A fixing device for hardware machining

Abstract

The utility model relates to hardware machining technical field discloses a kind of fixing device for hardware machining, including fixed base, the outer wall both sides of fixed base are provided with handle, the inside sliding connection of fixed base has three sliding seats, the inside screw thread connection of one of sliding seat has threaded rod, two handle is respectively fixedly connected at the both ends of threaded rod, the lower surface of three sliding seats is all slidingly provided with guide rail, the upper surface of three sliding seats is all fixedly connected with support seat. In the utility model, the design of handle driving threaded rod rotation, the cooperation of thread transmission and guide rail orientation is utilized, the uniform transmission of force is realized, single component overload is avoided, not only the positioning accuracy of fixing device to hardware is improved, but also the overall clamping stability is enhanced through mutual check and balance between structure, precision deviation caused by workpiece shaking in machining process can be effectively reduced, it is applicable to high-precision hardware machining scene.

Description

Technical Field

[0001] This utility model relates to the field of hardware processing technology, and in particular to a fixing device for hardware processing. Background Technology

[0002] In the field of metal processing, the workpiece fixing accuracy and clamping efficiency directly affect processing quality and production efficiency. As the manufacturing industry moves towards higher precision and automation, various metal parts (such as complex-shaped parts and precision components) face higher demands on the reliability, adaptability, and ease of operation of fixing devices during cutting, stamping, and welding processes. Traditional fixing devices often employ a single clamping structure, which struggles to meet the rapid positioning needs of metal parts of different specifications and shapes. Especially in scenarios requiring multi-directional coordinated fixing, uneven clamping force distribution or insufficient structural linkage often leads to workpiece displacement, affecting processing accuracy. Therefore, developing a fixing device for metal processing that can achieve multi-directional coordinated clamping, adaptive adjustment, and stable reliability has become a pressing technical problem in this field.

[0003] In existing technologies, metal processing fixing devices typically employ simple mechanical structures such as threaded fastening, hydraulic clamping, or manual clamping. For example, some devices use a single threaded rod to drive the movement of a single clamping arm, relying on manual tightening of the threads to fix the workpiece; others use a symmetrically distributed slide rail-slider structure, with the position of the clamping arms adjusted individually via handles. The technical principles of these structures are mainly based on unidirectional force transmission or simple mechanical linkage, with the core being the limitation of the workpiece through a single power source or distributed adjustment mechanism. However, such devices generally lack a transmission design with multi-component coordinated linkage, and the application of clamping force depends on the consistency of manual operation, making it difficult to achieve a uniform and stable clamping effect.

[0004] Existing clamping devices typically employ a single, relative clamping structure. When fixing workpieces with irregular shapes or significant dimensional differences, the clamping components struggle to move synchronously, easily leading to excessive localized stress and deformation of the workpiece, or wobbling due to insufficient clamping force. This phenomenon is particularly pronounced in high-precision machining scenarios, causing not only dimensional deviations but also potential equipment malfunctions or safety hazards due to workpiece displacement. This invention, through its innovative design of multi-directional collaborative clamping force, aims to address the problems of insufficient positioning accuracy and poor clamping stability caused by structural linkage defects in existing technologies. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a fixing device for hardware processing, which aims to improve the existing fixing devices that usually adopt a single relative clamping structure. When it is necessary to fix workpieces with irregular shapes or large size differences, it is difficult for each clamping component to move synchronously, which can easily lead to excessive local force on the workpiece and deformation, or wobbling due to insufficient clamping force.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for hardware processing, including a fixed base, handles provided on both sides of the outer wall of the fixed base, three sliding seats slidably connected inside the fixed base, one of the sliding seats having a threaded rod threadedly connected inside, two handles respectively fixedly connected to the two ends of the threaded rod, guide rails slidably engaged on the lower surfaces of the three sliding seats, support seats fixedly connected to the upper surfaces of the three sliding seats, a linkage component provided on one side of the outer wall of the support seat, a connecting plate fixedly connected to the upper surface of the support seat, a push seat fixedly connected to the outer wall of the connecting plate, and a clamp provided on one side of the outer wall of the push seat;

[0007] The linkage assembly includes three links and a triangular plate. One end of each of the three links is rotatably connected to the inside of the support base, and the other end of each of the three links is rotatably connected to the apex of the triangular plate.

[0008] Furthermore, a positioning seat is fixedly connected inside the propulsion seat, and a disassembly and assembly assembly is provided inside the positioning seat. The positioning seat is located on one side of the clamp.

[0009] Furthermore, a positioning plate is fixedly connected to one side of the outer wall of the fixture, and the positioning plate has an installation hole inside. The outer wall of the positioning plate is slidably connected to the outer wall of the positioning seat.

[0010] Furthermore, the disassembly and assembly assembly includes a locking block, the outer wall of which is slidably connected to the positioning seat and the mounting hole inside the locking block, the top of which is provided with an external thread, a limit ring is fixedly connected to the lower side of the outer wall of the locking block, a slide rod is fixedly connected inside the locking block, a spring is sleeved on the outer wall of the slide rod, and a threaded cap is threadedly connected to the outer wall of the locking block through an external thread.

[0011] Furthermore, the outer wall of the slide rod is slidably connected to the inside of the positioning seat, and the slide rod is used to limit the movement of the spring and the locking block.

[0012] Furthermore, one end of the spring is fixedly connected to the inside of the locking block, and the other end of the spring is fixedly connected to the inside of the positioning seat.

[0013] Furthermore, the lower surface of the guide rail is fixedly connected to the interior of the fixed base, and the guide rail is used to guide the movement of the sliding seat.

[0014] Furthermore, the threaded rod is rotatably connected inside the fixed base, and the internal thread of the sliding seat matches the external thread of the threaded rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the design of driving the threaded rod to rotate through the handle utilizes the cooperation of threaded transmission and guide rail to make the sliding seat drive the support seat to move. Then, through the linkage structure of the connecting rod and the triangular plate, the three support seats can synchronously drive the push seat and the fixture to move, forming a multi-directional synergistic clamping force. It can adaptively adjust for hardware parts of different specifications, ensuring a smooth and non-deviation-free clamping process; it achieves uniform force transmission and avoids overload of a single component. It not only improves the positioning accuracy of the fixing device for hardware parts, but also enhances the overall clamping stability through the mutual balancing between structures. It can effectively reduce the accuracy deviation caused by workpiece shaking during processing and is suitable for high-precision hardware processing scenarios.

[0017] 2. In this utility model, the mating structure of the threaded cap and the locking block, through the elastic linkage design of the external thread and the spring, allows the clamp to be disassembled simply by rotating to remove the threaded cap and pressing the locking block to release the limit. During installation, the spring rebound enables the locking block to automatically embed into the mounting hole of the positioning plate. The clamp can be quickly disassembled and assembled without additional tools. This not only reduces the difficulty of clamp replacement and shortens the equipment debugging time, but also ensures precise docking between the clamp and the transmission mechanism of the fixing device after installation through the precise positioning of the positioning seat and the locking block. At the same time, the buffering effect of the spring can reduce mechanical impact during installation, extend the service life of the clamp and the fixing device, and significantly improve the changeover efficiency and equipment maintenance convenience of the hardware processing production line. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a fixing device for hardware processing proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the fixing base of a hardware processing fixing device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the handle side structure of a hardware processing fixing device proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of one side of the push seat structure of a fixing device for hardware processing proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the pusher seat of a fixing device for hardware processing proposed in this utility model;

[0023] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0024] Legend:

[0025] 1. Fixed base; 2. Handle; 3. Sliding seat; 4. Guide rail; 5. Threaded rod; 6. Connecting rod; 7. Triangular plate; 8. Support seat; 9. Connecting plate; 10. Push seat; 11. Clamp; 12. Positioning seat; 13. Slide rod; 14. Spring; 15. Locking block; 16. External thread; 17. Limiting ring; 18. Threaded cap; 19. Positioning plate; 20. Mounting hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-4This utility model provides an embodiment of a fixing device for hardware processing, including a fixed base 1, which provides a stable mounting surface to ensure the positioning accuracy of all moving parts. Handles 2 are provided on both sides of the outer wall of the fixed base 1. Rotation drives a threaded rod 5 to rotate, converting manual force into the rotational torque required for mechanical transmission, thus achieving active control of the clamping action. Three sliding seats 3 are slidably connected inside the fixed base 1. One of the sliding seats 3 is threadedly connected to a threaded rod 5. Through the threaded engagement with the sliding seat 3, the rotational motion of the handle 2 is converted into the linear motion of the sliding seat 3. Simultaneously, the self-locking characteristic of the threaded transmission maintains the stability of the clamping force. Two handles 2 are respectively fixedly connected to the two ends of the threaded rod 5, and the lower surfaces of the three sliding seats 3 are engaged. The sliding seat 3 is equipped with a guide rail 4, which constrains the movement trajectory of the sliding seat 3 through a rectangular or T-shaped groove structure to prevent radial wobbling when driven by the threaded rod 5, ensuring precise axial translation of the sliding seat 3. Support seats 8 are fixedly connected to the upper surfaces of all three sliding seats 3. The sliding seats 3 engage with the threaded rod 5 via internal threads and move linearly under the guidance of the guide rail 4, driving the support seats 8 to move synchronously and transmitting clamping power. A linkage component is provided on one side of the outer wall of the support seat 8, and a connecting plate 9 is fixedly connected to the upper surface of the support seat 8. A pusher seat 10 is fixedly connected to the outer wall of the connecting plate 9, and a clamp 11 is provided on one side of the outer wall of the pusher seat 10. The clamp 11 contacts the hardware through its front clamping surface to achieve physical fixation. Different specifications of clamps 11 can be replaced according to the shape of the workpiece, improving the versatility of the device.

[0028] The linkage assembly includes three connecting rods 6 and a triangular plate 7. One end of each of the three connecting rods 6 is rotatably connected to the inside of the support base 8. The connecting rods 6 convert the linear motion of the support base 8 into the rotational motion of the triangular plate 7, and decompose the rotational force of the triangular plate 7 into the swing driving force of the other two sets of connecting rods 6, so as to realize the synchronous transmission of the three-way clamping force. The other end of each of the three connecting rods 6 is rotatably connected to the apex of the triangular plate 7 and fixed to the base bracket through the central shaft, so as to convert the thrust of the single-sided connecting rod 6 into the symmetrically distributed three-way thrust, ensuring that the three support bases 8 move synchronously and with equal force, forming a ring-shaped clamping effect. The lower surface of the guide rail 4 is fixedly connected to the inside of the fixed base 1. The guide rail 4 is used to guide the movement of the sliding seat 3. The threaded rod 5 is rotatably connected to the inside of the fixed base 1, and the internal thread of the sliding seat 3 matches the external thread of the threaded rod 5.

[0029] Specifically, the design of driving the threaded rod 5 to rotate via the handle 2 utilizes the threaded transmission between the threaded rod 5 and the sliding seat 3, and the guiding cooperation of the guide rail 4, to make the sliding seat 3 drive the support seat 8 to move. Through the linkage structure of the connecting rod 6 and the triangular plate 7, the three support seats 8 can synchronously drive the push seat 10 and the clamp 11 to move, forming a multi-directional cooperative clamping force. This structure can adaptively adjust for hardware parts of different specifications. Relying on the precision guidance of the guide rail 4 and the geometric symmetry of the triangular plate 7, it ensures a smooth and non-offset clamping process. The transmission mechanism achieves uniform force transmission through mechanical linkage, avoiding overload of a single component, such as the support seat 8 or the connecting rod 6. It not only improves the positioning accuracy of the hardware parts through multi-directional balancing, but also enhances the overall clamping stability, effectively reducing the accuracy deviation caused by workpiece shaking during processing, and is suitable for high-precision processing scenarios.

[0030] Reference Figures 4-6 The propulsion seat 10 is internally fixedly connected to a positioning seat 12, which is fixed to the propulsion seat 10. A positioning plate 19 is integrated into the bottom of the clamp 11. The two are engaged through a slot to achieve the initial positioning of the clamp 11, ensuring accurate installation direction. The positioning seat 12 is internally equipped with a disassembly and assembly component. The positioning seat 12 is located on one side of the clamp 11, and the positioning plate 19 is fixedly connected to one side of the outer wall of the clamp 11. The positioning plate 19 has an installation hole 20 inside. The outer wall of the positioning plate 19 is slidably connected to the outer wall of the positioning seat 12. The disassembly and assembly component includes a locking block 15. The outer wall of the locking block 15 is slidably connected to the positioning seat 12 and the installation hole 20 inside. The installation hole 20 is pre-set in the positioning plate 19 and precisely engages with the wedge-shaped structure at the front end of the locking block 15. The top of the locking block 15 is provided with an external thread 16, and a limit ring 17 is fixedly connected to the lower side of the outer wall of the locking block 15. A slide rod 13 is fixedly connected inside the block 15. A spring 14 is sleeved on the outer wall of the slide rod 13. The spring 14 provides a restoring force to push the block 15 into the mounting hole 20 of the positioning plate 19, thereby achieving axial positioning of the clamp 11. When the block 15 is pressed, the spring 14 is compressed, releasing the lock and facilitating disassembly. A threaded cap 18 is threadedly connected to the outer wall of the block 15 through an external thread 16. The threaded cap 18 engages with the external thread 16 of the block 15 through an internal thread. After tightening, the radial clearance is eliminated through conical surface contact, preventing the clamp 11 from loosening due to processing vibration, while also providing operational convenience. The outer wall of the slide rod 13 is slidably connected inside the positioning seat 12. The slide rod 13 is used to limit the movement of the spring 14 and the block 15. One end of the spring 14 is fixedly connected inside the block 15, and the other end of the spring 14 is fixedly connected inside the positioning seat 12.

[0031] Specifically, the mating structure of the threaded cap 18 and the locking block 15, through the elastic linkage of the external thread 16 and the spring 14, enables the quick assembly and disassembly of the fixture 11: during disassembly, rotate to remove the threaded cap 18, press the locking block 15 to make it slide within the positioning seat 12 and compress the spring 14, and the fixture 11 can be removed after the locking block 15 disengages from the mounting hole 20 of the positioning plate 19; during installation, align the positioning plate 19 with the positioning seat 12, the spring 14 rebounds and pushes the locking block 15 into the mounting hole 20 for limit positioning, and then tighten the threaded cap 18 to fix it. This can be done without tools, reducing the difficulty of replacing the fixture 11 and shortening the equipment debugging time; the precise positioning of the positioning seat 12 and the locking block 15 ensures that the fixture 11 and the transmission mechanism, such as the push seat 10, are precisely connected, and the buffering effect of the spring 14 reduces the installation impact, extends the service life of the fixture 11 and the fixed base 1 and other components, and significantly improves the changeover efficiency and maintenance convenience of the production line.

[0032] Working principle: When the hardware processing fixing device is needed, first place the hardware on the fixed base 1, then drive the threaded rod 5 to rotate through the handle 2. With the thread relationship between the threaded rod 5 and the sliding seat 3, and the guidance of the guide rail 4, the sliding seat 3 drives the support seat 8 to move. Then, the movement of the support seat 8 drives one end of the connecting rod 6 to move, thereby driving the triangular plate 7 to rotate through the connecting rod 6. In turn, the triangular plate 7 drives the other two connecting rods 6 to move, so that the three support seats 8 drive the push seat 10 and the clamp 11 to move through the connecting plate 9, thereby stably clamping and fixing the hardware.

[0033] Furthermore, the threaded cap 18 rotates on the outer wall of the locking block 15, engaging with the external thread 16 to easily remove the threaded cap 18. Then, pressing the external thread 16 causes it to slide inside the mounting hole 20 and the positioning seat 12, causing the spring 14 to retract. When the locking block 15 is fully moved inside the positioning seat 12, it disengages from the positioning plate 19, allowing the clamp 11 to be removed. During installation, simply place the positioning plate 19 back onto the outer wall of the positioning seat 12. At this point, the spring 14 is no longer under force and rebounds, pushing the locking block 15 into the pre-set mounting hole 20 inside the positioning plate 19 to limit the clamp 11. Finally, the threaded cap 18 is installed for further fixation.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 fixing device for hardware processing, comprising a fixing base (1), characterized in that: Handles (2) are provided on both sides of the outer wall of the fixed base (1). Three sliding seats (3) are slidably connected inside the fixed base (1). One of the sliding seats (3) is threadedly connected to a threaded rod (5). The two handles (2) are respectively fixedly connected to the two ends of the threaded rod (5). The lower surfaces of the three sliding seats (3) are all fitted with guide rails (4). The upper surfaces of the three sliding seats (3) are all fixedly connected with support seats (8). A linkage component is provided on one side of the outer wall of the support seat (8). A connecting plate (9) is fixedly connected to the upper surface of the support seat (8). A push seat (10) is fixedly connected to the outer wall of the connecting plate (9). A clamp (11) is provided on one side of the outer wall of the push seat (10). The linkage assembly includes three links (6) and a triangular plate (7). One end of each of the three links (6) is rotatably connected to the inside of the support base (8), and the other end of each of the three links (6) is rotatably connected to the apex of the triangular plate (7).

2. The fixing device for hardware processing according to claim 1, characterized in that: The propulsion seat (10) is fixedly connected to a positioning seat (12), and the positioning seat (12) is provided with a disassembly and assembly assembly. The positioning seat (12) is located on one side of the clamp (11).

3. The fixing device for hardware processing according to claim 2, characterized in that: A positioning plate (19) is fixedly connected to one side of the outer wall of the clamp (11). The positioning plate (19) has an installation hole (20) inside. The outer wall of the positioning plate (19) is slidably connected to the outer wall of the positioning seat (12).

4. The fixing device for hardware processing according to claim 3, characterized in that: The disassembly and assembly assembly includes a locking block (15). The outer wall of the locking block (15) is slidably connected to the inside of the positioning seat (12) and the mounting hole (20). The top of the locking block (15) is provided with an external thread (16). A limit ring (17) is fixedly connected to the lower side of the outer wall of the locking block (15). A slide rod (13) is fixedly connected inside the locking block (15). A spring (14) is sleeved on the outer wall of the slide rod (13). A threaded cap (18) is threadedly connected to the outer wall of the locking block (15) through the external thread (16).

5. A fixing device for hardware processing according to claim 4, characterized in that: The outer wall of the slide rod (13) is slidably connected to the inside of the positioning seat (12), and the slide rod (13) is used to limit the movement of the spring (14) and the locking block (15).

6. A fixing device for hardware processing according to claim 4, characterized in that: One end of the spring (14) is fixedly connected to the inside of the card block (15), and the other end of the spring (14) is fixedly connected to the inside of the positioning seat (12).

7. A fixing device for hardware processing according to claim 1, characterized in that: The lower surface of the guide rail (4) is fixedly connected to the inside of the fixed base (1), and the guide rail (4) is used to guide the movement of the sliding seat (3).

8. A fixing device for hardware processing according to claim 1, characterized in that: The threaded rod (5) is rotatably connected inside the fixed base (1), and the internal thread of the sliding seat (3) matches the external thread of the threaded rod (5).

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