A machining tool clamp for a base connecting piece capable of changing the lap angle of a pipe fitting

Abstract

The utility model discloses a machining frock clamp of base connecting piece that can change pipe joint lap joint angle, including base and positioning clamping mechanism, the positioning clamping mechanism includes support plate, positioning assembly, lateral clamping component, upper clamping component and lower clamping component, the utility model discloses the use in combination with setting base and positioning clamping mechanism, will install base in the drilling machine after, can change the base connecting piece of pipe joint lap joint angle and prevent on the support block, make lateral clamping component, upper clamping component and lower clamping component with positioning assembly cooperation can lock up the clamping of workpiece, can carry out the drilling processing, and the clamping process is convenient, and the machining precision is high.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a machining fixture for a base connector that can change the overlap angle of pipe fittings. Background Technology

[0002] In modern industrial production, steel pipe frames are widely used in various fields such as machinery manufacturing, construction engineering, and furniture manufacturing due to their high strength, light weight, ease of processing, and convenient disassembly. A steel pipe frame is a support structure composed of multiple steel pipes connected by frame connectors.

[0003] Among them, the base connector, as a connecting component of the supporting frame, is an essential connecting accessory in the steel pipe frame, playing the role of transferring the upper load to the foundation. In actual installation, to accommodate situations where the frame angle may deviate due to cutting, welding, or uneven ground, the applicant has manufactured a base connector with adjustable pipe overlap angle that can finely adjust the overlap angle, effectively improving installation accuracy, optimizing structural stress, and enhancing stability. The base connector consists of a column support component and a crossbeam overlap component that are rotatably connected. For the specific structure of the base connector, please refer to [link to details]. Figure 5 and Figure 6 .

[0004] In the manufacturing process of the base connector with adjustable pipe overlap angle, drilling is required on the workpiece. High accuracy in position and angle is required for drilling. Before drilling, the base connector is usually clamped and limited. However, the base connector with adjustable pipe overlap angle is a non-standard part, which is composed of a column support component and a crossbeam overlap component that can be rotatably connected. During clamping, the existing fixtures can only clamp and drill one component of the connector first, and then change to another fixture to clamp and drill the other component. During processing, not only are fixtures frequently changed, but each clamping requires repeated adjustments based on the operator's experience and the use of dial gauges to find the specific angle surface to be machined on the workpiece, which consumes a lot of auxiliary time and results in extremely low production efficiency. Summary of the Invention

[0005] To address the aforementioned issues, this utility model provides a machining fixture for a base connector with high processing precision and convenient clamping, allowing for adjustment of the pipe fitting overlap angle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a machining fixture for a base connector with an adjustable pipe overlap angle, comprising a base and a positioning and clamping mechanism; the base is a rectangular plate structure, and the top surface of the base has elongated mounting holes on the left and right sides that penetrate the thickness direction, namely hole number one and hole number two.

[0007] The positioning and clamping mechanism includes a support plate, a positioning component, a lateral clamping component, an upper clamping component, and a lower clamping component. The support plate is a rectangular plate located at the midpoint of the top surface of the base and fixedly connected to the base. The two long sides of the rectangular plate are parallel to and opposite to the mounting holes on both sides of the base.

[0008] The positioning assembly includes a first positioning plate and a second positioning plate. The first positioning plate is disposed on the top surface of the base between the first hole and the support plate and is fixed thereto. The first positioning plate is close to the rear end face of the base. The second positioning plate is also disposed on the top surface of the base between the first hole and the support plate and is fixed thereto. It is close to the front end face of the base and is on the same axis as the first positioning plate.

[0009] The lateral clamping assembly includes a lateral tightening seat, a lateral tightening rod, a lateral tightening seat, and a lateral tightening rod. The lateral tightening seat is disposed on the top surface of the base between the second hole and the support plate and is fixed thereto. The lateral tightening seat is close to the rear end face of the base. The end face of the lateral tightening seat has a lateral tightening hole with an internal thread structure that is opposite to the support block. The opening height of the lateral tightening hole is higher than the height of the support block. The lateral tightening rod is a "T" shaped rod with a tightening handle at its horizontal end and a threaded tightening section at its vertical end. The lateral tightening rod is located in the lateral tightening hole of the lateral tightening seat and its vertical end faces the support plate.

[0010] The lateral tightening seat is placed on the top surface of the base between the second hole and the support plate and fixed thereto. The lateral tightening seat is close to the front end face of the base. The end face of the lateral tightening seat has a lateral tightening hole with an internal thread structure. The orientation of the lateral tightening hole is the same as that of the lateral tightening hole. Similarly, its opening height is higher than the height of the support block. The structure of the lateral tightening rod is the same as that of the lateral tightening rod. A lateral tightening block is provided on the vertical end of the lateral tightening rod. The lateral tightening block is connected to the vertical end of the lateral tightening rod through a bearing. The lateral tightening rod is located in the lateral tightening hole of the lateral tightening seat, and the orientation of the vertical end is the same as that of the lateral tightening rod.

[0011] The upper clamping assembly includes an upper clamping seat and an upper clamping rod. The upper clamping seat is located at the midpoint of the rear side of the top surface of the support plate. Its end face has an upper clamping hole with an internal thread structure. The opening of the upper clamping hole faces the support block and is higher than the height of the support block. The upper clamping rod is located in the upper clamping hole of the upper clamping seat. Its structure is the same as that of the lateral clamping rod. An upper clamping block is installed on the vertical end of the upper clamping rod, and the vertical end of the upper clamping rod faces the support block.

[0012] The lower clamping assembly includes a lower tightening seat and a lower tightening rod. The lower tightening seat is located at the midpoint of the front face of the top of the support plate, and its end face has a lower tightening hole with an internal thread structure. The opening of the lower tightening hole faces the support block and is higher than the height of the support block. The structure of the tightening rod is the same as that of the side tightening rod, and it is located in the lower tightening hole of the lower tightening seat, with the vertical end of the lower tightening rod facing the support block.

[0013] As an optimized solution for this case, in order to improve the clamping effect and ensure machining accuracy, the lateral clamping block is integrally cast from an upper circular plate and a lower circular plate. The lower circular plate and the upper circular plate are coaxially stacked to form a stepped frustum structure. The diameter of the lower circular plate is larger than that of the upper circular plate, and the diameter of the upper circular plate is adapted to the inner diameter of the nozzle of the workpiece being processed. The lower circular plate of the lateral clamping block is connected to the vertical end of the lateral clamping rod through a through bearing.

[0014] Furthermore, the structure of the upper clamping block is the same as that of the side clamping block, and its circular plate is connected to the vertical end of the upper clamping rod through a through bearing.

[0015] Beneficial effects: ①. This utility model combines a base and a positioning clamping mechanism. The base is installed behind the drilling machine, and the base connector that can change the overlap angle of the pipe fitting is placed on the support block. The side clamping component, upper clamping component, and lower clamping component cooperate with the positioning component to lock and clamp all components of the workpiece at once without changing the fixture. The clamping process is convenient, the positioning is accurate, and the processing quality and consistency are significantly improved.

[0016] ②. In subsequent clamping, the adjusted lateral tightening rod and lower tightening rod remain stationary. Only the lateral top tightening rod and upper top tightening rod need to be adjusted to remove and place the workpiece for clamping. The clamping is fast and efficient, and the production efficiency is multiplied. Moreover, the operation is simple and reduces the dependence on personnel skills. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 for Figure 1 A top-view structural diagram.

[0019] Figure 3 This is a schematic diagram of the structure of the present invention when clamping a workpiece.

[0020] Figure 4 for Figure 3 A top-view structural diagram.

[0021] Figure 5 This is a schematic diagram of the connection when installing and tightening screws after drilling holes in the workpiece in this utility model.

[0022] Figure 6 for Figure 5 A schematic diagram of the structure of the workpiece before drilling.

[0023] In the diagram: 1. Base; 2. Hole No. 1; 3. Hole No. 2; 4. Support plate; 5. Positioning plate No. 1; 6. Positioning plate No. 2; 7. Side tightening seat; 8. Side tightening rod; 9. Side top tightening seat; 10. Side top tightening rod; 11. Side top tightening block; 12. Upper top tightening seat; 13. Upper top tightening rod; 14. Upper top tightening block; 15. Lower tightening seat; 16. Lower tightening rod; 17. Workpiece. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, the accompanying drawings are all in a very simplified form, using non-precise ratios, and are only used to facilitate and clearly illustrate the purpose of the embodiments of this utility model.

[0026] like Figure 1-6 As shown, this embodiment discloses a machining fixture for a base connector with an adjustable pipe overlap angle, including a base 1 and a positioning and clamping mechanism.

[0027] See Figure 1 and Figure 2 The base 1 is a rectangular plate structure. The top surface of the base 1 has long strip-shaped mounting holes on the left and right sides that penetrate the thickness direction, which are respectively hole 2 and hole 3.

[0028] from Figure 1 As can be seen, the positioning and clamping mechanism includes a support plate 4, a positioning component, a lateral clamping component, an upper clamping component, and a lower clamping component. The support plate 4 is a rectangular plate that is set at the midpoint of the top surface of the base 1 and is fixedly connected to the base 1. The two long sides of the rectangular plate are parallel to and opposite to the mounting holes on both sides of the base 1.

[0029] See Figure 2 The positioning assembly includes a first positioning plate 5 and a second positioning plate 6. The first positioning plate 5 is disposed on the top surface of the base 1 between the first hole 2 and the support plate 4 and is fixed thereto. The first positioning plate 5 is close to the rear end face of the base 1. The second positioning plate 6 is also disposed on the top surface of the base 1 between the first hole 2 and the support and is fixed thereto. It is close to the front end face of the base 1 and is on the same axis as the first positioning plate 5.

[0030] See Figure 1 and Figure 2 The lateral clamping assembly includes a lateral tightening seat 7, a lateral tightening rod 8, a lateral tightening seat 9, and a lateral tightening rod 10. The lateral tightening seat 7 is disposed on the top surface of the base 1 between the second hole 3 and the support plate 4 and is fixed thereto. The lateral tightening seat 7 is close to the rear end face of the base 1. The end face of the lateral tightening seat 7 has a lateral tightening hole with an internal thread structure that is opposite to the support block. The opening height of the lateral tightening hole is higher than the height of the support block. The lateral tightening rod 8 is a "T" shaped rod with a tightening handle at its horizontal end and a threaded tightening section at its vertical end. The lateral tightening rod 8 is located in the lateral tightening hole of the lateral tightening seat 7 and its vertical end faces the support plate 4.

[0031] See Figure 2 The lateral tightening seat 9 is placed on the top surface of the base 1 between the second hole 3 and the support plate 4 and fixed thereto. The lateral tightening seat 9 is close to the front end face of the base 1. The end face of the lateral tightening seat 9 is provided with a lateral tightening hole with an internal thread structure. The orientation of the lateral tightening hole is the same as that of the lateral tightening hole. Similarly, its opening height is higher than the height of the support block. The structure of the lateral tightening rod 10 is the same as that of the lateral tightening rod 8. A lateral tightening block 11 is provided on the vertical end of the lateral tightening rod 10. The lateral tightening block 11 is connected to the vertical end of the lateral tightening rod 10 through a bearing. The lateral tightening rod is located in the lateral tightening hole of the lateral tightening seat 9, and the orientation of the vertical end is the same as that of the lateral tightening rod 8.

[0032] from Figure 1 and Figure 2 It can be seen that the lateral clamping block 11 is integrally cast from an upper circular plate and a lower circular plate. The lower circular plate and the upper circular plate are coaxially stacked to form a stepped frustum structure. The diameter of the lower circular plate is larger than that of the upper circular plate, and the diameter of the upper circular plate is adapted to the inner diameter of the tube opening of the workpiece 17. The lower circular plate of the lateral clamping block 11 is connected to the vertical end of the lateral clamping rod 10 through a through bearing.

[0033] See Figure 1 The upper clamping assembly includes an upper clamping seat 12 and an upper clamping rod 13. The upper clamping seat 12 is located at the midpoint of the rear side of the top surface of the support plate 4. Its end face has an upper clamping hole with an internal thread structure. The opening of the upper clamping hole faces the support block and is higher than the height of the support block. The upper clamping rod 13 is located in the upper clamping hole of the upper clamping seat 12. Its structure is the same as that of the side clamping rod 10. An upper clamping block 14 is installed on the vertical end, and the vertical end of the upper clamping rod 13 faces the support block.

[0034] See Figure 1 and Figure 2 The structure of the upper clamping block 14 is the same as that of the side clamping block 11, and its circular plate is connected to the vertical end of the upper clamping rod 13 through a through bearing.

[0035] See Figure 2 The lower clamping assembly includes a lower tightening seat 15 and a lower tightening rod 16. The lower tightening seat 15 is located at the midpoint of the front side of the top face of the support plate 4. Its end face has a lower tightening hole with an internal thread structure. The opening of the lower tightening hole faces the support block and is higher than the height of the support block. The structure of the tightening rod is the same as that of the side tightening rod 8. It is located in the lower tightening hole of the lower tightening seat 15 and the vertical end of the lower tightening rod 16 faces the support block.

[0036] In use, first install base 1 on the drilling machine, see [reference]. Figure 3 and Figure 4 Place the workpiece 17 on the support plate 4, and align the pipe openings on both sides with the lateral clamping block 11 and the upper clamping block 14 respectively. First, tighten the lateral clamping rod 8 to cooperate with the first positioning plate 5 to laterally limit the workpiece 17. Then, tighten the lower clamping rod 16 to limit the front end of the workpiece 17 near the base 1. After adjustment, the pipe openings on both sides of the workpiece 17 are on the same axis as the lateral clamping block 11 and the upper clamping block 14 respectively. Finally, rotate the lateral clamping rod 10 and the upper clamping rod 13 to engage and limit the lateral clamping block 11 and the upper clamping block 14 with the pipe openings of the workpiece 17, and then drilling can be performed.

[0037] During subsequent clamping, the adjusted lateral tightening rod and lower tightening rod remain stationary. Only the lateral clamping rod and upper clamping rod need to be adjusted to remove and clamp the workpiece.

[0038] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A machining fixture for a base connector with an adjustable pipe overlap angle, comprising a base (1) and a positioning and clamping mechanism; the base (1) is a rectangular plate structure, and the top surface of the base (1) has elongated mounting holes extending through the thickness direction on both the left and right sides, namely hole number 1 (2) and hole number 2 (3); characterized in that: The positioning and clamping mechanism includes a support plate (4), a positioning component, a lateral clamping component, an upper clamping component and a lower clamping component. The support plate (4) is a rectangular plate set at the midpoint of the top surface of the base (1) and fixedly connected to the base (1). The two long sides of the rectangular plate are parallel to and opposite to the mounting holes on both sides of the base (1). The positioning assembly includes a first positioning plate (5) and a second positioning plate (6). The first positioning plate (5) is set on the top surface of the base (1) between the first hole (2) and the support plate (4) and fixed thereto. The first positioning plate (5) is close to the rear end face of the base (1). The second positioning plate (6) is also set on the top surface of the base (1) between the first hole (2) and the support and fixed thereto. It is close to the front end face of the base (1) and is on the same axis as the first positioning plate (5). The lateral clamping assembly includes a lateral tightening seat (7), a lateral tightening rod (8), a lateral tightening seat (9), and a lateral tightening rod (10). The lateral tightening seat (7) is located on the top surface of the base (1) between the second hole (3) and the support plate (4) and is fixed thereto. The lateral tightening seat (7) is close to the rear end face of the base (1). The end face of the lateral tightening seat (7) is provided with a lateral tightening hole with an internal thread structure that is opposite to the support block. The opening height of the lateral tightening hole is higher than the height of the support block. The lateral tightening rod (8) is a "T" shaped rod with a tightening handle at its horizontal end and a threaded tightening section at its vertical end. The lateral tightening rod (8) is located in the lateral tightening hole of the lateral tightening seat (7) and its vertical end faces the support plate (4). The lateral tightening seat (9) is placed on the top surface of the base (1) between the second hole (3) and the support plate (4) and fixed thereto. The lateral tightening seat (9) is close to the front end face of the base (1). The end face of the lateral tightening seat (9) is provided with a lateral tightening hole with an internal thread structure. The orientation of the lateral tightening hole is the same as the orientation of the lateral tightening hole. Similarly, its opening height is higher than the height of the support block. The structure of the lateral tightening rod (10) is the same as the structure of the lateral tightening rod (8). The vertical end of the lateral tightening rod (10) is provided with a lateral tightening block (11). The lateral tightening block (11) is connected to the vertical end of the lateral tightening rod (10) through a bearing. The lateral tightening rod is located in the lateral tightening hole of the lateral tightening seat (9), and the orientation of the vertical end is the same as the orientation of the lateral tightening rod (8). The upper clamping assembly includes an upper clamping seat (12) and an upper clamping rod (13). The upper clamping seat (12) is located at the midpoint of the rear side of the top surface of the support plate (4). Its end face is provided with an upper clamping hole with an internal thread structure. The opening of the upper clamping hole faces the support block and is higher than the height of the support block. The upper clamping rod (13) is located in the upper clamping hole of the upper clamping seat (12). Its structure is the same as that of the side clamping rod (10). An upper clamping block (14) is installed on the vertical end. The vertical end of the upper clamping rod (13) faces the support block. The lower clamping assembly includes a lower tightening seat (15) and a lower tightening rod (16). The lower tightening seat (15) is located at the midpoint of the front side of the top face of the support plate (4). Its end face has a lower tightening hole with an internal thread structure. The opening of the lower tightening hole faces the support block and is higher than the height of the support block. The structure of the tightening rod is the same as that of the side tightening rod (8), and it is located in the lower tightening hole of the lower tightening seat (15). The vertical end of the lower tightening rod (16) faces the support block.

2. The machining fixture for a base connector with an adjustable pipe overlap angle according to claim 1, characterized in that: The lateral clamping block (11) is integrally cast from an upper circular plate and a lower circular plate. The lower circular plate and the upper circular plate are stacked coaxially to form a stepped frustum structure. The diameter of the lower circular plate is larger than that of the upper circular plate, and the diameter of the upper circular plate is adapted to the inner diameter of the pipe opening of the workpiece. The lower circular plate of the lateral clamping block (11) is connected to the vertical end of the lateral clamping rod (10) through a through bearing.

3. The machining fixture for a base connector with an adjustable pipe overlap angle according to claim 2, characterized in that: The structure of the upper clamping block (14) is the same as that of the side clamping block (11), and its circular plate is connected to the vertical end of the upper clamping rod (13) through a through bearing.

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