Three-way flange machining tool

Abstract

The utility model discloses a three-way flange machining tool which is provided with a clamp body, the clamp body is of a groove-shaped structure, and one side plate of the groove-shaped structure is higher than the other side plate, namely a high side plate and a low side plate; one main pipe flange end face of the three-way connecting pipe is in contact positioning with the high side plate; the machining tool is provided with a clamping rod. The clamping rod penetrates through the main pipe, one end of the clamping rod is fixedly connected with the high side plate, the other end of the clamping rod penetrates through a hole in the clamping pressing plate, and the clamping pressing plate is pressed to the flange end face of the other main pipe through a nut, so that the three-way connecting pipe is tightly pressed on the clamp body. By the adoption of the technical scheme, the machining efficiency and the positioning precision are improved, and the adjusting and correcting time in the machining process is shortened; the labor intensity of operators is reduced; the positioning clamp and the clamping mechanism can be replaced and adjusted according to three-way flanges of different specifications, so that the universality and the flexibility of the tool are enhanced; and the stability and precision in the machining process are ensured, and the machining quality is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of machining process equipment. More specifically, this utility model relates to a tooling for machining tee flanges. Background Technology

[0002] Three-way valves are common components in fluid connections and are widely used in industries such as petroleum, chemical, and machinery. Existing tooling for machining three-way valve branch flanges suffers from low machining efficiency, poor positioning accuracy, and cumbersome tooling changes, making it difficult to meet the demands of high-precision, high-efficiency production.

[0003] Using keywords such as "tee; pipe fitting; flange; positioning; clamping; machining", a search was conducted on existing publicly available technical documents, yielding the following results:

[0004] 1. Chinese patent document: "A clamping fixture for batch machining of pipe fittings", patent (application) number: 202321689699.8; the technical solution described therein is:

[0005] "A clamping fixture for batch machining of pipe fittings is installed on a fourth-axis rotary table, which is compatible with a three-axis machine tool. The clamping fixture includes a flange, a base, a clamp base, and clamping jaws. The flange is a rotating structure, serving as a transition plate between the clamping fixture and the fourth-axis rotary table. One end is connected to the fourth-axis rotary table, and the other end is installed with the clamping fixture via a quick-positioning assembly. The base is a rotating structure, with a protruding and symmetrical square platform at the center of the front. Each of the four sides of the square platform clamps a pair of pipe fitting parts via a clamping jaw assembly."

[0006] The technical effects described are:

[0007] "It can achieve off-machine clamping, using two identical sets of fixtures to maintain continuous processing, and achieve mass production simply and efficiently. The use of quick-positioning components ensures that the rotation center of the clamping fixture coincides with the rotation center of the fourth axis of the machine tool, ensuring the stability and repeatability of the entire quick-change system."

[0008] 2. Chinese patent document: "A machining fixture for pipe bend joints or tee-type parts", patent (application) number: 202220543889.8; the technical solution described therein is:

[0009] "A machining fixture for pipe bends or tees includes a clamping part that can be clamped on a machine tool. A fixing part is provided at one end of the clamping part. The fixing part has a clamping slot for placing the part to be processed and a fastening structure for rotational limitation. In use, the part to be processed is placed in the clamping slot, and the fastening structure is used to fix and position the part to be processed. Finally, the clamping part is clamped on the machine tool for processing."

[0010] The technical effects described are:

[0011] "Its structure is simple, its cost is low, and it is easy to use. It can be applied to the processing of various pipe fitting blanks and can effectively improve the production efficiency of the parts. In addition, the clamping part can ensure that the tooling can be quickly clamped on the lathe and that the coaxiality between the tooling and the blank is within 0.02 after clamping the blank, resulting in good part processing quality and high precision."

[0012] However, the technical solutions recorded in the aforementioned technical documents, as well as the existing publicly available technical solutions, have not been able to effectively solve the problems and defects in the existing technology, such as "low processing efficiency, poor positioning accuracy, and cumbersome tooling replacement, making it difficult to meet the production needs of high precision and high efficiency." Their application is very troublesome and difficult to promote. Utility Model Content

[0013] This utility model provides a tooling for machining tee flanges, the purpose of which is to improve machining efficiency and positioning accuracy.

[0014] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0015] This utility model discloses a tee flange processing fixture, which is set on a processing worktable to process the end face of the branch flange on a tee connecting pipe. The tee connecting pipe also includes a main pipe. The processing fixture is equipped with a clamping body, which is a groove-shaped structure. One side plate of the groove-shaped structure is higher than the other side plate, namely a high side plate and a low side plate. The end face of one main pipe flange of the tee connecting pipe is in contact with and positioned by the high side plate. The processing fixture is equipped with a clamping rod. The clamping rod passes through the main pipe, with one end fixedly connected to the high side plate, and the other end passes through a hole in the clamping pressure plate. The clamping pressure plate is pressed against the end face of the other main pipe flange by a nut, so that the tee connecting pipe is pressed tightly onto the clamping body.

[0016] A main positioning surface positioning hole is provided on the high side plate, and the positioning pin passes through the main positioning surface positioning hole and the mounting hole on the end face of the main flange to realize the positioning of the tee connecting pipe.

[0017] A pressure surface positioning hole is provided on the low side plate, and a positioning pin passes through the pressure surface positioning hole and the mounting hole on the end face of the main flange to achieve auxiliary positioning of the tee connecting pipe.

[0018] On the inner surface of the base plate of the groove-shaped structure, a pre-positioning support pin is provided.

[0019] Auxiliary support bolts are provided on the base plate of the groove-shaped structure.

[0020] The end of the positioning pin is provided with a guide taper.

[0021] The base plate of the groove-shaped structure is provided with connecting bolt holes, and the clamp body is fastened to the processing worktable by connecting bolts.

[0022] This utility model adopts the above-mentioned technical solution and has outstanding advantages in grinding small and medium-sized wire castings: it improves processing efficiency and positioning accuracy, reduces adjustment and correction time during processing, reduces the labor intensity of operators, and the positioning fixtures and clamping mechanisms can be replaced and adjusted according to different specifications of tee flanges, enhancing the versatility and flexibility of tooling; it ensures stability and accuracy during processing and improves processing quality. Attached Figure Description

[0023] The following is a brief explanation of the contents shown in the attached figure and the markings therein:

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 for Figure 1 The diagram shows the structure rotated 90 degrees counterclockwise along the vertical axis.

[0026] The diagram is marked as follows:

[0027] 1. Machining workbench; 2. Main positioning surface positioning hole; 3. Clamping plate; 4. Main pipe flange; 5. Branch pipe flange; 6. T-connector pipe; 7. Main pipe; 8. Branch pipe; 9. Clamping rod; 10. Clamping body; 11. Pressure surface positioning hole. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0029] like Figure 1 , Figure 2 The structure of this utility model shown is a three-way flange processing fixture, which is set on the processing workbench 1 to process the end face of the branch flange 5 on the three-way connecting pipe 6. The three-way connecting pipe 6 also includes a main pipe 7 and a branch pipe 8.

[0030] In order to solve the problems and overcome the defects of the existing technology, and to achieve the invention objective of improving processing efficiency and positioning accuracy, the technical solution adopted by this utility model is as follows:

[0031] like Figure 1 , Figure 2As shown, the tee flange processing fixture of this utility model is equipped with a clamping body 10. The clamping body 10 has a groove-shaped structure. The height of one side plate of the groove-shaped structure is higher than that of the other side plate, which are respectively the high side plate and the low side plate. The end face of one main flange 4 of the tee connecting pipe 6 is in contact with and positioned by the high side plate. The processing fixture is equipped with a clamping rod 9. The clamping rod 9 passes through the main pipe 7, one end is fixedly connected to the high side plate, and the other end passes through the hole on the clamping pressure plate 3. The clamping pressure plate 3 is pressed against the end face of the other main flange 4 by a nut, so that the tee connecting pipe 6 is pressed tightly on the clamping body 10.

[0032] The tooling base of this invention, namely the clamping body 10, is an integral structure with sufficient rigidity and stability to support and fix the entire workpiece. The clamping mechanism (clamping plate 3) is set on the tooling surface to clamp and fix flanges and pipes. The tightening method of the clamping mechanism screw (clamping rod 9) can quickly and accurately clamp the workpiece, improving processing efficiency and positioning accuracy. At the same time, the clamping mechanism also has a fine-tuning function, which can adjust the clamping force and position according to actual needs.

[0033] The beneficial effects of the above-mentioned technical solution of this utility model are as follows: This grinding platform has outstanding advantages in grinding small and medium-sized wire castings:

[0034] Improved processing efficiency: This utility model improves processing efficiency and positioning accuracy by optimizing the tooling structure and clamping method, and reduces the adjustment and correction time during the processing.

[0035] Reduced labor intensity: Reduced the labor intensity of operators and improved work efficiency;

[0036] Improved versatility: The positioning fixtures and clamping mechanisms can be replaced and adjusted according to different specifications of tee flanges, enhancing the versatility and flexibility of the tooling.

[0037] Improved machining quality: The high-precision design ensures stability and accuracy during the machining process, thereby improving machining quality.

[0038] The tooling base is provided with multiple holes for mounting positioning fixtures, clamping mechanisms, and guide devices for auxiliary support.

[0039] A main positioning surface positioning hole 2 is provided on the high side plate, and the positioning pin passes through the main positioning surface positioning hole 2 and the mounting hole on the end face of the main flange 4 to realize the positioning of the tee connecting pipe 6.

[0040] A pressure surface positioning hole 11 is provided on the low side plate, and a positioning pin passes through the pressure surface positioning hole 11 and the mounting hole on the end face of the main flange 4 to achieve auxiliary positioning of the tee connecting pipe 6.

[0041] After the workpiece is pre-positioned, the locating pins are inserted into the locating holes 2 on the main locating surface and the mounting holes on the end face of the main pipe flange 4, or through the locating holes 11 on the pressure surface and the mounting holes on the end face of the main pipe flange 4, to achieve workpiece positioning. The locating fixture uses bolts to fix the main pipe flange. The flange locating holes are designed according to the shape and size of the tee main pipe flange to ensure accurate positioning of the flange during processing. Then, the workpiece is clamped, and the flange end face is processed.

[0042] On the inner surface of the base plate of the groove-shaped structure, a pre-positioning support pin is provided.

[0043] Because the workpiece is heavy, it is inconvenient to lift and move it. Therefore, a pre-positioning support pin is used to temporarily support the workpiece. After the workpiece is officially positioned, it will move away from the pre-positioning support pin by a very small distance, which will not affect its positioning.

[0044] Auxiliary support bolts are provided on the base plate of the groove-shaped structure.

[0045] The tooling base, or clamping body 10, has multiple bolt holes for auxiliary support of the workpiece.

[0046] After the workpiece is installed and positioned, to make the workpiece more stable, the auxiliary support bolts are rotated upwards until they contact the workpiece, thus providing support. This effectively overcomes the impact of large forces or vibrations generated during processing.

[0047] The end of the positioning pin is provided with a guide taper.

[0048] Since the holes on the workpiece and the holes on the fixture are misaligned before positioning, the guide taper facilitates the insertion of the positioning pin; otherwise, insertion may be difficult.

[0049] The base plate of the groove-shaped structure is provided with connecting bolt holes, and the clamping body 10 is fastened to the processing worktable 1 by connecting bolts.

[0050] All connecting bolt holes need to have a certain amount of adjustment. For example, the hole diameter should be larger than the connecting bolt, or an oblong bolt hole should be used so that the fixture can be adjusted appropriately as needed.

[0051] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A tee flange processing fixture, set on a processing workbench (1), for processing the end face of the branch flange (5) on a tee connecting pipe (6), wherein the tee connecting pipe (6) further includes a main pipe (7); characterized in that: The processing fixture is equipped with a clamping body (10), which is a groove-shaped structure. The height of one side plate of the groove-shaped structure is higher than that of the other side plate, namely the high side plate and the low side plate. The end face of the main flange (4) of the three-way connecting pipe (6) is in contact with the high side plate for positioning. The processing fixture is equipped with a clamping rod (9). The clamping rod (9) passes through the main pipe (7), one end is fixedly connected to the high side plate, and the other end passes through the hole on the clamping pressure plate (3). The clamping pressure plate (3) is pressed against the end face of the other main flange (4) by the nut, so that the three-way connecting pipe (6) is pressed on the clamping body (10).

2. The tooling for machining a tee flange according to claim 1, characterized in that: A main positioning surface positioning hole (2) is provided on the high side plate, and the positioning pin passes through the main positioning surface positioning hole (2) and the mounting hole on the end face of the main flange (4) to realize the positioning of the tee connecting pipe (6).

3. The tooling for machining a tee flange according to claim 1, characterized in that: A pressure surface positioning hole (11) is provided on the low side plate, and the tee connecting pipe (6) is auxiliary positioned by passing a positioning pin through the pressure surface positioning hole (11) and the mounting hole on the end face of the main flange (4).

4. The tooling for machining a tee flange according to claim 1, characterized in that: A pre-positioning support pin is provided on the inner surface of the base plate of the groove-shaped structure.

5. The tee flange machining fixture according to claim 1, characterized in that: Auxiliary support bolts are provided on the base plate of the groove-shaped structure.

6. The tooling for machining a tee flange according to claim 2, characterized in that: The end of the positioning pin is provided with a guide taper.

7. The tooling for machining a tee flange according to claim 3, characterized in that: The end of the positioning pin is provided with a guide taper.

8. The tooling for machining a tee flange according to claim 1, characterized in that: The bottom plate of the groove-shaped structure is provided with connecting bolt holes, and the clamping body (10) is fastened to the processing worktable (1) by connecting bolts.

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