A vise clamping positioning device

Abstract

This invention relates to the field of vise clamping and positioning, specifically to a vise clamping and positioning device, comprising a base, on which a fixed chuck is fixedly mounted. A sliding chuck, which cooperates with the fixed chuck, is slidably connected to one side of the fixed chuck. A front pad and a rear pad are located between the fixed chuck and the sliding chuck. The front pad is fixedly mounted on the fixed chuck, and the rear pad is fixedly mounted on the sliding chuck. This invention clamps a part by pushing the sliding chuck to move. When the sliding chuck moves past the rear pad and closer to the front pad, the rear pad pushes a pusher to move. The pusher pushes a pusher block on one side closer to the part to be clamped, pushing the part tightly against a limiting post on one side. This ensures that when the vise clamps the part, it is close to the limiting post, preventing the part from being inaccurately aligned to the zero point and ensuring the precision and quality of the processed parts.

Description

Technical Field

[0001] This invention relates to the field of vise clamping and positioning, specifically to a vise clamping and positioning device. Background Technology

[0002] A vise is a common clamping tool in the mechanical field, also called a bench vise or pliers. It uses the strong clamping force generated by a screw mechanism to firmly clamp workpieces of different shapes and sizes between two jaws, preventing the workpieces from moving or shaking during operation. However, when a vise is installed on machining equipment as a fixing device, since the vise lacks lateral positioning function, each product needs to be individually zeroed during processing, which is very inconvenient. Sometimes, errors due to human error can lead to wasted resources. To address this issue, patent application CN104191273B provides a tooling fixture for quick workpiece positioning and loading / unloading. It ensures the lateral positioning of the workpiece by setting a scale structure on one side of the vise and setting a limiting device on the scale structure. However, the operator must hold the workpiece down during clamping to prevent it from shaking and shifting. If the workpiece is not close to the limiting device on one side after clamping, it will not be aligned with the zero point, reducing the accuracy of the machined part.

[0003] Therefore, a vise clamping and positioning device is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a vise clamping and positioning device to solve the problem that the vise does not have a lateral positioning function and will waste resources due to human error when finding the zero point alone. At the same time, it solves the problem that the part will not be aligned with the zero point if there is no limiting device on one side after clamping, which will reduce the accuracy of the part after product processing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A vise clamping and positioning device includes a base, on which a fixed chuck is fixedly mounted. A sliding chuck that mates with the fixed chuck is slidably connected to one side of the fixed chuck. A front pad and a rear pad are located between the fixed chuck and the sliding chuck. The front pad is fixedly mounted on the fixed chuck, and the rear pad is fixedly mounted on the sliding chuck. Both the front and rear pads are fixedly mounted to the fixed and sliding chucks by bolts. The front pad has multiple evenly spaced threaded holes, one of which is threaded with a limit post. A push block is slidably connected to one side of the front pad. A pusher is mounted on the front pad and connected to the push block. When the rear pad moves closer to the front pad, the pusher pushes the push block closer to the part to be clamped.

[0006] In daily CNC production, vises are used to hold machined parts in place. However, since vises lack lateral positioning capabilities, each part requires individual zero-point finding, which is inconvenient. Sometimes, human error during zero-point finding can lead to resource waste. Therefore, a positioning device needs to be installed on the vise to allow for quick positioning and fixation of the workpiece. Specifically, the front and rear pads are fixed to the fixed and sliding chucks respectively. During installation, loosen the bolts on the front or rear pads, and then... The rear pads abut against the side walls of the fixed chuck and the sliding chuck respectively. Then, the limiting post is installed into the threaded hole for positioning. When in use, the workpiece to be processed is placed on the front and rear pads and close to the limiting post on one side. At this time, the sliding chuck is pushed to move and clamp the middle part. When the sliding chuck moves closer to the front pads by passing the rear pads, the rear pads will push the pusher to move. The pusher pushes the pusher block on one side closer to the workpiece to be clamped, pushing the workpiece to be clamped tightly against the limiting post on one side. This ensures that when the vise clamps the workpiece, the workpiece can be close to the limiting post, avoiding the workpiece not being aligned with the zero point and ensuring the accuracy and quality of the processed parts.

[0007] Preferably, the pushing member includes a first telescopic rod fixedly mounted on the front pad block, a first airbag installed inside the first telescopic rod, the movable end of the first telescopic rod abutting against the rear pad block, a second telescopic rod mounted on the front pad block, a second airbag installed inside the second telescopic rod, a pipe connecting the first airbag and the second airbag, a cylinder slidably connected to the movable end of the second telescopic rod, two sliding circular plates slidably connected inside the cylinder, one of the sliding circular plates being fixedly mounted to the movable end of the second telescopic rod, and a pushing rod being fixedly mounted on the other sliding circular plate, the pushing rod extending outside the cylinder and being mounted to the pushing block, and a first compression spring installed between the two sliding circular plates.

[0008] After the operator places the workpiece in position, they push the sliding chuck on the vise to move. The moving sliding chuck continuously approaches the workpiece, and simultaneously, it pushes the movable end of the first telescopic rod on the front pad to retract, causing it to enter the first telescopic rod. This compresses the first air bladder inside the first telescopic rod, and the compressed gas in the first air bladder enters the second air bladder through a pipe on one side, causing the second air bladder to expand. The expanding second air bladder pushes the movable end of the second telescopic rod to extend. The movable end of the second telescopic rod is connected to a cylinder and a push rod, and moves to one side via the cylinder and push rod, continuously approaching the workpiece on one side. The push block is fixed to the push rod, so that the push rod pushes the workpiece against the limiting post on one side. Of course, because the length of the workpiece varies, the distance the push block needs to move also varies. The compression spring inside the cylinder can push the workpiece against the limiting post even when the push block is against workpieces of different lengths, ensuring that the workpiece is close to the limiting post when the vise clamps it, preventing the workpiece from being misaligned with the zero point, and ensuring the accuracy and quality of the processed part.

[0009] Preferably, the rear pad has a sliding groove, a sliding column is fixedly installed in the sliding groove, a pad is slidably connected to the rear pad, the pad is slidably connected in the sliding groove, the pad has a round hole for the sliding column to pass through, a second compression spring is sleeved on the sliding column, one end of the second compression spring is fixedly installed in the sliding groove, and the other end is fixedly installed in the pad, the second compression spring is located on the side of the pad closer to the front pad.

[0010] It is important to note that because a certain gap exists between the other side of the part and the fixed chuck after the workpiece is in close contact with the limiting post, the displacement of the part will cause friction with the limiting post when the sliding chuck moves to clamp the part in the middle. Due to the rigidity of the sliding chuck, the part will wear down the limiting post or itself. Long-term wear will cause the part to not be positioned at the specified zero point. Therefore, when the front and rear pads on the vise clamp the part together, the movement of the rear pad will drive the pad sliding on it to move. The moving pad will first press against one side of the workpiece, and then push the part to move against the side wall of the fixed chuck through the pad and the second compression spring below. This avoids large friction between the part and the limiting post, which would cause the limiting post to wear down and become inaccurately positioned. This ensures that when the vise clamps the part, the part can be close to the limiting post, preventing the part from not being aligned with the zero point and ensuring the accuracy and quality of the finished product.

[0011] Preferably, both the front pad and the rear pad are divided into upper and lower parts, namely a fixed block and a sliding block, and the connection between the fixed block and the sliding block is inclined. The fixed block has an elongated groove, and a threaded rod is rotatably connected in the elongated groove. A movable block is threadedly connected to the threaded rod, and the movable block is slidably connected in the elongated groove. The sliding plate has a groove, and the movable block is slidably connected in the groove.

[0012] In the specific use of pads, some parts have low machining heights and require the use of pads with higher heights. In this case, ordinary pads cannot be used, and other types of pads need to be adjusted. This results in manufacturers needing to use various types of pads. Therefore, in this invention, by rotating a threaded rod on one side, the rotation of the threaded rod drives the moving block connected to its thread to move. Because the moving block slides on the sliding block, the upper and lower halves of the pad will be offset from each other. Since the connection between the fixed block and the sliding block is set at an incline, the offset of the fixed block and the sliding block will increase the overall height of the pad after offset, so as to accommodate different types of parts. At the same time, the movement of the upper half of the inclined block will drive the limit post to move. By fine-tuning the limit post, only the limit post with a specified number of threaded holes can be steplessly adjusted, which facilitates the precise positioning of the part during machining. This ensures that when the vise clamps the part, the part can be close to the limit post, avoiding the part not being aligned with the zero point, and ensuring the accuracy and quality of the machined parts.

[0013] Preferably, a mounting bracket is fixedly installed on the second telescopic rod, and a mounting groove is provided at the bottom of the mounting bracket. Multiple screws are provided in the mounting groove, and the multiple screws are threaded into the threaded holes.

[0014] Because it needs to accommodate different types of parts, when the second telescopic rod is pushed to move the push block and press against the part, the pressure generated by the push rod when pressing against different types of parts is different due to the presence of the first compression spring. Insufficient pressure is not enough to push the metal part tightly against the limiting post. Therefore, the specific position of the second telescopic rod needs to be adjusted to accommodate different types of parts. Specifically, use tools to loosen several screws, then adjust the specific position of the mounting bracket, and then tighten the screws again to fix the mounting bracket in the new position. This allows the second telescopic rod to push the push block against different types of parts, ensuring that the part is tightly against the limiting post when the vise clamps it, preventing the part from being misaligned with the zero point, and ensuring the accuracy and quality of the parts after processing.

[0015] Preferably, a long plate is fixedly installed on the mounting bracket, and a guide groove is formed on the long plate. The guide groove is generally Z-shaped. A sliding frame is fixedly installed on one end of the push rod. Multiple ball grooves are formed on the push block, and balls are rolled in the ball grooves. The balls are rolled and connected to the sliding frame. A roller is rotatably connected to one side of the push block, and the roller is rolled and connected in the guide groove.

[0016] When placing the part on the pad, the operator needs to position the part correctly to prevent it from separating from the bottom pad during the clamping process, which would cause the part to not be able to fit snugly against the bottom pad and affect the processing quality. In order to ensure production efficiency, the operator needs to place the part quickly. However, this quick placement can cause the part to float during movement. Therefore, as the push block moves the part to a stop on one side, it will move downwards to ensure that the part does not move upwards during the movement. Specifically, the second telescopic rod pushes the cylinder to move. The cylinder pushes the push block against the part through the first compression spring. When it moves to the designated position, the roller rolls to the corner of the guide groove, pushing the push block downwards during the movement. This moves the part while preventing it from moving upwards, ensuring that the part is close to the stop when the vise clamps it, preventing the part from being misaligned with the zero point and ensuring the accuracy and quality of the processed part.

[0017] Preferably, the push block has inclined stripes, the inclined direction of which is directed toward the front pad block, and the inclined angle is less than 30°. The inclined stripes ensure that the movement direction of the part is always angled downwards during the movement of one side of the part, abutting against the front pad block below and the fixed clamp on one side. This prevents gaps between the part and the front pad block or fixed clamp, ensuring the part is accurately aligned to the zero point and guaranteeing the precision and quality of the processed parts.

[0018] Preferably, the limiting post includes an upper post and a lower threaded post. The post is made of a high-hardness alloy and has an internal conical hollow structure. The lower threaded post has a conical protrusion. The post and the threaded post are interlocked, and the threaded post is tightened counterclockwise. By using a high-hardness alloy, the deformation of the post caused by long-term wear is avoided, which would affect the positioning accuracy. This prevents the part from being misaligned with the zero point and ensures the precision and quality of the parts after processing.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. At this time, push the sliding chuck to move and clamp the middle part. When the sliding chuck moves close to the front pad block after passing the rear pad block, the rear pad block will push the pusher to run. The pusher pushes the pusher block on one side close to the part to be clamped, pushing the part to be clamped tightly against the limit post on one side. This ensures that when the vise clamps the part, the part can be close to the limit post, avoiding the part not being accurately aligned with the zero point, and ensuring the accuracy and quality of the parts after product processing.

[0020] 2. The movement of the rear pad block causes the pad plate to first press against the part to be processed on one side. The part is then pushed to move by the pad plate and the second compression spring below, and presses against the side wall of the fixed chuck on one side. This avoids large friction between the part and the limit post, which would cause the limit post to wear and make it impossible to position accurately. This also prevents the part from not being aligned with the zero point and ensures the accuracy and quality of the parts after processing.

[0021] 3. By rotating the threaded rod on one side, the threaded rod rotates and drives the moving block connected to it to move. Because the moving block slides on the sliding block, the upper and lower halves of the pad will be misaligned. Since the connection between the fixed block and the sliding block is inclined, the overall height of the pad will be increased after the fixed block and the sliding block are misaligned, so as to adapt to different types of parts and indirectly ensure the precision and quality of the parts after product processing. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the internal structure of the rear pad block in this invention; Figure 4 This is a schematic diagram of the structure of the second telescopic rod in this invention; Figure 5 This is a schematic diagram of the structure of the push block in this invention; Figure 6 This is a schematic diagram of the internal structure of the sliding frame in this invention; Figure 7 This is a schematic diagram of the limiting post in this invention; Figure 8 This is a schematic diagram of the internal structure of the second telescopic rod in this invention.

[0023] In the diagram: 1. Base; 101. Second airbag; 2. Fixed clamp; 3. Sliding clamp; 4. Bolt; 501. Front pad; 502. Rear pad; 503. Fixed block; 504. Sliding block; 6. Threaded hole; 7. Limiting post; 701. Column; 702. Threaded post; 8. Pad; 9. Threaded rod; 10. Second telescopic rod; 11. Cylinder; 12. Push rod; 13. Sliding frame; 14. Push block; 141. Inclined stripe; 15. Long plate; 16. Mounting bracket; 17. Screw; 18. Sliding column; 19. Second compression spring; 21. Moving block; 22. Groove; 23. Sliding circular plate; 24. First compression spring; 25. First telescopic rod; 251. First airbag; 26. Guide groove; 27. Roller; 28. Ball bearing. Detailed Implementation

[0024] Please see Figures 1 to 8 The present invention provides a vise clamping and positioning device, the technical solution of which is as follows: Please refer to a vise clamping and positioning device. Figure 1 and Figure 5 The device includes a base 1, on which a fixed clamp 2 is fixedly mounted. A sliding clamp 3 that mates with the fixed clamp 2 is slidably connected to one side of the fixed clamp 2. A front pad 501 and a rear pad 502 are located between the fixed clamp 2 and the sliding clamp 3. The front pad 501 is fixedly mounted on the fixed clamp 2, and the rear pad 502 is fixedly mounted on the sliding clamp 3. Both the front pad 501 and the rear pad 502 are fixedly mounted to the fixed clamp 2 and the sliding clamp 3 by bolts 4. The front pad 501 has multiple evenly arranged threaded holes 6. One of the threaded holes 6 is threadedly connected to a limit post 7. A push block 14 is slidably connected to one side of the front pad 501. The push block 14 has inclined stripes 141. The inclined direction of the inclined stripes 141 is set towards the front pad 501, and the inclined angle is less than 30°.

[0025] Please see Figure 2 , Figure 4 and Figure 8A first telescopic rod 25 is installed on the front pad 501, and a first airbag 251 is installed inside the first telescopic rod 25. The movable end of the first telescopic rod 25 abuts against the rear pad 502. A second telescopic rod 10 is installed on the front pad 501, and a second airbag 101 is installed inside the second telescopic rod 10. A pipe connects the first airbag 251 and the second airbag 101. A cylinder 11 is slidably connected to the movable end of the second telescopic rod 10. Two sliding circular plates 23 are slidably connected inside the cylinder 11. One sliding circular plate 23 is fixedly installed to the movable end of the second telescopic rod 10, and the other sliding circular plate 23 is fixedly installed... A push rod 12 is installed, extending outside the cylinder 11 and mounted on a push block 14. A first compression spring 24 is installed between two sliding circular plates 23. A long plate 15 is fixedly mounted on a mounting bracket 16, and a guide groove 26 is formed on the long plate 15. The guide groove 26 is Z-shaped. A sliding frame 13 is fixedly mounted on one end of the push rod 12. Multiple ball bearing 28 grooves are formed on the push block 14, and ball bearings 28 are rolled in the ball bearing 28 grooves and rolled on the sliding frame 13. A roller 27 is rotatably connected to one side of the push block 14 and rolled in the guide groove 26. A mounting bracket 16 is fixedly mounted on the second telescopic rod 10. A mounting groove is formed at the bottom of the mounting bracket 16, and multiple screws 17 are provided in the mounting groove. The screws 17 are all threaded into the threaded holes 6.

[0026] Please see Figure 1 and Figure 3 The rear pad 502 has a sliding groove, and a sliding column 18 is fixedly installed in the sliding groove. A pad 8 is slidably connected to the rear pad 502 and is slidably connected in the sliding groove. A round hole is opened on the pad 8 for the sliding column 18 to pass through. A second compression spring 19 is sleeved on the sliding column 18. One end of the second compression spring 19 is fixedly installed in the sliding groove, and the other end is fixedly installed in the pad 8. The second compression spring 19 is located on the side of the pad 8 near the front pad 501.

[0027] Please see Figure 1 and Figure 3 Both the front pad 501 and the rear pad 502 are divided into upper and lower parts, namely a fixed block 503 and a sliding block 504. The connection between the fixed block 503 and the sliding block 504 is inclined. The fixed block 503 has a long groove, and a threaded rod 9 is rotatably connected in the long groove. A movable block 21 is threadedly connected to the threaded rod 9. The movable block 21 is slidably connected in the long groove. The sliding block 504 has a groove 22, and the movable block 21 is slidably connected in the groove 22.

[0028] Please see Figure 1 and Figure 7The limiting post 7 includes an upper post 701 and a lower threaded post 702. The post 701 is made of high-hardness alloy and has a conical hollow structure inside. The lower threaded post 702 has a conical protrusion. The post 701 and the threaded post 702 are interlocked. The tightening direction of the threaded post 702 is counterclockwise.

[0029] Please see Figure 2 , Figure 4 and Figure 8 In use, the front pad 501 and the rear pad 502 are fixed to the fixed chuck 2 and the sliding chuck 3, respectively. During installation, loosen the bolts 4 installed on the front pad 501 or the rear pad 502, and place the front pad 501 or the rear pad 502 against the side walls of the fixed chuck 2 and the sliding chuck 3, respectively. Then, install the limiting post 7 into the required positioning threaded hole 6. Specifically, place the workpiece to be processed on the front and rear pads 502 and close to the limiting post 7 on one side. At this time, push the sliding chuck 3 to move and clamp the middle part. When the sliding chuck 3 moves closer to the front pad 501 through the rear pad 502, the rear pad 502 will push the movable end of the first telescopic rod 25 to retract, so that it enters the first telescopic rod 25, and push the first airbag 251 inside the first telescopic rod 25 into... The compressed air in the first airbag 251 enters the second airbag 101 through a pipe on one side, causing the second airbag 101 to expand. The expanding second airbag 101 pushes the movable end of the second telescopic rod 10 to extend. The movable end of the second telescopic rod 10 is connected to a cylinder 11 and a push rod 12. The cylinder 11 pushes the push rod 12 to one side, continuously approaching the part to be processed on one side. The push block 14 is fixed on the push rod 12, so that the push rod 12 pushes the part to be processed against the limiting post 7 on one side through the push block 14. Of course, because the length of the part to be processed is different, the distance that the push block 14 needs to move is also different. The compression spring in the cylinder 11 can push the part against the limiting post 7 even when the push block 14 is against parts of different lengths.

[0030] Please see Figure 3 and Figure 5It should be noted that because a certain gap is created between the other side of the part and the fixed chuck 2 after the workpiece is in close contact with the limiting post 7, when the sliding chuck 3 moves to clamp the workpiece in the middle, the displacement of the workpiece will generate a certain amount of friction with the limiting post 7. Due to the rigidity of the sliding chuck 3, the workpiece will wear down the limiting post 7 or itself. Long-term wear will cause the workpiece to not be positioned at the designated zero point. Therefore, when the front shim 501 and the rear shim 502 on the vise are clamped together, the rear shim... The movement of 502 will cause the sliding pad 8 to move. The moving pad 8 will first abut against the workpiece on one side. The workpiece will be pushed to move against the side wall of the fixed chuck 2 by the pad 8 and the second compression spring 19 below. The inclined stripe 141 ensures that the movement direction of the workpiece is always set diagonally downward during the movement of the workpiece, abutting against the front pad 501 below and the fixed chuck 2 on one side, avoiding gaps between the workpiece and the front pad 501 or the fixed chuck 2, and preventing the workpiece from being not accurately aligned with the zero point.

[0031] Please see Figure 2 and Figure 6 When the second telescopic rod 10 pushes the push block 14 to move and abut against the part, because the first compression spring 24 is provided, the pressure generated by the second telescopic rod 10 when abutting against different types of parts is different. The small pressure cannot push the metal part tightly against the limit post 7. Therefore, it is necessary to adjust the specific position of the second telescopic rod 10 to adapt to different types of parts. Specifically, use a tool to loosen multiple screws 17. At this time, adjust the specific position of the mounting bracket 16, tighten the screws 17 again, fix the mounting bracket 16 in the new position, and allow the second telescopic rod 10 to push the push block 14 to abut against different types of parts.

[0032] Please see Figure 2 and Figure 4 During the process of the push block 14 pushing the part to move against the limit post 7 on one side, the push block 14 will move downward a certain distance to ensure that the part will not move upward at a certain angle during the movement. Specifically, the second telescopic rod 10 pushes the cylinder 11 to move. The cylinder 11 pushes the push block 14 against the part through the first compression spring 24. When it moves to the designated position, the roller 27 rolls to the corner of the guide groove 26, pushing the push block 14 to move downward during the movement. While pushing the part to move, it prevents the part from moving upward, ensuring that when the vise clamps the part, the part can be close to the limit post 7, and preventing the part from not being aligned with the zero point.

[0033] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A vise clamping and positioning device, comprising a base (1), wherein a fixed chuck (2) is fixedly mounted on the base (1), and a sliding chuck (3) cooperating with the fixed chuck (2) is slidably connected to one side of the fixed chuck (2), characterized in that, A front pad (501) and a rear pad (502) are provided at the middle position of the fixed chuck (2) and the sliding chuck (3). The front pad (501) is fixedly installed on the fixed chuck (2), and the rear pad (502) is fixedly installed on the sliding chuck (3). The front pad (501) and the rear pad (502) are both fixedly installed on the fixed chuck (2) and the sliding chuck (3) by bolts (4). The front pad (501) has a plurality of evenly arranged threaded holes (6). One of the threaded holes (6) is threadedly connected to a limit post (7). A push block (14) is slidably connected to one side of the front pad (501). A pusher is installed on the front pad (501). The pusher is connected to the push block (14). When the rear pad (502) moves close to the front pad (501), the pusher pushes the push block (14) close to the part to be clamped.

2. The vise clamping and positioning device according to claim 1, characterized in that, The pusher includes a first telescopic rod (25) fixedly installed on the front pad (501), a first airbag (251) installed inside the first telescopic rod (25), the movable end of the first telescopic rod (25) abutting against the rear pad (502), a second telescopic rod (10) installed on the front pad (501), a second airbag (101) installed inside the second telescopic rod (10), a pipe connecting the first airbag (251) and the second airbag (101), a cylinder (11) slidably connected to the movable end of the second telescopic rod (10), two sliding circular plates (23) slidably connected inside the cylinder (11), one of the sliding circular plates (23) being fixedly installed with the movable end of the second telescopic rod (10), and a push rod (12) fixedly installed on the other side of the sliding circular plate (23), the push rod (12) extending outside the cylinder (11) and installed with the push block (14), and a first compression spring (24) installed between the two sliding circular plates (23).

3. The vise clamping and positioning device according to claim 2, characterized in that, The rear pad (502) has a sliding groove, and a sliding column (18) is fixedly installed in the sliding groove. A pad (8) is slidably connected to the rear pad (502). The pad (8) is slidably connected in the sliding groove. A round hole is opened on the pad (8) for the sliding column (18) to pass through. A second compression spring (19) is sleeved on the sliding column (18). One end of the second compression spring (19) is fixedly installed in the sliding groove, and the other end is fixedly installed in the pad (8). The second compression spring (19) is located on the side of the pad (8) close to the front pad (501).

4. The vise clamping and positioning device according to claim 1, characterized in that, The front pad (501) and the rear pad (502) are both divided into upper and lower parts, namely a fixed block (503) and a sliding block (504), and the connection between the fixed block (503) and the sliding block (504) is inclined. The fixed block (503) has a long groove, and a threaded rod (9) is rotatably connected in the long groove. A moving block (21) is threadedly connected to the threaded rod (9), and the moving block (21) is slidably connected in the long groove. The sliding block (504) has a groove (22), and the moving block (21) is slidably connected in the groove (22).

5. A vise clamping and positioning device according to claim 2, characterized in that, A mounting bracket (16) is fixedly installed on the second telescopic rod (10). The bottom of the mounting bracket (16) is provided with a mounting groove, and multiple screws (17) are provided in the mounting groove. All of the screws (17) are threaded into the threaded hole (6).

6. A vise clamping and positioning device according to claim 5, characterized in that, A long plate (15) is fixedly installed on the mounting bracket (16). A guide groove (26) is provided on the long plate (15). The guide groove (26) is arranged in a Z-shape. A sliding frame (13) is fixedly installed on one end of the push rod (12). A plurality of ball (28) grooves are provided on the push block (14). Balls (28) are rolled in the ball (28) grooves. The balls (28) are rolled on the sliding frame (13). A roller (27) is rotatably connected to one side of the push block (14). The roller (27) is rolled in the guide groove (26).

7. A vise clamping and positioning device according to claim 6, characterized in that, The push block (14) has inclined stripes (141) on it. The inclined stripes (141) are inclined towards the front pad block (501) and the inclined angle is less than 30°.

8. A vise clamping and positioning device according to claim 1, characterized in that, The limiting post (7) includes an upper post (701) and a lower threaded post (702). The post (701) is made of high-hardness alloy and has a conical hollow structure inside. The lower threaded post (702) has a conical protrusion. The post (701) and the threaded post (702) are interlocked. The tightening direction of the threaded post (702) is counterclockwise.

Images