Automatic welding, positioning and clamping device for conical bracket joint of helicopter

Abstract

The utility model provides an automatic welding, positioning and clamping device for a conical bracket joint of a helicopter, which comprises a base, a clamping device, a positioning device and a clamping device, wherein a mounting hole is formed in one end of the base, and the other end of the base is matched with a positioner; wherein the base can be mounted on the position changing machine; the switching disc is arranged in the mounting hole, and a through hole is formed in the switching disc; the central positioning pin is arranged in the through hole; the air tap is connected with the central positioning pin through a nut; wherein the joint cone and the joint bottom plate penetrate through the central positioning pin and are clamped between the adapter plate and the nut; by means of the clamping device, assembling, positioning and clamping of helicopter conical support connector parts before welding can be effectively achieved, clamping force can be provided in the welding process, it is guaranteed that a connector cone and a bottom plate do not shake, and the welding seam quality is guaranteed.

Description

Technical Field

[0001] This application belongs to the field of welding technology, and in particular relates to an automatic welding positioning and clamping device for helicopter conical bracket joints. Background Technology

[0002] Conical joints are important components of mounting brackets for mechanical systems such as helicopter engines and main gearboxes. They are usually manufactured by welding, and the current welding process mainly uses manual tungsten inert gas welding. However, the welding process is greatly affected by human factors, which can easily lead to defects such as porosity and incomplete penetration. This results in a low first-pass yield, large welding deformation, and unstable product fatigue life, which restricts the efficiency of product production and delivery and the service life of the product.

[0003] Automated welding technology offers advantages such as process standardization and stable quality, and has been widely used in industries such as aerospace in recent years. The key to achieving automated welding of joints lies in using a mating and locking device to achieve pre-welding assembly positioning and clamping of parts, and to provide clamping force during the welding process to ensure that the joint parts do not wobble. Utility Model Content

[0004] Purpose of application: To address the assembly positioning and clamping requirements of helicopter conical bracket joint parts before welding, this application provides an automatic welding positioning and clamping device for helicopter conical bracket joints, which has the advantages of reliable structure and simple operation.

[0005] This application provides an automatic welding, positioning, and clamping device for helicopter conical bracket joints, the device comprising:

[0006] A base, one end of which is provided with a mounting hole, and the other end is adapted to the positioner; wherein, the base can be installed on the positioner;

[0007] An adapter plate is disposed within the mounting hole, and the adapter plate is provided with a through hole;

[0008] A center positioning pin is disposed within the through hole;

[0009] The air nozzle is connected to the central positioning pin via a nut; wherein the connector cone and the connector base plate pass through the central positioning pin and are clamped between the adapter plate and the nut.

[0010] Preferably, the device further includes:

[0011] A handle is provided on the nut; wherein, rotating the handle causes the nut to rotate, and the nut can press the connector cone and the connector base plate together.

[0012] Preferably, the central positioning pin is a hollow rod; one end of the hollow rod has a T-shaped structure, and a vent hole is provided in the middle of the hollow rod.

[0013] Preferably, the device further includes:

[0014] Set screws are used to tighten the adapter plate into the mounting hole.

[0015] Preferably, the device further includes:

[0016] Short screws are used to connect the adapter plate to the T-shaped structure.

[0017] Preferably, the device further includes:

[0018] A cylindrical pin is used to position the adapter plate and the center positioning pin.

[0019] The beneficial technical effects of this application are as follows:

[0020] This application provides a robust and easy-to-operate automatic welding positioning and clamping device for joints, which can effectively realize the assembly positioning and clamping of helicopter conical bracket joint parts before welding, and can provide clamping force during the welding process to ensure that the joint cone and the base plate do not shake, thus ensuring the quality of the weld. Attached Figure Description

[0021] Figure 1 This is an isometric view of the automatic welding, positioning, and clamping device for helicopter conical bracket joints provided in the embodiments of this application;

[0022] Figure 2 This is a cross-sectional view of the automatic welding, positioning, and clamping device for helicopter conical bracket joints provided in this application embodiment;

[0023] Figure 3 This is a front view of the automatic welding, positioning, and clamping device for helicopter conical bracket joints provided in this application embodiment;

[0024] Figure 4 This is a partial sectional view of the automatic welding, positioning, and clamping device for helicopter conical bracket joints provided in this application embodiment;

[0025] Among them, 1-base, 2-adapter plate, 3-center positioning pin, 4-nut, 5-air nozzle, 6-long screw, 7-set screw, 8-short screw, 9-cylindrical pin, 10-connector cone, 11-weld, 12-connector base plate. Detailed Implementation

[0026] Please see Figure 1 This application provides an automatic welding positioning and clamping device for helicopter conical bracket joints, used for automatic welding of helicopter conical bracket joints.

[0027] The device includes a base, an adapter plate, a center locating pin, a nut, an air nozzle, a long screw, a set screw, a short screw, and a cylindrical pin. The adapter plate is mounted on the base by the long screw and tightened by the set screw; the center locating pin is mounted on the adapter plate by the short screw and the cylindrical pin; the air nozzle is mounted on the center locating pin by the nut.

[0028] The adapter plate is assembled to the base by four long screws, and the adapter plate has a central hole. The central positioning pin passes through the central hole of the adapter plate, is positioned to the adapter plate by two cylindrical pins, and is assembled to the adapter plate by two short screws. The air nozzle is assembled to the central positioning pin by a nut.

[0029] The adapter plate is secured by four set screws to ensure that the adapter plate and the base do not move relative to each other in the circumference during the operation of the entire device. The assembled connector base plate and the adapter plate are positioned by surface contact. The assembled connector cone passes through the central positioning pin and is aligned with the connector base plate. The connector cone and the connector base plate are clamped by tightening the nut.

[0030] The nut is equipped with a rotating handle for easy tightening; the air nozzle is used to introduce the protective argon gas, and the air nozzle is made of copper, which has better heat dissipation; the core of the center positioning pin has an air hole for introducing the protective argon gas during welding, which prevents the molten liquid metal from being oxidized and improves the quality of the weld.

[0031] This application provides a robust and easy-to-operate automatic welding positioning and clamping device for joints, which can effectively realize the assembly positioning and clamping of helicopter conical bracket joint parts before welding, and can provide clamping force during the welding process to ensure that the joint cone and the base plate do not shake, thus ensuring the quality of the weld.

[0032] See appendix Figure 2 , Figure 3 and Figure 4 In other embodiments, an automatic welding positioning and clamping device for helicopter conical bracket joints is provided.

[0033] The adapter plate 2 is assembled to the base 1 by four long screws 6, and the adapter plate 2 has a center hole;

[0034] The center positioning pin 3 passes through the center hole of the adapter plate 3. First, two cylindrical pins 9 are used to position the adapter plate 2, and then two short screws 8 are used to assemble it with the adapter plate 3.

[0035] The air nozzle 5 is assembled with the center positioning pin 3 by using nut 4;

[0036] The adapter plate 3 is tightened by four set screws 7 to ensure that the adapter plate 3 and the base 1 do not move relative to each other in the circumferential direction during the operation of the entire device.

[0037] The connector base plate 12 is passed through the center positioning pin 3 and placed on the adapter plate 2, and is positioned by surface contact with the adapter plate 2;

[0038] Pass the connector cone 10 through the central positioning pin and align it with the connector base plate 12. Tighten the nut 4 by rotating to clamp the connector cone and the connector base plate.

[0039] After the joint cone and the joint base plate are assembled, weld 11 can be formed by automated welding method.

[0040] This application provides an automatic welding positioning and clamping device for helicopter conical bracket joints that is robust in structure and simple to operate. By applying an adapter plate, a center positioning pin, and a nut to apply axial clamping force, it can effectively realize the assembly positioning and clamping of helicopter conical bracket joint parts before welding, and has great promotion and application value.

Claims

1. An automatic welding positioning and clamping device for a helicopter conical strut joint, characterized in that, The device comprises: a base, one end of which is provided with a mounting hole, and the other end is adapted to a positioner; wherein the base can be installed on the positioner; an adapter disc, which is arranged in the mounting hole, and is provided with a through hole; a centering pin, which is arranged in the through hole; an air nozzle, which is connected to the centering pin through a nut; wherein a joint cone and a joint base plate are clamped between the adapter disc and the nut through the centering pin.

2. The apparatus of claim 1, wherein, The device further comprises: a handle, which is arranged on the nut; wherein the handle drives the nut to rotate by rotating the handle, and the nut can press the joint cone and the joint base plate.

3. The apparatus of claim 1, wherein, The centering pin is a hollow rod; one end of the hollow rod is a T-shaped structure, and a vent hole is arranged in the middle of the hollow rod.

4. The apparatus of claim 3, wherein, The device further comprises: a locking screw, which is used to tighten the adapter disc in the mounting hole.

5. The apparatus of claim 4, wherein, The device further comprises: a short screw, which is used to connect the adapter disc and the T-shaped structure.

6. The apparatus of claim 5, wherein, The device further comprises: a cylindrical pin, which is used to position the adapter disc and the centering pin.

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