Deep groove ball bearing ring grinding error compensation device and method
By using a deep groove ball bearing ring grinding error compensation device with built-in compensation rollers and clamping blocks, the problems of reduced extrusion pressure caused by thermal expansion and inconvenient external clamping are solved, achieving high-quality processing and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-03-24
AI Technical Summary
Existing deep groove ball bearing ring grinding error compensation devices are prone to reduced extrusion pressure due to thermal expansion during processing, affecting processing quality. Furthermore, the external clamping method is cumbersome to operate and inconvenient for pressure compensation.
It adopts a built-in compensation roller and clamping block structure, and automatically adjusts the extrusion pressure in real time through pressure sensors. Combined with the inner wall clamping and fixing, it avoids the effects of thermal expansion and simplifies the operation steps.
This improved the machining quality of deep groove ball bearing rings, reduced errors, simplified the operation process, and enhanced the convenience and efficiency of the equipment.
Smart Images
Figure CN121715928A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of deep groove ball bearing ring processing, and specifically relates to a grinding error compensation device and method for deep groove ball bearing rings. Background Technology
[0002] Deep groove ball bearings, formerly known as radial ball bearings, are one of the most widely used types of rolling bearings, possessing numerous significant advantages. They have low frictional resistance, can support high-speed operation, and can be widely used in various machine components subjected to radial loads or combined radial and axial loads. They even perform excellently in scenarios involving only axial loads. Deep groove ball bearings play a crucial role in equipment such as small-power electric motors, automotive and tractor gearboxes, machine tool gearboxes, and general machinery and tools. In practical use, deep groove ball bearings need to be installed together with bearing rings to achieve stable operation. The processing technology of deep groove ball bearing rings is extremely demanding, especially the grinding process, which must reach a high degree of precision to ensure that its dimensions are highly matched with the bearing and other components, so as to ensure the normal and smooth operation of the equipment. Therefore, when processing such bearing rings, error compensation devices are usually equipped to minimize processing errors, improve processing accuracy, and reduce rework. However, existing deep groove ball bearing ring grinding error compensation devices still have the following drawbacks during use: 1. During the machining of bearing rings, a large amount of heat is generated when precision grinding is performed on their inner walls. As a result, both the bearing ring workpiece and the clamping tool will experience thermal expansion due to the increased temperature. When the machining process is paused to check the progress and then the grinding operation is restarted, the grinding pressure between the workpiece and the grinding disc will decrease. Ordinary error compensation devices do not have the function of restoring the pressure under these circumstances. This results in incomplete grinding of the inner diameter of the bearing ring workpiece, thereby reducing the machining quality of the deep groove ball bearing ring. 2. Existing bearing ring error compensation devices generally use external clamping when fixing bearing rings. This clamping method is not only cumbersome, requiring operators to operate multiple fasteners sequentially to complete the fixing, but also easily obstructs the equipment during subsequent pressure compensation, causing inconvenience to external pressure compensation and other operations, greatly reducing the ease of use of the device.
[0003] Therefore, it is necessary to invent a device and method for compensating for grinding errors in deep groove ball bearing rings to solve the above problems. Summary of the Invention
[0004] To address the aforementioned problems, this invention provides a device and method for compensating grinding errors in deep groove ball bearing rings, thereby resolving the issues raised in the background section.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a deep groove ball bearing ring grinding error compensation device and method, comprising a support base, two slide rails and a moving stage, wherein a pressure compensation mechanism and a fixing component are respectively installed on the top of the moving stage, wherein the two slide rails are installed on both sides of one end of the top of the support base, and the moving stage is slidably connected to the outer wall of the two slide rails. The pressure compensation mechanism includes a slide fixedly installed on one side of the top of the movable platform. A limiting groove is formed on one side of the top of the slide. A mounting frame is slidably connected to the inner wall of the limiting groove. A first motor is installed on one side of the mounting frame, and a compensation roller is rotatably connected to the other side of the mounting frame. One end of the compensation roller is fixedly connected to the output end of the first motor. A first electric cylinder is installed at one end of the slide. A first push shaft is inserted through one side of the slide through the output end of the first electric cylinder. One end of the first push shaft is fixedly connected to one side of the mounting frame. A limiting shaft is inserted through one side of the inner wall of the limiting groove. A pressure sensor is fixedly installed at one end of the limiting shaft. One side of the pressure sensor contacts the other side of the mounting frame. A first spring is sleeved on the outer wall of the limiting shaft. The two ends of the first spring are fixedly connected to one side of the pressure sensor and one side of the inner wall of the limiting groove, respectively. The pressure sensor is electrically connected to the first electric cylinder. Preferably, the bottom of the movable platform has grooves on both sides, and the movable platform is slidably connected to the outer wall of the two slide rails through the two grooves. One end of the movable platform is threaded with a fixing bolt, and one end of the fixing bolt contacts one side of one of the slide rails.
[0006] Preferably, a fixed platform is installed at the other end of the top of the support base, a triangular clamp is rotatably connected to one side of the fixed platform, a second motor is installed on the inner wall of the fixed platform, and one end of the triangular clamp is fixedly connected to the output end of the second motor. A grinding disc is installed on the inner wall of the triangular clamp.
[0007] Preferably, the fixing component includes a positioning seat fixedly installed at the middle position of the top of the mobile platform, a positioning cylinder rotatably connected to one side of the positioning seat, an installation groove opened at one end of the inner wall of the positioning seat, and a second electric cylinder installed on the other side of the positioning seat.
[0008] Preferably, the output end of the second electric cylinder is inserted and connected to a second push shaft through the inner wall of the mounting groove, and one end of the second push shaft is fixedly connected to a conical limiting block through the inner wall of the positioning cylinder.
[0009] Preferably, the outer wall of the positioning cylinder is provided with three storage slots at equal intervals, and the inner walls of the three storage slots are all connected to a pressing rod. The outer wall of one end of the three pressing rods is connected to the inner wall of the positioning cylinder, and one end of each of the three pressing rods passes through the outer wall of the positioning cylinder and is fixedly connected to a clamping block.
[0010] Preferably, the outer walls of the three clamping blocks are respectively inserted and connected to the inner walls of the three storage slots, the other end of each of the three extrusion rods is fixedly provided with a limiting ball, the outer wall of one end of each of the three extrusion rods is sleeved with a second spring, and the two ends of the three second springs are respectively fixedly connected to one side of the three limiting balls and the inner wall of the positioning cylinder.
[0011] Preferably, a control switch is installed on one side of the support base, and the first electric cylinder, pressure sensor, first motor, second motor and second electric cylinder are all electrically connected to an external power source through the control switch.
[0012] The technical effects and advantages of this invention are as follows: 1. This invention activates a first electric cylinder to push a mounting bracket with a compensating roller via a first push shaft, causing the mounting bracket to press against the bearing race. At this time, the pressure of the mounting bracket when it contacts the pressure sensor is recorded and transmitted to the control system of the CNC lathe. During the grinding process, due to pressure error, the compensating force between the compensating roller and the bearing race decreases, which in turn reduces the force on the mounting bracket. This reduces the pressure on the pressure sensor, causing it to send a signal to the CNC lathe immediately. The first electric cylinder is then activated to push the mounting bracket, allowing the pressure sensor to return to its initial value and then stop applying pressure. At this time, the compensating force between the compensating roller and the bearing race is restored, so that the pressure on the bearing race is compensated during the grinding process, making it less prone to large errors, thereby improving the processing quality of deep groove ball bearing races. 2. This invention, based on the inner diameter of the bearing ring, activates a second electric cylinder on one side of the positioning seat to push a second push shaft at one end, causing a conical limiting block to slide inside the positioning cylinder. This, in turn, squeezes three limiting balls, causing the squeezing rod to compress the second spring and slide outside the positioning cylinder. The clamping block is then pushed out and squeezed into the inner wall of the bearing ring, thus fixing it in place. The clamping block is squeezed at the edge of the inner wall of the bearing ring, which does not affect the grinding of the inner wall. It is also convenient to operate, eliminating the need for various fasteners for fixing, reducing the number of steps for operators, and improving the ease of use of the equipment.
[0013] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the front of the invention; Figure 2 This is a schematic diagram of the interior of the fixing base of the present invention; Figure 3 This is a schematic diagram of the top of the mobile platform of the present invention; Figure 4 This is a schematic diagram of the pressure compensation mechanism of the present invention; Figure 5 This is an appendix to the specification of this invention. Figure 4 An enlarged schematic diagram of point A in the middle; Figure 6 This is a schematic diagram of the interior of the positioning cylinder of the present invention; Figure 7 This is an appendix to the specification of this invention. Figure 6 A magnified diagram of point B in the middle.
[0016] In the diagram: 1. Support base; 2. Slide rail; 3. Moving table; 4. Pressure compensation mechanism; 401. Slide table; 402. Limiting slide groove; 403. Mounting bracket; 404. First motor; 405. Compensating roller; 406. First electric cylinder; 407. First push shaft; 408. Limiting shaft; 409. Pressure sensor; 410. First spring; 5. Groove; 6. Fixing bolt; 7. Fixing table; 8. Triangular clamp; 9. Second motor; 10. Grinding disc; 11. Fixing assembly; 1101. Positioning seat; 1102. Positioning cylinder; 1103. Mounting groove; 1104. Second electric cylinder; 1105. Second push shaft; 1106. Conical limiting block; 1107. Storage groove; 1108. Extrusion rod; 1109. Clamping block; 1110. Limiting ball; 1111. Second spring. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] This invention provides, for example Figure 1-7The device and method for compensating grinding error of deep groove ball bearing rings shown include a support base (1), two slide rails (2) and a moving table (3). The moving table (3) is characterized in that a pressure compensation mechanism (4) and a fixing component (11) are respectively installed on the top of the moving table (3). The two slide rails (2) are installed on both sides of the top end of the support base (1), and the moving table (3) is slidably connected to the outer wall of the two slide rails (2). The pressure compensation mechanism (4) includes a slide (401) fixedly installed on one side of the top of the movable platform (3). A limiting groove (402) is provided on one side of the top of the slide (401). A mounting bracket (403) is slidably connected to the inner wall of the limiting groove (402). A first motor (404) is installed on one side of the mounting bracket (403). A compensation roller (405) is rotatably connected to the other side of the mounting bracket (403). One end of the compensation roller (405) is fixedly connected to the output end of the first motor (404). A first electric cylinder (406) is installed on one end of the slide (401). The output end of the first electric cylinder (406) passes through one side of the slide (401) and is inserted into the slide. There is a first push shaft (407), and one end of the first push shaft (407) is fixedly connected to one side of the mounting bracket (403). A limit shaft (408) is inserted and connected to one side of the inner wall of the limit slide groove (402). A pressure sensor (409) is fixedly installed at one end of the limit shaft (408), and one side of the pressure sensor (409) is in contact with the other side of the mounting bracket (403). A first spring (410) is sleeved on the outer wall of the limit shaft (408), and both ends of the first spring (410) are fixedly connected to one side of the pressure sensor (409) and one side of the inner wall of the limit slide groove (402), respectively. The pressure sensor (409) is electrically connected to the first electric cylinder (406). During use, the heat generated during the grinding of the bearing rings will cause thermal expansion of the workpiece, which will lead to pressure errors when the fixing component (11) fixes it. This will result in a certain difference in the grinding thickness set by the grinding disc (10). Before grinding, after the rings are fixed, the first electric cylinder (406) is activated to push the mounting bracket (403) through the first push shaft (407), which carries the compensation roller (405) to press against the bearing rings. At this time, the pressure when the mounting bracket (403) contacts the pressure sensor (409) is recorded and transmitted to the control system of the CNC lathe. During the grinding process, The pressure error causes a decrease in the squeezing force between the compensating roller (405) and the bearing ring, which in turn reduces the force on the mounting bracket (403). This reduces the pressure on the pressure sensor (409), causing it to send a signal to the CNC lathe immediately. The first electric cylinder (406) is then activated to push the mounting bracket (403) to restore the pressure sensor (409) to its initial value and then stop applying pressure. At this time, the squeezing compensation force between the compensating roller 405 and the bearing ring is restored, so that the pressure on the bearing ring is compensated during the grinding process, making it less prone to large errors, thereby improving the processing quality of the deep groove ball bearing ring. Furthermore, grooves (5) are provided on both sides of the bottom of the movable platform (3), and the movable platform (3) is slidably connected to the outer wall of the two slide rails (2) through the two grooves (5). A fixing bolt (6) is threaded to one end of the movable platform (3), and one end of the fixing bolt (6) contacts one side of one of the slide rails (2). When the movable platform 3 moves and the grinding disc 10 contacts the bearing ring for grinding, tightening the fixing bolt 6 will press it onto the slide rail 2 to fix the movable platform 3. Furthermore, a fixed platform (7) is installed at the other end of the top of the support base (1). A triangular clamp (8) is rotatably connected to one side of the fixed platform (7). A second motor (9) is installed on the inner wall of the fixed platform (7), and one end of the triangular clamp (8) is fixedly connected to the output end of the second motor (9). A grinding disc (10) is installed on the inner wall of the triangular clamp (8). After the grinding disc 10 is fixed by the triangular clamp 8, the second motor 9 can be started to rotate the grinding disc 10 to grind the bearing ring. Furthermore, the fixing component (11) includes a positioning seat (1101) fixedly installed at the middle position of the top of the moving platform (3). A positioning cylinder (1102) is rotatably connected to one side of the positioning seat (1101). An installation groove (1103) is opened at one end of the inner wall of the positioning seat (1101). A second electric cylinder (1104) is installed on the other side of the positioning seat (1101).
[0019] The output end of the second electric cylinder (1104) passes through the inner wall of the mounting groove (1103) and is connected to the second push shaft (1105). One end of the second push shaft (1105) passes through the inner wall of the positioning cylinder (1102) and is fixedly connected to the conical limiting block (1106). As shown in the attached manual, the front end of the conical limiting block (1106) is... Figure 6 As shown, the cone shape moves forward continuously, which will continuously squeeze the limiting ball 1110, thereby pushing the clamping block 1109 out of the inner wall of the squeezing ring.
[0020] The outer wall of the positioning cylinder (1102) is provided with three storage slots (1107) at equal intervals. The inner walls of the three storage slots (1107) are all connected with extrusion rods (1108). The outer wall of one end of the three extrusion rods (1108) is connected to the inner wall of the positioning cylinder (1102). One end of the three extrusion rods (1108) passes through the outer wall of the positioning cylinder (1102) and is fixedly connected with a clamping block (1109).
[0021] The outer walls of the three clamping blocks (1109) are respectively connected to the inner walls of the three receiving slots (1107). The other ends of the three extrusion rods (1108) are all fixed with limiting balls (1110). The outer walls of one end of the three extrusion rods (1108) are all fitted with second springs (1111). The two ends of the three second springs (1111) are respectively fixedly connected to one side of the three limiting balls (1110) and the inner wall of the positioning cylinder (1102). During the fixing process, according to the inner diameter of the bearing ring, the second electric cylinder (1104) on one side of the positioning seat (1101) is activated to push the second push shaft (1105) at one end to push the conical limiting block (1106) in the positioning cylinder (1107). The internal sliding of 102) and the squeezing of the three limiting balls (1110) cause the squeezing rod (1108) to compress the second spring (1111) and slide outside the positioning cylinder (1102), pushing out the clamping block (1109) and squeezing it into the inner wall of the bearing ring to fix it. The clamping block (1109) is squeezed at the edge of the inner wall of the bearing ring, which does not affect the grinding of its inner wall and is convenient to operate. There is no need to use various fasteners for fixing, reducing the number of operation steps for the staff. When resetting later, the second push shaft 1105 is withdrawn. Under the elastic action of the second spring 1111, the squeezing rod 1108 and the clamping block 1109 are put into the storage groove 1107 to release the fixation of the bearing ring.
[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A deep groove ball bearing ring grinding error compensation device, comprising a support base (1), two slide rails (2), and a moving table (3), characterized in that: The top of the mobile platform (3) is respectively equipped with a pressure compensation mechanism (4) and a fixing component (11). The two slide rails (2) are installed on both sides of the top end of the support base (1), and the mobile platform (3) is slidably connected to the outer wall of the two slide rails (2). The pressure compensation mechanism (4) includes a slide (401) fixedly installed on one side of the top of the movable platform (3). A limiting groove (402) is provided on one side of the top of the slide (401). A mounting bracket (403) is slidably connected to the inner wall of the limiting groove (402). A first motor (404) is installed on one side of the mounting bracket (403). A compensation roller (405) is rotatably connected to the other side of the mounting bracket (403). One end of the compensation roller (405) is fixedly connected to the output end of the first motor (404). A first electric cylinder (406) is installed on one end of the slide (401). The output end of the first electric cylinder (406) passes through one side of the slide (401) and is inserted into the slide. There is a first push shaft (407), and one end of the first push shaft (407) is fixedly connected to one side of the mounting bracket (403). A limit shaft (408) is inserted and connected to one side of the inner wall of the limit groove (402). A pressure sensor (409) is fixedly installed at one end of the limit shaft (408), and one side of the pressure sensor (409) is in contact with the other side of the mounting bracket (403). A first spring (410) is sleeved on the outer wall of the limit shaft (408), and both ends of the first spring (410) are fixedly connected to one side of the pressure sensor (409) and one side of the inner wall of the limit groove (402), respectively. The pressure sensor (409) is electrically connected to the first electric cylinder (406).
2. The deep groove ball bearing ring grinding error compensation device according to claim 1, characterized in that: The bottom of the movable platform (3) is provided with grooves (5) on both sides, and the movable platform (3) is slidably connected to the outer wall of the two slide rails (2) through the two grooves (5). One end of the movable platform (3) is threadedly connected to a fixing bolt (6), and one end of the fixing bolt (6) is in contact with one side of one of the slide rails (2).
3. The deep groove ball bearing ring grinding error compensation device according to claim 1, characterized in that: A fixed platform (7) is installed at the other end of the top of the support base (1). A triangular clamp (8) is rotatably connected to one side of the fixed platform (7). A second motor (9) is installed on the inner wall of the fixed platform (7), and one end of the triangular clamp (8) is fixedly connected to the output end of the second motor (9). A grinding disc (10) is installed on the inner wall of the triangular clamp (8).
4. The deep groove ball bearing ring grinding error compensation device according to claim 1, characterized in that: The fixing component (11) includes a positioning seat (1101) fixedly installed at the middle position of the top of the moving platform (3). A positioning cylinder (1102) is rotatably connected to one side of the positioning seat (1101). An installation groove (1103) is opened at one end of the inner wall of the positioning seat (1101). A second electric cylinder (1104) is installed on the other side of the positioning seat (1101).
5. The deep groove ball bearing ring grinding error compensation device according to claim 4, characterized in that: The output end of the second electric cylinder (1104) passes through the inner wall of the mounting groove (1103) and is connected to the second push shaft (1105). One end of the second push shaft (1105) passes through the inner wall of the positioning cylinder (1102) and is fixedly connected to the conical limit block (1106).
6. The deep groove ball bearing ring grinding error compensation device according to claim 5, characterized in that: The outer wall of the positioning cylinder (1102) is provided with three storage slots (1107) at equal intervals. The inner walls of the three storage slots (1107) are all connected with extrusion rods (1108). The outer wall of one end of the three extrusion rods (1108) is connected to the inner wall of the positioning cylinder (1102). One end of the three extrusion rods (1108) passes through the outer wall of the positioning cylinder (1102) and is fixedly connected with a clamping block (1109).
7. The deep groove ball bearing ring grinding error compensation device according to claim 6, characterized in that: The outer walls of the three clamping blocks (1109) are respectively inserted and connected to the inner walls of the three storage slots (1107). The other end of each of the three extrusion rods (1108) is fixedly provided with a limiting ball (1110). The outer wall of one end of each of the three extrusion rods (1108) is fitted with a second spring (1111), and the two ends of the three second springs (1111) are respectively fixedly connected to one side of the three limiting balls (1110) and the inner wall of the positioning cylinder (1102).
8. The deep groove ball bearing ring grinding error compensation device according to claim 1, characterized in that: A control switch is installed on one side of the support base (1), and the first electric cylinder (406), pressure sensor (409), first motor (404), second motor (9) and second electric cylinder (1104) are all electrically connected to an external power source through the control switch.
9. The compensation method for a deep groove ball bearing ring grinding error compensation device according to claim 1, characterized in that, The method is as follows: Step 1: First, place the deep groove ball bearing ring to be ground on the positioning cylinder (1102) and fix it with the fixing component (11). During the fixing process, according to the inner diameter of the bearing ring, start the second electric cylinder (1104) on one side of the positioning seat (1101) to push the second push shaft (1105) at one end to push the conical limit block (1106) to slide inside the positioning cylinder (1102), thereby squeezing the three limit balls (1110) so that the squeezing rod (1108) compresses the second spring (1111) to slide outside the positioning cylinder (1102), pushing out the clamping block (1109) and squeezing it into the inner wall of the bearing ring to fix it. The clamping block (1109) is squeezed at the edge of the inner wall of the bearing ring, which does not affect the grinding of its inner wall. Step 2: Then, by turning the fixing bolt (6) to release the fixing, the moving table (3) can slide on the slide rail (2) so that its bearing ring contacts the grinding disc (10), and the second motor (9) is started to rotate the triangular clamp (8) and then rotate the grinding disc (10) to grind the bearing ring. Step 3: During the grinding of the bearing ring, the heat generated by grinding will cause thermal expansion of the workpiece, which will lead to pressure errors when the fixing component (11) fixes it, resulting in a certain difference in the grinding thickness set by the grinding disc (10). Before grinding, after the ring is fixed, the first electric cylinder (406) is started to push the mounting bracket (403) with the compensation roller (405) through the first push shaft (407) to press against the bearing ring. At this time, the pressure when the mounting bracket (403) contacts the pressure sensor (409) is recorded and transmitted to the control system of the CNC lathe. During the grinding process, the pressure generated by the grinding component (11) will cause the bearing ring to expand. The pressure error causes a decrease in the squeezing force between the compensating roller (405) and the bearing ring, which in turn reduces the force on the mounting bracket (403). This reduces the pressure on the pressure sensor (409), causing it to send a signal to the CNC lathe immediately. The first electric cylinder (406) is then activated to push the mounting bracket (403) to restore the pressure sensor (409) to its initial value and stop applying pressure. At this time, the squeezing compensation force between the compensating roller (405) and the bearing ring is restored, so that the pressure on the bearing ring is compensated during the grinding process, making it less prone to large errors, thereby improving the processing quality of the deep groove ball bearing ring.