CN112935661B - Working method of clamp for automatic welding of evaporation tube type flame tube circumferential weld - Google Patents
Working method of clamp for automatic welding of evaporation tube type flame tube circumferential weld Download PDFInfo
- Publication number
- CN112935661B CN112935661B CN202110016873.1A CN202110016873A CN112935661B CN 112935661 B CN112935661 B CN 112935661B CN 202110016873 A CN202110016873 A CN 202110016873A CN 112935661 B CN112935661 B CN 112935661B
- Authority
- CN
- China
- Prior art keywords
- blocks
- profile
- expansion block
- outer ring
- arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to a working method of a clamp for automatically welding an evaporating tube type flame tube circumferential weld, which comprises a plurality of fan-shaped profile expansion blocks, round tables, an upper pressure plate and expansion block supporting blocks, wherein the profile expansion blocks, the round tables, the upper pressure plate and the expansion block supporting blocks are used for forming a disc, the inner side ends of the profile expansion blocks are provided with expansion block conical surfaces, the expansion block supporting blocks are arranged on the inner side of the inner side wall of an outer ring section when in use, the inner side ends of the profile expansion blocks are arranged on the top surfaces of the expansion block supporting blocks, the outer side ends of the profile expansion blocks are arranged in an annular cavity body and are adjacent to the inner side of the outer side wall of the outer ring section, the upper pressure plate is arranged above the circular table, the circular table descends by pressing the upper pressure plate downwards, the circular table extrudes the profile expansion blocks outwards along the radial direction, and the outer side ends of the profile expansion blocks are abutted to the inner side of the outer side wall of the outer ring section.
Description
Technical Field
The invention relates to the technical field of auxiliary equipment of aero-engines, in particular to a clamp for automatically welding an evaporating pipe type flame tube circumferential weld.
Background
A core component combustion chamber flame tube of a certain type of engine is of an evaporation tube type thin-wall structure (as shown in figure 1), and ten thousand cooling holes and blended combustion holes are distributed on the surfaces of an inner ring and an outer ring; the material of the flame tube of the combustion chamber is GH3536, the basic wall thickness is 0.8mm, the flame tube is formed by combining 42 single pieces, the processing method comprises sheet metal forming, vacuum brazing, resistance seam welding, automatic argon arc welding, manual argon arc welding, laser drilling, laser cutting, thermal spraying, heat treatment, machining, water flow tests and the like, the part is a thin-wall sheet metal part with large deformation and difficult control of processing size, particularly when the flame tube shell 1 and the flame tube outer ring section 2 are welded, the flame tube outer ring section 2 forms an annular cavity 24 by an outer ring section outer side wall 21, an outer ring section inner side wall 22 and an outer ring section bottom wall 23, the flame tube shell 1 needs to be reversely buckled at the top of the flame tube outer ring section 2, the flame tube shell 1 and the outer ring section outer side wall 21 are in contact and welded to form an annular welding seam 26, because the wall thicknesses of the flame tube shell 1 and the flame tube outer ring section 2 are thin (about 0.8 mm), the outer diameter is large (about 300 mm), so that deformation is easy to occur during welding, the quality of the whole part is affected, and the combustion performance of the engine is further affected; in order to ensure the welding quality, increase the rigidity of a weldment, reduce the welding deformation, improve the quality of a welding seam and ensure the welding processing requirement of a product, the special welding fixture is designed, which is a technical problem that needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to solve the technical problem of providing a clamp for automatically welding the circumferential weld of an evaporation tube type flame tube, which has a simple structure and is easy to assemble.
In order to solve the technical problem, the clamp for automatically welding the circumferential weld of the evaporating tube type flame tube comprises a plurality of fan-shaped profile expansion blocks, a circular table, an upper pressure plate and expansion block supporting blocks, wherein the fan-shaped profile expansion blocks, the circular table, the upper pressure plate and the expansion block supporting blocks are used for forming a circular disc, the inner side ends of the profile expansion blocks are provided with expansion block conical surfaces, the expansion block supporting blocks are arranged on the inner side of the inner side wall of an outer ring section when in use, the inner side ends of the profile expansion blocks are arranged on the top surface of the expansion block supporting blocks, the outer side ends of the profile expansion blocks are arranged in an annular cavity and are close to the inner side of the outer side wall of the outer ring section, so that the profile expansion blocks form the circular disc, the expansion block conical surfaces of the profile expansion blocks form a conical hole matched with the shape of the circular table, the circular table is inverted in the conical hole, the upper pressure plate is arranged above the circular table, the upper pressure plate is pressed downwards to enable the circular table to descend, and the profile expansion blocks are extruded outwards along the radial direction by the circular table, the outside end of each profile expansion block is abutted against the inner side of the outer side wall of the outer ring section to form a support, and the butt joint is arranged at the welding seam during welding, so that welding deformation can be effectively avoided.
Further, the anchor clamps for automatic welding of evaporating pipe type flame tube circumferential weld still include a plurality of arc support arc boards with profile expanding block outside end looks adaptation, the support arc board is the copper product, the support arc board is fixed to be set up the outside end of profile expanding block is in order to make the outside of holding in the palm the arc board stretch out the outside end of profile expanding block is contacted with outer loop section lateral wall by holding in the palm the arc board, forms the support to outer loop section lateral wall.
Furthermore, the clamp for automatically welding the circumferential weld of the evaporating tube type flame tube also comprises a bottom plate and a centering pin, wherein a positioning hole is formed in the bottom wall of the outer ring section of the flame tube, one end of the positioning pin is inserted into the positioning hole, and the other end of the positioning pin is inserted into the bottom plate, so that the outer ring section of the flame tube is fixedly arranged on the bottom plate.
Further, the clamp for automatically welding the circumferential weld of the evaporating tube type flame tube further comprises a central shaft and a compression nut, a central hole suitable for the front end of the central shaft to penetrate is formed in the centers of the bottom plate, the expansion block supporting block, the upper pressure plate and the circular truncated cone, a threaded portion in threaded fit with the compression nut is formed in the front end of the central shaft, the front end of the central shaft penetrates through the central holes of the bottom plate, the expansion block supporting block, the circular truncated cone and the upper pressure plate in sequence during assembly, and the compression nut is sleeved on the threaded portion, so that the compression nut can adjust the distance between the upper pressure plate and the expansion block supporting block and drive the circular truncated cone to move.
Further, the lower side of the middle part of the profile expansion block is provided with an arc-shaped groove, so that the arc-shaped grooves are connected to form a ring groove when each profile expansion block forms a disc, and the outer side end of the profile expansion block is arranged in the ring cavity, and the inner side wall of the outer ring section is arranged in the ring groove.
Further, the anchor clamps for evaporating pipe type flame tube circumferential weld automatic weld still include the ring of ventilating, the ring of ventilating includes multistage plastic tubing and the nonrust steel pipe of multistage, links to each other in order forming a ring body through the plastic tubing between each nonrust steel pipe, sets up the outlet duct on each nonrust steel pipe, radially set up on the lateral wall of annular is suitable for the venthole that the outlet duct passes through, in the annular was arranged in to the ring of ventilating during the use, the outlet duct inserted the venthole, and the ring of ventilating is arranged behind the introduction inert gas by the outlet duct and is protected to the welding department.
Further, set up curved inner ring groove on holding in the palm the inside wall of arc board, set up curved outer ring groove on holding in the palm the lateral wall of arc board, the side setting of going up of outer ring groove sets up the arc supporting part with outer loop section lateral wall looks adaptation, set up a plurality of support arc board air vents between inner ring groove and the outer ring groove, the inner ring groove cover is established on the venthole during the use for the intra-annular gas of ventilating can get into inner ring groove, and get into outer ring groove by holding in the palm the arc board air vent, in order to realize the protection to welding department.
The invention has the technical effects that: (1) compared with the prior art, the clamp for automatically welding the circumferential weld of the evaporating tube type flame tube has the advantages that the multiple fan-shaped profile expansion blocks capable of forming a disc are arranged, the conical surfaces of the expansion blocks are arranged at the inner side ends of the profile expansion blocks and are matched with the circular truncated cone, so that the circular truncated cone can be lifted and lowered to drive the profile expansion blocks to move radially, the outer side ends of the profile expansion blocks are abutted against the inner side of the outer side wall of the outer ring section to form a support, and deformation during welding can be effectively avoided; (2) the outer side end of each profile expansion block is provided with a copper arc supporting plate, copper has the advantages of low resistivity and good heat conductivity, and the arc supporting plates at the welding seams are made of copper materials, so that the cost is greatly reduced; (3) the arrangement of the central shaft and the bottom plate enables the clamp to be easily assembled; (4) the arc supporting plate is provided with the inner ring groove, the outer ring groove and the arc supporting plate vent hole, so that inert gas in the vent ring can act on the welding seam, and the protection effect is improved.
Drawings
The invention is described in further detail below with reference to the drawings of the specification:
FIG. 1 is a schematic cross-sectional view of a welded flame tube;
FIG. 2 is a schematic cross-sectional view of the fixture for automatically welding the circumferential weld of the evaporating tube type flame tube of the present invention after being clamped with the flame tube;
FIG. 3 is a schematic cross-sectional view of the base plate;
FIG. 4 is an axial schematic view of the assembled profile expansion blocks;
FIG. 5 is a schematic view of a cross-sectional structure of the assembled profile expansion blocks in a radial direction;
FIG. 6 is an axial structural view of the upper platen;
FIG. 7 is a sectional view taken along line A-A in FIG. 6;
FIG. 8 is a schematic cross-sectional view of the circular truncated cone;
FIG. 9 is a schematic cross-sectional view of the bulk head support block;
FIG. 10 is a schematic view of the vent ring;
FIG. 11 is a schematic view of the structure of the central shaft;
fig. 12 is a schematic cross-sectional view of the arc supporting plate.
In the figure: the flame tube comprises a flame tube shell 1, a flame tube outer ring section 2, an outer ring section outer side wall 21, an outer ring section inner side wall 22, an outer ring section bottom wall 23, an annular cavity 24, a positioning hole 25 and an annular welding seam 26;
the bottom plate 3, the centering pin 31, the expansion block supporting block 32, a supporting block central hole 33, a bottom plate central hole 34, a centering pin jack 35 and a lightening hole 36;
the circular truncated cone 4, the inclined side wall 41, the circular truncated cone center hole 42,
the profile expansion block 5, the expansion block conical surface 51, the arc-shaped groove 52, the outer side wall 53, the convex edge 54, the convex edge connecting hole 55, the screw mounting hole 56, the clamping screw 57, the expansion block splicing seam 58 and the conical hole 59;
the air vent ring 6, the stainless steel pipe 61, the plastic pipe 62, the air inlet 63 and the air outlet pipe 64;
the arc supporting plate 7, the outer ring groove 71, the inner ring groove 72, the arc supporting part 73, the mounting hole 74 and the arc supporting plate vent hole 75;
an upper pressure plate 8, an upper pressure plate step 81, an upper pressure plate center hole 82, an upper pressure plate lightening hole 83, a vent groove 84, a clamping groove 85 and a clamping handle 86;
Detailed Description
Example 1
The automatic welding fixture for the circumferential weld of the evaporation tube type flame tube of the embodiment comprises 6 fan-shaped profile expansion blocks 5 for forming a disc, a circular table 4, an upper pressure plate 8 and an expansion block supporting block 32, as shown in fig. 2.
As shown in fig. 4 and 5, the profile expanding block 5 is obtained by profile processing of a disc with a diameter of 308mm, and specifically includes that a tapered hole 59 with a taper of 30 degrees, a depth of 34mm and a bottom diameter of 61.5mm to 62mm is processed in the center of the disc, a ring groove with a depth of 30mm and a width of 43.5mm is processed at the bottom end of the disc, and a convex edge 54 with a height of 10mm and a width of 10.5mm is processed at the edge of the bottom end of the disc; after finishing the machining of the profile, dividing the disc into 6 profile expansion blocks 5 in a linear cutting mode, wherein the cutting angle of 3 blocks is 40 degrees, the cutting angle of 3 blocks is 80 degrees, the 40-degree profile expansion blocks 5 and the 80-degree profile expansion blocks 5 are alternately arranged, and the cutting is performed for 3mm to reserve the amount of expansion movement; after cutting, using impact printing to make sequential marks in the clockwise direction; each profile expansion block 5 obtained is formed with an arc-shaped slot 52 at its bottom end and a tapered expansion block surface 51 at its inner side end, and each profile expansion block 5 is provided with a screw mounting hole 56 at its upper end surface for mounting a clamping screw 57.
As shown in fig. 6 and 7, the upper press plate 8 is a circular plate, the outer diameter of the circular plate is 320mm, the thickness of the circular plate is 20mm, the center of the circular plate is provided with an upper press plate center hole 82 with the diameter of 12mm, the bottom end edge of the upper press plate 8 is step-shaped and is used for forming an upper press plate step 81 with the height of 13mm, the diameter of the upper press plate step 81 is 299mm, in order to reduce the weight of the upper press plate 8, the upper press plate is provided with 2 upper press plate lightening holes 83, and the upper press plate 8 is an aluminum piece; 4 clamping handles 86 are symmetrically arranged on the edge of the upper pressing plate 8, so that the upper pressing plate 8 can be conveniently clamped; the outer side of the central hole 82 of the upper press plate is provided with 3 clamping grooves 85, and the edge of the upper press plate is provided with a long strip-shaped vent groove 84.
As shown in fig. 8, the diameter of the small end of the circular truncated cone 4 is 65mm, the height of the circular truncated cone 4 is 34mm, the center of the circular truncated cone is provided with a circular truncated cone center hole 42 with the diameter of 20mm, and the vertex angle of the circular truncated cone 4 is 30 degrees and is matched with the inclination angle of the tapered hole 59.
As shown in fig. 9, the center of the expander support block 32 is provided with a support block center hole 33 with a diameter of 20mm, and the height of the expander support block 32 is 79mm for receiving the profile expander 5.
The automatic welding fixture for the evaporating pipe type flame tube circumferential weld further comprises a vent ring 6 used for introducing inert gas to the weld, as shown in fig. 10, the vent ring 6 comprises 5 sections of plastic pipes 62 and 6 sections of stainless steel pipes 61, wherein the stainless steel pipes 61 can be bent into a circular ring with the diameter of 256mm by the stainless steel pipes with the diameter of 6mm when being manufactured, the circular ring is scribed and cut into 10 sections, 6 sections are reserved, the rest 5 sections are replaced by the plastic pipes 62 with the same length, the two sections are strung into the circular ring, the joints of the two ends are tied by iron wires, a hole with the diameter of 5mm is drilled on each section of the stainless steel pipe 61 along the radial direction of the circular ring, an air outlet pipe 64 with the diameter of 4mm is inserted into the drilled position, the air outlet pipe 64 extends outwards along the radial direction of the circular ring, the air outlet pipe 64 is firmly welded along the circumference by argon arc welding after being inserted, and the air inlet 63 formed by the bent section of the first stainless steel pipe 61 is reserved. The arrangement of the plastic pipe 62 enables the ventilation ring 6 to be easily bent, and clamping is convenient.
The clamp for automatically welding the circumferential weld of the evaporating tube type flame tube also comprises a circular bottom plate 3 and 3 centering pins 31, the bottom wall 23 of the outer ring section 2 of the flame tube is provided with a plurality of positioning holes 25, as shown in figure 3, the diameter of the bottom plate 3 is 395mm, the center of the bottom plate 3 is provided with a bottom plate center hole 34 with the diameter of 20mm, and the height of the bottom plate 3 is 20 mm; 3 centering pin insertion holes 35 matched with the centering pins 31 and 6 lightening holes 36 with the diameter of 30mm are arranged on the bottom plate 3; during assembly, the outer ring section 2 of the flame tube is arranged on the bottom plate 3, one end of each positioning pin 31 is inserted into the positioning hole 25 of the bottom wall 23 of the outer ring section, and the other end of each positioning pin is inserted into the centering pin insertion hole 35 of the bottom plate 3, so that the outer ring section 2 of the flame tube is fixedly arranged on the bottom plate 3.
The clamp for automatically welding the circumferential weld of the evaporating tube type flame tube further comprises a central shaft 9 and a compression nut 91, as shown in fig. 11, an end cap is arranged at the tail end of the central shaft 9, the middle section of the central shaft 9 is a straight rod section with the diameter of 20mm, and the straight rod section is matched with the sizes of the central hole 34 of the bottom plate, the central hole 33 of the supporting block, the central hole 42 of the circular truncated cone and the central hole 82 of the upper pressure plate; a screw portion 93 is provided at the front end of the center shaft 9, and the compression nut 92 is screw-engaged with the screw portion 93.
The automatic welding fixture for the circular welding seam of the evaporating tube type flame tube further comprises 6 arc-shaped arc supporting plates 7 matched with the outer side ends of the profile expansion blocks, as shown in figure 12, the arc supporting plates 7 are made of copper, copper rings matched with the diameter of a disc formed by the profile expansion blocks 5 are selected for profile machining during manufacturing, inner ring grooves 72 are formed in the inner side walls of the arc supporting plates, outer ring grooves 71 are formed in the outer side walls of the arc supporting plates, arc-shaped supporting portions 73 matched with the outer ring section outer side walls 21 are arranged on the upper side surfaces of the outer ring grooves 71, the copper rings are cut into 6 pieces according to the size of the profile expansion blocks 5, and the cutting seams are also 3 mm; the convex edge 54 is provided with 12 convex edge connecting holes 55, each arc supporting plate 7 is provided with a mounting hole 74, so that each arc-shaped arc supporting plate 7 is connected with the convex edge connecting hole 55 through a countersunk head screw, 6 air outlet holes suitable for the air outlet pipe to pass through are arranged on the outer side wall of the ring groove along the radial direction, one air outlet hole is reserved on each cut molded surface expansion block 5, a plurality of arc supporting plate vent holes 75 are arranged between the inner ring groove 72 and the outer ring groove 71, the outer side of the arc supporting plate 7 extends out of the outer side end of the molded surface expansion block 5 during assembly and is contacted with the outer side wall 21 of the outer ring section through the arc supporting plate 7, the outer side wall 21 of the outer ring section forms a support, an inner ring groove 72 formed by the arc supporting plate 7 covers the air outlet hole, the vent ring 6 is arranged in the ring groove, the air outlet pipe 64 is inserted into the corresponding air outlet hole, the vent ring 6 introduces inert gas, then the inert gas enters the inner ring groove 72 through the air outlet pipe 64, and enters the outer ring groove 71 through the arc supporting plate vent hole 75, so that the protection of the welding position is realized.
When clamping, the method comprises the following steps:
A. the expansion block supporting block 32 is arranged on the bottom plate 3, so that the supporting block central hole 33 is aligned with the bottom plate central hole 34, the central shaft 9 penetrates through the bottom plate central hole 34 and the supporting block central hole 33, and the end cap of the central shaft 9 is arranged outside the bottom plate 3 and limited by the bottom plate 3.
B. One end of each of the 3 centering pins 31 is inserted into the corresponding 3 positioning holes 25 of the bottom wall 23 of the outer ring section, and the other end of each of the 3 centering pins is inserted into the corresponding centering pin insertion hole 35 of the bottom plate 3, so that the outer ring section 2 of the flame tube is fixedly arranged on the bottom plate 3, the outer ring section 2 of the flame tube is angularly limited by the centering pins, and at the moment, the expansion block supporting block 32 is arranged in the outer ring section 2 of the flame tube.
C. Sequentially fixing 6 arc supporting plates 7 on the convex edges 54 of the corresponding molded surface expansion blocks 5, so that the inner annular grooves 72 of the arc supporting plates 7 are covered on the air outlet holes, and the outer sides of the arc supporting plates 7 extend out of the outer side ends of the molded surface expansion blocks 5; inserting one air outlet pipe 64 of the vent ring 6 into an air outlet hole of the first profile expansion block 5, so that the vent ring 6 is arranged in the arc-shaped groove 52 of the profile expansion block 5, the inner side end of the profile expansion block 5 is arranged on the expansion block supporting block 32, the outer side end of the profile expansion block 5 extends into the annular cavity 24, and the inner side wall 22 of the outer ring section is arranged in the arc-shaped groove 52, so that the inner side wall 22 of the outer ring section supports the profile expansion block 5; the other 5 profile expansion blocks 5 are sequentially placed on the expansion block supporting block 32 according to the same operation, so that the profile expansion blocks 5 form a disc, the adjacent profile expansion blocks 5 are abutted to reduce the width of the expansion block splicing seam 58, the conical surface 51 of the expansion block at the inner side end of the profile expansion block 5 forms a conical hole 59, and the central shaft 9 passes through the conical hole 59.
D. The circular truncated cone 4 is sleeved on the central shaft 9 along the circular truncated cone central hole 42, so that the circular truncated cone 9 is inverted on the tapered hole 59, the small end of the circular truncated cone 4 is inserted into the large end of the tapered hole 59, and the inclined side wall 41 of the circular truncated cone 4 is contacted with the conical surface 51 of the expansion block; buckling the flame tube shell 1 on the outer ring section 2 of the flame tube to ensure that the inner wall of the flame tube shell 1 is tightly attached to the outer side wall 21 of the outer ring section of the flame tube; the upper pressure plate 3 is sleeved on the central shaft 9 along the central hole 34 of the upper pressure plate, a compression washer 92 is further sleeved between the upper pressure plate 3 and the circular truncated cone 4, the threaded part 93 at the front end of the central shaft 9 extends out of the upper pressure plate 8 and then is in threaded fit with a compression nut 91, and the upper pressure plate step 81 of the upper pressure plate 8 is inserted into the flame tube shell 1; when the gland nut 91 is screwed down, the upper pressure plate 8 is driven to descend, the circular truncated cone 4 is driven to descend by the upper pressure plate 8, the inclined side wall 41 extrudes the expansion block conical surface 51 of the profile expansion block 5, each profile expansion block 5 moves outwards along the radial direction, the expansion block splicing seams 58 between the adjacent profile expansion blocks 5 are increased, and the arc supporting plate 7 at the outer side end of the profile expansion block 5 is in contact with the outer ring section outer side wall 21 to support the outer ring section outer side wall 21.
In order to introduce inert gas into the ventilation ring 6 conveniently, inert gas is introduced into the ventilation ring 6 by adopting a gas guide pipe, a through hole suitable for the gas guide pipe to pass through is formed in the profile expanding block 5, and the gas guide pipe is communicated with the gas inlet 63 of the ventilation ring 6 after passing through the ventilation groove 84 of the upper pressure plate 8 and the through hole of the profile expanding block 5.
To facilitate fine adjustment of the position of each profile expansion block 5, a tool can be used to fine-tune the profile expansion block 5 through the clamping slot 85 of the upper platen 8.
During disassembly, after the compression nut 91 is disassembled, the upper pressure plate 8, the compression washer 92 and the circular truncated cone 4 are taken out, and the clamping screw 57 can be clamped by a tool when the profile expansion block 5 is moved, so that the movement is convenient.
It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the invention are intended to be covered by the scope of the present invention.
Claims (1)
1. The working method of the clamp for automatically welding the circumferential weld of the evaporating tube type flame tube is characterized in that the clamp comprises a plurality of fan-shaped profile expansion blocks, a circular table, an upper pressure plate and expansion block supporting blocks, wherein the fan-shaped profile expansion blocks, the circular table, the upper pressure plate and the expansion block supporting blocks are used for forming a circular disc, the inner side ends of the profile expansion blocks are provided with expansion block conical surfaces, the expansion block supporting blocks are arranged on the inner side of the inner side wall of an outer ring section when in use, the inner side ends of the profile expansion blocks are arranged on the top surface of the expansion block supporting blocks, the outer side ends of the profile expansion blocks are arranged in the annular cavity and are close to the inner side of the outer side wall of the outer ring section, so that the profile expansion blocks form the circular disc, the expansion block conical surfaces of the profile expansion blocks form a conical hole matched with the shape of the circular table, the circular table is inverted in the conical hole, the upper pressure plate is arranged above the circular table, the upper pressure plate is pressed downwards to enable the circular table to descend, and the profile expansion blocks are extruded outwards along the radial direction by the circular table, the outer side end of each profile expansion block is abutted against the inner side of the outer side wall of the outer ring section;
the clamp further comprises a plurality of arc-shaped arc supporting plates matched with the outer side ends of the profile expansion blocks, the arc supporting plates are made of copper, the arc supporting plates are fixedly arranged at the outer side ends of the profile expansion blocks so that the outer sides of the arc supporting plates extend out of the outer side ends of the profile expansion blocks, and the arc supporting plates are in contact with the outer side wall of the outer ring section to support the outer side wall of the outer ring section;
the fixture further comprises a bottom plate and a centering pin, a positioning hole is formed in the bottom wall of the outer ring section of the flame tube, one end of the centering pin is inserted into the positioning hole, and the other end of the centering pin is inserted into the bottom plate, so that the outer ring section of the flame tube is fixedly arranged on the bottom plate;
the clamp further comprises a central shaft and a compression nut, a central hole suitable for the front end of the central shaft to penetrate through is formed in the centers of the bottom plate, the expansion block supporting block, the upper pressing plate and the circular truncated cone, a threaded part in threaded fit with the compression nut is arranged at the front end of the central shaft, the front end of the central shaft penetrates through the central holes of the bottom plate, the expansion block supporting block, the circular truncated cone and the upper pressing plate in sequence during assembly, and the compression nut is sleeved on the threaded part, so that the compression nut can adjust the distance between the upper pressing plate and the expansion block supporting block and drive the circular truncated cone to move;
the lower side of the middle part of the profile expansion block is provided with an arc-shaped groove, so that the arc-shaped grooves are connected to form a ring groove when each profile expansion block forms a disc, the outer side end of the profile expansion block is arranged in the ring cavity, and the inner side wall of the outer ring section is arranged in the ring groove;
the clamp also comprises a vent ring, the vent ring comprises a plurality of sections of plastic pipes and a plurality of sections of stainless steel pipes, the stainless steel pipes are connected through the plastic pipes to form a ring body, each stainless steel pipe is provided with an air outlet pipe, the outer side wall of the ring groove is radially provided with air outlet holes suitable for the air outlet pipe to pass through, the vent ring is arranged in the ring groove when in use, and the air outlet pipe is inserted into the air outlet holes;
the inner side wall of the arc supporting plate is provided with an arc-shaped inner annular groove, the outer side wall of the arc supporting plate is provided with an arc-shaped outer annular groove, the upper side surface of the outer annular groove is provided with an arc-shaped supporting part matched with the outer side wall of the outer ring section, a plurality of arc supporting plate vent holes are formed between the inner annular groove and the outer annular groove, and the inner annular groove covers the vent holes when the arc supporting plate is used, so that gas in the vent rings can enter the inner annular groove and enter the outer annular groove through the arc supporting plate vent holes;
the working method comprises the following steps:
A. arranging the expansion block supporting block on the bottom plate, aligning a supporting block central hole with a bottom plate central hole, enabling a central shaft to penetrate through the bottom plate central hole and the supporting block central hole, arranging an end cap of the central shaft outside the bottom plate, and limiting by the bottom plate;
B. inserting one end of each centering pin into a corresponding positioning hole in the bottom wall of the outer ring section respectively, and inserting the other end of each centering pin into a centering pin insertion hole of the bottom plate so as to fix the outer ring section of the flame tube on the bottom plate, carrying out angular limiting on the outer ring section of the flame tube by the centering pins, and then arranging the expansion block supporting block in the outer ring section of the flame tube;
C. sequentially fixing each arc supporting plate on the convex edge of the corresponding profile expansion block, so that the inner annular groove of each arc supporting plate is covered on the air outlet, and the outer side of each arc supporting plate extends out of the outer side end of the profile expansion block; inserting one air outlet pipe of the ventilation ring into an air outlet hole of the first profile expansion block, so that the ventilation ring is arranged in an arc-shaped groove of the profile expansion block, the inner side end of the profile expansion block is arranged on an expansion block supporting block, the outer side end of the profile expansion block extends into the annular cavity, and the inner side wall of the outer ring section is arranged in the arc-shaped groove, so that the inner side wall of the outer ring section supports the profile expansion block; sequentially placing the rest profile expansion blocks on the expansion block supporting blocks according to the same operation, so that the profile expansion blocks form a disc, the adjacent profile expansion blocks are abutted to reduce the width of the splicing seams of the expansion blocks, the conical surfaces of the expansion blocks at the inner side ends of the profile expansion blocks form conical holes, and a central shaft penetrates through the conical holes;
D. sleeving the circular truncated cone on the central shaft along the central hole of the circular truncated cone, so that the circular truncated cone is inverted on the conical hole, the small head end of the circular truncated cone is inserted into the large head end of the conical hole, and the inclined side wall of the circular truncated cone is contacted with the conical surface of the expansion block; buckling the flame tube shell on the outer ring section of the flame tube to ensure that the inner wall of the flame tube shell is tightly attached to the outer side wall of the outer ring section of the flame tube; the upper pressure plate is sleeved on the central shaft along the central hole of the upper pressure plate, a compression washer is sleeved between the upper pressure plate and the circular truncated cone, the threaded part at the front end of the central shaft extends out of the upper pressure plate and then is in threaded fit with a compression nut, and the step of the upper pressure plate is inserted into the flame tube shell; when the compression nut is screwed down, the upper pressure plate is driven to descend, the circular truncated cone is driven to descend by the upper pressure plate, the inclined side wall extrudes the expansion block conical surface of the profile expansion block, each profile expansion block moves outwards along the radial direction, the expansion block splicing seam between adjacent profile expansion blocks is increased, and the outer ring section outer side wall is supported by the contact of the arc supporting plate at the outer side end of the profile expansion block and the outer ring section outer side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110016873.1A CN112935661B (en) | 2019-04-12 | 2019-04-12 | Working method of clamp for automatic welding of evaporation tube type flame tube circumferential weld |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910295037.4A CN109848629B (en) | 2019-04-12 | 2019-04-12 | Fixture for automatic welding of circumferential weld of evaporating pipe type flame tube |
| CN202110016873.1A CN112935661B (en) | 2019-04-12 | 2019-04-12 | Working method of clamp for automatic welding of evaporation tube type flame tube circumferential weld |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910295037.4A Division CN109848629B (en) | 2019-04-12 | 2019-04-12 | Fixture for automatic welding of circumferential weld of evaporating pipe type flame tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112935661A CN112935661A (en) | 2021-06-11 |
| CN112935661B true CN112935661B (en) | 2022-06-28 |
Family
ID=66903897
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110016873.1A Active CN112935661B (en) | 2019-04-12 | 2019-04-12 | Working method of clamp for automatic welding of evaporation tube type flame tube circumferential weld |
| CN202110016748.0A Active CN112846633B (en) | 2019-04-12 | 2019-04-12 | Evaporation tube type flame tube circumferential weld automatic welding fixture capable of avoiding welding deformation |
| CN201910295037.4A Active CN109848629B (en) | 2019-04-12 | 2019-04-12 | Fixture for automatic welding of circumferential weld of evaporating pipe type flame tube |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110016748.0A Active CN112846633B (en) | 2019-04-12 | 2019-04-12 | Evaporation tube type flame tube circumferential weld automatic welding fixture capable of avoiding welding deformation |
| CN201910295037.4A Active CN109848629B (en) | 2019-04-12 | 2019-04-12 | Fixture for automatic welding of circumferential weld of evaporating pipe type flame tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN112935661B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640381A (en) * | 2019-11-01 | 2020-01-03 | 绵阳市金华洋电器制造有限公司 | Special location frock of connector production |
| CN110732766B (en) * | 2019-11-18 | 2021-04-23 | 中国航发贵州黎阳航空动力有限公司 | Method and device for controlling vacuum electron beam welding deformation of flame tube of aircraft engine |
| CN110814551B (en) * | 2019-12-18 | 2024-04-16 | 江南工业集团有限公司 | Multidirectional self-correction laser welding auxiliary device for thin-wall shell and application method |
| CN112589302B (en) * | 2020-11-11 | 2022-05-03 | 中国航发贵州黎阳航空动力有限公司 | Welding deformation control method and device for gas turbine flame tube rectifier ring assembly |
| CN112730763A (en) * | 2020-12-30 | 2021-04-30 | 潘登莲 | Food detection sample storage device with reagent adding function |
| CN113263299B (en) * | 2021-06-21 | 2022-03-04 | 西安远航真空钎焊技术有限公司 | Method for processing cylindrical section of flame tube of gas turbine |
| CN117359059B (en) * | 2023-12-06 | 2024-02-23 | 山东中玮动力科技有限公司 | Combustion chamber flame tube pre-evaporation tube mounting clamp and application method thereof |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3500542B2 (en) * | 1994-04-14 | 2004-02-23 | 日本電信電話株式会社 | Device to prevent intrusion of processing agent and processing debris into the chuck for polishing the end face of optical connector ferrule |
| CN2865945Y (en) * | 2006-01-23 | 2007-02-07 | 许晓华 | Digital control machine tool internal expansion gripping device |
| CN201338176Y (en) * | 2009-01-23 | 2009-11-04 | 沈阳黎发热能燃机设备配件有限公司 | Flame tube gas film ring forming clamp |
| CN201889607U (en) * | 2010-11-05 | 2011-07-06 | 株洲南方燃气轮机成套制造安装有限公司 | Flame tube fixture |
| CN102423858B (en) * | 2011-09-29 | 2014-06-11 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for positioning and clamping welding receiver lathing installation edges and device |
| CN103495622A (en) * | 2013-07-11 | 2014-01-08 | 哈尔滨汽轮机厂有限责任公司 | Shape correcting device of flame tube shell of gas turbine |
| CN103521994B (en) * | 2013-10-31 | 2015-11-18 | 成都发动机（集团）有限公司 | Multisection type thin-walled parts welding jigs and fixtures |
| CN104148851B (en) * | 2014-07-24 | 2016-03-02 | 贵州黎阳航空动力有限公司 | A kind of seamless tensioner weld jig for welding thin-wall barrel girth joint |
| CN104589099B (en) * | 2014-12-03 | 2018-01-05 | 武汉船用机械有限责任公司 | A kind of ring conical thin-wall class part thick for major diameter, thin-walled stands frock and its application of Vehicle Processing |
| CN205043327U (en) * | 2015-10-28 | 2016-02-24 | 中航湖南通用航空发动机有限公司 | Machine casket welding jig |
| CN205111350U (en) * | 2015-11-25 | 2016-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | A device for controlling thin wall runner class parts machining warp |
| CN106425256B (en) * | 2016-11-23 | 2018-01-23 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of two-way positioning thin-wall part weld jig |
| CN116532901A (en) * | 2017-06-27 | 2023-08-04 | 中国航发常州兰翔机械有限责任公司 | Combustion chamber flame tube pre-evaporation tube mounting clamp easy to assemble |
| CN107695137B (en) * | 2017-11-11 | 2019-11-08 | 中国航发贵州黎阳航空动力有限公司 | Straightening method is deformed after a kind of annular flame tube high temperature enamel paint |
-
2019
- 2019-04-12 CN CN202110016873.1A patent/CN112935661B/en active Active
- 2019-04-12 CN CN202110016748.0A patent/CN112846633B/en active Active
- 2019-04-12 CN CN201910295037.4A patent/CN109848629B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112846633A (en) | 2021-05-28 |
| CN109848629B (en) | 2021-01-29 |
| CN112935661A (en) | 2021-06-11 |
| CN112846633B (en) | 2022-04-12 |
| CN109848629A (en) | 2019-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112935661B (en) | Working method of clamp for automatic welding of evaporation tube type flame tube circumferential weld | |
| CN102699706A (en) | Fixing jig for flat head of solid pipe billet | |
| CN112846617B (en) | Multi-section annular pipeline welding deformation control tool | |
| CN113399720B (en) | Outer casing honeycomb ring arc block milling clamp and method | |
| CN105834661A (en) | Tool for assembling and welding | |
| CN105437534A (en) | Positioning device for fan blade welding clamp | |
| KR101745286B1 (en) | The Pipe outer diameter fixed Grip device of Automatic pipe cutter | |
| CN111015045A (en) | Positioning and clamping tool for manual groove grabbing point | |
| WO2018233101A1 (en) | Friction welding flash removal apparatus and friction welding machine | |
| EP3600739B1 (en) | Multifunction tip | |
| CN110757023A (en) | Welding repair method and device for cartridge receiver parts | |
| CN106425570A (en) | Housing clamp of steering gear | |
| CN208304443U (en) | A kind of bull-dozer semiaxis outer circle groove milling mould | |
| CN211939451U (en) | Argon arc welding machine | |
| CN113664466B (en) | Preparation method of gas turbine swirler | |
| CN221311992U (en) | Rounding device for pipe workpieces | |
| CN221289837U (en) | Welding device for welding tool handle | |
| CN114147292B (en) | Profile cutting device | |
| CN215546325U (en) | Fan base welding jig | |
| CN216370822U (en) | Welding fixing device for metal welding | |
| CN219403400U (en) | Clamp with adsorption function | |
| CN215238725U (en) | Wire feeding nozzle for welding | |
| KR100477519B1 (en) | A jig for repairing and manufacturing a clamshell | |
| KR102472969B1 (en) | Flange-integrated non-welding high-pressure transfer pipe manufacturing method | |
| CN113263299B (en) | Method for processing cylindrical section of flame tube of gas turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |