Processing and assembling method of coating rigid roller

Abstract

The invention relates to the technical field of rigid roller machining, and particularly discloses a machining and assembling method for a coating rigid roller. The method comprises the following steps that a rigid roller body is provided, and the rigid roller body comprises two shaft ends which are oppositely arranged in the axial direction of the rigid roller body; providing two bearings and two bearing seats, wherein the two bearing seats are respectively matched with the two bearings; the two bearings and the two bearing pedestals are installed at the two shaft ends in a matched mode correspondingly, and a primary rigid roller is obtained; the primary roundness of the primary rigid roller is obtained, and the primary roundness is compared with preset roundness; wherein the roundness represents the degree that the cross section of the rigid roller body is close to a theoretical circle; the primary steel roller is polished until the primary roundness is not larger than the preset roundness, and an accurate grinding steel roller is obtained; and the driving component is installed on one bearing seat of the fine grinding rigid roller, and the coating rigid roller is obtained. The method is used for controlling and compensating the whole transmission concentricity error after assembly is completed.

Description

Technical Field

[0001] This invention relates to the field of steel roller processing technology, and in particular to a method for processing and assembling a coating steel roller. Background Technology

[0002] In lithium-ion battery manufacturing, electrode coating is one of the key processes affecting battery performance and consistency. As a core component of the electrode coating process, the coating roller's surface precision directly determines the uniformity of the coating density, thus affecting the battery's energy density, cycle life, and safety. Currently, coating rollers are typically driven by servo motors, with torque transmitted through a reducer to rotate the roller. To ensure coating quality, the entire transmission system (including the roller shaft, bearings, bearing housings, and motor connection points) must possess extremely high concentricity.

[0003] In existing technologies, the assembly of coating rollers typically employs high-precision machining and multi-stage thermal fitting. Specifically, the roller shaft and bearing, as well as the bearing and bearing housing, are all interference fits. During assembly, the bearing must first be heated to a certain temperature to expand before being fitted onto the roller shaft; similarly, the bearing housing also needs to be heated before being assembled with the bearing. While this process ensures structural tightness and transmission stability to a certain extent, it still has significant technical limitations.

[0004] First, although individual components may achieve high dimensional accuracy during processing, microscopic errors will continue to accumulate during multiple assembly processes. Even if the individual machining errors of the roller, bearing, and bearing housing are extremely small, the overall concentricity of their assembly is difficult to control within an ideal range. This deviation will directly cause radial runout when the roller rotates, leading to fluctuations in coating thickness and severely affecting the consistency of areal density.

[0005] Secondly, the hot assembly process itself further exacerbates the difficulty of precision control. During heating and cooling, the metal material undergoes microscopic deformation due to thermal expansion and contraction. This non-uniform deformation amplifies the original assembly errors. Even with high-precision temperature control, it is still difficult to completely avoid uneven stress distribution on the mating surfaces caused by temperature gradients, which can lead to bearing misalignment or roller axis skew.

[0006] To address these issues, existing technologies generally rely on improving the machining accuracy of parts and optimizing assembly processes. For example, they employ auxiliary methods such as ultra-precision grinding, laser alignment, and liquid nitrogen-cooled assembly. However, these methods not only significantly increase manufacturing costs and extend production cycles, but also offer limited improvement in effectiveness. Especially under mass production conditions, the stability and repeatability of existing processes still struggle to meet increasingly stringent coating accuracy requirements. Summary of the Invention

[0007] The purpose of this invention is to provide a method for processing and assembling a coating roller to control and compensate for the overall transmission concentricity error after assembly.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] A method for processing and assembling a coating roller includes the following steps: providing a roller body, the roller body including two shaft ends arranged opposite each other along its axial direction; providing two bearings and two bearing seats, the two bearing seats respectively matching the two bearings; matching and installing the two bearings and the two bearing seats respectively on the two shaft ends to obtain a primary roller; obtaining the primary roundness of the primary roller and comparing the primary roundness with a preset roundness; wherein, the roundness characterizes the degree to which the cross-section of the roller body is close to a theoretical circle; grinding the primary roller until the primary roundness is not greater than the preset roundness to obtain a fine-ground roller; and installing a driving component on one of the bearing seats of the fine-ground roller to obtain the coating roller.

[0010] As an optional technical solution for the processing and assembly method of coating steel roller, the surface roughness Ra of the steel roller body is ≥3.0μm.

[0011] As an optional technical solution for the processing and assembly method of the coating roller, the roughness Ra of the precision-ground roller is ≤0.2μm, and the preset roundness is 1μm.

[0012] As an optional technical solution for the processing and assembly method of coating rollers, obtaining the primary roundness of the primary roller includes: fixing the primary roller on a grinding machine and measuring the primary roundness on the grinding machine.

[0013] As an optional technical solution for the processing and assembly method of coating rollers, obtaining the primary roundness of the primary roller includes: sequentially obtaining the primary roundness of the cross-section at each point along the axial direction of the primary roller, and comparing the primary roundness with the preset roundness.

[0014] As an optional technical solution for the processing and assembly method of coating steel roller, grinding the primary steel roller until the primary roundness is not greater than the preset roundness to obtain a fine-ground steel roller includes: coarsely grinding the roller surface of the primary steel roller to obtain a coarse-ground steel roller; and finely grinding the roller surface of the coarse-ground steel roller to obtain a fine-ground steel roller.

[0015] As an optional technical solution for the processing and assembly method of coating rigid roller, the rough grinding of the roller surface of the primary rigid roller includes: grinding the roller surface of the primary rigid roller with a grinding wheel, wherein the feed amount of the grinding wheel is 0.001mm, the lateral movement speed of the grinding wheel is 200-500mm / min, and the rough grinding time is 30-60min.

[0016] As an optional technical solution for the processing and assembly method of coating steel roller, the fine grinding of the roller surface of the coarse grinding steel roller includes: grinding the roller surface of the coarse grinding steel roller with a grinding wheel, wherein the feed amount of the grinding wheel is 0-0.0001mm, the lateral speed of the grinding wheel is 200-500mm / min, and the fine grinding time is 15-40min.

[0017] As an optional technical solution for the processing and assembly method of the coating roller, the step of matching and installing the two bearings and the two bearing seats on the two shaft ends respectively includes: heating the two bearings and respectively sleeve the heated two bearings on the two shaft ends; and heating the two bearing seats and respectively sleeve the heated two bearing seats on the two bearings.

[0018] As an optional technical solution for the processing and assembly method of the coating roller, the heating temperature of the two bearings is 100-150℃, and the heating temperature of the two bearing seats is 100-150℃.

[0019] The beneficial effects of this invention are:

[0020] The processing and assembly method of this coating roller defines the overall process flow. It first installs bearings and bearing housings to form a primary roller, then measures and grinds it to control roundness, and finally installs the drive component. This fundamentally eliminates the impact of cumulative errors from bearing press-fitting and bearing housing installation on the roller surface runout accuracy. This method achieves an integrated process of bearing and bearing housing installation and roller finishing, ensuring that the grinding process uses the actual working reference (i.e., the bearing housing) after assembly as a reference, achieving compensatory processing and significantly improving the surface density consistency of the coating roller, meeting the requirements of high-precision coating processes. Simultaneously, integrating the drive component installation in the final step avoids new errors introduced by the final assembly, ensuring overall transmission concentricity. Furthermore, this integrated processing reduces workpiece handling and repetitive clamping, simplifies processing steps, and improves processing efficiency and accuracy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the coupling transmission structure provided in an embodiment of the present invention;

[0022] Figure 2 This is a front view of the coupling transmission structure provided in an embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional view of the coupling transmission structure provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the diaphragm coupling provided in an embodiment of the present invention;

[0025] Figure 5 This is a front view of the diaphragm coupling provided in an embodiment of the present invention;

[0026] Figure 6 This is a cross-sectional view of the diaphragm coupling provided in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the polishing assembly provided in an embodiment of the present invention;

[0028] Figure 8 This is a flowchart of the processing and assembly method of the coating roller provided in the embodiment of the present invention.

[0029] In the picture:

[0030] 100. Coating roller; 110. Roller body; 111. Roller shaft; 112. Roller body; 120. Bearing housing; 130. Bearing; 140. Bearing baffle;

[0031] 200. Drive component; 210. Diaphragm coupling; 211. Mounting recess; 220. Reducer; 230. Servo motor;

[0032] 300. Grinding assembly; 310. Grinding head; 320. Positioning fixture; 321. Fixed clamping component; 322. Moving clamping component; 323. Fixture base; 330. Mechanism base; 340. Rotary drive unit. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] like Figures 1 to 8 As shown, the present invention provides a method for processing and assembling a coating roller, comprising the following steps: providing a roller body 110, the roller body 110 including two shaft ends arranged opposite to each other along its axial direction; providing two bearings 130 and two bearing seats 120, the two bearing seats 120 respectively matching the two bearings 130; matching and installing the two bearings 130 and the two bearing seats 120 respectively on the two shaft ends to obtain a primary roller; obtaining the primary roundness of the primary roller and comparing the primary roundness with a preset roundness; wherein, roundness characterizes the degree to which the cross-section of the roller body 110 is close to the theoretical circle; grinding the primary roller until the primary roundness is not greater than the preset roundness to obtain a fine-ground roller; installing a drive component 200 on one of the bearing seats 120 of the fine-ground roller to obtain a coating roller 100.

[0038] Specifically, the rigid roller body 110 includes a roller body 112 and a roller shaft 111 that passes through the roller body 112. The roller shaft 111 is coaxially arranged with the roller body 112, and the end of the roller shaft 111 is equivalent to the shaft end mentioned above.

[0039] The processing and assembly method of this coating roller defines the overall process of processing and assembling the coating roller 100. By first installing the bearing and bearing housing 120 to form a primary roller, then measuring and grinding to control roundness, and finally installing the drive component, the cumulative errors generated during the pressing of the bearing 130 and the installation of the bearing housing 120 are fundamentally eliminated from the impact on the surface runout accuracy of the roller body 112. This method achieves an integrated process of installing the bearing 130 and bearing housing 120 and finishing the roller body 112, ensuring that the grinding process uses the actual working reference after assembly (i.e., bearing housing 120) as a reference, achieving compensatory processing, thereby significantly improving the surface density consistency of the coating roller 100 and meeting the requirements of high-precision coating processes. Simultaneously, integrating the drive component installation in the final step avoids new errors introduced by the final assembly, ensuring overall transmission concentricity. Furthermore, this integrated processing reduces workpiece handling and repetitive clamping, simplifies processing steps, and improves processing efficiency and accuracy.

[0040] In this embodiment, two bearing housings 120 are provided. The inner ring of the bearing 130 is in contact with the outer peripheral side of the roller shaft 111, and the outer ring of the bearing 130 is in contact with the wall of the bearing hole on the bearing housing 120, so that each bearing housing 120 is rotatably connected to one end of the roller shaft 111 through the bearing 130. Specifically, each end of the roller shaft 111 is provided with three coaxially arranged bearings 130, the sides of two adjacent bearings 130 are in contact, and the side of the bearing 130 closest to the roller body 112 presses against the bearing baffle 140.

[0041] The detailed steps for heat-fitting bearings 130 and bearing housings 120 are as follows: First, two bearing baffles 140 are respectively fitted onto both ends of roller shaft 111; then, bearings 130 are heated to 100-150°C, causing the inner ring of bearings 130 to expand due to heat; bearings 130 are then vertically fitted onto predetermined positions on roller shaft 111 using the first assembly assembly; then, the above bearing 130 installation operation is repeated at both ends of roller shaft 111 until all bearings 130 are installed on roller shaft 111; then, bearing housings 120 are heated to 100-150°C, and after the bore wall of the bearing hole expands due to heat, bearing housings 120 are vertically fitted onto the outer ring of bearings 130 using the first assembly assembly until bearing housings 120 completely abut against the limiting step on the rigid roller body 110.

[0042] During the insertion of bearing 130, the inner ring of bearing 130 is concentric and perpendicular to roller 111 to avoid tilting and jamming; during the insertion of bearing housing 120, the bearing hole is aligned with the axis of roller 111, and bearing housing 120 is inserted smoothly to avoid tilting and jamming.

[0043] In this embodiment, the surface roughness Ra of the rigid roller body 110 is ≥3.0μm.

[0044] By limiting the initial surface roughness Ra of the roller body 110 to ≥ 3.0 μm, it is indicated that the roller body 112 is in an unfinished state before processing, leaving sufficient machining allowance for subsequent grinding. This ensures that the grinding process can effectively eliminate assembly errors and surface deviations, avoids insufficient machining allowance due to an overly smooth initial surface, guarantees the operability of the grinding process and the effectiveness of precision compensation, and ensures the reliability and process adaptability of the final roller surface quality.

[0045] For example, the roughness Ra of the precision-ground steel roller is ≤0.2μm, and the preset roundness is 1μm.

[0046] By setting the final surface roughness and roundness accuracy of the precision-ground roller, the surface quality required for high-precision coating of the coating roller 100 is ensured. Low roughness meets the demands of high-precision coating operations, while strict roundness control directly minimizes the circular runout error during roller rotation, ensuring the stability and uniformity of the coating roller 100 during high-speed coating operations. This guarantees the consistency of the coating surface density, meets the extreme requirements for roller surface precision in high-end applications such as lithium battery electrode coating, and improves coating quality.

[0047] In this embodiment, obtaining the primary roundness of the primary rigid roller includes: fixing the primary rigid roller to a grinding machine and measuring the primary roundness on the grinding machine.

[0048] By fixing the primary roller directly onto the grinding machine to measure roundness, the measurement and processing are integrated, reducing the number of workpiece clamping and handling operations and avoiding the introduction of secondary errors. Utilizing the high-precision platform of the grinding machine ensures the stability and repeatability of the measurement process, reduces errors introduced by equipment switching, improves the accuracy of measurement data and processing efficiency, and guarantees measurement efficiency and accuracy, providing a real-time and accurate data foundation for subsequent grinding.

[0049] Furthermore, obtaining the primary roundness of the primary rigid roll includes: sequentially obtaining the primary roundness of the cross-section of the primary rigid roll at various points along the axial direction, and comparing the primary roundness with a preset roundness.

[0050] The aforementioned limitations emphasize point-by-point measurement and comparison of the roundness of each cross-section along the axial direction of the roller body 112. This enables the identification of local errors, provides data support for targeted grinding, and achieves comprehensive monitoring of the overall shape of the roller body 112. This refined measurement method can identify local errors, making the grinding process more targeted, ensuring the uniformity of roundness along the entire length of the roller body 112, avoiding uneven coating problems caused by local deviations, and improving processing accuracy and product reliability.

[0051] In this embodiment, grinding the primary steel roller until the primary roundness is no greater than a preset roundness to obtain a fine-ground steel roller includes: coarsely grinding the roller surface of the primary steel roller to obtain a coarse-ground steel roller; and finely grinding the roller surface of the coarse-ground steel roller to obtain a fine-ground steel roller.

[0052] By dividing the grinding process into two stages, rough grinding and fine grinding, material is gradually removed through step-by-step processing. Rough grinding quickly removes most of the excess material, improving processing efficiency; fine grinding focuses on final precision restoration. This step-by-step processing reduces processing stress, improves surface quality stability, avoids surface damage caused by excessive grinding in a single step, and ensures final precision and surface quality.

[0053] Furthermore, the rough grinding of the primary steel roller surface includes: grinding the primary steel roller surface with a grinding wheel, the grinding wheel feed rate being 0.001 mm, the grinding wheel traverse speed being 200-500 mm / min, and the rough grinding time being 30-60 min.

[0054] By limiting the rough grinding parameters, the cutting amount and working speed were optimized, ensuring the uniformity and controllability of material removal. While ensuring removal efficiency, thermal deformation and stress were controlled, providing a uniform allowance for fine grinding, ensuring a balance between processing efficiency and precision, and guaranteeing the controllability and stability of the rough grinding process.

[0055] For example, the surface of the fine grinding steel roller includes: grinding the surface of the rough grinding steel roller with a grinding wheel, wherein the feed rate of the grinding wheel is 0-0.0001mm, the traverse speed of the grinding wheel is 200-500mm / min, and the fine grinding time is 15-40min.

[0056] By limiting the fine grinding parameters, micron-level material removal was achieved, effectively correcting circular runout errors and demonstrating the ultra-precision machining characteristics of the roller body 112 surface. Extremely small feed rates and precise traverse speeds ensured high surface finish and roundness, directly meeting the extreme precision requirements of the coating roller 100, reducing surface micro-defects, and improving coating performance.

[0057] In this embodiment, the process of matching and installing two bearings 130 and two bearing seats 120 on two shaft ends includes: heating the two bearings 130 and installing the heated bearings 130 on the two shaft ends respectively; and heating the two bearing seats 120 and installing the heated bearing seats 120 on the two bearings 130 respectively.

[0058] The bearing 130 and bearing housing 120 are installed using a heat-fitting method, which limits the heat-fitting steps of the bearing 130 and bearing housing 120. Utilizing the principle of thermal expansion, the parts fit together smoothly, eliminating the need for heavy pressing during assembly and avoiding deformation or damage that may occur with mechanical pressing. This method ensures the fitting accuracy between the bearing 130 and roller 111, and between the bearing housing 120 and bearing 130, improving assembly accuracy and reliability, reducing installation errors at the source, and providing an accurate benchmark for subsequent measurement and grinding.

[0059] Furthermore, the heating temperature for heating the two bearings 130 is 100-150℃, and the heating temperature for heating the two bearing seats 120 is 100-150℃.

[0060] By limiting the heating temperature to a reasonable range of 100-150℃, it is ensured that the bearing 130 and bearing housing 120 fully expand to facilitate assembly, while avoiding material performance degradation or lubricant failure. The standardized temperature setting simplifies heating control, improves process consistency and operability, and reduces thermal management costs and operational complexity.

[0061] In this embodiment, the heating temperature of the two bearings 130 is taken as 120°C, and the heating temperature of the two bearing seats 120 is taken as 120°C.

[0062] By setting the heating temperature of the two bearings 130 to be equal to the heating temperature of the two bearing housings 120, the control logic and structural complexity of the heating assembly are simplified. By simply setting and maintaining the heating assembly at an optimal temperature, the heat fitting requirements of both bearings 130 and bearing housings 120 can be met simultaneously. This reduces equipment manufacturing costs and operational difficulty, improves the efficiency and consistency of thermal management during processing, avoids the cumbersome process of separate temperature control due to temperature differences, and reduces uncertainties in assembly stress or fitting accuracy caused by temperature variations.

[0063] This embodiment also provides a coating roller processing device, applied to the above-mentioned coating roller processing and assembly method. The coating roller processing device is used to process the coating roller 100. The coating roller processing device includes a fixing component, a heating component, a first assembly component, a measuring component, and a grinding component 300. The fixing component selectively fixes the roller body 112 of the roller body 110. The heating component can heat the bearing 130 to 100-150°C and the bearing seat 120 to 100-150°C. The first assembly component can drive the bearing 130 to move along the axis of the roller shaft 111, so that the bearing 130 is sleeved on the roller shaft 111, and can drive the bearing seat 120 to move along the axis of the roller shaft 111, so that the bearing seat 120 is sleeved on the bearing 130. The measuring component is used to measure the circular runout data of the roller body 112. The grinding component 300 is used to grind the surface of the roller body 112.

[0064] This coating roller processing device, by setting up a fixing component, a heating component, a first assembly component, a measuring component, and a grinding component 300, defines the overall structure of the integrated processing device. It systematically and streamlinedly realizes an integrated processing flow for the heat installation of the bearings 130 and bearing seats 120 on the coating roller 100, the error measurement of the roller body 112, and the surface grinding of the roller body 112. After the key reference components such as the bearings 130 and bearing seats 120 are installed in place, the coating roller processing device uses them as references to perform precision machining on the surface of the roller body 112. This fundamentally eliminates the influence of cumulative errors generated during the pressing of the bearings 130 and the installation of the bearing seats 120 on the circular runout accuracy of the roller body 112 surface, thereby ensuring the consistency of the surface density of the coating roller 100 and meeting the process requirements for high-precision coating operations on the coating roller 100.

[0065] For example, the grinding assembly 300 includes a grinding head 310 and a positioning fixture 320, the positioning fixture 320 selectively fixing the bearing seat 120, and the grinding head 310 used to thin the surface of the roller body 112.

[0066] The grinding assembly 300, by setting up a grinding head 310 and a positioning fixture 320, can be directly fixed with the installed bearing housing 120 as a reference using the positioning fixture 320. This ensures that the reference for fine grinding is completely consistent with the rotation reference of the roller during actual operation (i.e., the bearing housing 120), effectively eliminating concentricity deviations caused by assembly and improving the control accuracy of the surface runout of the roller body 112. The grinding head 310 is used to perform precise material removal. The above structure ensures that the grinding process is a compensatory processing based on the actual error after assembly, which can directly and accurately eliminate the runout error of the roller body 112 surface with the bearing housing 120 as the reference system. The high processing accuracy ensures the surface accuracy of the roller body 112 after fine machining.

[0067] The positioning fixture 320 serves to fix the bearing seat 120 during the fine grinding of the roller body 112. Its specific structure and working principle are common knowledge in the field and are well known to those skilled in the art. They are not the focus of this embodiment and will not be elaborated here.

[0068] Specifically, the grinding assembly 300 and the measuring assembly are integrated into the grinding machine.

[0069] When finishing the surface of the roller 112, the two bearing seats 120 are first fixed with the positioning fixture 320, and then the circular runout data of the surface of the roller 112 is measured. Then, the surface of the roller 112 is finely ground according to the measured circular runout data. The feed rate of the grinding head 310 is determined according to the circular runout data; the feed rate varies depending on the error at different points on the surface of the roller 112. After the surface of the roller 112 is finished, the circular runout data of each point on the surface of the roller 112 is monitored again using the measuring component. In this embodiment, the circular runout data is limited to within 1µm as an example.

[0070] In this embodiment, the fine grinding method of the roller body 112 surface is common knowledge in the art and is well mastered by those skilled in the art. Its specific content is not the focus of this embodiment and will not be elaborated here.

[0071] Furthermore, the grinding assembly 300 also includes a mechanism base 330 and a rotary drive unit 340. The grinding head 310 and the positioning fixture 320 are both mounted on the mechanism base 330. The grinding head 310 can move in a direction parallel to the axis of the roller shaft 111, and the positioning fixture 320 can move in a direction perpendicular to the axis of the roller shaft 111. The rotary drive unit 340 is mounted on the positioning fixture 320 and is used to drive the rigid roller body 110 to rotate around the axis of the roller shaft 111.

[0072] By setting up a mechanism base 330, a rotary drive unit 340, a movable grinding head 310, and a positioning fixture 320, automated and integrated precision grinding operations on the surface of the roller body 112 are achieved, realizing the automation and intelligence of the surface finishing process of the roller body 112. Specifically, the mechanism base 330 provides a stable foundation; the rotary drive unit 340 drives the coating roller 100 to rotate to simulate actual working conditions; the grinding head 310 can move along the axis of the roller shaft 111 to achieve uniform grinding along the entire length; the positioning fixture 320 can move radially to achieve precise control of the grinding amount. This structure can efficiently and accurately complete contour grinding of complex error surfaces, ensuring that the amount of material removed from each point on the surface of the roller body 112 is optimized according to the measurement results, improving the uniformity and accuracy of grinding, reducing the number of workpiece clamping operations and intermediate handling, ensuring the control capability of the circular runout of the roller body 112 surface, and greatly improving processing accuracy and efficiency.

[0073] Furthermore, the grinding assembly 300 also includes a control unit, which is communicatively connected to the measuring assembly and the positioning fixture 320 respectively. The control unit is used to control the positioning fixture 320 to move closer to or further away from the grinding head 310 based on the circular runout data.

[0074] The control unit adjusts the relative position of the positioning fixture 320 and the grinding head 310 in real time based on the circular runout data fed back by the measuring component, realizing intelligent and adaptive closed-loop control machining. The control unit links the real-time circular runout data detected by the measuring component with the grinding action, and can dynamically and precisely control the feed amount of the grinding head 310 or the position of the positioning fixture 320 according to the specific error values ​​at various points on the surface of the roller 112, achieving precise contour grinding of the roller 112 surface shape. This integrated "measurement-feedback-compensation" process significantly improves grinding accuracy and efficiency, reduces manual intervention, enhances process automation and consistency, and ensures that the circular runout can be stably controlled within a predetermined range.

[0075] In one embodiment of this invention, the measuring components include a micrometer and a laser ranging mechanism.

[0076] In another embodiment of this invention, the measuring component includes only a micrometer. In yet another embodiment of this invention, the measuring component includes only a laser rangefinder.

[0077] The refined definition of the measurement components provides a high-precision and flexible measurement solution. Micrometer contact measurement is stable, reliable, and low-cost; the laser rangefinder is a non-contact measurement method that is fast, accurate, and does not scratch the workpiece surface. Both can be used individually or in combination, accurately capturing microscopic deviations on the roller 112 surface, providing reliable data support for finishing, and thus giving the device the flexibility to adapt to different production rhythms and precision budget requirements, ensuring the accuracy and reliability of circular runout data acquisition.

[0078] The method of measuring the surface roughness of the roller 112 using a micrometer and a laser rangefinder is a conventional technique in the field. Its working principle and operation are common knowledge in the field and are not the focus of this embodiment. Therefore, it will not be elaborated here.

[0079] In this embodiment, the positioning fixture 320 includes a fixed clamping member 321, a movable clamping member 322, and a fixture base 323. The fixed clamping member 321 is fixedly disposed on the fixture base 323, and the movable clamping member 322 is movably connected to the fixture base 323. The movable clamping member 322 can move closer to or further away from the fixed clamping member 321 to clamp or release the bearing seat 120.

[0080] The positioning fixture 320 adopts a structure in which a fixed clamping part 321 and a movable clamping part 322 cooperate, which can quickly and stably clamp the bearing seat 120, ensuring the stability of the workpiece reference during the processing, avoiding vibration or displacement of the coating roller 100 during the grinding process, preventing secondary errors caused by loose clamping, and ensuring the stability and repeatability of the grinding process.

[0081] For example, the first assembly component includes a vision positioning unit that can guide the axis of the bearing 130 to be aligned with the axis of the roller 111, and the vision positioning unit can guide the axis of the bearing hole to be aligned with the axis of the roller 111.

[0082] The addition of a vision positioning unit ensures that the bearing 130 and bearing housing 120 are aligned with the axis of the roller 111 during the heat assembly process. This solves the alignment problem during heat assembly, avoids additional errors caused by assembly misalignment, and guarantees the accuracy and reliability of the heat assembly process, providing a good foundation for subsequent precision machining. When fitting the bearing 130 and bearing housing 120 after heating, the vision positioning unit can guide in real time to ensure that the axes between the inner ring of bearing 130 and roller 111, and between bearing housing 120 and outer ring of bearing 130 are strictly aligned. This effectively avoids installation stress and parallelism errors introduced by human operational errors such as tilting and jamming, reducing errors such as eccentricity and stress concentration caused by tilted installation from the source. This lays a good foundation for subsequent accurate measurement and grinding, improving the reliability and yield of the entire process.

[0083] In this embodiment, the coating roller processing device further includes a roughness measuring component, which is used to detect the surface roughness of the roller 112 after grinding.

[0084] The addition of a surface roughness measurement component enables comprehensive online inspection of the surface finish of roller 112. This component not only monitors circular runout accuracy but also simultaneously monitors surface roughness. This ensures that the surface of the polished roller 112 meets both the extremely high requirements for circular runout and the process standards for surface finish, providing a complete quality verification process. This satisfies the surface quality requirements of the high-precision coating process for roller 112, improves processing efficiency and the integrity of quality control, and helps improve the coating uniformity and product quality of the coating roller 100, ensuring that the overall performance of the finished coating roller 100 meets the standards.

[0085] This embodiment also provides a coupling transmission structure assembly system, including a second assembly component and the above-mentioned coating roller processing device. The second assembly component can drive the drive component 200 to move along the axis of the roller shaft 111, so that the second assembly component is coaxially connected with the roller shaft 111.

[0086] This coupling drive assembly system also integrates the precision assembly of the aforementioned high-precision-machined coating roller 100 and drive component 200 into the system. The second assembly component ensures that the drive component 200 and the precision-machined roller shaft 111 are coaxially connected, avoiding the introduction of new radial or angular deviations in the final assembly stage. Combined with the aforementioned processing technology, this forms a complete chain precision assurance solution from the machining of the coating roller 100 to the integration of the coupling drive structure, ensuring the concentricity and stability of the overall transmission, and guaranteeing that the circular runout of the assembled roller body 112 surface still meets extremely demanding process requirements, thereby achieving excellent areal density consistency.

[0087] By combining the tolerance capability of the diaphragm coupling, the system ultimately ensures that the entire power transmission chain from the servo motor 230 to the surface of the roller 112 has extremely high coaxiality and rotational accuracy, so that the surface runout of the assembled roller 112 can fully meet the demanding coating process requirements.

[0088] In this embodiment, the drive component 200 includes a servo motor 230, a reducer 220, and a diaphragm coupling 210 connected in sequence. The roller shaft 111 is connected to the output end of the diaphragm coupling 210 via a stepped structure. A mounting recess 211 is fixedly provided at the input end of the diaphragm coupling 210, and the mounting recess 211 is connected to the output end of the reducer 220 via a stepped structure. The output end of the servo motor 230 is connected to the input end of the reducer 220 via a stepped structure. This stepped connection structure ensures concentricity at the connection point, thereby ensuring the overall concentricity of the drive component 200. The diaphragm coupling 210 allows for radial and angular deviations within a predetermined range during the installation of the coating roller 100 and the reducer 220.

[0089] Using the above-described coupling transmission structure assembly system, the following assembly steps of the coupling transmission structure can be completed: after the processing steps of the coating roller 100 are completed, the roller body 110 is assembled onto the drive member 200.

[0090] In this embodiment, the aforementioned coupling transmission structure is installed on the coating head upright plate.

[0091] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for processing and assembling a coating roller, characterized in that, Includes the following steps: A rigid roller body (110) is provided, the rigid roller body (110) including two shaft ends disposed opposite each other along its axial direction; Two bearings (130) and two bearing housings (120) are provided, each of the two bearing housings (120) being matched with one of the two bearings (130); The two bearings (130) and the two bearing seats (120) are respectively matched and installed on the two shaft ends to obtain the primary rigid roller; Obtain the primary roundness of the primary rigid roller and compare the primary roundness with a preset roundness; wherein, the roundness characterizes the degree to which the cross-section of the rigid roller body (110) is close to the theoretical circle; Grind the primary steel roller until the primary roundness is not greater than the preset roundness to obtain a fine-ground steel roller; The coating roller (100) is obtained by mounting the drive component (200) on one of the bearing seats (120) of the fine grinding roller.

2. The processing and assembly method of the coating roller according to claim 1, characterized in that, The surface roughness Ra of the roller body (110) is ≥3.0μm.

3. The processing and assembly method of the coating roller according to claim 1, characterized in that, The surface roughness Ra of the precision-ground steel roller is ≤0.2μm, and the preset roundness is 1μm.

4. The processing and assembly method of the coating roller according to claim 1, characterized in that, The step of obtaining the primary roundness of the primary rigid roller includes: fixing the primary rigid roller on a grinding machine and measuring the primary roundness on the grinding machine.

5. The processing and assembly method of the coating roller according to claims 1-4, characterized in that, The step of obtaining the primary roundness of the primary rigid roll includes: sequentially obtaining the primary roundness of the cross-section of the primary rigid roll at various points along the axial direction, and comparing the primary roundness with the preset roundness.

6. The processing and assembly method of the coating roller according to claim 1, characterized in that, The process of grinding the primary steel roller until the primary roundness is not greater than the preset roundness to obtain a fine-ground steel roller includes: coarsely grinding the roller surface of the primary steel roller to obtain a coarse-ground steel roller; and finely grinding the roller surface of the coarse-ground steel roller to obtain a fine-ground steel roller.

7. The processing and assembly method of the coating roller according to claim 6, characterized in that, The rough grinding of the primary rigid roller surface includes: grinding the roller surface of the primary rigid roller with a grinding wheel, wherein the feed rate of the grinding wheel is 0.001 mm, the lateral movement speed of the grinding wheel is 200-500 mm / min, and the rough grinding time is 30-60 min.

8. The processing and assembly method of the coating roller according to claim 6, characterized in that, The fine grinding of the surface of the coarse grinding roller includes: grinding the surface of the coarse grinding roller with a grinding wheel, wherein the feed rate of the grinding wheel is 0-0.0001mm, the lateral speed of the grinding wheel is 200-500mm / min, and the fine grinding time is 15-40min.

9. The processing and assembly method of the coating roller according to claim 1, characterized in that, The step of matching and installing the two bearings (130) and the two bearing seats (120) on the two shaft ends respectively includes: heating the two bearings (130) and installing the heated two bearings (130) on the two shaft ends respectively; and heating the two bearing seats (120) and installing the heated two bearing seats (120) on the two bearings (130) respectively.

10. The processing and assembly method of the coating roller according to claim 9, characterized in that, The heating temperature of the two bearings (130) is 100-150℃, and the heating temperature of the two bearing seats (120) is 100-150℃.

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