A bearing retainer burr-free punching device and punching process

Abstract

The application relates to the technical field of bearing retainer punching, and discloses a bearing retainer burr-free punching device and a punching process, the bearing retainer burr-free punching device comprises a workbench, a plurality of supporting legs are arranged at the bottom of the workbench, a fixing table and a punching seat are respectively arranged on the surface of the workbench, a positioning assembly is arranged on the surface of the fixing table, the positioning assembly comprises an electric push rod fixedly connected to the surface of the fixing table, a lower supporting block is fixedly connected to the output end of the electric push rod, a connecting block is fixedly connected to the top of the lower supporting block, an upper supporting block is fixedly connected to the connecting block, a retainer body is sleeved with the side, away from each other, of the upper supporting block and the lower supporting block, and a punching assembly is arranged on the surface of the punching seat; the upper supporting block and the lower supporting block are matched and arranged, can play a good supporting role during punching, and the main punch and the auxiliary punch are used for step-by-step punching, so that the edge cracks or excessive deformation caused by punching are effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing retainer punching, more particularly, it relates to a bearing retainer burr-free punching device and punching process. BACKGROUND

[0002] The bearing retainer is a key component in the bearing, its main function is to keep the steel ball or roller at the appropriate interval and prevent them from contacting or wearing each other, the design and material selection of the retainer directly affect the performance, durability and working efficiency of the bearing, since the bearing retainer usually needs to be punched for positioning the roller, therefore, its processing needs to be punched on its surface.

[0003] At present, the bearing retainer is usually punched by rolling punching device, that is, after punching a hole, it is rotated by a certain angle, and then the next hole is punched, this kind of rolling punching device has high working efficiency, but when processing the deep groove ball bearing retainer, since the deep groove ball retainer is mostly made of two half retainers connected by rivets, the deep groove ball retainer is mostly processed one side at a time, usually punched on the edge, compared with punching in the center of the retainer, the edge punching is easy to cause structural deformation of the retainer, and more prone to burrs, thereby not conducive to the effective punching of the retainer. SUMMARY

[0004] The present application discloses a bearing retainer burr-free punching device and punching process, which solves the technical problems in the above background technology.

[0005] The first aspect of the present application discloses a bearing retainer burr-free punching device, comprising a workbench, a plurality of supporting legs are installed at the bottom of the workbench, a fixed table and a punching seat are respectively installed on the surface of the workbench;

[0006] A positioning assembly is arranged on the surface of the fixed table, the positioning assembly comprises an electric push rod fixedly connected to the surface of the fixed table, a lower supporting block is fixedly connected to the output end of the electric push rod, a connecting block is fixedly connected to the top of the lower supporting block, and an upper supporting block is fixedly connected to the connecting block, the upper supporting block and the lower supporting block are sleeved with a retainer body on the side away from each other;

[0007] A punching assembly is arranged on the surface of the punching seat, the punching assembly comprises a cylinder fixedly connected to the surface of the punching seat, a plurality of punching frames are fixedly connected to the surface of the punching seat, a plurality of vertical rods are fixedly connected to the top of the punching frames, an activity plate is slidingly connected to the surface of the vertical rods, a main punch for punching is installed on the surface of the activity plate, and the activity plate is connected with the punching frame through a spring A;

[0008] A punching groove adapted to the main punch is formed on the surface of the upper supporting block, and an adjusting assembly for rotating the retainer body is installed on the surface of the workbench.

[0009] Preferably, the upper support block surface is fixedly connected with a first scraper and a second scraper respectively, and the first scraper and the second scraper are inclinedly arranged at a certain angle.

[0010] Preferably, the adjusting assembly comprises a fixed seat fixedly connected to the surface of the workbench, a sleeve ring fixedly connected to the top of the fixed seat, a rotating ring rotatably connected to the inner wall of the sleeve ring, a plurality of clamping blocks for clamping the holder body mounted on the inner wall of the rotating ring, and the rotating ring is connected with the clamping blocks through a plurality of positioning rods, the surface of the fixed table is fixedly connected with a motor A, the output end of the motor A is fixedly connected with a gear A, and a plurality of tooth grooves matched with the gear A are formed in the surface of the rotating ring.

[0011] Preferably, the surface of the sleeve ring is fixedly connected with a connecting pipe, the connecting pipe and the sleeve ring are in communication, a gas cavity is formed in the interior of the rotating ring, the gas cavity is in communication with the positioning rods and the sleeve ring at two ends respectively, and the connecting pipe is connected with an external air pressure device.

[0012] Preferably, a secondary punch is arranged in the main punch, the secondary punch is located at the central position in the interior of the main punch, and an adapter block is fixedly connected to the top of the secondary punch.

[0013] Preferably, two springs B are fixedly connected to the bottom of the adapter block, and the lower ends of the springs B are fixedly connected with the main punch.

[0014] Preferably, a gear ring is fixedly connected to the surface of the main punch and rotatably connected in the movable plate through the gear ring, a motor B is fixedly connected to the top of the movable plate, a gear B is fixedly connected to the output end of the motor B, and the gear B is engaged with the gear ring.

[0015] Preferably, a collecting groove is formed in the surface of the upper support block close to the position of the second scraper.

[0016] Preferably, the side of the connecting block close to the punching groove is arranged as an inclined surface.

[0017] The second aspect of the present application discloses a bearing holder burr-free punching process, comprising the following steps:

[0018] S1: The holder to be punched is sleeved on the surfaces of the upper support block and the lower support block, and is correspondingly clamped in the clamping blocks, the clamping blocks clamp and fix the holder through the external air pressure device;

[0019] S2: In the initial state, the adapter block corresponds to the top head, at this time, the output of the air cylinder makes the top head contact and press down the adapter block, further, the adapter block drives the secondary punch to move downward, first punching a smaller hole on the surface of the holder, facilitating further punching in the subsequent process;

[0020] S3: Then the cylinder retracts back to normal, and by starting the motor B, the gear B (341) is driven to rotate by the motor B, and the gear ring is driven to rotate, thereby rotating the main punch by an angle, and the adapter block is offset from the top head. At this time, the cylinder retracts, and then the main punch and the auxiliary punch are pushed down simultaneously to punch holes based on the small hole punched in step S2;

[0021] S4: After a single hole is punched, the motor A is output to drive the gear A to rotate, thereby driving the rotating ring to rotate and driving the retainer to rotate by a certain angle, and switching to the next pre-punching position;

[0022] S5: Repeat steps S1-S4 until the punching operation of all hole positions on the retainer surface is completed.

[0023] The beneficial effects of the present application are:

[0024] The upper support block and the lower support block are cooperatively arranged to support the retainer, and the upper support block is provided with a punching groove for facilitating punching without affecting normal punching, thereby effectively supporting the retainer body and preventing deformation of the retainer body caused by punching the edge. Meanwhile, the main punch and the auxiliary punch are cooperatively arranged, and the step-by-step punching can make the internal stress of the material more uniform, and the step-by-step hole expansion can gradually guide the plastic deformation of the material, rather than applying the punching force at once, thereby effectively reducing the edge cracks or excessive deformation caused by punching. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present application;

[0026] Figure 2 is a schematic diagram of the present application for showing the positioning assembly;

[0027] Figure 3 is a schematic diagram of the present application for separately showing the connection relationship between the lower support block, the connecting block and the upper support block;

[0028] Figure 4 is a schematic diagram of the present application for showing the cooperation state of the positioning assembly and the adjusting assembly;

[0029] Figure 5 is a schematic diagram of the present application for separately showing the adjusting assembly;

[0030] Figure 6 is a sectional view of the internal structure of the rotating ring of the present application;

[0031] Figure 7 is a schematic diagram of the present application for showing the punching assembly;

[0032] Figure 8is a sectional view for showing the internal structure of the main punch.

[0033] In the figure: 1, workbench; 11, supporting leg; 2, fixed table; 21, electric push rod; 211, lower supporting block; 212, connecting block; 213, upper supporting block; 214, first scraper; 215, second scraper; 216, collecting groove; 22, retainer body; 23, rotating ring; 231, clamping block; 232, positioning rod; 24, fixed seat; 241, collar; 242, connecting pipe; 243, air cavity; 25, motor A; 251, gear A; 3, punching seat; 31, air cylinder; 311, top head; 32, punching frame; 321, movable plate; 322, vertical rod; 323, spring A; 33, main punch; 331, auxiliary punch; 332, adapter block; 333, spring B; 34, motor B; 341, gear B; 342, gear ring. DETAILED DESCRIPTION

[0034] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is merely meant to provide a better understanding of the subject matter described herein and can be changed in function and arrangement without departing from the scope of the content of this specification. Various processes or components can be omitted, substituted, or added according to various examples. In addition, features described in some examples can be combined in other examples.

[0035] Example One: In the embodiments of the present application, a bearing retainer burr-free punching device is disclosed, as shown in Figure 1 , Figure 2 and Figure 3 , which comprises a workbench 1, a plurality of supporting legs 11 are installed at the bottom of the workbench 1 for supporting the workbench 1, the supporting legs 11 can be four or other number capable of supporting, a fixed table 2 and a punching seat 3 are respectively installed on the surface of the workbench 1, the fixed table 2 and the punching seat 3 are connected on the surface of the workbench 1 by welding or screwing or other fixing methods, a positioning assembly is arranged on the surface of the fixed table 2, the positioning assembly comprises an electric push rod 21 fixedly connected on the surface of the fixed table 2, a lower supporting block 211 is fixedly connected on the output end of the electric push rod 21, a connecting block 212 is fixedly connected on the top of the lower supporting block 211, and an upper supporting block 213 is fixedly connected on the connecting block 212, a retainer body 22 is sleeved on the side of the upper supporting block 213 and the lower supporting block 211 away from each other, and the side of the upper supporting block 213 and the lower supporting block 211 away from each other is correspondingly arranged as a circular arc shape matched with the inner wall shape of the retainer body 22, so as to effectively support the retainer body 22 during punching.

[0036] The punching assembly is arranged on the surface of the punching base 3, and the punching assembly comprises a cylinder 31 fixedly connected to the surface of the punching base 3. The surface of the punching base 3 is also fixedly connected with a plurality of punching frames 32. The top of each punching frame 32 is fixedly connected with a plurality of vertical rods 322. The surface of each vertical rod 322 is slidingly connected with a movable plate 321. The surface of the movable plate 321 is provided with a main punch 33 for punching. The movable plate 321 is connected to the punching frame 32 through a spring A 323. The two ends of the spring A 323 are fixedly connected to the movable plate 321 and the punching frame 32 respectively.

[0037] The surface of the upper supporting block 213 is provided with a punching groove matched with the main punch 33. Through the arrangement of the punching groove, the upper supporting block 213 can support the retainer body 22 while effectively avoiding the obstruction of the main punch 33. The surface of the workbench 1 is also provided with an adjusting assembly for rotating the retainer body 22.

[0038] Specifically, when punching, the retainer body 22 is supported by the upper supporting block 213 and the lower supporting block 211. The surface of the upper supporting block 213 is provided with a punching groove, which facilitates the punching position. Then, through the output of the cylinder 31, the movable plate 321 is pushed downward to move downward, and the spring A 323 is compressed correspondingly, so that the main punch 33 moves downward to punch a hole on the surface of the retainer body 22. The hole is effectively supported by the upper supporting block 213 to avoid excessive deformation.

[0039] Further, in the embodiment, the surface of the upper supporting block 213 is fixedly connected with a first scraper 214 and a second scraper 215 respectively. The first scraper 214 and the second scraper 215 are inclinedly arranged at a certain angle, i.e. the first scraper 214 and the second scraper 215 are oppositely arranged, and the cutting edges of the first scraper 214 and the second scraper 215 are upwardly arranged. Through the arrangement of the first scraper 214 and the second scraper 215, when the punching of a single hole is completed, the upper supporting block 213 is driven to slide on the inner wall of the retainer body 22 through the output of the electric push rod 21, and the first scraper 214 can scrape the burrs after punching. Then, the electric push rod 21 is retracted, so that the upper supporting block 213 moves reversely. At this time, the second scraper 215 oppositely arranged with the first scraper 214 can scrape the burrs in the opposite direction, effectively avoiding the problem that the burrs are not scraped clean caused by one-way scraping of the burrs, and improving the efficiency of burr-free punching to a certain extent.

[0040] As Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, the adjusting assembly includes a fixed seat 24 fixedly connected to the surface of the workbench 1, a sleeve ring 241 fixedly connected to the top of the fixed seat 24, a rotating ring 23 rotatably connected to the inner wall of the sleeve ring 241, a plurality of clamping blocks 231 for clamping the holder body 22 installed on the inner wall of the rotating ring 23, the clamping blocks 231 can be provided in a number of two or more, which are provided in two in this paper, the rotating ring 23 is connected with the clamping blocks 231 through a plurality of positioning rods 232, so that the clamping blocks 231 can slide along the positioning rods 232, a motor A 25 is fixedly connected to the surface of the fixed table 2, the output end of the motor A 25 is fixedly connected with a gear A 251, a plurality of tooth grooves matched with the gear A 251 are formed on the surface of the rotating ring 23, the output of the motor A 25 can drive the gear A 251 to rotate, thereby making the tooth grooves matched with the gear A 251 move, so that the rotating ring 23 drives the clamping blocks 231 to rotate, and the angle of the clamped holder body 22 is adjusted accordingly, facilitating continuous punching.

[0041] Further, the surface of the sleeve ring 241 is fixedly connected with a connecting pipe 242, the connecting pipe 242 is in communication with the inside of the sleeve ring 241, and the inside of the rotating ring 23 is provided with an air cavity 243, the two ends of the air cavity 243 are respectively in communication with the positioning rods 232 and the sleeve ring 241, and the connecting pipe 242 is connected with an external air pressure device.

[0042] Specifically, the external air pressure device is used to apply gas into the connecting pipe 242 and increase the pressure, the gas passes through the inside of the sleeve ring 241, the air cavity 243 and the positioning rods 232, and pushes the clamping blocks 231 to move forward on the surface of the positioning rods 232 to clamp the holder body 22, realizing pneumatic clamping, and since the sleeve ring 241 is fixed, the rotation of the rotating ring 23 will not affect the sleeve ring 241 and the connecting pipe 242.

[0043] As shown in Figure 7 and Figure 8 In this embodiment, a secondary punch 331 is arranged in the primary punch 33, the diameter of the secondary punch 331 is smaller than that of the primary punch 33, the secondary punch 331 is located at the central position inside the primary punch 33, and the top of the secondary punch 331 is fixedly connected with an adapter block 332, and the output end of the air cylinder 31 is fixedly connected with a top head 311 matched with the adapter block 332.

[0044] Further, in this embodiment, two springs B 333 are fixedly connected to the bottom of the adapter block 332, and the lower ends of the springs B 333 are fixedly connected with the primary punch 33.

[0045] Specifically, through the arrangement of the auxiliary punch 331, in the normal state, the position of the top punch 311 is matched with the adapter block 332, so that the output of the cylinder 31 drives the top punch 311 to press down the adapter block 332, and the main punch 33 is not driven to move downward. At this time, the downward adapter block 332 pushes the auxiliary punch 331 to first punch out a smaller pre-punch hole on the surface of the retainer body 22, so as to reduce the stress concentration phenomenon caused by secondary punching and the surface deformation of the retainer body 22 caused by direct punching.

[0046] The surface of the main punch 33 is fixedly connected with a gear ring 342, and the gear ring 342 is rotatably connected in the movable plate 321, and the top of the movable plate 321 is fixedly connected with a motor B 34. The output end of the motor B 34 is fixedly connected with a gear B 341, and the gear B 341 is engaged with the gear ring 342.

[0047] Specifically, after the auxiliary punch 331 finishes punching, the output of the motor B 34 drives the gear B 341 to rotate, and the gear ring 342 engaged with the gear B 341 also rotates synchronously, and drives the main punch 33 to rotate, so that the adapter block 332 rotates synchronously and adjusts the angle, and the synchronous position is staggered with the top punch 311. In this way, when the cylinder 31 continues to output, the top punch 311 moves downward, and the main punch 33 and the adapter block 332 move downward together. At this time, the main punch 33 further punches the hole position which has been punched out by the auxiliary punch 331. At this time, the punching area is smaller, which effectively reduces the punching resistance and deformation possibility, and improves the punching success rate.

[0048] The surface of the upper support block 213 is provided with a collecting groove 216 near the position of the second scraper 215. The collecting groove 216 is used to collect the burrs scraped by the second scraper 215. Then, the burrs and impurities in the collecting groove 216 can be blown out by air blowing or the like.

[0049] The side of the connecting block 212 close to the punching groove is provided as an inclined surface. By providing the side as an inclined surface, the waste retainer body 22 punched out from above can slide along the inclined surface, so that the debris is not all accumulated on the surface of the lower support block 211. A collecting groove can be formed on the surface of the workbench 1 near the bottom of the connecting block 212, which is used to collect the punching waste.

[0050] Embodiment two: The embodiment discloses a bearing retainer burr-free punching process, which comprises the following steps:

[0051] S1: The retainer to be punched is sleeved on the surfaces of the upper support block 213 and the lower support block 211, and is correspondingly clamped into the clamping block 231. An external air pressure device is used to press, so that the clamping block 231 clamps and fixes the retainer.

[0052] S2: In the initial state, the top head 311 corresponds to the connecting block 332. At this time, the cylinder 31 outputs, causing the top head 311 to contact and press down the connecting block 332. Furthermore, the connecting block 332 drives the auxiliary punch 331 to move down, first punching out a small hole on the surface of the cage, which is convenient for subsequent punching.

[0053] S3: Then the cylinder 31 retracts back to the center and starts the motor B34. The motor B34 drives the gear B341 to rotate, which in turn rotates the gear ring 342, thereby causing the main punch 33 to rotate by an angle. The connecting block 332 and the top head 311 are misaligned. At this time, the cylinder 31 outputs again, which pushes the main punch 33 and the auxiliary punch 331 to move down at the same time to punch a hole. The hole is enlarged based on the small hole punched in step S2.

[0054] S4: After enlarging a single hole, the motor A25 outputs power to drive the gear A251 to rotate, which in turn causes the rotating ring 23 to rotate, causing the cage to rotate at a certain angle, and switching to the next pre-punched hole.

[0055] S5: Repeat steps S1-S4 until all holes on the cage surface are punched.

[0056] The embodiments of the present invention have been described above. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make more equivalent embodiments under the guidance of the present embodiments, and all of them are within the protection scope of the present embodiments.

Claims

1. A burr-free punching device for bearing cages, characterized in that, include: Workbench (1), with a fixed platform (2) and a punching seat (3) respectively installed on the surface of the workbench (1); A positioning component is disposed on the surface of the fixed platform (2). The positioning component includes an electric push rod (21) fixedly connected to the surface of the fixed platform (2). A lower support block (211) is fixedly connected to the output end of the electric push rod (21). A connecting block (212) is fixedly connected to the top of the lower support block (211), and an upper support block (213) is fixedly connected through the connecting block (212). A retainer body (22) is sleeved on the side of the upper support block (213) that is far away from the lower support block (211). A punching assembly is disposed on the surface of the punching seat (3). The punching assembly includes a cylinder (31) fixedly connected to the surface of the punching seat (3). Several punching frames (32) are also fixedly connected to the surface of the punching seat (3). Several uprights (322) are fixedly connected to the top of the punching frame (32). A movable plate (321) is slidably connected to the surface of the upright (322). A main punch (33) for punching is installed on the surface of the movable plate (321). The movable plate (321) is connected to the punching frame (32) by a spring A (323). The upper support block (213) has a punch groove on its surface that is compatible with the main punch (33), and the worktable (1) is also equipped with an adjustment component for rotating the cage body (22). The main punch (33) is provided with a secondary punch (331) inside. The secondary punch (331) is located at the center of the main punch (33), and a connecting block (332) is fixedly connected to the top of the secondary punch (331). The output end of the cylinder (31) is fixedly connected with a top head (311) that is compatible with the connecting block (332). The main punch (33) is fixedly connected to a gear ring (342) and is rotatably connected to the movable plate (321) through the gear ring (342). The top of the movable plate (321) is fixedly connected to a motor B (34), and the output end of the motor B (34) is fixedly connected to a gear B (341). The gear B (341) meshes with the gear ring (342).

2. The burr-free punching device for bearing cages according to claim 1, characterized in that, The upper support block (213) is fixedly connected with a first scraper (214) and a second scraper (215), and the first scraper (214) and the second scraper (215) are inclined at a certain angle.

3. The burr-free punching device for bearing cages according to claim 1, characterized in that, The adjustment assembly includes a fixed base (24) fixedly connected to the surface of the workbench (1). A collar (241) is fixedly connected to the top of the fixed base (24). A rotating ring (23) is rotatably connected to the inner wall of the collar (241). Several clamping blocks (231) for clamping the holder body (22) are installed on the inner wall of the rotating ring (23). The rotating ring (23) is connected to the clamping blocks (231) through several positioning rods (232). A motor A (25) is fixedly connected to the surface of the fixed table (2). A gear A (251) is fixedly connected to the output end of the motor A (25). Several tooth grooves adapted to the gear A (251) are opened on the surface of the rotating ring (23).

4. The burr-free punching device for bearing cages according to claim 3, characterized in that, A connecting pipe (242) is fixedly connected to the surface of the collar (241). The connecting pipe (242) and the collar (241) are connected internally. An air chamber (243) is opened inside the rotating ring (23). The two ends of the air chamber (243) are connected to the positioning rod (232) and the collar (241) respectively. The connecting pipe (242) is connected to an external pneumatic device.

5. The burr-free punching device for bearing cages according to claim 1, characterized in that, Two springs B (333) are fixedly connected to the bottom of the connecting block (332), and the lower end of the springs B (333) is fixedly connected to the main punch (33).

6. The burr-free punching device for bearing cages according to claim 2, characterized in that, A collection groove (216) is provided on the surface of the upper support block (213) near the second scraper (215).

7. The burr-free punching device for bearing cages according to claim 1, characterized in that, The side of the connecting block (212) near the punch groove is set as an inclined surface.

8. A burr-free punching process for bearing cages, applied in the burr-free punching device for bearing cages as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: The cage that needs to be punched is fitted onto the surface of the upper support block (213) and the lower support block (211), and is correspondingly inserted into the clamping block (231). The external pneumatic device is used to pressurize the clamping block (231) to clamp and fix the cage. S2: In the initial state, the top head (311) corresponds to the connecting block (332). At this time, the cylinder (31) outputs, causing the top head (311) to contact and press down the connecting block (332). Furthermore, the connecting block (332) drives the auxiliary punch (331) to move down, first punching out a small hole on the surface of the cage, which is convenient for subsequent punching. S3: Then the cylinder (31) retracts and returns to center, and starts the motor B (34). The motor B (34) drives the gear B (341) to rotate, and in conjunction with the gear ring (342) to rotate, thereby causing the main punch (33) to rotate by an angle. The connecting block (332) and the top head (311) are misaligned. At this time, the cylinder (31) outputs again, which will push the main punch (33) and the auxiliary punch (331) to move down at the same time to punch holes. The holes are enlarged based on the small holes punched in step S2. S4: After expanding a single hole, the output of motor A (25) drives gear A (251) to rotate, which in turn makes the rotating ring (23) rotate, causing the cage to rotate at a certain angle, and switching to the next pre-punched hole; S5: Repeat steps S1-S4 until all holes on the cage surface are punched.

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