Processing method for 3D round product

Abstract

The invention provides a processing method for a 3D (three-dimensional) circular product, which comprises the following steps of: performing cutting, turning and hot bending forming on a raw material master slice to obtain a to-be-processed product with a specified size; classifying the to-be-processed products by using inner cavity profiling classification fixtures with different sizes, and selecting inner cavity profiling positioning fixtures matched with the inner cavities of the to-be-processed products; a product to be machined is placed on the selected inner cavity profiling positioning clamp, and the flange face contour and the convex face contour of the product to be machined are machined through three-axis CNC equipment; measuring the concentricity of the inner cavity and the convex surface of the product to be processed, the flatness of the flange surface and the width of the flange surface; and the to-be-machined product with the concentricity, the flange face flatness and the flange face width reaching the standard is conveyed to the rabbet body polishing procedure. By optimizing the clamp design and the inner cavity classification process, under the condition that the product concentricity and the flange face flatness are guaranteed, accurate machining can be achieved through common CNC three-axis equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D circular product processing, and particularly to a processing method for 3D circular products. Background Art

[0002] In the production process of 3D circular products, after blanking and hot bending of the master batch, it is usually necessary to process the semi-finished products through a CNC engraving machine to remove excess materials to obtain products with concentricity and flange surface flatness meeting the requirements.

[0003] Figure 1 Shown is a schematic diagram of processing using a CNC positioning fixture in the prior art. As Figure 1 shown, the 3D circular product to be processed is placed on the positioning fixture at the bottom of the engraving machine. Since the fixture design has no accurate positioning reference, it is necessary to rely on the convex surface shape of the product to be positioned by an external L-shaped template for positioning. Due to the adopted shape positioning structure, the center of the product cavity cannot be found, and the concentricity of the product processed by this positioning method is poor and cannot be guaranteed.

[0004] Figure 2 Shown is a schematic diagram of another method of processing using a CNC positioning fixture in the prior art. As Figure 2 shown, in order to further improve the product positioning accuracy, this method uses a 5-axis CNC device to position the cavity of the 3D shape with a probe, processes the outer shape and flange positioning reference, and then flips it to another CNC machine to process the convex surface using the outer shape and flange reference for positioning, so as to meet the product size requirements. Using the probe to position the center of the cavity and first processing the outer shape and flange reference for convex surface processing, compared with Figure 1 the method shown, this method can process the concentricity of the product to a certain level, but due to the use of secondary positioning, including the positioning tolerance of the probe contact positioning and the positioning tolerance of the L-shaped template in the secondary positioning, there is a relatively large positioning tolerance. At the same time, the 5-axis CNC probe method takes a long time, requires a large number of machine tools and high costs, which hinders future mass production.

[0005] Based on this, a new solution is needed. Summary of the Invention

[0006] The purpose of the present invention is to provide a processing method for 3D circular products.

[0007] An embodiment of the present invention provides a processing method for 3D circular products, including the following steps:

[0008] Step S1: Perform blanking, turning, and hot bending on the raw material master sheet to obtain a to-be-processed product with specified dimensions;

[0009] Step S2: Classify the product to be processed using inner cavity profiling classification jigs of different sizes, and select an inner cavity profiling positioning jig that fits the inner cavity of the product to be processed;

[0010] Step S3: Place the product to be processed on the selected inner cavity profiling positioning jig, and process the flange surface and convex surface contour of the product to be processed through a 3-axis CNC device;

[0011] Step S4: Measure the concentricity of the inner cavity and convex surface, the flatness of the flange surface, and the width of the flange surface of the product to be processed;

[0012] Step S5: Send the product to be processed with the concentricity, flatness of the flange surface, and width of the flange surface meeting the standards to the body polishing process.

[0013] In the processing method for 3D circular products provided by the present invention, the inner cavity profiling classification jig includes a classification base, a classification concave cavity positioning part, and a classification concave surface profiling part that are concentrically arranged. The classification concave cavity positioning part is formed on the upper surface of the classification base, the classification concave surface profiling part is formed on the upper surface of the classification concave cavity positioning part. The outer side wall of the classification concave cavity positioning part matches the side wall of the inner cavity of the product to be processed, the lower surface of the classification concave cavity positioning part is on the same plane as the flange surface of the product to be processed, and the upper surface of the classification concave surface profiling part matches the concave surface of the inner cavity of the product to be processed.

[0014] In the processing method for 3D circular products provided by the present invention, the inner cavity profiling classification jig further includes classification vacuum holes that penetrate the lower surface of the classification base and the upper surface of the classification concave cavity positioning part and are concentric with the classification base. The classification concave surface profiling part further includes a classification cavity that penetrates the upper surface and the lower surface of the classification concave surface profiling part and is concentric with the classification concave surface profiling part. The diameter of the classification cavity is larger than the diameter of the classification vacuum hole.

[0015] In the processing method for 3D circular products provided by the present invention, Step S2 includes:

[0016] Step S21: Place the concave surface of the product to be processed downward and centered on the inner cavity profiling classification jig;

[0017] Step S22: Press the product to be processed downward. If the product to be processed deflects and the processed product cannot be placed in the inner cavity profiling classification jig, proceed to Step S23. If the product to be processed loosens in the inner cavity profiling classification jig after being placed in the jig, proceed to Step S24. If the product to be processed does not loosen in the inner cavity profiling classification jig after being placed in the jig, proceed to Step S25;

[0018] Step S23: Replace the inner cavity profiling and sorting fixture. The size of the replaced inner cavity profiling and sorting fixture is smaller than that of the fixture before replacement, and then return to Step S21;

[0019] Step S24: Replace the inner cavity profiling and sorting fixture. The size of the replaced inner cavity profiling and sorting fixture is larger than that of the fixture before replacement, and then return to Step S21;

[0020] Step S25: Select an inner cavity profiling and positioning fixture that fits the inner cavity of the product to be processed according to the determined size of the inner cavity profiling and sorting fixture.

[0021] In the processing method for 3D circular products provided by the present invention, the inner cavity profiling and positioning fixture includes a positioning base, a positioning cavity positioning part, and a positioning concave surface profiling part that are concentrically arranged. The positioning cavity positioning part is formed on the upper surface of the positioning base, and the diameter of the lower surface of the positioning cavity positioning part is larger than the diameter of the upper surface of the positioning base. The positioning concave surface profiling part is formed on the upper surface of the positioning cavity positioning part. The outer side wall of the positioning cavity positioning part matches the side wall of the inner cavity of the product to be processed, the upper surface of the positioning concave surface profiling part matches the concave surface of the inner cavity of the product to be processed, and the lower surface of the positioning cavity positioning part is located above the plane where the flange surface of the product to be processed is located.

[0022] In the processing method for 3D circular products provided by the present invention, the inner cavity profiling and positioning fixture further includes a positioning vacuum hole that penetrates the lower surface of the positioning base and the upper surface of the positioning cavity positioning part and is concentric with the positioning base. The positioning concave surface profiling part further includes a positioning cavity that penetrates the upper surface and the lower surface of the positioning concave surface profiling part and is concentric with the positioning concave surface profiling part. The diameter of the positioning cavity is larger than the diameter of the positioning vacuum hole.

[0023] In the processing method for 3D circular products provided by the present invention, in Step S3, the upper surface of the positioning concave surface profiling part contacts the concave surface of the inner cavity of the product to be processed, and the outer side wall of the positioning cavity positioning part contacts the side wall of the inner cavity of the product to be processed.

[0024] Implementing the embodiments of the present invention has the following beneficial effects: In the processing method for 3D circular products provided by the present invention, by using the inner cavity profiling classification fixture to select a suitable inner cavity profiling positioning fixture for the product to be processed before processing, it is possible to quickly judge and match the suitable fixture size according to the inner cavity characteristics of the product without directly using measuring equipment or CNC probes, providing an accurate positioning basis for subsequent processing; by designing an inner cavity profiling positioning fixture that matches the inner cavity size, the product can be positioned through the center of the concave cavity, thus ensuring stable concentricity of the product during processing; a hollow space is formed between the flange surface of the product and the lower surface of the positioning concave cavity positioning part, facilitating the processing of the flange surface of the product to be processed by the CNC equipment; by optimizing the fixture design and inner cavity classification process, the dependence on high-end equipment can be effectively reduced; an ordinary CNC 3-axis equipment can realize the processing of complex products through precise clamping and reasonable processing paths, reducing the equipment input cost during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 The figure shows a schematic diagram of processing using a CNC positioning fixture adopted in the prior art;

[0027] Figure 2 The figure shows a schematic diagram of another method of processing using a CNC positioning fixture adopted in the prior art;

[0028] Figure 3 The figure shows a schematic flow diagram of the processing method for 3D circular products provided by the present invention;

[0029] Figure 4 The figure shows a schematic structural diagram and a sectional view of the inner cavity profiling classification fixture of the processing method for 3D circular products provided by the present invention when a product to be processed is installed;

[0030] Figure 5 The figure shows a schematic structural diagram of the inner cavity profiling positioning fixture of the processing method for 3D circular products provided by the present invention;

[0031] Figure 6 The figure shows a side view of the inner cavity profiling positioning fixture of the processing method for 3D circular products provided by the present invention;

[0032] Figure 7The figure shows a sectional view of the internal cavity profiling positioning fixture for the processing method of 3D circular products provided by the present invention when a product to be processed is installed. Detailed implementation manners

[0033] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant accompanying drawings. Typical embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present application will be thorough and comprehensive.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0035] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. Without conflict, the technical features in the embodiments of the present invention and the embodiments can be combined with each other.

[0036] Figure 3 The figure shows a flowchart of the processing method for 3D circular products provided by the present invention. As Figure 3 shown, the processing method for 3D circular products provided by the embodiments of the present invention includes the following steps:

[0037] Step S1: Perform blanking, turning, and hot bending on the raw material master sheet to obtain a product to be processed with specified dimensions;

[0038] Specifically, in this embodiment, first, cut out the required part from the raw material master sheet. During blanking, precise measurement is required to ensure that the cut part meets the design dimensions to avoid waste or unqualified situations in subsequent processes. Then, turn the blanked material to make it reach the specified circular dimensions. During this process, a lathe or a CNC lathe is used for precision machining to ensure that the shape and dimensions of the circle meet the standard requirements. Subsequently, by heating the material, it becomes soft and can be bent into shape according to the design requirements. During the hot bending process, factors such as temperature, bending angle, and bending radius need to be precisely controlled to ensure that the product has no cracks, deformations, or unevenness. Thus, a product to be processed with shape and dimensions meeting the design requirements is formed, but the concentricity and flange flatness of this product still need further processing and adjustment.

[0039] Step S2: Classify the product to be processed using inner cavity profiling classification jigs of different sizes, and select an inner cavity profiling positioning jig that fits the inner cavity of the product to be processed.

[0040] Specifically, in this embodiment, inner cavity profiling positioning jigs of different sizes are designed to achieve the processing and adjustment of the concentricity and flange flatness of the product. Therefore, before processing, it is necessary to classify the product to be processed using a supporting inner cavity profiling classification jig and select an inner cavity profiling positioning jig that fits it.

[0041] Furthermore, as Figure 4 shown, the inner cavity profiling classification jig provided by the present invention includes a classification base 110, a classification concave cavity positioning portion 120, and a classification concave surface profiling portion 130 that are concentrically arranged. Among them, the classification concave cavity positioning portion 120 is formed on the upper surface of the classification base 110, the classification concave surface profiling portion 130 is formed on the upper surface of the classification concave cavity positioning portion 120. The lower surface of the classification concave cavity positioning portion 120 is on the same plane as the flange surface of the product to be processed. The outer side wall of the classification concave cavity positioning portion 120 matches the side wall of the inner cavity of the product to be processed, and the upper surface of the classification concave surface profiling portion 130 matches the concave surface of the inner cavity of the product to be processed. Here, the so-called matching means that after the product to be processed is installed in the inner cavity profiling classification jig, the side wall of the inner cavity of the product to be processed is closely attached to the outer side wall of the classification concave cavity positioning portion 120, and the concave surface of the inner cavity of the product to be processed is closely attached to the upper surface of the classification concave surface profiling portion 130. Thus, the central positioning of the product with respect to the concave inner cavity is achieved through the classification concave cavity positioning portion and the classification concave surface profiling portion. In this way, the discrimination of the size of the inner cavity of the product is realized without directly using a measuring device and a CNC probe.

[0042] Furthermore, in this embodiment, the inner cavity profiling classification jig further includes a classification vacuum hole 140 that penetrates the lower surface of the classification base and the upper surface of the classification concave cavity positioning portion and is concentric with the classification base. The classification concave surface profiling portion further includes a classification cavity 150 that penetrates the upper surface and the lower surface of the classification concave surface profiling portion and is concentric with the classification concave surface profiling portion. The diameter of the classification cavity is larger than the diameter of the classification vacuum hole.

[0043] In this embodiment, the base is the supporting part of the entire fixture. It provides stable support to ensure that the fixture does not shift during operation. The classification bases are concentric, that is, all other parts (such as the positioning part and the profiling part) are designed and arranged centered on the base. The classification cavity positioning part 120 is located on the upper surface of the classification base. It docks with the flange surface of the product to be processed, thereby ensuring the positioning accuracy of the product in the fixture; the outer sidewall of the classification cavity positioning part closely matches the inner cavity sidewall of the product to be processed, which can effectively ensure that the product does not shift or shake during processing. The classification concave profiling part 130 ensures accurate positioning of the inner cavity of the product by closely contacting the concave surface of the inner cavity of the product to be processed. At the same time, in order to facilitate fixing and positioning of the product, the fixture is designed with a vacuum adsorption function. The classification vacuum holes penetrate through the classification base and can adsorb the product to be processed through vacuum to ensure its stability in the fixture. The classification cavity is concentric with the concave profiling part and can provide suction to help fix the product and prevent errors caused by the instability of the fixture.

[0044] Furthermore, in this embodiment, the products to be processed after hot bending are classified using the inner cavity profiling classification fixture. The diameters of the sidewalls of the bases of different inner cavity profiling classification fixtures are different. For example, they differ by 0.02 mm. Place the product with the concave surface facing down and centered on the fixture, simultaneously touch both ends of the product with two fingers, and use one of the fingers to press downwards. Adsorption is achieved through the vacuum holes. For products that cannot be pressed in, it indicates that the size of the inner cavity profiling classification fixture is too large, and a smaller-sized inner cavity profiling classification fixture needs to be replaced; for products with looseness, it indicates that the size of the inner cavity profiling classification fixture is too small, and a larger-sized inner cavity profiling classification fixture needs to be replaced; for products without looseness, it indicates that the size of the inner cavity profiling classification fixture is appropriate. Thus, by flexibly adjusting the size of the fixture, the problem that different products cannot be adapted to the standard fixture due to size differences is solved. It enables products with different inner cavity sizes to be processed by selecting the appropriate fixture without relying on precise measuring equipment, which not only saves time but also improves production efficiency. Especially in mass production, the application of this fixture can greatly improve the automation level and accuracy of the production line. Therefore, step S2 includes:

[0045] Step S21: Place the product to be processed with the concave surface facing down and centered on the inner cavity profiling classification fixture;

[0046] Step S22: Press down the product to be processed. If the product to be processed deflects and cannot be placed in the inner cavity profiling classification fixture, proceed to step S23. If the product to be processed loosens in the inner cavity profiling classification fixture after being placed in the fixture, proceed to step S24. If the product to be processed does not loosen in the inner cavity profiling classification fixture after being placed in the fixture, proceed to step S25;

[0047] Step S23: Replace the inner cavity profiling and sorting fixture. The size of the replaced inner cavity profiling and sorting fixture is smaller than that of the fixture before replacement. Return to Step S21;

[0048] Step S24: Replace the inner cavity profiling and sorting fixture. The size of the replaced inner cavity profiling and sorting fixture is larger than that of the fixture before replacement. Return to Step S21;

[0049] Step S25: Select an inner cavity profiling and positioning fixture that is adapted to the inner cavity of the product to be machined according to the determined size of the inner cavity profiling and sorting fixture.

[0050] In this embodiment, a suitable positioning fixture is selected for the product to be machined through the inner cavity profiling and sorting fixture to ensure that the product can be accurately positioned during the machining process, especially to ensure its concentricity and flange flatness. Through the inner cavity profiling and sorting fixture, without directly using a measuring device or a CNC probe, the appropriate fixture size can be quickly judged and matched according to the inner cavity characteristics of the product, providing an accurate positioning basis for subsequent machining.

[0051] Step S3: Place the product to be machined on the selected inner cavity profiling and positioning fixture, and machine the flange surface and convex surface profile of the product to be machined through a 3-axis CNC device;

[0052] Specifically, in this embodiment, after classifying the product to be machined through the supporting inner cavity profiling and sorting fixture and selecting the appropriate inner cavity profiling and positioning fixture, use this inner cavity profiling and positioning fixture and a 3-axis CNC device to machine the product to be machined.

[0053] Further, in an embodiment of the present invention, as Figures 5 - 7As shown, the inner cavity profiling positioning fixture includes a positioning base 210, a positioning concave cavity positioning portion 220, and a positioning concave surface profiling portion 230 that are concentrically arranged. The positioning concave cavity positioning portion 220 is formed on the upper surface of the positioning base 210, and the positioning concave surface profiling portion 230 is formed on the upper surface of the positioning concave cavity positioning portion 220. The outer sidewall of the positioning concave cavity positioning portion matches the sidewall of the inner cavity of the product to be processed, and the upper surface of the positioning concave surface profiling portion matches the concave surface of the inner cavity of the product to be processed. By closely matching the outer sidewall of the positioning concave cavity positioning portion with the sidewall of the inner cavity of the product to be processed and the positioning concave surface profiling portion being in close contact with the concave surface of the inner cavity of the product to be processed, it can effectively ensure that the product does not shift or shake during the processing, ensuring that the inner cavity of the product is concentric with the fixture, and thus guaranteeing the concentricity of the product. The diameter of the lower surface of the positioning concave cavity positioning portion 220 is greater than the diameter of the upper surface of the positioning base 210 and the lower surface of the positioning concave cavity positioning portion is above the plane where the flange surface of the product to be processed is located. Thus, when the product is installed on the inner cavity profiling positioning fixture, the upper surface of the positioning concave surface profiling portion contacts the concave surface of the inner cavity of the product to be processed, and the outer sidewall of the positioning concave cavity positioning portion contacts the sidewall of the inner cavity of the product to be processed. At the same time, a hollow space is formed between the flange surface of the product and the lower surface of the positioning concave cavity positioning portion, facilitating the processing of the flange surface of the product to be processed by the CNC equipment. At the same time, since the inner cavity profiling positioning fixture realizes the positioning of the inner cavity of the product to be processed, when performing convex surface contour processing, only a 3-axis CNC equipment is required to achieve it.

[0054] In this embodiment, the positioning base serves as the base for supporting the entire fixture and the product to be processed, and its upper surface is the installation surface of the positioning concave cavity positioning portion. The outer sidewall of the positioning concave cavity positioning portion is closely fitted with the sidewall of the inner cavity of the product to be processed. With this structure, the fixture can ensure that the inner cavity of the product is concentric with the fixture and prevent offset during the processing. The positioning concave surface profiling portion provides further stability by contacting the concave surface of the inner cavity of the product to be processed, ensuring no shaking during the processing. Through the design that the lower surface of the positioning concave cavity positioning portion is higher than the flange surface of the product to be processed, during the processing of the flange surface, the close fit between the fixture and the product can be maintained, while avoiding interference between the fixture and the processing surface, ensuring the smooth processing of the flange surface. Thus, through the precise fixture design and in combination with a 3-axis CNC equipment, high-precision processing of the product can be achieved, especially for the processing of the flange surface and the convex surface contour, while ensuring the concentricity and stability of the product during the processing. Traditional processing methods usually require the use of a 5-axis CNC equipment combined with a probe for positioning and processing of the product, but this design solution can use only a 3-axis CNC equipment for processing through the reasonable structure of the inner cavity profiling positioning fixture, thereby reducing the cost of equipment investment.

[0055] Furthermore, in an embodiment of the present invention, the inner cavity profiling positioning fixture further includes a positioning vacuum hole 240 that penetrates the lower surface of the positioning base and the upper surface of the positioning cavity positioning portion and is concentric with the positioning base. The positioning concave surface profiling portion further includes a positioning cavity 250 that penetrates the upper surface and the lower surface of the positioning concave surface profiling portion and is concentric with the positioning concave surface profiling portion. The diameter of the positioning cavity is larger than the diameter of the positioning vacuum hole. The vacuum hole is located between the lower surface of the positioning base and the upper surface of the positioning cavity positioning portion. The product to be processed can be better fixed on the fixture by means of vacuum adsorption. During the processing, the vacuum hole provides an additional fixing force, making the contact between the product and the fixture closer, thereby reducing the vibration and offset during processing. The positioning concave surface profiling portion is provided with a positioning cavity concentric with it. Through this cavity design, the stability of the fixture can be further improved, enabling the inner cavity profiling positioning fixture to more effectively position the inner cavity of the product. The diameter of the positioning cavity is larger than the diameter of the vacuum hole. Such a design not only increases the adsorption force but also helps to improve the overall positioning effect.

[0056] In this embodiment, through the design of the inner cavity profiling positioning fixture, it is ensured that the product to be processed is concentric with the fixture and prevents offset during the processing, thereby improving the concentricity of the product and ensuring the accuracy of the machining of the flange surface and the convex surface contour. Compared with the traditional positioning method that requires a 5-axis CNC device and a probe, the present invention only needs to use a 3-axis CNC device, greatly reducing the equipment investment and lowering the cost.

[0057] Step S4: Measure the concentricity of the inner cavity and the convex surface of the product to be processed, the flatness of the flange surface, and the width of the flange surface;

[0058] Specifically, in this embodiment, through measurement, it is ensured that the dimensions and geometric accuracies of the product meet the design requirements, especially the accuracies of key parts such as the inner cavity, the center of the convex surface, and the flange surface. Whether the inner cavity of the product is concentric with the center of the convex surface directly affects the overall shape and function of the product. Especially during the assembly process, if the concentricity is not good, it may lead to non-matching or malfunction. The flatness of the flange surface is the key to ensuring that the product can be stably installed on other components. The width of the flange surface is directly related to the contact surface and the mating accuracy of the part during assembly.

[0059] Step S5: Send the product to be processed whose concentricity, flatness of the flange surface, and width of the flange surface meet the standards to the body polishing process.

[0060] Specifically, in this embodiment, after all products meeting the quality standards pass the measurement, they can enter the next process for body polishing to ensure that the final product quality meets the customer or design requirements. Through the polishing process, the product surface becomes smoother, without scratches and defects, improving the appearance quality. The polished product not only has a more beautiful appearance, but also can reduce friction and improve durability.

[0061] The processing method for 3D circular products provided by the present invention has the following advantages:

[0062] 1. Through the inner cavity profiling classification fixture, without directly using measuring equipment or CNC probes, the suitable fixture size can be quickly judged and matched according to the inner cavity characteristics of the product, providing an accurate positioning basis for subsequent processing;

[0063] 2. By designing an inner cavity profiling positioning fixture matching the inner cavity size, the product can be positioned through the center of the concave cavity, thus ensuring stable concentricity of the product during processing; this positioning method can minimize the offset of the product during clamping, ensure the concentricity of the inner and outer diameters of the product, and avoid processing errors caused by poor concentricity; a hollow space is formed between the flange surface of the product and the lower surface of the positioning concave cavity positioning part, facilitating the processing of the flange surface of the product to be processed by the CNC equipment;

[0064] 3. By optimizing the fixture design and inner cavity classification process, the dependence on high-end equipment (such as CT and five-axis machines) can be effectively reduced; ordinary CNC 3-axis equipment can realize the processing of complex products through precise clamping and reasonable processing paths, reducing the equipment input cost during the production process.

[0065] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0066] Similarly, it should be understood that, in order to streamline this disclosure and assist in understanding one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting the intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, the inventive aspects lie in less than all the features of the single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim itself serves as a separate embodiment of the present invention.

[0067] In addition, those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments and not others, combinations of features of different embodiments are meant to be within the scope of the present invention and form different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

[0068] It should be noted that the above embodiments illustrate the present invention rather than limit the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names.

Claims

1. A processing method for 3D circular products, characterized in that: The following steps are involved: Step S1, cutting, turning and hot bending the raw material master sheet to obtain a product to be processed with a specified size; Step S2, using inner cavity profiling classification fixtures of different sizes to classify the products to be processed, and selecting an inner cavity profiling positioning fixture that is compatible with the inner cavity of the products to be processed; Step S3, placing the product to be processed on the selected inner cavity profiling positioning fixture, and processing the flange surface and convex surface contour of the product to be processed by a 3-axis CNC device; Step S4, measuring the concentricity of the inner cavity and the convex surface, the flatness of the flange surface and the width of the flange surface of the product to be processed; Step S5, sending the product to be processed whose concentricity, flange surface flatness and flange surface width meet the standards to a body polishing process.

2. The processing method for 3D circular products according to claim 1, characterized in that: The inner cavity profiling classification fixture includes a concentrically arranged classification base, a classification cavity positioning portion and a classification concave surface profiling portion, the classification cavity positioning portion is formed on the upper surface of the classification base, the classification concave surface profiling portion is formed on the upper surface of the classification cavity positioning portion, the outer side wall of the classification cavity positioning portion matches the side wall of the inner cavity of the product to be processed, the lower surface of the classification cavity positioning portion is on the same plane as the flange surface of the product to be processed, and the upper surface of the classification concave surface profiling portion matches the concave surface of the inner cavity of the product to be processed.

3. The processing method for 3D circular products according to claim 2, characterized in that: The inner cavity profiling classification fixture also includes a classification vacuum hole that passes through the lower surface of the classification base and the upper surface of the classification concave cavity positioning portion and is concentric with the classification base. The classification concave surface profiling portion also includes a classification cavity that passes through the upper and lower surfaces of the classification concave surface profiling portion and is concentric with the classification concave surface profiling portion. The diameter of the classification cavity is larger than the diameter of the classification vacuum hole.

4. The processing method for 3D circular products according to claim 2, characterized in that: The step S2 comprises: Step S21, placing the product to be processed with the concave surface facing downward and centered on the inner cavity profiling classification fixture; Step S22, pressing the product to be processed downwards, if the product to be processed is deflected, the processed product cannot be placed in the inner cavity profiling classification fixture, then proceeding to step S23, if the product to be processed is loosened in the inner cavity profiling classification fixture after being placed in the inner cavity profiling classification fixture, then proceeding to step S24, if the product to be processed is not loosened in the inner cavity profiling classification fixture after being placed in the inner cavity profiling classification fixture, then proceeding to step S25; Step S23, replacing the inner cavity profiling classification fixture, the size of the inner cavity profiling classification fixture after replacement is smaller than the size of the inner cavity profiling classification fixture before replacement, and returning to step S21; Step S24, replacing the inner cavity profiling classification fixture, the size of the inner cavity profiling classification fixture after replacement is larger than the size of the inner cavity profiling classification fixture before replacement, and returning to step S21; Step S25, selecting an inner cavity profiling and positioning fixture that matches the inner cavity of the product to be processed according to the determined size of the inner cavity profiling and classification fixture.

5. The processing method for 3D circular products according to claim 1, characterized in that: The inner cavity profiling positioning fixture includes a concentrically arranged positioning base, a positioning cavity positioning portion and a positioning concave surface profiling portion, the positioning cavity positioning portion is formed on the upper surface of the positioning base and the diameter of the lower surface of the positioning cavity positioning portion is larger than the diameter of the upper surface of the positioning base, the positioning concave surface profiling portion is formed on the upper surface of the positioning cavity positioning portion, the outer side wall of the positioning cavity positioning portion matches the side wall of the inner cavity of the product to be processed, the upper surface of the positioning concave surface profiling portion matches the concave surface of the inner cavity of the product to be processed, and the lower surface of the positioning cavity positioning portion is located above the plane where the flange surface of the product to be processed is located.

6. The processing method for 3D circular products according to claim 5, characterized in that: The inner cavity profiling positioning fixture also includes a positioning vacuum hole that passes through the lower surface of the positioning base and the upper surface of the positioning cavity positioning portion and is concentric with the positioning base. The positioning concave surface profiling portion also includes a positioning cavity that passes through the upper and lower surfaces of the positioning concave surface profiling portion and is concentric with the positioning concave surface profiling portion. The diameter of the positioning cavity is larger than the diameter of the positioning vacuum hole.

7. The processing method for 3D circular products according to claim 5, characterized in that: In step S3, the upper surface of the positioning concave surface profiling portion contacts the concave surface of the inner cavity of the product to be processed, and the outer side wall of the positioning concave cavity positioning portion contacts the side wall of the inner cavity of the product to be processed.

Images