Three-jaw chuck with precise positioning function

Abstract

The utility model discloses a precise positioning three-jaw chuck which comprises a chuck seat, a positioning hole is formed in the upper surface of the chuck seat, sliding grooves are formed in the inner ring of the positioning hole, the inner wall of each sliding groove is connected with a sliding block in a sliding mode, threaded grooves are formed in the side faces, away from each other, of the sliding blocks, and the threaded grooves are matched with the threaded grooves. A plurality of fixing covers are fixedly embedded in the outer surface of the chuck seat, a driving motor is fixedly mounted on the inner side wall of each fixing cover, a transmission screw is fixedly mounted at the output end of each driving motor, and the outer surface of each transmission screw is in threaded connection with the inner wall of each threaded groove; the upper surface of each sliding block is fixedly connected with a connecting block. According to the precise positioning three-jaw chuck, the multiple clamping blocks can be driven to quickly lock and fix a workpiece in the positioning hole, the effect of automatically positioning the workpiece is achieved, the flexibility of workpiece positioning operation is improved, and the positioning speed of the workpiece is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to three claw chuck field especially a kind of three claw chuck of precision positioning. BACKGROUND

[0002] Three claw chuck is the radial movement using three movable clamping claws evenly distributed on chuck body, clamps and positions workpiece, three claw chuck is an accessory widely used in the field of mechanical processing, mainly used to clamp circular or regular polygon workpiece, to ensure the stability and accuracy of workpiece during processing.

[0003] At present, after three claw chuck is installed above workbench, it is usually manually operated wrench to position chuck, it is difficult to make chuck automatically position workpiece, so that it is cumbersome to operate when positioning workpiece, reduce the positioning speed of workpiece, therefore, we provide a kind of three claw chuck of precision positioning to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model is to provide a kind of three claw chuck of precision positioning to solve the problems presented in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of three claw chuck of precision positioning, including chuck seat, the upper surface of the chuck seat is equipped with positioning hole, the inner circle of the positioning hole is equipped with sliding slot, the inner wall of each sliding slot is slidably connected with sliding block, the side face of each sliding block away from each other is equipped with thread groove, the outer surface of the chuck seat is fixedly embedded with a plurality of fixed cover, the inner side wall of each fixed cover is fixedly installed with drive motor, the output end of each drive motor is fixedly installed with transmission screw rod, the outer surface of each transmission screw rod is respectively threadedly connected with the inner wall of each thread groove, the upper surface of each sliding block is fixedly connected with connecting block, the upper surface of each connecting block is fixedly connected with clamping block.

[0007] In further embodiments, the top of each sliding slot is equipped with sliding hole, the outer surface of each connecting block is slidably connected with the inner wall of each sliding hole.

[0008] In further embodiments, the side face of each clamping block away from each other is equipped with sliding port, the upper surface of each fixed cover is fixedly connected with L-shaped slide plate, the end of each L-shaped slide plate close to each other respectively extends to the inside of each sliding port, the outer surface of each L-shaped slide plate is slidably connected with the inner wall of each sliding port.

[0009] In further embodiments, the outer surface of the chuck seat is fixedly connected with mounting disc, the bottom surface of the mounting disc is equipped with a plurality of mounting holes.

[0010] In further embodiments, the inner wall of each of the fixed cover is fixedly connected with a bearing seat, and the inner ring of each of the bearing seat is fixedly connected with the outer surface of each transmission screw.

[0011] In further embodiments, the bottom surface of each of the fixed cover is fixedly connected with a support plate, and the bottom end of each of the support plate is fixedly connected with the upper surface of the mounting disc.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The three sliding blocks and the three transmission screws can be installed through the three sliding grooves of the chuck seat, the three transmission screws are driven to rotate in the three screw grooves through the driving motor arranged in the three fixed covers, the sliding blocks are caused to slide on the surface of the transmission screw, the three sliding blocks are caused to approach each other, the three connecting blocks are caused to cooperate, the workpieces in the positioning holes are caused to be quickly locked and fixed by the plurality of clamping blocks, the effect of automatically positioning the workpieces is achieved, the flexibility of the workpiece positioning operation is improved, and the positioning speed of the workpieces is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective structural schematic view of the front view of the precision positioning three-jaw chuck.

[0015] Figure 2 It is a sectional view of the top view of the chuck seat of the precision positioning three-jaw chuck.

[0016] Figure 3 It is a sectional view of the front view of the precision positioning three-jaw chuck.

[0017] Figure 4 It is a sectional view of the front view of the precision positioning three-jaw chuck.

[0018] In the figure: 1, chuck seat; 2, positioning hole; 3, sliding groove; 4, sliding block; 5, fixed cover; 6, driving motor; 7, bearing seat; 8, screw groove; 9, transmission screw; 10, connecting block; 11, clamping block; 12, sliding port; 13, L-shaped sliding plate; 14, sliding hole; 15, mounting disc; 16, mounting hole; 17, support plate. DETAILED DESCRIPTION

[0019] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0020] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] Please refer to Figures 1-4The utility model discloses a kind of three-jaw chuck of precision positioning, including chuck seat 1, the upper surface of chuck seat 1 is set with positioning hole 2, the inner circle of positioning hole 2 is set with sliding slot 3, the inner wall of each sliding slot 3 is slidably connected with sliding block 4, the side face of each sliding block 4 mutually away is set with thread groove 8, the outer surface of chuck seat 1 is fixedly embedded with multiple fixed cover 5, the inner side wall of each fixed cover 5 is fixedly installed with driving motor 6, the output end of each driving motor 6 is fixedly installed with transmission screw 9, the outer surface of each transmission screw 9 is respectively threadedly connected with the inner wall of each thread groove 8, the upper surface of each sliding block 4 is fixedly connected with connecting block 10, the upper surface of each connecting block 10 is fixedly connected with clamping block 11, by the rotation cooperation of driving motor 6, transmission screw 9 and thread groove 8, sliding block 4 can be slid on the surface of transmission screw 9, and power is also provided for the movement of connecting block 10 and clamping block 11 simultaneously.

[0023] In further embodiments, the top end of each sliding slot 3 is set with sliding hole 14, the outer surface of each connecting block 10 is slidably connected with the inner wall of each sliding hole 14, the side face of each clamping block 11 mutually away is set with sliding port 12, the upper surface of each fixed cover 5 is fixedly connected with L-shaped sliding plate 13, the end of each L-shaped sliding plate 13 mutually close is extended to the inside of each sliding port 12 respectively, the outer surface of each L-shaped sliding plate 13 is slidably connected with the inner wall of each sliding port 12, by the setting of sliding hole 14, connecting block 10 can slide, ensure the stability when clamping block 11 slides, by the setting of sliding port 12 and L-shaped sliding plate 13, clamping block 11 can move more stably, and workpiece positioning clamping will be more firm.

[0024] In further embodiments, the outer surface of chuck seat 1 is fixedly connected with mounting disc 15, the bottom surface of mounting disc 15 is set with multiple mounting holes 16, the inner wall of each fixed cover 5 is fixedly connected with bearing seat 7, the inner circle of each bearing seat 7 is fixedly connected with the outer surface of each transmission screw 9 respectively, the bottom surface of each fixed cover 5 is fixedly connected with support plate 17, the bottom end of each support plate 17 is fixedly connected with the upper surface of mounting disc 15, by the setting of mounting disc 15 and mounting hole 16, chuck seat 1 can be conveniently installed and fixed, by the setting of support plate 17, the effect of supporting fixed cover 5 is played, fixed cover 5 will be more firm, by the setting of bearing seat 7, transmission screw 9 can be supported, and transmission screw 9 can be more stably rotated.

[0025] The working principle of the utility model is: first, chuck base 1 is installed on the workbench through mounting disc 15 and mounting hole 16, then the workpiece is placed in the inside of positioning hole 2, then the device is connected with external control cabinet, and three drive motors 6 are started to rotate at the same time, which will drive multiple transmission screw rods 9 to rotate in multiple screw grooves 8, then sliding block 4 will slide on the surface of transmission screw rod 9, and connecting block 10 will also drive clamping block 11 to move, which will make multiple clamping blocks 11 quickly lock and fix the workpiece in positioning hole 2, and then the automatic positioning of the workpiece is completed.

[0026] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

[0027] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A precision positioning three jaw chuck, characterized by: The chuck seat (1) is provided with positioning holes (2) on the upper surface, the inner circle of the positioning holes (2) is provided with sliding grooves (3), the inner wall of each sliding groove (3) is slidably connected with a sliding block (4), the side face of each sliding block (4) is provided with a threaded groove (8), the outer surface of the chuck seat (1) is fixedly embedded with a plurality of fixed covers (5), the inner side wall of each fixed cover (5) is fixedly installed with a driving motor (6), the output end of each driving motor (6) is fixedly installed with a transmission screw rod (9), the outer surface of each transmission screw rod (9) is respectively in threaded connection with the inner wall of each threaded groove (8), the upper surface of each sliding block (4) is fixedly connected with a connecting block (10), and the upper surface of each connecting block (10) is fixedly connected with a clamping block (11).

2. A precision positioning three jaw chuck as claimed in claim 1, wherein: The top end of each sliding groove (3) is provided with a sliding hole (14), and the outer surface of each connecting block (10) is slidably connected with the inner wall of each sliding hole (14).

3. A precision positioning three jaw chuck as claimed in claim 1, wherein: The side face of each clamping block (11) is provided with a sliding hole (12), the upper surface of each fixed cover (5) is fixedly connected with an L-shaped sliding plate (13), the end of each L-shaped sliding plate (13) is extended to the inside of each sliding hole (12), and the outer surface of each L-shaped sliding plate (13) is slidably connected with the inner wall of each sliding hole (12).

4. A precision positioning three jaw chuck as claimed in claim 1, wherein: The outer surface of the chuck seat (1) is fixedly connected with a mounting disc (15), and the bottom surface of the mounting disc (15) is provided with a plurality of mounting holes (16).

5. A precision positioning three jaw chuck as claimed in claim 1, wherein: The inner wall of each fixed cover (5) is fixedly connected with a bearing seat (7), and the inner circle of each bearing seat (7) is fixedly connected with the outer surface of each transmission screw rod (9).

6. A precision positioning three jaw chuck as claimed in claim 1, wherein: The bottom surface of each fixed cover (5) is fixedly connected with a supporting plate (17), and the bottom end of each supporting plate (17) is fixedly connected with the upper surface of the mounting disc (15). The bottom surface of each fixed cover (5) is fixedly connected with a supporting plate (17), and the bottom end of each supporting plate (17) is fixedly connected with the upper surface of the mounting disc (15).

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