Automatic positioning processing method for micro motor rotor commutator segment insulation slot

Abstract

The present application belongs to the field of high-efficiency numerical control machining technology, and relates to an automatic positioning machining method for the insulation slot between the commutator segments of a micro motor rotor, comprising the following steps: building a system according to the composition of the automatic positioning machining method, determining parameter information, building a three-dimensional model of the part, making a corresponding adapter tool, resetting the system, rotating, and taking a photo of the position of the commutator segment of the rotor commutator assembly by a visual recognition camera; identifying the photo by visual recognition analysis software, calculating and driving the first servo motor to rotate the correction angle by a PLC controller, driving the linear guide to execute a single slotting action by a slotting cutter, retreating the cutter, feeding radially by a single radial slotting depth, repeating the slotting action, repeating the above steps, completing the slotting machining of the adjacent insulation slots, and further completing the slotting machining of all the insulation slots. The method realizes the automatic determination of the position of the insulation slot between the commutator segments of the rotor and the automatic forming machining of the insulation slot, reduces the production cost, and improves the work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of high-efficiency CNC machining technology, and in particular relates to an automatic positioning machining method for the insulation groove between the commutator segments of a micro motor rotor. Background Technology

[0002] Micromotors are widely used in the instrumentation industry, aerospace industry, and electronics and electrical appliance industry. The rotor commutator is a key component of micromotors, which directly affects the operating performance of micromotors. The machining quality of the insulation grooves between the commutator segments on the rotor commutator directly affects the operating performance of the commutator.

[0003] Currently, the main method for machining the insulation slots between rotor commutator segments is "manual alignment and slotting machine machining." This requires operators to fix the rotor commutator on the rotary table of a conventional slotting machine and manually align and slot each segment by sight. This method is highly dependent on the operator's skill level, resulting in poor consistency and a low pass rate for the machined insulation slots. Furthermore, it is inefficient and costly.

[0004] To address the problems of low production efficiency, high production costs, poor processing quality and poor processing consistency caused by manual operation in existing methods, an automatic positioning processing method for the insulation slots between commutator segments of micro-motors has been invented to achieve automated and precise processing. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic positioning and processing method for the insulation groove between the commutator segments of a micro motor rotor. This method realizes the automatic determination of the position of the insulation groove between the commutator segments and the automatic forming and processing of the insulation groove, thereby reducing production costs, improving work efficiency, and overcoming the bottlenecks of poor consistency and low pass rate in the production process of rotor commutators.

[0006] This invention is achieved through the following technical solution:

[0007] An automatic positioning and machining method for the insulation slots between commutator segments of a micro motor rotor includes the following steps:

[0008] Step 1: Build the system according to the components of the automatic positioning and processing method;

[0009] Step 2: Input the parameter information of the micro-motor rotor commutator assembly of the insulation groove to be processed after glue filling into the visual recognition and analysis software, and build a three-dimensional model of the part in the visual recognition and analysis software;

[0010] Step 3: Create the corresponding adapter tooling based on the parameter information;

[0011] Step 4: After applying the glue, fix the rotor commutator assembly of the insulation groove to be processed onto the rotary motion fixing fixture using the corresponding adapter fixture, and reset the system.

[0012] Step 5: The first servo motor drives the rotary motion fixture to perform a rotational action, and the visual recognition camera takes pictures of the position of the commutator segments of the rotor commutator assembly;

[0013] Step 6: The visual recognition and analysis software identifies the captured photos, and the PLC controller calculates and drives the first servo motor to rotate and correct the angle, so that the center line of the insulating groove coincides with the center line of the grooving tool tip.

[0014] Step 7: The PLC controller drives the linear guide rail to drive the one-piece grooving tool to perform a single grooving action, retract the tool, feed radially to a single radial grooving depth, and then repeat the grooving action.

[0015] Step 8: After completing a single grooving action, the first servo motor drives the rotor commutator assembly to rotate. The rotation action is the same as in step 5. Repeat steps 5 to 7 to complete the grooving of adjacent insulation grooves.

[0016] Step 9: Repeat step 8 to complete the grooving process for all insulation grooves;

[0017] Step 10: The first servo motor drives the rotor commutator assembly to perform a rotational action. The vision recognition module is used to determine whether the grooving work has been completed. For the ungrooved positions, a grooving action is performed.

[0018] Step 11: After completing all the grooving operations, the system will flash an indicator light. Remove the completed component and install the new component to be processed.

[0019] Furthermore, the parameter information mentioned in step 2 includes the structural dimensions of the micro-motor rotor commutator assembly, the number of grooved insulating grooves, the length and depth of the grooved processing, and the depth of a single grooved operation.

[0020] Furthermore, when making the corresponding adapter tool in step 2, the grooving motion trajectory of the grooving tool should be avoided.

[0021] Furthermore, the rotation angle of the rotation action in step 5 depends on the number of insulating grooves processed by the grooving.

[0022] Furthermore, step 6 includes the following sub-steps:

[0023] Step 6.1: The visual recognition and analysis software identifies the captured photos to determine whether they are valid photos, i.e., whether the insulating groove is captured in the photo;

[0024] Step 6.2: If the photo taken in step 6.1 is not a valid photo, the first servo motor is driven to perform a rotation action, and the above photo taking and recognition actions are repeated.

[0025] Step 6.3: If the photo taken in step 6.2 is a valid photo, the visual recognition and analysis software analyzes the valid photo to obtain the position and angle information of the center line of the insulation groove, and feeds the results back to the PLC controller of the electrical control system.

[0026] Step 6.4: The PLC controller drives the first servo motor to rotate the angle calculated in step 6.3, and corrects it so that the center line of the insulating groove coincides with the center line of the grooving tool tip.

[0027] Furthermore, the visual recognition camera can obtain the position patterns of different insulating slots between rotor commutator segments in real time, and the visual recognition analysis software determines the accurate position of the insulating slots that need to be etched by analyzing the information of the position patterns.

[0028] Furthermore, in step 7, the radial groove depth of a single groove is a set value, and the total number of grooves is the groove depth divided by the single groove depth.

[0029] The advantages and positive effects of this invention are:

[0030] (1) The automatic positioning and processing method of the present invention realizes the automatic determination of the position of the insulation groove between rotor commutator segments and the automatic forming and processing of the insulation groove, which reduces production costs, improves work efficiency, and realizes automated and precise processing.

[0031] (2) This method can be extended to the forming and processing of the insulation groove between the rotor commutator segments of micro motors of different sizes and specifications, and has broad application prospects and application value. Attached Figure Description

[0032] Figure 1 This is a flowchart illustrating the implementation process of the automatic positioning and machining method of the present invention.

[0033] Figure 2 This is a schematic diagram showing the location of the insulation slots between the commutator segments of a micro-motor rotor.

[0034] Figure 3 This is a schematic diagram of the system for implementing the automatic positioning and machining method of the present invention.

[0035] This includes the following reference numerals: 1-commutator, 2-insulating groove, 3-adhesive layer, 4-frame, 5-visual recognition camera, 51-visual recognition camera mounting bracket, 6-first servo motor, 61-first mounting bracket, 7-grooving tool, 8-linear guide rail, 81-linear guide rail mounting bracket, 9-second servo motor. Detailed Implementation

[0036] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0037] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Example 1

[0039] As attached Figure 1 The flowchart shown is an implementation flow chart of the automatic positioning machining method of the present invention. An automatic positioning machining method for the insulation groove between commutator segments of a micro-motor rotor includes the following steps:

[0040] Step 1: Build the system according to the components of the automatic positioning and processing method;

[0041] Step 2: Input the parameter information of the micro motor rotor commutator assembly of the insulation groove 2 to be processed after glue filling into the visual recognition and analysis software. Build a three-dimensional model of the part in the visual recognition and analysis software. The parameter information includes the structural dimensions of the micro motor rotor commutator assembly, the number of grooved insulation grooves 2, the length and depth of the grooved processing, and the depth of a single grooved process.

[0042] Step 3: Based on the parameter information, make the corresponding adapter tooling, which should avoid the grooving motion trajectory of the grooving tool 7;

[0043] Step 4: After applying the glue, fix the rotor commutator assembly of the insulation groove 2 to be processed onto the rotary motion fixing fixture using the corresponding adapter fixture, and reset the system.

[0044] Step 5: The first servo motor 6 drives the rotary motion fixture to perform a rotation action, and the visual recognition camera 5 takes pictures of the position of the rotor commutator segment 1; the rotation angle of the rotation action depends on the number of insulating grooves processed by the grooving. Assuming the number is N, the single rotation angle is 360° / N.

[0045] Step 6: The visual recognition analysis software identifies the captured photos, and the PLC controller calculates and drives the first servo motor 6 to rotate and correct the angle so that the center line of the insulating groove coincides with the center line of the cutting tool tip 7.

[0046] like Figure 2 The diagram shows the location of the insulating groove 2 between the two commutator segments 1 of the micro motor rotor. The insulating groove 2 is located between the two commutator segments 1, and the bottom layer of the insulating groove 2 is the adhesive layer 3.

[0047] Step 6 includes the following sub-steps: Step 6.1: The visual recognition analysis software identifies the captured photo to determine whether it is a valid photo, i.e., whether the insulating groove 2 is captured in the photo; Step 6.2: If the photo captured in Step 6.1 is not a valid photo, the first servo motor 6 is driven to perform a rotation action, repeating the above-mentioned photo-taking and recognition actions; Step 6.3: If the photo captured in Step 6.2 is a valid photo, the visual recognition analysis software analyzes the valid photo to obtain the centerline position and angle information of the insulating groove 2, and simultaneously feeds the results back to the PLC controller of the electrical control system; Step 6.4: The PLC controller drives the first servo motor 6 to rotate the angle calculated in Step 6.3, correcting it so that the centerline position of the insulating groove 2 coincides with the centerline position of the cutting tool tip 7;

[0048] Step 7: The PLC controller drives the linear guide rail 8 to drive the one-piece grooving tool 7 to perform a single grooving action; the radial grooving depth of the single grooving is the set value, the tool is retracted, and after the radial feed of the single radial grooving depth, the grooving action is repeated. The total number of grooving is the grooving depth divided by the single grooving depth.

[0049] Step 8: After completing a single grooving action, the first servo motor 6 drives the rotor commutator assembly to rotate. The rotation action is the same as in step 5. Repeat steps 5 to 7 to complete the grooving process of the adjacent insulating groove 2.

[0050] Step 9: Repeat step 8 to complete the grooving process for all insulation grooves 2;

[0051] Step 10: The first servo motor 6 drives the rotor commutator assembly to perform a rotation action. The visual recognition part is used to determine whether the grooving work has been completed. For the ungrooved positions, a grooving action is performed.

[0052] Step 11: After completing all the grooving operations, the system will flash an indicator light. Remove the completed component and install the new component to be processed.

[0053] Example 2

[0054] like Figure 3The system shown is an automatic positioning and machining method for insulating grooves between commutator segments of a micro motor rotor, including a frame 4, a vision recognition part, a machining and grooving part, and an electrical control system.

[0055] The visual recognition section, the machining and grooving section, and the electrical control system are all mounted on the frame 4. The visual recognition section is fixed on the frame 4 by a visual recognition camera mounting bracket 51. The visual recognition section includes a visual recognition camera 5 and visual recognition analysis software. The function of the visual recognition camera 5 is to obtain the position patterns of different insulation grooves 2 of the rotor commutator 1 in real time. The function of the visual recognition analysis software is to accurately determine the position of the insulation groove to be etched by analyzing the light, shadow, color and other information of the image captured by the camera.

[0056] The grooving part includes a workpiece mounting drive part and a grooving part. The workpiece mounting drive part includes a first servo motor 6, which is mounted on the frame 4 via a first fixed bracket 61. The grooving part includes a grooving tool 7 and a linear guide rail 8. The tool is connected to a cylinder, which drives the tool to move up and down reciprocally to perform the grooving action. The linear guide rail 8 is mounted on the frame 4 via a linear guide rail fixed bracket 81. The cylinder is driven to move back and forth by a lead screw nut driven by a second servo motor 9 to achieve the alignment of the grooving tool 7 with the workpiece.

[0057] The electrical control system is a PLC control system. The PLC control system is responsible for controlling the rotation of the rotor commutator assembly and the X and Y direction movement of the grooving tool 7. The function of the second servo motor 9 and the linear guide rail 8 is to receive instructions from the PLC control system and execute them accordingly.

[0058] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept, and these all fall within the protection scope of the present invention.

Claims

1. An automatic positioning and machining method for the insulation groove between commutator segments of a micro-motor rotor, characterized in that, Includes the following steps: Step 1: Build the system according to the components of the automatic positioning and processing method; Step 2: Input the parameter information of the micro motor rotor commutator assembly of the insulation groove (2) to be processed after glue filling into the visual recognition analysis software, and build a three-dimensional model of the part in the visual recognition analysis software; the parameter information includes the structural dimensions of the micro motor rotor commutator assembly, the number of grooved insulation grooves (2), the length and depth of the grooved processing, and the depth of a single groove; when making the corresponding adapter tool, the grooved action trajectory of the grooved tool (7) should be avoided; Step 3: Create the corresponding adapter tooling based on the parameter information; Step 4: After the glue is applied, the rotor commutator assembly of the insulation groove (2) to be processed is fixed to the rotary motion fixing fixture using the corresponding transfer tool, and the system is reset; Step 5: The first servo motor (6) drives the rotary motion fixture to perform a rotation action, and the visual recognition camera (5) takes pictures of the position of the commutator segment (1) of the rotor commutator assembly; the rotation angle of the rotation action depends on the number of grooving insulation grooves (2); the visual recognition camera (5) can obtain the position pattern of different insulation grooves (2) between the rotor commutator segments (1) in real time, and the visual recognition analysis software determines the accurate position of the insulation groove (2) to be etched by analyzing the information of the position pattern; Step 6: The visual recognition analysis software identifies the captured photos, and the PLC controller calculates and drives the first servo motor (6) to rotate and correct the angle so that the center line position of the insulating groove (2) coincides with the center line position of the cutting tool (7). Step 6 includes the following sub-steps: Step 6.1: The visual recognition analysis software identifies the captured photos and determines whether they are valid photos, i.e. whether the insulating groove (2) is captured in the photos; Step 6.2: If the photo taken in step 6.1 is not a valid photo, the first servo motor (6) is driven to perform a rotation action, and the above photo taking and identification actions are repeated; Step 6.3: If the photo taken in step 6.2 is a valid photo, the visual recognition analysis software analyzes the valid photo to obtain the position and angle information of the center line of the insulation groove (2), and feeds the results back to the PLC controller of the electrical control system. Step 6.4: The PLC controller drives the first servo motor (6) to rotate the angle calculated in step 6.3, and corrects it so that the center line position of the insulating groove (2) coincides with the center line position of the cutting tool tip (7); Step 7: The PLC controller drives the linear guide rail (8) to drive the integrated grooving tool (7) to perform a single grooving action, retract the tool, and then feed radially to the single radial grooving depth before repeating the grooving action; the radial grooving depth of the single grooving is a set value, and the total number of groovings is the grooving depth divided by the single grooving depth; Step 8: After completing a single grooving action, the first servo motor (6) drives the rotor commutator assembly to rotate. The rotation action is the same as in step 5. Repeat steps 5 to 7 to complete the grooving of adjacent insulating grooves. Step 9: Repeat step 8 to complete the grooving process for all insulation grooves; Step 10: The first servo motor (6) drives the rotor commutator assembly to perform rotation. The visual recognition module is used to determine whether the grooving work has been completed. For the ungrooved positions, the grooving action is performed. Step 11: After completing all the grooving operations, the system will flash an indicator light. Remove the completed component and install the new component to be processed. The automatic positioning processing method implementation system includes a frame (4), a vision recognition part, a processing groove part, and an electrical control system. The vision recognition part, the processing groove part, and the electrical control system are all installed on the frame (4). The vision recognition part is fixed on the frame (4) by a vision recognition camera fixing bracket (51). The vision recognition part includes a vision recognition camera (5) and vision recognition analysis software. The function of the vision recognition camera (5) is to obtain the position pattern of different insulation grooves (2) of the rotor commutator (1) in real time. The function of the vision recognition analysis software is to accurately determine the position of the insulation groove to be etched by analyzing the light and shadow color information of the image captured by the camera. The grooving part includes a workpiece mounting drive part and a grooving part. The workpiece mounting drive part includes a first servo motor (6), which is mounted on the frame (4) via a first fixed bracket (61). The grooving part includes a grooving tool (7) and a linear guide rail (8). The tool is connected to a cylinder, which drives the tool to move up and down reciprocally to perform the grooving action. The linear guide rail (8) is mounted on the frame (4) via a linear guide rail fixed bracket (81). The cylinder is driven to move back and forth by a lead screw nut driven by a second servo motor (9) to achieve the alignment of the grooving tool (7) with the workpiece. The electrical control system is a PLC control system. The PLC control system is responsible for controlling the rotation of the rotor commutator assembly and the X and Y direction movement of the grooving tool (7). The function of the second servo motor (9) and the linear guide (8) is to receive instructions from the PLC control system and execute them accordingly.

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