A design method and a processing tool for trial-manufacturing a sample

Abstract

The application relates to a design method and a tool for processing a trial sample machining tool, and the method comprises the following steps: according to a trial sample to be prepared, machining is performed on a tool body to form a body cavity matched with the trial sample; the body cavity is configured to clamp the trial sample; according to the body cavity, a first region corresponding to a first feature of the trial sample is determined, and a reference position is selected on the first region; the reference position is configured to facilitate the body cavity to be matched with the first feature of the trial sample to be positioned when the trial sample is clamped; according to the body cavity, a second region corresponding to a second feature of the trial sample is determined, and a fixing position is formed by machining on the second region; the fixing position is configured to facilitate the body cavity to be bonded with the second feature of the trial sample to fix the trial sample. Through the method provided by the application, the machining area of the tool in the prior art is limited, the process is complex, the efficiency is low, and the machining error is large.

Description

Technical Field

[0001] This application relates to the field of automotive tooling R&D technology, specifically to a design method and tooling for processing prototype parts. Background Technology

[0002] In the process of developing new automobiles, it is usually necessary to make some prototype parts for vehicle testing. These prototype parts are mostly irregularly shaped parts, and require at least two or more clamping and processing operations to complete the production of the prototype. Except for the first clamping, which can be done by using the blank itself with a vise, most of the other clamping operations require the design of tooling to implement positioning and fixation.

[0003] Existing tooling uses clamping elements with pressure plates and threaded mechanisms to fix the workpiece and then process it to obtain a prototype. However, using this clamping element occupies the workpiece's processing space during the processing, resulting in a limited processing area and affecting the processing process. It is necessary to add a process to pre-process the area clamped by the clamping element, which increases the complexity and cycle time of the processing and introduces additional processing errors. Summary of the Invention

[0004] One objective of this invention is to provide a design method for a tooling for processing prototypes, in order to solve many shortcomings of existing tooling, such as limited processing area, complex procedures, low efficiency, and large processing errors. Another objective is to provide a tooling that achieves simple clamping, fewer procedures, shorter processing cycle, and higher clamping efficiency during the clamping and processing of prototypes.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] The first aspect of this invention proposes a design method for tooling for processing prototype parts, comprising the following steps:

[0007] Based on the prototype to be prepared, the tooling body is machined to form a body cavity that matches the prototype; the body cavity is configured to clamp the prototype.

[0008] Based on the body cavity, a first region corresponding to the first feature of the prototype is determined, and a reference position is selected on the first region; the reference position is configured to facilitate the fitting of the body cavity with the first feature of the prototype for positioning when clamping the prototype.

[0009] Based on the body cavity, a second region corresponding to the second feature of the prototype is determined, and a fixing position is formed on the second region; the fixing position is configured to facilitate the bonding of the body cavity and the second feature of the prototype to fix the prototype.

[0010] In a preferred embodiment, the step of machining the tooling body according to the prototype to be prepared to form a body cavity that matches the prototype includes:

[0011] Based on the prototype to be prepared, the workpiece is processed to form an initial model that matches the prototype;

[0012] Using 3D modeling software, Boolean operations are performed between the initial model and the tooling body to establish a 3D model of the tooling with a preset interference amount;

[0013] Based on the three-dimensional model, a body cavity matching the initial model is machined on the tooling body;

[0014] Wherein, the preset interference amount is the distance between the workpiece and the tooling when the initial model is clamped in the body cavity.

[0015] In a preferred embodiment, the step of machining the tooling body according to the prototype to be prepared to form a body cavity that matches the prototype includes:

[0016] Based on the material properties and processing requirements of the prototype to be prepared, a tooling body made of plastic material is selected.

[0017] The selected tooling body is processed to form a body cavity that matches the prototype.

[0018] In a preferred embodiment, the step of determining a second region corresponding to the second feature of the prototype based on the body cavity, and processing the second region to form a fixed position, includes:

[0019] Local excavation operations are performed intermittently in the second region to obtain fixed points distributed at intervals;

[0020] Apply slow-drying adhesive to each of the fixing points;

[0021] The slow-drying adhesive is gradually filled into the fixing point until the surface of the fixing point is flush with the surface of the second feature of the prototype, thus forming the fixing position.

[0022] In a preferred embodiment, the step of determining a first region corresponding to a first feature of the prototype based on the body cavity, and selecting a reference position on the first region, includes:

[0023] Determine the location of the first region;

[0024] Cut the tooling body from its end toward the first region;

[0025] Keeping the cutting direction parallel, cut until it connects with the bottom surface of the first area, forming a detection position flush with the bottom surface of the first area.

[0026] In a preferred embodiment, the step of determining a first region corresponding to a first feature of the prototype based on the body cavity, and selecting a reference position on the first region, includes:

[0027] A first cutting surface is obtained by cutting along the direction of the body cavity from at least one end of the tooling body to the surface of the tooling body where the body cavity is located.

[0028] A fixed distance is cut downwards along the first cutting surface to form a disassembly position; the fixed distance is configured to match the height of the pry bar.

[0029] In a preferred embodiment, the method further includes:

[0030] Based on the reference position, the fixed position, the detection position, and the disassembly position, a clearance position is determined within the body cavity; the clearance position is configured to be located in other areas within the body cavity besides the reference position, the fixed position, the detection position, and the disassembly position.

[0031] At least one side of the clearance space is hollowed out so that when the prototype is clamped in the body cavity, the prototype does not contact at least one side of the body cavity.

[0032] In a preferred embodiment, determining a first region corresponding to a first feature of the prototype based on the body cavity, and selecting a reference position on the first region, includes:

[0033] The part where the reference position first contacts the first feature is cut to obtain a reference position with a height smaller than the first feature.

[0034] In a preferred embodiment, the design method further includes the following steps:

[0035] Align the first feature of the initial model on the workpiece with the first region of the body cavity;

[0036] Align the second feature of the initial model on the workpiece with the second region of the body cavity;

[0037] The initial model on the workpiece is clamped into the body cavity;

[0038] The workpiece located outside the body cavity is cut to obtain a prototype.

[0039] The second aspect of the present invention provides a tooling, including a tooling body, wherein a body cavity is formed within the tooling body, and the body cavity is prepared by the design method for tooling for processing prototypes provided in the first aspect of the present invention.

[0040] The tooling described above has the same advantages over existing technologies as the design method for tooling used in prototype manufacturing, and will not be repeated here.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0042] This invention provides a design method for a tooling for processing prototypes, comprising the following steps: processing a tooling body according to the prototype to be prepared to form a body cavity matching the prototype; the body cavity is configured to clamp the prototype; determining a first region corresponding to a first feature of the prototype according to the body cavity, and selecting a reference position in the first region; the reference position is configured to facilitate the fitting of the body cavity with the first feature of the prototype for positioning when clamping the prototype; determining a second region corresponding to a second feature of the prototype according to the body cavity, and processing the second region to form a fixing position; the fixing position is configured to facilitate the bonding of the body cavity with the second feature of the prototype for fixing the prototype.

[0043] The method provided by this invention designs a fixture with a body cavity that matches various prototype samples. The workpiece is fixed within the fixture by the body cavity, ensuring a stable position and orientation during processing. The first and second features together constitute the overall shape of the prototype sample. The first region helps position the prototype sample within the fixture, while the second region helps fix the prototype sample, ensuring a firm connection between the prototype sample and the fixture. By designing these two regions on the body cavity, the workpiece can be accurately installed into the fixture, allowing for further processing of the workpiece outside the body cavity to obtain a prototype sample. Therefore, traditional clamping elements are not required to limit processing space, eliminating additional steps. Only the workpiece needs to be clamped into the fixture for processing of other areas of the workpiece besides the prototype sample. This results in a short processing cycle and the production of high-precision prototype samples. Attached Figure Description

[0044] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application 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.

[0045] Figure 1 This is a flowchart illustrating the steps of a design method for a prototype machining tooling as described in an embodiment of this application.

[0046] Figure 2 This is a schematic diagram of the structure of a prototype of an automobile bracket according to one embodiment of this application;

[0047] Figure 3 This is a schematic diagram of the structure of the workpiece according to an embodiment of this application;

[0048] Figure 4 This is a front view of the tooling and workpiece clamping according to an embodiment of this application;

[0049] Figure 5 This is a schematic diagram of the body cavity described in one embodiment of this application;

[0050] Figure 6 This is a schematic diagram of the overall structure of the tooling described in one embodiment of this application;

[0051] Figure 7 This is a schematic diagram of the overall structure of the tooling and workpiece clamping according to an embodiment of this application;

[0052] Figure 8 This is a schematic diagram showing the distribution of slow-drying adhesive inside the body cavity according to an embodiment of this application;

[0053] Figure 9 This is a cross-sectional view of the tooling described in one embodiment of this application from the perspective of the disassembly position;

[0054] Figure 10 This is a flowchart illustrating the clamping and machining process of tooling in the prior art as described in an embodiment of this application;

[0055] Figure 11 This is a flowchart illustrating the clamping and machining process of the tooling described in one embodiment of this application.

[0056] Explanation of reference numerals in the attached figures:

[0057] Among them, 1. Tooling body; 2. First area; 3. Fixed position; 4. Disassembly position; 5. Clearance position; 6. Body cavity; 7. Initial model; 8. Prototype; 9. Workpiece; 10. Inspection position; 11. Reference position; 12. Slow-drying adhesive; 13. Wedge rod. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] The inventor first provides a relevant explanation of the tooling mentioned in the background art; please refer to [link / reference]. Figure 10 , Figure 10 A flowchart illustrating the clamping and machining process of the tooling used in the prior art is shown. During the clamping and machining of workpiece 9, the corresponding parts of workpiece 9 and the clamping elements of the tooling need to be machined to ensure that the clamping plate can firmly fix workpiece 9 onto the tooling. Furthermore, even after workpiece 9 is combined with the tooling, the parts where workpiece 9 is combined with the clamping elements cannot be machined (e.g., cutting, milling, drilling, welding, etc.) during machining, limiting the machining area. This necessitates additional subsequent processes to machine these parts, leading to increased machining errors and poor quality of the formed prototype 8.

[0060] It is understandable that clamping is a crucial step in the preparation of prototype 8. This involves fixing the workpiece 9 in a specific position for machining operations. With the workpiece 9 fixed to the fixture, corresponding machining operations, such as cutting, drilling, milling, and welding, are performed to obtain a prototype 8 with a specific shape and size. This invention primarily proposes a design method for the clamping process, enabling the preparation of different fixtures. Using these different fixtures, different prototypes 8 can be clamped, allowing for machining operations on the fixed workpiece 9 during the clamping process.

[0061] It should be explained that the tooling mentioned in this article can refer to tools that can position and fix workpiece 9 to ensure the accurate position and stability of workpiece 9 during processing and assembly.

[0062] The workpiece 9 mentioned in this article can refer to the formed raw material or semi-finished product, which can achieve a specific shape and size through processing operations such as cutting, milling, drilling, and welding. Through multiple processing operations on the workpiece 9, the prototype 8 can be formed.

[0063] The prototype component 8 mentioned in this article can refer to prototype parts used for automotive research and development and testing. These could be parts of the vehicle body structure, engine components, chassis components, etc., to simulate the characteristics of the final product. Figure 2 Prototype 8 in the process, Figure 2 The prototype of the car bracket is shown in Figure 8.

[0064] It should also be explained that the clamping mentioned in this article can be understood as the process of fixing the workpiece 9 onto the tooling. The clamping machining mentioned in this article can be understood as the process of fixing the workpiece 9 onto the tooling and the corresponding machining operations on the workpiece 9 based on the clamping, such as cutting, machining, drilling, milling, etc., to achieve the shape, size and surface requirements of the prototype 8.

[0065] Please refer to Figure 1 As shown, Figure 1 The present disclosure illustrates a design method for a tooling system for machining a prototype 8 according to some embodiments thereof. For a better understanding of the design method of this application, please refer to... Figures 2-10 As shown, the prototype 8 is taken as an example of an automobile bracket, illustrating the overall configuration of the tooling prepared by this method, which can explain the meaning of each step to some extent.

[0066] A design method for machining tooling for prototype part 8 includes the following steps:

[0067] S1. Based on the prototype 8 to be prepared, the tooling body 1 is processed to form a body cavity 6 that matches the prototype 8; the body cavity 6 is configured to clamp the prototype 8.

[0068] S2. Based on the body cavity 6, determine the first region 2 corresponding to the first feature of the prototype 8, and select a reference position 11 on the first region 2; the reference position 11 is configured to facilitate the fitting of the body cavity 6 with the first feature of the prototype 8 for positioning when clamping the prototype 8.

[0069] S3. Based on the body cavity 6, determine the second region corresponding to the second feature of the prototype 8, and process the second region to form a fixing position 3; the fixing position 3 is configured to facilitate the bonding of the body cavity 6 and the second feature of the prototype 8 to fix the prototype 8.

[0070] Specifically, the type of prototype 8 can be selected based on product requirements. For example, it could be an automotive part with a known shape and size, such as... Figure 2The vehicle bracket is characterized in the image. The first feature and the second feature together constitute the overall shape of the prototype 8. Based on the shape and size of the prototype 8, the necessary materials and tools are prepared. Using appropriate cutting tools, the tooling body 1 is cut to the required size and shape to obtain a body cavity 6 that matches the prototype 8. The tooling body 1 and the body cavity 6 together form the tooling. The matching of the body cavity 6 with the prototype 8 can be understood as the body cavity 6 having tenons / dents that cooperate with the tenons / dents of the prototype 8. The tenon is the protruding part within the body cavity 6, and the tenon is the recessed part within the body cavity 6, such as... Figure 5 As shown, Figure 5 The diagram illustrates the configuration of the body cavity 6 when the prototype 8 is a car bracket. By clamping the prototype 8 into the body cavity 6, the prototype 8 can be fixed within the body cavity 6, maintaining the stability of the prototype 8's position and preventing it from moving or deforming during processing, thus ensuring the accuracy and consistency of the processing.

[0071] Due to differences in shape, size, and special requirements among the different prototype samples 8, the tooling (tooling body 1 and body cavity 6) are of different types. In different body cavities 6, a first region 2 corresponding to the first feature of the prototype sample 8 can be determined, and a reference position 11 is selected on the first region 2.

[0072] The first feature can be understood as an important hole or other regular feature on the workpiece 9. As a positioning feature, the first region 2 can be understood as the region in the body cavity 6 corresponding to the important hole or other regular feature on the workpiece 9. These regions can be protrusions, depressions, holes, or other structures with specific shapes and sizes. As a reference position 11, it can fit with the corresponding positioning feature on the workpiece 9 to achieve precise positioning. In different body cavities 6, a second region corresponding to the second feature of the prototype 8 is determined, and processing is performed on the second region to form a fixing position 3. The second feature can be understood as the bottom surface or the outer surface of the side wall of the workpiece 9. As a fixing feature, the second region can be understood as the region in the body cavity 6 corresponding to the bottom surface or the outer surface of the side wall of the workpiece 9. These regions can be part of the bottom wall or part of the side wall that make up the body cavity 6. As a fixing position 3, it can be bonded and clamped with the corresponding fixing feature on the workpiece 9 to ensure that the workpiece 9 will not move or loosen during processing.

[0073] In some embodiments, the second region 2 as a whole can serve as a fixing point 3. The fixing point 3 can be configured to restrict the movement of the prototype 8 within the body cavity 6. In some embodiments, the fixing point 3 can be formed by machining on the second region 2. The fixing point 3 can be configured to restrict the movement of the prototype 8 within the body cavity 6.

[0074] When selecting the reference point 11, the six-point positioning principle must also be followed. The six-point positioning principle refers to determining a unique plane in three-dimensional space through at least six non-collinear points. In some embodiments, over-positioning can be appropriately used to assist clamping when selecting the reference point 11. It is understood that the reference point 11 mentioned in this invention can also have a fixing function during the positioning process.

[0075] Thus, referring to Figure 11 As shown, Figure 11 This is a flowchart illustrating the clamping and machining process of the tooling designed for this invention. Based on the first and second features of the prototype 8, the prototype 8 is divided into two main areas—positioning and fixing—when clamped into the body cavity 6. This ensures the stable clamping and proper positioning of the workpiece 9 within the fixture. When machining the workpiece 9, only the portion of the workpiece 9 located outside the body cavity 6 needs to be processed. The body cavity 6 itself acts as a clamping element and does not occupy the machining space of the workpiece 9. This eliminates the need for additional pre-processing of the tooling and subsequent cutting processes, thus reducing machining errors during the preparation of the prototype 8.

[0076] It should be understood that the prototype 8 to be prepared in this embodiment refers to the relevant parts that need to simulate the performance of automobiles, while the prototype 8 clamped in the body cavity 6 is the prototype 8 to be processed. At this time, the prototype 8 is still located on the workpiece 9. The prototype 8 located in the body cavity 6 has the same configuration as the prototype 8 to be prepared but is at a different stage. Therefore, the configuration of the body cavity can be determined according to the prototype to be prepared. It can be understood that the processing of the body cavity 6 based on the prototype 8 mentioned in this document can refer to processing based on the configuration of the prototype 8. It can also be understood that the prototype 8 clamped in the body cavity 6 can refer to a workpiece with the same configuration as the prototype 8. After the workpiece 9 is processed accordingly, the prototype 8 on the workpiece can be separated from the workpiece 9, and the prototype 8 can be obtained. Figure 2 and Figure 3 As shown, Figure 2 An exemplary prototype 8 according to some embodiments of the present disclosure is shown, wherein the prototype 8 after being detached from the workpiece 9 is shown, the prototype 8 being an automobile bracket; Figure 3 An exemplary workpiece 9 according to some embodiments of the present disclosure is shown, in which a prototype 8 is also shown on the workpiece 9. For ease of distinction, the present invention may define the prototype 8 (i.e., the prototype 8 located on the workpiece 9) clamped within the body cavity 6 as the initial model 7. Specifically:

[0077] Step S1 specifically includes:

[0078] S11. Based on the prototype 8 to be prepared, process the workpiece 9 to form an initial model 7 that matches the prototype 8.

[0079] S12. Using 3D modeling software, perform Boolean operations on the initial model 7 and the tooling to establish a 3D model of the tooling with a preset interference amount;

[0080] S13. Based on the three-dimensional model, a body cavity 6 matching the initial model 7 is machined on the tooling body 1; wherein, the preset interference amount is the distance maintained between the workpiece 9 and the tooling when the initial model 7 is clamped in the body cavity 6.

[0081] In this embodiment, the material and size of workpiece 9 can be selected according to product requirements. An initial model 7 is machined on workpiece 9, which is the initial state of the prototype 8. Workpiece 9 is then cut to detach the initial model 7 from it, thus obtaining the prototype 8. During the machining of workpiece 9, computer-aided design software (such as 3D modeling software) can be used to design the initial model 7, drawing its geometry, dimensions, and features. The workpiece 9 is then cut according to this drawing to obtain an initial model 7 that precisely matches the prototype 8.

[0082] Similarly, when machining the body cavity 6 on the tooling body 1, the design of the body cavity 6 can be completed using 3D modeling software. In this embodiment, a 3D model of the tooling body 1 can be created. Based on the 3D model created for the initial model 7, the software's built-in Boolean operation tool is used. Boolean operations include "subtraction" or "difference" operations. The initial model 7 is used as a cutting tool, and a Boolean operation is performed between it and the tooling body 1 to "subtract" it from the tooling body 1, thus obtaining the 3D model of the tooling. This 3D model has a cavity space that matches the initial model 7. By using the geometry, size, and features of the tooling's 3D model, the tooling body 1 is cut according to the drawn graphic to obtain the body cavity 6 that precisely matches the prototype 8.

[0083] Preferably, during Boolean operations, the parameters, position, and size of the operation can be precisely controlled, and appropriate gaps or overlapping areas can be set so that the three-dimensional model of the tooling body 1 and the three-dimensional model of the initial model 7 have the required interference amount during assembly. This interference amount can be understood as follows: when the workpiece 9 is assembled into the body cavity 6, the initial model 7 on the workpiece 9 is just embedded in the body cavity 6, and the surface of the workpiece 9 where the initial model 7 is located has a distance from the surface of the tooling where the body cavity 6 is located. Figure 4The diagram shown shows the tooling and workpiece 9 after clamping. There is an interference of 2mm between them. This distance can be designed in step S12 to obtain the preset interference amount, so as to avoid collision or interference between the tooling and the initial model 7 during assembly. At the same time, it can also provide a certain slack space to adapt to the actual clamping operation and material properties, and ensure a suitable clamping and fixing effect.

[0084] Furthermore, the method also includes the following steps:

[0085] S4. Align the first feature of the initial model 7 on the workpiece 9 with the first region 2 of the body cavity 6;

[0086] S5. Align the second feature of the initial model 7 on the workpiece 9 with the second region of the body cavity 6;

[0087] S6. The initial model 7 on the workpiece 9 is clamped into the body cavity 6;

[0088] S7. Cut the workpiece 9 located outside the body cavity 6 to obtain the prototype 8.

[0089] In this embodiment, please refer to Figure 7 and Figure 11 , Figure 7 This is a schematic diagram of the overall structure for clamping the tooling and workpiece 9. The first area 2 helps to position and position the initial model 7 on the workpiece 9 within the tooling, while the second area helps to fix the initial model 7, ensuring a firm connection between the initial model 7 on the workpiece 9 and the tooling. When the workpiece 9 is placed inside the tooling, the tooling's built-in body cavity 6 acts as a clamping element to fix it. As needed, the workpiece 9 is processed using appropriate cutting tools. At this time, the initial model 7 is located inside the body cavity 6, while other parts of the workpiece 9 are located outside the body cavity 6. Processing the parts of the workpiece 9 outside the body cavity 6 allows the initial model 7 to be separated from the workpiece 9, thus achieving the preparation of the prototype 8. In some embodiments, after processing, operations such as dimensional measurement, functional testing, and material testing can be performed. In some embodiments, after processing, the fixation of the initial model 7 by the body cavity 6 can be released, and the prototype 8 can be removed. The tooling designed in this invention can ensure that the workpiece 9 is clamped smoothly and accurately, thereby achieving accurate processing operations and improving processing quality, while reducing clamping time and operation steps.

[0090] It should be noted that existing tooling is mostly steel metal fixtures, while the new product prototypes 8 are mostly produced in small batches. Steel tooling has a long manufacturing cycle, and its use is extremely inefficient for small-batch production. However, if other materials are chosen for the clamping elements, they cannot maintain sufficient clamping force; therefore, steel parts must be used uniformly. In another technical solution, step S1 includes:

[0091] S101. Based on the material characteristics and processing requirements of the prototype 8 to be prepared, select a tooling body 1 made of plastic material.

[0092] S102. The selected tooling body 1 is processed to form a body cavity 6 that matches the prototype 8.

[0093] In this embodiment, the prototype 8 can be a metal prototype 8, particularly an aluminum prototype 8. Due to the body cavity 6 configured in this invention, as described above, the body cavity 6 can tightly position and fix the workpiece 9. Therefore, by selecting a plastic tooling body 1 as the raw material for the workpiece 9, and combining it with the fixing effect of the fixing position 3, a body cavity 6 with sufficient clamping force can be prepared as a clamping element. Since plastic material is less expensive than steel and its processing and molding are relatively simple, the tooling manufacturing cycle can be greatly shortened.

[0094] Preferably, ABS (Acrylonitrile Butadiene Styrene) plastic is used. ABS plastic has high strength and rigidity, can withstand certain forces and loads, and can provide sufficient clamping force and stability to ensure the accurate position and fixation of workpiece 9 during processing. ABS plastic has good machinability and can be cut into products of various shapes and sizes, which allows for the manufacture of complex shapes and structures to meet the design requirements of different tooling. ABS plastic also has the characteristics of easy surface treatment such as spraying and film application, and the sidewalls and bottom walls (second region) of the body cavity 6 prepared by ABS plastic can better bond with the slow-drying adhesive 12 to obtain a stronger fixing effect.

[0095] As a specific explanation of this embodiment, the fixing position 3 can also have the adhesive force of the glue, such as Figure 8 As shown, Figure 8 The distribution of slow-drying adhesive 12 according to some embodiments of the present disclosure is shown, with the specific measures as follows:

[0096] Step S3 includes:

[0097] S31. Perform local excavation operations at intervals in the second region to obtain fixed points distributed at intervals;

[0098] S32. Apply slow-drying adhesive 12 to each of the fixing points;

[0099] S33. Gradually fill the fixing point with the slow-drying adhesive 12 until the surface of the fixing point is flush with the surface of the second feature of the prototype 8, forming the fixing position 3.

[0100] Specifically, the second region can be the area on the body cavity 6 corresponding to the bottom surface and outer side surface of the workpiece 9. These regions can be parts of the bottom wall and part of the side wall that make up the body cavity 6. Intermittently spaced hollowing-out treatments are made on the side wall or bottom wall of the body cavity 6, resulting in a spaced-out arrangement of fixing points. These, together with the slow-drying adhesive 12, form fixing positions 3, which together restrict the movement of the workpiece 9 within the tooling cavity, thus fixing the workpiece 9. Using the slow-drying adhesive 12, it is extruded in rows at certain intervals into the fixing points inside the tooling cavity. The workpiece 9 is then placed in according to the reference, and the adhesive dries completely in about 2 minutes, completing the clamping and positioning of the workpiece 9. The space occupied by the adhesive is precisely within the fixing points, ensuring smooth contact between the body cavity 6 and the initial model 7 of the workpiece 9, without interfering with subsequent processing.

[0101] In this embodiment, the fixing position 3 includes not only the fixing point and the slow-drying adhesive 12 within the fixing point, but also the entire second region, which can also serve as part of the fixing position 3 to fix the workpiece 9. Specifically, by using fixing points in conjunction with slow-drying adhesive 12, spaced apart at appropriate positions corresponding to the workpiece 9, a uniform load distribution can be achieved. Multiple fixing positions 3 in different combinations restrict the movement of the workpiece 9, increasing the stability of the fixation and reducing the risk of overall fixation failure due to the failure of a single fixing point. The slow-drying adhesive 12 can be more easily and evenly distributed between the fixing points and the workpiece 9, forming a uniformly distributed fixing position 3, ensuring the stability and firmness of the fixation.

[0102] It should be emphasized that, at the same time, due to the inner wall of the body cavity 6 made of plastic material, the fixing points opened on the inner wall can be better coated with slow-drying adhesive 12, and the resulting fixing position 3 has a very strong fixing ability, so that the tooling can be obtained at a lower cost and processing cycle.

[0103] As a specific explanation of this embodiment, step S1 further includes:

[0104] S100: Cut the part of the reference position 11 that first contacts the first feature to obtain a reference position 11 with a height smaller than the first feature.

[0105] In this embodiment, the reference position 11 can be understood as the part that first contacts the workpiece 9, mainly serving as an assembly positioning element and then assisting in fixation. The height of the reference position 11 can be less than the height of the first fitting feature to achieve the positioning function. It is understood that machining errors are related to instability during machining, mechanical deformation, environmental influences, and stiffness limitations. The higher the reference position 11, the greater the machining error and the increased installation resistance of the workpiece. Therefore, the reference position 11 is height-cut to maintain the difference between its height and the height of the first feature, facilitating workpiece installation, reducing the impact of machining errors, and thus improving machining accuracy and precision.

[0106] In another embodiment, such as Figure 6 As shown, Figure 6 This is a schematic diagram of the overall structure of the tooling that has been prepared.

[0107] Step S2 is followed by:

[0108] S21. Determine the location of the first region 2;

[0109] S22. Cut the tooling body from the end of the tooling body toward the first region 2;

[0110] S23. Keep the cutting direction parallel and cut until it reaches the position that connects with the bottom surface of the first region 2, forming a detection position 10 that is flush with the bottom surface of the first region 2.

[0111] In this embodiment, a detection position 10 is carved out in the body cavity 6. It can be cut from the outside of the tooling body 1 to the position of the first region 2 from the inside of the body cavity 6. It can be cut to just reach the end of the first region 2, for example, a part of the arc length of the arc edge of the circular first region 6 is cut to keep the detection position 10 and the first region 2 on the same plane. The first feature of the workpiece 9 is embedded in the first region 2. The operator can use a feeler gauge to check and adjust the fit and positioning of the workpiece 9 surface where the initial model 7 is located and the tooling surface where the body cavity 6 is located, so that the two can be accurately aligned to ensure the reliability and accuracy of the positioning.

[0112] As mentioned above, after machining workpiece 9, the fixation of the body cavity 6 to the initial model 7 can be released, and the prototype 8 can be removed. During the process of separating workpiece 9 from the tooling, such as... Figure 9 As shown, Figure 9 An exemplary fixture with a disassembly position 4 provided according to this disclosure is shown. Step S2 may include:

[0113] S24. Cut from at least one end of the tooling body 1 along the direction of the body cavity 6 to the surface of the tooling body 1 where the body cavity 6 is located, to obtain a first cutting surface;

[0114] S25. Cut a fixed distance downward along the first cutting surface to form a disassembly position 4; the fixed distance is configured to match the height of the pry bar.

[0115] In this embodiment, the disassembly position 4 is partially hollowed out. To ensure the versatility of the conical rod, the bottom surface of the disassembly position 4 is a fixed distance below the surface of the body cavity (the value of which is related to the size of the conical rod). At least one end can be designed symmetrically with the disassembly positions 4 positioned one in front of the body cavity 6 or one on the left and one on the right. The first cutting surface can refer to a local area from the corresponding end of the tooling body 1 to the location of the body cavity 6. Cutting downwards along the first cutting surface yields the disassembly position 4, with one end connected to the outside and the other end located below the surface of the body cavity 6. The disassembly position 4 corresponds to a fixed downward distance from the surface of the body cavity 6. Since the workpiece 9 is installed inside the body cavity 6, the disassembly position 4 is located at the corresponding position below the bottom of the workpiece 9. When disassembling the workpiece 9, the conical pry bar is inserted into the disassembly position 4, and a force F is applied to pry it apart from the tooling. The conical pry bar can be a wedge-shaped rod 13.

[0116] In some embodiments, steps S24 and S23 are not sequential; the processing of disassembly position 4 and detection position 10 can be performed according to processing requirements. In other embodiments, the processing of disassembly position 4 can be performed after the formation of detection position 10, that is, after step S23, it may include:

[0117] S231. Based on the position of the detection position 10, a fixed distance is cut downward along the surface of the detection position 10; the fixed distance is configured to match the height of the pry bar.

[0118] S232. Continue cutting along the end of the body cavity 6 toward the first region 2 until it reaches the interior of the first region 2, forming the disassembly position 4.

[0119] In another embodiment, the method further includes:

[0120] S8. Based on the reference position 11, the fixed position 3, the detection position 10 and the disassembly position 4, determine the clearance position 5 in the body cavity 6; the clearance position 5 is configured to be in other areas of the body cavity 6 other than the reference position 11, the fixed position 3, the detection position 10 and the disassembly position 4.

[0121] S9. At least one side of the clearance position 5 is hollowed out so that when the prototype 8 is clamped in the body cavity 6, the prototype 8 does not contact at least one side of the body cavity 6.

[0122] Specifically, all parts of the body cavity 6 except for the reference position 11, the fixed position 3, the disassembly position 4, and the detection position 10 are clearance positions 5, and the surface of the clearance position 5 is partially hollowed out. Hollowing out the clearance position 5 in the cavity can be done using cutting, milling, drilling, or other machining methods, depending on the required shape and size. Hollowing out refers to removing material from a specific area or part of the tooling cavity or a certain area of ​​the workpiece 9 to form a structure smaller than the original shape. This means that at least one side of the clearance 5 is missing a portion. When the workpiece 9 is clamped into the body cavity 6, due to the local treatment of the clearance 5, the structure where the clearance 5 is located will not be exactly engaged with the workpiece 9 in a tenon and mortise manner. The workpiece 9 will not contact at least one side of the tooling, reducing the contact surface at the location of the clearance 5, reducing the possibility of interference and friction. Under the premise of ensuring the stable installation of the workpiece 9, the contact between the workpiece 9 and the body cavity 6 is minimized to reduce the mutual influence between the tooling and the workpiece 9, thereby reducing the resistance to installation and removal of the workpiece 9 and improving the loading and unloading efficiency of the workpiece 9.

[0123] The second objective of this embodiment is to provide a tooling, characterized in that it includes a tooling body 1, wherein a body cavity 6 is provided in the tooling body 1, and the body cavity 6 is prepared by the design method for tooling for processing prototype 8 as described above.

[0124] The following example, using the prototype 8 to be processed as a car bracket, illustrates the tooling prepared by the specific implementation method of this invention: Please refer again... Figures 2-10A tooling includes a tooling body 1, within which a body cavity 6 is formed. The body cavity 6 has multiple reference positions 11, the positions of which correspond to the positions of multiple holes in a car bracket. The multiple holes in the car bracket are positioned and assembled within the body cavity 6 via the reference positions 11. Fixing positions 3 are provided on the sidewall or bottom wall of the body cavity 6 that contacts the car bracket. When the car bracket is fixed within the body cavity 6, the fixing positions 3 tightly bond the car bracket and the body cavity 6 together. The body cavity 6 includes multiple clearance positions 5, forming spaces between them, for the crossbeam position of the car bracket. Within the space formed by the plurality of clearance positions 5, the space formed by the plurality of clearance positions 5 is larger than the size of the crossbeam, such that at least one side of the plurality of clearance positions 5 does not contact the crossbeam of the car bracket; a detection position 10 is provided on the tooling body 1, the surface of the detection position 10 is at the same level as the bottom surface where the positioning reference is located, and one end of the detection position 10 is connected to the outside, and the other end extends to the edge of the bottom surface where the positioning reference is located; a disassembly position 4 is provided on the tooling body 1, the surface of the disassembly position 4 is located below the bottom of the body cavity 6, one end of the disassembly position 4 is connected to the outside, and the other end extends to the corresponding position at the bottom of the car bracket.

[0125] As for the tooling embodiment of the present invention, since it is basically similar to the design method embodiment for the tooling of the prototype 8, the description is relatively simple, and relevant parts can be referred to in the description of the method embodiment.

[0126] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0127] It should also be noted that, in this document, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device.

[0128] The foregoing has provided a detailed description of the design method and tooling for processing prototype parts provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are merely for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, those skilled in the art will recognize that various modifications may occur in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, but obvious variations or modifications derived therefrom are still within the protection scope of this application.

Claims

1. A design method for tooling used in the processing of prototype parts, characterized in that, Includes the following steps: Based on the prototype to be prepared, the tooling body is machined to form a body cavity that matches the prototype; the body cavity is configured to clamp the prototype. Based on the body cavity, a first region corresponding to the first feature of the prototype is determined, and a reference position is selected on the first region; the reference position is configured to facilitate the fitting of the body cavity with the first feature of the prototype for positioning when clamping the prototype. A first cutting surface is obtained by cutting along the direction of the body cavity from at least one end of the tooling body to the surface of the tooling body where the body cavity is located. A fixed distance is cut downwards along the first cutting surface to form a disassembly position; the fixed distance is configured to match the height of the pry bar. Based on the body cavity, a second region corresponding to the second feature of the prototype is determined, and a fixing position is formed on the second region; the fixing position is configured to facilitate the bonding of the body cavity and the second feature of the prototype to fix the prototype.

2. The design method for a tooling system for processing prototype parts according to claim 1, characterized in that, The step of machining the tooling body according to the prototype to be prepared to form a body cavity that matches the prototype includes: Based on the prototype to be prepared, the workpiece is processed to form an initial model that matches the prototype; Using 3D modeling software, Boolean operations are performed between the initial model and the tooling body to establish a 3D model of the tooling with a preset interference amount; Based on the three-dimensional model, a body cavity matching the initial model is machined on the tooling body; Wherein, the preset interference amount is the distance maintained between the workpiece and the tooling when the initial model is clamped in the body cavity.

3. The design method for a tooling system for processing prototype parts according to claim 1, characterized in that, The step of machining the tooling body according to the prototype to be prepared to form a body cavity that matches the prototype includes: Based on the material properties and processing requirements of the prototype to be prepared, a tooling body made of plastic material is selected. The selected tooling body is processed to form a body cavity that matches the prototype.

4. The design method for tooling for processing prototype parts according to claim 1, characterized in that, The step of determining a second region corresponding to the second feature of the prototype based on the body cavity, and processing the second region to form a fixed position includes: Local excavation operations are performed intermittently in the second region to obtain fixed points distributed at intervals; Apply slow-drying adhesive to each of the fixing points; The slow-drying adhesive is gradually filled into the fixing point until the surface of the fixing point is flush with the surface of the second feature of the prototype, thus forming the fixing position.

5. The design method for a tooling system for processing prototype parts according to claim 1, characterized in that, The step of determining the first region corresponding to the first feature of the prototype based on the body cavity, and selecting a reference position on the first region, includes: Determine the location of the first region; Cut the tooling body from its end toward the first region; Keep the cutting direction parallel and cut until it connects with the bottom surface of the first area, forming a detection position that is flush with the bottom surface of the first area.

6. The design method for a tooling system for processing prototype parts according to claim 5, characterized in that, The method further includes: Based on the reference position, the fixed position, the detection position, and the disassembly position, a clearance position is determined within the body cavity; the clearance position is configured to be located in other areas within the body cavity besides the reference position, the fixed position, the detection position, and the disassembly position. At least one side of the clearance space is hollowed out so that when the prototype is clamped in the body cavity, the prototype does not contact at least one side of the body cavity.

7. The design method for a tooling system for processing prototype parts according to claim 1, characterized in that, Based on the body cavity, a first region corresponding to the first feature of the prototype is determined, and a reference position is selected on the first region, including: The part where the reference position first contacts the first feature is cut to obtain a reference position with a height smaller than the first feature.

8. The design method for a tooling system for processing prototype parts according to claim 2, characterized in that, The method further includes the following steps: Align the first feature of the initial model on the workpiece with the first region of the body cavity; Align the second feature of the initial model on the workpiece with the second region of the body cavity; The initial model on the workpiece is clamped into the body cavity; The workpiece located outside the body cavity is cut to obtain a prototype.

9. A tooling, characterized in that, It includes a tooling body, wherein a body cavity is formed within the tooling body, and the body cavity is prepared by the design method for tooling for processing prototypes as described in any one of claims 1-8.

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