CN103464905B - Be applicable to the clamping device of longitudinal joint laser cutting and welding at the bottom of rocket case - Google Patents
Be applicable to the clamping device of longitudinal joint laser cutting and welding at the bottom of rocket case Download PDFInfo
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- CN103464905B CN103464905B CN201310415522.3A CN201310415522A CN103464905B CN 103464905 B CN103464905 B CN 103464905B CN 201310415522 A CN201310415522 A CN 201310415522A CN 103464905 B CN103464905 B CN 103464905B
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- 238000003698 laser cutting Methods 0.000 title claims abstract description 21
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Abstract
The invention discloses a kind of clamping device being applicable to longitudinal joint laser cutting and welding at the bottom of rocket case, comprise melon lobe and inhale tire group, vacuum generating device, vacuum hose, rotating disk, control system, key pressing plate group and base, wherein, described rotating disk is installed on base, described melon lobe inhales tire group and rotating disk is connected, described vacuum generating device is inhaled tire group by vacuum hose and melon lobe and is connected, described key pressing plate group is arranged on base, and described control system inhales tire group, vacuum generating device, rotating disk and the work of key pressing plate group for controlling melon lobe.The present invention has compact conformation, feature simple to operate, in automatic welding process at the bottom of case, can ensure that melon lobe is reliably fixed near the welding edge of longitudinal joint, accurately align, and avoid welding process to occur misalignment phenomenon.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a clamping device suitable for laser cutting and welding of a longitudinal seam of a rocket box bottom.
Background
The storage tank is the largest structural component in the rocket body structure of the carrier rocket, is used as a pressure vessel for storing liquid hydrogen/liquid oxygen propellant, and is also used as a main bearing structure of the rocket and plays a role in supporting a thermal protection system (namely a heat insulation protection layer) and providing installation foundation and space for other system instruments and equipment.
As shown in fig. 1 and fig. 2, the bottom of the ellipsoid at the two ends of the storage tank is called as the tank bottom, and the welding method is laser welding by adopting part tailor welding. The parts welded on the bottom of the box comprise a circular ring (6 melon petals), a top cover, a section frame, a flange and the like. The weld between the melon petals is called a longitudinal seam.
Because the melon lamella is the ellipsoid body, and the welding limit region is the curved surface, consequently the welding clamping is difficult. In the automatic welding process of the box bottom, the welding edges of the melon petals close to the longitudinal joint are required to be reliably fixed and accurately aligned, and the phenomena of misalignment and the like do not occur in the welding process.
In order to meet the development requirements of aerospace products, the invention provides a vacuum adsorption clamping device suitable for laser cutting and welding of a longitudinal seam of the bottom of a storage box of a carrier rocket. At present, no explanation or report of the similar technology of the invention is found, and similar data at home and abroad are not collected.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a clamping device suitable for laser cutting and welding of a longitudinal seam of the bottom of a rocket tank.
The invention is realized by the following technical scheme.
The utility model provides a clamping device suitable for rocket tank bottom longitudinal joint laser cutting and welding, includes that the melon lamella inhales child group, vacuum generator, vacuum hose, carousel, control system, key clamp plate group and base, wherein, the carousel is installed on the base, the melon lamella inhales child group and is connected with the carousel cooperation, vacuum generator inhales child group through vacuum hose and melon lamella and is connected, key clamp plate group installs on the base, control system is used for controlling the melon lamella and inhales child group, vacuum generator, carousel and key clamp plate group work.
Preferably, the child group is inhaled to melon lamella includes that many sets of melon lamella inhale the child, and wherein each set of melon lamella inhales child 1 and all includes: the tire suction device comprises a cast steel profile 9, a rectangular steel pipe 10, a bottom plate 11, a gas distribution block 12, a switching hose 13, a gas distribution pipe 14, a sliding block 15, a ball screw assembly 16 and a melon-petal tire suction servo motor 17, wherein the cast steel profile 9, the rectangular steel pipe 10 and the bottom plate 11 are welded in a splicing mode to form a melon-petal tire suction main body, the upper surface of the cast steel profile 9 is an ellipsoid curved surface and is consistent with the inner profile surface of the melon-petal, vacuumizing holes and sealing grooves are uniformly distributed in the cast steel profile 9, the vacuumizing holes are communicated with the vacuum hose through the gas distribution pipe 14, the switching hose 13 and the gas distribution block 12 in sequence, a high-temperature-resistant O-shaped sealing strip is arranged in each sealing groove to ensure the sealing performance during vacuumizing, a transmission mechanism composed of 4 sliding blocks 15, the ball screw assembly 16 and the melon-petal tire suction servo motor 17 is connected to the bottom plate 11 in a screwing mode, and each melon-petal tire suction tire 1 in the melon-, Slider 15 and carousel cooperation realize that the melon lamella inhales child 1 along the radial rectilinear movement of carousel 4.
Preferably, the gas distribution pipe 14 is formed by welding steel pipes.
Preferably, the vacuum generating device 2 comprises: the device comprises a vacuum pump, a silencer, an electromagnetic differential pressure vacuum valve, a high-vacuum diaphragm valve, a vacuum trap, a high-vacuum manual butterfly valve and a vacuum meter, wherein the vacuum pump is connected with the electromagnetic differential pressure vacuum valve, the electromagnetic differential pressure vacuum valve is connected with the vacuum trap, the vacuum trap is connected with the high-vacuum manual butterfly valve, the high-vacuum manual butterfly valve is connected with the vacuum meter, and the vacuum meter is connected with a melon petal sucking tire group through a vacuum hose; and a silencer is arranged on the vacuum pump, and a high-vacuum diaphragm valve is arranged between the electromagnetic differential pressure vacuum valve and the vacuum trap.
Preferably, the vacuum hose is a steel wire-wound vacuum tube.
Preferably, the melon petal suction tire group comprises 6 sets of melon petal suction tires 1, the turntable 4 adopts a steel plate splice welding structure, 6 sets of 12 linear guide rails 18 are connected onto the turntable in a threaded manner, and each set of melon petal suction tire 1 moves on the corresponding linear guide rail 18; carousel 4 drives 6 sets of melon lamella and inhales child 1 and do rotary motion around the axis of carousel 4 for change laser cutting, welded longitudinal joint position.
Preferably, musical instrument key clamp plate group includes 2 sets of key clamp plates 7, and two sets of key clamp plates 7 are the mirror image overall arrangement, and wherein, each set of key clamp plate 7 all includes: air inlet hose 19, gasbag 20, arc type mount pad 21 and a plurality of musical instrument key subassembly 22, arc type mount pad 21 adopts the steel sheet to splice and welds and form, gasbag 20 is arranged in the recess that sets up on arc type mount pad 21, musical instrument key subassembly 22 spiro union is on the lateral wall of arc type mount pad 21.
Preferably, each key assembly 22 comprises a hinge 23, a pin 24, a key 25 and a brass block 26, wherein the key 25 is connected with the hinge 23 through the pin 24, and the free end of the key 25 is provided with the brass block 26.
Preferably, the base 8 includes a chassis 27, a rotary support 28, a central column 29, a base servo motor 30, a gap bridge gear 31, a large torque motor 32, a first rotating shaft 33, a roll-over stand 34, a second rotating shaft 35, a pressing plate 36 and a cylinder 37, wherein the chassis 27 is formed by splicing and welding steel plates, the rotary support 28 is screwed on the chassis 27, the rotary support 28 is screwed with the turntable 4, the output torque of the base servo motor 30 is transferred to the rotary support 28 through the gap bridge gear 31 to drive the turntable 4 to rotate, the roll-over stand 34 is used for installing the key pressing plate group and overturns around the first rotating shaft 33 under the driving of the large torque motor 32, the lower end of the central column 29 formed by splicing and welding steel materials is screwed on the chassis 27, 6 sets of pressing plates 36 are installed at the upper end of the central column 29, the 6 sets of pressing plates 36 are used for pressing the end of the key pressing plate group and are driven by the cylinder 37, and is flipped about the second axis of rotation 35.
Preferably, the control system is controlled by a PLC.
Preferably, the control system comprises a touch screen 4, wherein the touch screen 4 provides a human-computer interaction interface, displays system operation data in real time, and sets parameters.
During operation, the back of the melon lamella is vacuumized, and the melon lamella is pressed tightly on the melon lamella suction mould by atmospheric pressure. The vacuum generating device provides continuous and stable air pressure difference, and the melon lamella suction tyre can firmly suck the melon lamella. The key pressing plate 7 adopts a pneumatic piano key type clamp to fix the area of the melon petal close to the welding line, and the clamping force is adjustable and uniform through the air pressure regulation of the air bag 20. The gas pressure of the bladder 20 is selected according to the process requirements of the weld. The clamp is divided into a left row and a right row, each row is composed of a plurality of key assemblies 22, each key assembly 22 can act independently, and the whole row of key assemblies 22 is in contact with a workpiece. When the air bag 20 on the key is inflated, the key assembly 22 generates a uniform clamping force to firmly clamp the workpiece, ensuring that the upper and lower surfaces (inner and outer surfaces) of the workpiece are in full contact with the surfaces of the key and the weld-leaking plate on the inner tube, respectively. The ends of the keys 25 are provided with brass cushion blocks 26, which are helpful for rapid heat dissipation of weldments in the welding process. The whole device is small and light, and visual barriers are not generated when butt welding pieces and welding electric arcs move, so that the visibility is improved, and the operation is convenient. The key structure of the present invention utilizes the principle of leverage, and when the air bag 20 is inflated, the key 25 is pressed to rotate around the hinge 23 and is pressed downwards, so that the brass pad 26 at the end of the key 25 presses the workpiece.
The clamping device suitable for laser cutting and welding of the longitudinal seam of the bottom of the rocket tank provided by the invention is compact in structure and simple to operate, and can ensure that the welding edges of the melon petals close to the longitudinal seam are reliably fixed and accurately aligned in the automatic welding process of the bottom of the rocket tank, and the phenomenon of misalignment in the welding process is avoided.
Drawings
FIG. 1 is a front view of the bottom of a carrier rocket tank;
FIG. 2 is a top view of the bottom of the carrier rocket tank;
FIG. 3 is a schematic view of the overall structure of the present invention;
FIG. 4 is a front view of the melon petal suckling tire;
FIG. 5 is a back view of the melon petal suckers;
FIG. 6 is a system block diagram of a vacuum generating device;
FIG. 7 is a schematic view of the construction of the turntable;
fig. 8 is a schematic view of the key presser;
FIG. 9 is a schematic view of the key assembly;
fig. 10 is an operation principle diagram of the key presser;
FIG. 11 is a schematic view of the base;
FIG. 12 is a flow chart of the present invention;
in the figure: 1 is a melon-petal sucking tire, 2 is a vacuum generating device, 3 is a vacuum hose, 4 is a rotary table, 5 is a touch screen, 6 is a control system, 7 is a key pressing plate, 8 is a base, 9 is a cast steel profile, 10 is a rectangular steel pipe, 11 is a bottom plate, 12 is a gas distribution block, 13 is a switching hose, 14 is a gas distribution pipe, 15 is a sliding block, 16 is a ball screw assembly, 17 is a melon-petal sucking tire servo motor, 18 is a linear guide rail, 19 is a gas inlet hose, 20 is a gas bag, 21 is an arc-shaped mounting seat, 22 is a key assembly, 23 is a hinge, 24 is a pin shaft, 25 is a key, 26 is a brass cushion block, 27 is a chassis, 28 is a rotary support, 29 is a central column, 30 is a base servo motor, 31 is a bridge gear, 32 is a high-torque motor, 33 is a first rotary shaft, 34 is a turnover frame, 35 is a second rotary shaft, 36 is a pressing plate, 37 is a cylinder, 38 is a vacuum hole, and 39 is, 101 is flange, 102 is top cover, 103 is ring (6 melon lamella welding), 104 is section bar frame, 105 is melon lamella, 106 is longitudinal joint, 107 is longitudinal joint welding position.
Detailed Description
The following examples illustrate the invention in detail: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
Please refer to fig. 3 to 12.
The embodiment provides a clamping device suitable for rocket tank bottom longitudinal joint laser cutting and welding, inhale child group, vacuum generator, vacuum hose, carousel, control system, key clamp plate group and base including the melon lamella, wherein, the carousel is installed on the base, the child group is inhaled with the carousel cooperation to the melon lamella and is connected, vacuum generator inhales child group through vacuum hose and melon lamella and is connected, key clamp plate group installs on the base, control system is used for controlling the melon lamella and inhales child group, vacuum generator, carousel and key clamp plate group work.
Further, the child group is inhaled to melon lamella includes that the child is inhaled to many sets of melon lamella, and wherein each set of melon lamella is inhaled child 1 and all includes: the tire suction device comprises a cast steel profile 9, a rectangular steel pipe 10, a bottom plate 11, a gas distribution block 12, a switching hose 13, a gas distribution pipe 14, a sliding block 15, a ball screw assembly 16 and a melon-petal tire suction servo motor 17, wherein the cast steel profile 9, the rectangular steel pipe 10 and the bottom plate 11 are welded in a splicing mode to form a melon-petal tire suction main body, the upper surface of the cast steel profile 9 is an ellipsoid curved surface and is consistent with the inner profile surface of the melon-petal, vacuumizing holes and sealing grooves are uniformly distributed in the cast steel profile 9, the vacuumizing holes are communicated with the vacuum hose through the gas distribution pipe 14, the switching hose 13 and the gas distribution block 12 in sequence, a high-temperature-resistant O-shaped sealing strip is arranged in each sealing groove to ensure the sealing performance during vacuumizing, a transmission mechanism composed of 4 sliding blocks 15, the ball screw assembly 16 and the melon-petal tire suction servo motor 17 is connected to the bottom plate 11 in a screwing mode, and each melon-petal tire suction tire 1 in the melon-, Slider 15 and carousel cooperation realize that the melon lamella inhales child 1 along the radial rectilinear movement of carousel 4.
Further, the gas distribution pipe 14 is formed by welding steel pipes.
Further, the vacuum generating device 2 comprises: the device comprises a vacuum pump, a silencer, an electromagnetic differential pressure vacuum valve, a high-vacuum diaphragm valve, a vacuum trap, a high-vacuum manual butterfly valve and a vacuum meter, wherein the vacuum pump is connected with the electromagnetic differential pressure vacuum valve, the electromagnetic differential pressure vacuum valve is connected with the vacuum trap, the vacuum trap is connected with the high-vacuum manual butterfly valve, the high-vacuum manual butterfly valve is connected with the vacuum meter, and the vacuum meter is connected with a melon petal sucking tire group through a vacuum hose; and a silencer is arranged on the vacuum pump, and a high-vacuum diaphragm valve is arranged between the electromagnetic differential pressure vacuum valve and the vacuum trap.
Further, the vacuum hose adopts a steel wire winding type vacuum pipe.
Further, the melon petal suction tire group comprises 6 sets of melon petal suction tires 1, the turntable 4 adopts a steel plate splice welding structure, 6 sets of 12 linear guide rails 18 are connected onto the turntable in a threaded manner, and each set of melon petal suction tire 1 moves on the corresponding linear guide rail 18; carousel 4 drives 6 sets of melon lamella and inhales child 1 and do rotary motion around the axis of carousel 4 for change laser cutting, welded longitudinal joint position.
Further, musical instrument key clamp plate group includes 2 sets of key clamp plates 7, and two sets of key clamp plates 7 are the mirror image overall arrangement, and wherein, each set of key clamp plate 7 all includes: air inlet hose 19, gasbag 20, arc type mount pad 21 and a plurality of musical instrument key subassembly 22, arc type mount pad 21 adopts the steel sheet to splice and welds and form, gasbag 20 is arranged in the recess that sets up on arc type mount pad 21, musical instrument key subassembly 22 spiro union is on the lateral wall of arc type mount pad 21.
Further, each key assembly 22 comprises a hinge 23, a pin 24, a key 25 and a brass pad 26, wherein the key 25 is connected with the hinge 23 through the pin 24, and the brass pad 26 is arranged at the end of the free end of the key 25.
Further, the base 8 comprises a chassis 27, a rotary support 28, a central column 29, a base servo motor 30, a gap bridge gear 31, a large torque motor 32, a first rotating shaft 33, a turning frame 34, a second rotating shaft 35, a pressing plate 36 and a cylinder 37, wherein the chassis 27 is formed by splicing and welding steel plates, the rotary support 28 is screwed on the chassis 27, the rotary support 28 is screwed with the turntable 4, the output torque of the base servo motor 30 is transferred to the rotary support 28 through the gap bridge gear 31 to drive the turntable 4 to rotate, the turning frame 34 is used for installing the piano key pressing plate set and overturns around the first rotating shaft 33 under the driving of the large torque motor 32, the lower end of the central column 29 formed by splicing and welding steel materials is screwed on the chassis 27, 6 sets of pressing plates 36 are installed at the upper end of the central column 29, the 6 sets of pressing plates 36 are used for pressing the end of the piano key pressing plate set and are driven by the cylinder 37, and is flipped about the second axis of rotation 35.
Further, the control system adopts a PLC for control.
Further, the control system comprises a touch screen 4, wherein the touch screen 4 provides a human-computer interaction interface, displays system operation data in real time, and sets parameters.
The method specifically comprises the following steps:
as shown in fig. 3, the present embodiment includes: the device comprises a melon petal suction tyre 1, a vacuum generating device 2, a vacuum hose 3, a rotary table 4, a touch screen 5, a control system 6, a key pressing plate 7, a base 8 and the like.
Wherein,
as shown in fig. 4 and 5, the melon-petal sucking tire 1 comprises: the pneumatic tire-sucking machine comprises a cast steel profile 9, a rectangular steel pipe 10, a bottom plate 11, a gas distribution block 12, a switching hose 13, a gas distribution pipe 14, a sliding block 15, a ball screw assembly 16 and a melon-petal tire-sucking servo motor 17, wherein the main body of the pneumatic tire-sucking machine is formed by welding the cast steel profile 9, the rectangular steel pipe 10 and the bottom plate 11 in a spliced mode. The upper surface of the cast steel molded surface 9 is an ellipsoid curved surface and is consistent with the inner molded surface of the melon petal. The profile is uniformly provided with a vacuumizing hole and a sealing groove, the vacuumizing hole is communicated with a vacuum pipeline through a gas distributing pipe 14 (formed by splicing and welding steel pipes), a switching hose 13, a gas distribution block 12 and the like, and a high-temperature-resistant O-shaped sealing strip is arranged in the sealing groove to ensure the sealing performance during vacuumizing. During operation, the back of the melon lamella is vacuumized and is pressed tightly on the melon lamella suction mould by atmospheric pressure. The base plate 11 of the melon lamella suction tyre is connected with 4 sliding blocks 15, a ball screw component 16, a melon lamella suction tyre servo motor 17 and other transmission mechanisms in a threaded mode, and the melon lamella suction tyre 1 can move along the radial straight line of the rotary table 4 through the transmission of the ball screw and the matching of the sliding blocks and the straight line guide rail on the rotary table.
As shown in fig. 6, the function of the vacuum generating device 2 is to provide a continuous and stable air pressure difference, so as to ensure that the melon flap absorbing tire can firmly absorb the melon flap. The vacuum generating device comprises: the device comprises a vacuum pump, a silencer, an electromagnetic differential pressure vacuum valve, a high-vacuum diaphragm valve, a vacuum trap, a high-vacuum manual butterfly valve, a vacuum meter, a control system and the like.
The vacuum hose 3 is used for connecting the vacuum generating device 2 and the air distribution block 12 of the melon segment suction tire 1, and a steel wire winding type vacuum tube is adopted.
As shown in fig. 7, the turntable 4 drives 6 sets of melon petal suction tires 1 to make a rotary motion around the central axis of the turntable 4, so as to replace the longitudinal seam positions of laser cutting and welding. The turntable 4 is in threaded connection with 6 groups of 12 linear guide rails 18, and the melon petal sucking tire 1 provided with the sliding block 15 can move on the linear guide rails 18. The turntable 4 adopts a steel plate tailor-welding structure.
The touch screen 4 provides a man-machine interface, displays system operating data in real time, and sets parameters.
The control system 5 is controlled by a PLC to control the operation of the motor and the cylinder of the whole set of device.
As shown in fig. 8, the key presser 7 has 2 sets, and has a mirror image layout, and mainly consists of an air inlet hose 19, an air bag 20, an arc-shaped mounting seat 21, a key assembly 22 (several pieces), and the like. The arc-shaped mounting seat 21 is formed by splicing and welding steel plates, the air bag 20 is arranged in the groove of the arc-shaped mounting seat, and the key assembly 22 is screwed on the side wall of the arc-shaped mounting seat. The key assembly 22 is schematically shown in fig. 9, and mainly comprises a hinge 23, a pin 24, a key 25, a brass spacer 26, and the like.
The key presser 7 works according to the following principle: in the embodiment, the pneumatic piano type clamp is adopted to fix the area of the melon petal close to the welding line, and the air pressure of the air bag 20 is adjusted to ensure that the clamping force is adjustable and uniform. The gas pressure of the bladder 20 is selected according to the process requirements of the weld. The clamp is divided into a left row and a right row, each row is composed of a plurality of key assemblies 22, each key assembly 22 can act independently, and the whole row of key assemblies 22 is in contact with a workpiece. The ends of the keys 25 are provided with brass cushion blocks 26, which are helpful for rapid heat dissipation of weldments in the welding process. The whole device is small and light, and visual barriers are not generated when butt welding pieces and welding electric arcs move, so that the visibility is improved, and the operation is convenient.
The key structure adopted in the longitudinal seam welding tool is shown in fig. 10, and mainly utilizes the lever principle, when the air bag 20 is inflated and expanded, the key 25 is pressed to rotate around the hinge 23 to be pressed, and then the brass cushion blocks 26 at the end parts of the key 25 are pressed on a workpiece.
As shown in fig. 11, the base 8 is composed of a chassis 27, a rotary support 28, a central column 29, a base servo motor 30, a bridge gear 31, a high torque motor 32, a first rotating shaft 33, a roll-over stand 34, a second rotating shaft 35, a pressing plate 36, a cylinder 37, and the like. The chassis 27 is formed by welding steel plates, a rotary support 28 is screwed on the chassis, the rotary support 28 is screwed with the turntable 4, and the output torque of the base servo motor 30 is transferred to the rotary support 28 through a bridge gear 31, so that the turntable 4 is driven to rotate. The roll-over stand 34 is used for mounting 2 sets of key pressboards 7 and can be driven by the large-torque motor 32 to roll over around the first rotating shaft 33. The lower end of a central column 29 which is formed by welding steel materials is screwed on the chassis 27, and the upper end is provided with 6 sets of pressing plates 36. The pressing plate 36 is used for pressing the end of the 2 sets of key pressing plates to turn around the second rotating shaft 35 under the driving of the air cylinder 37.
The work flow chart of the embodiment is shown in fig. 12.
In this embodiment, the last profile that child was inhaled to melon lamella is the ellipsoid curved surface, is unanimous with melon lamella inner profile. The profile is uniformly provided with a vacuumizing hole and a sealing groove, the vacuumizing hole is connected with a vacuum pipeline, and a high-temperature-resistant O-shaped sealing strip is arranged in the sealing groove, so that the sealing performance during vacuumizing is ensured. During operation, the back of the melon lamella is vacuumized and is pressed tightly on the melon lamella suction mould by atmospheric pressure. Transmission mechanisms such as a sliding block, a servo motor and a ball screw are installed at the bottom of the melon-petal sucking tire, and through the cooperation of the ball screw transmission and the sliding block with a linear guide rail on the turntable, the melon-petal sucking tire can move linearly along the radial direction of the turntable. The function of the vacuum generating device is to provide continuous and stable air pressure difference, so that the melon lamella suction tyre can firmly suck the melon lamella. The vacuum generating device comprises the following components: the device comprises a vacuum pump, a silencer, an electromagnetic differential pressure vacuum valve, a high-vacuum diaphragm valve, a vacuum trap, a high-vacuum manual butterfly valve, a vacuum meter, a control system and the like. The vacuum hose is used for connecting the vacuum generating device and the vacuumizing hole of the melon petal sucking tire, and a steel wire winding type vacuum tube is adopted. The carousel drives 6 sets of melon lamella and inhales child and revolutes the axis of carousel and do rotary motion for change laser cutting, welded longitudinal joint position. The carousel is last to install 6 groups linear guide, and the child is inhaled to the melon lamella that is equipped with the slider can move on linear guide. The turntable is of a steel plate tailor-welding structure. The touch screen provides a human-computer interaction interface, displays system operation data in real time and sets parameters. The control system is controlled by a PLC (programmable logic controller) and controls a motor and a cylinder of the whole device to work. The key clamp plate is used for compressing tightly the welding limit of melon lamella when the welding, the welding of being convenient for. The base is provided with a rotary support and a servo motor and is used for driving the components above the whole set of turntable to rotate. Meanwhile, the base is provided with the turnover mechanism and the pressing mechanism of the key pressing plate, so that the workpiece is convenient to mount and dismount.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (8)
1. The clamping device is characterized by comprising a melon petal suction tire group, a vacuum generating device, a vacuum hose, a rotary disc, a control system, a key pressing plate group and a base, wherein the rotary disc is installed on the base, the melon petal suction tire group is connected with the rotary disc in a matched mode, the vacuum generating device is connected with the melon petal suction tire group through the vacuum hose, the key pressing plate group is installed on the base, and the control system is used for controlling the melon petal suction tire group, the vacuum generating device, the rotary disc and the key pressing plate group to work;
musical instrument key clamp plate group includes 2 sets of key clamp plates, and 2 sets of key clamp plates are the mirror image overall arrangement, and wherein, each set of key clamp plate all includes: the air inlet hose, the air bag, the arc-shaped mounting seat and the plurality of piano key assemblies are arranged on the side wall of the arc-shaped mounting seat in a screwed mode, the arc-shaped mounting seat is formed by welding steel plates in a spliced mode, the air bag is arranged in a groove formed in the arc-shaped mounting seat, and the piano key assemblies are arranged on the side wall of the arc-shaped mounting seat in a screwed mode.
2. The clamping device suitable for rocket tank bottom longitudinal joint laser cutting and welding of claim 1, wherein said melon flap suction tire group comprises a plurality of sets of melon flap suction tires, wherein each set of melon flap suction tire comprises: a cast steel profile, a rectangular steel pipe, a bottom plate, a gas distribution block, a switching hose, a gas distribution pipe, a slide block, a ball screw assembly and a melon petal tire suction servo motor, wherein the cast steel molded surface, the rectangular steel pipe and the bottom plate are welded in a splicing manner to form a melon petal tire suction main body, the upper surface of the cast steel molded surface is an ellipsoid curved surface, and is consistent with the inner profile of the melon petal, the cast steel profile is evenly provided with a vacuum hole and a sealing groove, the vacuum pumping hole is communicated with the vacuum hose through the gas distributing pipe, the switching hose and the gas distributing block in sequence, a high-temperature resistant O-shaped sealing strip is arranged in the sealing groove to ensure the sealing performance during vacuum pumping, a transmission mechanism consisting of 4 sliding blocks, a ball screw assembly and a melon-petal tire suction servo motor is screwed on the bottom plate, each melon-petal suction tire in the melon-petal suction tire group is matched with the rotary table through a respective ball screw assembly and a sliding block, so that the melon-petal suction tire can linearly move along the radial direction of the rotary table;
the gas distribution pipe is formed by welding steel pipes.
3. The clamping device suitable for rocket tank bottom longitudinal seam laser cutting and welding as claimed in claim 1, wherein said vacuum generating device comprises: the device comprises a vacuum pump, a silencer, an electromagnetic differential pressure vacuum valve, a high-vacuum diaphragm valve, a vacuum trap, a high-vacuum manual butterfly valve and a vacuum meter, wherein the vacuum pump is connected with the electromagnetic differential pressure vacuum valve, the electromagnetic differential pressure vacuum valve is connected with the vacuum trap, the vacuum trap is connected with the high-vacuum manual butterfly valve, the high-vacuum manual butterfly valve is connected with the vacuum meter, and the vacuum meter is connected with a melon petal sucking tire group through a vacuum hose; a silencer is arranged on the vacuum pump, and a high-vacuum diaphragm valve is arranged between the electromagnetic differential pressure vacuum valve and the vacuum trap;
the vacuum hose adopts a steel wire winding type vacuum tube.
4. The clamping device suitable for rocket tank bottom longitudinal joint laser cutting and welding as claimed in claim 1, wherein said melon petal suction tire set comprises 6 sets of melon petal suction tires, said turntable adopts steel plate welding structure, it has 12 linear guide rails in total of 6 sets screwed thereon, each set of melon petal suction tire moves on the corresponding linear guide rail; the carousel drives 6 sets of melon lamella and inhales child and revolutes the axis of carousel and do rotary motion for change laser cutting, welded longitudinal joint position.
5. The clamping device suitable for laser cutting and welding of the longitudinal seam of the bottom of the rocket tank as claimed in claim 1, wherein each key assembly comprises a hinge, a pin shaft, a key and a brass cushion block, wherein the key is connected with the hinge shaft through the pin shaft, and the brass cushion block is arranged at the end part of the free end of the key.
6. The clamping device suitable for laser cutting and welding of the longitudinal seam of the bottom of a rocket box as claimed in claim 1, wherein the base comprises a chassis, a rotary support, a central column, a base servo motor, a gap bridge gear, a high-torque motor, a first rotating shaft, a turning frame, a second rotating shaft, a pressing plate and a cylinder, wherein the chassis is formed by splicing and welding steel plates, the rotary support is screwed on the chassis, the rotary support is screwed with a turntable, the output torque of the base servo motor is transmitted to the rotary support through the gap bridge gear so as to drive the turntable to rotate, the turning frame is used for installing a piano key pressing plate group and is turned around the first rotating shaft under the driving of the high-torque motor, the lower end of the central column which is formed by splicing and welding steel is screwed on the chassis, the upper end of the central column is provided with 6 pressing plates, and the 6 pressing plates are used for pressing the end of the piano pressing, and is driven by the cylinder to turn around the second rotating shaft.
7. The clamping device suitable for rocket box bottom longitudinal seam laser cutting and welding as claimed in claim 1, wherein said control system is controlled by PLC.
8. The clamping device suitable for rocket tank bottom longitudinal seam laser cutting and welding as claimed in claim 7, wherein said control system comprises a touch screen, said touch screen provides a human-computer interaction interface, displays system operation data in real time, and sets parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310415522.3A CN103464905B (en) | 2013-09-12 | 2013-09-12 | Be applicable to the clamping device of longitudinal joint laser cutting and welding at the bottom of rocket case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310415522.3A CN103464905B (en) | 2013-09-12 | 2013-09-12 | Be applicable to the clamping device of longitudinal joint laser cutting and welding at the bottom of rocket case |
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| Publication Number | Publication Date |
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| CN103464905A CN103464905A (en) | 2013-12-25 |
| CN103464905B true CN103464905B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310415522.3A Expired - Fee Related CN103464905B (en) | 2013-09-12 | 2013-09-12 | Be applicable to the clamping device of longitudinal joint laser cutting and welding at the bottom of rocket case |
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| CN103862215B (en) * | 2014-03-26 | 2016-02-03 | 南京工程学院 | The tailor-welding tool device and method that the large-scale curved end socket of a kind of pressure vessel is general |
| CN104384946A (en) * | 2014-09-11 | 2015-03-04 | 上海航天精密机械研究所 | Clamping device suitable for milling wall plate of storage box of carrier rocket |
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| CN110465820A (en) * | 2019-09-17 | 2019-11-19 | 成都飞机工业（集团）有限责任公司 | A kind of clamping method and fixture deforming workpiece |
| CN111922733A (en) * | 2020-07-31 | 2020-11-13 | 天津航天长征火箭制造有限公司 | Flexible tailor-welding tool and tailor-welding method for bottom of ellipsoidal box |
| CN114952101B (en) * | 2022-06-09 | 2024-02-20 | 宜兴华威封头有限公司 | Sectional machining device and method for spherical seal heads |
| CN115889826B (en) * | 2023-01-30 | 2023-08-04 | 蓝箭航天空间科技股份有限公司 | Rocket storage tank ellipsoidal bottom ring shape processing method |
| CN117733315B (en) * | 2024-02-19 | 2024-05-31 | 中国航空制造技术研究院 | Friction stir welding equipment for milling and welding composite rocket tank bottom |
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| CN103464905A (en) | 2013-12-25 |
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