A bearing outer ring groove grinding device for bearing machining

Abstract

The application relates to the field of polishing equipment, in particular to bearing outer ring groove polishing equipment for bearing machining, which comprises a casing, a mounting plate is mounted on one side in the casing, a machine head is mounted on the top of the mounting plate, a machine head main shaft is mounted on the driving end of the machine head, a mounting disc is mounted on the end, away from the machine head, of the machine head main shaft, a bearing outer ring main body is mounted on the end, away from the machine head main shaft, of the mounting disc, a plurality of independent support units are arranged on the inner side of the swivel ring, the independent support units respectively form a high-load support group and a circumferential auxiliary support group, the polishing wheel is matched with the gas outlet disc with the inclined gas outlet on both sides, a directional air curtain surrounding the grinding area can be formed, the cooling liquid and the grinding dust remaining in the groove are disturbed and taken out, the polishing wheel working surface is cleaned by matching the independent blowing pipeline, the polishing wheel abrasive particle blockage can be reduced, and the continuous machining stability of the equipment can be improved.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment, and more particularly to a bearing outer ring groove grinding device for bearing processing. Background Technology

[0002] As a crucial basic component in mechanical equipment used to support rotating parts, the quality of bearings directly affects the stability, transmission accuracy, and service life of the equipment during operation. In the bearing manufacturing process, the outer ring grooves of the bearing usually need to be precision-machined by grinding equipment to obtain the groove dimensional accuracy and surface quality that meet assembly requirements. Currently, bearing outer ring groove grinding equipment mainly drives the outer ring of the bearing to rotate and uses a high-speed rotating grinding wheel to grind the outer ring grooves. During the processing, coolant is used to cool and lubricate the grinding area to reduce the adverse effects of grinding heat on the workpiece.

[0003] However, existing bearing outer ring groove grinding equipment still has certain shortcomings in actual processing. On the one hand, when the bearing outer ring is subjected to the radial cutting force of the grinding wheel, it is prone to slight elastic deformation and vibration displacement. Especially when the groove processing area is subjected to continuous grinding load, if there is no effective auxiliary support, it is easy to cause the stability of the processing area to decrease, which in turn affects the roundness, dimensional accuracy and surface quality of the groove. On the other hand, the existing auxiliary support structure usually adopts a fixed position support wheel or clamping structure. During long-term processing, the support components near the grinding area continuously bear a large reaction force, which is prone to wear, increased clearance and reduced support accuracy. At the same time, it is difficult to make flexible adjustments according to different specifications of bearing outer rings and different processing positions.

[0004] Furthermore, during the grinding process of bearing outer ring grooves, the metal chips generated during grinding are easily mixed with the coolant and remain inside the grooves. If they cannot be discharged in time, the grinding chips can easily re-enter the processing area, affecting the processing state of the grinding wheel and potentially causing scratches or processing defects on the groove surface. Existing equipment usually relies solely on the natural flow of coolant for chip removal, which has limited cleaning effect and is difficult to meet the requirements of high-precision bearing outer ring groove processing.

[0005] Therefore, there is an urgent need for a bearing outer ring groove grinding machine for bearing processing to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by providing a bearing outer ring groove grinding device for bearing processing.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a bearing outer ring groove grinding device for bearing processing, comprising a housing, an mounting plate installed on one side inside the housing, a machine head installed on the top of the mounting plate, a machine head spindle installed on the drive end of the machine head, a mounting plate installed on the end of the machine head spindle away from the machine head, a bearing outer ring body installed on the end of the mounting plate away from the machine head spindle, a fixed seat provided on the side of the machine head near the electric slide table, the fixed seat being installed on the top of the mounting plate, a rotating ring provided on the upper inner side of the fixed seat, a gear ring fixedly connected to the inner side of the rotating ring, an external tooth groove opened on the outer circumference of the rotating ring, a drive gear meshing at the bottom of the external tooth groove, and a step gear fixedly connected to the middle shaft of the drive gear. The stepper motor is installed inside the fixed base. Multiple independent support units are arranged on the inner side of the rotating ring. The independent support units form a high-load support group and a circumferential auxiliary support group. The high-load support group is composed of continuously distributed independent support units, and the circumferential auxiliary support group is composed of evenly intermittently distributed independent support units. The high-load support group is used to support the outer circle side of the bearing outer ring body corresponding to the grinding area. The circumferential auxiliary support group is used to support the outer circumference of the remaining area of ​​the bearing outer ring body. According to the working conditions and grinding position changes, the multiple independent support units in the high-load support group and the circumferential auxiliary support group are rearranged to form a high-load support area corresponding to the grinding area.

[0008] Each independent support unit includes a slide block slidably connected to the inner side of the rotating ring. An electric push rod is installed in the center of each slide block. A reduction motor is installed inside each slide block. A drive gear is fixedly connected to the drive end of each reduction motor. The drive gear meshes with a gear ring. A buffer connecting seat is fixedly connected to the telescopic end of each electric push rod. A fixing frame is installed at the end of each buffer connecting seat away from the electric push rod. A support wheel is rotatably connected to the outer periphery of the fixing frame away from the electric push rod via a bearing.

[0009] Preferably, each of the support wheels and the fixed frame is provided with a mounting ring, and each mounting ring is equipped with a vibration sensor in the middle, and each mounting ring is fixedly connected to the outer periphery of the fixed frame.

[0010] Preferably, an electric slide table two is installed on the rear side of the mounting plate, and a liquid storage tank is installed on the top moving part of the electric slide table two. A pump body is installed inside the liquid storage tank, and the output end of the pump body is fixedly connected to a water outlet pipe. The output end of the water outlet pipe is facing the grinding area of ​​the outer ring main body groove of the bearing.

[0011] Preferably, an electric slide is installed on the side of the housing away from the machine head. A machining spindle is installed on the top moving part of the electric slide. An installation shaft is installed on the drive end of the machining spindle. A grinding wheel is installed at the end of the installation shaft by a fixing nut. Air outlets are provided on both sides of the grinding wheel. The air outlets are fixedly connected to the outer periphery of the installation shaft and communicate with the inside of the installation shaft. The outer periphery of the air outlets is provided with evenly distributed air outlets. The air outlets are inclined, and the inclination direction is the same as or opposite to the rotation direction of the bearing outer ring body.

[0012] Preferably, the side of the mounting shaft away from the grinding wheel is connected to an air pump via a rotary joint and a connecting hose, and the air pump is installed on the rear side of the top moving part of the electric slide.

[0013] Preferably, limit grooves are provided on both sides of the outer periphery of the rotating ring, and limit strips are fixedly connected to both sides of the upper inner part of the fixed base, and the limit strips are slidably connected inside the limit grooves.

[0014] Preferably, a brush disc is fixedly connected to one side of the fixing frame, and the top of the brush disc is in contact with the side of the support wheel away from the outer ring of the bearing body.

[0015] Preferably, a mounting bracket is installed on one side of the front part of the machining spindle, and an air outlet pipe runs through the middle of the mounting bracket. The output end of the air outlet pipe faces the grinding wheel, and the input end of the air outlet pipe is fixedly connected to the output end of the air pump.

[0016] Preferably, the support wheel includes an elastic contact layer, a support transition layer, and a wheel core arranged sequentially from the outside to the inside. The elastic contact layer is in direct contact with the outer ring body of the bearing. The support transition layer is located between the elastic contact layer and the wheel core and is used to limit the deformation of the elastic contact layer under pressure. The buffer connection seat includes a seat body, a piston column slidably disposed inside the seat body, a damping cavity disposed inside the seat body, a damping fluid filled in the damping cavity, an elastic element sleeved on the outer periphery of the piston column, and an adjusting screw connected to the elastic element.

[0017] Preferably, a control panel is installed on one side of the front of the housing, and the control panel is used to control other electrical control equipment.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention provides a dynamic support structure consisting of a rotating ring, a toothed ring, and multiple independent support units on the outer circumference of the bearing outer ring body. This structure ensures stable peripheral support for the bearing outer ring body during groove grinding. A high-load support group reinforces the machining area corresponding to the grinding wheel, allowing multiple support wheels to share the radial cutting force generated during grinding. This reduces elastic deformation and vibration shift caused by localized force concentration in the bearing outer ring body, improving positioning stability during groove machining. Simultaneously, the rotating ring is adjusted by the drive gear, external tooth groove, and toothed ring, enabling the independent support units at different positions to switch between the high-load support group and the circumferential auxiliary support group. This allows multiple support wheels to alternately bear larger grinding loads, preventing long-term stress on the fixed support area from causing increased wear and decreased support accuracy, thus improving the service life and long-term machining stability of the support mechanism.

[0020] 2. This invention, by incorporating an electric push rod, a buffer connecting seat, and elastic elements within an independent support unit, enables the support wheel to adjust its position according to the bearing outer ring body of different sizes and maintain a continuous contact state during processing. By replacing the rigid clamping method with an elastic loading structure, the support wheel can generate appropriate buffering when subjected to grinding impacts, reducing the vibration transmission caused by rigid collisions. Simultaneously, the support wheel employs an elastic contact layer, a support transition layer, and a wheel core structure arranged sequentially from the outside in. The outer elastic contact layer absorbs high-frequency vibrations and impact loads during processing, while the inner support transition layer limits excessive compression deformation of the elastic contact layer. This gives the support wheel both vibration damping capability and support rigidity, preventing the bearing outer ring body from shifting due to support wheel deformation and improving the accuracy of groove grinding.

[0021] 3. This invention, by setting an installation ring inside the support wheel and placing a vibration sensor in the middle of the installation ring, enables the equipment to acquire the vibration state of the support wheel in real time. When the outer ring of the bearing experiences abnormal vibration due to changes in grinding load, abnormal wear of the grinding wheel, or changes in processing parameters, the vibration can be transmitted to the vibration sensor through the support wheel. This allows for timely judgment of the processing status and adjustment of the support structure or processing parameters, reducing the adverse effects of abnormal vibration on the surface quality of the groove. Simultaneously, a brush plate on one side of the fixed frame cleans the debris adhering to the surface of the support wheel during rotation, reducing the entry of grinding debris into the contact area between the support wheel and the outer ring of the bearing. This prevents foreign objects from affecting the stability of the support and improves the reliability of the device operation.

[0022] 4. This invention provides air outlets connected to the inside of the mounting shaft on both sides of the grinding wheel, and multiple air outlets on the outer periphery of the air outlets. This allows airflow to be sprayed along the circumferential direction of the grinding wheel to the groove processing area of ​​the bearing outer ring body. During the grinding process, the airflow generated by the air outlets can disturb the coolant and grinding debris retained inside the groove, causing the debris attached to the bottom of the groove and near the grinding wheel to be discharged away from the processing area with the flow of coolant, reducing repeated cutting and processing interference caused by debris accumulation. At the same time, coolant is continuously delivered to the grinding area through the reservoir, pump body and water outlet pipe, so that the grinding wheel and processing position are cooled and lubricated. Combined with the airflow cleaning effect, the coolant flow effect is improved, the thermal deformation caused by grinding heat accumulation is reduced, and the surface quality and dimensional stability of the bearing outer ring groove after processing are improved. Attached Figure Description

[0023] Figure 1 This is a frontal perspective three-dimensional structural diagram of a bearing outer ring groove grinding device for bearing processing according to the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of a bearing outer ring groove grinding device for bearing processing according to the present invention;

[0025] Figure 3 This is a partial structural diagram of the bearing outer ring body of a bearing outer ring groove grinding device for bearing processing according to the present invention;

[0026] Figure 4 This is a partial structural diagram of the outer tooth groove of a bearing outer ring groove grinding device for bearing processing according to the present invention;

[0027] Figure 5 This is a partial structural diagram of the drive gear of a bearing outer ring groove grinding device for bearing processing according to the present invention;

[0028] Figure 6 This is a partial structural diagram of the slide of a bearing outer ring groove grinding device for bearing processing according to the present invention;

[0029] Figure 7 This is a partial structural diagram of the buffer connection seat of a bearing outer ring groove grinding device for bearing processing according to the present invention.

[0030] 101. Machine housing; 102. Control panel; 103. Bearing outer ring body; 104. Water outlet pipe; 105. Air outlet pipe; 106. Machine head spindle; 107. External gear groove; 108. Electric slide table two; 109. Liquid storage tank; 110. Electric slide table one; 111. Mounting bracket; 112. Mounting shaft; 113. Fixed base; 114. Mounting plate; 115. Grinding wheel; 116. Air outlet; 117. Air outlet 118. Spindle; 119. Slide; 120. Limiting groove; 121. Rotary ring; 122. Gear ring; 123. Fixing frame; 124. Support wheel; 125. Mounting disc; 126. Brush disc; 127. Limiting strip; 128. Drive gear; 129. Active gear; 130. Gear motor; 131. Electric push rod; 132. Mounting ring; 133. Vibration sensor; 134. Buffer connecting seat. Detailed Implementation

[0031] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0032] like Figures 1-7The bearing outer ring groove grinding equipment shown includes a housing 101. A control panel 102 is installed on one side of the front of the housing 101. The control panel 102 is used to control other electrical control equipment. An installation plate 114 is installed on one side inside the housing 101. A machine head is installed on the top of the installation plate 114. A machine head spindle 106 is installed on the drive end of the machine head. An installation plate 125 is installed on the end of the machine head spindle 106 away from the machine head. A bearing outer ring body 103 is installed on the end of the installation plate 125 away from the machine head spindle 106. An electric slide table 108 is installed on the rear side of the installation plate 114. A liquid storage tank 109 is installed on the top moving part of the electric slide table 108. A pump body is installed inside the liquid storage tank 109. The output ends of the pump body are all fixedly connected to water outlet pipes 104. The output ends of the water outlet pipes 104 are all facing the groove grinding area of ​​the bearing outer ring body 103. An electric slide table 110 is installed on the side of the housing 101 away from the machine head. The top of the electric slide table 110... The moving part is equipped with a machining spindle 118. A mounting shaft 112 is mounted on the drive end of the machining spindle 118. A grinding wheel 115 is mounted on the end of the mounting shaft 112 via a fixing nut. Air outlet plates 117 are provided on both sides of the grinding wheel 115. The air outlet plates 117 are fixedly connected to the outer periphery of the mounting shaft 112 and communicate with the interior of the mounting shaft 112. Evenly distributed air outlets 116 are opened on the outer periphery of each air outlet plate 117. The air outlets 116 are inclined, and the inclination direction is perpendicular to the shaft. The outer ring body 103 rotates in the same or opposite directions. The side of the outer periphery of the mounting shaft 112 away from the grinding wheel 115 is connected to an air pump through a rotary joint and a connecting hose. The air pump is installed on the rear side of the top moving part of the electric slide table 110. A mounting bracket 111 is installed on the front side of the machining spindle 118. An air outlet pipe 105 passes through the middle of the mounting bracket 111. The output end of the air outlet pipe 105 faces the grinding wheel 115. The input end of the air outlet pipe 105 is fixedly connected to the output end of the air pump.

[0033] Furthermore, in specific implementation, the axial tilt angle of the air outlet 116 is set to 15°-30°. The air outlet direction of one side of the air outlet plate 117 is the same as the rotation direction of the bearing outer ring body 103, which is used to drive the coolant in the groove to flow circumferentially and carry out debris; the air outlet direction of the other side of the air outlet plate 117 is opposite to the rotation direction of the bearing outer ring body 103, which is used to form a reverse air curtain to prevent coolant from splashing to the rear of the grinding wheel 115. The mounting shaft 112 is a hollow shaft structure, and its end away from the grinding wheel 115 is connected to the air pump through a rotary sealing joint. The flexible hose ensures continuous airflow during the high-speed rotation of the mounting shaft 112. The output end of the water outlet pipe 104 is equipped with a fan-shaped nozzle, which completely covers the grinding contact arc area. The liquid storage tank 109 is equipped with a two-stage filter element to filter the returning coolant step by step, preventing grinding debris from scratching the workpiece surface with the circulating coolant. The output end of the air outlet pipe 105 is aligned with the outer peripheral working surface of the grinding wheel 115, and the continuous airflow can sweep away the embedded chips on the surface of the grinding wheel 115, maintain the cutting sharpness of the abrasive grains of the grinding wheel 115, and reduce the frequency of dressing the grinding wheel 115.

[0034] A fixed base 113 is provided on the side of the machine head near the electric slide table 110. The electric slide table 110 is an electric feed slide table capable of moving in three directions (X, Y, and Z). The fixed base 113 is installed on the top of the mounting plate 114. A rotating ring 121 is provided on the inner side of the upper part of the fixed base 113. A toothed ring 122 is fixedly connected to the inner side of the rotating ring 121. Limit grooves 120 are provided on both sides of the outer periphery of the rotating ring 121. Limit strips 127 are fixedly connected to both sides of the upper inner part of the fixed base 113. The limit bars 127 are all slidably connected inside the limit grooves 120. The outer circumference of the rotating ring 121 is provided with an external toothed groove 107. The bottom of the external toothed groove 107 is meshed with a drive gear 128. A stepper motor is fixedly connected to the middle shaft of the drive gear 128. The tail of the stepper motor integrates a power-off electromagnetic brake mechanism. When the equipment is powered on for processing, the brake coil is energized to release the brake disc, and the rotating ring 121 can rotate and adjust normally. When the machine stops or the power is cut off, the brake disc is pressed and locked to lock the motor output shaft, thereby forming a stable... A fixed circumferential reference locking structure is used to prevent the rotating ring from shifting due to grinding cutting force. The stepper motor is installed inside the fixed base 113. Multiple independent support units are set inside the rotating ring 121. The independent support units form a high-load support group and a circumferential auxiliary support group. The high-load support group is composed of continuously distributed independent support units. Specifically, the spacing between the independent support units in the high-load support group is set to 1.2 times the grinding arc length of the grinding wheel 115. The circumferential auxiliary support group is composed of evenly intermittently distributed independent support units. The high-load support group is used to support the outer circle side of the bearing outer ring body 103 corresponding to the grinding area. The circumferential auxiliary support group is used to support the outer circumference of the remaining area of ​​the bearing outer ring body 103. The rotating ring 121 is used to drive multiple independent support units to move circumferentially along the bearing outer ring body 103 to change the position of the high-load support group. The independent support units in the high-load support group and the circumferential auxiliary support group can be freely switched according to the working conditions.

[0035] Furthermore, in specific implementation, both the limiting strip 127 and the limiting groove 120 adopt a dovetail cross-section. The limiting strip 127 is fitted inside the limiting groove 120, which can limit the radial and axial displacement of the rotating ring 121, allowing the rotating ring 121 to rotate smoothly in the circumferential direction only. After receiving the command from the control system, the stepper motor drives the drive gear 128 to rotate. Through the meshing transmission between the drive gear 128 and the external tooth groove 107, the rotating ring 121 is driven to rotate circumferentially along the inner side of the fixed seat 113, realizing the synchronous angle adjustment of all independent support units. In this embodiment, a total of 7 sets of independent support units are set. Among them, 3 sets are continuously arranged to form a high-load support group, corresponding to the outer side of the grinding area of ​​the grinding wheel 115, which is used to directly offset the radial cutting force of grinding. The remaining 4 sets of independent support units are evenly distributed along the circumference to form a circumferential auxiliary support group, which is used to maintain the overall rotational stability of the workpiece. In specific use, according to the position of the grinding wheel 115 corresponding to the processing area, the circumferential position of multiple independent support units along the rotating ring 121 is adjusted so that some of the continuous support units can rotate circumferentially. The continuously distributed independent support units form a high-load support group, and the remaining independent support units form an auxiliary support area. When the cumulative bearing time of the high-load support group reaches a preset threshold, or when vibration detection data shows abnormal wear of the support wheel 124, the control system drives the rotating ring 121 to rotate at the corresponding angle, rotating the units in the original circumferential auxiliary support group to the grinding force side to form a new high-load support group. The original high-load support group units move to the low-load area for auxiliary support, realizing that multiple support units alternate bearing, balancing wear, and extending the overall service life. In addition, each independent support unit can drive the drive gear 129 to move independently circumferentially along the gear ring 122 through its own reduction motor 130, so as to drive the slide 119 to move circumferentially along the rotating ring 121, and adjust the circumferential position of each support wheel 124 individually. The number of units and distribution range of the high-load support group can be flexibly configured according to the bearing outer ring body 103 of different diameters and different groove processing positions to adapt to the processing needs of workpieces of various specifications.

[0036] Each independent support unit includes a slide block 119 slidably connected to the inner side of the rotating ring 121. An annular groove is provided on the inner side of the rotating ring 121. A slider that mates with the annular groove is provided at the bottom of the slide block 119. The slider and the annular groove are fitted with a dovetail or T-shaped sliding fit to prevent the slide block 119 from disengaging radially from the rotating ring 121. An electric push rod 131 is installed in the center of each slide block 119. A geared motor 130 is installed inside each slide block 119. A drive gear 129 is fixedly connected to the drive end of each geared motor 130, and the drive gear 129 meshes with a gear ring 122. Each telescopic end of the electric push rod 131 is fixedly connected to a buffer connecting seat 134. The buffer connecting seat 134 includes a seat body, a piston rod slidably disposed inside the seat body, a damping cavity disposed inside the seat body, damping fluid filled in the damping cavity, an elastic element sleeved on the outer periphery of the piston rod, and an adjusting screw connected to the elastic element. A maintenance hole is provided on the side wall of the seat body, which communicates with the damping cavity for replenishing or replacing the damping fluid. One end of the piston rod is connected to the fixed frame 123, and the other end extends into the damping cavity. The adjusting screw is used to adjust the pre-compression of the elastic element to change the distance between the support wheel 124 and the outer ring of the bearing. The preload between the main bodies 103; when the support wheel 124 is subjected to radial impact during the grinding process, the piston rod moves in the damping cavity and squeezes the damping fluid. The damping effect generated by the flow of the damping fluid consumes the vibration energy. At the same time, in conjunction with the elastic recovery effect of the elastic element, the support wheel 124 is kept in stable contact with the outer ring of the bearing body 103. The end of the buffer connecting seat 134 away from the electric push rod 131 is equipped with a fixed frame 123. The outer periphery of the fixed frame 123 away from the electric push rod 131 is rotatably connected to the support wheel 124 through the bearing. The support wheel 124 and the fixed frame 123 are connected by a bearing. Each is equipped with an installation ring 132, and a vibration sensor 133 is installed in the middle of each installation ring 132. The installation ring 132 is fixedly connected to the outer periphery of the fixing frame 123. A brush plate 126 is fixedly connected to one side of the fixing frame 123. The top of the brush plate 126 is in contact with the side of the outer periphery of the support wheel 124 away from the outer ring body 103 of the bearing. The support wheel 124 includes an elastic contact layer, a support transition layer and a wheel core arranged sequentially from the outside to the inside. The elastic contact layer is in direct contact with the outer ring body 103 of the bearing. The support transition layer is located between the elastic contact layer and the wheel core and is used to limit the deformation of the elastic contact layer under pressure.

[0037] Furthermore, in specific implementation, the pre-compression of the disc spring assembly can be adjusted by adjusting the screw, thereby adjusting the pre-tightening pressure of the support wheel 124 on the outer ring body 103 of the bearing. The radial impact generated during grinding is transmitted to the piston rod through the support wheel 124 and the fixed frame 123. The vibration energy is dissipated by the viscous resistance of the damping fluid. At the same time, the slight retraction of the elastic element avoids the workpiece surface indentation and vibration transmission caused by rigid support. The brush plate 126 is made of nylon bristles, and its bristle tips are always in contact with the outer circumferential surface of the support wheel 124. When the support wheel 124 rotates synchronously with the outer ring body 103 of the bearing, the brush plate 126 can scrape off the metal shavings and coolant impurities adhering to the surface of the support wheel 124 in real time, preventing impurities from damaging the outer circumferential surface of the workpiece as the support wheel rotates, ensuring support accuracy and workpiece appearance quality. The vibration sensor 133 is fixed to the cantilever end of the fixed frame 123 by the mounting ring 132. Its detection direction is arranged radially along the support wheel 124. The vibration amplitude signal at the support position is collected in real time and transmitted to the equipment control system through built-in wiring. When the vibration amplitude exceeds the set threshold, the system can automatically determine that the support wheel is worn, the workpiece is unstable, or the grinding parameters are abnormal, and trigger the support position rotation, feed speed reduction, or shutdown alarm accordingly to achieve closed-loop stable control of the processing process. The three-layer structure of the support wheel 124 is as follows: the outermost elastic contact layer is made of elastic polyurethane material with Shore hardness A70, which is in flexible contact with the outer circle of the bearing outer ring body 103, which can absorb high-frequency micro-vibration and avoid scratching the workpiece surface; the middle support transition layer is made of rigid polyurethane material with Shore hardness A90, which has a higher elastic modulus than the outer layer, which can limit the amount of compression deformation of the elastic contact layer and avoid the support position displacement caused by excessive material deformation; the innermost wheel core is made of aluminum alloy or 45# steel, and a deep groove ball bearing is embedded inside. It is rotatably connected to the fixed frame 123 through the bearing to ensure that the roller rotates flexibly and reduce frictional resistance.

[0038] Working principle:

[0039] In actual use, the bearing outer ring body 103 to be processed is installed and fixed on one end of the mounting plate 125. The main spindle 106 of the machine head drives the mounting plate 125 and the bearing outer ring body 103 to rotate, so that the bearing outer ring body 103 maintains a stable rotation state. Then, according to the size of the bearing outer ring body 103 and the position of the groove to be processed, the independent support unit is adjusted by controlling the control panel 102 to make the support wheel 124 close to the outer circumference of the bearing outer ring body 103 and keep it in abutment. The radial position of the support wheel 124 is adjusted by the extension and retraction of the electric push rod 131. At the same time, with the adjustment screw and elastic element in the buffer connecting seat 134, a suitable preload is maintained between the support wheel 124 and the bearing outer ring body 103, so as to ensure the support effect while avoiding damage to the bearing outer ring body. When the bearing outer ring body 103 is subjected to groove grinding, the machining spindle 118 drives the mounting shaft 112 and the grinding wheel 115 to rotate at high speed. The position of the machining spindle 118 is adjusted by the electric slide table 110, so that the grinding wheel 115 moves to the groove processing area of ​​the bearing outer ring body 103 to perform grinding. During the grinding process, due to the radial cutting force generated between the grinding wheel 115 and the bearing outer ring body 103, the bearing outer ring body 103 is prone to local elastic deformation and vibration displacement. At this time, the high-load support group located on the outer periphery of the grinding area strengthens the support of the area through multiple continuously arranged independent support units, improves the local stiffness of the grinding area, and limits the radial deformation of the bearing outer ring body 103.Meanwhile, the circumferential auxiliary support group located in other areas provides uniform support to the remaining positions of the bearing outer ring body 103, ensuring the overall stability of the bearing outer ring body 103 during rotational machining. As machining time increases, the support wheels 124 in the high-load support group will continuously bear a large grinding reaction force. To avoid prolonged stress on some support wheels 124 leading to accelerated wear and decreased support accuracy, the reduction motor 130 is controlled to drive the drive gear 129 to rotate, causing the drive gear 129 to mesh with the gear ring 122 and drive the rotating ring 121 to adjust its angle. This allows the independent support units in different positions to switch between the high-load support group and the circumferential auxiliary support group, thereby changing the position of the high-load support area and enabling multiple support wheels 124 to rotate. 24 can alternately bear the main support role, improve the service life of the overall support mechanism, and maintain long-term machining accuracy. During the adjustment of the rotating ring 121, the movement trajectory of the rotating ring 121 is restricted by the cooperation between the limiting groove 120 on the outer periphery of the rotating ring 121 and the limiting strip 127 on the inner side of the fixed seat 113, ensuring the stability of the rotating ring 121 during rotation and preventing the rotating ring 121 from shifting due to the support load. At the same time, multiple independent support units can be independently adjusted according to the machining requirements of the outer ring body 103 of different specifications of bearings, so that the distribution position of the support wheel 124 matches the grinding area, thereby improving the adaptability of the device to workpieces of different sizes and different groove machining positions. During the support process, the support wheel 124 4. The vibration sensor 133 in the internal mounting ring 132 monitors the vibration state of the support wheel 124 in real time. When the bearing outer ring body 103 vibrates abnormally due to changes in grinding load, the vibration is transmitted to the mounting ring 132 through the support wheel 124 and detected by the vibration sensor 133. This allows the operator or control system to adjust the grinding parameters or the position of the corresponding independent support unit based on the detection results, thus maintaining a stable machining process. Simultaneously, the support wheel 124 employs an elastic contact layer, a support transition layer, and a wheel core structure arranged sequentially from the outside to the inside. When the outer elastic contact layer contacts the bearing outer ring body 103, it absorbs contact impact and reduces vibration transmission. The inner support transition layer restricts the vibration transmitted through the elastic contact layer. The bearing outer ring body 103 is subjected to compression deformation, thereby improving vibration reduction capability while ensuring support stiffness. Through the above process, the adjustable support layout of the rotating ring 121, the independent support unit that can switch the support area, and the support wheel 124 with buffer and vibration reduction capability are used to ensure that the bearing outer ring body 103 always maintains a stable support state during the groove grinding process, reducing vibration, displacement and local deformation caused by grinding load, improving the machining accuracy and machining stability of the bearing outer ring groove. During the grinding process, the pump body inside the liquid storage tank 109 delivers coolant to the water outlet pipe 104, and sprays it into the grinding area of ​​the bearing outer ring body 103 through the water outlet pipe 104 to cool and lubricate the grinding wheel 115 and the machining position, reducing the heat generated during the grinding process.Simultaneously, the air pump delivers gas into the mounting shaft 112, and the gas is ejected through the air outlet 116 on the air outlet plate 117 to clean the area around the grinding wheel 115, promptly blowing away grinding debris adhering to the surface of the grinding wheel 115 and improving the continuous grinding capability of the grinding wheel 115. In addition, the air outlet pipe 105 on the mounting bracket 111 outputs airflow in the processing direction of the grinding wheel 115 to further assist in removing grinding debris and reduce the impact of debris accumulation on machining accuracy. When the grinding wheel 115 grinds the inner groove of the bearing outer ring body 103, due to the continuous spraying of coolant into the grinding area, some coolant will carry the metal debris generated by grinding and remain in the groove of the bearing outer ring body 103. If it cannot be discharged in time, it is easy to cause repeated cutting and abrasive accumulation in the grinding area. At this time, the air pump delivers compressed gas into the mounting shaft 112, and the airflow runs along the mounting shaft. Air 112 enters the air outlet plates 117 located on both sides of the grinding wheel 115 and is sprayed into the inner groove area of ​​the bearing outer ring body 103 through the air outlets 116 evenly distributed on the outer periphery of the air outlet plates 117. Since the air outlets 116 are distributed circumferentially along the air outlet plates 117, a multi-directional airflow can be formed around the grinding wheel 115, causing the coolant near the grinding area to flow. Simultaneously, it disturbs the grinding debris adhering to the bottom of the grooves of the bearing outer ring body 103 and around the grinding wheel 115, causing the mixture of coolant and debris to flow away from the grinding area. This reduces the accumulation of debris inside the grooves, reduces the impact of grinding debris on the continuous processing of the grinding wheel 115, and improves the surface finish of the grooves. At the same time, the air outlet pipe 105 on the mounting bracket 111 continuously sprays airflow onto the surface of the grinding wheel 115, causing debris embedded in the abrasive grain gaps to detach, improving the continuous cutting capability of the grinding wheel.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A bearing outer ring groove grinding device for bearing processing, comprising a housing (101), characterized in that: An installation plate (114) is installed on one side inside the housing (101). A machine head is installed on the top of the installation plate (114). A machine head spindle (106) is installed on the drive end of the machine head. An installation disc (125) is installed on the end of the machine head spindle (106) away from the machine head. A bearing outer ring body (103) is installed on the end of the installation disc (125) away from the machine head spindle (106). A fixed seat (113) is provided on the side of the machine head near the electric slide table (110). The fixed seat (113) is installed on the top of the installation plate (114). A rotating ring (121) is provided on the inner side of the upper part of the fixed seat (113). A gear ring (122) is fixedly connected to the inner side of the rotating ring (121). An external tooth groove (107) is opened on the outer circumference of the rotating ring (121). A drive gear is meshed at the bottom of the external tooth groove (107). 128), a stepper motor is fixedly connected to the central shaft of the drive gear (128), the stepper motor is installed inside the fixed seat (113), and multiple independent support units are provided on the inner side of the rotating ring (121). The independent support units respectively form a high load support group and a circumferential auxiliary support group. The high load support group is composed of continuously distributed independent support units, and the circumferential auxiliary support group is composed of uniformly intermittently distributed independent support units. The high load support group is used to support the outer circle side of the bearing outer ring body (103) and the grinding area. The circumferential auxiliary support group is used to support the outer circumference of the remaining area of ​​the bearing outer ring body (103). According to the working conditions and grinding position changes, the multiple independent support units in the high load support group and the circumferential auxiliary support group are rearranged to form a high load support area corresponding to the grinding area. Each independent support unit includes a slide block (119) slidably connected to the inner side of the rotating ring (121). An electric push rod (131) is installed in the middle of each slide block (119). A geared motor (130) is installed inside each slide block (119). A drive gear (129) is fixedly connected to the drive end of each geared motor (130). The drive gear (129) meshes with a gear ring (122). A buffer connecting seat (134) is fixedly connected to the telescopic end of each electric push rod (131). A fixing frame (123) is installed at the end of the buffer connecting seat (134) away from the electric push rod (131). A support wheel (124) is rotatably connected to the outer periphery of the end of the fixing frame (123) away from the electric push rod (131) through a bearing.

2. The bearing outer ring groove grinding equipment for bearing processing according to claim 1, characterized in that: An installation ring (132) is provided between the support wheel (124) and the fixed frame (123). A vibration sensor (133) is installed in the middle of the installation ring (132). The installation ring (132) is fixedly connected to the outer periphery of the fixed frame (123).

3. The bearing outer ring groove grinding equipment for bearing processing according to claim 1, characterized in that: An electric slide table (108) is installed on the rear side of the mounting plate (114). A liquid storage tank (109) is installed on the top moving part of the electric slide table (108). A pump body is installed inside the liquid storage tank (109). The output end of the pump body is fixedly connected to a water outlet pipe (104). The output end of the water outlet pipe (104) faces the groove grinding area of ​​the bearing outer ring body (103).

4. The bearing outer ring groove grinding equipment for bearing processing according to claim 1, characterized in that: An electric slide table (110) is installed on the side away from the machine head inside the housing (101). A machining spindle (118) is installed on the top moving part of the electric slide table (110). An installation shaft (112) is installed on the driving end of the machining spindle (118). A grinding wheel (115) is installed at the end of the installation shaft (112) by a fixing nut. Air outlets (117) are provided on both sides of the grinding wheel (115). The air outlets (117) are fixedly connected to the outer periphery of the installation shaft (112) and communicate with the inside of the installation shaft (112). The outer periphery of the air outlets (117) is provided with evenly distributed air outlets (116). The air outlets (116) are inclined, and the inclination direction is consistent with or opposite to the rotation direction of the bearing outer ring body (103).

5. The bearing outer ring groove grinding equipment for bearing processing according to claim 4, characterized in that: The side of the mounting shaft (112) away from the grinding wheel (115) is connected to an air pump via a rotary joint and a connecting hose. The air pump is installed on the rear side of the top moving part of the electric slide table (110).

6. The bearing outer ring groove grinding equipment for bearing processing according to claim 1, characterized in that: Limiting grooves (120) are provided on both sides of the outer periphery of the rotating ring (121), and limiting strips (127) are fixedly connected to both sides of the upper inner part of the fixed seat (113). The limiting strips (127) are slidably connected inside the limiting grooves (120).

7. The bearing outer ring groove grinding equipment for bearing processing according to claim 1, characterized in that: Each of the fixed frames (123) has a brush plate (126) fixedly connected to one side, and the top of the brush plate (126) is in contact with the side of the support wheel (124) away from the outer ring body (103) of the bearing.

8. The bearing outer ring groove grinding equipment for bearing processing according to claim 4, characterized in that: A mounting bracket (111) is installed on one side of the front of the machining spindle (118). An air outlet pipe (105) runs through the middle of the mounting bracket (111). The output end of the air outlet pipe (105) faces the grinding wheel (115). The input end of the air outlet pipe (105) is fixedly connected to the output end of the air pump.

9. A bearing outer ring groove grinding device for bearing processing according to claim 1, characterized in that: The support wheel (124) includes an elastic contact layer, a support transition layer and a wheel core arranged sequentially from the outside to the inside. The elastic contact layer is in direct contact with the outer ring body (103) of the bearing. The support transition layer is located between the elastic contact layer and the wheel core and is used to limit the deformation of the elastic contact layer under pressure. The buffer connecting seat (134) includes a seat body, a piston column slidably disposed inside the seat body, a damping cavity disposed inside the seat body, a damping fluid filled in the damping cavity, an elastic element sleeved on the outer periphery of the piston column and an adjusting screw connected to the elastic element.

10. A bearing outer ring groove grinding device for bearing processing according to claim 1, characterized in that: A control panel (102) is installed on one side of the front of the housing (101), and the control panel (102) is used to control the other electrical control equipment.

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