Three-jaw chuck device

Abstract

The utility model relates to the technical field of clamping, in particular to a three-jaw chuck device which comprises a chuck body and jaws arranged on the chuck body. The system further comprises; an adjusting assembly is arranged at the top of the claw clamp and used for adjusting the claw clamp. A lifting assembly is arranged at the bottom of the claw clamp and used for moving the claw clamp. According to the three-jaw chuck device, the adjusting assembly convenient to disassemble and assemble is arranged at the top of the jaw clamp, the adjusting jaws on the adjusting assembly are installed at the top of the jaw clamp, clamping and fixing are conducted by rotating the limiting plate, the adjusting jaws in the matched shapes are conveniently installed according to workpieces in different shapes, and the applicability of the three-jaw chuck device is improved; and meanwhile, by driving a hydraulic rod on the lifting assembly, a claw clamp and an adjusting claw can be driven to move upwards, synchronous movement adjustment can be conveniently conducted according to the height of the workpiece, the claw clamp is clamped in the middle of the workpiece, and the stability of the gravity center during workpiece clamping is improved.

Description

Technical Field

[0001] This utility model relates to the field of three-jaw chuck technology, specifically a three-jaw chuck device. Background Technology

[0002] A three-jaw chuck is a machine tool accessory that uses the radial movement of three movable jaws evenly distributed on the chuck body to clamp and position the workpiece. This type of chuck is suitable for applications requiring high precision and stable clamping and is widely used in machining. However, the installation position of a three-jaw chuck is not easy to adjust, which has certain limitations.

[0003] Chinese Patent Publication No. CN219703550U discloses an easily adjustable three-jaw chuck device, including a base, with wing plates fixedly connected to both sides of the base, and mounting holes opened inside the wing plates. A base is fixedly connected to one end of the top of the base, and a three-jaw chuck is provided on the top of the base. The three-jaw chuck has three jaws on its top. A motor is fixedly connected to the end of the top of the base away from the base, and an adjustment mechanism is provided at the bottom of the base.

[0004] The aforementioned three-jaw chuck mainly clamps and fixes the workpiece by moving three sets of jaws. However, since the clamping surface of the jaws is usually designed in an arc shape, when clamping irregularly shaped workpieces, the contact area between the jaws and the workpiece will be relatively limited, which will result in uneven distribution of clamping force and even clamping gaps in some parts, which can easily cause the workpiece to loosen or shift during processing. Utility Model Content

[0005] The purpose of this invention is to provide a three-jaw chuck device to solve the problem that when the jaws of the three-jaw chuck clamp irregularly shaped workpieces, the contact area of ​​the clamping jaws is relatively limited, resulting in uneven distribution of clamping force and causing the workpiece to loosen or shift during processing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a three-jaw chuck device, comprising a chuck body and jaws disposed on the chuck body; and further comprising;

[0007] An adjustment assembly is disposed on the top of the jaw clamp and is used to adjust the jaw clamp. The adjustment assembly includes an adjustment jaw that is movably inserted into the top of the jaw clamp. A limiting plate is rotatably connected inside the chuck body and is engaged below the adjustment jaw.

[0008] A lifting assembly is disposed at the bottom of the jaw gripper and is used to move the jaw gripper. The lifting assembly includes a hydraulic rod disposed above the chuck body and is fixedly connected to the bottom of the jaw gripper.

[0009] Preferably, the top of the chuck body is slidably connected to a base, the claw is inserted into the top of the base, and the three sets of bases and claws are symmetrically distributed.

[0010] Preferably, the adjusting assembly further includes a connecting rod, which is fixedly connected to the bottom of the adjusting claw. The top of the claw clamp has a connecting groove, and the connecting rod is inserted into the connecting groove.

[0011] Preferably, the claw clamp is rotatably connected to a shaft, the limiting plate is fixedly connected to the bottom of the shaft, the side wall of the connecting rod is provided with a limiting groove, and the limiting plate is engaged inside the limiting groove.

[0012] Preferably, a rotating rod extends through the side wall of the gripper, and a worm gear is fixedly connected to the end of the rotating rod, with the worm gear rotatably connected inside the gripper.

[0013] Preferably, a worm gear is fixedly connected to the top of the shaft, and the worm gear meshes with the worm.

[0014] Preferably, the sidewall of the adjusting claw is provided with a flexible pad.

[0015] Preferably, the lifting assembly further includes a stabilizing rod, which is fixedly connected to the bottom of the gripper. A stabilizing groove is provided on the top of the base, and the stabilizing rod is slidably connected inside the stabilizing groove. The hydraulic rod is fixedly connected between the gripper and the base.

[0016] Compared with the prior art, the beneficial effects of this utility model are: by setting an easy-to-disassemble adjustment component on the top of the jaw clamp, and by installing the adjustment claw on the adjustment component on the top of the jaw clamp and fixing it by rotating the limiting plate, it is convenient to install the adjustment claw with the appropriate shape according to the workpiece of different shapes, thus improving its applicability.

[0017] Meanwhile, by setting a lifting component between the base and the jaws, the hydraulic rod on the lifting component can be driven to move the jaws and adjusting jaws upwards, which is convenient for synchronous adjustment according to the height of the workpiece, so that the jaws can hold the workpiece in the middle, thus improving the stability of the center of gravity when the workpiece is held. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the chuck body of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the adjusting claw of this utility model;

[0020] Figure 3 This is a schematic diagram of the unfolded structure of the adjustment component of this utility model;

[0021] Figure 4 This is a schematic diagram of the unfolded structure of the lifting component of this utility model.

[0022] In the diagram: 1. Chuck body; 2. Jaw gripper; 201. Base; 3. Adjustment assembly; 301. Adjustment jaw; 302. Connecting rod; 3021. Connecting groove; 303. Limiting plate; 3031. Limiting groove; 304. Worm gear; 3041. Shaft; 305. Rotating rod; 306. Worm; 307. Flexible pad; 4. Lifting assembly; 401. Hydraulic rod; 402. Stabilizing rod; 4021. Stabilizing groove. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] like Figure 1 - Figure 4 As shown, this application provides a three-jaw chuck device, including a chuck body 1 and jaw clamps 2 disposed on the chuck body 1; and also includes;

[0026] The chuck body 1 is slidably connected to the top of a base 201, and the claw 2 is inserted into the top of the base 201. The three sets of bases 201 and claws 2 are symmetrically distributed.

[0027] Specifically, such as Figure 2 As shown, an adjustment component 3 is provided on the top of the jaw clamp 2. The adjustment component 3 is used to adjust the jaw clamp 2. The adjustment component 3 includes an adjustment jaw 301, which is movably inserted into the top of the jaw clamp 2. A limiting plate 303 is rotatably connected inside the chuck body 1. The limiting plate 303 is snapped under the adjustment jaw 301. By providing an adjustment component 3 that is easy to install and remove on the top of the jaw clamp 2, and by installing the adjustment jaw 301 on the top of the jaw clamp 2 and snapping it in place by rotating the limiting plate 303, it is easy to install an adjustment jaw 301 with a suitable shape according to workpieces of different shapes, thus improving its applicability.

[0028] The bottom of the adjusting claw 301 is fixedly connected to the connecting rod 302, and the top of the claw clamp 2 is provided with a connecting groove 3021, into which the connecting rod 302 is inserted.

[0029] Specifically, such as Figure 3 As shown, the claw clamp 2 is rotatably connected to a shaft 3041, and a limiting plate 303 is fixedly connected to the bottom of the shaft 3041. A limiting groove 3031 is provided on the side wall of the connecting rod 302, and the limiting plate 303 is engaged inside the limiting groove 3031. By rotating the rotating rod 305 and the worm gear 306, the worm gear 306 will drive the worm wheel 304 and the limiting plate 303 to rotate. At this time, the limiting plate 303 will be engaged in the limiting groove 3031 of the connecting rod 302 to fix the adjusting claw 301.

[0030] A rotating rod 305 runs through the side wall of the claw 2. A worm gear 306 is fixedly connected to the end of the rotating rod 305. The worm gear 306 is rotatably connected inside the claw 2. A worm wheel 304 is fixedly connected to the top of the shaft 3041. The worm wheel 304 and the worm gear 306 mesh with each other. By rotating the rotating rod 305 and the worm gear 306 in the opposite direction, the worm gear 306 can drive the worm wheel 304 and the limiting plate 303 to rotate in the opposite direction until the limiting plate 303 rotates out of the limiting groove 3031 on the connecting rod 302. Then the adjusting claw 301 can be disassembled upwards.

[0031] The side wall of the adjusting claw 301 is provided with a flexible pad 307, which improves the tightness of the adjusting claw 301 when clamping the workpiece and increases its clamping stability.

[0032] Specifically, such as Figure 4 As shown, a lifting assembly 4 is provided at the bottom of the jaw 2. The lifting assembly 4 is used to move the jaw 2. The lifting assembly 4 includes a hydraulic rod 401, which is located above the chuck body 1 and is fixedly connected to the bottom of the jaw 2. By setting the lifting assembly 4 between the base 201 and the jaw 2, the jaw 2 and the adjusting jaw 301 can be moved upward by driving the hydraulic rod 401 on the lifting assembly 4. This facilitates synchronous movement and adjustment according to the height of the workpiece, so that the jaw 2 is clamped in the middle of the workpiece, avoiding the situation where the center of gravity is low and unstable when clamping taller workpieces.

[0033] A stabilizing rod 402 is fixedly connected to the bottom of the claw 2, and a stabilizing groove 4021 is provided on the top of the base 201. The stabilizing rod 402 is slidably connected inside the stabilizing groove 4021, and the hydraulic rod 401 is fixedly connected between the claw 2 and the base 201. The stability of the claw 2 when it moves is improved by the stabilizing rod 402.

[0034] The specific steps of this solution are as follows: First, based on the shape of the workpiece, the connecting rod 302 at the bottom of the adjusting claw 301 with a matching shape is inserted into the connecting groove 3021 of the claw clamp 2. By rotating the rotating rod 305 and the worm gear 306, the worm gear 306 will drive the worm wheel 304 and the limiting plate 303 to rotate. At this time, the limiting plate 303 will be locked into the limiting groove 3031 of the connecting rod 302 to fix the adjusting claw 301. Next, based on the height of the workpiece, the driving hydraulic rod 401 drives the claw clamp 2 and the adjusting claw 301 to move upward until the adjusting claw 301 moves to the middle position of the workpiece. Finally, the workpiece is placed on the chuck body 1, and the three sets of adjusting claws 301 are driven to clamp the workpiece synchronously.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0036] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A three-jaw chuck device, comprising a chuck body (1) and jaws (2) disposed on the chuck body (1); characterized in that, Also includes; An adjustment component (3) is disposed on the top of the jaw clamp (2). The adjustment component (3) is used to adjust the jaw clamp (2). The adjustment component (3) includes an adjustment jaw (301), which is movably inserted into the top of the jaw clamp (2). A limiting plate (303) is rotatably connected inside the chuck body (1). The limiting plate (303) is snapped below the adjustment jaw (301). A lifting assembly (4) is provided at the bottom of the jaw (2). The lifting assembly (4) is used to move the jaw (2). The lifting assembly (4) includes a hydraulic rod (401). The hydraulic rod (401) is provided above the chuck body (1) and is fixedly connected to the bottom of the jaw (2).

2. The three-jaw chuck device according to claim 1, characterized in that, The chuck body (1) is slidably connected to a base (201) on its top, and the claw (2) is inserted into the top of the base (201), with the three sets of bases (201) and claws (2) symmetrically distributed.

3. The three-jaw chuck device according to claim 2, characterized in that, The adjustment assembly (3) also includes a connecting rod (302), which is fixedly connected to the bottom of the adjustment claw (301). The top of the claw clamp (2) is provided with a connecting groove (3021), and the connecting rod (302) is inserted into the inside of the connecting groove (3021).

4. The three-jaw chuck device according to claim 3, characterized in that, The claw clamp (2) is rotatably connected to a shaft (3041), and the limiting plate (303) is fixedly connected to the bottom of the shaft (3041). The side wall of the connecting rod (302) is provided with a limiting groove (3031), and the limiting plate (303) is snapped into the inside of the limiting groove (3031).

5. The three-jaw chuck device according to claim 4, characterized in that, A rotating rod (305) runs through the side wall of the claw (2), and a worm gear (306) is fixedly connected to the end of the rotating rod (305). The worm gear (306) is rotatably connected inside the claw (2).

6. The three-jaw chuck device according to claim 5, characterized in that, A worm gear (304) is fixedly connected to the top of the shaft (3041), and the worm gear (304) meshes with the worm (306).

7. The three-jaw chuck device according to claim 6, characterized in that, The sidewall of the adjusting claw (301) is provided with a flexible pad (307).

8. The three-jaw chuck device according to claim 2, characterized in that, The lifting assembly (4) also includes a stabilizing rod (402), which is fixedly connected to the bottom of the claw (2). The top of the base (201) is provided with a stabilizing groove (4021), and the stabilizing rod (402) is slidably connected inside the stabilizing groove (4021). The hydraulic rod (401) is fixedly connected between the claw (2) and the base (201).

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