Aero-engine barrel-shaped thin-walled workpiece welding auxiliary tooling

Abstract

The utility model discloses aviation engine barrel shape thin wall work piece welding auxiliary frock, including frame body, still include: front chuck and tail chuck, front chuck and tail chuck set up respectively in the front side and rear side of frame body upper portion, be used for to the end fixed of thin wall work piece, support wheel, support wheel is provided with two groups and respectively matches front chuck and tail chuck and is used for to work piece support, sliding plate, located support wheel below and two ends are respectively embedded in the guide rail of frame body, be used for to shift support wheel position, the utility model discloses by setting up the elastic member who constitutes by vertical rod, spring etc.

Description

Technical Field

[0001] This utility model relates to the field of aerospace parts processing technology, specifically to auxiliary tooling for welding cylindrical thin-walled workpieces for aero-engines. Background Technology

[0002] In the manufacturing of high-end equipment such as aero-engines, circumferential welding of thin-walled cylindrical workpieces is a crucial process. These workpieces are typically fixed and supported using specialized circumferential welding fixtures. In the prior art, a typical fixture structure includes a frame, rotating chucks at both ends of the frame, and one or more sets of support roller assemblies located in the middle of the frame.

[0003] The standard workflow is as follows: First, the workpiece is hoisted to the approximate position using hoisting equipment. Then, the operator starts one end of the chuck to perform initial clamping. Next, the height and radial position of each set of support rollers are adjusted to ensure full contact with the outer wall of the workpiece and provide effective support. The other set of workpieces is then subjected to the same steps. The theoretical axes of the two sets of workpieces are aligned with the rotation axis of the chuck, and the welding points are aligned to meet the requirements of high-precision welding.

[0004] However, the aforementioned existing technology has a significant drawback that urgently needs to be addressed: the workpiece positioning and support adjustment process is overly reliant on manual labor, inefficient, and subject to uncertainty. Since the workpiece is in a free state after hoisting, its initial position deviates significantly from the ideal axis. Operators must rely on their sense of touch and experience to manually adjust the height of multiple support rollers one by one by observing the gaps and using measuring tools, which is quite time-consuming and labor-intensive. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, this utility model provides auxiliary tooling for welding cylindrical thin-walled workpieces of aero-engines.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a welding auxiliary fixture for cylindrical thin-walled workpieces of aero-engines, including a frame, and further comprising: A front chuck and a rear chuck are respectively located on the front and rear sides of the upper part of the frame and are used to fix the ends of thin-walled workpieces. Supporting rollers, wherein two sets of supporting rollers are provided and respectively cooperate with the front chuck and the tail chuck for supporting the workpiece; The skateboard, located below the support wheel and with both ends embedded in the guide rails of the frame, is used to move the position of the support wheel; The adapter components, located below the support rollers and facilitating quick contact between the support rollers and the workpiece surface, include: The elastic element, located below the support wheel and within the slide plate, is used to propel the support wheel upward using its own elasticity. A locking element is located below the slide plate and is used to lock the position after the support roller and the elastic element come into contact with the workpiece surface.

[0007] Preferably, the elastic element includes: A vertical rod, fixed below the support wheel and extending below the slide plate, is used to vertically guide the support wheel; A retaining ring is provided on the surface of the vertical bar and located below the slide plate; A spring, fixed to the upper part of the fixed ring, with its other end corresponding to the slide plate, is used to pull the fixed ring in conjunction with the vertical rod to drive the support wheel to rise vertically.

[0008] Preferably, the elastic element further includes: A friction sleeve is disposed in the slide plate and is on the same axis as the vertical rod. The slide rod is inserted into the friction sleeve and is used to provide friction force to the vertical rod when the spring is released elastically.

[0009] Preferably, the locking element includes: The sleeve is located under the slide plate. It has symmetrical threads on both sides inside and a handle on the surface. The upper end of the handle extends through to the top of the slide plate to facilitate personnel to adjust the sleeve. The control levers are of two types, with their opposite sides placed inside the sleeve. Each of the two control levers has a thread on its opposite side that matches the inner wall of the sleeve, and the two sets of threads mesh with each other. The abutment plate is provided in two sets and is located on opposite sides of the two control rods. The abutment plate is semi-circular and fits against the surface of the vertical rod.

[0010] Preferably, the surface of the vertical rod is provided with a plurality of snap-fit ​​patterns in a linear array, and the side of the abutment plate that contacts the vertical rod is provided with a raised strip that matches the snap-fit ​​patterns, and the raised strip is adapted to the snap-fit ​​patterns.

[0011] Preferably, the locking element further includes: The housing is located below the slide plate and is on the same axis as the vertical rod. The upper end of the spring is fixedly connected to the housing, and the control rod is inserted horizontally inside the housing. A transverse groove is formed above the control lever; A limit key is provided, which is set in the horizontal groove and whose upper end is fixedly connected to the inner wall of the housing, and is used to limit the control rod laterally.

[0012] Compared with the prior art, this utility model provides an auxiliary tooling for welding cylindrical thin-walled workpieces for aero-engines, which has the following beneficial effects: (1) By setting up elastic components consisting of vertical rods, springs, etc., the support wheel can be lifted to a certain height under the action of the spring restoring force in the initial state, and automatically and quickly complete the initial contact and fit between the support wheel and the outer wall of workpieces of different diameters. This transforms the tedious active debugging in the traditional process into adaptive matching, reducing the time for manual adjustment.

[0013] (2) After the elastic element adapts to fit the workpiece, by rotating the sleeve with symmetrical threads, the two control rods and their semi-circular abutment plates at the ends are driven to approach synchronously. The protrusions on the abutment plates are tightly engaged with the snap-fit ​​patterns on the surface of the vertical rod, which can immediately lock the position of the vertical rod and the support wheel rigidly. This effectively prevents the support position from loosening due to vibration or load changes during the welding process, and ensures the stability of the welding process. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure in the embodiment; Figure 2 This is a partial structural diagram of the support wheel in the embodiment; Figure 3 This is a bottom view of the supporting wheel structure in the embodiment; Figure 4 This is a schematic diagram of the structure of the elastic element and locking element in the embodiment; Figure 5 This is a schematic diagram of the transverse groove and the limiting key in the embodiment.

[0015] In the diagram: 100, frame; 110, front chuck; 120, support roller; 121, sliding plate; 130, rear chuck; 200, adapter component; 210, vertical rod; 211, retaining ring; 212, spring; 213, friction sleeve; 220, control rod; 221, sleeve; 222, abutment plate; 223, horizontal groove; 224, limit key; 225, housing. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] like Figure 1-5 As shown, this embodiment proposes a welding auxiliary fixture for cylindrical thin-walled workpieces of aero-engines, including a frame 100, and further comprising: The front chuck 110 and the rear chuck 130 are respectively located on the front and rear sides of the upper part of the frame 100, and are used to fix the two ends of the thin-walled workpiece. First, personnel use hoisting equipment to hoist the workpiece onto the fixture. Then, the operator starts the front chuck 110 or the tail chuck 130 to initially clamp one end of the workpiece. Support roller 120, two sets of support roller 120 are provided and respectively cooperate with front chuck 110 and tail chuck 130 for supporting workpiece; slide plate 121, located below support roller 120 and with both ends embedded in guide rail of frame 100, is used to move the position of support roller 120. The adapter component 200, located below the support roller 120 and facilitating quick contact between the support roller 120 and the workpiece surface, includes: An elastic element, located below the support wheel 120 and within the slide plate 121, is used to drive the support wheel 120 upward by utilizing its own elasticity. The support roller 120 is controlled to move upward and be positioned below the workpiece for supporting and limiting the workpiece. A locking element is provided below the slide plate 121 and is used to lock the position after the support roller 120 and the elastic element abut against the surface of the workpiece. The locking component includes: a sleeve 221, which is located below the slide plate 121. Symmetrical threads are provided on both sides inside the sleeve 221, and a handle is provided on the surface. The upper end of the handle extends through to the top of the slide plate 121 to facilitate personnel to adjust the sleeve 221. There are two control levers 220, with their opposite sides placed inside the sleeve 221. Each of the two control levers 220 has a thread on its opposite side that matches the inner wall of the sleeve 221, and the two sets of threads mesh with each other.

[0018] The elastic element includes: Vertical rod 210 is fixed below the support wheel 120 and extends below the slide plate 121 for vertical guidance of the support wheel 120; A retaining ring 211 is disposed on the surface of the vertical rod 210 and located below the slide plate 121; Spring 212 is fixed to the upper part of fixed ring 211, and the other end corresponds to slide plate 121. It is used to pull fixed ring 211 to cooperate with vertical rod 210 to drive support wheel 120 to rise vertically. It should be noted that before hoisting the tool, the operator needs to lower the support roller 120 to a suitable low height to make room for the workpiece end to be fixed. The specific operation is as follows: the operator rotates the sleeve 221 counterclockwise by the handle to release the two abutment plates 222 from locking the vertical rod 210, then presses the support roller 120 down to a height lower than the workpiece, and then rotates the sleeve 221 clockwise so that the abutment plates 222 abut against the vertical rod 210 to pre-position the support roller 120 in a suitable position below the workpiece. Then the operator can use the hoisting equipment to hoist the workpiece above this tool. The upward adjustment operation of the support roller 120 is as follows: the operator turns the sleeve 221 counterclockwise, so that the sleeve 221 engages with the two control rods 220 and moves them closer to each other when rotating, and controls the abutment plate 222 to move away from the vertical rod 210. At this time, the vertical rod 210 is released from restraint, and the spring 212 will drive the vertical rod 210 to return to its original position by means of the fixing ring 211. The vertical rod 210 will drive the support roller 120 to move upward until the support roller 120 contacts the surface of the workpiece.

[0019] The abutment plate 222 is provided in two sets and is located on opposite sides of the two control rods 220. The abutment plate 222 is semi-circular and fits against the surface of the vertical rod 210. The surface of the vertical rod 210 is provided with multiple snap-fit ​​patterns in a linear array. The side of the abutment plate 222 that contacts the vertical rod 210 is provided with a protrusion that matches the snap-fit ​​patterns. The protrusion and the snap-fit ​​patterns are adapted to lock when the abutment is tightened. After the support roller 120 contacts the lower surface of the workpiece, the operator immediately rotates the sleeve 221 clockwise. The sleeve 221 will then control the two control rods 220 to move away from each other, and the abutment plate 222 will abut against the surface of the vertical rod 210 again. By using the interlocking of the convex strip and the snap-fit ​​pattern, the vertical rod 210 will be height-locked. Thus, the support roller 120 and the workpiece are adaptively matched, reducing the operator's debugging time. After all the support rollers 120 are locked, the welding program can be started. The front chuck 110 drives the workpiece to rotate at a constant speed to perform circumferential welding.

[0020] The locking mechanism also includes: The housing 225 is located below the slide plate 121 and is on the same axis as the vertical rod 210. The upper end of the spring 212 is fixedly connected to the housing 225, and the control rod 220 is inserted horizontally inside the housing 225. A transverse groove 223 is formed above the control lever 220; Limit key 224 is set in the transverse groove 223 and its upper end is fixedly connected to the inner wall of the housing 225, and is used to limit the control rod 220 laterally; The elastic element also includes: Friction sleeve 213 is disposed in slide plate 121 and is on the same axis as vertical rod 210. Slide rod is inserted into friction sleeve 213 and is used to provide friction force to vertical rod 210 when spring 212 is released elastically. The friction sleeve 213 is embedded in the slide plate 121, through which the vertical rod 210 passes. It can provide damping for the vertical rod 210 when the spring 212 is activated, so as to prevent the support wheel 120 from jumping violently under no load and ensure smooth lifting process.

[0021] In actual operation, the operator first rotates the sleeve 221 counterclockwise to release the two abutment plates 222 from locking the vertical rod 210. Then, the support roller 120 is lowered below the workpiece height, and the sleeve 221 is rotated clockwise to abut the abutment plates 222 against the vertical rod 210, thus pre-positioning the support roller 120 at a suitable position below the workpiece. The operator can then use hoisting equipment to lift the workpiece above this fixture. The operator then activates the chuck to initially clamp one end of the workpiece. At this point, the operator can again rotate the sleeve 221 counterclockwise, causing the sleeve 221 to engage with the two control rods 220 as it rotates, bringing them closer together and controlling the abutment plates 222 away from the vertical rod 210. At this point, the vertical rod 210 is released from its restraints, and the spring 2... 12 will drive the vertical rod 210 to return to its original position by fixing the ring 211. The vertical rod 210 will drive the support wheel 120 to move upward until the support wheel 120 contacts the surface of the workpiece. After the support wheel 120 contacts the lower surface of the workpiece, the operator will immediately rotate the sleeve 221 clockwise. The sleeve 221 will then control the two control rods 220 to move away from each other. The abutment plate 222 will then abut against the surface of the vertical rod 210 again. By using the interlocking of the convex strip and the snap-fit ​​pattern, the vertical rod 210 will be locked at a height. This achieves the effect of adaptive matching between the support wheel 120 and the workpiece and reduces the operator's debugging time. After all the support wheels 120 are locked, the welding program can be started. The front chuck 110 drives the workpiece to rotate at a constant speed to perform circumferential welding.

[0022] In the description of this utility model, the terms "first," "second," "another," and "yet another" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0024] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A welding auxiliary tooling for cylindrical thin-walled workpieces of aero-engines, characterized in that, include: The frame (100) also includes: The front chuck (110) and the rear chuck (130) are respectively located on the front and rear sides of the upper part of the frame (100) and are used to fix the ends of thin-walled workpieces. Support roller (120), the support roller (120) is provided in two sets and respectively cooperates with the front chuck (110) and the tail chuck (130) to support the workpiece; The skateboard (121) is located below the support wheel (120) and its two ends are respectively embedded in the guide rail of the frame (100) for transferring the position of the support wheel (120); An adapter component (200), positioned below the support roller (120) and facilitating quick contact between the support roller (120) and the workpiece surface, includes: An elastic element, located below the support wheel (120) and within the slide plate (121), is used to propel the support wheel (120) upward using its own elasticity; A locking element is provided below the slide plate (121) and is used to lock the position after the support roller (120) and the elastic element come into contact with the workpiece surface.

2. The auxiliary tooling for welding cylindrical thin-walled workpieces of aero-engines according to claim 1, characterized in that: The elastic element includes: A vertical rod (210) is fixed below the support wheel (120) and extends below the slide plate (121) to guide the support wheel (120) vertically. A retaining ring (211) is provided on the surface of the vertical rod (210) and located below the slide plate (121); Spring (212) is fixed to the upper part of the fixing ring (211), and the other end corresponds to the slide plate (121). It is used to pull the fixing ring (211) in conjunction with the vertical rod (210) to drive the support wheel (120) to rise vertically.

3. The auxiliary tooling for welding cylindrical thin-walled workpieces of aero-engines according to claim 2, characterized in that: The elastic element also includes: Friction sleeve (213) is set in slide plate (121) and is on the same axis as vertical rod (210). The slide rod is inserted in friction sleeve (213) and is used to provide friction force to vertical rod (210) when spring (212) is released elastically.

4. The auxiliary tooling for welding cylindrical thin-walled workpieces of aero-engines according to claim 2, characterized in that: Locking components include: The sleeve (221) is located below the slide plate (121). Symmetrical threads are provided on both sides inside the sleeve, and a handle is provided on the surface. The upper end of the handle extends through to the top of the slide plate (121) to assist personnel in adjusting the sleeve (221). There are two control rods (220), and their opposite sides are placed inside the sleeve (221). The opposite sides of the two control rods (220) are provided with threads that match the inner wall of the sleeve (221), and the two sets of threads mesh with each other. The abutment plate (222) is provided in two sets and is located on opposite sides of the two control levers (220). The abutment plate (222) is semi-circular and fits against the surface of the vertical rod (210).

5. The auxiliary tooling for welding cylindrical thin-walled workpieces of aero-engines according to claim 2, characterized in that: The surface of the vertical rod (210) is provided with multiple snap-fit ​​patterns in a straight line array. The side of the abutment plate (222) that contacts the vertical rod (210) is provided with a raised strip that matches the snap-fit ​​patterns. The raised strip is adapted to the snap-fit ​​patterns.

6. The auxiliary tooling for welding cylindrical thin-walled workpieces of aero-engines according to claim 2, characterized in that: The locking mechanism also includes: The housing (225) is located below the slide plate (121) and is on the same axis as the vertical rod (210). The upper end of the spring (212) is fixedly connected to the housing (225). The control rod (220) is inserted horizontally inside the housing (225). A transverse groove (223) is provided above the control lever (220); Limit key (224) is set in the transverse groove (223) and its upper end is fixedly connected to the inner wall of the housing (225) for lateral limiting of the control rod (220).

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