Fixing device for cutting inner cavity of U-shaped metal piece

Abstract

The utility model discloses a U-shaped metal piece inner cavity cutting machining fixing device, and relates to the technical field of metal machining clamps, the U-shaped metal piece inner cavity cutting machining fixing device comprises a base, a forward and reverse rotation motor A and two side plates A are fixedly installed on the upper surface of the base, the two side plates A are parallel to each other, and the output end of the forward and reverse rotation motor A is fixedly connected with a threaded rod A; a threaded rod A is fixedly installed on the two side plates A, the threaded rod A penetrates through one side plate A and is rotationally connected with the other side plate A, two guide rods A are fixedly installed between the two side plates A and located on the two sides of the threaded rod A, the two guide rods A penetrate through two movable plates A, the two movable plates A are in threaded connection with the threaded rod A, and a bearing platform is fixedly installed on the upper surfaces of the two movable plates A. The device has the advantages that the inner cavity of the U-shaped metal piece is prevented from being deformed due to stress concentration in the cutting process, accurate positioning is achieved through the displacement sensor and the positive and negative rotation motor, and the machining precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal processing fixture technology, specifically to a fixing device for internal cutting of U-shaped metal parts. Background Technology

[0002] The internal cavity cutting of U-shaped metal parts is a common process in metal processing. Its core technology lies in using a fixing device to stably clamp the workpiece and ensure that the cutting tool can accurately machine the internal cavity surface.

[0003] Traditional clamping devices typically apply single-point or unilateral pressure to clamp the workpiece externally. However, due to the special internal cavity structure of U-shaped metal parts, the inner cavity wall is prone to deformation due to stress concentration during the cutting process, leading to defective products. Furthermore, the machining of the inner cavity of U-shaped parts requires precise positioning, but existing devices mostly rely on manual calibration or simple mechanical limits, which are difficult to use for precise positioning and affect machining accuracy. Therefore, a U-shaped metal part internal cavity cutting and machining clamping device is proposed to solve the problems mentioned above. Utility Model Content

[0004] To solve the above-mentioned technical problems, a U-shaped metal part internal cavity cutting and fixing device is provided. This technical solution solves the problem mentioned in the background art that the inner cavity wall of the U-shaped metal part is prone to deformation due to stress concentration during the internal cavity cutting process, resulting in defective products, difficulty in accurate positioning, and affecting the processing accuracy.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A U-shaped metal part internal cavity cutting and fixing device includes a base. A reversible motor A and two side plates A are fixedly installed on the upper surface of the base. The two side plates A are parallel to each other. A threaded rod A is fixedly connected to the output end of the reversible motor A. The end of the threaded rod A away from the reversible motor A passes through one of the side plates A and is rotatably connected to the other side plate A. Two guide rods A are fixedly installed between the two side plates A on both sides of the threaded rod A. Two movable plates A are slidably connected to the outer surfaces of the two guide rods A. The two movable plates A are threadedly connected to the threaded rod A. A support is fixedly installed on the upper surface of the two movable plates A.

[0007] Preferably, a reversible motor B and two side plates B are fixedly installed on the upper surface of the support platform. The two side plates B are parallel to each other. A threaded rod B is fixedly connected to the output end of the reversible motor B. The end of the threaded rod B away from the reversible motor B passes through one of the side plates B and is rotatably connected to the other side plate B. Two guide rods B are fixedly installed between the two side plates B on both sides of the threaded rod B. Two movable plates B are slidably connected to the outer surfaces of the two guide rods B. The two movable plates B are threadedly connected to the threaded rod B. An operating table is fixedly installed on the upper surface of the two movable plates B.

[0008] Preferably, clamping mechanisms are fixedly installed at both ends of the operating table and at the left end.

[0009] Preferably, the clamping mechanism includes a base plate fixedly connected to the outside of the operating table, a vertical plate fixedly connected to the end of the base plate away from the operating table, a top plate fixedly installed on the upper surface of the vertical plate, a hydraulic rod fixedly installed on the lower surface of the top plate, a clamping plate fixedly installed at the output end of the hydraulic rod, a distributed pressure sensor fixedly installed on the lower surface of the clamping plate, and an elastic clamping block fixedly installed on the lower surface of the distributed pressure sensor.

[0010] Preferably, three clamping guide rods are fixedly installed between the top plate and the bottom plate, and the clamping guide rods are slidably connected to the clamping plate.

[0011] Preferably, the upper surface of the operating table has positioning holes located directly below the three clamping plates.

[0012] Preferably, a displacement sensor is provided on the upper surface of the operating table.

[0013] Compared with the prior art, this utility model provides a fixing device for internal cutting of U-shaped metal parts, which has the following advantages:

[0014] This invention achieves automatic calibration of the workpiece by setting up a displacement sensor and a forward and reverse motor. After the U-shaped metal part is placed, the displacement sensor scans the workpiece, identifies the actual size and positional deviation of the U-shaped metal part, and feeds it back to the control system. This triggers two forward and reverse motors to drive the threaded rod in real time to adjust the position of the support platform, so that the workpiece is accurately aligned with the axis of the cutting tool.

[0015] This invention incorporates a hydraulic clamping module. After the U-shaped metal part is placed, the hydraulic rod extends, pushing the clamping plate towards the U-shaped metal part. The elastic clamping block contacts the U-shaped metal part until it is clamped. During the cutting process inside the U-shaped metal part, the clamping force is monitored in real time by distributed pressure sensors. The control system automatically adjusts the hydraulic oil flow according to a preset threshold to control the extension and retraction of the hydraulic rod, ensuring that the clamping force is evenly distributed and avoiding deformation. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is a side view of the present invention;

[0019] Figure 4 This is a 1-1 cross-sectional view of the present invention;

[0020] Figure 5 This is a 2-2 cross-sectional view of the present invention.

[0021] The numbers on the map are:

[0022] 1. Base; 2. Side plate A; 3. Support platform; 4. Side plate B; 5. Operating table; 6. Forward and reverse motor A; 7. Forward and reverse motor B; 8. Clamping mechanism; 801. Clamping guide rod; 802. Hydraulic rod; 803. Clamping plate; 804. Top plate; 805. Vertical plate; 806. Base plate; 807. Distributed pressure sensor; 808. Elastic clamping block; 9. Positioning hole; 10. Displacement sensor; 11. Guide rod A; 12. Threaded rod A; 13. Moving plate A; 14. Guide rod B; 15. Threaded rod B; 16. Moving plate B. Detailed Implementation

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0024] Reference Figures 1-5 As shown, a U-shaped metal part internal cavity cutting and fixing device includes an operating table 5. The upper surface of the operating table 5 is square, and clamping mechanisms 8 are fixedly installed on three sides of the square. The clamping mechanism 8 includes a base plate 806. A vertical plate 805 is fixedly connected to the upper surface of the end of the base plate 806 away from the operating table 5. A top plate 804 is fixedly installed on the upper surface of the vertical plate 805. A hydraulic rod 802 is fixedly installed on the lower surface of the top plate 804. A clamping plate 803 is fixedly installed on the other end of the hydraulic rod 802 away from the top plate 804. Positioning holes 9 are opened directly below the three clamping plates 803 on the upper surface of the operating table 5. When placing the U-shaped metal part, the positioning pin is inserted into the positioning hole 9, and the positioning hole on the U-shaped metal part is aligned with the positioning pin and inserted to complete the placement.

[0025] A forward and reverse motor A6 and two side plates A2 are fixedly installed on the upper surface of the base 1. The two side plates A2 are parallel to each other. A threaded rod A12 is fixedly connected to the output end of the forward and reverse motor A6. The threaded rod A12 passes through one of the side plates A2 and is rotatably connected to the other side plate A2. Two guide rods A11 are fixedly installed between the two side plates A2 on both sides of the threaded rod A12. The two guide rods A11 pass through two movable plates A13. The two movable plates A13 are threadedly connected to the threaded rod A12. A support platform 3 is fixedly installed on the upper surface of the two movable plates A13.

[0026] A reversible motor B7 and two side plates B4 are fixedly installed on the upper surface of the support platform 3. The two side plates B4 are parallel to each other. A threaded rod B15 is fixedly connected to the output end of the reversible motor B7. The threaded rod B15 passes through one of the side plates B4 and is rotatably connected to the other side plate B4. Two guide rods B14 are fixedly installed between the two side plates B4 on both sides of the threaded rod B15. The two guide rods B14 pass through and are slidably connected to two moving plates B16. The two moving plates B16 are threadedly connected to the threaded rod B15. An operating table 5 is fixedly installed on the upper surface of the two moving plates B16. A displacement sensor 10 is set on the upper surface of the operating table 5 below the U-shaped metal part placement area. After the U-shaped metal part is placed, the displacement sensor 10 scans the workpiece, identifies the actual size and position deviation of the U-shaped metal part, and feeds it back to the control system. This triggers the two reversible motors to drive the threaded rod in real time to adjust the position of the support platform so that the U-shaped metal part is accurately aligned with the axis of the cutting tool.

[0027] Three clamping guide rods 801 are fixedly installed between the top plate 804 and the bottom plate 806 and pass through the clamping plate 803. A distributed pressure sensor 807 is fixedly installed on the lower surface of the end of the clamping plate 803 near the center of the operating table 5. An elastic clamping block 808 is fixedly installed on the lower surface of the distributed pressure sensor 807. After the U-shaped metal part is placed, the hydraulic rod 802 is driven to extend. The hydraulic rod 802 pushes the clamping plate 803 to move towards the U-shaped metal part. The elastic clamping block 808 contacts the U-shaped metal part until it is clamped. During the cutting process of the inner cavity of the U-shaped metal part, the clamping force is monitored in real time by the distributed pressure sensor 807. The control system automatically adjusts the hydraulic oil flow according to the preset threshold and controls the extension and retraction of the hydraulic rod 802 to ensure that the clamping force is evenly distributed and avoid deformation.

[0028] Working Principle: In use, the positioning pin is inserted into the positioning hole 9, and the positioning hole on the U-shaped metal part is aligned with the positioning pin to complete the placement. After the U-shaped metal part is placed, the hydraulic rod 802 extends, pushing the clamping plate 803 towards the U-shaped metal part. The elastic clamping block 808 contacts the U-shaped metal part until it is clamped. The displacement sensor 10 scans the workpiece, identifies the actual size and positional deviation of the U-shaped metal part, and feeds this information back to the control system. This triggers two forward and reverse motors to drive the threaded rod in real time to adjust the position of the support platform, ensuring the U-shaped metal part is precisely aligned with the cutting tool axis. During the cutting process inside the U-shaped metal part, the clamping force is monitored in real time by the distributed pressure sensor 807. The control system automatically adjusts the hydraulic oil flow according to a preset threshold, controlling the extension and retraction of the hydraulic rod 802 to ensure uniform distribution of clamping force and prevent deformation.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fixing device for cutting the inner cavity of a U-shaped metal piece, characterized in that, The device includes a base (1), on the upper surface of which a reversible motor A (6) and two side plates A (2) are fixedly mounted. The two side plates A (2) are parallel to each other. The output end of the reversible motor A (6) is fixedly connected to a threaded rod A (12). The end of the threaded rod A (12) away from the reversible motor A (6) passes through one of the side plates A (2) and is rotatably connected to the other side plate A (2). Two guide rods A (11) are fixedly mounted between the two side plates A (2) on both sides of the threaded rod A (12). Two movable plates A (13) are slidably connected to the outer surfaces of the two guide rods A (11). The two movable plates A (13) are threadedly connected to the threaded rod A (12). A support platform (3) is fixedly mounted on the upper surface of the two movable plates A (13).

2. The device according to claim 1, wherein: A reversible motor B (7) and two side plates B (4) are fixedly installed on the upper surface of the support platform (3). The two side plates B (4) are parallel to each other. A threaded rod B (15) is fixedly connected to the output end of the reversible motor B (7). The end of the threaded rod B (15) away from the reversible motor B (7) passes through one of the side plates B (4) and is rotatably connected to the other side plate B (4). Two guide rods B (14) are fixedly installed between the two side plates B (4) on both sides of the threaded rod B (15). Two movable plates B (16) are slidably connected to the outer surfaces of the two guide rods B (14). The two movable plates B (16) are threadedly connected to the threaded rod B (15). An operating table (5) is fixedly installed on the upper surface of the two movable plates B (16).

3. The device according to claim 2, wherein: The operating table (5) is fixedly equipped with clamping mechanisms (8) at both ends and the left end.

4. The device according to claim 3, wherein: The clamping mechanism (8) includes a base plate (806) fixedly connected to the outside of the operating table (5). A vertical plate (805) is fixedly connected to one end of the base plate (806) away from the operating table (5). A top plate (804) is fixedly installed on the upper surface of the vertical plate (805). A hydraulic rod (802) is fixedly installed on the lower surface of the top plate (804). A clamping plate (803) is fixedly installed at the output end of the hydraulic rod (802). A distributed pressure sensor (807) is fixedly installed on the lower surface of the clamping plate (803). An elastic clamping block (808) is fixedly installed on the lower surface of the distributed pressure sensor (807).

5. The device according to claim 4, wherein: Three clamp guide rods (801) are fixedly installed between the top plate (804) and the bottom plate (806). The clamp guide rods (801) are slidably connected to the clamping plate (803).

6. The device according to claim 4, wherein: The upper surface of the operating table (5) is provided with positioning holes (9) located directly below the three clamping plates (803).

7. The device according to claim 2, wherein: A displacement sensor (10) is provided on the upper surface of the operating table (5).

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