Such as figure 1 As shown, a welding apparatus of a screw chassis includes a tool fixture 101, a triaxic displacement machine 102, and a welding robot 103, and the tooling jig 101 is disposed on the output of the triaxial displacement machine 102, a three-axis On one side of the displacement machine 102 is provided welding robot 103. The tool fixture 101 is used to position and press the underwater workpiece to be welded. The triaxial displacement machine 102 is used to displace the tool fixture 101. Welding robot 103 is used to weld the chassis workpiece. The output end of the triaxial displacement machine 102 can be at least left and right, left and right flip, and the rotation within the horizontal plane.
 Preferably, the welding robot 103 includes a welding robot, walking slide, traveling motor, gear, and rack. There are two soldering robots, both of the two soldering robots are provided on the walking slide, and the rails are traveling along the lateral direction. Each side of each welding robot is provided with a walking motor, and the output of the traveling motor is set to gears, the gear is engaged with the rack, and the rack is arranged in parallel with the travel sliding track. The tool fixture 101 has two groups, which are disposed on a three-axis displacement machine 102, respectively. The above structure facilitates the upper and lower materials of the chassis, facilitates improving the efficiency of welding.
 Such as Figure 10 to 11 As shown, a triaxial displacement machine includes a base 1021, a slider 1022, a slide driving device 1023, and a two-axis displacement machine body 1024. The slide 1022 is disposed on the base 1021 along the lateral slide, and the slide driving device 1023 is connected to the slide driving device 1023, and the slider driving device 1023 drives the slider 1022 slid on the base 1021. Two-axis displacement machine body 1024 is provided on the slide 1022.
 Such as Figure 12 to 14 As shown, the two-axis displacement machine body 1024 includes a left bracket 10241, a right bracket 10242, a flip body 10243, a flip driving motor 10244, a rotary body 10245, a rotary drive motor 10246, and a table 10247. The left bracket 10241 and the right bracket 10242 are respectively fixed to the left and right sides of the end surface of the slide plate 1022, respectively. The left and right ends of the flip body 10243 are respectively provided with the left connecting shaft 102432, the left connecting shaft 102432, the left connecting shaft 102431, and the right connection shaft 102432, respectively, and the left connecting shaft 1024311 and the right reinforcing rib 1024311 and the right reinforcing rib 1024321. The left connecting shaft 102431 and the right connecting shaft 102432 are respectively rotated on the left bracket 10241 and the right bracket 10242. The flip drive motor 10244 is disposed on the right bracket 10242, and the flip drive motor 10244 output is connected to the right connection shaft 102432. The turning body 10243 is provided with a rotary body 10245, and the rotation axis of the rotary body 10245 is perpendicular to the flip axis of the flip body 10243. The rotary drive motor 10246 is fixed to the flip body 10243, and the output terminal of the rotary drive motor 10246 is connected to the rotary body 10245, and drive the rotary body 10245 to rotate. The top portion of the rotary body 10245 is fixedly disposed on the table 10247.
 Such as Figure 12 As shown, the left connecting shaft 102431 is disposed on the left bracket 10241 through the bearing. The output of the flip drive motor 10244 is provided with a first speed reducer 102441, and the outer end of the right connection shaft 102432 is provided with a speed reducer forwarding plate 102442 between the first speed reducer 102441.
 Such as Figure 13 And as shown in 15 to 17, the flip body 10243 is a cylindrical shape, and the bottom surface of the flip body 10243 is provided with an upward-projection connection table 102433, and a through hole 102433 is provided. The rotary drive motor 10246 is fixedly mounted at the bottom of the connecting table 102433, and the output of the swivel drive motor 10246 is connected to the through hole and is connected to the bottom of the rotary body 10245. A second speed reducer 102461 is also provided between the rotary drive motor 10246 and the rotary body 10245. The rotary body 10245 is a cylindrical shape, and the rotary body 10245 is located inside the flip body 10243.
 The outer portion of the lower side of the rotary body 10245 is provided with a rotary body shroud 102451, and the lower end of the rotary body shroud 102451 is located at the top of the connecting table 102433, and the revolving body shield 102451 closes the area between the rotary body 10245 and the connecting table 102433.
 Such as Figure 18 As shown in the side surface of the flip body 10243, a conductive block 102434 is provided, and the bottom surface of the table 10247 is provided with a conductive disk 102471 that is in contact with the conductive block 102434. Conductor block 102434 includes a pad 1024341, a conductive sheet 1024342, a steel ring 1024343, a copper sheet 1024344, a screw 1024345, a spring 1024346, a guide post 1024347, and copper block 1024348. The block 1024341 is fixedly disposed on the side surface of the flip body 10243, and the top portion of the pad 1024341 is fixedly mounting the conductive plate 1024342, and one end of the conductive sheet 1024342 extends outward. The upper portion of the conductive sheet 1024342 is provided with a steel ring 1024343, and the steel ring 1024343 is a laterally disposed ring shape. A layer of copper sheet 1024344 is provided on the upper and lower sides of the steel ring 1024343, and the copper sheet 1024344 is fixedly connected by screw 1024345 and the pad 1024341, the upper copper sheet 1024344 is connected to a copper block 1024348 by screw 1024345, copper block 1024348 located in a steel ring The top of 1024343, and copper block 1024348 contacts the bottom of the conductive disk 102471. A spring 1024346 is provided between the two corresponding screws 1024345. The copper block 1024348 is provided with a guide post 1024347 between the pads 1024341.
 Such as Figure 13 and 15 As shown, the conductive disk 102471 is provided with a conductive disk shroud 1024711, and the inner side of the conductive disk shroud 1024711 is fixedly mounted on the side of the flip body 10243.
 Such as Figure 14 As shown, the lower portion of the table 10247 is provided with the same table bench shroud 102472 of the working table 10247. On one side of the workbench shield 102472, a tag 1024721 is provided, and the tuning body 10243 is provided with a tag 1024721. The corresponding indicator 102435 is convenient to determine the angle of rotation of the rotary body 10245.
 Such as Figure 13 and Figure 15 As shown, the side surface of the rotary body 10245 is provided with an opening, and an inner portion of the rotary body 10245 is provided with a lateral gear rod 102452, and the outer end of the lever 102452 extends from the opening. A height of the connecting block 102436 corresponding to the lever 102452 is provided on the inner wall of the flip body 10243, and the connecting block 102436 can block the rotation of the barrier 102452 horizontal direction.
 Such as Figure 11 As shown, the skateboard driving device 1023 includes a rod assembly 10231 and a screw motor 10232, a rod assembly 10231, and a rod assembly 10231, the output of the rod assembly 10231 is connected to the bottom of the slide 1022, and the screw motor 10232 drives the rod assembly 10231.
 Two slides 10211 are provided on the upper part of the base 1021, and the slide driving device 1023 is located inside the two rail 10211. A slider is provided on the rail 10211, and the slider 1022 is fixedly disposed on the slider through the slide support base 10221. One end of the slide 1022 is connected by the towline connecting plate 10222 with a towline 10223. Above the slide driving device 1023, a protective cover 1025 is provided above the slide rail 10211.
 The displacement machine is usually used with the welding device, and when the displacement is used, the workpiece to be welded is first applied to the table 10247, and then adjusts the position of the slide 1022 on the base 1021 by the slide driving device 1023, initially adjusting the position of the workpiece position. Further, the inclination angle of the flip body 10243 is adjusted by the flip driving motor 10244, and the rotary drive motor 10246 adjusts the rotation angle of the rotary body 10245, and further adjusts the position of the workpiece, so that the position of the workpiece is always welded.
 The apparatus has the advantage of having three degrees of freedom, facilitating the position of the workpiece, facilitating welding, effectively avoiding the production of welding angles. The skateboard 1022 can be stopped at any position of the base 1021, which is advantageous for the upper and lower materials of the workpiece, and improves production efficiency.
 Such as figure 2 and 3 As shown, a screw machine chassis welding tool fixture includes a bottom plate and a support frame 1 mounted on the bottom plate, a side sticker 2, a left side level assembly 3, and the right side is flattened assembly 4. The front and rear connecting plate pressing assembly 5, left and right connecting plate pressing assembly 6, right side connecting plate pressing assembly 7, the corner transition plate positioning assembly 8 and the corner transition plate clamping assembly 9. The middle portion of the bottom plate is provided with a support frame 1, and there is a positioning area of the side postal edge 2, the inner portion of the plurality of side postal edge block 2, and the upper and lower left and right directions of the support frame 1 form a positioning area. On the left side of the positioning area, the left side edge assembly 3 is set, and the right side of the positioning area is set to the right side level assembly 4, and the front and rear sides of the positioning area are set, and the corresponding front and rear connecting plate pressing assembly 5, the positioning area The middle of the side is disposed in the middle of the side. The right side of the positioning area is also provided with the right connection plate pressing assembly 7. The corner transition plate clamp assembly 9 is provided on the four corners of the positioning area, and the corner transition plate positioning assembly 8 is located on the bottom plate.
 The screw chassis includes a large bottom plate 11, the left side 12, the right side 13, the rear side side 14, the front side side 15, the corner transition plate 16, the front and rear connecting plate 17, the left and right connecting plate 18 and the right side connecting plate 19 . The large bottom plate 11 is flat on the support frame 1, the left side 12, the right side 13, the rear side side 14 and the front side 15 are formed into a rectangle and placed on the edge of the upper plate 11, four of the above-described rectangles. The corner crossing plate 16 is provided on the corner. The rear side 14 and the front side 15 are provided with two pieces of front and rear connecting plates 17 in the front-rear direction, and there is a left and right connecting plate 18 in the left-right direction between the two pieces of front and rear connecting plates 17. A right side connecting plate 19 is also provided between the front and rear connecting plates 17 and the right side 13 13.
 Such as figure 2 and Figure 4 As shown, the side bonding block 2 is provided with a vertical positioning plane toward the side of the positioning area, facilitating the preliminary positioning of the four sides.
 Such as Figure 8As shown in the left side of platen assembly 3 comprises a first longitudinal cylinder 31, a first connecting plate 32, left side clamps 33, 34 the first transverse cylinder platen 35 and left sides. A first longitudinal cylinder 31 longitudinally disposed upwardly, and the first output terminal of the longitudinal cylinder 31 is provided a first connecting plate 32, 33 provided on the left side a first connecting plate 32 compacts, the compact left side 33 of the positioning region above. A first cylinder provided on the lateral left side lateral clamps 3334, the output of the first transverse cylinder 34 is positioned toward the inner side region, left side and the platen 35 is provided on the output terminal, an end portion of the pressure plate 35 toward the left side positioning the left area. Preferably, the left side flattening assembly has two sets of 3, and uniformly distributed on the left side 12, to further ensure the effect.
 When the left side platen assembly 3 is operated, the first cylinder 31 drives the left side longitudinal clamps 33 is moved downward, left side 33 clamps against the upper end face 12 of the left side, the left side of the pressing 12 on a large base plate 11, left side 12 to ensure close contact over a large base plate 11. A first lateral left side cylinder 34 drives the platen 35 is moved leftward, left side 35 from the left side of the right side of the platen 12 is pressed against the left side 12, 12 to ensure that the left edge of the bottom plate 11 and the large flush left side ensure the welding quality.
 Such as Figure 4 As shown in the right side of platen assembly 4 comprises a second longitudinal cylinder 41, a second link plate 42, the right side clamps 43, 44 and the second transverse cylinder right side platen 45. The second longitudinal cylinder 41 longitudinally disposed upwardly, and the output of the second cylinder 41 is provided a second longitudinal web 42, second web 42 is provided on the right side of the compact 43, compact 43 located in the right side of the positioning region above. Laterally disposed left side clamps 44 on the second transverse cylinder 43, a second output terminal 44 of the cylinder laterally inward location area, and the platen 45 is provided on the right side of the output terminal, an end portion of the pressure plate 45 toward the right side right positioning region.
 Flattening assembly operation right side and the left side edge of the flattened assembly 4 about 3 symmetry.
 Such as Image 6 , The front and rear connecting plate 5 comprises a third longitudinal compression cylinder assembly 51, the third connecting board 52, the third transverse cylinder 53, the front and rear sides of the platen 54 and the front and rear connecting plates 55 compression blocks. Third longitudinal vertical cylinder 51 disposed upward, and the output of the third cylinder 51 is disposed along the longitudinal direction of the third transverse web 52, web 52 is set to the third front-rear direction, and an inner end located within the location area. End of the line on the third connecting board 52 is provided in the location area of the third lateral direction transverse cylinder 53, the piston rod 53 of the third lateral cylinder toward the corresponding side, is provided on the front side of the transverse rod of the third cylinder 53, platen 54. The third web 52 is located on the end of the line in the location area is also provided with at least two longitudinal webs compression block 55, two webs before and after the compression block 55 is positioned below the lower end of the third lateral cylinder 53, and the lower end is provided with a longitudinal groove 551 pressed webs, longitudinal webs for pressing groove 551 cooperate with the front and rear left and right sides of the web.
 When the web 5 before and after clamping assembly operation, the third air cylinder 51 drives the third longitudinal web 52 is moved downwardly, so that the compression blocks 55 before and after the web is pressed against the front web 17, while the longitudinal groove 551 pressed web around, and on both sides of the connecting plate 17 cooperate to ensure accurate location of the front and rear connecting plates 17. And third transverse drive cylinder 53 moves the front and rear sides of the platen 54 corresponding to the front edge 15 or 14 toward the rear side, and the side toward the corresponding side block welt 2, so that the large side of the base plate 11 edge alignment.
 Such as Figure 4 and 5 As shown in the left and right coupling plate pressing assembly 6 comprises a fourth longitudinal cylinder 61, plate 62 and the fourth clamping jaws 63 around the connecting plate. Fourth longitudinal vertical cylinder 61 arranged upward, the output of the fourth cylinder 61 is disposed along the longitudinal direction of the fourth lateral plate 62, the end of the fourth plate 62 extends toward the center of the positioning region, a fourth plate 62 is provided on the number of the web corresponding to the left and right about 63 webs clamping jaws, clamping jaws 63 around the connecting plate comprises at least a pair of front left and right connection plates disposed along the opposing compression block 631, the left and right lower pressing block connecting plate 631 left and right connection plates provided compression grooves 6311, about 6311 grooves for pressing webs cooperate with the left and right front and rear sides of the web.
 When the web pressing assembly 6 about the operation, the right and left fourth longitudinal cylinder 61 is moved downward link plate clamping jaws 63, so that the clamping jaws around the connecting plate 63 clamped around the connecting plate 18, while the left and right connecting plate housing slot 6311 and right and left sides of the connecting plate 18 is fitted, the position of the connecting plate 18 to ensure the accuracy of the left and right.
 Such as Figure 4 and Figure 8 As shown in the right coupling plate assembly 7 comprises a fifth longitudinal compression cylinder 71, the fifth link plate 72, the right side clamps 73, fifth transverse cylinder 74, the pressure plate 75 and the right side of the right web compression blocks 76. A fifth longitudinal vertical cylinder 71 arranged upward, the fifth output terminal of the longitudinal cylinder 71 is provided a fifth link plate 72, the fifth link plate 72 is provided on the right side of the compact 73, positioned above the right side region of the compact 73 . Fifth transverse cylinder disposed transversely on the right side clamps 7374, the output of the fifth lateral positioning cylinder 74 toward the inside area, and the platen 75 is provided on the right side of the output terminal, the right side end of the platen 75 portion to the right side of the positioning region. Right side clamps 73 side is provided with a pair of opposed right side coupling plate disposed along the longitudinal compression block 76, pressing the right side of the connecting plate 76 is provided with a lower block coupling plate housing slot 761 on the right side, the right side is connected plate housing slot 761 to mate with the right sides of the longitudinal web.
 When the operation of the right connecting plate clamping assembly 7, the fifth air cylinder 71 drives the right longitudinal edge clamps 73 is moved downward, thereby pressing the right side clamps 73 on the right side in 13, to ensure that the right side plate 11 and the large snug fit. While the right connecting plate 76 is moved downward together with the pressing block, the connecting plate 19 presses the right side, the right side of the right link plate housing slot 761 to fit the connecting plate 19, 19 to ensure the accuracy of the position of the right side of the connecting plate. Fifth transverse drive cylinder 74 moves the pressure plate 75 to the right side of the right side, the right side from the side of the platen 75 is pressed against the right side 13, right side and to ensure that the right edge of the large base plate 11 are aligned.
 Such as Figure 8 and 9 FIG, 8 corner transition plate positioning assembly includes a positioning block 81, the positioning cylinder 82, the connecting plate 83 is positioned, the first positioning post 84 and a second positioning post 85. Upper positioning seat 81 is provided with a corner of the transition plate 811 is positioned inclined grooves and the positioning groove corner transition plate 811 and the corners of the transition plate radians matched arcuate. When the lower end of the positioning groove corner transition plate 811 is provided with a support portion 812, support portion 812 is positioned in the corner transition plate supporting the lower end corner of the transition plate. One side of positioning seat 81 is provided longitudinally of the positioning cylinder 82, the output terminal 82 of the positioning cylinder a positioning panel 83, end panel 83 is positioned above the positioning corner transition plate positioning groove 811 is provided on the connecting plate 83 there is positioned first positioning pin 84 and a second positioning post 85, post 84 is positioned perpendicular to the first corner transition plate positioning grooves 811, the second post 85 is positioned perpendicular to the supporting portion 812.
 8 corner transition plate positioning assembly operation, manually corner transition plate 16 onto the positioning base 81, and corner transition plate by positioning the positioning groove 811 and positioning cylinder 82 drives the positioning link plate 83 moves downward, so that the first a second positioning post 84 and the positioning post 85 is moved downwardly, the first positioning cylinder 84 is pressed against the upper surface of the corner of the transition plate, the second positioning post 85 is pressed against the supporting portion 812, transition plate to ensure accurate positioning corner.
 Such as Figure 7 , The corner transition plate clamping assembly includes a clamping cylinder 9, the clamping bracket 91, clamping rails 92 and clamping jaw 93. Output terminal of clamping cylinders disposed transversely on the base plate, and clamping cylinders positioned toward the corner region, the output of the clamping cylinder 91 is provided a clamping bracket, the clamping bracket 91 by clamping the bottom rail 92 slidably disposed on the base plate, the clamping bracket 91 toward the side of the arc-shaped cross section that is positioned with the curvature of the corner region is adapted to the transition plate. The left and right sides of the clamp holder 91 is provided with clamping jaws 93.
 When the corner transition plate clamp assembly 9 action clamping cylinder drive clamp bracket 91 is moved to the inside of the positioning region, and sandwiched between the outer surface of the transition plate edges, the clamping jaws 93 grip the two edges of the transition plate side, to ensure the accuracy of the position of the transition plate corners.
 Such as figure 2 Shown, surrounded by the bottom plate is provided with a plurality of lugs 10, to facilitate moving the entire clip.
 Advantage of the invention is to hem the four sides of preliminary positioning block by side, the left direction by the four sides of the flattened assembly, the right side assembly and front and rear flattened four coupling plate clamping unit side once again positioning to ensure accurate location of the side. Corner transition plate positioning assembly of the transition plate edges positioned, the positioned corner transition plate spliced to four corners, and the clamping assembly by clamping the corner transition plate, easy welding. Coupling plate assembly before and after compression, left and right coupling plate clamping unit clamping assembly cooperating coupling plate, located inside the front connection plate, connection plate and positioned around the right link plate, to ensure the stability of the entire undercarriage. Welding, triaxial displacement function according to the welding position of the welding robot displacement, facilitate welding, the welding quality and help to improve welding efficiency.