A method and apparatus for machining a wheel

Abstract

The application provides a wheel machining method and device, and relates to the technical field of automobile parts. The wheel machining method processes the inner side flange of the wheel with the outer side lip as the machining reference, ensures the accuracy of the position of the inner side flange, processes the appearance surface with the inner side flange as the machining reference and the preset first total length of the wheel in the axial direction as the target, realizes the first total length machining of the wheel, ensures the consistency of the multiple wheels in the axial direction, and finally forms the bright surface on the appearance surface with the inner side flange as the machining reference and the preset first total length of the wheel in the axial direction as the target, realizes the second total length machining of the wheel, avoids the adjustment of the preset feed amount of the bright surface machining, effectively improves the machining efficiency of the wheel, ensures the formation of the bright surface without affecting the overall shape of the appearance surface, and effectively improves the machining quality of the wheel.

Description

Technical Field

[0001] This invention relates to the field of vehicle parts technology, and more specifically, to a wheel processing method and equipment. Background Technology

[0002] Wheels are essential components for ensuring the normal operation of vehicles. As drivers' demands for vehicle appearance continue to increase, wheels with a smooth surface achieved through a bright finish process are becoming widely used. Currently, the overall wheel manufacturing process involves first processing the wheel blank to obtain an intermediate product wheel, and then finely finishing the surface of the intermediate product wheel to create a bright finish, resulting in a bright finish wheel.

[0003] However, current wheel manufacturing typically employs a segmented machining method, sequentially machining the inner rim, the outer rim, and the inner flange. Machining dimensional tolerances accumulate with each segment's completion, resulting in a large overall dimensional tolerance range after wheel machining and consequently, significant dimensional fluctuations. This leads to substantial discrepancies in the distance between the finished surface and the machining reference surface during subsequent finishing. Adjustments to the pre-set feed rate for finishing are necessary to maintain the wheel's dimensions, reducing machining efficiency. Furthermore, increasing the feed rate during finishing can negatively impact the surface finish, ultimately lowering the overall wheel quality. Summary of the Invention

[0004] The problem this invention addresses is how to improve the processing efficiency and quality of wheels.

[0005] To address the above problems, the present invention provides a wheel processing method and equipment.

[0006] In a first aspect, the present invention provides a wheel processing method, characterized in that it includes:

[0007] Using the outer lip of the wheel blank as the machining reference, the inner rim located at one end of the wheel along the axial direction is machined.

[0008] Using the inner rim as the machining reference and the preset first total length of the wheel along the axial direction as the target, the outer surface located at the other end of the wheel along the axial direction is machined.

[0009] Using the inner rim as the processing reference and the preset second total length of the wheel along the axial direction as the target, the outer surface is processed to form a bright surface.

[0010] Optionally, the step of machining the outer surface located at the other end of the wheel along the axial direction, using the inner rim as the machining reference and a preset first total length of the wheel along the axial direction as the target, includes:

[0011] Using the inner rim as a reference, the machining endpoint is determined according to the preset first total length;

[0012] Based on the machining endpoint and the preset first machining tolerance, the outer surface is machined using the inner rim as the machining reference.

[0013] Optionally, the step of machining the outer surface using the inner rim as a machining reference and a predetermined second total length of the wheel along the axial direction as a target, to form a bright surface on the outer surface, includes:

[0014] The second feed rate is obtained based on the difference between the preset first total length and the preset second total length;

[0015] Divide the second infeed amount to obtain the basic bright surface infeed amount and the rework allowance infeed amount;

[0016] Using the inner rim as the machining reference, a bright surface is initially machined on the outer surface according to the basic bright surface feed rate;

[0017] The wheels are painted. If the glossy finish is abnormal after painting, the surface is reworked according to the rework allowance to form the glossy finish again.

[0018] Optionally, the basic bright surface infeed amount is greater than the range value of the preset first machining tolerance; the step of machining the outer surface based on the inner rim as the machining reference and according to the basic bright surface infeed amount to form a bright surface on the outer surface includes:

[0019] Using the inner rim as a reference, the machining zero point is determined according to the preset first total length;

[0020] Based on the basic bright surface feed rate, the surface is machined with the machining zero point as the feed reference to form a bright surface.

[0021] Optionally, the step of dividing the second feed amount to obtain the basic bright surface feed amount and the rework allowance feed amount includes:

[0022] The minimum value of the basic bright surface feed amount is obtained based on the range of the preset first machining tolerance.

[0023] The axial design dimension range of the wheel is obtained based on the sum of the preset second total length and the preset second machining tolerance.

[0024] The range of the second feed rate is obtained based on the difference between the preset first total length and the axial design dimension range of the wheel;

[0025] The basic bright surface infeed amount and the rework allowance infeed amount are obtained based on the minimum value of the basic bright surface infeed amount, the preset number of rework cycles, and the range of the second infeed amount.

[0026] Optionally, after machining the outer surface and before forming a bright finish on the outer surface, the wheel machining method further includes:

[0027] Obtain a first measurement value of the axial dimension of the wheel, and calculate whether the difference between the first measurement value and the preset first total length is within a first preset range.

[0028] Optionally, when machining the outer surface, the inner rim is used as the machining reference to machine the outer rim located at the other end of the wheel along the axial direction; obtaining the first measurement value of the axial dimension of the wheel includes: obtaining the first measurement value of the axial dimension of the wheel based on the distance between the inner rim and the outer rim along the axial direction of the wheel.

[0029] Optionally, after forming a bright finish on the outer surface, the wheel processing method further includes:

[0030] Based on the distance between the outer rim and the inner rim along the axial direction of the wheel, a second measurement value of the axial dimension of the wheel is obtained, and it is calculated whether the difference between the second measurement value and the preset second total length is within a second preset range.

[0031] Optionally, after the outer surface is processed and before a glossy finish is formed on the outer surface, the wheel processing method further includes: performing a spray painting operation on the wheel.

[0032] Secondly, the present invention provides a wheel processing apparatus, including a processing unit, the processing unit being used to process a wheel according to the wheel processing method described above.

[0033] The beneficial effects of the wheel processing method of the present invention are as follows: First, the outer wheel lip formed during the blank preparation process is used as the processing reference. Since the plane where the end face of the outer wheel lip away from the inner wheel lip along the axial direction is perpendicular to the wheel's axial direction and is nearly consistent with the plane where the wheel's finished outer surface is located, it is beneficial to achieve precise processing of the inner wheel rim when processing it with the outer wheel lip as the processing reference, ensuring the positional accuracy of the inner wheel rim relative to the outer surface. Next, using the processed inner wheel rim as the processing reference, the outer surface is processed with a preset first total length of the wheel along the axial direction as the target. Since the plane where the end face of the inner wheel rim away from the outer wheel lip along the axial direction is parallel to the plane where the wheel's finished outer surface is located, processing the outer surface with the inner wheel rim as the processing reference can achieve control of the processing dimensional tolerance between the outer surface and the inner wheel rim, reducing processing errors. Moreover, since the outer surface and the inner wheel rim are located at the two ends of the wheel along the axial direction, the overall axial dimension of the wheel can be processed. Tolerance control ensures that the axial dimension of the wheel conforms to the preset first total length after machining, achieving the first fixed total length machining of the wheel. This avoids large cumulative tolerances, ensures the consistency of axial dimensions among multiple wheels with consecutively machined appearance surfaces, reduces the fluctuation range of the wheel's axial machining dimensions, and helps guarantee the machining quality of the wheel after subsequent bright surface machining. Finally, using the machined inner rim as the machining reference, and with the preset second total length of the wheel along the axial direction as the target, the appearance surface is brightly machined. Since the first fixed total length machining of the wheel ensures that the distance between the appearance surface and the machining reference surface is within the preset fluctuation range of the wheel's corresponding design dimensions, effective bright surface machining can be achieved without adjusting the preset feed rate for bright surface machining. This ensures that the axial dimension of the wheel conforms to the preset second total length after machining, achieving the second fixed total length machining of the wheel. This ensures the formation of a bright surface without affecting the overall shape of the appearance surface, effectively improving the machining quality of the wheel. Attached Figure Description

[0034] Figure 1 This is a flowchart of the wheel processing method in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the wheel structure in an embodiment of the present invention;

[0036] Figure 3 for Figure 2 The cross-sectional structural diagram shown from view A;

[0037] Figure 4 This is a schematic diagram illustrating the machining of the inner rim of a wheel in an embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram illustrating the machining of the outer surface of the wheel in an embodiment of the present invention;

[0039] Figure 6 This is a finished machining view of the outer surface of the wheel in an embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the glossy finish processing of the exterior surface in an embodiment of the present invention;

[0041] Figure 8 for Figure 1 The sub-flowchart of S2 shown in the figure;

[0042] Figure 9 for Figure 1 The sub-flowchart of S3 shown in the figure;

[0043] Figure 10 This is a schematic diagram of the machining of the wheel mounting holes in an embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Wheel; 11. Inner rim; 12. Outer surface; 13. Outer rim; 14. Rim; 15. Spoke; 16. Mounting surface; 17. Center hole; 18. Mounting hole; 2. Outer lip; 3. Machining tool. Detailed Implementation

[0046] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0047] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing upward and the negative direction representing downward. The X-axis represents the horizontal direction and is designated as front and back, with the positive direction of the X-axis representing the front and the negative direction representing the back. The Y-axis represents the left and right direction, with the positive direction of the Y-axis representing the right and the negative direction representing the left. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing the invention and for 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; therefore, they should not be construed as limitations on the invention.

[0048] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0049] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0050] In related technologies, when a wheel is mounted on a vehicle, an inner rim 11, a rim 14, and an outer rim 13 are distributed sequentially from the inside to the outside along the width direction of the vehicle, i.e., the wheel's axial direction. When roughing the wheel blank, the inner rim 11, rim 14, and outer rim 13 are usually processed in sections. During the separate processing of each component, the axial dimensional tolerance is controlled. As a result, after the roughing of the wheel, the axial dimensional tolerance is accumulated from the dimensional tolerances controlled during the separate processing of the components. The accumulated dimensional tolerance is often large, especially when the processing errors of the inner rim 11 and rim 14 are large. This results in a large range of axial dimensional tolerance after the roughing of the wheel, ultimately causing a large fluctuation range in the axial dimension of the wheel after roughing. Consequently, the axial distance between the machining reference surface of the wheel finish machining and the outer surface 12 of the wheel 1 fluctuates significantly. Thus, during the subsequent finishing of wheel 1, since the position of the machining reference surface is fixed, and the preset feed rate for finishing is determined based on the axial design dimension of wheel 1 and the position of the machining reference surface, fluctuations in the axial dimension of the wheel can cause fluctuations in the distance between the outer surface 12 and the machining reference surface, potentially leading to significant errors in the finishing process. For example, when using the inner rim 11 as the machining reference for bright finishing of the outer surface 12, if the distance between the outer surface 12 and the machining reference surface is less than the corresponding design dimension of wheel 1, the finishing process may fail. If the feed rate to the outer surface 12 is too small, a bright surface cannot be formed, requiring adjustment of the feed rate and secondary processing, which greatly reduces the processing efficiency of the wheel 1. If the distance between the outer surface 12 and the machining reference surface is greater than the design size of the wheel 1, in addition to adjusting the preset feed rate, which reduces the processing efficiency, it is also easy for the feed rate to the outer surface 12 to be too large during the finishing process, resulting in deformation of the outer surface 12. This leads to a reduction in the processing quality of the wheel 1 or even makes the wheel 1 a defective product, greatly increasing the defect rate.

[0051] To address the problems existing in the aforementioned related technologies, this embodiment provides a wheel processing method and equipment.

[0052] It should be noted that, as Figure 2 and Figure 3As shown, the wheel 1 referred to in this embodiment of the invention comprises a hub with a central hole 17, a rim 14 coaxially fitted with the hub, spokes 15 located between the rim 14 and the hub, and inner rim 11 and outer rim 13 located on both sides of the rim 14 along the axial direction. The axial direction of the wheel 1 is the X-axis direction. The end faces of the outer rim 13, spokes 15, and hub, which are axially away from the inner rim 11, together form the outer surface 12. The end face of the hub facing the inner rim 11 along the axial direction is the mounting surface 16 for flange connection. Mounting holes 18 are circumferentially spaced around the central hole on the hub. The mounting holes 18 include machined bolt holes and valve holes. The wheel 1 is made of aluminum alloy, and its blank is obtained through a casting process. Figure 3 As shown, the dashed line is the outline of the blank of wheel 1. During blank casting, in order to facilitate the removal of the blank, a wheel lip is generally formed on the edge of the axial end face of the blank. The wheel lip is divided into an inner wheel lip located at the inner rim 11 and an outer wheel lip 2 located at the outer rim 13. The wheel lip is removed during the rough machining of the blank. The single-sided design allowance refers to the preset feed amount to facilitate the machining of the blank of wheel 1 into a wheel 1 of the designed size. The value of the single-sided design allowance of each part on wheel 1 is usually 1 to 2% of the design size value of the corresponding part. In other words, the size value of each part of the blank of wheel 1 is the design size value of each part of wheel 1 plus the preset single-sided design allowance of each part.

[0053] like Figure 1 As shown, an embodiment of the present invention provides a wheel processing method, comprising:

[0054] S1. Using the outer lip 2 of the blank of wheel 1 as the machining reference, the inner rim 11 located at one end of wheel 1 along the axial direction is machined. This step can be called the forming process of the inner rim 11.

[0055] Specifically, using the outer wheel lip 2 as the machining reference means using the end face of the outer wheel lip 2 that is axially away from the inner wheel lip as the machining reference surface, such as... Figure 4 As shown, the dotted line represents the movement trajectory of the machining tool 3. Taking the outer wheel lip 2 as the machining reference, the machining tool 3 processes the inner wheel rim 11, mounting surface 16, center hole 17, inner wall surface of rim 14 facing the center hole 17, inner end face of spoke 15 facing the inner wheel rim 11, and the portion of outer wall surface of rim 14 away from the center hole and close to the inner wheel rim 11, located at one end of the wheel 1 along its movement trajectory. The outer wheel lip 2 can be installed by automated machining equipment such as CNC machine tools to complete the machining reference positioning, and then the above-mentioned components, including the inner wheel rim 11, can be processed. The machining method can be turning or milling, or a combination of at least two machining methods.

[0056] S2. Using the inner rim 11 as the machining reference and the preset first total length of the wheel 1 along the axial direction as the target, machine the outer surface 12 located at the other end of the wheel 1 along the axial direction. This step can be called the forming process of the outer surface 12.

[0057] Specifically, the preset first total length is the axial dimension design value of the wheel 1 after the outer surface 12 is formed. Using the preset first total length along the axial direction of the wheel 1 as the target, the outer surface 12 located at the other end along the axial direction of the wheel 1 is machined. This means that when the machining tool 3 is machining the outer surface 12, the dimension between the machined end face and the machining reference surface, i.e., the end face of the inner wheel rim 1 facing away from the machining tool 3, needs to be the preset first total length. This achieves the first fixed-length machining of the wheel 1, resulting in an intermediate product suitable for bright surface finishing. Figure 5 As shown, the end face of the inner wheel rim 11 that is axially away from the outer wheel lip 22 is used as the machining reference surface. Based on this, the center hole 17 machined during the forming process of the inner wheel rim 11 can also be added as the machining reference to achieve the reference positioning of the rotation axis. This is done by rotating the blank of the driving wheel 1 in conjunction with the machining tool 3 to cut the blank and form the outer surface 12. Figure 6 As shown, during the forming process of the outer surface 12, the outer wall surface of the rim 14 away from the center hole, near the outer rim 13, the outer rim 13, the outer end face of the spokes 15 away from the inner rim 11, and the outer end face of the hub away from the inner rim 11 are respectively machined. The outer end face of the outer rim 13 away from the inner rim 11, the outer end face of the spokes 15 away from the inner rim 11, and the outer end face of the hub away from the inner rim 11 cooperate to form the outer surface 12. During the forming process of the outer surface 12, the machining tool 3 can be connected at the break point of the outer wall surface machining of the rim 14 in step S1 above to ensure the continuity of the subsequent forming process of the outer surface 12. After the forming process of the outer surface 12 is completed, the wheel 1 can be sprayed after cleaning and deburring, and then the bright surface processing of the outer surface 12 can continue.

[0058] S3. Using the inner rim 11 as the machining reference and the preset second total length of the wheel 1 along the axial direction as the target, the outer surface 12 is machined to form a bright surface. This step can be called the bright surface machining of the outer surface 12.

[0059] Specifically, the second total length is preset to be the axial design dimension of the finished wheel 1. Using the preset second total length of the wheel 1 along the axial direction as the target, the outer surface 12 is machined to form a bright surface. This means that when the machining tool 3 performs the bright surface machining, the dimension between the machined end face and the machining reference surface, i.e., the end face of the inner wheel rim 1 facing away from the machining tool 3, must be the preset second total length. This achieves the second fixed-length machining of the wheel 1, resulting in a wheel 1 with a bright surface that conforms to the axial design dimension. Figure 7 As shown, the end face of the inner wheel rim 11 that is axially away from the outer wheel lip 22 is used as the machining reference surface. On this basis, the center hole 17 processed during the forming process of the inner wheel rim 11 can also be added as the machining reference to realize the reference positioning of the rotation axis. The wheel 1 is driven to rotate and cooperates with the machining tool 3 to cut the surface 12 after the coating is completed, forming a bright area on the surface 12.

[0060] In this embodiment, as Figure 1 As shown, firstly, the outer wheel lip 2 formed during the blank preparation process of wheel 1 is used as the machining reference. Since the plane where the end face of the outer wheel lip 2 is axially away from the inner wheel lip is perpendicular to the axis of wheel 1 and is nearly consistent with the plane where the outer surface 12 of wheel 1 is machined, it is beneficial to achieve precise machining of the inner wheel rim 11 when machining the inner wheel rim 11 using the outer wheel lip 2 as the machining reference, ensuring the positional accuracy of the inner wheel rim 11 relative to the outer surface 12. Next, using the machined inner wheel rim 11 as the machining reference, the outer surface 12 is machined with the preset first total length of wheel 1 along the axis as the target. The plane where the end face of the inner wheel rim 11 is axially away from the outer wheel lip 22 is parallel to the plane where the outer surface 12 of wheel 1 is machined. Therefore, machining the outer surface 12 using the inner wheel rim 11 as the machining reference is beneficial to controlling the machining dimensional tolerances between the outer surface 12 and the inner wheel rim 11, reducing machining errors, and as... Figure 3 As shown, the outer surface 12 and the inner rim 11 are located at the two ends of the wheel 1 along the axial direction. Steps S1 and S2 use these two ends as machining references to form the wheel 1. This ensures that the axial dimension of the wheel 1 after machining conforms to the preset first total length, achieving the first fixed total length machining of the wheel 1. This facilitates the overall machining tolerance control of the axial dimension of the wheel 1, avoids large cumulative tolerances, ensures the consistency of the axial dimension of multiple wheels 1 with continuously machined outer surfaces 12, reduces the fluctuation range of the axial machining dimension of the wheel 1, and helps ensure the machining quality of the wheel 1 after subsequent bright surface machining. Finally, the machined inner rim 11 is used again as a machining reference. Using the pre-set second total length along the axial direction of wheel 1 as the target, the outer surface 12 is brightened. Since the first fixed total length machining of wheel 1 can make the distance between the outer surface 12 and the machining reference surface within the pre-set fluctuation range of the axial design dimension of wheel 1, it is generally not necessary to adjust the pre-set feed amount of brightening machining to achieve effective brightening machining. This can effectively improve the machining efficiency of wheel 1, and ensure that the axial dimension value of wheel 1 conforms to the pre-set second total length after machining, thus realizing the second fixed total length machining of wheel 1. While not affecting the overall shape of the outer surface 12, the formation of bright surface is guaranteed, effectively improving the machining quality of wheel 1.

[0061] It should be noted that, as Figure 10 As shown, after the outer surface 12 is machined, the inner rim 11 and the center hole 17 can be used as machining references to machine the mounting hole 18 of the wheel 1.

[0062] like Figure 1 and Figure 8 As shown, optionally, taking the inner rim 11 as the machining reference and a preset first total length of the wheel 1 along the axial direction as the target, machining the outer surface 12 located at the other end of the wheel 1 along the axial direction includes:

[0063] S201. Using the inner rim 11 as a reference, determine the machining endpoint according to the preset first total length.

[0064] Specifically, before processing, the position of the inner rim 11 is used as a reference. The distance between the inner rim 11 and the processing tool 3 along the axial direction of the wheel 1 is obtained by moving the processing tool 3 along the axial direction. This position is the end point of the processing tool 3 when processing the outer surface 12, thereby ensuring that the distance between the inner rim 11 and the processed outer surface 12 is the preset first total length, and realizing the first fixed total length processing of the wheel 1.

[0065] S202. Based on the machining endpoint and the preset first machining tolerance, machine the outer surface 12 using the inner rim 11 as the machining reference.

[0066] Specifically, based on the machining endpoint and the axial dimensions of the wheel 1 blank, the dimensions of the blank that need to be removed to machine the outer surface 12 can be obtained, which is the first feed amount of the machining tool 3 to machine the outer surface 12. The first feed amount can be obtained by subtracting a preset first total length from the distance between the end face to be machined on the wheel 1 blank and the machining reference surface on the inner rim 11. This can be achieved by tool setting of the machining tool 3, allowing the machining tool 3 to machine according to the first feed amount. Alternatively, the first feed amount can be obtained by first calculating the difference between the preset first total length and the preset second total length to obtain the second feed amount required to form the bright surface, and then by calculating the difference between the single-sided design allowance of the outer surface 12 and the second feed amount. The single-sided design allowance of the outer surface 12 is a preset value obtained based on the design dimensions of the outer surface 12, which refers to the amount of material removed from the outer surface 12 of the wheel 1 blank. The total feed required to process the surface to be processed into the appearance surface 12 with a bright surface area is the sum of the feed required to process the wheel 1 to form the appearance surface 12 and the bright surface. Therefore, based on the single-sided design allowance of the appearance surface 12, the second feed required for the bright surface processing is removed to obtain the first feed required for the forming process of the appearance surface 12. Of course, in order to ensure processing stability, when setting the first feed, the tolerance range that needs to be controlled when processing the wheel 1 can also be considered, that is, the first processing tolerance is preset. When processing the wheel 1 for the first time with a fixed total length, the processing error needs to be controlled within the preset first processing tolerance range.

[0067] For example, the axial dimension of the blank of the wheel 1 after machining the inner rim 11 is 220.31 mm, the single-sided design allowance of the outer surface 12 is 1.5 mm, the preset first total length is 219.41 mm, the preset second total length, i.e. the axial design dimension of the finished wheel 1, is 218.81 mm, the second feed rate for bright surface machining is 0.6 mm, and the tolerance range for machining the outer surface 12 is controlled within 0.2 mm, i.e. the preset first machining tolerance is ±0.1 mm. At this time, the first feed rate is 0.9 mm, and the axial dimension of the wheel 1 after machining the outer surface 12 is 219.41 ±0.1 mm.

[0068] It should be noted that a third feed rate is also provided. The third feed rate is the cutting feed rate when the inner rim 11 is formed. Since the inner rim 11 is formed in one operation, the third feed rate is the single-sided design allowance of the inner rim 11.

[0069] The machining method for forming the outer surface 12 is cutting machining. The first feed rate is the total cutting feed required by the machining tool 3 to machine the outer surface 12. The machining tool 3 performs cutting machining on the blank of the wheel 1 through the first feed rate.

[0070] In this optional embodiment, such as Figure 8As shown, in order to achieve the first fixed-length machining of wheel 1, the movement of machining tool 3 can be used to determine the position of the preset first total length along the axial distance of wheel 1 from the inner rim 11 as the reference, which is the final position for machining the outer surface 12. Thus, the machining endpoint can be used as the reference for the infeed endpoint. On the basis of controlling the machining error within the preset first machining tolerance, the outer surface 12 can be machined. This not only produces the outer surface 12, but also ensures that the wheel 1 size meets the design requirements through the fixed-length machining method, which facilitates the subsequent formation of a bright surface on the outer surface 12, thus ensuring the machining quality and efficiency of wheel 1.

[0071] like Figure 1 and Figure 9 As shown, optionally, taking the inner rim 11 as the machining reference and a predetermined second total length of the wheel 1 along the axial direction as the target, the outer surface 12 is machined to form a bright surface on the outer surface 12, including:

[0072] S301. The second feed rate is obtained based on the difference between the preset first total length and the preset second total length.

[0073] Specifically, since the axial dimension of the wheel 1 after the first fixed total length machining meets the requirements of the preset first total length based on the preset first machining tolerance, the second feed amount required to form a bright surface on the appearance surface 12 can be obtained by the difference between the preset first total length and the preset second total length.

[0074] S302. Divide the second infeed amount to obtain the basic bright surface infeed amount and the rework allowance infeed amount.

[0075] Specifically, after the glossy area is formed on the outer surface 12, the wheel 1 needs to be painted. A clear coat or glitter is sprayed onto the wheel 1. These coatings will cover the finished glossy surface, potentially causing powder pockets, discoloration, or dust particles, affecting the product quality of the wheel 1 and even causing it to be defective. If painting defects occur, rework is required to re-form the glossy area. Therefore, in addition to the first glossy processing of the outer surface 12, at least one rework opportunity must be reserved. That is, the second feed rate for glossy processing can be used for at least two processes forming the glossy area on the outer surface 12. In this case, the second feed rate for glossy processing... The feed rate is divided into a basic bright finish feed rate and a rework allowance feed rate. The basic bright finish feed rate is the cutting feed rate required to form a bright finish area on the surface 12 in one machining operation. The rework allowance feed rate is the cutting feed rate required to perform a bright finish machining on the surface 12 again when there are painting defects on the bright finish area. Of course, in order to facilitate the division of the preset feed rate for bright finish machining and to avoid the value obtained by the division being too small, the number of rework operations reserved for bright finish machining of the surface 12 is at most three. Therefore, the second feed rate for bright finish machining is equal to the sum of the rework allowance feed rate multiplied by the preset number of rework operations and the basic bright finish feed rate.

[0076] For example, the preset number of reworks for bright surface processing is one. The rework allowance and the basic bright surface allowance can be equal. For example, the preset allowance for bright surface processing is 0.6mm, and the rework allowance and the basic bright surface allowance are both 0.3mm.

[0077] S303. Using the inner rim 11 as the machining reference, a bright surface is initially machined on the outer surface 12 according to the basic bright surface feed amount.

[0078] S304. Perform a spray painting operation on wheel 1. If the glossy finish is abnormal after spraying, rework the appearance surface 12 according to the rework allowance to form a glossy finish again.

[0079] In this optional embodiment, the second feed amount for bright surface processing is divided according to the preset number of rework operations for bright surface processing. The second feed amount can be divided into the basic bright surface feed amount and at least one rework reserve feed amount. Thus, while ensuring that the second feed amount for bright surface processing meets the dimensional requirements, the quality of bright surface processing of wheel 1 is guaranteed, thereby ensuring the product quality and product qualification rate of wheel 1.

[0080] Optionally, the basic bright surface infeed is greater than the range of a preset first machining tolerance; taking the inner rim 11 as the machining reference, the outer surface 12 is machined according to the basic bright surface infeed, forming a bright surface on the outer surface 12, including:

[0081] Using the inner rim 11 as a reference, the machining zero point is determined according to the preset first total length.

[0082] Specifically, when forming a bright surface on the outer surface 12, since the theoretical value of the axial dimension of the wheel 1 forming the outer surface 12 after the first fixed total length machining is the preset first total length, the inner wheel rim 11 can be used as a reference, and the position of the dimension of the end face of the inner wheel rim 11 being the preset first total length can be determined by moving the machining tool 3, etc., as the machining zero point. The machining zero point is the initial position of the machining tool 3 when it enters the machine.

[0083] Based on the basic bright surface feed rate, the outer surface 12 is machined with the machining zero point as the feed reference to form a bright surface on the outer surface 12.

[0084] In this optional embodiment, due to the setting of the machining zero point and the fact that the basic bright surface feed amount is greater than the range value of the first machining tolerance, when the machining is performed with the preset basic bright surface feed amount, the axial dimension fluctuation caused by the first fixed total length machining of the wheel 1 can be covered by the basic bright surface feed amount, so that the machining tool 3 can machine to the appearance surface 12, ensuring the formation of the bright surface on the appearance surface 12, thereby ensuring the machining quality of the wheel 1.

[0085] For example, the axial dimension of the blank of the wheel 1 after machining the inner rim 11 is 220.31 mm, the single-sided design allowance is 1.5 mm, the preset feed rate for bright surface machining is 0.6 mm, and the axial dimension tolerance of the outer surface 12 is controlled to be ±0.1 mm. Then the first feed rate is 0.9 ±0.1 mm, and the axial dimension of the wheel 1 after machining the outer surface 12 is 219.41 ±0.1 mm. In order to cover the tolerance range of the axial dimension of the wheel 1 after machining the outer surface 12, the feed rate for bright surface machining can be set to 0.3 mm.

[0086] Optionally, the second infeed amount is divided to obtain the basic bright surface infeed amount and the rework allowance infeed amount, including:

[0087] Based on the preset range of the first machining tolerance, the minimum feed rate of the basic bright surface is obtained.

[0088] Specifically, since the basic bright surface infeed amount needs to cover the axial dimension fluctuation caused by the first fixed overall length machining of wheel 1, the basic bright surface infeed amount needs to be greater than the range value of the preset first machining tolerance. Therefore, based on the range value of the preset first machining tolerance, the minimum value of the basic bright surface infeed amount can be determined.

[0089] The axial design dimension range of wheel 1 is obtained by summing the preset second total length and the preset second machining tolerance.

[0090] Specifically, the preset second machining tolerance is the allowable fluctuation range of the axial design dimension of the finished wheel 1 to meet the design requirements, and the preset second total length is the axle design dimension of the finished wheel 1. Therefore, the preset second total length and the preset second machining tolerance can be added together to obtain the axial design dimension range of the wheel 1.

[0091] The range of the second feed rate is obtained based on the difference between the preset first total length and the axial design dimension range of wheel 1.

[0092] Specifically, since the axial design dimension of wheel 1 is a range value, in other words, the target length when forming a bright surface on the outer surface 12, i.e. the preset second total length, is a range value. The preset first total length can be a definite value due to the first fixed total length machining during the forming process of the outer surface 12. The difference between the preset first total length and the preset second total length is the second feed amount. Therefore, the range of the second feed amount can be obtained by subtracting the preset first total length from the axial design dimension range of wheel 1.

[0093] Based on the minimum value of the basic bright surface infeed, the preset number of rework cycles, and the range of the second infeed, the basic bright surface infeed and the rework allowance infeed are obtained.

[0094] In this optional embodiment, the minimum value of the basic feed amount is determined by using the range of the preset first machining tolerance. Then, the axial design dimension range of the wheel 1 is determined by using the sum of the preset second total length and the preset second machining tolerance. Finally, the range of the second feed amount can be determined by using the difference between the axial design dimension range of the wheel 1 and the preset first total length. Thus, when dividing the second feed amount into the basic bright surface feed amount and the rework allowance feed amount, since the division is performed within the range of the second feed amount, it can ensure that the axial dimension of the wheel 1 meets the design requirements after bright surface machining based on the basic bright surface feed amount, while also ensuring that the axial dimension of the wheel 1 meets the design requirements after rework machining based on the rework allowance feed amount, thereby effectively ensuring the machining quality of the wheel 1.

[0095] For example, the design value of the axial dimension of wheel 1 is 218.81mm, the standard tolerance of the outer rim 13 is ±0.5mm, and a tolerance of ±0.1mm is retained, resulting in a second preset range of -0.4 to 0.4mm. Therefore, the axial dimension of wheel 1 after bright surface finishing is 218.81 ± 0.4mm. At this point, under the condition of meeting design requirements and tolerance control needs, the difference between the axial dimension of wheel 1 after rough machining and the axial dimension of wheel 1 after finish machining is the difference between 219.41 ± 0.1mm and 218.81 ± 0.4mm. Based on the preset 0.6mm, the preset feed rate range for bright surface finishing that meets the tolerance requirements is 0.6 to 1.1mm, i.e., there is a 0.4mm tolerance. At this point, the number of rework cycles for bright surface finishing can be set to one, or... The number of rework operations for the bright finish is set to two. Based on this, since the axial dimension of wheel 1 after machining the outer surface 12 is 219.41±0.1mm, in order to cover the tolerance range of the axial dimension of wheel 1 after machining the outer surface 12, the bright finish feed rate can be set to 0.3mm, and the rework allowance feed rate is also set to 0.3mm. The number of rework operations for the bright finish is set to two. After one bright finish operation, the axial dimension of wheel 1 is 219.11±0.1mm, which is within the tolerance range of 218.81±0.4mm, ensuring the formation of a bright finish. At the same time, after two rework operations, the axial dimension values ​​of wheel 1 are 218.81±0.1mm and 218.51±0.1mm, respectively, both within the tolerance range of 218.81±0.4mm, ensuring the product quality and pass rate of wheel 1.

[0096] Optionally, after machining the outer surface 12 and before forming a bright surface on the outer surface 12, the wheel machining method further includes:

[0097] Obtain a first measurement value of the axial dimension of wheel 1, and calculate whether the difference between the first measurement value and the preset first total length is within a first preset range.

[0098] Specifically, the axial design dimension and the first measured value of wheel 1 both refer to the axial dimension of wheel 1, which is the distance between the end face of the inner rim 11 of wheel 1 facing away from the outer surface 12 and the outer surface 12. The difference is that the axial design dimension refers to the axial dimension of wheel 1 after bright surface processing, which is the preset second total length, while the first measured value refers to the actual measured value of wheel 1 after bright surface processing. The first measured value of the axial dimension of wheel 1 can be obtained through tool setting inspection or inspection tools, etc., since the outer surface 12 is formed by the outer rim 13. The outer surfaces of components such as spokes 15 and hub are formed. Therefore, the first measured value of the axial dimension of wheel 1 can be the distance between the outer surface of the inner rim 11 and the outer surface of the outer rim 13, the outer surface of the spokes 15, or the outer surface of the hub along the axial direction. Accordingly, the first preset range can be determined according to the machining tolerance of each component forming the outer surface 12, or according to the dimensional tolerance of the overall axial machining of wheel 1. The first preset range can be determined according to the preset first machining tolerance of the forming machining of the outer surface 12 of wheel 1. For example, the first preset range is greater than -0.1 mm and less than 0.1 mm.

[0099] In this optional embodiment, after machining the outer surface 12 on the wheel 1, a first measurement value of the axial dimension of the wheel 1 at this time can be obtained first. Then, the difference between the first measurement and the axial design dimension of the wheel 1 can be calculated to see if it is within a first preset range. The first preset range is the preset first machining tolerance. This determines whether the axial dimension of the wheel 1 is controlled within the preset first machining tolerance range during the machining process. If the difference is within the first preset range, it means that the subsequent bright surface machining can proceed normally. If it exceeds the first preset range, it means that the outer surface 12 has not been machined properly and rework is required. This can be determined by the first measurement. The cutting feed amount for rework is determined by measuring the difference between the axial design dimension of wheel 1 and the value exceeding the first preset range, thus completing the secondary processing of the outer surface 12. This eliminates the need to wait until the bright surface processing to make adjustments, ensuring the dimensional accuracy of wheel 1 during bright surface processing. This effectively avoids the need for parameter adjustments during bright surface processing and the occurrence of deformation of the outer surface 12 during bright surface processing. At the same time, the processing parameters for rough machining of the blank to form the outer surface 12 can be adjusted to ensure the processing accuracy and continuity of subsequent batches of wheels 1, thereby effectively ensuring the processing efficiency and quality of wheel 1.

[0100] Optionally, when machining the outer surface 12, the inner rim 11 is used as the machining reference to machine the outer rim 13 located at the other end of the wheel 1 along the axial direction; obtaining the first measurement value of the axial dimension of the wheel 1 includes: obtaining the first measurement value of the axial dimension of the wheel 1 based on the distance between the inner rim 11 and the outer rim 13 along the axial direction of the wheel 1.

[0101] Specifically, since the outer surface 12 is formed by the outer rim 13, the spokes 15 and the outer surface of the hub, and the axial dimension between the outer rim 13 and the inner rim 11 is the largest, and the outer rim 13 is most affected by deformation during the subsequent bright surface processing of the outer surface 12, the first measurement value of the axial dimension of the wheel 1 is the distance between the inner rim 11 and the outer rim 13. Based on this, the axial design dimension value of the wheel 1, which is the difference between the first measurement value and the first measurement value, is the design distance value between the inner rim 11 and the outer rim 13. The difference between the first measurement value and the axial design dimension value of the wheel 1 is the fluctuation range value of the axial dimension of the wheel 1 after the outer surface 12 is processed.

[0102] In this optional embodiment, since the axial dimension between the outer rim 13 and the inner rim 11 is the largest, and the outer rim 13 is most affected by deformation during the subsequent bright finish processing of the outer surface 12, excessive processing of the outer rim 13 during the subsequent bright finish processing can cause deformation, adversely affecting the product quality or pass rate of the wheel 1. Alternatively, the outer rim 13 may not be processed in one go and requires rework for bright finish processing, affecting the processing efficiency of the wheel 1. Therefore, setting the first measured value of the axial dimension of the wheel 1 as the distance between the inner rim 11 and the outer rim 13, and determining whether the processing dimension of the outer surface meets the requirements by checking whether the difference between this first measured value and the design dimension value is within a first preset range, can better ensure the processing quality and efficiency of the wheel 1 during the subsequent bright finish processing.

[0103] Optionally, after forming a bright surface on the outer surface 12, the wheel processing method further includes:

[0104] Based on the distance between the outer rim 13 and the inner rim 11 along the axial direction of the wheel 1, a second measurement value of the axial dimension of the wheel 1 is obtained, and the difference between the second measurement value and the preset second total length is calculated to see if it is within a second preset range.

[0105] Specifically, the second preset range can be determined based on the standard tolerance of the outer rim 13, i.e., the preset second machining tolerance. For example, the preset second machining tolerance is ±0.5mm, and a tolerance of ±0.1mm is retained, resulting in a second preset range of -0.4 to 0.4mm.

[0106] In this optional embodiment, since the axial dimension between the outer rim 13 and the inner rim 11 is the largest, and the outer rim 13 is most affected by deformation during the bright surface processing of the outer surface 12, the outer rim 13 is processed too much during the bright surface processing, resulting in deformation, which has an adverse effect on the product quality or pass rate of the wheel 1. Therefore, the second measurement value of the axial dimension of wheel 1 after the bright surface is formed on the outer surface 12 is obtained. The second measurement value is set as the distance between the inner rim 11 and the outer rim 13. The difference between the second measurement value and the design dimension value is used to determine whether the bright surface processing meets the processing requirements. If the difference is within the second preset range, it means that the same model of wheel 1 cannot meet the design requirements for bright surface processing according to the current processing parameters. At this time, the processing parameters need to be adjusted until the difference between the second measurement value and the design dimension value is within the second preset range. If the difference is within the second preset range, it means that the same model of wheel 1 can meet the design requirements for bright surface processing according to the current processing parameters. In this way, when the bright surface processing of wheels 1 of the same model in a batch can be completed, the same model of wheels 1 can be mass-produced in an automated industrial manner according to the processing parameter data of that batch. While ensuring the processing quality of wheels 1, the processing efficiency of wheels 1 can be effectively improved.

[0107] Optionally, after processing the outer surface 12 and before forming a bright surface on the outer surface 12, the wheel processing method further includes: spraying the wheel 1.

[0108] Specifically, after the outer surface 12 of the wheel 1 is processed, the wheel 1 is clamped onto the spraying equipment for spraying.

[0109] In this optional embodiment, the wheel 1 is divided into fully coated and glossy types according to its appearance. The manufacturing methods of fully coated and glossy wheels are quite similar. The processing of glossy wheels adds a glossy finishing process compared to that of fully coated wheels. That is, after the blank of wheel 1 is shaped by the processing of the outer surface 12, it can be sprayed to obtain a fully coated wheel. However, after the outer surface 12 of the sprayed wheel 1 is glossy, it can be glossy to obtain a glossy wheel. Therefore, in the overall processing of wheel 1, after the spraying operation of the wheel 1 with the processed outer surface 12 is completed, it can be directly manufactured as a fully coated wheel. Of course, it can also continue to perform glossy finishing and finally be manufactured as a glossy wheel. With this setting, fully coated wheels and glossy wheels of the same model can be processed simultaneously on the same production line, which can effectively simplify the production line while ensuring processing efficiency.

[0110] The present invention provides a wheel processing device, including a processing unit, which is used to process a wheel 1 according to the wheel processing method described above.

[0111] The advantages of the wheel processing equipment in this embodiment compared to the prior art are the same as those of the wheel processing method described above, and will not be repeated here.

[0112] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A method for processing wheels, characterized in that, include: Using the outer wheel lip (2) of the blank of the wheel (1) as the machining reference, the inner wheel rim (11) located at one end of the wheel (1) along the axial direction is machined. Using the inner rim (11) as the machining reference and a preset first total length of the wheel (1) along the axial direction as the target, machining the outer surface (12) located at the other end of the wheel (1) along the axial direction includes: using the inner rim (11) as the reference, determining the machining endpoint according to the preset first total length; and machining the outer surface (12) using the inner rim (11) as the machining reference according to the machining endpoint and a preset first machining tolerance. Using the inner rim (11) as the machining reference and the preset second total length of the wheel (1) along the axial direction as the target, the outer surface (12) is machined to form a bright surface, including: obtaining a second feed amount based on the difference between the preset first total length and the preset second total length; dividing the second feed amount to obtain a basic bright surface feed amount and a rework allowance feed amount, wherein the basic bright surface feed amount is greater than the range value of the preset first machining tolerance; using the inner rim (11) as the machining reference, based on... The basic bright surface feed amount for the initial processing of the bright surface on the outer surface (12) includes: taking the inner rim (11) as a reference, determining the processing zero point according to the preset first total length; processing the outer surface (12) according to the basic bright surface feed amount, taking the processing zero point as the feed reference, and forming a bright surface on the outer surface (12); performing a spraying operation on the wheel (1), and if the bright surface is abnormal after spraying, reworking the outer surface (12) according to the rework reserved feed amount to form the bright surface again.

2. The wheel processing method according to claim 1, characterized in that, The step of dividing the second feed amount to obtain the basic bright surface feed amount and the rework allowance feed amount includes: The minimum value of the basic bright surface feed amount is obtained based on the range of the preset first machining tolerance. The axial design dimension range of the wheel (1) is obtained based on the sum of the preset second total length and the preset second machining tolerance; The range of the second feed rate is obtained based on the difference between the preset first total length and the axial design dimension range of the wheel (1); The basic bright surface infeed amount and the rework allowance infeed amount are obtained based on the minimum value of the basic bright surface infeed amount, the preset number of rework cycles, and the range of the second infeed amount.

3. The wheel processing method according to claim 2, characterized in that, After machining the outer surface (12) and before forming a bright surface on the outer surface (12), the wheel machining method further includes: Obtain a first measurement value of the axial dimension of the wheel (1), and calculate whether the difference between the first measurement value and the preset first total length is within a first preset range.

4. The wheel processing method according to claim 3, characterized in that, When machining the outer surface (12), the inner rim (11) is used as the machining reference to machine the outer rim (13) located at the other end of the wheel (1) along the axial direction; the first measurement value of the axial dimension of the wheel (1) is obtained by: obtaining the first measurement value of the axial dimension of the wheel (1) based on the distance between the inner rim (11) and the outer rim (13) along the axial direction of the wheel (1).

5. The wheel processing method according to claim 4, characterized in that, After forming a bright surface on the outer surface (12), the wheel processing method further includes: Based on the distance between the outer rim (13) and the inner rim (11) along the axial direction of the wheel (1), a second measurement value of the axial dimension of the wheel (1) is obtained, and the difference between the second measurement value and the preset second total length is calculated to see if it is within a second preset range.

6. The wheel processing method according to any one of claims 1 to 5, characterized in that, After the outer surface (12) is processed, and before a bright surface is formed on the outer surface (12), the wheel processing method further includes: spraying the wheel (1).

7. A wheel processing equipment, characterized in that, It includes a processing unit for processing a wheel (1) according to the wheel processing method as described in any one of claims 1 to 6.

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