High-hardness universal joint shaft sleeve precision grinding device

Abstract

The utility model relates to the technical field of precision grinding, in particular to a high-hardness universal joint shaft sleeve precision grinding device which comprises a bottom plate, the top of the bottom plate is rotationally connected with an annular frame, a connecting frame is fixedly connected in the annular frame, a first motor located on the inner side of the annular frame is installed on the top of the bottom plate, and an output shaft of the first motor is fixedly connected with the connecting frame. And open grooves distributed at equal intervals in the circumferential direction are formed in the top of the annular frame. The grinding block rotates and moves up and down to grind the universal joint shaft sleeve, the push plate pushes the contact rod to enable the connecting block to drive the baffle to move leftwards to open the discharging port, automatic discharging is achieved, the contact block is pushed through the extrusion frame to enable the sliding rod to drive the push disc to move upwards to push the ground universal joint shaft sleeve upwards, and automatic discharging is achieved. The extrusion block moves to push the ball body to drive the push rod frame to move so that the universal joint shaft sleeve can move out of the conical block to fall off, automatic material taking is achieved, workers do not need to conduct feeding and material taking, and therefore the grinding efficiency of the universal joint shaft sleeve is improved.

Description

Technical Field

[0001] This utility model relates to the field of precision grinding technology, and in particular to a precision grinding device for high-hardness universal joint bushings. Background Technology

[0002] Universal joint bushings are used to connect the various components of a universal joint, such as the cross shaft and the universal joint fork, so that power can be effectively transmitted between shafts at different angles, ensuring the normal operation of the mechanical system. The bushing and the journal form a relatively sliding mating surface. Through reasonable material selection and lubrication design, friction can be reduced, component wear can be reduced, and the service life of the universal joint can be extended.

[0003] Currently, after the universal joint bushing is machined, its inner diameter needs to be precision ground. The existing grinding method usually involves workers fixing the universal joint bushing and grinding its inner diameter using grinding equipment. After grinding, workers need to remove the fixed universal joint bushing, which is a cumbersome process and affects the grinding efficiency of the universal joint bushing. Utility Model Content

[0004] In order to overcome the shortcomings mentioned in the background art, this utility model provides a high-hardness universal joint bushing precision grinding device.

[0005] The technical solution is as follows: A high-hardness universal joint bushing precision grinding device includes a base plate, a ring frame rotatably connected to the top of the base plate, a connecting frame fixedly connected inside the ring frame, a first motor mounted on the top of the base plate inside the ring frame, the output shaft of the first motor fixedly connected to the connecting frame, slots evenly distributed circumferentially distributed on the top of the ring frame, sleeves evenly distributed circumferentially distributed on the ring frame, the sleeves located outside the bottom end of the slots, and fixing plates fixedly connected to the top of the ring frame on both sides of the slots, with guides slidably connected to the fixing plates. The guide rod has a clamping plate fixed to one end and a connecting plate fixed to the other end. A first spring is fixed between the connecting plate and the fixing plate. Push plates that are circumferentially equidistant are fixed to the top of the ring frame. A feeding assembly is installed on one side of the top of the base plate, and a mounting frame is installed on the other side of the top of the base plate. An electric push rod is fixed to the upper part of the mounting frame. A second motor is fixed to the telescopic end of the electric push rod. A grinding block is provided below the second motor. A threaded sleeve is fixed to the top of the grinding block and is threadedly connected to the output shaft of the second motor.

[0006] As a further preferred embodiment, the feeding assembly includes a holding frame fixed to one side of the base plate by a support plate, the holding frame having a discharge port, the holding frame having a holding groove communicating with the discharge port, a baffle slidably connected in the holding groove, a connecting block fixedly connected to the bottom of the baffle, a contact rod fixedly connected to the bottom of the connecting block, a fixing block fixedly connected to the bottom of the holding frame, and a second spring fixedly connected between the fixing block and the connecting block.

[0007] As a further preferred embodiment, the bottom thickness of the holding frame gradually increases towards the side away from the annular frame, facilitating material sliding.

[0008] As a further preferred embodiment, a pusher is slidably connected to the inner side of the sleeve, a conical block is fixedly connected to the top of the pusher, a conical groove that mates with the conical block is opened at the bottom of the grinding block, slide rods that are circumferentially equidistant are fixedly connected to the bottom of the pusher, a contact block is fixedly connected between the lower ends of the slide rods that are circumferentially equidistant, and an extrusion frame is fixedly connected to the top of the base plate.

[0009] As a further preferred embodiment, a disc is fixed to the top of the connecting frame via a connecting rod, and circumferentially equidistantly distributed extrusion blocks are fixed to the outer side of the disc. A vertical plate frame is fixed to the holding frame, and a push rod frame is slidably connected to the lower part of the vertical plate frame. A ball is rotatably connected to one end of the push rod frame, and the ball contacts and engages with the disc. A connecting piece is fixed to the push rod frame, and a third spring is fixed between the connecting piece and the vertical plate frame.

[0010] This utility model has the following advantages:

[0011] This invention utilizes the combination of two clamping plates, a sleeve, and a conical block to fix the universal joint bushing. The universal joint bushing is polished by the rotation and up-and-down movement of the grinding block. A push plate pushes the contact rod, causing the connecting block to move the baffle to the left, opening the discharge port. The universal joint bushing above the discharge port falls downwards between the two clamping plates, thus achieving automatic unloading of the universal joint bushing. The extrusion frame pushes the contact block, causing the slide rod to move the push plate upwards. This upward movement of the push plate moves the polished universal joint bushing upwards. The movement of the extrusion block pushes the ball, which in turn moves the push rod frame, causing the universal joint bushing to fall off the conical block, thus achieving automatic unloading of the universal joint bushing. This eliminates the need for workers to fix the universal joint bushing, and also eliminates the need for workers to load and unload it, thereby improving the polishing efficiency of the universal joint bushing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0013] Figure 2This is a top-view three-dimensional structural diagram of the present invention.

[0014] Figure 3 This is a three-dimensional structural diagram of the connecting frame of this utility model.

[0015] Figure 4 This is a three-dimensional structural diagram of the clamping plate of this utility model.

[0016] Figure 5 This is a three-dimensional structural diagram of the holding frame of this utility model, viewed from below.

[0017] Figure 6 for Figure 5 A magnified three-dimensional structural diagram at point A.

[0018] Figure 7 This is a three-dimensional structural diagram of the grinding block of this utility model.

[0019] Figure 8 This is a schematic diagram of the three-dimensional structure of the cone-shaped block of this utility model.

[0020] Figure 9 This is a three-dimensional structural diagram of the push rod frame of this utility model.

[0021] The components are: 1-base plate, 2-ring frame, 3-connecting frame, 4-first motor, 5-grooving, 6-sleeve, 7-fixing plate, 8-guide rod, 9-clamping plate, 10-connecting disc, 11-first spring, 12-push plate, 13-filling frame, 14-discharge port, 15-filling trough, 16-baffle, 17-connecting block, 18-contact rod, 19-fixing block, 20-second spring, 21-mounting frame, 22-electric push rod, 23-second motor, 24-grinding block, 25-threaded sleeve, 26-push plate, 27-conical block, 28-slide rod, 29-contact block, 30-extrusion frame, 31-disc, 32-extrusion block, 33-vertical plate frame, 34-push rod frame, 35-sphere, 36-connecting piece, 37-third spring. Detailed Implementation

[0022] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0023] A high-hardness universal joint bushing precision grinding device, such as Figures 1-9As shown, the device includes a base plate 1, with a ring frame 2 rotatably connected to the top of the base plate 1. A connecting frame 3 is fixedly connected to the upper inner side of the ring frame 2. A first motor 4 (a servo motor is selected for the first motor 4 to facilitate control of the circumferential rotation angle of the ring frame 2) is installed on the top of the base plate 1 and located inside the ring frame 2. The output end of the first motor 4 is fixedly connected to the bottom of the connecting frame 3. Eight circumferentially equidistant slots 5 are opened on the top of the ring frame 2 (the number of slots 5 can be adjusted according to actual needs). Eight circumferentially equidistant sleeves 6 are fixedly connected to the ring frame 2, and the sleeves 6 correspond one-to-one with the slots 5. The sleeves 6 are located outside the bottom end of the slots 5. Fixed plates 7 are fixedly connected to the top of the ring frame 2 on both sides of the slots 5. Guide rods 8 are slidably connected to the fixed plates 7. A clamping plate 9 is fixedly connected to one end of the guide rod 8, and a connecting plate 10 is fixedly connected to the other end of the guide rod 8. The connecting plate 10 is connected to the adjacent fixed plate 7. A first spring 11 is fixedly connected. The top of the clamping plate 9 has an arc-shaped surface to facilitate the movement of the universal joint bushing between the two clamping plates 9. The top of the ring frame 2 is fixedly connected to eight circumferentially equidistant push plates 12, and the push plates 12 have an arc-shaped structure. A feeding assembly is installed on the top left side of the base plate 1, and a mounting frame 21 is installed on the top right side of the base plate 1. An electric push rod 22 is fixedly connected to the upper part of the mounting frame 21. A second motor 23 (a geared motor) is fixedly connected to the telescopic end of the electric push rod 22. A grinding block 24 is provided on the lower side of the second motor 23. A threaded sleeve 25 is fixedly connected to the top of the grinding block 24, and the threaded sleeve 25 is threadedly connected to the output shaft of the second motor 23. Before use, the grinding block 24 can be replaced according to the inner diameter of the universal joint bushing. When replacing the grinding block 24, manually rotate the grinding block 24 to separate the threaded sleeve 25 from the output shaft of the second motor 23 and replace it.

[0024] The feeding assembly includes a holding frame 13 fixed to the left side of the base plate 1 via a support plate. The bottom thickness of the holding frame 13 gradually increases from right to left, forming an inclined surface to facilitate the sliding of the universal joint bushing inside to the right. The holding frame 13 has a discharge port 14 and a holding groove 15 communicating with the discharge port 14. A baffle 16 is slidably connected within the holding groove 15. A connecting block 17 is fixedly connected to the bottom of the baffle 16, and a contact rod 18 is fixedly connected to the bottom of the connecting block 17. A fixing block 19 is fixed to the bottom of the 13. A second spring 20 is fixed between the fixing block 19 and the connecting block 17. The push plate 12 moves circumferentially to squeeze the contact rod 18, causing the connecting block 17 on it to drive the baffle 16 to move to the left and open the discharge port 14. This allows the rightmost universal joint bushing in the holding frame 13 to fall downward through the discharge port 14 between the two clamping plates 9. Under the action of gravity, the universal joint bushing falls downward through the slot 5 into the sleeve 6, completing the material unloading and fixing work.

[0025] A push plate 26 is slidably connected to the inner side of the sleeve 6. A conical block 27 is fixed to the top of the push plate 26. The conical block 27 and two clamping plates 9 cooperate to position the universal joint bushing and prevent it from shifting position, thus affecting the grinding work. The bottom of the grinding block 24 has a conical groove that cooperates with the conical block 27. Four circumferentially equidistant sliding rods 28 are fixed to the bottom of the push plate 26. A contact block 29 is fixed between the lower ends of the four sliding rods 28. A pressing frame 30 is fixed to the top of the base plate 1. The pressing frame 30 pushes the contact block 29 so that the sliding rods 28 on it drive the push plate 26 to push the ground universal joint bushing upward for easy removal.

[0026] A disc 31 is fixed to the top of the connecting frame 3 via a connecting rod. Extrusion blocks 32, which are circumferentially equidistant, are fixed to the outer side of the disc 31. A vertical plate frame 33 is fixed to the holding frame 13. A push rod frame 34 is slidably connected to the lower part of the vertical plate frame 33. A ball 35 is rotatably connected to one end of the push rod frame 34. The ball 35 contacts and engages with the disc 31. A connecting piece 36 is fixed to the push rod frame 34. A third spring 37 is fixed between the connecting piece 36 and the vertical plate frame 33. The extrusion blocks 32 push the ball 35 to move the push rod frame 34, causing the universal joint bushing to fall off the conical block 27, thereby realizing the automatic unloading of the universal joint bushing.

[0027] In use, the user neatly places the universal joint bushings into the holding frame 13. Because the bottom thickness of the holding frame 13 gradually increases from right to left, forming an inclined surface, it facilitates the universal joint bushings inside the holding frame 13 sliding to the right. The rightmost universal joint bushing will move to the upper side of the baffle 16. Then, the user starts the first motor 4, driving the connecting frame 3 and the ring frame 2 to rotate (each rotation of the ring frame 2 is 45°, and the interval between each start of the first motor 4 is 10 seconds). The rotation and movement of the ring frame 2 causes the push plate 12 on it to move circumferentially. When the push plate 12 contacts the contact rod 18, the push plate 12 continues to move circumferentially. When the push plate 12 moves, it pushes the contact rod 18 to the left. The leftward movement of the contact rod 18 causes the baffle 16 to move to the left via the connecting block 17. The second spring 20 is compressed accordingly. The baffle 16 moves to the left, opening the discharge port 14. The universal joint sleeve on the upper side of the discharge port 14 falls downward between the two clamping plates 9. Because the upper side of the clamping plate 9 has an arc-shaped surface, it is convenient for the universal joint sleeve to fall downward between the two clamping plates 9. At this time, the universal joint sleeve will move downward under the action of gravity, causing the two clamping plates 9 to move away from each other. The first spring 11 is compressed accordingly. When the universal joint sleeve falls downward through the slot 5 into the sleeve 6, it is then connected by the two clamping plates 11 to the discharge port 14. The clamping plate 9 is pressed tightly against the universal joint bushing by the elastic force of the first spring 11, thereby fixing the universal joint bushing. When the ring frame 2 rotates so that the push plate 12 on it moves away from the contact rod 18, the baffle 16 is reset by the elastic force of the second spring 20. When the sleeve 6 containing the universal joint bushing rotates to directly below the grinding block 24, the user starts the electric push rod 22 and the second motor 23 (the time for the electric push rod 22 to extend and retract is 10 seconds, and the working time of the second motor 23 is also 10 seconds). When the electric push rod 22 and the second motor 23 are working, the first electric... When the first motor 4 is not working, the electric push rod 22 and the second motor 23 stop working. The operation of the electric push rod 22 causes the second motor 23 to drive the parts on it to move downward or upward. The operation of the second motor 23 causes the grinding block 24 to rotate through the threaded sleeve 25. During the rotation of the grinding block 24, it moves to the inside of the universal joint bushing, thereby realizing the grinding work of the universal joint bushing. (Before use, the grinding block 24 can be replaced according to the inner diameter of the universal joint bushing. When replacing the grinding block 24, manually rotate the grinding block 24 to separate the threaded sleeve 25 from the output shaft of the second motor 23 and replace it.)

[0028] The rotation of the ring frame 2 causes the sleeve 6 to move circumferentially. This circumferential movement of the sleeve 6 drives the circumferential movement of the parts on it, causing the contact block 29 to move circumferentially. When the contact block 29 contacts the extrusion frame 30, it continues to move circumferentially and is pushed upwards by the extrusion frame 30. This upward movement of the contact block 29, via the slide rod 28, causes the push plate 26 to move upwards. The upward movement of the push plate 26 pushes the polished universal joint bushing upwards. When the universal joint bushing enters the sleeve 6 through the slot 5, the conical block 27 positions the universal joint bushing to prevent positional displacement, which would affect subsequent polishing work. The rotation of the connecting frame 3 causes the disc 31 to rotate. The rotation of the disc 31 causes the extrusion block 32 to move circumferentially. The kinetic energy pushes the ball 35 to move, the movement of the ball 35 drives the push rod frame 34 to move, the movement of the push rod frame 34 drives the connecting piece 36 on it to move, and the third spring 37 is compressed accordingly. When the push rod frame 34 moves, the contact block 29 moves to the top horizontal position of the extrusion frame 30 (at this time, the push plate 26 is located on the upper side of the two clamping plates 9). When the ring frame 2 rotates, the extrusion block 32 continues to move circumferentially. At this time, the contact block 29 continues to move at the horizontal position of the extrusion frame 30, and the extrusion block 32 pushes the ball 35 to move. This allows the push rod frame 34 to move so that the universal joint bushing can be removed from the conical block 27 and fall off. When the extrusion block 32 moves circumferentially and does not extrude the ball 35, the push rod frame 34 moves back to its original position under the action of the elastic force of the third spring 37.

[0029] The above method can achieve the fixing of the universal joint bushing, and at the same time, it can realize the automatic grinding of the universal joint bushing, and realize the automatic feeding and unloading function of the universal joint bushing. Therefore, it is not necessary for workers to fix the universal joint bushing, nor is it necessary for workers to feed and unload the universal joint bushing, thereby improving the grinding efficiency of the universal joint bushing.

[0030] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A high-hardness universal joint bushing precision grinding device, comprising a base plate (1), a ring frame (2) rotatably connected to the top of the base plate (1), a connecting frame (3) fixedly connected inside the ring frame (2), a first motor (4) mounted on the top of the base plate (1) and located inside the ring frame (2), the output shaft of the first motor (4) being fixedly connected to the connecting frame (3), the top of the ring frame (2) having circumferentially equidistant slots (5), and sleeves (6) circumferentially equidistantly connected to the ring frame (2), the sleeves (6) being located outside the bottom end of the slots (5), characterized in that: A fixing plate (7) is fixedly connected to the top of the annular frame (2) on both sides of the slot (5). A guide rod (8) is slidably connected to the fixing plate (7). A clamping plate (9) is fixedly connected to one end of the guide rod (8). A connecting plate (10) is fixedly connected to the other end of the guide rod (8). A first spring (11) is fixedly connected between the connecting plate (10) and the fixing plate (7). Push plates (12) are circumferentially equidistantly distributed on the top of the annular frame (2). The bottom plate (1) A feeding assembly is installed on one side of the top of the base plate (1), and a mounting bracket (21) is installed on the other side of the top of the base plate (1). An electric push rod (22) is fixedly connected to the upper part of the mounting bracket (21), and a second motor (23) is fixedly connected to the telescopic end of the electric push rod (22). A grinding block (24) is provided on the lower side of the second motor (23), and a threaded sleeve (25) is fixedly connected to the top of the grinding block (24). The threaded sleeve (25) is threadedly connected to the output shaft of the second motor (23).

2. The high-hardness universal joint bushing precision grinding device according to claim 1, characterized in that: The feeding assembly includes a holding frame (13) fixed to one side of the base plate (1) by a support plate. The holding frame (13) has a discharge port (14) and a holding groove (15) communicating with the discharge port (14). A baffle (16) is slidably connected in the holding groove (15). A connecting block (17) is fixed to the bottom of the baffle (16). A contact rod (18) is fixed to the bottom of the connecting block (17). A fixing block (19) is fixed to the bottom of the holding frame (13). A second spring (20) is fixed between the fixing block (19) and the connecting block (17).

3. The high-hardness universal joint bushing precision grinding device according to claim 2, characterized in that: The bottom thickness of the holding frame (13) gradually increases towards the side away from the ring frame (2) to facilitate material sliding.

4. A high-hardness universal joint bushing precision grinding device according to claim 3, characterized in that: The inner side of the sleeve (6) is slidably connected to a push plate (26), the top of the push plate (26) is fixedly connected to a conical block (27), the bottom of the grinding block (24) is provided with a conical groove that cooperates with the conical block (27), the bottom of the push plate (26) is fixedly connected to a sliding rod (28) that is circumferentially equidistant, the lower ends of the sliding rods (28) that are circumferentially equidistant are fixedly connected to a contact block (29), and the top of the base plate (1) is fixedly connected to a pressing frame (30).

5. A high-hardness universal joint bushing precision grinding device according to claim 4, characterized in that: A disc (31) is fixed to the top of the connecting frame (3) via a connecting rod. Extrusion blocks (32) are fixed to the outer side of the disc (31) and are distributed circumferentially. A vertical plate frame (33) is fixed to the holding frame (13). A push rod frame (34) is slidably connected to the lower part of the vertical plate frame (33). A ball (35) is rotatably connected to one end of the push rod frame (34). The ball (35) contacts and engages with the disc (31). A connecting piece (36) is fixed to the push rod frame (34). A third spring (37) is fixed between the connecting piece (36) and the vertical plate frame (33).

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