Batch design method and device for boss section ring forging blank size

Abstract

The invention relates to the technical field of annular piece forging, and discloses a batch design method and device for the blank size of boss-section ring forgings, and the method comprises the steps: building a first three-dimensional geometric model of the ring forgings and a second three-dimensional geometric model of annular blanks with the same volume as the ring forgings according to the design structure of the ring forgings, based on the first three-dimensional geometric model and the second three-dimensional geometric model, a three-dimensional finite element model of the ring forging formed by rolling the blank is established; obtaining the wall thickness of the boss and the section filling rate of the ring forge piece when the wall thicknesses of different blank pieces are rolled to the design size of the ring forge piece; constructing a section filling rate analysis function based on the wall thickness of the blank piece and the wall thickness of the boss of the ring forging piece; workblank wall thicknesses corresponding to the wall thicknesses of the bosses of the different ring forgings are calculated; according to the design height of the ring forge piece and the workblank piece wall thickness obtained through calculation, the workblank piece inner diameter corresponding to the same workblank size can be obtained, the workblank size can be efficiently and accurately determined, the section shape and size precision of the ring forge piece are guaranteed, and the period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of ring forging, and discloses a method and a device for batch designing the size of boss cross-section ring forging blanks. Background Art

[0002] Special-shaped rings are widely used in aerospace, energy, shipbuilding and other industrial fields. As a typical special-shaped ring, the rationality of the blank design of the boss cross-section ring forging directly determines the accuracy of the cross-sectional shape and size of the ring forging.

[0003] However, the traditional method of determining the blank dimensions of boss-section ring forgings based on empirical production and simulated trial production has obvious shortcomings such as high cost, long cycle time, and low efficiency. As industrial production requirements for efficiency and precision continue to increase, there is an urgent need to develop a method for batch designing the blank dimensions of boss-section ring forgings to meet actual production needs. Summary of the Invention

[0004] The purpose of the present invention is to provide a batch design method and device for the blank size of boss cross-section ring forgings, which can efficiently and accurately determine the blank size, ensure the cross-sectional shape and dimensional accuracy of the ring forgings, and at the same time reduce costs and shorten cycles.

[0005] In order to achieve the above technical effects, the technical solution adopted by the present invention is:

[0006] A method for batch designing the size of boss cross-section ring forging blanks comprises:

[0007] Establishing a first three-dimensional geometric model of the ring forging and a second three-dimensional geometric model of an annular blank having the same volume as the ring forging according to the design structure of the ring forging, and establishing a three-dimensional finite element model of the ring forging formed by rolling the blank based on the first three-dimensional geometric model and the second three-dimensional geometric model;

[0008] The boss wall thickness and the cross-sectional filling rate of the ring forging when different blank wall thicknesses are rolled to the design size of the ring forging are obtained by simulation using experimental analysis software. The cross-sectional filling rate of the ring forging is δ ≥ 95%;

[0009] With the cross-section filling rate of the ring forging and the wall thickness of the ring forging boss as independent variables and the wall thickness of the blank as the dependent variable, an analytical function of the cross-section filling rate based on the wall thickness of the blank and the wall thickness of the ring forging boss is constructed.

[0010] According to the cross-section filling rate analysis function, the blank wall thickness corresponding to the boss wall thickness of different ring forgings is calculated;

[0011] According to the design height of the ring forging and the calculated wall thickness of the blank, the inner diameter of the blank corresponding to the same blank volume is obtained.

[0012] As a preferred embodiment, the cross-sectional filling rate analysis function δ=∫(H 凸 ,H0), where δ is the cross-sectional filling rate of the ring forging, H 凸 is the wall thickness of the boss of the ring forging, and H0 is the wall thickness of the boss of the blank.

[0013] As a preferred embodiment, the inner diameter of the blank is calculated according to the formula Where r is the inner diameter of the blank, V is the design volume of the ring forging, B is the design height of the ring forging, and H0 is the wall thickness of the blank.

[0014] As a preferred embodiment, the experimental analysis software is Minitab.

[0015] A device for batch designing the size of boss-section ring forging blanks comprises: a model building module for establishing, based on the design structure of the ring forging, a first three-dimensional geometric model of the ring forging and a second three-dimensional geometric model of a blank having the same volume as the ring forging; and establishing, based on the first three-dimensional geometric model and the second three-dimensional geometric model, a three-dimensional finite element model of the ring forging formed by rolling the blank;

[0016] A simulation analysis module is used to simulate the experimental analysis software to obtain the boss wall thickness and the ring forging cross-section filling rate when different blank wall thicknesses are rolled to the ring forging design size, and the ring forging cross-section filling rate is δ ≥ 95%;

[0017] A cross-section filling rate analysis function construction module is used to construct a cross-section filling rate analysis function based on the wall thickness of the blank and the wall thickness of the ring forging boss, taking the cross-section filling rate of the ring forging and the wall thickness of the ring forging boss as independent variables and the wall thickness of the blank as the dependent variable;

[0018] Blank wall thickness analysis module, used to calculate the blank wall thickness corresponding to different ring forging boss wall thicknesses based on the cross-section filling rate analysis function;

[0019] The blank inner diameter analysis module is used to obtain the blank inner diameter corresponding to the same blank volume based on the designed height of the ring forging and the calculated blank wall thickness.

[0020] As a preferred embodiment, in the simulation analysis module, the experimental analysis software is Minitab.

[0021] As a preferred embodiment, in the cross-section filling rate analysis function construction module, the cross-section filling rate analysis function δ=∫(H 凸 ,H0), where δ is the cross-sectional filling rate of the ring forging, H 凸 is the wall thickness of the boss of the ring forging, and H0 is the wall thickness of the boss of the blank.

[0022] As a preferred embodiment, in the blank inner diameter analysis module, the blank inner diameter is calculated according to the formula Where r is the inner diameter of the blank, V is the design volume of the ring forging, B is the design height of the ring forging, and H0 is the wall thickness of the blank.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] By establishing the relationship between the wall thickness of the boss ring forging, the wall thickness of the blank, and the cross-sectional fill rate of the ring forging, the blank size can be designed in batches, achieving significant technical results. First, it can ensure the cross-sectional shape and dimensional accuracy of the ring forgings, meeting the industrial demand for high-precision ring forgings. Second, it avoids the drawbacks of traditional methods that rely on experience and extensive simulation trials, significantly reducing costs. Third, through scientific experimental design and numerical simulation verification, it shortens the design cycle and improves production efficiency, showing good economic benefits and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Flowchart of the batch design method for the size of boss section ring forging blanks in an embodiment of the present invention.

[0026] Figure 2 This is a structural block diagram of a device for batch designing the blank size of boss section ring forgings in an embodiment of the present invention.

[0027] Figure 3 Schematic diagram of the ring forging structure in an embodiment of the present invention.

[0028] Figure 4 Schematic diagram of the blank structure in an embodiment of the present invention. Description of the drawings:

[0030] 1. Ring forgings; 2. Blank parts; 3. Model building module; 4. Simulation analysis module; 5. Section filling rate analysis function building module; 6. Blank wall thickness analysis module; 7. Blank inner diameter analysis module. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below with reference to the embodiments and accompanying drawings. However, this should not be construed as limiting the scope of the present invention to the following embodiments, as all technologies implemented based on the present invention fall within the scope of the present invention.

[0032] Example 1, a batch design method for the blank size of a boss section ring forging, comprising: establishing a three-dimensional geometric model, establishing a first three-dimensional geometric model of the ring forging 1 and a second three-dimensional geometric model of a blank 2 of the same volume as the ring forging 1 according to the design structure of the ring forging 1, and establishing a three-dimensional finite element model of the ring forging 1 formed by rolling the blank 2 based on the first three-dimensional geometric model and the second three-dimensional geometric model. The blank 2 and the ring forging 1 are equal in volume. This is based on the principle of constant material volume, ensuring the conservation of material mass during the rolling process. Through the three-dimensional geometric model, the geometric shape and structural characteristics of the ring forging 1 and the blank 2 can be simulated more accurately, providing a basis for subsequent simulation analysis of the three-dimensional finite element model.

[0033] Data Acquisition through Simulation Analysis: Using experimental analysis software, preferably Minitab, simulate the boss wall thickness and cross-sectional fill factor of the ring forging 1 when rolling different blanks 2 to the design dimensions of the ring forging 1. The cross-sectional fill factor of the ring forging 1 is δ ≥ 95%. During the simulation, the wall thickness of the blank 2 is varied to simulate the rolling process. The boss wall thickness and cross-sectional fill factor of the ring forging 1 after rolling are observed and recorded. The cross-sectional fill factor is a key indicator of the cross-sectional fill effect of the ring forging 1. δ ≥ 95% is required to ensure the cross-sectional quality of the ring forging 1.

[0034] Constructing a cross-sectional filling rate analysis function: Taking the cross-sectional filling rate of the ring forging 1 and the wall thickness of the boss of the ring forging 1 as independent variables and the wall thickness of the blank 2 as the dependent variable, constructing a cross-sectional filling rate analysis function based on the wall thickness of the blank 2 and the wall thickness of the boss of the ring forging 1. Specifically, the cross-sectional filling rate analysis function is δ=∫(H 凸 , H0), where δ is the cross-section filling rate of the ring forging 1, H 凸 is the boss wall thickness of ring forging 1, H0 is the boss wall thickness of blank 2. This function reflects the variation of the wall thickness of blank 2 under different requirements of the boss wall thickness of ring forging 1 and the cross-sectional filling rate.

[0035] Calculate the wall thickness of blank 2: Based on the cross-sectional filling rate analysis function, calculate the wall thickness of blank 2 corresponding to different boss wall thicknesses of ring forging 1. By inputting different boss wall thicknesses of ring forging 1 and meeting the required cross-sectional filling rate δ≥95%, the corresponding wall thickness of blank 2 can be obtained using the constructed analysis function.

[0036] Calculate the inner diameter of the blank 2. According to the design height of the ring forging and the calculated wall thickness of the blank 2, the inner diameter of the blank 2 corresponding to the same volume of the blank 2 is obtained. Specifically, the inner diameter of the blank 2 is calculated according to the formula Where r is the inner diameter of the blank, V is the design volume of the ring forging, B is the design height of the ring forging, and H0 is the wall thickness of the blank.

[0037] Based on the same inventive concept, this embodiment also provides a device for batch designing the size of boss cross-section ring forging blanks, which is characterized by comprising:

[0038] The model building module 3 is used to establish a first three-dimensional geometric model of the ring forging 1 and a second three-dimensional geometric model of a blank 2 of equal volume to the ring forging 1 according to the design structure of the ring forging 1, and to establish a three-dimensional finite element model of the ring forging 1 formed by rolling the blank 2 based on the first three-dimensional geometric model and the second three-dimensional geometric model;

[0039] Simulation analysis module 4 is used for experimental analysis software simulation to obtain the boss wall thickness and the cross-sectional filling rate of the ring forging 1 when the blank 2 with different wall thicknesses is rolled to the design size of the ring forging 1, and the cross-sectional filling rate of the ring forging 1 is δ ≥ 95%;

[0040] a cross-section filling rate analysis function construction module 5, for constructing a cross-section filling rate analysis function based on the wall thickness of the blank 2 and the wall thickness of the boss of the ring forging 1, with the cross-section filling rate of the ring forging 1 and the wall thickness of the boss of the ring forging 1 as independent variables and the wall thickness of the blank 2 as the dependent variable;

[0041] The blank wall thickness analysis module 6 is used to calculate the wall thickness of the blank 1 corresponding to the boss wall thickness of different ring forgings 1 according to the cross-section filling rate analysis function;

[0042] The blank inner diameter analysis module 7 is used to obtain the inner diameter of the blank 2 corresponding to the same blank volume based on the designed height of the ring forging 1 and the calculated wall thickness of the blank 2.

[0043] When used specifically:

[0044] 1. Establishing a first three-dimensional geometric model of the ring forging 1 and a second three-dimensional geometric model of the blank 2 of the same volume as the ring forging 1 can more accurately simulate the geometric shape and structural characteristics of the ring forging 1 and the blank 2. Based on the first three-dimensional geometric model and the second three-dimensional geometric model, a three-dimensional finite element model of the ring forging 1 formed by rolling the blank 2 is established, providing a basis for simulation analysis.

[0045] 2. Use Minitab software to analyze and obtain the size parameters of ring forging 1: determine the size parameters of different ring forging 1 boss ring forging 1 (including ring forging 1 volume V, ring forging 1 inner diameter d, ring forging 1 height B, ring forging 1 thinnest wall H, ring forging 1 boss wall thickness H 凸 、Ring forging 1 boss height B 凸 ), as shown in Table 1 below:

[0046] Table 1 Dimensional parameters of different boss ring forgings

[0047]

[0048] 3. Set the wall thickness H of the boss of the ring forging 1 determined in Table 1 to 凸 Substitute the cross-section filling rate analysis function δ=∫(H 凸 ,H0), combined with the filling rate standard δ≥95%, determine the range of the wall thickness H0 of the blank 2 corresponding to different boss ring forgings 1, and take the maximum value. The results are shown in Table 3 below:

[0049] Table 2 Blank wall thickness corresponding to different boss ring forgings

[0050] Serial number 1 2 3 Blank wall thickness / mm 90 120 150

[0051] 4. Calculate the size of blank 2: Based on the volume of ring forging boss 1, ring forging boss 1, and height of ring forging 1 in Table 1 and the different blank wall thickness H0 in Table 2, substitute the inner diameter of blank 2 and calculate according to the formula Calculate the inner diameter r of blank 2. The results are shown in Table 4 below:

[0052] Table 3 Blank sizes corresponding to different boss ring forgings

[0053] Serial number Blank wall thickness / mm Blank height / mm Inner diameter of blank / mm 1 90 200 544 2 120 200 680 3 150 200 666

[0054] 5. Verify the rationality of the blank size: Based on the size of blank 1 in Table 3, a ring rolling finite element model was established. After modeling, the model was numerically simulated using Minitab software to extract the cross-sectional filling rate δ. The results are shown in Table 5 below:

[0055] Table 5 Simulation results of different blanks

[0056] Serial number 1 2 3 Cross-section filling rate 97％ 99％ 98％

[0057] The cross-sectional filling rate δ corresponding to each boss ring forging 2 meets the standard of δ≥95%, indicating that the blank size is reasonable.

[0058] 6. Closed-loop iterative adjustment (example): If the initial H0 in a case is 80, and δ is 94% after simulation (not up to standard), increase H0 to 90mm (increase by 10mm each time), return to the step of calculating the blank size, recalculate r=544mm, and re-simulate. If δ=97% meets the standard, stop, otherwise continue to adjust. Adjustment logic: increase the blank volume by increasing H0 to ensure sufficient material in the boss section and avoid filling defects.

[0059] 7. Output blank parameters: Output the verified reasonable blank size parameters in Table 4 for actual production.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A batch design method for the size of boss section ring forging blanks, characterized in that: include: According to the design structure of the ring forging (1), a first three-dimensional geometric model of the ring forging (1) and a second three-dimensional geometric model of an annular blank (2) having the same volume and height as the ring forging (1) are established; and based on the first three-dimensional geometric model and the second three-dimensional geometric model, a three-dimensional finite element model of the ring forging (1) formed by rolling the blank (2) is established; The ring forging (1) boss wall thickness and the ring forging (1) cross-sectional filling rate are obtained by simulation using experimental analysis software when different blanks (2) are rolled to the design size of the ring forging (1); Taking the cross-sectional filling rate of the ring forging (1) and the wall thickness of the boss of the ring forging (1) as independent variables and the wall thickness of the blank (2) as the dependent variable, a cross-sectional filling rate analysis function based on the wall thickness of the blank (2) and the wall thickness of the boss of the ring forging (1) is constructed; According to the cross-section filling rate analysis function, as well as the design size and design cross-section filling rate requirements of the ring forging (1), the wall thickness of the blank (2) is obtained by analysis; According to the design dimensions of the ring forging (1) to be designed and the wall thickness of the blank (2) obtained by calculation, the inner diameter of the blank (2) corresponding to the blank (2) of the same volume and height is obtained.

2. The method for batch designing the size of boss cross-section ring forging blanks according to claim 1, characterized in that: The cross-section filling rate analysis function δ=∫(H 凸 ,H0), where δ is the cross-sectional filling rate of the ring forging (1), H 凸 is the wall thickness of the boss of the ring forging (1), and H0 is the wall thickness of the boss of the blank (2).

3. The method for batch designing the size of boss cross-section ring forging blanks according to claim 1, characterized in that: The inner diameter of the blank (2) is calculated according to the formula Where r is the inner diameter of the blank (2), V is the design volume of the ring forging (1), B is the design height of the ring forging (1), and H0 is the wall thickness of the blank (2).

4. The method for batch designing the size of boss cross-section ring forging blanks according to claim 1, characterized in that: The experimental analysis software is Minitab.

5. A device for batch designing the size of boss section ring forging blanks, characterized in that: include: A model building module (3) is used to establish a first three-dimensional geometric model of the ring forging (1) and a second three-dimensional geometric model of a blank (2) having the same volume as the ring forging (1) according to the design structure of the ring forging (1); and to establish a three-dimensional finite element model of the ring forging (1) formed by rolling the blank (2) based on the first three-dimensional geometric model and the second three-dimensional geometric model; A simulation analysis module (4) is used for obtaining, by simulation of experimental analysis software, the boss wall thickness and the cross-sectional filling rate of the ring forging (1) when the wall thickness of the blank (2) is rolled to the design size of the ring forging (1); a cross-sectional filling rate analysis function construction module (5), for constructing a cross-sectional filling rate analysis function based on the wall thickness of the blank (2) and the wall thickness of the boss of the ring forging (1), with the cross-sectional filling rate of the ring forging (1) and the wall thickness of the boss of the ring forging (1) as independent variables and the wall thickness of the blank (2) as a dependent variable; A blank wall thickness analysis module (6) is used to calculate the wall thickness of the blank (2) corresponding to the boss wall thickness of different ring forgings (1) based on a cross-section filling rate analysis function; The blank inner diameter analysis module (7) is used to obtain the inner diameter of the blank (2) corresponding to the same blank volume based on the design height of the ring forging (1) and the calculated wall thickness of the blank (2).

6. The device for batch designing the size of boss cross-section ring forging blanks according to claim 5, characterized in that: In the simulation analysis module, the experimental analysis software is Minitab.

7. The device for batch designing the size of boss cross-section ring forging blanks according to claim 6, characterized in that: In the cross-section filling rate analysis function construction module, the cross-section filling rate analysis function δ=∫(H 凸 ,H0), where δ is the cross-sectional filling rate of the ring forging (1), H 凸 is the wall thickness of the boss of the ring forging (1), and H0 is the wall thickness of the boss of the blank (2).

8. The device for batch designing the size of boss cross-section ring forging blanks according to claim 7, characterized in that: In the inner diameter analysis module of the blank (2), the inner diameter of the blank (2) is calculated according to the formula Where r is the inner diameter of the blank (2), V is the design volume of the ring forging (1), B is the design height of the ring forging (2), and H0 is the wall thickness of the blank (2).

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