CN114737045A - Welding bead residual stress relieving device and method - Google Patents
Welding bead residual stress relieving device and method Download PDFInfo
- Publication number
- CN114737045A CN114737045A CN202210370425.6A CN202210370425A CN114737045A CN 114737045 A CN114737045 A CN 114737045A CN 202210370425 A CN202210370425 A CN 202210370425A CN 114737045 A CN114737045 A CN 114737045A
- Authority
- CN
- China
- Prior art keywords
- base
- weldment
- residual stress
- roller
- mounting groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011324 bead Substances 0.000 title claims abstract description 47
- 238000003466 welding Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000008093 supporting effect Effects 0.000 claims abstract description 50
- 230000000694 effects Effects 0.000 claims description 10
- 230000008030 elimination Effects 0.000 claims description 5
- 238000003379 elimination reaction Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 15
- 230000008569 process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004021 metal welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention belongs to the technical field of weld bead residual stress relief, and particularly relates to a weld bead residual stress relief device and a method, wherein the residual stress relief device comprises a base, a telescopic rod, a bearing rotating shaft and an ultrasonic device, wherein the left side of the inside of the base is provided with a mounting groove, the upper left side of the mounting groove in the base is rotatably connected with a first roller, the lower left side of the mounting groove in the base is rotatably connected with a second roller, and a groove in the base is rotatably connected with an electromagnet; according to the invention, the welding piece is pushed to move upwards and abut against the upper side of the mounting groove by the second roller under the action of the supporting spring, so that the base is not easy to swing up and down, and when the welding piece is large, the second roller rotates, so that the base can move along the edge of the welding piece to eliminate residual stress at other positions, and the problem that when an ultrasonic device in the prior art needs to be transferred, the magnetic base needs to be powered off and demagnetized firstly, and then the ultrasonic device can be carried and transferred manually, so that the working efficiency is low is avoided.
Description
Technical Field
The invention belongs to the technical field of residual stress relief of welding beads, and particularly relates to a device and a method for relieving residual stress of a welding bead.
Background
In the welding process, because a temperature gradient is generated by a welding part, the structure and the performance of a joint are not uniform, stress and strain can be generated in the welding part, the welding stress remained in the welding part after welding is the welding residual stress which is the stress existing when no external load acts, and the welding bead residual stress is the defect which is almost inevitable in the welding technology, in order to avoid the influence of the residual stress on the safe operation of a structure, the welding residual stress needs to be eliminated, the plasticity and the toughness of the welding joint are improved, so that the structural performance of the welding part is improved, the welding bead residual stress is well eliminated by ultrasonic waves in the prior art, the basic principle is that a high-power ultrasonic wave is utilized to push an impact tool to impact the surface of a metal object at a frequency of more than twenty thousand times per second, and the high frequency, high efficiency and large energy under focusing of the ultrasonic wave can generate large compression plastic deformation on the surface of the metal, meanwhile, the ultrasonic welding stress relief equipment wave changes the original stress field, generates a certain numerical value of compressive stress, strengthens the impacted part, obviously improves the fatigue strength of the metal welding joint and the structure, and greatly prolongs the fatigue life of the metal welding joint and the structure.
The device comprises a magnetic base, a mechanical arm and an ultrasonic impact head, wherein the ultrasonic impact head is hinged and installed at a first end of the mechanical arm, a second end of the mechanical arm is hinged and installed on the magnetic base, the axis of the ultrasonic impact head is perpendicular to the hinging shaft of the ultrasonic impact head and the mechanical arm, the magnetic base is fixed near a workpiece to be repaired, then the positions of the mechanical arm and the ultrasonic impact head are adjusted to enable the head of the ultrasonic impact head to be aligned with the surface of a weld bead of the workpiece, then the mechanical arm and the ultrasonic impact head are fixed to keep the posture, the ultrasonic impact head is opened to eliminate the residual stress of the weld bead, compared with the traditional operation, the device does not need two hands to operate and has smaller labor intensity, the residual stress elimination effect is improved, although the fixing to the ultrasonic device is realized to above-mentioned patent, the unstable condition of hand shake appears when having avoided artifical handheld residual stress to cause the elimination, and the artifical intensity of labour has been reduced, but partial defect still exists, when welding a size is great, the ultrasonic device need change the position and eliminate welding track residual stress, but above-mentioned patent adsorbs on welding a piece through magnetic force seat, need just can shift with magnetic force seat outage demagnetization earlier during the transfer, lead to excessively loaded down with trivial details in the transfer process, the production efficiency has been reduced, and on magnetic force seat can only adapt to some smooth platforms, lead to equipment accommodation less.
In view of the above, the present invention provides a device and a method for eliminating residual stress of a weld bead to solve the above technical problems.
Disclosure of Invention
The invention provides a device and a method for eliminating welding bead residual stress, aiming at overcoming the defects of the prior art and solving the problems that the prior device is adsorbed on a welding part through a magnetic seat, the magnetic seat needs to be powered off and demagnetized before being transferred, so that the transfer process is complicated, the production efficiency is reduced, and the magnetic seat can only adapt to flat platforms, so that the adaptation range is small.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method of eliminating weld bead residual stress, said method comprising the steps of:
s1: after the weldment is welded, the weldment is placed on a manufacturing platform, the base is inserted into the weldment through the oblique angles on the left sides of the first roller and the second roller, then the weldment is pushed to move upwards to abut against the upper surface of the mounting groove under the supporting action of the second roller on the lower side, the base is preliminarily clamped on the weldment, and the base is prevented from swinging up and down;
s2: the electromagnet is electrified and attracts the weldment to enable the supporting plate to be in close contact with the weldment further, the stability of the base on the weldment is improved, the base is prevented from moving back and forth, then the telescopic rod is adjusted and passes through the bearing rotating shaft at the upper end of the telescopic rod to enable the front end of the ultrasonic device to be in contact with a weld bead on the inner side of the weldment, then the telescopic rod and the bearing rotating shaft are fixed through the bolt, the ultrasonic device is fixed, and residual stress is eliminated through electrified operation;
s3: the driving motor in the second roller wheel is started to operate, and the base can move along the weldment under the assistance of the balls and the first roller wheel, so that residual stress on different positions on the weldment with larger size can be eliminated;
s4: when unsuitable base is pressed from both sides tightly on the weldment, can place the base on work platform, then rotate the electro-magnet, make supporting wheel and platform contact, the electro-magnet passes through wire rope and drives the bevel gear rotation simultaneously, thereby drive the drive shaft and rotate, make the second gyro wheel rotate downwards and the platform contact, the electro-magnet drives the supporting wheel simultaneously, and keep on same straight line with the lower extreme of second gyro wheel under the rubber layer effect, then remove through second gyro wheel and supporting wheel, the realization can drive ultrasonic device and remove the completion welding bead residual stress on the weldment.
A welding bead residual stress relieving device is suitable for the welding bead residual stress relieving method and comprises a base, a telescopic rod, a bearing rotating shaft and an ultrasonic device, wherein the lower end of the telescopic rod is rotatably connected to the middle position of the upper end of the base through a bolt, the inner part of the upper end of the telescopic rod is fixedly connected with the outer side of the bearing rotating shaft, the outer side of the ultrasonic device is fixedly connected with the inner side of the bearing rotating shaft, a mounting groove is formed in the left side of the inner part of the base, a first roller is rotatably connected to the upper left side of the mounting groove in the base, an outer side frame of the first roller is slidably connected with the upper part of the base, a return spring is fixedly connected to the upper end of the outer side frame of the first roller, supporting plates are fixedly connected to the upper side and the lower side of the inner part of the mounting groove and are fixedly connected to the right side of the first roller, and balls are rotatably connected to the left side of the inner part of the supporting plates, the utility model discloses a set up the support device, including base, ball, annular spread groove, supporting spring, mounting groove, support spring, drive shaft, annular spread groove, the ball is along the surface evenly distributed of backup pad, the inside mounting groove left side below of base is rotated and is connected with the second gyro wheel, the outside frame lower extreme fixedly connected with drive shaft of second gyro wheel, the both ends of drive shaft are connected with the inside rotation of base, annular spread groove has been seted up at the both ends of drive shaft, the inboard sliding connection of spread groove has supporting spring, supporting spring's hardness is greater than reset spring's hardness, the outside of second gyro wheel is provided with driving motor, the right side of base is seted up flutedly, the swivelling joint has the electro-magnet in the inside recess of base.
When the welding device works, firstly, a weldment waiting for eliminating the residual stress of a welding bead is placed on a working platform, the surface of the weldment is cleaned, then one side of the weldment is inserted into the inner side of a base, the weldment pushes a first roller to move upwards and a second roller to move downwards, then the base is preliminarily clamped on the weldment under the action of a return spring and a supporting spring, the return spring is more easily compressed because the hardness of the supporting spring is greater than that of the return spring, so that the second roller pushes the weldment to move upwards and to abut against the upper side of a mounting groove under the action of the supporting spring, meanwhile, the right end of the weldment abuts against a ball, the base is not easy to swing up and down, then an electromagnet is electrified, so that the electromagnet attracts the weldment to be in close contact with the ball through a gap between supporting plates, and the base is not easy to slide back and forth under the action of friction force between the first roller and the second roller, then, the telescopic rod is adjusted, the front end impact head of the ultrasonic device is in contact with the weld bead by utilizing the bearing rotating shaft, then the ultrasonic device is started to impact the weld bead, so that the internal residual stress is eliminated, when the weldment is large, the driving motor is started to drive the second roller to rotate, the friction force between the weldment and the supporting plate can be reduced by the balls, the base can move along the edge of the weldment, meanwhile, the electromagnet always attracts the edge of the weldment to be attached to the balls, so that a guiding effect is provided for the movement of the base, no deviation occurs when the base moves, then the residual stress is eliminated at other positions of the weldment by the ultrasonic device, the situation that the ultrasonic device is easy to shake when being manually held is avoided, and the situation that when the ultrasonic device in the prior art needs to be transferred, the magnetic base must be powered off and demagnetized firstly is avoided, then the manual work just can carry and shift, causes work efficiency lower to and need reposition calibration after the transport, guarantee that the front end of supersound device strikes the head and contacts with the welding bead, increased artificial intensity of labour.
Preferably, the left sides of the first roller and the second roller are provided with 25-70-degree oblique angles.
The during operation, when the weldment edge inserts the inboard of base, because the left side of first gyro wheel and second gyro wheel all is provided with 25 ~ 70 degrees oblique angles, so when installing the base on the weldment edge, the resistance is littleer when the weldment inserts, the installation effectiveness of base has been improved, and caused the damage to first gyro wheel and second gyro wheel because the plug-in velocity is very fast when having avoided the weldment to insert, thereby the impact force that produces when having reduced the weldment and inserting through the oblique angle, the internal element of base has been protected.
Preferably, a rubber layer is arranged on the right side of the electromagnet, an adjusting groove is formed in the inner side of the rubber layer, and a supporting wheel is rotatably connected inside the adjusting groove.
When the welding device works, when the edge of the welding piece is not suitable for clamping, the electromagnet can be rotated to drive the supporting wheel to be contacted with the working platform, then the electromagnet is electrified to generate attraction force on the working platform, so that the base is adsorbed on the working platform, meanwhile, after the electromagnet is rotated and opened, the contact area between the base and the working platform can be increased, thereby improving the stability of the base, and simultaneously when the electromagnet is electrified to generate attraction force on the working platform, under the action of the rubber layer on the right side of the electromagnet and the adjusting groove, the supporting wheel can extrude the rubber layers at different positions, then different deformations appear and adapt to the work platform of unevenness, guarantee simultaneously that the lower extreme of part supporting wheel can keep on same straight line with the lower extreme of left second gyro wheel, make things convenient for the follow-up removal of base to carry out residual stress elimination to different positions on the welding track to the accommodation of equipment has been improved.
Preferably, the lower right corner of base is provided with the lug, the downside edge on electro-magnet right side rubber layer can with the right-hand member lateral wall laminating of lug when rotating.
During operation, when the electromagnet rotates, the rubber layer at the lower end of the electromagnet and the lug at the lower right corner of the base generate extrusion force, so that the rubber layer of the electromagnet can be in close contact with the lug, the stability of the electromagnet is improved, the electromagnet cannot easily rotate, and meanwhile, the lug can provide guiding effect when the electromagnet rotates, so that the supporting wheel can be kept on the same straight line with the lower end of the first roller.
Preferably, the lower parts of the front side and the rear side of the electromagnet are fixedly connected with steel wire ropes which are symmetrically arranged, the left ends of the two steel wire ropes are rotatably connected with bevel gears below the mounting groove on the left side of the base 1, and the outer sides of the two bevel gears are meshed with the right ends of the corresponding driving shafts.
The during operation, the electro-magnet can drive bevel gear through wire rope when rotating and rotate, because bevel gear's the outside is connected with the right-hand member meshing of drive shaft, so bevel gear can drive the drive shaft and rotate, thereby the drive shaft drives the second gyro wheel and rotates downwards and the work platform contact, rotate through bevel gear and be connected, drive shaft pivoted stability can be guaranteed, the condition that the skew appears in the second gyro wheel has been caused to long-term artifical rotation back, the bottom that leads to the second gyro wheel can't be in same straight line with the supporting wheel, the maintenance cost of follow-up drive shaft has been increased, the big elasticity of wire rope rigidity is little simultaneously, can avoid bevel gear appearance self-rotation's condition.
The invention has the following beneficial effects:
1. according to the device and the method for eliminating the residual stress of the weld bead, the hardness of the supporting spring is greater than that of the return spring, so that the return spring is more easily compressed, the second roller pushes the weldment to move upwards under the action of the supporting spring and abuts against the upper side of the mounting groove, the base is not easy to swing up and down, then the ultrasonic device impacts the weld bead to eliminate the internal residual stress, when the weldment is large, the driving motor drives the second roller to rotate, so that the base can eliminate the residual stress of other positions by moving the ball along the edge of the weldment, and the problem that the device can be transported and transferred after the magnetic base is powered off and demagnetized in the prior art is avoided.
2. According to the device and the method for eliminating the residual stress of the weld bead, when the edge of a weldment is not suitable for clamping, the electromagnet is electrified to generate attraction force on the working platform, so that the base is adsorbed on the working platform, meanwhile, the electromagnet increases the contact area between the base and the working platform, the stability of the base is improved, meanwhile, under the action of the rubber layer on the right side of the electromagnet and the adjusting groove, the supporting wheel can extrude the rubber layer to generate different deformations to adapt to the uneven working platform, the lower end of part of the supporting wheel can be kept on the same straight line with the lower end of the second roller on the left side, and the base can move to eliminate the residual stress on different positions on the weld bead conveniently.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a method of bead residual stress relief according to the present invention;
FIG. 2 is a perspective view of the structure of the present invention;
FIG. 3 is a schematic side view of the inventive structure;
FIG. 4 is a schematic front view of the structure of the present invention;
FIG. 5 is a sectional view taken along line A-A of FIG. 4;
fig. 6 is a partially enlarged view at B in fig. 5.
In the figure: 1. a base; 11. mounting grooves; 2. a telescopic rod; 21. a bearing shaft; 3. an ultrasonic device; 4. a first roller; 41. a return spring; 5. a support plate; 51. a ball bearing; 6. a second roller; 61. a drive shaft; 62. connecting grooves; 63. a support spring; 64. a drive motor; 7. an electromagnet; 71. an adjustment groove; 72. a support wheel; 73. a wire rope; 74. a bevel gear.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, a bead residual stress eliminating method includes the steps of:
s1: after the weldment is welded, the weldment is placed on a manufacturing platform, the base 1 is inserted into the weldment through the oblique angles on the left sides of the first roller 4 and the second roller 6, then the weldment is pushed to move upwards to abut against the upper surface of the mounting groove 11 under the supporting action of the second roller 6 on the lower side, the base 1 is preliminarily clamped on the weldment, and the base 1 is prevented from swinging up and down;
s2: the electromagnet 7 is electrified and attracts the weldment to enable the supporting plate 5 to be in close contact with the weldment further, the stability of the base 1 on the weldment is improved, the base 1 is prevented from moving back and forth, then the telescopic rod 2 is adjusted and the front end of the ultrasonic device 3 is enabled to be in contact with a weld bead on the inner side of the weldment through the bearing rotating shaft 21 at the upper end of the telescopic rod 2, then the telescopic rod 2 and the bearing rotating shaft 21 are fixed through bolts, the ultrasonic device 3 is fixed, and residual stress is eliminated through electrified operation;
s3: the driving motor 64 in the second roller 6 is started to operate, and the base 1 can move along the weldment under the assistance of the balls 51 and the first roller 4, so that residual stress on different positions on the weldment with larger size can be eliminated;
s4: when the unsuitable base 1 on the weldment is clamped tightly, the base 1 can be placed on a working platform, then the electromagnet 7 is rotated, the supporting wheel 71 is in contact with the platform, meanwhile, the electromagnet 7 drives the bevel gear 74 to rotate through the steel wire rope 73, the driving shaft 61 is driven to rotate, the second roller 6 is driven to rotate downwards to be in contact with the platform, meanwhile, the electromagnet 7 drives the supporting wheel 72, the lower end of the second roller 6 is kept on the same straight line under the action of the rubber layer, then the ultrasonic device 3 can be driven to move, and the residual stress of the welding bead on the weldment can be eliminated.
A welding bead residual stress relieving device is suitable for the welding bead residual stress relieving method in claim 1, the residual stress relieving device comprises a base 1, an expansion link 2, a bearing rotating shaft 21 and an ultrasonic device 3, the lower end of the expansion link 2 is rotatably connected to the middle position of the upper end of the base 1 through a bolt, the inner part of the upper end of the expansion link 2 is fixedly connected with the outer side of the bearing rotating shaft 21, the outer side of the ultrasonic device 3 is fixedly connected with the inner side of the bearing rotating shaft 21, a mounting groove 11 is formed in the left side of the inner part of the base 1, a first roller 4 is rotatably connected to the upper left side of the mounting groove 11 in the base 1, the outer side frame of the first roller 4 is slidably connected with the upper part of the base 1, a return spring 41 is fixedly connected to the upper end of the outer side frame of the first roller 4, a support plate 5 is fixedly connected to the upper and lower sides of the inner part of the mounting groove 11 and the right side of the first roller 4, the inside left side of backup pad 5 is rotated and is connected with ball 51, ball 51 is along backup pad 5's surface evenly distributed, the inside mounting groove 11 left side below of base 1 is rotated and is connected with second gyro wheel 6, the outside frame lower extreme fixedly connected with drive shaft 61 of second gyro wheel 6, the both ends of drive shaft 61 are connected with the inside rotation of base 1, annular connecting groove 62 has been seted up at the both ends of drive shaft 61, the inboard sliding connection of connecting groove 62 has supporting spring 63, supporting spring 63's hardness is greater than reset spring 41's hardness, the outside of second gyro wheel 6 is provided with driving motor 64, the right side of base 1 is seted up flutedly, it has electro-magnet 7 to rotate in the inside recess of base 1.
When the welding device works, firstly, a weldment waiting for eliminating the residual stress of a welding bead is placed on a working platform, the surface of the weldment is wiped clean, then one side of the weldment is inserted into the inner side of the base 1, so that the weldment pushes the first roller 4 to move upwards and the second roller 6 to move downwards, then the base 1 is preliminarily clamped on the weldment under the action of the return spring 41 and the supporting spring 63, because the hardness of the supporting spring 63 is greater than that of the return spring 41, the return spring 41 is more easily compressed, so that the second roller 6 pushes the weldment to move upwards and abut against the upper side of the mounting groove 11 under the action of the supporting spring 63, meanwhile, the right end of the weldment abuts against the ball 51, so that the base 1 is not easy to swing upwards and downwards, then the electromagnet 7 is electrified, so that the electromagnet 7 attracts the weldment to be in close contact with the ball 51 through a gap between the supporting plates 5 and is under the action of friction between the first roller 4 and the second roller 6, so that the base 1 is not easy to slide back and forth, then the telescopic rod 2 is adjusted, the front end impact head of the ultrasonic device 3 is contacted with a weld bead by utilizing the bearing rotating shaft 21, then the ultrasonic device 3 is started to impact the weld bead, thereby eliminating the internal residual stress, when the weldment is large, the driving motor 64 is started, so that the driving motor 64 drives the second roller 6 to rotate, and the ball 51 can reduce the friction force between the weldment and the supporting plate 5, so that the weldment can move along the groove in the base 1, meanwhile, the electromagnet 7 always attracts the edge of the weldment to be attached to the ball 51, thereby providing a guiding effect for the movement of the base 1, so that the deviation can not occur when the base 1 moves, then the ultrasonic device 3 eliminates the residual stress of other positions of the weldment, and the condition that the ultrasonic device 3 is easy to shake when being manually held is avoided, and avoid appearing when current ultrasonic device 3 need shift, must carry out the outage demagnetization to magnetic force seat earlier, then personnel just can carry and shift and cause work efficiency lower to and need the reposition calibration after the transport, increased artificial intensity of labour's the condition.
As an embodiment of the invention, the left sides of the first roller 4 and the second roller 6 are provided with an oblique angle of 25-70 degrees.
The during operation, when weldment edge inserts base 1's inboard, because first gyro wheel 4 all is provided with 25 ~ 70 degrees bevels with the left side of second gyro wheel 6, so when installing base 1 on weldment edge, the resistance is littleer when the weldment inserts, base 1's installation effectiveness has been improved, and avoided when the weldment inserts because the plug-in velocity is very fast and cause the damage to first gyro wheel 4 and second gyro wheel 6, thereby reduce the impact force that produces when the weldment inserts through the bevel, base 1's internal component has been protected.
In one embodiment of the present invention, a rubber layer is disposed on the right side of the electromagnet 7, an adjusting groove 71 is disposed on the inner side of the rubber layer, and a support wheel 72 is rotatably connected to the inside of the adjusting groove 71.
When the welding part edge is not suitable for clamping, the electromagnet 7 can be rotated at the moment, so that the electromagnet 7 drives the supporting wheel 72 to be in contact with the working platform, then the electromagnet 7 is electrified to generate attraction force on the working platform, the base 1 is adsorbed on the working platform, meanwhile, after the electromagnet 72 is rotated and opened, the contact area between the base 1 and the working platform can be increased, the random movement and the front and back shaking of the base 1 are prevented, when the electromagnet 7 is electrified to generate attraction force on the working platform, under the action of the rubber layer on the right side of the electromagnet 7 and the adjusting groove 71, the supporting wheel 72 can extrude the rubber layers at different positions, then different deformations are generated to adapt to the uneven working platform, meanwhile, the lower end of part of the supporting wheel 72 can be kept on the same straight line with the lower end of the second roller 6 on the left side, and the residual stress on different positions on the welding track can be conveniently eliminated by the movement of the base 1, thereby improving the adaptation range of the device.
As an embodiment of the present invention, a protrusion is disposed at a lower right corner of the base 1, and when the lower side edge of the right rubber layer of the electromagnet 7 rotates, the lower side edge can be attached to a right side wall of the protrusion.
During operation, when rotating electromagnet 7, the rubber layer of electromagnet 7 lower extreme and the lug in the 1 lower right corner of base produce the extrusion force for electromagnet 7's rubber layer can with lug in close contact with, thereby improved electromagnet 7's stability, make electromagnet 7 can not appear rotating easily, 7 rotates back and the lug laminating of electromagnet simultaneously, the lug plays the spacing effect of direction to electromagnet 7.
In one embodiment of the present invention, the wire ropes 73 are fixedly connected to the lower portions of the front and rear sides of the electromagnet 7, the wire ropes 73 are symmetrically arranged, the left ends of the two wire ropes 73 are rotatably connected to bevel gears 74 below the left side mounting grooves 11 of the base 1, and the outer sides of the two bevel gears 74 are engaged with the right ends of the corresponding driving shafts 71.
During operation, the electro-magnet 7 can drive bevel gear 74 through wire rope 73 during the rotation and rotate, because bevel gear 74's the outside is connected with the right-hand member meshing of drive shaft 71, so bevel gear 74 can drive shaft 61 and rotate, and thus drive shaft 61 drives second gyro wheel 6 and rotates downwards and the work platform contact, guarantee that base 1 can remove on work platform, rotate through bevel gear 74 and connect, drive shaft 61 pivoted stability can be guaranteed, the condition that the skew appears in second gyro wheel 6 has been avoided leading to the fact after long-term artifical rotation, the bottom that leads to second gyro wheel 6 can't be in same straight line with supporting wheel 72, the maintenance cost of follow-up drive shaft 61 has been increased, wire rope 73 rigidity is big elasticity is little simultaneously, the condition that bevel gear 74 appears rotating by oneself can be avoided.
The specific working process is as follows:
by placing the weldment waiting for eliminating the residual stress of the weld bead on the work platform, then inserting one side of the weldment into the inner side of the base 1, so that the weldment pushes the first roller 4 to move up and the second roller 6 to move down, then primarily clamping the base 1 on the weldment under the action of the return spring 41 and the support spring 63, because the hardness of the support spring 63 is greater than that of the return spring 41, the return spring 41 is more easily compressed, so that the second roller 6 pushes the weldment to move up and abut against the upper side of the mounting groove 11 under the action of the support spring 63, so that the base 1 is not easily swung up and down, and then energizing the electromagnet 7, so that the electromagnet 7 attracts the weldment to be in close contact with the balls 51 through the gap between the support plates 5, and so that the base 1 is not easily slid back and forth under the action of the friction force between the first roller 4 and the second roller 6, then, the front end impact head of the ultrasonic device 3 is in contact with a weld bead by adjusting the telescopic rod 2, the ultrasonic device 3 is started to impact the weld bead to eliminate internal residual stress, when a weldment is large, the driving motor 64 is started, so that the driving motor 64 drives the second roller 6 to rotate, the base 1 moves along the edge of the weldment by virtue of the ball 51, meanwhile, the electromagnet 7 always attracts the edge of the weldment to be attached to the ball 51, a guiding effect is provided for the movement of the base 1, and the base 1 moves to drive the ultrasonic device 3 to eliminate the residual stress of other positions of the weldment; if the weldment edge is not suitable for clamping, can be through rotating electro-magnet 7 this moment, then electro-magnet 7 circular telegram adsorbs base 1 on work platform, simultaneously under the rubber layer and the adjustment tank 71 effect on electro-magnet 7 right side, the supporting wheel 72 can extrude the rubber layer of different positions, then different deformation appears and adapts to the work platform of unevenness, guarantee simultaneously that the lower extreme of part supporting wheel 72 can keep on same straight line with the lower extreme of left second gyro wheel 6, make things convenient for second gyro wheel 6 to drive the follow-up removal of base 1 and carry out residual stress elimination to the different positions on the welding bead, when having avoided among the prior art ultrasonic device 3 to shift, must cut off the power supply and demagnetize to the magnetic force seat earlier, then personnel just can carry the transfer, cause work efficiency to be lower.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and so on.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely intended to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A method for eliminating residual stress of a welding bead is characterized in that: the elimination method comprises the following steps:
s1: after the weldment is welded, the weldment is placed on a manufacturing platform, the base (1) is inserted into the weldment through the oblique angles on the left sides of the first roller (4) and the second roller (6), then the weldment is pushed to move upwards to abut against the upper surface of the mounting groove (11) under the supporting action of the second roller (6) on the lower side, the base (1) is preliminarily clamped on the weldment, and the base (1) is prevented from swinging up and down;
s2: the electromagnet (7) is electrified and attracts the weldment, so that the support plate (5) is further in close contact with the weldment, the stability of the base (1) on the weldment is improved, the base (1) is prevented from moving back and forth, then the telescopic rod (2) is adjusted and passes through the bearing rotating shaft (21) at the upper end of the telescopic rod (2), so that the front end of the ultrasonic device (3) is in contact with a weld bead on the inner side of the weldment, then the telescopic rod (2) and the bearing rotating shaft (21) are fixed through bolts, the ultrasonic device (3) is fixed, and residual stress is eliminated through electrified operation;
s3: a driving motor (64) in the second roller (6) is started to operate, and the base (1) can move along the weldment under the assistance of the balls (51) and the first roller (4), so that residual stress on different positions on the weldment with larger size can be eliminated;
s4: when unsuitable base (1) presss from both sides tightly on the weldment, can place base (1) on work platform, then rotate electro-magnet (7), make supporting wheel (71) and platform contact, electro-magnet (7) drive bevel gear (74) through wire rope (73) and rotate simultaneously, thereby drive shaft (61) and rotate, make second gyro wheel (6) rotate downwards and contact with the platform, electro-magnet (7) drive supporting wheel (72) simultaneously, and keep on same straight line with the lower extreme of second gyro wheel (6) under the rubber layer effect, then remove through second gyro wheel (6) and supporting wheel (72), the realization can drive ultrasonic device (3) and remove and accomplish the welding bead residual stress on the weldment and eliminate.
2. A welding bead residual stress relieving device is characterized in that: the residual stress eliminating device is suitable for the weld bead residual stress eliminating method in claim 1, the residual stress eliminating device comprises a base (1), a telescopic rod (2), a bearing rotating shaft (21) and an ultrasonic device (3), the lower end of the telescopic rod (2) is rotatably connected to the middle position of the upper end of the base (1) through a bolt, the inner part of the upper end of the telescopic rod (2) is fixedly connected with the outer side of the bearing rotating shaft (21), the outer side of the ultrasonic device (3) is fixedly connected with the inner side of the bearing rotating shaft (21), a mounting groove (11) is formed in the left side of the inner part of the base (1), a first roller (4) is rotatably connected to the upper left side of the mounting groove (11) in the base (1), an outer side frame of the first roller (4) is slidably connected with the upper part of the base (1), and a reset spring (41) is fixedly connected to the upper end of the outer side frame of the first roller (4), both sides just are fixedly connected with backup pad (5) on the right side of first gyro wheel (4) about the inside of mounting groove (11), the inside left side of backup pad (5) is rotated and is connected with ball (51), ball (51) are along the surface evenly distributed of backup pad (5), the mounting groove (11) left side below of the inside of base (1) is rotated and is connected with second gyro wheel (6), the outside frame lower extreme fixedly connected with drive shaft (61) of second gyro wheel (6), the both ends of drive shaft (61) are rotated with the inside of base (1) and are connected, annular spread groove (62) have been seted up at the both ends of drive shaft (61), the inboard sliding connection of spread groove (62) has supporting spring (63), the hardness of supporting spring (63) is greater than the hardness of reset spring (41), the outside of second gyro wheel (6) is provided with driving motor (64), the right side of the base (1) is provided with a groove, and an electromagnet (7) is rotatably connected in the groove in the base (1).
3. The bead residual stress relief device according to claim 2, wherein: and the left sides of the first roller (4) and the second roller (6) are provided with oblique angles of 25-70 degrees.
4. The device for eliminating residual stress in a weld bead according to claim 2, wherein: the right side of the electromagnet (7) is provided with a rubber layer, the inner side of the rubber layer is provided with an adjusting groove (71), and the inside of the adjusting groove (71) is rotatably connected with a supporting wheel (72).
5. The weld bead residual stress relief device according to claim 2 or 4, wherein: the lower right corner of base (1) is provided with the lug, the downside edge on electro-magnet (7) right side rubber layer can with the right-hand member lateral wall laminating of lug when rotating.
6. The device for eliminating residual stress in a weld bead according to claim 2, wherein: all fixedly connected with wire rope (73) in the front and back side below of electro-magnet (7), wire rope (73) symmetry sets up, and the left end of two wire rope (73) is rotated in the below of base (1)1 left side mounting groove (11) and is connected with bevel gear (74), two the outside and the right-hand member meshing connection of corresponding drive shaft (61) of bevel gear (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210370425.6A CN114737045A (en) | 2022-04-09 | 2022-04-09 | Welding bead residual stress relieving device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210370425.6A CN114737045A (en) | 2022-04-09 | 2022-04-09 | Welding bead residual stress relieving device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114737045A true CN114737045A (en) | 2022-07-12 |
Family
ID=82280003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210370425.6A Pending CN114737045A (en) | 2022-04-09 | 2022-04-09 | Welding bead residual stress relieving device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114737045A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338765B1 (en) * | 1998-09-03 | 2002-01-15 | Uit, L.L.C. | Ultrasonic impact methods for treatment of welded structures |
| CN103952531A (en) * | 2014-05-12 | 2014-07-30 | 中国石油大学(华东) | Automatic ultrasonic impact device for circumferential weld |
| CN108754122A (en) * | 2018-06-27 | 2018-11-06 | 中国核工业华兴建设有限公司 | A kind of automatic ultrasonic impact elimination welding residual stress device |
| CN109371225A (en) * | 2018-12-20 | 2019-02-22 | 江苏阳明船舶装备制造技术有限公司 | One kind eliminating welding residual stress machine for automatic ultrasonic impact |
| CN110273063A (en) * | 2019-07-25 | 2019-09-24 | 大唐锅炉压力容器检验中心有限公司 | A kind of welding bead residual stress cancellation element and method |
| CN209652385U (en) * | 2019-07-29 | 2019-11-19 | 西南石油大学 | A kind of girth joint ultrasonic impact device |
| CN110983026A (en) * | 2019-12-18 | 2020-04-10 | 汪时 | Welding bead residual stress relieving device and method |
| CN111690807A (en) * | 2020-07-31 | 2020-09-22 | 江苏阳明船舶装备制造技术有限公司 | Magnetic automatic ultrasonic impact welding residual stress eliminating machine |
| CN114058836A (en) * | 2021-10-16 | 2022-02-18 | 李军 | Welding bead residual stress relieving device and method |
-
2022
- 2022-04-09 CN CN202210370425.6A patent/CN114737045A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338765B1 (en) * | 1998-09-03 | 2002-01-15 | Uit, L.L.C. | Ultrasonic impact methods for treatment of welded structures |
| CN103952531A (en) * | 2014-05-12 | 2014-07-30 | 中国石油大学(华东) | Automatic ultrasonic impact device for circumferential weld |
| CN108754122A (en) * | 2018-06-27 | 2018-11-06 | 中国核工业华兴建设有限公司 | A kind of automatic ultrasonic impact elimination welding residual stress device |
| CN109371225A (en) * | 2018-12-20 | 2019-02-22 | 江苏阳明船舶装备制造技术有限公司 | One kind eliminating welding residual stress machine for automatic ultrasonic impact |
| CN110273063A (en) * | 2019-07-25 | 2019-09-24 | 大唐锅炉压力容器检验中心有限公司 | A kind of welding bead residual stress cancellation element and method |
| CN209652385U (en) * | 2019-07-29 | 2019-11-19 | 西南石油大学 | A kind of girth joint ultrasonic impact device |
| CN110983026A (en) * | 2019-12-18 | 2020-04-10 | 汪时 | Welding bead residual stress relieving device and method |
| CN111690807A (en) * | 2020-07-31 | 2020-09-22 | 江苏阳明船舶装备制造技术有限公司 | Magnetic automatic ultrasonic impact welding residual stress eliminating machine |
| CN114058836A (en) * | 2021-10-16 | 2022-02-18 | 李军 | Welding bead residual stress relieving device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212443918U (en) | Positioning device based on welding robot | |
| CN111790696A (en) | Laser cleaning equipment and method for shaft component | |
| CN111438476A (en) | Frame type frame clamping mechanism capable of automatically overturning and used for welding | |
| CN211414496U (en) | Quick panel turnover machine | |
| CN110625228B (en) | Semitrailer girder welding process | |
| CN114737045A (en) | Welding bead residual stress relieving device and method | |
| CN219542101U (en) | Automatic surfacing equipment for wear-resisting plate | |
| CN211804647U (en) | Weld joint searching mechanism | |
| CN116214066A (en) | Bridge support welding fixture | |
| CN214079987U (en) | Welding fixture for vehicle frame assembly | |
| CN116060866A (en) | Welding anti-deformation mechanism for assembled building | |
| CN210232103U (en) | Positioning device of automatic welding machine | |
| CN210819659U (en) | Automatic compensation device for online cutting | |
| CN114227306A (en) | Intelligent overturning platform for machining steel member | |
| CN109909665B (en) | Semi-trailer frame assembly table | |
| CN117154560B (en) | R-angle rust-resistant electric power cabinet and R-angle forming equipment thereof | |
| CN219161543U (en) | Valve tightness test device | |
| CN219968037U (en) | Automobile sheet metal assembling mechanical arm | |
| CN216607592U (en) | Be used for metal furniture automatic spot welding robot | |
| CN218909582U (en) | Decoration panel overhead hoist for outer wall construction | |
| CN219053197U (en) | Barrel positioning arc striking tool | |
| CN216605731U (en) | Spraying device for steel structure | |
| CN117123998B (en) | Welding platform frock with adjustable | |
| CN220073791U (en) | Clamp for numerical control welding machine | |
| CN220287051U (en) | Movable lifting type inspection robot |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |