A clamp universal positioning device

Abstract

The utility model relates to welding equipment technical field, more particularly, a kind of fixture universal positioning device is provided.The fixture universal positioning device, including base and multiple positioning components;Positioning component is arranged around the circumference of the set circle center on base;Positioning component includes locating ball, ball head seat and rotating pin;Ball head seat is set on base, and mounting groove is provided on ball head seat, and locating ball is rotated in mounting groove by rotating pin.The utility model constructs standardization automatic positioning structure by base and multiple positioning components arranged around the circumference of the set circle center, solves the problem of low efficiency of traditional manual positioning, deviation causes the problem of improper welding point, insufficient assembly precision;Locating ball in positioning component is flexibly rotated in ball head seat mounting groove by rotating pin, replaces the rigid cooperation of fixed positioning hole and positioning pin, avoids rigid impact and friction when contacting, solves the jamming phenomenon from the root, reduces component wear, prolongs service life, reduces replacement cost.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and more specifically, to a universal positioning device for a clamp. Background Technology

[0002] In industrial manufacturing processes such as automotive parts production, welding is one of the key processes, and the precise positioning of welding fixtures directly determines the welding quality and the overall vehicle production accuracy. Traditional welding fixtures mostly rely on manual fixing operations, which is not only inefficient, but also prone to positioning deviations due to the uncertainty of manual operation. This can lead to problems such as misaligned welds and insufficient assembly precision of parts, ultimately affecting the quality of the final product.

[0003] Currently, some welding production lines use fixed positioning holes on the storage lifting device, with positioning pins inserted into these holes to achieve fixture positioning. While this method achieves a degree of automated positioning, it has significant drawbacks in practical applications: the fit between the positioning pin and the positioning hole is prone to jamming due to wear or installation misalignment, leading to rapid wear of the positioning hole. This not only frequently affects production progress but also requires periodic replacement of related components, increasing production costs. Furthermore, the fixed structure of the positioning hole cannot flexibly adjust positioning accuracy, making it difficult to adapt to the welding requirements of different component specifications and limiting the flexibility of the production line. Utility Model Content

[0004] The purpose of this invention is to provide a universal positioning device for a clamp, which can solve the above-mentioned technical problems.

[0005] This utility model provides a universal positioning device for a clamp, including a base and multiple positioning components; The positioning components are arranged around a predetermined center circle on the base; The positioning component includes a positioning ball, a ball head seat, and a rotating pin; The ball head seat is disposed on the base, and the ball head seat is provided with a mounting groove. The positioning ball rotates in the mounting groove through the rotating pin.

[0006] In an optional implementation, the positioning component further includes a limiting block; The limiting block is disposed on the base and on the side of the ball head seat away from the set center; The ball head seat is fixedly connected to the limiting block by adjusting bolts.

[0007] In an optional embodiment, an adjustment piece is provided between the ball head and the limiting block, which can adjust the distance between the ball head and the limiting block by increasing or decreasing the number of adjustment pieces.

[0008] In an optional embodiment, a positioning block is provided at the end of the limiting block; The positioning block extends in an L-shape toward the ball head seat and is used to position the ball head seat.

[0009] In an optional embodiment, the limiting block is provided with a positioning hole for positioning the limiting block on the base.

[0010] In an optional embodiment, bearings are embedded at both ends of the positioning ball; The rotating pin is connected to the positioning ball via the bearing.

[0011] In an optional embodiment, a washer is provided on the rotating pin; The gasket is located on the side of the bearing away from the locating ball.

[0012] In an optional implementation, a locating pin is also included; The first end of the positioning pin is used to connect to the fixture to be positioned, and the second end of the positioning pin is inserted into the circle enclosed by the positioning component. The outer wall of the positioning pin is tangent to the positioning ball in each of the positioning components.

[0013] In an optional embodiment, the second end of the locating pin is conical.

[0014] In an optional implementation, the number of positioning components is four.

[0015] The beneficial effects of this utility model embodiment are: A standardized automatic positioning structure is constructed by using a base and multiple positioning components arranged around a set center. This structure guides the welding fixture to automatically align with the set center without manual intervention, solving the problems of low efficiency, misaligned welds, and insufficient assembly accuracy caused by traditional manual positioning. The positioning ball in the positioning component rotates flexibly in the ball head seat mounting groove through a rotating pin, replacing the rigid fit of the fixed positioning hole and positioning pin. This avoids rigid collisions and friction during contact, fundamentally solving the jamming problem, reducing component wear, extending service life, and lowering replacement costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1A three-dimensional structural schematic diagram of the clamp universal positioning device provided in the embodiment of this utility model; Figure 2 A three-dimensional structural schematic diagram of the positioning component of the universal positioning device for clamps provided in an embodiment of this utility model; Figure 3 An exploded view of the positioning component of the universal positioning device for clamps provided in this embodiment of the utility model; Figure 4 A schematic diagram of the first state of the universal positioning device for clamps provided in this embodiment of the present utility model when the positioning pin is inserted; Figure 5 A schematic diagram of the second state of the universal positioning device for clamps provided in this embodiment of the present utility model when the positioning pin is inserted; Figure 6 A reference diagram showing the usage state of the clamp universal positioning device provided in the embodiment of this utility model.

[0018] Icons: 1-Base; 2-Positioning ball; 3-Ball head seat; 4-Limit block; 5-Positioning block; 6-Positioning pin; 7-Adjusting bolt; 8-Fixing bolt; 9-Positioning hole; 10-Adjusting plate; 11-Rotating pin; 12-Bearing; 13-Shim; 14-First tangent point; 15-Second tangent point; 16-Positioning fixture. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "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, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 utility model based on the specific circumstances.

[0025] The following is combined with Figures 1-6 The following describes some embodiments of the present invention in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] This utility model provides a universal positioning device for a clamp, such as Figure 1 As shown, it includes a base 1 and multiple positioning components; the positioning components are arranged around a predetermined center circle on the base 1; as... Figure 2 and Figure 3 As shown, the positioning assembly includes a positioning ball 2, a ball head seat 3, and a rotating pin 11; the ball head seat 3 is disposed on the base 1, and the ball head seat 3 is provided with a mounting groove, and the positioning ball 2 rotates in the mounting groove through the rotating pin 11.

[0027] In this embodiment, the base 1 serves as the basic supporting component of the device, providing a stable mounting platform for the positioning components and ensuring that the overall structure will not shift or shake during use. The positioning components are arranged circumferentially around a predetermined center on the base 1. This circumferential arrangement allows for encircling positioning of the fixture 16 from multiple directions, avoiding deviations caused by positioning in a single direction. Each positioning component consists of a positioning ball 2, a ball head seat 3, and a rotating pin 11. The ball head seat 3 is fixed to the base 1, and its top mounting groove is adapted to the outer surface of the positioning ball 2, stably limiting the positioning ball 2 within the groove. The rotating pin 11 passes through the ball head seat 3 and the positioning ball 2, allowing the positioning ball 2 to rotate flexibly within the mounting groove around the rotating pin 11 as an axis. The connection between the rotating pin 11 and the ball head seat 3 is rigidly fixed, ensuring the overall structural stability of the positioning components.

[0028] In this embodiment, multiple circumferentially arranged positioning components can automatically guide and position the fixture 16 to be positioned without manual intervention, greatly improving positioning efficiency. At the same time, the rotational characteristics of the positioning ball 2 replace the rigid fit of the traditional fixed positioning hole 9. When the fixture 16 to be positioned comes into contact with the positioning ball 2, the positioning ball 2 can rotate to adapt to the contact angle, avoiding component damage caused by rigid collision and extending the service life of the device.

[0029] Its positioning principle is based on multi-component collaborative guidance and rotational adaptation. When the fixture 16 to be positioned approaches the device, it will first contact the positioning ball 2 of some positioning components. Since the positioning ball 2 can rotate around the rotating pin 11, the force generated by the contact will drive the positioning ball 2 to rotate, causing the fixture 16 to be positioned to move along the surface of the positioning ball 2 towards the set center. At the same time, multiple positioning components arranged in a circle apply guiding force to the fixture 16 to be positioned from different directions, and finally guide the fixture 16 to be positioned accurately to the set center position, thus achieving positioning.

[0030] The engagement between the rotating pin 11 and the positioning ball 2 utilizes rotational friction instead of sliding friction, reducing frictional resistance and wear between components and avoiding the jamming problem that occurs when the traditional positioning hole 9 and positioning pin 6 are engaged.

[0031] In practical applications, this device is typically integrated into the lifting device or AGV trolley of a welding production line. During use, first, the base 1 is fixed to the worktable, ensuring the set center is aligned with the theoretical positioning point. Then, multiple positioning components are installed, with the ball head seat 3 bolted to the base 1, and the uniformity of the circumferential arrangement is adjusted. When the fixture is transported to its position by the AGV trolley, the positioning pin 6 on the fixture inserts downwards into the center of the device. Due to the circumferential arrangement of the positioning components, the positioning pin 6 will first contact a positioning ball 2. Under the action of the contact force, the positioning ball 2 rotates around the rotating pin 11, guiding the positioning pin 6 to slide towards the center. The operator can monitor the position through a vision system or sensors to ensure that the positioning pin 6 is tangent to all positioning balls 2. The application method emphasizes pre-adjustment: during installation, the circumferential radius and the angle of the ball head seat 3 must be verified to match the fixture dimensions. Routine maintenance includes checking the wear and lubrication of the rotating pin 11. This method improves welding efficiency and reduces manual intervention.

[0032] In an optional embodiment, the positioning component further includes a limiting block 4; the limiting block 4 is disposed on the base 1 and on the side of the ball head seat 3 away from the set center; the ball head seat 3 is fixedly connected to the limiting block 4 by an adjusting bolt 7.

[0033] In this embodiment, the limiting block 4 is mounted on the base 1 by the fixing bolt 8 and is located on the side of the ball head seat 3 away from the set center, thus blocking and limiting the ball head seat 3 from the outside. The adjusting bolt 7 passes through the ball head seat 3 and is threadedly connected to the limiting block 4. The connection between the adjusting bolt 7, the ball head seat 3, and the limiting block 4 is a rigid fit. By tightening the adjusting bolt 7, the ball head seat 3 and the limiting block 4 can be fixed as one unit. The relative position of the limiting block 4 and the ball head seat 3 can be finely adjusted by adjusting the tightness of the adjusting bolt 7. The presence of the limiting block 4 restricts the ball head seat 3 from moving away from the set center, ensuring that the positioning component is always within the preset circumferential arrangement range during use.

[0034] In this embodiment, the limiting block 4 provides support and limitation for the ball head seat 3 from the outside. Combined with the fixing effect of the adjusting bolt 7, the position of the ball head seat 3 can be firmly locked to prevent displacement. At the same time, the setting of the adjusting bolt 7 also facilitates the installation and debugging of the positioning components. During installation, the position of the ball head seat 3 can be finely adjusted by adjusting the tightness of the adjusting bolt 7 to ensure that multiple positioning components are accurately arranged around the set center circumference.

[0035] In an optional embodiment, an adjustment piece 10 is provided between the ball head seat 3 and the limiting block 4, which can adjust the distance between the ball head seat 3 and the limiting block 4 by increasing or decreasing the number of adjustment pieces 10.

[0036] In this embodiment, the adjusting piece 10 is a sheet-like structure, made of metal or high-strength plastic. Its size is adapted to the contact area of ​​the ball head seat 3 and the limiting block 4, allowing it to fit completely between them. The number of adjusting pieces 10 can be increased or decreased as needed. Each additional adjusting piece 10 increases the distance between the ball head seat 3 and the limiting block 4 by the thickness of one shim 13; conversely, reducing the number of shims 13 decreases the distance. In this structure, the adjusting piece 10 does not form a fixed connection with the ball head seat 3 and the limiting block 4, but only serves to fill the gap. By changing the number of shims 13, the relative distance between the ball head seat 3 and the limiting block 4 can be flexibly adjusted, thereby changing the position of the ball head seat 3 on the base 1.

[0037] The core function of the adjusting plate 10 is to achieve precise fine-tuning of the position of the positioning component, thereby optimizing the overall positioning accuracy of the device.

[0038] In this embodiment, by increasing or decreasing the number of adjusting pieces 10, the distance between the ball head seat 3 and the limiting block 4 can be precisely adjusted according to the actual positioning accuracy detection data, thereby changing the distribution radius of the positioning balls 2 around the set center, ensuring that the center of the positioning area formed by multiple positioning balls 2 completely coincides with the theoretical positioning center. In addition, the adjusting pieces 10 can also play a buffering role, reducing rigid collisions between the ball head seat 3 and the limiting block 4, and reducing component wear.

[0039] The principle is based on the cumulative effect of the thickness of the shims 13 and the transmission of distance. The adjusting piece 10 has a fixed thickness. When n shims 13 are added between the ball head seat 3 and the limiting block 4, the distance between them increases by n times the thickness of a single shim 13. Since the ball head seat 3 and the limiting block 4 are fixed by the adjusting bolt 7, this distance change causes the ball head seat 3 to move closer to the set center (because the position of the limiting block 4 is fixed), thereby causing the positioning ball 2 mounted on the ball head seat 3 to also move towards the set center, changing the circumferential distribution radius of the positioning ball 2. Conversely, when the number of shims 13 is reduced, the ball head seat 3 will move away from the set center, increasing the distribution radius of the positioning ball 2. In this way, the position of the positioning ball 2 can be precisely controlled according to the positioning accuracy requirements, ensuring accurate centering of the positioning area.

[0040] In an optional embodiment, a positioning block 5 is provided at the end of the limiting block 4; the positioning block 5 extends in an L-shape toward the ball head seat 3 to position the ball head seat 3.

[0041] In this embodiment, the positioning block 5 and the limiting block 4 are integrally formed or fixed by welding. The positioning hole 9, when combined with the limiting block 4, forms an L-shaped enclosure structure, with one side fitting against the end face of the limiting block 4 and the other side extending vertically, partially covering the lateral surface of the ball joint 3. The function of the positioning block 5 is to provide additional lateral constraint, preventing the ball joint 3 from rotating or translating during adjustment or under force. The positioning block 5 maintains a small clearance fit with the side of the ball joint 3, ensuring that it does not interfere with the normal adjustment of the ball joint 3, but limiting significant displacement.

[0042] In an optional embodiment, the limiting block 4 is provided with a positioning hole 9 for positioning the limiting block 4 on the base 1.

[0043] In this embodiment, the positioning holes 9 are round or square holes that penetrate the limiting block 4, and there are usually 1-2 of them. They are located in the non-stressed area of ​​the limiting block 4 and are perfectly matched to the dimensions of the preset positioning protrusions or positioning pins 6 on the base 1. The positioning protrusions can be inserted into the positioning holes 9 to form a tight fit. The axis of the positioning holes 9 is perpendicular to the mounting reference plane of the limiting block 4, ensuring that the limiting block 4 maintains a preset mounting angle when positioned with the base 1 through the positioning holes 9. The fit between the positioning holes 9 and the positioning protrusions on the base 1 is a clearance fit, which enables rapid positioning of the limiting block 4 while avoiding installation difficulties caused by interference fits.

[0044] In an optional embodiment, bearings 12 are embedded at both ends of the positioning ball 2; the rotating pin 11 is connected to the positioning ball 2 through the bearings 12.

[0045] In this embodiment, the bearing 12 is a rolling bearing 12, whose inner diameter is adapted to the outer diameter of the rotating pin 11, and whose outer diameter is adapted to the size of the mounting holes opened at both ends of the positioning ball 2. The bearing 12 can be completely embedded inside the positioning ball 2, with only the outer ring contacting the inner wall of the mounting hole of the positioning ball 2, and the inner ring contacting the rotating pin 11. After the rotating pin 11 passes through the ball head seat 3, the inner ring of the bearing 12, and the positioning ball 2 in sequence, it is fixed to the ball head seat 3 on the other side, so that the positioning ball 2 forms a rolling fit with the rotating pin 11 through the bearing 12. The outer ring of the bearing 12 is fixed to the positioning ball 2, and the inner ring is fixed to the rotating pin 11. When rotating, the outer ring rotates with the positioning ball 2, while the inner ring remains stationary. The setting of the bearing 12 changes the friction mode between the positioning ball 2 and the rotating pin 11 from sliding friction to rolling friction, which greatly reduces the frictional resistance.

[0046] Specifically, in this embodiment, there are two bearings 12, which are respectively arranged on opposite sides of the positioning ball 2. This arrangement ensures the balance of forces on the positioning ball 2 when it rotates.

[0047] In this embodiment, the rolling friction coefficient of the rolling bearing 12 is much smaller than the sliding friction coefficient, significantly reducing the frictional resistance of the positioning ball 2 during rotation and making the rotation smoother. Even with long-term use, the wear of the bearing 12 is much less than the wear of direct contact, extending the service life of the positioning ball 2 and the rotating pin 11. Simultaneously, the rolling fit of the bearing 12 ensures the coaxiality of the positioning ball 2 during rotation, preventing eccentric rotation of the positioning ball 2 due to uneven friction and ensuring positioning accuracy.

[0048] In an optional embodiment, a shim 13 is provided on the rotating pin 11; the shim 13 is provided on the side of the bearing 12 away from the positioning ball 2.

[0049] In this embodiment, a washer 13 is fitted onto the rotating pin 11. The washer 13 is located on the side of the bearing 12 away from the positioning ball 2, i.e., on the outer side of the two bearings 12. The washer 13 has a ring structure, and its inner diameter is adapted to the outer diameter of the rotating pin 11, allowing it to be tightly fitted onto the rotating pin 11. Its outer diameter is larger than the inner diameter of the bearing 12 but smaller than the outer diameter of the bearing 12, ensuring that the washer 13 can completely cover the end face of the inner ring of the bearing 12. The washer 13 is made of a wear-resistant metal (such as stainless steel), which has high strength and wear resistance, and can withstand the axial force transmitted by the bearing 12 without deformation. The washer 13 and the rotating pin 11 are clearance-fitted, allowing the washer to rotate with the rotating pin 11, while simultaneously maintaining tight contact with the end face of the inner ring of the bearing 12, forming an axial limit.

[0050] In an optional embodiment, a positioning pin 6 is also included; the first end of the positioning pin 6 is used to connect to the fixture 16 to be positioned, and the second end of the positioning pin 6 is inserted into the circle enclosed by the positioning components; the outer wall of the positioning pin 6 is tangent to the positioning ball 2 in each of the positioning components.

[0051] In this embodiment, the positioning pin 6 is a cylindrical structure with a connecting structure, such as a thread or flange, at its first end, which can be fixedly connected to the fixture 16 to be positioned. The connection method is a rigid connection, ensuring that the positioning pin 6 and the fixture 16 move synchronously. The second end of the positioning pin 6 is a smooth cylindrical surface with a diameter that matches the diameter of the circle enclosed by multiple positioning components. When the positioning pin 6 is inserted into this circle, its outer wall can form tangential contact with the positioning ball 2 of each positioning component, and the tangency points are evenly distributed on the circumference of the positioning pin 6. The length of the positioning pin 6 is designed according to the height of the positioning components to ensure that the second end can be completely inserted into the area enclosed by the positioning components, achieving stable tangency.

[0052] In this embodiment, the second end of the positioning pin 6 is a regular cylindrical surface, which can be uniformly tangent to multiple positioning balls 2. Guided by the positioning pin 6, the fixture 16 to be positioned is accurately guided to the set center position. At the same time, the rigid connection structure of the positioning pin 6 ensures that the fixture 16 to be positioned moves synchronously with the positioning pin 6, avoiding relative displacement of the fixture 16 to be positioned during the positioning process, and further improving the positioning accuracy. In addition, the positioning pin 6 can also protect the positioning structure of the fixture 16 to be positioned, preventing it from directly rubbing against the positioning balls 2 and causing wear.

[0053] In an optional embodiment, the second end of the locating pin 6 is conical.

[0054] In this embodiment, the second end of the positioning pin 6 is conical, and the tip is blunted to avoid damage to the positioning ball 2.

[0055] Specifically, in this embodiment, the diameter of the large end of the cone is the same as the diameter of the cylindrical section of the positioning pin 6, while the diameter of the small end is smaller than the diameter of the circle enclosed by the multiple positioning components, allowing the cone end to be smoothly inserted into the enclosing circle. The cone surface is polished, resulting in low surface roughness and reducing frictional resistance when in contact with the positioning ball 2. The cone end and the cylindrical section of the positioning pin 6 are integrally formed to ensure connection strength and prevent breakage.

[0056] The conical end can optimize the guiding effect when the positioning pin 6 is inserted into the positioning component to form a circle, reduce rigid collisions during initial contact, and improve the smoothness and accuracy of the positioning process.

[0057] In this embodiment, the conical surface at the conical end has a guiding function. Even if the initial position deviation is large, the conical surface can first form a smooth contact with the positioning ball 2. The tilt angle of the conical surface guides the positioning pin 6 to gradually adjust its position, avoiding rigid collisions. At the same time, the contact point between the conical surface and the positioning ball 2 will gradually transition towards the cylindrical section as the insertion depth increases, making the centering process of the positioning pin 6 smoother and reducing fluctuations in positioning accuracy.

[0058] When the positioning fixture 16 descends, the smaller end of the cone enters the circle enclosed by the positioning assembly first. If there is a deviation in the positioning pin 6, the conical surface of the smaller end will first contact the positioning ball 2 on one side, and the contact point is located at... Figure 4 At the first tangent point 14 shown, guided by the conical surface, the positioning pin 6 slowly adjusts its position and moves towards the set center. As the fixture 16 continues to descend, the conical surface at the end of the cone contacts more positioning balls 2, increasing the adjustment speed of the positioning pin 6 and gradually centering it. When the cylindrical section of the positioning pin 6 begins to contact the positioning balls 2, the contact point between the positioning pin 6 and the positioning balls 2 is located at... Figure 5 At the second tangent point 15 shown, the positioning pin 6 is basically aligned. It continues to descend until the cylindrical section is tangent to all the positioning balls 2. At this point, the positioning fixture 16 is fully positioned.

[0059] In an optional implementation, the number of positioning components is four.

[0060] In this embodiment, four positioning components are arranged around a predetermined center circle on the base 1, with an included angle of 90° between adjacent positioning components, forming a mutually aligned and perpendicular distribution structure. Each positioning component has identical structural dimensions, ensuring that the distances from the four positioning balls 2 to the predetermined center circle are equal, enclosing a regular quadrilateral positioning area whose center coincides with the predetermined center circle. The four positioning components are installed at the same height, ensuring that the positioning balls 2 can contact the positioning pins 6 on the same horizontal plane, avoiding uneven contact due to height differences.

[0061] In this embodiment, if the number is too small, such as 2, it can only restrict the displacement in one direction, and the positioning fixture 16 may rotate around the set center, resulting in positioning deviation; if the number is too large, such as 6, it will increase the structural complexity and installation and debugging difficulty, and the extra positioning components cannot significantly improve the positioning accuracy.

[0062] It is understood that in this embodiment, the number of positioning components is four, but it is not limited to four. It can also be other numbers, such as three or five, as long as the positioning stability and accuracy of the positioning pin 6 can be guaranteed.

[0063] The beneficial effects of this utility model embodiment are: A standardized automatic positioning structure is constructed by using a base 1 and multiple positioning components arranged around a set center. This structure guides the welding fixture to automatically align with the set center without manual intervention, solving the problems of low efficiency, misaligned welds, and insufficient assembly accuracy caused by traditional manual positioning. In the positioning components, the positioning ball 2 rotates flexibly in the mounting groove of the ball head seat 3 via the rotating pin 11, replacing the rigid fit between the fixed positioning hole 9 and the positioning pin 6. This avoids rigid collisions and friction during contact, fundamentally solving the jamming problem, reducing component wear, extending service life, and lowering replacement costs.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A universal positioning device for a clamp, characterized in that, Includes a base and multiple positioning components; The positioning components are arranged around a predetermined center circle on the base; The positioning component includes a positioning ball, a ball head seat, and a rotating pin; The ball head seat is disposed on the base, and the ball head seat is provided with a mounting groove. The positioning ball rotates in the mounting groove through the rotating pin.

2. The universal positioning device for clamps according to claim 1, characterized in that, The positioning component also includes a limiting block; The limiting block is disposed on the base and on the side of the ball head seat away from the set center; The ball head seat is fixedly connected to the limiting block by adjusting bolts.

3. The universal positioning device for clamps according to claim 2, characterized in that, An adjustment piece is provided between the ball head and the limiting block, which can adjust the distance between the ball head and the limiting block by increasing or decreasing the number of adjustment pieces.

4. The universal positioning device for a clamp according to claim 2, characterized in that, The end of the limiting block is provided with a positioning block; The positioning block extends in an L-shape toward the ball head seat and is used to position the ball head seat.

5. The universal positioning device for a clamp according to claim 2, characterized in that, The limiting block is provided with a positioning hole for positioning the limiting block on the base.

6. The universal positioning device for a clamp according to claim 1, characterized in that, Bearings are embedded at both ends of the positioning ball; The rotating pin is connected to the positioning ball via the bearing.

7. The universal positioning device for a clamp according to claim 6, characterized in that, A washer is provided on the rotating pin; The gasket is located on the side of the bearing away from the locating ball.

8. The universal positioning device for a clamp according to claim 1, characterized in that, It also includes positioning pins; The first end of the positioning pin is used to connect to the fixture to be positioned, and the second end of the positioning pin is inserted into the circle enclosed by the positioning component. The outer wall of the positioning pin is tangent to the positioning ball in each of the positioning components.

9. The universal positioning device for a clamp according to claim 8, characterized in that, The second end of the locating pin is conical.

10. The universal positioning device for a clamp according to claim 1, characterized in that, The number of positioning components is four.

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