A blank bar grinding device for bearing processing and production

Abstract

The present invention relates to the field of grinding technology, and specifically to a blank bar stock grinding device for bearing processing and production, comprising a main body, a chuck for fixing the bar stock being provided on the main body, and a special-shaped grinding wheel being movably arranged inside the main body, a transmission assembly being arranged inside the main body and capable of driving the special-shaped grinding wheel to rotate; a track being arranged inside the main body, and the transmission assembly being movably arranged inside the track, a driving component being arranged inside the main body and used to drive the transmission assembly to rotate; a pneumatic sensor being movably arranged inside the main body and used to detect the wear state of the special-shaped grinding wheel; a grinding head being movably arranged inside the main body and located on one side of the grinding wheel. This blank bar stock grinding device for bearing processing and production, by providing the special-shaped grinding wheel, comprises a rough grinding working surface and a fine grinding working surface, and can complete the two processes of rough grinding and fine grinding in one clamping, thereby reducing the tool change time and repeated positioning error, and improving the processing efficiency and precision.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, in particular to a blank bar grinding device used for bearing processing and production. Background Art

[0002] Bearings, the heart of mechanical equipment, not only support and guide rotational motion but also effectively reduce frictional resistance during operation through their superior design, ensuring high-precision and efficient rotation. In this process, carefully selected bearing steel materials, with precisely proportioned strengthening elements such as carbon and chromium, not only impart unparalleled hardness and wear resistance to the material, but also ensure a high elastic limit, thus becoming an indispensable cornerstone for building high-performance bearings.

[0003] During the bearing manufacturing process, grinding technology acts like a fine scalpel, precisely carving the bar stock and gradually outlining every subtle contour of the bearing. However, even such a sophisticated process is not immune to challenges: rows of regularly distributed tiny cracks are often observed on the vertical surface of the grinding path. These scars affect the perfect appearance of the bearing and quietly erode its structural strength and durability, posing a hidden danger to its future operation.

[0004] In-depth investigation of the causes of these cracks reveals that the wear state of the grinding wheel has become a key factor that cannot be ignored. As a consumable tool in the grinding process, the grinding wheel often wears at an extraordinary rate when competing with high-hardness bearing steel. In order to maintain processing accuracy, the grinding wheel needs to be regularly dressed to ensure the stability of its cutting performance. However, if there is a slight mistake in this process, the flatness of the outer contour of the bearing may be damaged, the friction interface will become rough, and the friction force will increase accordingly. This increase in friction force not only further accelerates the wear of the grinding wheel, but may also generate excessive heat, pushing the workpiece surface to the edge of overburning, causing the material to become hard and brittle, and even directly leading to the workpiece being scrapped due to quality defects.

[0005] To this end, we propose a blank bar grinding device for bearing processing and production. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides a blank bar stock grinding device for bearing production, comprising a main body, a chuck for fixing the bar stock provided on the main body, and the following components:

[0007] Special-shaped grinding wheel, movably set inside the main body, used to grind the bar;

[0008] The transmission component is arranged inside the main body and can drive the special-shaped grinding wheel to rotate;

[0009] A track is provided in the main body, and a transmission assembly is movably provided in the track. When the transmission assembly is located at different positions in the track, it can drive different working surfaces of the special-shaped grinding wheel to grind the bar material;

[0010] A driving component is provided in the main body and is used to drive the transmission assembly to rotate;

[0011] The air pressure sensor is movably arranged in the main body to detect the wear status of the special-shaped grinding wheel;

[0012] The grinding head is movably arranged in the main body and located on one side of the grinding wheel, and is used for grinding the working surface of the grinding wheel.

[0013] In some embodiments, a shell is provided in the main body, the driving component includes a driving motor provided in the main body, the output end of the driving motor is connected to a transmission unit 1 and a transmission unit 2, the transmission unit 1 and the transmission unit 2 are both provided inside the shell, and the track is fixedly provided at the bottom of the shell.

[0014] In some embodiments, the transmission unit 1 includes a drive shaft connected to the output end of the drive motor, and a drive bevel gear is provided on the outer side of the drive shaft;

[0015] The second transmission unit is provided with two and is respectively located on both sides of the driving shaft. The second transmission unit includes two synchronous shafts rotatably arranged in the housing. The outer sides of the synchronous shafts are provided with transmission bevel gears meshing with the driving bevel gears. Rotating shafts are also rotatably arranged on both sides of the housing. A driving gear is fixedly provided on the outer side of the synchronous shaft. A driven gear meshing with the driving gear is provided on the outer side of the rotating shaft. A fixed shaft is also rotatably arranged in the housing. Synchronous gears are provided on the outer sides of the fixed shaft and the rotating shaft, and the two synchronous gears mesh with each other.

[0016] In some embodiments, the special-shaped grinding wheel comprises three working surfaces, namely a rough grinding working surface in the middle and fine grinding working surfaces on both sides.

[0017] In some embodiments, the transmission assembly includes a mounting plate movably arranged in a track, and transmission shafts are rotatably arranged on the upper and lower sides of the mounting plate. Pulleys are arranged on the outside of the two transmission shafts, and belts are arranged on the outside of the pulleys. The two transmission shafts are synchronously driven by belts, and the transmission shaft located at the bottom is connected to the special-shaped grinding wheel. A connecting block is provided in the other transmission shaft for transmission connection with the drive shaft or the fixed shaft.

[0018] In some embodiments, a connecting block is slidably provided on the transmission shaft, and the ends of the driving shaft and the fixed shaft are provided with sockets that are plugged into and matched with the connecting block. A movable ring fixedly connected to the connecting block is provided on the outer side of the transmission shaft, and a connecting rod is fixedly provided on the movable ring.

[0019] A slider is slidably provided in the track, the mounting plate is fixedly connected to the slider, a locking screw is fixedly provided on the back of the slider, a threaded sleeve is provided on the outer thread of the locking screw, and a sliding groove for the locking screw to slide is opened on the back of the track.

[0020] In some embodiments, a slide rail is fixedly provided inside the main body, a slide bar is slidably provided inside the slide rail, the shell is fixedly connected to the slide bar, a screw rod is rotatably provided inside any one of the slide rails, the screw rod thread passes through the slide bar, a motor is provided at one end of the slide rail, and the motor is transmission-connected to the screw rod.

[0021] In some embodiments, a fixed cylinder is fixedly provided on the inner side of the main body, a movable block is slidably provided in the fixed cylinder, the air pressure sensor is fixedly connected to the movable block, air cylinders are provided on both sides of the track, a piston is slidably provided in the air cylinder, a spring is provided at the bottom of the piston, the end of the spring is fixedly connected to the bottom of the air cylinder, the top of the piston extends into the track, and the air cylinders on both sides of the track are respectively connected to the two ends of the fixed cylinder through hoses.

[0022] In some embodiments, an electric push rod is fixedly disposed in the main body, and the grinding head is disposed at the end of the electric push rod.

[0023] In some embodiments, the air source of the air pressure sensor is compressed air.

[0024] The present invention has at least the following beneficial effects:

[0025] 1. Improve processing efficiency and precision: By setting up special-shaped grinding wheels, including rough grinding working surfaces and fine grinding working surfaces, rough grinding and fine grinding can be completed in one clamping. This reduces tool change time and repeated positioning errors, and improves processing efficiency and precision. In the rough grinding stage, a coarse-grained grinding wheel is used to quickly remove material. In the fine grinding stage, the speed and grinding wheel working surface are adjusted to achieve fine grinding to meet the final processing requirements, thus achieving controllable processing quality.

[0026] 2. Flexible transmission and speed regulation mechanism: The design of the transmission assembly and transmission unit allows the grinding wheel speed to be adjusted according to processing requirements. By changing the transmission ratio between the driving gear and the driven gear, different speed requirements for coarse grinding and fine grinding can be easily achieved, thereby improving the grinding effect.

[0027] 3. Intelligent wear detection and compensation: The application of air pressure sensor realizes contactless detection of grinding wheel wear. The grinding wheel wear is indirectly evaluated by monitoring the air pressure changes, which improves the accuracy and real-time performance of detection. When the grinding wheel wear is detected, the grinding head is automatically started for repair, which extends the service life of the grinding wheel, reduces the downtime caused by frequent grinding wheel replacement, and further improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 Schematic diagram of the internal structure of the main body of the present invention;

[0030] Figure 3 For the present invention Figure 2 Schematic diagram of local structure;

[0031] Figure 4 For the present invention Figure 3 Another structural diagram;

[0032] Figure 5 Schematic diagram of the structure of the transmission unit 1 and the transmission unit 2 of the present invention;

[0033] Figure 6 This is a schematic diagram of the transmission assembly structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of the special-shaped grinding wheel of the present invention;

[0035] Figure 8 This is a schematic diagram of the track structure of the present invention;

[0036] Figure 9 For the present invention Figure 8 A in the middle is an enlarged structural diagram;

[0037] Figure 10 This is a schematic diagram of the back structure of the track of the present invention.

[0038] In the figure: 1-main body; 2-special-shaped grinding wheel; 3-transmission assembly; 31-mounting plate; 32-transmission shaft; 33-connecting block; 34-movable ring; 35-connecting rod; 4-track; 5-driving component; 6-air pressure sensor; 7-grinding head; 8-transmission unit 1; 81-driving shaft; 82-driving bevel gear; 9-transmission unit 2; 91-synchronizing shaft; 92-transmission bevel gear; 93-rotating shaft; 94-driving gear; 95-driven gear; 96-fixed shaft; 97-synchronizing gear; 10-housing; 11-driving motor; 12-rough grinding working surface; 13-fine grinding working surface; 14-slider; 15-locking screw; 16-screw sleeve; 17-slide rail; 18-slide bar; 19-screw; 20-fixed cylinder; 21-movable block; 22-air cylinder; 23-piston; 24-spring; 25-electric push rod. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figures 1-10 The present invention provides a technical solution: a rough bar grinding device for bearing processing and production, comprising a main body 1, a chuck for fixing the bar is provided on the main body 1, the bar can be locked and positioned by the chuck, and the movement of the chuck can also drive the bar to feed. The above contents are all existing technologies and will not be repeated here. It also includes a special-shaped grinding wheel 2 movably arranged inside the main body 1, which is used to grind the bar. The special-shaped grinding wheel 2 includes three working surfaces, namely a rough grinding working surface 12 in the middle and fine grinding working surfaces 13 on both sides. When grinding the bar, the rough grinding working surface 12 on the special-shaped grinding wheel 2 can be used to rough grind the bar first, because in the rough grinding stage, the main purpose is to remove most of the excess on the surface of the outer ring of the bearing bar, so that its shape and size are close to the final requirements, and the surface roughness is preliminarily improved. In this stage, a coarse-grained grinding wheel is usually used for grinding. Through a large amount of cutting and a fast grinding speed, material is quickly removed to improve processing efficiency. Therefore, it is necessary to avoid using a grinding wheel with too fine a grain when rough grinding to avoid wasting time and resources. In the next step of processing, the position of the special-shaped grinding wheel 2 is changed so that its fine grinding surface 13 contacts the bar material, so that the bar material meets the processing requirements:

[0041] A transmission assembly 3 is further provided inside the main body 1. The transmission assembly 3 can drive the special-shaped grinding wheel 2 to rotate. A track 4 is also provided inside the main body 1, and the transmission assembly 3 is movably arranged in the track 4. When the transmission assembly 3 is located at different positions in the track 4, it can drive the special-shaped grinding wheel 2 to grind different working surfaces of the bar. A driving component 5 is also provided in the main body 1 to drive the transmission assembly 3 to rotate, thereby driving the special-shaped grinding wheel 2 to rotate.

[0042] A pneumatic sensor 6 is also provided in the main body 1, which can detect the wear state of the special-shaped grinding wheel 2. The pneumatic sensor indirectly measures the wear of the grinding wheel by monitoring the air pressure change caused by the distance change between the grinding wheel surface and the sensor nozzle. During the rotation or operation of the grinding wheel, the grinding wheel surface will gradually decrease due to wear, causing the distance between the nozzle and the grinding wheel surface to change. The sensor provides a stable airflow to the nozzle, and the airflow will be reflected or scattered after being sprayed onto the grinding wheel surface. The wear of the grinding wheel surface causes the gap between the nozzle and the grinding wheel surface to change, thereby affecting the flow state and pressure distribution of the airflow in the gap. The sensor converts the collected air pressure signal into an electrical signal, and processes it through an internal algorithm or an external processing system to achieve contactless detection.

[0043] A grinding head 7 for grinding the grinding wheel is also provided in the main body 1 and is located on one side of the grinding wheel.

[0044] A shell 10 is provided in the main body 1, and the driving component 5 includes a driving motor 11 arranged in the main body 1. The output end of the driving motor 11 is connected to the transmission unit 1 8 and the transmission unit 2 9. The transmission unit 1 8 and the transmission unit 2 9 are both arranged inside the shell 10, and the track 4 is fixedly set at the bottom of the shell 10.

[0045] The transmission unit 18 includes a drive shaft 81 connected to the output end of the drive motor 11. A drive bevel gear 82 is provided on the outer side of the drive shaft 81. The drive motor 11 drives the drive shaft 81 to rotate, and the drive shaft 81 drives the drive bevel gear 82 to rotate.

[0046] There are two transmission units 9, which are respectively located on both sides of the drive shaft 81. The transmission unit 9 includes two synchronous shafts 91 that are rotatably arranged in the housing 10. The outer sides of the synchronous shafts 91 are provided with transmission bevel gears 92 that mesh with the driving bevel gear 82. Rotating shafts 93 are also rotatably arranged on both sides of the housing 10. A driving gear 94 is fixedly provided on the outer side of the synchronous shaft 91. A driven gear 95 that meshes with the driving gear 94 is provided on the outer side of the rotating shaft 93. A fixed shaft 96 is also rotatably arranged in the housing 10. Synchronous gears 97 are provided on the outer sides of the fixed shaft 96 and the rotating shaft 93. The two synchronous gears 97 mesh with each other.

[0047] When the driving bevel gear 82 rotates, it will drive the transmission bevel gears 92 on both sides that are meshed with it to rotate, and then drive the synchronous shaft 91 to rotate. The synchronous shaft 91 drives the driving gear 94 to mesh with the driven gear 95, and then drives the rotating shaft 93 to rotate. The rotating shaft 93 drives the synchronous gear 97 to rotate, and the fixed shaft 96 is driven to rotate through the meshing of the two synchronous gears 97. The multiple gears arranged between the synchronous shaft 91 and the fixed shaft 96 allow the staff to adjust the transmission ratio between each gear according to the material of the bar and the material of the grinding wheel, that is, by adjusting the transmission ratio between the driving gear 94 and the driven gear 95, different rotation speeds of the grinding wheel during rough grinding and fine grinding can be achieved, thereby better achieving the grinding effect.

[0048] The transmission assembly 3 includes a mounting plate 31 movably arranged in the track 4, and a transmission shaft 32 is rotatably arranged on the upper and lower sides of the mounting plate 31. Pulleys are arranged on the outside of the two transmission shafts 32, and a belt is arranged on the outside of the pulleys. The two transmission shafts 32 are synchronously driven by belts. The transmission shaft 32 at the bottom is connected to the special-shaped grinding wheel 2, and a connecting block 33 is provided in the other transmission shaft 32 for transmission connection with the drive shaft 81 or the fixed shaft 96. When the connecting block 33 is connected to the drive shaft 81 or the fixed shafts 96 on both sides, the transmission connection between the transmission shaft 32 and the drive shaft 81 or the fixed shaft 96 can be realized, and then when the special-shaped grinding wheel 2 switches the working surface, it can be connected to the drive shaft 81 or the fixed shaft 96 respectively, thereby meeting the different speed requirements during rough grinding and fine grinding.

[0049] A connecting block 33 is slidably provided on the transmission shaft 32. Sockets are provided at the ends of the driving shaft 81 and the fixed shaft 96 for plugging and cooperating with the connecting block 33. A movable ring 34 fixedly connected to the connecting block 33 is provided on the outer side of the transmission shaft 32. A connecting rod 35 is fixedly provided on the movable ring 34. When the connecting rod 35 is moved, the connecting rod 35 drives the movable ring 34 and then drives the connecting block 33 to move within the transmission shaft 32, thereby realizing the plugging and cooperation between the connecting block 33 and the socket. The connecting block 33 is set as a polygonal rod, thereby smoothly completing the transmission.

[0050] A slider 14 is slidingly provided in the track 4, and the mounting plate 31 is fixedly connected to the slider 14. A locking screw 15 is fixedly provided on the back side of the slider 14, and a screw sleeve 16 is provided on the outer thread of the locking screw 15. A sliding groove for the locking screw 15 to slide is provided on the back side of the track 4. The slider 14 can drive the mounting plate 31 to move along the track 4, and then the mounting plate 31 drives the special-shaped grinding wheel 2 to move, thereby realizing the switching of the working surface, and the setting of the screw sleeve 16 can position the slider 14 after the slider 14 adjusts its position.

[0051] A slide rail 17 is fixedly provided inside the main body 1, and a slide bar 18 is slidingly provided inside the slide rail 17. The shell 10 is fixedly connected to the slide bar 18. A screw rod 19 is rotatably provided in any one of the slide rails 17. The screw rod 19 threadably passes through the slide bar 18. A motor is provided at one end of the slide rail 17. The motor is connected to the screw rod 19 for transmission. The shell 10 is driven to move through the screw rod 19, thereby realizing the feeding of the special-shaped grinding wheel 2, so that the special-shaped grinding wheel 2 moves to contact the surface of the rod.

[0052] A fixed cylinder 20 is fixedly provided on the inside of the main body 1, and a movable block 21 is slidably provided in the fixed cylinder 20. The air pressure sensor 6 is fixedly connected to the movable block 21. Air cylinders 22 are provided on both sides of the track 4. A piston 23 is slidably provided in the air cylinder 22. A spring 24 is provided at the bottom of the piston 23. The end of the spring 24 is fixedly connected to the bottom of the air cylinder 22. The top of the piston 23 extends into the track 4. The air cylinders 22 on both sides of the track 4 are respectively connected to the two ends of the fixed cylinder 20 through a hose. When the slider 14 moves to one end of the track 4, the slider 14 will squeeze the piston 23, and the piston 23 will move into the air cylinder 22, so that the air in the air cylinder 22 is transported to the fixed cylinder 20, and then The movable block 21 in the fixed cylinder 20 is pushed to move, and the movable block 21 drives the pneumatic sensor 6 to move. This design is because when the special-shaped grinding wheel 2 switches the working surface, it will rotate, which will cause the working surface originally facing the pneumatic sensor 6 to move. Therefore, through this arrangement, when the slider 14 drives the special-shaped grinding wheel 2 to move, the pneumatic sensor 6 will also move, and then detect the working surface where no grinding operation is performed, and an electric push rod 25 is fixedly set in the main body 1, and the grinding head 7 is set at the end of the electric push rod 25. When it is detected that the working surface of the special-shaped grinding wheel 2 is worn, the electric push rod 25 drives the grinding head 7 to move to grind the special-shaped grinding wheel 2.

[0053] In summary, the device achieves locking and positioning of the bar stock by fixing the chuck of the bar stock, and performs grinding operations using the special-shaped grinding wheel 2 movably arranged inside the main body 1. The special-shaped grinding wheel 2 includes a rough grinding working surface 12 and a fine grinding working surface 13. According to processing requirements, the working surface of the grinding wheel is switched by moving the transmission component 3 in the track 4. The transmission component 3 is driven by the drive motor 11, and the power distribution and transmission are realized through the transmission unit. The transmission ratio between the gears is adjusted to adapt to the different speed requirements of rough grinding and fine grinding. During the grinding process, the pneumatic sensor 6 monitors the wear of the grinding wheel in real time. Once wear is detected, the grinding head 7 is automatically started to repair the grinding wheel. At the same time, the automated feeding system in the device ensures that the grinding wheel can accurately and stably contact the surface of the bar stock, realizing efficient and precise grinding processing. The entire process realizes the automated conversion from rough grinding to fine grinding, as well as the real-time monitoring and compensation of grinding wheel wear, which greatly improves the processing efficiency and processing quality.

[0054] Example 2: Example 2 has the same structure as Example 1, except that the air source of the air pressure sensor 6 adopts compressed air. Through the compressed air source, the residue on the surface of the grinding wheel can be washed away without affecting the detection, so as to avoid affecting the subsequent grinding.

[0055] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0056] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A blank bar grinding device for bearing production, comprising a main body (1), a chuck for fixing the bar being provided on the main body (1), and characterized in that: Also included are: A special-shaped grinding wheel (2) is movably arranged inside the main body (1) and is used for grinding the bar material; A transmission assembly (3) is arranged inside the main body (1) and is capable of driving the special-shaped grinding wheel (2) to rotate; A track (4) is provided in the main body (1), and a transmission component (3) is movably provided in the track (4). When the transmission component (3) is located at different positions in the track (4), it can drive different working surfaces of the special-shaped grinding wheel (2) to grind the bar material; A driving component (5) is disposed in the main body (1) and is used to drive the transmission assembly (3) to rotate; A pneumatic sensor (6) is movably arranged in the main body (1) and is used to detect the wear state of the special-shaped grinding wheel (2); A grinding head (7) is movably arranged in the main body (1) and located on one side of the grinding wheel, and is used to grind the working surface of the grinding wheel; A housing (10) is provided in the main body (1), and the driving component (5) includes a driving motor (11) provided in the main body (1). The output end of the driving motor (11) is connected to a transmission unit 1 (8) and a transmission unit 2 (9). Both the transmission unit 1 (8) and the transmission unit 2 (9) are provided inside the housing (10), and the track (4) is fixedly provided at the bottom of the housing (10). The transmission unit 1 (8) includes a drive shaft (81) connected to the output end of the drive motor (11), and a drive bevel gear (82) is provided on the outside of the drive shaft (81); The second transmission unit (9) is provided with two transmission units (9) and is respectively located on both sides of the driving shaft (81). The second transmission unit (9) includes two synchronous shafts (91) rotatably provided in the housing (10). The outer sides of the synchronous shafts (91) are provided with transmission bevel gears (92) meshing with the driving bevel gear (82). Rotating shafts (93) are also rotatably provided on both sides of the housing (10). A driving gear (94) is fixedly provided on the outer side of the synchronous shaft (91). A driven gear (95) meshing with the driving gear (94) is provided on the outer side of the rotating shaft (93). A fixed shaft (96) is also rotatably provided in the housing (10). Synchronous gears (97) are provided on the outer sides of the fixed shaft (96) and the rotating shaft (93). The two synchronous gears (97) mesh with each other. The special-shaped grinding wheel (2) comprises three working surfaces, namely a rough grinding working surface (12) in the middle and fine grinding working surfaces (13) on both sides; The transmission assembly (3) includes a mounting plate (31) movably arranged in the track (4), a transmission shaft (32) being rotatably arranged on both the upper and lower sides of the mounting plate (31), a pulley being arranged on the outer side of each of the two transmission shafts (32), a belt being arranged on the outer side of the pulley, the two transmission shafts (32) being synchronously driven by the belt, the transmission shaft (32) at the bottom being connected to the special-shaped grinding wheel (2), and a connecting block (33) being arranged in the other transmission shaft (32) for transmission connection with the driving shaft (81) or the fixed shaft (96); A connecting block (33) is slidably provided on the transmission shaft (32); the ends of the driving shaft (81) and the fixed shaft (96) are provided with sockets for plugging and matching with the connecting block (33); a movable ring (34) fixedly connected to the connecting block (33) is provided on the outer side of the transmission shaft (32); and a connecting rod (35) is fixedly provided on the movable ring (34); A slider (14) is slidably provided in the track (4), the mounting plate (31) is fixedly connected to the slider (14), a locking screw (15) is fixedly provided on the back side of the slider (14), a screw sleeve (16) is provided on the outer thread of the locking screw (15), and a sliding groove for the locking screw (15) to slide is provided on the back side of the track (4).

2. The blank bar grinding device for bearing production according to claim 1, characterized in that: A slide rail (17) is fixedly provided inside the main body (1), a slide bar (18) is slidably provided inside the slide rail (17), the housing (10) is fixedly connected to the slide bar (18), a screw rod (19) is rotatably provided inside any one of the slide rails (17), the screw rod (19) is threadedly passed through the slide bar (18), a motor is provided at one end of the slide rail (17), and the motor is transmission-connected to the screw rod (19).

3. The blank bar grinding device for bearing production according to claim 1, characterized in that: A fixed cylinder (20) is fixedly provided inside the main body (1), a movable block (21) is slidably provided inside the fixed cylinder (20), a pneumatic sensor (6) is fixedly connected to the movable block (21), an air cylinder (22) is provided on both sides of the track (4), a piston (23) is slidably provided inside the air cylinder (22), a spring (24) is provided at the bottom of the piston (23), an end of the spring (24) is fixedly connected to the bottom of the air cylinder (22), a top end of the piston (23) extends into the track (4), and the air cylinders (22) on both sides of the track (4) are respectively connected to the two ends of the fixed cylinder (20) through hoses.

4. The blank bar grinding device for bearing production according to claim 1, characterized in that: An electric push rod (25) is fixedly arranged in the main body (1), and a grinding head (7) is arranged at the end of the electric push rod (25).

5. The blank bar grinding device for bearing production according to claim 1, characterized in that: The air source of the air pressure sensor (6) is compressed air.

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