TWI847385B - System and method for forged hand tool socket design - Google Patents

Abstract

A system for a forged hand tool socket design and a method for a forged hand tool socket design are provided. The system includes a design knowledge base module and a processor. The design knowledge base module is configured to store socket forging design knowledge data. The socket forging design knowledge data includes a pass design sequence rule and a socket forging forming rule. The processor is configured to perform the method. The method includes: receiving an input parameter group which includes a plurality of product size parameters of requirements of a target socket, a material parameter and a pass quantity parameter by a user interface; and calculating a volume forming amount of the stock in each forging pass according to the input parameter group, the pass design sequence rule and the socket forging forming rule to generate a forging stock size group of the forging stock and a mold size group of a mold in each forging pass of a finished socket corresponding to the target socket.

Description

Forged hand tool socket design system and method

The present invention relates to a design system and method, and in particular to a forged hand tool socket design system and method.

The hand tool socket is generally cylindrical, with one end forming an inwardly concave polygonal hole, such as a hexagon, octagon, dodecagon, star, etc., and the other end forming an inwardly concave quadrangular hole. The hand tool socket is combined with a hand tool (such as a wrench) to quickly disassemble and lock mechanical parts such as bolts and nuts inserted into the corresponding polygonal hole.

In the industry of forged hand tool sockets, although computer-aided design (CAD) software can be used to assist in socket design to reduce the design and manufacturing cycle. However, the design process and parameter settings of the socket are not parameterized and modularized. To avoid the cost and time waste caused by design blind spots and repetitive errors caused by the lack of experience of designers, we still have to rely on the experience of old masters. Therefore, it is worthwhile to make the current design process of forged hand tool sockets move towards automated design.

The purpose of the present invention is to provide a forged hand tool socket design system and method, which inputs the end recessed hole shape parameters, grade parameters, product size parameters, material parameters, and pass number parameters of the target socket to be designed by the user. The forged hand tool socket design system executes the forged hand tool socket design method according to the user's input parameters to calculate the forging blank size set of the forging blank and the mold size set of the mold for each pass of forging, and completes the design of the forged hand tool socket, effectively avoiding the design blind spots and repeated errors of designers, and greatly shortening the design development schedule and enhancing industry competitiveness.

One aspect of the present invention is to provide a forging hand tool socket design system, which includes a design knowledge base module, a memory, and a processor. The design knowledge base module is used to store socket forging design knowledge data, wherein the socket forging design knowledge data includes a pass design sequence rule and a socket forging forming rule. The pass design sequence rule is the design sequence of each pass of the blank in forging, and the sleeve forging forming rule is that the volume of the blank in each pass remains the same. The memory is used to store a plurality of instructions. The processor is electrically connected to the memory to load instructions to: receive an input parameter set using a user interface, the input parameter set including multiple product size parameters, material parameters and pass quantity parameters required by the target sleeve; and calculate the volume forming amount of the blank in each pass of forging according to the input parameter set, pass design sequence rule and sleeve forging forming rule to generate a forging blank size set and a mold size set of the mold corresponding to each pass of the finished sleeve corresponding to the target sleeve.

According to one embodiment of the present invention, the input parameter set further includes an overmodulus parameter, which is the amount by which the mold space defined by the mold in each pass is greater than the forging blank. When the processor calculates the volume forming amount of the blank in each pass _{, the processor performs the following steps: calculating the outer diameter of the forging blank in each pass according to the formula Di0} = D -( Nn _- Ni ₎ × K , wherein _Di0 is the outer diameter of the forging blank, D is the outer diameter parameter in the product size parameter, _Nn is the pass number parameter, _Ni is the i-th pass number, and K is the overmodulus parameter; and calculating the height forming amount of the blank in each pass according to the outer diameter of the forging blank in each pass and the sleeve forging forming rule.

According to an embodiment of the present invention, when the processor calculates the volume forming amount of the blank in each pass, the processor sets the parting line of the blank according to the product size parameter and divides the blank into a first parting part and a second parting part. The first parting part maintains the same volume in each pass according to the sleeve forging forming rule, and the second parting part maintains the same volume in each pass according to the sleeve forging forming rule.

According to an embodiment of the present invention, the forging hand tool socket design system further includes a computer-aided design software module, which is used to provide at least one computer-aided design software, wherein the processor further loads instructions to perform: according to the forging size group corresponding to each pass, the mold size group and at least one computer-aided design software to generate the forging model of the forging and the mold model of the mold corresponding to each pass.

According to an embodiment of the present invention, the sleeve forging design knowledge data further includes an upper limit method applicable to the sleeve, and the processor further loads instructions to perform: according to the input parameter set, the forged blank size set and the mold size set corresponding to each pass, and the upper limit method, the corresponding forming load estimation of the forged blank and the corresponding mold stress estimation of the mold are calculated.

Another aspect of the present invention is to provide a method for designing a forged hand tool socket, which is executed by a forged hand tool socket design system, wherein the method for designing a forged hand tool socket includes: providing a design knowledge base module, the design knowledge base module is used to store socket forging design knowledge data, wherein the socket forging design knowledge data includes a pass design sequence rule and a socket forging forming rule, the pass design sequence rule is the design sequence of each pass of the blank in forging, and the socket forging forming rule is the design sequence of each pass of the blank in forging. The rule is that the volume of the blank remains the same in each pass; the user interface is used to receive the input parameter set, which includes multiple product size parameters, material parameters and pass quantity parameters required by the target sleeve; and the volume forming amount of the blank in each pass of forging is calculated according to the input parameter set, the pass design sequence rule and the sleeve forging forming rule to generate the forging blank size set and the mold size set of the mold corresponding to each pass of the finished sleeve corresponding to the target sleeve.

According to an embodiment of the present invention, the input parameter set further includes an overmodulus parameter, which is the amount by which the mold space defined by the mold in each pass is greater than the forging blank. The step of calculating the volume forming amount of the blank in each pass includes: calculating the outer diameter of the forging blank in each pass according to the formula Di ₌ D -( Nn _- Ni ₎ × K , wherein _Di is the outer diameter of the forging blank, D is the outer diameter parameter in the product size parameter, _Nn is the pass number parameter, _Ni is the i-th pass number, and K is the overmodulus parameter; and calculating the height forming amount of the blank in each pass according to the outer diameter of the forging blank in each pass and the sleeve forging forming rule.

According to an embodiment of the present invention, the step of calculating the volume forming amount of the blank in each pass includes: setting the parting line of the blank according to the product size parameter to divide the blank into a first parting part and a second parting part; and the first parting part keeps the same volume in each pass according to the sleeve forging forming rule, and the second parting part keeps the same volume in each pass according to the sleeve forging forming rule.

According to an embodiment of the present invention, the forging hand tool socket design method further includes: providing a computer-aided design software module, the computer-aided design software module is used to provide at least one computer-aided design software; and generating a forging model of the forging corresponding to each pass and a mold model of the mold according to the forging size group, mold size group and at least one computer-aided design software corresponding to each pass.

According to an embodiment of the present invention, the sleeve forging design knowledge data further includes an upper limit method applicable to the sleeve, and the forging hand tool sleeve design method further includes: according to the input parameter set, the forging blank size set and the mold size set corresponding to each pass, and the upper limit method, the corresponding forming load estimation of the forging blank and the corresponding mold stress estimation of the mold are calculated.

100: Forged hand tool socket design system

110: User interface module

120: Design database module

130: Design knowledge base module

140: Computer-aided design software module

150: Inference Engine Module

151: Design rule calculator submodule

152: Forming force estimator submodule

153: Model stress estimator submodule

154: Forging Builder Submodule

155:Mold builder submodule

200: User interface

600: Design method of forged hand tool socket

610~670: Steps

700: Parting line

710: First mold separation part

720: Second mold separation part

800: User interface

900: Parting line

910: First mold separation part

920: Second mold separation part

In order to more fully understand the embodiment and its advantages, the following description is made in conjunction with the attached drawings, wherein: [Figure 1] is a functional block diagram of the forging hand tool sleeve design system according to the embodiment of the present invention; [Figure 2] is a schematic diagram of the user interface of the forging hand tool sleeve design system according to the embodiment of the present invention; [Figure 3] is a diagram of the forging of the six-pass first-order finished sleeve produced by the forging hand tool sleeve design system according to the embodiment of the present invention in the blank and the forging blank corresponding to the first pass. [Fig. 4] is a schematic diagram of the forged blank size group and the mold size group of the mold for the six-pass first-order finished sleeve at the second pass and the third pass respectively corresponding to the forged blank size group and the mold size group of the mold; [Fig. 5] is a schematic diagram of the forged blank size group and the mold size group of the mold for the six-pass first-order finished sleeve at the fourth pass and the fifth pass respectively corresponding to the forged blank size group, and the mold size group of the forged blank corresponding to the sixth pass; [Fig. 6] is a design method for forging hand tool sleeves according to an embodiment of the present invention FIG. 7 is a schematic diagram of setting a first-order sleeve parting line when designing a forged hand tool sleeve according to an embodiment of the present invention; FIG. 8 is another schematic diagram of a user interface of a forged hand tool sleeve design system according to an embodiment of the present invention; FIG. 9 is a schematic diagram of a six-pass second-order finished sleeve generated by the forged hand tool sleeve design system according to an embodiment of the present invention in the blank and the forging blank size group corresponding to the first pass and the mold size group of the mold; FIG. 0] is a schematic diagram of the forging size group of the forged blank and the mold size group of the mold corresponding to the second and third passes of the six-pass second-order finished sleeve; [Figure 11] is a schematic diagram of the forging size group of the forged blank and the mold size group of the mold corresponding to the fourth and fifth passes of the six-pass second-order finished sleeve, and the forging size group of the forged blank corresponding to the sixth pass; and [Figure 12] is a schematic diagram of setting the second-order sleeve parting line when designing a forged hand tool sleeve according to an embodiment of the present invention.

The following is a detailed discussion of embodiments of the present invention. However, it is understood that the embodiments provide many applicable concepts that can be implemented in a variety of specific contexts. The embodiments discussed and disclosed are for illustrative purposes only and are not intended to limit the scope of the present invention.

The terms used in this article are only for describing specific embodiments and are not intended to limit the scope of the patent application. Unless otherwise limited, the singular form "a" or "the" can also be used to represent the plural form.

Refer to FIG. 1, which is a functional block diagram of a forging hand tool socket design system 100 according to an embodiment of the present invention. The forging hand tool socket design system 100 includes a user interface module 110, a design database module 120, a design knowledge base module 130, a computer-aided design software module 140, and an inference engine module 150. The forging hand tool socket design system 100 of the embodiment of the present invention can be implemented by a computer device. Specifically, the computer device includes a memory, a processor, and a hard disk. The memory is used to store a plurality of instructions, and the processor is used to load these instructions to obtain the data required for the operation from the hard disk to implement the functions of the aforementioned user interface module 110, design database module 120, design knowledge base module 130, computer-aided design software module 140 and inference engine module 150. In this embodiment, the data of the design database module 120, the design knowledge base module 130 and the computer-aided design software module 140 can be stored in the aforementioned hard disk, but the embodiments of the present invention are not limited thereto.

Please refer to FIG. 2, which is a schematic diagram of a user interface 200 of a forging tool sleeve design system 100 according to an embodiment of the present invention. The user interface module 110 is used to provide the user interface 200. The user interface 200 is used for the user to input an input parameter set through the user interface 200, or to display any calculation results, simulation results and recommended results. The input parameter set includes the end concave hole shape parameters and grade parameters of the target sleeve configuration, multiple product size parameters required by the target sleeve, material parameters, pass number parameters and over-modulus parameters. Among them, the target sleeve is the target that the user wants to design. One end of the target sleeve is a polygonal concave hole, such as a hexagon, octagon, dodecagon, star, etc. This example uses a hexagonal concave hole for illustration, and the other end is a quadrangular concave hole. The hierarchy of the target sleeve can be divided into one-level and two-level. The configuration of the first-level target sleeve is a cylindrical shape with the same outer diameter, and the configuration of the second-level target sleeve is a cylindrical shape with two outer diameters and the connection between the two outer diameters is gradually contracted or expanded. In some embodiments, the end concave hole shape parameters have hexagon, octagon, dodecagon, star, etc. for users to choose. The hierarchy parameters have one-level, two-level, etc. for users to choose. After the user selects the end recessed hole shape parameters and the hierarchical parameters, the user interface 200 displays the product size parameter categories that need to be input for the user to input. For example, after the user selects the hexagonal end recessed hole shape parameters and the first-level hierarchical parameters, the product size parameter categories that need to be input are the outer diameter, four-corner opposite sides, hexagonal opposite sides, circular hole inner diameter, length, four-corner hole depth, hexagonal hole depth, web thickness and other parameters. Material parameters include material data and wire diameter data. Material data refers to the raw material of the blank for manufacturing the forged blank. Since the blank is the disc raw material, the user must also provide the wire diameter data. The number of passes is the number of steps in the forging process, and the number of passes parameter corresponds to the number of passes. In some embodiments, the number of passes parameter has four passes, five passes, six passes, etc. for the user to choose. The over-modulus parameter is the amount by which the mold space defined by the mold in each pass is greater than the forged blank.

The design database module 120 is used to store at least one of the material database, mold material database, forging machine specification table and product specification table. The material database contains a plurality of material data, such as 50BV30, CRV6140 and other commonly used materials for various blanks. These material data in the material database can correspond to the material data for selection in the user interface. The mold material database contains a plurality of mold material data. After the system calculates the mold stress estimate corresponding to each pass of the mold, it can display the appropriate mold material data (that is, the mold material that can withstand the maximum mold stress) in the user interface for recommendation to the user based on the mold stress estimate. The forging machine specification table contains a plurality of forging machine specification data. After the system calculates the estimated forming load corresponding to each forged blank and the estimated mold stress corresponding to the mold, it can recommend suitable forging machine specification data (i.e., forging machine capable of carrying out the maximum forming load and mold stress) to the user based on the estimated forming load and mold stress. The product specification table contains multiple product specification data. These product specification data are the configuration data of the sleeve, such as the shape of the end recess of the sleeve, the hierarchy and the corresponding size category relationship. The product specification data can correspond to the end recess shape parameters, hierarchy parameters and the category of product size parameters to be input for selection in the user interface.

Referring to FIGS. 3 to 5, FIG. 3 is a schematic diagram of the blank size group and the mold size group of the forged blank corresponding to the first pass of the six-pass first-order finished sleeve generated by the forging hand tool sleeve design system according to the embodiment of the present invention, FIG. 4 is a schematic diagram of the blank size group and the mold size group of the forged blank corresponding to the second pass and the third pass of the six-pass first-order finished sleeve, and FIG. 5 is a schematic diagram of the blank size group and the mold size group of the forged blank corresponding to the fourth pass and the fifth pass of the six-pass first-order finished sleeve, and the mold size group of the mold corresponding to the sixth pass. In FIGS. 3 to 5, the blank size group and the mold size group of the mold of each pass are represented by a plurality of pass configuration size parameters, and the unit is millimeter. The design knowledge base module 130 is used to store at least one of the sleeve forging design knowledge data and the experience knowledge data.

The knowledge data of sleeve forging design includes pass design sequence rules, sleeve forging forming rules, upper bound method (UBM) and multiple formulas. The pass design sequence rule is the design sequence of each pass of the blank in forging. For example, in a four-pass forging process, the first and second passes are for shaping the blank, the third pass is for extrusion of the forging (extrusion process), and the fourth pass is for punching of the forging; in a five-pass forging process, the first and second passes are for shaping the blank, the third and fourth passes are for extrusion of the forging, and the fifth pass is for punching of the forging; in a six-pass forging process, the first and second passes are for shaping the blank, the third, fourth, and fifth passes are for extrusion of the forging, and the sixth pass is for punching of the forging. It is worth mentioning that in the extrusion process, the concave hole at either end of the extruded forging blank reaches the required depth in one pass. For example, in Figure 4, the extrusion of the hexagonal concave hole reaches the required depth (pass configuration dimension parameter H2) in the third pass (one pass); in Figure 5, the extrusion of the hexagonal concave hole and the perforation between the quadrilateral concave hole reaches the required depth (pass configuration dimension parameter H3) in the fourth pass (one pass); in Figure 5, the extrusion of the quadrilateral concave hole reaches the required depth (pass configuration dimension parameter H4) in the fifth pass (one pass). The sleeve forging forming method is that the volume of the blank remains the same in each pass. The upper limit method is applicable to the calculation of the sleeve forming load and die stress. The formula is used in the system calculation process. The empirical knowledge data is the pass configuration dimension parameters or the corresponding relationship of the pass configuration dimension parameters that are not easily changed due to the change of the product dimension parameters in each pass. For example, in Figure 4, the pass configuration dimension parameters A1 and A2 (angle) of the forged blank in the second pass are 30 degrees, and the pass configuration dimension parameter _D2 of the forged blank in the second pass is 0.8 times the pass configuration dimension parameter _D1 .

The computer-aided design software module 140 is used to store and provide at least one computer-aided design (CAD) software. In this embodiment, the computer-aided design software module is used to store and provide SolidWorks, Excel and DEFORM-3D, but the embodiments of the present invention are not limited thereto, and computer software with similar functions can also be used instead.

The inference engine module 150 is electrically connected to the user interface module 110, the design database module 120, the design knowledge base module 130 and the computer-aided design software module 140 to receive the input parameter set, and generate the forged blank size set, the mold size set, the forming load estimation and the mold stress estimation of the finished sleeve corresponding to the target sleeve at each pass according to the input parameter set, the material database, the product specification table, the sleeve forging design knowledge data and the experience knowledge data, and import the forged blank size set and the mold size set into the computer-aided design software to establish the forged blank model and the mold model, and then use the computer-aided design software to perform CAE (Computer Aided Design) on the forged blank model and the mold model. Engineering) analysis and verification to ensure the process feasibility of the forging model and mold model.

The inference engine module 150 includes a design rule calculator submodule 151, a forming force estimator submodule 152, a model stress estimator submodule 153, a forged blank builder submodule 154, and a mold builder submodule 155. The design rule calculator submodule 151 is used to generate a forged blank size set and a mold size set of a mold for each pass. The forming force estimator submodule 152 is used to calculate the forming load estimation of the forged blank in each pass. The model stress estimator submodule 153 is used to calculate the mold stress estimation of the mold in each pass. The forged blank builder submodule 154 is used to establish a forged blank model and verify its feasibility. The mold builder submodule 155 is used to establish a mold model and verify its feasibility.

Refer to FIG. 6, which is a schematic diagram of the process of the forged hand tool socket design method 600 according to an embodiment of the present invention. The following description of the forged hand tool socket design method 600 is based on the application of the forged hand tool socket design system 100, but those with ordinary knowledge in the relevant technical field can also apply the forged hand tool socket design method 600 to other similar design systems according to the following description.

In step 610, the user interface 200 is used to receive an input parameter set. The input parameter set includes the end recessed hole shape parameters and grade parameters of the target sleeve configuration as shown in FIG2, multiple product size parameters required by the target sleeve, material parameters, pass number parameters, and over-modulus parameters.

In step 620, the processor executes the function of the design rule calculator submodule 151, that is, according to the input parameter set, product specification table, pass design sequence rule in sleeve forging design knowledge data, sleeve forging forming rule and its corresponding formula, and empirical knowledge data, the volume forming amount of the blank in each pass of forging is calculated to generate the forging size group of the finished sleeve corresponding to each pass and the mold size group of the mold. In addition, the function of the design rule calculator submodule 151 also includes linkage Excel software to present the forging size group, mold size group, forming load estimation and mold stress estimation of each pass in a parametric table, wherein the parametric tables of the forging size group and the mold size group are shown in Figures 3 to 5.

Furthermore, in the process of calculating the volume forming amount of the blank in each forging pass, the processor first calculates the outer diameter of the blank in each pass according to Formula 1, and then calculates the height forming amount of the blank in each pass according to the calculated outer diameter of the blank and the sleeve forging forming rule.

Formula 1 is as follows.

D _{0 i} = D -( N _n - N _i )× K

D _0i is the outer diameter of the forged blank (in millimeters), D is the outer diameter parameter in the product size parameter (in millimeters), N _n is the number of processing passes (i.e. the number of passes minus one pass (punching step)), N _i is the number of passes for the ith time, and K is the overmodulus parameter (in millimeters). The calculation of the number of processing passes, for example, when the number of passes is 6, the number of processing passes is 5.

According to Formula 1, in Figures 3 to 5, the outer diameter of the forged blank in the first pass is 19.4 mm, the outer diameter of the forged blank in the second pass is 19.5 mm, the outer diameter of the forged blank in the third pass is 19.6 mm, the outer diameter of the forged blank in the fourth pass is 19.7 mm, and the outer diameter of the forged blank in the fifth pass is 19.8 mm. The processor calculates the outer diameter of the forged blank in each pass, and then calculates the height forming amount of each pass according to the sleeve forging forming rule that keeps the volume of the blank the same in each pass.

Please refer to FIG. 7, which is a schematic diagram of setting a first-order sleeve parting line when designing a forged hand tool sleeve according to an embodiment of the present invention. Furthermore, before the forging blank extrusion step (such as before the third pass in FIG. 4), the processor sets the parting line 700 of the blank according to the product size parameter to divide the blank into a first parting part 710 and a second parting part 720, wherein the parting line 700 is, for example, a dividing line between the upper and lower molds used when the forging blank is forged. The first parting part 710 maintains the same volume at each pass according to the sleeve forging forming rule, and the second parting part 720 maintains the same volume at each pass according to the sleeve forging forming rule. Therefore, the height forming amount of the forging blank after extrusion can be more easily calculated through the parting line 700. For example, the height parameter h ₀₃ in FIG. 7 can be obtained by formula 2.

Formula 2 is as follows.

Where D ₀₂ and D ₀₃ are the outer diameters of the forged blank in the second and third passes respectively, h ₀₁ and h ₀₂ are height parameters, A is the cross-sectional area of the end concave hole, and the length unit is millimeter.

In step 630, the processor executes the functions of the forming force estimator submodule 152 and the model stress estimator submodule 153, that is, according to the input parameter group, the forged blank size group and the mold size group corresponding to each pass, the upper limit method and its corresponding formula, the forming load estimation corresponding to each pass of the forged blank and the mold stress estimation corresponding to the mold are calculated. The forming load estimation corresponding to the forged blank size group and the mold size group of Figures 3 to 5 is shown in Table 1, and the mold stress estimation is shown in Table 2.

In step 640, the processor executes the function of the forge builder submodule 154, that is, based on the forge size group corresponding to each pass and computer-aided design software, such as SolidWorks, to generate a forge model of the forge corresponding to each pass.

In step 650, the processor executes the function of the mold builder submodule 155, that is, based on the mold dimension set corresponding to each pass and computer-aided design software, such as SolidWorks, to generate a mold model of the mold corresponding to each pass.

In step 660, the processor executes the function of the forging builder submodule 154, that is, CAE analysis and verification of the forging model of each pass is performed based on computer-aided design software, such as DEFORM-3D.

In step 670, the processor executes the function of the mold builder submodule 155, that is, CAE analysis and verification of the mold model of each pass is performed based on computer-aided design software, such as DEFORM-3D.

It is worth mentioning that if the user wants to modify any pass configuration dimension parameters of the forged blank size group or/and the mold size group of each pass, the value of the pass configuration dimension parameter in the table can be directly modified. After the modification is completed, the processor will re-execute step 640 or/and step 650 to establish a new forged blank model or/and mold model, and then execute step 660 or/and step 670 to perform CAE analysis verification based on the new forged blank model or/and mold model. The user does not need to re-draw and establish the model, which is more convenient to use.

In addition, there is no order restriction for step 640, step 650, step 660, and step 670. Users can adjust the order according to their needs.

Refer to Figures 1, 6 and 8, wherein Figure 8 is another schematic diagram of a user interface 800 of a forged hand tool socket design system 100 according to an embodiment of the present invention. In this example, the forged hand tool socket design system 100 also executes the forged hand tool socket design method 600, but the user selects a hexagonal end recessed hole shape parameter and a second-order hierarchical parameter in the user interface 800, and the input product size parameter has more minor diameter, minor diameter length, and outer diameter length than the first-order hierarchical parameter.

Refer to Figures 9 to 11, wherein Figure 9 is a schematic diagram of the forging size group of the blank and the forging blank corresponding to the first pass and the mold size group of the mold for the six-pass second-order finished sleeve generated by the forging hand tool sleeve design system according to an embodiment of the present invention, Figure 10 is a schematic diagram of the forging size group of the forging blank and the mold size group of the mold for the second and third passes of the six-pass second-order finished sleeve, and Figure 11 is a schematic diagram of the forging size group of the forging blank corresponding to the fourth and fifth passes of the six-pass second-order finished sleeve, the mold size group of the mold, and the forging size group of the forging blank corresponding to the sixth pass. In step 620, the processor executes the function of the design rule calculator submodule 151 to generate the forging size set of the forged blank and the mold size set of the mold corresponding to each pass of the finished sleeve.

Referring to FIG. 12 , it is a schematic diagram of setting a second-order sleeve parting line when designing a forged hand tool sleeve according to an embodiment of the present invention. The parting line 900 of the blank is set to divide the blank into a first parting part 910 and a second parting part 920. The height parameter h ₀₅ in FIG. 12 can be obtained by the following formulas 3, 4, and 5.

Formulas 3, 4, and 5 are shown below.

Where D ₀₂ and D ₀₃ are the outer diameters of the forging in the second and third passes respectively, D _S2 and D _S3 are the minor diameters of the forging in the second and third passes respectively, f _v1 and f _v2 are axisymmetric surface functions, h ₀₁ , h ₀₂ , h ₀₃ and h ₀₄ are height parameters, r ₁ and r ₂ are radian parameters, A is the cross-sectional area of the end concave hole, d is the depth parameter of the end concave hole, and the length unit is millimeter.

Steps 630 to 670 of designing the second-order finished sleeve are similar to steps 630 to 670 of designing the first-order finished sleeve, and will not be described in detail here.

Although the present disclosure has been disclosed as above by way of embodiments, it is not intended to limit the present disclosure. Any person with ordinary knowledge in the relevant technical field may make some changes and modifications within the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the scope defined by the attached patent application.

100: Forging hand tool socket design system 110: User interface module 120: Design database module 130: Design knowledge base module 140: Computer-aided design software module 150: Inference engine module 151: Design rule calculator submodule 152: Forming force estimator submodule 153: Model stress estimator submodule 154: Forging blank builder submodule 155: Mold builder submodule

Claims (8)

A forging hand tool socket design system includes: a design knowledge base module for storing a set of sleeve forging design knowledge data, wherein the sleeve forging design knowledge data includes a pass design sequence rule and a sleeve forging forming rule, the pass design sequence rule is the design sequence of each pass of a blank in forging, and the sleeve forging forming rule is that the volume of the blank in each pass remains the same; a memory for storing a plurality of instructions; and a processor electrically connected to the memory to load the instructions to: receive an input parameter set using a user interface, the input parameter set including a plurality of product size parameters required by a target socket , a material parameter and a pass number parameter; calculate a volume forming amount of the blank in each pass of forging according to the input parameter set, the pass design sequence rule and the sleeve forging forming rule; set a parting line of the blank according to the product size parameters to divide the blank into a first parting part and a second parting part, wherein the first parting part maintains the same volume in each pass according to the sleeve forging forming rule, and the second parting part maintains the same volume in each pass according to the sleeve forging forming rule; and generate a forging size set of a finished sleeve corresponding to the target sleeve in each pass and a mold size set of a mold. A forging hand tool socket design system as described in claim 1, wherein the input parameter set further includes an over-modulus parameter, the over-modulus parameter being the amount by which a mold space defined by the mold in each pass is greater than the forging blank. When the processor calculates the volume forming amount of the blank in each pass, the processor performs the following steps: calculating an outer diameter of a forging blank of the blank in each pass according to a formula, the formula being Di0 = D -( Nn _- Ni ₎ × K , wherein _Di0 is _the outer diameter of the forging blank, D is an outer diameter parameter among the product size parameters, _Nn is the pass quantity parameter, N _i is the number of the i-th pass, K is the over-modulus parameter; and the height forming amount of the blank in each pass is calculated according to the outer diameter of the forging blank in each pass and the sleeve forging forming rule. The forging hand tool socket design system as described in claim 1 further includes a computer-aided design software module, which is used to provide at least one computer-aided design software, wherein the processor further loads the instructions to perform: according to the forging size group corresponding to each pass, the mold size group and the at least one computer-aided design software to generate a forging model of the forging corresponding to each pass and a mold model of the mold. As described in claim 1, the forging hand tool socket design system, wherein the socket forging design knowledge data further includes an upper limit method applicable to a socket, and the processor further loads the instructions to perform: according to the input parameter set, the forging blank size set and the mold size set corresponding to each pass, and the upper limit method, a forming load estimate corresponding to the forging blank and a mold stress estimate corresponding to the mold are calculated. A forging hand tool sleeve design method is implemented by a forging hand tool sleeve design system, wherein the forging hand tool sleeve design method comprises: providing a design knowledge base module, wherein the design knowledge base module is used to store a sleeve forging design knowledge data, wherein the sleeve forging design knowledge data comprises a pass design sequence rule and a sleeve forging forming rule, wherein the pass design sequence rule is the design sequence of each pass of a blank in forging, and the sleeve forging forming rule is that the volume of the blank in each pass remains the same; using a user interface to receive an input parameter set, wherein the input parameter set comprises a plurality of product size parameters required by a target sleeve , a material parameter and a pass number parameter; calculate a volume forming amount of the blank in each pass of forging according to the input parameter set, the pass design sequence rule and the sleeve forging forming rule; set a parting line of the blank according to the product size parameters to divide the blank into a first parting part and a second parting part; the first parting part maintains the same volume in each pass according to the sleeve forging forming rule, and the second parting part maintains the same volume in each pass according to the sleeve forging forming rule; and generate a forging size set of a finished sleeve corresponding to the target sleeve in each pass and a mold size set of a mold. A method for designing a forged hand tool socket as described in claim 5, wherein the input parameter set further includes an over-modulus parameter, the over-modulus parameter being the amount by which a mold space defined by the mold in each pass is larger than the forging blank, and the step of calculating the volume forming amount of the blank in each pass includes: calculating an outer diameter of a forging blank of the blank in each pass according to a formula, the formula being Di = D - ( _Nn - _{Ni )} × K , wherein _Di is the outer diameter of the forging blank, D is an outer diameter parameter among the product size parameters, _Nn is the pass number parameter, _Ni is the i-th pass number, and K is the over-modulus parameter; and calculating a height forming amount of the blank in each pass according to the outer diameter of the forging blank of the blank in each pass and the sleeve forging forming rule. The forging hand tool socket design method as described in claim 5 further includes: providing a computer-aided design software module, the computer-aided design software module is used to provide at least one computer-aided design software; and generating a forging model of the forging corresponding to each pass and a mold model of the mold according to the forging size group corresponding to each pass, the mold size group and the at least one computer-aided design software. The forging hand tool socket design method as described in claim 5, wherein the socket forging design knowledge data further includes an upper limit method applicable to a socket, and the forging hand tool socket design method further includes: calculating a forming load estimate corresponding to the forging blank at each pass and a mold stress estimate corresponding to the mold according to the input parameter set, the forging blank size set and the mold size set corresponding to each pass, and the upper limit method.