A sand making machine rotor welding double-layer positioning sample tooling and sand making machine rotor welding process

Abstract

The present invention relates to the technical field of welding tooling, and specifically to a double-layer positioning template tooling for welding a sand-making machine rotor and a welding process for the sand-making machine rotor, characterized in that: it includes a bottom plate, a main shaft is provided on the bottom plate, a positioning disk, a positioning gland and an end cover are sleeved on the main shaft, a plurality of pads for supporting the upper end plate are detachably placed on the lower end plate of the rotor, a first wedge mechanism for clamping the positioning gland and a second wedge mechanism for clamping the end cover are also provided on the main shaft, a first positioning template and a second positioning template can be sleeved on the main shaft, the first positioning template and the second positioning template are both double-layer structures, the second wedge mechanism can also be used to clamp the first positioning template and the second positioning template, and the tooling also includes a single-layer positioning template assembly. The overall structure of the present invention is simple and practical, positioning is fast, accurate and high in precision, and the splicing efficiency is effectively improved. At the same time, the overall verticality requirement can be guaranteed to ensure the overall welding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of welding tooling, and in particular to a double-layer positioning template tooling for welding a sand making machine rotor and a welding process for welding a sand making machine rotor. Background Art

[0002] The rotor is an important component of the sand making machine. The material is usually fed into the middle of the high-speed rotating rotor, and then accelerated and thrown out from the outer extension of the rotor due to centrifugal force. The accelerated material is crushed when it hits the outer wall of the crushing chamber.

[0003] The rotor usually includes an upper end plate, a lower end plate and a plurality of fixed plates and fixed blocks arranged between the upper end plate and the lower end plate, and these components are welded together. During the welding process of the components, positioning is required. It was generally considered that drawing lines is used for positioning. If drawing lines is used for positioning, the positioning accuracy cannot be guaranteed. There are also positioning templates used for positioning, but they are all single-layered. The disadvantage of the single-layer is that for some long-shaped components, the bottom of the welded component is positioned, but the positioning of the upper part will be affected, and the verticality requirement of the welded component cannot be well guaranteed. If the verticality is to be better guaranteed, the thickness of the single-layer positioning template must be made thicker, which is not practical, the cost is relatively high, and it is inconvenient to use. The rotor produced by the original positioning method has low positioning accuracy during the splicing process, which reduces the quality of the finished rotor. In addition, the positioning speed is slow, which seriously affects the welding speed, resulting in low welding efficiency of the rotor. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a sand making machine rotor welding double-layer positioning template tooling with a simple and practical overall structure, fast, accurate and high precision positioning, which can effectively improve the splicing efficiency, while ensuring the overall verticality requirements and ensuring the overall welding quality.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows: a double-layer positioning template tooling for a sand making machine rotor is welded, including a base plate, on which a main shaft is detachably provided, a positioning plate for positioning the bottom of the rotor base, a positioning pressure cover for positioning and pressing the upper part of the base, and an end cover for positioning and pressing the upper end plate of the rotor are sleeved on the main shaft, a plurality of pads for supporting the upper end plate are detachably placed on the lower end plate of the rotor, a first wedge block mechanism for clamping the positioning pressure cover and a second wedge block mechanism for clamping the end cover are also provided on the main shaft, a first positioning template for positioning the first fixed plate, the second fixed plate and the third fixed plate and a second positioning template for positioning the fourth fixed plate can be sleeved on the main shaft, the first positioning template and the second positioning template are both double-layer structures, and the second wedge block mechanism can also be used to clamp the first positioning template and the second positioning template, the tooling also includes a single-layer positioning template assembly for positioning the first fixed block, the second fixed block, the third fixed block, the fourth fixed block and the fifth fixed block.

[0006] Furthermore, the first positioning template includes two first templates arranged parallel to each other, a first positioning tube for sleeved on the main shaft is fixedly provided between the two first templates, the first positioning tube is loosely matched with the main shaft, one end of the first positioning tube extends outward and forms a first transition tube, and a plurality of first support tubes are evenly fixedly provided between the two first templates along the circumferential direction of the first positioning tube, a first positioning groove for positioning the first fixed plate, a second positioning groove for positioning the second fixed plate, and a third positioning groove for positioning the third fixed plate are provided on the edge of the first template, the first positioning groove and the second positioning groove are both right-angled, and the number of the first positioning groove, the second positioning groove and the third positioning groove are all three and are evenly arranged along the circumferential direction of the first positioning tube.

[0007] Furthermore, the second positioning template includes two second templates arranged parallel to each other, a second positioning tube for being sleeved on the main shaft is fixedly arranged between the two second templates, the second positioning tube is clearance-matched with the main shaft, one end of the second positioning tube extends outward and forms a second transition tube, and a plurality of second support tubes are also fixedly arranged between the two second templates, and a positioning bevel for positioning the second positioning template and a fourth positioning groove for positioning the fourth fixed plate are provided on the second positioning template, and the fourth positioning groove is in a right angle shape.

[0008] Furthermore, the outer diameter of the positioning plate is matched with the inner diameter of the first inner hole of the base, and the positioning plate is provided with a first positioning hole for being sleeved on the main shaft, and the positioning plate and the main shaft are clearance-matched.

[0009] Furthermore, the lower end surface of the positioning cover protrudes downward and forms a first annular positioning protrusion, the outer diameter of the first annular positioning protrusion is adapted to the inner diameter of the first inner hole, the four edges of the lower end surface of the positioning cover can abut against the upper end surface of the base, and the positioning cover is provided with a second positioning hole for being sleeved on the main shaft, and the positioning cover is clearance-matched with the main shaft.

[0010] Furthermore, the first wedge block mechanism includes a first wedge block and a first wedge-shaped notch opened on the main shaft. The first wedge block is inserted into the first wedge-shaped notch and clamps the positioning cover to press the base.

[0011] Furthermore, the lower end surface of the end cover protrudes downward and forms a second annular positioning protrusion, the outer diameter of the second annular positioning protrusion is adapted to the inner diameter of the second inner hole of the upper end plate, the peripheral edge of the lower end surface of the end cover can abut against the upper end surface of the upper end plate, and the end cover is provided with a third positioning hole for being sleeved on the main shaft, and the end cover and the main shaft are clearance-matched.

[0012] Furthermore, the second wedge block mechanism includes a second wedge block and a second wedge-shaped notch opened on the main shaft. The second wedge block is inserted into the second wedge-shaped notch and clamps the end cover to press the upper end plate.

[0013] Furthermore, the single-layer positioning template assembly includes a third positioning template, a fourth positioning template, a fifth positioning template, a sixth positioning template and a seventh positioning template. The third positioning template is provided with a fifth positioning groove for positioning the first fixed block, the fourth positioning template is provided with two sixth positioning grooves for positioning the second fixed block, the fifth positioning template is provided with a seventh positioning groove for positioning the third fixed block, the sixth positioning template is provided with two eighth positioning grooves for positioning the fourth fixed block, and the seventh positioning template is provided with a ninth positioning groove for positioning the fifth fixed block.

[0014] A welding process for a sand making machine rotor is implemented by the following process steps:

[0015] Step 1: Preparation: Place the base plate at the corresponding welding position and lock the spindle on the base plate.

[0016] Step 2: Sleeve the positioning plate on the bottom of the main shaft and place it on the upper end surface of the base plate, pass the base through the main shaft and sleeve it on the positioning plate and place it on the upper end surface of the base plate. At this time, the positioning plate positions the bottom of the base, sleeve the positioning pressure cover on the main shaft and press the base and make the first annular positioning protrusion embedded in the first inner hole, so as to position the upper part of the base, insert the first wedge block into the first wedge-shaped groove and clamp the positioning pressure cover to press the base. At the same time, it also plays a role in further fixing the main shaft to prevent the main shaft from shaking.

[0017] Step 3: Pass the lower end plate through the main shaft and sleeve it on the upper part of the base, and fix it by spot welding.

[0018] Step 4: Take out the first wedge block from the first wedge-shaped groove, sleeve the first positioning template on the main shaft and place it on the upper end surface of the positioning cover, insert the second wedge block into the second wedge-shaped groove and clamp the first positioning template and the positioning cover to tighten the base so that the whole is in a fixed state.

[0019] Step 5: Place the first fixing plate vertically on the lower end plate, and make one vertical edge of the first fixing plate abut against a vertical edge corresponding to the first positioning groove and make the other vertical edge of the first fixing plate abut against another vertical edge corresponding to the first positioning groove, so as to achieve positioning, and fix it by spot welding. Repeat the above steps and fix the remaining two first fixing plates by spot welding at the corresponding positions in turn.

[0020] Step 6: Place the second fixing plate vertically on the lower end plate, and make one vertical edge of the second fixing plate abut against a vertical edge corresponding to the second positioning groove and make the other vertical edge of the second fixing plate abut against another vertical edge corresponding to the second positioning groove, so as to achieve positioning, and fix it by spot welding. Repeat the above steps and fix the remaining two second fixing plates by spot welding at the corresponding positions in turn.

[0021] Step 7: Place the third fixing plate vertically on the lower end plate, and make one vertical edge of the third fixing plate abut against the edge corresponding to the third positioning groove and make the other vertical edge of the third fixing plate abut against the edge corresponding to the second fixing plate, so as to achieve positioning, and fix it by spot welding. Repeat the above steps and fix the remaining two third fixing plates by spot welding at the corresponding positions in turn.

[0022] Step 8: Take out the second wedge block from the second wedge-shaped notch, then take out the first positioning template from the main shaft, then sleeve the second positioning template on the main shaft and place it on the upper end face of the positioning cover, and make the positioning bevel abut against the corresponding side of one of the second fixed plates to achieve the positioning of the second positioning template itself, insert the second wedge block into the second wedge-shaped notch and clamp the second positioning template and the positioning cover to tighten the base so that the whole is in a fixed state.

[0023] Step 9: Place the fourth fixed plate vertically on the lower end plate, and make one vertical edge of the fourth fixed plate abut against a vertical edge corresponding to the fourth positioning groove and make the other vertical edge of the fourth fixed plate abut against the other vertical edge corresponding to the fourth positioning groove, so as to achieve positioning, and fix it by spot welding. Then take out the second wedge block from the second wedge-shaped notch, take out and rotate the second positioning template to change the placement position of the second positioning template, reinsert the second wedge block into the second wedge-shaped notch for clamping and fixing, repeat the above steps, and spot weld the remaining two fourth fixed plates at the corresponding positions in turn.

[0024] Step 10: Place the arc plate vertically on the lower end plate, and make one side of the arc plate abut against the corresponding side of one of the fourth fixed plates and make the inner surface of the arc plate abut against the corresponding corner of the first fixed plate and the corresponding corner of the second fixed plate to achieve positioning, and fix it by spot welding. Repeat the above steps and fix the remaining two arc plates by spot welding at the corresponding positions in turn.

[0025] Step 11: Place the reinforcing rib plate vertically on the lower end plate, and make one side of the reinforcing rib plate abut against the inner surface of the corresponding position on one of the arc plates to achieve positioning, and weld it to fix it. Repeat the above steps and weld the remaining two reinforcing rib plates to the corresponding positions in turn.

[0026] Step 12: Take out the second wedge block from the second wedge-shaped notch, then take out the second positioning template from the main shaft, insert the first wedge block into the first wedge-shaped notch and clamp the positioning cover to press the base, place multiple pads on the corresponding positions of the lower end plate, then pass the upper end plate through the main shaft and support it through the pads, put the end cover on the main shaft and press the upper end plate and make the second annular positioning protrusion embedded in the second inner hole to position the upper end plate, insert the second wedge block into the second wedge-shaped notch and clamp the end cover to press the upper end plate, so that the whole is in a fixed state, and fix the upper end plate by spot welding.

[0027] Step 13: Remove the second wedge from the second wedge-shaped notch, then remove the end cover from the main shaft, then remove the first wedge from the first wedge-shaped notch, then remove the positioning cover from the main shaft, and finally, remove the gasket from the rotor, loosen the main shaft and remove it from the base plate.

[0028] Step 14: Place the third positioning template on the upper end surface of the lower end plate, position the third positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then place the first fixing block on the upper end surface of the lower end plate, and position the first fixing block through the fifth positioning groove, and fix it by spot welding, change the position of the third positioning template on the lower end plate, repeat the above steps, and spot weld the remaining two first fixing blocks at the corresponding positions in turn.

[0029] Step 15: Place the fourth positioning template on the upper end surface of the lower end plate, position the fourth positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then place the two second fixing blocks on the upper end surface of the lower end plate, and position the two second fixing blocks respectively through the two sixth positioning grooves, and fix them by spot welding, change the position of the fourth positioning template on the lower end plate, repeat the above steps, and spot weld the remaining four second fixing blocks at the corresponding positions in turn.

[0030] Step 16: Place the fifth positioning template on the upper end surface of the lower end plate, position the fifth positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then place the third fixing block on the upper end surface of the lower end plate, and position the third fixing block through the seventh positioning groove, and fix it by spot welding, change the position of the fifth positioning template on the lower end plate, repeat the above steps, and spot weld the remaining two third fixing blocks at the corresponding positions in turn.

[0031] Step 17: Turn over the rotor and align the upper end surface of the upper end plate with the upper end surface of the bottom plate.

[0032] Step 18: Place the third positioning template on the lower end surface of the upper end plate, position the third positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then place the first fixing block on the lower end surface of the upper end plate, and position the first fixing block through the fifth positioning groove, and fix it by spot welding, change the position of the third positioning template on the upper end plate, repeat the above steps, and spot weld the remaining two first fixing blocks at the corresponding positions in turn.

[0033] Step 19: Place the sixth positioning template on the lower end surface of the upper end plate, and position the sixth positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, and then place the two fourth fixing blocks on the lower end surface of the upper end plate, and position the two fourth fixing blocks respectively through the two eighth positioning grooves, and fix them by spot welding, change the position of the sixth positioning template on the upper end plate, repeat the above steps, and spot weld the remaining four fourth fixing blocks at the corresponding positions in turn.

[0034] Step 20: Place the seventh positioning template on the lower end surface of the upper end plate, position the seventh positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then place the fifth fixing block on the lower end surface of the upper end plate, and position the fifth fixing block through the ninth positioning groove, and fix it by spot welding, change the position of the seventh positioning template on the upper end plate, repeat the above steps, and spot weld the remaining two fifth fixing blocks at the corresponding positions in turn.

[0035] Step 21: Complete the welding of the spot welded rotor.

[0036] From the above description, it can be known that the overall structure of the double-layer positioning template tooling for welding a sand making machine rotor provided by the present invention is simple and practical, and the positioning is fast, accurate and high in precision. Through the coordinated use of the positioning plate and the positioning pressure cover, the base can be quickly and accurately positioned. Through the setting of the end cover, the upper end plate can be quickly and accurately positioned. Through the setting of the main shaft, the overall coaxiality after welding can be ensured. By adopting the first positioning template and the second positioning template of the double-layer structure, the first fixed plate, the second fixed plate, the third fixed plate and the fourth fixed plate can be quickly and accurately positioned. At the same time, the verticality requirements of the first fixed plate, the second fixed plate, the third fixed plate and the fourth fixed plate after welding can be guaranteed, and the overall welding quality can be guaranteed. Through the third positioning template, the fourth positioning template, the fifth positioning template, the sixth positioning template and the seventh positioning template of the single-layer structure, the first fixed block, the second fixed block, the third fixed block, the fourth fixed block and the fifth fixed block can be quickly and accurately positioned respectively. During the welding process, each component of the rotor has corresponding positioning, which effectively improves the overall welding efficiency and ensures the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the three-dimensional structure breakdown of the tooling when welding the upper end plate.

[0038] Figure 2 It is a schematic diagram of the three-dimensional structure of the first positioning template.

[0039] Figure 3 It is a schematic diagram of the three-dimensional structure of the second positioning template.

[0040] Figure 4 Schematic diagram of the welding of the base and the lower end plate.

[0041] Figure 5 This is a schematic diagram of the usage status of the first positioning template.

[0042] Figure 6 This is a schematic diagram of the usage status of the second positioning template.

[0043] Figure 7 Schematic diagram of the welding of the upper end plate.

[0044] Figure 8 for Figure 7 Schematic diagram of the internal structure.

[0045] Fig. 9 for Figure 8 A local enlarged schematic diagram of point A in the middle.

[0046] Fig.10 This is a schematic diagram of the usage status of the third positioning template and the fourth positioning template.

[0047] Fig.11This is a schematic diagram of the usage status of the fifth positioning template.

[0048] Fig.12 This is a schematic diagram of the usage status of the third positioning template and the sixth positioning template.

[0049] Fig.13 This is a schematic diagram of the usage status of the seventh positioning template.

[0050] In the figure: 11-base plate; 12-spindle; 13-positioning plate; 131-first positioning hole; 14-positioning gland; 141-first annular positioning convex block; 142-second positioning hole; 15-end cover; 151-second annular positioning convex block; 152-third positioning hole; 16-cushion; 2-first wedge mechanism; 21-first wedge; 22-first wedge notch; 3-second wedge mechanism; 31-second wedge; 32-second wedge notch; 4-first positioning template; 41-first template; 411-first positioning groove; 412-second positioning groove; 413-third positioning groove; 42-first positioning tube; 43-first transition tube; 44-first support tube; 5-second positioning template; 51-second template; 511-positioning bevel; 512-fourth positioning groove; 52-second positioning tube; 53-second transition tube; 54-second support tube; 6-single-layer positioning template assembly; 61-third positioning template; 611-fifth positioning groove; 62-fourth positioning template; 621-sixth positioning groove; 63-fifth positioning template; 631-seventh positioning groove; 64-sixth positioning template; 641-eighth positioning groove; 65-seventh positioning template; 651-ninth positioning groove; 71-base; 711-first inner hole; 72-upper end plate; 721-second inner hole; 73-lower end plate; 731-third inner hole; 81-first fixing plate; 82-second fixing plate; 83-third fixing plate; 84-fourth fixing plate; 85-arc plate; 86-reinforcement rib plate; 91-first fixing block; 92-second fixing block; 93-third fixing block; 94-fourth fixing block; 95-fifth fixing block. DETAILED DESCRIPTION

[0051] The present invention is further described below through specific implementation modes.

[0052] like Figures 1 to 13As shown, a double-layer positioning template tooling for a sand making machine rotor welded in the present invention comprises a bottom plate 11, on which a main shaft 12 is detachably provided, and on which a positioning plate 13 for positioning the bottom of a rotor base 71, a positioning pressure cover 14 for positioning and pressing the upper part of the base 71, and an end cover 15 for positioning and pressing the upper end plate 72 of the rotor are sleeved, and a plurality of pads 16 for supporting the upper end plate 72 are detachably placed on the lower end plate 73 of the rotor, and a first wedge mechanism 2 for clamping the positioning pressure cover 14 and an end cover 15 for clamping the end plate 72 are also provided on the main shaft 12. The second wedge block mechanism 3 of the cover 15, the first positioning template 4 for positioning the first fixed plate 81, the second fixed plate 82 and the third fixed plate 83 and the second positioning template 5 for positioning the fourth fixed plate 84 can be sleeved on the main shaft 12, the first positioning template 4 and the second positioning template 5 are both double-layer structures, the second wedge block mechanism 3 can also be used to clamp the first positioning template 4 and the second positioning template 5, the tooling also includes a single-layer positioning template assembly 6 for positioning the first fixed block 91, the second fixed block 92, the third fixed block 93, the fourth fixed block 94 and the fifth fixed block 95.

[0053] The bottom plate 11 is provided with a threaded hole, the lower end of the main shaft 12 is fixed with a protrusion matched with the threaded hole, the protrusion is provided with an external thread, and the main shaft 12 is threadedly connected to the threaded hole on the bottom plate 11 through the protrusion.

[0054] By using the positioning plate 13 and the positioning cover 14 in coordination, the base 71 can be positioned quickly and accurately. By setting the end cover 15, the upper end plate 72 can be positioned quickly and accurately. By setting the main shaft 12, the overall coaxiality after welding can be ensured. By adopting the first positioning template 4 and the second positioning template 5 with a double-layer structure, the first fixing plate 81, the second fixing plate 82, the third fixing plate 83 and the fourth fixing plate 84 can be positioned quickly and accurately. At the same time, the verticality requirements of the first fixing plate 81, the second fixing plate 82, the third fixing plate 83 and the fourth fixing plate 84 after welding can be ensured, and the overall welding quality can be ensured. By setting the single-layer positioning template assembly 6, the first fixing block 91, the second fixing block 92, the third fixing block 93, the fourth fixing block 94 and the fifth fixing block 95 can be positioned quickly and accurately. During the welding process, each component of the rotor has a corresponding positioning, which effectively improves the overall welding efficiency and ensures the welding quality.

[0055] like Figure 2As shown, the first positioning template 4 includes two first templates 41 arranged parallel to each other, a first positioning tube 42 for being sleeved on the main shaft 12 is fixedly provided between the two first templates 41, the first positioning tube 42 is loosely matched with the main shaft 12, one end of the first positioning tube 42 extends outward and forms a first transition tube 43, a plurality of first support tubes 44 are evenly fixedly provided between the two first templates 41 along the circumferential direction of the first positioning tube 42, a first positioning groove 411 for positioning the first fixing plate 81, a second positioning groove 412 for positioning the second fixing plate 82 and a third positioning groove 413 for positioning the third fixing plate 83 are provided on the edge of the first template 41, the first positioning groove 411 and the second positioning groove 412 are both right-angled, the number of the first positioning groove 411, the second positioning groove 412 and the third positioning groove 413 are all three and are evenly arranged along the circumferential direction of the first positioning tube 42.

[0056] The two first templates 41 arranged parallel to each other are easy to use and accurately positioned, and at the same time can ensure the verticality requirements of the upper and lower parts and ensure the welding quality. Through the setting of the first positioning groove 411, the second positioning groove 412 and the third positioning groove 413, the first fixing plate 81, the second fixing plate 82 and the third fixing plate 83 can be quickly and accurately positioned respectively, effectively improving the splicing efficiency.

[0057] like Figure 3 As shown, the second positioning template 5 includes two second templates 51 arranged parallel to each other, a second positioning tube 52 for being sleeved on the main shaft 12 is fixedly provided between the two second templates 51, the second positioning tube 52 is loosely matched with the main shaft 12, one end of the second positioning tube 52 extends outward and forms a second transition tube 53, and a plurality of second supporting tubes 54 are also fixedly provided between the two second templates 51, a positioning bevel 511 for positioning the second positioning template 5 and a fourth positioning groove 512 for positioning the fourth fixing plate 84 are provided on the second positioning template 5, and the fourth positioning groove 512 is in a right angle shape.

[0058] The two second templates 51 arranged parallel to each other are easy to use and accurately positioned, and at the same time can ensure the verticality requirements of the upper and lower parts and ensure the welding quality. Through the setting of the fourth positioning groove 512, the fourth fixed plate 84 can be quickly and accurately positioned, effectively improving the splicing efficiency.

[0059] like Figure 1 and Figure 8As shown, the outer diameter of the positioning plate 13 is adapted to the inner diameter of the first inner hole 711 of the base 71, and the positioning plate 13 is provided with a first positioning hole 131 for being sleeved on the main shaft 12, and the positioning plate 13 is loosely matched with the main shaft 12, and the lower end surface of the positioning cover 14 protrudes downward and is formed with a first annular positioning protrusion 141, and the outer diameter of the first annular positioning protrusion 141 is adapted to the inner diameter of the first inner hole 711, and the peripheral edges of the lower end surface of the positioning cover 14 can abut against the upper end surface of the base 71, and the positioning cover 14 is provided with a second positioning hole 142 for being sleeved on the main shaft 12, and the positioning cover 14 is loosely matched with the main shaft 12. Through the coordinated use of the positioning plate 13 and the positioning cover 14, the upper and lower ends of the base 71 can be quickly positioned, so that the base 71 as a whole is more stable, and the connection between the main shaft 12 and the bottom plate 11 is also more stable.

[0060] like Figure 1 As shown, the first wedge block mechanism 2 includes a first wedge block 21 and a first wedge-shaped groove 22 opened on the main shaft 12. The first wedge block 21 is inserted into the first wedge-shaped groove 22 and clamps the positioning cover 14 to compress the base 71. By adopting this structure, the first wedge block 21 can be quickly disassembled and assembled, which is simple and convenient to use, thereby quickly clamping or loosening the positioning cover 14 to improve the overall assembly efficiency. In addition, the positioning cover 14 can be equipped with bolts to facilitate the subsequent removal of the positioning cover 14 from the main shaft 12.

[0061] like Figure 8 and Fig. 9 As shown, the lower end surface of the end cover 15 protrudes downward and is formed with a second annular positioning protrusion 151, the outer diameter of the second annular positioning protrusion 151 is adapted to the inner diameter of the second inner hole 721 of the upper end plate 72, and the peripheral edges of the lower end surface of the end cover 15 can abut against the upper end surface of the upper end plate 72. The end cover 15 is provided with a third positioning hole 152 for being sleeved on the main shaft 12, and the end cover 15 is clearance-matched with the main shaft 12. Through the provision of the second annular positioning protrusion 151, the upper end plate 72 can be quickly positioned, thereby improving the splicing efficiency of the upper end plate 72 and ensuring the overall welding quality.

[0062] like Figure 1 As shown, the second wedge block mechanism 3 includes a second wedge block 31 and a second wedge-shaped groove 32 opened on the main shaft 12. The second wedge block 31 is inserted into the second wedge-shaped groove 32 and clamps the end cover 15 to press the upper end plate 72. By adopting this structure, the second wedge block 31 can be quickly disassembled and assembled, which is simple and convenient to use, thereby quickly clamping or loosening the end cover 15 and improving the overall assembly efficiency.

[0063] like Figures 10 to 13 As shown, the single-layer positioning template assembly 6 includes a third positioning template 61, a fourth positioning template 62, a fifth positioning template 63, a sixth positioning template 64 and a seventh positioning template 65. The third positioning template 61 is provided with a fifth positioning groove 611 for positioning the first fixing block 91, the fourth positioning template 62 is provided with two sixth positioning grooves 621 for positioning the second fixing block 92, the fifth positioning template 63 is provided with a seventh positioning groove 631 for positioning the third fixing block 93, the sixth positioning template 64 is provided with two sixth positioning grooves 621 for positioning the fourth fixing block 92, The eighth positioning groove 641 of the fixed block 94 and the seventh positioning template 65 are provided with a ninth positioning groove 651 for positioning the fifth fixed block 95. Through the third positioning template 61, the fourth positioning template 62, the fifth positioning template 63, the sixth positioning template 64 and the seventh positioning template 65, the first fixed block 91, the second fixed block 92, the third fixed block 93, the fourth fixed block 94 and the fifth fixed block 95 can be positioned quickly and accurately respectively, thereby effectively improving the overall welding efficiency and ensuring the overall welding quality.

[0064] A welding process for a sand making machine rotor is implemented by the following process steps:

[0065] Step 1: Preparation work: place the base plate 11 at the corresponding welding position and lock the main shaft 12 on the base plate 11.

[0066] Step 2: If Figure 1 As shown, the positioning disk 13 is sleeved on the bottom of the main shaft 12 and placed on the upper end surface of the bottom plate 11, the base 71 passes through the main shaft 12 and is sleeved on the positioning disk 13 and placed on the upper end surface of the bottom plate 11. At this time, the positioning disk 13 positions the bottom of the base 71, the positioning pressure cover 14 is sleeved on the main shaft 12 and presses the base 71 and the first annular positioning protrusion 141 is embedded in the first inner hole 711, thereby positioning the upper part of the base 71, the first wedge block 21 is inserted into the first wedge-shaped groove 22 and the positioning pressure cover 14 is clamped to press the base 71. At the same time, it also further fixes the main shaft 12 to prevent the main shaft 12 from shaking.

[0067] Step 3: If Figure 1 As shown, the lower end plate 73 passes through the main shaft 12 and is sleeved on the upper part of the base 71 and fixed by spot welding. The base 71 is stepped, and the inner diameter of the third inner hole 731 of the lower end plate 73 is adapted to the outer diameter of the upper part of the base 71.

[0068] Step 4: Figure 5 As shown, the first wedge block 21 is taken out from the first wedge-shaped groove 22, the first positioning template 4 is sleeved on the main shaft 12 and placed on the upper end surface of the positioning cover 14, the second wedge block 31 is inserted into the second wedge-shaped groove 32 and clamps the first positioning template 4 and the positioning cover 14 to press the base 71 so that the whole is in a fixed state.

[0069] Step 5: Figure 5 As shown, the first fixing plate 81 is placed vertically on the lower end plate 73, and one vertical side of the first fixing plate 81 is abutted against a vertical side corresponding to the first positioning groove 411 and the other vertical side of the first fixing plate 81 is abutted against another vertical side corresponding to the first positioning groove 411, so as to achieve positioning and fix them by spot welding, repeat the above steps, and fix the remaining two first fixing plates 81 by spot welding at corresponding positions in turn.

[0070] Step 6: Figure 5 As shown, the second fixing plate 82 is placed vertically on the lower end plate 73, and one vertical side of the second fixing plate 82 is abutted against a vertical side corresponding to the second positioning groove 412 and the other vertical side of the second fixing plate 82 is abutted against another vertical side corresponding to the second positioning groove 412, so as to achieve positioning and fix it by spot welding, repeat the above steps, and fix the remaining two second fixing plates 82 by spot welding at the corresponding positions in turn.

[0071] Step 7: Figure 5 As shown, the third fixing plate 83 is placed vertically on the lower end plate 73, and one vertical side of the third fixing plate 83 is abutted against the side corresponding to the third positioning groove 413 and the other vertical side of the third fixing plate 83 is abutted against the side corresponding to the second fixing plate 82, so as to achieve positioning and fix it by spot welding, repeat the above steps, and fix the remaining two third fixing plates 83 by spot welding at the corresponding positions in turn.

[0072] Step 8: Figure 6 As shown, the second wedge block 31 is taken out from the second wedge-shaped groove 32, and then the first positioning template 4 is taken out from the main shaft 12, and then the second positioning template 5 is sleeved on the main shaft 12 and placed on the upper end surface of the positioning cover 14, and the positioning bevel 511 is abutted against the corresponding side of one of the second fixing plates 82 to achieve the positioning of the second positioning template 5 itself, and the second wedge block 31 is inserted into the second wedge-shaped groove 32 and clamps the second positioning template 5 and the positioning cover 14 to press the base 71, so that the whole is in a fixed state.

[0073] Step 9: Figure 6 As shown, the fourth fixing plate 84 is placed vertically on the lower end plate 73, and one vertical side of the fourth fixing plate 84 is abutted against a vertical side corresponding to the fourth positioning groove 512 and the other vertical side of the fourth fixing plate 84 is abutted against another vertical side corresponding to the fourth positioning groove 512, so as to achieve positioning and fix it by spot welding. Then, the second wedge block 31 is taken out from the second wedge-shaped notch 32, and the second positioning template 5 is taken out and rotated to change the placement position of the second positioning template 5. The second wedge block 31 is reinserted into the second wedge-shaped notch 32 for clamping and fixing. Repeat the above steps to spot weld the remaining two fourth fixing plates 84 at the corresponding positions in turn.

[0074] Step 10: Figure 6 As shown, the arc plate 85 is placed vertically on the lower end plate 73, and one side of the arc plate 85 is abutted against the corresponding side of one of the fourth fixing plates 84, and the inner surface of the arc plate 85 is abutted against the corresponding corner of the first fixing plate 81 and the corresponding corner of the second fixing plate 82, so as to achieve positioning and fix it by spot welding, repeat the above steps, and fix the remaining two arc plates 85 in corresponding positions in turn by spot welding.

[0075] Step 11: Figure 6 As shown, the reinforcing rib plate 86 is placed vertically on the lower end plate 73, and one side of the reinforcing rib plate 86 is abutted against the inner surface of the corresponding position on one of the arc plates 85 to achieve positioning, and then welded and fixed. Repeat the above steps to weld and fix the remaining two reinforcing rib plates 86 at the corresponding positions in turn.

[0076] Step 12: Figure 7 and Figure 8 As shown, the second wedge block 31 is taken out from the second wedge-shaped groove 32, and then the second positioning template 5 is taken out from the main shaft 12, the first wedge block 21 is inserted into the first wedge-shaped groove 22 and the positioning cover 14 is clamped to press the base 71, and multiple pads 16 are placed at corresponding positions on the lower end plate 73 respectively, and then the upper end plate 72 is passed through the main shaft 12 and supported by the pads 16, the end cover 15 is sleeved on the main shaft 12 and presses the upper end plate 72 and the second annular positioning protrusion 151 is embedded in the second inner hole 721, so as to position the upper end plate 72, the second wedge block 31 is inserted into the second wedge-shaped groove 32 and the end cover 15 is clamped to press the upper end plate 72, so that the whole is in a fixed state, and the upper end plate 72 is fixed by spot welding.

[0077] Step 13: Remove the second wedge block 31 from the second wedge-shaped notch 32, then remove the end cover 15 from the main shaft 12, then remove the first wedge block 21 from the first wedge-shaped notch 22, then remove the positioning cover 14 from the main shaft 12, and finally, remove the spacer block 16 from the rotor, loosen the main shaft 12 and remove it from the base plate 11.

[0078] Step 14: Fig.10 As shown, the third positioning template 61 is placed on the upper end surface of the lower end plate 73, and the third positioning template 61 is positioned by the cooperation of one of the second fixing plates 82 and the corresponding one of the third fixing plates 83, and then the first fixing block 91 is placed on the upper end surface of the lower end plate 73, and the first fixing block 91 is positioned by the fifth positioning groove 611 and spot-welded, and the position of the third positioning template 61 on the lower end plate 73 is changed, and the above steps are repeated to spot-weld the remaining two first fixing blocks 91 at corresponding positions in turn.

[0079] Step 15: Fig.10 As shown, the fourth positioning template 62 is placed on the upper end surface of the lower end plate 73, and the fourth positioning template 62 is positioned by the cooperation of one of the second fixing plates 82 and the corresponding one of the third fixing plates 83, and then the two second fixing blocks 92 are placed on the upper end surface of the lower end plate 73, and the two second fixing blocks 92 are respectively positioned by the two sixth positioning grooves 621, and spot-welded and fixed, the position of the fourth positioning template 62 on the lower end plate 73 is changed, and the above steps are repeated to spot-weld the remaining four second fixing blocks 92 at the corresponding positions in turn.

[0080] Step 16: Fig.11 As shown, the fifth positioning template 63 is placed on the upper end surface of the lower end plate 73, and the fifth positioning template 63 is positioned by the cooperation of one of the second fixing plates 82 and the corresponding one of the third fixing plates 83, and then the third fixing block 93 is placed on the upper end surface of the lower end plate 73, and the third fixing block 93 is positioned by the seventh positioning groove 631 and fixed by spot welding, the position of the fifth positioning template 63 on the lower end plate 73 is changed, and the above steps are repeated to spot weld the remaining two third fixing blocks 93 at the corresponding positions in turn.

[0081] Step 17: Turn over the rotor and make the upper end surface of the upper end plate 72 fit with the upper end surface of the bottom plate 11.

[0082] Step 18: Fig.12 As shown, the third positioning template 61 is placed on the lower end surface of the upper end plate 72, and the third positioning template 61 is positioned by the cooperation of one of the second fixing plates 82 and the corresponding one of the third fixing plates 83, and then the first fixing block 91 is placed on the lower end surface of the upper end plate 72, and the first fixing block 91 is positioned by the fifth positioning groove 611 and spot-welded, and the position of the third positioning template 61 on the upper end plate 72 is changed, and the above steps are repeated to spot-weld the remaining two first fixing blocks 91 at corresponding positions in turn.

[0083] Step 19: Fig.12 As shown, the sixth positioning template 64 is placed on the lower end surface of the upper end plate 72, and the sixth positioning template 64 is positioned by the cooperation of one of the second fixing plates 82 and the corresponding one of the third fixing plates 83, and then the two fourth fixing blocks 94 are placed on the lower end surface of the upper end plate 72, and the two fourth fixing blocks 94 are respectively positioned by the two eighth positioning grooves 641, and spot-welded and fixed, the position of the sixth positioning template 64 on the upper end plate 72 is changed, and the above steps are repeated to spot-weld the remaining four fourth fixing blocks 94 at corresponding positions in turn.

[0084] Step 20: Fig.13 As shown, the seventh positioning template 65 is placed on the lower end surface of the upper end plate 72, and the seventh positioning template 65 is positioned by the cooperation of one of the second fixing plates 82 and the corresponding one of the third fixing plates 83, and then the fifth fixing block 95 is placed on the lower end surface of the upper end plate 72, and the fifth fixing block 95 is positioned by the ninth positioning groove 651 and fixed by spot welding, the position of the seventh positioning template 65 on the upper end plate 72 is changed, and the above steps are repeated to spot weld the remaining two fifth fixing blocks 95 at the corresponding positions in turn.

[0085] Step 21: Completely weld the rotor fixed by spot welding.

[0086] The above are only some specific implementation methods of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A double-layer positioning template tooling for a sand making machine rotor, characterized by: The invention comprises a bottom plate, on which a main shaft is detachably provided, and on which a positioning plate for positioning the bottom of the rotor base, a positioning pressure cover for positioning and pressing the upper part of the base, and an end cover for positioning and pressing the upper end plate of the rotor are sleeved, and a plurality of pads for supporting the upper end plate are detachably placed on the lower end plate of the rotor, and the main shaft is also provided with a first wedge block mechanism for clamping the positioning pressure cover and a second wedge block mechanism for clamping the end cover, and the main shaft can be sleeved with a first positioning template for positioning the first fixing plate, the second fixing plate and the third fixing plate, and a second positioning template for positioning the fourth fixing plate, and the first The first positioning template and the second positioning template are both double-layer structures, and the second wedge block mechanism can also be used to clamp the first positioning template and the second positioning template. The tooling also includes a single-layer positioning template assembly for positioning the first fixed block, the second fixed block, the third fixed block, the fourth fixed block and the fifth fixed block. The first positioning template includes two first templates arranged parallel to each other, and a first positioning tube for sleeved on the main shaft is fixedly arranged between the two first templates. The first positioning tube is clearance-matched with the main shaft, and one end of the first positioning tube extends outward to form a first transition tube. The two first templates are arranged along A plurality of first support tubes are evenly fixedly arranged along the circumferential direction of the first positioning tube, a first positioning groove for positioning the first fixing plate, a second positioning groove for positioning the second fixing plate, and a third positioning groove for positioning the third fixing plate are arranged on the edge of the first template, the first positioning groove and the second positioning groove are both right-angled, the number of the first positioning groove, the second positioning groove and the third positioning groove are all three and are evenly arranged along the circumferential direction of the first positioning tube, the outer diameter of the positioning plate is adapted to the inner diameter of the first inner hole of the base, and the positioning plate is provided with a first The positioning cover has a first wedge-shaped groove which is provided on the spindle, and the first wedge-shaped groove is provided on the spindle. The first wedge-shaped groove .... The first wedge-shaped groove is provided on the spindle. The first wedge-shaped groove is provided on the spindle.

2. According to claim 1, a sand making machine rotor tailor-welded double-layer positioning template tooling is characterized by: The second positioning template includes two second templates arranged parallel to each other, a second positioning tube for sleeved on the main shaft is fixedly arranged between the two second templates, the second positioning tube is loosely matched with the main shaft, one end of the second positioning tube extends outward and forms a second transition tube, and a plurality of second support tubes are also fixedly arranged between the two second templates, and a positioning bevel for positioning the second positioning template and a fourth positioning groove for positioning the fourth fixed plate are provided on the second positioning template, and the fourth positioning groove is in a right angle shape.

3. The double-layer positioning template tooling for rotor welding of a sand making machine according to claim 2 is characterized by: The lower end surface of the end cover protrudes downward and is formed with a second annular positioning protrusion, the outer diameter of the second annular positioning protrusion is adapted to the inner diameter of the second inner hole of the upper end plate, the peripheral edge of the lower end surface of the end cover can abut against the upper end surface of the upper end plate, and the end cover is provided with a third positioning hole for being sleeved on the main shaft, and the end cover and the main shaft are clearance-matched.

4. A sand making machine rotor tailor-welded double-layer positioning template tooling according to claim 3, characterized in that: The second wedge block mechanism includes a second wedge block and a second wedge-shaped notch opened on the main shaft. The second wedge block is inserted into the second wedge-shaped notch and clamps the end cover to press the upper end plate.

5. The double-layer positioning template tooling for sand making machine rotor welding according to claim 4 is characterized by: The single-layer positioning template assembly includes a third positioning template, a fourth positioning template, a fifth positioning template, a sixth positioning template and a seventh positioning template. The third positioning template is provided with a fifth positioning groove for positioning the first fixed block, the fourth positioning template is provided with two sixth positioning grooves for positioning the second fixed block, the fifth positioning template is provided with a seventh positioning groove for positioning the third fixed block, the sixth positioning template is provided with two eighth positioning grooves for positioning the fourth fixed block, and the seventh positioning template is provided with a ninth positioning groove for positioning the fifth fixed block.

6. A sand making machine rotor tailoring welding process, using a sand making machine rotor tailoring welding double-layer positioning template tooling as claimed in claim 5 for positioning welding, characterized in that: This is achieved through the following process steps: Step 1: Preparation work, placing the base plate at the corresponding welding position, and locking the main shaft on the base plate; Step 2: Sleeve the positioning disk on the bottom of the spindle and place it on the upper surface of the bottom plate, pass the base through the spindle and sleeve it on the positioning disk and place it on the upper surface of the bottom plate, at this time, the positioning disk positions the bottom of the base, sleeve the positioning gland on the spindle and press the base and make the first annular positioning protrusion embedded in the first inner hole, so as to position the upper part of the base, insert the first wedge block into the first wedge-shaped notch and clamp the positioning gland to press the base, at the same time, it also plays a role in further fixing the spindle to prevent the spindle from shaking; Step 3: Pass the lower end plate through the main shaft and sleeve it on the upper part of the base, and fix it by spot welding; Step 4: Take out the first wedge block from the first wedge-shaped notch, sleeve the first positioning template on the main shaft and place it on the upper end surface of the positioning gland, insert the second wedge block into the second wedge-shaped notch and clamp the first positioning template and the positioning gland to press the base, so that the whole is in a fixed state; Step 5: vertically place the first fixing plate on the lower end plate, and make one vertical side of the first fixing plate abut against one vertical side corresponding to the first positioning groove and make another vertical side of the first fixing plate abut against another vertical side corresponding to the first positioning groove, so as to achieve positioning, and perform spot welding to fix, repeat the above steps, and sequentially perform spot welding to fix the remaining two first fixing plates at corresponding positions; Step 6: vertically place the second fixing plate on the lower end plate, and make one vertical side of the second fixing plate abut against one vertical side corresponding to the second positioning groove and make the other vertical side of the second fixing plate abut against the other vertical side corresponding to the second positioning groove, so as to achieve positioning, and perform spot welding to fix, repeat the above steps, and sequentially perform spot welding to fix the remaining two second fixing plates at corresponding positions; Step 7: vertically place the third fixing plate on the lower end plate, and make one vertical side of the third fixing plate abut against one side corresponding to the third positioning groove and make the other vertical side of the third fixing plate abut against one side corresponding to the second fixing plate, so as to achieve positioning, and perform spot welding to fix, repeat the above steps, and sequentially perform spot welding to fix the remaining two third fixing plates at corresponding positions; Step 8: Take out the second wedge block from the second wedge-shaped notch, then take out the first positioning template from the main shaft, then sleeve the second positioning template on the main shaft and place it on the upper end surface of the positioning gland, and make the positioning bevel abut against one side corresponding to one of the second fixing plates to realize the positioning of the second positioning template itself, insert the second wedge block into the second wedge-shaped notch and clamp the second positioning template and the positioning gland to press the base, so that the whole is in a fixed state; Step 9: vertically place the fourth fixing plate on the lower end plate, and make one vertical side of the fourth fixing plate abut against one vertical side corresponding to the fourth positioning groove and make another vertical side of the fourth fixing plate abut against another vertical side corresponding to the fourth positioning groove, so as to achieve positioning, and perform spot welding to fix, then take out the second wedge block from the second wedge-shaped notch, take out and rotate the second positioning template to change the placement position of the second positioning template, reinsert the second wedge block into the second wedge-shaped notch to clamp and fix, repeat the above steps, and sequentially perform spot welding to fix the remaining two fourth fixing plates at corresponding positions; Step 10: vertically place the arc plate on the lower end plate, and make one side of the arc plate abut against the corresponding side of one of the fourth fixing plates, and make the inner surface of the arc plate abut against the corresponding corner of the first fixing plate and the corresponding corner of the second fixing plate, so as to achieve positioning, and perform spot welding to fix, repeat the above steps, and sequentially perform spot welding to fix the remaining two arc plates at corresponding positions; Step 11: vertically place the reinforcing rib plate on the lower end plate, and make one side of the reinforcing rib plate abut against the inner surface of the corresponding position on one of the arc-shaped plates to achieve positioning, and weld and fix it, repeat the above steps, and weld and fix the remaining two reinforcing rib plates at the corresponding positions in turn; Step 12: Take out the second wedge block from the second wedge-shaped notch, then take out the second positioning template from the main shaft, insert the first wedge block into the first wedge-shaped notch and clamp the positioning cover to compress the base, place a plurality of the cushion blocks on corresponding positions of the lower end plate respectively, then pass the upper end plate through the main shaft and support it through the cushion blocks, sleeve the end cover on the main shaft and press the upper end plate and make the second annular positioning protrusion embedded in the second inner hole to position the upper end plate, insert the second wedge block into the second wedge-shaped notch and clamp the end cover to compress the upper end plate so that the whole is in a fixed state, and fix the upper end plate by spot welding; Step 13: Take out the second wedge block from the second wedge-shaped notch, then remove the end cover from the main shaft, then take out the first wedge block from the first wedge-shaped notch, then remove the positioning gland from the main shaft, and finally, take out the spacer from the rotor, loosen the main shaft and take it out from the bottom plate; Step 14: placing the third positioning template on the upper end surface of the lower end plate, positioning the third positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then placing the first fixing block on the upper end surface of the lower end plate, positioning the first fixing block through the fifth positioning groove, and fixing it by spot welding, changing the position of the third positioning template on the lower end plate, repeating the above steps, and fixing the remaining two first fixing blocks by spot welding at corresponding positions in turn; Step 15: Place the fourth positioning template on the upper end surface of the lower end plate, position the fourth positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then place two of the second fixing blocks on the upper end surface of the lower end plate, and respectively position the two second fixing blocks through the two sixth positioning grooves, and fix them by spot welding, change the position of the fourth positioning template on the lower end plate, repeat the above steps, and sequentially spot weld the remaining four of the second fixing blocks at corresponding positions; Step 16: Place the fifth positioning template on the upper end surface of the lower end plate, position the fifth positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then place the third fixing block on the upper end surface of the lower end plate, and position the third fixing block through the seventh positioning groove, and fix it by spot welding, change the position of the fifth positioning template on the lower end plate, repeat the above steps, and sequentially fix the remaining two third fixing blocks by spot welding at corresponding positions; Step 17: Turn over the rotor and make the upper end surface of the upper end plate fit with the upper end surface of the bottom plate; Step 18: placing the third positioning template on the lower end surface of the upper end plate, positioning the third positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then placing the first fixing block on the lower end surface of the upper end plate, positioning the first fixing block through the fifth positioning groove, and fixing it by spot welding, changing the position of the third positioning template on the upper end plate, repeating the above steps, and fixing the remaining two first fixing blocks by spot welding at corresponding positions in turn; Step 19: Place the sixth positioning template on the lower end surface of the upper end plate, position the sixth positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then place the two fourth fixing blocks on the lower end surface of the upper end plate, and respectively position the two fourth fixing blocks through the two eighth positioning grooves, and fix them by spot welding, change the position of the sixth positioning template on the upper end plate, repeat the above steps, and sequentially fix the remaining four fourth fixing blocks by spot welding at corresponding positions; Step 20: Place the seventh positioning template on the lower end surface of the upper end plate, position the seventh positioning template through the cooperation of one of the second fixing plates and the corresponding one of the third fixing plates, then place the fifth fixing block on the lower end surface of the upper end plate, and position the fifth fixing block through the ninth positioning groove, and fix it by spot welding, change the position of the seventh positioning template on the upper end plate, repeat the above steps, and sequentially fix the remaining two fifth fixing blocks by spot welding at corresponding positions; Step 21: Completely weld the rotor fixed by spot welding.

Images