Stable clamp for high-precision tubular shaft machining

Abstract

The utility model discloses a stable clamp for processing a high-precision tubular shaft, which relates to the technical field of tubular shaft clamps, and is characterized in that a fastening bolt is rotated to abut against a tubular shaft in a tubular clamp cavity, or the fastening bolt is inserted into an open hole of the tubular shaft to fix the tubular shaft; a screw hole is formed in the other end of the protruding pipe, a distance adjusting bolt is inserted into the screw hole, a fixing head is arranged at the outer end of the distance adjusting bolt, an abutting rubber block is arranged at the inner end of the fixing head, and the distance adjusting bolt is rotated to adjust the position of the abutting rubber block and prolong the length of the clamping line. The tip end of the fastening bolt can tightly abut against the surface of the pipe shaft or be inserted into a preset open hole, firm locking is achieved, and loosening is prevented. The design of the distance adjusting bolt allows fine adjustment of the length of the clamping line, and the clamping tightness degree and uniformity are improved. And through the design of the fixing head and the arc-shaped rubber block, the clamping tightness is guaranteed, and damage to the pipe shaft is avoided. The protruding pipes arranged in a triangular mode enhance the overall structural strength of the clamp, evenly disperse pressure and prevent a pipe shaft from deviating or deforming.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe shaft clamps, in particular to a stable clamp for processing high-precision pipe shafts. Background Art

[0002] A pipe and shaft fixture is a device used to secure and position tubular or shaft-shaped workpieces during machining. It typically features adjustable clamping force to ensure the workpiece remains stable during machining. This fixture design allows for quick installation and removal of workpieces, thereby improving production efficiency. Pipe and shaft fixtures are widely used in lathes, grinders, drilling machines, and other machine tools, suitable for machining pipes and shafts of various diameters.

[0003] In today's industrial manufacturing, pipe shafts are critical components, and their clamping performance is directly related to production efficiency and product quality. However, current pipe shaft clamps face a significant challenge when handling smooth pipe shafts: even with carefully designed rubber strips inside the clamp to increase friction, the extremely smooth surface of the pipe shaft still makes it difficult to maintain a stable clamp during clamping, resulting in frequent slippage and seriously affecting the clamping effect. Utility Model Content

[0004] The purpose of the present invention is to provide a stable fixture for machining high-precision and tip shafts, so as to solve the problems raised in the above-mentioned background technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A stable fixture for machining high-precision pipe shafts, comprising a top frame, a clamping frame, an inner movable frame, a connecting piece, and a pipe clamp cavity. The top frame is connected to a first clamping frame and a second clamping frame at both ends via a first connecting piece, and the inner movable frame is installed between the first clamping frame and the second clamping frame via a second connecting piece. A pipe clamp cavity for clamping the pipe shaft is formed between the inner movable frame, the first clamping frame, and the second clamping frame.

[0007] The first clamping frame, the second clamping frame and the inner movable frame are provided with a protruding tube inside, and a fastening bolt is connected to the side wall of one end of the protruding tube, and the fastening bolt is rotated to press against the pipe axis in the pipe clamp cavity, or the fastening bolt is inserted into the opening of the pipe axis to achieve its fixation;

[0008] A screw hole is provided at the other end of the protruding tube, and a distance adjusting bolt is inserted into the screw hole. The outer end of the distance adjusting bolt is provided with a fixed head, and the inner end of the fixed head is provided with a tightening rubber block. The distance adjusting bolt is rotated to adjust the position of the tightening rubber block and extend the length of the clamping line.

[0009] According to a preferred embodiment of the present invention, a socket is provided on the side wall of the fixing head, and a connecting rod adapted to the socket is provided at the inner end of the pressing rubber block. The pressing rubber block and the connecting rod are fixed by hot melt, and the connecting rod is connected to the fixing head by a thread.

[0010] According to a preferred embodiment of the present invention, the protruding tube and the fastening bolt are perpendicular to each other, and a non-slip gasket is provided on the fastening bolt. The inner end surface of the protruding tube is a flat surface, and the protruding tube is fixed by welding to the first clamping frame, the second clamping frame and the inner movable frame connected thereto.

[0011] In a preferred embodiment of the present invention, the distance adjusting bolt and the fixing head are fixed by welding, and the inner end surface of the fixing head is a flat surface.

[0012] In a preferred embodiment of the present invention, the abutting rubber block is bonded to the fixing head by an adhesive, and the inner end surface of the abutting rubber block is designed to be arc-shaped, and the arc-shaped surface fits the tube axis in the tube clamp cavity.

[0013] According to a preferred embodiment of the present invention, the protruding tubes on the first clamping frame, the second clamping frame and the inner movable frame are designed to be triangular, and the triangular protruding tubes are used to support the pipe axis and form a clamping line with the pipe axis.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The design of the tightening bolt's tip, a seemingly simple detail, actually embodies profound engineering wisdom. Its unique shape not only conforms closely to the surface of the tube shaft, but also, through precise calculation and machining, ensures that every inch of contact achieves optimal tightening, even on complex or irregular surfaces. When the bolt is tightened, this design effectively reduces play, preventing vibration or displacement caused by loosening, thereby ensuring a secure lock between the clamp and the tube shaft.

[0016] The introduction of the adjustable distance bolt further enhances the design's flexibility and user-friendly design. In practice, due to the diverse sizes and shapes of pipe shafts, the clamp requires a certain degree of adjustability to accommodate varying clamping requirements. The adjustable distance bolt was designed with this in mind, allowing the operator to fine-tune the clamping line length within a certain range, ensuring optimal clamping tightness and uniformity. This design not only enhances the clamp's versatility but also makes the clamping process more convenient and efficient.

[0017] The combined design of the fixed head and curved rubber block takes into account both tight clamping and protective properties. As the clamp's key load-bearing component, the fixed head must be structurally robust enough to withstand the pressure from the pipe shaft. The curved rubber block, with its excellent elasticity and wear resistance, provides a soft protective layer for the pipe shaft. When the clamp clamps the pipe shaft, the curved rubber block evenly distributes pressure and absorbs impact energy, preventing damage to the pipe shaft. This design not only ensures tight clamping but also provides protection for the pipe shaft.

[0018] The triangular arrangement of the protruding tubes further enhances the overall structural strength of the clamp. As one of the most stable shapes in nature, the triangle is often used in engineering design to provide strong support. The protruding tube design not only enhances the clamp's rigidity but also evenly distributes pressure throughout the entire structure, preventing the pipe axis from shifting or deforming during the clamping process. This design not only improves clamping accuracy but also ensures safety and stability during the machining process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a diagram showing the overall structure of the utility model;

[0021] Figure 2 This is a front view of the overall structure of the utility model;

[0022] Figure 3 This is a side view of the overall structure of the utility model;

[0023] Figure 4 This is a diagram showing the protruding tube, fastening bolts, distance-adjusting bolts and tightening rubber blocks of the utility model.

[0024] In the figure: 1. Top frame; 2. First clamping frame; 3. Second clamping frame; 4. Inner movable frame; 5. First connecting piece; 6. Second connecting piece; 7. Tube clamp cavity; 8. Protruding tube; 10. Fastening bolt; 11. Screw hole; 12. Adjusting bolt; 13. Fixed head; 14. Socket; 15. Tightening rubber block; 16. Connecting rod. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solution of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention. Example

[0026] like Figures 1 to 4 As shown, the core design of this fixture includes a top frame 1, a pair of clamping frames (first clamping frame 2 and second clamping frame 3), an inner movable frame 4, and a sophisticated connector system. Together, they create an efficient and stable pipe clamping environment—the pipe clamping chamber 7. This design cleverly combines mechanical structure with mechanical principles to achieve multi-dimensional, high-precision fixation of the pipe shaft.

[0027] Each clamping frame and inner movable frame 4 is cleverly designed with protruding tubes 8. These tubes 8 not only serve as support structures but also play a key role in transmitting the clamping force. A fastening bolt 10 is mounted on one side of the protruding tube 8. When the bolt is rotated, its tip rests firmly against the surface of the pipe shaft or inserts into a pre-set opening on the shaft, securing the clamp. Notably, the fastening bolt 10 is also fitted with a non-slip gasket. This detailed design effectively prevents loosening due to vibration during processing, ensuring stable and reliable clamping.

[0028] The other end of the protruding tube 8 is provided with a screw hole 11 for installing a spacing bolt 12. This design allows the operator to fine-tune the position of the abutting rubber block 15 by rotating the spacing bolt 12, thereby extending the length of the clamping line. The clamping line, i.e., the line of tangency between the tube axis and the protruding tube 8, has a direct impact on the tightness and uniformity of the clamping. The design of the fixed head 13 further enhances the stability of the spacing bolt 12. The abutting rubber block 15 at its inner end adopts a curved design that perfectly fits the surface of the tube axis, ensuring a tight clamping while avoiding damage to the tube axis.

[0029] Particularly noteworthy is the triangular arrangement of the protruding tubes 8 on the first clamping frame 2, the second clamping frame 3, and the inner movable frame 4. This design not only enhances the overall structural strength of the clamp but also leverages the stability principle of the triangle to ensure even pressure distribution during the clamping process, effectively preventing the tube axis from shifting or deforming. Example

[0030] Compared with the first embodiment, the second embodiment further optimizes and innovates on the basis of retaining the original design essence. Among them, the most significant change is the design of the socket 14 added to the side wall of the fixed head 13 and the matching connecting rod 16.

[0031] The provision of socket 14 provides a more stable connection for the abutting rubber block 15. A connecting rod 16 is provided at the inner end of the abutting rubber block 15, which mates with the socket 14. The two are fixed together by heat fusion, ensuring a secure connection. Connecting rod 16 is tightly connected to the fixing head 13 via threads. This design not only simplifies installation but also facilitates disassembly and maintenance.

[0032] In addition, the second embodiment optimizes the material selection and processing of the anti-slip gasket and fastening bolt 10, striving to achieve the best results in every detail. For example, the anti-slip gasket is made of a special material with a high friction coefficient, which can maintain a stable clamping force even under high-speed rotation and high-load conditions; the fastening bolt 10 is precisely processed to ensure smooth rotation and resistance to damage.

[0033] In summary, this stable fixture for high-precision tubular shaft machining achieves efficient and stable clamping of tubular shafts through ingenious design and sophisticated craftsmanship. It stands out in the industry in terms of structural strength, clamping accuracy, and ease of operation. With continuous technological advancements and sustained market demand, we believe this fixture will play an even more important role in the future of high-precision tubular shaft machining.

[0034] Instructions: First, precisely place the tubular shaft into the clamp cavity 7. This seemingly simple step actually requires a high degree of concentration and precision. The design of the clamp cavity must fully consider the dimensional tolerances and material properties of the tubular shaft to ensure a secure and damage-free fit. Experimental data shows that maintaining a clearance of less than 0.05mm between the tubular shaft and the clamp cavity 7 effectively reduces vibration-induced wear and noise, improving overall equipment efficiency.

[0035] Next, tighten the bolt 10, securing the entire system with a secure lock. The tip of the bolt must be precisely aligned with the pipe surface or inserted into the pre-set opening. This process requires careful operation, as even the slightest deviation can compromise the secure locking. In practical applications, we recommend using fastening bolts 10 made of high-strength alloy steel, which offers superior fatigue resistance and wear resistance compared to standard materials, effectively extending the life of the equipment.

[0036] To achieve more precise adjustments, we need to fine-tune the position of the rubber block 15 by rotating the distance adjustment bolt 12. This step not only affects the tightness of the clamping, but also directly affects the uniformity of the clamping. As a buffer element, the material selection and processing precision of the rubber block are crucial. High-quality, highly elastic rubber materials can ensure good resilience and sealing during long-term use, reducing damage to the pipe shaft caused by uneven pressure. At the same time, through precise processing technology, the flatness and dimensional accuracy of the rubber block surface are ensured to achieve the best clamping effect.

[0037] The ingenuity of this design is readily apparent when we examine the triangular arrangement of the protruding tubes 8 on the first clamping frame 2, the second clamping frame 3, and the inner movable frame 4. As one of the most stable structural forms, this triangular arrangement evenly distributes pressure and effectively prevents displacement or deformation of the tube axis during the clamping process. This design not only demonstrates the engineers' profound understanding of mechanical principles but also demonstrates their unwavering commitment to safe equipment operation.

[0038] In Example 2, we see a further refinement of this design concept. By adding a socket 14 and a connecting rod 16, not only is the position of the rubber block 15 further stabilized, but it also greatly improves the ease of disassembly and maintenance. This innovative design eliminates the need to disassemble the entire clamping device when replacing the rubber block or performing routine maintenance, significantly saving time and cost.

[0039] Finally, we must emphasize the importance of the material and processing of the anti-slip gasket and fastening bolt 10. As a key component for preventing the pipe shaft from slipping, the anti-slip gasket must be made of a material with a good friction coefficient and wear resistance. The processing of the fastening bolt 10 directly affects its locking force and service life. Therefore, strict control is required when selecting these key components to ensure optimal quality and performance, thereby maintaining stable clamping force and smooth rotation.

[0040] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A stable fixture for processing high-precision pipe shafts, comprising a top frame (1), a clamping frame, an inner movable frame (4), a connecting piece and a pipe clamp cavity (7), wherein both ends of the top frame (1) are respectively connected to a first clamping frame (2) and a second clamping frame (3) via a first connecting piece (5), the inner movable frame (4) is installed between the first clamping frame (2) and the second clamping frame (3) via a second connecting piece (6), and a pipe clamp cavity (7) for clamping the pipe shaft is formed between the inner movable frame (4), the first clamping frame (2) and the second clamping frame (3); characterized in that, The first clamping frame (2), the second clamping frame (3) and the inner movable frame (4) are provided with a protruding tube (8) inside, and a fastening bolt (10) is connected to the side wall of one end of the protruding tube (8), and the fastening bolt (10) is rotated to press against the tube axis in the tube clamp cavity (7), or the fastening bolt (10) is inserted into the opening of the tube axis to achieve its fixation; The other end of the protruding tube (8) is provided with a screw hole (11), and a distance adjusting bolt (12) is inserted into the screw hole (11). The outer end of the distance adjusting bolt (12) is provided with a fixed head (13), and the inner end of the fixed head (13) is provided with a tightening rubber block (15). The distance adjusting bolt (12) is rotated to adjust the position of the tightening rubber block (15) and extend the length of the clamping line.

2. A stabilizing fixture for high-precision shaft machining according to claim 1, characterized in that: The side wall of the fixed head (13) is provided with a socket (14), and the inner end of the pressing rubber block (15) is provided with a connecting rod (16) adapted to the socket (14). The pressing rubber block (15) and the connecting rod (16) are fixed by hot melt, and the connecting rod (16) is connected to the fixed head (13) through a thread.

3. A stabilizing fixture for high-precision shaft machining according to claim 1 or 2, characterized in that: The protruding tube (8) and the fastening bolt (10) are perpendicular to each other, and a non-slip gasket is provided on the fastening bolt (10). The inner end surface of the protruding tube (8) is a flat surface. The protruding tube (8) is welded and fixed to the first clamping frame (2), the second clamping frame (3), and the inner movable frame (4) connected thereto.

4. A stabilizing fixture for high-precision shaft machining according to claim 3, characterized in that: The distance adjusting bolt (12) and the fixed head (13) are welded and fixed, and the inner end surface of the fixed head (13) is a flat surface.

5. The stabilizing fixture for high-precision shaft machining according to claim 4, characterized in that: The abutting rubber block (15) is bonded to the fixed head (13) by an adhesive, and the inner end surface of the abutting rubber block (15) is designed to be arc-shaped, and the arc-shaped surface fits the tube axis in the tube clamp cavity (7).

6. A stabilizing fixture for high-precision shaft machining according to claim 5, characterized in that: The protruding tubes (8) on the first clamping frame (2), the second clamping frame (3) and the inner movable frame (4) are designed to be triangular, and the triangular protruding tubes (8) are used to press against the tube axis and form a clamping line with the tube axis.

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