Bearing preset destroying device and bearing destroying method

Abstract

The invention provides a bearing preset destroying device and a bearing destroying method. The bearing preset destroying device comprises a clamping mechanism; the base frame assembly is arranged on one side of the clamping mechanism; the destruction loading mechanism comprises a housing arranged on the base frame assembly, a loading head assembly slidably arranged on the housing, and a driving piece connected with the loading head assembly; and the driving piece can drive the loading head assembly to move, so that a loading head on the loading head assembly loads a load on the bearing inner ring fixed on the clamping mechanism. By arranging special equipment, the bearing inner ring can be well fixed and positioned, the load applied to the bearing inner ring can be controlled through the loading head assembly, and then the preset damage test of the bearing inner ring is effectively completed.

Description

Technical Field

[0001] This invention relates to the field of bearing failure testing, and specifically to a bearing pre-failure device and bearing failure method. Background Technology

[0002] The main shaft bearings of aero-engines have stringent operating requirements, needing to ensure smooth operation of the engine rotor while also requiring long service life and high reliability. Therefore, in order to understand the defect propagation rate of the main shaft bearings and study the vibration phenomenon during the defect propagation process, it is necessary to conduct a pre-destruction test on the main shaft bearings, artificially causing certain damage to the bearing raceway load-bearing area, and then testing the damaged bearings.

[0003] In related technologies, bearing pre-destruction tests are mainly performed using a Rockwell hardness tester or by manually tapping a diamond drill bit. However, the Rockwell hardness tester is primarily used to measure hardness, and when used for bearing pre-destruction tests, it is difficult to clamp and position the bearing, and it cannot be effectively compatible with the bearing. Furthermore, when using a diamond drill bit by hand, the loading force cannot be effectively controlled.

[0004] In summary, the bearing pre-destruction test in the relevant technology has problems such as the inability to effectively position and clamp the bearing, and the inability to control the loading force. Summary of the Invention

[0005] The present invention is made to solve the above-mentioned technical problems. Its purpose is to provide a bearing pre-destruction device and bearing destruction method, which can solve the problems in the bearing pre-destruction test in the related technology, such as the inability to effectively position and clamp the bearing inner ring and the inability to control the loading force.

[0006] In a first aspect, this application discloses a bearing pre-destruction device, comprising: a clamping mechanism; a base frame assembly disposed on one side of the clamping mechanism; and a destruction loading mechanism, comprising a housing disposed on the base frame assembly, a loading head assembly slidably disposed on the housing, and a driving member connected to the loading head assembly; the driving member is capable of driving the loading head assembly to move so that the loading head on the loading head assembly applies a load to the inner ring of the bearing fixed on the clamping mechanism.

[0007] Optionally, the base frame assembly includes: a fixed frame, disposed on one side of the clamping mechanism; a lifting frame, movably disposed on the fixed frame; an adjusting screw, the first end of which is rotatably disposed on the fixed frame and screw-driven into a threaded hole on the lifting frame; a support arm, disposed on the lifting frame and connected to the cover; the adjusting screw is rotatable to move the lifting frame away from or closer to the fixed frame.

[0008] Optionally, the support arm is slidably mounted on the lifting frame, and the sliding direction of the support arm is different from the lifting direction of the lifting frame.

[0009] Optionally, the base frame assembly also includes a rocker arm rotatably connected to a support arm, and the housing is connected to the support arm via the rocker arm.

[0010] Optionally, a first mounting ring is provided around the periphery of the clamping mechanism, and the side of the fixing frame facing the first mounting ring is a first arc surface. The fixing frame slides with the first mounting ring through the first arc surface and the side of the ring, so that the base frame assembly can move along the circumference of the clamping mechanism.

[0011] Optionally, it also includes: a dial mounted on the clamping mechanism; a movable pen holder disposed on the clamping mechanism and movable along the circumference of the clamping mechanism; and a marking pen movably disposed on the movable pen holder for use away from or near the inner ring of the bearing, with the dial and marking pen arranged sequentially in the direction away from the clamping mechanism.

[0012] Optionally, it also includes a limiting member, wherein the marking pen is positioned between the limiting member provided on the first side of the dial and the limiting member provided on the second side of the dial.

[0013] Optionally, the limiting member is a fixing bolt, the limiting member passes through the dial and is threaded to the clamping mechanism, the dial is fixed between the clamping mechanism and the bolt head of the limiting member, and the marking pen is located between the bolt head of the limiting member provided on the first side of the dial and the bolt head of the limiting member provided on the second side of the dial.

[0014] Optionally, it also includes a pressure plate connected to a movable pen holder, through which the marking pen passes. The pressure plate can press and fix the marking pen to the movable pen holder, and can also release the marking pen.

[0015] Optionally, the dial and the location of the destructive loading mechanism are offset from each other.

[0016] Optionally, the driving component is a driving screw, which is screw-driven and fitted with the housing, and is rotatably connected to the sliding seat; the pre-setting destruction device also includes a loading block, a pressure sensor, a controller, and an industrial computer, which are electrically connected in sequence. The loading block is located on the pressure sensor, and the driving component can drive the loading head to apply a load to the loading block; the pressure sensor can respond to the load applied to the loading block to generate a load signal; the industrial computer can respond to the load signal transmitted by the controller to record the load value applied to the loading block.

[0017] Secondly, this application discloses a bearing failure method, applied to a bearing pre-failure device, the method comprising:

[0018] Fix the clamping mechanism to the platform, and clamp the inner ring of the bearing onto the clamping mechanism;

[0019] Performing the loading head adjustment process includes: adjusting the loading head to the corresponding bearing inner ring;

[0020] Performing a pre-set destruction process includes: controlling the drive unit to drive the loading head to apply a load to the inner ring of the bearing until the inner ring of the bearing is pre-destroyed.

[0021] Optionally, prior to the pre-set failure process, the bearing failure method further includes:

[0022] The marking process includes:

[0023] Move the marker pen along with the movable pen holder to the first side of the dial;

[0024] Use a movable marking pen to mark the inner ring of the bearing;

[0025] Move the marker pen away from the inner ring of the bearing;

[0026] Following the pre-destruction process, the bearing failure method also includes an indexing process, which includes:

[0027] Move the marker pen along with the movable pen holder to the second side of the dial;

[0028] Control the clamping mechanism to release the inner ring of the bearing;

[0029] Rotate the inner ring of the bearing so that the mark position on the inner ring corresponding to the first side of the dial moves to the second side of the dial.

[0030] Control the clamping mechanism to fix the inner ring of the bearing;

[0031] Return to the marking process until the inner ring of the bearing completes one revolution to achieve the pre-set destruction at each indexing position.

[0032] Optionally, performing the pre-set destruction process includes: applying a torque value corresponding to a load threshold to the drive component, and driving the loading head to apply a load of the load threshold to the inner ring of the bearing.

[0033] Optionally, the loading head adjustment process includes adjusting the loading head to the corresponding bearing inner ring by rotating the adjusting screw, moving the support arm, and rotating the rocker arm at least one of these operations.

[0034] Optionally, the loading head adjustment process further includes: controlling the base frame assembly to move circumferentially along the clamping mechanism to adjust the position of the loading head.

[0035] The beneficial effects of this invention are as follows:

[0036] This application discloses a bearing pre-destruction device, comprising: a clamping mechanism; a base frame assembly disposed on one side of the clamping mechanism; and a destruction loading mechanism, comprising a housing disposed on the base frame assembly, a loading head assembly slidably disposed on the housing, and a driving member connected to the loading head assembly; the driving member is capable of driving the loading head assembly to move so that the loading head on the loading head assembly applies a load to the inner ring of the bearing fixed on the clamping mechanism.

[0037] It can be seen that by setting up dedicated equipment, the inner ring of the bearing can be fixed and positioned well, and the load applied to the inner ring of the bearing can be controlled by the loading head assembly, thereby effectively completing the pre-destruction test of the inner ring of the bearing. Attached Figure Description

[0038] The above-described features and advantages of the present invention will be better understood after reading the following detailed description of embodiments of the present disclosure in conjunction with the accompanying drawings. In the drawings, components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals.

[0039] Figure 1 This is a schematic diagram of the first method for destroying the inner ring of the bearing according to the present invention;

[0040] Figure 2 This is a second schematic diagram of the present invention involving the destruction of the bearing inner ring;

[0041] Figure 3 This is a structural diagram of the destructive loading mechanism of the present invention;

[0042] Figure 4 This is a schematic diagram of the calibration load of the present invention;

[0043] Figure 5 This is the third schematic diagram of the present invention for damaging the inner ring of the bearing;

[0044] Figure 6 This is a schematic diagram of the marking process of the present invention;

[0045] Figure 7 This is a schematic diagram of the pre-set destruction process of the present invention;

[0046] Figure 8 This is a schematic diagram of the indexing process of the present invention;

[0047] Figure 9 This is a schematic diagram of the repeating marking process of the present invention;

[0048] Figure 10 This is a schematic diagram of the repeated pre-set destruction process of the present invention;

[0049] Figure 11 This is a schematic diagram of the repeatable indexing process of the present invention.

[0050] Explanation of reference numerals in the attached figures:

[0051] 60 - Inner ring of bearing,

[0052] 10-Clamping mechanism,

[0053] 11-Chuck body, 12-Chuck jaw seat, 13-Chuck jaw, 14-First mounting ring,

[0054] 20-Base frame assembly,

[0055] 21-Fixed frame, 22-Lifting frame, 23-Adjusting screw, 24-Support arm, 25-Drive nut, 26-Guide rod, 27-Clamp, 28-Auxiliary support frame, 29-Rocker arm,

[0056] 30-Destructive loading mechanism,

[0057] 31-Cover, 311-Flange ring, 32-Drive component, 33-Loading head, 34-Sliding seat, 35-Fixed seat, 36-Set screw, 37-Limit pin

[0058] 40-Identification Components

[0059] 41-Dial, 42-Modible pen holder, 43-Marker pen, 44-Limiting component, 45-Pressure plate

[0060] 50-Load Calibration Component

[0061] 51-Loading block, 52-Pressure sensor, 53-Controller, 54-Industrial computer. Detailed Implementation

[0062] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0063] It should be noted that these and other accompanying drawings are merely examples and are not drawn to scale, and should not be construed as limiting the scope of protection of the present invention.

[0064] In related technologies, bearing pre-destruction tests are mainly conducted using Rockwell hardness testers or by manually tapping diamond drill bits. However, these methods lack specialized testing equipment, leading to problems such as ineffective bearing positioning and clamping, and difficulty in controlling the loading force. Therefore, this application's technical solution addresses these issues. The following section discusses... Figures 1-11 To elaborate.

[0065] like Figure 1 and Figure 3 As shown, this invention discloses a bearing pre-destruction device, comprising: a clamping mechanism 10, a base frame assembly 20, and a destruction loading mechanism 30. The clamping mechanism 10 is used to clamp and position the bearing inner ring 60 undergoing the destruction test. The base frame assembly 20 is disposed on one side of the clamping mechanism 10. The destruction loading mechanism 30 includes a housing 31, a loading head assembly, and a drive member 32. The housing 31 is disposed on the base frame assembly 20, the loading head assembly is slidably disposed on the housing 31, and the drive member 32 is connected to the loading head assembly. The drive member 32 can drive the loading head assembly to move, so that the loading head 33 on the loading head assembly applies a load to the bearing inner ring 60 fixed on the clamping mechanism 10, thereby completing the pre-destruction of the bearing inner ring 60.

[0066] It can be seen that by setting up dedicated equipment, the inner ring 60 of the bearing can be fixed and positioned well, and the load applied to the inner ring 60 of the bearing can be controlled by the loading head assembly, thereby effectively completing the pre-destruction test of the inner ring 60 of the bearing.

[0067] Optionally, in order to adapt to bearing inner rings 60 of different specifications and to flexibly adjust the load loading position, the base frame assembly 20 can be provided with: a fixed frame 21, a lifting frame 22, an adjusting screw 23, a support arm 24, and a drive nut 25.

[0068] The fixed frame 21 is located on one side of the clamping mechanism 10; the lifting frame 22 is movably mounted on the fixed frame 21; the first end of the adjusting screw 23 is rotatably mounted on the fixed frame 21 and screw-driven into the threaded hole on the lifting frame 22; the support arm 24 is located on the lifting frame 22 and is connected to the cover 31. The drive nut 25 is sleeved on the adjusting screw 23.

[0069] By clamping the drive nut 25 with a wrench or other tools, the adjusting screw 23 can be rotated, thereby moving the lifting frame 22 away from or closer to the fixed frame 21, thus achieving the height adjustment of the destructive loading mechanism 30. Here, the height direction is consistent with the lifting direction of the lifting frame 22.

[0070] Optionally, the base frame assembly 20 also includes a guide rod 26. The first end of the guide rod 26 is fixed to the fixed frame 21, and the extension direction of the guide rod 26 is consistent with that of the lifting frame 22. The through hole on the lifting frame 22 is movably fitted onto the guide rod 26. Through the guiding action of the guide rod 26, the lifting frame 22 can be prevented from deviating from the predetermined path during lifting, thereby improving the motion accuracy.

[0071] Furthermore, multiple guide rods 26 can be provided, such as four, to further improve the guiding effect.

[0072] Furthermore, the lifting frame 22 is equipped with clamps 27, which correspond one-to-one with guide rods 26. The hollow area formed between the clamps 27 and the lifting frame 22 corresponds to the through holes provided on the lifting frame 22, and the guide rods 26 pass through the hollow area and the through holes in sequence. In this way, firstly, the guiding effect of the guide rods 26 on the lifting frame 22 can be improved; secondly, the clamps 27, in conjunction with the lifting frame 22, can clamp the guide rods 26 to a certain extent, achieving auxiliary limiting.

[0073] Furthermore, the base frame assembly 20 also includes an auxiliary support frame 28, a lifting frame 22 located between the auxiliary support frame 28 and the fixed frame 21, a second end of a guide rod 26 fixed to the auxiliary support frame 28, and a second end of an adjusting screw 23 rotatably mounted on the auxiliary support frame 28. The auxiliary support frames 28 are arranged in pairs along the width direction of the base frame assembly 20, and each auxiliary support frame 28 is connected to multiple guide rods 26. The multiple guide rods 26 connected to the auxiliary support frame 28 are arranged sequentially along the length direction of the base frame assembly 20, which can improve the structural stability of the base frame assembly 20.

[0074] Optionally, one of the support arm 24 and the lifting frame 22 is provided with a guide rail, and the other is provided with a slide groove. The slide groove and the guide rail are slidably engaged. The support arm 24 is slidably mounted on the lifting frame 22 through the guide rail and the slide groove. The sliding direction of the support arm 24 is different from the lifting direction of the lifting frame 22. The sliding direction of the support arm 24 can be understood as the length direction of the base frame assembly 20, or as the radial direction of the clamping mechanism 10, so as to realize the position adjustment of the destructive loading mechanism 30 along the radial direction of the clamping mechanism 10, improve the adjustment flexibility of the pre-set destructive device, and improve the compatibility with bearing inner rings 60 of different specifications.

[0075] Furthermore, the support arm 24 is equipped with a guide rail, and the lifting frame 22 is equipped with a T-shaped slide groove. After the support arm 24 is adjusted to the required position, its position can be fixed by the T-bolt and nut assembly, which will not be described in detail here.

[0076] Optionally, the base frame assembly 20 also includes a rocker arm 29, which is rotatably connected to the support arm 24. The cover 31 is connected to the support arm 24 through the rocker arm 29. By rotating the rocker arm 29, the tilt position of the destructive loading mechanism 30 can be adjusted, thereby adjusting the direction of the load applied to the bearing inner ring 60, improving the adjustment flexibility of the pre-set destructive device, and improving the compatibility with bearing inner rings 60 of different specifications.

[0077] Furthermore, the support arm 24 is provided with a pair of lugs at one end connected to the rocker arm 29, and the rocker arm 29 is located between the pair of lugs. By passing fasteners through the lugs and the rocker arm 29, the damped rotation of the rocker arm 29 can be realized, as well as the rocker arm 29 can be fixed after being adjusted to a suitable angle.

[0078] Furthermore, the cover 31 is provided with a flange ring 311, through which the rocker arm 29 passes and is overlapped on the rocker arm 29 by the flange ring 311. Multiple sets of bolt fastening components are passed between the rocker arm 29 and the flange ring 311, thereby improving the connection stability between the destructive loading mechanism 30 and the rocker arm 29.

[0079] Optionally, the loading head assembly includes a sliding seat 34, a fixed seat 35, and a loading head 33 arranged sequentially. The sliding seat 34 is slidably disposed in the cover 31, and a driving member 32 is connected to the sliding seat 34. The driving member 32 can drive the loading head 33 to slide with the sliding seat 34.

[0080] Furthermore, the sliding seat 34 and the fixed seat 35 are threaded together, the loading head 33 is inserted into the fixed seat 35, and the fixed seat 35 is fixed to the loading head 33 by passing through the set screw 36, thereby realizing the disassembly and replacement between them.

[0081] Furthermore, a pair of limiting pins 37 are provided on the sliding seat 34, the sliding seat 34 is located between the pair of limiting pins 37, and the sliding seat 34 is provided with a sliding groove. The sliding seat 34 slides and the limiting pins 37 to prevent the sliding seat 34 from detaching abnormally.

[0082] Optionally, the clamping mechanism 10 is a chuck assembly, such as a three-jaw chuck. Specifically, the clamping mechanism 10 includes a chuck body 11, a plurality of jaw seats 12 movably disposed on the chuck body 11, and jaws 13 disposed on the jaw seats 12. A jaw drive mechanism connecting the jaw seats 12 is disposed within the chuck body 11. The plurality of jaws 13 are arranged around the rotational axis of the chuck body 11, and the plurality of jaws 13 form an area for mounting the bearing inner ring 60. The jaw drive mechanism can control the plurality of jaws 13 to retract radially or move away from each other to achieve fixing or releasing the bearing inner ring 60.

[0083] Furthermore, a protective pad can be provided on the portion of the chuck 13 facing the inner ring 60 of the bearing to prevent hard contact from damaging the inner ring 60 of the bearing.

[0084] Optionally, the chuck 13 can be adapted to the specifications of the bearing inner ring 60 via a chuck adapter to position the chuck 13 at different locations on the chuck seat 12, for example... Figure 1 The chuck 13 shown is used to clamp the inner ring 60 of the bearing with an inner diameter of φ120mm~φ260mm. Figure 2 The chuck 13 shown is used to clamp the bearing inner ring 60 with an inner diameter of φ260mm~φ450mm via a chuck adapter seat, which will not be described in detail here.

[0085] Optionally, a first mounting ring 14 is provided around the periphery of the clamping mechanism 10. The first mounting ring 14 and the chuck body 11 are coaxially arranged. The side of the fixing frame 21 facing the first mounting ring 14 is a first arc surface. The fixing frame 21 slides with the first mounting ring 14 through the first arc surface and the side of the ring, so that the base frame assembly 20 can move along the circumference of the clamping mechanism 10. For example, the fixing frame 21 and the first mounting ring 14 slide in contact, or the fixing frame 21 and the first mounting ring 14 are slidably connected by setting a slider and a slide rail, etc., thereby realizing the overall position adjustment of the base frame assembly 20 and improving the adjustment flexibility of the device of the present invention.

[0086] Optionally, the pre-destruction test typically requires selecting multiple destruction locations along the circumference of the bearing inner ring 60. To ensure uniform distribution among the destruction locations, the pre-destruction device can include a marking component 40, which includes a dial 41, a movable pen holder 42, and a marking pen 43. The dial 41 is mounted on the clamping mechanism 10; the movable pen holder 42 is located on the clamping mechanism 10 and can move circumferentially along it; the marking pen 43 is movably located on the movable pen holder 42 and can move radially along the clamping mechanism 10. The clamping mechanism 10, dial 41, and marking pen 43 are sequentially arranged along the axial direction of the clamping mechanism 10. The marking pen 43 is used to mark the position of the bearing inner ring 60, either near or away from it. Angle positioning can be achieved on the dial 41 through marking lines, thereby controlling the angle between adjacent destruction locations on the bearing inner ring 60. The specific principle will be explained in the usage method section below.

[0087] Optionally, the marking component 40 also includes a limiting member 44, with the marking pen 43 positioned between the limiting member 44 on the first side of the dial 41 and the limiting member 44 on the second side of the dial 41. The area defined by the limiting member 44 on the first side of the dial 41 and the limiting member 44 on the second side of the dial 41, i.e., the maximum interval angle between adjacent damage positions on the inner ring 60 of the bearing, facilitates marking by the marking pen 43. The specific principle will be explained in the usage method later. It should be noted that the marking pen 43 can achieve the maximum interval angle between adjacent damage positions on the inner ring 60 of the bearing by contacting the limiting members 44 on both sides of the dial 41, or the marking pen 43 can align with the scale on the dial 41 to make the interval angle between adjacent damage positions on the inner ring 60 of the bearing smaller than the maximum interval angle, which will not be detailed here.

[0088] Optionally, the limiting member 44 is a fixing bolt, through which the dial 41 passes and is threaded to the clamping mechanism 10. The dial 41 is fixed between the clamping mechanism 10 and the bolt head of the limiting member 44. The marking pen 43 is positioned between the bolt head of the limiting member 44 on the first side of the dial 41 and the bolt head of the limiting member 44 on the second side of the dial 41. In this way, the limiting member 44 can be used for both disassembly and fixation of the dial 41, and can also limit the maximum interval angle between adjacent damage positions on the inner ring 60 of the bearing, thereby realizing the reuse of the limiting member 44.

[0089] Optionally, the marking assembly 40 also includes a pressure plate 45, which is connected to a movable pen holder 42. The marking pen 43 passes through the space enclosed by the pressure plate 45 and the movable pen holder 42. The pressure plate 45 can press and fix the marking pen 43 to the movable pen holder 42, and can also release the marking pen 43 so that the marking pen 43 can move, making it convenient to use the marking assembly 40.

[0090] Optionally, the dial 41 and the destructive loading mechanism 30 are offset from each other to prevent them from interfering with each other when in use.

[0091] Optionally, the driving component 32 can be any mechanism capable of driving the loading head 33 to move, such as a push rod mechanism. In this application, the driving component 32 is set as a driving screw, which is screw-driven and cooperates with the cover 31, and is rotatably connected to the sliding seat 34. The pre-set destruction device also includes a load calibration assembly 50, which includes a loading block 51, a pressure sensor 52, a controller 53, and an industrial computer 54. The pressure sensor 52, the controller 53, and the industrial computer 54 are electrically connected in sequence, and the loading block 51 is located on the pressure sensor 52.

[0092] In use, the base frame assembly 20 first controls the loading mechanism 30 to move to the calibration station so that the loading head 33 corresponds to the loading block 51; then, the digital torque wrench applies torque to the drive component 32 so that the drive component 32 can drive the loading head 33 to apply load to the loading block 51; the pressure sensor 52 can respond to the load applied to the loading block 51 to generate a load signal; the industrial control computer 54 can respond to the load signal transmitted by the controller 53 to record the load value applied to the loading block 51; when the load value recorded by the industrial control computer 54 meets the requirements for destroying the inner ring 60 of the bearing, the torque value displayed by the digital torque wrench at this time is recorded, thus completing the calibration.

[0093] Subsequently, the base frame assembly 20 controls the destructive loading mechanism 30 to transfer to the loading station so that the loading head 33 corresponds to the bearing inner ring 60. Then, the digital torque wrench transmits torque to the drive component 32 according to the calibrated torque value, thereby controlling the load loaded on the bearing inner ring 60 and improving the load control accuracy of this application.

[0094] In some alternative implementations, two sets of jaws 13 can also be provided simultaneously to clamp two bearing inner rings 60 of different specifications, for example... Figure 5 As shown, the two sets of jaws 13 are jaw #1 and jaw #2, and the two bearing inner rings 60 are bearing inner ring #1 and bearing inner ring #2, respectively. The inner diameter of bearing inner ring #1 is in the range of φ120mm to φ260mm, and the inner diameter of bearing inner ring #2 is in the range of φ260mm to φ450mm. More preferably, the inner diameter of bearing inner ring #1 is in the range of φ120mm to φ200mm, and the inner diameter of bearing inner ring #2 is in the range of φ300mm to φ450mm, to prevent mutual interference.

[0095] In use, claw #1 and claw #2 are simultaneously provided on the claw base 12. Claw #1 and claw #2 are arranged sequentially along the extension direction of claw base 12. One of claw #1 and claw #2 can be fixed to claw base 12, and the other can be slidably connected to claw base 12. A screw adjustment component can be provided between claw #1 and claw #2. For example, claw #1 is fixed to claw base 12, and claw #2 is slidably connected to claw base 12.

[0096] First, the #2 chuck is brought closer to the #1 chuck by adjusting the screw. Then, the #1 bearing inner ring is installed on the clamping mechanism 10. The chuck drive mechanism drives the #1 chuck to clamp and fix the #1 bearing inner ring. Then, the #2 bearing inner ring is installed on the clamping mechanism 10 so that the #1 bearing inner ring is located in the #2 bearing inner ring. Then, the #2 chuck is moved away from the #1 chuck by adjusting the screw until the #2 chuck clamps the #2 bearing inner ring, thus completing the fixing of the #2 bearing inner ring.

[0097] Install a dial indicator or micrometer on the rocker arm 29 as a measuring tool, and make the indicator head contact the inner ring of bearing #2; keep the base frame assembly 20 and the first mounting ring 14 in contact, and control the base frame assembly 20 to rotate around the clamping mechanism 10 one revolution to observe the change of the measuring tool reading. When the change of the measuring tool reading is within the preset range, it is considered that the inner rings of bearing #1 and bearing #2 are concentric, and the subsequent process is carried out. If the change of the measuring tool reading is greater than the preset range, the position of the #2 chuck is adjusted by the screw adjustment component, and then the position of the inner ring of bearing #2 is adjusted until the inner ring of bearing #2 is concentric with the inner ring of bearing #1.

[0098] Then, the position and attitude of the destructive loading mechanism 30 are adjusted by the base frame assembly 20 to conduct pre-destructive loading tests on the inner rings of bearings #2 and #1, respectively.

[0099] This application also discloses a bearing failure method applied to the aforementioned bearing pre-failure device. The bearing failure method includes:

[0100] Step S100: Disassemble the bearing and remove the inner ring 60 for later use;

[0101] Step S200: Fix the clamping mechanism 10 to the platform, and clamp the bearing inner ring 60 onto the clamping mechanism 10; wherein, depending on the inner diameter of the bearing inner ring 60, a chuck adapter seat is selected for installation, so that the chuck 13 is in different positions on the chuck seat 12. Specifically, for bearing inner rings 60 with inner diameters of φ120mm-φ260mm, the following is used: Figure 1 As shown, the inner ring 60 of the bearing with an inner diameter of φ260mm-φ450mm is as follows. Figure 2 As shown, the bearing inner ring 60 is clamped with reference to the inner bore surface.

[0102] Step S300: Perform the loading head 33 adjustment process, including: adjusting the loading head 33 to the corresponding bearing inner ring 60; specifically, including:

[0103] By rotating the adjusting screw 23, the lifting frame 22 is moved away from or closer to the fixed frame 21, thereby making the height position of the loading head 33 correspond to the inner ring 60 of the bearing;

[0104] By moving the support arm 24, the radial position of the loading head 33 is made to correspond to the inner ring 60 of the bearing;

[0105] By rotating the rocker arm 29, the direction of load application on the inner ring 60 of the bearing can be adjusted;

[0106] By controlling the base frame assembly 20 to move along the circumference of the clamping mechanism 10, the position of the loading head 33 is adjusted, thereby making the positions of the dial 41 and the loading head 33 offset from each other, so as to prevent the positions of the marking assembly 40 and the destructive loading mechanism 30 from interfering with each other when performing the preset destruction process and calibration process described later.

[0107] Step S400: Perform the marking process, such as... Figure 6 As shown, it includes:

[0108] Move the marker pen 43 along with the movable pen holder 42 to the first side of the dial 41;

[0109] Loosen the pressure plate 45 to release the marker pen 43;

[0110] Move the marker pen 43 to mark the inner ring 60 of the bearing to form the marking position P; Figure 1 The marking P is located on the outer ring surface of the inner ring 60 of the bearing. Figure 2 The marking P is located on the inner ring surface of the bearing inner ring 60;

[0111] Move the marker pen 43 away from the inner ring 60 of the bearing;

[0112] Press the pressure plate 45 to fix the marking pen 43.

[0113] Step S500: Perform the pre-set destruction process, such as...Figure 7 As shown, it includes: controlling the drive unit 32 to drive the loading head 33 to apply a load to the bearing inner ring 60 until the bearing inner ring 60 is pre-damaged, forming the damage position Q.

[0114] Step S600: Perform the indexing operation, such as... Figure 8 As shown, it includes:

[0115] Move the marker pen 43 along with the movable pen holder 42 to the second side of the dial 41;

[0116] The clamping mechanism 10 releases the inner ring 60 of the bearing;

[0117] Rotate the inner ring 60 of the bearing so that the mark position P on the inner ring 60 corresponding to the first side of the dial 41 is moved to the second side of the dial 41 to correspond to the mark pen 43.

[0118] The clamping mechanism 10 controls the fixing of the bearing inner ring 60;

[0119] Steps S400 to S600 are executed repeatedly, as follows: Figures 9-11 As shown, the bearing continues to rotate until the inner ring 60 completes one revolution, thus completing the pre-set failure at each indexing position. Among these, Figure 9 This is a schematic diagram of the repeating marking process of the present invention; Figure 10 This is a schematic diagram of the repeated pre-set destruction process of the present invention; Figure 11 This is a schematic diagram of the repeatable indexing process of the present invention. By setting the marking component 40, the indexing of more than 60 failure positions Q of the bearing inner ring can be realized, so that the failure positions Q are evenly distributed.

[0120] Optionally, the pre-destruction process in step S500 typically uses a torque wrench to control the torque applied to the drive component 32, thereby controlling the load applied to the bearing inner ring 60. If further control of the load magnitude is desired, the load can be pre-calibrated, as follows:

[0121] Before the loading head 33 adjustment process in step S300, the bearing failure method further includes performing a calibration process, which includes:

[0122] In the industrial control computer 54, a load threshold is preset. The load threshold is the load value that will cause the inner ring 60 of the bearing to fail.

[0123] Adjust the loading head 33 to the calibration position so that the loading head 33 corresponds to the loading block 51;

[0124] The drive component 32 is rotated by a digital torque wrench to drive the loading head 33 to apply a load to the loading block 51;

[0125] Pressure sensor 52 responds to the load applied to loading block 51 to generate a load signal;

[0126] The industrial computer 54 responds to the load signal transmitted by the controller 53 to record the load value applied to the loading block 51;

[0127] When the load value recorded by the industrial control computer 54 reaches the load threshold, the drive component 32 is stopped from rotating, and the torque value applied to the load threshold is recorded, which is the reading displayed on the digital torque wrench.

[0128] The pre-set destruction process in step S500 includes: applying a torque value corresponding to the load threshold to the drive component 32 with a digital torque wrench, thereby driving the loading head 33 to apply a load of the load threshold to the bearing inner ring 60, thereby destroying the bearing inner ring 60.

[0129] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any variations and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the invention, fall within the protection scope defined by the claims of the present invention.

Claims

1. A bearing pre-destruction device, characterized in that, include: Clamping mechanism (10); The base frame assembly (20) is located on one side of the clamping mechanism (10); The destructive loading mechanism (30) includes a housing (31) disposed on the base frame assembly (20), a loading head assembly slidably disposed on the housing (31), and a drive member (32) connected to the loading head assembly; The drive member (32) can drive the loading head assembly to move so that the loading head (33) on the loading head assembly applies a load to the bearing inner ring (60) fixed on the clamping mechanism (10).

2. The pre-set destruction device according to claim 1, characterized in that, The base frame assembly (20) includes: A fixing frame (21) is provided on one side of the clamping mechanism (10); The lifting frame (22) is movably mounted on the fixed frame (21); Adjusting screw (23), the first end of which is rotatably disposed on the fixed frame (21) and screw-driven into the threaded hole on the lifting frame (22); A support arm (24) is provided on the lifting frame (22) and connected to the cover (31); The adjusting screw (23) can be rotated to move the lifting frame (22) away from or closer to the fixed frame (21).

3. The pre-set destruction device according to claim 2, characterized in that, The support arm (24) is slidably disposed on the lifting frame (22), and the sliding direction of the support arm (24) is different from the lifting direction of the lifting frame (22).

4. The pre-set destruction device according to claim 3, characterized in that, The base frame assembly (20) also includes a rocker arm (29) rotatably connected to the support arm (24), and the cover (31) is connected to the support arm (24) via the rocker arm (29).

5. The pre-set destruction device according to claim 2, characterized in that, The clamping mechanism (10) has a first mounting ring (14) around its periphery. The side of the fixed frame (21) facing the first mounting ring (14) is a first arc surface. The fixed frame (21) slides with the first mounting ring (14) through the first arc surface and the side of the ring, so that the base frame assembly (20) can move along the circumference of the clamping mechanism (10).

6. The pre-set destruction device according to claim 1, characterized in that, Also includes: A dial (41) is mounted on the clamping mechanism (10); The movable pen holder (42) is provided on the clamping mechanism (10) and can move along the circumference of the clamping mechanism (10); A marker pen (43) is movably disposed on the movable pen holder (42) for use away from or near the inner ring (60) of the bearing. The dial (41) and the marker pen (43) are arranged sequentially in a direction away from the clamping mechanism (10).

7. The pre-set destruction device according to claim 6, characterized in that, It also includes a limiting member (44), wherein the marking pen (43) is limited between the limiting member (44) provided on the first side of the dial (41) and the limiting member (44) provided on the second side of the dial (41).

8. The pre-set destruction device according to claim 7, characterized in that, The limiting member (44) is a fixing bolt. The limiting member (44) passes through the scale (41) and is threadedly connected to the clamping mechanism (10). The scale (41) is fixed between the clamping mechanism (10) and the bolt head of the limiting member (44). The marking pen (43) is positioned between the bolt head of the limiting member (44) provided on the first side of the dial (41) and the bolt head of the limiting member (44) provided on the second side of the dial (41).

9. The pre-set destruction device according to claim 8, characterized in that, It also includes a pressure plate (45) that connects to the movable pen holder (42), and the marking pen (43) passes through the space enclosed by the pressure plate (45) and the movable pen holder (42). The pressure plate (45) can press and fix the marking pen (43) to the movable pen holder (42), and can release the marking pen (43).

10. The pre-set destruction device according to claim 6, characterized in that, The dial (41) and the destructive loading mechanism (30) are located at opposite positions.

11. The pre-set destruction device according to claim 1, characterized in that, The loading head assembly includes a sliding seat (34) and a loading head (33) arranged sequentially. The sliding seat (34) is slidably disposed in the cover (31). The driving member (32) is connected to the sliding seat (34). The driving member (32) is a driving screw. The driving member (32) is screw-driven and engages with the cover (31), and is rotatably connected to the sliding seat (34). The pre-set destruction device further includes a loading block (51), a pressure sensor (52), a controller (53), and an industrial computer (54). The pressure sensor (52), controller (53), and industrial computer (54) are electrically connected in sequence. The loading block (51) is located on the pressure sensor (52). The drive unit (32) can drive the loading head (33) to apply a load to the loading block (51); The pressure sensor (52) is able to generate a load signal in response to the load applied to the loading block (51); The industrial computer (54) is able to respond to the load signal transmitted by the controller (53) to record the load value applied to the loading block (51).

12. A method for destroying a bearing, characterized in that, The method applied to the bearing pre-destruction device of claim 1 includes: Fix the clamping mechanism (10) to the platform and clamp the inner ring (60) of the bearing onto the clamping mechanism (10); The loading head (33) adjustment process includes: adjusting the loading head (33) to correspond to the inner ring (60) of the bearing; Performing a pre-set destruction process includes: controlling the drive unit (32) to drive the loading head (33) to apply a load to the bearing inner ring (60) until the bearing inner ring (60) is pre-set to be destroyed.

13. The bearing failure method according to claim 12, characterized in that, The pre-set destruction device also includes: A dial (41) is mounted on the clamping mechanism (10); The movable pen holder (42) is disposed on the clamping mechanism (10) and can move along the circumference of the clamping mechanism (10); The marking pen (43) is movably disposed on the movable pen holder (42), and the dial (41) and the marking pen (43) are arranged sequentially in a direction away from the clamping mechanism (10); The marking pen (43) is used to move away from or near the inner ring (60) of the bearing; The marking pen (43) is positioned between the limiting member (44) provided on the first side of the dial (41) and the limiting member (44) provided on the second side of the dial (41). Prior to the pre-set failure step, the bearing failure method further includes: The marking process includes: Move the marking pen (43) along with the movable pen holder (42) to the first side of the dial (41); Move the marking pen (43) to mark the inner ring (60) of the bearing; Move the marker pen (43) away from the inner ring of the bearing (60); Following the pre-setting failure step, the bearing failure method further includes performing an indexing step, which includes: Move the marking pen (43) along with the movable pen holder (42) to the second side of the dial (41); Control the clamping mechanism (10) to release the bearing inner ring (60); Rotate the inner ring (60) of the bearing so that the marking position on the inner ring (60) corresponding to the first side of the dial (41) is moved to the second side of the dial (41) to correspond to the marking pen (43); The clamping mechanism (10) is controlled to fix the inner ring (60) of the bearing; Return to the marking process until the inner ring (60) of the bearing rotates one revolution to complete the preset destruction of each indexing position.

14. The bearing failure method according to claim 12, characterized in that, The driving component (32) is a driving screw, which is screw-driven and fits into the cover (31), and is rotatably connected to the sliding seat (34); The pre-set destruction device also includes a loading block (51), a pressure sensor (52), a controller (53), and an industrial computer (54) in sequence. The pressure sensor (52), the controller (53), and the industrial computer (54) are electrically connected in sequence. The loading block (51) is located on the pressure sensor (52). Prior to the loading head (33) adjustment process, the bearing failure method further includes performing a calibration process, which includes: A load threshold is preset in the industrial control computer (54); Adjust the loading head (33) to correspond to the loading block (51); Rotate the drive member (32) to drive the loading head (33) to apply a load to the loading block (51); The pressure sensor (52) responds to the load applied to the loading block (51) to generate a load signal; The industrial computer (54) responds to the load signal transmitted by the controller (53) to record the load value applied to the loading block (51); When the load value recorded by the industrial control computer (54) reaches the load threshold, the rotation of the drive component (32) is stopped, and the torque value applied corresponding to the load threshold is recorded; The execution of the pre-set destruction process includes: applying a torque value corresponding to the load threshold to the drive member (32), and driving the loading head (33) to load the bearing inner ring (60) with a load of the load threshold.

15. The bearing failure method according to claim 12, characterized in that, The base frame assembly (20) includes: A fixing frame (21) is provided on one side of the clamping mechanism (10); The lifting frame (22) is movably mounted on the fixed frame (21); Adjusting screw (23), the first end of which is rotatably disposed on the fixed frame (21) and screw-driven into the threaded hole on the lifting frame (22); A support arm (24) is slidably disposed on the lifting frame (22), and the sliding direction of the support arm (24) is different from the lifting direction of the lifting frame (22); A rocker arm (29) is rotatably connected to the support arm (24), and the cover (31) is connected to the support arm (24) via the rocker arm (29); The process of adjusting the loading head (33) includes: The loading head (33) is adjusted to correspond to the inner ring (60) of the bearing by at least one of the following operations: rotating the adjusting screw (23), moving the support arm (24), and rotating the rocker arm (29).

16. The bearing failure method according to claim 15, characterized in that, The clamping mechanism (10) has a first mounting ring (14) around its periphery, and the side of the fixing frame (21) facing the first mounting ring (14) is a first arc surface, which slides in contact with the side of the first mounting ring (14). The process of adjusting the loading head (33) further includes: The control base frame assembly (20) moves circumferentially along the clamping mechanism (10) to adjust the position of the loading head (33).

Images