CN111922728A - Vertical in-situ machining system for thin-wall revolving body - Google Patents
Vertical in-situ machining system for thin-wall revolving body Download PDFInfo
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- CN111922728A CN111922728A CN202010753387.3A CN202010753387A CN111922728A CN 111922728 A CN111922728 A CN 111922728A CN 202010753387 A CN202010753387 A CN 202010753387A CN 111922728 A CN111922728 A CN 111922728A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
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- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
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Abstract
The invention provides a vertical in-situ machining system for a thin-wall revolving body, which comprises a frame body, a hoisting clamp, an external pressure clamp, a cylinder section internal support clamp, a box bottom internal support clamp and a machining device. The frame body is provided with a first platform, a second platform and a third platform which can be lifted evenly. The stone tongs detachably installs on first platform. The external pressure clamps are respectively arranged on the opposite surfaces of the second platform and the third platform. The processing device comprises a machine head, a milling cutter and a welding stirring head, wherein the milling cutter and the welding stirring head are selectively arranged on the machine head. One of the opposite surfaces of the second platform and the third platform is provided with a ring-shaped guide rail, and the machine head is slidably arranged on the ring-shaped guide rail. The vertical area that sets up of support body is little, and the solid of revolution remains the state of erectting all the time moreover, and gravity is less to the circularity influence of the solid of revolution, can not appear the barrel section and warp the problem that is difficult to butt weld to the solid of revolution all can accomplish in a station department, need not to change the station, and the operation is simple more swift.
Description
Technical Field
The invention relates to the technical field of large-scale thin-wall revolving body processing, in particular to a vertical in-situ processing system for a thin-wall revolving body.
Background
Most of fuel storage tanks of aerospace vehicles are large thin-wall revolved body structures, and are mainly composed of a front bottom 1, a rear bottom 3 and a plurality of cylinder sections 2, wherein the front bottom 1 and the rear bottom 3 can be spherical structures, ellipsoidal structures or conical structures, and the cylinder sections 2 are cylindrical structures, as shown in fig. 1. Two adjacent cylinder sections 2 and cylinder sections 2 are connected with the front bottom 1 or the rear bottom 3 in a welding mode. In the prior art, a large-sized thin-wall revolving body mechanism usually adopts a horizontal multi-station welding method, and equipment adopted in the horizontal welding method needs to be horizontally arranged, the length of the equipment mostly exceeds 60m, and the occupied area is large; moreover, as the storage tank is of a thin-wall cylindrical structure, the storage tank is easy to deform under the action of gravity when placed horizontally, so that the problems of high butt joint difficulty, low welding precision, poor welding quality and the like are easily caused; in addition, when a horizontal welding method is adopted for processing, different stations are required to be replaced to mill and weld the end face of the cylinder section, so that multiple clamping and dismounting are required, and the process is complicated. Therefore, how to solve the problems that the occupied area of the horizontal multi-station welding method in the prior art is large, the storage tank is easy to deform and multi-station machining is needed is a technical problem that needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to solve the technical problem of providing a thin-wall revolving body tightening device which has small occupied area, can keep a storage box in an upright state in a welding process and does not need to replace stations.
In order to solve the above problems, the present invention provides a vertical in-situ processing system for a thin-wall revolving body, comprising: the device comprises a frame body, a first platform, a second platform and a third platform, wherein the first platform, the second platform and the third platform which are sequentially arranged from top to bottom and can be lifted are arranged on the frame body, and the first platform, the second platform and the third platform are all provided with avoidance holes for a revolving body to pass through; the hoisting clamp is used for fixing the front bottom of the revolving body and is detachably connected with the first platform; the two external pressure clamps are respectively arranged on the opposite end surfaces of the second platform and the third platform, and are used for pressing the outer side wall of the revolving body; the inner supporting clamp comprises a barrel section inner supporting clamp and a box bottom inner supporting clamp, wherein the barrel section inner supporting clamp is used for supporting the inner wall of the barrel section from the inside of the barrel section, and the box bottom inner supporting clamp is used for supporting the inner wall of the rear bottom from the inside of the rear bottom of the revolving body; the machining device comprises a machine head, a milling cutter and a welding stirring head, wherein any one of the milling cutter and the welding stirring head can be selectively arranged on the machine head, the machine head is used for driving the milling cutter or the welding stirring head to rotate, one of the end surfaces of the third platform opposite to the second platform is provided with an annular guide rail, the machine head is arranged on the annular guide rail in a sliding mode, and the machining device further comprises a driving device used for driving the machine head to move around the annular guide rail.
Preferably, the hoisting fixture comprises a hoisting frame, a connecting ring used for being connected with the end frame of the front bottom is arranged at the bottom of the hoisting frame, the connecting ring is used for being connected with the end frame of the front bottom through a fastener, a connecting rod is arranged at the top of the hoisting frame, and the connecting rod is used for being detachably connected with the first platform through the fastener.
Preferably, each external pressure anchor clamps all include support, swing arm, pressure head and first linear drive device, the quantity of support is a plurality of, and is a plurality of the support is followed the circumference of section of thick bamboo section distributes, the swing arm the pressure head with first linear drive device all with the same and the one-to-one of quantity of support, the swing arm with the support is articulated, the pressure head set up in swing arm first end is in order to be used for compressing tightly the outer wall of section of thick bamboo section, first linear drive device one end with swing arm second end is articulated, the other end with the support is articulated.
Preferably, the pressure head is arc pressure head, and its inner profile arc diameter with the periphery wall diameter of section of thick bamboo section is the same, the pressure head with the swing arm is connected through horizontal rotating shaft rotationally.
Preferably, the barrel section internal support fixture comprises a first base, a plurality of support plates, a plurality of jacking blocks, a second linear driving device and a third linear driving device, wherein the first base is adjustable in height, the number of the support plates is multiple, the plurality of support plates are arranged along the circumferential direction of the first base and are used for supporting the lower end face of the barrel section, a first guide mechanism is arranged on the first base along the vertical direction, the number of the first guide mechanism is the same as that of the support plates and corresponds to that of the support plates one by one, the support plates are slidably arranged on the corresponding first guide mechanisms, the second linear driving device is used for driving the support plates to move, the number of the jacking blocks is multiple, the first base is also provided with a second guide mechanism which is the same as that of the jacking blocks in number and corresponds to that of the jacking blocks one by one, the second guide mechanisms are distributed along the circumferential direction of the barrel section and extend along the radial direction of the barrel section respectively, the ejector block is slidably arranged on the second guide mechanism, and the third linear driving device is used for driving the ejector block to move.
Preferably, the section of thick bamboo internal stay anchor clamps still include the tight ring that props that is loop configuration, each the kicking block all with the inner wall of propping tight ring offsets, in order to pass through prop tight ring and prop tightly section of thick bamboo inner wall.
Preferably, the box bottom inner supporting fixture comprises a second base, a center frame and a plurality of supporting mechanisms, the second base is adjustable in height, the center frame is provided with a fourth linear driving device extending along the axial direction of the center frame, the number of the supporting mechanisms is multiple, the plurality of supporting mechanisms are distributed along the circumferential direction of the center frame, each supporting mechanism comprises a supporting rod, a connecting rod and a correcting block, the first section of the supporting rod can stretch relative to the second section of the supporting rod, the first section of the supporting rod is hinged with the center frame, one end of the connecting rod is hinged with a moving part of the fourth linear driving device, the other end of the connecting rod is hinged with the first section of the supporting rod, so that the fourth linear driving device drives the supporting rod to rotate around a hinge point of the supporting rod and the center frame through the connecting rod, the correcting block is arranged on the second section of the supporting rod, and the correcting block comprises two arc blocks, the two arc blocks are respectively arranged on two sides of the supporting rod and are hinged with the supporting rod, and the tightening mechanism further comprises a driving mechanism for driving the arc blocks to rotate.
Preferably, the box bottom internal support fixture further comprises end frame supporting mechanisms for supporting the end frames of the rear bottom, wherein the end frame supporting mechanisms are multiple in number and distributed along the circumferential direction of the rear bottom.
Preferably, the machine head is slidably connected with the annular guide rail through a machine head seat, a fourth guide mechanism extending along the radial direction of the cylinder section is arranged on the machine head seat, the machine head is slidably mounted on the fourth guide mechanism, and the machine head further comprises a sixth linear driving device for driving the machine head to move along the fourth guide mechanism.
Preferably, still include welding seam detection device and resistance welding device, welding seam detection device and resistance welding device all slidable set up in on the ring rail.
According to the technical scheme, the vertical in-situ machining system for the thin-wall revolving body comprises a frame body, a hoisting clamp, an external pressure clamp, a cylinder section internal support clamp, a box bottom internal support clamp and a machining device. The frame body is provided with a first platform, a second platform and a third platform which can be lifted evenly. And the hoisting clamp used for fixing the front bottom of the revolving body is detachably arranged on the first platform. The number of the external pressure clamps is two, and the two external pressure clamps are respectively arranged on the opposite surfaces of the second platform and the third platform. The processing device comprises a machine head, a milling cutter and a welding stirring head, wherein the milling cutter and the welding stirring head are selectively arranged on the machine head, and the machine head is used for driving the milling cutter or the welding stirring head to rotate. One of the opposite surfaces of the second platform and the third platform is provided with a ring-shaped guide rail, the machine head is slidably arranged on the ring-shaped guide rail, and the machine head further comprises a driving device for driving the machine head to slide along the ring-shaped guide rail.
During the use, will be preceding the end fixed to stone tongs to be connected to stone tongs on the first platform, then will treat a welded section of thick bamboo and set up on section of thick bamboo internal stay anchor clamps, and will this section of thick bamboo internal stay anchor clamps remove to the first platform below in the support body, loosen section of thick bamboo internal stay anchor clamps, and stretch into preceding end with section of thick bamboo internal stay anchor clamps, prop the preceding end from inside tightly. And moving the second platform to the outside of the front bottom, enabling an external pressure clamp on the second platform to tightly press the outer wall of the front bottom, then installing a milling cutter on the machine head, and milling the whole lower end face of the front bottom by using the milling cutter. And after the lower end face of the front bottom is milled, loosening the barrel section internal support clamp and the external pressure clamp on the second platform. And continuously utilizing the cylinder section inner supporting clamp to support the cylinder section to be welded, enabling the outer pressing clamp on the third platform to press the outer wall of the cylinder section, and utilizing the milling cutter to mill the whole upper end face of the cylinder section. And after the upper end surface of the cylinder section is milled, loosening the cylinder section internal support clamp and the external pressure clamp on the third platform. Aligning the bottom end face of the front bottom with the upper end face of the cylinder section to be welded, tightly supporting the joint of the front bottom and the cylinder section to be welded by using the cylinder section internal supporting clamp, and tightly pressing the joint of the front bottom and the cylinder section to be welded from the outer side by using the two external pressing clamps. And (3) detaching the milling cutter on the machine head, replacing the milling cutter with a welding stirring head, and performing friction stir welding on the joint of the front bottom and the cylinder section to be welded. And after the front bottom and the cylinder sections to be welded are welded, moving the first platform upwards, moving the cylinder section internal support fixture out, mounting another cylinder section to be welded on the cylinder section internal support fixture, and repeating the process until all the cylinder sections are welded. After the welding of the cylinder section is finished, the back bottom is welded, and the welding process of the back bottom is similar to that of the cylinder section except for different used internal support clamps. And after the welding of the rear bottom is finished, the rear bottom internal support clamp is moved out, and the hoisting clamp and the welded revolving body are hoisted out together in a hoisting mode of a crane, so that the whole machining process is finished.
So set up, the support body keeps vertical setting area little, and the solid of revolution remains the state of erectting all the time among the welding process moreover, and gravity is less to the circularity influence of the solid of revolution, can not appear the horizontal problem of placing the section of thick bamboo deformation that leads to and be difficult to butt weld to all can accomplish in a station department milling terminal surface and welding etc. to preceding end, section of thick bamboo and back end, need not to change the station, operate simple more swiftly. In addition, when the cylinder section, the front bottom, the rear bottom and the like are welded, the cylinder section, the front bottom, the rear bottom and the like are fixed in an inner supporting and outer pressing mode, so that the welding deformation of the revolving body can be effectively reduced, and the welding precision is ensured. And through the mode of welding section by section, can realize the production of the body of revolution structure of arbitrary length in the support body height scope.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a large thin-wall rotator;
FIG. 2 is a schematic structural diagram of a vertical in-situ thin-wall rotary body machining system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a frame body of the thin-wall revolving body vertical in-situ processing system in FIG. 2;
FIG. 4 is a schematic structural diagram of a lifting fixture of the thin-wall revolving body vertical in-situ machining system in FIG. 2;
fig. 5 is a mounting state of an external pressure clamp on a second platform and a third platform of the thin-wall revolving body vertical in-situ processing system in fig. 2;
FIG. 6 is a schematic structural diagram of a barrel section inner support fixture of the thin-wall revolving body vertical in-situ processing system in FIG. 2;
FIG. 7 is a view of part I of FIG. 6;
FIG. 8 is a schematic structural view of an external pressure jig according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of a box bottom internal bracing fixture in the embodiment of the invention;
FIG. 10 is a schematic view of the case bottom internal stay clamp of FIG. 9 engaged with the rear bottom;
FIG. 11 is a schematic view of a welding process for two parts to be welded;
FIG. 12 is a schematic structural view of an end frame support mechanism according to an embodiment of the present invention;
FIG. 13 is a schematic structural view of an arcuate block in an embodiment of the present invention;
FIG. 14 is a diagram showing the operation of the weld detecting apparatus and the electric resistance welding apparatus according to the embodiment of the present invention.
In fig. 1-14:
1. a front bottom; 2. a barrel section; 3. a rear bottom; 4. a frame body; 5. a first platform; 6. a second platform; 7. a third platform; 8. a machine head; 9. a connecting ring; 10. a connecting rod; 11. a support; 12. swinging arms; 13. a pressure head; 14. a first base; 15. a support plate; 16. a top block; 17. a tensioning ring; 18. ejecting the head; 19. a second base; 20. a center frame; 21. a stay bar; 22. a connecting rod; 23. a drive mechanism; 24. an arc-shaped block; 25. a fifth linear drive; 26. milling cutters; 27. welding a stirring head; 29. a guide bar; 30. a guide block; 31. a swing rod; 32. a housing; 33. a jacking mechanism; 34. positioning pins; 35. a detection head; 36. an electric resistance welding head.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the invention recited in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1 to 14, the vertical in-situ machining system for the thin-wall revolving body provided in the embodiment of the present invention includes a frame body 4, a hoisting fixture, an external pressure fixture, an internal support fixture, and a machining device. The frame body 4 can be a truss structure formed by welding, the frame body 4 is provided with a first platform 5, a second platform 6 and a third platform 7 which are sequentially arranged from top to bottom and can be lifted, and the first platform 5, the second platform 6 and the third platform 7 are provided with avoiding holes for the revolving body to pass through. For example, a guide rail is provided on the frame body 4 in a vertical direction, the first platform 5, the second platform 6 and the third platform 7 are slidably provided on the guide rail of the frame body 4 by a slider, and the first platform 5, the second platform 6 and the third platform 7 can be driven to move up and down by means of a lead screw nut. Taking the first platform 5 as an example, a rotatable lead screw is arranged on the frame body 4, the lead screw is driven by a servo motor, a nut used for being in threaded fit with the lead screw is arranged on the first platform 5, and the lifting of the first platform 5 can be controlled by controlling the servo motor. The second stage 6 and the third stage 7 are the same. Referring to fig. 2, an opening is formed at one side of the frame body to facilitate loading and unloading of the workpiece. Referring to fig. 2 and 3, the first platform 5, the second platform 6 and the third platform 7 may be all in a ring structure, and the annular space thereof constitutes the avoiding hole. Wherein, the hoisting clamp is used for fixing the front bottom 1 of the revolving body, and the hoisting clamp is detachably connected with the first platform 5. Referring to fig. 5, the number of the external pressure jigs is two, and the two external pressure jigs are respectively disposed on the opposite end surfaces of the second platform 6 and the third platform 7, and each external pressure jig is used for pressing the outer side of the rotation body. The internal bracing fixture comprises a barrel section internal bracing fixture for supporting the inner wall of the barrel section 2 from the inside of the barrel section 2 and a box bottom internal bracing fixture for supporting the inner wall of the rear bottom 3 from the inside of the rear bottom 3 of the revolving body.
Wherein the processing device comprises a head 8, a milling cutter 26 and a welding stirring head 27. Either the milling cutter 26 or the welding stirring head 27 is selectively mounted on the head 8, and the head 8 is used for driving the milling cutter 26 or the welding stirring head 27 to rotate. For example, the machine head 8 is provided with a rotatable spindle and a driving motor in transmission connection with the spindle, and the driving motor may be in transmission connection with the spindle through a coupler or a reducer to drive the spindle to rotate. While the milling cutter 26 or welding head 27 may be mounted to the spindle by a tool shank of the prior art for rotation therewith. The milling cutter 26 is rotated to perform milling, and the welding pin 27 is rotated to perform friction stir welding. One of the end surfaces of the third platform 7 opposite to the second platform 6 is provided with an annular guide rail, and the annular guide rail is arranged coaxially with the revolving body. Referring to fig. 2, the ring rail is provided on the third stage 7. The head 8 is slidably arranged on the annular guide rail. The thin-wall revolving body vertical in-situ machining system further comprises a driving device for driving the machine head 8 to move around the annular guide rail. For example, the driving device may include a circular rack coaxially disposed with the annular guide rail, a gear in meshing transmission with the circular rack, and a motor in driving connection with the gear, wherein the rack is also fixedly disposed on the third platform 7, the motor may be fixed to the handpiece 8, the gear may be in key connection with an output shaft of the motor, and the motor drives the gear to mesh with the rack, thereby driving the handpiece 8 to displace along the annular guide rail.
During the use, fix preceding end 1 on stone tongs to on being connected to stone tongs 5, then will treat a barrel section 2 of welded and set up on barrel section internal stay anchor clamps, and with this barrel section internal stay anchor clamps remove to the first platform 5 below in the support body 4. As shown in the first picture from the left in fig. 11, the barrel section internal support fixture is loosened, the barrel section internal support fixture is extended into the front bottom 1, the front bottom 1 is tightly supported from the inside, the second platform 6 is moved to the outside of the front bottom 1, the external pressure fixture on the second platform 6 is pressed against the outer wall of the front bottom 1, the milling cutter 26 is mounted on the machine head 8, and the whole lower end face of the front bottom 1 is milled by the milling cutter 26. And after the lower end face of the front bottom 1 is milled, loosening the barrel section internal support clamp and the external pressure clamp on the second platform 6. As shown in the second picture from the left in fig. 11, the cylinder segment 2 to be welded is re-braced by the cylinder segment inner bracing jig, and the outer pressing jig on the third platform 7 is pressed against the outer wall of the cylinder segment 2, and the entire upper end surface of the cylinder segment 2 is milled by the milling cutter 26. After the upper end face of the cylinder section 2 is milled, the cylinder section internal bracing fixture and the external pressing fixture on the third platform 7 are loosened. Referring to the third picture from the left in fig. 11, the lower end surface of the front bottom 1 is aligned with the upper end surface of the cylinder section 2 to be welded, and the joint of the front bottom 1 and the cylinder section 2 to be welded is tightened by the cylinder section inner bracing fixture, and both outer pressing fixtures are pressed from the outside at a position close to the joint of the front bottom 1 and the cylinder section 2 to be welded. Referring to the fourth drawing from the left in fig. 11, the milling cutter 26 of the head 8 is removed and replaced with a welding tool 27, and friction stir welding is performed on the joint seam between the front base 1 and the barrel section 2 to be welded. After the front bottom 1 and the cylinder sections 2 to be welded are welded, the first platform 5 is moved upwards, the cylinder section internal support fixture is moved out, another cylinder section 2 to be welded is installed on the cylinder section internal support fixture, and the process is repeated until all the cylinder sections 2 are welded. And after the welding of the cylinder section 2 is finished, welding the back bottom 3 and the back bottom 3, wherein the welding process of the rest parts is similar to that of the cylinder section 2 except for different used internal support clamps, and is not repeated. And after the welding of the rear bottom 3 is finished, the rear bottom internal support clamp is moved out, and the hoisting clamp and the welded revolving body are hoisted out together in a hoisting mode by a crane to finish the whole machining process.
So set up, support body 4 keeps vertical setting area little, saves space, and the solid of revolution remains the state of erectting throughout among the welding process moreover, and gravity is less to the circularity influence of the solid of revolution, and the problem that the section of thick bamboo 2 that leads to warp when the level is placed is difficult to butt weld can not appear. Milling end faces, friction stir welding and the like of the front bottom 1, the barrel section 2 and the rear bottom 3 can be finished at one station without replacing the station, the operation is simpler and faster, and the problem that assembly errors are easily generated due to repeated clamping is avoided. In addition, when the cylinder section 2, the front bottom 1, the rear bottom 3 and the like are welded, the cylinder section, the front bottom and the rear bottom are fixed in an inner supporting and outer pressing mode, welding deformation of a revolving body can be effectively reduced, and welding precision is guaranteed. And through the mode of welding section by section, can realize the production of the solid of revolution structure of arbitrary length in the range of support body 4 height for the vertical normal position system of processing of thin wall solid of revolution can process the product of multiple specification, and application scope is wider.
Referring to fig. 4, in some embodiments, the lifting clamp includes a lifting frame, which may be formed by welding profiles or the like. The bottom of the hoisting frame is provided with a connecting ring 9 used for being connected with the end frame of the front bottom 1, the connecting ring 9 can be connected with the end frame of the front bottom 1 through a fastener, as shown in the reference of figure 1, the end frame of the front bottom 1 is also in an annular structure, and the end frame of the front bottom 1 is provided with a through hole. When the front bottom 1 needs to be fixed on a hoisting clamp, firstly, the connecting ring 9 of the hoisting frame is opposite to the end frame of the front bottom 1, and then the connecting ring 9 and the end frame of the front bottom 1 are fixed by bolts, so that the hoisting clamp is simple and convenient and is stable in connection. The top of the hoisting frame is provided with a connecting rod 10, and the connecting rod 10 is detachably connected with the first platform 5 through a fastener. Referring to fig. 2, the connecting rod 10 may be lapped on the first platform 5, and the connecting rod 10 may be connected and fixed with the first platform 5 by a screw. When in use, the front bottom 1 is fixed on the connecting ring 9, and the hoisting clamp is hung on the first platform 5 by a crane for installation.
Referring to fig. 5 and 8, in some embodiments, each external pressure jig includes a support 11, a swing arm 12, a ram 13, and a first linear driving device. Each external pressure jig includes a plurality of seats 11, and the plurality of seats 11 are distributed along the circumferential direction of the barrel section 2. The swing arms 12, the pressure heads 13 and the first linear driving devices are the same in number as the supports 11 and correspond to the supports one by one. Swing arm 12 is articulated with support 11, and pressure head 13 sets up in swing arm 12 first end in order to be used for compressing tightly the outer wall of section of thick bamboo 2. One end of the first linear driving device is hinged with the second end of the swing arm 12, and the other end of the first linear driving device is hinged with the support 11. When the first linear driving device stretches, the swing arm 12 can be driven to rotate around the hinged point of the swing arm 12 and the support 11. For example, when the first linear driving device is extended, the swing arm 12 can drive the pressing head 13 to press against the outer wall of the revolving body, and when the first linear driving device is shortened, the swing arm 12 can drive the pressing head 13 to move away from the outer wall of the revolving body. Alternatively, the first linear drive means may be a pneumatic cylinder or an electric cylinder.
Referring to fig. 8, the pressing head 13 is an arc-shaped pressing head 13, and the diameter of the arc of the inner contour of the pressing head 13 is the same as that of the outer peripheral wall of the barrel section 2, so that the pressing head 13 can better fit the outer peripheral wall of the revolving body. The pressure head 13 is rotatably connected with the swing arm 12 through a horizontal rotating shaft. With such an arrangement, even if there is a mounting error or the like, the pressing head 13 can be always attached to the outer peripheral wall of the rotator in a self-adaptive manner when pressing the outer peripheral wall of the rotator, thereby providing a better pressing effect.
Referring to fig. 6-7, in some embodiments, the cartridge section internal support fixture includes a first base 14, a support plate 15, a top block 16, a second linear drive, and a third linear drive. The first base 14 is height adjustable. Referring to fig. 6, the first base 14 includes an upper portion and a lower portion connected by a plurality of vertical rods, and optionally, the vertical rods are fixedly connected to the lower portion of the first base 14 and slidably connected to the upper portion of the first base 14, so that the upper portion of the first base 14 can be displaced up and down. The lower part of the first base 14 can be provided with a motor and a lead screw in transmission connection with the motor, and the upper part of the first base 14 is provided with a nut in threaded fit with the lead screw, so that the upper part of the first base 14 is driven to lift in a lead screw nut mode, and the effect of adjusting the height of the first base 14 is achieved.
The number of the supporting plates 15 is plural, and the plural supporting plates 15 are arranged along the circumferential direction of the first chassis to support the lower end face of the barrel section 2. First guide mechanisms arranged in the vertical direction are arranged on the first base 14, the number of the first guide mechanisms is the same as that of the support plates 15, the first guide mechanisms correspond to the support plates 15 one by one, and the support plates 15 are slidably arranged on the corresponding first guide mechanisms. For example, the first guide mechanism may be a guide rail on which the support plate 15 is slidably mounted by a slider. The second linear driving device is used for driving the support plate 15 to displace, and for example, the second linear driving device may be an air cylinder or an electric cylinder. Alternatively, the number of the second linear driving devices is the same as the number of the support plates 15 and corresponds to one. The supporting plate 15 can support the cylinder section 2; on the other hand, referring to fig. 11, during the welding process of the two barrel sections 2 or the front bottom 1 and the barrel section 2, the adjusting support plate 15 is lowered, the pressing block of the supporting fixture in the barrel section can protrude out of the upper end face of the barrel section 2 below, then the first support 11 is raised, and the pressing block can enter the barrel section 2 above or the front bottom 1 to be tightly supported, so as to mill the lower end face of the barrel section 2 above or the lower end face of the front bottom 1.
Referring to fig. 7, the number of the top blocks 16 is multiple, and the first base 14 is further provided with second guiding mechanisms, the number of which is the same as that of the top blocks 16 and the second guiding mechanisms correspond to one another. A plurality of second guiding mechanisms are distributed along the circumference of the barrel section 2 and respectively extend along the radial direction of the barrel section 2, the top block 16 is slidably disposed on the second guiding mechanisms, for example, the second guiding mechanisms are guide rails, and a guide groove slidably engaged with the guide rails is disposed on the top block 16. The third linear drive is used for driving the top block 16 to displace. The third linear drive may be a pneumatic cylinder or an electric cylinder. Referring to fig. 7, the housing of the third linear actuator is hinged to the first base 14, and the movable part of the third linear actuator is hinged to the top block 16 to push the top block 16 to displace along the second guide mechanism.
In order to ensure the roundness of the tightened cylinder section 2, in some embodiments, the cylinder section internal bracing fixture further comprises a bracing ring 17 in an annular structure, and each top block 16 abuts against the inner wall of the bracing ring 17. So set up, prop tight in-process, third linear drive device promotes kicking block 16, each kicking block 16 top tightly with prop tight ring 17's inner wall for prop tight ring 17 tight section of thick bamboo section 2 that rises, utilize the deformation of propping tight ring 17 to prop tightly from section of thick bamboo section 2 inside promptly, so can avoid because the poor problem of circularity when each third linear drive device operation is asynchronous or installation error etc. leads to section of thick bamboo section 2 to be propped tightly, guarantee to be propped tight section of thick bamboo section 2's circularity.
Optionally, a plug 18 is disposed at a front end of each of the top blocks 16, a third guide mechanism extending in the vertical direction is disposed on the top block 16, and the plug 18 is slidably disposed on the third guide mechanism. For example, the third guiding mechanism is a vertically arranged guide rail, and the plug 18 is provided with a guide groove which is in sliding fit with the guide rail. Each of the top blocks 16 is connected to the tightening ring 17 via a corresponding head 18. And each top 18 can move up and down along the top block 16, so that the supporting position of the cylinder section 2 can be adjusted along the vertical direction by the cylinder section internal supporting clamp.
Referring to fig. 9-10, in some embodiments, the bottom internal bracing fixture includes a second base 19, a center frame 20, and a bracing mechanism. The height of the second base 19 is adjustable, and the specific arrangement form of the second base 19 can refer to the first base 14, and the structures of the two are the same, and are not described again.
Referring to fig. 10, the center frame 20 is provided with a fourth linear driving means extending in an axial direction thereof. The number of the tightening mechanisms is plural, and the plural tightening mechanisms are distributed along the circumferential direction of the center frame 20. Each tightening mechanism comprises a stay bar 21, a connecting rod 22 and a correcting block. The connecting rods 22 and the shape correcting blocks are in one-to-one correspondence with the support rods 21. The first section of the strut is retractable relative to the second section of the strut. For example, the first section of the stay bar is slidably connected with the second section of the stay bar, and the first section of the stay bar is provided with an air cylinder, and a piston rod of the air cylinder is connected with the second section of the stay bar so as to drive the second section of the stay bar to displace relative to the first section of the stay bar. The first section of the stay bar 21 is hinged with the center frame 20, one end of the connecting rod 22 is hinged with the moving part of the fourth linear driving device, and the other end of the connecting rod 22 is hinged with the first section of the stay bar 21, so that the fourth linear driving device drives the stay bar 21 to rotate around the hinged point of the stay bar 21 and the center frame 20 through the connecting rod 22. For example, the fourth linear drive may be a screw lift, an electric cylinder, or an air cylinder. The push rod or piston rod thereof constitutes the moving part of the fourth linear driving device. When the fourth linear driving device extends and retracts, the connecting rod 22 can drive the support rod 21 to rotate around a hinge point between the support rod 21 and the center frame 20. For example, when the fourth linear driving device is extended, the stay bar 21 is in a horizontal state, and then the stay bar is controlled to extend to tightly support the inner wall of the rear sole 3; when the fourth linear driving device retracts, the support rod 21 is in a vertical state so as to reduce the radial size of the box bottom internal support clamp, and the box bottom internal support clamp can be conveniently taken out from the welded revolving body structure.
Referring to fig. 13, the calibration blocks are disposed at an end of the second section of the stay 21 away from the center frame, and each calibration block includes two arc-shaped blocks 24. The two arc blocks 24 are respectively arranged at two sides of the stay bar 21 and are respectively hinged with the stay bar 21. The tightening mechanism further comprises a driving mechanism 23 for driving the arc-shaped blocks to rotate. The number of the driving mechanisms 23 is the same as the number of the arc-shaped blocks and corresponds to one. For example, the driving mechanism 23 may be an air cylinder or an electric cylinder. The arc blocks are provided with sliding grooves, one end of each driving mechanism 23 is hinged to the second section of the support rod, and the other end of each driving mechanism is slidably arranged in the sliding groove of the corresponding arc block through a pin shaft. Referring to fig. 13, when the driving mechanism 23 is extended, the arc blocks can be opened to tighten the inner wall of the rear bottom; when the driving mechanism is shortened, the arc-shaped blocks are folded, so that when the support rod can rotate to a vertical folding state, the adjacent arc-shaped blocks cannot interfere.
Referring to fig. 10, in order to increase the rigidity of the tightening mechanism, in some embodiments, the tightening mechanism further includes a fifth linear driving device 25, and the fifth linear driving device 25 is hinged to the center frame 20 at one end and is hinged to a sliding seat at the other end, and the sliding seat is slidably disposed in a slide way axially disposed along the stay 21. The fifth linear driving device can be an air cylinder, the fifth linear driving device can keep a follow-up state in the rotation process of the support rod, and when the support rod is in a horizontal state, the fifth linear driving device is cut off and locked, so that the fifth linear driving device can provide supporting force for the support rod, the rigidity of the support rod is improved, and the stability of the support rod during tightening is improved.
In some embodiments, the box bottom internal support fixture further comprises an end frame support mechanism for supporting the end frame of the back bottom 3. The number of the end frame supporting mechanisms is multiple, and the end frame supporting mechanisms are distributed along the circumferential direction of the rear bottom 3. Alternatively, the end frame supporting mechanism may adopt the same structure as the supporting plate 15 in the barrel section internal support jig to support and adjust the height of the rear sole 3. Of course, the end frame supporting mechanism may also adopt the structure as shown in fig. 12, which may include a housing 32, a guide rod 29 rotatably connected to the housing 32, a guide block 30 in threaded fit with the guide rod 29, a swing link 31 rotatably connected to the housing 32 at the middle portion, a positioning pin 34 and a tightening mechanism 33. The housing 32 further has a guide groove slidably engaged with the guide block 30 and preventing the guide block 30 from rotating, and the guide bar 29 can drive the guide block 30 to move along the guide groove when rotating. The guide block 30 is provided with a groove for the lower end of the swing rod 31 to extend into, the upper end of the swing rod 31 is used for supporting the end frame of the rear bottom 3, and the guide block 30 can drive the lower end of the swing rod 31 to move when moving, so that the swing rod 31 rotates, and the upper end of the swing rod 31 jacks up or puts down the end frame of the rear bottom 3. The housing 32 is further provided with positioning pins 34 for engaging with the through holes in the end frame of the rear sole 3 to position the rear sole 3 in the circumferential direction. The tightening mechanism 33 is used for tightening from the outside of the end frame of the rear sole 3.
In some embodiments, the head 8 is slidably coupled to the ring rail via a head mount. The machine head is arranged on the machine head seat, the machine head seat is arranged on the annular guide rail, the motor for driving the gear is arranged on the machine head seat, and the motor can drive the machine head seat to slide along the annular guide rail when the motor drives the gear to rotate. The head seat is provided with a fourth guide mechanism which extends along the radial direction of the cylinder section 2, and the head 8 can be arranged on the fourth guide mechanism in a sliding way. For example, the fourth guiding mechanism is a guide rail, and the head 8 is provided with a guide groove in sliding fit with the guide rail. And a sixth linear driving device for driving the machine head 8 to displace along the fourth guide mechanism. For example, the sixth linear driving device includes a servo motor, a lead screw in transmission connection with the servo motor, and a nut in threaded engagement with the lead screw. The servo motor is fixed on the machine head seat, the nut is connected with the machine head 8, and the machine head 8 can be driven to move along the fourth guide mechanism by rotating the lead screw. By the arrangement, the machine head 8 can feed along the radial direction of the revolving body, so that the thin-wall revolving body vertical in-situ processing system can process the revolving bodies with different diameters, and the application range of the thin-wall revolving body vertical in-situ processing system is enlarged.
In some embodiments, the vertical in-situ thin-wall revolving body processing system further comprises a weld detecting device and an electric resistance welding device, wherein the weld detecting device and the electric resistance welding device are slidably arranged on the annular guide rail. It should be noted that both the weld seam detection device and the electric resistance welding device belong to the prior art, and the structural principle thereof is not described again. The welding detection device and the resistance welding device can be connected with the machine head 8 together, so that the welding detection device and the resistance welding device can be displaced along the annular guide rail together with the machine head 8, and of course, the welding detection device and the resistance welding device can also be respectively provided with a driving device which is the same as the machine head 8 and can independently operate. Referring to fig. 14, by providing the welding detection device, the detection head 35 of the welding detection device can detect the weld after the welding of the welding stirring head 27 is completed, record the position with the welding defect, and then perform repair welding on the weld at the defective position by using the resistance welding head 36 of the resistance welding device to eliminate the defect of the weld.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a vertical normal position system of processing of thin wall solid of revolution which characterized in that includes:
the device comprises a frame body (4), wherein a first platform (5), a second platform (6) and a third platform (7) which are sequentially arranged from top to bottom and can be lifted up and down are arranged on the frame body, and the first platform (5), the second platform (6) and the third platform (7) are provided with avoidance holes for a revolving body to pass through;
the hoisting clamp is used for fixing the front bottom (1) of the revolving body and is detachably connected with the first platform (5);
the number of the external pressure clamps is two, the two external pressure clamps are respectively arranged on the opposite end surfaces of the second platform (6) and the third platform (7), and each external pressure clamp is used for pressing the outer side wall of the revolving body;
the inner supporting clamp comprises a barrel section inner supporting clamp for supporting the inner wall of the barrel section (2) from the inside of the barrel section (2), and a box bottom inner supporting clamp for supporting the inner wall of the rear bottom (3) from the inside of the rear bottom (3) of the revolving body;
the machining device comprises a machine head (8), a milling cutter (26) and a welding stirring head (27), wherein any one of the milling cutter (26) and the welding stirring head (27) can be selectively installed on the machine head (8), the machine head (8) is used for driving the milling cutter (26) or the welding stirring head (27) to rotate, one of end faces, opposite to the second platform (6), of the third platform (7) is provided with an annular guide rail, the machine head (8) is slidably arranged on the annular guide rail, and the machining device further comprises a driving device used for driving the machine head (8) to displace around the annular guide rail.
2. The vertical in-situ machining system for the thin-wall revolving body according to claim 1, wherein the hoisting clamp comprises a hoisting frame, a connecting ring (9) used for being connected with an end frame of the front bottom (1) is arranged at the bottom of the hoisting frame, the connecting ring (9) is used for being connected with the end frame of the front bottom (1) through a fastener, a connecting rod (10) is arranged at the top of the hoisting frame, and the connecting rod (10) is used for being detachably connected with the first platform (5) through the fastener.
3. The vertical in-situ machining system for the thin-wall revolving body according to claim 1, wherein each external pressure clamp comprises a support (11), a swing arm (12), a pressure head (13) and a first linear driving device, the number of the supports (11) is multiple, the multiple supports (11) are distributed along the circumferential direction of the barrel section (2), the swing arm (12), the pressure head (13) and the first linear driving device are all the same as and in one-to-one correspondence with the number of the supports (11), the swing arm (12) is hinged to the support (11), the pressure head (13) is arranged at a first end of the swing arm (12) and used for pressing the outer wall of the barrel section (2), one end of the first linear driving device is hinged to a second end of the swing arm (12), and the other end of the first linear driving device is hinged to the support (11).
4. The vertical in-situ machining system of the thin-wall revolving body according to claim 3, characterized in that the pressure head (13) is an arc-shaped pressure head (13), the diameter of the arc-shaped inner contour of the pressure head is the same as that of the outer peripheral wall of the barrel section (2), and the pressure head (13) and the swing arm (12) are rotatably connected through a horizontal rotating shaft.
5. The vertical in-situ machining system for the thin-wall revolving body according to claim 1, wherein the drum section internal supporting fixture comprises a first base (14), a plurality of supporting plates (15), a top block (16), a second linear driving device and a third linear driving device, the height of the first base (14) is adjustable, the number of the supporting plates (15) is multiple, the plurality of the supporting plates (15) are arranged along the circumferential direction of the first base (14) and are used for supporting the lower end surface of the drum section (2), the first base (14) is provided with a first guiding mechanism arranged along the vertical direction, the number of the first guiding mechanism is the same as the number of the supporting plates (15) and corresponds to one another, the supporting plates (15) are slidably arranged on the corresponding first guiding mechanisms, and the second linear driving device is used for driving the supporting plates (15) to move, the quantity of kicking block (16) is a plurality of, still be equipped with on first base (14) with kicking block (16) quantity is the same and the second guiding mechanism of one-to-one, and is a plurality of second guiding mechanism follows the circumference distribution of section of thick bamboo section (2) and follow respectively the radial extension of section of thick bamboo section (2), kicking block (16) slidable set up in on the second guiding mechanism, third linear drive device is used for the drive kicking block (16) displacement.
6. The vertical in-situ machining system for the thin-wall revolving body of claim 5, wherein the barrel section internal bracing fixture further comprises a bracing ring (17) in an annular structure, and each top block (16) abuts against the inner wall of the bracing ring (17) so as to brace the barrel section inner wall through the bracing ring (17).
7. The vertical in-situ machining system of the thin-wall revolving body according to claim 1, wherein the box bottom internal bracing fixture comprises a second base (19), a center frame (20) and bracing mechanisms, the second base (19) is adjustable in height, a fourth linear driving device extending along the axial direction of the center frame (20) is arranged on the center frame, the number of the bracing mechanisms is multiple, the bracing mechanisms are distributed along the circumferential direction of the center frame (20), each bracing mechanism comprises a bracing rod (21), a connecting rod (22) and a correcting block, the first section of the bracing rod (21) can stretch and retract relative to the second section of the bracing rod (21), the first section of the bracing rod (21) is hinged with the center frame, one end of the connecting rod (22) is hinged with a moving part of the fourth linear driving device, and the other end of the connecting rod (22) is hinged with the first section of the bracing rod (21), so that fourth linear drive passes through connecting rod (22) drives vaulting pole (21) wind vaulting pole (21) with the pin joint of centre frame rotates, school shape piece set up in on vaulting pole (21) second section, just school shape piece includes two arc pieces (24), two arc pieces (24) set up respectively in the both sides of vaulting pole (21) and all with vaulting pole (21) are articulated, prop tight mechanism still including being used for the drive arc piece (24) pivoted actuating mechanism.
8. The vertical in-situ machining system for the thin-wall revolving body according to claim 7, wherein the box bottom internal bracing fixture further comprises a plurality of end frame supporting mechanisms for supporting the end frames of the rear bottom (3), and the plurality of end frame supporting mechanisms are distributed along the circumferential direction of the rear bottom (3).
9. The vertical in-situ machining system for the thin-wall revolving body according to claim 1, wherein the machine head (8) is slidably connected with the annular guide rail through a machine head seat, a fourth guide mechanism extending along the radial direction of the barrel section (2) is arranged on the machine head seat, the machine head (8) is slidably mounted on the fourth guide mechanism, and the vertical in-situ machining system further comprises a sixth linear driving device for driving the machine head (8) to displace along the fourth guide mechanism.
10. The vertical in-situ machining system for the thin-wall revolving body according to claim 1, further comprising a weld detecting device and an electric resistance welding device, wherein the weld detecting device and the electric resistance welding device are slidably arranged on the annular guide rail.
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| CN202010753387.3A CN111922728A (en) | 2020-07-30 | 2020-07-30 | Vertical in-situ machining system for thin-wall revolving body |
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| CN202010753387.3A CN111922728A (en) | 2020-07-30 | 2020-07-30 | Vertical in-situ machining system for thin-wall revolving body |
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