A laser cutting method for stator and rotor steel sheets

Abstract

The application discloses a laser cutting method for stator and rotor steel sheets, and belongs to the technical field of laser processing. The laser cutting method for stator and rotor steel sheets comprises the following steps: producing a clamping tool and a workbench according to the preset size of the stator and / or rotor; producing a production model drawing according to the preset size of the stator and / or rotor; importing the production model drawing into a visual positioning laser cutting system, formulating a processing sequence and a processing path of the production model drawing to form a processing scheme; positioning and connecting the clamping tool to the workbench, positioning and connecting a processing sheet to the clamping tool, and performing laser cutting on the processing sheet according to the processing scheme to obtain a processing finished product; measuring the actual size of the processing finished product; when the deviation between the actual size and the preset size exceeds a preset value, adjusting or re-producing the production model drawing according to the deviation, and re-processing according to the adjusted or re-produced production model drawing, so that the laser processing efficiency and the processing precision of the finished product of the stator and / or rotor are improved.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology, and in particular to a laser cutting method for stator and rotor steel sheets. Background Technology

[0002] Silicon steel sheets are key components of the stator and rotor of electric motors. Their performance not only affects the energy loss of the motor but also its overall performance, size, and weight. Traditional silicon steel sheet processing mainly involves die stamping, requiring the development of specialized molds, resulting in long manufacturing cycles and high costs. Therefore, during the research and development phase, laser cutting is now widely used to process silicon steel sheets. This laser forming process eliminates the need for molds, allows for the cutting of arbitrary shapes, shortens the manufacturing cycle, and reduces research and development costs.

[0003] In related technologies, traditional laser cutting methods generally suffer from low processing efficiency and low processing accuracy. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a laser cutting method for stator and rotor steel sheets, which is beneficial to improving the laser processing efficiency and finished product processing accuracy of stators and / or rotors.

[0005] The laser cutting method for stator and rotor steel sheets according to embodiments of the present invention is applied to the laser cutting of stators and / or rotors. The laser cutting method for stator and rotor steel sheets includes: The clamping fixture and worktable are manufactured according to the preset dimensions of the stator and / or rotor. The worktable is used to position the clamping fixture, and the clamping fixture is used to position the workpiece for processing. A production model drawing is made based on the preset dimensions of the stator and / or rotor; The production model drawing is imported into the vision positioning laser cutting system. The relevant lines of the production model drawing are adjusted in the vision positioning laser cutting system, and the processing sequence and processing path of the production model drawing are determined to form a processing plan. Position and connect the clamping fixture to the worktable, position and connect the workpiece to the clamping fixture, and perform laser cutting on the workpiece according to the processing plan to obtain the finished product; Measure the actual dimensions of the finished product and compare them with the preset dimensions; When the deviation between the actual size and the preset size exceeds the preset value, the production model drawing is adjusted or remade according to the deviation, and the processing is carried out again according to the adjusted or remade production model drawing.

[0006] The laser cutting method for stator and rotor steel sheets according to embodiments of the present invention has at least the following beneficial effects: Before cutting, the laser cutting method for stator and rotor steel sheets can fabricate clamping fixtures and a worktable based on the preset dimensions of the stator and / or rotor to be processed. The worktable is used to position the clamping fixture, and the clamping fixture is used to position the material to be processed. This eliminates the need for repeated searching of the center point coordinates of the material to be cut, effectively reducing processing time and improving processing efficiency. Furthermore, the laser cutting method for stator and rotor steel sheets can create a production model drawing based on the preset dimensions of the stator and / or rotor, and import the production model drawing into a view... After the vision-positioning laser cutting system is installed, the relevant lines of the production model diagram can be adjusted within the system to ensure a more complete and continuous processing path along these lines. By determining the processing sequence and path of the production model diagram, a processing plan is formed. After the finished product is obtained according to the processing plan, the actual dimensions of the finished product can be measured. If the deviation exceeds the preset value, the production model diagram can be adjusted or remade based on the deviation, serving as a feedback compensation function. The stator and / or rotor processed according to the adjusted or remade production model diagram achieve higher processing accuracy.

[0007] According to some embodiments of the present invention, a visual positioning laser cutting system includes a laser and a red light emitter, the red light emitter being used to indicate the processing trajectory of the laser; In the vision-positioning laser cutting system, adjust the relevant lines of the production model drawing and determine the processing sequence and path for the production model drawing, including: Control the laser to move relative to the clamping fixture in the vertical direction to the preset position; Control the operation of the red light emitter, which projects the laser's processing trajectory onto the clamping fixture; Adjust the machining trajectory to make it coincide with the machining edge of the clamping fixture, and obtain the coordinates of the center point of the machining of the workpiece.

[0008] According to some embodiments of the present invention, the vision positioning laser cutting system includes control software; Import the production model drawing into the vision-positioning laser cutting system, and adjust the relevant lines of the production model drawing in the vision-positioning laser cutting system, including: Convert the production model diagram into a format compatible with the control software, and open the production model diagram using the control software. The relevant lines in the production model diagram are merged in the control software to make the processing path continuous and complete.

[0009] According to some embodiments of the present invention, a processing sequence and processing path for a production model drawing are determined to form a processing plan, including: Set the machining path and machining sequence according to the machining requirements of the stator and / or rotor; The processing path is simulated to verify whether the processing sequence is accurate; Once the processing sequence is determined to be accurate, a processing plan is formulated.

[0010] According to some embodiments of the present invention, when the deviation between the actual size and the preset size exceeds a preset value, adjusting or remaking the production model drawing based on the deviation includes: When the deviation between a single actual size and the preset size exceeds the preset value; Open the production model drawing in a 2D drawing software, adjust the offset of the corresponding lines, integrate the relevant lines, delete the original corresponding lines, and obtain the adjusted production model drawing.

[0011] According to some embodiments of the present invention, when the deviation between the actual size and the preset size exceeds a preset value, adjusting or remaking the production model drawing based on the deviation includes: When the deviations between multiple actual dimensions and preset dimensions exceed the preset values; Open the production model drawing in a 2D drawing software, and redraw the production model drawing based on the deviations between the actual dimensions and the preset dimensions.

[0012] According to some embodiments of the present invention, when the deviation between the actual size and the preset size exceeds a preset value, adjusting or remaking the production model drawing based on the deviation includes: When the deviations between multiple actual dimensions and preset dimensions exceed the preset values; Open the production model drawing in a 2D drawing software, offset the values ​​of multiple corresponding lines, integrate the relevant lines, delete the original corresponding lines, and obtain the adjusted production model drawing.

[0013] According to some embodiments of the present invention, when the deviation between the actual size and the preset size exceeds a preset value, adjusting or remaking the production model drawing based on the deviation includes: Open the production model diagram in the control software, cut the corresponding lines with an intaglio cut, and the intaglio cut value is the deviation value to obtain the adjusted production model diagram; Alternatively, open the production model diagram in the control software, make a positive cut on the corresponding lines, and the value of the positive cut is the deviation value to obtain the adjusted production model diagram.

[0014] According to some embodiments of the present invention, the clamping fixture has a fixture panel, a stator support plate and a rotor support plate arranged sequentially from the outside to the inside and connected together; the fixture panel, the stator support plate and the rotor support plate are all located on the same horizontal plane.

[0015] According to some embodiments of the present invention, the workbench includes a tooling support block and two parallel support seats; the two support seats are respectively connected to the two ends of the tooling support block, the upper end of the support seat is provided with a slide rail, the two ends of the tooling support block are respectively slidably connected to the two slide rails, and the tooling panel is fixed on the upper part of the tooling support block.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a flowchart of a laser cutting method for stator and rotor steel sheets according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating the process of obtaining the center point coordinates of the processed material in a laser cutting method for stator and rotor steel sheets according to an embodiment of the present invention. Figure 3 This is a flowchart illustrating the relevant lines in the production model diagram for adjusting a laser cutting method for stator and rotor steel sheets according to an embodiment of the present invention. Figure 4 This is a flowchart illustrating the forming and processing scheme of a laser cutting method for stator and rotor steel sheets according to an embodiment of the present invention. Figure 5 This is a flowchart illustrating the process of adjusting a production model diagram using two-dimensional drawing software in a laser cutting method for stator and rotor steel sheets according to an embodiment of the present invention. Figure 6 This is a flowchart illustrating the laser cutting method for stator and rotor steel sheets according to an embodiment of the present invention, which involves recreating a production model diagram using two-dimensional drawing software. Figure 7 This is a flowchart illustrating a laser cutting method for stator and rotor steel sheets according to an embodiment of the present invention, which uses two-dimensional drawing software to adjust the production model diagram by offset. Figure 8 This is a schematic diagram of the clamping fixture and worktable for stator and rotor steel sheets according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the worktable for stator and rotor steel sheets from another perspective, representing an embodiment of the present invention.

[0018] Icon labels: 100. Workbench; 110. Support base; 120. Slide rail; 130. Tooling support block; 131. Lower clamping block; 140. Stop block; 150. Material drop box; 160. Clamp; 170. Dust suction port; 200. Clamping fixture; 210. Fixture panel; 220. Stator support plate; 230. Rotor support plate. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] In related technologies, the main methods for cutting silicon steel sheets include the following: 1. Electrical Discharge Cutting Electrical discharge machining (EDM) generates high temperatures and pressures through the instantaneous discharge of electrodes, causing silicon steel sheets to crack. This cutting method requires high voltage and current, and because it produces a significant amount of waste and dust, it is typically only suitable for cutting smaller silicon steel sheets.

[0024] 2. Stamping process The stamping process involves placing silicon steel sheets into a mold and then applying pressure to break the sheets directly. This cutting method can complete the cutting of large batches of silicon steel sheets in a relatively short time, but it requires large die-casting equipment and molds, and the procurement and maintenance costs are high.

[0025] 3. Laser cutting Laser cutting involves irradiating a silicon steel sheet with a laser beam, causing it to melt or vaporize locally. The laser beam's trajectory is controlled to cut the silicon steel sheet. Laser cutting can achieve high-precision, high-speed, and high-quality cutting results.

[0026] Reference Figures 1 to 9As shown, an embodiment of the present invention provides a laser cutting method for stator and / or rotor steel sheets. This method, through laser cutting, processes stators and / or rotors, which improves the laser processing efficiency and finished product precision. Specifically, the laser cutting method for stator and / or rotor steel sheets includes the following steps: Step S100: Make a clamping fixture 200 and a worktable 100 according to the preset dimensions of the stator and / or rotor. The worktable 100 is used to position the clamping fixture 200 and the clamping fixture 200 is used to position the processing sheet. Step S200: Create a production model drawing based on the preset dimensions of the stator and / or rotor; Step S300: Import the production model drawing into the vision positioning laser cutting system, adjust the relevant lines of the production model drawing in the vision positioning laser cutting system, and formulate the processing sequence and processing path of the production model drawing to form a processing plan. Step S400: Position the clamping fixture 200 and connect it to the worktable 100; position the workpiece and connect it to the clamping fixture 200; perform laser cutting on the workpiece according to the processing plan to obtain the finished product. Step S500: Measure the actual dimensions of the finished product and compare the actual dimensions with the preset dimensions; Step S600: When the deviation between the actual size and the preset size exceeds the preset value, adjust or remake the production model drawing according to the deviation, and reprocess according to the adjusted or remade production model drawing.

[0027] Reference Figure 1 , Figure 8 and Figure 9 As shown, in step S100, the laser cutting method for stator and rotor steel sheets can be used to manufacture a clamping fixture 200 and a worktable 100 according to the preset dimensions of the stator and / or rotor. The clamping fixture 200 can be set according to the size and shape of the stator and / or rotor to position the processed sheet on the X and Y axes of the horizontal plane.

[0028] Reference Figure 1 , Figure 8 and Figure 9 As shown, the worktable 100 is used to position the clamping fixture 200, and the clamping fixture 200 is used to position the processing sheet. This eliminates the need to repeatedly search for the center point coordinates of the processing sheet to be cut, effectively reducing processing time and improving processing efficiency.

[0029] Reference Figure 1 , Figure 8 and Figure 9As shown, in step S200, the operator can create a production model drawing on two-dimensional drawing software according to the preset dimensions of the stator and / or rotor. For example, the operator can draw a production model drawing of the stator and / or rotor on CAD drawing software according to the preset dimensions.

[0030] Reference Figure 1 , Figure 8 and Figure 9 As shown, in step S300, the operator can import the drawn production model diagram into the vision positioning laser cutting system, and adjust the relevant lines of the production model diagram in the laser vision positioning laser cutting system so that the processing path along the relevant lines of the production model diagram is more complete and continuous.

[0031] Reference Figure 1 , Figure 8 and Figure 9 As shown, the laser cutting method for stator and rotor steel sheets can use a vision-positioning laser cutting system to determine the processing sequence and path of the production model drawing, thereby forming a specific processing plan.

[0032] Reference Figure 1 , Figure 8 and Figure 9 As shown, in step S400, the operator can position and connect the clamping fixture 200 to the worktable 100 to achieve the connection between the clamping fixture 200 and the worktable 100, and position and connect the workpiece to be processed to the clamping fixture 200, thereby achieving stable positioning and connection of the workpiece, so that the workpiece remains stable during the processing.

[0033] Reference Figure 1 , Figure 8 and Figure 9 As shown, the staff can then laser-cut the processing sheet according to the established processing plan to obtain the finished product. The finished product can be used to verify the accuracy of the original processing plan or the original production model drawing.

[0034] Reference Figure 1 , Figure 8 and Figure 9 As shown, in steps S500 and S600, specifically, the worker can measure the actual size of the finished product using a coordinate measuring machine and compare the actual size with the preset size. When the deviation between the actual size and the preset size exceeds the preset value, the production model drawing is adjusted or remade according to the deviation, and the processing is carried out again according to the adjusted or remade production model drawing.

[0035] Reference Figure 1 , Figure 8 and Figure 9As shown, the laser cutting method for stator and rotor steel sheets can adjust or remake the production model drawing according to the deviation, which plays a role in feedback compensation. The stator and / or rotor processed according to the adjusted or remade production model drawing can achieve higher processing accuracy.

[0036] Reference Figure 1 , Figure 8 and Figure 9 As shown, if the deviation between the actual size and the preset size is less than or equal to the preset value, the measured finished product is determined to meet the processing requirements, and the processing plan and production model drawing are determined to meet the requirements.

[0037] Reference Figure 2 , Figure 8 and Figure 9 As shown, it can be understood that the vision-guided laser cutting system includes a laser and a red light emitter, which is used to indicate the processing trajectory of the laser.

[0038] The laser cutting method for the stator and rotor steel sheets includes, in step S300, adjusting the relevant lines of the production model drawing in the vision positioning laser cutting system and determining the processing sequence and path of the production model drawing, including: Step S310: Control the laser to move relative to the clamping fixture 200 in the vertical direction to the preset position; Step S320: Control the operation of the red light emitter, and the red light emitter projects the processing trajectory of the laser onto the clamping fixture 200; Step S330: Adjust the machining trajectory so that it coincides with the machining edge of the clamping fixture 200 to obtain the center point coordinates of the machining of the workpiece.

[0039] Reference Figure 2 , Figure 8 and Figure 9 As shown, specifically, the laser is mounted above the worktable 100. When the clamping fixture 200 is clamped on the upper end of the worktable 100, the laser is positioned above the clamping fixture 200.

[0040] Reference Figure 2 , Figure 8 and Figure 9 As shown, after opening the production model diagram, the visual positioning laser cutting system can view the initial value of the center point coordinates, switch to laser processing mode, lower the laser Z-axis height to an appropriate position, select the red light function in the machine test interface, switch to the laser processing interface, that is, control the operation of the red light emitter, select the edge-following function, and check whether the laser red light exceeds the edge of the stator and rotor laser cutting fixture by modifying the center point coordinate value, that is, the red light emitter projects the laser processing trajectory onto the clamping fixture 200.

[0041] Reference Figure 2 , Figure 8 and Figure 9 As shown, when the machining trajectory projected by the red light coincides with the machining edge of the clamping fixture 200, the coordinates of the center point at this time are the coordinates of the center point of the machined part. If the machining trajectory projected by the red light exceeds the machining edge of the clamping fixture 200, the position of the center point of the machining trajectory needs to be readjusted.

[0042] Reference Figure 3 , Figure 8 and Figure 9 As shown, it is understood that the vision positioning laser cutting system includes control software; specifically, the control software is FTLasercutvision laser cutting software.

[0043] In step S300 of the laser cutting method for the stator and rotor steel sheets, the production model drawing is imported into the vision positioning laser cutting system, and the relevant lines of the production model drawing are adjusted in the vision positioning laser cutting system, including the following steps: Step S340: Convert the production model drawing into a format compatible with the control software, and open the production model drawing using the control software. Step S350: Merge relevant lines in the production model diagram in the control software to make the processing path continuous and complete.

[0044] Reference Figure 3 , Figure 8 and Figure 9 As shown, in step S340, the operator can use CAD drawing software to draw the production model drawing. After drawing the dimensions of the stator and rotor parts using CAD drawing software, save it as a DWG format file. Open the DWG file and save it as a DXF format file. Open the FTLasercutvision laser cutting software, switch the mode to graphic import mode, import the DXF file, and then change it to FTP format. At this point, the stator and rotor file format conversion is complete.

[0045] Reference Figure 3 , Figure 8 and Figure 9 As shown, in step S350, the operator can select to merge the relevant lines of the production model drawing in the processing mode interface of the FTLasercutvision laser cutting software, so that the production model drawing becomes a whole. For example, by merging the relevant lines, the breakpoints, intersecting or overlapping lines in the production model drawing can be eliminated.

[0046] Reference Figure 3 , Figure 8 and Figure 9As shown, the laser cutting method for stator and rotor steel sheets can make the processing path more continuous and complete by merging related lines, thereby processing the material sheets into stators and / or rotors through laser cutting.

[0047] Reference Figure 4 , Figure 8 and Figure 9 As shown, it can be understood that the laser cutting method for the stator and rotor steel sheets, in step S300, involves formulating the processing sequence and processing path of the production model drawing to form a processing plan, including the following steps: Step S360: Set the machining path and machining sequence according to the machining requirements of the stator and / or rotor; Step S370: Simulate the processing path to verify whether the processing sequence is accurate; Step S380: Once the processing sequence is determined to be accurate, a processing plan is formed.

[0048] Reference Figure 4 , Figure 8 and Figure 9 As shown, in the FTLasercutvision laser cutting software, the operator manually sets the processing path according to the processing requirements in the manual path setting interface and confirms the processing sequence. In the simulated processing path interface, the operator simulates the manually set processing path to verify the accuracy of the processing sequence. After confirming that there are no errors, the machine is started to cut and process the stator and rotor silicon steel sheets.

[0049] Reference Figure 4 , Figure 8 and Figure 9 As shown, if interference or defects that cannot be processed occur during the simulation of the processing path, it is determined that the processing sequence is inaccurate and the processing path and processing sequence need to be readjusted.

[0050] Reference Figure 4 , Figure 8 and Figure 9 As shown, the laser cutting method for the stator and rotor steel sheets can be verified by simulation to confirm the correctness of the processing sequence and path, i.e., to check the rationality of the processing scheme, until a reasonable processing scheme is output. This helps to reduce the processing steps of the stator and / or rotor, thereby improving the laser cutting efficiency of the stator and / or rotor.

[0051] Reference Figure 5 , Figure 8 and Figure 9 As shown, it can be understood that in step S600 of the laser cutting method for the stator and rotor steel sheets, when the deviation between the actual size and the preset size exceeds the preset value, the production model drawing is adjusted or remade according to the deviation, including the following steps: Step S610: When the deviation between a single actual size and a preset size exceeds a preset value; Step S610: Open the production model drawing in the 2D drawing software, adjust the offset value of the corresponding lines, integrate the relevant lines, delete the original corresponding lines, and obtain the adjusted production model drawing.

[0052] Reference Figure 5 , Figure 8 and Figure 9 As shown, if the staff determines that the individual dimensions of the stator and rotor silicon steel sheets measured by the coordinate measuring machine differ significantly from the dimensional tolerance required by the drawing, the production model drawing in CAD format can be imported into the CAD drawing software, and the following method can be used for adjustment: using the offset function in the CAD drawing software, this method is suitable when the actual size of the actual cut graphic, the preset size, or the deviation between the two is known, and both the actual size and the preset size are integers. After using this method, the original graphic should be deleted.

[0053] Reference Figure 5 , Figure 8 and Figure 9 As shown, after the staff performs the offset, they can integrate the relevant lines of the production model diagram to make the relevant lines of the production model diagram complete and continuous, which can effectively specify the corresponding processing trajectory.

[0054] Reference Figure 6 , Figure 8 and Figure 9 As shown, it can be understood that in step S600 of the laser cutting method for the stator and rotor steel sheets, when the deviation between the actual size and the preset size exceeds the preset value, the production model drawing is adjusted or remade according to the deviation, including the following steps: Step S630: When the deviation between multiple actual dimensions and preset dimensions exceeds the preset value; Step S640: Open the production model drawing in the 2D drawing software, and redraw the production model drawing based on the deviations between multiple actual dimensions and preset dimensions.

[0055] Reference Figure 6 , Figure 8 and Figure 9 As shown, if the staff determines that the multiple dimensions of the stator and rotor silicon steel sheets measured by the coordinate measuring machine differ significantly from the dimensional tolerances required by the drawings, the production model drawing in CAD format can be imported into CAD drawing software. The drawing can then be redrawn at the center point of the original drawing, and the original drawing can be deleted to obtain the redrawn production model drawing.

[0056] Reference Figure 7 , Figure 8 and Figure 9As shown, it can be understood that in step S600 of the laser cutting method for the stator and rotor steel sheets, when the deviation between the actual size and the preset size exceeds the preset value, the production model drawing is adjusted or remade according to the deviation, including the following steps: Step S650: When the deviation between multiple actual dimensions and preset dimensions exceeds the preset value; Step S660: Open the production model drawing in the 2D drawing software, adjust the offset values ​​of multiple corresponding lines, integrate the relevant lines, delete the original corresponding lines, and obtain the adjusted production model drawing.

[0057] Reference Figure 7 , Figure 8 and Figure 9 As shown, if the staff determines that the multiple dimensions of the stator and rotor silicon steel sheets measured by the coordinate measuring machine differ significantly from the dimensional tolerances required by the drawing, the part drawing in CAD format can be imported into the CAD drawing software and adjusted using the following method: modify the dimensions of a single graphic, that is, offset multiple corresponding lines, and after integrating the relevant lines, delete the original graphic to obtain the adjusted production model drawing.

[0058] Reference Figure 7 , Figure 8 and Figure 9 As shown, it can be understood that in step S600 of the laser cutting method for the stator and rotor steel sheets, when the deviation between the actual size and the preset size exceeds the preset value, the production model drawing is adjusted or remade according to the deviation, including the following steps: When the deviation between the actual size and the preset size exceeds the preset value, the production model drawing is adjusted or remade according to the deviation, including: Open the production model diagram in the control software, cut the corresponding lines with an intaglio cut, and the intaglio cut value is the deviation value to obtain the adjusted production model diagram; Alternatively, open the production model diagram in the control software, make a positive cut on the corresponding lines, and the value of the positive cut is the deviation value to obtain the adjusted production model diagram.

[0059] Reference Figure 7 , Figure 8 and Figure 9 As shown, after the staff opens the file option in the FTLasercutvision laser cutting software toolbar, opens the FTP format file, and switches to the processing mode, there are two situations for graphic size refinement: (1) Refinement of a single graphic size: select the single graphic to be modified, open the toolbar tool option, find the calculation cutting trajectory, select the intaglio or convex cutting method, and enter the compensation value to be modified. (2) Refinement of multiple graphic sizes: select multiple graphics to be modified, open the toolbar tool option, find the calculation cutting trajectory, select the intaglio or convex cutting method, and enter the compensation value to be modified.

[0060] Reference Figure 7 , Figure 8 and Figure 9 As shown, it should be noted that intaglio cutting adjusts the actual cutting size within the graphic and is generally used to reduce the graphic size. Positive cutting adjusts the actual cutting size outside the graphic and is generally used to enlarge the graphic size. In the FTLasercutvision laser cutting software, the intaglio and positive cutting methods adjust the cut compensation value, which can be accurate to 0.001.

[0061] Reference Figure 8 and Figure 9 As shown, it can be understood that the clamping fixture 200 has a fixture panel 210, a stator support plate 220 and a rotor support plate 230 arranged and connected sequentially from the outside to the inside; the fixture panel 210, the stator support plate 220 and the rotor support plate 230 are all located on the same horizontal plane.

[0062] Reference Figure 8 and Figure 9 As shown, the tooling panel 210, stator support plate 220, and rotor support plate 230 are all laser-cut from 2mm stainless steel plates. The outer dimensions of the tooling panel 210 are determined by the dimensions of the silicon steel sheet blank. Typically, the blank is used as the center, and each side is extended by 10mm for positioning and clamping on the worktable 100. The stator support plate 220 and rotor support plate 230 are designed according to the profile features of the stator and rotor, respectively. They are offset by 1mm from the center along the cutting contour line, which can both avoid the laser cutting position and effectively support each feature structure to ensure cutting accuracy.

[0063] Reference Figure 8 and Figure 9 As shown, the clamping fixture 200 is designed in an integrated manner based on the structural characteristics of the stator and rotor of the same product. The stator and rotor silicon steel sheets are laser cut using a single set of cutting fixtures. One processing sheet can cut one stator lamination and one rotor lamination, reducing the time for fixture switching and loading, and effectively improving the utilization rate of materials and cutting efficiency.

[0064] Reference Figure 8 and Figure 9 As shown, it can be understood that the workbench 100 includes a tooling support block 130 and two parallel support seats 110; the two support seats 110 are respectively connected to the two ends of the tooling support block 130, the upper end of the support seat 110 is provided with a slide rail 120, the two ends of the tooling support block 130 are respectively slidably connected to the two slide rails 120, and the tooling panel 210 is fixed on the upper part of the tooling support block 130.

[0065] Reference Figure 8 and Figure 9As shown, when changing the cutting shape of different products, only the clamping fixture 200 needs to be replaced, and the worktable 100 of the device does not need to be replaced. The worktable 100 includes two fixture support blocks 130. The two fixture support blocks 130 have grooves on their opposite sides. The grooves can be used to snap the fixture panel 210 to achieve a stable connection of the fixture panel 210.

[0066] Reference Figure 8 and Figure 9 As shown, specifically, the tooling support block 130 includes a lower clamping block 131 and an upper clamping block. The lower clamping block 131 is slidably connected to the slide rail 120. The upper clamping block and the lower clamping block 131 together form a groove. The upper clamping block and the lower clamping block 131 can be detached by means of threaded connection. The tooling panel 210 is placed in the groove formed by the lower clamping block 131 and the upper clamping block. By locking the upper clamping block and the lower clamping block 131, the tooling support block 130 and the tooling panel 210 are locked.

[0067] Reference Figure 8 and Figure 9 As shown, the two tooling support blocks 130 can slide along the slide rail 120 to limit the ends of the tooling panel 210. The worktable 100 also includes a stop block 140, which is slidably mounted on the slide rail 120. The stop block 140 limits the tooling support blocks 130, thereby limiting the tooling panel 210.

[0068] Reference Figure 8 and Figure 9 As shown, the workbench 100 also includes a material drop box 150, which is located below the tooling panel 210 and is slidably connected between the support seats 110 on both sides. The material drop box 150 has a drawer-type structure, which is convenient for picking up and putting in, and can prevent workers from being scratched by sharp parts of waste materials during waste collection and processing, thereby improving operational safety.

[0069] Reference Figure 8 and Figure 9 As shown, the workbench 100 also includes a clamp 160, which is mounted on the support base 110 and can limit the material box 150. During the cutting process, the clamp 160 is closed to fix the material box 150. When it is necessary to remove the waste material, the clamp 160 is opened and the material box 150 can be pulled out.

[0070] Reference Figure 8 and Figure 9 As shown, the workbench 100 also includes a dust collection fixing plate and a dust collection port 170. The two ends of the dust collection fixing plate are connected to the sides of the support base 110. The dust collection port 170 has a trumpet-shaped structure. The large diameter end of the dust collection port 170 is connected to the dust collection fixing plate. The dust generated during the cutting process can be purified by an external air purification device connected to the trumpet-shaped dust collection port 170.

[0071] Reference Figure 8 and Figure 9 As shown, during operation, the operator can place the edges of both ends of the tooling panel 210 into the grooves of the two tooling support blocks 130 respectively, and move the two tooling support blocks 130 along the slide rail 120 to the appropriate position. The stop block 140 limits one of the tooling support blocks 130, and finally locks the tooling panel 210 with the tooling support block 130.

[0072] Reference Figure 8 and Figure 9 As shown, the worker then places the pre-uncoiled and cut single-piece processing sheet on the upper surface of the tooling panel 210, places the dropping box 150 under the tooling panel 210, closes the clamp 160 to fix the dropping box 150, and then begins laser cutting. The laser-cut stator and rotor silicon steel sheets remain on the upper surface of the tooling panel 210, and the cut waste falls into the dropping box 150. The clamp 160 is opened to remove the dropping box 150, and finally the dust that has fallen into the dropping box 150 is removed and purified through the dust suction port 170.

[0073] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A laser cutting method for stator and rotor steel sheets, applied to the laser cutting of stators and / or rotors, characterized in that, The laser cutting method for the stator and rotor steel sheets includes: According to the preset dimensions of the stator and / or the rotor, a clamping fixture and a worktable (100) are manufactured. The worktable (100) is used to position the clamping fixture, and the clamping fixture is used to position the processing sheet. A production model drawing is made according to the preset dimensions of the stator and / or the rotor; The production model diagram is imported into the vision positioning laser cutting system. The relevant lines of the production model diagram are adjusted in the vision positioning laser cutting system, and the processing sequence and processing path of the production model diagram are determined to form a processing plan. Position and connect the clamping fixture to the worktable (100), position and connect the processing sheet to the clamping fixture, and perform laser cutting on the processing sheet according to the processing plan to obtain the finished product; Measure the actual dimensions of the finished product and compare the actual dimensions with the preset dimensions; When the deviation between the actual size and the preset size exceeds the preset value, the production model drawing is adjusted or remade according to the deviation, and the processing is carried out again according to the adjusted or remade production model drawing; The visual positioning laser cutting system includes a laser and a red light emitter, the red light emitter being used to indicate the processing trajectory of the laser; The step of adjusting the relevant lines of the production model drawing in the vision positioning laser cutting system and determining the processing sequence and path of the production model drawing includes: Control the laser to move relative to the clamping fixture in the vertical direction to a preset position; The operation of the red light emitter is controlled, and the red light emitter projects the processing trajectory of the laser onto the clamping fixture; Adjust the machining trajectory so that it coincides with the machining edge of the clamping fixture to obtain the coordinates of the center point of the machining of the workpiece; The visual positioning laser cutting system includes control software; The step of importing the production model drawing into the vision positioning laser cutting system and adjusting the relevant lines of the production model drawing in the vision positioning laser cutting system includes: The production model diagram is converted into a format compatible with the control software, and the production model diagram is opened using the control software. The relevant lines in the production model diagram are merged in the control software to make the processing path continuous and complete. The process involves defining the processing sequence and path for the production model diagram to form a processing plan, including: The machining path and machining sequence are set according to the machining requirements of the stator and / or the rotor; The processing path is simulated to verify whether the processing sequence is accurate; Once the processing sequence is determined to be accurate, the processing plan is formed. The step of adjusting or remaking the production model drawing based on the deviation when the actual size deviates from the preset size by a preset value includes: Open the production model diagram in the control software, and perform intaglio cutting on the corresponding lines. The value of the intaglio cutting is the value of the deviation, thus obtaining the adjusted production model diagram. Alternatively, the production model diagram can be opened in the control software, and the corresponding lines can be convexly cut, with the convex cut value being the deviation value, to obtain the adjusted production model diagram.

2. The laser cutting method for stator and rotor steel sheets according to claim 1, characterized in that, The step of adjusting or remaking the production model drawing based on the deviation when the actual size deviates from the preset size by a preset value includes: When the deviation between a single actual size and the preset size exceeds the preset value; Open the production model diagram in a 2D drawing software, offset the corresponding lines by the deviation value, integrate the relevant lines, delete the original corresponding lines, and obtain the adjusted production model diagram.

3. The laser cutting method for stator and rotor steel sheets according to claim 1, characterized in that, The step of adjusting or remaking the production model drawing based on the deviation when the actual size deviates from the preset size by a preset value includes: When the deviations of multiple actual dimensions from the preset dimensions exceed the preset value; Open the production model drawing in the 2D drawing software, and redraw the production model drawing based on the deviations between the actual dimensions and the preset dimensions.

4. The laser cutting method for stator and rotor steel sheets according to claim 1, characterized in that, The step of adjusting or remaking the production model drawing based on the deviation when the actual size deviates from the preset size by a preset value includes: When the deviations of multiple actual dimensions from the preset dimensions exceed the preset value; Open the production model diagram in a 2D drawing software, offset multiple corresponding lines by the deviation value, integrate the relevant lines, delete the original corresponding lines, and obtain the adjusted production model diagram.

5. The laser cutting method for stator and rotor steel sheets according to claim 1, characterized in that, The clamping fixture has a fixture panel (210), a stator support plate (220), and a rotor support plate (230) arranged and connected sequentially from the outside to the inside; the fixture panel (210), the stator support plate (220), and the rotor support plate (230) are all located on the same horizontal plane.

6. The laser cutting method for stator and rotor steel sheets according to claim 5, characterized in that, The workbench (100) includes a tooling support block (130) and two parallel support seats (110); the two support seats (110) are respectively connected to the two ends of the tooling support block (130), the upper end of the support seat (110) is provided with a slide rail (120), the two ends of the tooling support block (130) are respectively slidably connected to the two slide rails (120), and the tooling panel (210) is fixed on the upper part of the tooling support block (130).

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