Welding positioning tool and method for irregular-shaped thick and large flanged circular ring

Abstract

The invention relates to the technical field of casting, in particular to a welding positioning tool and method for a thick and large flanged circular ring in an irregular shape. The positioning tool comprises a positioning disc, a wedge-shaped block and a movable block; an annular boss is arranged at the center of the bottom surface of the positioning disc; a supporting molded surface is arranged on the movable block; and the wedge-shaped block is inserted into a gap between the outer peripheral surface of the positioning disc and the movable block. The positioning disc is installed on the case body, so that the annular boss of the positioning disc is inserted into the inner hole of the inner ring body; a to-be-welded annular body is placed on the cartridge receiver body, so that the lower end face of the annular body is in butt joint with the top face of the annular edge opening; the movable block is installed in the inner hole of the annular body, the wedge-shaped block is inserted into the gap between the outer circumferential face of the positioning disc and the movable block, the movable block is pushed outwards in the radial direction to abut against the annular body and the annular edge opening, and therefore the supporting molded surface of the movable block is attached to the molded surface of the lower half section of the inner hole of the annular body and attached to the inner molded surface of the annular edge opening. Therefore, the positioning of the annular body and the casing body can be completed.

Description

Technical Field

[0001] The invention relates to the technical field of casting, and in particular to a welding positioning tool and method for an irregular-shaped thick and large flanged circular ring. Background Art

[0002] At present, large titanium alloy castings are often produced by split casting and then welding due to the limitations of the equipment's melting capacity or size.

[0003] Combination Figure 1 The figure shows a schematic diagram of the split structure of the intermediate casing casting, in which the annular body 100 and the casing body 200 are formed by split casting. The casing body 200 is provided with an inner ring body 201 and an outer ring body, and an annular edge 202 is provided at the inner ring opening of the outer ring body. The annular body 100 needs to be welded to the annular edge 202 of the casing body 200. The inner profile of the annular edge 202 is a bell-shaped profile with a small top and a large bottom.

[0004] Combination Figure 2 , Figure 3 As shown, the inner hole of the annular body 100 is a stepped profile, the upper half of the inner hole of the annular body 100 bulges inward to form a flange 101, and the lower half of the inner hole of the annular body 100 is a bell-mouth-shaped profile.

[0005] When the annular body 100 is welded to the annular edge 202 , it is required that the profile of the lower half of the inner hole of the annular body 100 and the inner profile of the annular edge 202 have a smooth transition.

[0006] Since the top surface of the outer ring of the casing body 200 is sunken in many mounting boss structures, it is difficult to clamp the annular body 100 using a clamping tool during welding. In addition, since the roundness and size of the annular body 100 and the annular edge 202 are often greatly different due to the influence of the shrinkage rate, there will be misalignment or deformation after welding, and it is impossible to ensure a smooth transition between the profile of the lower half of the inner hole of the annular body 100 and the inner profile of the annular edge 202. Summary of the invention

[0007] The main purpose of the present invention is to provide a welding positioning tool and method for an irregularly shaped thick and large flanged circular ring, aiming to solve the above technical problems.

[0008] To achieve the above-mentioned purpose, on the one hand, the present invention proposes a welding positioning tool for an irregularly shaped thick and large flanged circular ring, comprising a positioning plate, a wedge block and a movable block; an annular boss is arranged at the center of the bottom surface of the positioning plate, and the annular boss is used to be inserted into the inner hole of the inner ring body of the turbine body; a supporting surface is arranged on the movable block, and the supporting surface is used to fit on the surface of the lower half of the inner hole of the annular body, and on the inner surface of the annular edge; the wedge block is inserted in the gap between the outer peripheral surface of the positioning plate and the movable block.

[0009] Preferably, an axial limiting boss is integrally formed on the movable block, and the axial limiting boss is used to rest on the top surface of the annular body.

[0010] Preferably, a clearance groove is provided on the movable block, and the clearance groove is used to accommodate the flange on the inner hole of the annular body.

[0011] Preferably, the planes where the wedge block and the movable block cooperate are both set as inclined planes, and the inclination of the inclined plane is 6 degrees.

[0012] Preferably, the surfaces of the wedge block and the positioning plate that cooperate with each other are both configured as conical surfaces, and the taper of the conical surfaces is 6 degrees.

[0013] Preferably, the minimum gap between the outer circumference of the positioning plate and the movable block is 12 mm.

[0014] Preferably, the number of the live blocks is 8, and the number of the wedge blocks is the same as the number of the live blocks.

[0015] Preferably, after the wedge block is inserted into the gap between the outer peripheral surface of the positioning plate and the movable block, the top end of the wedge block is higher than the top surface of the movable block.

[0016] Preferably, a lightening hole is provided at the center of the positioning plate.

[0017] On the other hand, the present invention also provides a welding positioning method for an irregularly shaped thick and large flanged circular ring, using the above-mentioned welding positioning tool, comprising the following steps:

[0018] S1. Install the positioning plate on the casing body so that the annular boss of the positioning plate is inserted into the inner hole of the inner ring body;

[0019] S2, placing the annular body to be welded on the casing body so that the lower end surface of the annular body is in contact with the top surface of the annular edge;

[0020] S3, install the movable block in the inner hole of the annular body,

[0021] S4. Insert the wedge block into the gap between the outer circumference of the positioning plate and the movable block, and push the movable block radially outward to close to the annular body and the annular edge, so that the supporting surface of the movable block fits against the surface of the lower half of the inner hole of the annular body and the inner surface of the annular edge.

[0022] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0023] (1) By adopting the welding positioning tool provided by the present invention, when in use, the positioning plate is installed on the casing body, so that the annular boss of the positioning plate is inserted into the inner hole of the inner ring body; the annular body to be welded is placed on the casing body, so that the lower end surface of the annular body is in contact with the top surface of the annular edge; the loose block is installed in the inner hole of the annular body, and the wedge block is inserted into the gap between the outer peripheral surface of the positioning plate and the loose block, and the loose block is pushed radially outward to be close to the annular body and the annular edge, so that the supporting profile of the loose block is in contact with the profile of the lower half of the inner hole of the annular body and the inner profile of the annular edge, thereby completing the positioning of the annular body and the casing body.

[0024] (2) The welding positioning tool provided by the present invention has a simple structure, has a good positioning effect on the annular body and the casing body, is conducive to reducing welding deformation, and is easy to dismantle, convenient for demolding, and has strong operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the split structure of the intermediate casing casting;

[0027] Figure 2 is a top view of the annular body;

[0028] Figure 3 for Figure 2 Middle AA section view;

[0029] Figure 4 A top view of the welding positioning tool provided by the present invention when in use;

[0030] Figure 5 for Figure 4 Middle BB section view;

[0031] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0032] Figure 7 It is a schematic diagram of the three-dimensional structure of the movable block in the present invention;

[0033] Figure 8 A top view of the movable block in the present invention;

[0034] Fig. 9 for Figure 8 Middle CC section view;

[0035] Fig.10 It is a three-dimensional structural diagram of the positioning plate in the present invention;

[0036] Fig.11 A top view of the positioning plate of the present invention;

[0037] Fig.12 for Fig.11 Middle DD section view;

[0038] Fig.13 It is a three-dimensional structural diagram of the wedge block in the present invention;

[0039] Fig.14 A top view of the wedge block of the present invention;

[0040] Fig.15 for Fig.14 Middle EE section view;

[0041] Fig.16 This is a schematic structural diagram of the welding positioning tool provided by the present invention.

[0042] Explanation of the accompanying drawings: 1. positioning plate; 1a. annular boss; 1b. lightening hole; 2. wedge block; 3. movable block; 3a. positioning profile; 3b. axial limiting boss; 3c. clearance groove; 100. annular body; 101. flange; 200. casing body; 201. inner ring body; 202. annular edge. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] Combination Figures 4 to 16 As shown, on the one hand, this embodiment provides a welding positioning tool for an irregularly shaped thick and large flanged circular ring, comprising a positioning plate 1, a wedge block 2 and a movable block 3; an annular boss 1a is provided at the center of the bottom surface of the positioning plate 1, and the annular boss 1a is used to be inserted into the inner hole of the inner ring body 201 of the casing body 200; a supporting surface 3a is provided on the movable block 3, and the supporting surface 3a is used to fit on the surface of the lower half of the inner hole of the annular body 100, and on the inner surface of the annular edge 202; the wedge block 2 is inserted in the gap between the outer peripheral surface of the positioning plate 1 and the movable block 3.

[0047] Combination Figure 6 , Figure 7 and Fig. 9 As shown, an axial limiting boss 3b is integrally formed on the movable block 3, and the axial limiting boss 3b is used to rest on the top surface of the annular body 100. By providing the axial limiting boss 3b, the movable block 3 is provided with an axial limiting positioning function. When the movable block 3 is installed in the inner hole of the annular body 100, the axial limiting boss 3b rests on the top surface of the annular body 100.

[0048] Furthermore, a clearance groove 3c is provided on the movable block 3, and the clearance groove 3c is used to accommodate the flange 101 on the inner hole of the annular body 100. By providing the clearance groove 3c, a clearance effect is played to avoid interference between the movable block 3 and the flange 101 of the annular body 100.

[0049] Combination Fig. 9 , Fig.12 and Fig.15 As shown, in order to facilitate the insertion and removal of the wedge block 2, the planes where the wedge block 2 and the movable block 3 match are set to be inclined surfaces with an inclination of 6 degrees. Furthermore, the surfaces where the wedge block 2 and the positioning plate 1 match are set to be conical surfaces with a taper of 6 degrees. The wedge block 2, the movable block 3 and the positioning plate 1 all adopt a surface contact method, which has a strong supporting effect.

[0050] In this embodiment, the minimum gap between the outer circumference of the positioning plate 1 and the movable block 3 is 12 mm.

[0051] Combination Figure 4 As shown, in this embodiment, the number of the movable blocks 3 is 8, and the number of the wedge blocks 2 is the same as the number of the movable blocks 3.

[0052] Combination Figure 6 As shown, after the wedge block 2 is inserted into the gap between the outer peripheral surface of the positioning plate 1 and the movable block 3, the top end of the wedge block 2 is higher than the top surface of the movable block 3, and the operator can hold the portion of the wedge block 2 that is higher than the movable block 3 to facilitate the insertion and removal of the wedge block 2.

[0053] Combination Fig.12 As shown, a lightening hole 1b is provided at the center of the positioning plate 1. The lightening hole 1b is provided to reduce the weight of the positioning plate 1 so as to facilitate the operation of the workers.

[0054] Combination Figures 4 to 6 ,as well as Fig.16 As shown, this embodiment also provides a welding positioning method for an irregularly shaped thick and large flanged circular ring, using the above-mentioned welding positioning tool, including the following steps:

[0055] S1, installing the positioning plate 1 on the casing body 200, so that the annular boss 1a of the positioning plate 1 is inserted into the inner hole of the inner ring body 201;

[0056] S2, placing the annular body 100 to be welded on the casing body 200, so that the lower end surface of the annular body 100 is in contact with the top surface of the annular edge 202;

[0057] S3, installing the movable block 3 in the inner hole of the annular body 100, and using the axial limiting boss 3b to rest on the top surface of the annular body 100 to axially position the movable block 3;

[0058] S4. Insert the wedge block 2 into the gap between the outer circumference of the positioning plate 1 and the movable block 3, and push the movable block 3 radially outward to close to the annular body 100 and the annular edge 202, so that the supporting surface 3a of the movable block 3 fits on the surface of the lower half of the inner hole of the annular body 100 and the inner surface of the annular edge 202, thereby completing the positioning of the annular body 100 and the casing body 200.

[0059] In step S4, the relative position of the annular body 100 and the casing body 200 is adjusted by adjusting the depth of the wedge block 2 to avoid misalignment of the two.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A welding positioning tool for irregular shaped thick and large flanged rings, characterized in that: It comprises a positioning plate (1), a wedge block (2) and a movable block (3); An annular boss (1a) is provided at the center of the bottom surface of the positioning plate (1), and the annular boss (1a) is used to be inserted into the inner hole of the inner ring body (201) of the casing body (200); A supporting profile (3a) is provided on the movable block (3), and the supporting profile (3a) is used to fit on the profile of the lower half of the inner hole of the annular body (100) and on the inner profile of the annular edge (202); The wedge block (2) is inserted into the gap between the outer peripheral surface of the positioning plate (1) and the movable block (3).

2. A welding positioning tool for an irregularly shaped thick and large flanged circular ring as claimed in claim 1, characterized in that: An axial limiting boss (3b) is integrally formed on the movable block (3), and the axial limiting boss (3b) is used to rest on the top surface of the annular body (100).

3. A welding positioning tool for an irregularly shaped thick and large flanged circular ring as claimed in claim 1, characterized in that: A clearance groove (3c) is provided on the movable block (3), and the clearance groove (3c) is used to accommodate the flange (101) on the inner hole of the annular body (100).

4. A welding positioning tool for an irregularly shaped thick and large flanged circular ring as claimed in claim 1, characterized in that: The planes on which the wedge block (2) and the movable block (3) cooperate are both arranged as inclined planes, and the inclination of the inclined planes is 6 degrees.

5. The welding positioning tool for irregular shaped thick and large flanged circular ring according to claim 1, characterized in that: The surfaces of the wedge block (2) and the positioning plate (1) that match each other are both configured as conical surfaces, and the taper of the conical surfaces is 6 degrees.

6. A welding positioning tool for an irregularly shaped thick and large flanged circular ring as claimed in claim 1, characterized in that: The minimum gap between the outer peripheral surface of the positioning plate (1) and the movable block (3) is 12 mm.

7. The welding positioning tool for irregular shaped thick and large flanged circular ring according to claim 1, characterized in that: The number of the movable blocks (3) is 8, and the number of the wedge blocks (2) is the same as the number of the movable blocks (3).

8. The welding positioning tool for irregular shaped thick and large flanged circular ring according to claim 1, characterized in that: When the wedge block (2) is inserted into the gap between the outer peripheral surface of the positioning plate (1) and the movable block (3), the top end of the wedge block (2) is higher than the top surface of the movable block (3).

9. The welding positioning tool for irregular shaped thick and large flanged circular ring according to claim 1, characterized in that: A lightening hole (1b) is arranged at the center of the positioning plate (1).

10. A welding positioning method for an irregularly shaped thick flanged ring, characterized in that: The welding positioning tool according to any one of claims 1 to 9 is used, comprising the following steps: S1. Install the positioning plate (1) on the casing body (200) so that the annular boss (1a) of the positioning plate (1) is inserted into the inner hole of the inner ring body (201); S2, placing the annular body (100) to be welded on the casing body (200), so that the lower end surface of the annular body (100) is in contact with the top surface of the annular edge (202); S3, installing the movable block (3) in the inner hole of the annular body (100); S4. Insert the wedge block (2) into the gap between the outer peripheral surface of the positioning plate (1) and the movable block (3), and push the movable block (3) radially outward to be close to the annular body (100) and the annular edge (202), so that the supporting surface (3a) of the movable block (3) fits the surface of the lower half of the inner hole of the annular body (100) and the inner surface of the annular edge (202).

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