Manual self-centering three-jaw chuck device

Abstract

The utility model discloses a manual type self-centering three-jaw chuck device, which relates to the field of machining equipment, and comprises a chuck main body, a rotating disk and a pressing plate piece, the outer end face of the chuck main body is provided with a rotating disk mounting groove, and the outer end face of the rotating disk is uniformly provided with three arc-shaped grooves in a surrounding manner; three clamping jaws corresponding to the three arc-shaped grooves are movably arranged on the pressing plate piece; the rotating disc is installed in the rotating disc installation groove, a manual adjusting screw rod is arranged on the annular face of the rotating disc, the pressing plate piece is connected to the outer end face of the chuck body, the rotating disc is buckled in the rotating disc installation groove, pin shafts inserted into the arc-shaped grooves are arranged on the three clamping jaws respectively, and the rotating disc is rotated through the manual adjusting screw rod. The rotating disc synchronously controls the three clamping jaws to clamp the workpiece on the pressing plate piece or loosen the workpiece through the three arc-shaped grooves.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing equipment, in particular to a manual self-centering three-jaw chuck device. Background Art

[0002] In the automation process of the machinery manufacturing industry, the standardization and automation of fixtures are in a very important position. The design, manufacture, installation and replacement of fixtures occupy a lot of human resources and time, which greatly limits the development of automated production and directly affects the production progress and processing quality of products. Failure to solve these problems has led to the emergence of many technologies, among which the shared clamping of various sizes of pipe parts has always been a difficult problem in assembly design. Simple manual self-centering chucks can achieve multi-size pipe and shaft clamping and reduce the time to replace ordinary clamps. Currently, commonly used clamps can only locate a single size, which is very inconvenient when encountering multiple sizes. The three-jaw chucks used at home and abroad have problems such as high price, complex structure, and inconvenient maintenance, and are not very suitable for assembly fixtures. These directly affect the smooth progress of automated production and seriously affect the economic benefits of the machinery manufacturing industry.

[0003] The document is CN117139663A, which discloses a three-jaw chuck, including: a housing, a rotating groove is provided in the housing, and a plurality of slide grooves are provided on the top of the rotating groove; a ring gear, the ring gear is rotatably installed in the rotating groove, and a spiral ring is fixedly installed on the top of the ring gear; a plurality of latch plates, the plurality of latch plates are respectively slidably installed in the plurality of slide grooves, and the plurality of latch plates are meshed with the spiral ring; a plurality of bevel gears, the plurality of bevel gears are meshed and installed at the bottom of the ring gear and located in the rotating groove, a connecting rod is fixedly installed on one side of the bevel gear, and one end of the connecting rod passes through the inner wall of the rotating groove and extends to the outside; a power assembly, the power assembly is located on the housing, and is used to drive the connecting rod to rotate. The three-jaw chuck has a complex structure, and the clamping operation is inconvenient, and the clamping safety problem is prone to occur. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a manual self-centering three-jaw chuck device to solve the problems of shared clamping, high price, cumbersome operation, complex structure and inconvenient maintenance of clamping devices for multi-size pipe shaft products.

[0005] The utility model is realized by the following technical solutions:

[0006] A manual self-centering three-jaw chuck device comprises a chuck body, a rotating disk and a pressure plate, wherein the outer end surface of the chuck body is provided with a rotating disk mounting groove, the outer end surface of the rotating disk is provided with three arc grooves evenly distributed around, and the pressure plate is provided with three clamping claws corresponding to the three arc grooves;

[0007] The rotating disk is installed in the rotating disk mounting groove, and a manual adjustment screw is provided on the annular surface of the rotating disk. The pressure plate is connected to the outer end surface of the chuck body, and the rotating disk is buckled in the rotating disk mounting groove. The three claws are respectively provided with pins inserted in the arc grooves. The rotating disk is rotated by the manual adjustment screw, and the rotating disk then synchronously controls the three claws through the three arc grooves to clamp the workpiece on the pressure plate, or release the workpiece.

[0008] Furthermore, a manual adjustment screw mounting opening is provided on one side of the rotating disk mounting groove, and the manual adjustment screw is screwed onto the rotating disk through the manual adjustment screw mounting opening.

[0009] Furthermore, one end of the manual adjustment screw is a screw part, and the other end is a knurled handle part. By rotating the manual adjustment screw, the lower end surface of the knurled handle part is pressed against the chuck body and the pressure plate, thereby locking the rotation of the rotating disk.

[0010] Furthermore, a stopper is provided at the outer end of the rotating disk, and a matching stopper groove is provided at the inner end of the corresponding pressure plate.

[0011] Furthermore, three T-shaped grooves are radially arranged on the outer end surface of the pressure plate, and the clamping claws are slidably installed in the T-shaped grooves through T-shaped heads.

[0012] Furthermore, the clamping claw is an L-structure, and the pin shaft is inserted on the T-shaped head.

[0013] Furthermore, the chuck body, the rotating disk and the middle of the pressure plate are all provided with through holes for inserting the workpiece.

[0014] Furthermore, the pressing plate is connected to the chuck body by screws.

[0015] Furthermore, one end of the manual adjustment screw is a screw part, and the other end is a connector. By rotating the manual adjustment screw, the lower end surface of the connector is pressed against the chuck body and the pressure plate, thereby locking the rotation of the rotating disk.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] 1. The utility model is a manual self-centering three-jaw chuck device, which rotates a rotating disk by manually adjusting a screw rod. The rotating disk then synchronously controls three clamping jaws through three arc grooves to clamp or release the workpiece on a pressure plate. Since the three clamping jaws have the same structure, the structure for controlling the three clamping jaws is also the same, thereby realizing synchronous control of the three clamping jaws and firmly clamping the workpiece.

[0018] 2. The utility model is a manual self-centering three-jaw chuck device, which can be used as a fixed clamping mechanism to clamp workpieces, and can also be used as a chuck in conjunction with a machine tool. It is easy to operate, has a simple structure, and is firm in clamping. It solves the problems of shared clamping, high prices, troublesome operation, complex structure, and inconvenient maintenance of clamping devices for multi-size pipe shaft products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0020] Figure 1 The utility model is a structural schematic diagram of a manual self-centering three-jaw chuck device.

[0021] Figure 2 The utility model is a schematic diagram of the structure of a manual self-centering three-jaw chuck device in use state.

[0022] Figure 3 It is a structural schematic diagram of the chuck main body of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the rotating disk of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the pressing plate of the utility model.

[0025] Figure 6 It is a structural schematic diagram of the clamping claw of the utility model.

[0026] Figure 7 This is a structural schematic diagram of a fourth embodiment of the manual adjustment screw of the utility model.

[0027] Marks and corresponding parts names in the attached drawings:

[0028] 1-chuck body, 2-rotating disk, 3-pressure plate, 4-rotating disk mounting groove, 5-arc groove, 6-claw, 7-manual adjustment screw, 8-pin shaft, 9-screw part, 10-knurled handle part, 11-stop, 12-T-slot, 13-T-head, 14-workpiece insertion through hole, 15-connecting head, 16-manual adjustment screw mounting port. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0032] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0033] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] Example 1

[0036] like Figure 1-7 As shown, the utility model is a manual self-centering three-jaw chuck device, comprising a chuck body 1, a rotating disk 2 and a pressure plate 3. The chuck body 1 can be used as a fixed clamping table, and can also be connected to the rotating shaft of a machine tool and used as a chuck. Figure 3 As shown, the outer end surface of the chuck body 1 is provided with a rotating disk mounting groove 4 for mounting the rotating disk 2, and the rotating disk mounting groove 4 is a φ80mm circular groove structure. The outer end surface of the rotating disk 2 is evenly and circumferentially provided with three arc grooves 5, and the arc groove 5 is on the rotating disk 2, with one end on the inner surface of the arc groove 5 and the other end on the outer surface of the arc groove 5, so that the arc groove 5 guides the pin 8, and the pressure plate 3 is provided with three claws 6 corresponding to the three arc grooves 5. The claws 6 can move radially along the end surface of the pressure plate 3.

[0037] The rotating disk 2 is installed in the rotating disk installation groove 4, and a manual adjustment screw 7 is provided on the annular surface of the rotating disk 2. The pressing plate 3 is connected to the outer end surface of the chuck body 1, and the rotating disk 2 is buckled into the rotating disk installation groove 4. The three claws 6 are respectively provided with pins 8 inserted in the arc groove 5. Figure 6 As shown, a through hole is provided in the clamping claw 6, and the pin shaft 8 is passed through the through hole. The end surface of the pin shaft 8 protruding from the T-shaped head 13 cooperates with the arc groove 5. The protruding length of the pin shaft 8 is adjusted as needed, and the rotating disk 2 is rotated by manually adjusting the screw rod 7. The rotating disk 2 then synchronously controls the three clamping claws 6 through the three arc grooves 5 to clamp the workpiece on the pressure plate 3, or release the workpiece.

[0038] A manual adjustment screw mounting opening 16 is provided on one side of the rotating disk mounting groove 4 , and the manual adjustment screw mounting opening 16 provides a movable space for the manual adjustment screw 7 , and the manual adjustment screw 7 is screwed onto the rotating disk 2 through the manual adjustment screw mounting opening 16 .

[0039] The working principle of the manual self-centering three-jaw chuck of the present invention is:

[0040] Put the product into the center of the chuck, turn the manual adjustment screw 7, and the pin 8 will rotate in the arc groove 5, so that the three claws 6 will move linearly along the T-slot at the same time, thereby clamping the product, and then turn the manual adjustment screw 7 to lock it. Figure 1), the manual adjustment screw 7 is assembled with the chuck body 1, the pressure plate 3 is screwed with the chuck body 1 and presses the rotating disk 2, the claw 6 is assembled in the T-slot of the pressure plate 3, the pin 8 is inserted in the claw 6 and protrudes and is limitedly connected in the arc groove 5, the manual adjustment screw 7 is screwed into the rotating disk 2, and the installation is completed. Put the product into the center of the chuck, rotate the rotating disk 2, and the pin 8 rotates in the arc groove, so that the three claws move linearly along the T-slot at the same time, thereby clamping the product, and then tighten the knurled thumb screw to lock it.

[0041] The utility model discloses a manual self-centering three-jaw chuck device, which rotates a rotating disk by manually adjusting a screw rod, and the rotating disk then synchronously controls three clamping jaws to clamp or release the workpiece on a pressure plate through three arc grooves. Since the three clamping jaws have the same structure, the structure for controlling the three clamping jaws is also the same, thereby realizing synchronous control of the three clamping jaws and firmly clamping the workpiece. It can be used as a fixed clamping mechanism to clamp the workpiece, which is easy to operate, simple in structure, and firmly clamped, and solves the problems of shared clamping, high price, troublesome operation, complex structure, and inconvenient maintenance of clamping devices for multi-size pipe shaft products.

[0042] Example 2

[0043] like Figure 1 As shown, the utility model is a manual self-centering three-jaw chuck device. On the basis of the above embodiment, one end of the manual adjustment screw 7 is a screw part 9, and the other end is a knurled handle part 10. By rotating the manual adjustment screw 7, the lower end surface of the knurled handle part 10 is squeezed onto the chuck body 1 and the pressure plate 3, thereby locking the rotation of the rotating disk 2.

[0044] Example 3

[0045] like Figure 1 As shown, the utility model is a manual self-centering three-jaw chuck device. On the basis of the above embodiment, the outer end of the rotating disk 2 is provided with a stopper 11, and the inner end of the corresponding pressure plate 3 is provided with a matching stopper groove. The stopper 11 and the stopper groove are mainly used to stabilize the installation of the rotating disk 2 and avoid shaking, thereby reducing the vibration of the chuck.

[0046] The outer end surface of the pressing plate 3 is provided with three T-shaped grooves 12 in a radial direction, and the clamping claw 6 is slidably installed in the T-shaped groove 12 through the T-shaped head 13. The clamping claw 6 is an L-shaped structure, and the pin shaft 8 is inserted on the T-shaped head 13.

[0047] The chuck body 1, the rotating disk 2 and the pressing plate 3 are all provided with a workpiece insertion through hole 14 in the middle. Figure 3-5 As shown, the workpiece insertion through hole 14 is a through hole of φ20 mm. The chuck body 1, the rotating disk 2 and the pressing plate 3 are concentrically assembled and installed.

[0048] like Figure 3 As shown, the pressing plate 3 is connected to the chuck body 1 by screws. The groove edge of the rotating disk installation groove 4 is provided with 8 M6 threaded holes for connection with the screws. The pressing plate 3 snaps the rotating disk 2 into the rotating disk installation groove 4 on the chuck body 1, and then connects by screws, so that the rotating disk 2 can only rotate in the rotating disk installation groove 4.

[0049] Example 4

[0050] like Figure 1-7 As shown, the utility model is a manual self-centering three-jaw chuck device, based on the above embodiment, as Figure 7 As shown, one end of the manual adjustment screw 7 is a screw portion 9, and the other end is a connector 15. The connector 15 can be an internal connector or an external connector. By rotating the manual adjustment screw 7, the lower end surface of the connector 15 is pressed against the chuck body 1 and the pressure plate 3, thereby locking the rotation of the rotating disk 2. The manual adjustment screw 7 is controlled to move or rotate by connecting the connector 15 with a wrench to rotate the rotating disk 2 or lock the rotating disk 2. The manual adjustment screw 7 of this embodiment is mainly used to shorten the protruding length of the manual adjustment screw 7, so that when the chuck is rotated, the center of gravity of the chuck is prevented from shifting, resulting in adjustment and affecting the processing accuracy of the workpiece.

[0051] The utility model discloses a manual self-centering three-jaw chuck device. The rotating disk is rotated by manually adjusting the screw rod. The rotating disk then synchronously controls the three clamping jaws to clamp the workpiece on the pressure plate or release the workpiece through three arc grooves. Since the three clamping jaws have the same structure, the structure for controlling the three clamping jaws is also the same, thereby realizing synchronous control of the three clamping jaws and firmly clamping the workpiece. It can be used as a fixed clamping mechanism to clamp the workpiece, and can also be used as a chuck in conjunction with a machine tool. It is easy to operate, has a simple structure, and is firmly clamped. It solves the problems of shared clamping, high price, troublesome operation, complex structure, and inconvenient maintenance of clamping devices for multi-size pipe shaft products.

[0052] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A manual self-centering three-jaw chuck device, comprising a chuck body (1), a rotating disk (2) and a pressure plate (3), characterized in that: The outer end surface of the chuck body (1) is provided with a rotating disk mounting groove (4), the outer end surface of the rotating disk (2) is evenly and circumferentially provided with three arc-shaped grooves (5), and the pressure plate (3) is provided with three claws (6) movably corresponding to the three arc-shaped grooves (5); The rotating disk (2) is installed in the rotating disk installation groove (4), and a manual adjustment screw (7) is provided on the annular surface of the rotating disk (2). The pressure plate component (3) is connected to the outer end surface of the chuck body (1), and the rotating disk (2) is buckled in the rotating disk installation groove (4). The three clamping claws (6) are respectively provided with pin shafts (8) inserted in the arc groove (5). The rotating disk (2) is rotated by the manual adjustment screw (7), and the rotating disk (2) then synchronously controls the three clamping claws (6) through the three arc grooves (5) to clamp the workpiece on the pressure plate component (3), or release the workpiece.

2. A manual self-centering three-jaw chuck device according to claim 1, characterized in that: A manual adjustment screw rod installation opening (16) is provided on one side of the rotating disk installation groove (4), and the manual adjustment screw rod (7) is screwed onto the rotating disk (2) through the manual adjustment screw rod installation opening (16).

3. A manual self-centering three-jaw chuck device according to claim 1, characterized in that: One end of the manual adjustment screw (7) is a screw portion (9), and the other end is a knurled handle portion (10). By rotating the manual adjustment screw (7), the lower end surface of the knurled handle portion (10) is pressed against the chuck body (1) and the pressure plate (3), thereby locking the rotation of the rotating disk (2).

4. A manual self-centering three-jaw chuck device according to claim 1, characterized in that: The outer end of the rotating disk (2) is provided with a stopper (11), and the inner end of the corresponding pressing plate (3) is provided with a matching stopper groove.

5. A manual self-centering three-jaw chuck device according to claim 1, characterized in that: Three T-shaped grooves (12) are radially arranged on the outer end surface of the pressure plate (3), and the clamping claw (6) is slidably installed in the T-shaped groove (12) through the T-shaped head (13).

6. A manual self-centering three-jaw chuck device according to claim 5, characterized in that: The clamping claw (6) is an L-shaped structure, and the pin shaft (8) is inserted into the T-shaped head (13).

7. A manual self-centering three-jaw chuck device according to claim 1, characterized in that: The chuck body (1), the rotating disk (2) and the pressing plate (3) are all provided with a workpiece insertion through hole (14) in the middle.

8. A manual self-centering three-jaw chuck device according to claim 1, characterized in that: The pressing plate member (3) is connected to the chuck body (1) via screws.

9. A manual self-centering three-jaw chuck device according to claim 1, characterized in that: One end of the manual adjustment screw (7) is a screw portion (9) and the other end is a connector (15). By rotating the manual adjustment screw (7), the lower end surface of the connector (15) is pressed against the chuck body (1) and the pressure plate (3), thereby locking the rotation of the rotating disk (2).

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