Special-shaped workpiece welding tool and using method

Abstract

The special-shaped workpiece welding tool comprises a bottom plate, a positioning hole seat device and a centering device are arranged on the bottom plate at intervals, and the positioning hole seat device is provided with a first sleeve supporting area, a second sleeve supporting area and a third sleeve supporting area in the axial direction; the centering device is provided with a first lantern ring supporting area, a second lantern ring supporting area and a third lantern ring supporting area in the axial direction. The positioning hole seat device and the centering device are arranged on the bottom plate at intervals, so that the first sleeve, the second sleeve and the third sleeve of the special-shaped workpiece are supported in different areas, distributed in the axial direction, of the positioning hole seat device, and the pipe coaxiality of the special-shaped workpiece is improved; the first lantern ring, the second lantern ring and the third lantern ring of the special-shaped workpiece are supported in different areas, distributed in the axial direction, of the centering device, the ring coaxiality of the special-shaped workpiece is improved, and the problems that in the related technology, the key size of the special-shaped workpiece welded through a welding tool is poor, the pipe coaxiality and the ring coaxiality are both larger than 1 mm, and the machining precision is poor are solved. And subsequent processing requirements cannot be met.

Description

Technical Field

[0001] The present application relates to the field of welding technology, and in particular to a welding tool for special-shaped workpieces and a method of using the tool. Background Art

[0002] Currently, welding is an important means of workpiece manufacturing. During the welding process, fixtures are usually used to fix the workpiece. Since special-shaped workpieces are welded together from multiple parts, there are many welds and they are all full welds, which can easily cause irregular welding deformation. In addition, manual marking and welding have low production efficiency.

[0003] In the related art, the welding tool can only clamp one part of the special-shaped workpiece, but cannot clamp different parts of the special-shaped workpiece. In addition, the key dimensions of the special-shaped workpiece after welding are poor, and the coaxiality of the tube and the coaxiality of the ring are both greater than 1 mm, which cannot meet the subsequent machining requirements.

[0004] Therefore, it is necessary to design a new welding tool for special-shaped workpieces to overcome the above problems. Summary of the invention

[0005] The present application provides a welding tool for special-shaped workpieces and a method for using the tool, which can solve the technical problem in the related art that the key dimensions of the special-shaped workpiece after welding are poor, the coaxiality of the tube and the coaxiality of the ring are both greater than 1 mm, and the subsequent mechanical processing requirements cannot be met.

[0006] In a first aspect, an embodiment of the present application provides a welding tool for a special-shaped workpiece, which includes: a base plate, on which a positioning hole seat device and a centering device are arranged at intervals, the positioning hole seat device is provided with a first sleeve support area, a second sleeve support area and a third sleeve support area along the axial direction, the first sleeve support area is used to support the first sleeve of the special-shaped workpiece, the second sleeve support area is used to support the second sleeve of the special-shaped workpiece, and the third sleeve support area is used to support the third sleeve of the special-shaped workpiece, the centering device is provided with a first ring support area, a second ring support area and a third ring support area along the axial direction, the first ring support area is used to support the first ring of the special-shaped workpiece, the second ring support area is used to support the second ring of the special-shaped workpiece, and the third ring support area is used to support the third ring of the special-shaped workpiece.

[0007] In combination with the first aspect, in one embodiment, the positioning hole seat device includes a positioning ring, the positioning ring is bolted to the base plate, the positioning ring is plugged with a positioning shaft, the positioning shaft is sleeved with a movable centering shaft, the surface of the positioning ring is provided with the first sleeve support area, the surface of the positioning shaft is provided with the second sleeve support area, and the surface of the movable centering shaft is provided with the third sleeve support area.

[0008] In combination with the first aspect, in one implementation, the outer diameter of the positioning shaft is smaller than the outer diameter of the positioning ring, and the outer diameter of the positioning shaft is smaller than the outer diameter of the movable centering shaft.

[0009] In combination with the first aspect, in one embodiment, the centering device includes a lower disc, the lower disc is bolted to the base plate, the lower disc is connected to a column, the column is connected to an upper disc, the upper disc is plugged with a centering shaft, the centering shaft is sleeved with a movable positioning shaft, the surface of the centering shaft is provided with the first ring support area, and the surface of the movable positioning shaft is provided with the second ring support area and the third ring support area.

[0010] In combination with the first aspect, in one embodiment, the movable positioning shaft is configured as a stepped shaft, and an outer diameter of an end of the movable positioning shaft close to the centering shaft is smaller than an outer diameter of an end of the movable positioning shaft away from the centering shaft.

[0011] In combination with the first aspect, in one embodiment, a plurality of quick clamping devices are installed between the positioning hole seat device and the centering device, and the quick clamping device includes a first positioning seat, and two first quick clamps facing each other are installed on the top of the first positioning seat, and the two first quick clamps are used to clamp the relative arc-shaped connecting plates of the special-shaped workpiece.

[0012] In combination with the first aspect, in one embodiment, a side positioning device is provided on one side of the centering device, and the side positioning device includes a second positioning seat, a second quick clamp is installed on the top of the second positioning seat, a first positioning block is provided on one side of the second quick clamp, and a second positioning block is provided on the other side of the second quick clamp, and the second quick clamp cooperates with the first positioning block and the second positioning block to position the ring of the special-shaped workpiece.

[0013] In combination with the first aspect, in one embodiment, a plurality of supporting devices are further provided between the positioning hole seat device and the centering device, and the plurality of supporting devices are used to support between the upper connecting plate and the lower connecting plate of the special-shaped workpiece.

[0014] In a second aspect, an embodiment of the present application provides a method for using a special-shaped workpiece welding tool, which comprises the following steps:

[0015] The first step: sequentially install the first sleeve, the second sleeve and the third sleeve into the first sleeve support area, the second sleeve support area and the third sleeve support area of ​​the positioning hole seat device and tighten them, and then sequentially install the first ring, the second ring and the third ring into the first ring support area, the second ring support area and the third ring support area of ​​the centering device and tighten them.

[0016] Step 2: Weld the first sleeve, the second sleeve and the third sleeve, and weld the first ring, the second ring and the third ring.

[0017] In combination with the second aspect, in one embodiment, before the first sleeve, the second sleeve and the third sleeve are welded, and before the first ring, the second ring and the third ring are welded, it also includes: placing a lower connecting plate on a plurality of quick clamping devices of the base plate, placing a plurality of supporting devices and an upper connecting plate in sequence on the lower connecting plate, wherein the lower connecting plate is connected to the second sleeve and the first ring, and the upper connecting plate is connected to the third sleeve and the second ring; clamping the relative connecting plates between the plurality of quick clamping devices, and positioning the arc-shaped connecting plates with a side positioning device, wherein the relative connecting plates are arranged on opposite sides of the lower connecting plate and the upper connecting plate.

[0018] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0019] By arranging positioning hole seat devices and centering devices at intervals on the bottom plate, the first sleeve, the second sleeve and the third sleeve of the special-shaped workpiece are supported in different areas of the positioning hole seat device along the axial distribution, thereby improving the tube coaxiality of the special-shaped workpiece, and the first ring, the second ring and the third ring of the special-shaped workpiece are supported in different areas of the centering device along the axial distribution, thereby improving the ring coaxiality of the special-shaped workpiece, thereby solving the technical problem in the related technology that the key dimensions of the special-shaped workpiece after welding are poor, the tube coaxiality and the ring coaxiality are both greater than 1 mm, and cannot meet the subsequent mechanical processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of a special-shaped workpiece provided in an embodiment of the present application;

[0022] Figure 2 A top view of a special-shaped workpiece provided in an embodiment of the present application;

[0023] Figure 3 A cross-sectional view of a special-shaped workpiece provided in an embodiment of the present application;

[0024] Figure 4 A structural schematic diagram of a special-shaped workpiece welding tool for installing a special-shaped workpiece provided in an embodiment of the present application;

[0025] Figure 5A top view of a special-shaped workpiece welding tool provided in an embodiment of the present application installing a special-shaped workpiece;

[0026] Figure 6 A cross-sectional view of a special-shaped workpiece welding tool provided in an embodiment of the present application installing a special-shaped workpiece;

[0027] Figure 7 A schematic diagram of the structure of the positioning hole seat device provided in an embodiment of the present application;

[0028] Figure 8 A top view of a positioning hole seat device provided in an embodiment of the present application;

[0029] Fig. 9 A cross-sectional view of a positioning hole seat device provided in an embodiment of the present application;

[0030] Fig.10 A schematic diagram of the structure of a centering device provided in an embodiment of the present application;

[0031] Fig.11 A top view of a centering device provided in an embodiment of the present application;

[0032] Fig.12 A cross-sectional view of a centering device provided in an embodiment of the present application;

[0033] Fig.13 A side view of a quick clamping device provided in an embodiment of the present application;

[0034] Fig.14 A top view of a quick clamping device provided in an embodiment of the present application;

[0035] Fig.15 A side view of a side positioning device provided in an embodiment of the present application;

[0036] Fig.16 A top view of a side positioning device provided in an embodiment of the present application;

[0037] Fig.17 A schematic diagram of the structure of the support device provided in an embodiment of the present application.

[0038] In the figure: 1, bottom plate; 2, positioning hole seat device; 21, positioning ring; 22, positioning shaft; 23, movable centering shaft; 24, nut; 25, first handle; 3, centering device; 31, lower disc; 32, column; 33, upper disc; 34, centering shaft; 35, movable positioning shaft; 36, bolt; 37, second handle; 4, quick clamping device; 41, first positioning seat; 42, first quick clamp; 5, side positioning device; 51, second positioning seat; 52, second quick clamp Quick clamp; 53, first positioning block; 54, second positioning block; 6, supporting device; 61, supporting column; 62, third handle; 7, special-shaped workpiece; 701, bottom sleeve; 702, bottom sleeve; 703, connecting ring; 704, threaded sleeve; 705, top sleeve; 706, circular ring; 707, connecting plate; 708, bearing seat; 709, fork seat; 710, upper plate; 711, lower plate; 712, first positioning rotary vane; 713, second positioning rotary vane; 8, lifting ring. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] like Figure 1-3 As shown, the special-shaped workpiece 7 includes a bottom ring 701 and a circular ring 706, the bottom ring 701 and the circular ring 706 are spaced apart, the bottom ring 701 is sequentially plugged with a bottom sleeve 702, a connecting ring 703, a threaded sleeve 704 and a top sleeve 705, the connecting ring 703 is sleeved with the bottom sleeve 702 and the threaded sleeve 704, the circular ring 706 is sequentially plugged with a connecting plate 707, a bearing seat 708 and a fork seat 709, the connecting plate 707 is sleeved with the circular ring 706 and the bearing seat 708, the threaded sleeve 704 is connected to the bottom sleeve 702 and the threaded sleeve 704, and the fork seat 709 is sequentially connected to the bottom sleeve 702 and the threaded sleeve 704. The connecting plate 707 is connected through an upper plate 710 and a lower plate 711, one end of the lower plate 711 abuts against the threaded sleeve 704, and the other end of the lower plate 711 is plugged into the ring 706, one end of the upper plate 710 abuts against the top sleeve 705, and the other end of the upper plate 710 is plugged into the bearing seat 708. A first positioning rotary piece 712 and a second positioning rotary piece 713 are also provided on one side of the connecting plate 707. The different components of the special-shaped workpiece 7 are loose parts before welding, and welding is required to connect the different components into a whole.

[0041] The embodiment of the present application provides a special-shaped workpiece welding tool and a method of use, which can solve the technical problems that the welding tool cannot clamp different components of the special-shaped workpiece 7, and the key dimensions of the special-shaped workpiece 7 after welding are poor, the tube coaxiality and ring coaxiality are both greater than 1 mm, and cannot meet the subsequent mechanical processing requirements.

[0042] See also Figure 4-6 As shown, an embodiment of the present application provides a welding tool for a special-shaped workpiece, which includes: a base plate 1, the base plate 1 is provided with a positioning hole seat device 2 and a centering device 3 at intervals, the positioning hole seat device 2 is axially provided with a first sleeve support area, a second sleeve support area and a third sleeve support area, the first sleeve support area is used to support the first sleeve of the special-shaped workpiece 7, the second sleeve support area is used to support the second sleeve of the special-shaped workpiece 7, the third sleeve support area is used to support the third sleeve of the special-shaped workpiece 7, the centering device 3 is axially provided with a first ring support area, a second ring support area and a third ring support area, the first ring support area is used to support the first ring of the special-shaped workpiece 7, the second ring support area is used to support the second ring of the special-shaped workpiece 7, and the third ring support area is used to support the third ring of the special-shaped workpiece 7.

[0043] In this embodiment, the first sleeve is the bottom sleeve 702, the second sleeve is the threaded sleeve 704, and the third sleeve is the top sleeve 705. The bottom sleeve 702, the threaded sleeve 704, and the top sleeve 705 are respectively plugged and gap-matched with the positioning hole seat device 2, so that the bottom sleeve 702, the threaded sleeve 704, and the top sleeve 705 are coaxially supported on the positioning hole seat device 2 to improve the coaxiality of the pipe. The ring is the circular ring 706, the second ring is the bearing seat 708, and the third ring is the fork seat 709. The circular ring 706, the bearing seat 708 and the fork seat 709 are respectively clearance-matched with the centering device 3, so that the circular ring 706, the bearing seat 708 and the fork seat 709 are coaxially supported on the centering device 3 to improve the coaxiality of the rings. The four corners of the base plate 1 are provided with lifting rings 8 to facilitate the lifting of the welding tooling for the special-shaped workpiece.

[0044] In this embodiment, the positioning hole seat device 2 and the centering device 3 are spaced apart on the base plate 1, so that the first sleeve, the second sleeve and the third sleeve of the special-shaped workpiece 7 are supported in different areas of the positioning hole seat device 2 along the axial distribution, thereby improving the tube coaxiality of the special-shaped workpiece 7, and the first ring, the second ring and the third ring of the special-shaped workpiece 7 are supported in different areas of the centering device 3 along the axial distribution, thereby improving the ring coaxiality of the special-shaped workpiece 7, thereby solving the technical problem in the related art that the key dimensions of the special-shaped workpiece 7 after welding are poor, the tube coaxiality and the ring coaxiality are both greater than 1 mm, and cannot meet the subsequent mechanical processing requirements.

[0045] Further, see Figure 7-9 As shown, in some embodiments, the positioning hole seat device 2 includes a positioning ring 21, the positioning ring 21 is bolted to the base plate 1, the positioning ring 21 is plugged with a positioning shaft 22, the positioning shaft 22 is sleeved with a movable centering shaft 23, the surface of the positioning ring 21 is provided with the first sleeve support area, the surface of the positioning shaft 22 is provided with the second sleeve support area, and the surface of the movable centering shaft 23 is provided with the third sleeve support area.

[0046] In this embodiment, the positioning ring 21 is plugged into the bottom sleeve 702 and has a clearance fit. The clearance range between the positioning ring 21 and the bottom sleeve 702 can be set to ±0.1㎜. The positioning shaft 22 is plugged into the threaded sleeve 704 and has a clearance fit. The clearance range between the positioning shaft 22 and the threaded sleeve 704 can be set to ±0.1㎜. The movable positioning shaft 35 includes an axis core, which is set to be annular. The side of the axis core close to the positioning shaft 22 is recessed inward to form a step. A plurality of blocks are connected to the outer side of the axis core. The plurality of blocks can be set to three blocks. The three blocks are symmetrically arranged along the axis of the axis core. The block is close to the positioning shaft 2 One side of 2 is set as a step, the block abuts against the top sleeve 705 and fits with a gap, the gap range between the block and the top sleeve 705 can be set to ±0.1㎜, the outer diameter of the positioning shaft 22 gradually decreases along its axial direction, which is convenient for assembly and disassembly, and the end of the positioning shaft 22 close to the movable centering shaft 23 is bolted with a nut 24, and a first handle 25 is provided on one side of the nut 24. A cushion block is installed between the nut 24 and the movable centering shaft 23. By rotating the first handle 25, the nut 24 can be pressed against the movable centering shaft 23, and the positioning hole seat device 2 is locked with the bottom sleeve 702, the threaded sleeve 704 and the top sleeve 705.

[0047] Further, see Figure 7-9 As shown, in some embodiments, the outer diameter of the positioning shaft 22 is smaller than the outer diameter of the positioning ring 21 , and the outer diameter of the positioning shaft 22 is smaller than the outer diameter of the movable centering shaft 23 .

[0048] In this embodiment, exemplarily, the inner diameter of the bottom sleeve 702 can be set to 90.1 mm, the inner diameter of the threaded sleeve 704 can be set to 74.1 mm, the inner diameter of the top sleeve 705 can be set to 93.1 mm, the outer diameter of the positioning ring 21 can be set to 89.9 mm, the outer diameter of the positioning shaft 22 can be set to 73.9 mm, the outer diameter of the block of the movable centering shaft 23 can be set to 92.9 mm, and the coaxiality of the positioning ring 21, the positioning shaft 22 and the movable centering shaft 23 is less than 0.1 mm, so that the positioning hole seat device 2 can be assembled with sleeves of different sizes and ensure coaxiality.

[0049] Further, see Figure 10-12 As shown, in some embodiments, the centering device 3 includes a lower disc 31, the lower disc 31 is bolted to the base plate 1, the lower disc 31 is connected to a column 32, the column 32 is connected to an upper disc 33, the upper disc 33 is plugged with a centering shaft 34, the centering shaft 34 is sleeved with a movable positioning shaft 35, the surface of the centering shaft 34 is provided with the first sleeve ring support area, the surface of the movable positioning shaft 35 is provided with the second sleeve ring support area and the third sleeve ring support area.

[0050] In this embodiment, the lower disc 31, the column 32 and the upper disc 33 can be integrally formed or separately formed, the upper disc 33 is bolted to the centering shaft 34 by an internal hexagonal bolt, the centering shaft 34 is plugged into the ring 706 and has a clearance fit, the clearance range between the centering shaft 34 and the ring 706 can be set to ±0.1㎜, the movable positioning shaft 35 can be set to a stepped shaft, the end of the movable positioning shaft 35 close to the centering shaft 34 abuts against the bearing seat 708 and has a clearance fit, the end of the movable positioning shaft 35 away from the centering shaft 34 abuts against the fork seat 709 and has a clearance fit, the movable positioning shaft 35 The gap range with the bearing seat 708 can be set to ±0.1㎜, the gap range between the movable positioning shaft 35 and the fork seat 709 can be set to ±0.1㎜, and the outer diameter of the centering shaft 34 gradually decreases along its axial direction, which is convenient for assembly and disassembly. The end of the centering shaft 34 close to the movable positioning shaft 35 is bolted with a bolt 36, and the bolt 36 is provided with a second handle 37. A gasket is installed between the bolt 36 and the movable positioning shaft 35. By rotating the second handle 37, the bolt 36 can be pressed against the movable positioning shaft 35 to lock the centering device 3 with the ring 706, the bearing seat 708 and the fork seat 709.

[0051] Further, see Figure 10-12As shown, in some embodiments, the movable positioning shaft 35 is configured as a stepped shaft, and the outer diameter of one end of the movable positioning shaft 35 close to the centering shaft 34 is smaller than the outer diameter of one end of the movable positioning shaft 35 away from the centering shaft 34 .

[0052] In this embodiment, exemplarily, the inner diameter of the ring 706 can be set to 80.1 mm, the inner diameter of the bearing seat 708 can be set to 48.1 mm, the inner diameter of the fork seat 709 can be set to 80.1 mm, the outer diameter of the centering shaft 34 can be set to 79.9 mm, the outer diameter of the end of the movable positioning shaft 35 close to the centering shaft 34 can be set to 47.9 mm, and the outer diameter of the end of the movable positioning shaft 35 away from the centering shaft 34 can be set to 79.9 mm. The coaxiality of the centering shaft 34 and the movable positioning shaft 35 is less than 0.1 mm, so that the centering device 3 can be assembled with rings of different sizes and ensure coaxiality.

[0053] Further, see Figure 4 , Fig.13 and Fig.14 As shown, in some embodiments, a plurality of quick clamping devices 4 are installed between the positioning hole seat device 2 and the centering device 3, and the quick clamping device 4 includes a first positioning seat 41, and two first quick clamps 42 facing each other are installed on the top of the first positioning seat 41, and the two first quick clamps 42 are used to clamp the relative arc-shaped connecting plates of the special-shaped workpiece 7.

[0054] In this embodiment, the number of the multiple quick clamping devices 4 can be set to two or three or more, the arc-shaped connecting plate is the connecting plate 707, and the relative connecting plates 707 are arranged on the opposite sides of the upper plate 710 and the lower plate 711. The two first quick clamps 42 facing each other are installed at the two ends of the first positioning seat 41, and the two first quick clamps 42 can quickly clamp the relative connecting plates 707 of the special-shaped workpiece 7 and position them.

[0055] Further, see Figure 4 , Fig.15 and Fig.16 As shown, in some embodiments, a side positioning device 5 is provided on one side of the centering device 3, and the side positioning device 5 includes a second positioning seat 51, a second quick clamp 52 is installed on the top of the second positioning seat 51, a first positioning block 53 is provided on one side of the second quick clamp 52, and a second positioning block 54 is provided on the other side of the second quick clamp 52, and the second quick clamp 52 cooperates with the first positioning block 53 and the second positioning block 54 to position the ring of the special-shaped workpiece 7.

[0056] In this embodiment, the second quick clamp 52 can quickly position the connecting plate 707 from one side, place the first positioning rotary piece 712 and the second positioning rotary piece 713 on the second positioning seat 51, abut the first positioning rotary piece 712 against the first positioning block 53, and abut the second positioning rotary piece 713 against the second positioning block 54, and then the first positioning rotary piece 712 and the second positioning rotary piece 713 can be welded on one side of the connecting plate 707.

[0057] Further, see Figure 4 , Figure 6 and Fig.17 As shown, in some embodiments, a plurality of supporting devices 6 are further provided between the positioning hole seat device 2 and the centering device 3 , and the plurality of supporting devices 6 are used to support between the upper connecting plate and the lower connecting plate of the special-shaped workpiece 7 .

[0058] In this embodiment, the upper connecting plate is the upper plate 710, and the lower connecting plate is the lower plate 711. The supporting device 6 includes a supporting column 61, and the supporting column 61 can be set to a cylindrical shape. A third handle 62 is provided on one side of the supporting column 61. The supporting column 61 is used to support between the upper plate 710 and the lower plate 711 of the special-shaped workpiece 7 to prevent the upper plate 710 and the lower plate 711 from shrinking and deforming during welding.

[0059] See also Figure 4-6 As shown, the embodiment of the present application provides a method for using a special-shaped workpiece welding tool, which includes the following steps:

[0060] The first step: install the first sleeve, the second sleeve and the third sleeve in turn into the first sleeve support area, the second sleeve support area and the third sleeve support area of ​​the positioning hole seat device 2 and tighten them, and then install the first ring, the second ring and the third ring in turn into the first ring support area, the second ring support area and the third ring support area of ​​the centering device 3 and tighten them.

[0061] Step 2: Weld the first sleeve, the second sleeve and the third sleeve, and weld the first ring, the second ring and the third ring.

[0062] In this embodiment, the bottom sleeve 702, the threaded sleeve 704 and the top sleeve 705 are inserted into the positioning shaft 22 in sequence, the first handle 25 is rotated so that the nut 24 presses the movable centering shaft 23, the positioning hole seat device 2 is locked with the bottom sleeve 702, the threaded sleeve 704 and the top sleeve 705, and at the same time, the ring 706, the bearing seat 708 and the fork seat 709 are inserted into the centering shaft 34 in sequence, the second handle 37 is rotated so that the bolt 36 presses the movable positioning shaft 35, the centering device 3 is locked with the ring 706, the bearing seat 708 and the fork seat 709, and then the bottom sleeve 702, the threaded sleeve 704 and the top sleeve 705 are welded, and at the same time, the ring 706, the bearing seat 708 and the fork seat 709 are welded.

[0063] Further, see Figure 4-6 As shown, in some embodiments, before the first sleeve, the second sleeve and the third sleeve are welded, and before the first ring, the second ring and the third ring are welded, it also includes: placing a lower connecting plate on the multiple quick clamping devices 4 of the base plate 1, and placing multiple supporting devices 6 and an upper connecting plate on the lower connecting plate in sequence, wherein the lower connecting plate is connected to the second sleeve and the first ring, and the upper connecting plate is connected to the third sleeve and the second ring; clamping the relative arc connecting plates between the multiple quick clamping devices 4, and positioning the arc connecting plates with the side positioning devices 5, wherein the relative arc connecting plates are surrounded on opposite sides of the lower connecting plate and the upper connecting plate.

[0064] In this embodiment, the positioning hole seat device 2 is used to clamp the bottom sleeve 702, the threaded sleeve 704 and the top sleeve 705, and the centering device 3 is used to clamp the ring 706, the bearing seat 708 and the fork seat 709. At the same time, a plurality of quick clamping devices 4 are used to clamp the relative connecting plates 707, and the side positioning device 5 is used to position the connecting plates 707, so that different components of the special-shaped workpiece 7 can be clamped, and the different components of the special-shaped workpiece 7 can be welded to obtain a complete special-shaped workpiece 7.

[0065] Install the bottom sleeve 701 on the positioning ring 21, insert the bottom sleeve 702 into the bottom sleeve 701, cover the connecting ring 703 with the bottom sleeve 702, insert the threaded sleeve 704 into the connecting ring 703, and insert the circular ring 706 and the lower plate 711 into the centering shaft 34 in sequence, then insert the connecting plate 707 into the centering shaft 34, then insert the top sleeve 705 into the positioning shaft 22, and insert the bearing seat 708, the upper plate 710 and the fork seat 709 into the centering shaft 34 in sequence, rotate the first handle 25 to make the nut 24 press the movable centering shaft 23, and align the positioning hole seat device 2 with the positioning hole seat device 2. The bottom sleeve 702, the threaded sleeve 704 and the top sleeve 705 are locked, the second handle 37 is rotated to make the bolt 36 press the movable positioning shaft 35, the centering device 3 is locked with the ring 706, the bearing seat 708 and the fork seat 709, the multiple quick clamping devices 4 are used to clamp the relative connecting plate 707, and the connecting plate 707 is positioned by the side positioning device 5, and the multiple supporting devices 6 are arranged between the upper plate 710 and the lower plate 711, and finally the bottom sleeve 702, the threaded sleeve 704 and the top sleeve 705 are welded, and the ring 706, the bearing seat 708 and the fork seat 70 9 is welded, and the welding process adopts CO2 gas shielded welding, wherein the welding parameters are voltage 21-23 (V), current 150-210 (A), gas flow rate 10-15 (L / min), and wire dry extension length 10-12 (mm). The welding can adopt a symmetrical welding method to reduce welding deformation. The nut 24 can be loosened by rotating the first handle 25 in the opposite direction, the pad is removed and the movable centering shaft 23 is moved, the bolt 36 can be loosened by rotating the second handle 37 in the opposite direction, the gasket is removed and the movable positioning shaft 35 is moved, the first quick clamp 42 and the second quick clamp 52 are loosened, and the support device 6 is taken out to remove the special-shaped workpiece. 7. The special-shaped workpiece 7 can be subsequently repaired or tempered and corrected. The tempering can be carried out in a trolley-type resistance furnace. The tempering temperature is set to 500-550°C, the holding time is set to 120-150min, and the workpiece is cooled to 200°C in the furnace, and then air-cooled out of the furnace. After the special-shaped workpiece 7 is cooled to room temperature, manual cold correction is used to correct the special-shaped workpiece 7 to ensure that the key dimensions and shape and position tolerances meet the requirements. The coaxiality of the bottom sleeve 702, the threaded sleeve 704 and the top sleeve 705 is less than or equal to 1mm, and the coaxiality of the ring 706, the bearing seat 708 and the fork seat 709 is less than or equal to 1mm, which meets the subsequent mechanical processing requirements, ensures the quality of the special-shaped workpiece 7 and improves production efficiency.

[0066] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0067] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0068] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A welding tool for special-shaped workpieces, characterized in that: It includes: A bottom plate (1), wherein the bottom plate (1) is provided with positioning hole seat devices (2) and centering devices (3) at intervals, The positioning hole seat device (2) is provided with a first sleeve support area, a second sleeve support area and a third sleeve support area along the axial direction, the first sleeve support area is used to support the first sleeve of the special-shaped workpiece (7), the second sleeve support area is used to support the second sleeve of the special-shaped workpiece (7), and the third sleeve support area is used to support the third sleeve of the special-shaped workpiece (7). The centering device (3) is provided with a first ring support area, a second ring support area and a third ring support area along the axial direction, the first ring support area is used to support the first ring of the special-shaped workpiece (7), the second ring support area is used to support the second ring of the special-shaped workpiece (7), and the third ring support area is used to support the third ring of the special-shaped workpiece (7).

2. The welding tool for special-shaped workpieces according to claim 1, characterized in that: The positioning hole seat device (2) comprises a positioning ring (21), the positioning ring (21) is bolted to the base plate (1), the positioning ring (21) is plugged with a positioning shaft (22), the positioning shaft (22) is sleeved with a movable centering shaft (23), the surface of the positioning ring (21) is provided with the first sleeve supporting area, the surface of the positioning shaft (22) is provided with the second sleeve supporting area, and the surface of the movable centering shaft (23) is provided with the third sleeve supporting area.

3. The welding tool for special-shaped workpieces according to claim 2, characterized in that: The outer diameter of the positioning shaft (22) is smaller than the outer diameter of the positioning ring (21), and the outer diameter of the positioning shaft (22) is smaller than the outer diameter of the movable centering shaft (23).

4. The welding tool for special-shaped workpieces according to claim 1, characterized in that: The centering device (3) comprises a lower disc (31), the lower disc (31) is bolted to the base plate (1), the lower disc (31) is connected to a column (32), the column (32) is connected to an upper disc (33), the upper disc (33) is plugged with a centering shaft (34), the centering shaft (34) is sleeved with a movable positioning shaft (35), the surface of the centering shaft (34) is provided with the first sleeve ring support area, and the surface of the movable positioning shaft (35) is provided with the second sleeve ring support area and the third sleeve ring support area.

5. The welding tool for special-shaped workpieces according to claim 4, characterized in that: The movable positioning shaft (35) is configured as a stepped shaft, and the outer diameter of one end of the movable positioning shaft (35) close to the centering shaft (34) is smaller than the outer diameter of one end of the movable positioning shaft (35) away from the centering shaft (34).

6. The welding tool for special-shaped workpieces according to claim 1, characterized in that: A plurality of quick clamping devices (4) are installed between the positioning hole seat device (2) and the centering device (3), and the quick clamping device (4) comprises a first positioning seat (41), and two first quick clamps (42) facing each other are installed at the top end of the first positioning seat (41), and the two first quick clamps (42) are used to clamp the relative arc-shaped connecting plates of the special-shaped workpiece (7).

7. The welding tool for special-shaped workpieces according to claim 1, characterized in that: A side positioning device (5) is provided on one side of the centering device (3), and the side positioning device (5) comprises a second positioning seat (51), a second quick clamp (52) is installed on the top end of the second positioning seat (51), a first positioning block (53) is provided on one side of the second quick clamp (52), and a second positioning block (54) is provided on the other side of the second quick clamp (52), and the second quick clamp (52) cooperates with the first positioning block (53) and the second positioning block (54) to position the collar of the special-shaped workpiece (7).

8. The welding tool for special-shaped workpieces according to claim 1, characterized in that: A plurality of supporting devices (6) are also provided between the positioning hole seat device (2) and the centering device (3), and the plurality of supporting devices (6) are used to support between the upper connecting plate and the lower connecting plate of the special-shaped workpiece (7).

9. A method for using the special-shaped workpiece welding tool as claimed in claim 1, characterized in that: It includes the following steps: The first sleeve, the second sleeve and the third sleeve are sequentially installed into the first sleeve support area, the second sleeve support area and the third sleeve support area of ​​the positioning hole seat device (2) and tightened, and then the first sleeve ring, the second sleeve ring and the third sleeve ring are sequentially installed into the first sleeve ring support area, the second sleeve ring support area and the third sleeve ring support area of ​​the centering device (3) and tightened; The first sleeve, the second sleeve and the third sleeve are welded, and the first ring, the second ring and the third ring are welded.

10. The method of use according to claim 9, characterized in that: Before welding the first sleeve, the second sleeve and the third sleeve, and welding the first ring, the second ring and the third ring, the method further includes: A lower connecting plate is placed on the multiple quick clamping devices (4) of the bottom plate (1), and multiple supporting devices (6) and an upper connecting plate are placed in sequence on the lower connecting plate, wherein the lower connecting plate is connected to the second sleeve and the first sleeve ring, and the upper connecting plate is connected to the third sleeve and the second sleeve ring; The relative arc-shaped connecting plates are clamped between a plurality of quick clamping devices (4), and the arc-shaped connecting plates are positioned by a side positioning device (5), wherein the relative arc-shaped connecting plates are arranged on opposite sides of the lower connecting plate and the upper connecting plate.

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