A precision eccentricity adjustment device for centerless grinding of bearing rings

Abstract

This application relates to the field of bearing machining, and in particular to a precision eccentricity adjustment device for centerless grinding of bearing rings. It includes a lower jaw disc, a sleeve, an eccentric wheel, an upper jaw disc, and a rotating column. The lower jaw disc has a coaxial through-hole. The sleeve includes an upper cylinder, a connecting ring, and a lower cylinder. The inner diameter of the upper cylinder is larger than the outer diameter of the lower cylinder. The inner wall of the connecting ring is coaxially and fixedly connected to the outer wall of the lower cylinder, and the outer wall of the connecting ring is coaxially and fixedly connected to the inner wall of the upper cylinder. The lower cylinder is coaxially and rotatably connected to the inner wall of the through-hole. The eccentric wheel is coaxially embedded in the upper cylinder and has a waist-shaped opening. The length direction of the waist-shaped opening is along the radial direction of the eccentric wheel. The upper jaw disc is located on the side of the upper cylinder away from the lower jaw disc. The rotating column is coaxially and fixedly connected to the upper jaw disc and slidably connected to the inner wall of the waist-shaped opening. The upper jaw disc is used to fix the bearing ring, and the lower jaw disc is used to fix the disk. The distance the rotating column moves is the eccentricity value, which brings the bearing ring into contact with the disk, facilitating pre-adjustment of the eccentricity value and improving the machining efficiency of the bearing ring.

Description

Technical Field

[0001] This application relates to the field of bearing processing, and in particular to a precision eccentricity adjustment device for centerless grinding of bearing rings. Background Technology

[0002] In the grinding process of disc-shaped parts, especially the inner and outer rings of rolling bearings, electromagnetic centerless chucks are commonly used to clamp the workpieces. These chucks are suitable for batch processing. The working principle of an electromagnetic centerless chuck is as follows: one end face of the workpiece rests against the end face of a magnetic pole under the action of magnetic force, while the outer circle of the workpiece rests against the rear and lower supports due to the eccentricity between the workpiece and the magnetic pole. During grinding, the magnetic force keeps the end face of the workpiece pressed against the end face of the magnetic pole, causing the workpiece to rotate together with the magnetic pole. The eccentricity between the workpiece and the magnetic pole keeps the outer circle of the workpiece pressed against the support surfaces of the two supports. The magnitude and direction of the eccentricity between the workpiece and the magnetic pole are two important indicators for using this chuck and have a significant impact on the machining quality.

[0003] In the bearing manufacturing process, traditional electromagnetic centerless clamping for eccentricity adjustment has lacked a direct method for adjusting the eccentricity and eccentricity angle. It primarily relies on worker experience, manually adjusting the eccentricity and eccentricity angle of the bearing rings. This adjustment process often requires several repetitions to achieve the required grinding precision. Because precise eccentricity and eccentricity angle are not determined in each adjustment, the success rate and efficiency are low, significantly impacting the processing efficiency and accuracy of the bearing rings. Summary of the Invention

[0004] To improve the machining efficiency of bearing rings, this application provides a precision eccentricity adjustment device for centerless grinding of bearing rings.

[0005] The precision eccentricity adjustment device for centerless grinding of bearing rings provided in this application adopts the following technical solution:

[0006] A precision eccentric adjustment device for centerless grinding of bearing rings includes a lower jaw plate, a sleeve, an eccentric wheel, an upper jaw plate, and a rotating column. The lower jaw plate is coaxially provided with a through-hole. The sleeve includes an upper cylinder, a connecting ring, and a lower cylinder. The inner diameter of the upper cylinder is larger than the outer diameter of the lower cylinder. The inner wall of the connecting ring is coaxially fixedly connected to the outer wall of the lower cylinder, and the outer wall of the connecting ring is coaxially fixedly connected to the inner wall of the upper cylinder. The lower cylinder is coaxially rotatably connected to the inner wall of the through-hole. The eccentric wheel is coaxially embedded in the upper cylinder and has a waist-shaped opening. The length direction of the waist-shaped opening is along the radial direction of the eccentric wheel. The upper jaw plate is located on the side of the upper cylinder away from the lower jaw plate. The rotating column is coaxially fixedly connected to the upper jaw plate and slidably connected to the inner wall of the waist-shaped opening. The upper jaw plate is used to fix the bearing ring, and the lower jaw plate is used to fix the bearing disc.

[0007] By adopting the above technical solution, the upper jaw plate fixes the bearing ring, and the upper jaw plate is coaxial with the bearing ring. The rotating column is coaxial with the upper jaw plate and slides in the waist-shaped opening, making the upper jaw plate and the lower jaw plate eccentric. The distance the rotating column moves is the eccentricity value, which brings the bearing ring into contact with the disk. The lower jaw plate fixes the disk, and the lower jaw plate is coaxial with the disk. The eccentricity value between the upper jaw plate and the lower jaw plate is the eccentricity value between the bearing ring and the disk, which is convenient for pre-adjusting the eccentricity value. After the rear support and the lower support abut against the bearing ring, the upper jaw plate and the lower jaw plate are disassembled, which improves the processing efficiency of the bearing ring.

[0008] Preferably, it also includes a lead screw, both ends of the eccentric wheel are provided with connection ports, the axial direction of the connection port is parallel to the length direction of the waist-shaped opening, the connection port is connected to the waist-shaped opening, both ends of the upper cylinder are provided with through holes, the through holes are connected to the connection ports, the lead screw passes through the through holes and is threaded to the inner wall of the connection port, and the lead screw is used to abut against the outer wall of the rotating column.

[0009] By adopting the above technical solution, the lead screw rotates to drive the rotating column to move, which makes it easy to adjust the eccentricity value according to the processing needs, thereby improving the processing efficiency and accuracy of the bearing rings.

[0010] Preferably, it further includes a warning component, which includes an abutment block, a linkage block, and a warning block. The rotating column has an abutment groove on its outer wall facing the lead screw, the rotating column has a linkage port, and the outer wall of the rotating column has a warning groove. One end of the linkage port is connected to the abutment groove, and the other end of the linkage port is connected to the warning groove. The abutment block is slidably embedded in the abutment groove, the linkage block is slidably connected to the inner wall of the linkage port, and the warning block is slidably embedded in the warning groove. The abutment block has an abutment surface at one end facing the linkage block, and the warning block has a warning surface at one end facing the linkage block. One end of the linkage block abuts against the abutment surface, and the other end of the linkage block abuts against the warning surface.

[0011] By adopting the above technical solution, when the lead screw abuts the abutting block, the lead screw pushes the abutting block to move, and the linkage block moves synchronously to push the warning block to move, reminding the operator that the abutting has been completed. If the lead screw does not abut the abutting block, the eccentricity value of the bearing ring will be incorrect. The warning block reduces the probability of error and improves the processing efficiency and processing quality of the bearing ring.

[0012] Preferably, the warning assembly further includes a mounting plate and a first spring. The wall of the warning groove is provided with a mounting groove. The mounting plate is fixedly connected to one end of the warning block facing the mounting groove. One end of the first spring is fixedly connected to the mounting plate, and the other end of the first spring is fixedly connected to the wall of the mounting groove.

[0013] By adopting the above technical solution, when the lead screw does not press tightly against the abutment block, the first spring drives the warning block to automatically reset through the mounting plate, which is convenient for the next use and improves the utilization rate of the device.

[0014] Preferably, it also includes a pointer plate, which is fixedly connected to the end of the lead screw away from the rotating column. The end of the lower claw plate facing the upper claw plate is provided with a scale, and the pointer plate abuts against the end face of the lower claw plate for reading.

[0015] By adopting the above technical solution, the guide plate moves synchronously while the lead screw moves. The guide plate makes it easy for the operator to read the value and adjust the eccentricity, thereby improving the processing efficiency of the bearing rings.

[0016] Preferably, it also includes a sliding post, wherein the end of the connecting ring facing the lower claw disk is provided with a first positioning groove, the end of the lower claw disk facing the upper claw disk is provided with a sliding groove, the sliding post is slidably connected to the groove wall of the sliding groove, and the sliding post is used to be embedded in the first positioning groove.

[0017] By adopting the above technical solution, when installing the sleeve, the sliding column slides into the first positioning groove to complete the positioning, so that the opening of the sleeve is aligned with the scale, which facilitates subsequent readings and improves the processing efficiency and accuracy of the bearing ring. When adjusting the eccentricity angle later, the sliding column slides out of the first positioning groove, which facilitates the rotation of the sleeve to adjust the eccentricity angle.

[0018] Preferably, it also includes a nut, which is located on the side of the lower jaw plate away from the upper jaw plate. The outer wall of the rotating column is provided with external threads. The nut is sleeved on the outer circumference of the rotating column and is threadedly connected to the outer wall of the rotating column. The outer diameter of the nut is larger than the diameter of the opening.

[0019] By adopting the above technical solution, the rotation of the nut locks the lower jaw plate and the upper jaw plate together, making it easier to move the entire device close to the disk. During the movement, the adjusted eccentric value is not easily changed, thus providing good machining accuracy for the bearing rings.

[0020] Preferably, it further includes a retaining ring, a connecting post, and a connecting block. The retaining ring is coaxially fixedly connected to the end of the nut facing the lower jaw disc. The end of the retaining ring opposite to the nut is coaxially provided with a retaining groove. The bottom of the retaining groove is provided with an annular groove. The width of the annular groove is greater than the width of the retaining groove. The end of the lower jaw disc facing the nut is provided with a connecting groove. The connecting groove communicates with the sliding groove. The connecting post is fixedly connected to the end of the sliding post opposite to the upper jaw disc. The connecting block is fixedly connected to the end of the connecting post opposite to the sliding post. The connecting post moves within the retaining groove. The length of the connecting block is greater than the width of the retaining groove.

[0021] By adopting the above technical solution, the connecting block cannot disengage from the slot. As the nut rotates away from the lower claw plate, it will drive the sliding column to slide down, thereby unlocking the sleeve from the lower claw plate. This makes it easier to rotate the sleeve to adjust the eccentricity angle. The connecting column moves within the slot, allowing the rotating column to have a certain amount of movement space after adjusting the eccentricity value. It is not easy to interfere with subsequent adjustments of the eccentricity angle. The structure is simple and the operation is convenient.

[0022] Preferably, it also includes a second spring, and an abutment ring is coaxially fixedly connected to the outer wall of the sliding column. One end of the second spring is fixedly connected to the bottom of the sliding groove, and the other end of the second spring is fixedly connected to the abutment ring.

[0023] By adopting the above technical solution, the second spring pushes the sliding column to move, and the sliding column extends out of the sliding groove, which makes it easier for the sliding column to be embedded in the first positioning groove, thereby improving the installation efficiency of the sleeve and aligning the opening of the sleeve with the scale, thus improving the efficiency of measuring the eccentricity value.

[0024] Preferably, the upper cylinder has a second positioning groove at the end opposite to the lower claw disk, and a limit strip is connected to the end of the upper claw disk facing the lower claw disk. The second positioning groove is used for the limit strip to be embedded.

[0025] By adopting the above technical solution, it is easy to limit the upper jaw plate and the sleeve, so that the rotating column rotates while driving the sleeve to rotate synchronously, which makes it easy to adjust the eccentric angle.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The upper jaw plate fixes the bearing ring and is coaxial with the bearing ring. The rotating column is coaxial with the upper jaw plate and slides in the waist-shaped opening, making the upper jaw plate and the lower jaw plate eccentric. The distance the rotating column moves is the eccentricity value, which brings the bearing ring into contact with the disk. The lower jaw plate fixes the disk and is coaxial with the disk. The eccentricity value between the upper jaw plate and the lower jaw plate is the eccentricity value between the bearing ring and the disk, which is convenient for pre-adjusting the eccentricity value. After the rear support and the lower support are against the bearing ring, the upper jaw plate and the lower jaw plate are disassembled to improve the processing efficiency of the bearing ring.

[0028] 2. When the lead screw abuts against the abutting block, the lead screw pushes the abutting block to move, and the linkage block moves synchronously to push the warning block to move, reminding the operator that the abutting has been completed. If the lead screw does not abut against the abutting block, the eccentricity value of the bearing ring will be incorrect. The warning block reduces the probability of error and improves the processing efficiency and processing quality of the bearing ring.

[0029] 3. The connecting block cannot disengage from the slot. As the nut rotates away from the lower claw plate, it will drive the sliding column to slide down, thereby unlocking the sleeve from the lower claw plate. This makes it easier to rotate the sleeve to adjust the eccentricity angle. The connecting column moves within the slot, allowing the rotating column to have a certain amount of movement space after adjusting the eccentricity value. It is not easy to interfere with subsequent adjustments of the eccentricity angle. The structure is simple and the operation is convenient. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a precision eccentric adjustment device for centerless grinding of bearing rings.

[0031] Figure 2This is a cross-sectional view of a precision eccentric adjustment device for centerless grinding of bearing rings.

[0032] Figure 3 It is a schematic diagram of the overall structure of the upper plate base, upper plate, upper jaw, upper sliding pin, upper pull post, upper locking block, upper nut, lower plate base, lower plate, lower jaw, lower sliding pin, lower pull post, lower locking block and lower nut.

[0033] Figure 4 This is a schematic diagram of the overall structure of the sleeve.

[0034] Figure 5 yes Figure 2 Enlarged view of point A in the middle.

[0035] Figure 6 This is a schematic diagram of the overall structure of a precision eccentric adjustment device for centerless grinding of bearing rings, mainly used to demonstrate the adjustment rod.

[0036] Explanation of reference numerals in the attached diagram: 1. Upper jaw plate; 11. Upper plate base; 111. Upper rotating groove; 112. Upper notch; 113. Limiting strip; 12. Upper plate; 121. Upper slide rail; 13. Upper plate cover; 131. Upper sliding groove; 14. Upper jaw; 15. Upper sliding pin; 16. Upper pull post; 17. Upper locking block; 171. Upper locking groove; 172. Upper locking opening; 18. Upper nut; 2. Lower jaw plate; 21. Lower plate base; 21 1. Lower rotary groove; 212. Through opening; 213. Lower notch; 214. Sliding groove; 215. Connecting groove; 22. Lower disc; 221. Lower slide rail; 23. Lower disc cover; 231. Lower slide groove; 24. Lower gripper; 25. Lower slide pin; 26. Lower pull post; 27. Lower locking block; 271. Lower locking groove; 272. Lower locking opening; 28. Lower nut; 3. Sleeve; 31. Upper sleeve; 311. Through opening; 312. Second positioning groove; 32, connecting ring; 321, first positioning groove; 322, protruding strip; 33, lower cylinder; 4, limiting assembly; 41, sliding column; 411, abutting ring; 42, second spring; 43, connecting column; 44, connecting block; 5, adjusting assembly; 51, eccentric wheel; 511, third positioning groove; 512, waist-shaped opening; 513, connecting opening; 52, rotating column; 521, abutting groove; 522, connecting... 523. Moving port; 524. Warning groove; 525. Retaining ring; 526. Mounting groove; 527. Limiting port; 53. Lead screw; 54. Pointing plate; 6. Warning assembly; 61. Abutting block; 611. Stopping block; 612. Abutting surface; 62. Linkage block; 63. Warning block; 631. Warning surface; 64. Mounting plate; 65. First spring; 7. Nut; 8. Snap ring; 81. Snap groove; 82. Ring groove; 9. Adjusting rod. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0038] This application discloses a precision eccentricity adjustment device for centerless grinding of bearing rings. (Refer to...) Figure 1 and Figure 2 A precision eccentric adjustment device for centerless grinding of bearing rings includes an upper jaw plate 1, a lower jaw plate 2, a sleeve 3, a limiting component 4, an adjusting component 5, a warning component 6, a nut 7, a retaining ring 8, and an adjusting rod 9.

[0039] Reference Figure 1 and Figure 3 The upper jaw plate 1 includes an upper plate base 11, an upper plate 12, an upper plate cover 13, an upper jaw 14, an upper sliding pin 15, an upper pull post 16, an upper locking block 17, and an upper nut 18. An upper rotating groove 111 is coaxially provided on one side of the upper plate base 11. The upper plate 12 is rotatably embedded in the upper rotating groove 111. An upper slide rail 121 is provided at one end of the upper plate 12 away from the bottom of the upper rotating groove 111. The upper slide rail 121 is curved outward from the center of the upper plate 12. There are three upper slide rails 121, which are evenly spaced around the axis of the upper plate 12.

[0040] The upper cover 13 is coaxially fixedly connected to the end of the upper plate seat 11 that is away from the bottom of the upper rotating groove 111. The diameter of the upper cover 13 is equal to the diameter of the upper plate seat 11. The outer wall of the upper cover 13 is provided with an upper sliding groove 131. The length direction of the upper sliding groove 131 is along the radial direction of the upper cover 13. There are three upper sliding grooves 131. The three upper sliding grooves 131 are evenly spaced around the axis of the upper cover 13. The upper clamping claw 14 is slidably embedded in the upper sliding groove 131. The upper sliding nail 15 is fixedly connected to the end of the upper clamping claw 14 facing the upper plate seat 11. The upper sliding nail 15 is slidably embedded in the upper slide rail 121.

[0041] Reference Figure 1 and Figure 3 The outer wall of the upper plate seat 11 is provided with an upper notch 112, which connects to the upper rotating groove 111. The upper pull column 16 is fixedly connected to the outer wall of the upper plate 12. One end of the upper locking block 17 is provided with an upper locking groove 171. The upper plate seat 11 and the upper plate cover 13 are both embedded in the upper locking groove 171. The bottom of the upper locking groove 171 is provided with an upper locking opening 172. The upper pull column 16 passes through the upper locking opening 172. The upper nut 18 is provided on the side of the upper locking block 17 away from the axis of the upper plate seat 11. The upper nut 18 is threadedly connected to the outer wall of the upper pull column 16. The upper claw plate 1 is used to fix the bearing ring, and the upper claw plate 1 is coaxial with the bearing ring.

[0042] Reference Figure 1 and Figure 3The lower jaw plate 2 includes a lower plate base 21, a lower plate 22, a lower plate cover 23, a lower jaw 24, a sliding pin 25, a lower pull post 26, a lower locking block 27, and a lower nut 28. A lower rotating groove 211 is coaxially provided on one side of the lower plate base 21, and the lower plate cover 23 is coaxially fixedly connected to the end of the lower plate base 21 opposite to the bottom of the lower rotating groove 211. The diameter of the lower plate cover 23 is equal to the diameter of the lower plate base 21.

[0043] Reference Figure 2 and Figure 3 The lower plate base 21 is coaxially provided with a through opening 212, which passes through the lower plate cover 23 and the lower plate base 21. The lower rotating groove 211 is provided on the outer periphery of the through opening 212. The lower plate 22 is rotatably embedded in the lower rotating groove 211. The lower plate 22 is provided with a sliding track 221 at one end away from the bottom of the lower rotating groove 211. The sliding track 221 is curved outward from the center of the lower plate 22. There are three sliding tracks 221, which are evenly spaced around the axis of the lower plate 22.

[0044] Reference Figure 1 and Figure 3 The outer wall of the lower plate cover 23 is provided with a sliding groove 231. The length direction of the sliding groove 231 is along the radial direction of the lower plate cover 23. There are three sliding grooves 231. The three sliding grooves 231 are evenly spaced around the axis of the lower plate cover 23. The lower clamp 24 is slidably embedded in the sliding groove 231. The sliding pin 25 is fixedly connected to the end of the lower clamp 24 facing the lower plate seat 21. The sliding pin 25 is slidably embedded in the sliding channel 221.

[0045] The outer wall of the lower plate base 21 has a lower notch 213, which connects to the lower rotating groove 211. The pull-down column 26 is fixedly connected to the outer wall of the lower plate 22. One end of the lower locking block 27 has a lower locking groove 271. The lower plate base 21 and the lower plate cover 23 are both embedded in the lower locking groove 271. The bottom of the lower locking groove 271 has a lower locking opening 272. The pull-down column 26 passes through the lower locking opening 272. The lower nut 28 is located on the side of the lower locking block 27 away from the axis of the lower plate base 21. The lower nut 28 is threadedly connected to the outer wall of the pull-down column 26. The lower peripheral plate is used to fix the disk, and the lower claw plate 2 is coaxial with the disk.

[0046] Reference Figure 2 and Figure 4The sleeve 3 includes an upper cylinder 31, a connecting ring 32, and a lower cylinder 33. The inner diameter of the upper cylinder 31 is larger than the outer diameter of the lower cylinder 33. The inner wall of the connecting ring 32 is coaxially and fixedly connected to the outer wall of the lower cylinder 33, and the outer wall of the connecting ring 32 is coaxially and fixedly connected to the inner wall of the upper cylinder 31. The lower cylinder 33 is coaxially and rotatably connected to the inner wall of the through-hole 212. The upper cylinder 31 is located on the side of the lower plate cover 23 away from the lower plate seat 21. The end face of the lower cylinder 33 facing the upper cylinder 31 is flush with the end face of the connecting ring 32 away from the lower plate seat 21. The end face of the upper cylinder 31 facing the lower cylinder 33 is flush with the end face of the connecting ring 32 facing the lower plate seat 21. The connecting ring 32 fits against the end face of the lower plate cover 23 away from the lower plate seat 21.

[0047] Reference Figure 2 and Figure 5 The limiting component 4 includes a sliding post 41 and a second spring 42. A first positioning groove 321 is provided at one end of the connecting ring 32 facing the lower plate cover 23. A sliding groove 214 is provided at one end of the lower plate seat 21 facing the upper claw plate 1. The sliding groove 214 is located between the through-hole 212 and the lower rotating groove 211, and passes through the lower plate cover 23. An abutment ring 411 is coaxially and fixedly connected to the outer wall of the sliding post 41. The outer wall of the abutment ring 411 is slidably connected to the groove wall of the sliding groove 214. The first positioning groove 321 is used for the sliding post 41 to be embedded. The second spring 42 is located on the side of the abutment ring 411 near the bottom of the sliding groove 214. One end of the second spring 42 is fixedly connected to the bottom of the sliding groove 214, and the other end of the second spring 42 is fixedly connected to the abutment ring 411.

[0048] Reference Figure 2 and Figure 5 The adjusting assembly 5 includes an eccentric wheel 51, a rotating column 52, a lead screw 53, and a guide plate 54. The eccentric wheel 51 is coaxially embedded in the upper cylinder 31. The end of the connecting ring 32 facing away from the lower plate seat 21 is provided with a protrusion 322. The end of the eccentric wheel 51 facing the connecting ring 32 is provided with a third positioning groove 511 for the protrusion 322 to be inserted. The eccentric wheel 51 is provided with a waist-shaped opening 512. The length direction of the waist-shaped opening 512 is along the radial direction of the eccentric wheel 51. The upper claw plate 1 is located on the side of the upper cylinder 31 away from the lower plate seat 21. One end of the rotating column 52 is coaxially fixedly connected to the end of the upper plate seat 11 facing away from the upper plate cover 13. The rotating column 52 is slidably connected to the inner wall of the waist-shaped opening 512. When the rotating column 52 slides to the end of the waist-shaped opening 512, the outer wall of the rotating column 52 is in contact with the inner wall of the waist-shaped opening 512. When the rotating column 52 slides to the end of the waist-shaped opening 512 close to the axis of the eccentric wheel 51, the axis of the rotating column 52 is collinear with the axis of the eccentric wheel 51.

[0049] Both ends of the eccentric wheel 51 are provided with connection ports 513. The axis of the connection port 513 is parallel to the length direction of the waist-shaped opening 512. The axis of the connection port 513 passes through the center of the eccentric wheel 51. The connection port 513 is connected to the waist-shaped opening 512. The outer wall of the upper cylinder 31 is provided with two through holes 311. The two through holes 311 are arranged opposite to each other. The through holes 311 and the connection ports 513 are arranged one-to-one. The third positioning groove 511 and the protrusion 322 facilitate the alignment of the through holes 311 and the connection ports 513. There are two lead screws 53. The lead screws 53 are arranged one-to-one with the connection ports 513. After the lead screws 53 pass through the through holes 311, they are threaded to the inner wall of the connection ports 513.

[0050] The pointer plate 54 is fixedly connected to the end of the lead screw 53 away from the rotating column 52. The end of the lower plate cover 23 facing the upper jaw plate 1 is provided with a scale. The pointer plate 54 abuts against the end face of the lower jaw plate 2 for reading. The first positioning groove 321 and the sliding column 41 facilitate the movement of the pointer plate 54 in the correct position, making it easy to read the value.

[0051] Reference Figure 2 and Figure 5 The warning component 6 includes an abutment block 61, a linkage block 62, a warning block 63, a mounting plate 64, and a first spring 65. The outer wall of the rotating column 52 facing a lead screw 53 has an abutment groove 521. A retaining ring 524 is coaxially fixedly connected to the groove opening of the abutment groove 521. The rotating column 52 has a linkage port 522. The axis of the linkage port 522 is parallel to the axis of the rotating column 52. The outer wall of the rotating column 52 has a warning groove 523. The distance from the abutment groove 521 to the upper claw plate 1 is less than the distance from the warning groove 523 to the lower claw plate 2. One end of the linkage port 522 is connected to the abutment groove 521, and the other end of the linkage port 522 is connected to the warning groove 523.

[0052] The upper cylinder 31 is provided with a second positioning groove 312 at the end opposite to the lower claw plate 2. The upper plate seat 11 is connected to a limiting strip 113 at the end facing the sleeve 3. The second positioning groove 312 is used for the limiting strip 113 to be inserted. The second positioning groove 312 and the limiting strip 113 facilitate the alignment of the lead screw 53 with the abutment groove 521.

[0053] A stop block 611 is fixedly connected to the outer wall of the abutment block 61. The stop block 611 is slidably connected to the groove wall of the abutment groove 521. The abutment block 61 is slidably connected to the inner wall of the retaining ring 524. The linkage block 62 is slidably connected to the inner wall of the linkage port 522. The warning block 63 is slidably embedded in the warning groove 523. The abutment block 61 has an abutment surface 612 at one end facing the linkage block 62. The warning block 63 has a warning surface 631 at one end facing the linkage block 62. One end of the linkage block 62 abuts against the abutment surface 612, and the other end of the linkage block 62 abuts against the warning surface 631.

[0054] The warning groove 523 has an installation groove 525 on the groove wall facing the abutment groove 521. The installation plate 64 is fixedly connected to one end of the warning block 63 facing the installation groove 525. One end of the first spring 65 is fixedly connected to one end of the installation groove 525 away from the axis of the rotating column 52, and the other end of the first spring 65 is fixedly connected to the installation plate 64.

[0055] Reference Figure 2 and Figure 5 Nut 7 is sleeved on the outer circumference of rotating column 52. Nut 7 is located between warning groove 523 and lower plate seat 21. The outer wall of rotating column 52 is provided with external thread. Nut 7 is threadedly connected to the outer wall of rotating column 52. The outer diameter of nut 7 is larger than the diameter of through port 212. Snap ring 8 is coaxially fixedly connected to the end of nut 7 facing lower plate seat 21. The inner diameter of snap ring 8 is larger than the inner diameter of nut 7. Snap ring 8 is coaxially provided with snap groove 81 at the end away from nut 7. Snap groove 81 is coaxially provided with an annular groove 82 at the bottom of snap groove 81. The width of annular groove 82 is larger than the width of snap groove 81.

[0056] The limiting component 4 also includes a connecting post 43 and a connecting block 44. The lower plate seat 21 has a connecting groove 215 at the end opposite to the upper claw plate 1. The connecting groove 215 is connected to the sliding groove 214. The diameter of the connecting groove 215 is smaller than the diameter of the sliding groove 214. The connecting post 43 is fixedly connected to the end of the sliding post 41 opposite to the upper claw plate 1. The connecting post 43 extends out of the connecting groove 215. The connecting block 44 is fixedly connected to the end of the connecting post 43 opposite to the sliding post 41. The length of the connecting block 44 is greater than the width of the slot 81. The connecting post 43 moves within the slot 81, and the connecting block 44 moves within the annular groove 82.

[0057] Reference Figure 2 and Figure 6 The lower plate seat 21 has a scale at one end away from the upper claw plate 1. The rotating column 52 has a limit port 526. One end of the adjusting rod 9 passes through the limit port 526 and is fixed by a pin. The other end of the adjusting rod 9 drives the rotating column 52 to rotate and points to the scale to adjust the eccentric angle.

[0058] The implementation principle of the precision eccentricity adjustment device for centerless grinding of bearing rings in this application embodiment is as follows: A sleeve 3 is mounted on a lower jaw plate 2, an eccentric wheel 51 is mounted inside the sleeve 3, a rotating column 52 is inserted into a slotted opening 512, and the upper jaw plate 1 is positioned and installed with the sleeve 3. The rotating column 52 is assembled with a nut 7. Rotating the lead screw 53 causes the rotating column 52 to move within the slotted opening 512, adjusting the eccentricity value of the upper jaw plate 1 relative to the lower jaw plate 2. After adjustment, the nut 7 is tightened, and the bearing ring is installed... Install the upper jaw plate 1 and the disk plate 2 on the lower jaw plate 2. Rotate the nut 7 so that the upper jaw plate 1 can rotate relative to the lower jaw plate 2. While rotating the nut 7, pull the connecting block 44 so that the sliding column 41 moves away from the first positioning groove 321. The sleeve 3 is unlocked from the lower jaw plate 2. Rotate the adjusting rod 9 so that the sleeve 3 rotates and the eccentric angle is adjusted. After the adjustment is completed, tighten the nut 7 and adjust the lower support and the rear support to support the bearing ring. After the adjustment is completed, remove the lower jaw plate 2 and the upper jaw plate 1.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A precision eccentricity adjustment device for centerless grinding of bearing rings, characterized in that: The device includes a lower jaw disc (2), a sleeve (3), an eccentric wheel (51), an upper jaw disc (1), and a rotating column (52). The lower jaw disc (2) is coaxially provided with a through-hole (212). The sleeve (3) includes an upper cylinder (31), a connecting ring (32), and a lower cylinder (33). The inner diameter of the upper cylinder (31) is larger than the outer diameter of the lower cylinder (33). The inner wall of the connecting ring (32) is coaxially fixedly connected to the outer wall of the lower cylinder (33), and the outer wall of the connecting ring (32) is coaxially fixedly connected to the inner wall of the upper cylinder (31). The lower cylinder (33) is coaxially rotatably connected to the through-hole. The inner wall of the opening (212) is provided with the eccentric wheel (51) coaxially embedded in the upper cylinder (31). The eccentric wheel (51) is provided with a waist-shaped opening (512). The length direction of the waist-shaped opening (512) is along the radial direction of the eccentric wheel (51). The upper claw disk (1) is located on the side of the upper cylinder (31) away from the lower claw disk (2). The rotating column (52) is coaxially fixedly connected to the upper claw disk (1). The rotating column (52) is slidably connected to the inner wall of the waist-shaped opening (512). The upper claw disk (1) is used to fix the bearing ring, and the lower claw disk (2) is used to fix the disk. It also includes a lead screw (53), both ends of the eccentric wheel (51) are provided with connection ports (513), the axial direction of the connection port (513) is parallel to the length direction of the waist-shaped opening (512), the connection port (513) is connected to the waist-shaped opening (512), both ends of the upper cylinder (31) are provided with through holes (311), the through holes (311) are connected to the connection ports (513), the lead screw (53) passes through the through holes (311) and is threaded to the inner wall of the connection port (513), the lead screw (53) is used to abut against the outer wall of the rotating column (52); It also includes a pointer plate (54), which is fixedly connected to the end of the lead screw (53) away from the rotating column (52). The lower claw plate (2) has a scale at the end facing the upper claw plate (1). The pointer plate (54) abuts against the end face of the lower claw plate (2) for reading. It also includes a sliding column (41), the connecting ring (32) is provided with a first positioning groove (321) at one end facing the lower claw disk (2), the lower claw disk (2) is provided with a sliding groove (214) at one end facing the upper claw disk (1), the sliding column (41) is slidably connected to the groove wall of the sliding groove (214), and the sliding column (41) is used to be embedded in the first positioning groove (321); It also includes a nut (7), which is located on the side of the lower jaw plate (2) away from the upper jaw plate (1). The outer wall of the rotating column (52) is provided with an external thread. The nut (7) is sleeved on the outer circumference of the rotating column (52). The nut (7) is threaded to the outer wall of the rotating column (52). The outer diameter of the nut (7) is larger than the diameter of the through-hole (212). It also includes a retaining ring (8), a connecting post (43), and a connecting block (44). The retaining ring (8) is coaxially fixedly connected to the end of the nut (7) facing the lower jaw disk (2). The end of the retaining ring (8) away from the nut (7) is coaxially provided with a retaining groove (81). The bottom of the retaining groove (81) is provided with an annular groove (82). The width of the annular groove (82) is greater than the width of the retaining groove (81). The end of the lower jaw disk (2) facing the nut (7) is provided with a connecting groove (215). The connecting groove (215) is connected to the sliding groove (214). The connecting post (43) is fixedly connected to the end of the sliding post (41) away from the upper jaw disk (1). The connecting block (44) is fixedly connected to the end of the connecting post (43) away from the sliding post (41). The connecting post (43) moves in the retaining groove (81). The length of the connecting block (44) is greater than the width of the retaining groove (81). It also includes a second spring (42), and an abutment ring (411) is coaxially fixedly connected to the outer wall of the sliding column (41). One end of the second spring (42) is fixedly connected to the bottom of the sliding groove (214), and the other end of the second spring (42) is fixedly connected to the abutment ring (411).

2. The precision eccentricity adjustment device for centerless grinding of bearing rings according to claim 1, characterized in that: It also includes a warning component (6), which includes an abutment block (61), a linkage block (62), and a warning block (63). The rotating column (52) has an abutment groove (521) on its outer wall facing the lead screw (53). The rotating column (52) has a linkage port (522). The outer wall of the rotating column (52) has a warning groove (523). One end of the linkage port (522) is connected to the abutment groove (521), and the other end of the linkage port (522) is connected to the warning groove (523). The abutment block (61) 61) Slidingly embedded in the abutment groove (521), the linkage block (62) is slidably connected to the inner wall of the linkage port (522), the warning block (63) is slidably embedded in the warning groove (523), the abutment block (61) has an abutment surface (612) at one end facing the linkage block (62), the warning block (63) has a warning surface (631) at one end facing the linkage block (62), one end of the linkage block (62) abuts against the abutment surface (612), and the other end of the linkage block (62) abuts against the warning surface (631).

3. The precision eccentricity adjustment device for centerless grinding of bearing rings according to claim 2, characterized in that: The warning component (6) further includes a mounting plate (64) and a first spring (65). The wall of the warning groove (523) is provided with a mounting groove (525). The mounting plate (64) is fixedly connected to one end of the warning block (63) facing the mounting groove (525). One end of the first spring (65) is fixedly connected to the mounting plate (64), and the other end of the first spring (65) is fixedly connected to the wall of the mounting groove (525).

4. The precision eccentricity adjustment device for centerless grinding of bearing rings according to claim 1, characterized in that: The upper cylinder (31) is provided with a second positioning groove (312) at the end opposite to the lower claw disk (2). The upper claw disk (1) is connected to a limiting strip (113) at the end facing the lower claw disk (2). The second positioning groove (312) is used for the limiting strip (113) to be embedded.

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