Welding tool for CHC motor shell

Abstract

The welding tool for the CHC motor shell comprises a first horizontal positioning plate, a positioning assembly and a fourth horizontal positioning plate, and a positioning notch groove is formed in the right side edge of the first horizontal positioning plate; the positioning assembly comprises a second horizontal positioning plate, a third horizontal positioning plate, a connecting plate, a first transverse vertical plate and a second transverse vertical plate, the lower side face of the second horizontal positioning plate is provided with a second concave arc face structure, the rear side of the second horizontal positioning plate is provided with a transverse positioning groove hole, and the front end face of the second horizontal positioning plate forms a positioning face. The left end of the second transverse vertical plate is fixedly arranged at the rear end of the right side face of the second horizontal positioning plate, the right end of the second transverse vertical plate is fixedly connected with the left end of the first transverse vertical plate, and the rear end face of the first transverse vertical plate and the rear end face of the second transverse vertical plate are flush with the rear end face of the second horizontal positioning plate. The rear end of a third horizontal positioning plate is fixedly arranged on the upper end face of the first transverse vertical plate, the front end of the third horizontal positioning plate is fixedly connected with the front side of the right end of a second horizontal positioning plate through a connecting plate, the third horizontal positioning plate is provided with a limiting hole corresponding to a through hole in the top of the bending piece, a limiting pin is inserted into the limiting hole, and a U-shaped positioning groove is formed in the upper end of the second transverse vertical plate. A supporting arm extending leftwards is arranged on the rear side of the left end face of the fourth horizontal positioning plate, and an L-shaped notch groove is defined by the front side face of the supporting arm and the horizontal positioning plate. According to the welding tool, the appearance accuracy of a CHC motor shell finished product is improved, the welding qualification requirement is met, and the percent of pass of the CHC motor shell finished product is remarkably improved; and the welding operation of the CHC motor shell can be conveniently divided into multiple procedures, and the overall welding efficiency of the CHC motor shell can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of locomotive motor processing, in particular to a welding tool for a CHC motor housing. Background Art

[0002] A permanent magnet motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque. As a power source for electrical appliances or various machines, the main function of the motor is to convert mechanical energy into electrical energy. The CHC motor is an engine component that controls the operation of mechanical components in the locomotive power system. It is a device that assists the motor to indirectly change speed. The CHC motor can control speed and has very high position accuracy. It can convert voltage signals into torque and speed to drive the control object components.

[0003] like Figures 1 to 3As shown, a CHC motor housing comprises a cylinder A, wherein the front end of the cylinder A is coaxially welded with a flange plate A-1, and the rear end is correspondingly welded with a flange plate A-2, the left end of the upper side edge of the flange plate A-2 is provided with a boss A-2a extending upward, the middle parts of the left side edges of the flange plate A-1 and the flange plate A-2 are welded and fixed together by a longitudinal beam A-4 located in the horizontal direction, and the upper ends of the left side edges are welded and fixed together by a longitudinal beam A-5 located in the horizontal direction, and the upper ends of the right side edges of the flange plate A-1 and the flange plate A-2 are welded and fixed together by a U-shaped support plate A-3 with an opening facing the right side; and further comprises a joint bracket B, a bending part C, two strip support blocks D, a grounding block E and a grounding block F, the lower end of the left side of the joint bracket B is provided with a "7"-shaped notch groove B-1, and the joint bracket B is overlapped and connected through the "7"-shaped notch groove B-1. It is welded and fixed on the upper side surface and the middle part of the right side surface of the longitudinal beam A-5. The bending part C has four supporting legs C-1 extending downward and a plurality of through holes C-2 on the top. The bending part C is located at the right end of the convex arc surface on the upper side of the cylinder A, and the lower ends of the four supporting legs C-1 are welded and fixed on the middle part of the convex arc surface on the upper side of the cylinder A. The lower sides of the two strip support blocks D are both set as concave arc surface structures D-1 that match the convex arc surface on the upper side of the cylinder A. The two strip support blocks D are welded and fixed on the front and rear sides of the middle part of the convex arc surface on the upper side of the cylinder A at parallel intervals along the horizontal transverse direction. The grounding block E is welded and fixed on the rear edge of the upper end surface of the rear arm plate of the U-shaped support plate A-3. The grounding block F is welded and fixed on the middle part of the upper edge surface of the flange plate A-2. A mounting hole is respectively provided at the left and right ends of the grounding block E and the left and right ends of the grounding block F, and the apertures of the two mounting holes are not equal. Since the upper side of the cylinder is a convex arc structure, it is difficult to position the components. Currently, manual marking, manual positioning, and splicing welding are used to weld the joint bracket, bent parts, two strip support blocks, grounding block 1, and grounding block 2 on the convex arc surface on the upper side of the cylinder. Therefore, the appearance quality of the CHC motor housing is greatly affected by human factors. The problems are: (1) The positioning accuracy of the joint bracket, bent parts, strip support blocks, grounding block 1, and grounding block 2 is poor during welding, making it difficult to ensure that all components meet the welding qualification requirements after welding, and the product quality cannot be guaranteed; (2) The number of products is huge, and manual splicing and welding is difficult and inefficient, which cannot meet the large-scale delivery needs of CHC motor housings. Summary of the invention

[0004] The purpose of the utility model is to overcome the defects in the prior art and provide a welding tool for a CHC motor housing. During the welding operation, the joint bracket, the bending part, the strip support block, the grounding block one and the grounding block two can be accurately positioned and placed at the designated positions of the convex arc surface on the upper side of the cylinder of the CHC motor housing, thereby improving the appearance accuracy of the finished CHC motor housing, meeting the welding qualification requirements, and significantly improving the qualification rate of the finished CHC motor housing; at the same time, it is convenient to divide the welding operation of the CHC motor housing into multiple processes, which is helpful to improve the overall welding efficiency of the CHC motor housing; the structural design is simple, the preparation and implementation feasibility is high, the operation is simple, and the practicability is strong.

[0005] To achieve the above purpose, the technical solution of the utility model is to design a welding tool for a CHC motor housing, comprising a horizontal positioning plate 1, a positioning assembly and a horizontal positioning plate 4, wherein the right edge of the horizontal positioning plate 1 has a positioning notch groove for embedding a positioning joint bracket;

[0006] The positioning assembly includes a horizontal positioning plate 2, a horizontal positioning plate 3, a connecting plate, a horizontal vertical plate 1 and a horizontal vertical plate 2. The lower side of the horizontal positioning plate 2 has a concave arc surface structure 2 that matches the convex arc surface on the upper side of the cylinder on the CHC motor housing. The rear side of the horizontal positioning plate 2 has a horizontal positioning slot hole for positioning the strip support block located at the rear side of the cylinder. The front end surface of the horizontal positioning plate 2 forms a positioning surface for positioning the strip support block located at the front side of the cylinder. The left end of the horizontal vertical plate 2 is fixedly arranged at the rear end of the right side surface of the horizontal positioning plate 2. The right end of the horizontal vertical plate 2 is fixedly connected to the left end of the horizontal vertical plate 1. And the rear end face of the horizontal vertical plate one and the rear end face of the horizontal vertical plate two are both flush with the rear end face of the horizontal positioning plate two, the horizontal positioning plate three is arranged on the right side of the horizontal positioning plate two along the front-to-back longitudinal horizontal direction, and the rear end of the horizontal positioning plate three is fixedly arranged on the upper end face of the horizontal vertical plate one, the front end of the horizontal positioning plate three is fixedly connected to the right end front side of the horizontal positioning plate two through the connecting plate, the horizontal positioning plate three is also provided with a limiting hole corresponding to the through hole at the top of the bending part on the cylinder, a limiting pin is inserted in the limiting hole, and the upper end of the horizontal vertical plate two is provided with a U-shaped positioning groove for positioning the grounding block two on the cylinder;

[0007] The rear side of the left end surface of the horizontal positioning plate 4 is provided with a support arm extending to the left side, and the front side surface of the support arm and the left end surface of the horizontal positioning plate 4 are combined to form an L-shaped notch groove for positioning the grounding block 1 on the cylinder.

[0008] The utility model discloses a welding tool for a CHC motor housing. During the welding operation, a joint bracket, a bending part, a strip support block, a grounding block one and a grounding block two can be accurately positioned and placed at designated positions of the convex arc surface on the upper side of the cylinder of the CHC motor housing, thereby improving the appearance accuracy of the finished CHC motor housing, meeting the welding qualification requirements, and significantly improving the qualification rate of the finished CHC motor housing; at the same time, it is convenient to divide the welding operation of the CHC motor housing into multiple processes, which is helpful to improve the overall welding efficiency of the CHC motor housing; the structural design is simple, the preparation and implementation feasibility is high, the operation is simple, and the practicability is strong.

[0009] The preferred technical solution is that the transverse horizontal width dimension of the positioning plate 1 is equal to the transverse horizontal width dimension of the upper side of the longitudinal beam 2 on the cylinder, and the positioning assembly also includes a longitudinal vertical plate 1 and a longitudinal vertical plate 2. The longitudinal vertical plate 1 is fixedly arranged at the left edge position of the upper end face of the horizontal positioning plate 2, and the longitudinal vertical plate 2 is fixedly arranged at the right edge position of the upper end face of the horizontal positioning plate 2. The transverse positioning slot passes through the left and right end faces of the horizontal positioning plate 2, and the left and right ends of the transverse positioning slot respectively have positioning openings adapted to the two ends of the strip support block, and the width dimension of the transverse positioning slot along the longitudinal direction is greater than the width dimension of the positioning opening along the longitudinal direction. The structural design of the positioning assembly is ingenious and reasonable, and the overall structural stability is good. The width dimension of the transverse positioning slot along the longitudinal direction is greater than the width dimension of the positioning opening along the longitudinal direction, ensuring the convenience of the strip support block when it is inserted and placed inside the transverse positioning slot. At the same time, the positioning opening effectively prevents the strip support block from being displaced inside the transverse positioning slot, ensuring the position accuracy of the strip support block after welding.

[0010] A further preferred technical solution is that the upper side of the rear end of the second longitudinal vertical plate has a limit section extending to the rear side, and the rear side surface of the limit section is in close contact with the right end surface of the boss on the cylinder. The limit section facilitates the positioning of the positioning component, ensuring the accuracy and speed of the positioning component on the convex arc surface on the upper side of the cylinder.

[0011] A further preferred technical solution is that ribs are provided between the upper end surface of the longitudinal vertical plate 1 and the horizontal positioning plate 2, and between the upper end surface of the longitudinal vertical plate 2 and the horizontal positioning plate 2. The ribs further improve the overall structural rigidity and strength of the positioning assembly, and effectively prevent the positioning assembly from warping and deformation.

[0012] A further preferred technical solution is that the support arm is provided with an indication mark 1 for indicating the direction of grounding block 1, and the horizontal vertical plate 2 is provided with an indication mark 2 for indicating the direction of grounding block 2. The indication mark facilitates the direction identification of the indicated grounding block, and effectively prevents directional welding errors of the indicated grounding block.

[0013] A further preferred technical solution is that the indicator mark 1 is two protrusions extending to the rear side of the support arm, and one of the protrusions with a larger outer size corresponds to the mounting hole with a larger aperture on the indicator grounding block 1, and the other protrusion with a smaller outer size corresponds to the mounting hole with a smaller aperture on the indicator grounding block 1;

[0014] The second indicator mark is two holes penetrating the second horizontal vertical plate, and the hole with a larger hole diameter corresponds to the mounting hole with a larger hole diameter on the second indicator grounding block, and the hole with a smaller hole diameter corresponds to the mounting hole with a smaller hole diameter on the second indicator grounding block.

[0015] A further preferred technical solution is that the right rear corner of the horizontal positioning plate 4 is set to a rounded corner structure that is consistent with the right rear arc corner shape of the rear arm plate of the U-shaped support plate on the cylinder. This facilitates the rapid and high-precision placement of the horizontal positioning plate 4, which helps to improve the welding efficiency of the grounding block 1.

[0016] A further preferred technical solution is that the front side of the left end face of the support arm, the corner position of the L-shaped notch groove, and the front side of the left end face of the positioning plate 4 are all provided with an arc-shaped notch groove for avoiding the corresponding corner of the grounding block 1 on the cylinder. The arc-shaped notch groove avoids the corresponding corner of the grounding block 1, thereby ensuring that the grounding block 1 can be quickly positioned, placed, and welded.

[0017] The advantages and beneficial effects of the utility model are:

[0018] 1. The utility model is a welding tool for a CHC motor housing. During the welding operation, the joint bracket, the bending part, the strip support block, the grounding block 1 and the grounding block 2 can be accurately positioned and placed at the designated positions of the convex arc surface on the upper side of the cylinder of the CHC motor housing, thereby improving the appearance accuracy of the finished CHC motor housing, meeting the welding qualification requirements, and significantly improving the qualification rate of the finished CHC motor housing; at the same time, it is convenient to divide the welding operation of the CHC motor housing into multiple processes, which is helpful to improve the overall welding efficiency of the CHC motor housing; the structural design is simple, the preparation and implementation feasibility is high, the operation is simple, and the practicability is strong.

[0019] 2. The structural design of the positioning component is ingenious and reasonable, and the overall structural stability is good. The width dimension of the transverse positioning slot along the longitudinal direction is greater than the width dimension of the positioning opening along the longitudinal direction, ensuring the convenience of inserting and placing the strip support block inside the transverse positioning slot. At the same time, the positioning opening effectively prevents the strip support block from shifting inside the transverse positioning slot, ensuring the position accuracy of the strip support block after welding.

[0020] 3. The front side of the left end face of the support arm, the corner position of the L-shaped notch groove, and the front side of the left end face of the positioning plate 4 are all provided with an arc-shaped notch groove for avoiding the corresponding corner of the grounding block 1 on the cylinder. The arc-shaped notch groove plays a role in avoiding the corresponding corner of the grounding block 1, thereby ensuring that the grounding block 1 can be quickly positioned, placed and welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the CHC motor housing from the right front side perspective in the background technology;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the CHC motor housing from the left rear side perspective in the background technology;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of a joint bracket, a bending part, a strip support block, a grounding block 1 and a grounding block 2 on a CHC motor housing in the background technology;

[0024] Figure 4 It is a top-down perspective view of a positioning plate 1 of a welding tool for a CHC motor housing of the utility model;

[0025] Figure 5 It is a right front side perspective stereogram of the positioning assembly of the welding tooling for the CHC motor housing of the utility model;

[0026] Figure 6 This is a bottom-up perspective view of the positioning assembly of the welding tooling for the CHC motor housing of the utility model;

[0027] Figure 7 is a top-down perspective stereogram of positioning plate 4;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the CHC motor housing from the right front side perspective (unwelded joint bracket, bent parts, strip support block, grounding block 1 and grounding block 2);

[0029] Fig. 9 It is a structural schematic diagram of the welding tooling used for the CHC motor housing of the utility model from the left rear side view in the use state;

[0030] Fig.10 yes Fig. 9 A partial enlarged view of the S in the middle;

[0031] Fig.11 It is a schematic diagram of the structure of the welding tool for the CHC motor housing of the utility model in the use state from the right front side perspective;

[0032] Fig.12 yes Fig.11 A partial enlarged view of the middle W.

[0033] In the figure: A, cylinder; B, joint bracket; C, bending part; D, strip support block; E, grounding block 1; F, grounding block 2; A-1, flange plate 1; A-2, flange plate 2; A-2a, boss; A-3, U-shaped support plate; A-4, longitudinal beam 1; A-5, longitudinal beam 2; B-1, "7" shaped notch; C-1, leg; C-2, through hole; D-1, concave arc structure 1; 1, horizontal positioning plate 1; 2, positioning assembly; 3, positioning plate 4; 4, indication mark 1; 5, indication mark 2; 1-1, positioning notch; 2-1, horizontal Positioning plate two; 2-1a, concave arc surface structure two; 2-1b, horizontal positioning slot; 2-1c, positioning opening; 2-1d, positioning surface; 2-2, longitudinal vertical plate one; 2-3, longitudinal vertical plate two; 2-3a, limiting section; 2-4, horizontal positioning plate three; 2-4a, limiting hole; 2-4b, limiting pin; 2-5, connecting plate; 2-6, horizontal vertical plate one; 2-7, horizontal vertical plate two; 2-7a, U-shaped positioning slot; 2-8, rib plate; 3-1, rounded corner structure; 3-2, support arm; 3-3, L-shaped notch slot; 3-4, arc-shaped notch slot. DETAILED DESCRIPTION

[0034] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0035] Example

[0036] like Figures 4 to 7 As shown, the utility model is a welding tool for a CHC motor housing, comprising a horizontal positioning plate 1, a positioning assembly 2 and a horizontal positioning plate 4 3, wherein the right edge of the horizontal positioning plate 1 has a positioning notch groove 1-1 for embedding a positioning joint bracket B;

[0037] The positioning assembly 2 includes a horizontal positioning plate 2-1, a horizontal positioning plate 3 2-4, a connecting plate 2-5, a horizontal vertical plate 1 2-6 and a horizontal vertical plate 2-7. The lower side of the horizontal positioning plate 2-1 has a concave arc surface structure 2-1a that is compatible with the convex arc surface on the upper side of the cylinder A on the CHC motor housing. The rear side of the horizontal positioning plate 2-1 has a horizontal positioning slot 2-1b for locating the strip support block D located on the rear side of the cylinder A. The front end surface of the horizontal positioning plate 2-1 forms a positioning surface 2-1d for locating the strip support block D located on the front side of the cylinder A. The left end of the horizontal vertical plate 2-7 is fixedly arranged on the rear end of the right side surface of the horizontal positioning plate 2-1. The right end of the horizontal vertical plate 2-7 is fixedly connected to the left end of the horizontal vertical plate 1 2-6, and the horizontal The rear end faces of the vertical plate 1 2-6 and the horizontal vertical plate 2-7 are flush with the rear end faces of the horizontal positioning plate 2-1. The horizontal positioning plate 3 2-4 is arranged on the right side of the horizontal positioning plate 2-1 along the front-to-back longitudinal horizontal direction, and the rear end of the horizontal positioning plate 3 2-4 is fixedly arranged on the upper end face of the horizontal vertical plate 1 2-6. The front end of the horizontal positioning plate 3 2-4 is fixedly connected to the front right end of the horizontal positioning plate 2-1 through the connecting plate 2-5. The horizontal positioning plate 3 2-4 is also provided with a limiting hole 2-4a corresponding to the through hole C-2 at the top of the bending part C on the cylinder A. The limiting pin 2-4b is inserted in the limiting hole 2-4a. The upper end of the horizontal vertical plate 2 2-7 is provided with a U-shaped positioning groove 2-7a for positioning the grounding block 2 F on the cylinder A.

[0038] The rear side of the left end surface of the horizontal positioning plate 43 has a support arm 3-2 extending to the left, and the front side surface of the support arm 3-2 and the left end surface of the horizontal positioning plate 43 are combined to form an L-shaped notch groove 3-3 for positioning the grounding block 1 E on the cylinder A.

[0039] Preferably, the transverse horizontal width dimension of the horizontal positioning plate 1 is equal to the transverse horizontal width dimension of the upper side surface of the longitudinal beam 2 A-5 on the cylinder A, and the positioning assembly 2 also includes a longitudinal vertical plate 1 2-2 and a longitudinal vertical plate 2-3. The longitudinal vertical plate 1 2-2 is fixedly arranged at the left edge position of the upper end surface of the horizontal positioning plate 2-1, and the longitudinal vertical plate 2-3 is fixedly arranged at the right edge position of the upper end surface of the horizontal positioning plate 2-1. The transverse positioning slot 2-1b passes through the left and right end surfaces of the horizontal positioning plate 2-1, and the left and right ends of the transverse positioning slot 2-1b respectively have positioning openings 2-1c adapted to the two ends of the strip support block D, and the width dimension of the transverse positioning slot 2-1b along the longitudinal direction is greater than the width dimension of the positioning opening 2-1c along the longitudinal direction.

[0040] Further preferably, the upper side of the rear end of the longitudinal vertical plate 2-3 has a limiting section 2-3a extending rearward, and the rear side surface of the limiting section 2-3a is in close contact with the right end surface of the boss A-2a on the cylinder A.

[0041] Further preferably, rib plates 2-8 are provided between the longitudinal vertical plate 1 2-2 and the upper end surface of the horizontal positioning plate 2-1, and between the longitudinal vertical plate 2-3 and the upper end surface of the horizontal positioning plate 2-1.

[0042] Further preferably, the support arm 3-2 is provided with an indication mark 4 for indicating the direction of the grounding block E, and the horizontal vertical plate 2-7 is provided with an indication mark 5 for indicating the direction of the grounding block F.

[0043] Further preferably, the indicator mark 1-4 is two protrusions extending toward the rear side of the support arm 3-2, and one of the protrusions with a larger outer dimension corresponds to the mounting hole with a larger aperture on the indicator grounding block 1-E, and the other protrusion with a smaller outer dimension corresponds to the mounting hole with a smaller aperture on the indicator grounding block 1-E;

[0044] The indicating mark 2 5 is two holes penetrating the horizontal vertical plate 2-7, and the hole with a larger aperture corresponds to the mounting hole with a larger aperture on the indicating grounding block 2F, and the hole with a smaller aperture corresponds to the mounting hole with a smaller aperture on the indicating grounding block 2F.

[0045] Further preferably, the right rear corner of the horizontal positioning plate 4 3 is set to a chamfered structure 3-1 that is consistent with the right rear arc corner shape of the rear arm plate of the U-shaped support plate A-3 on the cylinder A.

[0046] Further preferably, the front side of the left end face of the support arm 3-2, the corner position of the L-shaped notch groove 3-3, and the front side of the left end face of the positioning plate 43 are all provided with an arc-shaped notch groove 3-4 for avoiding the corresponding corner on the grounding block E on the cylinder A.

[0047] The utility model is a welding tool for CHC motor housing. The use principle is as follows:

[0048] Step 1: Figure 8 The diagram is a schematic diagram of the three-dimensional structure of the CHC motor housing from the right front side when the joint bracket B, the bending part C, the strip support block D, the grounding block 1 E and the grounding block 2 F are not welded. Fig. 9 As shown, the horizontal positioning plate 1 is laid on the upper side surface of the longitudinal beam 2 A-5, and the rear end edge of the horizontal positioning plate 1 is aligned with the rear end edge of the longitudinal beam 2 A-5, and then the joint bracket B is welded to overlap the upper side surface and the middle part of the right side surface of the longitudinal beam 2 A-5 through the "7"-shaped notch groove B-1, and the joint bracket B is located inside the positioning notch groove 1-1 of the horizontal positioning plate 1, and the joint bracket B and the longitudinal beam 2 A-5 are welded and fixed together. After welding is completed, the horizontal positioning plate 1 is removed.

[0049] Step 2: If Fig.10As shown, the positioning plate 43 is laid on the upper end surface of the rear arm plate of the U-shaped support plate A-3 on the cylinder A, and the chamfered structure 3-1 is made to correspond to the right rear arc corner of the U-shaped support plate A-3, and then the grounding block 1 E is placed inside the L-shaped notch groove 3-3, and the protrusion with larger outer dimensions on the support arm 3-2 is made to correspond to the mounting hole with larger aperture on the indicating grounding block 1 E, and the other protrusion with smaller outer dimensions is made to correspond to the mounting hole with smaller aperture on the indicating grounding block 1 E, and the indicating grounding block 1 E is welded and fixedly connected to the upper end surface of the rear arm plate of the U-shaped support plate A-3, and the positioning plate 43 is removed after welding is completed.

[0050] Step 3: If Figures 11-12 As shown, the positioning component 2 is laid on the convex arc surface on the upper side of the cylinder A, and the limiting section 2-3a is fitted on the right end face of the boss A-2a on the flange plate A-2, so that the rear end face of the horizontal vertical plate 1 2-6, the rear end face of the horizontal vertical plate 2-7, and the rear end face of the horizontal positioning plate 2-1 are all fitted on the front side face of the flange plate A-2, and a strip support block D is inserted and placed inside the horizontal positioning slot 2-1b, so that the left and right ends of the strip support block D are respectively located inside the corresponding positioning openings 2-1c on the horizontal positioning slot 2-1b, and the left and right end faces of the strip support block D are respectively aligned with the left and right end faces of the horizontal positioning plate 2-1, and then the strip support block D is welded and fixed to the rear side of the convex arc surface on the upper side of the cylinder A; another strip support block D is fitted and placed on the positioning surface 2-1d on the front side of the horizontal positioning plate 2-1, and the left and right end faces of the strip support block D are respectively aligned with the left and right end faces of the horizontal positioning plate 2-1 The left and right end surfaces of the positioning plate 2-1 are aligned, and then the strip support block D is welded and fixed on the front side of the convex arc surface on the upper side of the cylinder A; the bending part C is placed on the right side end of the convex arc surface on the upper side of the cylinder A, and the bending part C is located correspondingly below the horizontal positioning plate 3 2-4, and the lower end of the limit pin 2-4b is successively connected to the limit hole 2-4a on the horizontal positioning plate 3 2-4 and the through hole C-2 corresponding to the top of the bending part C, and then the lower ends of the four legs C-1 of the bending part C are respectively welded and fixed on the convex arc surface on the upper side of the cylinder A; the grounding block 2 F is placed inside the U-shaped positioning groove 2-7a, and the channel with a larger aperture on the horizontal vertical plate 2-7 corresponds to the mounting hole with a larger aperture on the indicating grounding block 2 F, and the channel with a smaller aperture corresponds to the mounting hole with a smaller aperture on the indicating grounding block 2 F, and the grounding block 2 F is welded and fixed on the convex arc surface on the upper side of the cylinder A, and the positioning assembly 2 is removed after welding is completed.

[0051] The utility model discloses a welding tool for a CHC motor housing. During the welding operation, a joint bracket, a bending part, a strip support block, a grounding block one and a grounding block two can be accurately positioned and placed at designated positions of the convex arc surface on the upper side of the cylinder of the CHC motor housing, thereby improving the appearance accuracy of the finished CHC motor housing, meeting the welding qualification requirements, and significantly improving the qualification rate of the finished CHC motor housing; at the same time, it is convenient to divide the welding operation of the CHC motor housing into multiple processes, which is helpful to improve the overall welding efficiency of the CHC motor housing; the structural design is simple, the preparation and implementation feasibility is high, the operation is simple, and the practicability is strong.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A welding tool for CHC motor housing, characterized in that: It comprises a horizontal positioning plate one (1), a positioning assembly (2) and a horizontal positioning plate four (3), wherein the right side edge of the horizontal positioning plate one (1) has a positioning notch groove (1-1) for embedding a positioning joint bracket (B); The positioning assembly (2) comprises a horizontal positioning plate 2 (2-1), a horizontal positioning plate 3 (2-4), a connecting plate (2-5), a horizontal vertical plate 1 (2-6) and a horizontal vertical plate 2 (2-7); the lower side of the horizontal positioning plate 2 (2-1) comprises a concave arc surface structure 2 (2-1a) adapted to the convex arc surface on the upper side of the cylinder (A) of the CHC motor housing; the rear side of the horizontal positioning plate 2 (2-1) comprises a horizontal positioning slot (2-1b) for locating a strip support block (D) located at the rear side of the cylinder (A); the front end surface of the horizontal positioning plate 2 (2-1) forms a positioning surface (2-1d) for locating the strip support block (D) located at the front side of the cylinder (A); the left end of the horizontal vertical plate 2 (2-7) is fixedly arranged at the rear end of the right side surface of the horizontal positioning plate 2 (2-1); the right end of the horizontal vertical plate 2 (2-7) is fixedly connected to the left end of the horizontal vertical plate 1 (2-6); and the horizontal The rear end faces of the first vertical plate (2-6) and the second horizontal vertical plate (2-7) are flush with the rear end face of the second horizontal positioning plate (2-1); the third horizontal positioning plate (2-4) is arranged on the right side of the second horizontal positioning plate (2-1) along the front-to-back longitudinal horizontal direction, and the rear end of the third horizontal positioning plate (2-4) is fixedly arranged on the upper end face of the first horizontal vertical plate (2-6); the front end of the third horizontal positioning plate (2-4) is fixedly connected to the front right end of the second horizontal positioning plate (2-1) through the connecting plate (2-5); the third horizontal positioning plate (2-4) is also provided with a limiting hole (2-4a) corresponding to the top through hole (C-2) of the bending part (C) on the cylinder (A); a limiting pin (2-4b) is inserted in the limiting hole (2-4a); the upper end of the second horizontal vertical plate (2-7) is provided with a U-shaped positioning groove (2-7a) for positioning the second grounding block (F) on the cylinder (A); The rear side of the left end surface of the horizontal positioning plate four (3) has a support arm (3-2) extending to the left side, and the front side surface of the support arm (3-2) and the left end surface of the horizontal positioning plate four (3) are combined to form an L-shaped notch groove (3-3) for positioning the grounding block one (E) on the cylinder (A).

2. The welding tool for CHC motor housing according to claim 1, characterized in that: The transverse horizontal width dimension of the positioning plate 1 (1) is equal to the transverse horizontal width dimension of the upper side surface of the longitudinal beam 2 (A-5) on the cylinder (A). The positioning assembly (2) also includes a longitudinal vertical plate 1 (2-2) and a longitudinal vertical plate 2 (2-3). The longitudinal vertical plate 1 (2-2) is fixedly arranged at the left edge position of the upper end surface of the horizontal positioning plate 2 (2-1), and the longitudinal vertical plate 2 (2-3) is fixedly arranged at the right edge position of the upper end surface of the horizontal positioning plate 2 (2-1). The transverse positioning slot (2-1b) passes through the left and right end surfaces of the horizontal positioning plate 2 (2-1), and the left and right ends of the transverse positioning slot (2-1b) respectively have positioning openings (2-1c) adapted to the two ends of the strip support block (D), and the width dimension of the transverse positioning slot (2-1b) along the longitudinal direction is greater than the width dimension of the positioning opening (2-1c) along the longitudinal direction.

3. The welding tool for CHC motor housing according to claim 2, characterized in that: The upper side of the rear end of the second longitudinal vertical plate (2-3) has a limiting section (2-3a) extending toward the rear side, and the rear side surface of the limiting section (2-3a) is in close contact with the right end surface of the boss (A-2a) on the cylinder (A).

4. The welding tool for CHC motor housing according to claim 3, characterized in that: Rib plates (2-8) are provided between the upper end surfaces of the longitudinal vertical plate 1 (2-2) and the horizontal positioning plate 2 (2-1), and between the upper end surfaces of the longitudinal vertical plate 2 (2-3) and the horizontal positioning plate 2 (2-1).

5. The welding tool for CHC motor housing according to claim 4, characterized in that: The support arm (3-2) is provided with an indication mark (4) for indicating the direction of the grounding block (E), and the horizontal vertical plate (2-7) is provided with an indication mark (5) for indicating the direction of the grounding block (F).

6. The welding tool for CHC motor housing according to claim 5, characterized in that: The indicator mark 1 (4) is two protrusions extending toward the rear side of the support arm (3-2), and one of the protrusions with a larger outer dimension corresponds to a mounting hole with a larger hole diameter on the indicator grounding block 1 (E), and the other protrusion with a smaller outer dimension corresponds to a mounting hole with a smaller hole diameter on the indicator grounding block 1 (E); The second indicator mark (5) is two holes penetrating the second horizontal vertical plate (2-7), and the hole with a larger hole diameter corresponds to the mounting hole with a larger hole diameter on the second indicator grounding block (F), and the hole with a smaller hole diameter corresponds to the mounting hole with a smaller hole diameter on the second indicator grounding block (F).

7. The welding tool for CHC motor housing according to claim 6, characterized in that: The right rear corner of the horizontal positioning plate four (3) is set as a chamfered corner structure (3-1) that is consistent with the right rear arc corner shape of the rear arm plate of the U-shaped support plate (A-3) on the cylinder (A).

8. The welding tool for CHC motor housing according to claim 7, characterized in that: The front side of the left end face of the support arm (3-2), the corner position of the L-shaped notch groove (3-3), and the front side of the left end face of the positioning plate four (3) are all provided with an arc-shaped notch groove (3-4) for avoiding the corresponding corner on the grounding block one (E) on the cylinder (A).

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