A calibration platform

Abstract

The application relates to the field of workpiece clamping and calibration, in particular to a calibration platform which comprises a base, a type groove for accommodating a workpiece is arranged on the base, a movable pressing plate is arranged at the type groove, a first holding assembly and a second holding assembly are hingedly arranged on the base, and the second holding assembly is connected with the pressing plate through a connecting rod assembly. When clamping the workpiece, the first holding assembly is first rotated to a trigger position, then the second holding assembly is rotated, the pressing plate is pressed against the workpiece through the connecting rod assembly, and a temporary locking structure is arranged between the first holding assembly and the base; a mounting groove, an elastic reset piece and a limiting column are arranged on the base at the side corresponding to the pressing plate, a visual window is further arranged, and a scale is arranged on the base at the position corresponding to the type groove. The application has the technical effects of conveniently clamping and calibrating the workpiece, stably keeping the state of the first holding assembly, and intuitively observing the state of the elastic reset piece.

Description

Technical Field

[0001] This application relates to the field of workpiece clamping and calibration, and in particular to a calibration platform. Background Technology

[0002] In the field of robot-assisted equipment technology, robot calibration is crucial, as its accuracy directly affects the robot's performance in various application scenarios. With the development of industrial automation, the precision requirements for robots are increasing, and the accurate and stable fixing of the calibration target ball or calibration tool during the calibration process is a key step in ensuring calibration accuracy. Effectively resolving this issue can improve the efficiency and quality of robots in many fields such as manufacturing and logistics, thus promoting the development of related industries.

[0003] In traditional robot calibration processes, various methods are commonly used to accurately and stably fix the calibration target ball or calibration tool within the workspace. Common methods include electric, pneumatic, or simple screw clamping. Electric devices utilize electricity for precise control; pneumatic devices rely on compressed air for power and offer a degree of flexibility. Simple screw clamping achieves clamping by rotating a screw; its structure is relatively simple and its cost is low.

[0004] However, existing clamping methods have significant drawbacks. While electric or pneumatic devices have advantages in some aspects, they are costly and complex in structure, increasing the purchase and maintenance costs of the equipment. Simple screw clamping methods are cumbersome to operate and difficult to achieve rapid positioning and locking in practical use, failing to meet the needs of efficient calibration. Therefore, there is an urgent need for a manual calibration platform that is quick to operate, simple in structure, and can provide stable and reliable clamping force. Utility Model Content

[0005] The purpose of this application is to provide a calibration platform.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a calibration platform, including a base, the base having a groove for accommodating a workpiece, and a pressure plate corresponding to the groove on the base that can move towards or away from the base; a first gripping assembly is hinged to the base, the first gripping assembly being rotatable relative to the base around the hinge point, having a preparatory position and a triggered position after rotation; a second gripping assembly is hinged to the base, the second gripping assembly being connected to the pressure plate by a connecting rod assembly, one end of the connecting rod assembly being hinged to the second gripping assembly and the other end being hinged to the pressure plate; when clamping a workpiece, the first gripping assembly is first rotated from the preparatory position to the triggered position, and then the second gripping assembly is driven to rotate towards the first gripping assembly, the connecting rod assembly driving the pressure plate to move towards the base, the pressure plate cooperating with the base to press and lock the workpiece.

[0007] By adopting the above technical solution, the workpiece is initially positioned through the groove on the base. Combined with a pressure plate that can move towards or away from the base, and a first gripping assembly, a second gripping assembly, and a linkage assembly connecting the second gripping assembly and the pressure plate, clamping the workpiece only requires rotating the first gripping assembly from the preparatory position to the trigger position, and then driving the second gripping assembly to rotate towards the first gripping assembly. The linkage assembly stably transmits power and moves the pressure plate towards the base, ultimately clamping and locking the workpiece together with the pressure plate. The entire operation is simple and intuitive, requiring no complex electric or pneumatic structures for manual drive. This not only reduces equipment complexity and operating costs but also ensures smooth power transmission and clamping stability through mechanical linkage, effectively preventing workpiece displacement during calibration and providing reliable assurance for accurate calibration. Furthermore, compared to traditional screw clamping methods, this significantly simplifies the operation steps and improves workpiece clamping efficiency.

[0008] Optionally, a temporary locking structure is provided between the first gripping component and the base. The temporary locking structure is used to stably maintain the first gripping component when it is rotated to the preparatory position. The temporary locking structure is a buckle, a magnetic attraction device, or a disc spring damping structure.

[0009] By adopting the above technical solution, a temporary locking structure is set between the first gripping component and the base. This structure can be a snap-fit, a magnetic attraction device, or a disc spring damping structure. After the first gripping component is rotated to the ready position, it can be stably held, effectively preventing accidental displacement of the first gripping component and ensuring the continuity and reliability of the linkage clamping action. At the same time, it eliminates the need for operators to manually and continuously fix the first gripping component, significantly reducing operational intensity and improving operational convenience. The three optional locking structure forms are suitable for different usage scenarios and needs. The snap-fit ​​structure has the advantages of simple structure and firm locking, the magnetic attraction device operates smoothly and has no mechanical wear, and the disc spring damping structure can provide a smooth locking and unlocking feel, enriching the adaptability and practicality of the equipment and further ensuring the stability of workpiece clamping during calibration.

[0010] Optionally, the temporary locking structure is a disc spring damping structure disposed between the first gripping component and the base, and the disc spring damping structure can restrict the rotation of the second gripping component relative to the base when the first gripping component is in the preparatory position.

[0011] By adopting the above technical solution, the temporary locking structure is specifically set as a disc spring damping structure between the first gripping component and the base. This disc spring damping structure is arranged on the rotation path of the second gripping component. When the first gripping component is in the ready position, the disc spring damping structure will physically block the second gripping component, preventing it from rotating relative to the base, effectively preventing accidental triggering in non-operational states and greatly improving the safety of equipment use. When the first gripping component rotates from the ready position to the trigger position, it will simultaneously drive the disc spring damping structure to avoid the rotation path of the second gripping component, releasing the obstruction restriction on the second gripping component, ensuring that the second gripping component can be smoothly driven to complete the clamping action, and ensuring the continuity and accuracy of the entire operation process. At the same time, the disc spring damping structure has the characteristics of compact structure and strong adaptability. It does not require additional complex limit components or external control structures, realizing dual functions (prepared position anti-accidental touch, prepared position stable locking), ensuring convenient operation, low wear, high stability, and long-term reliable operation, taking into account both safety and equipment lifespan.

[0012] Optionally, the base has several mounting grooves on one side corresponding to the pressure plate. Each mounting groove contains an elastic reset member and also includes a limiting post that cooperates with the pressure plate. One end of the limiting post is fixedly connected to the pressure plate, and the other end extends into the mounting groove and forms a sliding fit with it. The elastic reset member abuts against the bottom of the mounting groove between itself and the limiting post. When the pressure plate moves towards the base to press the workpiece, the limiting post slides axially along the mounting groove and squeezes the elastic reset member, causing it to accumulate a reset force.

[0013] By adopting the above technical solution, several mounting slots are set on one side of the base corresponding to the pressure plate, and a limiting post that cooperates with the pressure plate is configured in the mounting slot. One end of the limiting post is fixedly connected to the pressure plate, and the other end extends into the mounting slot to form a sliding fit. The structural design, where the elastic reset element abuts against the bottom of the mounting slot and between the limiting post and the base, provides precise guidance for the movement of the pressure plate through the sliding fit between the limiting post and the mounting slot. This prevents the pressure plate from shifting or tilting during its movement towards or away from the base, ensuring the fitting accuracy between the pressure plate and the base, and thus guaranteeing the stability and reliability of workpiece clamping. Furthermore, it allows the pressure plate to move closer to the base without being deviated from or tilted. When the workpiece is pressed against the base, the elastic reset component is axially slid and squeezed by the limiting post along the mounting groove. This allows the elastic reset component to effectively accumulate reset force. After the workpiece is calibrated, no additional manual operation is required. The spring force released by the elastic reset component can drive the pressure plate to automatically reset away from the base, preparing for the next workpiece clamping and significantly improving operating efficiency. At the same time, the mounting groove can effectively store and protect the elastic reset component and the limiting post, avoiding damage to the components caused by external impurities or accidental collisions. The overall structure is simple and compact, with stable operation, and no need for a complex drive mechanism, thus balancing reliability and ease of maintenance.

[0014] Optionally, the base is provided with a viewing window corresponding to the position of the mounting slot, and the viewing window is connected to the mounting slot.

[0015] By adopting the above technical solution, a viewing window connected to the mounting slot is set at the position of the mounting slot on the base. This allows operators to directly observe the compression state of the elastic reset component in the mounting slot, the sliding condition of the limit column, and whether there are any abnormalities such as jamming, wear, deformation, or blockage of impurities in the components without disassembling the base. This facilitates timely detection and troubleshooting of problems, avoids poor platen reset or unstable clamping due to internal component failure, and ensures the continuous and reliable operation of the calibration platform. At the same time, it simplifies the equipment maintenance and repair process, allowing the internal component status inspection to be completed without additional disassembly procedures, reducing maintenance difficulty and time costs, and further improving the convenience and practicality of the equipment.

[0016] Optionally, the base is provided with a scale corresponding to the position of the groove.

[0017] By adopting the above technical solution, setting graduations on the base corresponding to the groove positions provides an intuitive and accurate positioning reference for the workpiece placed in the groove. Operators can quickly adjust the installation position of the workpiece in the groove without the need for additional measuring tools, greatly improving the convenience and efficiency of workpiece positioning. At the same time, clear graduation markings ensure the consistency of the workpiece position each time it is clamped, effectively avoiding calibration errors caused by workpiece placement deviations, providing a reliable guarantee for the accurate execution of robot calibration work, and further improving the stability and reliability of calibration results. Moreover, this structure is simple in design, low in cost, does not increase the complexity of equipment operation, and takes into account both practicality and economy.

[0018] In summary, this application has at least the following beneficial effects: 1. The workpiece is initially positioned by the groove on the base. Combined with a pressure plate that can move towards or away from the base, and a first gripping assembly, a second gripping assembly, and a linkage assembly connecting the second gripping assembly and the pressure plate, clamping the workpiece only requires rotating the first gripping assembly from the preparatory position to the trigger position, and then driving the second gripping assembly to rotate towards the first gripping assembly. The linkage assembly stably transmits power and moves the pressure plate towards the base, ultimately clamping and locking the workpiece together with the pressure plate. The entire operation is simple and intuitive, requiring only manual drive without complex electric or pneumatic structures. This not only reduces equipment complexity and operating costs but also ensures smooth power transmission and clamping stability through mechanical linkage, effectively preventing workpiece displacement during calibration and providing reliable assurance for accurate calibration. Compared to traditional screw clamping methods, this significantly simplifies the operation steps and improves workpiece clamping efficiency.

[0019] 2. The temporary locking structure is specifically set as a disc spring damping structure between the first gripping component and the base, and this disc spring damping structure is correspondingly arranged on the rotation path of the second gripping component. When the first gripping component is in the ready position, the disc spring damping structure will physically block the second gripping component, preventing it from rotating relative to the base, effectively preventing accidental triggering in non-operational states, and greatly improving the safety of equipment use. When the first gripping component rotates from the ready position to the trigger position, it will simultaneously drive the disc spring damping structure to avoid the rotation path of the second gripping component, releasing the obstruction restriction on the second gripping component, ensuring that the second gripping component can be smoothly driven to complete the clamping action, and ensuring the continuity and accuracy of the entire operation process. At the same time, the disc spring damping structure has the characteristics of compact structure and strong adaptability, without the need for additional complex limit components or external control structures. It achieves dual functions (anti-accidental touch in the ready position and stable locking in the ready position), ensures convenient operation, and has low wear, high stability, and can work reliably for a long time, taking into account both safety and equipment lifespan. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a calibration platform; Figure 2 This is a schematic diagram showing the state of the first gripping component rotating to the trigger position; Figure 3 It is a cross-sectional view of a calibration platform; Figure 4 It is a front view of a calibration platform.

[0021] Attached Figure

[0022] 1. Base; 2. Groove; 3. Pressure plate; 4. First gripping assembly; 5. Second gripping assembly; 6. Linkage assembly; 7. Temporary locking structure; 8. Mounting groove; 9. Elastic reset component; 10. Limiting post; 11. Viewing window; 12. Scale. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.

[0024] This application mainly adopts a gripping component linkage pressure plate 3 to achieve a quick workpiece clamping solution, which achieves the effects of fast operation, simple structure and stable and reliable workpiece clamping. The following is a further detailed description of this application. Example

[0025] Reference Figures 1-4 The calibration platform provided in this application includes a base 1, a pressure plate 3, a first gripping component 4, a second gripping component 5, and a connecting rod assembly 6. The first gripping component 4 and the second gripping component 5 are hinged to the base 1. The second gripping component 5 is connected to the pressure plate 3 via the connecting rod assembly 6. The first gripping component 4 provides support, and the rotation of the second gripping component 5 moves the pressure plate 3 closer to or further away from the base 1, thus clamping and releasing the workpiece. This achieves the beneficial effects of quick operation, simple structure, and stable and reliable workpiece clamping. This is because the linkage of the two gripping components and the transmission of the connecting rod assembly 6 convert the manual rotational force into a vertical clamping force. The operation process is ergonomic, improving operational efficiency. Simultaneously, the lever principle of the connecting rod assembly 6 and the hinge effectively converts force, ensuring stable and reliable clamping force.

[0026] Specifically, the base 1 is the fundamental component of the entire calibration platform, serving to support and secure other components. The base 1 has a groove 2 for accommodating the workpiece. The groove 2 is typically designed as a V-groove, a shape that better accommodates cylindrical workpieces, making them more stable within the groove. The base 1 also has graduations 12 corresponding to the groove 2, which help operators place the workpiece more accurately, improving calibration precision. The groove 2 can be machined using casting, milling, or other processes, and is generally made of metal materials such as aluminum alloy or stainless steel to ensure its strength and wear resistance. Alternatively, the groove 2 can be designed in other shapes according to the workpiece, such as a U-shaped groove 2.

[0027] The flat surface of the pressure plate 3 works in conjunction with the V-groove 2 on the base 1 to clamp and lock the cylindrical workpiece placed within the groove. The pressure plate 3 can also be made of metal, and its surface can be polished to reduce friction with the workpiece and prevent scratches. Alternatively, a soft material such as a rubber pad can be attached to the surface of the pressure plate 3 to increase friction with the workpiece and improve the clamping effect.

[0028] The first gripping component 4 is hinged to the base 1 via a pivot, and its rotation plane is parallel to the X-Z plane. This component has two working positions: a horizontal preparatory position and a near-vertical trigger position after rotating approximately 90°. The first gripping component 4 can be a rod-shaped structure for easy handling. The pivot can be a pin or similar structure to ensure flexible rotation of the first gripping component 4. The first gripping component 4 can be made of plastic or metal, such as aluminum alloy, to reduce weight and facilitate operation. Alternatively, the first gripping component 4 can be designed in other shapes, such as a handle.

[0029] The second gripping component 5 is hinged to the base 1 via a pivot, and its rotation plane is parallel to the Y-Z plane and perpendicular to the rotation plane of the first gripping component 4. The second gripping component 5 is connected to the pressure plate 3 via a connecting rod assembly 6. The second gripping component 5 can also be a rod-shaped structure for easy gripping by the operator. The pivot can also be a pin or similar structure to ensure flexible rotation of the second gripping component 5. One end of the connecting rod assembly 6 is hinged to the second gripping component 5, and the other end is hinged to the pressure plate 3. Through the transmission of the connecting rod assembly 6, the rotation of the second gripping component 5 is converted into the up-and-down movement of the pressure plate 3. The connecting rod assembly 6 can be a metal rod or similar structure, and its length and shape can be designed according to actual needs. Alternatively, the connecting rod assembly 6 can also use other transmission methods, such as chain drive.

[0030] The combination logic of the first gripping component 4 and the second gripping component 5 is as follows: First, the first gripping component 4 is rotated from the ready position to the trigger position, which puts the second gripping component 5 into the ready-to-trigger state. Then, the second gripping component 5 is gripped and rotated downwards, driving the pressure plate 3 towards the base 1 through the connecting rod assembly 6, so that the pressure plate 3 and the base 1 close together, pressing and locking the workpiece in the groove 2. This combination method utilizes the lever principle of the connecting rod assembly 6 and the hinge, effectively converting the manual rotational force into a vertical and powerful clamping force, ensuring the stability and reliability of the clamping force.

[0031] Specifically, the base 1 has several mounting grooves 8 on one side corresponding to the pressure plate 3. Each mounting groove 8 contains an elastic reset element 9, and also includes a limiting post 10 that cooperates with the pressure plate 3. One end of the limiting post 10 is fixedly connected to the pressure plate 3, and the other end extends into the mounting groove 8, forming a sliding fit with it. The elastic reset element 9 abuts against the bottom of the mounting groove 8 between itself and the limiting post 10. The elastic reset element 9 is generally a reset spring. When the pressure plate 3 moves towards the base 1 to press the workpiece, the limiting post 10 slides axially along the mounting groove 8 and squeezes the elastic reset element 9, causing it to accumulate reset force. When the second gripping component 5 is released, the pressure plate 3 is lifted by the elastic force of the elastic reset element 9, thereby driving the entire linkage mechanism to move in the opposite direction and automatically return to its initial open state. The mounting grooves 8 can be machined using drilling or other processes, and the limiting post 10 can have a cylindrical structure with a surface treated with chrome plating or other methods to improve wear resistance. Alternatively, the elastic reset element 9 can also be made of elastic materials such as rubber blocks.

[0032] A viewing window 11 is provided on the base 1 corresponding to the mounting slot 8, and the viewing window 11 is connected to the mounting slot 8. The viewing window 11 allows the operator to easily observe the working status of the elastic reset component 9 and determine whether it is working properly. The viewing window 11 can be covered with a transparent plastic sheet or other materials to prevent dust and other contaminants from entering the mounting slot 8.

[0033] A temporary locking structure 7 is provided between the first gripping component 4 and the base 1. The temporary locking structure 7 is used to stably maintain the first gripping component 4 in the ready position. The temporary locking structure 7 can be a snap-fit, a magnetic attraction device, or a disc spring damping structure. In this embodiment, the temporary locking structure 7 is a disc spring damping structure disposed between the first gripping component 4 and the base 1, and the disc spring damping structure can restrict the rotation of the second gripping component 5 relative to the base 1 when the first gripping component 4 is in the ready position. The disc spring damping structure utilizes the elastic deformation of the disc spring to generate damping force, so that the first gripping component 4 can be stably maintained in the ready position, while restricting the rotation of the second gripping component 5 in the ready position, ensuring the safety and stability of operation. The disc spring can be made of metal material, and its size and specifications can be selected according to actual needs. Alternatively, the temporary locking structure 7 can also take other forms, such as a pin.

[0034] The implementation principle of this embodiment is as follows: The calibration platform of this embodiment achieves a fast, labor-saving, and reliable clamping function. Compared with the prior art, its operation is faster, and clamping can be completed through two consecutive rotational movements, avoiding the high cost and complex structure of traditional electric and pneumatic devices, and also solving the problem of cumbersome operation of simple spiral clamping methods. At the same time, the built-in return spring ensures immediate reset upon release, improving calibration efficiency. In addition, the disc spring damping structure ensures the safety and stability of operation, and the setting of scale 12 improves the calibration accuracy. The overall structure is simple and compact, easy to maintain and use, and represents a significant improvement and contribution to the prior art. Example

[0035] The difference between this embodiment and the previous embodiment is that the temporary locking structure 7 adopts a snap-fit ​​structure. The snap-fit ​​structure includes a snap block and a slot. The snap block is disposed on the first gripping component 4, and the slot is disposed on the base 1. When the first gripping component 4 is in the ready position, the snap block engages with the slot, achieving temporary locking of the first gripping component 4. The advantages of the snap-fit ​​structure are its simple structure, low cost, and convenient operation.

[0036] The implementation principle of this embodiment is as follows: This embodiment uses a snap-fit ​​structure as the temporary locking structure 7, which can also achieve the function of stably holding the first gripping component 4 in the preparatory position. Compared with the disc spring damping structure, the snap-fit ​​structure has lower cost, simpler structure, and is easier to manufacture and maintain. During operation, locking and unlocking can be quickly achieved through the cooperation of the snap-fit ​​block and the snap-fit ​​slot, improving operational efficiency. Overall, this solution reduces costs while ensuring the basic functions of the calibration platform, and makes certain improvements and contributions to the existing technology.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A calibration platform, characterized in that, The system includes a base (1) with a groove (2) for accommodating a workpiece, and a pressure plate (3) that can move towards or away from the base (1) at a location corresponding to the groove (2); a first gripping assembly (4) is hinged to the base (1), the first gripping assembly (4) being rotatable relative to the base (1) around the hinge point, having a preparatory position and a trigger position after rotation; and a second gripping assembly (5) is hinged to the base (1), the second gripping assembly (5) being connected to the pressure plate (3). A connecting rod assembly (6) is connected between them. One end of the connecting rod assembly (6) is hinged to the second gripping assembly (5), and the other end is hinged to the pressure plate (3). When clamping the workpiece, the first gripping assembly (4) is first rotated from the preparatory position to the trigger position, and then the second gripping assembly (5) is driven to rotate towards the first gripping assembly (4). The connecting rod assembly (6) drives the pressure plate (3) to move towards the base (1). The pressure plate (3) works with the base (1) to press and lock the workpiece.

2. The calibration platform according to claim 1, characterized in that, A temporary locking structure (7) is provided between the first gripping component (4) and the base (1). The temporary locking structure (7) is used to keep the first gripping component (4) stable when it is rotated to the preparatory position. The temporary locking structure (7) is a buckle, a magnetic attraction device or a disc spring damping structure.

3. The calibration platform according to claim 2, characterized in that, The temporary locking structure (7) is a disc spring damping structure disposed between the first gripping component (4) and the base (1), and the disc spring damping structure can restrict the second gripping component (5) from rotating relative to the base (1) when the first gripping component (4) is in the preparatory position.

4. The calibration platform according to claim 1, characterized in that, The base (1) is provided with several mounting grooves (8) on one side corresponding to the pressure plate (3). The mounting groove (8) is provided with an elastic reset member (9) and also includes a limiting post (10) that cooperates with the pressure plate (3). One end of the limiting post (10) is fixedly connected to the pressure plate (3), and the other end extends into the mounting groove (8) and forms a sliding fit with the mounting groove (8). The elastic reset member (9) abuts against the bottom of the mounting groove (8) and between the limiting post (10). When the pressure plate (3) moves towards the base (1) to press the workpiece, the limiting post (10) slides along the axial direction of the mounting groove (8) and squeezes the elastic reset member (9), so that the elastic reset member (9) accumulates a reset elastic force.

5. The calibration platform according to claim 4, characterized in that, The base (1) is provided with a viewing window (11) corresponding to the position of the mounting slot (8), and the viewing window (11) is connected to the mounting slot (8).

6. The calibration platform according to claim 1, characterized in that, The base (1) is provided with a scale (12) corresponding to the position of the groove (2).

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