An adaptive float mechanism

Abstract

The application discloses a self-adaptive floating mechanism and relates to the technical field of riveting equipment.The self-adaptive floating mechanism comprises a fixed seat, a mandrel, a rivet bolt, a spherical joint mechanism and a horizontal floating mechanism, the fixed seat is internally provided with the spherical joint mechanism and the horizontal floating mechanism, one end of the mandrel is connected with the spherical joint mechanism, the horizontal floating mechanism is sleeved on the periphery of the mandrel, the other end of the mandrel is connected with the rivet bolt, and the mandrel can swing around the central axis thereof and float on a horizontal plane.In the application, the bearing disc, the cylindrical roller bearing and the thrust ball bearing are arranged, so that the free floating in the horizontal XY direction is realized, the problem that the correction ability is weak is solved, the problem that the independent horizontal floating in the XY direction cannot be performed is solved, and the self-adaptive guiding is realized, so that the problem that the rivet bolt and the nut are eccentric and the angle is inclined to be blocked during the riveting and the withdrawing process due to the inability to freely correct is solved.

Description

Technical Field

[0001] This invention relates to the field of riveting equipment technology, and in particular to an adaptive floating mechanism. Background Technology

[0002] As automotive factories become increasingly automated, more and more riveting stations require automated riveting robots to improve energy efficiency, reduce labor costs, and lower the quality of manual riveting connections. However, compared to manual riveting, robotic riveting lacks flexibility. In actual riveting processes, the riveting gun head is not necessarily perpendicular to the plane of the hole. When this is not the case, the riveting gun is prone to jamming during the unriveting process. Based on these shortcomings, it is necessary to improve existing technologies and design an adaptive floating mechanism for riveting. Summary of the Invention

[0003] The purpose of this invention is to provide an adaptive floating mechanism to solve the above-mentioned technical problems.

[0004] The technical solution adopted in this invention is as follows:

[0005] An adaptive floating mechanism includes a fixed base, a mandrel, a rivet bolt, a ball joint mechanism, and a horizontal floating mechanism. The ball joint mechanism and the horizontal floating mechanism are disposed inside the fixed base. One end of the mandrel is connected to the ball joint mechanism. The horizontal floating mechanism is sleeved around the mandrel. The other end of the mandrel is connected to the rivet bolt. The mandrel is capable of swinging around its own central axis and floating on a horizontal plane.

[0006] Preferably, the device also includes a fixing plate and a tie rod, with the fixing plate disposed at the upper end of the fixing seat, and the tie rod passing through the fixing plate and connected to the ball joint mechanism.

[0007] Preferably, the ball joint mechanism includes a first ball joint and a first joint sleeve, wherein the first ball joint is disposed inside the first joint sleeve.

[0008] As a further preferred embodiment, the device also includes a second ball joint and a second joint sleeve, one end of which extends into the second joint sleeve and is rotatably connected to the first ball joint, and the other end of the second joint sleeve is provided with the second ball joint.

[0009] As a further preferred embodiment, the device also includes a connecting sleeve, one end of which is disposed within the connecting sleeve, and one end of which is rotatably connected to the second ball joint.

[0010] As a further preferred embodiment, it also includes a centering elastic push-pull rod, wherein an installation hole is provided on the outer wall of the fixing seat, the centering elastic push-pull rod is disposed in the installation hole, and one end of the centering elastic push-pull rod abuts against the outer wall of the connecting sleeve.

[0011] Preferably, the horizontal floating mechanism includes a bearing disc and a cylindrical roller bearing, wherein the cylindrical roller bearing is disposed inside the bearing disc and is sleeved around the mandrel.

[0012] As a further preferred embodiment, the bearing also includes a first thrust ball bearing and a second thrust ball bearing, which are disposed at both ends of the bearing disc.

[0013] The above technical solution has the following advantages or beneficial effects:

[0014] In this invention, the entire floating part is integrated into the head of the rivet gun, and flexible floating is achieved through a ball joint mechanism, which solves the problems of insufficient floating performance and floating instability, thereby solving the jamming problem caused by the eccentricity of the rivet bolt and the workpiece nut during the riveting process.

[0015] In this invention, the arrangement of bearing disc, cylindrical roller bearing and thrust ball bearing enables free floating in the horizontal XY direction, solving the problem of weak correction capability and inability to independently float horizontally in the XY direction. It also enables adaptive correction, thereby solving the problem of eccentricity and angle tilting of the rivet bolt and nut during the riveting and unriveting process due to the inability to freely correct the deviation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the adaptive floating mechanism in this invention;

[0017] Figure 2 This is a schematic diagram of the rivet bolt and nut assembly in this invention;

[0018] Figure 3 This is a schematic diagram of the adaptive floating mechanism in this invention.

[0019] In the diagram: 1. Fixed seat; 2. Mandrel; 3. Rivet bolt; 4. Ball joint mechanism; 401. First ball joint; 402. First joint sleeve; 403. Second ball joint; 404. Second joint sleeve; 405. Connecting sleeve; 406. Centering elastic push-pull rod; 5. Horizontal floating mechanism; 501. Bearing disc; 502. Cylindrical roller bearing; 503. First thrust ball bearing; 504. Second thrust ball bearing; 6. Nut; 7. Fixed plate; 8. Pull rod. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Figure 1 This is a schematic diagram of the internal structure of the adaptive floating mechanism in this invention; Figure 2 This is a schematic diagram of the rivet bolt and nut assembly in this invention; Figure 3 This is a schematic diagram of the adaptive floating mechanism in this invention. Please refer to [link / reference]. Figures 1 to 3 The diagram illustrates a preferred embodiment of an adaptive floating mechanism, comprising a fixed base 1, a spindle 2, a rivet bolt 3, a ball joint mechanism 4, and a horizontal floating mechanism 5. The fixed base 1 houses the ball joint mechanism 4 and the horizontal floating mechanism 5. One end of the spindle 2 is connected to the ball joint mechanism 4, and the horizontal floating mechanism 5 is sleeved around the spindle 2. The other end of the spindle 2 is connected to the rivet bolt 3. The spindle 2 is capable of swinging around its central axis and floating on a horizontal plane. See also... Figure 1As shown, the ball joint mechanism 4 and the horizontal floating mechanism 5 are installed inside the fixed base 1, with the horizontal floating mechanism 5 located below the ball joint mechanism 4. The ball joint mechanism 4 allows the mandrel 2 to swing freely around its central axis, solving the problems of insufficient floating performance and unstable floating, thus resolving the jamming problem caused by the eccentricity between the rivet bolt 3 and the workpiece nut 6 during the riveting process. The horizontal floating mechanism 5 allows the mandrel 2 to float freely on the horizontal plane. Combined with the chamfered end of the nut 6, it automatically guides the position of the rivet bolt 3 on the mandrel 2, thus solving the problem of the rivet bolt 3 and nut 6 becoming eccentric or tilted and stuck during riveting and unhooking due to the inability to freely correct its position.

[0024] Furthermore, as a preferred embodiment, it also includes a fixing plate 7 and a pull rod 8. The fixing plate 7 is provided at the upper end of the fixing seat 1, and the pull rod 8 passes through the fixing plate 7 and is connected to the ball joint mechanism 4. In this embodiment, the pull rod 8 can move relative to the fixing seat 1 and the fixing plate 7, and the ball joint mechanism 4 can be moved by the pull rod 8, so that the ball joint mechanism 4 can pull the spindle 2 to move.

[0025] Furthermore, as a preferred embodiment, the ball joint mechanism 4 includes a first ball joint 401 and a first joint sleeve 402, with the first ball joint 401 disposed inside the first joint sleeve 402. See also Figure 1 As shown, the upper end of the first joint sleeve 402 is connected to the tie rod 8 by bolts, while the first ball joint 401 is fixed inside the first joint sleeve 402 by a second bolt.

[0026] Furthermore, as a preferred embodiment, it also includes a second ball joint 403 and a second joint sleeve 404. One end of the second joint sleeve 404 extends into the first ball joint 401 and is rotatably connected thereto. The other end of the second joint sleeve 404 is internally provided with the second ball joint 403. The upper end of the second joint sleeve 404 is connected to the first ball joint 401. See [reference needed]. Figure 1 As shown, the first ball joint 401 is located inside the upper end of the second joint sleeve 404. The second joint sleeve 404 can rotate relative to the first ball joint 401, which facilitates the second joint sleeve 404 to swing around its own central axis.

[0027] Furthermore, as a preferred embodiment, a connecting sleeve 405 is also included. One end of the spindle 2 is disposed within the connecting sleeve 405, and one end of the connecting sleeve 405 is rotatably connected to the second ball joint 403. The connecting sleeve 405 is used to connect the second ball joint 403 and the spindle 2. A floating gap exists between the upper outer edge of the connecting sleeve 405 and the inner wall of the fixed base 1, which facilitates the swinging of the connecting sleeve 405 along its own central axis.

[0028] See Figure 1 As shown, it also includes a centering elastic push-pull rod 406. A mounting hole is provided on the outer wall of the fixed base 1, and the centering elastic push-pull rod 406 is disposed within the mounting hole. One end of the centering elastic push-pull rod 406 abuts against the outer wall of the connecting sleeve 405. The centering elastic push-pull rod 406 is used to abut against the outer wall of the connecting sleeve 405, enabling the connecting sleeve 405 to automatically reset, thereby allowing the oscillating spindle 2 to automatically return to its original position.

[0029] Furthermore, as a preferred embodiment, the horizontal floating mechanism 5 includes a bearing disk 501 and cylindrical roller bearings 502. The cylindrical roller bearings 502 are disposed inside the bearing disk 501 and are sleeved around the mandrel 2. In this embodiment, it also includes a first thrust ball bearing 503 and a second thrust ball bearing 504, which are disposed at both ends of the bearing disk 501. The cylindrical roller bearings 502 allow the mandrel 2 to rotate freely. A gap exists between the outer wall of the bearing disk 501 and the inner wall of the fixed base 1, and the arrangement of the first thrust ball bearings 503 and the second thrust ball bearings 504 allows the bearing disk 501 to drive the mandrel 2 to float freely on the horizontal plane.

[0030] In use, the pull rod 8 can drive the spindle 2 to move up and down, and the spindle 2 drives the rivet bolt 3 to move axially, so that the rivet bolt 3 enters the nut 6. During the process of the rivet bolt 3 entering the nut 6, if there is a horizontal eccentricity between the rivet bolt 3 and the nut 6 below, the rivet bolt 3 drives the spindle 2, the cylindrical roller bearing 502 and the bearing disc 501 to move horizontally along the XY direction on the horizontal plane through the rolling of the first thrust ball bearing 503 and the second thrust ball bearing 504. When the nut 6 is not completely perpendicular to the rivet bolt 3 and there is a certain angle of deviation, during the process of the rivet bolt 3 descending and engaging with the nut 6, the rivet bolt 3 will passively engage perpendicularly with the fixed nut 6, thereby causing the spindle 2, the inner ring of the self-aligning cylindrical roller bearing, the first ball joint 401 and the second ball joint 403 to swing at a certain angle, so that the rivet bolt 3 adapts to the angle deviation.

[0031] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. An adaptive floating mechanism, characterized in that, It includes a fixed base, a mandrel, a rivet bolt, a ball joint mechanism, and a horizontal floating mechanism. The ball joint mechanism and the horizontal floating mechanism are arranged inside the fixed base. One end of the mandrel is connected to the ball joint mechanism. The horizontal floating mechanism is sleeved around the mandrel. The other end of the mandrel is connected to the rivet bolt. The mandrel can swing around its own central axis and float on the horizontal plane.

2. The adaptive floating mechanism as described in claim 1, characterized in that, It also includes a fixing plate and a tie rod. The fixing plate is provided at the upper end of the fixing seat, and the tie rod passes through the fixing plate and is connected to the ball joint mechanism.

3. The adaptive floating mechanism as described in claim 1, characterized in that, The ball joint mechanism includes a first ball joint and a first joint sleeve, wherein the first ball joint is disposed inside the first joint sleeve.

4. The adaptive floating mechanism as described in claim 3, characterized in that, It also includes a second ball joint and a second joint sleeve, one end of the second joint sleeve extends into the second joint sleeve and is rotatably connected to the first ball joint, and the other end of the second joint sleeve is provided with the second ball joint.

5. The adaptive floating mechanism as described in claim 4, characterized in that, It also includes a connecting sleeve, one end of the mandrel is disposed inside the connecting sleeve, and one end of the connecting sleeve is rotatably connected to the second ball joint.

6. The adaptive floating mechanism as described in claim 5, characterized in that, It also includes a centering elastic push-pull rod, and the outer wall of the fixed base is provided with an installation hole. The centering elastic push-pull rod is disposed in the installation hole, and one end of the centering elastic push-pull rod abuts against the outer wall of the connecting sleeve.

7. The adaptive floating mechanism as described in claim 1, characterized in that, The horizontal floating mechanism includes a bearing disc and a cylindrical roller bearing. The cylindrical roller bearing is disposed inside the bearing disc and is sleeved around the mandrel.

8. The adaptive floating mechanism as described in claim 7, characterized in that, It also includes a first thrust ball bearing and a second thrust ball bearing, which are disposed at both ends of the bearing disc.

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