CN217799561U - Friction stir welding flexible welding test fixture - Google Patents
Friction stir welding flexible welding test fixture Download PDFInfo
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- CN217799561U CN217799561U CN202221662508.4U CN202221662508U CN217799561U CN 217799561 U CN217799561 U CN 217799561U CN 202221662508 U CN202221662508 U CN 202221662508U CN 217799561 U CN217799561 U CN 217799561U
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Abstract
A friction stir welding flexible weld test fixture, comprising: the device comprises a base plate, two compression plates and at least two compression blocks; the base plate is a rectangular steel plate, one side of the long edge is provided with a step, the middle part of the step is provided with a positioning groove, and the base plate steps at the two sides of the positioning groove are respectively provided with two screw holes which are bilaterally symmetrical by taking the center line of the positioning groove as a center line and comprise a first screw hole and a second screw hole; third screw holes are respectively arranged on the base plate in a left-right symmetry mode according to the center line of the positioning groove; the two pressing plates are symmetrically arranged on two sides of the base plate positioning groove and are rectangular, and the middle part of the outer side edge of the long side is concave inwards to form a rectangular groove; the two ends of the pressing plate are provided with first waist-shaped holes which are connected to the base plate steps through bolts; at least two pressing blocks are symmetrically arranged on two sides of the rectangular grooves of the two pressing plates, and a countersunk strip-shaped hole is formed in the center of the rectangular groove along the length direction and is connected with the substrate through a bolt. The utility model discloses satisfy multiple joint form and welding sheet material size changeable friction stir welding test requirement in the certain limit, realize firm location and the fastening to welding sheet material and joint.
Description
Technical Field
The utility model relates to a frock clamp field, in particular to friction stir welding flexible weld test fixture.
Background
The friction stir welding is a solid phase welding technology and is widely applied to the fields of aerospace, automobile manufacturing and the like. In the friction stir welding process, the stirring head stirs the workpiece violently, the workpiece needs to be rigidly fixed, and the supporting and clamping mechanism is required to have higher rigidity. In the process test stage of product and material development, in order to verify the reasonability of the structure or the weldability of the material and obtain welding conditions such as proper welding process parameters, friction stir welding tests are often required to be carried out on various joints of various materials. Typical friction stir weld joints are in the form of butt joints, lap joints, butt and lap combination joints, lockdown joints, T-joints, and the like. In the test stage, the friction stir welding process test workload of the joint of each product or material is not large, so that the joint form is frequently changed, and therefore, a test fixture which is convenient to disassemble and assemble, can adapt to various friction stir welding joint forms, can adapt to various sizes of plates, is simple and reliable and has low cost is needed.
Generally, most friction stir welding test fixtures use a clamp to clamp the plate along the thickness direction, but the clamp cannot reliably fix the plate in the welding process, and a large gap is formed at the joint of the plate in the welding process, so that a welding seam is defective, the performance of the welding joint is reduced, and the welding joint deviates from the expected test requirements. And most friction stir welding test fixtures only compress tightly the plate through a rigid pressing plate and fix the three moving directions of the plate, and although the fixture can reliably clamp the plate and ensure stable welding, the adaptive joint form is single, and the size of the welded plate is fixed.
Disclosure of Invention
An object of the utility model is to design a friction stir welding flexible weld test fixture, satisfy multiple joint form and welding sheet material size changeable friction stir welding test requirement in the certain limit to realize firm location and the fastening to welding sheet material and joint through optimal design, provide great whole rigidity, realize simultaneously that it trades the convenient tearing open of flexible test fixture, and low cost.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a friction stir welding flexible weld test fixture, comprising: the device comprises a base plate, two compression plates and at least two compression blocks; wherein the content of the first and second substances,
the substrate is a rectangular steel plate, one side of the long edge of the substrate is provided with a step along the length direction, the height of the step is 2-5 mm, the middle part of the step is provided with a positioning groove, and the bottom of the positioning groove is flush with the top surface of the substrate; four corners of the base plate are provided with fixing screw holes; the two screw holes are symmetrically arranged on the two sides of the base plate steps on the two sides of the positioning groove by taking the center line of the positioning groove as a center line, wherein a pair of first screw holes close to the positioning groove and a pair of second screw holes far away from the positioning groove are formed;
a plurality of third screw holes are symmetrically arranged on the left and right of the substrate by taking the positioning groove as a central line to form a screw hole rectangular array;
the two pressing plates are symmetrically arranged on two sides of the base plate positioning groove, the pressing plates are rectangular, and the middle parts of the outer side edges of the long sides of the pressing plates are recessed inwards to form a rectangular groove; the two ends of the pressure plate are provided with first waist-shaped holes which are connected with a first screw hole or a second screw hole on the step of the base plate through bolts; preferably, a locking screw hole is formed in the middle of the compression plate;
the at least two pressing blocks are symmetrically arranged on two sides of the rectangular grooves of the two pressing plates, and a strip-shaped hole with a countersunk head is formed in the center of each pressing block along the length direction and is connected to the base plate through a bolt; one side of the bottom of the pressing block is provided with a limiting groove for pressing materials.
Preferably, the upper part of one side surface of the pressing plate close to the positioning groove is an inclined surface.
Preferably, the top surface of the substrate is provided with 6 rows of screw holes along the length direction of the substrate, and 3 columns of screw holes along the width direction of the substrate to form a rectangular array of screw holes. Preferably, 4 rows and 2 columns of rectangular arrays of screw holes with the same size and spacing are further nested in the center position of the rectangular array of screw holes.
Preferably, the side surface of the base plate at the side where the step positioning groove is arranged is provided with scale marks which are bilaterally symmetrical by taking the center line of the positioning groove as the center.
The utility model also designs a flexible welding test fixture for friction stir welding, which comprises a base plate, two T-shaped joint compression plates and at least two compression blocks; wherein, the first and the second end of the pipe are connected with each other,
the substrate is a rectangular steel plate, one side of the long edge of the substrate is provided with a step along the length direction, the height of the step is 2-5 mm, the middle part of the step is provided with a positioning groove, and the bottom of the positioning groove is flush with the top surface of the substrate; four corners of the base plate 1 are provided with fixing screw holes; the two screw holes are symmetrically arranged on the two sides of the base plate steps on the two sides of the positioning groove by taking the center line of the positioning groove as a center line, wherein a pair of first screw holes close to the positioning groove and a pair of second screw holes far away from the positioning groove are formed;
a plurality of third screw holes are symmetrically arranged on the left and right of the substrate by taking the positioning groove as a central line to form a screw hole rectangular array;
the two T-shaped joint pressing plates are symmetrically arranged on two sides of the substrate positioning groove; this T shape connects pressure strip includes:
the bottom plate is symmetrically provided with second waist-shaped holes, and the bottom plate penetrates through the second waist-shaped holes through bolts to be fixed on the base plate;
the side plate is vertically arranged at one side end of the bottom plate;
the top plate is horizontally arranged on the side plate, and one side end surface of the top plate is flush with the side plate; two connecting screw holes are symmetrically arranged on the top plate; preferably, a stopping step is arranged on the upper end surface of the top plate close to one side end of the step of the substrate along the length direction;
the supporting plate is arranged between the bottom plate and the top plate;
the side plates of the two T-shaped joint pressing plates are positioned on two sides in the base plate positioning groove, and a gap capable of clamping the T-shaped joint is kept;
the at least two pressing blocks are symmetrically arranged on the top plates of the two T-shaped joint pressing plates, and a strip-shaped hole with a countersunk head is formed in the center of each pressing block along the length direction and is connected to the top plates through bolts; one side of the bottom of the pressing block is provided with a limiting groove for pressing.
Preferably, bolt connecting lug blocks are convexly arranged at two ends of the side plate of the T-shaped joint pressing plate.
Preferably, the supporting plate is two mutually perpendicular steel plates, and forms an isosceles right triangle with the side plate of the T-shaped joint pressing plate.
Preferably, the top surface of the base plate is provided with 6 rows of screw holes along the length direction of the base plate, 3 rows of screw holes are arranged along the width direction of the base plate to form a screw hole rectangular array, and preferably, 4 rows and 2 rows of screw hole rectangular arrays with the same size and spacing are further nested in the center position of the screw hole rectangular array.
Such a nested array of screw holes is arranged for the hold-down blocks to flexibly select the fastening location for positioning and fastening the welding slabs according to the specific size and location of the welding slabs.
Preferably, the side surface of the base plate at the side where the step positioning groove is arranged is provided with scale marks which are bilaterally symmetrical by taking the center line of the positioning groove as the center. The scale mark is used for accurately determining the distance of a welding plate joint face, a pressing plate and a T-shaped joint pressing plate from deviating from the central line of the groove, and is also used for determining the distance of a stirring head from deviating from the central line of the groove so as to adapt to different welding conditions.
Preferably, a locking screw hole is formed in the middle of the pressing plate and used for installing an inner hexagonal jacking bolt, and the plate is further pressed and welded through the bolt to prevent the plate from moving.
The T-shaped joint pressing plate is used for positioning and fastening the welding plate material into a T-shaped welding joint.
The bottom plate of the T-shaped joint pressure strip is provided with two waist-shaped holes, the direction of the waist-shaped holes is along the length direction of the base plate and corresponds to the screw holes of the base plate, and the waist-shaped holes are used for positioning and fixing the T-shaped joint pressure strip. Two waist-shaped holes of the bottom plate of the T-shaped joint pressure strip can flexibly adjust the positions of the waist-shaped holes and the base plate screw holes according to the thickness of a plate.
Preferably, the top plate of the pressing plate of the T-shaped joint is a rectangular steel plate, one side close to the step of the base plate is provided with a stop step, and the height of the stop step is 2-3 mm and is used for limiting the movement of the welding plate along the welding direction. The top plate of the pressing plate of the T-shaped joint is provided with two screw holes for fastening and welding the plate material through the pressing block when the bolt is screwed down.
Preferably, bolt through holes are formed in the bolt connecting lug block on one side of the T-shaped joint pressure plate side plate, screw holes are formed in the other side of the T-shaped joint pressure plate side plate, and the two pairs of holes are screwed through bolts to enable the T-shaped joint pressure plate to clamp and weld plates so as to prevent movement.
The supporting plate is composed of two steel plates which are perpendicular to each other, and forms an isosceles right triangle with the side plate of the T-shaped joint pressing plate, so that the overall rigidity of the clamp of the whole T-shaped joint pressing plate in the friction stir welding process is guaranteed.
The pressing block is a cuboid steel block, a waist-shaped hole with a countersunk head is formed in the length direction, and the waist-shaped hole is used for installing the hexagon socket head cap screw. The compression block is positioned and fastened through axial pressure when the inner hexagonal bolt is screwed with the corresponding screw hole. The front part of the upper surface of the pressing block is provided with a larger chamfer angle, so that the pressing block is wedge-shaped, and the other three edges are provided with small chamfer angles. The front part of the plane at the bottom of the pressing block is provided with a sunken step for propping and pressing the edge of the welding sheet, so that the welding sheet is prevented from moving in the welding process.
And a step is arranged on one side of the long edge of the substrate along the length direction and used for limiting the welding plate to move along the welding direction during friction stir welding. A positioning groove is formed in the middle of the step and used for completely welding the whole joint surface during friction stir welding, and the stirring head does not collide with the substrate. The two screw holes are symmetrically arranged on the left and right of the base plate steps on the two sides of the positioning groove by taking the center line of the positioning groove as the center line, wherein a pair of first screw holes close to the positioning groove and a pair of second screw holes far away from the positioning groove are matched with the pressing plate, the distance between the screw holes and the center line of the positioning groove can be adjusted, so that the flexible adaptability adjustable base plate is suitable for stirring heads of different models and specifications and welding plates of different thicknesses and sizes, and becomes one of the characteristics for obtaining flexible adaptability.
The base plate is provided with a plurality of third screw holes which are bilaterally symmetrical by taking the positioning groove as a central line to form a screw hole rectangular array, and the screw hole nested array is used for flexibly selecting a fastening position of the pressing block according to the specific size and position of the welding plate material to position and fasten the welding plate material so as to adapt to the welding plate materials with different sizes and widths.
The middle of the outer side edge of the long side of the pressing plate is concave inwards to form a rectangular groove, and the pressing block can press the plate materials even when the width of the welded plate materials is narrow, so that the plate materials are prevented from moving along the length direction of the base plate during welding. First waist shape hole is established at the pressure strip both ends, through bolted connection in first screw or second screw on the base plate step, waist shape hole makes the pressure strip can follow base plate length direction and adjusts, and the distance between flexible change and the base plate positioning groove central line adapts to the not unidimensional shaft shoulder diameter of the wide welding sheet material of different length and stirring head.
The bottom plate of the T-shaped joint pressing plate is provided with a second waist-shaped hole for positioning and fixing the T-shaped joint pressing plate, and the position of the waist-shaped hole is adjusted according to the thickness of a welding vertical plate, so that flexible adaptation to welding plates with different thicknesses is realized.
The T-shaped joint pressure strip side plate is used for supporting and fixing a vertical plate of a T-shaped joint, bolt connecting lug blocks are arranged at the front end and the rear end of the side plate, the two T-shaped joint pressure strips are fastened with each other through bolts, and a step is arranged between the bolt connecting lug block close to one side of the step of the base plate and the vertical plate of the T-shaped joint and used for limiting a welding plate to move along the welding direction.
And one side of the top plate of the T-shaped joint pressing plate, which is close to the base plate step, is provided with a stopping step for limiting the movement of the welding plate along the welding direction. Two threaded holes are formed in the top plate of the T-shaped joint pressing plate and used for fastening and welding the plate through the pressing block when the bolt is screwed down. The threaded hole is matched with the bolt and the pressing block to realize movable adjustment of the pressing block in a certain range in the length direction of the substrate, so that the pressing block is suitable for different widths of welding plates.
The length direction of the pressing block is provided with a countersunk waist-shaped hole which is matched with the hexagon socket head cap screw and the threaded hole, so that the pressing block has the characteristic of flexible adjustment along the length direction of the waist-shaped hole, and plates with different sizes can be fixed.
The utility model has the advantages of:
friction stir welding flexible test anchor clamps can connect the welding of form to the difference for realizing friction stir welding, through changing the pressure strip on the base plate, can connect the pressure strip for T shape and realize friction stir welding to the T shape and connect the welding. The change process between pressure strip and the T shape joint pressure strip is simple convenient, through the dismouting bolt can. The design realizes butt joint, lap joint and friction stir welding of the T-shaped joints of the plates, meets the requirements of welding plate size and joint form diversity in the welding test process, and also obtains the switching requirements of low cost, high reliability and convenience.
Drawings
Fig. 1 is a perspective view of a first embodiment of the present invention;
fig. 2 is an exploded perspective view of a first embodiment of the present invention;
fig. 3 is a perspective view of a second embodiment of the present invention;
fig. 4 is a perspective view of a third embodiment of the present invention;
fig. 5 is a top view of a third embodiment of the present invention;
fig. 6 is an exploded perspective view of a third embodiment of the present invention 1;
fig. 7 is an exploded perspective view of a third embodiment of the present invention 2.
Detailed Description
Referring to fig. 1 and fig. 2, the friction stir welding flexible welding test fixture of the present invention comprises: the device comprises a base plate 1, two compression plates 2, 2 'and at least two compression blocks 3, 3'; wherein the content of the first and second substances,
the base plate 1 is a rectangular steel plate, one side of the long side of the base plate 1 is provided with a step 11 along the length direction, the height is 2-5 mm, the middle part of the step 11 is provided with a positioning groove 111, and the bottom of the positioning groove 111 is flush with the plane of the base plate 1; four corners of the base plate 1 are provided with fixing screw holes; the steps 11 of the substrate 1 at two sides of the positioning groove 111 are respectively provided with two screw holes in bilateral symmetry by taking the center line of the positioning groove 111 as a center line, wherein a pair of first screw holes 101 close to the positioning groove 111 and a pair of second screw holes 102 far away from the positioning groove 111 are provided;
a plurality of third screw holes 103 are symmetrically arranged on the substrate 1 left and right by taking the positioning groove 11 as a central line to form a screw hole rectangular array;
the two pressing plates 2 and 2' are symmetrically arranged at two sides of the positioning groove 111 of the substrate 1, the pressing plate 2 (taking the pressing plate 2 as an example, the same below) is rectangular, and the middle part of the outer side edge of the long side of the pressing plate is concave inwards to form a rectangular groove 21; two ends of the pressure plate 2 are provided with first waist-shaped holes 22 which are connected with a first screw hole 101 or a second screw hole 102 on the step 11 of the base plate 1 through bolts 4;
the at least two pressing blocks 3 and 3' are symmetrically arranged at two sides of the rectangular grooves of the two pressing plates 2 and 2', and a strip-shaped hole 31 with a countersunk head is arranged at the center of the pressing block 3 (taking the pressing block 3 as an example, the same below) along the length direction and is connected to the substrate 1 through a bolt 4 '; a limiting groove 32 for material pressing is arranged on one side of the bottom of the pressing block 3.
Preferably, the upper part of one side surface of the pressing plate close to the positioning groove is an inclined surface.
Preferably, 6 rows of screw holes 103 are arranged on the plane of the base plate 1 along the length direction of the base plate 11, 3 columns of screw holes 103 are arranged along the width direction of the base plate to form a screw hole rectangular array, and preferably, 4 rows and 2 columns of screw hole rectangular arrays with the same size and spacing are further nested at the center position of the screw hole rectangular array.
Preferably, the side surface of the substrate 1 on the side where the step positioning groove 111 is formed is provided with scale marks 12 which are bilaterally symmetrical about the center line of the positioning groove 111.
Referring to fig. 4 to 7, the present invention further provides a flexible welding test fixture for friction stir welding, which comprises a base plate 1, two T-shaped joint pressure pads 5, 5', and at least two pressure pads 3, 3'; wherein, the first and the second end of the pipe are connected with each other,
the base plate 1 is a rectangular steel plate, one side of the long side of the base plate 1 is provided with a step 11 along the length direction, the height is 2-5 mm, the middle part of the step 11 is provided with a positioning groove 111, and the bottom of the positioning groove 111 is flush with the plane of the base plate 1; four corners of the base plate 1 are provided with fixing screw holes; the steps 11 of the substrate 1 at two sides of the positioning groove 111 are respectively provided with two screw holes in bilateral symmetry by taking the center line of the positioning groove 111 as a center line, wherein a pair of first screw holes 101 close to the positioning groove 111 and a pair of second screw holes 102 far away from the positioning groove 111 are provided;
a plurality of third screw holes 103 are symmetrically arranged on the substrate 1 left and right by taking the positioning groove 111 as a central line to form a screw hole rectangular array;
the two T-shaped joint pressing plates 5 and 5' are symmetrically arranged on two sides of the positioning groove 111 of the substrate 1; the T-joint pressing plate 5 (taking the T-joint pressing plate 5 as an example, the same applies below) includes:
the bottom plate 51 is symmetrically provided with second waist-shaped holes 511, and the bottom plate is fixed on the substrate 1 by passing through the second waist-shaped holes 511 through bolts;
a side plate 52 vertically disposed at one side end of the bottom plate 51;
a top plate 53 horizontally disposed on the side plate 52, one side end surface of which is flush with the side plate 52; the top plate 53 is symmetrically provided with two connecting screw holes 531;
a support plate 54 provided between the bottom plate 51 and the top plate 53;
the side plates 52 of the two T-shaped joint pressing plates 5 are positioned at two sides in the positioning groove 111 of the base plate 1 and keep a gap capable of clamping the T-shaped joint;
the at least two pressing blocks 3 and 3' are symmetrically arranged at two sides of the rectangular grooves of the two pressing plates 2 and 2', and a strip-shaped hole 31 with a countersunk head is arranged at the center of the pressing block 3 (taking the pressing block 3 as an example, the same below) along the length direction and is connected to the substrate 1 through a bolt 4 '; a limiting groove 32 for material pressing is arranged on one side of the bottom of the pressing block 3.
Preferably, two ends of the side plate 52 of the T-shaped joint pressure plate 5 are convexly provided with bolt connecting lug blocks 521; a stop step 532 is formed on the upper end surface of the top plate 53 near one end of the step 11 of the base plate 1 along the length direction.
Preferably, the supporting plate 54 is two steel plates perpendicular to each other, and forms an isosceles right triangle with the T-shaped joint pressing plate side plate 52.
Preferably, the top surface of the base plate is provided with 6 rows of screw holes along the length direction of the base plate, 3 rows of screw holes are arranged along the width direction of the base plate to form a screw hole rectangular array, and preferably, 4 rows and 2 rows of screw hole rectangular arrays with the same size and spacing are further nested in the center position of the screw hole rectangular array.
Preferably, the side surface of the base plate at the side where the step positioning groove is arranged is provided with scale marks which are bilaterally symmetrical by taking the center line of the positioning groove as the center.
And (3) splicing the two welding plates 100 by friction stir welding to form a butt joint, wherein the length of the welding plates 100 is 80-140 mm, the width is 50-100 mm, and the thickness is 2-6 mm, and in order to obtain the friction stir welding butt joint, the two welding plates 100 are arranged on the substrate 1 and are symmetrically distributed by taking the central line of the positioning groove as the central line. The tail end of the welding plate material is abutted against the step of the base plate 1, and the movement of the welding plate material along the width direction of the base plate is limited. And a pressing plate is added to press the welding plate 100, and the distance between the wedge-shaped opening of the pressing plate and the central line of the base positioning groove is adjusted by utilizing the waist-shaped hole. The width between the pressure plates is adjusted according to the welding stirring head, so that a cutter collision is avoided in the welding process, and meanwhile, the welding plate can be fastened without moving or deforming greatly.
And the lap joint is formed by lap joint friction stir welding, the welding plates are lap jointed in the central line area of the base plate positioning groove, and one of the pressing plates is butted with the welding plates in order to limit the movement of the upper plates. And butting a welding plate material which is the same as the bottom welding plate material with the bottom plate material to support the upper plate material, wherein the upper plate material of the stirring head is overlapped with the bottom plate material in a superposed region during welding. Such tests were used to obtain lap joints for friction stir seam welding and friction stir spot welding lap joints.
Preferably, after the welding plate material is compressed, the pressing block is used for pressing the welding plate material at the position where the pressing plate is exposed, and the welding plate material is limited to move along the length direction of the base plate. The pressing block is screwed with the base plate through the hexagon socket head cap screw, and meanwhile, the pressing plate is flexibly positioned and pressed on welding plates with different widths by utilizing the characteristic that the waist-shaped hole of the pressing block can be adjusted back and forth.
Referring to fig. 3, when a larger size welding plate (length 140-300 mm, width 100-150 mm, thickness 6-15 mm) is to be welded for test, the pressing plates 2, 2' with large size are used for pressing and fixing, and are symmetrically distributed with the center line of the positioning groove of the substrate 1 as the center line. The tail end of the welding plate 100 props against the step of the substrate 1 and is limited to move along the width direction of the substrate; and pressing plates 2 and 2' are added to press the welding plate 100, the welding plate 100 is pressed by screwing bolts, and the distance between the wedge-shaped opening of the pressing plate and the center line of the positioning groove of the base plate is adjusted by utilizing the waist-shaped hole. The width between the pressing plates is adjusted according to the welding stirring head, so that a welding plate can be fastened without colliding a cutter in the welding process, and the phenomenon of movement and large deformation is avoided.
In order to better fasten the welding plate material with large size, the middle of the pressing plates 2 and 2' is provided with a screw hole for the bolt to prop against the welding plate material when the bolt is screwed down, so that the middle part is prevented from moving due to small pressing force.
Referring to fig. 4, when a welded plate material is welded to a T-shaped joint 200, T-shaped joint pressing plates 5 and 5 'and pressing blocks 3 and 3' are installed on the substrate 1. The vertical plate of the T-shaped joint 200 is arranged in the middle of the central line of the positioning groove of the base plate 1 by using the scale mark of the base plate 1, the distance from the T-shaped joint pressure plate to the central line of the positioning groove of the base plate is flexibly adjusted by using the waist-shaped holes of the T-shaped joint pressure plates 5 and 5', the vertical plate of the T-shaped joint 200 is fixed, the thickness of various plate materials is adapted, and the T-shaped joint pressure plate is fixed by screwing bolts.
The vertical plate of the T-shaped joint 200 is limited to move along the width direction of the base plate through the step on the vertical plate of the T-shaped joint, meanwhile, bolt connecting lug blocks of side plates of the pressing plates 5 and 5' of the T-shaped joint are screwed up through bolts, and the vertical plate of the T-shaped joint 200 is pressed through the axial pressure of the bolts, so that the welding plate-T-shaped joint 200 is kept stable and reliable in the welding process.
The horizontal plate of the T-shaped joint 200 is horizontally placed on the top plate of the pressing plate of the T-shaped joint and forms an angle of 90 degrees with the vertical plate of the T-shaped joint 200, the horizontal plate of the T-shaped joint abuts against the stopping step of the top plate of the T-shaped joint to limit the movement in the direction, and the horizontal plate is positioned and fastened through the pressing blocks 3 and 3'. Waist-shaped holes of the pressing blocks 3 and 3' correspond to screw holes in the top plate of the T-shaped joint pressing plate, and the pressing blocks 3 and 3' are flexibly pressed by utilizing the characteristic that the distance in the length direction of the waist-shaped holes can be adjusted by the waist-shaped holes of the pressing blocks 3 and 3' so as to adapt to different widths of the horizontal plates of the T-shaped joint 200.
During friction stir welding, the stirring head pricks into the horizontal plate from the position close to the edge of the horizontal plate and right above the vertical plate, the horizontal plate is welded thoroughly, and welding is carried out by taking the central line direction of the base plate positioning groove as the welding direction, so that the T-shaped joint 200 is formed.
Claims (14)
1. A flexible welding test fixture for friction stir welding is characterized by comprising a base plate, two compression plates and at least two compression blocks; wherein, the first and the second end of the pipe are connected with each other,
the base plate is a rectangular steel plate, one side of the long edge of the base plate is provided with a step along the length direction, the height of the step is 2-5 mm, the middle part of the step is provided with a positioning groove, and the bottom of the positioning groove is flush with the top surface of the base plate; four corners of the base plate are provided with fixing screw holes; the two screw holes are symmetrically arranged on the two sides of the base plate steps on the two sides of the positioning groove by taking the center line of the positioning groove as a center line, wherein a pair of first screw holes close to the positioning groove and a pair of second screw holes far away from the positioning groove are formed;
a plurality of third screw holes are symmetrically arranged on the left and right of the substrate by taking the positioning groove as a central line to form a screw hole rectangular array;
the two pressing plates are symmetrically arranged on two sides of the base plate positioning groove, the pressing plates are rectangular, and the middle parts of the outer side edges of the long sides of the pressing plates are recessed inwards to form a rectangular groove; the two ends of the pressure plate are provided with first waist-shaped holes which are connected with a first screw hole or a second screw hole on the step of the base plate through bolts;
the at least two pressing blocks are symmetrically arranged on two sides of the rectangular grooves of the two pressing plates, and a strip-shaped hole with a countersunk head is formed in the center of each pressing block along the length direction and is connected to the base plate through a bolt; one side of the bottom of the pressing block is provided with a limiting groove for pressing.
2. The friction stir welding compliance weld test fixture of claim 1, wherein the upper portion of the pressure strip proximate to a side of the positioning groove is beveled.
3. The friction stir welding flexible weld test fixture of claim 1, wherein the top surface of the base plate has 6 rows of threaded holes along the length of the base plate and 3 columns of threaded holes along the width of the base plate, forming a rectangular array of threaded holes.
4. The flexible welding test fixture of friction stir welding according to claim 1, wherein the top surface of the substrate is provided with 6 rows of screw holes along the length direction of the substrate and 3 columns of screw holes along the width direction of the substrate to form a rectangular array of screw holes, and further, 4 rows and 2 columns of rectangular arrays of screw holes with the same size and spacing are nested in the center position of the rectangular array of screw holes.
5. The test fixture for friction stir welding flexible welding according to claim 1, 3 or 4, wherein the side surface of the base plate at the position of the step positioning groove is symmetrically provided with scale marks in left and right directions by taking the center line of the positioning groove as a center.
6. The friction stir welding flexible weld test fixture of claim 1 or 2, wherein the compression plate is provided with a screw hole at a middle position.
7. The friction stir welding flexible weld test fixture of claim 1 or 2, wherein the compression plate is provided with a locking screw hole at a middle position.
8. A flexible welding test fixture for friction stir welding is characterized by comprising a base plate, two T-shaped joint compression plates and at least two compression blocks; wherein the content of the first and second substances,
the substrate is a rectangular steel plate, one side of the long edge of the substrate is provided with a step along the length direction, the height of the step is 2-5 mm, the middle part of the step is provided with a positioning groove, and the bottom of the positioning groove is flush with the top surface of the substrate; four corners of the base plate are provided with fixing screw holes; the two screw holes are symmetrically formed in the two sides of the base plate steps on the two sides of the positioning groove in the bilateral direction by taking the center line of the positioning groove as a center line, wherein the pair of first screw holes close to the positioning groove is a pair of second screw holes far away from the positioning groove;
a plurality of third screw holes are symmetrically arranged on the left and right of the substrate by taking the positioning groove as a central line to form a screw hole rectangular array;
the two T-shaped joint pressing plates are symmetrically arranged on two sides of the substrate positioning groove; this T shape connects pressure strip includes:
the bottom plate is symmetrically provided with second waist-shaped holes and fixed on the base plate by penetrating through the second waist-shaped holes through bolts;
the side plate is vertically arranged at one side end of the bottom plate;
the top plate is horizontally arranged on the side plate, and one side end surface of the top plate is flush with the side plate; two connecting screw holes are symmetrically arranged on the top plate;
the supporting plate is arranged between the bottom plate and the top plate;
the side plates of the two T-shaped joint pressing plates are positioned on two sides in the base plate positioning groove, and a gap capable of clamping the T-shaped joint is kept;
the at least two pressing blocks are symmetrically arranged on the top plates of the two T-shaped joint pressing plates, and a strip-shaped hole with a countersunk head is formed in the center of each pressing block along the length direction and is connected to the top plates through bolts; one side of the bottom of the pressing block is provided with a limiting groove for pressing.
9. The friction stir welding flexible weld test fixture of claim 8, wherein bolt connection lugs are arranged at two ends of the side plate of the T-shaped joint pressing plate in a protruding mode.
10. The friction stir welding flexibility welding test fixture of claim 8, characterized in that the support plate is two perpendicular steel plates, and forms an isosceles right triangle with the side plate of the T-shaped joint pressing plate.
11. The friction stir welding flexible weld test fixture of claim 8, wherein the top surface of the base plate has 6 rows of threaded holes along the length of the base plate and 3 columns of threaded holes along the width of the base plate, forming a rectangular array of threaded holes.
12. The jig for friction stir welding flexible welding tests according to claim 8, wherein the top surface of the base plate is provided with 6 rows of the screw holes along the length direction of the base plate, 3 columns of the screw holes along the width direction of the base plate to form a rectangular array of the screw holes, and 4 rows and 2 columns of the rectangular array of the screw holes with the same size and spacing are further nested in the center position of the rectangular array of the screw holes.
13. The jig for testing friction stir welding flexibility as defined in claim 8, wherein the side surface of the base plate on the side where the stepped positioning groove is provided with scale marks in bilateral symmetry centered on the center line of the positioning groove.
14. The flexible welding test fixture of claim 8, wherein a stop step is provided along the length direction on the upper end surface of the top plate near the end of the step of the base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221662508.4U CN217799561U (en) | 2022-06-29 | 2022-06-29 | Friction stir welding flexible welding test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221662508.4U CN217799561U (en) | 2022-06-29 | 2022-06-29 | Friction stir welding flexible welding test fixture |
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| Publication Number | Publication Date |
|---|---|
| CN217799561U true CN217799561U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221662508.4U Active CN217799561U (en) | 2022-06-29 | 2022-06-29 | Friction stir welding flexible welding test fixture |
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| Country | Link |
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| CN (1) | CN217799561U (en) |
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2022
- 2022-06-29 CN CN202221662508.4U patent/CN217799561U/en active Active
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