A floating device for a rivet flywheel and method of use

Abstract

This invention relates to the field of flywheel riveting technology, and proposes a floating device for riveting flywheels and its usage method. The device includes a support base with four sets of support columns fixedly installed on it. A processing table is fixedly installed on each support column, and a placement platform for placing the flywheel to be riveted is fixedly installed on the processing platform. A pressure sensor for detecting the pressure on the flywheel is installed on the placement platform, and four sets of primary electric telescopic rods are fixedly installed on the processing platform. This invention synchronously activates the four sets of secondary electric telescopic rods to move the pressure plate downwards, bringing it into contact with the large end of the rivet and limiting one end of the rivet. Then, it synchronously activates the four sets of primary electric telescopic rods to move the pressure plate and collar upwards, simultaneously compressing multiple sets of rivets, thereby completing the rapid riveting of the flywheel. This avoids the situation where uneven lifting force of the floating block prevents the equipment from being compatible with flywheels of different sizes and weights.

Description

Technical Field

[0001] This invention relates to the field of flywheel riveting technology, specifically to a floating device for riveting flywheels and its usage method. Background Technology

[0002] Flywheels are components that store kinetic energy using rotational inertia. They store energy during the power stroke of an engine and release it during energy-consuming strokes such as exhaust or compression, balancing crankshaft speed fluctuations. Given the importance of flywheel components, precision inspection during the production process is particularly crucial. During the assembly of two sets of flywheels, rivets are typically used to join them together to enhance connection reliability. Traditional riveting equipment often employs rigid positioning fixtures, but flywheel blanks have casting tolerances, and rigid fixtures can easily lead to uneven riveting force distribution, causing localized loose connections. Flexible riveting equipment, on the other hand, needs to resolve the contradiction between "floating compensation" and "compatibility." With the development of new energy vehicles and high-precision industrial equipment, flywheels are evolving towards lightweight, thin-walled, and multi-material composite structures, which places higher demands on the precision and stability of the riveting process.

[0003] Patent document CN221870158U discloses a floating device for riveting flywheels. The protected claim "includes a mold frame mounted on a machine frame, the mold frame including an upper mold plate and a lower mold plate, at least four hydraulic telescopic rods provided between the upper and lower mold plates, a first positioning mechanism provided at the center of the lower mold plate, a floating block sleeved on the outside of the first positioning mechanism, at least one spring provided at the bottom of the floating block, the bottom of the spring connected to the lower mold plate, a second positioning mechanism sleeved on the outside of the floating block, and the floating block capable of vertical and vertical movement." This invention not only ensures that the rivet head fits snugly against the upper mold during riveting, but also that the rivet protrusion connects two or more stacked parts using its own deformation or interference fit, achieving one-time clamping and convenient inspection, but also has a simple structure, is easy to operate, and improves the efficiency of flywheel processing. However, in use, the core power source of this device is a common metal spring, which is insufficient for industrial-scale production. During production, riveting equipment typically reciprocates at extremely high frequencies. Under long-term high-frequency dynamic compression, springs are prone to plastic deformation or even fatigue fracture. Once the spring weakens or breaks, the lifting force of the floating block will decrease or become uneven, directly causing tiny gaps between the rivet head and the upper die. This can ultimately lead to batch quality accidents such as incomplete riveting or loosening. When the spring fails, because the structure is designed inside the mold frame and surrounded by the first and second positioning mechanisms, maintenance personnel must disassemble the relevant components to replace the spring. Furthermore, modern automotive parts production often pursues "platformization," meaning that a production line needs to be compatible with various flywheels of different sizes and weights. However, this patent uses the initial tension of a physical spring. If a heavier flywheel is replaced, insufficient spring preload will cause the floating block to be instantly crushed, losing its floating function. If a lighter flywheel is replaced, the spring force may be too large, causing the flywheel to be squeezed and deformed during the riveting process. This cannot meet the needs of today's flexible and intelligent production lines. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a floating device for riveted flywheels and its usage method, which solves the problem that uneven lifting force of the floating block causes the device to be incompatible with flywheels of various sizes and weights.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A floating device for riveting flywheels includes a support base, on which four sets of support columns are fixedly installed. A processing table is fixedly installed on each support column. A placement platform for placing the flywheel to be riveted is fixedly installed on the processing table. A pressure sensor for detecting the pressure on the flywheel is installed on the placement platform. Four sets of first-order electric telescopic rods are fixedly installed on the processing table. A pressure ring for applying pressure to the rivet is fixedly installed at the movable end of each first-order electric telescopic rod. The support base is equipped with a riveting mechanism to prevent deformation of the flywheel during the riveting process, and the pressure ring is equipped with an adjustment mechanism to adjust the riveting position of the flywheel.

[0006] Preferably, the riveting mechanism includes multiple sets of collars nested inside the pressure ring, and the height of the collars is the same as the height of the pressure ring. Each set of collars is fixedly equipped with four sets of limiting posts that are slidably connected to the processing table.

[0007] Preferably, the riveting mechanism further includes three sets of connecting holes evenly spaced on the collar, and the pressure ring is threaded with three sets of threaded posts that cooperate with the connecting holes.

[0008] Preferably, the riveting mechanism further includes four sets of second electric telescopic rods fixedly installed on the support column, and a portion of the second electric telescopic rod is located inside the processing table. The movable end of the second electric telescopic rod is fixedly installed with a pressure plate that cooperates with the pressure ring.

[0009] Preferably, the adjusting mechanism includes a bearing fixedly mounted on a processing table, and a helical gear ring fixedly connected to the bearing is rotatably mounted on the processing table.

[0010] Preferably, the adjustment mechanism further includes three sets of connecting helical teeth rotatably mounted on the processing table and threadedly connected to the threaded column, and the connecting helical teeth mesh with the helical tooth ring, and a fixing plate is fixedly mounted on each set of threaded columns.

[0011] Preferably, the adjusting mechanism further includes six sets of limiting rods fixedly installed on the pressure ring, and the limiting rods are located on both sides of the threaded column, and the limiting rods are slidably connected to the fixing plate.

[0012] Preferably, a drive motor is fixedly mounted on the pressure ring, and a drive helical gear is fixedly mounted on the output end of the drive motor, and the drive helical gear meshes with the helical gear ring.

[0013] A method of using a floating device for riveting a flywheel, the method comprising the following steps: Step 1: Place the two sets of flywheels that need to be riveted on the placement table and align them in the correct positions. At this time, the pressure sensor on the placement table senses the weight of the flywheels and displays the value on the external display. Insert multiple sets of rivets into the two sets of aligned flywheels. Step 2: Start the drive motor to make the drive helical gear rotate, which drives the three sets of connecting helical gears to rotate synchronously. Under the action of the limit rod and the fixing plate, the connecting helical gears rotate on the threaded column, causing the threaded column to move inside the pressure ring and insert into the connecting hole on the collar. Step 3: Simultaneously start the four sets of No. 2 electric telescopic rods to move the pressure plate downwards, so that the pressure plate contacts the large end of the rivet. At this time, the pressure sensor will detect the large change in gravity and quickly react to the control device, so that the four sets of No. 2 electric telescopic rods stop moving. Step 4: Simultaneously activate the four sets of No. 1 electric telescopic rods to move the pressure plate and collar upwards, simultaneously pressing multiple sets of rivets to complete the rapid riveting of the flywheel.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the setting of the riveting mechanism, synchronously activates four sets of No. 2 electric telescopic rods to move the pressure plate downward, so that the pressure plate contacts the large end of the rivet, limiting one end of the rivet. Then, synchronously activates four sets of No. 1 electric telescopic rods to move the pressure plate and collar upward, simultaneously squeezing multiple sets of rivets, thereby completing the rapid riveting of the flywheel. This avoids the situation where uneven lifting force of the floating block causes the equipment to be incompatible with flywheels of different sizes and weights.

[0015] 2. By adjusting the mechanism, the present invention drives the drive motor to rotate the drive helical teeth, which in turn drives the three sets of connecting helical teeth to rotate synchronously. The connecting helical teeth rotate on the threaded column, causing the threaded column to move inside the pressure ring. The threaded column is inserted into the connecting hole on the collar, which can drive different numbers of collars to move synchronously. This avoids the situation where the rivets cannot be fully compacted, causing the two sets of flywheels that need to be riveted to shake against each other.

[0016] 3. In this invention, two sets of flywheels that need to be riveted are placed on a placement platform. At this time, the pressure sensor on the placement platform senses the weight of the flywheels and displays the value on the external display. When the pressure plate squeezes the rivets on the flywheels, the pressure sensor senses a large change in gravity and quickly reacts to the control device, causing the four sets of No. 2 electric telescopic rods to stop moving, preventing excessive pressure from deforming the flywheels. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention from a first-view perspective; Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective; Figure 3 This is a schematic diagram of the overall internal structure of the support column of the present invention; Figure 4 This is a schematic diagram of the overall internal structure of the processing table of the present invention; Figure 5 This is a schematic diagram of the overall internal structure of the pressure ring of the present invention.

[0018] In the diagram: 1. Support base; 101. Support column; 102. Processing table; 103. Placement table; 104. Electric telescopic rod No. 1; 105. Pressure ring; 2. Riveting mechanism; 201. Collar; 202. Limiting post; 203. Connecting hole; 204. Threaded post; 205. Electric telescopic rod No. 2; 206. Pressure plate; 3. Adjustment mechanism; 301. Bearing; 302. Helical tooth ring; 303. Connecting helical tooth; 304. Fixing plate; 305. Limiting rod; 4. Drive motor; 401. Drive helical tooth. Detailed Implementation

[0019] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0020] Example 1 Because the uneven lifting force of the floating blocks makes the equipment incompatible with flywheels of various sizes and weights, in order to solve this problem, refer to... Figures 1-5 This embodiment proposes a floating device for riveting flywheels, including a support base 1. The bottom of the support base 1 is equipped with a shock-absorbing pad to reduce vibration during equipment operation. Four sets of support columns 101 are fixedly installed on the support base 1. The support columns 101 are made of 40Cr alloy steel and have undergone heat treatment. A processing table 102 is fixedly installed on the support columns 101, supported by the four sets of support columns 101. A placement platform 103 for placing the flywheels to be riveted is fixedly installed on the processing platform 102, preventing flywheels of different weights and sizes from being riveted. A pressure sensor is installed on the placement platform 103 to detect the pressure on the flywheels, preventing pressure from being applied during the rivet positioning process. In case the flywheel deforms due to excessive size, four sets of No. 1 electric telescopic rods 104 are fixedly installed on the processing table 102. The movable end of the No. 1 electric telescopic rod 104 is fixedly installed with a pressure ring 105 for applying pressure to the rivet. The four sets of No. 1 electric telescopic rods 104 are started or stopped by the same switch. The synchronous start of the four sets of No. 1 electric telescopic rods 104 can drive the pressure ring 105 to move up and down. The support base 1 is equipped with a riveting mechanism 2 to prevent the flywheel from deforming during the riveting process, so that the riveting of flywheels of different weights is more stable. The pressure ring 105 is equipped with an adjustment mechanism 3 to adjust the riveting position of the flywheel, so that the riveting of flywheels of different sizes is more stable.

[0021] The riveting mechanism 2 includes multiple sets of collars 201 nested within the pressure ring 105, with the height of the collars 201 matching the height of the pressure ring 105 to ensure the flatness of the pressure surface. The number of collars 201 connected to the pressure ring 105 can be adjusted via the adjusting mechanism 3, thereby adjusting the area of ​​pressure applied to the flywheel. Each set of collars 201 is fixedly equipped with four sets of limiting posts 202 that are slidably connected to the processing table 102, making the collars 201 more stable during vertical movement. The riveting mechanism 2 also includes three sets of connecting holes 203 evenly spaced on the collars 201, and screws on the pressure ring 105... The riveting mechanism 2 includes three sets of threaded posts 204 that mate with the connecting holes 203. The connecting holes 203 on the multiple sets of collars 201 are arranged in a straight line to facilitate the connection of the threaded posts 204. The limiting post 202 can prevent the collars 201 from deflecting during movement and causing misalignment of the connecting holes 203. The riveting mechanism 2 also includes four sets of second electric telescopic rods 205 fixedly installed on the support column 101. Part of the second electric telescopic rod 205 is located inside the processing table 102. The movable end of the second electric telescopic rod 205 is fixedly installed with a pressure ring 105. The pressure plate 206 and four sets of No. 2 electric telescopic rods 205 are started or stopped by the same switch. Synchronous activation of the four sets of No. 2 electric telescopic rods 205 moves the pressure plate 206 up and down, limiting the rivets on the flywheels. The two sets of flywheels to be riveted are placed on the placement platform 103 on the processing table 102 and aligned. At this time, the pressure sensor on the placement platform 103 senses the weight of the flywheels and displays the value on the external display. The equipment is then in working mode. Multiple sets of rivets are inserted into the two aligned flywheels, and the four sets of No. 2 electric telescopic rods 205 are activated simultaneously, causing the pressure plate 206 to move up and down. The downward movement causes the pressure plate 206 to contact the large end of the rivet. At this point, the pressure sensor detects a significant change in gravity and quickly relays this information to the control device, causing the four sets of second-stage electric telescopic rods 205 to stop moving. This limits one end of the rivet and prevents excessive pressure from deforming the flywheel. Simultaneously, the four sets of first-stage electric telescopic rods 104 are activated, causing the pressure plate 206 and collar 201 to move upward, simultaneously pressing multiple sets of rivets. This completes the rapid riveting of the flywheel and avoids the situation where uneven lifting force of the floating block prevents the equipment from being compatible with flywheels of different sizes and weights. Example 2 Since most flywheels are structured with a thicker center, thinner middle section, and thicker outer edge, and the riveting is also done on the outer edge, if the outer edge of the flywheel is thinner than the center, and the pressing position of the extrusion device is flush with the center of the flywheel, there will be a gap between the extrusion device and the outer edge of the flywheel. This can result in the rivets not being fully compacted, causing the two sets of flywheels that need to be riveted to wobble. To solve this problem, refer to... Figures 1-5The adjusting mechanism 3 includes a bearing 301 fixedly mounted on the processing table 102. A helical gear ring 302 fixedly connected to the bearing 301 is rotatably mounted on the processing table 102. The bearing 301 makes the rotation of the helical gear ring 302 within the processing table 102 more stable. The adjusting mechanism 3 also includes three sets of connecting helical teeth 303 rotatably mounted on the processing table 102 and threadedly connected to the threaded post 204. The connecting helical teeth 303 mesh with the helical gear ring 302. The rotation of the helical gear ring 302 can drive the three sets of connecting helical teeth 303 to rotate synchronously within the processing table 102. A fixing plate 304 is fixedly mounted on each threaded post 204. The adjusting mechanism 3 also includes six sets of limiting rods 305 fixedly mounted on the pressure ring 105. The limiting rods 305 are located on both sides of the threaded post 204. The limiting rods 305 are slidably connected to the fixing plate 304, making the movement of the threaded post 204 more stable. The limiting rods 305 are marked with units of length. To facilitate observation of the movement distance of the threaded post 204, a drive motor 4 is fixedly installed on the pressure ring 105. A drive helical gear 401 is fixedly installed at the output end of the drive motor 4, and the drive helical gear 401 meshes with the helical gear ring 302. When it is necessary to adjust the pressure area on the flywheel, the drive motor 4 is started to make the drive helical gear 401 rotate. The rotation of the drive helical gear 401 drives the helical gear ring 302 to rotate. The rotation of the helical gear ring 302 drives the three sets of connecting helical gears 303 to rotate synchronously. Under the action of the limit rod 305 and the fixing plate 304, the connecting helical gears 303 rotate on the threaded post 204, causing the threaded post 204 to move inside the pressure ring 105. The threaded post 204 is inserted into the connecting hole 203 on the collar 201, which can drive different numbers of collars 201 to move synchronously. This facilitates the riveting and pressing of flywheels of different sizes, and can press the rivets into place, avoiding the situation where the two sets of flywheels that need to be riveted cannot be fully pressed and thus shake each other.

[0022] Working principle: The two sets of flywheels to be riveted are placed on the placement platform 103 on the processing table 102 and aligned. At this time, the pressure sensor on the placement platform 103 senses the weight of the flywheels and displays the value on the external display. The equipment is then in working condition. Multiple sets of rivets are inserted into the two aligned flywheels. When it is necessary to adjust the pressure area on the flywheels, the drive motor 4 is started, causing the drive helical gear 401 to rotate. The rotation of the drive helical gear 401 drives the helical gear ring 302 to rotate. The rotation of the helical gear ring 302 drives the three sets of connecting helical gears 303 to rotate synchronously. Under the action of the limit rod 305 and the fixing plate 304, the connecting helical gears 303 rotate on the threaded post 204, causing the threaded post 204 to move within the pressure ring 105. The threaded post 204 inserts into the connecting hole 203 on the collar 201, which can carry... Different numbers of collars 201 move synchronously to facilitate riveting and pressing flywheels of different sizes. This ensures the rivets are firmly pressed into place. Simultaneously, four sets of second-generation electric telescopic rods 205 are activated, causing the pressure plate 206 to move downwards and contact the large end of the rivet. At this point, the pressure sensor detects a significant change in gravity and quickly relays this information to the control device, causing the four sets of second-generation electric telescopic rods 205 to stop moving. This limits one end of the rivet and prevents excessive pressure from deforming the flywheel. Then, four sets of first-generation electric telescopic rods 104 are activated simultaneously, causing the pressure plate 206 and collars 201 to move upwards, simultaneously pressing multiple sets of rivets. This completes the rapid riveting of the flywheel and avoids the situation where uneven lifting force of the floating block prevents the equipment from being incompatible with flywheels of different sizes and weights.

[0023] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A floating device for riveting flywheels, comprising a support seat (1), characterized in that, Four sets of support columns (101) are fixedly installed on the support base (1). A processing table (102) is fixedly installed on the support column (101). A placement table (103) for placing the flywheel to be riveted is fixedly installed on the processing table (102). A pressure sensor for detecting the pressure on the flywheel is installed on the placement table (103). Four sets of No. 1 electric telescopic rods (104) are fixedly installed on the processing table (102). A pressure ring (105) for applying pressure to the rivet is fixedly installed on the movable end of the No. 1 electric telescopic rod (104). The support base (1) is equipped with a riveting mechanism (2) to prevent the flywheel from deforming during the riveting process, and the pressure ring (105) is equipped with an adjustment mechanism (3) to adjust the riveting position of the flywheel.

2. The floating device for riveted flywheel according to claim 1, characterized in that, The riveting mechanism (2) includes multiple sets of collars (201) that are nested inside the pressure ring (105), and the height of the collars (201) is the same as the height of the pressure ring (105). Each set of collars (201) is fixedly equipped with four sets of limiting posts (202) that are slidably connected to the processing table (102).

3. The floating device for riveted flywheel according to claim 2, characterized in that, The riveting mechanism (2) also includes three sets of connecting holes (203) evenly opened on the collar (201), and the pressure ring (105) is threaded with three sets of threaded posts (204) that cooperate with the connecting holes (203).

4. The floating device for riveted flywheel according to claim 3, characterized in that, The riveting mechanism (2) also includes four sets of second electric telescopic rods (205) fixedly installed on the support column (101), and a part of the second electric telescopic rods (205) is located in the processing table (102). The movable end of the second electric telescopic rod (205) is fixedly installed with a pressure plate (206) that cooperates with the pressure ring (105).

5. The floating device for riveted flywheel according to claim 1, characterized in that, The adjustment mechanism (3) includes a bearing (301) fixedly installed on the processing table (102), and a helical gear ring (302) fixedly connected to the bearing (301) is rotatably installed on the processing table (102).

6. The floating device for riveted flywheel according to claim 5, characterized in that, The adjustment mechanism (3) further includes three sets of connecting helical teeth (303) that are rotatably mounted on the processing table (102) and threadedly connected to the threaded column (204), and the connecting helical teeth (303) mesh with the helical tooth ring (302). Each set of threaded columns (204) is fixedly mounted with a fixing plate (304).

7. A floating device for riveting a flywheel according to claim 6, characterized in that, The adjustment mechanism (3) also includes six sets of limiting rods (305) fixedly installed on the pressure ring (105), and the limiting rods (305) are located on both sides of the threaded column (204). The limiting rods (305) are slidably connected to the fixing plate (304).

8. The floating device for riveting a flywheel according to claim 7, characterized in that, A drive motor (4) is fixedly installed on the pressure ring (105). A drive helical tooth (401) is fixedly installed at the output end of the drive motor (4), and the drive helical tooth (401) meshes with the helical tooth ring (302).

9. A method of using a floating device for riveted flywheels, characterized in that, A floating device comprising a riveted flywheel according to any one of claims 1-8, and comprising the following steps: Step 1: Place the two sets of flywheels that need to be riveted on the placement platform (103) and align them. At this time, the pressure sensor on the placement platform (103) senses the weight of the flywheel and displays the value on the external display. Insert multiple sets of rivets into the two sets of aligned flywheels. Step 2: Start the drive motor (4) to make the drive helical gear (401) rotate and drive the three sets of connecting helical gears (303) to rotate synchronously. Under the action of the limit rod (305) and the fixing plate (304), the connecting helical gear (303) rotates on the threaded column (204) so ​​that the threaded column (204) moves in the pressure ring (105) and the threaded column (204) is inserted into the connecting hole (203) on the collar (201); Step 3: Simultaneously start the four sets of No. 2 electric telescopic rods (205) to move the pressure plate (206) downward, so that the pressure plate (206) contacts the large end of the rivet. At this time, the pressure sensor will quickly respond to the control device when it senses a large change in gravity, so that the four sets of No. 2 electric telescopic rods (205) stop moving. Step 4: Simultaneously start the four sets of No. 1 electric telescopic rods (104) to move the pressure plate (206) and collar (201) upward, and simultaneously squeeze multiple sets of rivets to complete the rapid riveting of the flywheel.

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