A V-block linkage with wedge positioning fixture for cutting section steel
The steel cutting positioning fixture, which uses V-blocks and wedges in linkage, solves the problems of synchronous clamping and self-centering of traditional fixtures, and realizes automatic centering and stable clamping of steel, thereby improving cutting accuracy and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBI TIANHONG STEEL STRUCTURE CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional steel cutting positioning fixtures have the problem that the left and right clamping parts are difficult to clamp synchronously, resulting in poor coordination of movements. This leads to uneven force on the steel during clamping, causing it to tilt and shift. In addition, they lack self-centering function, which affects cutting accuracy and production efficiency.
The fixture design employs a V-block and wedge linkage mechanism. Through the cooperation of cylinders, cams, and return springs, the two V-blocks move synchronously and automatically center. Combined with the wedge slider and support mechanism, it forms a bidirectional clamping mechanism, ensuring uniform clamping force and eliminating the risk of deviation.
It achieves automatic centering and stable clamping of steel profiles, improving cutting accuracy and production efficiency, and avoiding skewing and offset during the clamping process. It is suitable for steel profiles of different specifications and cross-sectional shapes.
Smart Images
Figure CN224373445U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel fixing technology, specifically to a steel cutting and positioning fixture that links a V-shaped block and a wedge. Background Technology
[0002] In modern mechanical manufacturing and construction engineering, structural steel is an important structural material, and the quality of its cutting and processing directly affects the accuracy of subsequent assembly and the stability of the structure. During the cutting process, the structural steel needs to be precisely positioned and reliably clamped to ensure dimensional accuracy and surface quality.
[0003] Most traditional steel section cutting positioning fixtures suffer from the problem of difficulty in achieving synchronous clamping of the left and right clamping parts. Poor coordination between the clamping parts leads to uneven force on the steel section during clamping, causing skewing and offset, which significantly affects cutting accuracy. Furthermore, traditional fixtures lack self-centering functionality, requiring repeated manual adjustments to the centering position when dealing with steel sections of different specifications and cross-sectional shapes. This is not only time-consuming but also prone to positioning deviations due to human error, reducing production efficiency. Therefore, this invention provides a steel section cutting positioning fixture with V-block and wedge linkage, suitable for symmetrical structures such as square and round steel sections. Utility Model Content
[0004] This utility model addresses the shortcomings of existing technologies by providing a steel cutting and positioning fixture that links a V-block with a wedge, thereby solving the problems mentioned in the background section.
[0005] To achieve the above technical objectives, this utility model proposes the following technical solution: a V-shaped block and wedge linkage steel cutting and positioning fixture, comprising a base and clamping components mirror-mounted on the base, a support mechanism between the clamping components, a driving mechanism on one side of any clamping component for driving the two clamping components to move relative to or away from each other, ear plates on both sides of the clamping components, a return spring between the two ear plates on the same side, the driving mechanism comprising a limiting plate, an L-shaped support seat, a cam and a cylinder, a linkage rod at both ends of the limiting plate, one end of the linkage rod passing through one ear plate and the return spring in sequence and connecting to the other ear plate, the cam being rotatably mounted on the support seat between the clamping components and the limiting plate, the cylinder being mounted on one side of the support seat, and the output end of the cylinder being rotatably mounted on the cam.
[0006] Furthermore, the support mechanism includes a portal frame, on which multiple support shafts are slidably mounted, each support shaft is fitted with a support spring, and a support plate is fixedly connected to the top of the multiple support shafts.
[0007] Furthermore, the clamping assembly includes a V-block, a wedge body, and a wedge slider. The wedge body is fixedly disposed at the bottom of the V-block, and the wedge slider is slidably mounted on the inclined surface of the wedge body. The two wedge sliders are connected by a connecting plate, and the ear plates are fixed on both sides of the wedge body.
[0008] Furthermore, the base is provided with a T-shaped groove perpendicular to the relative movement direction of the two V-shaped blocks, the bottom of the inclined wedge slider is set in the T-shaped groove, and the connecting plate is connected to the base by bolts.
[0009] Furthermore, the top of the tray is provided with an arc-shaped groove.
[0010] Furthermore, the V-shaped surface of the V-shaped block is coated with a ceramic coating.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: By using the combined structure of cylinder, cam linkage rod and return spring, the two V-blocks can move synchronously relative to each other and move away, achieving automatic centering without the need for manual adjustment of the centering position. At the same time, it ensures that the two clamping forces are uniform and consistent, avoiding uneven force and skewing or offset during clamping. Through the wedge body and wedge slider, the V-blocks descend synchronously during relative movement, and the V-shaped surface contacts the steel section and applies pressure. Combined with the elastic reaction force of the support mechanism, a two-way clamping is formed, further eliminating the risk of steel section offset and improving the stability of clamping. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a structural schematic diagram from another perspective of the present invention;
[0014] Figure 3 This is a front structural diagram of the present invention.
[0015] In the diagram, 1. Base; 2. Clamping assembly; 3. Ear plate; 4. Return spring; 5. Limiting plate; 6. Support seat; 7. Cam; 8. Cylinder; 9. Linkage rod; 10. V-block; 11. Wedge body; 12. Wedge slider; 13. T-shaped groove; 14. Connecting plate; 15. Gantry frame; 16. Support shaft; 17. Support spring; 18. Support plate; 19. Arc groove. Detailed Implementation
[0016] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0017] This utility model provides a steel cutting and positioning fixture with V-shaped block and wedge linkage, including a base 1 and clamping components 2 mirror-mounted on the base. A support mechanism is provided between the clamping components 2. A driving mechanism is provided on one side of any clamping component 2 to drive the two clamping components 2 to move relative to or away from each other. Ear plates 3 are provided on both sides of the clamping components 2. A return spring 4 is provided between the two ear plates 3 on the same side. The driving mechanism includes a limiting plate 5, an L-shaped support seat 6, a cam 7 and a cylinder 8. Linkage rods 9 are provided at both ends of the limiting plate 5. One end of the linkage rod 9 passes through one ear plate 3 and the return spring 4 in sequence and is connected to the other ear plate 3. The cam 7 is rotatably mounted on the support seat 6 between the clamping components 2 and the limiting plate 5. The cylinder 8 is located on one side of the support seat 6. The output end of the cylinder 8 is rotatably mounted on the cam 7. The mounting end of the cylinder 8 is hinged to the support seat 6.
[0018] like Figure 1 and 2 As shown, the stroke of cylinder 8 is determined according to the size of the steel profile and the spacing between the clamping components 2. The steel profile is placed on the support mechanism between the two clamping components 2. Cylinder 8 retracts, pulling cam 7 to rotate. When cam 7 rotates, the protruding ends at both ends of cam 7 contact the clamping components 2 and the limiting plate 5 respectively. The protruding end at one end of cam 7 pushes the left clamping component 2 to move along the linkage rod 9 towards the right clamping component 2, compressing the return spring 4. The protruding end at the other end of cam 7 pushes the limiting plate 5 to move away from the clamping components 2. Under the action of the moving rod 9, the linkage rod 9 will pull the right clamping component 2 to move towards the left clamping component 2. The return spring 4 will be compressed again. The protruding parts at both ends of the cam 7 will simultaneously push the left clamping component 2 and the limiting plate 5, thereby realizing the synchronous relative movement of the clamping component 2 and the right clamping component 2, and synchronously clamping the steel section. At the same time, it can also correct the centering position and avoid skewing or offset, which greatly improves the cutting accuracy. When it is necessary to release the clamping of the steel section after cutting, the cylinder 8 extends, and under the action of the return spring 4, the two clamping components 2 are reset.
[0019] The support mechanism includes a portal frame 15, on which multiple support shafts 16 are slidably mounted. Each support shaft 16 is fitted with a support spring 17, and a support plate 18 is fixedly connected to the top of the multiple support shafts 16.
[0020] like Figure 3 As shown, after the steel section is placed on the support plate 18, the support shaft 16 moves downward under the action of gravity, and the support spring 17 is compressed. When the steel section is clamped, under the reaction force of the support spring 17, the support spring 17 will press the steel section upward, further improving the clamping stability.
[0021] The clamping assembly 2 includes a V-block 10, a wedge body 11, and a wedge slider 12. The wedge body 11 is fixedly disposed at the bottom of the V-block 10, and the wedge slider 12 is slidably mounted on the inclined surface of the wedge body 11. The two wedge sliders 12 are connected by a connecting plate 14. The gantry frame 15 is fixed on the connecting plate 14, and the ear plates 3 are fixed on both sides of the wedge body 11.
[0022] like Figure 2 and 3 As shown, the wedge body 11 is connected to the wedge slider 12 through a dovetail groove. During the relative movement of the V-block 10, under the action of the wedge body 11 and the wedge slider 12, the V-block 10 will descend during the relative movement. The upper V-shaped surface of the V-block 10 contacts the profile steel. When the V-shaped self-locking block 10 is pressed down, the support spring 17 is compressed and generates an upward reaction force, which forms a clamping force with the pressure of the V-shaped surface. The support spring 17 is compressed again, increasing the reaction force of the support spring 17. It should be noted that when the profile steel is placed on the support plate 18, after the support spring 17 is compressed, the symmetrical point of the profile steel is higher than the symmetrical point of the V-shaped surface, so that the upper part of the V-shaped surface can contact the upper part of the profile steel first.
[0023] The base 1 is provided with a T-shaped groove 13 that is perpendicular to the relative moving direction of the two V-shaped blocks 10. The bottom of the inclined wedge slider 12 is set in the T-shaped groove 13. The connecting plate 14 is detachably connected to the base 1 by bolts.
[0024] like Figure 1 As shown, the T-shaped slide 13 provides linear motion guidance for the wedge slider 12. The T-shaped slide 13 allows the wedge slider 12 to slide in a direction perpendicular to the axis of the steel section, thereby adjusting the position of the positioning fixture according to the position of the cutting device. After the position is adjusted, the connecting plate 14 is fixed by bolts to prevent movement during the cutting process and affect the cutting accuracy.
[0025] The top of the tray 18 is provided with an arc-shaped groove 19.
[0026] like Figure 1 As shown, the arc groove 19 is mainly suitable for steel sections with a circular cross-section to prevent rolling.
[0027] The V-shaped surface of the V-shaped block 10 is coated with a ceramic coating.
[0028] like Figure 1 As shown, a ceramic coating is sprayed onto the V-shaped surface to improve its wear resistance coefficient.
[0029] Operating Principle: Based on the length of the steel profile, this utility model can evenly set multiple positioning clamps within the T-shaped slide groove 13. In use, taking square steel as an example, the square steel is placed on the support plate 18, and the support spring 17 is initially compressed. Then, the cylinder 8 is activated to retract, and the piston rod of the cylinder 8 pulls the cam 7 to rotate. The protruding parts at both ends of the cam 7 synchronously push the left V-block 10 and the limiting plate 5 to move backwards. During the movement of the limiting plate 5, the linkage rod 9 pulls the right V-block 10 to move, thereby achieving relative movement of the two V-blocks 10, while simultaneously resetting the spring. 4. During the compression and relative movement of the two V-blocks 10, the two V-blocks 10 will descend under the action of the wedge body 11 and the wedge slider 12. The V-shaped surface of the V-block 10 will first contact the two corners of the square steel and squeeze the square steel downward, so that the support spring 17 will be compressed again until the V-block 10 clamps the square steel. Under the reaction of the support spring 17, the support plate 18 will press against the square steel to improve the stability of the clamping. After cutting, the clamping of the square steel needs to be released. The cylinder 8 extends and the two V-blocks 10 return to their original positions under the action of the return spring 4.
[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A steel section cutting and positioning fixture with V-shaped block and wedge linkage, characterized in that: The device includes a base (1) and a clamping assembly (2) mirror-mounted on the base. A support mechanism is provided between the clamping assemblies (2). A drive mechanism is provided on one side of any clamping assembly (2) to drive the two clamping assemblies (2) to move relative to or away from each other. Ear plates (3) are provided on both sides of the clamping assembly (2). A return spring (4) is provided between the two ear plates (3) on the same side. The drive mechanism includes a limiting plate (5), an L-shaped support seat (6), a cam (7), and a cylinder (8). Linkage rods (9) are provided at both ends of the limiting plate (5). One end of the linkage rod (9) passes through one ear plate (3) and the return spring (4) in sequence and is connected to the other ear plate (3). The cam (7) is rotatably mounted on the support seat (6) between the clamping assembly (2) and the limiting plate (5). The cylinder (8) is located on one side of the support seat (6). The output end of the cylinder (8) is rotatably mounted on the cam (7).
2. The steel cutting and positioning fixture with V-block and wedge linkage according to claim 1, characterized in that: The support mechanism includes a gantry frame (15), on which multiple support shafts (16) are slidably mounted. Each support shaft (16) is fitted with a support spring (17), and a support plate (18) is fixedly connected to the top of the multiple support shafts (16).
3. The steel cutting and positioning fixture with V-block and wedge linkage according to claim 2, characterized in that: The clamping assembly (2) includes a V-block (10), a wedge body (11) and a wedge slider (12). The wedge body (11) is fixedly disposed at the bottom of the V-block (10), and the wedge slider (12) is slidably mounted on the inclined surface of the wedge body (11). The two wedge sliders (12) are connected by a connecting plate (14), and the ear plate (3) is fixed on both sides of the wedge body (11).
4. The steel cutting and positioning fixture with V-block and wedge linkage according to claim 3, characterized in that: The base (1) is provided with a T-shaped groove (13) perpendicular to the relative movement direction of the two V-shaped blocks (10). The bottom of the inclined wedge slider (12) is set in the T-shaped groove (13). The connecting plate (14) is connected to the base (1) by bolts.
5. A steel cutting and positioning fixture with V-block and wedge linkage according to claim 4, characterized in that: The top of the tray (18) is provided with an arc-shaped groove (19).
6. A steel section cutting and positioning fixture with V-block and wedge linkage according to claim 3, characterized in that: The V-shaped surface of the V-shaped block (10) is sprayed with a ceramic coating.