A concave arc head grinding machine for needle roller ends

Abstract

This invention relates to the technical field of needle roller end grinding, and particularly to a concave arc head grinding machine for needle roller ends. The operator places neatly arranged needle rollers into a feeding device, which then feeds multiple sets of needle rollers into a clamping device. The clamping device clamps and fixes the middle of the needle rollers. The grinding device then grinds both ends of the needle rollers. After grinding, the clamping device releases the needle rollers, allowing them to fall. This process is repeated to grind other needle rollers, thereby improving the practicality of the equipment. The machine includes a frame, a grinding device, a feeding device, and a clamping device. The grinding device and clamping device are both mounted on the frame, and the feeding device is mounted on the grinding device. The feeding device conveys the needle rollers, the clamping device clamps and fixes the middle of the needle rollers, and the grinding device grinds both ends of the needle rollers.

Description

Technical Field

[0001] This invention relates to the technical field of grinding needle roller ends, and in particular to a grinding machine for the concave arc head of a needle roller end. Background Technology

[0002] Needle rollers refer to the rotating parts on needle roller bearings, mainly used in various types of bearings. Needle rollers require grinding during processing. For example, a batch grinding device for a needle roller production line is proposed in patent application number CN202210934944.0. This device mainly consists of grinding pestle devices and a drive unit. In use, the first and second motors on the drive unit are started. The first motor drives the central rotating drum to rotate via a side rotating rod-second gear-first gear. During the rotation of the drum, the top cover rotates, which in turn drives the surrounding grinding pestle devices to rotate, cooperating with the lower grinding device at the bottom to achieve the grinding effect of the needle rollers. Meanwhile, the grinding pestle device installed inside the top cover can rotate within the upper and lower bearings. That is, the grinding pestle can rotate while rotating with the top cover, directly avoiding jamming during the grinding process and uniformly grinding the needle rollers. However, some needle rollers have certain requirements for their ends during processing, requiring the ends to be ground into arc surfaces. But the needle rollers are relatively small, and it is difficult to grind both ends of multiple sets of needle rollers simultaneously with existing grinding equipment. This makes it inconvenient to apply to the production line of needle rollers, resulting in poor practicality. Therefore, it is necessary to improve the existing equipment. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a concave arc head grinding machine for needle rollers. Workers place neatly arranged needle rollers into a feeding device, which then feeds multiple sets of needle rollers into a clamping device. The clamping device clamps and fixes the middle of the needle rollers. A grinding device then grinds both ends of the needle rollers. After grinding, the clamping device releases the needle rollers, causing them to fall. This process is repeated to grind other needle rollers, thereby improving the practicality of the equipment.

[0004] The present invention provides a concave arc head grinding machine for the end of a needle roller, comprising a frame; and further comprising a grinding device, a feeding device, and a clamping device, wherein the grinding device and the clamping device are both mounted on the frame, and the feeding device is mounted on the grinding device;

[0005] The feeding device conveys the needle rollers, the clamping device clamps the middle part of the needle rollers to fix them, and the grinding device grinds both ends of the needle rollers.

[0006] Workers place the neatly arranged needle rollers into the feeding device, which then feeds multiple sets of needle rollers into the clamping device. The clamping device clamps and secures the needle rollers in the middle. The grinding device then grinds both ends of the needle rollers. After grinding, the clamping device releases the needle rollers, causing them to fall. The above steps are repeated to continue grinding other needle rollers, thereby improving the practicality of the equipment.

[0007] Preferably, the frame includes a base, a surrounding frame, multiple sets of support columns, and a top plate. The bottom ends of the surrounding frame and the multiple sets of support columns are connected to the top end of the base, and the top ends of the multiple sets of support columns are connected to the bottom end of the top plate. The grinding device and the clamping device are supported by the multiple sets of support columns, and the fallen needle rollers are collected by the surrounding frame, thereby improving the practicality of the equipment.

[0008] Preferably, the clamping device includes a grinding table, a turntable, and a first motor. The grinding table is fixedly mounted on multiple support columns by multiple sets of bolts. The grinding table has an internal cavity. The turntable is rotatably mounted inside the grinding table. The first motor is fixedly mounted at the bottom of the grinding table, and the output shaft of the first motor is connected to the bottom of the turntable. The top of both the grinding table and the turntable has multiple sets of through holes, the size of which is adapted to the size of the needle rollers to be ground. The through holes on the grinding table correspond to the through holes on the turntable, and the top and bottom of the through holes on the grinding table are provided with inclined surfaces. The grinding device blocks the bottom through holes of the grinding table, and the feeding device places multiple sets of needle rollers one by one into the multiple sets of through holes of the grinding table. By turning on the first motor, the turntable is driven to rotate, so that the turntable cooperates with the grinding table to clamp the needle rollers, thereby improving the stability of the needle rollers.

[0009] Preferably, the grinding device includes two sets of drive mechanisms and multiple sets of concave arc grinding heads. Both sets of drive mechanisms are mounted on the frame, and the multiple sets of concave arc grinding heads are fixedly mounted on the two sets of drive mechanisms. The positions of the multiple sets of concave arc grinding heads are adjusted by the two sets of drive mechanisms, so that the multiple sets of concave arc grinding heads extend into multiple sets of through holes on the grinding table. Then, the multiple sets of drive mechanisms drive the multiple sets of concave arc grinding heads to rotate, so that the multiple sets of concave arc grinding heads grind the two ends of multiple sets of needle rollers, thereby improving the practicality of the equipment.

[0010] Preferably, the drive mechanism includes multiple sets of hydraulic cylinders, a reduction gearbox, a second motor, and multiple sets of transmission shafts. The multiple sets of hydraulic cylinders on the two drive mechanisms are respectively fixedly mounted on the base and the top plate. The reduction gearboxes on both drive mechanisms are slidably mounted on multiple support columns, and are respectively mounted at the bottom end of the top set of hydraulic cylinders and the top end of the bottom set of hydraulic cylinders. The second motors on the two drive mechanisms are respectively mounted on the input ends of the reduction gearboxes of the two drive mechanisms. The multiple sets of transmission shafts on the two drive mechanisms are respectively mounted on the output ends of the reduction gearboxes of the two drive mechanisms. The multiple sets of concave arc grinding heads are respectively fixedly mounted on the multiple sets of transmission shafts. The multiple sets of hydraulic cylinders located at the bottom... The process involves extending multiple sets of concave arc grinding heads at the bottom into multiple sets of through holes on the grinding table. A feeding device then places the needle rollers one by one into these holes, allowing the bottom sets of concave arc grinding heads to support the needle rollers within. A clamping device then clamps the needle rollers. Finally, multiple sets of hydraulic cylinders at the top extend the top sets of concave arc grinding heads into the holes on the grinding table. By activating the second motors at the top and bottom, and through the gearboxes at the top and bottom, multiple drive shafts rotate the concave arc grinding heads, grinding both ends of the needle rollers and thus improving the equipment's practicality.

[0011] Preferably, the feeding device includes a rotating mechanism, a transverse mechanism, and a conveying mechanism. The rotating mechanism is installed on the side of the gearbox located at the top, the transverse mechanism is installed on the rotating mechanism, and the conveying mechanism is installed on the transverse mechanism. Multiple sets of needle rollers are vertically placed into the conveying mechanism. The height of the conveying mechanism is adjusted by extending or retracting multiple sets of hydraulic cylinders at the top. Then, the position of the conveying mechanism is adjusted laterally by the transverse mechanism, and the angle of the conveying mechanism is adjusted by the rotating mechanism, so that the conveying mechanism puts the needle rollers one by one into multiple sets of holes in the grinding table, thereby improving the practicality of the equipment.

[0012] Preferably, the rotating mechanism includes a support plate, a third motor, a rotating shaft, a first gear, a second gear, and a support frame. The side end of the support plate is connected to the side end of the gearbox located at the top. The bottom end of the third motor is connected to the top end of the support plate. The rotating shaft is rotatably mounted on the support plate. The bottom ends of the first gear and the second gear are respectively connected to the top ends of the third motor and the rotating shaft. The top end of the support frame is connected to the bottom end of the rotating shaft. The transverse mechanism is mounted on the support frame. When the third motor is turned on, the rotating shaft drives the conveying mechanism to rotate through the transmission of the first gear and the second gear, thereby adjusting the angle of the conveying mechanism and improving the practicality of the equipment.

[0013] Preferably, the lateral movement mechanism includes a guide frame, a fourth motor, and a third gear. The guide frame is slidably mounted on the bottom of the support frame, and the front end of the guide frame is provided with multiple sets of gear teeth. The side end of the fourth motor is connected to the side end of the support frame, the top end of the third gear is connected to the bottom end of the fourth motor, and the rear end of the third gear meshes with multiple sets of gear teeth on the guide frame. When the fourth motor is turned on, the guide frame slides on the support frame through the meshing transmission between the third gear and the gear teeth on the support frame, driving the conveying mechanism to move laterally, thereby improving the practicality of the equipment.

[0014] Preferably, the conveying mechanism includes a storage trough, a vibration motor, and a baffle. The storage trough is fixedly installed in the middle of the guide frame, and the bottom of the storage trough is an inclined surface. A discharge port is provided at the bottom end of the storage trough. The vibration motor is installed on the storage trough, and the baffle is slidably installed on the storage trough to block the discharge port of the storage trough. Multiple sets of needle rollers are vertically placed into the storage trough so that the needle rollers are arranged in a row. When discharging, the bottom end of the storage trough is flat against the top of the grinding table, the baffle is pulled out, the vibration motor is turned on to make the storage trough vibrate, and then the rotation mechanism cooperates with the transverse mechanism to adjust the position of the discharge port of the storage trough, and the needle rollers are placed one by one into multiple sets of holes in the grinding table, thereby improving the practicality of the equipment.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The clamping device is automatically fed by the feeding device, which improves the automation of the equipment;

[0016] 2. The grinding device and clamping device are used to fix and grind the needle rollers, and then the clamping device and grinding device are used to reset the rollers to complete the material discharge.

[0017] 3. Simultaneously grind both ends of multiple sets of needle rollers, and supplement the feeding device with needle rollers during the grinding process to improve the production efficiency of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the isometric structure of the present invention;

[0019] Figure 2 This is a front view structural diagram of the present invention;

[0020] Figure 3 This is an enlarged isometric view of the feeding device of the present invention;

[0021] Figure 4 This is a front view enlarged structural schematic diagram of the feeding device of the present invention;

[0022] Figure 5 This is an exploded structural diagram of the clamping device of the present invention;

[0023] Figure 6 This is a front view enlarged cross-sectional structural schematic diagram of the grinding table of the present invention;

[0024] The following components are marked in the attached diagram: 1. Base; 2. Frame; 3. Support column; 4. Top plate; 5. Grinding table; 6. Turntable; 7. First motor; 8. Concave arc grinding head; 9. Hydraulic cylinder; 10. Gearbox; 11. Second motor; 12. Drive shaft; 13. Support plate; 14. Third motor; 15. Rotating shaft; 16. First gear; 17. Second gear; 18. Support frame; 19. Guide frame; 20. Fourth motor; 21. Third gear; 22. Storage trough; 23. Vibration motor; 24. Baffle. Detailed Implementation

[0025] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0026] Example 1

[0027] like Figure 1 and Figure 2 As shown, the grinding device and clamping device are both mounted on the frame, and the feeding device is mounted on the grinding device;

[0028] The feeding device conveys the needle rollers, the clamping device clamps the middle part of the needle rollers to fix them, and the grinding device grinds both ends of the needle rollers.

[0029] like Figure 1 As shown, the frame includes a base 1, a surrounding frame 2, multiple sets of support columns 3 and a top plate 4. The bottom ends of the surrounding frame 2 and the multiple sets of support columns 3 are connected to the top end of the base 1, and the top ends of the multiple sets of support columns 3 are connected to the bottom end of the top plate 4.

[0030] like Figure 5 and Figure 6 As shown, the clamping device includes a grinding table 5, a turntable 6, and a first motor 7. The grinding table 5 is fixedly installed on multiple sets of support columns 3 by multiple sets of bolts. The grinding table 5 has a cavity inside. The turntable 6 is rotatably installed inside the grinding table 5. The first motor 7 is fixedly installed at the bottom end of the grinding table 5. The output shaft of the first motor 7 is connected to the bottom end of the turntable 6. The top ends of both the grinding table 5 and the turntable 6 are provided with multiple sets of through holes. The size of the multiple sets of through holes is adapted to the size of the needle rollers to be ground. The through holes on the grinding table 5 correspond to the through holes on the turntable 6. The top and bottom of the through holes on the grinding table 5 are provided with inclined surfaces.

[0031] Workers place the neatly arranged needle rollers into the feeding device. The bottom perforation of the grinding table 5 is blocked by the grinding device. Multiple sets of needle rollers are placed one by one into the multiple perforations of the grinding table 5 through the feeding device. The first motor 7 is turned on to drive the turntable 6 to rotate, so that the turntable 6 and the grinding table 5 clamp the needle rollers. Then, the two ends of the needle rollers are ground by the grinding device. After grinding is completed, the needle rollers are released by the clamping device and fall off. The above steps are repeated to continue grinding other needle rollers, thereby improving the practicality of the equipment.

[0032] Example 2

[0033] like Figure 1 and Figure 2 As shown, the grinding device and clamping device are both mounted on the frame, and the feeding device is mounted on the grinding device;

[0034] The feeding device conveys the needle rollers, the clamping device clamps the middle part of the needle rollers to fix them, and the grinding device grinds both ends of the needle rollers.

[0035] like Figure 1 As shown, the frame includes a base 1, a surrounding frame 2, multiple sets of support columns 3 and a top plate 4. The bottom ends of the surrounding frame 2 and the multiple sets of support columns 3 are connected to the top end of the base 1, and the top ends of the multiple sets of support columns 3 are connected to the bottom end of the top plate 4.

[0036] like Figure 5 and Figure 6 As shown, the clamping device includes a grinding table 5, a turntable 6, and a first motor 7. The grinding table 5 is fixedly installed on multiple sets of support columns 3 by multiple sets of bolts. The grinding table 5 has a cavity inside. The turntable 6 is rotatably installed inside the grinding table 5. The first motor 7 is fixedly installed at the bottom end of the grinding table 5. The output shaft of the first motor 7 is connected to the bottom end of the turntable 6. The top ends of both the grinding table 5 and the turntable 6 are provided with multiple sets of through holes. The size of the multiple sets of through holes is adapted to the size of the needle rollers to be ground. The through holes on the grinding table 5 correspond to the through holes on the turntable 6. The top and bottom of the through holes on the grinding table 5 are provided with inclined surfaces.

[0037] like Figure 2 As shown, the grinding device includes two sets of drive mechanisms and multiple sets of concave arc grinding heads 8. Both sets of drive mechanisms are mounted on the frame, and the multiple sets of concave arc grinding heads 8 are respectively fixedly mounted on the two sets of drive mechanisms.

[0038] like Figure 2As shown, the drive mechanism includes multiple sets of hydraulic cylinders 9, a reduction gearbox 10, a second motor 11, and multiple sets of transmission shafts 12. The multiple sets of hydraulic cylinders 9 on the two drive mechanisms are respectively fixedly installed on the base 1 and the top plate 4. The reduction gearboxes 10 on the two drive mechanisms are slidably installed on multiple sets of support columns 3. The reduction gearboxes 10 on the two drive mechanisms are respectively installed at the bottom end of the top set of hydraulic cylinders 9 and the top end of the bottom set of hydraulic cylinders 9. The second motors 11 on the two drive mechanisms are respectively installed on the input end of the reduction gearboxes 10 on the two drive mechanisms. The multiple sets of transmission shafts 12 on the two drive mechanisms are respectively installed on the output end of the reduction gearboxes 10 on the two drive mechanisms. The multiple sets of concave arc grinding heads 8 are respectively fixedly installed on the multiple sets of transmission shafts 12.

[0039] Workers place the neatly arranged needle rollers into the feeding device. Multiple sets of hydraulic cylinders 9 at the bottom extend, causing multiple sets of concave-arc grinding heads 8 to extend into multiple through-holes in the grinding table 5. The feeding device then places the needle rollers one by one into the through-holes of the grinding table 5. The first motor 7 is activated, driving the turntable 6 to rotate, clamping the needle rollers with the grinding table 5. Then, multiple sets of hydraulic cylinders 9 at the top extend, causing multiple sets of concave-arc grinding heads 8 to extend into the through-holes of the grinding table 5. The second motors 11 at the top and bottom are activated, and through the reduction gearboxes 10 at the top and bottom, multiple drive shafts 12 drive the concave-arc grinding heads 8 to rotate. The concave-arc grinding heads 8 grind both ends of the needle rollers. After grinding, the clamping device releases the needle rollers, causing them to fall. The above steps are repeated to continue grinding other needle rollers, thereby improving the equipment's practicality.

[0040] like Figures 1 to 6As shown, the present invention discloses a concave arc head grinding machine for needle roller ends. During operation, the operator first vertically inserts multiple sets of needle rollers into the storage tank 22, arranging them in a row. Multiple sets of hydraulic cylinders 9 at the bottom extend, causing multiple sets of concave arc grinding heads 8 at the bottom to extend into multiple sets of through holes in the grinding table 5. Multiple sets of hydraulic cylinders 9 at the top extend or retract, bringing the bottom of the storage tank 22 flat against the top of the grinding table 5. The baffle 24 is then removed, and the vibration motor 23 is turned on to vibrate the storage tank 22. Next, the third motor 14 is turned on, driving the rotating shaft 15 to rotate via the first gear 16 and the second gear 17, adjusting the angle of the storage tank 22. Finally, the fourth motor 20 is turned on, driving the guide frame 18 via the meshing of the third gear 21 with the gear teeth on the support frame 18. The sliding motion of the roller on the support frame 18 drives the storage tank 22 to move laterally, placing the rollers one by one into the multiple sets of holes in the grinding table 5. By turning on the first motor 7, the turntable 6 is driven to rotate, so that the turntable 6 and the grinding table 5 clamp the rollers. Then, the multiple sets of hydraulic cylinders 9 located at the top extend, so that the multiple sets of concave arc grinding heads 8 located at the top are inserted into the multiple sets of holes in the grinding table 5 respectively. By turning on the second motors 11 located at the top and bottom, the multiple sets of transmission shafts 12 drive the multiple sets of concave arc grinding heads 8 to rotate through the reduction gearboxes 10 located at the top and bottom. The multiple sets of concave arc grinding heads 8 grind the two ends of the rollers. After grinding, the rollers are released by the clamping device, so that the rollers fall into the frame 2. The above steps are repeated to continue grinding the other rollers.

[0041] The main functions achieved by this invention are: automatic feeding, simultaneous fixing and grinding of multiple sets of needle rollers, and automatic material discharge;

[0042] 1. Automatic feeding: The feeding device, in conjunction with the clamping device and the grinding device, puts multiple sets of needle rollers into the clamping device, so that the clamping device fixes the multiple sets of needle rollers.

[0043] 2. Simultaneously fix and grind multiple sets of needle rollers. Multiple sets of needle rollers are fixed at the same time by a clamping device, and then the two ends of multiple sets of needle rollers are ground at the same time by multiple sets of concave arc grinding heads 8.

[0044] 3. Automatic material discharge: The grinding needle rollers fall into the frame 2 after being ground by the clamping device and the grinding device.

[0045] The first motor 7, concave arc grinding head 8, hydraulic cylinder 9, reduction gearbox 10, second motor 11, third motor 14 and fourth motor 20 of the concave arc head grinding machine of the needle roller end of the present invention are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0046] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A grinding machine for the concave arc head of a needle roller, comprising a frame; characterized in that, It also includes a grinding device, a feeding device and a clamping device. The grinding device and the clamping device are both mounted on the frame, and the feeding device is mounted on the grinding device. The feeding device conveys the needle rollers, the clamping device clamps the middle part of the needle rollers to fix them, and the grinding device grinds both ends of the needle rollers. The frame includes a base (1), a frame (2), multiple sets of support columns (3) and a top plate (4). The bottom ends of the frame (2) and the multiple sets of support columns (3) are connected to the top end of the base (1), and the top ends of the multiple sets of support columns (3) are connected to the bottom end of the top plate (4). The clamping device includes a grinding table (5), a turntable (6) and a first motor (7). The grinding table (5) is fixedly installed on multiple sets of support columns (3) by multiple sets of bolts. The grinding table (5) has a cavity inside. The turntable (6) is rotatably installed inside the grinding table (5). The first motor (7) is fixedly installed at the bottom of the grinding table (5). The output shaft of the first motor (7) is connected to the bottom of the turntable (6). The top of the grinding table (5) and the turntable (6) are provided with multiple sets of through holes. The size of the multiple sets of through holes is adapted to the size of the roller needle to be ground. The through holes on the grinding table (5) correspond to the through holes on the turntable (6). The top and bottom of the through holes on the grinding table (5) are provided with inclined surfaces. The grinding device includes two sets of drive mechanisms and multiple sets of concave arc grinding heads (8). Both sets of drive mechanisms are mounted on the frame, and the multiple sets of concave arc grinding heads (8) are fixedly mounted on the two sets of drive mechanisms respectively. The drive mechanism includes multiple sets of hydraulic cylinders (9), a reduction gearbox (10), a second motor (11), and multiple sets of transmission shafts (12). The multiple sets of hydraulic cylinders (9) on the two drive mechanisms are fixedly installed on the base (1) and the top plate (4), respectively. The reduction gearboxes (10) on the two drive mechanisms are slidably installed on multiple sets of support columns (3). The reduction gearboxes (10) on the two drive mechanisms are respectively installed at the bottom end of the top set of hydraulic cylinders (9) and the top end of the bottom set of hydraulic cylinders (9). The second motors (11) on the two drive mechanisms are respectively installed on the input end of the reduction gearboxes (10) of the two drive mechanisms. The multiple sets of transmission shafts (12) on the two drive mechanisms are respectively installed on the output end of the reduction gearboxes (10) of the two drive mechanisms. The multiple sets of concave arc grinding heads (8) are respectively fixedly installed on the multiple sets of transmission shafts (12). The feeding device includes a rotating mechanism, a transverse mechanism, and a conveying mechanism. The rotating mechanism is installed on the side of the gearbox (10) located at the top, the transverse mechanism is installed on the rotating mechanism, and the conveying mechanism is installed on the transverse mechanism.

2. The concave arc head grinding machine for the end of a needle roller as described in claim 1, characterized in that, The rotating mechanism includes a support plate (13), a third motor (14), a rotating shaft (15), a first gear (16), a second gear (17), and a support frame (18). The side end of the support plate (13) is connected to the side end of the gearbox (10) located at the top. The bottom end of the third motor (14) is connected to the top end of the support plate (13). The rotating shaft (15) is rotatably mounted on the support plate (13). The bottom ends of the first gear (16) and the second gear (17) are respectively connected to the top ends of the third motor (14) and the rotating shaft (15). The top end of the support frame (18) is connected to the bottom end of the rotating shaft (15). The transverse mechanism is mounted on the support frame (18).

3. The concave arc head grinding machine for the end of a needle roller as described in claim 2, characterized in that, The traversing mechanism includes a guide frame (19), a fourth motor (20), and a third gear (21). The guide frame (19) is slidably mounted on the bottom of the support frame (18), and the front end of the guide frame (19) is provided with multiple sets of gear teeth. The side end of the fourth motor (20) is connected to the side end of the support frame (18), the top end of the third gear (21) is connected to the bottom end of the fourth motor (20), and the rear end of the third gear (21) is meshed with multiple sets of gear teeth on the guide frame (19).

4. The concave arc head grinding machine for the end of a needle roller as described in claim 3, characterized in that, The conveying mechanism includes a storage tank (22), a vibration motor (23), and a baffle (24). The storage tank (22) is fixedly installed in the middle of the guide frame (19), and the bottom of the storage tank (22) is an inclined surface. A discharge port is provided at the bottom of the storage tank (22). The vibration motor (23) is installed on the storage tank (22), and the baffle (24) is slidably installed on the storage tank (22) to block the discharge port of the storage tank (22).

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