A second-stage precision grinding device for machining rear bearing sleeves

Abstract

This utility model belongs to the field of rear bearing sleeve processing technology, specifically relating to a secondary fine grinding device for rear bearing sleeve processing. It includes a rotating support mechanism and corresponding pressing and stabilizing mechanisms above and below it. The rotating support mechanism is mounted on a support base, and the pressing and stabilizing mechanism is mounted on a support frame. The support frame is fixed to the support base. A fine grinding wheel is correspondingly provided on the rotating support mechanism. The fine grinding wheel is equipped with a driving mechanism and an adjusting mechanism for adjusting the displacement of the fine grinding wheel. This utility model uses a downward-pressing electric push rod on the pressing and stabilizing mechanism to adjust the downward movement of the lifting and pulling plate, causing the downward-pressing stabilizing shaft to form a stabilizing effect with the free end of the inner sleeve sliding plate. Simultaneously, the continuous extension of the downward-pressing electric push rod causes the pressing ring to descend and press and fix the rear bearing sleeve sleeved on the four inner support sliding plates. This creates a pressing and locking effect on the rear bearing sleeve, improving stability during rotary fine grinding and enhancing the fine grinding effect.

Description

Technical Field

[0001] This utility model belongs to the field of rear bearing sleeve processing technology, specifically relating to a second-stage precision grinding device for rear bearing sleeve processing. Background Technology

[0002] The main purpose of the second fine grinding of the rear bearing sleeve is to improve machining accuracy and surface quality. Through the second fine grinding, surface roughness can be further reduced, and dimensional and shape accuracy can be improved, thereby ensuring the performance and life of the bearing.

[0003] Specifically, secondary fine grinding, through further processing, reduces the depth of the uneven layer on the surface of the part, improving its uniformity and thus meeting the requirements of polishing for the surface structure and shape of the part. Furthermore, secondary fine grinding can also improve the surface accuracy and related dimensional accuracy of the part, ensuring the quality of the final product. Currently, before processing the rear bearing sleeve, it needs to be clamped. Therefore, the clamping mechanism needs to have a free end to facilitate the placement of the rear bearing sleeve for fine grinding.

[0004] Problems with existing technology:

[0005] After the rear bearing sleeve is clamped in the above manner, the free end of the clamping mechanism is in a free rotation state during rotation. When the rear bearing sleeve is being finely ground, the free end is prone to centrifugal displacement on the side carrying the rear bearing sleeve due to the centrifugal force of rotation. This causes deviation during the fine grinding of the rear bearing sleeve surface and reduces the fine grinding quality of the rear bearing sleeve. Utility Model Content

[0006] The purpose of this invention is to provide a second-stage precision grinding device for machining rear bearing sleeves, which can solve the above-mentioned technical problems.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] This utility model provides a second-stage fine grinding device for processing rear bearing sleeves, including a rotating support mechanism and corresponding pressing and stabilizing mechanisms above and below it. The rotating support mechanism is set on a support base, and the pressing and stabilizing mechanisms are set on a support frame. The support frame is fixed on the support base. The rotating support mechanism is correspondingly provided with a fine grinding wheel, and the fine grinding wheel is provided with a driving mechanism and an adjusting mechanism.

[0009] The rotary support mechanism includes a connecting rotary shaft and a supporting rotary shaft. A rotary drive motor is provided on the bottom surface of the support base. The output shaft of the rotary drive motor is connected to the lower side of the connecting rotary shaft. The upper side of the connecting rotary shaft is rotatably engaged with the support base. The bottom surface of the support base is provided with a meshing drive gear and a driven gear. The drive gear is provided on the connecting rotary shaft, and the driven gear is provided on the supporting rotary shaft. The supporting rotary shaft is rotatably engaged with the support base. A rotary tray is fixed on the outer periphery of the upper side of the supporting rotary shaft. Both the rotary tray and the supporting rotary shaft are connected to a clamping mechanism.

[0010] The pressing and stabilizing mechanism includes a stabilizing sleeve, and a downward pressing and stabilizing shaft is sleeved on the support frame. The downward pressing and stabilizing shaft is sleeved inside the stabilizing sleeve, and the downward pressing and stabilizing shaft corresponds vertically to the support and locking mechanism.

[0011] Using the aforementioned secondary precision grinding device for rear bearing sleeve processing, the rear bearing sleeve is placed on the rotating tray of the rotating support mechanism and simultaneously fitted onto the clamping mechanism. Then, by controlling an external switch, the downward electric push rod on the pressing and stabilizing mechanism extends. The downward electric push rod drives the lifting and pulling plate to descend, while simultaneously pushing the downward stabilizing shaft to slide down along the support frame, causing the downward stabilizing shaft to move down and insert into the connecting ring. At the same time, as the downward stabilizing shaft continues to move down, it pushes the inner sleeve sliding plate down along the support rotating shaft, while simultaneously driving the push-pull plate to push the inner support translation plate away from the inner sleeve sliding plate, thereby tightening and fixing the inner side of the rear bearing shaft.

[0012] Then, as the downward-pressing electric push rod continues to extend, it drives the rotating plate to move downward and causes the stabilizing sleeve to compress the buffer spring. At the same time, the rotating plate causes the pressing ring on the fixed plate to descend and contact the upper surface of the rear bearing sleeve. This creates a clamping effect on the rear bearing sleeve, allowing it to rotate stably when the rotating motor drives the support rotating shaft, thereby improving the fine grinding effect on the rear bearing sleeve.

[0013] Preferably, the support mechanism includes an inner sliding plate sleeved within the supporting rotating shaft. The upper surface of the inner sliding plate is rotatably engaged with a connecting ring. The connecting ring is adapted to the downward pressing and stabilizing shaft. Four centrally symmetrically distributed inner support translation plates are provided above the rotating tray. The four inner support translation plates correspond to the upper four sides of the inner sliding plate. A buffer spring is sleeved on the downward pressing and stabilizing shaft. A fixing ring is fixedly provided on the lower side of the downward pressing and stabilizing shaft. The upper side of the buffer spring is fixedly connected to the bottom surface of the stabilizing sliding sleeve, and the lower side of the buffer spring is fixedly connected to the fixing ring.

[0014] Preferably, the inner support sliding plate and the inner sleeve sliding plate are provided with two symmetrical push plates on their opposite sides. The opposite sides of the two push plates are hinged to the push-pull plate. The upper side of the upper push plate is hinged to the side of the inner sleeve sliding plate, and the lower side of the lower push plate is hinged to the rotating tray.

[0015] Preferably, a retractable pull plate is provided below the supporting rotating shaft. The retractable pull plate is fixed to the lower side of the inner sleeve sliding plate. A retractable spring is sleeved on the inner sleeve sliding plate. The upper side of the retractable spring is fixedly connected to the bottom surface of the supporting rotating shaft, and the lower side of the retractable spring is fixedly connected to the retractable pull plate.

[0016] Preferably, a pressing ring and a lifting and sliding plate are provided above the rotating tray. The lifting and sliding plate is rotatably engaged with the stabilizing sleeve. Two guide shafts are sleeved on the support frame. The lower sides of the two guide shafts are fixedly connected to the lifting and sliding plate. A downward electric push rod is provided on the support frame. The extended end of the downward electric push rod is fixedly connected to the lifting and sliding plate through a connecting plate.

[0017] Preferably, two fixing plates are symmetrically fixed on the pressing ring, and a rotating plate is rotatably mounted on the stabilizing sleeve, with both fixing plates fixedly connected to the rotating plate.

[0018] Preferably, the drive mechanism includes a fine grinding drive motor and a pulley assembly connected thereto. The pulley assembly is located below and connected to the fine grinding wheel. The adjustment mechanism includes an adjusting threaded rod and a sliding stabilizing frame. The support frame is threadedly engaged with the adjusting threaded rod and slidably engaged with the sliding stabilizing frame. The fine grinding wheel is mounted on the sliding stabilizing frame and is horizontally aligned with the inner support translation plate.

[0019] The beneficial effects are:

[0020] This invention uses a pressing and stabilizing mechanism to adjust the downward movement of the lifting and pulling plate via a downward electric push rod. Simultaneously, this causes the downward stabilizing shaft to descend and engage with the connecting ring on the inner sliding plate. This presses down the inner sliding plate, causing the four inner support sliding plates to expand and tighten the rear bearing sleeve. The stabilizing effect is achieved through the connection between the downward stabilizing shaft and the free end of the inner sliding plate. Furthermore, the continuous extension of the downward electric push rod causes the pressing ring to descend and press and fix the rear bearing sleeve, which is fitted onto the four inner support sliding plates. This creates a pressing and locking effect on the rear bearing sleeve, improving stability during rotational fine grinding and enhancing the grinding effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 2 This is a bottom view structural diagram of this utility model;

[0023] Figure 3 This is a schematic diagram of the rotating support mechanism in this utility model;

[0024] Figure 4 This is a schematic diagram of the support mechanism in this utility model;

[0025] Figure 5 This is a schematic diagram of the pressing and stabilizing mechanism in this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Support base; 2. Rotary support mechanism; 21. Rotary drive motor; 22. Connecting rotating shaft; 23. Drive gear; 24. Rotating tray; 25. Supporting rotating shaft; 26. Driven gear; 27. Supporting mechanism; 271. Inner sliding plate; 272. Inner support translation plate; 273. Back thrust plate; 274. Connecting ring; 275. Retraction spring; 276. Retraction pull plate; 3. Support frame; 4. Pressing and stabilizing mechanism; 401. Lifting push-pull plate; 402. Stabilizing sleeve; 403. Downward stabilizing shaft; 404. Guide rail shaft; 405. Downward electric push rod; 406. Connecting plate; 407. Rotating plate; 408. Fixed plate; 409. Pressing ring; 410. Buffer spring; 411. Fixed ring; 5. Precision grinding wheel; 6. Adjusting threaded rod; 7. Sliding stabilizing frame; 8. Pulley assembly; 9. Precision grinding drive motor. Detailed Implementation

[0028] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0029] like Figure 1-5 As shown, a second-stage fine grinding device for processing rear bearing sleeves includes a rotary support mechanism 2 and a pressing and stabilizing mechanism 4 corresponding to its upper and lower parts. The rotary support mechanism 2 is set on a support base 1, and the pressing and stabilizing mechanism 4 is set on a support frame 3. The support frame 3 is fixed on the support base 1. The rotary support mechanism 2 is provided with a fine grinding wheel 5, and the fine grinding wheel 5 is provided with a driving mechanism and an adjusting mechanism.

[0030] The rotating support mechanism 2 includes a connecting rotating shaft 22 and a supporting rotating shaft 25. A rotating drive motor 21 is provided on the bottom surface of the support base 1. The output shaft of the rotating drive motor 21 is connected to the lower side of the connecting rotating shaft 22. The upper side of the connecting rotating shaft 22 is rotatably engaged with the support base 1. The bottom surface of the support base 1 is provided with a driving gear 23 and a driven gear 26 that mesh with each other. The driving gear 23 is provided on the connecting rotating shaft 22, and the driven gear 26 is provided on the supporting rotating shaft 25. The supporting rotating shaft 25 is rotatably engaged with the support base 1. A rotating tray 24 is fixedly provided on the outer periphery of the upper side of the supporting rotating shaft 25. Both the rotating tray 24 and the supporting rotating shaft 25 are connected to the clamping mechanism 27.

[0031] The pressing and stabilizing mechanism 4 includes a stabilizing sleeve 402, and a pressing and stabilizing shaft 403 is sleeved on the support frame 3. The pressing and stabilizing shaft 403 is sleeved inside the stabilizing sleeve 402, and the pressing and stabilizing shaft 403 corresponds vertically to the support and locking mechanism 27.

[0032] As an optional implementation, the clamping mechanism 27 includes an inner sliding plate 271 sleeved inside the supporting rotating shaft 25. The upper surface of the inner sliding plate 271 is rotatably engaged with the connecting ring 274. The connecting ring 274 is adapted to the downward pressing and stabilizing shaft 403. Four centrally symmetrically distributed inner support translation plates 272 are provided above the rotating tray 24. The four inner support translation plates 272 correspond to the upper four sides of the inner sliding plate 271 respectively. A buffer spring 410 is sleeved on the downward pressing and stabilizing shaft 403. A fixing ring 411 is fixedly provided on the lower side of the downward pressing and stabilizing shaft 403. The upper side of the buffer spring 410 is fixedly connected to the bottom surface of the stabilizing sleeve 402, and the lower side of the buffer spring 410 is fixedly connected to the fixing ring 411. With this arrangement, the downward pressing and stabilizing shaft 403 and the connecting ring 274 can form a clamping and stabilizing connection with the inner sliding plate 271. Then, the inner support translation plates 272 are used to tighten and fix the rear bearing sleeve, thereby improving the fixing effect of the rear bearing sleeve.

[0033] See attached document Figure 4 The inner support sliding plate 272 and the inner sleeve sliding plate 271 are provided with two symmetrical upper and lower push plates 273 on their opposite sides. The opposite sides of the two push plates 273 are hinged to the push-pull plate. The upper side of the upper push plate 273 is hinged to the side of the inner sleeve sliding plate 271, and the lower side of the lower push plate 273 is hinged to the rotating tray 24. With this arrangement, the upper and lower movement of the inner sleeve sliding plate 271 can drive the push plates 273 to push the inner support sliding plate 272 to adjust its contraction and expansion, thereby facilitating the tightening and fixing of the rear bearing sleeve fitted on the inner support sliding plate 272.

[0034] Furthermore, a retractable pull plate 276 is provided below the supporting rotating shaft 25. The retractable pull plate 276 is fixed to the lower side of the inner sleeve sliding plate 271. A retraction spring 275 is sleeved on the inner sleeve sliding plate 271. The upper side of the retraction spring 275 is fixedly connected to the bottom surface of the supporting rotating shaft 25, and the lower side of the retraction spring 275 is fixedly connected to the retractable pull plate 276. With this arrangement, when the downward electric push rod 405 retracts, the retraction spring 275, which is in the downward pushing and stretching state, retracts and drives the inner sleeve sliding plate 271 to slide upward, thereby driving the four inner support translation plates 272 to retract. This releases the tight fixation of the rear bearing sleeve, making it easier to remove the rear bearing sleeve.

[0035] See attached document Figure 5 Above the rotating tray 24, there is a pressing ring 409 and a lifting push-pull plate 401. The lifting push-pull plate 401 is rotatably engaged with the stabilizing sleeve 402. Two guide shafts 404 are sleeved on the support frame 3. The lower sides of the two guide shafts 404 are fixedly connected to the lifting push-pull plate 401. A downward electric push rod 405 is provided on the support frame 3. The extended end of the downward electric push rod 405 is fixedly connected to the lifting push-pull plate 401 through a connecting plate 406. With this arrangement, when the downward electric push rod 405 extends and pushes the lifting push-pull plate 401 downward, the downward trajectory is limited by the guide shafts 404, thereby providing sliding support for the downward stabilizing shaft 403 and improving the stability of the downward stabilizing shaft 403.

[0036] Furthermore, two fixed plates 408 are symmetrically fixed on the pressing ring 409, and a rotating plate 407 is rotatably mounted on the stabilizing sleeve 402. Both fixed plates 408 are fixedly connected to the rotating plate 407. This arrangement allows the pressing ring 409 to move synchronously by relying on the rotating plate 407. At the same time, when the pressing ring 409 rotates, it drives the fixed rotating plate 407 to rotate synchronously, thus not affecting the precision rotation of the rear bearing sleeve.

[0037] Furthermore, the drive mechanism includes a fine grinding drive motor 9 and a pulley set 8 connected thereto. The pulley set 8 is located below and connected to the fine grinding wheel 5. The adjustment mechanism includes an adjusting threaded rod 6 and a sliding stabilizing frame 7. The support frame 3 is threadedly engaged with the adjusting threaded rod 6 and slidably engaged with the sliding stabilizing frame 7. The fine grinding wheel 5 is mounted on the sliding stabilizing frame 7 and is horizontally aligned with the inner support translation plate 272. With this configuration, the adjusting threaded rod 6 can be rotated, thereby driving the sliding stabilizing component to move. At the same time, the sliding stabilizing frame 7 drives the fine grinding wheel 5 to move synchronously, thereby adjusting the position of the fine grinding wheel 5 and achieving the effect of adjusting the fine grinding thickness.

[0038] Using the above structure, the rear bearing sleeve is placed on the rotating tray 24 on the rotating support mechanism 2 and simultaneously fitted onto the support mechanism 27. Then, the downward electric push rod 405 on the pressing and stabilizing mechanism 4 is extended by controlling the external switch. The downward electric push rod 405 drives the lifting push-pull plate 401 to descend, and at the same time pushes the downward stabilizing shaft 403 to slide down along the support frame 3, so that the downward stabilizing shaft 403 moves down and inserts into the connecting ring 274. At the same time, as the downward stabilizing shaft 403 continues to move down, it pushes the inner sleeve sliding plate 271 to move down along the support rotating shaft 25, and at the same time drives the push-pull plate to push the inner support translation plate 272 away from the inner sleeve sliding plate 271, thereby tightening and fixing the inner side of the rear bearing shaft.

[0039] Then, as the downward-pressing electric push rod 405 continues to extend, it drives the rotating plate 407 to move downward and causes the stabilizing sleeve 402 to squeeze the buffer spring 410. At the same time, the rotating plate 407 drives the pressing ring 409 on the fixed plate 408 to descend and contact the upper surface of the rear bearing sleeve. This creates a clamping effect on the rear bearing sleeve, so that when the rotary motor drives the supporting rotating shaft 25 to rotate, the supporting rotating shaft 25 drives the clamped rear bearing sleeve on the rotating tray 24 to rotate stably, thereby improving the fine grinding effect on the rear bearing sleeve.

[0040] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A second-stage precision grinding device for machining rear bearing sleeves, characterized in that: It includes a rotating support mechanism (2) and a pressing and stabilizing mechanism (4) corresponding to its upper and lower parts. The rotating support mechanism (2) is set on the support base (1), and the pressing and stabilizing mechanism (4) is set on the support frame (3). The support frame (3) is fixed on the support base (1). The rotating support mechanism (2) is provided with a fine grinding wheel (5). The fine grinding wheel (5) is provided with a driving mechanism and an adjusting mechanism. The rotating support mechanism (2) includes a connecting rotating shaft (22) and a supporting rotating shaft (25). A rotating drive motor (21) is provided on the bottom surface of the support base (1). The output shaft of the rotating drive motor (21) is connected to the lower side of the connecting rotating shaft (22). The upper side of the connecting rotating shaft (22) is rotatably engaged with the support base (1). The bottom surface of the support base (1) is provided with a driving gear (23) and a driven gear (26) that mesh with each other. The driving gear (23) is provided on the connecting rotating shaft (22). The driven gear (26) is provided on the supporting rotating shaft (25). The supporting rotating shaft (25) is rotatably engaged with the support base (1). A rotating tray (24) is fixedly provided on the outer periphery of the upper side of the supporting rotating shaft (25). Both the rotating tray (24) and the supporting rotating shaft (25) are connected to the support clamping mechanism (27). The pressing and stabilizing mechanism (4) includes a stabilizing sleeve (402), and a pressing and stabilizing shaft (403) is sleeved on the support frame (3). The pressing and stabilizing shaft (403) is sleeved inside the stabilizing sleeve (402), and the pressing and stabilizing shaft (403) corresponds vertically to the support and locking mechanism (27).

2. The second-stage precision grinding device for machining rear bearing sleeves according to claim 1, characterized in that: The support mechanism (27) includes an inner sliding plate (271) sleeved in the support rotating shaft (25). The upper surface of the inner sliding plate (271) is rotatably engaged with the connecting ring (274). The connecting ring (274) is adapted to the downward pressing and stabilizing shaft (403). Four centrally symmetrical inner support translation plates (272) are provided above the rotating tray (24). The four inner support translation plates (272) correspond to the upper four sides of the inner sliding plate (271). A buffer spring (410) is sleeved on the downward pressing and stabilizing shaft (403). A fixing ring (411) is fixedly provided on the lower side of the downward pressing and stabilizing shaft (403). The upper side of the buffer spring (410) is fixedly connected to the bottom surface of the stabilizing sleeve (402). The lower side of the buffer spring (410) is fixedly connected to the fixing ring (411).

3. The second-stage precision grinding device for machining rear bearing sleeves according to claim 2, characterized in that: The inner support translation plate (272) and the inner sleeve sliding plate (271) are provided with two symmetrical upper and lower push plates (273) on their opposite sides. The opposite sides of the two push plates (273) are hinged to the push-pull plate. The upper side of the upper push plate (273) is hinged to the side of the inner sleeve sliding plate (271), and the lower side of the lower push plate (273) is hinged to the rotating tray (24).

4. The second-stage precision grinding device for machining rear bearing sleeves according to claim 3, characterized in that: A retractable pull plate (276) is provided below the supporting rotating shaft (25). The retractable pull plate (276) is fixed on the lower side of the inner sliding plate (271). A retractable spring (275) is sleeved on the inner sliding plate (271). The upper side of the retractable spring (275) is fixedly connected to the bottom surface of the supporting rotating shaft (25), and the lower side of the retractable spring (275) is fixedly connected to the retractable pull plate (276).

5. The second-stage precision grinding device for machining rear bearing sleeves according to claim 4, characterized in that: Above the rotating tray (24) are a pressing ring (409) and a lifting push-pull plate (401). The lifting push-pull plate (401) is rotatably engaged with the stabilizing sleeve (402). Two guide shafts (404) are sleeved on the support frame (3). The lower sides of the two guide shafts (404) are fixedly connected to the lifting push-pull plate (401). A downward electric push rod (405) is provided on the support frame (3). The extended end of the downward electric push rod (405) is fixedly connected to the lifting push-pull plate (401) through a connecting plate (406).

6. The second-stage precision grinding device for machining rear bearing sleeves according to claim 5, characterized in that: Two fixing plates (408) are symmetrically fixed on the pressing ring (409), and a rotating plate (407) is rotatably mounted on the stabilizing sleeve (402). Both fixing plates (408) are fixedly connected to the rotating plate (407).

7. The second-stage precision grinding device for machining rear bearing sleeves according to claim 1, characterized in that: The driving mechanism includes a fine grinding drive motor (9) and a pulley group (8) connected thereto. The pulley group (8) is located below and connected to the fine grinding wheel (5). The adjustment mechanism includes an adjusting threaded rod (6) and a sliding stabilizing frame (7). The support frame (3) is threadedly engaged with the adjusting threaded rod (6). The support frame (3) is slidably engaged with the sliding stabilizing frame (7). The fine grinding wheel (5) is located on the sliding stabilizing frame (7) and is horizontally corresponding to the inner support translation plate (272).

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