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CN-224223103-U - Welding tool for motor shell

CN224223103UCN 224223103 UCN224223103 UCN 224223103UCN-224223103-U

Abstract

The utility model discloses a welding tool for a motor casing, which comprises a workbench, wherein the upper end surface of the workbench is rotatably provided with a rotary platform, the upper end surface of the rotary platform is provided with a horizontal substrate, the inner side of the upper end surface of the horizontal substrate is provided with an annular table, the outer side of the upper end surface of the horizontal substrate is fixedly provided with a plurality of positioning vertical plates distributed in an annular way at intervals, the upper end surface of the horizontal substrate and the upper end surface of the horizontal substrate enclose a motor casing accommodating cavity with an upward opening, the upper end surface of the horizontal substrate is further paved with a backing plate assembly sleeved on the outer peripheral side of the annular table, the backing plate assembly is provided with a positioning hole for inserting and positioning each vertical plate on the motor casing, and the welding tool also comprises a concentricity positioning assembly for positioning the concentricity of an upper bottom plate and a cover plate of the motor casing. The positioning and splicing accuracy of each part on the tool is good, the consistency of the appearance size of a motor shell finished product formed by welding is guaranteed, the qualification rate and the whole welding efficiency are improved, the 360-degree welding operation requirement is met by rotating the rotating platform, the welding accessibility is good, and the labor capacity and the fatigue feeling of operators are greatly reduced.

Inventors

  • CHEN PEI

Assignees

  • 常州协发机械制造有限公司

Dates

Publication Date
20260512
Application Date
20250522

Claims (10)

  1. 1. A welding tool for a motor casing is characterized by comprising a workbench (1), wherein a rotary platform (2) is rotatably arranged on the upper end face of the workbench (1), a horizontal substrate (3) is detachably arranged on the upper end face of the rotary platform (2), an annular table (3-2) is arranged on the inner side of the upper end face of the horizontal substrate (3), a plurality of positioning vertical plates (3-3) which are distributed at intervals in the circumferential direction are fixedly arranged on the outer side of the upper end face of the horizontal substrate (3), the annular table (3-2) is matched with a central hole on a bottom plate (A) of the motor casing, and a plurality of motor casing accommodating cavities with upward openings are formed by the positioning vertical plates (3-3) and the upper end face of the horizontal substrate (3); The upper end face of the horizontal base plate (3) is further paved with a base plate assembly sleeved on the periphery side of the annular table (3-2), and the base plate assembly is provided with positioning holes for inserting and positioning a first vertical plate (E), a second vertical plate (G), a third vertical plate (H), a fourth vertical plate (J), a fifth vertical plate (K) and a sixth vertical plate (L) on the motor casing; The motor casing is characterized by further comprising a concentricity positioning assembly (6), wherein the concentricity positioning assembly comprises a supporting assembly (6-3), a positioning ring plate I (6-1) is arranged at the upper end of the supporting assembly (6-3), a positioning ring plate II (6-2) is arranged at the lower end of the supporting assembly, the positioning ring plate I (6-1) is matched with a central hole on a cover plate (B) of the motor casing, and the positioning ring plate II (6-2) is matched with the central hole of the annular table (3-2); When the positioning device is used, the bottom plate (A) on the motor casing is paved at the bottom of the motor casing accommodating cavity, the bottom plate (A) and the base plate component are sleeved on the outer peripheral side of the annular table (3-2) through the central holes respectively, the base plate component is paved on the upper end face of the bottom plate (A), the U-shaped coaming (C) and the straight coaming (D) on the motor casing are propped against the inner side face of the corresponding positioning vertical plate (3-3) respectively, the positioning annular plate II (6-2) on the concentricity positioning component (6) is embedded in the central holes of the annular table (3-2), and the cover plate (B) of the motor casing is sleeved on the outer peripheral side of the positioning annular plate I (6-1).
  2. 2. A welding fixture for a motor casing according to claim 1, wherein the upper ends of the positioning risers (3-3) positioned at the left middle part, the rear middle part and the right middle part of the horizontal base plate (3) are respectively provided with a C-shaped clamp assembly (8) for clamping and connecting the corresponding positioning risers (3-3) with the U-shaped coaming (C) of the motor casing.
  3. 3. The welding fixture for the motor casing according to claim 2, wherein cushion blocks (3-4) for limiting the distance between the outer side surface of the U-shaped coaming (C) and the corresponding outer side edge of the motor casing upper bottom plate (A) are fixedly arranged on the inner side surfaces of the positioning vertical plates (3-3) which are positioned at the left side middle part, the rear side middle part, the right side middle part and the left front side corner part of the horizontal base plate (3) and are propped against the U-shaped coaming (C) on the motor casing.
  4. 4. The welding fixture for motor casing according to claim 3, wherein the backing plate assembly comprises a first annular positioning plate (4) and a second arc-shaped positioning plate (5), which are provided with a central hole matched with the annular table (3-2), the left front side of the first annular positioning plate (4) is provided with a first positioning lug plate (4-1) abutted against the inner side surface of the corresponding positioning vertical plate (3-3), the right front side of the first annular positioning plate is provided with a second positioning lug plate (4-2) abutted against the inner side surface of the corresponding positioning vertical plate (3-3), the rear side of the first annular positioning plate (4) is provided with a plurality of positioning arms (4-3) abutted against the inner side surface of the U-shaped coaming (C) on the motor casing in an annular way, the first positioning lug plate (4-1) is provided with a positioning hole (4-4) for inserting and positioning the first vertical plate (E) corresponding to the position of the opening one (F), the second positioning lug plate (4-5) for inserting and the second positioning lug plate (4-5) on the motor casing is provided with a fourth positioning lug plate (4-6) for inserting and positioning the fourth motor casing (6) on the motor casing, the positioning ear plate II (4-2) is provided with a positioning hole V (4-8) for inserting and positioning a vertical plate V (K) on the motor casing and a positioning hole V (4-9) for inserting and positioning a vertical plate V (L) on the motor casing; The opening of the arc-shaped positioning plate II (5) faces to the right front corner of the motor casing, and a plurality of notch grooves I (5-1) for inserting and positioning the first vertical plate I (E) on the motor casing are arranged at intervals on the peripheral side edge of the arc-shaped positioning plate II (5).
  5. 5. The welding fixture for the motor casing according to claim 4, wherein a plurality of first mounting holes (4-10) are further formed in the first annular locating plate (4) in a circumferential spacing mode, a plurality of second mounting holes (5-2) are further formed in the second arc locating plate (5) in a circumferential spacing mode, the first mounting holes (4-10) and the second mounting holes (5-2) are in one-to-one correspondence, and the first annular locating plate (4) and the second arc locating plate (5) are connected together through pins (7) penetrating through the corresponding first mounting holes (4-10) and the second mounting holes (5-2).
  6. 6. The welding fixture for motor housing according to claim 5, wherein the inner side of the first positioning ring plate (6-1) and the inner side of the second positioning ring plate (6-2) are correspondingly provided with a horizontal circular plate (6-3 a) positioned at the central position, the first positioning ring plate (6-1) and the horizontal circular plate (6-3 a) positioned at the inner side thereof are fixedly connected together through a plurality of support arms (6-3 b) arranged at intervals in the circumferential direction, the corresponding support arms (6-3 b) positioned at the upper side and the lower side are fixedly connected together through a second upright post (6-3 c), the horizontal circular plate (6-3 a) positioned at the inner side of the first positioning ring plate (6-1), the horizontal circular plate (6-3 a) positioned at the inner side of the second positioning ring plate (6-2) and the second upright post (6-3 c) form the support assembly (6-3), the center of the horizontal circular plate (6-3 a) is provided with a through hole (6-3) penetrating the plate body, the center of the second upright post (6-3) is positioned at the central position of the first upright post (3) when the first upright post (3) is positioned at the central position of the first upright post (3), the concentricity positioning assembly (6) is sleeved on the first upright post (3-1) through a second through hole (6-3 d) positioned on the horizontal circular plates (6-3 a) at the upper side and the lower side.
  7. 7. The welding fixture for motor shells according to claim 6, wherein an ear plate (3-5) extending towards the front side is fixedly arranged in the middle of the outer side surface of a positioning vertical plate (3-3) which is positioned at the left front side corner of the horizontal base plate (3) and is propped against the front end part of the left side arm of the U-shaped coaming (C) on the motor shell, the front end of the right side edge of the ear plate (3-5) is provided with a plugging groove (3-5 a) corresponding to the second positioning hole (4-5), and the plugging groove (3-5 a) is matched with the second vertical plate (G) on the motor shell.
  8. 8. The welding fixture for the motor casing according to claim 7, wherein the second positioning hole (4-5) and the sixth positioning hole (4-9) are notch grooves with openings facing to the rear side, the fifth positioning hole (4-8) is a notch groove with an opening facing to the front side, and the opening of the first notch groove (5-1) is radially facing to the outer peripheral side of the second arc-shaped positioning plate (5); Shi Hancao (11) are arranged on the bottom side edge of the notch groove I (5-1), the bottom side edge of the positioning hole II (4-9), the inner periphery of the positioning hole I (4-4), the inner periphery of the positioning hole III (4-6), the inner periphery of the positioning hole IV (4-7) and the inner periphery of the positioning hole V (4-8).
  9. 9. The welding fixture for motor shells according to any one of claims 1-8, wherein the lower end surface of the workbench (1) is provided with a plurality of supporting legs (1-1), the upper end surface of the rotary platform (2) is provided with a plurality of threaded holes (2-1) at intervals, the horizontal base plate (3) is provided with a mounting hole penetrating through the base plate body, the horizontal base plate (3) is fixedly connected with the threaded holes (2-1) corresponding to the upper end surface of the rotary platform (2) through screws (10) penetrating through the mounting hole, and a driving motor (9) for driving the rotary platform (2) to rotate is mounted on the lower end surface of the workbench (1).
  10. 10. The welding fixture for the motor casing according to claim 9, further comprising a plurality of 7-shaped pressing plates (12), wherein waist-shaped holes (12-1) along the length direction are formed in the horizontal arm plates of the 7-shaped pressing plates (12).

Description

Welding tool for motor shell Technical Field The utility model relates to the technical field of motor casing welding, in particular to a welding tool for a motor casing. Background The motor casing is a core protection component for protecting internal elements in the rail transit traction motor, and mainly plays roles of structural support, protection and the like. The motor casing is generally made of carbon steel, so that the high mechanical strength performance of the motor casing can be used for effectively bearing the inner rotor, the stator and other core components of the motor, resisting impact load and vibration in operation and ensuring the overall structural stability of the motor. In addition, the motor casing is of an all-welded cylindrical structure, and can effectively prevent external pollutants such as dust, moisture and the like from invading the inside of the motor, so that the service life of key components (such as windings, bearings and the like) in the motor can be prolonged. The motor casing for the rail transit traction motor shown in fig. 1-2 comprises a bottom plate A, a cover plate B, U type coaming C and a flat coaming D, wherein the cover plate B is correspondingly positioned above the bottom plate A in parallel, the U-shaped coaming C is vertically welded and clamped between the left side edges, the rear side edges and the right side edges of the bottom plate A and the cover plate B, the opening of the U-shaped coaming C faces forward, the flat coaming D is vertically welded and clamped between the right front side edges of the bottom plate A and the cover plate B, an opening F positioned at the left front corner of the motor casing is formed between the front end of the left side arm of the U-shaped coaming C and the left end of the flat coaming D, an opening two M positioned at the right side wall front end of the motor casing is formed between the front end of the right side arm of the U-shaped coaming C and the right end of the flat coaming D, the bottom plate A and the cover plate B are provided with coaxially corresponding center holes, a plurality of vertical plates E which are vertically distributed on the peripheral sides of central holes of the two are also welded between the bottom plate A and the cover plate B at intervals in the circumferential direction, a vertical plate II G is welded on the outer sides of the left front corners of the bottom plate A and the cover plate B, the middle part of the right vertical edge surface of the vertical plate II G is welded with the front end edge surface of the left side arm of the U-shaped coaming C, a vertical plate III H positioned on the left side inside the opening I F and a vertical plate IV J positioned on the right end inside the opening I are also vertically welded between the bottom plate A and the cover plate B, the right end of the inner side surface of the vertical plate IV J is fixedly connected with the left end edge surface of the straight coaming D in a welding manner, a vertical plate V K is also vertically welded between the bottom plate A and the cover plate B, the outer vertical edge of the vertical plate V K is vertically welded on the right end of the inner side surface of the straight coaming D, and a vertical plate six L positioned at the right side end of the opening two M is also vertically welded between the bottom plate A and the cover plate B, one side vertical edge of the vertical plate six L facing the inner cavity of the motor shell is also fixedly connected with the front end edge surface of the right side arm of the U-shaped coaming C by welding, and a plurality of through holes A-1 surrounding the periphery of the central hole are also formed in the bottom plate A. At present, the motor casing is formed by adopting a manual splicing and welding mode, namely, welding is performed while splicing all components together. The manual splicing and welding mode has the technical problems that (1) the splicing and positioning accuracy of all parts is poor, the splicing accuracy is difficult to control, the size of a welded and formed motor shell is unstable, the welding accuracy is difficult to meet drawing requirements, (2) the positioning and splicing difficulty of all components is high, the efficiency is low, the overall welding speed is difficult to meet the large-batch delivery requirements of the motor shell, and (3) in the welding process, welding personnel need to frequently change the welding position and the welding angle to weld, the welding accessibility is poor, the manual welding comfort is poor, and the fatigue of the welding personnel is increased in an intangible way. Therefore, the utility model provides a welding tool for a motor casing, so as to solve the technical problems. Disclosure of Invention The utility model aims to overcome the defects in the prior art, provides a welding tool for motor shells, wherein each part is welded after being positioned and spliced on the too