CN116117425A - Cylinder welding positioning tool and welding method - Google Patents

Abstract

The invention belongs to the technical field of welding, and particularly relates to a welding positioning tool, which comprises the following components: the fixing components are of a circular ring structure on the whole, and are sleeved on the periphery of the cylinder to be welded during positioning; a plurality of arc support feed units, each fixed subassembly disposes at least two arc support feed units, each arc support feed unit further includes: the arc supporting part is provided with an arc supporting surface matched with the arc of the appearance of the cylinder to be welded; and the feeding assembly penetrates through the circular ring side wall of the movable connection fixing assembly and is connected with the arc supporting part, and when a workpiece is processed, the feeding assembly enables the arc supporting surface of the arc supporting part to be close to and propped against the outer wall of the cylinder to be welded in a feedable mode. The invention solves the problems of large welding deformation and difficult guarantee of roundness of the cylindrical metal shell during the coil welding.

Description

Cylinder welding positioning tool and welding method

Technical Field

The invention belongs to the technical field of welding, and particularly relates to a cylinder welding positioning tool and a welding method.

Background

The aerospace products involve a large number of metal shells, and most of the structural types are gyrorotor. Wherein the shell is machined after casting. The cylindrical shell is changed into a coil welding mode, so that the cost can be greatly reduced, and the processing period can be shortened. Firstly, calculating the unfolding material of the cylindrical shell before the rolling welding construction, cutting the plate according to the calculated unfolding material, rolling the plate, opening a welding slope, and welding the butt joint part of the groove firmly and correcting the shape by welding, thereby obtaining the cylindrical shell. Meanwhile, aiming at the longer cylinder shell, two shorter cylinder shells can be manufactured separately, then the cylinder openings of the two cylinder shells are aligned, and finally positioning welding is carried out.

The following problems exist in the welding process of the prior art:

(1) The cylindrical metal shell is directly welded by experience, so that the welding deformation is large, and the roundness is difficult to ensure;

(2) The butt welding and butt welding process of the cylindrical metal shell is inconvenient, the misalignment is easy to cause, and the coaxiality is difficult to ensure.

Disclosure of Invention

Aiming at the defects existing in the related art, the invention provides a cylinder welding positioning tool and a cylinder welding method, which are used for solving the problems of large welding deformation and difficult guarantee of roundness of a cylinder metal shell.

A cylinder weld locating fixture, comprising: the fixing components are of a circular ring structure on the whole, and are sleeved on the periphery of the cylinder to be welded during positioning; a plurality of arc support feed units, each fixed subassembly disposes at least two arc support feed units, each arc support feed unit further includes: the arc supporting part is provided with an arc supporting surface matched with the arc of the appearance of the cylinder to be welded; the feeding assembly penetrates through the circular ring side wall of the movable connection fixing assembly and is connected with the arc supporting portion, and when a workpiece is machined, the feeding assembly enables the arc supporting surface of the arc supporting portion to be close to and propped against the outer wall of the cylinder to be welded in a feeding mode.

The technical scheme realizes the positioning of the cylinder to be welded, reduces deformation quantity and ensures that the cylinder to be welded is kept on the same roundness.

In some of these embodiments, each securing assembly comprises: two ring-shaped structures, which are sleeved on the periphery of the cylinder to be welded during processing; the plurality of support plates are fixedly connected with the two annular structures, and the number of the support plates of each fixed assembly corresponds to the number of the arc support feeding units configured by each fixed assembly. The technical scheme realizes the fixation between the arc support part and the cylinder to be welded, and the manuscript-determining arc support part supports the cylinder to be welded.

In some of these embodiments, each arc bracket feed unit further comprises: the limiting assembly is a rod body with scales on two surfaces, and the two rod bodies are symmetrically arranged and fixed on the opposite surfaces of the arc supporting surface and penetrate through the supporting plate. The technical scheme realizes that the feeding component does not deviate when feeding along the radial direction, thereby ensuring the fit between the arc support and the welding cylinder; in addition, the scales on the limiting rod can read the diameters of the corresponding inner circles at present, so that the concentricity of a plurality of groups of arc support feeding units is ensured.

In some of these embodiments, the feed assembly comprises: adjust pole and handle, adjust the pole further to include: a club head; one end of the threaded rod body is connected with the rod head, and the other end of the threaded rod body penetrates through the supporting plate and is connected with the arc supporting part after being connected with the supporting plate in a threaded manner; the handle is arranged on the rod head, and the handle can be rotated to drive the adjusting rod to push the arc supporting part. The technical scheme realizes the installation of the feeding component and the positioning component.

In some of these embodiments, the threaded shank is connected to the arced bracket bearing. The technical scheme realizes the stability of the arc support part and ensures that the arc support part does not rotate along with the rotation of the feeding assembly.

In some embodiments, the device further comprises a bearing cover, the bearing cover is arranged at the lower end of the threaded rod body, the joint of the threaded rod body and the arc supporting part is sealed, and a sealing gasket is further arranged between the bearing cover and the arc supporting part. The technical scheme realizes the sealing of the bearing.

In some of these embodiments, the bearing cap is secured to the arc bracket by screws. The stability of feeding subassembly has been improved to this technical scheme.

In some embodiments, the number of arc support feeding units is three or four, and the three or four arc support feeding units are uniformly distributed on the fixed assembly. According to the technical scheme, the supporting force of the arc support feeding unit on the cylinder to be welded is improved.

In some embodiments, the number of the fixing assemblies is three or four groups, and the three or four groups of fixing assemblies are uniformly distributed on the cylinder to be welded. The technical scheme realizes the coaxiality of the cylinder to be welded.

A cylinder welding method, apply the above-mentioned cylinder to weld and position the frock, the welding method includes:

the installation step comprises the following steps: when butt welding is carried out, the fixing assembly is sleeved on the peripheries of the two cylinder metal shells, and the two circular ring structures are symmetrically placed by taking the welding seam as a center;

when the coil welding is carried out, a plurality of fixing components are sleeved on the periphery of the cylinder to be welded, and the arc support feeding unit and the welding line are dislocated;

positioning:

the arc support part is propped against the periphery of the cylindrical metal shell or the cylinder to be welded, the handle is rotated to drive the arc support part to feed, and scales on the limiting assembly are referenced until each group of arc support feeding units reach the preset diameter scales.

According to the technical scheme, butt welding of the cylindrical metal shell is realized, and the problems that the butt welding process is easy to cause misalignment and coaxiality is difficult to guarantee are solved.

Based on the technical scheme, the cylinder welding positioning tool solves the problems that the welding deformation is large and the roundness is difficult to guarantee in the cylinder metal shell coil welding; the cylinder welding method solves the problems that butt welding of the cylinder metal shell is inconvenient, misalignment is easy to occur and coaxiality is difficult to guarantee.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a schematic view of a cylinder welding positioning tool of the present invention when installed on a cylinder to be welded;

FIG. 2 is a front view and a left view of a cylinder welding positioning tool fixing assembly of the present invention;

FIG. 3 is a cross-sectional view of an arc bracket feeding unit of a cylinder welding positioning tool of the invention;

FIG. 4 is a schematic diagram of a feeding assembly of a cylinder welding positioning tool according to the present invention;

FIG. 5 is a perspective view of a cylinder welding positioning tool arc bracket feeding unit and a fixed assembly;

FIG. 6 is a schematic view of a cylinder welding method positioning tool according to the present invention when the positioning tool is installed on a cylinder to be welded;

in the figure:

1. a cylinder to be welded; 2. a fixing assembly; 3. an arc support feeding unit; 4. a cylindrical metal housing; 5. welding seams; 21. a circular ring; 22. a support plate; 23. a threaded hole; 24. a limiting hole; 31. an arc support part; 32. a feed assembly; 321. a club head; 322. a threaded rod body; 33. a limit component; 34. a bearing; 35. a rubber pad; 36. a bearing cap; 37. a screw; 38. a handle.

Detailed Description

The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 4, the present invention provides a cylinder welding positioning tool, including:

the fixing assemblies 2 are of a circular ring structure on the whole and are sleeved on the periphery of the cylinder 1 to be welded during positioning; it will be appreciated that the cylinder 1 to be welded passes through the central hollow of the fixed assembly 2.

A plurality of arc tray feeding units 3, each fixed assembly 2 is configured with at least two of the arc tray feeding units 3, each arc tray feeding unit 3 further comprising:

the arc supporting part 31 is provided with an arc supporting surface matched with the shape radian of the cylinder 1 to be welded; it will be appreciated that the arc supporting surface can be abutted against the cylinder 1 to be welded, so that the cylinder 1 to be welded is exactly clamped on the surface of the arc supporting surface. In the embodiment of the scheme, the opposite surface of the arc support surface is set to be a plane.

The feeding component 32 penetrates through and is movably connected with the circular ring side wall of the fixing component 2 and then is connected with the arc supporting portion 31, and when a workpiece is machined, the feeding component 32 enables the arc supporting surface of the arc supporting portion 31 to be close to and support against the outer wall of the cylinder 1 to be welded in a feeding mode. It will be appreciated that the feeding assembly 32 can drive the arc support 31 to adjust the distance radially, and the arc support surface is kept fixed against the cylinder 1 to be welded after adjustment.

Further, the plurality of fixing members 2 are provided at different positions of the cylinder 1 to be welded, for example, at the left and right end positions of the cylinder 1 to be welded in the present embodiment, so that the cylinder 1 to be welded can be kept horizontal, and further the whole cylinder 1 to be welded can be kept at the same roundness, reducing the deformation amount of welding. The arc support feeding units 3 enable the cylinder 1 to be welded to bear support force at a plurality of positions on the same roundness, the support force at the plurality of positions is converged towards the center of the cylinder 1 to be welded, the diameter of the cylinder is kept unchanged, the roundness of the cylinder 1 to be welded is kept, and the deformation of the cylinder is reduced.

The above-described exemplary embodiments achieve positioning of the cylinder to be welded, reduce the amount of deformation, and keep the cylinder to be welded on the same roundness.

As shown in fig. 2, in some embodiments, each securing assembly 2 includes:

two ring 21-shaped structures are sleeved on the periphery of the cylinder 1 to be welded during processing; it will be appreciated that the diameter of the inner circles of the two rings is slightly greater than the diameter of the cylinder 1 to be welded, ensuring the spatial position of the arc support 31 in the back and forth motion.

The support plates 22 are fixedly connected with two annular ring 21-shaped structures, and the number of the support plates 22 of each fixing assembly 2 corresponds to the number of the arc support feeding units 3 configured by each fixing assembly 2. It will be appreciated that the support plate 22 connects two annular ring 21 shaped structures to form concentric rings with a distance therebetween, for example in this embodiment the support plate 22 is disposed on the inner wall of the two annular ring 21 shaped structures at the same height.

Further, the number of the support plates 22 and the arc tray feeding units 3 is that one arc tray feeding unit 3 is arranged on each support plate 22.

As shown in fig. 5, in some embodiments, each arc tray feeding unit 3 further includes:

the limiting component 33 is a rod body with scales on two surfaces, and the two rod bodies are symmetrically arranged and fixed on the opposite surfaces of the arc supporting surface and penetrate through the supporting plate 22. It can be understood that the two rod bodies of the limiting component 33 are symmetrically arranged with the feeding component 32 as a center, and all the two rod bodies are connected to the opposite surfaces of the arc supporting surface and all penetrate through the supporting plate 22.

Further, the limiting component 33 can ensure that the feeding component 31 does not deviate when feeding along the radial direction, so as to ensure that the arc supporting part 31 is attached to the welding cylinder 1; in addition, the scales on the limiting component 32 can read the diameters of the corresponding inner circles at present, so that the concentricity of the plurality of groups of arc support feeding units 3 is ensured.

As shown in fig. 2, 4, in some embodiments, the feed assembly 31 includes:

an adjustment lever and handle 38, the adjustment lever further comprising: a head 321, a threaded shank 322;

one end of the threaded rod body 322 is connected with the rod head 321, and the other end penetrates through and is connected with the support plate 22 in a threaded manner and then is connected with the arc supporting part 31; the handle 38 is mounted on the club head 321, and the handle 38 can drive the adjusting rod to push the arc supporting part 31. It can be understood that the club head 321 and the threaded rod 322 are in an integrated structure, and the club head 321 can rotate to drive the threaded rod 322 to rotate; and the threaded rod 322 is in threaded connection with the supporting plate 22, so that the supporting force of the arc supporting feeding unit 3 can be ensured.

Further, a threaded hole 23 is provided at the center of each support plate 22, and two limiting holes 24 are symmetrically provided around the threaded hole 23. The threaded rod 322 body is connected with the backup pad 22 through the screw hole 23, and spacing subassembly 33 is connected with backup pad 22 through spacing hole 24.

In some embodiments, as shown in fig. 3, a threaded rod 322 is coupled to the arced bracket 31 bearing 34. It will be appreciated that the threaded rod 322 is connected to the opposite side of the arc supporting surface of the arc supporting portion 31, and the bearing 34 can ensure that the arc supporting portion 31 does not rotate with the rotation of the adjusting lever, i.e. the arc supporting portion 31 only moves radially.

As shown in fig. 3, in some embodiments, the bearing cover 36 is further included, the bearing cover 36 is disposed at a lower end of the threaded rod 322, a connection between the threaded rod 322 and the arc supporting portion 31 is sealed, and a sealing gasket 35 is further disposed between the bearing cover 36 and the arc supporting portion 31. Further, the bearing cap 36 provides a sealing function to keep the inner bearing 34 from falling out when a different arc bracket 31 needs to be replaced to accommodate a different sized welded cylinder.

As shown in fig. 3, in some embodiments, bearing cap 36 is secured to arced bracket 31 by screws 37. It will be appreciated that the bearing cap 36, which is secured by the screw 37, prevents the adjustment lever from falling off.

As shown in fig. 1 and 3, in some embodiments, the number of arc support feeding units 3 is three or four groups, and the three or four groups of arc support feeding units 3 are uniformly distributed on the fixed assembly 2. It can be understood that if three groups of arc support feeding units 3 are provided, the included angle between every two groups of arc support feeding units 3 is 120 degrees; if the arc support feeding units 3 are four groups, the included angle between the arc support feeding units 3 in no two groups is 90 degrees.

As shown in fig. 1, in some embodiments, the number of the fixing assemblies 22 is three or four, and the three or four fixing assemblies 22 are uniformly distributed on the cylinder 1 to be welded.

As shown in fig. 1 and 6, the present invention further provides a cylinder welding method, including: an installation step and a positioning step, wherein:

when butt welding is carried out, the fixing component 22 is sleeved on the peripheries of the two cylindrical metal shells 4, and the two circular ring structures are symmetrically placed by taking the welding line 5 as a center; it will be appreciated that the fixing assembly is located at the location of the weld 5 and the annular structure is concentric with the weld 5, maintaining the coaxiality of the cylindrical metal shells 4.

When the coil welding is carried out, the fixed component is sleeved on the periphery of the cylinder 4 to be welded, and the arc support feeding unit 3 and the welding line 5 are dislocated;

positioning:

the arc support 31 is propped against the outer periphery of the cylindrical metal shell 1 or the cylinder 4 to be welded, the handle 38 is rotated to drive the arc support 31 to feed, and the scales on the limiting component 33 are referenced until each group of arc support feeding units 3 reach the preset diameter scales.

It will be appreciated that the arc supporting portions 31 support the welding seam 5, so that the coaxiality of the two cylindrical metal shells 4 is ensured, then the welding seam 5 which is not blocked by the arc supporting portions is welded, when the welding of the welding seam 5 which is not blocked is completed, the handle 38 is turned, the support between the arc supporting portions 31 and the welding seam 5 is loosened, the two cylindrical metal shells 4 are rotated by a certain angle in the same direction, the non-welded portions are not blocked before being ensured, and then the welding seam 5 which is not welded is welded after the steps S1 and S2 are repeated.

The above-mentioned exemplary embodiment has realized the butt welding of drum metal casing, has solved the butt welding in-process and has easily aroused the misalignment, and axiality is difficult to guarantee the problem.

Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.

Claims (10)

1. The utility model provides a drum welding position frock which characterized in that includes:

the fixing components are of a circular ring structure on the whole, and are sleeved on the periphery of the cylinder to be welded during positioning;

a plurality of arc support feed units, each fixed subassembly disposes at least two arc support feed unit, each arc support feed unit further includes:

the arc supporting part is provided with an arc supporting surface matched with the shape radian of the cylinder to be welded;

the feeding assembly penetrates through and is movably connected with the circular ring side wall of the fixing assembly and then is connected with the arc supporting portion, and when a workpiece is machined, the feeding assembly enables the arc supporting surface of the arc supporting portion to be close to and propped against the outer wall of the cylinder to be welded in a feeding mode.

2. The cylinder weld fixture of claim 1, wherein each of the fixing assemblies comprises:

the two ring-shaped structures are sleeved on the periphery of the cylinder to be welded during processing;

the plurality of support plates are fixedly connected with the two annular structures, and the number of the support plates of each fixing assembly corresponds to the number of the arc support feeding units configured by each fixing assembly.

3. The cylinder weld fixture of claim 2, wherein each arc holder feed unit further comprises:

and the limiting assembly is a rod body with scales on two surfaces, and the two rod bodies are symmetrically arranged and fixed on the opposite surfaces of the arc supporting surface and penetrate through the supporting plate.

4. A cylinder weld fixture according to claim 2 or 3, wherein the feed assembly comprises: adjust pole and handle, adjust the pole further includes:

the handle is arranged on the rod head, and the handle can be rotated to drive the adjusting rod to push the arc supporting part;

one end of the threaded rod body is connected with the rod head, and the other end of the threaded rod body penetrates through the supporting plate and is connected with the arc supporting part after being in threaded connection with the supporting plate.

5. The cylinder weld fixture of claim 4, wherein the threaded shank is connected to the arced bracket bearing.

6. The cylinder welding positioning tool according to claim 5, further comprising a bearing cover, wherein the bearing cover is arranged at the lower end of the threaded rod body, the joint of the threaded rod body and the arc supporting portion is sealed, and a sealing gasket is further arranged between the bearing cover and the arc supporting portion.

7. The cylinder weld fixture according to claim 6, wherein the bearing cap is fastened to the arc support portion by a screw.

8. The cylinder welding positioning tool according to claim 1, wherein the number of the arc support feeding units is three or four, and the arc support feeding units of three or four groups are uniformly distributed on the fixing assembly.

9. The cylinder welding positioning tool according to claim 1, wherein the number of the fixing assemblies is three or four, and the three or four fixing assemblies are uniformly distributed on the cylinder to be welded.

10. A cylinder welding method, characterized in that the cylinder welding positioning fixture according to any one of the preceding claims 1-9 is applied, the welding method comprising:

the installation step comprises the following steps:

when butt welding is carried out, a single fixing assembly is sleeved on the peripheries of the two cylinder metal shells, and the two circular ring structures are symmetrically placed by taking the welding seam as a center;

when the coil welding is carried out, a plurality of fixing components are sleeved on the periphery of the cylinder to be welded, and the arc support feeding unit and the welding line are dislocated;

positioning:

the arc support part is propped against the periphery of the cylindrical metal shell or the cylinder to be welded, the handle is rotated to drive the arc support part to feed, and scales on the limiting assembly are referenced until each group of arc support feeding units reach the preset diameter scales.

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