CN114227124A - Sheet metal welding jig - Google Patents
Sheet metal welding jig Download PDFInfo
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- CN114227124A CN114227124A CN202210002674.XA CN202210002674A CN114227124A CN 114227124 A CN114227124 A CN 114227124A CN 202210002674 A CN202210002674 A CN 202210002674A CN 114227124 A CN114227124 A CN 114227124A
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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
- B23K37/047—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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- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to the field of metal connection forming, in particular to a welding fixture for metal plates. The device comprises a base, a reinforcing rib plate, a clamping frame, a rocker arm, a circumferential positioning connecting piece, a clamping plate, a flat plate, a stepping motor, a slider-crank mechanism, a fixed shaft sleeve and the like. The base is the flat board, dull and stereotyped both ends are equipped with the deep floor of through-hole through welded mounting, the rocking arm passes through the round pin and installs epaxial, the hole on axle and the deep floor is clearance fit, circumference connecting piece passes through bolt and hub connection, circumference positioning connection spare about both ends respectively have equivalent circumference equipartition constant diameter blind hole, it has the same circumference equipartition constant diameter through-hole with circumference positioning connection spare left side to distribute on the left end deep floor lateral wall, the dull and stereotyped rotation that the rocking arm drove can realize the location of circumference through the locating rod, be equipped with the same circumference equipartition constant diameter through-hole with the connecting piece right-hand member on the splint, can realize the improvement of dull and stereotyped positioning accuracy through the reverse dull and stereotyped rotation of drive locating pin, dull and stereotyped and splint pass through bolted connection, left side welding plate is fixed on the flat board, right side welding plate is relative motion around left side welding plate, step motor and slider-crank mechanism fix on the flat board. The device disclosed by the invention is used for welding, butt welding of equal-thickness metal plates, butt welding of unequal-thickness metal plates and fillet welding of the metal plates are realized, the welding thermal deformation of the metal plates can be reduced by an inverse deformation method when the metal plates are butt welded, and the welding angle of the metal plates can be adjusted at will when the fillet welding is carried out.
Description
Technical Field
The invention relates to the field of metal connection forming, in particular to a metal plate welding clamp.
Background
The welding process of the metal plate is widely applied to various fields due to high production efficiency, wide adaptability and material saving, and plays an extremely important role in the production of metal structural members. On the one hand, welding work often needs hoist and mount the work piece repeatedly today, and inconvenient welding is tight, when welding the reverse side of work piece, need loosen the work piece earlier and overturn the work piece, and the welding is executed after the clamping of fixed position again, needs welding personnel manual operation in this operation process, not only increases intensity of labour, has reduced welding efficiency and has still influenced the quality of weldment. On the other hand, in the actual welding operation, metal plates with different thicknesses are welded, and how to control the thermal deformation of the weldment by using a mechanical linkage method and improve the dimensional accuracy of the weldment is very important.
The metal plate is influenced by thermophysical performance parameters (heat conduction coefficient, thermal expansion coefficient and the like) and thermodynamic performance parameters (yield strength, elastic modulus and the like), and the metal plate generates larger thermal deformation and residual stress due to local heating during welding, so that the dimensional accuracy and the bearing capacity of a weldment are reduced. The external restraint is a method for regulating and controlling welding deformation, and aiming at a weldment structural member, a clamping mechanism is reasonably designed to apply restraint so as to effectively control welding deformation. Although the rigid fixing method for restraining welding deformation through the welding tool clamping mechanism can effectively reduce deformation, the rigid fixing method has the defect that after the restraint is removed after welding, a weldment also has rebound deformation and larger residual stress, and the geometric precision and the mechanical property of the weldment are influenced. In welding operation, an inverse deformation method is usually adopted to reduce deformation resilience of a weldment, and the inverse deformation of a welding joint is counteracted with welding heat deformation during assembly, but a local cushion block method is mostly adopted for adjusting the inverse deformation amount, and the position and the height of the cushion block are difficult to adjust.
The fixture is a device for quickly, conveniently and safely installing workpieces in the process, is widely applied in the processes of machining and assembling, and the reasonable design and the correct application of the fixture are the keys for ensuring the correct execution of the welding process, ensuring the welding precision, improving the production efficiency and reducing the production cost. Generally, a set of tool clamp can only clamp a specific workpiece, and in the field of the existing tool clamp, the problems of inaccurate positioning, unstable clamping and inconvenient operation still exist in butt welding splicing of metal plates with different thicknesses and fillet welding of the plates with different included angles.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a welding jig for metal plates, which can perform butt welding of equal-thickness metal plates, butt welding of unequal-thickness metal plates, and fillet welding of metal plates, and can control welding deformation of metal plates by an inverse deformation method when butt welding is performed on metal plates, and the welding angle of metal plates can be arbitrarily adjusted when fillet welding is performed.
In order to achieve the purpose, the invention adopts the following technical scheme: a metal plate welding fixture comprises a weldment supporting module, a weldment anti-deformation control module, a weldment rotating and positioning module, a weldment clamping and fixing module and a weldment vertical positioning module. The weldment anti-deformation control module is connected to a base of the weldment supporting module through welding, the weldment rotating and positioning module is installed on a reinforcing rib plate of the weldment supporting module, the weldment clamping and fixing module is installed on a flat plate of the weldment rotating and positioning module through bolts, and the weldment vertical positioning module is installed on the flat plate of the weldment rotating and positioning module through bolts.
Furthermore, the weldment support module comprises a base and a reinforcing rib plate. The weldment anti-deformation control module comprises a sleeve, a lifting rod, a fixing nut, a clamping frame and a screw rod. The weldment rotation positioning module comprises a rocker arm, a shaft, a positioning rod, a handle, a circumferential positioning connecting piece, a rotation clamping plate, a positioning pin, a connecting piece and a flat plate. The weldment clamping and fixing module comprises a left welding plate, a right welding plate, a screw rod, a pressing plate and a connecting bolt. The weldment vertical positioning module comprises a crank, a connecting rod, a sliding block, an eccentric wheel, a stepping motor and a fixed shaft sleeve.
Further, in order to achieve the purpose, the base is a flat plate, and reinforcing rib plates are arranged at two ends of the base; the reinforcing rib plate is connected to the base through welding, and two holes with the same diameter are formed in the reinforcing rib plate and used for supporting and positioning the shaft and the connecting piece; the reinforcing rib plate is characterized in that the left end of the reinforcing rib plate is provided with 30 uniformly distributed equal-diameter through holes in the circumferential direction, and the small holes are circular and used for circumferential positioning of weldment.
Further, to achieve the above object, the sleeve is mounted on the base by welding; the outer diameter of the lifting rod is the same as the inner diameter of the sleeve, and a threaded hole is formed in the side wall of the lifting rod; both ends are hollow about the centre gripping frame, and centre gripping frame lower extreme is equipped with another lifter, and the upper end is equipped with a plurality of screw rods, and this lifter is used for the centre gripping frame to go up and down, and the screw rod is used for the tight location of clamp of welding, and this lifter upper end and centre gripping frame pass through welded connection, and the lifter lower extreme is equipped with the chamfer, sleeve and lifter and centre gripping frame constitute second grade elevating gear, wherein: the first level goes up and down for the lift between sleeve and the lifter, and the second level goes up and down for going up and down between lifter and the centre gripping frame, be equipped with in the sleeve with lifter assorted screw thread, through screw-thread fit between sleeve and the lifter, be clearance fit between lifter and the centre gripping frame, the centre gripping frame passes through fixation nut locking on the lifter lateral wall at the given position.
Further, in order to achieve the purpose, the rocker arm and the shaft are connected through a pin; the shaft is arranged on the reinforcing rib plate through the hole, and the shaft and the hole are in clearance fit; the circumferential positioning connecting piece is arranged on the shaft through a bolt; the left rotating clamping plate and the right rotating clamping plate are respectively arranged, the left rotating clamping plate realizes axial positioning through a circumferential positioning connecting piece, the right rotating clamping plate is fixedly connected onto the connecting piece through a bolt, the connecting piece is arranged on a right reinforcing rib plate and is in clearance fit with the holes, and the rotating clamping plates are provided with threaded holes for mounting and fixing a flat plate; the flat plates are provided with threaded holes matched with the rotary clamping plates and are arranged on the clamping plates through bolts, the front flat plate and the rear flat plate are respectively provided with a threaded hole used for installing a left welding plate, and the rear flat plate is provided with a threaded hole used for installing a stepping motor and a fixed shaft sleeve.
Further, in order to achieve the purpose, the left end of the circumferential positioning connecting piece is provided with 30 circumferentially and uniformly distributed equal-diameter blind holes which are consistent with the left end of the reinforcing rib plate, the angle between every two adjacent holes is 12 degrees, the right end of the circumferential positioning connecting piece is provided with 30 circumferentially and uniformly distributed equal-diameter blind holes, and the blind holes are provided with rectangular grooves; the left end rotary clamping plate is provided with 30-number of circumferentially uniformly distributed equal-diameter through holes which are consistent with the right end of the circumferential positioning connecting piece; the shape of the positioning rod is similar to that of a small hole at the left end of the reinforcing rib plate and is circular, and the handle is connected with the positioning rod through welding; the locating pin is equipped with the rectangle boss, and the rectangle boss is clearance fit with the rectangle recess in the left end rotating splint aperture, and the locating pin shape is similar with the aperture of left end rotating splint, hand (hold) and locating pin pass through welded connection.
Further, in order to achieve the purpose, the small hole at the right end and the small hole at the left end of the circumferential positioning connecting piece are provided with angle dislocation, and the dislocation angle is 6 degrees.
Furthermore, in order to achieve the purpose, the left end rotating clamp plate and the right end rotating clamp plate are axially positioned through the circumferential positioning connecting piece, the right end rotating clamp plate is fixedly installed on the connecting piece, the lowest point of the rotating clamp plate during rotating motion is located on the welding piece anti-deformation control module, and a gap is reserved between the rotating clamp plate so that the welding piece anti-deformation control module can move up and down to avoid mechanical interference.
Furthermore, in order to achieve the purpose, the left welding plate is provided with a threaded hole matched with the flat plate, the left welding plate is fixedly installed on the flat plate through a bolt, one end of the left welding plate is provided with a threaded hole used for connecting the right welding plate, and a through hole is formed in a lower bottom plate at the other end of the left welding plate and used for vertical movement of the sliding block; the right welding plate is arranged on the flat plate, one end of the right welding plate is provided with a threaded hole matched with the left welding plate, the left welding plate and the right welding plate are connected together through a connecting bolt, and the right welding plate can move around the left welding plate relatively; the upper bottom plate of the left and right welding plates is provided with a screw, the small end of the screw is provided with a pressing plate for increasing the welding positioning connection area, and the pressing plate is circular and is connected with the screw in a welding way.
Furthermore, in order to achieve the purpose, the stepping motor runs at a low speed, every time a pulse signal is input, the stepping motor moves forward, the stepping motor has no accumulated error, the structure is simple, and the accurate positioning of the vertical movement of the sliding block can be realized; the eccentric wheel is arranged on a shaft of the stepping motor through a positioning pin; the crank and the eccentric wheel are connected together; the connecting rod is connected with the crank; the connecting rod is constrained to move in the vertical direction through the fixed shaft sleeve, and the length of the connecting rod is 1.5 times of that of the crank; the sliding block is connected to the connecting rod through welding; the stepping motor drives the crank connecting rod to move, so that the sliding block moves up and down along a direction perpendicular to the through hole of the left welding plate, and the vertical positioning of a butt welding piece is realized; the stepping motor and the fixed shaft sleeve are provided with threaded holes matched with the rear flat plate, and the stepping motor and the fixed shaft sleeve are fixedly arranged on the rear flat plate through bolts.
Preferably, the surfaces that are in contact with the weldment are provided with rubber or cork to protect the surfaces of the weldment.
Preferably, the different components are installed by bolt fixing connection or welding connection, and a gasket is used between the bolt and the connected piece to protect the surface of the connected piece.
Preferably, the welding fixture is made of high-strength alloy steel, so that the weight of the fixture body can be reduced, and the fixture is convenient to move.
Preferably, the connection mode between the welding clamp parts is welding or bolt connection, and the threads are left-handed threads.
Preferably, compared with the related art, the metal plate welding fixture provided by the invention has the following beneficial effects:
1. according to the welding fixture, the indexing positioning device is adopted, the weldment is driven to rotate slowly through arm rotation, the work that the reverse side welding can be carried out only by disassembling, overturning and clamping the workpiece is avoided, the whole-circle rotation of the welded part is realized, the labor amount of welding personnel is reduced, and the welding production efficiency is improved; and the rotation of the flat plate adopts a forward and reverse rotation angle offset method, namely, the rocker arm drives the weldment to rotate, the positioning rod is used for realizing the first circumferential positioning of the weldment, and the positioning pin drives the weldment to rotate in the opposite direction to realize the second circumferential positioning of the butt welding part, so that the positioning precision of the turnover motion of the flat plate is 6 degrees, the positioning precision of the rotation motion of the weldment is improved, and the multi-position welding of the weldment can be realized.
2. The invention relates to a butt welding reversible deformation welding device, which is used for carrying out butt welding work, the height of a lifting rod is adjusted to realize the positioning of a butt welding piece and the control of the thermal deformation by a reversible deformation method, the deformation in the opposite direction is preset before welding to be offset with the deformation after welding, the welding deformation and the residual stress of a metal plate can be reduced, and the structural performance and the dimensional precision of the welding piece are improved.
3. The invention relates to an angle rotation control device, which is used for fillet welding, wherein a left welding plate is fixed on a flat plate in a matched mode through a bolt, the position of a right welding plate is adjusted by controlling the tightness of a connecting thread, so that the right welding plate rotates around the left welding plate relatively, the angle between the left welding plate and the right welding plate can be adjusted at will, and two flat plates with different included angles can be welded.
4. The invention relates to a welding device for fillet welding of unequal-thickness metal plates.
5. The invention has the advantages of simple structure, convenient installation, low cost, convenient clamping and dismounting of welding parts, time saving and labor saving.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged partial view a of the module for rotational positioning of the weldment according to the invention.
Fig. 3 is a partially enlarged view B of the present invention about the threaded connection of the left welding plate and the right welding plate.
Fig. 4 is an enlarged partial view C of the module of the present invention positioned vertically with respect to the weldment.
Fig. 5 is a partial cross-sectional view of the present invention.
Fig. 6 is a partially enlarged view of the present invention, which is a partially enlarged view at a in fig. 5.
FIG. 7 is a schematic view of the left end structure of the circumferential positioning connector of the present invention.
FIG. 8 is a schematic diagram of the right end structure of the circumferential positioning connector of the present invention.
Fig. 9 is a schematic structural view of the rotating splint of the present invention.
Fig. 10 is a schematic structural view of a left welding plate according to the present invention.
FIG. 11 is a schematic view of the positioning rod of the present invention.
FIG. 12 is a schematic view of the construction of the locating pin of the present invention.
In the figure: the welding device comprises a base 11, a reinforcing rib plate 12, a sleeve 21, a lifting rod 22, a fixing nut 23, a clamping frame 24, a screw rod 25, a rocker arm 31, a shaft 32, a positioning rod 33, a handle 34, a circumferential positioning connecting piece 35, a rotating clamping plate 36, a positioning pin 37, a connecting piece 38, a flat plate 39, a right welding plate 41, a left welding plate 42, a screw rod 43, a pressure plate 44, a connecting bolt 45, a washer 46, a crank 51, a connecting rod 52, a sliding block 53, an eccentric wheel 54, a stepping motor 55 and a fixing shaft sleeve 56.
Detailed Description
The following detailed description of the present invention will be described in conjunction with the accompanying drawings and detailed description, which are provided to illustrate the present invention and not to limit the scope of the present invention.
Referring to fig. 1 to 12, the present invention provides a metal plate welding fixture, which mainly comprises a weldment supporting module, a weldment anti-deformation control module, a weldment rotation positioning module, a weldment clamping and fixing module, and a weldment vertical positioning module.
The weldment supporting module is composed of a horizontal bottom plate 11 and two side reinforcing rib plates 12, the two side reinforcing rib plates 12 of the fixture body are provided with equal-diameter through holes for supporting a shaft 32 and a connecting piece 38, and the left side reinforcing rib plate 12 is provided with equal-diameter through holes which are uniformly distributed on the circumference and are used for positioning a flat plate 39 by a positioning rod 33 in a rotating motion.
The weldment rotation positioning module comprises a rocker arm 31, a shaft 32, a positioning rod 33, a handle 34, a circumferential positioning connecting piece 35, a rotating clamping plate 36, a positioning pin 37, a connecting piece 38 and a flat plate 39. The swing arm 31 is manually controlled, so that the plate 39 can be rotated, the left end of the circumferential positioning connecting piece 35 is provided with circumferentially uniformly distributed equal-diameter blind holes which are consistent with those on the left reinforcing rib plate 12, the right end of the circumferential positioning connecting piece 35 is provided with 30 circumferentially uniformly distributed equal-diameter blind holes, and the blind holes are provided with rectangular grooves; the left end rotary clamping plate 36 is provided with 30-number of circumferentially uniformly distributed equal-diameter through holes which are consistent with the right end of the circumferential positioning connecting piece 35; the connecting piece 38 is in clearance fit with the right reinforcing rib plate 12, and the right rotary clamping plate 36 is connected with the connecting piece 38 through a bolt.
The weldment clamping and fixing module comprises a left welding plate 42, a right welding plate 41, a screw 43 and a pressing plate 44. The left welding plate 42 is fixed on the flat plate 39 through bolts, the right welding plate 41 and the left welding plate 42 are connected through a connecting bolt 45, the right welding plate 41 can move around the left welding plate 42 relatively to achieve fillet welding of two flat plates at different included angles, and the screw 43 is connected with the pressing plate 44 through welding.
The weldment reversible deformation control module comprises a sleeve 21, a lifting rod 22, a fixing nut 23, a clamping frame 24 and a screw 25. The sleeve 21 is installed on the base 11 through welding, the lifting rod 22 is in threaded fit with the sleeve 21, the clamping frame 24 can be fixed on the side wall of the lifting rod 22 through the fixing nut 23, the height of the lifting rod 22 and the clamping frame 24 can be controlled to change the position height of a weldment in the vertical direction, deformation in the opposite direction is preset by welding personnel and is offset with deformation after welding, thermal deformation and residual stress of the weldment can be reduced, and therefore performance and size accuracy of a welding structure are improved.
The weldment vertical positioning module comprises a crank 51, a connecting rod 52, a sliding block 53, an eccentric wheel 54, a stepping motor 55 and a fixed shaft sleeve 56. The stepping motor 55 and the fixed bushing 56 are mounted on the plate 39 by bolts, the eccentric 54 and the stepping motor 55 are connected by pins, and the link rod 52 is kept in a vertical direction by the fixed bushing 56.
The use method of the invention is as follows with the attached drawings:
during butt welding, the weldment is placed on the left welding plate 42 and the right welding plate 41, the welder estimates the deformation of the weldment according to welding experience, adjusts the lifting rod 22 to change the position of the clamping frame 24, rotates the screw 25 to position the weldment in the vertical direction, so that the reverse deformation of the metal flat plate is accurately preset, and then rotates the screw 43 to clamp and fix the weldment. At this point the weld is ready and welding can begin. During welding, the deformation generated by the welding seam is offset with the preset anti-deformation before welding, so that the welding deformation and the residual stress are reduced, and the performance and the size precision of a welding structure are improved.
When the reverse side is welded, the screw rod 25 is unscrewed, the positioning of the clamping frame 24 on the welding piece is released, the lifting rod 22 is lowered, the clamping frame 24 is moved leftwards or rightwards to be taken down, the positioning rod 33 is taken out of the circumferential positioning connecting piece 35, 180-degree overturning of the flat plate 39 is realized by rotating the rocker arm 31, the positioning rod 33 penetrates through the through hole of the reinforcing rib plate 12 to be matched with the blind hole of the circumferential positioning connecting piece 35, the position of the overturned flat plate 39 is positioned, and at the moment, a welding person operates a welding gun to realize the reverse side welding of the welding piece. When the flat plate 39 is positioned at any position on the circumference, the flat plate 39 is driven to rotate by an angle theta through the rotating rocker arm 311The positioning rod 33 is used for circumferential positioning, then the positioning pin 37 is disengaged from the circumferential positioning connecting piece 35, the positioning pin 37 is rotated reversely to drive the flat plate 39 to rotate by another angle theta 2, the forward and reverse rotation angles of the flat plate 39 are offset, and the precision of circumferential motion positioning is improved. The welding process does not need to disassemble the weldment, reduces the labor amount of welding personnel, improves the production efficiency, ensures the welding reliability because the position of the welding seam does not change, improves the quality of the welding seam, and can rotate the flat plate 39 at different angles, thereby realizing the all-position displacement welding of the weldment.
When the unequal-thickness metal plates are welded, a weldment is fixed on the right welding plate 41, the eccentric wheel 54 is driven to rotate through the stepping motor 55, the eccentric wheel 54 drives the crank 51 to move, the crank 51 drives the connecting rod 52 to move, the connecting rod 52 drives the sliding block 53 to move to a target height in the vertical direction, the position of the sliding block 53 is kept unchanged after the power supply of the stepping motor 55 is cut off, the other weldment is placed on the sliding block 53, the lifting rod 22 is adjusted to enable the clamping frame 24 to ascend to the position where the weldment personnel experience presets inverse deformation, and welding of the unequal-thickness metal plates can be achieved through the mode of controlling welding thermal deformation through inverse deformation. The stepping motor 55 has excellent control precision, and the accuracy of the welding position of the metal plates with different thicknesses is ensured by using the stepping motor 55.
During fillet welding, connecting bolt 45 is unscrewed, a weldment is placed on left welding plate 42 firstly, screw 43 on left welding plate 42 is rotated to realize positioning and clamping of the weldment, right welding plate 41 is rotated to reach a target angle position, connecting bolt 45 is screwed tightly to realize position fixing of right welding plate 41, another weldment is placed on right welding plate 41, screw 43 on right welding plate 41 is rotated to realize position fixing of the weldment, then rocker arm 31 is rotated to enable the welding seam of the weldment to rotate to a horizontal position parallel to the base, positioning rod 33 is used for positioning the rotated position, and welding personnel can operate a welding gun to realize welding of the weldment at different angles.
The above description is only a preferred embodiment of the present invention, and is not limited to the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a sheet metal welding jig which characterized in that: the device comprises a weldment supporting module, a weldment anti-deformation control module, a weldment rotating and positioning module, a weldment clamping and fixing module and a weldment vertical positioning module. The weldment anti-deformation control module is fixedly connected to a base of the weldment supporting module, the weldment rotating and positioning module is installed on a reinforcing rib plate of the weldment supporting module, the weldment clamping and fixing module is fixed to a flat plate of the weldment rotating and positioning module, and the weldment vertical positioning module is fixedly installed on the flat plate of the weldment rotating and positioning module.
2. The sheet metal welding fixture of claim 1, wherein the weldment support module comprises a base and a stiffener plate. The base is a flat plate, and reinforcing rib plates are arranged at two ends of the base; the reinforcing rib plate is connected to the base through welding, and two holes with the same diameter are formed in the reinforcing rib plate and used for supporting and positioning the shaft and the connecting piece; the reinforcing rib plate is characterized in that the left end of the reinforcing rib plate is provided with 30 uniformly distributed equal-diameter through holes in the circumferential direction, and the small holes are circular and used for circumferential positioning of the welding device.
3. The metal plate welding fixture of claim 1, wherein the weldment predeformation control module comprises a sleeve, a lifting rod, a fixing nut, a clamping frame and a screw. The sleeve is installed on the base through welding; the outer diameter of the lifting rod is the same as the inner diameter of the sleeve, and a threaded hole is formed in the side wall of the lifting rod; the left end and the right end of the clamping frame are hollow, the lower end of the clamping frame is provided with another lifting rod, the upper end of the clamping frame is provided with a plurality of screw rods, the upper end of the lifting rod is connected with the clamping frame in a welding mode, and the lower end of the lifting rod is provided with a chamfer; sleeve and lifter and centre gripping frame constitute second grade elevating gear, wherein: the first level goes up and down for the lift between sleeve and the lifter, and the second level goes up and down for going up and down between lifter and the centre gripping frame, be equipped with in the sleeve with lifter assorted screw thread, through screw-thread fit between sleeve and the lifter, be clearance fit between lifter and the centre gripping frame, the centre gripping frame passes through fixation nut locking on the lifter lateral wall at the given position.
4. The sheet metal welding fixture of claim 1, wherein the weldment rotation positioning module comprises a rocker arm, a shaft, a positioning rod, a handle, a circumferential positioning connecting piece, a rotation clamping plate, a positioning pin, a connecting piece and a flat plate, and the rocker arm and the shaft are connected by a pin; the shaft is arranged on the reinforcing rib plate through the hole, and the matching of the shaft and the hole is clearance fit; the circumferential positioning connecting piece is arranged on the shaft through a bolt; the left rotating clamping plate and the right rotating clamping plate are respectively arranged, the left rotating clamping plate realizes axial positioning through a circumferential positioning connecting piece, the right rotating clamping plate is fixedly connected onto the connecting piece through a bolt, the connecting piece is arranged on a right reinforcing rib plate and is in clearance fit with the holes, and the rotating clamping plates are provided with threaded holes for mounting and fixing a flat plate; the flat plates are provided with threaded holes matched with the rotary clamping plates and are arranged on the clamping plates through bolts, the front flat plate and the rear flat plate are respectively provided with a threaded hole used for installing a left welding plate, and the rear flat plate is provided with a threaded hole used for installing a stepping motor and a fixed shaft sleeve.
5. The metal plate welding fixture of claim 1, wherein the weldment rotation positioning module comprises a rocker arm, a shaft, a positioning rod, a circumferential positioning connecting piece, a rotating clamping plate, a positioning pin, a connecting piece and a flat plate, wherein the left end of the circumferential positioning connecting piece is provided with 30 circumferentially uniformly distributed equal-diameter blind holes which are consistent with the left end of the reinforcing rib plate, the angle between two adjacent holes is 12 degrees, the right end of the circumferential positioning connecting piece is provided with 30 circumferentially uniformly distributed equal-diameter blind holes, and the blind holes are provided with rectangular grooves; the right-end small hole and the left-end small hole are staggered at an angle which is 6 degrees compared with half of the angle of the two adjacent left-end small holes; the left end rotary clamping plate is provided with 30-number of circumferentially uniformly distributed equal-diameter through holes which are consistent with the right end of the circumferential positioning connecting piece; the shape of the positioning rod is similar to that of a small hole at the left end of the reinforcing rib plate and is circular, and the handle is connected with the positioning rod through welding; the locating pin is equipped with the rectangle boss, and the rectangle boss is clearance fit with the rectangle recess in the left end rotating splint aperture, and the locating pin shape is similar with the aperture of left end rotating splint, hand (hold) and locating pin pass through welded connection.
6. The metal plate welding fixture as claimed in claim 1, wherein the weldment clamping module comprises a left welding plate, a right welding plate, a screw, a pressing plate and a connecting bolt, the left welding plate is provided with a threaded hole matched with the flat plate, the left welding plate is fixedly mounted on the flat plate through the bolt, one end of the left welding plate is provided with a threaded hole used for connecting the right welding plate, and a through hole is formed in a lower bottom plate at the other end of the left welding plate and used for movement of the sliding block in the vertical direction; the right welding plate is arranged on the flat plate, one end of the right welding plate is provided with a threaded hole matched with the left welding plate, the left welding plate and the right welding plate are connected together through a bolt, and the right welding plate can move around the left welding plate relatively; the upper bottom plate of the left and right welding plates is provided with a screw, the small end of the screw is provided with a pressing plate for increasing the welding positioning connection area, and the pressing plate is circular and is connected with the screw in a welding way.
7. The metal plate welding fixture as recited in claim 1, wherein the weldment vertical positioning module comprises a crank, a connecting rod, a sliding block, an eccentric wheel and a stepping motor, the stepping motor runs at a low speed, the stepping motor advances one step when a pulse signal is input, the stepping motor has no accumulated error, the structure is simple, and the accurate positioning of the vertical movement of the sliding block can be realized; the eccentric wheel is arranged on a shaft of the stepping motor through a positioning pin; the crank and the eccentric wheel are connected together; the connecting rod is connected with the crank; the connecting rod is constrained to move in the vertical direction through the fixed shaft sleeve, and the length of the connecting rod is 1.5 times of that of the crank; the sliding block is connected to the connecting rod through welding; the stepping motor drives the crank connecting rod to move, so that the sliding block moves up and down along a direction perpendicular to the through hole of the left welding plate, and the vertical positioning of a butt welding piece is realized; the stepping motor and the fixed shaft sleeve are provided with threaded holes matched with the rear flat plate, and the stepping motor and the fixed shaft sleeve are fixedly arranged on the rear flat plate through bolts.
8. The sheet metal welding jig of claim 1, wherein the threaded connections between all of the parts are left-handed threads.
9. A sheet metal welding jig according to claim 1, wherein the accuracy of the full circumferential movement of the weldment is 6 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002674.XA CN114227124A (en) | 2022-01-04 | 2022-01-04 | Sheet metal welding jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210002674.XA CN114227124A (en) | 2022-01-04 | 2022-01-04 | Sheet metal welding jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114227124A true CN114227124A (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210002674.XA Pending CN114227124A (en) | 2022-01-04 | 2022-01-04 | Sheet metal welding jig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115958285A (en) * | 2023-01-09 | 2023-04-14 | 北京理工大学 | Ultrasonic welding tool fixture and using method thereof |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115958285A (en) * | 2023-01-09 | 2023-04-14 | 北京理工大学 | Ultrasonic welding tool fixture and using method thereof |
| CN115958285B (en) * | 2023-01-09 | 2024-06-25 | 北京理工大学 | Ultrasonic welding fixture and application method thereof |
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