Multi-angle adjusting mechanism

Abstract

A kind of multi-angle adjusting mechanism, comprising: L-shaped base, sliding groove being arranged on L-shaped base, hinged block being located on L-shaped base, fixed rod being connected to the rear end of hinged block, clamp being arranged to the front end of hinged block and adjusting assembly being connected with hinged block.The utility model has the advantages that by the ball joint of ball bearing and hinged block, the rotational freedom of multiple axes is provided;Combining the arc-shaped sliding pair of curved guide rail and the linear sliding pair of slider in sliding groove, the complex pitching, deflection and position adjustment of clamp in space is realized, the adjusting precision is high, the curved guide rail allows stepless adjustment, combined with the design of telescopic clamp, it can adapt to various angle requirements and different size workpieces, and the application range is wide.Limiting bolt is directly used to compress the curved guide rail to lock the moving block, the locking force is large, the friction torque is strong, and the angle deviation caused by external force or vibration after adjustment is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of mechanical device technology, specifically a multi-angle adjustment mechanism. Background Technology

[0002] In the field of machinery, it is often necessary to adjust the angle of workpieces, instruments, or tools and reliably fix them to meet specific operational, measurement, or processing requirements. This includes adjusting the angle at which a fixture holds a workpiece during machining, or calibrating the pointing of sensors during equipment debugging.

[0003] Existing angle adjustment mechanisms mostly employ simple hinge connections with bolt locking, or use indexing plate structures. While the hinge-bolt structure is simple, the adjustment angle is limited, and after locking, it is prone to slight deviations due to vibration or load, resulting in insufficient stability and making it difficult to achieve precise, stepless angle adjustment. Indexing plate structures, while providing fixed indexing positions, lack flexibility, cannot achieve precise setting of arbitrary angles, and are relatively complex and costly. Furthermore, whether using simple hinges or indexing plates, the adjustment axis is usually single, making it difficult to adjust complex spatial angles. For applications requiring fine, multi-degree-of-freedom angle adjustments within a small range and rapid locking, existing technologies suffer from low adjustment accuracy, poor stability, inconvenient operation, and limited adaptability. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide a multi-angle adjustment mechanism.

[0005] To solve the above problems, the technical solution of this utility model is: a multi-angle adjustment mechanism, characterized in that it includes: an L-shaped base, a sliding groove disposed on the L-shaped base, a hinge block located on the L-shaped base, a fixing rod connected to the rear end of the hinge block, a clamp disposed at the front end of the hinge block, and an adjustment component connected to the hinge block.

[0006] Furthermore, the adjustment assembly includes a ball bearing, a connecting rod, a movable block, a limiting bolt, a curved guide rail, a limiting plate, a fixed block, and a slider. The front end of the connecting rod is fixedly connected to the movable block. The movable block is sleeved on the outside of the curved guide rail and can slide along the curved guide rail. The lower end of the curved guide rail is inserted into and fixed in the fixed block. The fixed block is fixedly connected to the upper inclined surface of the slider. The slider is slidably connected to the sliding groove of the L-shaped base. The limiting bolt is threaded onto the movable block, and its end can abut against the surface of the curved guide rail to lock the position of the movable block on the curved guide rail. The limiting plate is fixedly connected to the upper end of the curved guide rail to limit the sliding range of the movable block and prevent it from coming off. The ball bearing is fixedly connected to the rear end of the connecting rod and forms a ball joint with the hinge block.

[0007] Furthermore, the fixture includes a fixture disk, telescopic plates, and support plates. Two telescopic plates are telescopically connected to the two end faces of the fixture disk to accommodate workpieces of different sizes. The support plates are fixedly connected to the lower end of the fixture disk, providing additional support and stability. The fixture disk is fixedly connected to the front end of the moving block.

[0008] Furthermore, the ball joint between the ball and the hinge block reduces friction and allows for multi-directional rotation, which is one of the keys to achieving multi-angle adjustment.

[0009] Furthermore, the curved guide rail is an arc-shaped guide rail with a specific radius of curvature, which allows the moving block to slide along a precise arc path, thereby achieving smooth angle adjustment that conforms to geometric laws.

[0010] Furthermore, by tightening the limiting bolt, the moving block can be securely locked in any current position on the curved guide rail, thereby fixing the pitch angle of the fixture and the workpiece held on it.

[0011] Furthermore, the fixed connection between the limiting piece and the upper end of the curved guide rail constitutes a physical stop for the sliding of the moving block, ensuring the safety of the mechanism operation.

[0012] Furthermore, the telescopic plate, through its telescopic structure with the clamping plate, can adjust the clamping width of the clamp, thereby adapting to clamping workpieces of different sizes and improving the versatility of the mechanism.

[0013] Furthermore, in the adjustment assembly, the coordinated movement of the connecting rod, the moving block, and the slider, combined with the arc constraint of the curved guide rail and the linear movement of the slider in the sliding groove, together achieves precise and flexible adjustment of the fixture in multiple directions and angles within space.

[0014] Furthermore, rubber pads are fixedly connected to the four corners of the lower end face of the L-shaped base.

[0015] The advantages of this invention compared to existing technologies are as follows: The advantages of this invention lie in its ball joint connection between the ball bearing and the hinge block, which provides rotational freedom around multiple axes. Combined with the arc-shaped sliding pair of the curved guide rail and the linear sliding pair of the slider within the sliding groove, it enables complex pitch, deflection, and position adjustments of the fixture in space, achieving high adjustment precision. The curved guide rail allows for stepless adjustment, and the telescopic fixture design can adapt to various angle requirements and workpieces of different sizes, making it widely applicable. The moving block is locked by directly pressing the curved guide rail with a limit bolt, resulting in a large locking force and strong frictional torque, effectively preventing angular deviation caused by external forces or vibrations after adjustment, ensuring the stability of the working state. The integrated curved guide rail, sliding groove, ball joint, and other mechanisms create a compact structure with high space utilization. All components work collaboratively, resulting in a short transmission chain, good rigidity, intuitive adjustment, and simple and quick locking operation. The limit plate design avoids the risk of excessive movement of the moving block, improving safety and convenience. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention. Figure 1 ; Figure 2 This is a three-dimensional schematic diagram of the present invention. Figure 2 ; Figure 3 This is a three-dimensional schematic diagram of the present invention. Figure 3 ; Figure 4 This is a three-dimensional schematic diagram of the adjustment component of this utility model. Figure 1 ; Figure 5 This is a three-dimensional schematic diagram of the adjustment component of this utility model. Figure 2 ; Figure 6 This is a three-dimensional schematic diagram of the adjustment component of this utility model. Figure 3 .

[0017] As shown in the figure: 1. L-shaped base; 2. Sliding groove; 3. Hinge block; 4. Adjustment component; 401. Ball bearing; 402. Connecting rod; 403. Moving block; 404. Limiting bolt; 405. Curved guide rail; 406. Limiting piece; 407. Fixing block; 408. Slider; 5. Fixing rod; 6. Fixture; 601. Fixture plate; 602. Telescopic plate; 603. Support piece. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0019] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0020] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0021] like Figures 1 to 6 As shown, the technical solution of this utility model is as follows: a multi-angle adjustment mechanism, the base of which is an L-shaped base 1, usually made of aluminum alloy, steel or other metal materials with sufficient strength and rigidity, or formed by casting or welding. The horizontal part of the L-shaped base 1 is used for placement or fixing to a workbench or other equipment, while its vertical part serves as the mounting base for other functional components. A sliding groove 2 is machined on the vertical part of the L-shaped base 1. The sliding groove 2 is selected as a T-shaped groove or a similar guide groove structure to ensure that the connected slider 408 can slide smoothly and accurately in a straight line without coming out. The hinge block 3 is rotatably connected to the upper end or a specific position of the vertical part of the L-shaped base 1 through a slewing bearing at its lower part or a simple shaft hole fit. One end of the fixing rod 5 is fixedly connected to the rear part of the hinge block 3, and the front part of the hinge block 3 is used to form a connection with the adjustment component 4.

[0022] like Figures 1 to 6As shown, the adjustment component 4 is the core part for realizing the multi-angle adjustment function, including: the shape of the slider 408 matches the sliding groove 2, and it can slide back and forth along the length of the sliding groove 2. The upper part of the slider 408 is usually designed with an inclined surface. The fixing block 407 is firmly fixed to the upper inclined surface of the slider 408 by screws, welding or integral molding. The fixing block 407 has a hole or groove that matches the shape of the lower end of the curved guide rail 405. The curved guide rail 405 is a section of arc-shaped rigid guide rail with a constant radius of curvature. Its lower end is precisely inserted into and fixed in the hole and groove of the fixing block 407. The arc center of the curved guide rail 405 should be roughly coordinated with the connection rotation center of the hinge block 3 and the L-shaped base 1 to optimize the motion trajectory. The material of the curved guide rail 405 should have high hardness and wear resistance, such as quenched steel or surface-treated alloy steel. The moving block 403 has a through hole or sliding sleeve inside that matches the cross-sectional shape of the curved guide rail 405, so that it can move smoothly. The movable block 403 is smoothly fitted onto the curved guide rail 405 and slides along its arc. The front end of the movable block 403 has a mounting surface for fixing the clamping disc 601. The limiting bolt 404, typically a bolt, is threaded onto the movable block 403. When the limiting bolt 404 is tightened, its end presses against the side surface or a specific plane of the curved guide rail 405, generating significant friction, thereby locking the movable block 403 in its current position on the curved guide rail 405. The limiting piece 406 is fixedly installed on the curved guide rail 405. The upper end of 05 acts as a mechanical stop to prevent the moving block 403 from accidentally detaching from the upper end of the curved guide rail 405 during sliding, thus providing a safety protection function. The front end of the connecting rod 402 is fixedly connected to the rear end of the moving block 403. A ball bearing 401 is installed at the rear end of the connecting rod 402. The ball bearing 401 is embedded in the ball socket designed at the front of the hinge block 3 to form a ball hinge. This connection method allows the connecting rod 402 and its connected components to swing arbitrarily around the center of the ball bearing 401 within a certain cone angle range.

[0023] like Figures 1 to 6 As shown, the fixture 6 is used to directly clamp the workpiece. It includes a fixture disk 601, which is the main structure of the fixture and is fixed to the front end of the moving block 403 by bolts or buckles. The center of the fixture disk 601 may have a through hole or mounting reference. Two telescopic plates 602 are telescopically installed on the left and right sides of the fixture disk 601 by means of guide rails, slides or guide rods, etc. They can be driven to move synchronously or independently by manual screws, worm gear mechanisms or cylinders to adjust the width of the clamping opening. The support plate 603 is connected to the lower edge of the fixture disk 601 and can provide additional lower end support for the clamped longer workpieces to increase stability.

[0024] In practical use, this mechanism is connected and fixed to other devices. The limiting bolt 404 is then released, allowing the moving block 403 to slide along the arc of the curved guide rail 405. The clamp 6 or the moving block 403 is pushed, causing it to move up or down along the curved guide rail 405. Because the curved guide rail 405 is arc-shaped, the pitch angle of the clamp disc 601 changes accordingly. When the desired pitch angle is reached, the limiting bolt 404 is tightened, using friction to firmly lock the moving block 403 onto the curved guide rail 405.

[0025] The slider 408 can slide within the sliding groove 2 of the L-shaped base 1. By pushing the entire adjustment assembly 4 together with the clamp 6 to move left and right along the sliding groove 2, the lateral position of the clamp 6 in the horizontal plane can be changed, which will also cause a small change in the deflection angle of the clamp 6. This can be used as a coarse adjustment of the deflection angle.

[0026] Because the connecting rod 402 is ball-jointed to the hinge block 3 via the ball bearing 401, even with the limit bolt 404 locked and the slider 408 fixed in position, the orientation of the clamp 6 can still be fine-tuned within a small range and with multiple degrees of freedom. For example, the clamp 6 can be slightly pushed or rotated to make it deflect, tilt, or perform a combination of movements around the center of the ball bearing 401 at a small angle. This fine-tuning is very flexible and can compensate for residual deviations after coarse adjustment, achieving extremely high angular positioning accuracy. The friction at the ball joint is usually sufficient to maintain the adjusted posture.

[0027] After the angle adjustment is completed, the telescopic plate 602 of the clamp 6 is operated to adapt it to the width of the workpiece and reliably clamp it. The support plate 603 can provide auxiliary support as needed.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multi-angle adjustment mechanism, characterized in that, include: An L-shaped base (1), a sliding groove (2) on the L-shaped base (1), a hinge block (3) on the L-shaped base (1), a fixing rod (5) connected to the rear end of the hinge block (3), a clamp (6) on the front end of the hinge block (3), and an adjustment assembly (4) connected to the hinge block (3). The adjustment assembly (4) includes a ball bearing (401), a connecting rod (402), a moving block (403), a limiting bolt (404), a curved guide rail (405), a limiting piece (406), a fixing block (407), and a slider (408). The front end of the rod (402) is fixedly connected to the moving block (403), the moving block (403) is sleeved on the outside of the curved guide rail (405), the lower end of the curved guide rail (405) is inserted into the fixed block (407), the fixed block (407) is fixedly connected to the upper inclined surface of the slider (408), the slider (408) is slidably connected to the sliding groove (2), the limiting bolt (404) is threaded to connect the moving block (403) and the curved guide rail (405) to abut against each other, and the limiting piece (406) is fixedly connected to the upper end of the curved guide rail (405).

2. The multi-angle adjustment mechanism according to claim 1, characterized in that: The clamp (6) includes a clamping disc (601), a telescopic plate (602), and a support plate (603). The two telescopic plates (602) are telescopically connected to the two end faces of the clamping disc (601). The support plate (603) is fixedly connected to the lower end of the clamping disc (601). The clamping disc (601) is fixedly connected to the front end of the moving block (403).

3. The multi-angle adjustment mechanism according to claim 1, characterized in that: The ball (401) is fixedly connected to the rear end of the connecting rod (402) to form a ball joint with the hinge block (3) to reduce friction and allow multi-directional rotation.

4. The multi-angle adjustment mechanism according to claim 1, characterized in that: The curved guide rail (405) is an arc-shaped guide rail, which allows the moving block (403) to slide along the arc path to achieve smooth angle adjustment.

5. The multi-angle adjustment mechanism according to claim 1, characterized in that: The moving block (403) can be locked at any position on the curved guide rail (405) by the limiting bolt (404) to fix the initial angle of the clamp (6).

6. The multi-angle adjustment mechanism according to claim 1, characterized in that: The limiting piece (406) restricts the movement range of the moving block (403) to prevent the moving block (403) from over-positioning.

7. The multi-angle adjustment mechanism according to claim 2, characterized in that: The telescopic plate (602) cooperates with the clamping plate (601) to accommodate workpieces of different sizes.

8. The multi-angle adjustment mechanism according to claim 1, characterized in that: The coordinated movement of the connecting rod (402), moving block (403) and slider (408) in the adjustment component (4) enables the multi-angle precision adjustment of the fixture (6) through the curved path of the curved guide rail (405) and the sliding groove (2).

9. A multi-angle adjustment mechanism according to claim 1, characterized in that: Rubber pads (7) are fixedly connected to the four corners of the lower end face of the L-shaped base (1).

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