A loading and unloading switching mechanism in a hub bearing grinding machine

Abstract

The utility model discloses a kind of upper and lower material switching mechanisms of hub bearing grinding machine, including the belt sliding table being set in lathe, further include the upper fixed plate being set in the output end of belt sliding table, the bottom of upper fixed plate is equipped with rotating assembly, the output end of rotating assembly is connected with transposition rotating plate through bolt, the two sides of transposition rotating plate bottom length direction are respectively equipped with wide jaw air cylinder, wide jaw air cylinder includes two mutually close or far away telescopic blocks, clamping jaw link block is connected on telescopic block through bolt, first grab plate and second grab plate are installed on clamping jaw link block, two mutually close telescopic blocks can drive first grab plate and second grab plate close to hub bearing body. Linear conveying (belt sliding table) and rotating switching function are integrated, realize the automatic, efficient conversion between upper loading position and lower loading position of hub bearing in grinding machine;Symmetrical double-side clamping design is simultaneously used, and the stability of grabbing is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical automation technology, and in particular to a loading and unloading switching mechanism inside a wheel hub bearing grinding machine. Background Technology

[0002] In the precision grinding process of wheel hub bearings, automatic switching between loading and unloading is required within the machine to achieve efficient continuous production. Existing wheel hub bearing grinding machines mostly use single-station robotic arms or manual intervention for loading and unloading, which is difficult to meet the requirements of high-cycle, unmanned production and is prone to introducing human error, affecting processing consistency and product quality stability.

[0003] In existing technologies, loading and unloading mechanisms typically only have a single gripping function and cannot simultaneously complete the actions of picking up finished products and placing materials to be processed, resulting in idle waiting time for the processing spindle; moreover, some rotary switching structures rely on customized large-angle cylinders, which are costly, difficult to maintain, and hard to integrate and install in confined machine tool spaces, thus limiting the level of equipment automation and the flexible expansion capability of production lines. Utility Model Content

[0004] The purpose of this invention is to provide a loading and unloading switching mechanism inside a wheel hub bearing grinding machine to solve the problems of low loading and unloading efficiency and waiting time at the processing position mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a loading and unloading switching mechanism for a wheel hub bearing grinding machine, including a belt slide table installed inside the machine tool, and an upper fixed plate installed at the output end of the belt slide table. A rotating assembly is installed at the bottom of the upper fixed plate, and a shifting rotating plate is bolted to the output end of the rotating assembly. Wide claw cylinders are respectively provided on both sides of the bottom length direction of the shifting rotating plate. The wide claw cylinders include two telescopic blocks that can move closer or further apart from each other. A gripper connecting block is bolted to the telescopic block, and a first gripping plate and a second gripping plate are installed on the gripper connecting block. The two telescopic blocks that move closer together can drive the first gripping plate and the second gripping plate to move closer to the wheel hub bearing body.

[0006] In a preferred embodiment of this technical solution, the rotating component includes a first rotating cylinder, and the first turntable of the first rotating cylinder is disposed facing downwards.

[0007] In a preferred embodiment of this technical solution, a second rotary cylinder is mounted on the first rotary table, and the second rotary table of the second rotary cylinder is positioned downwards.

[0008] In the preferred embodiment of this technical solution, the rotation angles of the first and second rotary cylinders are both 90 degrees, the rotation angle of the rotating assembly is 180 degrees, and the shifting rotary plate is connected to the second turntable by bolts.

[0009] Based on the preferred embodiment of this technical solution, the first gripping plate is provided with a first V-shaped notch, and a wheel hub bearing body can be simultaneously fitted by two first V-shaped notches.

[0010] In a preferred embodiment of this technical solution, a gripping block is installed on the second gripping plate, the gripping block has a second V-shaped notch, and an adhesive component is installed on the second V-shaped notch.

[0011] In the preferred embodiment of this technical solution, the bonding component includes a ventilation block and rubber sheets adhered to both sides of the ventilation block, and the ventilation block and the gripping block are connected by bolts.

[0012] Based on the preferred embodiment of this technical solution, the vent block is provided with a first air hole for connecting the air pipe connector. The vent block is provided with an air intake hole on the side facing the rubber sheet, and the air intake hole is connected to the first air hole. The rubber sheet is provided with a second air hole at the position corresponding to the air intake hole. The rubber sheet has an arc-shaped structure. The inner side of the rubber sheet is also provided with a third air hole, which can draw air to make the rubber sheet adhere to the outer circumferential surface of the wheel hub bearing body.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up two wide-jaw cylinders to switch between 180-degree rotation, the "finished product picking" and "material to be processed" operations are synchronized, which significantly reduces the idle waiting time of the processing spindle and improves the overall efficiency and production cycle of the equipment.

[0014] 2. A two-stage standard 90-degree rotary cylinder cascade structure is adopted to replace the customized large-angle cylinder, which reduces procurement costs, improves component versatility, and adapts to the narrow installation space inside the machine tool while ensuring the 180-degree switching function. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of the loading and unloading switching mechanism in a wheel hub bearing grinding machine according to the present invention.

[0016] Figure 2 This is a schematic diagram of the upper fixing plate structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the rotating plate structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the telescopic block structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the ventilation block structure of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Upper fixed plate; 21. First rotary cylinder; 211. First turntable; 22. Second rotary cylinder; 221. Second turntable; 3. Fitting component; 31. Vent block; 311. First air hole; 32. Rubber sheet; 321. Second air hole; 322. Third air hole; 4. Repositioning rotary plate; 5. Wide claw cylinder; 51. Telescopic block; 6. Gripper connecting block; 7. First gripping plate; 71. First V-shaped notch; 8. Wheel hub bearing body; 9. Second gripping plate; 91. Grip block; 911. Second V-shaped notch. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides an embodiment: a loading / unloading switching mechanism for a wheel hub bearing grinding machine, including a belt slide table installed inside the machine tool, and an upper fixed plate 1 installed at the output end of the belt slide table. A rotating assembly is installed at the bottom of the upper fixed plate 1, and a shifting rotating plate 4 is bolted to the output end of the rotating assembly. Wide-jaw cylinders 5 are respectively provided on both sides of the bottom length direction of the shifting rotating plate 4. The wide-jaw cylinders 5 include two telescopic blocks 51 that can move closer or further apart from each other. A gripper connecting block 6 is bolted to the telescopic block 51, and a first gripping plate 7 and a second gripping plate 9 are installed on the gripper connecting block 6. The two telescopic blocks 51 that move closer together can drive the first gripping plate 7 and the second gripping plate 9 to move closer to the wheel hub bearing body 8. The linear conveying (belt slide table) and rotary switching functions are integrated into one unit, realizing automatic and efficient switching between the loading and unloading positions of the wheel hub bearing body 8 inside the grinding machine; at the same time, the symmetrical double-sided clamping design improves the gripping stability and prevents the workpiece from shifting or falling off during transportation.

[0023] Please see Figure 1-5 A further solution based on this embodiment is as follows: the rotating assembly includes a first rotating cylinder 21, and the first turntable 211 of the first rotating cylinder 21 is arranged facing downwards. This arrangement lowers the center of gravity of the rotating assembly, making the structure compact and easy to install in the limited space of the machine tool, while reserving an installation interface for the next stage actuator.

[0024] Please see Figure 1-4A further solution based on this embodiment is as follows: a second rotary cylinder 22 is installed on the first rotary disk 211, and the second rotary disk 221 of the second rotary cylinder 22 is arranged facing downwards. By directly installing the second rotary cylinder 22 on the output end of the first rotary cylinder 21, a cascaded drive structure is formed, which effectively extends the overall rotation stroke while maintaining a simple and reliable motion chain.

[0025] Please see Figure 1-4 A further solution based on this embodiment is as follows: the rotation angles of the first rotary cylinder 21 and the second rotary cylinder 22 are both 90 degrees, the rotation angle of the rotating assembly is 180 degrees, and the switching rotating plate 4 is bolted to the second turntable 221. By using a combination of two standard 90-degree rotary cylinders to achieve 180-degree workstation switching, the high cost and long lead time of custom-made large-angle cylinders are avoided, significantly reducing procurement costs and improving component versatility and maintenance convenience.

[0026] Please see Figure 1-4 A further solution based on this embodiment is as follows: the first gripping plate 7 is provided with a first V-shaped notch 71, and a wheel hub bearing body 8 can be simultaneously fitted by two first V-shaped notches 71. The V-shaped notch structure can automatically center the outer circle of the wheel hub bearing body 8, realizing preliminary positioning and support without clamping force.

[0027] Please see Figure 2-5 A further solution based on this embodiment is as follows: a gripping block 91 is installed on the second gripping plate 9, the gripping block 91 is provided with a second V-shaped notch 911, and an adhesive element 3 is installed on the second V-shaped notch 911. This design combines mechanical positioning with flexible adsorption, ensuring gripping reliability.

[0028] Please see Figure 2-5 A further solution based on this embodiment is as follows: the bonding component 3 includes a venting block 31 and rubber sheets 32 adhered to both sides of the venting block 31. The venting block 31 is connected to the gripping block 91 by bolts. The rubber sheets 32 provide a high-friction, flexible contact surface, adapting to the dimensional tolerances of the outer diameter of the wheel hub bearing body 8, while protecting the surface finish of the workpiece. The rubber sheets 32 adhering to the wheel hub bearing body 8 increases the contact area.

[0029] Please see Figure 2-5A further solution based on this embodiment is as follows: The venting block 31 is provided with a first air hole 311 for connecting an air pipe connector. The venting block 31 has an air intake hole on the side facing the rubber sheet 32, which is connected to the first air hole 311. The rubber sheet 32 ​​has a second air hole 321 corresponding to the air intake hole. The rubber sheet 32 ​​has an arc-shaped structure, and a third air hole 322 is also provided on the inner side of the rubber sheet 32. The third air hole 322 can draw air to make the rubber sheet 32 ​​adhere to the outer surface of the wheel hub bearing body 8. The porous negative pressure adsorption structure allows the rubber sheet 32 ​​to tightly wrap around the outer circle of the wheel hub bearing body 8 after vacuuming, forming a uniform adsorption force, significantly improving the gripping firmness, and effectively preventing the workpiece from falling off during high-speed movement or posture flipping.

[0030] Working principle: Two wide-jaw cylinders 5 symmetrically arranged on both sides of the bottom length of the rotating plate 4 achieve parallel loading and unloading operations of "synchronously gripping the processed workpiece and placing the unprocessed workpiece": In the initial state, the mechanism is located in the ready position outside the machine tool, with the gripper of one of the wide-jaw cylinders 5 already holding the wheel hub bearing body 8 to be processed, and the other side is in an empty state; when the belt slide transports the entire mechanism to the grinding machine processing area, the two wide-jaw cylinders 5 act synchronously - the telescopic block 51 on the empty side drives the gripper connecting block 6 to drive the first gripping plate 7 and the second gripper plate 8. The gripping plate 9 approaches the already ground wheel bearing body 8. The first V-shaped notch 71 on the first gripping plate 7 automatically centers and initially supports the outer circle of the wheel bearing body 8. The bonding part 3 on the second gripping plate 9 achieves a firm grip through negative pressure adsorption. Specifically, the external vacuum source enters through the first air hole 311 on the ventilation block 31. Through the suction hole, the second air hole 321 on the rubber sheet 32, and the inner third air hole 322, a negative pressure cavity is formed between the arc-shaped rubber sheet 32 ​​and the outer circle of the wheel bearing body 8, making the rubber sheet 32 ​​tightly gripped. The workpiece surface is covered; simultaneously, the wide-jaw cylinder 5 on the other side precisely releases the clamped, unprocessed wheel hub bearing body 8 into the grinding machine spindle fixture; after completing the "retrieving finished product and placing the workpiece to be processed" process, the belt slide retracts to a safe position, and the machine tool immediately begins a new round of grinding. During this process, the rotating components are activated: the first rotary cylinder 21 rotates 90 degrees, driving the second rotary cylinder 22 and the shifting rotary plate 4 mounted on its first turntable 211 to rotate as a whole. Then, the second rotary cylinder 22 rotates 90 degrees relative to the workpiece, ultimately causing the workpiece to rotate. The clamping mechanism rotates 180 degrees, turning the gripped finished wheel hub bearing body 8 to the loading side, while simultaneously turning the empty jaws to the unloading side, preparing for the next cycle. When the next processing cycle ends, the belt slide enters the processing area again, repeating the above synchronous "pick-up and drop-off" action. Through the coordinated cooperation of the double-wide-jaw cylinder 5 and the 180-degree cascade rotation switching, the idle waiting time of the processing position is significantly reduced, avoiding the cycle bottleneck of traditional single-station loading and unloading, and greatly improving the automation efficiency of the wheel hub bearing body 8 grinding production line.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A loading and unloading switching mechanism inside a wheel hub bearing grinding machine, comprising a belt slide table disposed inside the machine tool, characterized in that: It also includes an upper fixed plate (1) set at the output end of the belt slide table. A rotating component is installed at the bottom of the upper fixed plate (1). A shifting rotating plate (4) is bolted to the output end of the rotating component. Wide claw cylinders (5) are respectively provided on both sides of the bottom length direction of the shifting rotating plate (4). The wide claw cylinder (5) includes two telescopic blocks (51) that can move closer or further away from each other. A gripper connecting block (6) is bolted to the telescopic block (51). A first gripping plate (7) and a second gripping plate (9) are installed on the gripper connecting block (6). The two telescopic blocks (51) that move closer to each other can drive the first gripping plate (7) and the second gripping plate (9) to move closer to the hub bearing body (8).

2. The loading and unloading switching mechanism inside the wheel hub bearing grinding machine according to claim 1, characterized in that: The rotating assembly includes a first rotary cylinder (21), and the first turntable (211) of the first rotary cylinder (21) is arranged downward.

3. The loading and unloading switching mechanism inside the wheel hub bearing grinding machine according to claim 2, characterized in that: A second rotary cylinder (22) is installed on the first rotary disk (211), and the second rotary disk (221) of the second rotary cylinder (22) is set downward.

4. The loading and unloading switching mechanism inside the wheel hub bearing grinding machine according to claim 3, characterized in that: The first rotary cylinder (21) and the second rotary cylinder (22) both rotate at 90 degrees, the rotary assembly rotates at 180 degrees, and the shifting rotary plate (4) is bolted to the second turntable (221).

5. The loading and unloading switching mechanism inside the wheel hub bearing grinding machine according to claim 4, characterized in that: The first gripping plate (7) is provided with a first V-shaped notch (71), and a wheel hub bearing body (8) can be simultaneously fitted by two first V-shaped notches (71).

6. The loading and unloading switching mechanism inside the wheel hub bearing grinding machine according to claim 5, characterized in that: A gripping block (91) is installed on the second gripping plate (9), and a second V-shaped notch (911) is provided on the gripping block (91), and a fitting piece (3) is installed on the second V-shaped notch (911).

7. The loading and unloading switching mechanism inside the wheel hub bearing grinding machine according to claim 6, characterized in that: The bonding component (3) includes a ventilation block (31) and rubber sheets (32) glued to both sides of the ventilation block (31). The ventilation block (31) is connected to the gripping block (91) by bolts.

8. The loading and unloading switching mechanism inside the wheel hub bearing grinding machine according to claim 7, characterized in that: The ventilation block (31) is provided with a first air hole (311), which is used to connect the air pipe connector. The ventilation block (31) is provided with an air intake hole on the side facing the rubber sheet (32), which is connected to the first air hole (311). The rubber sheet (32) is provided with a second air hole (321) at the position corresponding to the air intake hole. The rubber sheet (32) is an arc-shaped structure. The inner side of the rubber sheet (32) is also provided with a third air hole (322). The third air hole (322) can draw air to make the rubber sheet (32) fit against the outer surface of the wheel hub bearing body (8).

Images