Automatic argon arc welding clamp for wallboard assembly high-temperature alloy sheet metal parts and clamping method

Abstract

The invention discloses an automatic argon arc welding clamp for a high-temperature alloy sheet metal part of a wallboard assembly and a clamping method. A front end seam allowance in a positioning ring and a rear end seam allowance in a first ventilation ring jointly restrain the circumferential size of the wallboard assembly; the pressing hook and the end face of the positioning ring as well as the pressing plate and the end face of the first ventilation ring are jointly pressed to control and restrain the axial size of the front and rear mounting edges of the wallboard assembly, and an inert gas protection system composed of the first ventilation ring, the second ventilation ring, the hose, the first tee joint and the second tee joint controls argon arc welding seam back forming protection. The clamp and the method improve the welding seam quality and the welding efficiency. The inert gas protection device with the first ventilation ring, the second ventilation ring and the hose is adopted, the forming quality of the back of the weld joint is guaranteed, atmospheric condition welding is achieved, and the welding efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding deformation control fixtures, and in particular relates to an automatic argon arc welding fixture for high-temperature alloy sheet metal parts of a wall panel assembly and a clamping method. Background Art

[0002] The wall plate assembly is an important core component of the low-pressure turbine guide vane of an aircraft engine. It is in a complex environment of high temperature and high pressure and is subjected to high thermal shock of gas. Therefore, a large number of thin-walled high-temperature alloy materials are used and assembled and welded. The thin-walled high-temperature alloy welding process of the parts is very easy to deform and due to the interference of the cavity structure, gas protection is difficult, resulting in problems such as difficulty in controlling the welding size and poor weld formation quality.

[0003] The Chinese invention patent with the publication number CN117259930A discloses a welding deformation control fixture and control method for alloy thin-walled pillar fixed casing. It is simple to tighten the hook-shaped bolts on the top plate, the hook-shaped pressure plate on the bottom plate, and the nut on the top of the spindle to complete the control and constraint of the pillar fixed casing size, thereby controlling the welding deformation of the thin-walled part. The structure is complex and the operation is cumbersome, so it is necessary to use an automatic argon arc welding gas shield and deformation control fixture for high-temperature alloy sheet metal parts of the wall panel assembly to control welding deformation, reduce the deformation effect of welding on the thin-walled parts of the parts, improve the protection of the weld seam of the parts, improve the processing efficiency, and reduce the production cost. Summary of the invention

[0004] In order to solve the above problems, the present invention aims to provide an automatic argon arc welding fixture and a clamping method for high-temperature alloy sheet metal parts of wall panel components.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic argon arc welding control deformation fixture for high-temperature alloy sheet metal parts of a wall panel assembly, comprising a bottom plate, a pressing hook and a positioning ring arranged on the upper end surface of the bottom plate, the upper end surface of the positioning ring is provided with a front end stop matched with the large outer diameter of the front mounting edge of the wall panel assembly, a support ring is also provided on the upper end surface of the bottom plate, a first ventilation ring is installed on the upper end surface of the support ring, and the upper end surface of the first ventilation ring is provided with a rear end stop matched with the outer circular end surface of the rear mounting edge;

[0006] A second ventilation ring is installed on the inner diameter of the first ventilation ring, a through ventilation hole is provided on the upper end surface of the first ventilation ring and is connected to the inner diameter ventilation groove, a through ventilation hole is provided on the inner diameter of the second ventilation ring and is connected to the ventilation groove, a first tee is installed on the outer circumferential surface of the first ventilation ring, the first tee is connected to a hose, and the exhaust end of the hose is connected to the second tee;

[0007] A plurality of pressure plates are evenly distributed on the upper end surface of the first ventilation ring, a force ring is fixed on the axial position of the upper end surface of the bottom plate, the force ring is connected with a clamping screw, and the other end of the clamping screw contacts the movable positioning block.

[0008] Furthermore, the pressing hook is fixed on the upper end surface of the bottom plate, and a plurality of pressing hooks are evenly distributed along the circumference of the bottom plate.

[0009] Furthermore, a rubber pad is provided on the contact surface between the first tee and the first ventilation ring.

[0010] Furthermore, a pressure hook, a positioning ring, a support ring and a stress ring are fixed to the upper end surface of the bottom plate, and the bottom plate is hollowed out to reduce weight.

[0011] Furthermore, the movable positioning block

[0012] The arc surface matches the inner diameter of the wall panel component parts, the clamping screw has a telescopic thread, one end of the clamping screw is connected to the inner side of the force ring, and the other end is connected to the movable positioning block. The nut on the clamping screw is adjusted to adjust its telescopic length, and the fitting clearance is adjusted through the clamping screw.

[0013] Furthermore, three ends of the first tee are respectively connected to the inner diameter vent groove of the first vent ring and the hose, the second tee is connected to the hose, and argon inert gas is input into the air inlet end of the hose.

[0014] Furthermore, the base plate material is ZL102 aluminum alloy; the pressure hook, positioning ring, support block, pressure plate, movable positioning block, clamping screw, force ring, first tee and second tee are made of 45 steel; the first ventilation ring and second ventilation ring are made of H62 brass.

[0015] The clamping method of the fixture comprises the following steps:

[0016] Step 1: Loosen the side screws, pressure hooks, and pressure plates, remove the first ventilation ring and the second ventilation ring, adjust the compression screw nut to loosen the pressure plate, insert the front mounting edge and partition of the wall panel assembly, ensure that the front mounting edge with a large outer diameter is installed into the front stop, tighten the pressure hook, and then install the first ventilation ring and the second ventilation ring, install the rear mounting edge of the wall panel assembly and ensure that the outer circular end surface of the rear mounting edge is installed into the rear stop, and then tighten the side screws and the screws on the pressure plate;

[0017] Step 2: Introduce argon inert shielding gas from the hose and blow it into the cavity at the back of the weld of the wall panel assembly through the vent holes on the first vent ring and the second vent ring until the air in the cavity is emptied and inert gas protection is formed;

[0018] Step three, welding the two welds of the wall panel assembly.

[0019] Furthermore, the front end stop on the positioning ring and the rear end stop on the first ventilation ring jointly constrain the circumferential size of the wall panel assembly; the pressing hook and the end face of the positioning ring, the pressure plate and the end face of the first ventilation ring jointly press together to control and constrain the axial dimensions of the front and rear installation edges of the wall panel assembly.

[0020] Furthermore, the inert gas protection system composed of the first ventilation ring, the second ventilation ring, the hose, the first tee and the second tee controls the back forming protection of the argon arc welding weld.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. Easy to carry and clamp. The bottom plate is made of aluminum alloy and hollowed out to reduce weight, which greatly reduces the weight of the fixture while ensuring the strength of the fixture and reduces the difficulty of carrying; the fixture only needs to tighten the pressure hook, pressure plate, and pressure screws to control the welding shrinkage of the wall panel assembly, reduce the degree of shrinkage and deformation of the front and rear installation edges of the parts, and reduce the impact on the machined dimensions.

[0023] 2. Improve the quality of welds and welding efficiency. The inert gas protection device of the first ventilation ring, the second ventilation ring and the hose ensures the quality of the back formation of the weld, realizes atmospheric welding and greatly improves the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings required for use in the description of the embodiments 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 these drawings without paying creative work.

[0025] Figure 1 This is the section of the automatic argon arc welding control deformation fixture for high-temperature alloy sheet metal parts of the wall panel assembly in the present invention. Figure 1 ;

[0026] Figure 2 This is the section of the automatic argon arc welding control deformation fixture for high-temperature alloy sheet metal parts of the wall panel assembly in the present invention. Figure 2 ;

[0027] Figure 3 is a cross-sectional view of a first ventilation ring and a second ventilation ring in the present invention;

[0028] Figure 4 for Figure 3 DD cross-sectional view;

[0029] In the figure, 1-bottom plate; 2-pressing hook; 3-positioning ring; 4-supporting ring; 5-first ventilation ring; 6-second ventilation ring; 7-pressing plate; 8-movable positioning block; 9-pressing screw; 10-stress ring; 11-rubber pad; 12-first tee; 13-second tee; 14-hose; 15-venting groove; 5A-first ventilation ring end face air hole; 6A-second ventilation ring air hole; 21-screw. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0031] Reference Figure 1-Figure 4 The present invention is a gas shielding and deformation control fixture for welding high-temperature alloy sheet metal parts of a wall panel assembly, which is mainly composed of a base plate 1, a pressure hook 2, a positioning ring 3, a support ring 4, a first ventilation ring 5, a second ventilation ring 6, a pressure plate 7, a movable positioning block 8, a clamping screw 9, a force ring 10, a rubber pad 11, a first tee 12, a second tee 13, and a hose 14.

[0032] A bottom plate 1, the upper end surface of which is fixed with a pressing hook 2, a positioning ring 3, a supporting ring 4, and a stress ring 10, which fix the main components of the fixture, and the bottom plate is hollowed out to reduce weight;

[0033] A pressing hook 2, wherein the pressing hook 2 is fixed on the end surface of the bottom plate, and a plurality of pressing hooks are evenly distributed around the circumference;

[0034] A positioning ring 3, the positioning ring 3 is fixed to the upper end surface of the bottom plate 1, and the upper end surface thereof is provided with a front end stop that matches the large outer diameter of the front mounting edge of the wall panel assembly;

[0035] A support ring 4, wherein the lower end surface of the support ring 4 is fixed to the bottom plate, and the upper end surface of the support ring 4 is mounted to the first ventilation ring 5 and fixed by a plurality of side M8×25 screws 21;

[0036] The first ventilation ring 5 is fixed on the upper end face of the support ring 4. The upper end face of the first ventilation ring 5 is provided with a rear end stop that matches the outer circular end face of the rear mounting edge. The upper end face of the first ventilation ring is provided with a through ventilation hole 5A connected to the inner diameter ventilation groove 15, and the ventilation groove is connected to the first three-way exhaust end;

[0037] A second ventilation ring 6, wherein the second ventilation ring 6 is installed with the inner diameter of the first ventilation ring 5, and the inner diameter of the second ventilation ring 6 is provided with a continuous ventilation hole 6A which is communicated with the second ventilation ring ventilation groove 15;

[0038] A pressing plate 7, which is mounted on the upper end surface of the first ventilation ring 5 by means of M8×40 screws, and a plurality of pressing plates are evenly distributed on the end surface;

[0039] A movable positioning block 8, wherein the movable positioning block 8 has an arc surface that matches the inner diameter of the wall panel component part, and the matching clearance is adjusted by a clamping screw 9;

[0040] A clamping screw 9, wherein the clamping screw 9 is installed together with the force ring 10, and the clamping screw has a telescopic thread, and the telescopic length can be adjusted by adjusting the nut on the clamping screw;

[0041] A stress ring 10, which is installed at the axial center position of the upper end surface of the bottom plate 1 and fixed by M8×20 screws, and its inner diameter side surface is also connected to the clamping screw;

[0042] A rubber ring 2, the rubber ring 2 being installed on the contact surface between the first tee 12 and the first ventilation ring 5;

[0043] A first tee 12, which is installed on the outer circumferential surface of the first ventilation ring 5, and its three ends are respectively connected to the inner diameter ventilation groove of the first ventilation ring, the hose 3 and the hose 4;

[0044] A second tee 13, wherein the second tee 13 is connected to a hose 14;

[0045] A hose 14, wherein the exhaust end of the hose 14 is connected to the second three-way connection 13, and the inert gas argon is input into the air inlet end.

[0046] The base plate material is ZL102 aluminum alloy; the pressure hook, positioning ring, support block, pressure plate, movable positioning block, clamping screw, force ring, first tee and second tee are made of 45 steel; the first ventilation ring and second ventilation ring are made of H62 brass.

[0047] The circumferential size of the wall panel assembly is constrained by the front end stop on the positioning ring 3 and the rear end stop on the first ventilation ring 5; the axial size of the front and rear installation edges of the wall panel assembly is controlled and constrained by the joint pressing action of the pressure hook 2 and the end surface of the positioning ring 3, and the pressure plate 7 and the end surface of the first ventilation ring 5;

[0048] The inert gas protection system composed of the first ventilation ring 5, the second ventilation ring 6, the hose 14, the first tee 12 and the second tee 13 is used to control the back forming protection of the argon arc welding weld.

[0049] The automatic argon arc welding gas shielding and deformation control fixture for high temperature alloy sheet metal parts of wall panel components adopts the above-mentioned deformation control device and includes the following steps:

[0050] Step 1: Loosen the M8×25 screws, pressure hook 2, and pressure plate 7 on the side, remove the first ventilation ring 5 and the second ventilation ring 6, adjust the compression screw 9 nut to loosen the pressure plate 7, put in the front installation edge and partition of the wall panel assembly, ensure that the front installation edge with the large outer diameter is installed into the front stop, and tighten the pressure hook. Immediately install the first ventilation ring 5 and the second ventilation ring 6, install the rear installation edge of the wall panel assembly and ensure that the outer circular end face of the rear installation edge is installed into the rear stop, and then tighten the M8×25 screws on the side and the M8×40 screws on the pressure plate;

[0051] Step 2: introduce argon inert shielding gas from the hose and blow it into the cavity at the back of the weld of the wall panel assembly through the vent holes on the first vent ring 5 and the second vent ring 6 until the air in the cavity is emptied and an inert gas shielding is formed;

[0052] Step three, welding the two welds of the wall panel assembly.

[0053] Example

[0054] The specific steps for fixture clamping are as follows:

[0055] Step 1: Disassemble the first ventilation ring 5 and the second ventilation ring 6: Loosen the hexagon head screws 21 at 12 positions on the side, and remove the first ventilation ring 5 and the second ventilation ring 6, loosen the pressure hooks 2 at 6 positions, and adjust the tightening screws 9 at 4 positions to increase the clearance of the movable positioning block;

[0056] Step 2: Install the wall panel assembly: ① Install the front installation edge, ensure that the outer cylindrical end face of the front installation edge is tightly attached to the front stopper on the positioning ring 3, tighten the 6 pressure hooks 2 on the bottom plate to ensure that the front installation edge end face of the part is pressed tightly, tighten the 4 clamping screws 9 to make the movable positioning block 8 close to the inner diameter of the front installation edge; ② Install the partition; ③ Install the first ventilation ring 5, the second ventilation ring 6 and then install the rear installation edge, ensure that the outer cylindrical end face of the rear installation edge is tightly attached to the rear stopper on the upper end face of the first ventilation ring 5, tighten the 12 hexagonal head bolts on the pressure plate, so that the entire wall panel assembly is force-constrained;

[0057] Step 3: Inert gas protection: Inert gas argon is introduced from the hose 31, and the gas enters the ventilation groove of the first ventilation ring 5 through the first tee 12 and the second tee 13, and the air in the cavity on the back of the weld is emptied through the ventilation holes of the first ventilation ring 5 and the second ventilation ring 6. After the inert gas argon protection is formed on the back of the weld, welding is performed;

[0058] Step 4: Welding parts: Automatic argon arc welding is performed on the weld seams of the parts;

[0059] Step 5: Parts disassembly: After the parts have cooled, loosen the hexagonal head bolts on the pressure plate, the screws 21 at 12 locations on the side of the first ventilation ring 5, and the nuts at 4 locations on the clamping screws. Then take out the first ventilation ring 5 and the second ventilation ring 6 respectively, and then loosen the 6 pressure hooks 2 on the bottom plate 1 to completely take out the parts.

[0060] The above is a detailed introduction to the automatic argon arc welding fixture and clamping method for high-temperature alloy sheet metal parts of the wall panel assembly provided by the present invention. This article uses specific examples to illustrate the structure and working principle of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An automatic argon arc welding deformation control fixture for high temperature alloy sheet metal parts of wall panel components, characterized by: It comprises a base plate (1), a pressing hook (2) and a positioning ring (3) arranged on the upper end surface of the base plate (1), the upper end surface of the positioning ring (3) being provided with a front end stopper matched with the large outer diameter of the front mounting edge of the wall plate assembly, a support ring (4) being further arranged on the upper end surface of the base plate (1), a first ventilation ring (5) being installed on the upper end surface of the support ring (4), and a rear end stopper matched with the outer circular end surface of the rear mounting edge being provided on the upper end surface of the first ventilation ring (5); A second ventilation ring (6) is installed on the inner diameter of the first ventilation ring (5); a through ventilation hole is provided on the upper end surface of the first ventilation ring (5) and is connected to the inner diameter ventilation groove (15); a through ventilation hole is provided on the inner diameter of the second ventilation ring (6) and is connected to the ventilation groove (15); a first tee (12) is installed on the outer circumferential surface of the first ventilation ring (5); the first tee (12) is connected to a hose (14); and the exhaust end of the hose (14) is connected to the second tee (13); A plurality of pressure plates (7) are evenly distributed around the circumference of the upper end surface of the first ventilation ring (5), a force ring (10) is fixed at the axial center position of the upper end surface of the bottom plate (1), the force ring (10) is connected to a clamping screw (9), and the other end of the clamping screw (9) is in contact with a movable positioning block (8).

2. The automatic argon arc welding deformation control fixture for high-temperature alloy sheet metal parts of wall panel components according to claim 1 is characterized by: The pressing hook (2) is fixed on the upper end surface of the bottom plate (1), and a plurality of pressing hooks (2) are evenly distributed along the circumference of the bottom plate (1).

3. The automatic argon arc welding deformation control fixture for high-temperature alloy sheet metal parts of wall panel components according to claim 1 is characterized by: A rubber pad (11) is provided on the contact surface between the first tee (12) and the first ventilation ring (5).

4. The automatic argon arc welding deformation control fixture for high-temperature alloy sheet metal parts of wall panel components according to claim 1 is characterized by: The upper end surface of the bottom plate (1) is fixed with a pressing hook (2), a positioning ring (3), a supporting ring (4) and a stress-bearing ring (10), and the bottom plate (1) is hollowed out to reduce weight.

5. The automatic argon arc welding deformation control fixture for high-temperature alloy sheet metal parts of wall panel components according to claim 1 is characterized by: The movable positioning block (8) is in the form of an arc surface that matches the inner diameter of the wall panel component part. The clamping screw (9) has a telescopic thread. One end of the clamping screw (9) is connected to the inner side surface of the force ring (10), and the other end is connected to the movable positioning block (8). The nut on the clamping screw (9) is adjusted to adjust its telescopic length, and the fitting clearance is adjusted by the clamping screw (9).

6. The automatic argon arc welding deformation control fixture for high temperature alloy sheet metal parts of wall panel components according to claim 1 is characterized by: The three ends of the first tee (12) are respectively connected to the inner diameter vent groove of the first vent ring (5) and the hose, and the second tee (13) is connected to the hose, and argon inert gas is input into the hose air inlet end.

7. The automatic argon arc welding deformation control fixture for high temperature alloy sheet metal parts of wall panel components according to claim 1 is characterized by: The base plate (1) is made of ZL102 aluminum alloy; the pressure hook (2), the positioning ring (3), the support ring (4), the pressure plate (7), the movable positioning block (8), the clamping screw (9), the force ring (10), the first tee (12), and the second tee (13) are made of 45 steel; the first ventilation ring (5) and the second ventilation ring (6) are made of H62 brass.

8. A clamping method using the clamp according to any one of claims 1 to 7, characterized in that: The following steps are included: Step 1, loosen the side screws (21), the pressure hook (2), and the pressure plate (7), remove the first ventilation ring (5) and the second ventilation ring (6), adjust the tightening screw (9) nut to loosen the pressure plate (7), insert the front mounting edge and the partition of the wall panel assembly, ensure that the front mounting edge with a large outer diameter is installed into the front end stop, tighten the pressure hook (2), immediately install the first ventilation ring (5), the second ventilation ring (6), install the rear mounting edge of the wall panel assembly and ensure that the outer circular end surface of the rear mounting edge is installed into the rear end stop, and then tighten the side screws (21) and the screws (9) on the pressure plate (7); Step 2: introducing argon inert protective gas from the hose (14) and blowing it into the cavity at the back of the weld of the wall panel assembly through the vent holes on the first vent ring (5) and the second vent ring (6) until the air in the cavity is emptied and an inert gas protection is formed; Step three, welding the two welds of the wall panel assembly.

9. The method for clamping the automatic argon arc welding deformation control fixture for high temperature alloy sheet metal parts of the wall panel assembly according to claim 8, characterized in that: The front end stop on the positioning ring (3) and the rear end stop on the first ventilation ring (5) jointly constrain the circumferential dimensions of the wall panel assembly; the pressing hook (2) and the end surface of the positioning ring (3), and the pressing plate (7) and the end surface of the first ventilation ring (5) jointly press to control and constrain the axial dimensions of the front and rear installation edges of the wall panel assembly.

10. The method for clamping the automatic argon arc welding deformation control fixture for high temperature alloy sheet metal parts of the wall panel assembly according to claim 8, characterized in that: The inert gas protection system composed of a first ventilation ring (5), a second ventilation ring (6), a hose (14), a first tee (12) and a second tee (13) controls the back forming protection of the argon arc welding weld.

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