A mold cost determination method, device, equipment, medium and product

Abstract

The application provides a mold cost determination method. The method obtains shape parameters of a mold, determines raw material cost and manufacturing cost of the mold according to the shape parameters, and then determines a proportion of a sum of the raw material cost and the manufacturing cost in the mold cost based on a cost estimation model, so as to determine the mold cost according to the raw material cost, the manufacturing cost and the proportion. Moreover, the cost of the mold is determined according to the shape of the mold, and the determined mold cost is more accurate.

Description

Technical Field

[0001] This application relates to the field of automobile manufacturing, and more particularly to a method, platform, equipment, computer-readable storage medium, and computer program product for determining mold costs. Background Technology

[0002] In industrial production, when pricing parts, the cost of the mold used to manufacture the part needs to be considered. The cost of the mold directly affects the production cost of the part manufactured using the mold.

[0003] In general, the method for determining the cost of a mold is relatively simple. For example, only the weight of the mold can be considered, and the cost of the mold can be determined based on the weight of the mold.

[0004] However, molds of the same weight can have significantly different actual costs due to differences in shape. This method is not accurate enough for determining mold costs and therefore cannot provide accurate data for part pricing. Therefore, the industry urgently needs an accurate method for determining mold costs. Summary of the Invention

[0005] This application provides a method for accurately determining mold costs. This application also provides apparatus, equipment, computer-readable storage media, and computer program products corresponding to the above method.

[0006] Firstly, this application provides a method for determining mold costs, the method comprising:

[0007] Obtain the shape parameters of the mold;

[0008] Based on the shape parameters of the mold, determine the raw material cost and manufacturing cost of the mold;

[0009] The proportion of the sum of the raw material cost and the manufacturing cost to the mold cost is determined based on the cost estimation model;

[0010] The mold cost is determined based on the raw material cost, the manufacturing cost, and the ratio.

[0011] In some possible implementations, the raw material cost includes at least one of the following: mold core cost, mold frame cost, ejector structure cost, and hot runner cost.

[0012] In some possible implementations, obtaining the shape parameters of the mold includes:

[0013] Obtain the orthographic projection area of ​​the part manufactured by the mold;

[0014] The shape parameters of the mold are obtained based on the orthographic projection area of ​​the part and a first proportionality coefficient. The first proportionality coefficient is the difference between the shape difference of the reference mold and the area difference of the reference part. The shape difference of the reference mold is the difference between the shape parameters of the first reference mold and the shape parameters of the second reference mold. The area difference of the reference part is the difference between the orthographic projection area of ​​the first reference part manufactured by the first reference mold and the orthographic projection area of ​​the second reference part manufactured by the second reference mold.

[0015] In some possible implementations, the shape parameters include part parameters produced according to the mold, mold core width, mold core height, mold frame width, mold frame length, and mold frame thickness.

[0016] In some possible implementations, determining the raw material cost of the mold based on its shape parameters includes:

[0017] The cost of the mold core is determined based on the mold core length, the mold core width, the mold core height, the mold core material density, and the unit price of the mold core material.

[0018] The cost of the mold frame is determined based on the mold frame length, mold frame width, mold frame thickness, mold core length, mold core width, mold core height, mold frame material density, and mold frame material unit price.

[0019] The cost of the ejector structure is determined based on the width of the mold frame, the length of the mold frame, the parameters of the ejector structure, the hollowing coefficient, the density of the ejector structure material, and the unit price of the ejector structure material.

[0020] The cost of the hot runner is determined based on the number of hot runners and the unit price of the hot runners.

[0021] In some possible implementations, determining the manufacturing cost of the mold based on its shape parameters includes:

[0022] The manufacturing unit price of the mold is obtained based on the part parameters, first coefficient, second coefficient, third coefficient, machine tool tie rod parameters, and machine tool coefficient.

[0023] The manufacturing cost of the mold is determined based on the manufacturing unit price, processing cycle, and initial cost.

[0024] In some possible implementations, determining the ratio of the sum of the raw material cost and the manufacturing cost to the mold cost based on a cost estimation model includes:

[0025] Obtain the orthographic projection area of ​​the mold;

[0026] Based on the projected area and the cost estimation model, determine the proportion of the sum of raw material cost and manufacturing cost to the mold cost;

[0027] The cost estimation model is used to obtain the proportional parameters of the mold based on the orthographic projection area of ​​the mold and a second proportional coefficient. The proportional parameters represent the proportion of the sum of the raw material cost and the manufacturing cost to the cost of the mold. The second proportional coefficient is the ratio of the proportional difference of the reference mold to the area difference of the reference mold. The proportional difference of the reference mold is the difference between the proportional parameters of the first reference mold and the proportional parameters of the second reference mold. The area difference of the reference mold is the difference between the orthographic projection area of ​​the first reference mold and the orthographic projection area of ​​the second reference mold.

[0028] In some possible implementations, the method further includes:

[0029] At least one of the starting cost, the hollowing-out coefficient, the first coefficient, the second coefficient, and the third coefficient is obtained through a normal distribution model.

[0030] Secondly, this application provides an apparatus for determining mold costs, the apparatus comprising:

[0031] The acquisition module is used to acquire the shape parameters of the mold;

[0032] The determination module is used to determine the raw material cost and manufacturing cost of the mold based on the shape parameters of the mold;

[0033] An estimation module is used to determine the proportion of the sum of the raw material cost and the manufacturing cost to the mold cost based on a cost estimation model.

[0034] The calculation module is used to determine the mold cost based on the raw material cost, the manufacturing cost, and the ratio.

[0035] In some possible implementations, the raw material cost includes at least one of the following: mold core cost, mold frame cost, ejector structure cost, and hot runner cost.

[0036] In some possible implementations, the acquisition module can be used to:

[0037] Obtain the orthographic projection area of ​​the part manufactured by the mold;

[0038] The shape parameters of the mold are obtained based on the orthographic projection area of ​​the part and a first proportionality coefficient. The first proportionality coefficient is the difference between the shape difference of the reference mold and the area difference of the reference part. The shape difference of the reference mold is the difference between the shape parameters of the first reference mold and the shape parameters of the second reference mold. The area difference of the reference part is the difference between the orthographic projection area of ​​the first reference part manufactured by the first reference mold and the orthographic projection area of ​​the second reference part manufactured by the second reference mold.

[0039] In some possible implementations, the shape parameters include part parameters produced according to the mold, mold core width, mold core height, mold frame width, mold frame length, and mold frame thickness.

[0040] In some possible implementations, the determining module can be used to:

[0041] The cost of the mold core is determined based on the mold core length, the mold core width, the mold core height, the mold core material density, and the unit price of the mold core material.

[0042] The cost of the mold frame is determined based on the mold frame length, mold frame width, mold frame thickness, mold core length, mold core width, mold core height, mold frame material density, and mold frame material unit price.

[0043] The cost of the ejector structure is determined based on the width of the mold frame, the length of the mold frame, the parameters of the ejector structure, the hollowing coefficient, the density of the ejector structure material, and the unit price of the ejector structure material.

[0044] The cost of the hot runner is determined based on the number of hot runners and the unit price of the hot runners.

[0045] In some possible implementations, the determining module can be used to:

[0046] The manufacturing unit price of the mold is obtained based on the part parameters, first coefficient, second coefficient, third coefficient, machine tool tie rod parameters, and machine tool coefficient.

[0047] The manufacturing cost of the mold is determined based on the manufacturing unit price, processing cycle, and initial cost.

[0048] In some possible implementations, the estimation module is specifically used for:

[0049] Obtain the orthographic projection area of ​​the mold;

[0050] Based on the projected area and the cost estimation model, determine the proportion of the sum of raw material cost and manufacturing cost to the mold cost;

[0051] The cost estimation model is used to obtain the proportional parameters of the mold based on the orthographic projection area of ​​the mold and a second proportional coefficient. The proportional parameters represent the proportion of the sum of the raw material cost and the manufacturing cost to the cost of the mold. The second proportional coefficient is the ratio of the proportional difference of the reference mold to the area difference of the reference mold. The proportional difference of the reference mold is the difference between the proportional parameters of the first reference mold and the proportional parameters of the second reference mold. The area difference of the reference mold is the difference between the orthographic projection area of ​​the first reference mold and the orthographic projection area of ​​the second reference mold.

[0052] Thirdly, this application provides an apparatus comprising a processor and a memory. The processor and the memory communicate with each other. The processor is configured to execute instructions stored in the memory to cause the apparatus to perform a method for determining mold costs as described in the first aspect or any implementation thereof.

[0053] Fourthly, this application provides a computer-readable storage medium storing instructions that instruct a device to perform the method for determining mold costs as described in the first aspect or any implementation thereof.

[0054] Fifthly, this application provides a computer program product containing instructions that, when run on a device, cause the device to execute the method for determining mold costs described in the first aspect or any implementation thereof.

[0055] Based on the implementation methods provided in the above aspects, this application can be further combined to provide more implementation methods.

[0056] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0057] This application provides a method for determining mold cost. The method obtains the shape parameters of the mold, determines the raw material cost and manufacturing cost based on these parameters, and then determines the ratio of the sum of the raw material cost and manufacturing cost to the total mold cost based on a cost estimation model. This allows for the determination of the mold cost based on the raw material cost, manufacturing cost, and the ratio. On one hand, this method comprehensively considers the raw material cost, manufacturing cost, and other costs of the mold, enabling the acquisition of an accurate mold cost. On the other hand, this method determines the mold cost based on its shape, avoiding cost variations due to different shapes caused by relying solely on weight. The shape of the mold reflects more information about it, thus resulting in a more accurate determined mold cost. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 A flowchart illustrating a method for determining mold cost provided in an embodiment of this application;

[0060] Figure 2 A flowchart illustrating a method for obtaining shape parameters of a mold, provided in an embodiment of this application;

[0061] Figure 3 A three-view drawing of a mold provided for an embodiment of this application;

[0062] Figure 4 A flowchart illustrating a method for obtaining undetermined coefficients provided in an embodiment of this application;

[0063] Figure 5 This is a schematic diagram of the architecture of a mold cost determination device provided in an embodiment of this application. Detailed Implementation

[0064] The solutions in the embodiments provided in this application will now be described with reference to the accompanying drawings.

[0065] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application.

[0066] To facilitate understanding of the technical solution of this application, some technical terms involved in this application will be introduced below.

[0067] In industrial production, many parts are manufactured using injection molds. Therefore, when pricing parts, the production cost of the injection mold must be considered. Typically, the cost of an injection mold is determined by its weight. However, this method essentially only considers the raw material cost of the mold body, without taking into account manufacturing costs and the cost of hot runners. Therefore, the determined mold cost is not accurate enough.

[0068] In view of this, this application provides an accurate method for determining mold costs. This method is executed by a processing device, which is a device with data processing capabilities, and can be either a terminal or a server. Specifically, the processing device acquires the shape parameters of the mold, determines the raw material cost and manufacturing cost of the mold based on the shape parameters, and then determines the proportion of the sum of the raw material cost and manufacturing cost to the total mold cost based on a cost estimation model. Thus, the mold cost is determined based on the raw material cost, manufacturing cost, and the proportion. In this way, by comprehensively considering the raw material cost, manufacturing cost, and other costs of the mold, an accurate mold cost is obtained, thereby providing an accurate reference for parts pricing.

[0069] Next, the method for determining mold cost provided in the embodiments of this application will be described in conjunction with the accompanying drawings.

[0070] See Figure 1 The flowchart shown illustrates a method for determining mold costs, which includes the following steps:

[0071] S102: The processing equipment obtains the shape parameters of the mold.

[0072] The mold includes components such as the mold core, mold frame, ejector structure, and hot runner. Therefore, the corresponding shape parameters of the mold include the width, length, and height of the mold core; the width, length, and thickness of the mold frame; the height of the ejector structure; and the width, length, and height of the parts produced using the mold. The width, length, and height of the parts can be obtained directly.

[0073] like Figure 2 The flowchart shown illustrates the process by which the processing equipment acquires the shape parameters of the mold, specifically including the following steps:

[0074] S202: The processing equipment obtains the projected area of ​​the part manufactured by the mold.

[0075] The projected area of ​​a part can be obtained directly, specifically including the part's length L. p The width W of the part p ,as well as

[0076] S204: The processing equipment obtains the shape parameters of the mold based on the orthographic projection area of ​​the part and the first proportional coefficient.

[0077] like Figure 3 The front view, left view, and top view of the mold shown are L. c Indicates the length of the mold core, L f This represents the length of the module frame. Where L... c =L p +2E f L f =L c +2L fy .

[0078] Since the length and width dimensions of the mold base and mold frame are similar in actual production, the width of the mold core can be W. c =W p +2E f The width W of the mold frame f =W c +2W fy .

[0079] Therefore, the mold core width W cn satisfy:

[0080] W cn =(W pn +2E fn )×N (1)

[0081] Among them, W cn W represents a certain model. c Parameter; W c1 This indicates that W represents the first part. c Parameters, such as the core width of the screw plug; W c2 This indicates that W represents the second part in Table 1. c Parameters, such as the mold core width of the inner panel of the side door.

[0082] E fn The scaling factor can be obtained by linear interpolation based on the orthographic projection area of ​​the part and the scaling factor, which can be obtained from the first reference mold and the second reference mold.

[0083] The proportionality constant k1 satisfies:

[0084] k1=(E f2 -E f1 ) / (S2-S1) (2)

[0085] Among them, E f2 E represents the difference between the width of the mold core and the width of the part in the second reference mold. f1 S1 represents the difference between the width of the mold core and the width of the part in the first reference mold; S2 represents the orthographic projection area of ​​the second reference part generated using the second reference mold; and S1 represents the orthographic projection area of ​​the first reference part generated using the first reference mold. The second reference mold is a mold for a standard large part, and the first reference mold is a mold for a standard small part. This yields E. f The proportionality coefficient k1.

[0086] Therefore, the difference E between the mold core width and the part width can be obtained based on the scaling factor. fn .

[0087] E fn =E f1+(S n ×N-S1)×k1 (3)

[0088] Among them, S n This represents the projected area of ​​the nth part produced using this mold.

[0089] Similarly, the length of the mold core satisfies:

[0090] L cn =L pn +2E fn (4)

[0091] The height of the mold core can also be obtained based on the same principle; the difference T between the height of the mold core and the height of the part is... c It can be obtained based on the proportional coefficient k2 of the reference mold.

[0092] The proportionality constant k2 satisfies:

[0093] k2=(T c2 -T c1 ) / (S2-S1) (5)

[0094] The difference T between the mold core height and the part height c satisfy:

[0095] T cn =H c1 +(S n ×N-S1)×k2 (6)

[0096] The core height meets the following requirements:

[0097] H cn =H pn +2T cn (7)

[0098] In this way, the shape parameter W of the mold core can be obtained. cn L cn and H cn .

[0099] Similarly, the width of the mold frame can be obtained based on the same principle; the difference W between the width of the mold frame and the width of the mold core is... fy It can be obtained based on the proportional coefficient k3 of the reference mold.

[0100] The proportionality constant k3 satisfies:

[0101] k3=(W fy2 -W fy1 ) / (W c2 -W c1 (8)

[0102] Among them, Wfy2 W is the width of the mold frame of the second reference mold. fy1 W is the width of the mold frame of the first reference mold. c2 W is the core width of the second reference mold. c1 The width of the mold core is the first reference mold.

[0103] The difference between the mold frame width and the mold core width is 2W. fy W fy satisfy:

[0104] W fy =W fy1 +(W cn -W c1 )×k3 (9)

[0105] The width of the mold frame must meet the following requirements:

[0106] W fn =W cn +2W fy (10)

[0107] The difference L between the mold frame length and the mold core length fy The proportionality coefficient k4 is:

[0108] k4=(L fy2 -L fy1 ) / (L c2 -L c1 (11)

[0109] Among them, L fy2 L is the width of the mold frame of the second reference mold. fy1 L is the width of the mold frame of the first reference mold. c2 L is the core width of the second reference mold. c1 The width of the mold core is the first reference mold.

[0110] The difference between the mold frame length and the mold core length is 2L. fy L fy satisfy:

[0111] L fy =L fy1 +(L cn -L c1 )×k4 (12)

[0112] The length of the mold frame satisfies:

[0113] L fn =L cn +2L fy (13)

[0114] The thickness of the mold frame includes the thickness T at the bottom of the mold frame.f With mold mounting plate thickness T a Therefore, the thickness H of the mold frame fn It can be represented as:

[0115] H fn =H cn +2T fn +2T an (14)

[0116] For the bottom thickness T of the mold frame fn and mounting plate thickness T an They can be obtained separately based on the reference mold.

[0117] The difference between the bottom thickness of the mold frame and the bottom thickness of the mold core is 2T. fn It can be obtained based on the proportional coefficient k5 of the reference mold.

[0118] The proportionality constant k5 satisfies:

[0119] k5=(H c2 -H c1 ) / (T f2 -T f1 (15)

[0120] The difference between the thickness of the bottom of the mold frame and the thickness of the mold core is 2T. fn T fn satisfy:

[0121] T fn =T c1 +(H cn -H c1 )×k5 (16)

[0122] Mold mounting plate thickness T a The difference between the thickness of the core and the bottom thickness is 2T. an It can be obtained based on the proportional coefficient k6 of the reference mold.

[0123] The proportionality constant k6 satisfies:

[0124] k6=(H c2 -H c1 ) / (T a2 -T a1 (17)

[0125] T an satisfy:

[0126] T an =T a1 +(H cn -H c1 )×k6 (18)

[0127] This allows us to obtain the shape parameter W of the mold frame. fn L fn and H fn .

[0128] Furthermore, the shape parameters of the mold also include the height of the ejector structure, which can be obtained based on the scaling factor k7 of the reference mold, where k7 satisfies:

[0129] k7=(D d2 -D d1 ) / (H p2 -H p1 (19)

[0130] Among them, D d2 D represents the height of the ejection structure of the second reference mold. d1 H represents the height of the ejection structure of the first reference mold. p2 H is the height of the second reference part. p1 The height of the first reference part.

[0131] Height D of the ejector structure dn for:

[0132] D dn =D d1 +(H pn -H p1 )×k7 (20)

[0133] Among them, H pn The height of the part generated by the mold can be directly obtained in S202.

[0134] Furthermore, the flow length of the mold affects the number of hot runners. Specifically, the number of hot runners is positively correlated with the product size; therefore, the number of hot runners can be determined based on the ratio of product size to flow length. The flow length is related to the mold raw materials and the wall thickness of the parts. To reduce error, the flow length D... h The calculation formula can be:

[0135]

[0136] Where t is the wall thickness of the part, and k d t is the flow length coefficient. In some possible implementations, the thickness of automotive plastic parts is typically 2.5mm to 3mm, so t can be taken as 2.7mm. Flow length coefficient k d It can be set to 1.3.

[0137] The number of hot runners N can be determined by comparing the relationship between product size and flow length. hn Represented as:

[0138]

[0139] S104: The processing equipment determines the raw material cost of the mold based on the shape parameters of the mold.

[0140] The raw material cost of the mold includes the cost of the mold core, the mold frame, the ejection structure, and the hot runner. Specifically, the cost of the mold core C... cn It can be:

[0141] C cn =W cn ×L cn ×H cn ×ρ×P cn (twenty three)

[0142] Among them, W cn L is the width of the mold core. cn H is the length of the mold core. cn Let P be the height of the mold core, ρ be the density of iron, and P be the density of iron. cn This refers to the unit price of the mold core material.

[0143] The mold core material is related to the product's appearance requirements. Generally, electroplated parts have higher material requirements, while painted, textured, and smooth parts have progressively lower requirements. Specifically, for smooth PP material parts, the mold core uses P20 material, which costs approximately 30 yuan / kg. The material cost for the mold core of textured and matte parts is about 1.25 times that, and for electroplated parts, it is about 2.1 times that. The mold frame material is roughly the same.

[0144] Frame cost C fn It can be:

[0145] C fn =(W fn ×L fn ×H fn -W cn ×L cn ×H cn )×ρ×P fn (twenty four)

[0146] Among them, W fn L is the width of the mold frame. fn H is the length of the mold frame. fn W represents the thickness of the mold frame. cn L is the width of the mold core. cn H is the length of the mold core. cn Let P be the height of the mold core, ρ be the density of iron, and P be the density of iron. fn This is the unit price of the mold frame material.

[0147] Cost C of ejection structure dn for:

[0148] Cdn =W fn ×L fn ×D dn ×k p ×ρ×P fn (25)

[0149] Among them, W fn L is the width of the mold frame. fn D is the length of the mold frame. dn To determine the height of the jacking structure, k p P is the hollowing coefficient, ρ is the density of iron, and P is the hollowing coefficient. fn This is the unit price of the mold frame material.

[0150] Cost of hot runner C hn for:

[0151] C hn =P f ×N hn (26)

[0152] Among them, P f N is the unit price of the hot runner. hn This represents the number of hot runners. The unit price of the hot runner is positively correlated with the usage requirements, as shown in Table 1:

[0153] Table 1. Unit Price of Hot Runner

[0154] Parts types Hot runner unit price / 10,000 yuan Typical parts plugs 0.3 plug brackets 0.5 Bumper bracket, logo decorative strips 0.8 Long trim Grille 1 Grille body Protective panels 1.5 Bumper underguard Skin 2 Bumper skin

[0155] S106: The processing equipment determines the manufacturing cost of the mold based on the shape parameters of the mold.

[0156] Mold manufacturing cost C mn for:

[0157] C mn =Q n ×P mn +k c1 (27)

[0158] Among them, Q n P represents the mold processing cycle. mn k represents the unit price for mold processing. c1 This indicates the initial cost of mold manufacturing. The processing time for some parts is shown in Table 2.

[0159] Table 2 Typical Parts Processing Cycle

[0160]

[0161] Processing unit price P mn It can be:

[0162]

[0163] Where, k r k s k c2 All are processing unit price coefficients, k xn W is the machine coefficient. j L is the width of the inner distance of the machine tool tie rod. j This is the length of the inner distance of the machine tool tie rod. Machine tool coefficient k. xn The value of can be taken as the tonnage corresponding to the minimum machine tool that satisfies the requirement that the length and width of the inner distance of the tie rod are both greater than the length and width of the mold frame. Table 3 shows some machine tool coefficients and the length and width of the inner distance of the tie rod.

[0164] Table 3 Machine Coefficient

[0165]

[0166]

[0167]

[0168] S108: The processing equipment determines the proportion of the sum of raw material costs and manufacturing costs to the mold cost based on a cost estimation model.

[0169] In addition to raw material and manufacturing costs, mold costs may also include other costs such as design and management costs. Therefore, a cost estimation model can be used to determine the proportion of the sum of raw material and manufacturing costs in the total mold cost.

[0170] Specifically, the processing equipment can input the projected area of ​​the part into the cost estimation model, which then outputs the ratio of the sum of raw material costs and manufacturing costs to the mold cost. In some possible implementations, the cost estimation model can be trained using interpolation.

[0171] The ratio of the sum of raw material costs and manufacturing costs to the total mold cost can be represented by k. cn Indicates. k cn It can be determined by the coefficient k8 derived from the training data.

[0172] In some possible implementations, k8 can be:

[0173] k8=(k c2 -k c1 ) / (S2-S1) (29)

[0174] Where, k c2 k represents the ratio of the sum of raw material costs and manufacturing costs of the second reference mold to the total mold cost. c1S1 is the ratio of the sum of the raw material cost and manufacturing cost of the first reference mold to the total mold cost; S2 is the orthographic projection area of ​​the second reference part; and S1 is the orthographic projection area of ​​the first reference part.

[0175] The ratio of the sum of raw material costs and manufacturing costs to the total mold cost (k) cn for:

[0176] k cn =k c1 +(S n -S1)k8 (30)

[0177] S110: The processing equipment determines the mold cost based on the raw material cost, manufacturing cost, and proportion.

[0178] Mold cost C n It can be represented as:

[0179] C n =(C cn +C fn +C dn +C hn +C mn ) / k cn (31)

[0180] Among them, C cn For the cost of the core, C fn For the cost of the mold frame, C dn To offset structural costs, C hn For the cost of hot runners, C mn For manufacturing costs, k cn This represents the ratio of the sum of raw material costs and manufacturing costs to the total cost of the mold.

[0181] In this way, an accurate cost of the mold, including raw material costs, manufacturing costs, and other costs, can be obtained. In some possible implementations, to obtain an even more accurate mold cost, the hollowing-out coefficient k in the above formula... p Startup cost k c1 Processing unit price coefficient k r k s k c2 It can be obtained using a genetic algorithm.

[0182] Specifically, the NSGA2 algorithm can be used to calculate the Pareto boundary under multi-objective optimization, such as... Figure 4 As shown, the extremum problem of discontinuous functions can then be calculated, thereby determining the accurate hollowing coefficient k. p Startup cost k c1 Processing unit price coefficient k r k s k c2Other algorithms can also be used to obtain the above coefficient values, such as annealing algorithm, ant colony algorithm, etc.

[0183] Furthermore, the normal distribution module can be used to verify whether the determined coefficients satisfy a normal distribution, thereby determining the accurate coefficient values.

[0184] In summary, this application provides a method for determining mold costs. This method obtains the shape parameters of the mold, determines the raw material costs and manufacturing costs based on these parameters, and then determines the proportion of the sum of raw material costs and manufacturing costs to the total mold cost based on a cost estimation model. Thus, the mold cost can be determined based on the raw material costs, manufacturing costs, and the proportion. On the one hand, this method comprehensively considers the raw material costs, manufacturing costs, and other costs of the mold, enabling the acquisition of accurate mold costs. On the other hand, compared to the weight of the mold, the shape data of the mold contains more information, resulting in a more precise determination of the mold cost.

[0185] The above combination Figure 1 The method for determining mold cost provided in the embodiments of this application has been described in detail. Next, the apparatus for determining mold cost provided in the embodiments of this application will be described in conjunction with the accompanying drawings.

[0186] See Figure 5 The schematic diagram of the device for determining mold cost shown is shown. The device 400 includes: an acquisition module 502, a determination module 504, an estimation module 506, and a calculation module 508.

[0187] The acquisition module is used to acquire the shape parameters of the mold;

[0188] The determination module is used to determine the raw material cost and manufacturing cost of the mold based on the shape parameters of the mold;

[0189] An estimation module is used to determine the proportion of the sum of the raw material cost and the manufacturing cost to the mold cost based on a cost estimation model.

[0190] The calculation module is used to determine the mold cost based on the raw material cost, the manufacturing cost, and the ratio.

[0191] In some possible implementations, the raw material cost includes at least one of the following: mold core cost, mold frame cost, ejector structure cost, and hot runner cost.

[0192] In some possible implementations, the acquisition module can be used to:

[0193] Obtain the orthographic projection area of ​​the part manufactured by the mold;

[0194] The shape parameters of the mold are obtained based on the orthographic projection area of ​​the part and a first proportionality coefficient. The first proportionality coefficient is the difference between the shape difference of the reference mold and the area difference of the reference part. The shape difference of the reference mold is the difference between the shape parameters of the first reference mold and the shape parameters of the second reference mold. The area difference of the reference part is the difference between the orthographic projection area of ​​the first reference part manufactured by the first reference mold and the orthographic projection area of ​​the second reference part manufactured by the second reference mold.

[0195] In some possible implementations, the shape parameters include part parameters produced according to the mold, mold core width, mold core height, mold frame width, mold frame length, and mold frame thickness.

[0196] In some possible implementations, the determining module can be used to:

[0197] The cost of the mold core is determined based on the mold core length, the mold core width, the mold core height, the mold core material density, and the unit price of the mold core material.

[0198] The cost of the mold frame is determined based on the mold frame length, mold frame width, mold frame thickness, mold core length, mold core width, mold core height, mold frame material density, and mold frame material unit price.

[0199] The cost of the ejector structure is determined based on the width of the mold frame, the length of the mold frame, the parameters of the ejector structure, the hollowing coefficient, the density of the ejector structure material, and the unit price of the ejector structure material.

[0200] The cost of the hot runner is determined based on the number of hot runners and the unit price of the hot runners.

[0201] In some possible implementations, the determining module can be used to:

[0202] The manufacturing unit price of the mold is obtained based on the part parameters, first coefficient, second coefficient, third coefficient, machine tool tie rod parameters, and machine tool coefficient.

[0203] The manufacturing cost of the mold is determined based on the manufacturing unit price, processing cycle, and initial cost.

[0204] In some possible implementations, the estimation module is specifically used for:

[0205] Obtain the orthographic projection area of ​​the mold;

[0206] Based on the projected area and the cost estimation model, determine the proportion of the sum of raw material cost and manufacturing cost to the mold cost;

[0207] The cost estimation model is used to obtain the proportional parameters of the mold based on the orthographic projection area of ​​the mold and a second proportional coefficient. The proportional parameters represent the proportion of the sum of the raw material cost and the manufacturing cost to the cost of the mold. The second proportional coefficient is the ratio of the proportional difference of the reference mold to the area difference of the reference mold. The proportional difference of the reference mold is the difference between the proportional parameters of the first reference mold and the proportional parameters of the second reference mold. The area difference of the reference mold is the difference between the orthographic projection area of ​​the first reference mold and the orthographic projection area of ​​the second reference mold.

[0208] The mold cost determination apparatus 500 according to the embodiments of this application can correspond to the execution of the method described in the embodiments of this application, and the above and other operations and / or functions of each module of the mold cost determination apparatus 500 are respectively for implementing Figure 1 For the sake of brevity, the corresponding processes of each method in the code will not be elaborated here.

[0209] This application provides an apparatus for implementing a method for determining mold costs. The apparatus includes a processor and a memory. The processor and the memory communicate with each other. The processor executes instructions stored in the memory to cause the apparatus to perform the method for determining mold costs.

[0210] This application provides a computer-readable storage medium storing instructions that, when executed on a device, cause the device to perform the aforementioned method for determining mold costs.

[0211] This application provides a computer program product containing instructions that, when run on a device, cause the device to perform the aforementioned method for determining mold costs.

[0212] It should also be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. In addition, in the device embodiment drawings provided in this application, the connection relationship between modules indicates that they have a communication connection, which can be implemented as one or more communication buses or signal lines.

[0213] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware, or it can be implemented by special-purpose hardware including application-specific integrated circuits, special-purpose CPUs, special-purpose memory, special-purpose components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be diverse, such as analog circuits, digital circuits, or special-purpose circuits. However, for this application, software program implementation is more often the preferred implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk, or optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, training equipment, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0214] In the above embodiments, the implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, in the form of a computer program product.

[0215] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

Claims

1. A method for determining mold cost, characterized in that, The method includes: Obtain the shape parameters of the mold; Based on the shape parameters of the mold, determine the raw material cost and manufacturing cost of the mold; The proportion of the sum of the raw material cost and the manufacturing cost to the mold cost is determined based on the cost estimation model; The mold cost is determined based on the raw material cost, the manufacturing cost, and the ratio. The determination of the ratio of the sum of raw material costs and manufacturing costs to the mold cost based on the cost estimation model includes: Obtain the orthographic projection area of ​​the mold; Based on the projected area and the cost estimation model, determine the proportion of the sum of raw material cost and manufacturing cost to the mold cost; The cost estimation model is used to obtain the proportional parameters of the mold based on the orthographic projection area of ​​the mold and a second proportional coefficient. The proportional parameters represent the proportion of the sum of the raw material cost and the manufacturing cost to the cost of the mold. The second proportional coefficient is the ratio of the proportional difference of the reference mold to the area difference of the reference mold. The proportional difference of the reference mold is the difference between the proportional parameters of the first reference mold and the proportional parameters of the second reference mold. The area difference of the reference mold is the difference between the orthographic projection area of ​​the first reference mold and the orthographic projection area of ​​the second reference mold.

2. The method according to claim 1, characterized in that, The raw material cost includes at least one of the following: mold core cost, mold frame cost, ejector structure cost, and hot runner cost.

3. The method according to claim 1, characterized in that, The step of obtaining the shape parameters of the mold includes: Obtain the orthographic projection area of ​​the part manufactured by the mold; The shape parameters of the mold are obtained based on the orthographic projection area of ​​the part and a first proportionality coefficient. The first proportionality coefficient is the difference between the shape difference of the reference mold and the area difference of the reference part. The shape difference of the reference mold is the difference between the shape parameters of the first reference mold and the shape parameters of the second reference mold. The area difference of the reference part is the difference between the orthographic projection area of ​​the first reference part manufactured by the first reference mold and the orthographic projection area of ​​the second reference part manufactured by the second reference mold.

4. The method according to claim 3, characterized in that, The shape parameters include the part parameters produced according to the mold, mold core width, mold core height, mold frame width, mold frame length, and mold frame thickness.

5. The method according to claim 4, characterized in that, The step of determining the raw material cost and manufacturing cost of the mold based on its shape parameters includes: The cost of the mold core is determined based on the mold core length, the mold core width, the mold core height, the mold core material density, and the unit price of the mold core material. The cost of the mold frame is determined based on the mold frame length, mold frame width, mold frame thickness, mold core length, mold core width, mold core height, mold frame material density, and mold frame material unit price. The cost of the ejector structure is determined based on the width of the mold frame, the length of the mold frame, the parameters of the ejector structure, the hollowing coefficient, the density of the ejector structure material, and the unit price of the ejector structure material. The cost of the hot runner is determined based on the number of hot runners and the unit price of the hot runners.

6. The method according to claim 5, characterized in that, The step of determining the raw material cost and manufacturing cost of the mold based on its shape parameters includes: The manufacturing unit price of the mold is obtained based on the part parameters, first coefficient, second coefficient, third coefficient, machine tool tie rod parameters, and machine tool coefficient. The manufacturing cost of the mold is determined based on the manufacturing unit price, processing cycle, and initial cost.

7. The method according to claim 6, characterized in that, The method further includes: At least one of the starting cost, the hollowing-out coefficient, the first coefficient, the second coefficient, and the third coefficient is obtained through a normal distribution model.

8. A device for determining mold cost, characterized in that, The device includes: The acquisition module is used to acquire the shape parameters of the mold; The determination module is used to determine the raw material cost and manufacturing cost of the mold based on the shape parameters of the mold. An estimation module is used to determine the proportion of the sum of the raw material cost and the manufacturing cost to the mold cost based on a cost estimation model. The calculation module is used to determine the mold cost based on the raw material cost, the manufacturing cost, and the ratio; The estimation module is specifically used for: Obtain the orthographic projection area of ​​the mold; Based on the projected area and the cost estimation model, determine the proportion of the sum of raw material cost and manufacturing cost to the mold cost; The cost estimation model is used to obtain the proportional parameters of the mold based on the orthographic projection area of ​​the mold and a second proportional coefficient. The proportional parameters represent the proportion of the sum of the raw material cost and the manufacturing cost to the cost of the mold. The second proportional coefficient is the ratio of the proportional difference of the reference mold to the area difference of the reference mold. The proportional difference of the reference mold is the difference between the proportional parameters of the first reference mold and the proportional parameters of the second reference mold. The area difference of the reference mold is the difference between the orthographic projection area of ​​the first reference mold and the orthographic projection area of ​​the second reference mold.

9. A device, characterized in that, The device includes a processor and a memory; The processor is configured to execute instructions stored in the memory to cause the device to perform the method as described in any one of claims 1 to 7.

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