Wind power bearing raceway superfinishing device

Abstract

The utility model relates to the technical field of wind power bearing processing, in particular to a wind power bearing raceway superfinishing device, which is used for superfinishing an outer raceway of a double-row tapered roller bearing ring and comprises a superfinishing component, and the superfinishing component comprises a floating rod, a sliding rod, a connecting block, a fixed block and an adjusting screw rod. A sliding rod is arranged on the floating rod in a sliding mode, an oilstone is arranged at the end, close to the workpiece chuck, of the sliding rod, and the oilstone is used for making contact with and grinding the outer raceway; the connecting block is fixed on the sliding rod; a fixed block is fixed on the floating rod, and a nut is arranged on the fixed block; one end of the adjusting screw rod is connected with the nut, the other end of the adjusting screw rod is connected with the fixing block, and the adjusting screw rod is rotated so that the sliding rod can slide relative to the floating rod in the length direction of the floating rod. The device is easy and convenient to operate, high in safety, small in workpiece damage and improved in precision, and therefore the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine bearing processing technology, specifically to a wind turbine bearing raceway ultra-precision device. Background Technology

[0002] Wind turbine bearings are a type of rolling bearing and are one of the most widely used components in modern wind power generation. They rely on the rolling contact of the main components to support rotating parts. Most wind turbine bearings are now standardized and have advantages such as low starting torque, slow rotation, high load capacity, long service life, and easy selection.

[0003] In the rolling bearing manufacturing process, ultra-precision machining is the final step in the bearing ring machining process. It plays an important role in reducing or eliminating circular deviations left by grinding, repairing the shape errors of the raceway, refining its surface roughness to improve surface physical and mechanical properties, reducing bearing vibration and noise, and improving bearing performance.

[0004] When performing ultra-precision machining on double-row tapered roller bearing rings, a high-pressure oilstone is applied to the outer raceway surface of the workpiece under good lubrication and cooling conditions. This oilstone is then used to perform a rapid, short, reciprocating oscillation motion on the workpiece, which is rotating at a certain speed, perpendicular to the workpiece's rotation direction. Existing ultra-precision equipment typically uses a non-adjustable oilstone holder to fix the oilstone, which slides on the outer raceway of the double-row tapered roller bearing ring. Because the double-row tapered roller bearing ring has flanges at both ends and in the middle, and the outer raceway is tapered, adjusting the relative position of the oilstone and the workpiece chuck is necessary when machining rings of different diameters. This adjustment is time-consuming and labor-intensive, and can easily damage the workpiece. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a wind turbine bearing raceway ultra-precision device, which is simple and convenient to operate, has high safety, less damage to the workpiece, improves bearing life, improves precision, and thus improves product quality.

[0006] To achieve the above objectives, the present invention provides a super-precision device for wind turbine bearing raceways, used for super-precision machining of the outer raceway of double-row tapered roller bearing rings. The device includes a super-precision assembly comprising a floating rod, a sliding rod, a connecting block, a fixing block, and an adjusting screw. The sliding rod is slidably mounted on the floating rod, and an oilstone is provided at one end of the sliding rod near the workpiece chuck. The oilstone is used to contact and grind the outer raceway. The connecting block is fixed to the sliding rod. The fixing block is fixed to the floating rod, and a nut is provided on the fixing block. One end of the adjusting screw is connected to the nut, and the other end is connected to the fixing block. Rotating the adjusting screw causes the sliding rod to slide relative to the floating rod along its length.

[0007] Furthermore, it also includes a machine body, inside which a workpiece chuck is provided, and on one side of the workpiece chuck is a drive assembly. The output shaft of the drive assembly is connected to the floating rod to drive the floating rod to vibrate.

[0008] Furthermore, an elastic element is provided between the machine body and the sliding rod, one end of the elastic element is connected to the machine body, and the other end of the elastic element is connected to the end of the sliding rod where the oilstone is located.

[0009] Furthermore, the elastic element is an elastic rubber strip.

[0010] Furthermore, the elastic element is a spring.

[0011] Furthermore, the workpiece chuck is connected to a rotary drive device to drive the workpiece chuck to rotate;

[0012] The workpiece chuck has multiple radially arranged grooves, and the clamping blocks are slidably disposed in the grooves to clamp the double-row tapered roller bearing rings.

[0013] Furthermore, the clamping block includes an end face parallel to the workpiece chuck and a protrusion protruding from the end face. The end face is used to abut against one end face of the double-row tapered roller bearing race, and the protrusion is used to press against the outer diameter of the flange of the double-row tapered roller bearing race.

[0014] Furthermore, a stop block is provided between adjacent locking blocks, and the stop block is slidably disposed in the sliding groove, abutting against the outer diameter of the flange of the double-row tapered roller bearing ring.

[0015] When machining raceways of different diameters, the double-row tapered roller bearing raceways mounted on the workpiece chuck need to be removed. This can be done by rotating the adjusting screw to allow the sliding rod to slide relative to the floating rod along its length, causing the oilstone mounted at the end of the sliding rod to detach from the outer raceway surface and avoid the end flange above the outer raceway. Then, the double-row tapered roller bearing raceway is moved upwards and removed. After placing the double-row tapered roller bearing raceway to be machined, the adjusting screw is rotated to allow the sliding rod to slide relative to the floating rod along its length, causing the oilstone mounted at the end of the sliding rod to approach the outer raceway surface. Under good lubrication and cooling conditions, the super-fine oilstone is pressed against the outer raceway surface of the workpiece with low pressure. The double-row tapered roller bearing raceway rotates, and the oilstone vibrates and polishes the outer raceway surface of the workpiece slightly.

[0016] The beneficial effects of this utility model are as follows: The above-mentioned wind turbine bearing raceway ultra-precision device is equipped with an adjusting screw, which can be adjusted within a certain range, allowing the oilstone to move away from the outer raceway of the workpiece. When necessary, it can avoid the end flange of the double-row tapered roller bearing ring. The operation is simple and convenient, with high safety, less workpiece damage, and improved bearing life. In addition, the position of the oilstone can be steplessly adjusted using the adjusting screw, controlling the pressure of the oilstone on the outer raceway surface of the workpiece, thus improving the processing accuracy and product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a wind turbine bearing raceway ultra-precision device in one embodiment of the present invention;

[0018] Figure 2 for Figure 1 A magnified view of the contact position between the outer raceway of the double-row tapered roller bearing ring and the ultra-precision assembly;

[0019] Figure 3 This is a schematic diagram of the structure of the ultra-precision component in one embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of the ultra-precision component in one embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the workpiece chuck in one embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the driving component in one embodiment of the present invention;

[0023] In the picture:

[0024] 100. Machine body; 110. Workpiece chuck; 111. Slide groove; 112. Clamping block; 1121. End face; 1122. Protrusion; 120. Output shaft; 113. Stop block.

[0025] 200. Ultra-precision component; 210. Floating rod; 220. Sliding rod; 221. Oilstone; 230. Connecting block; 240. Fixing block; 241. Nut; 250. Adjusting screw; 260. Elastic element.

[0026] 300. Drive assembly; 310. Slider; 320. Slide rail; 330. Connecting rod; 340. Crank.

[0027] 10. Double row tapered roller bearing raceway; 11. Outer raceway; 12. Outer diameter of flange. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] See Figure 1 and Figure 2 The diagram shows a schematic of the structure of a wind turbine bearing raceway ultra-precision device according to an embodiment of the present invention, which is used to perform ultra-precision machining on the outer raceway 11 of a double-row tapered roller bearing ring 10. The device includes a machine body 100, a workpiece chuck 110 inside the machine body 100, a drive assembly 300 on one side of the workpiece chuck 110, and an output shaft 120 of the drive assembly 300 connected to the ultra-precision assembly 200.

[0030] See Figure 3 and Figure 4The ultra-precision assembly 200 includes a floating rod 210, a sliding rod 220, a connecting block 230, a fixing block 240, an adjusting screw 250, and an elastic element 260. The floating rod 210 is connected to the output shaft 120, and the output shaft 120 drives the floating rod 210 to vibrate. The sliding rod 220 is slidably mounted on the floating rod 210. An oilstone 221 is provided at one end of the sliding rod 220 near the workpiece chuck 110. The oilstone 221 is used to contact and grind the outer raceway 11. In actual processing, under good lubrication and cooling conditions, the ultra-precision oilstone is pressed against the surface of the outer raceway 11 of the workpiece with low pressure, and performs a fast and short reciprocating oscillating motion on the workpiece rotating at a certain speed perpendicular to the workpiece rotation direction. The connecting block 230 is fixed to the sliding rod 220; the fixing block 240 is fixed to the floating rod 210, and a nut 241 is provided on the fixing block 240; one end of the adjusting screw 250 is connected to the nut 241, and the other end is connected to the fixing block 240. Rotating the adjusting screw 250 allows the sliding rod 220 to slide relative to the floating rod 210 along the length direction of the floating rod 210; one end of the elastic element 260 is connected to the machine body 100, and the other end is connected to the end of the sliding rod 220 where the oilstone is provided.

[0031] When machining bearing rings of different diameters, the double-row tapered roller bearing ring 10 mounted on the workpiece chuck 110 needs to be removed. This can be done by rotating the adjusting screw 250 to allow the sliding rod 220 to slide relative to the floating rod 210 along its length, causing the oilstone 221 mounted at the end of the sliding rod 220 to detach from the surface of the outer raceway 11 and avoid the end flange 12 above the outer raceway 11. Then, the double-row tapered roller bearing ring 10 is moved upward and removed. After placing the double-row tapered roller bearing ring 10 to be machined, the adjusting screw 250 is rotated to allow the sliding rod 220 to slide relative to the floating rod 210 along its length, causing the oilstone 221 mounted at the end of the sliding rod 221 to approach the surface of the outer raceway 11. Under good lubrication and cooling conditions, the super-fine oilstone is pressed against the surface of the outer raceway 11 of the workpiece with low pressure. The double-row tapered roller bearing ring 10 rotates, and the oilstone vibrates and grinds the surface of the outer raceway 11 of the workpiece. The aforementioned ultra-precision device for wind turbine bearing raceways is equipped with an adjusting screw 250, which can be adjusted within a certain range, allowing the honing stone 221 to move away from the outer raceway 11 of the workpiece. When necessary, it can avoid the end flange 12 of the double-row tapered roller bearing ring 10. The operation is simple and convenient, with high safety, less workpiece damage, and improved bearing life. In addition, the position of the honing stone 221 can be steplessly adjusted using the adjusting screw 250, controlling the pressure of the honing stone 221 on the surface of the outer raceway 11 of the workpiece, thus improving the machining accuracy and product quality.

[0032] In one embodiment, see Figure 6The diagram shows a schematic of the drive assembly 300. The drive assembly 300 employs a crank-slider mechanism. A drive device (not shown) drives the slider 310 to slide within the groove 320, causing the connecting rod 330 to move, which in turn drives the crank 340 to oscillate. That is, the reciprocating motion of the slider 310 drives the reciprocating motion of the crank 340. The oscillating end of the crank 340 is connected to an output shaft 120, which in turn drives the floating rod 210 on the other side to vibrate. It should be noted that the sliding of the slider 310 can be achieved by using a ball screw or crank-slider mechanism. Besides this embodiment, the drive assembly 300 can also be configured in other ways, as long as it can cause the micro-wear of the ultra-precision stone at the end of the sliding rod 220. The configuration of the drive assembly 300 is a conventional technique in the field of ultra-precision machinery.

[0033] In one embodiment, the elastic element 260 is an elastic rubber strip.

[0034] Preferably, in one embodiment, the elastic element 260 is a spring.

[0035] The aforementioned wind turbine bearing raceway ultra-precision device is equipped with an elastic element 260, which plays a floating connection role within a certain range during the ultra-precision process. The elastic element 260 reciprocates and pulls back and forth to control the ultra-precision range and angle.

[0036] like Figure 5 As shown, in one embodiment, the workpiece chuck 110 is connected to a rotary drive device (not shown) to drive the workpiece chuck 110 to rotate. Specifically, a conventional rotary drive device in the art is used, with a drive motor and reducer, and the rotary output shaft connected to the center of the workpiece chuck 110 to drive the workpiece chuck 110 to rotate. The workpiece chuck 110 has multiple radially arranged sliding grooves 111, and clamping blocks 112 are slidably disposed in the sliding grooves 111 to clamp the double-row tapered roller bearing races 10. The clamping blocks 112 are provided with multiple clamping blocks that clamp the double-row tapered roller bearing races 10 inward from various circumferential directions.

[0037] Specifically, such as Figure 2 As shown, in one embodiment, the chuck 112 includes an end face 1121 parallel to the workpiece chuck and a protrusion 1122 protruding from the end face 1121. The end face 1121 is used to abut against one side end face of the double row tapered roller bearing ring 10, and the protrusion 1122 is used to press against the outer diameter 12 of the flange of the double row tapered roller bearing ring 10.

[0038] To ensure more stable positioning of the double-row tapered roller bearing race 10, such as... Figure 5As shown, in one embodiment, a stop 113 is provided between adjacent locking blocks 112. The stop 113 is slidably disposed in the slide groove 111 and abuts against the outer diameter 12 of the flange of the double-row tapered roller bearing ring 10. Multiple stops 113 limit the double-row tapered roller bearing ring 10 from various circumferential directions, further improving the stability of the workpiece and thus facilitating improved machining accuracy.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

Claims

1. A wind turbine bearing race superfinishing device for superfinishing the outer race of a double row tapered roller bearing cup, characterized by: The super-precision assembly comprises a floating rod; a sliding rod slidably arranged on the floating rod, one end of the sliding rod being provided with an oil stone for contacting and grinding the outer raceway; a connecting block fixed to the sliding rod; a fixed block fixed to the floating rod, the fixed block being provided with a nut; an adjusting screw, one end of the adjusting screw being connected with the nut and the other end of the adjusting screw being connected with the fixed block, the adjusting screw being rotated to make the sliding rod slide along the length direction of the floating rod relative to the floating rod.

2. The device according to claim 1, characterized in that: The machine body is internally provided with a workpiece chuck, one side of the workpiece chuck being provided with a driving assembly, an output shaft of the driving assembly being connected with the floating rod to drive the floating rod to vibrate.

3. The device according to claim 2, characterized in that: An elastic member is arranged between the machine body and the sliding rod, one end of the elastic member being connected with the machine body and the other end of the elastic member being connected with one end of the sliding rod provided with the oil stone.

4. The device according to claim 3, wherein: The elastic member is an elastic rubber belt.

5. The device according to claim 3, wherein: The elastic member is a spring.

6. A device for superfinishing a raceway of a wind turbine bearing according to any one of claims 2-5, characterized in that: The workpiece chuck is connected with a rotary driving device to drive the workpiece chuck to rotate. The workpiece chuck is provided with a plurality of radial sliding grooves, and a clamping block is slidably arranged in the sliding groove to clamp the double-row tapered roller bearing ring.

7. The device according to claim 6, characterized in that: The clamping block comprises an end face parallel to the workpiece chuck and a convex portion protruding from the end face, the end face being used to abut against one side end face of the double-row tapered roller bearing ring, and the convex portion being used to abut against the outer diameter of the stop edge of the double-row tapered roller bearing ring.

8. The device according to claim 6, characterized in that: Adjacent clamping blocks are provided with a stop block, the stop block being slidably arranged in the sliding groove and abutting against the outer diameter of the stop edge of the double-row tapered roller bearing ring.

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