Grinding machine for conical bearing machining

Abstract

The grinding machine for conical bearing machining comprises a grinding machine body, a shell, a gradient ring, a partition plate and a flow stopping block and further comprises a magnetic driving assembly and a grinding assembly. The shell of the conical structure is arranged, the annular gap is formed between the shell and the conical bearing outer ring, non-contact type suspension supporting is achieved through fluid, the gap structure is regulated and controlled in combination with the gradient rings, the partition plates and the flow stopping blocks, and therefore distribution and flowing paths of an oil film are optimized; according to the invention, the single non-uniform state of oil film pressure distribution is converted into progressive gradient adjustment, so that stable support in the rotation process of the conical bearing is realized, clamping errors and interference caused by mechanical clamping are reduced, the problem of instability caused by disordered film pressure distribution in traditional oil film support is solved, loading disturbance is effectively buffered, and the stability of the conical bearing is improved. Deflection and machining face jumping caused by uneven axial film pressure in the grinding process are reduced, and the machining stability and the roundness precision of the inner wall of the conical bearing outer ring are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tapered bearing processing and grinding, in particular to a grinding machine for processing tapered bearings. Background Art

[0002] A grinding machine is a device specifically designed for precision grinding the rotating surfaces of tapered bearing components. It is commonly used to machine the inner and outer rings, raceways, ribs, and other functional surfaces of tapered bearings to ensure dimensional accuracy, geometric shape precision, and surface roughness, meeting the requirements of high-speed, heavy-load, or high-precision rotation. Tapered roller tapered bearings are a common rolling tapered bearing structure, typically with a tapered raceway on their outer rings. These tapered bearings are widely used in automotive wheel hubs, machine tool spindles, and wind turbine spindle systems, which are subject to complex load conditions and have extremely high requirements for the geometric accuracy and surface quality of their inner and outer ring raceways.

[0003] In existing technology, machining the inner wall of a tapered bearing outer ring typically involves a mechanical clamping structure to secure the tapered bearing outer ring to a fixture or spindle. However, the tapered outer ring has an inclined surface, and conventional mechanical clamping structures are prone to axial slippage or eccentric clamping during positioning, making it difficult to ensure that the clamping center is aligned with the rotation center. Furthermore, since the clamping force is applied across a limited contact surface, it can easily cause localized deformation, reducing the dimensional and shape accuracy of the workpiece. Furthermore, under high-speed rotation and grinding loads, the contact clamping structure can also cause vibration, resonance, and impact, seriously impacting machining stability and surface quality.

[0004] Therefore, it is necessary to design a grinding machine for processing tapered bearings to solve the above problems. Summary of the Invention

[0005] The present invention overcomes the deficiencies of the prior art and provides a grinding machine for processing tapered bearings.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a grinding machine for processing tapered bearings, comprising:

[0007] The grinding machine body is used for grinding the rotating surface of tapered bearing components;

[0008] Clamping and fixing components, clamping tapered bearing outer ring;

[0009] The clamping and fixing assembly includes a housing, wherein the inner wall of the housing is a tapered structure, and the inner wall of the housing cooperates with the tapered surface of the outer ring of the tapered bearing to be processed to form an annular gap;

[0010] A gradient ring is fitted on the inner wall of the large diameter end of the housing to arrange the annular gap 3 in a gradient in the axial direction;

[0011] a partition plate, fitted on the inner wall of the middle end of the shell, wherein the width of the partition plate is smaller than the height of the annular gap;

[0012] At least two flow-blocking blocks are provided and are fitted on the inner wall of the small-diameter end of the housing;

[0013] The invention also includes a magnetic driving component for driving the outer ring of the tapered bearing to rotate, and a grinding component for performing rotational processing on the inner wall of the outer ring of the tapered bearing.

[0014] In a preferred embodiment of the present invention, the angle between the inclined surface of the gradient ring and the inner wall of the housing is 5° to 10°, and the minimum gap between the gradient ring and the outer ring of the tapered bearing is controlled to be 0.5 to 1 mm.

[0015] In a preferred embodiment of the present invention, the plurality of baffles are equidistantly distributed along the circumferential direction, the height of the baffle is 0.75 to 0.85 times the width of the annular gap, and the axial length of the baffle accounts for 10% to 15% of the total length of the small diameter end.

[0016] In a preferred embodiment of the present invention, the width of the partition plate is 1 / 2 to 2 / 3 of the width of the annular gap.

[0017] In a preferred embodiment of the present invention, a plurality of fluid channels are provided on the partition plate, and the plurality of fluid channels are fan-shaped holes uniformly distributed along the circumference of the partition plate.

[0018] In a preferred embodiment of the present invention, the axial position of the baffle is 1 / 8 to 1 / 6 of the total length of the tapered bearing outer ring from the end surface of the small diameter end.

[0019] In a preferred embodiment of the present invention, the side wall of the housing is provided with an oil inlet and an oil outlet, the inlet is located at the large diameter end side, and the outlet is located at the small diameter end side.

[0020] In a preferred embodiment of the present invention, a sealing ring is provided at the small diameter end of the housing, and a plurality of annular sealing ridges are provided at the position where the sealing ring contacts the outer ring of the tapered bearing.

[0021] In a preferred embodiment of the present invention, the magnetic drive assembly is an annular magnetic drive, and the output end of the annular magnetic drive is attached to the outer ring of the tapered bearing and seals the annular gap.

[0022] In a preferred embodiment of the present invention, the inner diameter of the sealing ring is the same as the inner diameter of the smallest diameter end of the tapered bearing outer ring.

[0023] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0024] (1) The present invention provides a grinding machine for processing tapered bearings. The grinding machine has a conical outer shell and forms an annular gap between the outer shell and the outer ring of the tapered bearing. The non-contact suspension support is realized by fluid. The gap structure is regulated by the gradient ring, the partition plate and the flow block, thereby optimizing the spatial distribution and flow path of the oil film. The oil film pressure distribution is changed from a single uneven state to a progressive gradient adjustment, thereby realizing stable support during the rotation of the tapered bearing, reducing the clamping error and interference caused by mechanical clamping, and overcoming the instability problem caused by the disordered film pressure distribution in the traditional oil film support, effectively buffering the loading disturbance, reducing the deflection and the machined surface runout caused by the uneven axial film pressure during grinding, and further improving the processing stability and roundness accuracy of the inner wall of the tapered bearing outer ring.

[0025] (2) The present invention provides a grinding machine for processing tapered bearings. By setting a gradient ring, a partition plate and a flow block, a multi-level oil film pressure is formed. The gradient ring is used to reduce the annular gap in the area, so that under the high-speed rotation of the tapered bearing and the grinding load, the liquid film obtains a higher dynamic pressure support stiffness at the large end, thereby suppressing the sudden drop in film thickness and violent pressure fluctuations. The oil film channel is divided into two partitions, the front and rear, by the partition plate, to stabilize the oil flow rate and pressure distribution, effectively blocking the disturbance of the oil film transmitted from the large diameter end to the small diameter end, and improving the flow. The damping performance of the body is improved, and the flow resistance is locally increased and a pressure buffer zone is formed by the baffle, which raises the liquid film pressure at the small diameter end, suppresses excessive flow rate and film thickness fluctuation, and finely compensates for the residual pressure gradient. The three act in sequence and cooperate with each other to realize the regulation of the oil film pressure gradient from the large diameter end to the small diameter end, and build a multi-stage damping and support network in the annular gap, further reducing the fluid dynamic pressure peak and vibration amplification effect near the grinding point, thereby significantly improving the liquid film stability, anti-vibration and vibration absorption capabilities and processing accuracy during the grinding process of the tapered bearing.

[0026] (3) The present invention provides a grinding machine for processing tapered bearings. By fitting a gradient ring on the inner wall of the outer shell, the gap between the large diameter end of the outer ring of the tapered bearing and the outer shell is significantly smaller than that of the small end. The oil film pressure is structurally guided to form a gradient distribution in the axial direction. The tapered flow path with a gradually increasing gap is used to guide the fluid pressure to be gradually released from the large diameter end to the small end. It can provide local dynamic pressure support in the large diameter end area at high linear speed, effectively alleviate the problem of uneven film pressure distribution caused by the tapered bearing structure, and is conducive to forming a stable dynamic and static pressure transition zone in the entire oil film layer, improving the oil film uniformity and support stiffness during the rotation of the tapered bearing, further reducing the vibration during the grinding process, and improving the surface quality and dimensional consistency of the processed surface. At the same time, through this gradient step arrangement, the oil is guided to flow stably from the large diameter end to the small diameter end, forming an orderly dynamic pressure transition zone, achieving effective cooling, reducing the heat generated by the grinding of the tapered bearing, and improving the grinding accuracy of the tapered bearing.

[0027] (4) The present invention provides a grinding machine for processing tapered bearings, in which a plurality of flow blocks are arranged on the inner wall of the small diameter end of the shell. The flow blocks are arranged in a close fit inside the annular gap, so that the oil generates back pressure and redistribution effects during the flow process, effectively increasing the local fluid resistance at the small diameter end, increasing the oil film pressure at the small diameter end, and forming a local pressure increase area, thereby effectively balancing the axial pressure gradient and enhancing the oil film support balance of the entire tapered bearing outer ring. The flow blocks have damping characteristics, which alleviate the oil film excitation and response amplification problems when the oil film is disturbed by high-speed grinding, thereby improving the anti-vibration and vibration absorption capacity of the tapered bearing grinding; at the same time, the flow blocks provide a symmetrical hydraulic constraint for the small diameter end, limit the lateral degree of freedom, significantly reduce the eccentricity tendency of the tapered bearing, and are conducive to maintaining the center track of the oil film, thereby improving the rotation accuracy and stability during processing.

[0028] (5) The present invention provides a grinding machine for processing tapered bearings. The oil film flow channel is effectively divided into two partitions, front and rear, by the setting of a partition plate, which limits the instantaneous flow of oil, balances and stabilizes the pressure difference between the front and rear membranes, and forms a multi-stage buffer cavity, which is conducive to dispersing flow field disturbances, improving the buffering and absorption capacity of the oil film against external force disturbances, further enhancing the vibration and impact resistance of the system, ensuring grinding accuracy, and avoiding local membrane pressure drops and vibration amplification caused by sudden pressure changes; at the same time, the partition plate controls the reduction of oil flow velocity in the front area and the control of oil supply in the rear area, suppressing the excessive flow rate and uneven film thickness caused by the large gap at the small end, and ensuring the stability of the oil film at the small end. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments described in the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts.

[0030] Figure 1 It is a three-dimensional structural diagram of a preferred embodiment of the present invention;

[0031] Figure 2 is a schematic side sectional view of a preferred embodiment of the present invention and a partially enlarged schematic view thereof;

[0032] Figure 3 2 is a schematic diagram of a top view of the large diameter end of the housing of a preferred embodiment of the present invention;

[0033] In the figure: 1. Tapered bearing outer ring; 2. Housing; 3. Annular gap; 4. Gradient ring; 5. Separator plate; 6. Baffle block; 7. Fluid channel; 8. Sealing ring; 9. Annular magnetic drive. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0038] like Figure 1 and Figure 3 As shown, a grinding machine for processing tapered bearings, comprising:

[0039] The grinding machine body is used for grinding the rotating surface of tapered bearing components;

[0040] Clamping and fixing assembly, clamping tapered bearing outer ring 1;

[0041] The clamping and fixing assembly includes a housing 2, the inner wall of the housing 2 is a tapered structure, and the inner wall of the housing 2 cooperates with the tapered surface of the tapered bearing outer ring 1 of the tapered bearing to be processed to form an annular gap 3;

[0042] The gradient ring 4 is fitted on the inner wall of the large diameter end of the housing 2, and arranges the annular gap 3 in a gradient in the axial direction;

[0043] The partition plate 5 is fitted on the inner wall of the middle end of the housing 2, and the width of the partition plate 5 is smaller than the height of the annular gap 3;

[0044] At least two flow-blocking blocks 6 are provided and are fitted on the inner wall of the small-diameter end of the housing 2;

[0045] It also includes a magnetic drive component for driving the tapered bearing outer ring 1 to rotate, and a grinding component for processing the inner wall of the tapered bearing outer ring 1.

[0046] The grinder body, serving as the basic structure and drive unit of the entire machine, is equipped with grinding components for performing machining tasks, typically a grinding wheel and oilstone, specifically for machining the inner wall surface of tapered bearings. To ensure stable clamping and rotational drive of the workpiece during the grinding process, the grinder is equipped with a clamping and fixing assembly, which is used to clamp the outer ring 1 of the tapered bearing to be machined and achieves smooth rotation through a magnetic drive assembly.

[0047] The grinding assembly processes the inner wall of the tapered bearing outer ring 1 .

[0048] Among them, inside the clamping and fixing assembly, the outer shell 2 serves as the main support body, and its inner wall is designed as a conical structure, and cooperates with the tapered bearing outer ring 1 to form an annular gap 3 channel for oil flow to form a liquid static / dynamic oil film to achieve non-contact support for the bearing outer ring.

[0049] To optimize the distribution of the oil film in the tapered channel, the clamping assembly is configured with three coordinated structures:

[0050] Gradient ring 4: Installed closely against the inner wall of the large-diameter end of housing 2, its tapered step structure reduces the distance of the annular gap 3 at the large-diameter end, introducing dynamic pressure support in the high-speed area of ​​the large-diameter end, thereby forming a favorable initial pressure distribution and preventing the sudden drop in film thickness caused by high linear speed in this area. This structure ensures high rigidity and stability of the initial oil film and suppresses vibration-inducing factors in the initial section.

[0051] Specifically, by fitting the gradient ring 4 on the inner wall of the outer shell 2, the gap between the large diameter end of the tapered bearing outer ring 1 and the outer shell 2 is significantly smaller than that of the small end, structurally guiding the oil film pressure to form a gradient distribution in the axial direction, and utilizing the tapered flow path with gradually increasing gap to guide the fluid pressure to be gradually released from the large diameter end to the small end, which can provide local dynamic pressure support in the large diameter end area at high linear speed, effectively alleviate the problem of uneven film pressure distribution caused by the tapered bearing structure, and is conducive to the formation of a stable dynamic and static pressure transition zone in the entire oil film layer, thereby improving the oil film uniformity and support stiffness during the rotation of the tapered bearing, further reducing the vibration during the grinding process, and improving the surface quality and dimensional consistency of the processed surface.

[0052] Partition plate 5: fits onto the inner wall of the middle part of the shell 2, and its structural width is slightly smaller than the annular gap 3, so that it is placed in the middle of the oil flow path, forming two hydraulic partitions in the front and rear. Through a number of fluid channels 7 on the partition plate 5, while ensuring the passage of oil, the flow rate is regulated to effectively balance the front and rear pressure differences and buffer pressure fluctuations. The partition plate 5 acts as a fluid damping barrier, reducing the transmission speed of fluid disturbances and improving the overall liquid film stability.

[0053] Specifically, the setting of the partition plate 5 effectively divides the oil film flow channel into two front and rear partitions, limits the instantaneous flow of oil, balances and stabilizes the pressure difference between the front and rear membranes, and forms a multi-section buffer cavity, which is conducive to dispersing flow field disturbances, improving the oil film's buffering and absorption capacity for external force disturbances, and further enhancing the system's vibration and impact resistance, ensuring grinding accuracy, and avoiding sudden drops in local membrane pressure and vibration amplification caused by sudden pressure changes; at the same time, the partition plate 5 controls the reduction of oil flow velocity in the front area and the control of oil supply in the rear area, suppresses the excessive flow rate and uneven film thickness caused by the large gap at the small end, and ensures the stability of the oil film at the small end.

[0054] Baffle 6: Located on the inner wall of the small-diameter end, multiple baffles 6 are distributed circumferentially in the annular gap 3 to form a local fluid throttling area and back-pressure area, significantly improving the oil film pressure in the small-end area. On the one hand, it compensates for the pressure at the end of the conical oil film channel. On the other hand, its structural resistance and geometric arrangement have the function of a liquid damper, suppressing the uneven film thickness and vibration intensification problems caused by the large small-end gap. In addition, the baffle 6 also provides a hydraulic symmetry constraint to reduce the lateral eccentricity and runout of the bearing.

[0055] Specifically, the baffle 6 is arranged in a close fit inside the annular gap 3, so that the oil generates back pressure and redistribution effects during the flow process, effectively increasing the local fluid resistance at the small diameter end, increasing the oil film pressure at the small diameter end, and forming a local pressure increase area, thereby effectively balancing the axial pressure gradient and enhancing the oil film support balance of the entire tapered bearing outer ring 1. The baffle 6 has damping characteristics, which alleviates the oil film excitation and response amplification problems when the oil film is disturbed by high-speed grinding, and improves the shock absorption and shock absorption capacity of the tapered bearing grinding; at the same time, the baffle 6 provides a symmetrical hydraulic constraint for the small diameter end, limits the lateral degree of freedom, and significantly reduces the eccentricity tendency of the tapered bearing, which is conducive to maintaining the center track of the oil film and improving the rotation accuracy and stability during processing.

[0056] like Figure 2 As shown, considering that the tapered bearing has a tapered structure and a higher linear speed at the large diameter end, which can easily cause the oil film to thin or a sudden change in the local dynamic pressure peak, if the force application point is close to the large diameter end during grinding, the area is more likely to rupture the film or experience local contact vibration; therefore, in order to avoid this problem, the present invention designs a gradient ring 4, the angle between the inclined surface of the gradient ring 4 and the inner wall of the housing 2 is 5° to 10°, and the minimum gap between the gradient ring 4 and the outer ring 1 of the tapered bearing is controlled at 0.5 to 1 mm.

[0057] It should be noted that the gradient ring 4 geometrically compresses the annular gap 3 at the large-diameter end, creating a tapered oil channel area. This causes the oil velocity to gradually decrease and the pressure to gradually increase during axial flow, forming a local high-pressure oil film area at the large end. This spatial convergence effect breaks the bottleneck of the traditional oil film cavity structure, which is "large gap, rapid oil diffusion, and weak dynamic pressure support", and significantly enhances the liquid film stiffness at the large end.

[0058] The gradient ring 4 controls the gradient of the oil film pressure field by changing the gap, guiding the formation of a dynamic pressure distribution with a continuous transition from the large diameter end to the small diameter end when the bearing rotates. This flow field guidance and dynamic pressure accumulation effect effectively alleviates the abnormal amplification of fluid dynamic pressure caused by high linear speed near the grinding point. By establishing dynamic pressure support in advance at the large diameter end, it not only supports the load but also suppresses the risk of local collapse of the oil film, ensuring the structural integrity and continuity of the entire oil film, thus solving the problem of using oil film to support tapered bearings for grinding in the above considerations.

[0059] Furthermore, the configuration of gradient ring 4 helps optimize the entire lubricant flow path, ensuring an orderly flow from the large end to the small end. This not only provides dynamic pressure buffering but also promotes uniform heat diffusion along the axial direction, effectively reducing the degradation of the oil film caused by localized overheating. This is crucial for ensuring oil film temperature stability and viscosity control during machining, thereby improving the system's thermal stability and operational reliability while maintaining oil film thickness.

[0060] Therefore, the angle between the inclined surface of the gradient ring 4 and the inner wall of the shell 2 is set to 5°~10°, because it is taken into account that a too small angle will lead to a too slow gradient, the oil film dynamic pressure will not increase significantly, and the load in the large end area cannot be effectively supported; while an excessively large angle may cause the oil to separate or become turbulent during the flow process, resulting in uneven film thickness. Controlling the angle between the inclined surface of the gradient ring 4 and the inner wall of the shell 2 within the range of 5°~10° can take into account both the dynamic pressure establishment efficiency and the stable continuity of the oil film, and effectively improve the large end oil film support stiffness.

[0061] Secondly, the minimum gap between the gradient ring 4 and the tapered bearing outer ring 1 is limited to the range of 0.5 to 1 mm. A smaller gap is conducive to increasing the oil film pressure per unit area, thereby enhancing the support capacity. If the gap is too small, the oil film may be crushed or insufficient lubrication may occur, thereby causing dry friction or local heat accumulation. Controlling the gap between 0.5 and 1 mm not only ensures sufficient dynamic pressure support, but also maintains the normal flow and heat dissipation capacity of the lubricating oil, thereby stably maintaining the oil film stiffness and temperature control in the large end area.

[0062] In summary, by limiting the angle and the minimum clearance value, a fluid channel 7 that gradually tightens in the axial direction is formed, which effectively guides the oil flow direction and establishes sufficient dynamic pressure support force in the tapered big end area at high linear speed, thereby significantly improving the big end oil film stiffness and preventing sudden drop in film thickness and fluid vibration caused by structural taper and load concentration.

[0063] In the present invention, a plurality of spoilers 6 are equidistantly distributed along the circumferential direction, the height of the spoiler 6 is 0.75 to 0.85 times the width of the annular gap 3, and the axial length of the spoiler 6 accounts for 10% to 15% of the total length of the small diameter end.

[0064] The axial position of the baffle 6 is 1 / 8 to 1 / 6 of the total length of the tapered bearing outer ring 1 from the end surface of the small diameter end.

[0065] The circumferentially distributed flow blocks 6 form a symmetrical and balanced fluid interference network along the entire inner wall of the small-diameter end. This arrangement not only prevents the oil from drifting or vortexing in the annular gap 3, but also symmetrically generates backpressure zones during the fluid dynamics process, ensuring a more uniform radial pressure distribution within the oil film. Especially during the rotation of the tapered bearing, the relatively large gap at the small-diameter end and the high flow rate can easily lead to uneven oil film thickness or oil leakage. The equidistant arrangement of the flow blocks 6 effectively guides the oil into a smooth and orderly annular flow within the annular cavity, suppressing sudden changes in flow rate.

[0066] By setting the height of the baffle 6 to 0.75 to 0.85 times the width of the annular gap 3, the baffle 6 forms a significant fluid pressure drop and throttling effect on the oil flow under the premise of contacting the tapered bearing outer ring 1, thereby structurally achieving the improvement and stable regulation of the local dynamic pressure.

[0067] It should be noted that when the tapered bearing rotates at high speed, the clearance at the small end is relatively large due to the tapered convergence of the structure, and the oil is prone to form a local high-speed flow, which in turn causes film thickness fluctuation or collapse. The setting of the flow block 6 forces the oil to slow down and turn in this area, forming a local dynamic pressure buffer zone, which effectively stabilizes the film thickness at the small end.

[0068] Furthermore, the baffle 6 and the front gradient ring 4 and separator plate 5 form a three-stage pressure control system: the gradient ring 4 completes the front-end pressure rise, the separator plate 5 divides the membrane pressure area and suppresses disturbance transmission, and the baffle 6 completes the terminal pressure compensation and directional control. This multi-stage series structure setting enables the oil film to achieve gradual and stable changes in the entire annular gap 3, which helps to eliminate the oscillation caused by grinding load or flow disturbance, and improve the overall response stability of the oil film.

[0069] It is worth mentioning that since low oil film pressure can easily lead to eccentric rotation of the bearing, the baffle 6 provides a hydraulic symmetry constraint, limiting the lateral freedom of the bearing, so that it always runs stably around the central axis, thereby ensuring the rotation accuracy and concentricity control of the processing process.

[0070] In the present invention, the width of the partition plate 5 is 1 / 2 to 2 / 3 of the width of the annular gap 3 .

[0071] A plurality of fluid channels 7 are provided on the partition plate 5 , and the plurality of fluid channels 7 are fan-shaped holes uniformly distributed along the circumference of the partition plate 5 .

[0072] By setting the width of the partition plate 5 to 1 / 2 to 2 / 3 of the width of the annular gap 3, the partition plate 5 forms a restrictive throttling channel, ensuring that it has sufficient structural rigidity to stabilize the oil film flow channel without causing severe obstruction to the oil flow;

[0073] It is further proposed to set a number of fan-shaped holes evenly distributed along the circumference on the partition plate 5 to disperse the local flow velocity concentration of the oil, alleviate the fluid shear or vortex formed instantly through the partition plate 5, and maintain the continuity of the membrane pressure and membrane thickness. In addition, the uniform circumferential hole distribution helps to maintain the symmetrical flow of the oil after passing through the partition plate 5, avoiding eccentric flow or unilateral disturbance.

[0074] It should be noted that the partition plate 5 separates the high-pressure area at the large-diameter end from the low-pressure area at the small-diameter end in the annular gap 3, so that the membrane pressure change is no longer continuous and abrupt, but is divided into "front zone pressure rise section + separation transition section + rear zone adjustment section"; this segmented treatment can significantly reduce the longitudinal propagation of flow fluctuations or grinding disturbances in the oil film, which is conducive to maintaining the stability of the membrane pressure in each area.

[0075] The partition plate 5 effectively limits the oil flow passing through this section per unit time, forming a buffering effect. When the outer ring of the tapered bearing is subjected to grinding impact or sudden speed change, it can absorb part of the impact energy and delay the propagation of disturbance.

[0076] Taking into account that in the processing of tapered bearings, an axially gradually changing annular gap 3 is formed between the outer ring of the tapered bearing and the outer shell 2, and this gap serves as a space for the existence of a liquid film, which directly affects the dynamic support stability during the grinding process. By setting an oil inlet and an outlet on the side wall of the outer shell 2, and arranging them at the large diameter end and the small diameter end respectively, the oil can show "directional axial flow" along the direction of the tapered structure of the bearing. Therefore, in the present invention, an oil inlet and an outlet are provided on the side wall of the outer shell 2, the inlet is located on the large diameter end side, and the outlet is located on the small diameter end side, and both the inlet and the outlet are connected to the external oil pump.

[0077] The structural setting in which the oil is introduced from the large diameter end and exported from the small diameter end enables the oil film to flow sequentially in the entire conical surface area of ​​the bearing. This flow path can effectively cooperate with the conical gap itself, so that the film pressure presents a gradient distribution along the axial direction, which is conducive to building a stable flow field; and during the rotation of the tapered bearing, especially in the high-speed grinding stage, the large diameter end has a stronger dynamic pressure formation ability due to its large linear speed. Setting the inlet in this area allows the initial liquid to enter the "high energy area" and quickly form a stable liquid film; and since the small end has a large gap and weak dynamic pressure formation ability, setting the outlet here is conducive to forming a back pressure area, further raising the small end film pressure, and alleviating the problem of unstable film thickness.

[0078] It should be noted that the large amount of heat generated during the grinding process can be continuously removed from the support area by the flow of oil entering from the large diameter end and discharged to the small diameter end, preventing local heat accumulation.

[0079] In the present invention, a sealing ring 8 is provided at the small diameter end of the housing 2 , and a plurality of annular sealing ridges are provided at the position where the sealing ring 8 contacts the tapered bearing outer ring 1 .

[0080] The magnetic drive component is an annular magnetic drive 9 , the output end of which is fitted on the outer ring 1 of the tapered bearing and seals the annular gap 3 .

[0081] The oil overflowing from the small diameter end and the large diameter end of the housing 2 may be collected and delivered to the oil pump.

[0082] In the present invention, the inner diameter of the sealing ring 8 is the same as the inner diameter of the smallest diameter end of the tapered bearing outer ring 1 .

[0083] When the present invention is used, the tapered bearing outer ring 1 is placed from the large diameter end of the housing 2 to form an annular gap 3, and the output end of the annular magnetic driver 9 is attached to the position of the tapered bearing outer ring 1, and is attracted to the tapered bearing outer ring 1. Oil is injected into the annular gap 3 through the inlet until the annular gap 3 is filled. The tapered bearing outer ring 1 is driven to rotate by the annular magnetic driver 9, and the inner wall of the tapered bearing outer ring 1 is ground in cooperation with the grinding assembly.

[0084] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the content of the specification and must be determined according to the scope of the claims.

Claims

1. A grinding machine for processing tapered bearings, characterized in that: include: The grinding machine body is used for grinding the rotating surface of tapered bearing components; Clamping and fixing components, clamping tapered bearing outer ring; The clamping and fixing assembly includes a housing, wherein the inner wall of the housing is a tapered structure, and the inner wall of the housing cooperates with the tapered surface of the outer ring of the tapered bearing to be processed to form an annular gap; A gradient ring is fitted on the inner wall of the large diameter end of the housing to arrange the annular gap in a gradient in the axial direction; a partition plate, fitted on the inner wall of the middle end of the shell, wherein the width of the partition plate is smaller than the height of the annular gap; At least two flow-blocking blocks are provided and are fitted on the inner wall of the small-diameter end of the housing; The invention also includes a magnetic driving component for driving the outer ring of the tapered bearing to rotate, and a grinding component for performing rotational processing on the inner wall of the outer ring of the tapered bearing.

2. A grinding machine for processing tapered bearings according to claim 1, characterized in that: The angle between the inclined surface of the gradient ring and the inner wall of the housing is 5° to 10°, and the minimum gap between the gradient ring and the outer ring of the tapered bearing is controlled to be 0.5 to 1 mm.

3. The grinding machine for processing tapered bearings according to claim 1, characterized in that: The plurality of baffles are equidistantly distributed along the circumferential direction, the height of the baffle is 0.75 to 0.85 times the width of the annular gap, and the axial length of the baffle accounts for 10% to 15% of the total length of the small diameter end.

4. The grinding machine for processing tapered bearings according to claim 1, characterized in that: The width of the partition plate is 1 / 2 to 2 / 3 of the width of the annular gap.

5. The grinding machine for processing tapered bearings according to claim 4, characterized in that: A plurality of fluid channels are provided on the partition plate, and the plurality of fluid channels are fan-shaped holes uniformly distributed along the circumference of the partition plate.

6. The grinding machine for processing tapered bearings according to claim 1, characterized in that: The axial position of the baffle is 1 / 8 to 1 / 6 of the total length of the tapered bearing outer ring from the end surface of the small diameter end.

7. The grinding machine for processing tapered bearings according to claim 1, characterized in that: The side wall of the housing is provided with an oil inlet and an oil outlet, wherein the inlet is located at the large-diameter end side, and the outlet is located at the small-diameter end side.

8. The grinding machine for processing tapered bearings according to claim 1, characterized in that: A sealing ring is provided at the small diameter end of the housing, and a plurality of annular sealing convex strips are provided at the position where the sealing ring contacts the outer ring of the tapered bearing.

9. The grinding machine for processing tapered bearings according to claim 1, characterized in that: The magnetic drive assembly is an annular magnetic drive, and the output end of the annular magnetic drive is attached to the outer ring of the tapered bearing and seals the annular gap.

10. The grinding machine for processing tapered bearings according to claim 1, characterized in that: The inner diameter of the sealing ring is the same as the inner diameter of the smallest diameter end of the tapered bearing outer ring.

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