Adjustable jaw bench vice

Abstract

The application discloses a bench clamp with adjustable jaw, which comprises a fixed jaw body and a movable jaw body. The fixed jaw body is provided with a jaw body driving device, which is connected with the movable jaw body. The movable jaw body can be driven by the jaw body driving device to move close to or away from the fixed jaw body. The fixed jaw body is rotatably provided with a first claw and a second claw. The second claw can move close to or away from the first claw. The second claw is provided with a second claw fixing member. The movable jaw body is rotatably provided with a third claw and a fourth claw. The fourth claw can move close to or away from the third claw. The fourth claw is provided with a fourth claw fixing member. The first claw, the second claw, the third claw and the fourth claw rotate and relatively move to clamp a workpiece. The size and shape of the jaw formed by the claws can be adjusted in the application. Therefore, the application can be applied to clamping and fixing workpieces with different shapes, and the universality of the application is improved.

Description

Technical Field

[0001] This invention relates to an adjustable jaw bench vise, belonging to the field of mechanical tooling and fixtures. Background Technology

[0002] A bench vise is a fixture used on planers, milling machines, drilling machines, and slotting machines. It is fixed to the machine tool's worktable during use to clamp workpieces for cutting operations, serving to fix, clamp, and position the workpiece during machining. Existing bench vises, such as those disclosed in Chinese Utility Model Patent No. CN220533569U, include a base with a clamping block at its upper end for holding the workpiece. A lead screw is connected to the base to push the clamping block. The clamping block includes a push plate connected to the base, a clamping plate connected to one side of the push plate, and multiple clamping rods on the clamping plate. The clamping rods slide against the clamping plate, and positioning bolts are provided at the upper end of the clamping plate to fix the clamping rods. With this type of bench vise, the distance between the clamping rods on the same clamping block is not adjustable, and the angle between the clamping rods and the clamping block is also not adjustable. Therefore, the size and shape of its jaws cannot be adjusted according to the actual size and shape of the workpiece being clamped, resulting in poor versatility. Summary of the Invention

[0003] The purpose of this invention is to provide an adjustable jaw bench vise, which solves the technical defect of existing bench vises that have poor versatility due to the non-adjustable jaw shape.

[0004] To solve the above problems, the technical solution adopted by the present invention is: an adjustable jaw bench vise, including a fixed jaw and a movable jaw, the fixed jaw and the movable jaw are arranged parallel to each other and connected by a connector perpendicular to both, the fixed jaw is provided with a jaw driving device, which is connected to the movable jaw, the fixed jaw is fixed to a fixed object in use, the movable jaw can be driven by the jaw driving device to move closer to or away from the fixed jaw, the fixed jaw is rotatably provided with a first jaw and a second jaw, the second jaw can move closer to or away from the first jaw, and a second jaw fixing member is provided on the second jaw, the movable jaw is rotatably provided with a third jaw and a fourth jaw, the fourth jaw can move closer to or away from the third jaw, and a fourth jaw fixing member is provided on the fourth jaw, the first jaw, the second jaw, the third jaw and the fourth jaw rotate and move relative to each other to clamp the workpiece to be clamped. The adjustable distance between the movable and fixed jaws in this invention allows for adjustable distances between the first and second jaws and the third and fourth jaws. Furthermore, the adjustable distances between the first and second jaws, the third and fourth jaws, and the rotatable jaws ensure that the jaws formed by the first, second, third, and fourth jaws are not only adjustable in size but also in shape. Therefore, this invention is applicable to clamping workpieces of different shapes, thus improving its versatility.

[0005] As a further improvement of the present invention, the connecting member includes two parallel guide rods. One end of each guide rod is fixedly connected to the fixed clamp body near both ends. A guide hole corresponding to each guide rod is provided near both ends of the movable clamp body. The two guide rods pass through the two guide holes respectively. The movable clamp body moves along the length of the guide rods under the drive of the clamp body driving device. The present invention provides guide rods to guide the movement of the movable clamp body.

[0006] As a further improvement of the present invention, the clamp driving device is a main lead screw, one end of which is a smooth section that passes through the fixed clamp body and is rotatably connected to it. The threaded section of the main lead screw passes through the movable clamp body and is threadedly engaged with it. Rotating the main lead screw is used to pull or push the movable clamp body toward or away from the fixed clamp body. The present invention converts the rotation of the main lead screw into the linear motion of the movable clamp body, thereby driving the movable clamp body to move toward or away from the fixed clamp body.

[0007] As a further improvement of the present invention, a handwheel is provided at the end of the main lead screw for rotating the main lead screw in use. The handwheel in this invention facilitates rotation of the main lead screw in use, thereby facilitating adjustment of the position of the movable clamp body.

[0008] As a further improvement of the present invention, a first linear guide rail and a second linear guide rail are respectively provided on the top of the fixed clamp body and the movable clamp body. A first slider and a second slider are slidably mounted on the first linear guide rail, and a third slider and a fourth slider are slidably mounted on the second linear guide rail. A first pawl, a second pawl, a third pawl, and a fourth pawl are rotatably mounted on the first slider, the second slider, the third slider, and the fourth slider, respectively. A second pawl fixing member is provided on the second slider, and a fourth pawl fixing member is provided on the fourth slider. A first pawl fixing member is provided at the end of the fixed clamp body away from the second pawl, which is used to abut against the first slider to prevent the first pawl from moving away from the second pawl in use. A third pawl fixing member is provided at the end of the movable clamp body away from the fourth pawl, which is used to abut against the third slider to prevent the third pawl from moving away from the fourth pawl in use. The present invention facilitates the movement of the first pawl, the second pawl, the third pawl, and the fourth pawl through the cooperation of the linear guide rails and the sliders, while the sliders also facilitate the rotational installation of the first pawl, the second pawl, the third pawl, and the fourth pawl.

[0009] As a further improvement of the present invention, the second claw fixing member is a second hand-tightened screw A, which passes through the second slider and is threadedly engaged with it. The end of the second hand-tightened screw A abuts against the first linear guide rail to prevent the second slider from moving on the first linear guide rail. The fourth claw fixing member is a fourth hand-tightened screw A, which passes through the fourth slider and is threadedly engaged with it. The end of the fourth hand-tightened screw A abuts against the second linear guide rail to prevent the fourth slider from moving on the second linear guide rail. The present invention uses a hand-tightened screw as the claw fixing member, which facilitates the fixing and loosening of the second and fourth claws in use.

[0010] As a further improvement of the present invention, a first fixing block is fixed to the end of the first linear guide rail away from the second slider. The first claw fixing member is a first hand-tightening screw A, which passes through the first fixing block and is threadedly engaged with it. The end of the first hand-tightening screw A abuts against the first slider to prevent it from sliding away from the second slider. A third fixing block is fixed to the end of the second linear guide rail away from the fourth slider. The third claw fixing member is a third hand-tightening screw A, which passes through the second fixing block and is threadedly engaged with it. The end of the third hand-tightening screw A abuts against the third slider to prevent it from sliding away from the fourth slider. The present invention limits the first slider by setting the engagement of the first fixing block and the first hand-tightening screw A, preventing it from moving away from the second slider during use. Similarly, the threaded engagement of the second fixing block and the third hand-tightening screw A limits the third slider, preventing it from moving away from the fourth slider during use. Combined with the fixing of the second and fourth sliders, the workpiece to be clamped is clamped and fixed.

[0011] As a further improvement of the present invention, one end of the first chuck is rotatably connected to the first slider via a vertical first rotating shaft, and a first hand-tightening screw B with a threaded engagement is provided on the first chuck. Tightening the first hand-tightening screw B causes it to abut against the first slider, preventing the first chuck from rotating relative to the first slider. One end of the second chuck is rotatably connected to the second slider via a vertical second rotating shaft, and a second hand-tightening screw B with a threaded engagement is provided on the second chuck. Tightening the second hand-tightening screw B causes it to abut against the second slider, preventing the second chuck from rotating relative to the second slider. One end of the third chuck is rotatably connected to the third slider via a vertical third rotating shaft, and a third hand-tightening screw B with a threaded engagement is provided on the third chuck. Tightening the third hand-tightening screw B causes it to abut against the third slider, preventing the third chuck from rotating relative to the third slider. One end of the fourth chuck is rotatably connected to the fourth slider via a vertical fourth rotating shaft, and a fourth hand-tightening screw B with a threaded engagement is provided on the fourth chuck. Tightening the fourth hand-tightening screw B causes it to abut against the fourth slider, preventing the fourth chuck from rotating relative to the fourth slider. This invention uses a rotating shaft to rotatably connect the chuck and the slider. By hand-tightening screw B, the chuck is fixed to the slider during use, preventing the clamped workpiece from loosening due to the relative rotation between the chuck and the slider during use.

[0012] As a further improvement of the present invention, L-shaped first, second, third, and fourth limiting blocks are respectively fixed on the first, second, third, and fourth sliders. The openings of the first and second limiting blocks face each other and are both directed towards the movable clamp body, while the openings of the third and fourth limiting blocks face each other and are both directed towards the fixed clamp body. The first, second, third, and fourth limiting blocks ensure that the rotation angle range of the first, second, third, and fourth jaws is 90 degrees. By setting the limiting blocks, the present invention limits the rotation range of the jaws, making it more convenient to adjust the jaws during use.

[0013] As a further improvement of the present invention, the first, second, third, and fourth jaws are provided with anti-slip textures at the ends used to hold the workpiece in use. By providing anti-slip textures on the jaws, the present invention provides a more secure clamping of the workpiece in use.

[0014] In summary, the beneficial effects of the present invention are as follows: the size and shape of the jaws formed by the jaws in the present invention can be adjusted, so the present invention can be applied to the clamping and fixing of workpieces of different shapes, thus improving the versatility of the present invention. The main clamping force of the present invention for clamping the workpiece comes from the main screw pulling the movable jaw towards the fixed jaw. When clamping workpieces such as convex-shaped workpieces and clamping cubic workpieces from four sides, the first jaw fixing component and the third jaw fixing component provide clamping force in the direction perpendicular to the main screw, making the clamping of the workpiece more secure. Attached Figure Description

[0015] Figure 1 This is a top view of the present invention.

[0016] Figure 2 This is the left view of the present invention.

[0017] Figure 3 This is a three-dimensional structural view of the present invention.

[0018] Figure 4 This is a top view of the triangular workpiece clamping method of the present invention.

[0019] Figure 5 This is a top view of the present invention for clamping a convex-shaped workpiece.

[0020] Figure 6 This is a top view of the present invention for clamping cylindrical workpieces.

[0021] Figure 7 This is a top view of the present invention for clamping a cuboid workpiece.

[0022] Figure 8 This is a top view of the present invention, showing how a cube-shaped workpiece is clamped from both sides.

[0023] Figure 9 This is a top view of the present invention, showing how a cube-shaped workpiece is clamped from four sides.

[0024] The components are: 1. Fixed clamp body; 2. Movable clamp body; 3. First jaw; 4. Second jaw; 5. Third jaw; 6. Fourth jaw; 7. Fourth jaw fixing component; 8. Second jaw fixing component; 9. Guide rod; 10. Main lead screw; 11. Handwheel; 12. First linear guide rail; 13. Second linear guide rail; 14. First slider; 15. Second slider; 16. Third slider; 17. Fourth slider; 18. First fixing block; 19. First jaw. 20. Fixing component; 21. Second fixing block; 22. Third claw fixing component; 23. First rotating shaft; 24. First hand-tightening screw B; 25. Second rotating shaft; 26. Third rotating shaft; 27. Third hand-tightening screw B; 28. Fourth rotating shaft; 29. ​​Fourth hand-tightening screw B; 30. First limiting block; 31. Second limiting block; 32. Third limiting block; 33. Fourth limiting block; 34. Linear bearing; 35. Lead screw nut. Detailed Implementation

[0025] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 3The adjustable jaw bench vise shown includes a fixed jaw 1 and a movable jaw 2. Both the fixed jaw 1 and the movable jaw 2 have rectangular cross-sections, and their lengths are equal. The fixed jaw 1 and the movable jaw 2 are arranged parallel to each other and connected by a connector perpendicular to both. A jaw drive device is provided on the fixed jaw 1 and connected to the movable jaw 2. In use, the fixed jaw 1 is detachably bolted to the machine tool's worktable. The movable jaw 2 rests on the machine tool's worktable and is not fixed to it, but supported only by the worktable surface. The movable jaw 2 can be driven by the jaw drive device to move closer to or away from the fixed jaw 1. The invention includes a first jaw 3 and a second jaw 4 rotatably mounted on the fixed jaw 1, wherein the second jaw 4 can move closer to or away from the first jaw 3, thereby adjusting the jaws of the first jaw 3 and the third jaw 4. The distance between the jaws 4 is adapted to clamp workpieces of different sizes. The invention includes a second jaw fixing member 8 on the second jaw 4, which fixes the second jaw 4 to the fixed clamp body 1 during use, preventing the second jaw 4 from moving. A third jaw 5 and a fourth jaw 6 are rotatably mounted on the movable clamp body 2. The fourth jaw 6 can move closer to or further away from the third jaw 5 to adjust the distance between them. The invention includes a fourth jaw fixing member 7 on the fourth jaw 6 to fix it during use and prevent movement. The rotation and relative movement of the first jaw 3, second jaw 4, third jaw 5, and fourth jaw 6 are used to clamp the workpiece to be clamped. The movable clamp body 2 moves relative to the fixed clamp body 1, adjusting the distance between them, allowing the invention to clamp workpieces of different sizes.

[0027] The connector in this invention includes two parallel guide rods 9. One end of the guide rod 9 is fixedly connected to the fixed clamp body 1 near both ends. A guide hole corresponding to the guide rod 9 is opened on the movable clamp body 2 near both ends. A linear bearing 34 is installed in each of the two guide holes. The two guide rods 9 pass through the linear bearings in the two guide holes respectively, so that the movable clamp body 2 can move relative to the guide rods 9. The movable clamp body 2 moves along the length direction of the guide rods 9 under the drive of the clamp body driving device. The movement of the movable clamp body 2 is guided by the guide rods 9.

[0028] The clamp driving device in this invention is a main lead screw 10. One end of the main lead screw 10 is a smooth section that passes through the fixed clamp body 1 and is rotatably connected to the fixed clamp body 1 via a bearing seat with an internal bearing. This allows the main lead screw 10 to rotate only relative to the fixed clamp body 1, but not to move axially relative to the fixed clamp body 1. The threaded section of the main lead screw 10 passes through the movable clamp body 2 and is threadedly engaged with it. A lead screw nut 35 is fixedly installed on the movable clamp body 2, and the main lead screw 10 is threadedly engaged with the lead screw nut 35. Rotating the main lead screw 10 is used to pull or push the movable clamp body 2 toward or away from the fixed clamp body 1. To facilitate rotation of the main lead screw 10 during use, a handwheel 11 is provided at the end of the main lead screw 10. The handwheel 11 is used to rotate the main lead screw 10 during use and is installed on the end of the main lead screw 10 near the fixed clamp body 1.

[0029] The present invention comprises a first linear guide rail 12 and a second linear guide rail 13 respectively provided on the top of the fixed clamp body 1 and the movable clamp body 2. The longitudinal section of the first linear guide rail 12 and the second linear guide rail 13 is U-shaped. A first slider 14 and a second slider 15 are slidably mounted on the first linear guide rail 12, and a third slider 16 and a fourth slider 17 are slidably mounted on the second linear guide rail 13. A first chuck 3, a second chuck 4, a third chuck 5, and a fourth chuck 6 are rotatably mounted on the first slider 14, the second slider 15, the third slider 16, and the fourth slider 17, respectively. The jaw fixing member 8 is disposed on the second slider 15, and the fourth jaw fixing member 7 is disposed on the fourth slider 17. The present invention provides a first jaw fixing member 19 at one end of the fixed clamp body 1 away from the second jaw 4. The first jaw fixing member 19 is used to abut against the first slider 14 in the use state to prevent the first jaw 3 from moving away from the second jaw 4. A third jaw fixing member 21 is disposed at one end of the movable clamp body 2 away from the fourth jaw 6. The third jaw fixing member 21 is used to abut against the third slider 16 in the use state to prevent the third jaw 5 from moving away from the fourth jaw 6.

[0030] In this invention, the second claw fixing member 8 is a second hand-tightening screw A, which passes through the second slider 15 and is threadedly engaged with the second slider 15. The end of the second hand-tightening screw A abuts against the first linear guide rail 12 to prevent the second slider 15 from moving on the first linear guide rail 12. The fourth claw fixing member 7 is a fourth hand-tightening screw A, which passes through the fourth slider 17 and is threadedly engaged with the fourth slider 17. The end of the fourth hand-tightening screw A abuts against the second linear guide rail 13 to prevent the fourth slider 17 from moving on the second linear guide rail 13.

[0031] In this invention, a first fixing block 18 is fixed to one end of the first linear guide rail 12 away from the second slider 15. The first claw fixing member 19 in this invention is a first hand-tightening screw A, which passes through the first fixing block 18 and is threadedly engaged with the first fixing block 18. The end of the first hand-tightening screw A abuts against the first slider 14 to prevent the first slider 14 from sliding away from the second slider 15. In this invention, a second fixing block 20 is fixed to one end of the second linear guide rail 13 away from the fourth slider 17. The third claw fixing member 21 is a third hand-tightening screw A, which passes through the second fixing block 20 and is threadedly engaged with the second fixing block 20. The end of the third hand-tightening screw A abuts against the third slider 16 to prevent the third slider 16 from sliding away from the fourth slider 17.

[0032] In this invention, one end of the first chuck 3 is rotatably connected to the first slider 14 via a vertical first rotating shaft 22. A first hand-tightening screw B23 with a threaded engagement is provided on the first chuck 3. Tightening the first hand-tightening screw B23 causes it to press against the first slider 14, preventing the first chuck 3 from rotating relative to the first slider 14. Reversing the rotation of the first hand-tightening screw B23 separates it from the first slider 14, allowing the first chuck 3 to rotate. The first rotating shaft 22 in this invention can be an internal hex bolt. One end of the second chuck 4 is rotatably connected to the second slider 15 via a vertical second rotating shaft 24. A second hand-tightening screw B25 with a threaded engagement is provided on the second chuck 4. Tightening the second hand-tightening screw B25 causes it to press against the second slider 15, preventing rotation. The second pawl 4 rotates relative to the second slider 15; one end of the third pawl 5 is rotatably connected to the third slider 16 via a vertical third rotating shaft 26, and a third hand-tightening screw B27 with a threaded engagement is provided on the third pawl 5. Tightening the third hand-tightening screw B27 causes it to abut against the third slider 16, preventing the third pawl 5 from rotating relative to the third slider 16; one end of the fourth pawl 6 is rotatably connected to the fourth slider 17 via a vertical fourth rotating shaft 28, and a fourth hand-tightening screw B29 with a threaded engagement is provided on the fourth pawl 6. Tightening the fourth hand-tightening screw B29 causes it to abut against the fourth slider 17, preventing the fourth pawl 6 from rotating relative to the fourth slider 17. In this invention, the installation structures of the second pawl 4, the third pawl 5, and the fourth pawl 6 are all the same as the installation structure of the first pawl 3.

[0033] In this invention, L-shaped first limiting blocks 30, second limiting blocks 31, third limiting blocks 32, and fourth limiting blocks 33 are respectively fixed on the first slider 14, the second slider 15, the third slider 16, and the fourth slider 17. The openings of the first limiting blocks 30 and the second limiting blocks 31 are arranged facing each other and both face the movable clamp body 2. The openings of the third limiting blocks 32 and the fourth limiting blocks 33 are arranged facing each other and both face the fixed clamp body 1. The first limiting blocks 30, the second limiting blocks 31, the third limiting blocks 32, and the fourth limiting blocks 33 enable the first jaw 3, the second jaw 4, the third jaw 5, and the fourth jaw 6 to rotate within a range of 90 degrees. In this invention, the first jaw 3, the second jaw 4, the third jaw 5, and the fourth jaw 6 are provided with anti-slip textures at the end used to abut against the workpiece to be clamped in the use state.

[0034] This invention adjusts the distance between the first and second jaws 3 and 4 and the third and fourth jaws 5 and 6 by the relative movement of the fixed jaw 1 and the movable jaw 2. Combined with the adjustment of the distances between the first and second jaws 3 and 4, the third and fourth jaws 5 and 6, and the angles of the first, second, third, and fourth jaws 6, this invention is applicable to clamping and fixing workpieces of different shapes and sizes. Figures 4 to 9 Schematic diagrams showing the clamping of triangular workpieces (with the first chuck 3 removable), convex-shaped workpieces, cylindrical workpieces, cuboid workpieces, cubic workpieces clamped from two sides, and cubic workpieces clamped from four sides.

[0035] Unless otherwise specified in the above description, all parts are prior art, or can be implemented using existing technology. Furthermore, the specific embodiments described in this invention are merely preferred embodiments and are not intended to limit the scope of this invention. That is, all equivalent changes and modifications made within the scope of this invention should be considered within the technical scope of this invention.

Claims

1. An adjustable jaw bench vise, characterized in that: It includes a fixed clamp body (1) and a movable clamp body (2). The fixed clamp body (1) and the movable clamp body (2) are arranged parallel to each other and connected by a connector perpendicular to both. The fixed clamp body (1) is provided with a clamp body driving device, which is connected to the movable clamp body (2). The fixed clamp body (1) is fixed to a fixed object in the use state. The movable clamp body (2) can be driven by the clamp body driving device to move closer to or away from the fixed clamp body (1). The fixed clamp body (1) is rotatably provided with a first chuck (3) and a second chuck (4). The jaw (4) can move closer to or further away from the first jaw (3), and a second jaw fixing member (8) is provided on the second jaw (4). A third jaw (5) and a fourth jaw (6) are rotatably provided on the movable clamp body (2). The fourth jaw (6) can move closer to or further away from the third jaw (5), and a fourth jaw fixing member (7) is provided on the fourth jaw (6). The first jaw (3), the second jaw (4), the third jaw (5) and the fourth jaw (6) rotate and move relative to each other to clamp the workpiece to be clamped. The connector includes two parallel guide rods (9). One end of the guide rod (9) is fixedly connected to the fixed clamp body (1) near both ends. A guide hole corresponding to the guide rod (9) is opened on the movable clamp body (2) near both ends. The two guide rods (9) pass through the two guide holes respectively. The movable clamp body (2) moves along the length direction of the guide rod (9) under the drive of the clamp body driving device. The top of the fixed clamp body (1) and the movable clamp body (2) are respectively provided with a first linear guide rail (12) and a second linear guide rail (13). A first slider (14) and a second slider (15) are slidably mounted on the first linear guide rail (12). A third slider (16) and a fourth slider (17) are slidably mounted on the second linear guide rail (13). The first pawl (3), the second pawl (4), the third pawl (5), and the fourth pawl (6) are rotatably mounted on the first slider (14), the second slider (15), the third slider (16), and the fourth slider (17), respectively. A claw fixing member (8) is provided on the second slider (15), a fourth claw fixing member (7) is provided on the fourth slider (17), a first claw fixing member (19) is provided at one end of the fixed clamp body (1) away from the second claw (4), which is used to hold the first slider (14) in use to prevent the first claw (3) from moving away from the second claw (4), and a third claw fixing member (21) is provided at one end of the movable clamp body (2) away from the fourth claw (6), which is used to hold the third slider (16) in use to prevent the third claw (5) from moving away from the fourth claw (6); The first slider (14), the second slider (15), the third slider (16), and the fourth slider (17) are respectively fixed with L-shaped first limiting blocks (30), second limiting blocks (31), third limiting blocks (32), and fourth limiting blocks (33). The openings of the first limiting blocks (30) and the second limiting blocks (31) are set facing each other and both face the movable clamp body (2). The openings of the third limiting blocks (32) and the fourth limiting blocks (33) are set facing each other and both face the fixed clamp body (1). The first limiting blocks (30), the second limiting blocks (31), the third limiting blocks (32), and the fourth limiting blocks (33) make the rotation angle range of the first pawl (3), the second pawl (4), the third pawl (5), and the fourth pawl (6) all 90 degrees.

2. The adjustable jaw bench vise according to claim 1, characterized in that: The clamp body drive device is a main screw (10). One end of the main screw (10) is a smooth section that passes through the fixed clamp body (1) and is rotatably connected to the fixed clamp body (1). The threaded section of the main screw (10) passes through the movable clamp body (2) and is threadedly engaged with the movable clamp body (2). Rotating the main screw (10) is used to pull or push the movable clamp body (2) toward or away from the fixed clamp body (1).

3. The adjustable jaw bench vise according to claim 2, characterized in that: A handwheel (11) is provided at the end of the main lead screw (10) for rotating the main lead screw (10) in use.

4. The adjustable jaw bench vise according to claim 1, characterized in that: The second claw fixing member (8) is the second hand screw A, which passes through the second slider (15) and is threadedly engaged with the second slider (15). The end of the second hand screw A abuts against the first linear guide (12) to prevent the second slider (15) from moving on the first linear guide (12). The fourth claw fixing member (7) is the fourth hand screw A, which passes through the fourth slider (17) and is threadedly engaged with the fourth slider (17). The end of the fourth hand screw A abuts against the second linear guide (13) to prevent the fourth slider (17) from moving on the second linear guide (13).

5. The adjustable jaw bench vise according to claim 1, characterized in that: A first fixing block (18) is fixed at one end of the first linear guide (12) away from the second slider (15). The first claw fixing member (19) is a first hand-tightening screw A. The first hand-tightening screw A passes through the first fixing block (18) and is threadedly engaged with the first fixing block (18). The end of the first hand-tightening screw A abuts against the first slider (14) to prevent the first slider (14) from sliding away from the second slider (15). A second fixing block (20) is fixed at one end of the second linear guide (13) away from the fourth slider (17). The third claw fixing member (21) is a third hand-tightening screw A. The third hand-tightening screw A passes through the second fixing block (20) and is threadedly engaged with the second fixing block (20). The end of the third hand-tightening screw A abuts against the third slider (16) to prevent the third slider (16) from sliding away from the fourth slider (17).

6. The adjustable jaw bench vise according to claim 1, characterized in that: One end of the first pawl (3) is rotatably connected to the first slider (14) via a vertical first rotating shaft (22). A first hand-tightening screw B (23) with its thread is provided on the first pawl (3). Tightening the first hand-tightening screw B (23) causes it to press against the first slider (14) to prevent the first pawl (3) from rotating relative to the first slider (14). One end of the second pawl (4) is rotatably connected to the second slider (15) via a vertical second rotating shaft (24). A second hand-tightening screw B (25) with its thread is provided on the second pawl (4). Tightening the second hand-tightening screw B (25) causes it to press against the second slider (15) to prevent the second pawl (4) from rotating relative to the second slider (15). One end of the third pawl (5) is rotatably connected to the third slider (16) via a vertical third pivot (26). A third hand screw B (27) with a threaded engagement is provided on the third pawl (5). Tightening the third hand screw B (27) causes it to press against the third slider (16) to prevent the third pawl (5) from rotating relative to the third slider (16). One end of the fourth pawl (6) is rotatably connected to the fourth slider (17) via a vertical fourth pivot (28). A fourth hand screw B (29) with a threaded engagement is provided on the fourth pawl (6). Tightening the fourth hand screw B (29) causes it to press against the fourth slider (17) to prevent the fourth pawl (6) from rotating relative to the fourth slider (17).

7. The adjustable jaw bench vise according to any one of claims 1 to 6, characterized in that: The first jaw (3), the second jaw (4), the third jaw (5), and the fourth jaw (6) are provided with anti-slip textures at the end used to hold the workpiece to be clamped when in use.

Images