Combined type precise shaft tong clamp

Abstract

The utility model belongs to the technical field of pincer clamps, and particularly relates to a combined type precise shaft pincer clamp which comprises a bottom plate, a first fixing check block and a second fixing check block are connected to the two sides of the upper side of the bottom plate through screws respectively, a sliding groove is formed in the upper side of the bottom plate, a first sliding block is connected into the sliding groove in a sliding mode, and the upper end of the first sliding block penetrates through the surface of the upper end of the bottom plate. The upper end of the first sliding block is fixedly connected with a movable check block, the opposite sides of the first fixed check block and the movable check block are each provided with a jaw, the opposite sides of the two jaws are arc-shaped faces, the two arc-shaped faces are each provided with two second sliding blocks, and the side, away from the jaws, of the movable check block is rotationally connected with a first screw rod. On the basis that the two jaws are used for clamping the two sides of the precision shaft, the second sliding block is additionally arranged to limit the front portion and the back portion of the precision shaft, and the front-back displacement phenomenon of the precision shaft in the machining process can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamp fixtures, and particularly relates to a combined precision shaft clamp fixture. Background Technique

[0002] In the fields of machining, assembly, inspection, etc., it is often necessary to fix and clamp various shaft parts or other workpieces to facilitate subsequent operations.

[0003] Traditional fixtures often can only provide clamping force in a single direction. For the clamping of precision shafts, they can usually be fixed to a certain extent only in the left and right directions. However, in actual applications, relying solely on left and right clamping is difficult to fully meet the stability requirements of precision shafts. For example, when rotating at high speed or being impacted by external forces, the precision shaft may displace in the front and back directions, thereby affecting the machining accuracy and even resulting in product scrapping. Content of the Utility Model

[0004] The purpose of the utility model is to provide a combined precision shaft clamp fixture. On the basis of clamping the precision shaft on both sides by two jaws, a slider two is added to limit the precision shaft in the front and back directions, which can effectively reduce the phenomenon of front and back displacement of the precision shaft during the machining process.

[0005] The technical solution adopted by the utility model is specifically as follows:

[0006] A combined precision shaft clamp fixture includes a bottom plate. On both sides of the upper side of the bottom plate, a fixed stop block one and a fixed stop block two are respectively connected by screws. A chute is opened on the upper side of the bottom plate. A slider one is slidably connected inside the chute. The upper end of the slider one penetrates through the upper surface of the bottom plate. A moving stop block is fixedly connected to the upper end of the slider one. Clamping jaws are assembled on the opposite sides of the fixed stop block one and the moving stop block. The opposite sides of the two clamping jaws are arc-shaped surfaces. Two slider twos are assembled on both arc-shaped surfaces. A screw rod one is rotatably connected to the side of the moving stop block away from the clamping jaw. The screw rod one penetrates through the fixed stop block two, and the screw rod one is in threaded connection with the fixed stop block two.

[0007] Further, sliding plates are assembled on both arc-shaped surfaces. The two slider twos are slidably connected to the outside of the sliding plates. Both ends of the sliding plates are in threaded connection with screw rods two. The ends of the screw rods two are rotatably connected to the slider twos. A runner is fixedly connected to one end of each of the two screw rods two away from the slider two.

[0008] Further, a round hole is opened on the side of the moving stop block away from the clamping jaw. One end of the screw rod one close to the moving stop block is a round rod. The round rod of the screw rod one is inserted into the inside of the round hole. A magnet is fixedly connected to the inner wall of the round hole. The material of the round rod is iron.

[0009] Further, receiving grooves are formed on both of the arc-shaped surfaces. The sliding plate is slidably connected inside the receiving groove. A compression spring is fixedly connected inside the receiving groove, and the end of the compression spring is fixedly connected to the sliding plate.

[0010] Further, two holes are formed on each of the two fixed stoppers and the moving stopper. Screws are inserted into the two holes, and the screws penetrate through the holes and are threadedly connected to the jaws.

[0011] Further, one end of the first screw rod away from the moving stopper is fixedly connected with a turntable. A rocker is fixedly connected to one side of the turntable, and an anti-slip sleeve is rotatably connected to the outside of the rocker.

[0012] The technical effects achieved by the present utility model are as follows:

[0013] For the combined precision shaft clamp of the present utility model, on the basis of clamping the precision shaft on both sides by two jaws, a second slider is added to limit the precision shaft before and after, which can effectively reduce the phenomenon of forward and backward displacement of the precision shaft during the processing. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the present utility model;

[0015] Figure 2 is the sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is the structural schematic diagram between the compression spring and the sliding plate of the present utility model;

[0017] Figure 4 is the structural schematic diagram of the jaws of the present utility model;

[0018] Figure 5 is the exploded structural diagram of the jaws of the present utility model;

[0019] Figure 6 is the present utility model Figure 2 the enlarged view of part A in;

[0020] Figure 7 is the structural schematic diagram of the precision shaft of the present utility model.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Base plate; 2. First fixed stop; 3. Movable stop; 4. Second fixed stop; 5. Jaw; 6. First screw; 7. Slide groove; 8. Disc-shaped screw; 9. First slider; 10. Rotating wheel; 11. Second screw; 12. Second slider; 13. Slide plate; 14. Pressure spring; 15. Baffle; 16. Magnet; 17. Anti-slip sleeve; 18. Turntable; 19. Crank; 20. Shaft body; 21. Protrusion. Detailed implementation manner

[0023] In order to make the purpose and advantages of the present utility model more clear and understandable, the present utility model will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present utility model, and does not strictly limit the scope of protection specifically claimed by the present utility model.

[0024] As Figures 1-7 shown, a combined precision shaft clamp includes a base plate 1. On both sides of the upper side of the base plate 1, a first fixed stop 2 and a second fixed stop 4 are respectively connected by screws. A slide groove 7 is opened on the upper side of the base plate 1. A first slider 9 is slidably connected inside the slide groove 7. The upper end of the first slider 9 penetrates through the upper surface of the base plate 1. A movable stop 3 is fixedly connected to the upper end of the first slider 9. On the opposite sides of the first fixed stop 2 and the movable stop 3, jaws 5 are assembled. The opposite sides of the two jaws 5 are arc-shaped surfaces. Two second sliders 12 are assembled on both arc-shaped surfaces. On the side of the movable stop 3 away from the jaw 5, a first screw 6 is rotatably connected. The first screw 6 penetrates through the second fixed stop 4, and the first screw 6 is threadedly connected to the second fixed stop 4;

[0025] When the user uses it, the first slider 9 fixedly connected to the lower side of the movable stop 3 is slidably connected inside the slide groove 7. Then, the first fixed stop 2 and the second fixed stop 4 are connected to both sides of the upper side of the base plate 1 by screws. The precision shaft is placed inside two adjacent jaws 5. At this time, rotate the first screw 6 to clamp the shaft body 20 of the precision shaft with the two arc-shaped surfaces. At the same time, make the second sliders 12 be respectively located at the front and rear ends of the protrusion 21, and limit the protrusion 21 front and rear through the two second sliders 12, reducing the phenomenon of front and rear displacement of the precision shaft during the processing.

[0026] As Figure 3As shown in the figure, slide plates 13 are assembled on both arc-shaped surfaces. Two second sliders 12 are slidably connected to the outer sides of the slide plates 13. Threaded rods 11 are connected to both ends of the slide plates 13. The ends of the threaded rods 11 are rotatably connected to the second sliders 12. Rotating wheels 10 are fixedly connected to one ends of the two threaded rods 11 away from the second sliders 12. During use, rotate the rotating wheels 10, so that the threaded rods 11 on both sides of the jaws 5 drive the second sliders 12 to slide on the outer sides of the slide plates 13, and push the second sliders 12 to move towards the convex portions 21. The generated clamping force can fix the positions of the convex portions 21, ensuring that the convex portions 21 are subjected to sufficient resistance in the front-rear direction and are difficult to move, and will not loosen or displace during the processing operation, thereby improving the accuracy and stability of the operation;

[0027] Rotating the rotating wheels 10 drives the second sliders 12 to move, thereby adjusting the distance between two adjacent second sliders 12 to adapt to the convex portions 21 of different lengths, so that precision shafts of different models can be clamped.

[0028] As Figure 6 shown in the figure, a round hole is formed on the side of the moving block 3 away from the jaws 5. One end of the threaded rod 6 close to the moving block 3 is a round rod, and the round rod of the threaded rod 6 is inserted into the inside of the round hole. A magnet 16 is fixedly connected to the inner wall of the round hole. The material of the round rod is iron. During use, one end of the threaded rod 6 is inserted into the inside of the round hole. When the round rod is inserted into the inside of the round hole, the magnet 16 generates an adsorption effect on it. This adsorption force ensures the firm connection between the threaded rod 6 and the moving block 3, reduces loosening due to external forces, and indirectly enhances the fixing effect on the convex portion 21 in the front-rear direction, making it more compact and stable. During use, the situation of loosening or detachment between the round rod and the round hole is reduced. Even under the impact or vibration of a certain external force, it can be ensured that the connection between the threaded rod 6 and the moving block 3 will not be damaged. The stable connection and convenient installation and disassembly methods reduce the adjustment and maintenance time of the fixture during use and improve work efficiency.

[0029] As Figure 5As shown in the figure, storage grooves are provided on both arc-shaped surfaces. The baffle 15 and the sliding plate 13 are slidably connected inside the storage grooves. A compression spring 14 is fixedly connected inside the storage grooves, and the end of the compression spring 14 is fixedly connected to the sliding plate 13. During use, due to the arrangement of the compression spring 14, when the precision shaft exerts a thrust on the second slider 12, the second slider 12 can automatically retract into the storage groove, and the telescopic length of the second slider 12 can match the diameter difference between the shaft body 20 and the convex part 21. During the clamping process, the telescopic length of the second slider 12 can be automatically adjusted according to the size and shape of the convex part 21. While the second slider 12 positions the convex part 21, the arc-shaped surface can be closely attached to the side surface of the shaft body 20, enabling the second slider 12 and the arc-shaped surface to reinforce the precision shaft simultaneously. This adaptive adjustment function can adapt to precision shafts of different sizes, improving the versatility and clamping performance of the fixture.

[0030] As Figures 1-3 shown, two holes are provided on both the two fixed stoppers 1 and the movable stopper 3, and a disc-shaped screw 8 is inserted into each of the two holes. The disc-shaped screw 8 passes through the hole and is threadedly connected to the jaw 5. The quick replacement is achieved through screw connection, enabling the shaft fixture to replace jaws 5 of different models according to specific requirements, greatly improving the flexibility and applicability of the fixture. The appropriate jaw 5 can be selected according to the hardness, surface roughness, and other characteristics of the object to ensure the firmness and safety of clamping while reducing damage to the object. When the jaw 5 needs to be replaced, simply use a simple tool such as a screwdriver to quickly disassemble and install the screw to achieve the replacement of the jaw 5. This convenient operation method greatly saves the replacement time and improves the work efficiency.

[0031] As Figure 3 shown, one end of the first screw 6 away from the movable stopper 3 is fixedly connected to a turntable 18, and a crank 19 is fixedly connected to one side of the turntable 18. An anti-slip sleeve 17 is rotatably connected to the outside of the crank 19. During use, by rotating the anti-slip sleeve 17, the torque is transmitted to the first screw 6 through the turntable 18 and the crank 19, causing the first screw 6 to drive the movable stopper 3 to move forward. The turntable 18 of the device at one end of the first screw 6 away from the movable stopper 3 utilizes the lever principle and the characteristics of circular motion, and a small force can generate a large torque, thus easily rotating the screw.

[0032] The working principle of the present utility model is as follows:

[0033] Place the precision shaft inside the inner sides of the two opposing jaws 5. By rotating the first screw 6, the jaws 5 can be pushed to clamp the circumferential side of the precision shaft. At the same time, rotate the runner 10 to drive the two second sliders 12 to move, and limit the front and rear ends of the convex part 21 of the precision shaft, then the clamping of the precision shaft can be completed for processing the precision shaft.

[0034] In summary, based on clamping the precision shaft on both sides by two jaws 5, the present technical solution adds a second slider 12 to limit the precision shaft before and after, which can effectively reduce the phenomenon of forward and backward displacement of the precision shaft during the processing.

[0035] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A combined precision shaft clamp, characterized in that: It comprises a bottom plate (1), wherein two sides of the upper side of the bottom plate (1) are respectively connected with a fixed stopper 1 (2) and a fixed stopper 2 (4) by screws, a slide groove (7) is provided on the upper side of the bottom plate (1), a slider 1 (9) is slidably connected inside the slide groove (7), the upper end of the slider 1 (9) passes through the upper end surface of the bottom plate (1), the upper end of the slider 1 (9) is fixedly connected with a movable stopper (3), the fixed stopper 1 (2) and the movable stopper (3) are both equipped with jaws (5) on the opposite sides, the two jaws (5) are on the opposite sides with arc-shaped surfaces, and two sliders 2 (12) are both equipped on the two arc-shaped surfaces; The side of the movable stopper (3) away from the jaw (5) is rotatably connected to a screw rod 1 (6), the screw rod 1 (6) penetrates the fixed stopper 2 (4), and the screw rod 1 (6) and the fixed stopper 2 (4) are threadedly connected.

2. A combined precision shaft clamp according to claim 1, characterized in that: The two arc-shaped surfaces are each equipped with a slide plate (13), the two sliders (12) are slidably connected to the outer side of the slide plate (13), both ends of the slide plate (13) are threadedly connected to the screw rod (11), the end of the screw rod (11) is rotatably connected to the slider (12), and one end of the two screw rods (11) away from the slider (12) is fixedly connected to the rotating wheel (10).

3. The combined precision shaft clamp according to claim 1, characterized in that: A circular hole is provided on a side of the movable stopper (3) away from the jaw (5); an end of the screw rod (6) close to the movable stopper (3) is a round rod; the screw rod (6) is inserted into the circular hole; a magnet (16) is fixedly connected to the inner wall of the circular hole; and the round rod is made of iron.

4. The combined precision shaft clamp according to claim 2, characterized in that: The two arc-shaped surfaces are each provided with a receiving groove, the slide plate (13) is slidably connected inside the receiving groove, a pressure spring (14) is fixedly connected inside the receiving groove, and the end of the pressure spring (14) is fixedly connected to the slide plate (13).

5. The combined precision shaft clamp according to claim 1, characterized in that: Two holes are provided on the two fixed stoppers (2) and the movable stopper (3), screws (8) are inserted into the two holes, and the screws (8) pass through the holes and are threadedly connected to the jaws (5).

6. The combined precision shaft clamp according to claim 1, characterized in that: One end of the screw rod (6) away from the movable stopper (3) is fixedly connected to a turntable (18), one side of the turntable (18) is fixedly connected to a crank (19), and the outer side of the crank (19) is rotatably connected to an anti-slip sleeve (17).

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