CN113828983B - Overturning clamp for welding annular piece with circumferential boss - Google Patents
Overturning clamp for welding annular piece with circumferential boss Download PDFInfo
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- CN113828983B CN113828983B CN202111166791.1A CN202111166791A CN113828983B CN 113828983 B CN113828983 B CN 113828983B CN 202111166791 A CN202111166791 A CN 202111166791A CN 113828983 B CN113828983 B CN 113828983B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- 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
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- 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
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- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model discloses a turnover fixture for welding annular parts with circumferential bosses, which comprises a base, wherein a supporting shaft is arranged on the base, and a positioning unit, a supporting unit, an air passage switching unit and a rotating unit are arranged on the supporting shaft. The utility model has accurate positioning, the positioning unit, the supporting unit, the gas circuit switching unit and the rotating unit are mutually independent and do not affect each other, realizes ventilation protection of the reverse side of the welding seam position, and realizes profile support and heat dissipation of a welding area during welding, thereby effectively controlling the deformation of parts on the premise of ensuring the welding seam quality. The utility model meets the welding operation requirement, is convenient for the operations of part overturning, circumferential boss position adjustment, horizontal rotation and the like in the welding process, and can simplify the welding work of the annular piece with the circumferential boss.
Description
Technical Field
The utility model relates to the technical field of welding fixture tools, in particular to a turnover fixture for welding annular parts with circumferential bosses.
Background
When the circumferential boss annular piece is welded, the welding seam is positioned at the circumferential corner joint position of the boss and the outer side of the annular piece, and the reverse ventilation protection is required. Because the boss is too close to the annular groove of the annular piece, the welding position space is narrow, the annular piece position is easy to interfere with a welding gun, and the welding difficulty is high.
The Chinese patent publication No. CN210818245U discloses a welding clamping centering device for shaft tube products, which ensures that the shaft tube products cannot slip in the rotating process by increasing the clamping force, and improves 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 utility model aims to overcome the defects in the prior art, and provides a turnover fixture for welding an annular piece with a circumferential boss, which is provided with a rotating mechanism, so that the operation of turnover, circumferential boss position adjustment, horizontal rotation and the like of the annular piece in the welding process is facilitated, and the welding operation is simplified.
The aim of the utility model is achieved by the following technical scheme:
the turnover fixture for welding the annular piece with the circumferential boss is characterized by comprising a positioning unit, a supporting unit, an air passage switching unit and a rotating unit;
the positioning unit comprises a positioning plate for centering the annular piece, positioning columns and positioning screws, the number of which is consistent with that of the bosses, are uniformly distributed on the positioning plate and used for positioning the bosses, an upper cover plate is arranged above the positioning plate, the annular piece is placed between the positioning plate and the upper cover plate, and the positioning plate is fixedly connected with the positioning columns;
the support unit is provided with a support block combination matched with the positioning column and used for supporting the molded surface during welding and radiating a welding area, the support block combination comprises a support block with a closed air passage at the periphery and a spray head communicated with the closed air passage and used for spraying air to the reverse side of a welding seam, the support block is provided with a central hole communicated with the closed air passage, and the support unit is also 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 around the connecting shaft on the base; the rotary table is provided with a turnover assembly for controlling the turnover of the positioning unit, the turnover assembly comprises a support plate arranged below the positioning unit, a rotating shaft seat arranged below the support plate and connected with the rotating shaft seat through a rotating shaft, the rotating shaft seat is fixed on the rotary table on the surface of the base, one end of the rotating shaft is in interference fit with the rotating shaft seat, the other end of the rotating shaft is in sliding friction with a lining of the rotating shaft seat, and the support plate can freely turn over through the rotating shaft; the rotating unit is also provided with a supporting shaft penetrating through the positioning mechanism and the support plate, the supporting shaft is in sliding friction with the support 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 table.
The gas circuit 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 support shaft is communicated with the ventilation pipeline of the support unit.
Further, the support block combination includes supporting shoe, copper ring, shower nozzle and holding screw, the outer disc of supporting shoe sets up horizontal ventilation groove, and the lower terminal surface is equipped with the screw hole that ventilates, the centre bore passes through the horizontal ventilation groove connection on supporting shoe surface with the screw hole that ventilates, copper ring and supporting shoe are along week welding as an organic wholely, and both combine the face and seal the gas circuit.
Further, the small-diameter end of the spray head is in clearance fit with the copper ring, and the large-diameter end of the spray head is in interference fit with the supporting block, so that air tightness is guaranteed.
Further, a gas spring is arranged below the support plate, and two ends of the gas spring are respectively connected with the support plate and the turntable.
Further, the turntable is provided with a support, the support is arranged in the orthogonal direction of the connecting line of the two rotating shaft seats, and the support is connected with one side of the support plate to limit the overturning movement of the support plate.
Further, the set screw is concentric with the boss, which rests on the end face of the set post.
Further, 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 through rolling of the steel balls.
Further, 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 turntable through the support.
Further, the limiting device comprises an angular pin and an angular block, wherein the angular pin is arranged at one end of the rotary table, the angular block is arranged on the base, and the angular pin and the angular block are matched to realize angular limiting of the rotary table.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model has accurate positioning, the positioning unit, the supporting unit, the gas circuit switching unit and the rotating unit are mutually independent and do not affect each other, realizes ventilation protection of the reverse side of the welding seam position, and realizes profile support and heat dissipation of a welding area during welding, thereby effectively controlling the deformation of parts on the premise of ensuring the welding seam quality.
The utility model meets the welding operation requirement and is convenient for the operations of part overturning, circumferential boss position adjustment, horizontal rotation and the like in the welding process.
According to the utility model, buffer and reset torque is provided for overturning movement by means of the elasticity of the gas spring, so that the labor intensity of operators is greatly reduced.
Drawings
FIG. 1 is a front view of a flip fixture for welding an annular part with a circumferential boss;
FIG. 2 is a top view of a flip fixture for welding an annular part with circumferential bosses;
FIG. 3 is a schematic working diagram of a turning fixture for welding annular parts with circumferential bosses;
FIG. 4 is a schematic 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 the rotation unit;
FIG. 8 is a schematic diagram of the operation of the welding station;
FIG. 9 is a schematic diagram 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 a ring with circumferential bosses;
wherein 1 is a base, 2 is a retainer, 3 is a turntable, 4 is an angular pin, 5 is an angular block, 6 is a support, 7 is a bolt, 8 is a hook, 9 is an upper cover plate, 10 is a multi-handle nut, 11 is a supporting shaft, 12 is a conical block, 13 is a positioning screw, 14 is a supporting block, 15 is a positioning column, 16 is a stop pin, 17 is a bracket, 18 is a support plate, 19 is a gas spring, 20 is a steel ball, 21 is a connecting shaft, 22 is a rotating shaft seat, 23 is a flexible pipe, 24 is a sealing gasket, 25 is a bushing, 26 is a stop, 27 is a rotating shaft, 28 is a rotating seat, 29 is a positioning plate, 30 is a spray head, 31 is a copper ring, 32 is a set screw, 33 is a hose joint, and 34 is a ventilation plate.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the utility model; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship described in the drawings are for illustrative purposes only and are not to be construed as limiting the utility model.
Example 1
As shown in fig. 1 to 10, the present embodiment provides a turnover jig for welding an annular 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 annular 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 annular piece is placed between the positioning plate 29 and the upper cover plate 9, and the upper cover plate 9 and the annular piece are compressed through a multi-handle nut 10. The locating column 15 and the locating plate 29 are in interference fit, the locating column 15 is fixed on the locating plate 29 through screws, the locating column 15 is evenly distributed along the boss, the locating column 15 and the boss are fixed through the locating screw 13, the locating screw 13 is concentric with the boss, the boss is supported on the end face of the locating column 15, and the distance between the bottom face of the boss and the bus bar of the inner wall of the annular piece is 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 this embodiment may be fixed by other conventional manners, such as bolts, rivets, etc., so as to achieve the technical effects of the present utility model. The positioning unit is integrally mounted on the support plate 18, and the support plate 18 is connected with the rotating unit and used for controlling the rotation and overturning of the positioning unit.
The supporting unit is arranged on the positioning unit for profile support during welding and heat dissipation of the welding area, and 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, the outer circular surface of the supporting block 14 is provided with a transverse ventilation groove, and the ventilation threaded hole of the lower end surface is communicated with the central hole of the supporting block. The copper ring 31 and the supporting block 14 are welded into a whole along the circumference, and the combination 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 spray head 30 are different, a step surface is formed on the surface of the spray head 30, wherein one end with a small diameter is in clearance fit with the copper ring 31, and the other end with a large diameter is in interference fit with the supporting block 14, so that air tightness is ensured. The step surface of the spray head 30 and the central hole of the support block form a ventilation ring groove together with the copper ring 31. The outer circle of the small end of the spray head 30 is uniformly provided with a plurality of ventilation small holes along the circumference, so that the protective gas in the ventilation ring groove directly reaches the reverse side area of the welding seam through the small holes, and the number of the ventilation small holes in the embodiment is 8. For easy assembly, the support block 14 is also provided with a square hole, the spray head 30 is arranged from one side of the square hole of the support block, and the square hole is matched with the positioning column 15 according to H7/g 6. When the support blocks are assembled, the square holes are sleeved into the positioning columns 15 in the positioning units, and then slide along the radial direction, so that the cylindrical sections of the positioning columns 15 are inserted into the central holes of the support blocks 14. The clearance is left between the center hole of the supporting block 14 and the cylindrical section of the positioning column 15, so that on one hand, the processing difficulty of the supporting unit can be reduced, and on the other hand, 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 accuracy is further influenced. And an air vent plate is arranged below the positioning plate and is communicated with the air vent threaded hole through an internal air vent pipeline.
A cone block 12 is arranged between the supporting unit and the supporting shaft 11, a corresponding cone surface is arranged on the supporting block 14 and is contacted with the cone block 12, and the cone block 12 is connected with the supporting shaft 11 through a nut. When the multi-handle nut 10 rotates during operation, the nut rotates downwards, and the cone block 12 pushes the supporting unit downwards to be outwards opened under the guidance of the positioning unit. Finally, the supporting unit outer ring copper ring 31 is attached to the welding area of the annular piece, the molded surface of the welding area of the annular piece is tightly supported, heat dissipation is enhanced in the heat affected zone of the welding seam, and the purpose of controlling the welding deformation of the annular piece is achieved.
The rotating unit controls the horizontal rotation and turnover of the workbench. The rotating platform is provided with a base 1, a turntable 3 on the base 1 is connected with the base 1 through a connecting shaft 21, and the turntable can rotate on the base. In the embodiment, steel balls 20 are uniformly distributed below the turntable 3 along a connecting shaft 21, a constraint frame is arranged in the base 1, the steel balls 20 are constrained by the retainer 2 to roll, the turntable 3 rotates and is subjected to rolling friction, and the movement resistance of the turntable 3 is reduced. One end of the turntable 3 is provided with an angular pin 4, and the base 1 is provided with a corresponding angular block 5 to form a limiting device. When the multi-handle nut 10 is pulled horizontally, the angular pin 4 is pressed back, the angular block 5 is detached for constraint, and the turntable 3 can rotate freely; after rotating 180 degrees, the angle pin 4 enters the angle block 5 at the opposite position, and the angle pin 4 ejects to limit the rotation of the turntable 3, so that the turntable 3 can keep stable and static at two opposite positions, and the horizontal steering of the part is realized. In other embodiments, the turntable and the base are connected to rotate by similar technical means such as sliding rails, for example, sliding rails and sliding grooves are arranged between the turntable and the base, and the turntable and the base can be mounted by conventional technical means.
The turnover assembly in the rotation unit is used for controlling the turnover 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 the two corresponding rotating shaft seats 22 through rotating shafts 27, the two rotating shaft seats 22 are fixed on two sides of the turntable 3, and the support plate 18 and the whole positioning mechanism are supported to turn around the axis of the rotating shaft 27. The connecting line of the axes 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 seat 28, the set screw 32 is fixed, and the other end of the rotating shaft 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 support plate 18 through a bushing, the top end of the supporting shaft is tightly pressed against the upper cover plate through the multi-handle nut 10 to tightly press the annular piece, the shoulder nut is arranged to prevent loosening, the multi-handle nut 10 is rotated, the handle drives the mandrel and the whole positioning mechanism to rotate, and circumferential positions of the parts are adjustable during welding. The nut is arranged at the bottom of the supporting shaft, so that the positioning unit is attached to the supporting plate 18 and keeps tightness, the supporting shaft 11 is blocked when rotating, and the supporting shaft can be stably and statically positioned at any angle position when welding and adjusting the angular position of the boss, so that an operator can weld conveniently. The supporting shaft 11 is hollow, and an air hole is arranged at the position of the ventilation plate and is communicated with a ventilation pipeline on the ventilation 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 the support plate 18 through the bolt 7 and the hook 8 to limit the overturning movement of the support plate 18. In order to facilitate the installation of the ring-shaped member, in this embodiment, a groove for installing the stop pin 16 is provided on the surface of the support plate 18, and when the ring-shaped member is installed, the stop pin 16 is installed in the support plate 18 first, and is matched with the fixed groove, so that the rotation of the positioning mechanism is limited, and when each nut is screwed in the installation process, the support shaft 11 will not rotate. After the ring is positioned and pressed, the stop pin 16 can be removed, and the positioning mechanism resumes free rotation. The base 1 is provided with the stop block 26, after the assembly of the parts is completed, the bolt 7 is pulled out, the multi-handle nut 10 is pulled, the whole supporting plate 18 bearing positioning mechanism is turned clockwise, when the supporting plate 18 collides with the stop block 26, the supporting plate 18 is vertical, the axis of the parts is kept horizontal, and the parts enter 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 turntable 3 through the support 17. When an operator pulls the multi-handle nut 10 clockwise to rotate around the rotating shaft, the support plate 18 turns over to compress the air spring 19, and the air spring 19 can provide a certain buffer to enable the positioning unit to stably fall. After the welding is finished, the handle is pulled anticlockwise, at the moment, the gas spring 19 returns, a certain reset required torque can be provided, the positioning unit is assisted to rotate, and the labor intensity of an operator is reduced. In this embodiment, the elastic torque generated by the air spring 19 in the final compressed state relative to the rotating shaft needs to be smaller than the gravitational torque generated by the parts and the positioning unit relative to the rotating shaft, otherwise, the support plate 18 cannot be turned to a vertical state, and the axes of the parts are inclined upwards and the state is unstable.
The gas circuit switching unit is connected to the supporting unit through the base and the connecting shaft and is provided with a ventilation pipeline for ventilating the welding surface with protective gas. The base 1 is provided with an inner hole for conveying protective gas, the surface of the base 1 is provided with a hose joint 33 connected with the inner hole, the hose joint 33 is connected with the flexible pipeline 23, and the other end of the flexible pipeline 23 is communicated with the central hole of the support shaft 11 through a pipe joint flange. 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 supporting shaft 11, gas enters the inner cavity of the supporting shaft 11 through the pipe joint, and the lower end face is provided with a sealing gasket and is tightly pressed 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 motionless, and the winding of the silica gel pipe at the bottom of the mandrel is avoided. The supporting shaft 11 is communicated with the vent holes of the vent plate, and gas enters the circulation channel of the supporting block through the inner holes, the flexible pipeline 23, the supporting shaft 11, the vent plate pipeline and the vent threads, and the 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 clamp for welding the annular piece with the circumferential boss, which comprises an installation process and a welding process. The specific steps of the installation process are as follows:
s1, checking the initial state of the clamp, whether the air spring 19 is reset, whether the support block combination is in a retreating state, whether the silica gel tube is completely airtight, and whether the movement of each rotating part is smooth;
s2, the bolt 7 passes through the hook 8 to prevent overturning, is installed into the stop pin 16, and limits the rotation of the positioning plate 29;
s3, mounting the annular piece on the positioning plate 29, screwing down the nut to tightly support the block combination, mounting the upper cover plate 9, and screwing down the multi-handle nut 10 and the shoulder nut to tightly press;
s4, removing the stop pin 16, rotating the handle, sequentially loading six bosses, and tightening the positioning screw 13 for compaction;
s5, switching on the protective gas.
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 enable the support plate 18 to rotate clockwise to be in a vertical state, and enabling the support plate 18 to be in contact with the stop block 26;
y2. rotating the handle, adjusting the angular position of the boss to be welded, and starting segmented welding;
y3. the upper half part is welded firstly, after the welding is finished, the spanner handle is pulled to horizontally rotate, the top spring angle retreats towards the pin 4, and the turntable 3 bears the integral rotation;
y4. the rotary table 3 rotates 180 degrees horizontally, and the elastic apex angle directional pin 4 is pressed into the V-shaped angular block 5 at the relative position for limiting;
y5. rotating the handle to make the lower half part of the boss to be welded upward, thereby completing welding;
y6. welding bosses sequentially according to the method;
after all the bosses Y7. are welded, the handle is turned over to reset, and the return of the gas spring 19 is assisted;
y8. support plate 18 resumes the horizontality, packs into the bolt 7 protection, packs into the stop pin 16 spacing, removes each nut in proper order, takes out the part.
According to the embodiment, the positioning fixture ensures the positioning accuracy of the annular part, the positioning part and the tightening, heat dissipation and ventilation protection part are mutually independent and do not influence each other, and the deformation of the part is effectively controlled on the premise of ensuring the quality of welding seams; the parts are turned over and rotated in multiple directions, so that welding efficiency is guaranteed, and labor intensity of manual turning is reduced.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (9)
1. The turnover fixture for welding the annular piece with the circumferential boss is characterized by comprising a positioning unit, a supporting unit, an air passage switching unit and a rotating unit;
the positioning unit comprises a positioning plate for centering the annular piece, positioning columns and positioning screws, the number of which is consistent with that of the bosses, are uniformly distributed on the positioning plate and used for positioning the bosses, an upper cover plate is arranged above the positioning plate, the annular piece is placed between the positioning plate and the upper cover plate, and the positioning plate is fixedly connected with the positioning columns;
the support unit is provided with a support block combination matched with the positioning column and used for supporting the molded surface during welding and radiating a welding area, the support block combination comprises a support block with a closed air passage at the periphery and a spray head communicated with the closed air passage and used for spraying air to the reverse side of the welding seam, and the support block is provided with a ventilation channel communicated with the closed air passage;
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 chassis by taking the connecting shaft as a center; the rotary table is provided with a turnover assembly for controlling the turnover of the positioning unit, the turnover assembly comprises a support plate arranged below the positioning unit, a rotating shaft seat arranged below the support plate and connected with the rotating shaft seat through a rotating shaft, the rotating shaft seat is fixed on the rotary table on the surface of the base, one end of the rotating shaft is in interference fit with the rotating shaft seat, the other end of the rotating shaft is in sliding friction with a lining of the rotating shaft seat, and the support plate can freely turn over through the rotating shaft; the rotating unit is also provided with a supporting shaft penetrating through the positioning mechanism and the support plate, the supporting shaft is in sliding friction with the support plate through a bushing, and the top end of the supporting shaft penetrates through and presses the upper cover plate;
the gas circuit 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 hollow supporting shaft inner cavity through a flexible pipeline; the inner cavity of the support shaft is communicated with the ventilation pipeline of the support unit through a channel.
2. The turnover fixture for welding annular parts with circumferential bosses according to claim 1, wherein the support block assembly comprises a support block, a copper ring, a spray head and a set screw, wherein the outer circular surface of the support block is provided with a transverse ventilation groove, the lower end surface of the support block is provided with a ventilation threaded hole, the central hole is connected with the ventilation threaded hole through the transverse ventilation groove on the surface of the support block, the copper ring and the support block are welded into a whole along the circumference, and the joint surface of the copper ring and the support block forms a closed gas circuit.
3. The turnover fixture for welding annular parts with circumferential bosses according to claim 2, wherein the surface of the spray head is provided with a step surface, one end of the spray head is in clearance fit with the copper ring, the other end of the spray head is in interference fit with the supporting block, and the spray head is fixed through a set screw; the shower nozzle step face, supporting shoe centre bore and copper ring constitute the annular that ventilates, the one end that is close to the copper ring on the shower nozzle is equipped with the aperture that ventilates.
4. The turnover fixture for welding annular parts with circumferential bosses of claim 3, wherein the small-diameter end of the spray head is in clearance fit with the copper ring, and the large-diameter end of the spray head is in interference fit with the supporting block, so that air tightness is ensured.
5. The turnover fixture for welding annular parts with circumferential bosses as claimed in claim 1, wherein a gas spring is installed under the support plate, and two ends of the gas spring are respectively connected with the support plate and the turntable.
6. The turnover fixture for welding annular parts with circumferential bosses as claimed in claim 1, wherein the turntable is provided with a support, and the support limits turnover movement of the support by being connected with one side of the support.
7. The flip clamp for welding a ring with a circumferential boss as claimed in claim 1, wherein the set screw is concentric with the boss, the boss bearing against the end face of the set post.
8. The turnover fixture for welding annular parts with circumferential bosses according to claim 1, wherein steel balls and a retainer for restraining rolling tracks of the steel balls are uniformly distributed around a connecting shaft between the turntable and the base, and the turntable rotates in a horizontal direction through rolling of the steel balls.
9. The turnover fixture for welding annular parts with circumferential bosses as claimed in 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 turntable through the support frame.
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 CN113828983A (en) | 2021-12-24 |
| CN113828983B true CN113828983B (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111166791.1A Active CN113828983B (en) | 2021-09-30 | 2021-09-30 | Overturning clamp for welding annular piece with circumferential boss |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| 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 |
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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 |
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| CN113828983A (en) | 2021-12-24 |
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