Segmented welding method and compressor

Abstract

The application provides a segmented welding method and a compressor. The segmented welding method comprises: abutting a first workpiece to be welded and a second workpiece to form a to-be-welded area; segmentally welding the to-be-welded area along a preset main welding direction to form a plurality of welding combinations; each welding combination comprises at least two welding seams, and in the welding combination, the horizontal distance between the centers of the arc starting sections of two adjacent welding seams in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc starting sections of two adjacent welding seams in the vertical direction is within a second preset range. The application can make the propagation of vibration at the welding seam no longer coherent, which helps to prevent the generation of resonance. Moreover, the segmented welding method provided by the application is used for segmentally welding the shell and the motor of the compressor, which can form different molten pool forms between different welding segments, thereby dispersing the load, and thus the abnormal noise mode of the compressor can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a segmented welding method and a compressor. Background Technology

[0002] In the welded structure of the compressor housing and motor, the weld joint is not only an important load-bearing structure connecting the two key components, but also has a significant impact on the overall sealing performance, operational stability, and noise mode of the machine. In the prior art, oscillating welding is usually used to perform circumferential welding on the compressor housing and motor to improve the weld formation quality, increase the weld width, and enhance the metallurgical properties of the fusion zone.

[0003] However, in traditional oscillating welding processes, the weld seam is typically formed into a complete ring structure through continuous, single-pass welding. Its distribution is relatively uniform, usually a horizontally circumferential weld seam evenly distributed along the axial direction. While this weld seam distribution facilitates welding operations and automation, the continuous and regular ring structure of the weld seam results in a relatively consistent vibration propagation path within the weld area. This easily leads to concentrated energy transfer paths at specific frequencies, thus exacerbating the vibration coupling effect between the compressor housing and the motor. Especially when the compressor is subjected to periodic excitation forces during operation, such weld seams can become effective channels for vibration energy conduction, inducing system resonance or local modal coupling, leading to intensified overall machine vibration and abnormal noise. Summary of the Invention

[0004] The purpose of this invention is to provide a segmented welding method and a compressor to solve one or more of the problems existing in the prior art, such as the single-welding forming method of the oscillating welding method, which results in a single weld distribution pattern, easily aggravates the vibration coupling effect between the compressor housing and the motor, and leads to increased vibration of the whole machine and abnormal noise.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a segmented welding method, comprising:

[0006] The first workpiece to be welded is attached to the second workpiece to form the area to be welded;

[0007] The area to be welded is segmented along a preset main welding direction to form several welding combinations; each welding combination includes at least two weld segments, wherein the horizontal distance between the centers of the arc-starting segments of two adjacent weld segments in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc-starting segments of two adjacent weld segments in the vertical direction is within a second preset range.

[0008] Optionally, the first preset range is not less than 0 and not greater than three times the width of the weld.

[0009] Optionally, the second preset range is not less than 0 and not greater than four times the length of the weld.

[0010] Optionally, the width of the weld is in the range of not less than 1 mm and not more than 6 mm.

[0011] Optionally, the length of the weld is in the range of not less than 5 mm and not more than 30 mm.

[0012] Optionally, the first preset range is not less than the width of the weld and not more than three times the width of the weld.

[0013] Optionally, the second preset range is not less than twice the length of the weld and not more than four times the length of the weld.

[0014] Optionally, the first preset range is not less than 2 mm and not more than 4 mm.

[0015] Optionally, the second preset range is not less than 20 mm and not more than 30 mm.

[0016] Optionally, the segmented welding method further includes: when performing segmented welding on the area to be welded along the preset main welding direction, performing the following operation on each weld segment: using a oscillating laser to move and periodically oscillate along the preset sub-welding direction of the current weld segment according to preset welding parameters, and the oscillation direction of the oscillating laser forms an adjustable angle with the preset sub-welding direction.

[0017] Optionally, the adjustable angle can be in the range of 30 degrees to 60 degrees.

[0018] To achieve the above objectives, the present invention also provides a compressor manufactured using any of the segmented welding methods described above.

[0019] Optionally, the first workpiece includes the housing of the compressor, and the second workpiece includes a motor. Both the housing and the motor are cylindrical, and the motor is located inside the housing. The step of bonding the first workpiece to be welded with the second workpiece to form a welding area includes bonding the outer wall of the motor with the inner wall of the housing to form a welding area.

[0020] Compared with the prior art, the segmented welding method and compressor provided by the present invention have the following beneficial effects:

[0021] The segmented welding method provided by this invention includes: bonding a first workpiece and a second workpiece to be welded together to form a welding area; performing segmented welding on the welding area along a preset main welding direction to form several welding combinations; each welding combination includes at least two weld seams, wherein in the welding combination, the horizontal distance between the centers of the arc-starting segments of two adjacent weld seams in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc-starting segments of two adjacent weld seams in the vertical direction is within a second preset range. Therefore, the segmented welding method provided by this invention, by first bonding the first workpiece and the second workpiece to be welded together to form the welding area, can ensure welding quality and reduce defects that may occur during the welding process. Then, by segmenting the welding area along the preset main welding direction to form several welding combinations, the propagation of vibration at the weld seam is no longer continuous, thereby helping to prevent resonance. Furthermore, in the welding assembly, by ensuring that the horizontal distance between the centers of the arc-starting segments of two adjacent weld segments in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc-starting segments of two adjacent weld segments in the vertical direction is within a second preset range, the two adjacent weld segments can each serve as vibration initiation points. This allows a portion of the vibration to cancel each other out within a very short distance, thereby achieving the effect of vibration suppression. Using the segmented welding method provided by this invention to weld the compressor housing and motor in segments, while keeping the welding parameters constant, differentiated molten pool morphologies can be formed between different weld segments, thereby distributing the load and effectively improving the abnormal noise modes of the compressor.

[0022] Furthermore, the segmented welding method further includes: when segmenting the area to be welded along the preset main welding direction, performing the following operation for each weld segment: using a oscillating laser beam to move and periodically oscillate along the preset sub-welding direction of the current weld segment according to preset welding parameters, and the oscillation direction of the oscillating laser forming an adjustable angle with the preset sub-welding direction. Thus, when welding each weld segment, by using a oscillating laser beam to move and periodically oscillate along the corresponding preset sub-welding direction according to preset welding parameters, not only can differentiated molten pool shapes be formed between different weld segments, but the depth and width of the molten pool can also be effectively expanded, improving welding quality. Simultaneously, the adjustable angle between the oscillating laser beam and the preset sub-welding direction allows for flexible adjustment of the molten pool's depth-to-width ratio.

[0023] Since the compressor provided by this invention and the segmented welding method provided by this invention belong to the same inventive concept, the compressor provided by this invention has at least all the advantages of the segmented welding method provided by this invention. For the advantages of the compressor provided by this invention, please refer to the relevant description of the beneficial effects of the segmented welding method provided by this invention, which will not be repeated here. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the overall steps of a segmented welding method provided in Embodiment 1 of the present invention;

[0025] Figure 2 Two specific example diagrams of the first welding combination provided in Embodiment 1 of the present invention;

[0026] Figure 3 These are two specific example diagrams illustrating the second welding combination provided in Embodiment 1 of the present invention;

[0027] Figure 4 Two specific example diagrams of the third welding combination provided in Embodiment 1 of the present invention;

[0028] Figure 5 This is a specific example of segmented welding performed by a oscillating laser along a preset main welding direction, as provided in Embodiment 1 of the present invention.

[0029] Figure 6 This is a specific example diagram of the welding assembly provided in Embodiment 1 of the present invention distributed along a preset main welding direction;

[0030] Figure 7 This is a schematic diagram of the motion trajectory of a oscillating laser provided in Embodiment 1 of the present invention;

[0031] Figure 8 This is another specific example of segmented welding performed by a oscillating laser along a preset main welding direction, as provided in Embodiment 1 of the present invention;

[0032] Figure 9 This is another specific example diagram showing the distribution of the welding assembly along a preset main welding direction provided in Embodiment 1 of the present invention;

[0033] The annotations in the attached figures are explained as follows:

[0034] 10-First workpiece, 11-Second workpiece, 12-Preset main welding direction, 121-Preset sub-welding direction, 13-Weld seam, 14-Oscillating laser, 141-Oscillating direction, 15-Adjustable angle. Detailed Implementation

[0035] The segmented welding method and compressor proposed in this invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, only used to facilitate and clarify the illustration of the embodiments of this invention. Please refer to the drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this invention. Any modifications to the structure, changes in proportions, or adjustments to the size, if they are the same as or similar to the effects and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, positions, and shapes, will be determined in part by the specific application and usage environment. Furthermore, in the embodiments described below, sometimes the same reference numerals are used across different drawings to denote the same parts or parts having the same function, and repeated descriptions are omitted.

[0036] Example 1

[0037] This embodiment provides a segmented welding method. For details, please refer to [link to documentation]. Figure 1 , Figure 1 This is a schematic diagram illustrating the overall steps of the segmented welding method provided in this embodiment. From... Figure 1 It can be seen that the segmented welding method includes:

[0038] S100: The first workpiece 10 to be welded and the second workpiece 11 are attached to form the area to be welded;

[0039] S200: The area to be welded is segmented and welded along the preset main welding direction 12 to form several welding combinations; each welding combination includes at least two weld segments 13, wherein the horizontal distance between the centers of the arc-starting segments of two adjacent weld segments 13 in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc-starting segments of two adjacent weld segments 13 in the vertical direction is within a second preset range.

[0040] Therefore, the segmented welding method provided in this embodiment first brings the first workpiece 10 and the second workpiece 11 together to form the welding area, ensuring welding quality and reducing potential defects during welding. Then, by segmenting the welding area along a preset main welding direction 12 and forming several welding combinations, the propagation of vibration at the weld 13 becomes discontinuous, thus helping to prevent resonance. Furthermore, in the welding combinations, by ensuring that the horizontal distance between the centers of the arc-starting segments of two adjacent weld segments 13 in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc-starting segments of two adjacent weld segments 13 in the vertical direction is within a second preset range, two adjacent weld segments 13 can each serve as vibration origin points, allowing some vibrations to cancel each other out within a short distance, thereby achieving vibration suppression. Using the segmented welding method provided in this embodiment to segment-weld the compressor housing and motor, while keeping the welding parameters constant, differentiated molten pool morphologies can be formed between different weld segments, thereby distributing the load and effectively improving the abnormal noise modes of the compressor.

[0041] It should be noted that in step S200, "in the welding assembly, the horizontal distance between the centers of the arc-starting segments of two adjacent segments of the weld 13 in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc-starting segments of two adjacent segments of the weld 13 in the vertical direction is within a second preset range" specifically includes: in the welding assembly, the horizontal distance between the centers of the arc-starting segments of two adjacent segments of the weld 13 in the horizontal direction is within a first preset range, and the vertical distance between the centers of the arc-starting segments of two adjacent segments of the weld 13 in the vertical direction is within a second preset range; or, in the welding assembly, the horizontal distance between the centers of the arc-starting segments of two adjacent segments of the weld 13 in the horizontal direction is within a first preset range, or the vertical distance between the centers of the arc-starting segments of two adjacent segments of the weld 13 in the vertical direction is within a second preset range.

[0042] Preferably, the first preset range is not less than 0 and not greater than three times the width of the weld 13, and the second preset range is not less than 0 and not greater than four times the length of the weld 13. Thus, by setting appropriate first and second preset ranges, the welds 13 in the welded assembly can be distributed in suitable positions, thereby improving the vibration resistance of the welded assembly.

[0043] It should be noted that the present invention does not impose too many restrictions on the specific values ​​of the width and length of the weld 13.

[0044] Preferably, in some exemplary embodiments, the width of the weld 13 is in the range of not less than 1 mm and not more than 6 mm, and the length of the weld 13 is in the range of not less than 5 mm and not more than 30 mm. Thus, by selecting a suitable range for the width and length of the weld 13, the vibration resistance of the welded assembly can be further improved.

[0045] It should be noted that the present invention does not impose too many restrictions on the specific distribution of the weld seams 13 in the welding assembly.

[0046] For example, in some embodiments, the welding assembly includes two adjacent weld seams 13 in the horizontal direction, and the horizontal distance between the centers of the arc-starting segments of the two weld seams 13 is within a first preset range, which is not less than the width of the weld seam 13 and not more than three times the width of the weld seam 13.

[0047] Specifically, please see Figure 2 , Figure 2 Two specific example diagrams are provided for the first welding assembly in this embodiment. For example... Figure 2 As shown in the left figure, in some embodiments, the horizontal distance between the centers of the starting segments of two adjacent segments of the weld 13 in the horizontal direction (i.e., Figure 2 In the left figure, D) is not less than the width of weld 13 and not greater than three times the width of weld 13, and the vertical distance between the centers of the two arc-starting segments of weld 13 is 0; Figure 2 As shown in the right figure, in some embodiments, the horizontal distance between the centers of the arc-starting segments of two adjacent segments of the weld 13 in the horizontal direction (i.e., Figure 2 In the right figure, D) is not less than the width of the weld 13 and not greater than three times the width of the weld 13, and the vertical distance between the centers of the two arc-starting segments of the weld 13 (i.e., Figure 2 The value of E marked on the right side of the figure is not less than 0.

[0048] For example, in some embodiments, the welding assembly includes two vertically adjacent weld seams 13, the vertical distance between the centers of the arc-starting segments of the two weld seams 13 is within a second preset range, the second preset range being not less than twice the length of the weld seam 13 and not more than four times the length of the weld seam 13.

[0049] Specifically, please see Figure 3 , Figure 3 Two specific example diagrams are provided for the second welding combination in this embodiment. For example... Figure 3 As shown in the left figure, in some embodiments, the vertical distance between the centers of the starting segments of two adjacent segments of the weld 13 in the vertical direction (i.e., Figure 3 In the left diagram, E) is not less than twice the length of weld 13 and not greater than four times the length of weld 13, and the horizontal distance between the centers of the two arc-starting segments of weld 13 is 0; Figure 3 As shown in the right figure, in some embodiments, the vertical distance between the centers of the starting arc segments of two adjacent segments of the weld 13 in the vertical direction (i.e., Figure 3 The E marked on the right side of the figure is not less than twice the length of the weld 13 and not more than four times the length of the weld 13, and the horizontal distance between the centers of the two arc-starting segments of the weld 13 is not less than 0.

[0050] For example, in some embodiments, the welding assembly includes three weld seams 13, the horizontal distance between the centers of the arc-starting segments of two adjacent weld seams 13 in the horizontal direction is within a first preset range, and the vertical distance between the centers of the arc-starting segments of two adjacent weld seams 13 in the vertical direction is within a second preset range, the first preset range is not less than 0 and not greater than three times the width of the weld seam 13, and the second preset range is not less than 0 and not greater than four times the length of the weld seam 13.

[0051] Specifically, please see Figure 4 , Figure 4 Two specific example diagrams are provided for the third welding combination in this embodiment. For example... Figure 4 As shown in the left figure, in some embodiments, the horizontal distance between the centers of the starting segments of two adjacent segments of the weld 13 in the horizontal direction (i.e., Figure 4 The distance between D1 and D2 marked on the left side of the diagram is not less than the width of the weld 13 and not greater than three times the width of the weld 13, and the vertical distance between the centers of the starting arc segments of two adjacent segments of the weld 13 in the vertical direction (i.e., Figure 4 The values ​​E1 and E2 marked on the left side of the diagram are not less than twice the length of weld 13 and not more than four times the length of weld 13; Figure 4 As shown in the right figure, in some embodiments, the horizontal distance between the centers of the arc-starting segments of two adjacent segments of the weld 13 in the horizontal direction (i.e., Figure 4 The distance between the centers of the starting arc segments of two adjacent segments of the weld 13, as indicated by D1 and D2 in the right figure, is not less than the width of the weld 13 and not greater than three times the width of the weld 13. Figure 4 The values ​​E1 and E2 marked on the right side of the figure are not less than 0 and not greater than four times the length of the weld 13.

[0052] It should be noted that the present invention does not impose excessive limitations on the first preset range and the second preset range.

[0053] For example, in some exemplary embodiments, the first preset range is not less than 2 mm and not more than 4 mm, and the second preset range is not less than 20 mm and not more than 30 mm.

[0054] For preferred options, please refer to [link / reference]. Figures 5 to 7 , Figure 5 This is a specific example of segmented welding performed by a oscillating laser along a preset main welding direction, as provided in this embodiment. Figure 6 This is a specific example of the welding assembly provided in this embodiment being distributed along a preset main welding direction; Figure 7 This is a schematic diagram of the motion trajectory of the oscillating laser provided in this embodiment. Figures 5 to 7 As shown, the segmented welding method further includes: when segmenting the area to be welded along the preset main welding direction 12, performing the following operation for each weld segment: using a oscillating laser 14 to move and periodically oscillate along the preset sub-welding direction 121 of the current weld segment according to preset welding parameters, and the oscillation direction 141 of the oscillating laser 14 forms an adjustable angle 15 with the preset sub-welding direction 121. Therefore, when welding each weld segment, by using a oscillating laser 14 to move and periodically oscillate along the corresponding preset sub-welding direction 121 according to preset welding parameters, not only can differentiated molten pool shapes be formed between different weld segments, but the depth and width of the molten pool can also be effectively expanded, improving welding quality. Simultaneously, the adjustable angle 15 formed by the oscillation direction 141 of the oscillating laser 14 with the preset sub-welding direction 121 allows for flexible adjustment of the depth-to-width ratio of the molten pool. The segmented welding method provided in this embodiment, used to weld the compressor housing and motor, allows for flexible adjustment of the depth-to-width ratio of each weld pool. This effectively optimizes the motor's iron loss and noise modes, thereby improving the compressor's performance. Furthermore, the segmented welding method in this embodiment achieves both high-quality welding and reduced porosity in the weld seam 13 using only a single oscillating laser 14. This significantly reduces reliance on dual-laser-beam welding processes, simplifies equipment configuration, and improves process adaptability and economy.

[0055] Furthermore, the segmented welding method further includes: adjusting the aspect ratio of the molten pool formed by the oscillating laser 14 by adjusting the size of the adjustable angle 15 while keeping the preset welding parameters unchanged. Thus, by adjusting the size of the adjustable angle 15, the aspect ratio of the molten pool can be flexibly adjusted.

[0056] from Figure 5 and Figure 6 It can be seen that, Figure 5 and Figure 6 The preset main welding direction 12 is the axial direction of the first workpiece 10, and the welding assembly includes three weld seams 13.

[0057] It should be noted that the above is merely an illustrative description and not a limitation of the present invention. The present invention does not impose excessive limitations on the preset main welding direction 12 and the type and distribution of welding combinations.

[0058] For example, please see Figure 8 and Figure 9 , Figure 8 This is another specific example of segmented welding performed by a oscillating laser along a preset main welding direction, as provided in this embodiment. Figure 9 This is another specific example diagram showing the distribution of the welding assembly provided in this embodiment along a preset main welding direction. From Figure 8 and Figure 9 It can be seen that in some other embodiments, the preset main welding direction 12 can also be the circumferential direction of the first workpiece 10, and the welding assembly can also include two weld seams 13.

[0059] It should be noted that the present invention does not impose too many restrictions on the types of the first workpiece 10 and the second workpiece 11.

[0060] For example, please continue to see Figures 5 to 9 In some embodiments, the first workpiece 10 includes a compressor housing, and the second workpiece 11 includes a motor. Both the housing and the motor are cylindrical, and the motor is located inside the housing. The step of bonding the first workpiece 10 and the second workpiece 11 to be welded to form a welding area includes bonding the outer wall of the motor to the inner wall of the housing to form the welding area. In other embodiments, the second workpiece 11 also includes a compressor pump body assembly, a crankshaft support, etc., and the pump body assembly specifically includes a cylinder head, a cylinder, and an intermediate plate for a multi-cylinder pump body.

[0061] It should be noted that, as those skilled in the art will understand, the preset welding parameters of the oscillating laser 14 can be set according to the actual application scenario. For example, in some embodiments, the preset welding parameters include the preset oscillation frequency, preset welding power, and preset welding speed of the oscillating laser 14; the preset oscillation frequency ranges from 1 Hz to 300 Hz, the preset welding power ranges from 1 watt to 6000 watts, and the preset welding speed ranges from 0.1 mm / s to 40 mm / s.

[0062] In addition, it should be noted that the present invention does not impose too many limitations on the preset welding direction 121 and the oscillation direction 141 of the oscillating laser 14.

[0063] It should be noted that the adjustable angle 15 ranges from 0 degrees to 90 degrees.

[0064] Preferably, the adjustable angle 15 is in the range of 30 degrees to 60 degrees, and most preferably 45 degrees. Therefore, by setting the value of the adjustable angle 15 within a suitable range, the depth and width of the formed molten pool can be effectively expanded, improving the welding effect.

[0065] Please continue reading Figure 7 ,like Figure 7 As shown, the oscillating laser 14 forms a sawtooth trajectory during the welding process.

[0066] In addition, by Figures 5 to 9 It can be seen that the tail of the weld 13 formed between the first workpiece 10 and the second workpiece 11 has an oblique angle feature.

[0067] Example 2

[0068] This embodiment provides a compressor manufactured using the segmented welding method described in any of the above embodiments.

[0069] Since the compressor provided in this embodiment belongs to the same inventive concept as the segmented welding method described in any of the above embodiments, the compressor provided in this embodiment has at least all the advantages of the segmented welding method provided in the above embodiments. For the advantages of the compressor provided in this embodiment, please refer to the relevant description of the beneficial effects of the segmented welding method provided in the above embodiments, which will not be repeated here.

[0070] In summary, the segmented welding method and compressor provided by this invention have the following advantages: The segmented welding method provided by this invention includes: bonding a first workpiece and a second workpiece to be welded together to form a welding area; performing segmented welding on the welding area along a preset main welding direction to form several welding combinations; each welding combination includes at least two weld seams, wherein in the welding combination, the horizontal distance between the centers of the arc-starting segments of two adjacent weld seams in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc-starting segments of two adjacent weld seams in the vertical direction is within a second preset range. Therefore, the segmented welding method provided by this invention, by first bonding the first workpiece and the second workpiece to be welded together to form a welding area, can ensure welding quality and reduce defects that may occur during the welding process. Then, by performing segmented welding on the welding area along the preset main welding direction to form several welding combinations, the propagation of vibration at the weld seam is no longer continuous, thereby helping to prevent resonance. Furthermore, in the welding assembly, by ensuring that the horizontal distance between the centers of the arc-starting segments of two adjacent weld segments in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc-starting segments of two adjacent weld segments in the vertical direction is within a second preset range, the two adjacent weld segments can each serve as vibration initiation points. This allows a portion of the vibration to cancel each other out within a very short distance, thereby achieving the effect of vibration suppression. Using the segmented welding method provided by this invention to weld the compressor housing and motor in segments, while keeping the welding parameters constant, differentiated molten pool morphologies can be formed between different weld segments, thereby distributing the load and effectively improving the abnormal noise modes of the compressor.

[0071] Furthermore, the segmented welding method further includes: when segmenting the area to be welded along the preset main welding direction, performing the following operation for each weld segment: using a oscillating laser beam to move and periodically oscillate along the preset sub-welding direction of the current weld segment according to preset welding parameters, and the oscillation direction of the oscillating laser forming an adjustable angle with the preset sub-welding direction. Thus, when welding each weld segment, by using a oscillating laser beam to move and periodically oscillate along the corresponding preset sub-welding direction according to preset welding parameters, not only can differentiated molten pool shapes be formed between different weld segments, but the depth and width of the molten pool can also be effectively expanded, improving welding quality. Simultaneously, the adjustable angle between the oscillating laser beam and the preset sub-welding direction allows for flexible adjustment of the molten pool's depth-to-width ratio.

[0072] Since the compressor provided by this invention and the segmented welding method provided by this invention belong to the same inventive concept, the compressor provided by this invention has at least all the advantages of the segmented welding method provided by this invention. For the advantages of the compressor provided by this invention, please refer to the relevant description of the beneficial effects of the segmented welding method provided by this invention, which will not be repeated here.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A segmented welding method, characterized in that, include: The first workpiece to be welded is attached to the second workpiece to form the area to be welded; The area to be welded is segmented along a preset main welding direction to form several welding combinations; each welding combination includes at least two weld seams. In the welding combination, the horizontal distance between the centers of the arc-starting segments of two adjacent weld seams in the horizontal direction is within a first preset range, and / or the vertical distance between the centers of the arc-starting segments of two adjacent weld seams in the vertical direction is within a second preset range. The first preset range is greater than 0 and not greater than three times the width of the weld seam, and the second preset range is greater than 0 and not greater than four times the length of the weld seam. When performing segmented welding on the area to be welded along the preset main welding direction, the following operations are performed on each welding segment: a oscillating laser is used to move and oscillate periodically along the preset sub-welding direction of the current welding segment according to preset welding parameters, and the oscillation direction of the oscillating laser forms an adjustable angle with the preset sub-welding direction.

2. The segmented welding method as described in claim 1, characterized in that, The width of the weld is not less than 1 mm and not more than 6 mm.

3. The segmented welding method as described in claim 1, characterized in that, The length of the weld is not less than 5 mm and not more than 30 mm.

4. The segmented welding method as described in claim 1, characterized in that, The first preset range is not less than the width of the weld and not more than three times the width of the weld.

5. The segmented welding method as described in claim 1, characterized in that, The second preset range is not less than twice the length of the weld and not more than four times the length of the weld.

6. The segmented welding method as described in claim 2, characterized in that, The first preset range is not less than 2 mm and not more than 4 mm.

7. The segmented welding method as described in claim 3, characterized in that, The second preset range is not less than 20 mm and not more than 30 mm.

8. The segmented welding method as described in claim 1, characterized in that, The adjustable angle ranges from 30 degrees to 60 degrees.

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