CN113828983A - Overturning fixture for welding ring-shaped part with circumferential boss - Google Patents
Overturning fixture for welding ring-shaped part with circumferential boss Download PDFInfo
- Publication number
- CN113828983A CN113828983A CN202111166791.1A CN202111166791A CN113828983A CN 113828983 A CN113828983 A CN 113828983A CN 202111166791 A CN202111166791 A CN 202111166791A CN 113828983 A CN113828983 A CN 113828983A
- Authority
- CN
- China
- Prior art keywords
- welding
- positioning
- ring
- supporting
- unit
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a turnover fixture for welding a ring-shaped element with a circumferential boss, which comprises a base, wherein a supporting shaft is arranged on the base, and a positioning unit, a supporting unit, an air path switching unit and a rotating unit are arranged on the supporting shaft. The invention has accurate positioning, the positioning unit, the supporting unit, the gas path switching unit and the rotating unit are mutually independent and do not influence each other, the ventilation protection of the reverse side of the welding seam position is realized, the molded surface support and the heat dissipation of the welding area during welding are realized, and the deformation of parts can be effectively controlled on the premise of ensuring the quality of the welding seam. The invention meets the requirements of welding operation, facilitates the operations of part turnover, circumferential boss position adjustment, horizontal rotation and the like in the welding process, and can simplify the welding work of the ring-shaped part with the circumferential boss.
Description
Technical Field
The invention relates to the technical field of welding fixture tools, in particular to an overturning fixture for welding a ring-shaped part with a circumferential boss.
Background
When the annular piece with the circumferential lug bosses is welded, the welding seam is positioned at the circumferential corner joint position of the lug bosses and the outer side of the annular piece, and the reverse side is required to be ventilated and protected. Because the boss is too close to the annular groove of the ring-shaped piece, the welding position space is narrow, the position of the ring-shaped piece is easy to interfere with a welding gun, and the welding difficulty is high.
The chinese utility model patent with publication number CN210818245U discloses an axle tube product welding clamping and centering device, which can ensure that the axle tube product workpiece can not slip in the rotating process by increasing the clamping force, thereby improving the welding stability. At present, a device for welding annular parts with circumferential bosses is not found in the prior art.
Disclosure of Invention
The invention aims to provide a turning clamp for welding a ring-shaped element with a circumferential boss, which is provided with a rotating mechanism, facilitates the operations of ring-shaped element turning, circumferential boss position adjustment, horizontal rotation and the like in the welding process and simplifies the welding operation.
The purpose of the invention is realized by the following technical scheme:
a turnover fixture for welding a ring-shaped element with a circumferential boss is characterized by comprising a positioning unit, a supporting unit, an air path switching unit and a rotating unit;
the positioning unit comprises a positioning plate for centering the ring-shaped piece, positioning columns and positioning screws, the number of the positioning columns and the number of the positioning screws are consistent with that of the bosses and are used for positioning the bosses, an upper cover plate is arranged above the positioning plate, the ring-shaped piece is placed between the positioning plate and the upper cover plate, and the positioning plate is fixedly connected with the positioning columns;
the supporting unit is provided with a supporting block combination matched with the positioning column and used for profile support during welding and heat dissipation of a welding area, the supporting block combination comprises a supporting block with a closed air path at the periphery and a spray head communicated with the closed air path and used for spraying air to the reverse side of a welding seam, a central hole communicated with the closed air path is formed in the supporting block, and the supporting unit is further provided with a ventilation pipeline communicated with the central hole;
the rotating unit comprises a base and a rotary table connected with the base through a connecting shaft, and the rotary table can rotate on the base around the connecting shaft; the turntable is provided with a turning assembly for controlling the turning of the positioning unit, the turning assembly comprises a support plate arranged below the positioning unit, a switching seat arranged below the support plate and a rotating shaft seat connected with the switching seat through a rotating shaft, the rotating shaft seat is fixed on the turntable on the surface of the base, one end of the rotating shaft is in interference fit with the switching seat, the other end of the rotating shaft is in sliding friction with a rotating shaft seat bushing, and the support plate is freely turned over through the rotating shaft; the rotating unit is also provided with a supporting shaft penetrating through the positioning mechanism and the supporting plate, the supporting shaft is in sliding friction with the supporting plate through a bushing, and the top end of the supporting shaft penetrates through and presses the upper cover plate; the rotating shaft seats are provided with a pair of rotating shaft seats which are symmetrically arranged on two sides of the rotating platform.
The gas path switching unit comprises an inner hole which is arranged in the base and used for conveying protective gas, the inner hole is communicated with the inside of the connecting shaft, and the inside of the connecting shaft is connected with the inside of the supporting shaft through a flexible pipeline; the inside of the supporting shaft is communicated with the ventilation pipeline of the supporting unit.
Furthermore, the supporting block assembly comprises a supporting block, a copper ring, a spray head and a set screw, a transverse ventilation groove is formed in the outer circular surface of the supporting block, a ventilation threaded hole is formed in the lower end face of the supporting block, the central hole and the ventilation threaded hole are connected through the transverse ventilation groove in the surface of the supporting block, the copper ring and the supporting block are welded into a whole along the periphery, and a closed air path is formed between the combination surface of the copper ring and the supporting block.
Furthermore, the end with the small diameter on the spray head is in clearance fit with the copper ring, and the end with the large diameter is in interference fit with the supporting block, so that the air tightness is ensured.
Furthermore, an air spring is installed below the support plate, and two ends of the air spring are connected with the support plate and the rotary table respectively.
Furthermore, a support is arranged on the rotary table, the support is arranged in the orthogonal direction of the connecting lines of the two rotating shaft seats, and the support is connected with one side of the support plate to limit the turnover motion of the support plate.
Further, the positioning screw is concentric with the boss, and the boss is supported on the end face of the positioning column.
Furthermore, steel balls and a retainer for restraining the rolling track of the steel balls are uniformly distributed between the rotary table and the base along the periphery of the connecting shaft, and the rotary table rotates in the horizontal direction through the rolling of the steel balls.
Furthermore, the number of the gas springs is 2, the gas springs are symmetrically arranged on the support plate, and the gas springs are respectively connected with the support plate and the rotary table through the support.
Furthermore, stop device includes angle round pin and angle piece, the angle round pin is installed in revolving stage one end, the angle piece is installed on the base, the angle round pin realizes revolving stage angular spacing with the cooperation of angle piece.
Compared with the prior art, the invention has the following beneficial effects:
the invention has accurate positioning, the positioning unit, the supporting unit, the gas path switching unit and the rotating unit are mutually independent and do not influence each other, the ventilation protection of the reverse side of the welding seam position is realized, the molded surface support and the heat dissipation of the welding area during welding are realized, and the deformation of parts can be effectively controlled on the premise of ensuring the quality of the welding seam.
The invention meets the requirements of welding operation, and is convenient for operations such as part turnover, circumferential boss position adjustment, horizontal rotation and the like in the welding process.
The invention provides buffering and resetting torque for the overturning movement by means of the elastic force of the gas spring, thereby greatly reducing the labor intensity of operators.
Drawings
FIG. 1 is a front view of an overturning jig for welding ring-shaped members with circumferential bosses;
FIG. 2 is a top view of an overturning jig for welding ring-shaped members with circumferential bosses;
FIG. 3 is a working schematic diagram of an overturning fixture for welding a ring-shaped member with a circumferential boss;
FIG. 4 is a schematic structural diagram of a positioning unit;
FIG. 5 is a schematic structural view of the supporting unit;
FIG. 6 is a schematic structural view of the supporting unit;
FIG. 7 is a schematic structural view of a rotating unit;
FIG. 8 is a schematic view of the operation in a welding state;
fig. 9 is a schematic structural view of the air path switching unit;
FIG. 10 is a partial schematic view of a rotary unit;
FIG. 11 is a schematic structural view of an annular member with circumferential bosses;
the device comprises a base 1, a retainer 2, a turntable 3, an angle pin 4, an angle block 5, a support 6, a bolt 7, a hook 8, an upper cover plate 9, a multi-handle nut 10, a support shaft 11, a conical block 12, a positioning screw 13, a support block 14, a positioning column 15, a stop pin 16, a support 17, a support plate 18, an air spring 19, a steel ball 20, a connecting shaft 21, a rotating shaft seat 22, a flexible pipeline 23, a sealing gasket 24, a bushing 25, a stopper 26, a rotating shaft 27, an adapter seat 28, a positioning plate 29, a spray head 30, a copper ring 31, a set screw 32, a hose joint 33 and a vent plate 34.
Detailed Description
The drawings are for illustration purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.
Example 1
As shown in fig. 1 to 10, the present embodiment provides an overturning jig for welding a ring-shaped member with a circumferential boss, which includes a positioning unit, a supporting unit, a rotating unit and an air passage switching unit.
The positioning unit is used for positioning the ring-shaped piece and comprises a positioning plate 29, a positioning column 15 and a positioning screw 13, an upper cover plate 9 is arranged above the positioning plate 29, the ring-shaped piece is placed between the positioning plate 29 and the upper cover plate 9, and the upper cover plate 9 and the ring-shaped piece are compressed through the multi-handle nut 10. Reference column 15 and 29 interference fit of locating plate, this embodiment passes through the fix with screw on locating plate 29, and reference column 15 is along boss evenly distributed, and reference column 15 passes through set screw 13 with the boss and fixes, and set screw 13 is concentric with the boss, and the boss supports and leans on reference column 15 terminal surface, and the boss bottom surface is apart from the annular member inner wall generating line distance at 0 ~ 0.5 mm. The positioning screw 13 is matched with the positioning column 15 according to H7/g6, so that the positioning accuracy of the boss is ensured. The fastening screw in the embodiment can also be fixed by other conventional methods such as bolts and riveting, and the technical effect of the invention can be achieved. The positioning unit is integrally mounted on a support plate 18, and the support plate 18 is connected with a rotating unit for controlling the rotation and overturning of the positioning unit.
The supporting unit is arranged on the positioning unit and used for profile support during welding and heat dissipation of a welding area, and the supporting unit comprises a supporting block 14, a copper ring 31, a spray head 30 and a set screw 32. The supporting block 14 is provided with a central hole, and the outer circular surface of the supporting block 14 is provided with a transverse vent groove which is communicated with a vent threaded hole on the lower end surface and the central hole of the supporting block. The copper ring 31 and the supporting block 14 are welded into a whole along the periphery, and the joint surface of the copper ring and the supporting block forms a closed air path. The spray head 30 is arranged in the supporting block 14, and the position of the spray head 30 is fixed through a set screw 32; the diameters of the two ends of the nozzle 30 are different, a step surface is formed on the surface of the nozzle 30, wherein the end with the small diameter is in clearance fit with the copper ring 31, and the end with the large diameter is in interference fit with the supporting block 14, so that the air tightness is ensured. The step surface of the nozzle 30, the central hole of the supporting block and the copper ring 31 jointly form an air-through ring groove. The outer circle of the small end of the spray head 30 is uniformly provided with a plurality of small vent holes along the circumference, so that the protective gas in the vent ring groove directly reaches the reverse area of the welding seam through the small vent holes, and the number of the small vent holes is 8 in the embodiment. For the convenience of assembly, a square hole is further formed in the supporting block 14, the spray head 30 is installed from one side of the square hole of the supporting block, and the square hole is matched with the positioning column 15 according to H7/g 6. When the supporting block is assembled, the square hole is sleeved into the positioning column 15 in the positioning unit, and then the positioning column 15 slides along the radial direction, so that the cylindrical section of the positioning column 15 is inserted into the central hole of the supporting block 14. A gap is reserved between the central hole of the supporting block 14 and the cylindrical section of the positioning column 15, so that the processing difficulty of the supporting unit can be reduced, and the deformation of the cylindrical section of the positioning column 15 caused by the stress of the supporting unit can be avoided, and the positioning precision is further influenced. A vent plate is arranged below the positioning plate and communicated with the ventilation threaded hole through an internal ventilation pipeline.
A conical block 12 is arranged between the supporting unit and the supporting shaft 11, a corresponding conical surface is arranged on the supporting block 14 and is in contact with the conical block 12, and the conical block 12 is connected with the supporting shaft 11 through a nut. When the multi-handle nut 10 rotates in work, the nut rotates downwards, and the conical block 12 pushes the supporting unit downwards to be unfolded outwards under the guidance of the positioning unit. Finally, the outer ring copper ring 31 of the supporting unit is attached to the welding area of the ring piece, the molded surface of the welding area of the ring piece is tightly supported, heat dissipation is enhanced on the welding heat affected zone of the welding, and the purpose of controlling welding deformation of the ring piece is achieved.
The rotating unit controls the horizontal rotation and turnover of the workbench. The rotary platform is provided with a base 1, a rotary table 3 on the base 1 is connected with the base 1 through a connecting shaft 21, and the rotary table can rotate on the base. In the embodiment, steel balls 20 are uniformly distributed below the rotary table 3 along a connecting shaft 21, a restraint frame is arranged in the base 1, and the steel balls 20 are restrained by the retainer 2 to roll, so that the rotary table 3 rotates and is subjected to rolling friction, and the movement resistance of the rotary table 3 is reduced. An angle pin 4 is installed at one end of the rotary table 3, and a corresponding angle block 5 is installed on the base 1 to form a limiting device. When the multi-handle nut 10 is pulled in the horizontal direction, the angular pin 4 is pressed to retreat and is separated from the constraint of the angular block 5, and the rotary table 3 can rotate freely; after the part rotates 180 degrees, the angle pin 4 enters the angle block 5 at the opposite position, and the angle pin 4 is ejected out to limit the rotation of the rotary table 3, so that the rotary table 3 can keep stable and static at the two opposite positions, and the horizontal steering of the part is realized. In other embodiments, the turntable and the base are connected and rotate by adopting similar technical means such as a slide rail and the like, and the aim of the invention can be achieved by arranging the slide rail and the slide groove between the turntable and the base and installing the turntable and the base through a conventional technical means.
The turning assembly in the rotating unit is used for controlling the turning of the positioning mechanism and comprises a support plate 18 arranged below the positioning mechanism, two adapter seats 28 symmetrically arranged on two sides of the support plate 18 are fixed below the support plate 18, the adapter seats 28 are respectively connected with two corresponding rotating shaft seats 22 through rotating shafts 27, the two rotating shaft seats 22 are fixed on two sides of the rotary table 3, and the support plate 18 and the whole positioning mechanism are turned around the axis of the rotating shafts 27. The axis line of the two rotating shafts is orthogonal to the axis of the positioning mechanism, one end of the rotating shaft 27 is in interference fit with the adapter 28, the set screw 32 is fixed, and the other end of the rotating shaft 27 is in sliding friction with the bushing 25 of the rotating shaft seat 22, so that the support plate 18 can freely turn around the axes of the two shafts.
The rotating unit further comprises a supporting shaft 11, the supporting shaft 11 penetrates through the positioning mechanism and is fixedly connected with the positioning mechanism through a flange, the supporting shaft 11 is in sliding friction with the supporting plate 18 through a bushing, the top end of the supporting shaft compresses the upper cover plate through the multi-handle nut 10 to achieve compression of the ring part, the multi-handle nut 10 is arranged to be anti-loose and is provided with a shoulder nut, the handle drives the mandrel and the whole positioning mechanism to rotate, and the circumferential position is adjustable when parts are welded. The bottom of the supporting shaft is provided with a nut, so that the positioning unit and the supporting plate 18 are attached and the tightness is kept, the supporting shaft 11 has a blocking feeling when rotating, and can be stably and statically arranged at any angle position when the angular position of the boss is adjusted by welding, and an operator can weld conveniently. The supporting shaft 11 is hollow, and an air hole is arranged at the position of the vent plate and communicated with a vent pipeline on the vent plate.
The turntable 3 is provided with a support 6, the support 6 is arranged in the orthogonal direction of the connecting line of the supporting shaft 11, and the support 6 is connected with a support plate 18 through a bolt 7 and a hook 8 to limit the turnover motion of the support plate 18. In order to facilitate installation of the ring-shaped piece, the surface of the support plate 18 is provided with a groove for installing the stop pin 16, the stop pin 16 is firstly installed in the support plate 18 during installation, the stop pin is matched with the fixed groove to limit the rotation of the positioning mechanism, and the support shaft 11 cannot rotate along with the rotation when the nuts are screwed down during installation. After the ring member is positioned and compressed, the stop pin 16 can be removed, and the positioning mechanism can restore to rotate freely. The base 1 is provided with the stop block 26, after the assembly of parts is completed, the bolt 7 is pulled out, the multi-handle nut 10 is pulled, the support plate 18 bears the whole clockwise turning of the positioning mechanism, when the support plate 18 collides with the stop block 26, the support plate 18 is vertical, the axis of the part is kept horizontal, and the part enters a welding state.
Two gas springs 19 are symmetrically arranged below the support plate 18 and are respectively connected with the support plate 18 and the rotary table 3 through a bracket 17. When an operator pulls the multi-handle nut 10 clockwise to rotate around the rotating shaft, the support plate 18 overturns to compress the air spring 19, and the air spring 19 can provide certain buffering to enable the positioning unit to fall stably. After welding is finished, the handle is pulled anticlockwise, the air spring 19 returns at the moment, certain torque required for resetting can be provided, the positioning unit is assisted to rotate, and labor intensity of operators is reduced. In this embodiment, the elastic torque generated by the gas spring 19 in the final compression state relative to the rotating shaft needs to be smaller than the gravity torque generated by the part and the positioning unit relative to the rotating shaft, otherwise the support plate 18 cannot be turned over to the vertical state, and the axis of the part inclines upwards and the state is unstable.
The gas circuit switching unit is provided with a ventilating pipeline from the base and the connecting shaft to the supporting unit and used for communicating protective gas to the welding surface. Be equipped with the hole that is used for carrying protective gas on the base 1, base 1 surface is equipped with hose nipple 33 and hole connection, and hose nipple 33 connects flexible pipeline 23, and the flexible pipeline 23 other end passes through pipe nipple flange and 11 centre bores intercommunication of back shaft. The inner cavity of the connecting shaft 21 is communicated with the inner cavity of the supporting shaft 11 through a flexible hose, and the flexible hose 23 in the embodiment adopts a silicone tube. The upper end face of the pipe joint flange is attached to the bottom end of the support shaft 11, gas enters the inner cavity of the support shaft 11 through the pipe joint, and the lower end face of the pipe joint flange is provided with a sealing gasket and is compressed through a pipe nut to realize gas sealing of the pipe joint. In the welding process, the pipe nut rotates along with the mandrel, the pipe joint can be kept still, and the silicone tube at the bottom of the mandrel is prevented from being wound. The supporting shaft 11 is communicated with the vent plate air hole, air enters the circulation channel of the supporting block through the inner hole, the flexible pipeline 23, the supporting shaft 11, the vent plate pipeline and the vent thread, and protective gas is sprayed to the back of the welding surface through the spray head.
The embodiment also provides a working process of the overturning fixture for welding the ring-shaped part with the circumferential boss, which comprises an installation process and a welding process. The installation process comprises the following specific steps:
s1, checking the initial state of the clamp, whether the air spring 19 is reset, whether the supporting block combination is in a backspacing state, whether the silicone tube is intact and does not leak air, and whether the movement of each rotating part is smooth;
s2, the bolt 7 penetrates through the hook 8 to prevent overturning, the stop pin 16 is installed, and the rotation of the positioning plate 29 is limited;
s3, loading the ring part to a positioning plate 29, screwing down a nut to tightly support a support block combination, loading the ring part to an upper cover plate 9, and screwing down the multi-handle nut 10 and the shoulder nut to tightly press the ring part;
s4, removing the stop pin 16, rotating the handle, sequentially installing six bosses, and tightening the positioning screw 13 for pressing;
s5, protective gas is communicated.
The welding can be carried out after the installation is finished, and the welding process is as follows:
y1. removing the bolt 7, pulling the handle to make the support plate 18 rotate clockwise to the vertical state, the support plate 18 contacts with the stop 26;
y2. rotating the handle to adjust the angular position of the boss to be welded, and starting to weld in sections;
y3. welding the upper half part, after welding, pulling the handle to rotate horizontally, ejecting the angle to the pin 4 to retreat, the turntable 3 bearing the whole rotation;
y4. the rotary table 3 rotates 180 degrees horizontally, the ejection angle pin 4 is pressed into the V-shaped angle block 5 at the opposite position to limit;
y5. rotating the handle to make the lower half part of the boss to be welded upward to complete the welding;
y6. welding the bosses in sequence according to the method;
y7. after the bosses are welded completely, the handle is pulled to turn over and reset, and the return stroke of the gas spring 19 is assisted;
y8. the support plate 18 returns to the horizontal state, the bolt 7 is installed for protection, the stop pin 16 is installed for limiting, the nuts are sequentially removed, and the parts are taken out.
In the embodiment, the positioning fixture is used for ensuring the positioning accuracy of the ring-shaped piece, the positioning part and the tightening, heat dissipation and ventilation protection part are independent from each other and do not influence each other, and the deformation of parts is effectively controlled on the premise of ensuring the quality of a welding seam; the part is through the upset and the rotation of a plurality of directions, guarantees welded efficiency, reduces the intensity of labour of artifical upset.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A turnover fixture for welding a ring-shaped element with a circumferential boss is characterized by comprising a positioning unit, a supporting unit, an air path switching unit and a rotating unit;
the positioning unit comprises a positioning plate for centering the ring-shaped piece, positioning columns and positioning screws, the number of the positioning columns and the number of the positioning screws are consistent with that of the bosses and are used for positioning the bosses, an upper cover plate is arranged above the positioning plate, the ring-shaped piece is placed between the positioning plate and the upper cover plate, and the positioning plate is fixedly connected with the positioning columns;
the supporting unit is provided with a supporting block combination matched with the positioning column and used for profile support during welding and heat dissipation of a welding area, the supporting block combination comprises a supporting block with a closed air path at the periphery and a spray head communicated with the closed air path and used for spraying air to the reverse side of a welding line, and the supporting block is provided with a ventilation channel communicated with the closed air path;
the rotating unit comprises a base and a rotary table connected with the base through a connecting shaft, and the rotary table can rotate on the base by taking the connecting shaft as a center; the turntable is provided with a turning assembly for controlling the turning of the positioning unit, the turning assembly comprises a support plate arranged below the positioning unit, a switching seat arranged below the support plate and a rotating shaft seat connected with the switching seat through a rotating shaft, the rotating shaft seat is fixed on the turntable on the surface of the base, one end of the rotating shaft is in interference fit with the switching seat, the other end of the rotating shaft is in sliding friction with a rotating shaft seat bushing, and the support plate is freely turned over through the rotating shaft; the rotating unit is also provided with a supporting shaft penetrating through the positioning mechanism and the supporting plate, the supporting shaft is in sliding friction with the supporting plate through a bushing, and the top end of the supporting shaft penetrates through and presses the upper cover plate;
the gas path switching unit comprises an inner hole which is arranged in the base and used for conveying protective gas, and the inner hole is communicated with the inner cavity of the hollow support shaft through a flexible pipeline; the inner cavity of the support shaft is communicated with the air duct of the support unit through a channel.
2. The overturning clamp for welding the annular member with the circumferential boss as claimed in claim 1, wherein the supporting block assembly comprises a supporting block, a copper ring, a nozzle and a set screw, a transverse ventilation groove is formed in the outer circumferential surface of the supporting block, a ventilation threaded hole is formed in the lower end surface of the supporting block, the central hole and the ventilation threaded hole are connected through the transverse ventilation groove in the surface of the supporting block, the copper ring and the supporting block are welded into a whole along the circumference, and a closed air path is formed by the combination surface of the copper ring and the supporting block.
3. The overturning clamp for welding the ring-shaped member with the circumferential boss as claimed in claim 2, wherein the surface of the nozzle is provided with a step surface, one end of the nozzle is in clearance fit with the copper ring, and the other end of the nozzle is in interference fit with the supporting block and is fixed by a set screw; the step surface of the spray head, the central hole of the supporting block and the copper ring form an air-through ring groove, and one end of the spray head, which is close to the copper ring, is provided with an air-through small hole.
4. The overturning clamp for welding the annular part with the circumferential boss according to claim 3, wherein one end with a small diameter on the spray head is in clearance fit with the copper ring, and the other end with a large diameter is in interference fit with the supporting block, so that air tightness is ensured.
5. The overturning fixture for welding the ring-shaped member with the circumferential boss according to claim 1, wherein a gas spring is mounted below the supporting plate, and two ends of the gas spring are respectively connected with the supporting plate and the turntable.
6. The overturning fixture for welding the ring-shaped member with the circumferential boss as claimed in claim 1, wherein a support is arranged on the turntable, and the support is connected with one edge of the support plate to limit the overturning motion of the support plate.
7. The overturning jig for welding of annular parts with circumferential bosses as claimed in claim 1, wherein the set screws are concentric with the bosses, and the bosses are supported against end faces of the positioning posts.
8. The turning clamp for welding the ring-shaped member with the circumferential boss according to claim 1, wherein steel balls and a retainer for restraining rolling tracks of the steel balls are uniformly distributed between the turntable and the base along the periphery of the connecting shaft, and the turntable rotates in the horizontal direction by rolling of the steel balls.
9. The turning clamp for welding the ring-shaped member with the circumferential boss according to claim 5, wherein the number of the gas springs is 2, the gas springs are symmetrically arranged on the support plate, and the gas springs are respectively connected with the support plate and the rotary table through a support.
10. The overturning fixture for welding of ring-shaped members with circumferential bosses as claimed in claim 1, wherein the limiting device comprises an angle pin and an angle block, the angle pin is installed at one end of the turntable, the angle block is installed on the base, and the angle pin and the angle block are matched to realize angular limiting of the turntable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111166791.1A CN113828983B (en) | 2021-09-30 | 2021-09-30 | Overturning clamp for welding annular piece with circumferential boss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111166791.1A CN113828983B (en) | 2021-09-30 | 2021-09-30 | Overturning clamp for welding annular piece with circumferential boss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113828983A true CN113828983A (en) | 2021-12-24 |
| CN113828983B CN113828983B (en) | 2023-09-08 |
Family
ID=78968148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111166791.1A Active CN113828983B (en) | 2021-09-30 | 2021-09-30 | Overturning clamp for welding annular piece with circumferential boss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113828983B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116748791A (en) * | 2023-08-22 | 2023-09-15 | 济南鼎拓电气有限公司 | Automatic conveying equipment for welding tubular bus |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202591902U (en) * | 2012-05-07 | 2012-12-12 | 长沙建鑫机械制造有限公司 | Welding positioning tool for weld joints inside fixing support legs of automobile crane |
| CN203992818U (en) * | 2014-06-24 | 2014-12-10 | 杭州新松机器人自动化有限公司 | A kind of multistation seat angle adjustor welder |
| CN105618982A (en) * | 2016-03-09 | 2016-06-01 | 郑州精益达汽车零部件有限公司 | Work fixture for welding passenger car axle housing with leaf spring backing plates |
| CN107309587A (en) * | 2017-07-05 | 2017-11-03 | 庆铃汽车（集团）有限公司 | A kind of frock for robot welding white body |
| CN207104076U (en) * | 2017-08-09 | 2018-03-16 | 佛山晟华汽车零部件制造有限公司 | A kind of turnover stud welding fixture |
| CN107803619A (en) * | 2017-09-28 | 2018-03-16 | 中国航发动力股份有限公司 | A kind of device for assembling and welding for fancase sub-assembly |
| CN210281248U (en) * | 2019-07-08 | 2020-04-10 | 十堰皓凡工贸有限公司 | Welding fixture for steering wheel framework assembly |
| JP2020179496A (en) * | 2019-04-25 | 2020-11-05 | 深▲せん▼連碩自動化科技有限公司 | Assembly and welding device for electric parking brake of automobile |
| CN112756888A (en) * | 2021-01-15 | 2021-05-07 | 中车眉山车辆有限公司 | Welding deformation control device for corner post assembly of railway wagon |
-
2021
- 2021-09-30 CN CN202111166791.1A patent/CN113828983B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202591902U (en) * | 2012-05-07 | 2012-12-12 | 长沙建鑫机械制造有限公司 | Welding positioning tool for weld joints inside fixing support legs of automobile crane |
| CN203992818U (en) * | 2014-06-24 | 2014-12-10 | 杭州新松机器人自动化有限公司 | A kind of multistation seat angle adjustor welder |
| CN105618982A (en) * | 2016-03-09 | 2016-06-01 | 郑州精益达汽车零部件有限公司 | Work fixture for welding passenger car axle housing with leaf spring backing plates |
| CN107309587A (en) * | 2017-07-05 | 2017-11-03 | 庆铃汽车（集团）有限公司 | A kind of frock for robot welding white body |
| CN207104076U (en) * | 2017-08-09 | 2018-03-16 | 佛山晟华汽车零部件制造有限公司 | A kind of turnover stud welding fixture |
| CN107803619A (en) * | 2017-09-28 | 2018-03-16 | 中国航发动力股份有限公司 | A kind of device for assembling and welding for fancase sub-assembly |
| JP2020179496A (en) * | 2019-04-25 | 2020-11-05 | 深▲せん▼連碩自動化科技有限公司 | Assembly and welding device for electric parking brake of automobile |
| CN210281248U (en) * | 2019-07-08 | 2020-04-10 | 十堰皓凡工贸有限公司 | Welding fixture for steering wheel framework assembly |
| CN112756888A (en) * | 2021-01-15 | 2021-05-07 | 中车眉山车辆有限公司 | Welding deformation control device for corner post assembly of railway wagon |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116748791A (en) * | 2023-08-22 | 2023-09-15 | 济南鼎拓电气有限公司 | Automatic conveying equipment for welding tubular bus |
| CN116748791B (en) * | 2023-08-22 | 2023-10-13 | 济南鼎拓电气有限公司 | Automatic conveying equipment for welding tubular bus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113828983B (en) | 2023-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113828983A (en) | Overturning fixture for welding ring-shaped part with circumferential boss | |
| CN114107869B (en) | Thermal spraying treatment system and thermal spraying treatment method | |
| JPS61286096A (en) | Method and device for fitting mounting jig | |
| CN209919368U (en) | Head processing frock | |
| CN209532381U (en) | A kind of argon arc welder for valve production | |
| CN113084421A (en) | Annular welding robot for axle housing rear cover | |
| CN108942022B (en) | Guardrail welding method based on guardrail welding equipment | |
| CN103846603B (en) | A kind of new type auto welding turnover fixture | |
| CN204019049U (en) | A kind of fixture turntable mechanism | |
| JPH0751848A (en) | Seam welding device for large-sized steel pipe | |
| CN110883633B (en) | Positioning, supporting and clamping device for large thin-wall cylindrical part | |
| CN207873963U (en) | A kind of flexible sheet positioning device | |
| CN114473361B (en) | Annular welding fixing device and annular welding equipment | |
| CN114227331B (en) | Shaft finish machining fixture and shaft machining machine tool | |
| WO2023004968A1 (en) | Rotary clamping quick-change workbench | |
| CN115722858A (en) | Welding jig and welding machine | |
| CN214393331U (en) | Ring part fixing device | |
| CN214721328U (en) | Automatic annular welding device for automobile sleeve parts | |
| CN112621104B (en) | Roll forging die repair welding device for detecting forging | |
| CN206936673U (en) | Locating and clamping apparatus | |
| CN209736923U (en) | Rotary welding table | |
| KR102003257B1 (en) | Air balancer for placing preforms in the mandrel of a vertival mill | |
| CN113953542A (en) | Automobile wheel hub processing positioning system and intelligent cleaning and precision machining production line | |
| CN112427939A (en) | But big moment of torsion reducing tire nut assembly quality | |
| CN112427775A (en) | Automatic annular welding device for automobile sleeve parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |