A large workpiece high-precision positioning and clamping device

Abstract

The utility model discloses a large -scale work piece high accuracy positioning clamping device, including base, and the both sides top of base is equipped with the fixing frame, and the top of base in the inside of fixing frame is equipped with the first guide rail, and both ends of two groups of first guide rail are slidably equipped with the guide block, and the top of two guide blocks of same side is equipped with the moving plate, and be equipped with the moving assembly for driving two moving plates relative movement on the base, when using this large -scale work piece high accuracy positioning clamping device, according to the position of placing plate and the corresponding adjustment of the batten of different length work piece, be convenient for applicable to different length work piece, and the placing plate moves on the second guide rail in the clamping process, and the clamping block of both sides slides on the moving plate of both sides, can according to the different length flexible adjustment of need processing work piece, and the clamping block can be through both sides moving assembly cooperation moving plate and the middle close cooperation placing plate and complete the clamping of work piece.

Description

Technical Field

[0001] This utility model relates to the technical field of high-precision positioning and clamping devices for large workpieces, specifically a high-precision positioning and clamping device for large workpieces. Background Technology

[0002] In modern manufacturing, the requirements for positioning accuracy in the machining and assembly of large workpieces are increasing. These workpieces are widely used in aerospace, shipbuilding, automotive industries, and other fields, and the need for precision, stability, and safety of clamping devices is particularly urgent in CNC machine tools and automated production lines.

[0003] In existing large workpiece processing, the workpiece is placed on the worktable and clamped at both ends by a fixture. During processing, due to the different lengths of the workpieces, the operator needs to frequently disassemble and reassemble the fixture to fix workpieces of different lengths, which is a rather cumbersome operation. Therefore, we propose a high-precision positioning and clamping device for large workpieces to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a high-precision positioning and clamping device for large workpieces, so as to solve the problem mentioned in the background art that the high-precision positioning and clamping device for large workpieces is not convenient to adapt to workpieces of different lengths when used.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision positioning and clamping device for large workpieces, including a base;

[0006] The base has fixed frames at the top of both sides, and a first guide rail is provided on the top of the base inside the fixed frame. Guide blocks are slidably provided at both ends of the two sets of first guide rails. Movable plates are provided at the top of the two guide blocks on the same side. The base is provided with a moving component for driving the two moving plates to move relative to each other. A second guide rail is symmetrically provided on the top of the base between each of the first guide rails. Clamping components are symmetrically and slidably provided on the second guide rails. The base is provided with an adjusting component for adjusting the two sets of clamping components.

[0007] The clamping assembly includes a placement plate, a support rod, clamping blocks, and a connecting rod. There are two sets of placement plates, which are connected by a connecting rod. The bottom of the placement plate is slidably connected to the second guide rail. The two sides of the placement plate are hinged to one end of the support rod. Two sets of clamping blocks are movably provided on the inner side of the movable plate, and the bottom of the clamping blocks is hinged to one end of the support rod.

[0008] As a preferred embodiment of this utility model, a moving groove is provided on the inner side wall of the moving plate, and a slider is slidably provided in the moving groove. The number of sliders is adapted to the number of clamping blocks, and the front end of the slider is connected to the clamping block.

[0009] As a preferred technical solution of this utility model, the moving component includes a mounting base, a bidirectional lead screw, and a connecting sleeve. The mounting base is provided on the front and rear sides of the top of the base, and the bidirectional lead screw is rotatably provided between the two mounting bases. The bidirectional lead screw is symmetrically and threadedly connected to the connecting sleeve, and the connecting sleeve is connected to the moving plate.

[0010] As a preferred embodiment of this utility model, the mounting base is provided with a first motor, and the output end of the first motor is connected to a bidirectional lead screw.

[0011] As a preferred technical solution of this utility model, the adjustment component includes a fixed seat, a rotating shaft, a rotating plate and a connecting plate. The fixed seat is provided at the center of the top of the base. The rotating plate is installed on the top of the fixed seat through the rotating shaft. The connecting plates are provided on both sides of the fixed seat. One end of the connecting plate is hinged to one end of the rotating plate, and the other end of the connecting plate is hinged to the placement plate.

[0012] As a preferred technical solution of this utility model, a second motor is provided at the bottom of the base, and the output end of the second motor is connected to the rotating shaft.

[0013] As a preferred technical solution of this utility model, both the fixing frame and the placement plate are provided with arc-shaped placement grooves, the centers of the multiple arc-shaped placement grooves are located on the same straight line, and the multiple arc-shaped placement grooves have the same diameter.

[0014] Compared with the prior art, the beneficial effects of this utility model are: when using this high-precision positioning and clamping device for large workpieces, the positions of the placement plate and clamping plate are adjusted according to the workpieces of different lengths, making it suitable for workpieces of different lengths. During the clamping process, the placement plate moves on the second guide rail, while the clamping blocks on both sides slide on the moving plates on both sides. It can be flexibly adjusted according to the different lengths of the workpieces to be processed. Moreover, the clamping blocks can be moved towards the center by the moving components on both sides in conjunction with the moving plates to complete the clamping of the workpiece. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the clamping component structure of this utility model;

[0017] Figure 3 This is a schematic diagram of a half-section of the present invention;

[0018] Figure 4 This is a schematic diagram of the main structure of this utility model.

[0019] In the diagram: 1. Base; 2. Fixing frame; 3. First guide rail; 4. Guide block; 5. Moving plate; 6. Moving assembly; 601. Mounting seat; 602. Two-way lead screw; 603. Connecting sleeve; 7. Second guide rail; 8. Clamping assembly; 801. Placement plate; 802. Support rod; 803. Clamping block; 804. Connecting rod; 9. Adjusting assembly; 901. Fixing seat; 902. Rotating shaft; 903. Rotating plate; 904. Connecting plate; 10. Moving groove; 11. Slider. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a high-precision positioning and clamping device for large workpieces, including a base 1;

[0022] The base 1 has fixed frames 2 on both sides at the top. Both the fixed frames 2 and the placement plate 801 have arc-shaped placement grooves. The centers of the multiple arc-shaped placement grooves are located on the same straight line, and the multiple arc-shaped placement grooves have the same diameter. The top of the base 1 inside the fixed frames 2 has a first guide rail 3. Guide blocks 4 are slidably provided at both ends of the two sets of first guide rails 3. The top of the two guide blocks 4 on the same side has a movable plate 5. The inner side wall of the movable plate 5 has a movable groove 10. The movable groove 10 has a slider 11 slidably provided. The number of sliders 11 is adapted to the number of clamping blocks 803, and the front end of the slider 11 is connected to the clamping block 803. The base 1 has a movable assembly 6 for driving the two movable plates 5 to move relative to each other. The movable assembly 6 includes a mounting base 601, a bidirectional lead screw 602, and a connecting sleeve 603. Mounting bases 601 are provided on the front and rear sides of the top of the base 1. A bidirectional lead screw 602 is rotatably provided between the two mounting bases 601. The bidirectional lead screw 602 is symmetrically provided. A threaded connection is provided with a connecting sleeve 603, which is connected to a movable plate 5. A first motor is provided on the mounting base 601, and the output end of the first motor is connected to a bidirectional lead screw 602. A second guide rail 7 is symmetrically provided on the top of the base 1 between each first guide rail 3. A clamping assembly 8 is symmetrically and slidably provided on the second guide rail 7. An adjustment assembly 9 is provided on the base 1 to drive the two sets of clamping assemblies 8 to adjust. The adjustment assembly 9 includes a fixed base 901, a rotating shaft 902, a rotating plate 903, and a connecting plate 904. A fixed base 901 is provided at the center of the top of the base 1. A rotating plate 903 is installed on the top of the fixed base 901 through the rotating shaft 902. A connecting plate 904 is provided on both sides of the fixed base 901. One end of the connecting plate 904 is hinged to one end of the rotating plate 903, and the other end of the connecting plate 904 is hinged to the placement plate 801. A second motor is provided at the bottom of the base 1, and the output end of the second motor is connected to the rotating shaft 902.

[0023] During use, the position of the fixture needs to be adjusted to accommodate different workpieces due to varying workpiece lengths. At this time, the rotating shaft 902 driven by the second motor rotates the rotating plate 903, causing the connecting plate 904 to be adjusted at both ends of the rotating plate 903 via hinge shafts. The connecting plate 904 pulls the placement plates 801 on both sides to slide above the second guide rail 7. Simultaneously, the placement plates 801 move the support rod 802 via the hinge shaft, causing the support rod 802 to pull the clamping blocks 803 on both sides to slide inside the moving groove 10 via the slider 11. This allows the positions of the clamping blocks 803 and the placement plate 801 to be adjusted synchronously, thereby adjusting the position of the placement plate 801 to accommodate workpieces of different lengths.

[0024] The clamping assembly 8 includes a placement plate 801, a support rod 802, a clamping block 803, and a connecting rod 804. The placement plate 801 is provided in two sets, and the two sets of placement plates 801 are connected by the connecting rod 804. The bottom of the placement plate 801 is slidably connected to the second guide rail 7. The two sides of the placement plate 801 are hinged to one end of the support rod 802. Two sets of clamping blocks 803 are movably provided on the inner side of the movable plate 5. The bottom of the clamping block 803 is hinged to one end of the support rod 802.

[0025] The workpiece is placed on the placement plate 801. When the workpiece is long, both ends can be supported by the fixed frame 2. At this time, the first motor drives the bidirectional lead screw 602 to rotate. The bidirectional lead screw 602 drives the connecting sleeves 603 on both sides to drive the moving plate 5 to slide on the first guide rail 3 through the guide block 4. The moving plates 5 on both sides move towards the middle position and clamp the workpiece surface through multiple sets of clamping blocks 803 on the moving plate 5. At the same time as the clamping blocks 803 move towards the center position, the two ends of the support rods 802 on both sides are adjusted synchronously through the hinge shaft.

[0026] Working Principle: When using a high-precision positioning and clamping device for large workpieces, the position of the clamp needs to be adjusted to accommodate different workpiece lengths. The second motor drives the rotating shaft 902 to rotate the rotating plate 903. This causes the connecting plate 904 to be adjusted via hinge shafts at both ends of the rotating plate 903. Simultaneously, the connecting plate 904 pulls the placement plates 801 on both sides to slide above the second guide rail 7. At the same time, the placement plates 801 move the support rod 802 via the hinge shafts, causing the support rod 802 to pull the clamping blocks 803 on both sides to slide within the moving groove 10 via the slider 11. This synchronizes the adjustment of the positions of the clamping blocks 803 and the placement plate 801, thus positioning the placement plate 801... The position is adjusted to accommodate workpieces of different lengths. The workpiece is placed on the placement plate 801. When the workpiece is long, both ends can be supported by the fixing frame 2. At this time, the first motor drives the bidirectional lead screw 602 to rotate. The bidirectional lead screw 602 drives the connecting sleeves 603 on both sides to drive the moving plate 5 to slide on the first guide rail 3 through the guide block 4. The two moving plates 5 move towards the middle position and clamp the workpiece surface through multiple sets of clamping blocks 803 on the moving plate 5. At the same time as the clamping blocks 803 move towards the center position, the two ends of the support rods 802 on both sides are adjusted synchronously through the hinge shaft, thereby completing a series of operations. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-precision positioning and clamping device for large workpieces, comprising a base (1); Its features are: The base (1) has a fixed frame (2) at the top of both sides. The base (1) inside the fixed frame (2) has a first guide rail (3) at the top. Both ends of the two sets of first guide rails (3) are slidably provided with guide blocks (4). The top of the two guide blocks (4) on the same side is provided with a moving plate (5). The base (1) is provided with a moving component (6) for driving the two moving plates (5) to move relative to each other. The top of the base (1) between the first guide rails (3) is symmetrically provided with a second guide rail (7). The second guide rail (7) is symmetrically and slidably provided with a clamping component (8). The base (1) is provided with an adjusting component (9) for driving the two sets of clamping components (8) to adjust. The clamping assembly (8) includes a placement plate (801), a support rod (802), a clamping block (803), and a connecting rod (804). The placement plate (801) is provided in two sets, and the two sets of placement plates (801) are connected by the connecting rod (804). The bottom of the placement plate (801) is slidably connected to the second guide rail (7). The two sides of the placement plate (801) are hinged to one end of the support rod (802). The inner side of the movable plate (5) is provided with two sets of clamping blocks (803), and the bottom of the clamping block (803) is hinged to one end of the support rod (802).

2. The high-precision positioning and clamping device for large workpieces according to claim 1, characterized in that, The inner wall of the movable plate (5) is provided with a movable groove (10), and a slider (11) is slidably provided in the movable groove (10). The number of sliders (11) is adapted to the number of clamps (803), and the front end of the slider (11) is connected to the clamp (803).

3. The high-precision positioning and clamping device for large workpieces according to claim 1, characterized in that, The movable component (6) includes a mounting base (601), a bidirectional lead screw (602), and a connecting sleeve (603). The mounting base (1) is provided on the front and rear sides of the top. A bidirectional lead screw (602) is rotatably provided between the two mounting bases (601). The bidirectional lead screw (602) is symmetrically and threadedly connected to the connecting sleeve (603). The connecting sleeve (603) is connected to the movable plate (5).

4. The high-precision positioning and clamping device for large workpieces according to claim 3, characterized in that, The mounting base (601) is equipped with a first motor, and the output end of the first motor is connected to a bidirectional lead screw (602).

5. The high-precision positioning and clamping device for large workpieces according to claim 1, characterized in that, The adjustment assembly (9) includes a fixed base (901), a rotating shaft (902), a rotating plate (903), and a connecting plate (904). The fixed base (901) is provided at the center of the top of the base (1). The rotating plate (903) is mounted on the top of the fixed base (901) through the rotating shaft (902). The connecting plates (904) are provided on both sides of the fixed base (901). One end of the connecting plate (904) is hinged to one end of the rotating plate (903), and the other end of the connecting plate (904) is hinged to the placement plate (801).

6. The high-precision positioning and clamping device for large workpieces according to claim 5, characterized in that, The base (1) has a second motor at its bottom, and the output end of the second motor is connected to the rotating shaft (902).

7. The high-precision positioning and clamping device for large workpieces according to claim 1, characterized in that, Both the fixing frame (2) and the placement plate (801) are provided with arc-shaped placement grooves, the centers of multiple arc-shaped placement grooves are located on the same straight line, and the diameters of multiple arc-shaped placement grooves are the same.

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