume of the three-dimensional space occupied by the part; is the part’s layer thickness coefficient, which is equal to the ratio of the reference layer thickness to the actual layer thickness; is the printer’s comprehensive unit time cost, which is equal to the sum of the printer’s unit time depreciation cost and the unit time printer electricity cost; The printing time cost of the part is obtained by formula (3) .

7. The method of online quoting of 3D printed parts of claim 6, wherein, The calculation process of the final quotation comprises: The final offer is calculated by the formula ;​ wherein, is a preset gross profit margin; is a part oversize coefficient; is a part color correlation coefficient.

8. An online quoting system for 3D printed parts, characterized in that, The system is used for executing the online quotation method of the 3D printed part according to any one of claims 1-7, and the system comprises: A parameter input module is configured to receive a three-dimensional model of a part uploaded by a user and automatically analyze geometric parameters of the three-dimensional model, including volume, surface area and three-dimensional size; A process configuration interface is configured to provide an adjustable parameter input interface for filling rate, wall thickness layer number, layer thickness and color options; A material database is configured to store attribute parameters of different materials, including density, unit price, applicable printer type and color-related cost coefficient; A cost calculation module is configured to calculate material consumption cost and printing time cost of a part to be printed; A quotation generation module is configured to generate total cost by comprehensively considering material cost and time cost, An output module is configured to visually display the quotation result to a user.

9. The online quoting system for 3D printed parts of claim 8, wherein, The cost calculation module comprises a material consumption calculation unit and a printing time calculation unit; The material consumption calculation unit is configured to calculate total material consumption including support material loss and cost based on geometric parameters and process parameters of a part; The printing time calculation unit is configured to calculate printing time cost according to the hollowing degree coefficient of a printed part, the layer thickness coefficient and the type of a printer.

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