Anti-skid precision positioning clamp

Abstract

The utility model relates to the technical field of clamps, and discloses an antiskid precision positioning clamp which comprises an outer frame, two second fixing plates are connected to the upper surface of the outer frame in a sliding mode, first fixing plates are attached to the upper surfaces of the two second fixing plates, and clamping assemblies are arranged on the upper surfaces of the two first fixing plates. And the clamping assembly comprises a second anti-skid clamp and a first anti-skid clamp, the second anti-skid clamp and the first anti-skid clamp are fixedly connected to the upper surfaces of the two first fixing plates correspondingly, a first sliding plate and a second sliding plate are fixedly connected to the lower surfaces of the two second fixing plates correspondingly, and a first connecting rod is rotationally connected to the inner wall of each first sliding plate. According to the clamping device, the motor, the worm, the worm gear and the connecting rod linkage mechanism are arranged, single rotating motion of the motor is converted into synchronous and opposite linear motion of the two sliding plates, clamping automation and accurate positioning are achieved, clamping stability and reliability are guaranteed through the self-locking characteristic of the worm gear and the worm, and the machining precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to an anti-slip precision positioning clamp. Background Technology

[0002] In the field of modern machining and automated manufacturing, anti-slip precision positioning fixtures are key equipment for achieving high-precision workpiece clamping, and are widely used in CNC machine tools, testing instruments, and assembly lines. With the diversification of machining objects and the increasing demand for flexible manufacturing, the limitations of traditional fixtures in adapting to workpieces of different sizes are becoming increasingly apparent. There is an urgent need for a precision fixture with adaptive adjustment capabilities to meet complex and ever-changing production needs.

[0003] Currently, most common fixtures employ fixed-stroke mechanical structures, such as cylinder-driven grippers, threaded adjustable fixtures, or hydraulic clamping devices. These fixtures typically require manual adjustment of the clamping range or replacement of fixture components to accommodate workpieces of different sizes. While some semi-automatic fixtures can adjust the clamping distance using external tools, they still cannot achieve rapid adaptive adjustment, resulting in low changeover efficiency and difficulty in meeting the flexible production requirements of modern intelligent manufacturing.

[0004] However, existing fixture structures generally suffer from the limitation of rigid fixation, making it impossible to automatically adjust the clamping range according to workpieces of different sizes. When the size of the workpiece changes, it is often necessary to stop the machine to replace the fixture or manually adjust the mechanism, which not only reduces production efficiency but also easily affects positioning accuracy due to human adjustment errors, making it difficult to meet the dual requirements of modern automated production lines for rapid changeover and high-precision positioning. Utility Model Content

[0005] To achieve the above objectives, the present invention provides the following technical solution: an anti-slip precision positioning clamp, comprising an outer frame, wherein two fixing plates are slidably connected to the upper surface of the outer frame, and fixing plates are attached to the upper surfaces of the two fixing plates, and clamping components are provided on the upper surfaces of the two fixing plates.

[0006] The clamping assembly includes anti-slip clamp two and anti-slip clamp one. Anti-slip clamp two and anti-slip clamp one are respectively fixedly connected to the upper surfaces of two fixed plates one. Sliding plate one and sliding plate two are respectively fixedly connected to the lower surfaces of two fixed plates two. A connecting rod one is rotatably connected to the inner wall of sliding plate one. A rotating shaft is rotatably connected inside the connecting rod one. A connecting rod two is rotatably connected to the outer wall of the rotating shaft. A rotating disk is fixedly connected to one end of connecting rod two. A worm gear is fixedly connected to the lower surface of the rotating disk. A motor is fixedly connected to the inner wall of the outer frame. A worm is fixedly connected to the output end of the motor. The worm gear meshes with the worm gear. Sliding plate two is slidably connected to the inner wall of the outer frame. A connecting rod three is rotatably connected to the inner wall of sliding plate two. The outer wall of connecting rod three is rotatably connected to the inner wall of connecting rod two. The upper surface of sliding plate two is fixedly connected to the lower surface of one of the fixed plates two.

[0007] Furthermore, a knob is provided on the upper surface of the fixing plate, a threaded rod is fixedly connected to the outer wall of the knob, a fixing sleeve is rotatably connected to the outer wall of the threaded rod, and an installation component is provided inside the fixing sleeve.

[0008] Furthermore, the installation assembly includes a locking block, the outer wall of which is slidably connected to the inner wall of the fixing sleeve, a sliding block fixedly connected to the lower surface of the locking block, a telescopic rod slidably connected to the outer wall of the sliding block, a spring sleeved on the outer wall of the telescopic rod, and a pressing block threadedly connected to the outer wall of the threaded rod.

[0009] Furthermore, the lower end of the pressing block is provided with a protrusion for pressing the card block, and the card block is provided with an inclined surface that cooperates with the protrusion.

[0010] Furthermore, one end of the spring is fixedly connected to the outer wall of the sliding block, and the other end of the spring is fixedly connected to the inner wall of the fixed sleeve.

[0011] Furthermore, the outer wall of the card block is slidably connected to the inner wall of the second fixing plate, and the outer wall of the fixing sleeve is slidably connected to the inner wall of the second fixing plate.

[0012] Furthermore, the outer wall of the sliding plate is slidably connected to the inner wall of the outer frame, and the worm gear is disposed inside the outer frame.

[0013] Furthermore, the rotating disk is disposed inside the outer frame, and the worm gear is disposed inside the outer frame.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, a linkage mechanism of motor, worm gear, worm wheel and connecting rod is set up to convert the single rotational motion of the motor into the synchronous and opposite linear motion of the two sliding plates, realizing the automation and precise positioning of clamping. The self-locking characteristics of worm gear and worm wheel ensure the stability and reliability of clamping. At the same time, the synchronous clamping method effectively avoids the workpiece displacement caused by uneven force, and improves the processing accuracy.

[0016] 2. In this utility model, by setting up a quick installation assembly consisting of a knob, a threaded rod, a pressure block, and a locking block, the operator only needs to turn the knob to realize the quick locking and unlocking of the upper clamp by utilizing the inclined surfaces of the pressure block and the locking block. This enables quick replacement of the clamp head without the need for additional tools, making the operation simple and greatly improving the working efficiency and versatility of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the anti-slip precision positioning clamp proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the outer frame structure of the anti-slip precision positioning clamp proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the rotating disk portion of the anti-slip precision positioning fixture proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the fixed sleeve part of the anti-slip precision positioning clamp proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the lower pressure block of the anti-slip precision positioning fixture proposed in this utility model.

[0023] The following are the labeling elements in the figure:

[0024] 1. Outer frame; 2. Fixing plate one; 3. Fixing plate two; 4. Anti-slip clamp two; 5. Sliding plate one; 6. Connecting rod one; 7. Rotating shaft; 8. Connecting rod two; 9. Rotating disk; 10. Worm gear; 11. Motor; 12. Worm; 13. Connecting rod three; 14. Sliding plate two; 15. Anti-slip clamp one; 16. Knob; 17. Threaded rod; 18. Fixing sleeve; 19. Clamping block; 20. Sliding block; 21. Spring; 22. Telescopic rod; 23. Pressing block. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0029] Reference Figures 1-3 An embodiment of this utility model provides an anti-slip precision positioning fixture, including an outer frame 1, which provides a basic installation platform and sliding guide for the entire fixture. Two fixing plates 3 are slidably connected to the upper surface of the outer frame 1, serving as a bridge connecting the sliding plate 5, the sliding plate 14 and the fixing plate 2, and providing an inner wall structure for locking with the locking block 19. The upper surfaces of the two fixing plates 3 are fitted with fixing plates 2, which serve as the main body of the replaceable fixture head, supporting the anti-slip fixture and quick-change components. Clamping components are provided on the upper surfaces of the two fixing plates 2.

[0030] The clamping assembly includes anti-slip clamp 2 4 and anti-slip clamp 1 5. Anti-slip clamp 2 4 and anti-slip clamp 1 5 are respectively fixedly connected to the upper surfaces of two fixed plates 2. Sliding plates 1 5 and 14 are respectively fixedly connected to the lower surfaces of the two fixed plates 2. Sliding plate 1 5 converts the motion transmitted from connecting rod 6 into linear sliding of fixed plate 2. Connecting rod 6 is rotatably connected to the inner wall of sliding plate 1 5, effectively transmitting the rotational motion of rotating disk 9 to sliding plate 1 5. A rotating shaft 7 is rotatably connected inside connecting rod 1 6, and connecting rod 2 8 is rotatably connected to the outer wall of rotating shaft 7. Rotating disk 9 is fixedly connected to one end of connecting rod 2 8, converting the single rotational motion transmitted from worm gear 10 into a compound action driving the synchronous movement of the clamps on both sides. Worm gear 10 is fixedly connected to the lower surface of rotating disk 9. The worm gear 12 engages to achieve speed reduction and torque increase, and stably transmits power to the rotating disk 9. The inner wall of the outer frame 1 is fixedly connected to the motor 11, which provides the original driving force for the entire automated clamping system. The output end of the motor 11 is fixedly connected to the worm gear 12, which is driven by the motor 11 and cooperates with the worm wheel 10 to achieve self-locking transmission. The worm gear 12 and the worm wheel 10 are meshed. The inner wall of the outer frame 1 is slidably connected to the sliding plate 2 14, which converts the motion transmitted from the connecting rod 3 13 into the linear sliding of the fixed plate 2 3 on the other side. The inner wall of the sliding plate 2 14 is rotatably connected to the connecting rod 3 13, which effectively transmits the rotational motion of the rotating disk 9 to the sliding plate 2 14 to ensure synchronization. The outer wall of the connecting rod 3 13 is rotatably connected to the inner wall of the connecting rod 2 8. The upper surface of the sliding plate 2 14 is fixedly connected to the lower surface of one of the fixed plates 2 3.

[0031] Specifically, the operator starts the motor 11, and the output end of the motor 11 immediately drives the worm gear 12 to rotate. Since the worm gear 12 and the worm wheel 10 are in a meshing transmission state, the rotation of the worm gear 12 will stably drive the worm wheel 10 to rotate. The rotating disk 9, which is fixed coaxially with the worm wheel 10, also rotates synchronously. The rotation of the rotating disk 9 distributes the power through two transmission branches. On the one hand, the connecting rod 16 is driven by the connecting rod 2 8 to swing around the rotating shaft 7, converting the rotational motion into reciprocating linear motion, thereby pulling the sliding plate 15 connected to it to slide on the inner wall of the outer frame 1. On the other hand, the rotation of the rotating disk 9 also pulls the connecting rod 3 13 at the same time, thereby driving the sliding plate 2 14 connected to it to slide, which can drive the anti-slip clamp 2 4 and anti-slip clamp 15 above to accurately center and clamp the workpiece.

[0032] Reference Figure 4 and Figure 5A knob 16 is provided on the upper surface of the fixed plate 2, providing a manual operation interface for starting or unlocking the clamp head. A threaded rod 17 is fixedly connected to the outer wall of the knob 16, converting the rotation of the knob 16 into the linear lifting motion of the lower pressure block 23. A fixed sleeve 18 is rotatably connected to the outer wall of the threaded rod 17, serving as the housing for quick-change components, accommodating and guiding locking mechanism components such as the locking block 19 and the sliding block 20. An installation component is provided inside the fixed sleeve 18, including the locking block 19, which extends under the action of the lower pressure block 23 to engage with the inner wall of the fixed plate 3, achieving mechanical locking. The outer wall of the locking block 19 is slidably connected to the inner wall of the fixed sleeve 18. A sliding block 20 is fixedly connected to the lower surface of the locking block 19, connecting the locking block 19 and sliding along the telescopic rod 22, used to compress or release the spring 21. The outer wall of the sliding block 20 is slidably connected to the telescopic rod 22, serving as a connection between the sliding block 20 and the spring. Spring 21 provides guidance and support. Spring 21 is sleeved on the outer wall of telescopic rod 22 to provide rebound force. When unlocking, it can automatically retract the locking block 19 into the fixed sleeve 18. The outer wall of threaded rod 17 is threadedly connected to a pressing block 23. By pressing the inclined surface of locking block 19, its vertical movement is converted into the horizontal extension action of locking block 19. The lower end of pressing block 23 is provided with a protrusion for pressing locking block 19. Locking block 19 is provided with an inclined surface that cooperates with the protrusion. One end of spring 21 is fixedly connected to the outer wall of sliding block 20, and the other end of spring 21 is fixedly connected to the inner wall of fixed sleeve 18. The outer wall of locking block 19 is slidably connected to the inner wall of fixed plate 2 3. The outer wall of fixed sleeve 18 is slidably connected to the inner wall of fixed plate 2 3. The outer wall of sliding plate 1 5 is slidably connected to the inner wall of outer frame 1. Worm gear 10 is set inside outer frame 1. Rotating disk 9 is set inside outer frame 1. Worm 12 is set inside outer frame 1.

[0033] Specifically, the operator needs to disassemble the fixing plate 2. This process requires no tools; simply turn the knob 16 clockwise manually. The knob 16 will drive the threaded rod 17 to rotate synchronously. Since the threaded rod 17 is threadedly connected to the lower pressure block 23, the rotation of the threaded rod 17 will cause the lower pressure block 23 to move smoothly downward along the axial direction. When the protrusion at the lower end of the lower pressure block 23 contacts and presses the preset inclined surface on the locking block 19, the downward thrust will be converted into a horizontal component force that causes the locking block 19 to extend outward against the elastic force of the spring 21, and drive the sliding block 20 to slide on the outer wall of the telescopic rod 22. By further compressing the spring 21, when the locking block 19 is fully extended and locked into the groove inside the fixing plate 2 3, the fixing plate 1 2 is reliably locked to the fixing plate 2 3. Conversely, when disassembly is required, simply turn the knob 16 counterclockwise, and the lower pressing block 23 will retract upward, releasing the pressure on the locking block 19. At this time, the compressed spring 21 will instantly rebound, pushing the sliding block 20 to reset, thereby pulling the locking block 19 back into the fixing sleeve 18. After the locking state is released, the fixing sleeve 18, together with the entire fixing plate 1 2 and the replacement components, can be moved and removed from the fixing plate 2 3. The whole process is extremely quick and convenient.

[0034] Working principle: When this anti-slip precision positioning fixture is needed, firstly, when the workpiece needs to be clamped, the motor 11 is started. The output end of the motor 11 drives the worm gear 12 to rotate. Because the worm gear 12 meshes with the worm wheel 10, the rotation of the worm gear 12 will drive the worm wheel 10 to rotate. The rotation of the worm wheel 10 will drive the rotating disk 9 to rotate. At the same time, the rotation of the rotating disk 9 will drive the connecting rod 8 to rotate, which in turn will drive the connecting rod 6 to rotate along the outer wall of the rotating shaft 7. When the connecting rod 6 moves, it will pull the sliding plate 5 to slide inside the outer frame 1. At the same time, the rotation of the rotating disk 9 will pull the connecting rod 13 to rotate, which will then pull the sliding plate 14 to slide synchronously with the sliding plate 5.

[0035] Furthermore, when it is necessary to replace the anti-slip clamp 24 with the anti-slip clamp 15, the threaded rod 17 is rotated by turning the knob 16. When the threaded rod 17 rotates, it will cause the lower pressure block 23 to move downward. When the protrusion of the lower pressure block 23 presses against the inclined surface of the locking block 19, the locking block 19 will cause the sliding block 20 to press against the spring 21, so that the sliding block 20 slides on the outer wall of the telescopic rod 22. When the locking block 19 is inserted into the interior of the fixing plate 23, the locking block 19 and the fixing plate 23 can be locked. When it is necessary to remove the anti-slip clamp 24, simply turn the knob 16 in the opposite direction to make the lower pressure block 23 move upward. When the lower pressure block 23 moves upward, the spring 21 rebounds, pushing the locking block 19 to rebound and retract into the interior of the fixing sleeve 18. At this time, the fixing sleeve 18 can be slid along the inner wall of the fixing plate 23. At this time, the fixing plate 12 along with the entire replacement assembly can be removed from the fixing plate 23, achieving the effect of quickly removing the anti-slip clamp 24.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-slip precision positioning fixture, comprising an outer frame (1), characterized in that: The upper surface of the outer frame (1) is slidably connected to two fixing plates (3), and the upper surfaces of the two fixing plates (3) are fitted with fixing plates (2). The upper surfaces of the two fixing plates (2) are provided with clamping components. The clamping assembly includes anti-slip clamp two (4) and anti-slip clamp one (15). Anti-slip clamp two (4) and anti-slip clamp one (15) are respectively fixedly connected to the upper surfaces of the two fixed plates one (2). Sliding plate one (5) and sliding plate two (14) are respectively fixedly connected to the lower surfaces of the two fixed plates two (3). A connecting rod one (6) is rotatably connected to the inner wall of the sliding plate one (5). A rotating shaft (7) is rotatably connected inside the connecting rod one (6). A connecting rod two (8) is rotatably connected to the outer wall of the rotating shaft (7). A rotating disk (9) is fixedly connected to one end of the connecting rod two (8). A worm gear (10) is fixedly connected to the lower surface of the rotating disk (9), a motor (11) is fixedly connected to the inner wall of the outer frame (1), a worm (12) is fixedly connected to the output end of the motor (11), the worm (12) meshes with the worm gear (10), a sliding plate two (14) is slidably connected to the inner wall of the outer frame (1), a connecting rod three (13) is rotatably connected to the inner wall of the sliding plate two (14), the outer wall of the connecting rod three (13) is rotatably connected to the inner wall of the connecting rod two (8), and the upper surface of the sliding plate two (14) is fixedly connected to the lower surface of one of the fixed plates two (3).

2. The anti-slip precision positioning fixture according to claim 1, characterized in that: A knob (16) is provided on the upper surface of the fixing plate (2). A threaded rod (17) is fixedly connected to the outer wall of the knob (16). A fixing sleeve (18) is rotatably connected to the outer wall of the threaded rod (17). An installation component is provided inside the fixing sleeve (18).

3. The anti-slip precision positioning fixture according to claim 2, characterized in that: The installation assembly includes a locking block (19), the outer wall of which is slidably connected to the inner wall of the fixing sleeve (18), a sliding block (20) is fixedly connected to the lower surface of the locking block (19), a telescopic rod (22) is slidably connected to the outer wall of the sliding block (20), a spring (21) is sleeved on the outer wall of the telescopic rod (22), and a pressing block (23) is threadedly connected to the outer wall of the threaded rod (17).

4. The anti-slip precision positioning fixture according to claim 3, characterized in that: The lower end of the pressing block (23) is provided with a protrusion for pressing the card block (19), and the card block (19) is provided with an inclined surface that cooperates with the protrusion.

5. The anti-slip precision positioning fixture according to claim 3, characterized in that: One end of the spring (21) is fixedly connected to the outer wall of the sliding block (20), and the other end of the spring (21) is fixedly connected to the inner wall of the fixed sleeve (18).

6. The anti-slip precision positioning fixture according to claim 3, characterized in that: The outer wall of the card block (19) is slidably connected to the inner wall of the second fixing plate (3), and the outer wall of the fixing sleeve (18) is slidably connected to the inner wall of the second fixing plate (3).

7. The anti-slip precision positioning fixture according to claim 1, characterized in that: The outer wall of the sliding plate (5) is slidably connected to the inner wall of the outer frame (1), and the worm gear (10) is disposed inside the outer frame (1).

8. The anti-slip precision positioning fixture according to claim 1, characterized in that: The rotating disk (9) is located inside the outer frame (1), and the worm gear (12) is located inside the outer frame (1).

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