Machining clamp for bent pipe flange joint

Abstract

The utility model belongs to the field of flange joint machining, and relates to a machining clamp for a bent pipe flange joint. Comprising two pipe bending clamps which have the same structure and are symmetrically arranged, and the two pipe bending clamps are used for clamping and fixing a pipe bending part of a pipe bending flange joint. And the two elbow clamps are detachably and fixedly connected, so that the flange joint of the elbow is convenient to clamp and disassemble. The bent pipe clamp is provided with the bent pipe fixing grooves, the through hole formed by the two bent pipe fixing grooves is matched with the outer surface of the bent pipe portion of the bent pipe flange connector in shape, the through hole is used for guaranteeing the clamping stability of the clamp on the bent pipe flange connector, and machining of the flange portion is facilitated. Wherein one bent pipe clamp is fixedly arranged on the machine tool, a flange fixing seat is arranged on the machine tool, and the flange fixing seat is used for fixing the large end of the bent pipe flange joint, so that the bent pipe part of the bent pipe flange joint is convenient to machine. According to the utility model, the bent pipe flange joint can be quickly clamped, and the machining efficiency of the bent pipe flange joint is improved.

Description

Technical Field

[0001] The utility model belongs to the field of flange joint processing and relates to a processing fixture for an elbow flange joint. Background Art

[0002] Flange pipe fittings are used to match pipes. Some are processed, and some are not. Some castings are made by casting the flange together, or by welding the flange and pipe fittings, while the welded ones are processed later. Some can be processed in the factory, and some can be processed on the construction site. There are large and small head flange pipe fittings, as well as elbows and tee flange pipe fittings. The materials are also diverse, including carbon steel, alloy steel, stainless steel, etc.

[0003] With the development of the aviation industry, the aviation industry has stricter requirements for parts such as flange joints, including its accuracy and surface roughness, etc. Especially for elbow flange joints, elbow flange joints have complex structures, are difficult to process directly, and are not easy to clamp, which makes the processing difficulty significantly greater. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a processing fixture for elbow flange joints. The utility model can realize rapid clamping of elbow flange joints and improve the processing efficiency of elbow flange joints.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a processing fixture for an elbow flange joint, comprising two elbow fixtures with the same structure and symmetrically arranged, the two elbow fixtures are detachably fixedly connected, an elbow fixing groove is provided on the elbow fixture, a through hole jointly formed by the two elbow fixing grooves follows the outer surface of the elbow part of the elbow flange joint, one of the elbow fixtures is fixedly arranged on a machine tool, and a flange fixing seat is provided on the machine tool.

[0007] Furthermore, the two pipe bending clamps are connected by a plurality of fastening bolts.

[0008] Furthermore, a plurality of first bolt holes are provided on the pipe bending clamp, the first bolt holes of two pipe bending clamps are connected, and the first bolt holes are used for passing fastening bolts.

[0009] Furthermore, the contact surfaces of the two pipe bending fixtures are flat surfaces.

[0010] Furthermore, a plurality of second bolt holes are formed on the flange fixing seat, and a plurality of bolts are passed through the second bolt holes.

[0011] Furthermore, a plurality of pin holes are arranged on the flange fixing seat.

[0012] Furthermore, the surface where the flange fixing seat contacts the large end surface of the elbow flange joint is a flat surface.

[0013] Furthermore, the surface where the flange fixing seat contacts the end face of the large end of the elbow flange joint is an inclined surface, and the inclined surface is used to make the end face of the small end of the elbow flange joint be in a vertical plane.

[0014] Furthermore, the angle between the inclined surface and the horizontal plane is α, and α is equal to 90° minus the angle between the end surface of the large end of the elbow flange joint and the end surface of the small end of the elbow flange joint.

[0015] Furthermore, a counterweight block is provided on the flange fixing seat.

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

[0017] The utility model includes two bending pipe clamps with the same structure and symmetrical arrangement. The two bending pipe clamps are used to clamp and fix the bending pipe part of the bending pipe flange joint, which is convenient for processing the flange part of the bending pipe flange joint. The two bending pipe clamps are detachably fixedly connected, which is convenient for clamping and disassembling the bending pipe flange joint. The bending pipe clamp is provided with a bending pipe fixing groove. The through hole formed by the two bending pipe fixing grooves is shaped in accordance with the outer surface of the bending part of the bending pipe flange joint. The through hole is used to ensure the stability of the clamp clamping the bending pipe flange joint, which is convenient for processing the flange part. One of the bending pipe clamps is fixedly set on a machine tool, and a flange fixing seat is provided on the machine tool. The flange fixing seat is used to fix the large end of the bending pipe flange joint, which is convenient for processing the bending pipe part of the bending pipe flange joint. The utility model can realize the rapid clamping of the bending pipe flange joint and improve the processing efficiency of the bending pipe flange joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the assembly structure of the pipe bending fixture and the pipe bending flange joint of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the pipe bending fixture of the utility model;

[0020] Figure 3 It is a schematic diagram of the assembly structure of the flange fixing seat and the elbow flange joint of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the flange fixing seat of the utility model;

[0022] Figure 5 The schematic diagram of the structure of the elbow flange joint to be processed is shown in FIG.

[0023] Figure 6 This is a schematic diagram of the structure of the elbow flange joint that has been processed.

[0024] Among them: 1. Bend pipe clamp; 2. Flange fixing seat; 3. First bolt hole; 4. Counterweight block; 5. Second bolt hole; 6. Bend pipe fixing groove; 7. Bend pipe flange joint; 8. Big end of bend pipe flange joint; 9. Small end of bend pipe flange joint. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or 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 that includes 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.

[0027] The utility model is further described in detail below with reference to the accompanying drawings:

[0028] See also Figure 1 and Figure 2 The utility model discloses a processing fixture for an elbow flange joint, comprising two elbow clamps 1 of identical structure and symmetrical arrangement, the two elbow clamps 1 are used to clamp and fix the elbow portion of the elbow flange joint 7, so as to facilitate the processing of the flange portion of the elbow flange joint 7. The two elbow clamps 1 are detachably fixedly connected, so as to facilitate the clamping and disassembly of the elbow flange joint 7. An elbow fixing groove 6 is provided on the elbow clamp 1, and a through hole formed by the two elbow fixing grooves 6 is shaped in accordance with the outer surface of the elbow portion of the elbow flange joint 7. The through hole is used to ensure the stability of the clamp in clamping the elbow flange joint 7, so as to facilitate the processing of the flange portion. One of the elbow clamps 1 is fixedly arranged on a machine tool, and a flange fixing seat 2 is provided on the machine tool, see Figure 4 This is a schematic diagram of the structure of the flange fixing seat of the utility model, see Figure 3Schematic diagram of the assembly structure of the flange fixing seat and the elbow flange joint of the utility model. The flange fixing seat 2 is used to fix the large end 8 of the elbow flange joint, which is convenient for processing the elbow part of the elbow flange joint 7. The utility model realizes the rapid clamping of the elbow flange joint, and the two parts of the elbow flange joint 7 are clamped respectively by two elbow clamps 1 and a flange fixing seat 2, and then the elbow flange joint 7 is processed in steps, thereby improving the processing efficiency of the elbow flange joint.

[0029] See also Figure 1 and Figure 2 In another feasible embodiment of the utility model, the following is adaptively modified according to the situation. It includes two bending pipe clamps 1 with the same structure and symmetrical arrangement, the two bending pipe clamps 1 are detachably fixedly connected, the bending pipe clamps 1 are provided with bending pipe fixing grooves 6, the through holes formed by the two bending pipe fixing grooves 6 are shaped in accordance with the outer surface of the bending pipe part of the bending pipe flange joint 7, one of the bending pipe clamps 1 is fixedly arranged on a machine tool, and a flange fixing seat 2 is provided on the machine tool.

[0030] When in use, separate the two pipe bending fixtures 1, place the pipe bending flange joint 7 to be processed in the pipe bending fixing groove 6 of the pipe bending fixture 1, close and fix the two pipe bending fixtures 1, and fix the pipe bending part of the pipe bending flange joint 7 through the through hole formed by the two pipe bending fixing grooves 6, so as to facilitate the processing of the flange part. When the flange part is processed, open the two pipe bending fixtures 1, take out the pipe bending flange joint 7 with the processed flange part, and fix the processed flange part with the flange fixing seat 2, so as to facilitate the processing of the pipe bending part, see Figure 5 The following is a schematic diagram of the structure of the elbow flange joint to be processed. Figure 6 The utility model can realize the rapid clamping of the elbow flange joint and improve the processing efficiency of the elbow flange joint.

[0031] Embodiment 1:

[0032] See also Figure 1 and Figure 2 The present embodiment discloses a processing fixture for an elbow flange joint, comprising two elbow fixtures 1 having the same structure and arranged symmetrically, the two elbow fixtures 1 being detachably fixedly connected, an elbow fixing groove 6 being provided on the elbow fixture 1, a through hole formed by the two elbow fixing grooves 6 being shaped in accordance with the outer surface of the elbow portion of the elbow flange joint 7, one of the elbow fixtures 1 being fixedly arranged on a machine tool, and a flange fixing seat 2 being provided on the machine tool.

[0033] Preferably, see Figure 1The two pipe bending clamps 1 are connected by a plurality of fastening bolts. The two pipe bending clamps 1 are fixed by fastening bolts. On the one hand, it is convenient for disassembly and assembly of the two pipe bending clamps 1. On the other hand, during the processing of the pipe bending flange joint 7, the fastening bolts can ensure that the two pipe bending clamps 1 are not easily misaligned, thereby ensuring the processing quality of the pipe bending flange joint 7.

[0034] Preferably, see Figure 2 A plurality of first bolt holes 3 are provided on the pipe bending clamp 1, and the first bolt holes 3 of two pipe bending clamps 1 are connected, and the first bolt holes 3 are used for passing fastening bolts.

[0035] Preferably, the two pipe bending clamps 1 can also be fixedly connected by means of a snap connection or a lock connection.

[0036] Preferably, see Figure 2 , the contact surfaces of the two pipe bending clamps 1 are flat surfaces.

[0037] Embodiment 2:

[0038] See also Figure 1 and Figure 2 The present embodiment discloses a processing fixture for an elbow flange joint, comprising two elbow fixtures 1 having the same structure and arranged symmetrically, the two elbow fixtures 1 being detachably fixedly connected, an elbow fixing groove 6 being provided on the elbow fixture 1, a through hole formed by the two elbow fixing grooves 6 being shaped in accordance with the outer surface of the elbow portion of the elbow flange joint 7, one of the elbow fixtures 1 being fixedly arranged on a machine tool, and a flange fixing seat 2 being provided on the machine tool.

[0039] Preferably, see Figure 4 A plurality of second bolt holes 5 are provided on the flange fixing seat 2, and a plurality of bolts are passed through the second bolt holes 5. The elbow flange joint 7 is fixed to the flange fixing seat 2 through the bolts and the second bolt holes 5, so as to facilitate the processing of the elbow part of the elbow flange joint 7.

[0040] For further information, see Figure 4 A plurality of pin holes are arranged on the flange fixing seat 2, and the flange end of the elbow flange joint 7 is positioned through the pins and the pin holes.

[0041] Preferably, see Figure 4 The surface where the flange fixing seat 2 contacts the end face of the large end 8 of the elbow flange joint is a flat surface.

[0042] Preferably, see Figure 3 and Figure 4 The surface of the flange fixing seat 2 in contact with the end face of the large end 8 of the elbow flange joint is an inclined surface, and the inclined surface is used to make the end face of the small end 9 of the elbow flange joint in the vertical plane, so as to facilitate the processing of the end face of the small end 9 of the elbow flange joint.

[0043] Preferably, the angle between the inclined surface and the horizontal plane is α, which is equal to 90° minus the angle between the end surface of the large end 8 of the elbow flange joint and the end surface of the small end 9 of the elbow flange joint.

[0044] Preferably, see Figure 3 and Figure 4 A counterweight block 4 is provided on the flange fixing seat 2, which is beneficial to maintaining the balance of the flange fixing seat 2 and preventing the center of gravity of the elbow flange joint 7 from shifting during the rotation and movement after the elbow flange joint 7 is fixed on the flange fixing seat 2, thereby affecting the processing accuracy of the elbow flange joint 7.

[0045] Embodiment three:

[0046] See also Figure 1 and Figure 2 The present embodiment discloses a processing fixture for an elbow flange joint, comprising two elbow fixtures 1 of the same structure and symmetrically arranged, the two elbow fixtures 1 are detachably fixedly connected, an elbow fixing groove 6 is provided on the elbow fixture 1, and a through hole formed by the two elbow fixing grooves 6 is shaped in accordance with the outer surface of the elbow portion of the elbow flange joint 7, one of the elbow fixtures 1 is fixedly arranged on a machine tool, and a flange fixing seat 2 is provided on the machine tool, see Figure 3 A schematic diagram of the assembly structure of the flange fixing seat and the elbow flange joint of the utility model.

[0047] Preferably, the elbow flange joint 7 is fixed by two elbow clamps 1 to ensure that the end surface of the large end 8 of the elbow flange joint is in the vertical plane, which facilitates the processing of the elbow flange joint 7.

[0048] Since the central axes of the large end and the small end of the elbow flange joint 7 are not perpendicular, a multi-axis machining center must be used to complete product processing. Using the tooling of the utility model to perform processing on a CNC lathe reduces dependence on high-end equipment and reduces processing costs.

[0049] Based on the above structure, the utility model discloses a working method of a processing fixture for an elbow flange joint, which is specifically as follows:

[0050] S1, Milling 1: See Figure 1 , use two elbow clamps 1 to limit the elbow flange joint 7, use fastening bolts to fix the two elbow clamps 1 and the elbow flange joint 7, clamp them on the three-axis machining center, and process the flange end shape and hole of the elbow flange joint 7;

[0051] S2, Milling 2: See Figure 1 , clamp the two pipe bending fixtures 1 on the four-axis machining center, and process the four R-shaped surfaces at the inner end of the large flange of the pipe bending flange joint 7;

[0052] S3, Turning: see Figure 3, use the flange fixing seat 2 to limit the elbow flange joint 7, that is, use screws to fix the flange fixing seat 2 and the elbow flange joint 7, clamp it on the lathe, and process the outer circle and inner hole of the small end of the elbow flange joint 7;

[0053] S4, fitter: remove sharp edge burrs;

[0054] S5. Inspection: Check appearance, size, surface roughness, etc.;

[0055] S6. Packing and delivery: Individually packaged with bubble film.

[0056] The use of three-axis machining centers and CNC lathes to complete products that can only be completed with multi-axis machining centers has reduced dependence on high-end equipment on the one hand, and reduced processing costs on the other.

[0057] The above content is only for explaining the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. A processing fixture for an elbow flange joint, characterized in that: The invention comprises two pipe bending clamps (1) of identical structure and symmetrical arrangement, wherein the two pipe bending clamps (1) are detachably fixedly connected, the pipe bending clamps (1) are provided with pipe bending fixing grooves (6), the through holes formed by the two pipe bending fixing grooves (6) are shaped in accordance with the outer surface of the pipe bending part of the pipe bending flange joint (7), and one of the pipe bending clamps (1) is fixedly arranged on a machine tool, and the machine tool is provided with a flange fixing seat (2).

2. A processing fixture for an elbow flange joint according to claim 1, characterized in that: The two pipe bending clamps (1) are connected by a plurality of fastening bolts.

3. A processing fixture for an elbow flange joint according to claim 2, characterized in that: The pipe bending clamp (1) is provided with a plurality of first bolt holes (3), the first bolt holes (3) of two pipe bending clamps (1) are connected, and the first bolt holes (3) are used for passing fastening bolts.

4. A processing fixture for an elbow flange joint according to claim 3, characterized in that: The contact surfaces of the two pipe bending clamps (1) are flat surfaces.

5. The processing fixture for an elbow flange joint according to claim 1, characterized in that: The flange fixing seat (2) is provided with a plurality of second bolt holes (5), and a plurality of bolts are passed through the second bolt holes (5).

6. A processing fixture for an elbow flange joint according to claim 5, characterized in that: A plurality of pin holes are arranged on the flange fixing seat (2).

7. A processing fixture for an elbow flange joint according to claim 6, characterized in that: The surface of the flange fixing seat (2) in contact with the end surface of the large end (8) of the elbow flange joint is a flat surface.

8. A processing fixture for an elbow flange joint according to claim 7, characterized in that: The surface of the flange fixing seat (2) in contact with the end surface of the large end (8) of the elbow flange joint is an inclined surface, and the inclined surface is used to make the end surface of the small end (9) of the elbow flange joint be located in a vertical plane.

9. A processing fixture for an elbow flange joint according to claim 8, characterized in that: The angle between the inclined surface and the horizontal plane is α, which is equal to 90° minus the angle between the end surface of the large end (8) of the elbow flange joint and the end surface of the small end (9) of the elbow flange joint.

10. The processing fixture for elbow flange joint according to claim 8, characterized in that: A counterweight block (4) is provided on the flange fixing seat (2).

Images