Skin skeleton structure press-fitting welding tool and using method thereof

Abstract

The invention discloses a skin skeleton structure press-fitting welding tool and a using method thereof. Wherein the tool comprises side face tools, a molded surface tool and a mounting plate, the mounting plate is located at the bottom, the two side face tools are located at the two ends of the upper surface of the mounting plate respectively, and the molded surface tool is located between the two side face tools and mounted on the upper surface of the mounting plate; when the tool assists in welding, a workpiece is sleeved with the multiple molded surface tools one by one, the skin framework structure is located between the molded surface frame and the seam pressing structure, jackscrews at the tops and the lower ends of the molded surface tools abut against the skin framework structure, and the molded surface tools are evenly arranged and fixed in the long edge direction of the workpiece; the workpiece with the three profile tools is lifted up and installed on the installation base; the two side face tools are installed at the two ends of the installation base correspondingly and arranged below the workpiece in a sleeving mode, and then the workpiece is clamped; and carrying out press-fitting welding. Welding can be facilitated, and the problem that assembling, welding and manufacturing of a skin framework structure with a complex profile are difficult is integrally solved.

Description

Technical Field

[0001] The invention relates to a skin skeleton structure press-fit welding tool and a use method thereof, belonging to the technical field of welding assembly tool. Background Art

[0002] With the rapid development of aerospace and other manufacturing fields, the requirements for structures are getting higher and higher, and the requirements for high-strength materials and lightweight design are getting higher and higher. The lightweight structure is achieved through optimization in design, topology, shape and size. This includes comprehensive optimization of the structure by comprehensively considering factors from multiple disciplines, making the structure more reasonable through topological methods to save space, improving the stiffness and mode of the structure through shape optimization, and adjusting the cross-sectional shape and size of parts through size optimization to achieve the purpose of thinning the wall thickness. Overall, the requirements for structural shape, structural strength and lightweight are getting higher and higher, and the structure of high-end equipment is becoming more and more scientific from design to manufacturing. Faced with the increasing requirements of industrial development on structural forms, lightweight, high strength, durability and reasonable configuration of structures have gradually become new research hotspots.

[0003] The skeleton and skin structure can effectively reduce the mass while ensuring a certain strength. It is one of the effective means of lightweighting. It can not only be lightweight, but also meet the requirements of high strength and durability by using advanced high-strength materials. Therefore, the skeleton skin structure of high-strength materials has become a research hotspot in the field of structure. However, the general structure shape is relatively complex, and the profile may not be a general plane; at the same time, the skeleton and skin need to be assembled together, and there are many assembly points; because of the complex structure, many assemblies are also relatively complex, requiring special assembly tools; many skins and skeletons need to be welded together after assembly, and welding must be pressed and convenient for welding; in addition, the skin skeleton structure can ensure a certain strength during design, and the force and application stroke used for assembly are limited. If the single applied force is too large, it may also cause local deformation and structural damage. While designing the skeleton skin structure to achieve complex profiles and lightweight, the manufacturing aspect faces many of the above-mentioned difficulties. Solving the above problems is imminent. Summary of the invention

[0004] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art and provide a skin skeleton structure press-fit welding tool and a method of using the same, which can solve the assembly difficulties while facilitating welding, and overall solve the assembly and welding manufacturing difficulties of complex surface skin skeleton structures, and has broad application prospects in the lightweight structure of skin skeletons in the fields of aerospace, traveling vehicles and ships.

[0005] The technical solution of the present invention is: in the first aspect, a skin skeleton structure press-fit welding tool is provided, comprising: a side tool, a profile tool, and a mounting plate, wherein the mounting plate is located at the bottom, two side toolings are respectively located at the two ends of the upper surface of the mounting plate, and the profile tooling is located between the two side toolings and mounted on the upper surface of the mounting plate; wherein:

[0006] The side fixtures and profile fixtures are similar in shape to the workpiece and are both used to fix the workpiece to facilitate assembly and welding of the workpiece.

[0007] Preferably, the workpieces suitable for the tooling are:

[0008] The whole is composed of a skin frame, the interior is a supporting strength structure composed of a skeleton structure, the outside is a skin, each end of the skeleton has a mounting block, the skin has a rectangular opening, and the mounting block and the rectangular opening are formed into one piece by welding;

[0009] The cross-section of the workpiece finally assembled as a whole is approximately trapezoidal, with a semicircular top edge, a rectangular front, and equal cross-sections perpendicular to the long side of the rectangle.

[0010] Preferably, the side tooling is specifically:

[0011] The overall side tooling is 30cm±5cm larger than the outer contour of the workpiece, and there are reinforcing ribs at the lower part of the symmetrical center. Threaded holes are evenly arranged on the side tooling and are equipped with top screws for adjusting the top screw position during assembly to tighten the workpiece.

[0012] Preferably, the profile tooling includes: a profile frame, a press-fit structure, a press-seam structure, an installation tail block, a welding waist hole, a tail top screw and an end top screw;

[0013] The overall outline of the profile tooling is 30cm±5cm larger than the workpiece. A press seam structure that follows the shape of the workpiece is installed on the inner side of the upper end, and the fit between the press seam structure and the workpiece is controlled by the top screw. The top and root of the profile tooling are respectively installed with end top screws and tail top screws to adjust the tightness of the press-fit workpiece.

[0014] A plurality of oblong holes are symmetrically arranged on the profile frame for installing the press-fit structure.

[0015] Preferably, the press-fit structure is installed on the oblong hole of the profile frame and can adjust its position along the axial direction of the oblong hole, and comprises a press-fit block, a guide seat and an adjusting top screw;

[0016] Three through holes are arranged on the guide seat, and two press-fitting blocks are respectively installed in the two through holes serving as guide structures at both ends of the guide seat; the adjusting screw is located in the through hole in the middle of the guide seat, which can adjust the distance between the press-fitting block and the guide seat to press-fit the skin and the skeleton structure.

[0017] Preferably, the mounting plate is a rectangular plate, and two oblong holes are arranged parallel to the long sides of the rectangular plate for mounting the profile tooling, and the two ends are connected to the side tooling;

[0018] A plurality of profile tools can be installed on the mounting plate, and the positions of the profile tools can be flexibly adjusted during press-fit welding.

[0019] In a second aspect, a method for using a skin frame structure press welding tool is provided, comprising:

[0020] During tooling-assisted welding, multiple profile toolings are first put outside the workpiece one by one, and multiple profile toolings are evenly arranged along the long side direction of the workpiece. After the skin skeleton structure is located in the profile frame, the top screws at the top and bottom of the profile tooling are tightened, and the press-fit structure on the profile tooling is adjusted in height according to the position of the workpiece mounting block hole and the skeleton welding position. The fit between the press-fit structure and the workpiece is adjusted by controlling the top screw, so as to fix the workpiece and the profile tooling;

[0021] Lift the workpiece with three profile fixtures and install them on the mounting seat; adjust the position of the profile fixture on the mounting seat according to the press-fit welding position;

[0022] Install the two side toolings at both ends of the mounting seat respectively, adjust the top screws distributed on the side tooling, press the skin frame workpiece from both ends of the workpiece, and then adjust the position of the press-fit structure and the degree of compression according to the press-fit welding part to perform press-fit welding.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] (1) The present invention adopts a modular design. The side tooling, profile tooling and mounting seat are relatively independent and can form an organic whole. In addition to completing the press-fitting function of each part, they can also jointly complete the press-fitting of the whole and assist in welding. While solving the assembly difficulties, it is also convenient for welding, and the assembly and welding manufacturing difficulties of the complex profile skin skeleton structure are solved as a whole. It has a wide application prospect in the field of lightweight skin skeleton structures in the fields of aerospace, walking vehicles and ships.

[0025] (2) The press-fit structure of the present invention is installed on the oblong hole groove of the profile frame and can move along the oblong hole groove, which not only realizes position adjustment but also facilitates welding after press-fitting. At the same time, the press-fit block can adjust the distance between it and the guide seat under the action of the top screw, thereby realizing the assembly of the skin and the frame and facilitating subsequent welding;

[0026] (3) The side tooling in the present invention adopts an outer contour shape similar to that of the workpiece, and is slightly smaller than the workpiece by one circle. A top screw is installed at the side tooling, which can tighten the workpiece without affecting the outer edge welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1A schematic diagram of a skeleton skin press welding tool provided by the present invention;

[0028] Figure 2 A schematic diagram of the specific structure of the profile tooling provided by the present invention;

[0029] Figure 3 A schematic diagram of the press-fit structure provided by the present invention;

[0030] Figure 4 Schematic diagram of a workpiece to which the tooling of the present invention is applicable. DETAILED DESCRIPTION

[0031] In view of the above manufacturing difficulties, when manufacturing a skeleton skin structure, after the various components are completed, they must eventually be assembled and welded as a whole. The present invention provides a new tooling that can assist in assembly, effectively apply force and control assembly tightness, and facilitate welding.

[0032] The workpieces applicable to the tooling of the present invention are specifically: the whole is composed of a skin frame, the interior is a main supporting strength structure composed of a skeleton structure, the exterior of the structure is assembled together by a protruding block and an external skin and welded as a whole structure, the outside is a skin, the inside is a skeleton installed together, each end of the skeleton has a mounting block, a small rectangular opening is opened on the skin, the mounting block extends out of the small opening, and is formed as a whole by welding. Appearance shape: The cross-section is approximately trapezoidal, the bottom edge is thicker, the top becomes thinner, and the top edge is changed to a semicircular shape, the front is rectangular, and the cross-section is perpendicular to the long side of the rectangle. The final overall assembly requires the various mounting blocks to be pressed together and welded to complete the overall welding finalization.

[0033] The present invention provides a skin skeleton structure press welding tool, comprising: a side tool 1, a profile tool 2, and a mounting plate 3. The profile tool 2 is composed of a profile frame 2-1, a press structure 2-2, a press seam structure 2-3, an installation tail block 2-4, a welding waist hole 2-5, a tail top screw 2-6, and an end top screw 2-7. The press structure 2-2 is composed of a press block 2-2-1, a guide seat 2-2-2, and an adjustment top screw 2-2-3.

[0034] The shape of the side tooling 1 is similar to that of the workpiece, with a rectangular section at the bottom and a dome-shaped triangle at the middle and upper parts. The overall shape is about 30cm±5cm larger than the outer contour of the workpiece. There are reinforcing ribs at the lower part of the symmetrical center. A circle of threaded holes along the shape of the workpiece is opened on the side tooling 1, and top screws are installed. The top screws are evenly distributed. During assembly, the position of the top screws can be adjusted to tighten the workpiece, which is convenient for assembly and welding.

[0035] The mounting plate 3 is a rectangular plate, with two oblong holes in the middle for mounting the profile tooling 2, and the two ends are connected to the side tooling 1. Multiple profile tooling 2 can be installed, and the position of the profile tooling 2 can be flexibly adjusted during press-fit welding, so that various parts of the workpiece can be connected into an organic whole.

[0036] The profile tooling 2 is similar in shape to the workpiece, roughly a dome-shaped triangle with a semicircular top edge. The overall outline is 30cm±5cm larger than the workpiece. A press-fit structure 2-3 that follows the shape of the workpiece is installed on the inner side of the upper end, and a top screw is used to control the fit between the press-fit structure 2-3 and the workpiece. Top screws are installed at the top and the root to tighten the workpiece and adjust the tightness of the workpiece. Long round holes are symmetrically opened on the profile frame 2-1 to facilitate the installation of the press-fit structure 2-2. The press-fitting structure 2-2 is installed on the oblong hole of the profile frame 2-1 and can adjust its position along the oblong hole. The guide seat 2-2-2 is provided with a guide structure and can be installed with a press-fitting block 2-2-1. The guide seat 2-2-2 is provided with three through holes arranged in an array. Two press-fitting blocks 2-2-1 are respectively installed in two through holes at both ends of the guide seat 2-2-2 that serve as guide structures. The adjusting top screw 2-2-3 is located in the through hole in the middle of the guide seat 2-2-2. The adjusting top screw 2-2-3 can adjust the distance between the press-fitting block 2-2-1 and the guide seat 2-2-2, thereby realizing the press-fitting of the skin and the skeleton structure.

[0037] The preferred shapes of the side fixture 1 and the profile fixture 2 are the same as the shape of the workpiece, with only the size difference.

[0038] The method of using the skin frame structure press welding tooling is as follows:

[0039] During tooling-assisted welding, first put the three profile tools 2 on the workpiece one by one, and the skin skeleton structure is located in the profile frame 2-1. Then tighten the top screws at the top and bottom of the profile tooling 2, and evenly fix the three profile tooling 2 at the left, middle and right positions of the workpiece. Then lift the workpiece with the three profile tools and install it on the mounting seat 3. Then install the two side toolings 1 at both ends of the mounting seat respectively, and adjust the top screws on the side tooling 1 to tighten the workpiece. After that, you can press fit and weld. The press-fit structure 2-2 on the profile tooling 2 can adjust the height according to the position of the workpiece mounting block hole and the skeleton welding position. At the same time, the profile tooling can also adjust its position on the mounting seat according to the press-fit welding position. The top screws evenly distributed on the side tooling 1 can adjust the tightness according to the press-fit welding position. After adjusting the appropriate press-fit force, the welding operation can be carried out.

[0040] The contents not described in detail in the specification of the present invention belong to the prior art known to the professional and technical personnel in this field.

Claims

1. A skin frame structure press welding tool, characterized in that include: A side tooling (1), a profile tooling (2), and a mounting plate (3), wherein the mounting plate (3) is located at the bottom, the two side toolings (1) are respectively located at two ends of the upper surface of the mounting plate (3), and the profile tooling (2) is located between the two side toolings (1) and mounted on the upper surface of the mounting plate (3); wherein: The side tooling (1) and the profile tooling (2) are similar in shape to the workpiece and are both used to fix the workpiece, making it convenient to assemble and weld the workpiece.

2. The skin frame structure press-fit welding tool according to claim 1, characterized in that: The workpieces suitable for tooling are: The whole is composed of a skin frame, the interior is a supporting strength structure composed of a skeleton structure, the outside is a skin, each end of the skeleton has a mounting block, the skin has a rectangular opening, and the mounting block and the rectangular opening are formed into one piece by welding; The cross-section of the workpiece finally assembled as a whole is approximately trapezoidal, with a semicircular top edge, a rectangular front, and equal cross-sections perpendicular to the long side of the rectangle.

3. The skin frame structure press-fit welding tool according to claim 2, characterized in that: The side tooling (1) is specifically: The side tooling (1) is 30 cm ± 5 cm larger than the outer contour of the workpiece as a whole, and has reinforcing ribs at the lower part of the symmetrical center. The side tooling (1) is evenly arranged with threaded holes and equipped with top screws for adjusting the top screw position during assembly to tighten the workpiece.

4. The skin frame structure press-fit welding tool according to claim 2, characterized in that: The profile tooling (2) comprises: a profile frame (2-1), a press-fitting structure (2-2), a press-seam structure (2-3), an installation tail block (2-4), a welding waist hole (2-5), a tail top screw (2-6) and an end top screw (2-7); The overall outline of the profile tooling (2) is 30 cm ± 5 cm larger than the outline of the workpiece, and a press seam structure (2-3) following the shape of the workpiece is installed on the inner side of the upper end portion, and the degree of fit between the press seam structure (2-3) and the workpiece is controlled by a top screw; an end top screw (2-7) and a tail top screw (2-6) are installed at the top and the root of the profile tooling (2) respectively, for adjusting the tightness of the press-fit workpiece; A plurality of oblong holes are symmetrically arranged on the profile frame (2-1) for installing the press-fit structure (2-2).

5. The skin frame structure press-fit welding tool according to claim 1, characterized in that: The press-fit structure (2-2) is installed on the oblong hole of the profile frame (2-1) and can adjust its position along the axial direction of the oblong hole, comprising a press-fit block (2-2-1), a guide seat (2-2-2) and an adjusting top screw (2-2-3); Three through holes are arranged on the guide seat (2-2-2), and two press-fitting blocks (2-2-1) are respectively installed in two through holes at both ends of the guide seat (2-2-2) serving as guide structures; an adjusting screw (2-2-3) is located in the through hole in the middle of the guide seat (2-2-2), and the distance between the press-fitting block (2-2-1) and the guide seat (2-2-2) can be adjusted to press-fit the skin and the skeleton structure.

6. The skin frame structure press-fit welding tool according to claim 1, characterized in that: The mounting plate (3) is a rectangular plate with two oblong holes arranged parallel to the long sides of the rectangular plate for mounting the profile tooling (2), and the two ends are connected to the side tooling (1); A plurality of profile toolings (2) can be installed on the mounting plate (3), and the positions of the profile toolings (2) can be flexibly adjusted during press-fit welding.

7. A method for using a skin frame structure press welding tool, characterized in that include: During tooling-assisted welding, a plurality of profile toolings (2) are first placed one by one outside the workpiece, and the plurality of profile toolings (2) are evenly arranged along the long side direction of the workpiece. After the skin skeleton structure is located in the profile frame (2-1), the top screws at the top and bottom of the profile tooling (2) are tightened, and the press-fitting structure (2-2) on the profile tooling (2) is adjusted in height according to the position of the workpiece mounting block hole and the skeleton welding position. The fit between the press-fitting structure (2-3) and the workpiece is adjusted by controlling the top screw, thereby fixing the workpiece and the profile tooling (2); The workpiece with three profile tools is lifted up and mounted on a mounting seat (3); the profile tool (2) is adjusted on the mounting seat according to the press-fit welding position; The two side fixtures (1) are respectively installed at the two ends of the mounting seat, and the top screws distributed on the side fixtures are adjusted to press the skin frame workpiece from both ends of the workpiece, and then the position and pressing degree of the pressing structure (2-2) are adjusted according to the pressing welding position to perform press welding.

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