Welding tool for drone engine muffler lug

Abstract

The utility model unmanned aerial vehicle engine silencer support ear welding frock, include, bottom plate, cylinder body mechanism, exhaust hole mechanism and support ear mechanism, the bottom plate is rectangle board, the cylinder body mechanism sets up in the middle part of bottom plate, include: support board, end cover support, cylinder seat I, cylinder I, gear I, motor seat I, motor I and gear II, the exhaust hole mechanism sets up in the right rear side of bottom plate, include, cylinder seat II, cylinder II and positioning post, the support ear mechanism sets up in the front side of bottom plate, include: slide rail, slide base, motor seat II, motor II, gear III, cylinder seat III, cylinder III, support ear guide box and push rod, the utility model unmanned aerial vehicle engine silencer support ear welding frock beneficial technical effect is with frock guarantee every support ear's accurate positioning and clamping, convenient welding operation, lay the foundation for unmanned aerial vehicle engine silencer support ear's automation welding.

Description

Technical Field

[0001] This utility model relates to a welding technology for the muffler support lugs of a drone engine, and particularly to a welding fixture for the muffler support lugs of a drone engine. Background Technology

[0002] To facilitate the installation and securing of other engine components, the outer surface of the UAV engine muffler is typically welded with several lugs. These lugs are shaped like a gate, with two legs welded to the muffler surface. The crossbeam section has through holes to facilitate the installation and securing of other components (see Appendix). Figure 1 In the diagram, a represents the muffler body, b represents the end cap, c represents the lugs, and d represents the exhaust port. According to design requirements, four lugs need to be welded to the surface of the UAV muffler, arranged in two rows on the body surface. In addition to being arranged in two rows axially, they also need to be angularly distributed around the circumference relative to the exhaust port axis; specifically, the angle between the axis of the first lug through-hole counting counter-clockwise and the exhaust port axis is α, and the angle between the axis of the first lug through-hole counting counter-clockwise and the axis of the second lug through-hole is β (see Appendix). Figure 2 Existing methods for welding the muffler mounts of UAV engines involve using an auxiliary device to fix each of the four mounts in a designated position, and then welding the mounts to the cylinder surface from different angles. This not only makes mounting and dismounting the mounts cumbersome and inaccurate in positioning, but also hinders automated welding.

[0003] Clearly, the existing welding methods for drone engine muffler lugs have problems such as cumbersome lug installation and removal, inaccurate positioning, and difficulty in automating welding. Summary of the Invention

[0004] To address the problems of cumbersome mounting and dismounting of the muffler lugs in existing UAV engine welding methods, inaccurate positioning, and lack of automation, this utility model proposes a welding fixture for UAV engine muffler lugs.

[0005] This utility model relates to a welding fixture for welding the muffler support lugs of a drone engine, comprising a base plate, a cylindrical body mechanism, an exhaust port mechanism, and a support lug mechanism. The base plate is rectangular. The cylindrical body mechanism is located in the middle of the base plate and includes: a support plate, an end cap support, a cylinder seat I, a cylinder I, a gear I, a motor seat I, a motor I, and a gear II. The support plate is a rectangular plate consisting of two pieces, symmetrically fixed on both sides of the middle of the base plate, with a coaxial pivot hole at the upper end of the support plate. The front end of the end cap support has a convex-concave structure matching the shape and size of the muffler end cap, and the rear end has a pivot. The end cap support consists of two pieces, mirror-symmetrically mounted on the pivot holes at the upper end of the support plate. Inside; the cylinder seat I is fixed to the outside of the right support plate; the cylinder I is fixed on the cylinder seat I, and the piston of the cylinder I is fixedly connected to the rotating shaft supported by the right end cover; the gear I is fixed to the end of the rotating shaft supported by the left end cover; the motor seat I is fixed to the outside of the left support plate; the motor I is fixed on the motor seat I; the gear II is fixed on the rotating shaft of the motor I and meshes with the gear I; the exhaust port mechanism is located on the right rear side of the base plate, including the cylinder seat II, the cylinder II, and the positioning column; the cylinder seat II is a long rectangular bent shape, the bent section is vertically fixed to the base plate, and the middle of the bent section is provided with a piston hole, and the axis of the piston hole is... The angle with the horizontal plane is α; the cylinder II is fixed to the back of the bent front section of the cylinder seat II, and its piston passes through the piston hole; the positioning column is coaxially fixed to the piston end of the cylinder II, and its front end is provided with a step whose size matches the exhaust hole of the cylinder; the support lug mechanism is set on the front side of the base plate, including: slide rail, slide seat, motor seat II, motor II, gear III, cylinder seat III, cylinder III, support lug guide box and push rod; there are two slide rails, arranged vertically and fixed on the front side of the two support plates; the lower slide rail is round, the upper slide rail is rectangular, and a rack is provided on the upper surface of the upper slide rail; the slide seat is rectangular and slidably mounted on the slide rail; the... Motor base II is fixed to the front surface of the slide block; motor II is fixed to motor base II; gear III is fixed to the end of the motor II shaft and meshes with the rack of the upper slide rail; cylinder base III is fixed to the upper surface of the slide block; cylinder III is fixed to cylinder base III, and the piston passes through cylinder base III and points to the rear; the support lug guide box is long and vertically fixed to the front end of cylinder base III; the shape and size of the hollow cross section of the support lug guide box match the outer contour of the vertically placed support lug; the push rod is horizontally installed directly below the support lug guide box, with its rear end connected to the piston end of cylinder III, and its front end provided with a claw whose shape and size match the support lug crossbeam.

[0006] Furthermore, a cylindrical support plate is provided in the middle of the support plate; the cylindrical support plate consists of two pieces, fixed between the two support plates at a distance; an arc-shaped notch matching the outer circumference of the cylindrical body is provided above the cylindrical support plate; and the axis of the arc-shaped notch is coaxial with the pivot hole on the support plate.

[0007] Furthermore, a permanent magnet is provided on the inner side of the front end face of the gripper.

[0008] The beneficial technical effect of this utility model of welding fixture for drone engine muffler lugs is that the fixture ensures accurate positioning and clamping of each lug, facilitates welding operations, and lays the foundation for automated welding of drone engine muffler lugs. Attached Figure Description

[0009] Appendix Figure 1 This is a three-dimensional schematic diagram of the welding of the muffler support lugs for a drone engine;

[0010] Appendix Figure 2 This is a schematic diagram showing the distribution of the muffler lugs on a drone engine;

[0011] Appendix Figure 3 This is a three-dimensional schematic diagram of the welding fixture for the muffler support lug of the UAV engine according to this utility model;

[0012] Appendix Figure 4 This is a three-dimensional schematic diagram of the welding fixture for the muffler support lug of the UAV engine of this utility model from another angle.

[0013] Appendix Figure 5 This is a three-dimensional schematic diagram of the ear-support pushing part of the ear-support mechanism of this utility model;

[0014] Appendix Figure 6 This is a three-dimensional schematic diagram of the push rod and the support lug of the support lug mechanism of this utility model;

[0015] Appendix Figure 7 This is a three-dimensional schematic diagram of the welding state of the welding fixture for the muffler support lug of the UAV engine according to this utility model.

[0016] In the diagram, a is the muffler body, b is the end cap, c is the support lug, and d is the exhaust port; 1 is the base plate, 2 is the body mechanism, 2-1 is the support plate, 2-2 is the end cap support, 2-4 is the cylinder seat I, 2-5 is the cylinder I, 2-6 is the gear I, 2-7 is the motor seat I, 2-8 is the motor I, and 2-9 is the gear II; 3 is the exhaust port mechanism, 3-1 is the cylinder seat II, 3-2 is the cylinder II, and 3-3 is the positioning pin; 4 is the support lug mechanism, 4-1 is the slide rail, 4-2 is the slide block, 4-3 is the motor seat II, 4-4 is the motor II, 4-5 is the gear III, 4-6 is the cylinder seat III, 4-7 is the cylinder III, 4-8 is the support lug guide box, and 4-9 is the push rod.

[0017] The welding fixture for the muffler support lug of the UAV engine of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0018] See appendix Figures 3-6As shown in the figure, the welding fixture for the muffler support lugs of the UAV engine of this utility model includes: a base plate 1, a cylindrical body mechanism 2, an exhaust port mechanism 3, and a support lug mechanism 4; the base plate is a rectangular plate; the cylindrical body mechanism is located in the middle of the base plate and includes: a support plate 2-1, an end cover support 2-2, a cylinder seat I 2-4, a cylinder I 2-5, a gear I 2-6, a motor seat I 2-7, a motor I 2-8, and a gear II 2-9; the support plate is a rectangular plate and consists of two pieces, symmetrically fixed on both sides of the middle of the base plate, and a coaxial rotating shaft hole is provided at the upper end of the support plate; the front end of the end cover support is provided with a convex and concave structure matching the shape and size of the muffler end cover, and the rear end is provided with a rotating shaft; the end cover support consists of two pieces. The cylinder seat I is fixed to the outside of the right side support plate; the cylinder I is fixed to the cylinder seat I, and the piston of the cylinder I is fixedly connected to the rotating shaft supported by the right end cover; the gear I is fixed to the end of the rotating shaft supported by the left end cover; the motor seat I is fixed to the outside of the left side support plate; the motor I is fixed to the motor seat I; the gear II is fixed to the rotating shaft of the motor I and meshes with the gear I; the exhaust port mechanism is located on the right rear side of the base plate, including cylinder seat II 3-1, cylinder II 3-2 and positioning column 3-3; the cylinder seat II is a long rectangular bent shape, the bent section is vertically fixed to the base plate, and the middle of the bent section is provided with a piston hole. The piston hole axis forms an angle α with the horizontal plane; the cylinder II is fixed on the back of the bent front section of the cylinder seat II, and its piston passes through the piston hole; the positioning column is coaxially fixed on the piston end of the cylinder II, and its front end is provided with a step whose size matches the exhaust hole of the cylinder; the support mechanism is set on the front side of the base plate, including: slide rail 4-1, slide seat 4-2, motor seat II 4-3, motor II 4-4, gear III 4-5, cylinder seat III 4-6, cylinder III 4-7, support guide box 4-8 and push rod 4-9; there are two slide rails, arranged vertically and fixed on the front side of the two support plates; the lower slide rail is round, the upper slide rail is rectangular, and a rack is provided on the upper surface of the upper slide rail; The slide block is rectangular and slidably mounted on a slide rail; the motor base II is fixed to the front surface of the slide block; the motor II is fixed to the motor base II; the gear III is fixed to the end of the motor II shaft and meshes with the rack of the upper slide rail; the cylinder base III is fixed to the upper surface of the slide block; the cylinder III is fixed to the cylinder base III, and the piston passes through the cylinder base III pointing rearward; the lug guide box is elongated and vertically fixed to the front end of the cylinder base III; the shape and size of the hollow cross-section of the lug guide box match the outer contour of the vertically placed lug; the push rod is horizontally installed directly below the lug guide box, with its rear end connected to the piston end of the cylinder III, and its front end equipped with a gripper whose shape and size match the crossbeam of the lug. This utility model's welding fixture for the muffler lugs of a UAV engine utilizes the cooperation of the lug mechanism and the cylinder mechanism, enabling accurate positioning and clamping of each lug, and facilitating the welding operation.During the welding process, the drone engine muffler cylinder is placed between the left and right end cap supports. Cylinder I is activated, and its piston pushes the right end cap support forward, clamping the muffler cylinder between the supports. Because the front ends of the left and right end cap supports have convex and concave structures matching the shape and size of the muffler end caps, the muffler cylinder is securely and accurately clamped, ensuring that the muffler cylinder axis is coaxial with the end cap axis. The exhaust port on the muffler cylinder is aligned with the positioning pin of the exhaust port mechanism. Cylinder II is activated, and its piston pushes the positioning pin, inserting its front end into the exhaust port on the muffler cylinder, achieving circumferential positioning of the muffler cylinder. Cylinder III is activated, and its piston pushes the push rod forward, pushing the lug onto the outer wall of the muffler cylinder until it makes tight contact; welding of this lug begins, thus completing the welding of the first lug. Since the angle between the axis of the positioning column and the horizontal plane is α, the angle between the axis of the through hole of the support lug and the axis of the exhaust hole can be guaranteed to be α. Motor II is activated, driving the slide block to move a set distance to the left on the slide rail; cylinder III is activated, its piston pushing the push rod forward, pushing the support lug onto the outer wall of the muffler cylinder and making close contact; welding of this support lug begins, thus completing the welding of the second support lug. Cylinder II is activated, its piston driving the positioning column to exit the exhaust hole on the muffler cylinder; motor I is activated, driving the right end cover support and the muffler cylinder to rotate by an angle β; cylinder III is activated, its piston pushing the push rod forward, pushing the support lug onto the outer wall of the muffler cylinder and making close contact; welding of this support lug begins, thus completing the welding of the third support lug. Motor II is activated, driving the slide block to move a set distance to the right on the slide rail. Cylinder III is activated, its piston pushing the push rod forward, pressing the lug against the outer wall of the muffler cylinder until it makes tight contact. Welding of this lug begins, completing the welding of the fourth lug. Cylinder I is activated, its piston retracting the right end cap support to its original position, removing the muffler cylinder. The lug welding of this muffler cylinder is now complete. Because the lug mechanism and cylinder mechanism work together to transmit, position, and clamp the lugs, and the welding angle and trajectory of the welding torch are essentially the same, the welding is relatively simple and easily automated, laying the foundation for automated welding of muffler lugs for UAV engines.

[0019] As one of the preferred technical solutions, a cylindrical support plate 2-3 is provided in the middle of the support plate; the cylindrical support plate consists of two pieces, fixed at an interval between the two support plates; an arc-shaped notch matching the outer circumference of the cylindrical body is provided above the cylindrical support plate; and the axis of the arc-shaped notch is coaxial with the pivot hole on the support plate. This allows for initial positioning when placing the muffler cylinder, making it more convenient and accurate for the left and right end caps to support and clamp the muffler cylinder, and reducing the likelihood of errors or deviations.

[0020] As one of the preferred technical solutions, a permanent magnet is provided on the inner side of the front end face of the gripper. The permanent magnet allows for stable and accurate capture of the ear supports falling from the ear support guide box, ensuring the ear supports are pushed into a predetermined posture and make close contact with the outer wall of the muffler cylinder. Clearly, the upper feed inlet of the ear support guide box can be connected to a commonly used feeding device, thereby enabling continuous feeding of the ear supports.

[0021] Obviously, the beneficial technical effect of the welding fixture for the muffler support of the UAV engine of this utility model is that the fixture ensures the accurate positioning and clamping of each support, facilitates the welding operation, and lays the foundation for the automated welding of the muffler support of the UAV engine.

Claims

1. A welding fixture for a muffler support lug of a drone engine, characterized in that, The welding fixture includes: a base plate, a cylindrical body mechanism, an exhaust port mechanism, and a support lug mechanism; the base plate is a rectangular plate; the cylindrical body mechanism is located in the middle of the base plate and includes: a support plate, an end cap support, a cylinder seat I, a cylinder I, a gear I, a motor seat I, a motor I, and a gear II; the support plate is a rectangular plate and consists of two pieces, symmetrically fixed on both sides of the middle of the base plate, with a coaxial pivot hole at the upper end of the support plate; the front end of the end cap support has a convex-concave structure matching the shape and size of the muffler end cap, and a pivot is provided at the rear end; there are two end cap supports, mirror-symmetrically installed in the pivot holes at the upper end of the support plate; the cylinder seat I is fixed on the right... The outer side of the side support plate; cylinder I is fixed on cylinder seat I, and the piston of cylinder I is fixedly connected to the rotating shaft supported by the right end cover; gear I is fixed to the end of the rotating shaft supported by the left end cover; motor seat I is fixed on the outer side of the left support plate; motor I is fixed on motor seat I; gear II is fixed on the rotating shaft of motor I and meshes with gear I; the exhaust port mechanism is located on the right rear side of the base plate, including cylinder seat II, cylinder II and positioning column; cylinder seat II is a long rectangular bent shape, the bent section is vertically fixed on the base plate, and the middle of the bent section is provided with a piston hole, and the angle between the axis of the piston hole and the horizontal plane is . α; The cylinder II is fixed to the back of the bent front section of the cylinder seat II, and its piston passes through the piston hole; The positioning pin is coaxially fixed to the piston end of the cylinder II, and its front end is provided with a step whose size matches the exhaust hole of the cylinder; The support mechanism is located on the front side of the base plate and includes: a slide rail, a slide block, a motor seat II, a motor II, a gear III, a cylinder seat III, a cylinder III, a support guide box, and a push rod; There are two slide rails, arranged vertically and fixed to the front side of the two support plates; The lower slide rail is round, and the upper slide rail is rectangular, with a rack on the upper surface of the upper slide rail; The slide block is rectangular and slidably mounted on the slide rail; The motor seat II The motor II is fixed to the front surface of the slide block; the motor II is fixed to the motor base II; the gear III is fixed to the end of the motor II shaft and meshes with the rack of the upper slide rail; the cylinder base III is fixed to the upper surface of the slide block; the cylinder III is fixed to the cylinder base III, and the piston passes through the cylinder base III and points to the rear; the support guide box is long and narrow, and is vertically fixed to the front end of the cylinder base III; the shape and size of the hollow cross section of the support guide box match the outer contour of the vertically placed support ear; the push rod is horizontally installed directly below the support guide box, the rear end is connected to the piston end of the cylinder III, and the front end is provided with a claw whose shape and size match the support ear crossbeam.

2. The welding fixture for the muffler support lug of the UAV engine according to claim 1, characterized in that, A cylindrical support plate is provided in the middle of the support plate; there are two cylindrical support plates, which are fixed between the two support plates at a distance; an arc-shaped notch matching the outer circumference of the cylinder is provided above the cylindrical support plate; and the axis of the arc-shaped notch is coaxial with the pivot hole on the support plate.

3. The welding fixture for the unmanned aerial vehicle engine muffler support lugs according to claim 1, characterized in that, A permanent magnet is provided on the inner side of the front end face of the gripper.

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