CN116700138A - Flywheel pin hole processing method - Google Patents
Flywheel pin hole processing method Download PDFInfo
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- CN116700138A CN116700138A CN202310747805.1A CN202310747805A CN116700138A CN 116700138 A CN116700138 A CN 116700138A CN 202310747805 A CN202310747805 A CN 202310747805A CN 116700138 A CN116700138 A CN 116700138A
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- 238000003672 processing method Methods 0.000 title claims abstract description 14
- 238000003754 machining Methods 0.000 claims abstract description 105
- 238000012545 processing Methods 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000013461 design Methods 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000011960 computer-aided design Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35349—Display part, programmed locus and tool path, traject, dynamic locus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
Abstract
The invention discloses a flywheel pin hole processing method, which mainly comprises the following steps of determining the center of a flywheel as a coordinate origin (0, 0); the method mainly comprises the steps that coordinates (Xn, yn) are respectively determined at positions needing to be provided with pin holes on a flywheel, wherein n is a positive integer; selecting a reference point outside the flywheel, wherein the coordinates of the reference point are (X0, Y0); calculating a vector from the reference point to each pin hole position, and determining a path of movement of the tool during processing of each pin hole; the method comprises the steps of placing a cutter at a reference point position, moving the cutter to a position along a path of a first pin hole to machine the first pin hole, returning to the reference point position after machining, moving the cutter to a position along a path of a second pin hole to machine the second pin hole, returning to the reference point position after machining, and repeating the operations until all pin holes are machined.
Description
Technical Field
The invention belongs to the technical field related to flywheel machining, and particularly relates to a flywheel pin hole machining method.
Background
The flywheel is a disk-shaped part with a large moment of inertia, which acts like an energy storage, and is required for both gasoline engines, diesel engines and reciprocating compressors, or else the machine will not operate properly, for which the flywheel is critical. The flywheel needs to be machined and pinhole opened before assembly, as shown in fig. 1, 8 uniformly arranged pinholes are required to be formed at the edge of the flywheel, the common machining method at present is to sequentially machine along the circumferential surface, and in the actual machining process, the positions of the front pinholes are accurate, but along with continuous movement of a cutter, the positions of the rear pinholes deviate, so that the quality of the flywheel is affected.
Disclosure of Invention
The invention aims to provide a flywheel pin hole processing method, which aims to solve the problems that the positions of the front pin holes are accurate, but the positions of the rear pin holes deviate along with continuous movement of a cutter, and the quality of a flywheel is influenced.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a flywheel pin hole processing method comprises the following steps of
Step one: determining a coordinate origin;
step two: determining coordinates of the hole opening position;
step three: selecting a reference point;
step four: calculating a moving path;
step five: repeating the machining operation;
determining a coordinate origin, namely determining the center of the flywheel as the coordinate origin (0, 0);
the position of the opening hole is used for determining coordinates, namely coordinates (Xn, yn) are respectively determined at positions needing to be opened with the pin hole on the flywheel, and n is a positive integer;
selecting a reference point, wherein a reference point is selected outside the flywheel, and the coordinates of the reference point are (X0, Y0);
calculating a moving path, and determining a vector from a reference point to each pin hole position as a path of moving the tool during processing of each pin hole;
repeating the machining operation, placing the cutter at the reference point position, moving the cutter to the position along the path of the first pin hole to machine the first pin hole, returning to the reference point position after machining, moving the cutter to the position along the path of the second pin hole to machine the second pin hole, returning to the reference point position after machining, and repeating the operation until all pin holes are machined.
The specific steps for determining the origin of coordinates are as follows:
s1, placing a flywheel on a processing platform, and measuring the diameter and the height of the flywheel by using a measuring tool;
s2, determining the position of the center point of the flywheel according to the measurement result, and calculating the position of the center point of the flywheel by measuring two end points of the diameter of the flywheel;
s3, marking the center point of the flywheel as a coordinate origin (0, 0), and marking the position of the coordinate origin on the surface of the flywheel by using a marking pen or other marking tools;
s4, in the machining process, aligning a coordinate system of the machining tool with a coordinate system of the flywheel, and converting the coordinate system of the machining tool into a coordinate system taking the center point of the flywheel as an origin by using a coordinate system conversion function of a numerical control machining machine;
s5, in the machining process, according to design requirements, converting the position coordinates to be machined into a coordinate system taking the center point of the flywheel as an origin.
The specific steps for respectively determining the coordinates (Xn, yn) of the positions of the required pin holes on the flywheel are as follows:
s1, placing a flywheel on a processing platform, and measuring the diameter and the height of the flywheel by using a measuring tool;
s2, determining the position of a pin hole to be opened according to design requirements, designing by using Computer Aided Design (CAD), and storing coordinate data into a digital file;
s3, importing the digital file into a control system of a numerical control machine tool, and setting machining parameters including cutter type, cutting speed, feeding speed and the like;
s4, placing a processing cutter on a processing machine tool, fixing a flywheel on a processing platform, and starting a control system of the numerical control processing machine tool;
s5, the control system accurately controls the machining tool to cut on the flywheel according to the coordinate data in the digital file to finish pin hole machining, and in the machining process, the position coordinates to be machined are converted into a coordinate system with the center point of the flywheel as an origin according to design requirements, so that coordinates (Xn, yn) of each pin hole position can be obtained, and n is a positive integer;
and S6, after the machining is finished, checking whether the size and the position accuracy of the pin hole position meet the design requirements or not by using a measuring tool, and if necessary, carrying out subsequent machining and finishing.
Selecting a reference point outside the flywheel, wherein the coordinates of the reference point are (X0, Y0) as follows:
s1, taking the axis of the flywheel or other fixed points as reference points;
s2, measuring the distance between the reference point and the flywheel center point by using a measuring tool, determining the coordinate of the reference point, calculating the coordinate of the reference point by using a trigonometric function, or measuring the horizontal and vertical distances of the reference point relative to the flywheel center point by using the measuring tool, and then calculating the coordinate of the reference point according to the coordinate of the flywheel center point;
s3, in the machining process, taking the coordinates (X0, Y0) of the reference point as an origin of a reference coordinate system, and converting the coordinate system of the machining tool into a coordinate system taking the reference point as the origin through a coordinate system conversion function of the numerical control machining machine tool;
and S4, converting the position coordinates to be processed into a coordinate system with the reference point as an origin in the processing process, and converting the coordinates with the flywheel center point as the origin into the coordinates with the reference point as the origin through calculation.
The vector from the reference point to each pin hole position is calculated and determined as a path of the tool movement during each pin hole machining, and the method comprises the following steps:
s1, determining coordinates (X0, Y0) of a reference point and coordinates (Xn, yn) of each pin hole position, wherein n is a positive integer;
s2, calculating a vector from the reference point to each pin hole position, namely (Xn-X0, yn-Y0), wherein the vector represents the direction and the distance from the reference point to the pin hole position;
s3, converting a coordinate system of the processing tool into a coordinate system taking a reference point as an origin in the processing process, so that the moving path of the tool can be expressed in a vector form;
and S4, adding the vector of each pin hole position with the moving path of the cutter in the machining process to obtain the moving path of the cutter at each pin hole position, wherein the vector of the moving path represents the direction and the distance of the cutter in the machining process.
The processing operation is repeated, and the steps are as follows:
s1, placing a processing tool at a reference point position, namely moving the tool to coordinates (X0, Y0) of the reference point;
s2, calculating a path of the cutter to be moved according to the positions of the pin holes to be machined, moving the cutter to be in place along the path of the first pin hole, and preparing for machining the first pin hole;
s3, machining a first pin hole, and machining the first pin hole by using a proper cutter and machining parameters according to design requirements;
s4, after machining is finished, moving the tool back to the reference point position, namely moving the tool to coordinates (X0, Y0);
s5, calculating a path of the cutter to be moved according to the position of the next pin hole to be machined, moving the cutter in place along the path of the second pin hole, and preparing for machining the second pin hole;
s6, machining a second pin hole, and machining the second pin hole by using a proper cutter and machining parameters according to design requirements;
s7, after machining is finished, moving the tool back to the reference point position, namely moving the tool to coordinates (X0, Y0);
s8, repeating the operation, and sequentially machining all pin holes until all machining tasks are completed.
Compared with the prior art, the invention provides a flywheel pin hole processing method, which has the following beneficial effects:
according to the pin hole processing method, the reference point moves to the processing position every time when the pin hole is processed, namely, the pin hole starts from the reference position and moves according to a preset path, so that the processing precision is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and together with the embodiments of the invention and do not constitute a limitation to the invention, and in which:
FIG. 1 is a schematic diagram of a prior art process;
FIG. 2 is a schematic process diagram of the present invention;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the present invention provides a technical solution:
a flywheel pin hole processing method comprises the following steps of
Step one: determining a coordinate origin;
step two: determining coordinates of the hole opening position;
step three: selecting a reference point;
step four: calculating a moving path;
step five: repeating the machining operation;
determining a coordinate origin, namely determining the center of the flywheel as the coordinate origin (0, 0);
the position of the opening is determined, and the coordinates (X1, Y1), (X2, Y2) and (X8, Y8) are respectively determined at 8 positions needing to be opened on the flywheel;
selecting a reference point, wherein a reference point is selected outside the flywheel, and the coordinates of the reference point are (X0, Y0);
calculating a moving path, and determining a vector from a reference point to each pin hole position as a path of moving the tool during processing of each pin hole;
repeating the machining operation, placing the cutter at the reference point position, moving the cutter to the position along the path of the first pin hole to machine the first pin hole, returning to the reference point position after machining, moving the cutter to the position along the path of the second pin hole to machine the second pin hole, returning to the reference point position after machining, and repeating the operation until 8 pin holes are machined.
For the convenience of path calculation, the coordinate value |x0|= |y0| of the reference point, that is, the included angle between the line from the reference point to the origin and the Y axis is 45 ° or 135 °.
The specific steps for determining the origin of coordinates are as follows:
s1, placing a flywheel on a processing platform, and measuring the diameter and the height of the flywheel by using a measuring tool;
s2, determining the position of the center point of the flywheel according to the measurement result, and calculating the position of the center point of the flywheel by measuring two end points of the diameter of the flywheel;
s3, marking the center point of the flywheel as a coordinate origin (0, 0), and marking the position of the coordinate origin on the surface of the flywheel by using a marking pen or other marking tools;
s4, in the machining process, aligning a coordinate system of the machining tool with a coordinate system of the flywheel, and converting the coordinate system of the machining tool into a coordinate system taking the center point of the flywheel as an origin by using a coordinate system conversion function of a numerical control machining machine;
s5, in the machining process, according to design requirements, converting the position coordinates to be machined into a coordinate system taking the center point of the flywheel as an origin.
The specific steps for respectively determining the coordinates (Xn, yn) of the positions of the required pin holes on the flywheel are as follows:
s1, placing a flywheel on a processing platform, and measuring the diameter and the height of the flywheel by using a measuring tool;
s2, determining the position of a pin hole to be opened according to design requirements, designing by using Computer Aided Design (CAD), and storing coordinate data into a digital file;
s3, importing the digital file into a control system of a numerical control machine tool, and setting machining parameters including cutter type, cutting speed, feeding speed and the like;
s4, placing a processing cutter on a processing machine tool, fixing a flywheel on a processing platform, and starting a control system of the numerical control processing machine tool;
s5, the control system accurately controls the machining tool to cut on the flywheel according to the coordinate data in the digital file to finish pin hole machining, and in the machining process, the position coordinates to be machined are converted into a coordinate system with the center point of the flywheel as an origin according to design requirements, so that coordinates (Xn, yn) of each pin hole position can be obtained, and n is a positive integer;
and S6, after the machining is finished, checking whether the size and the position accuracy of the pin hole position meet the design requirements or not by using a measuring tool, and if necessary, carrying out subsequent machining and finishing.
Selecting a reference point outside the flywheel, wherein the coordinates of the reference point are (X0, Y0) as follows:
s1, taking the axis of the flywheel or other fixed points as reference points;
s2, measuring the distance between the reference point and the flywheel center point by using a measuring tool, determining the coordinate of the reference point, calculating the coordinate of the reference point by using a trigonometric function, or measuring the horizontal and vertical distances of the reference point relative to the flywheel center point by using the measuring tool, and then calculating the coordinate of the reference point according to the coordinate of the flywheel center point;
s3, in the machining process, taking the coordinates (X0, Y0) of the reference point as an origin of a reference coordinate system, and converting the coordinate system of the machining tool into a coordinate system taking the reference point as the origin through a coordinate system conversion function of the numerical control machining machine tool;
and S4, converting the position coordinates to be processed into a coordinate system with the reference point as an origin in the processing process, and converting the coordinates with the flywheel center point as the origin into the coordinates with the reference point as the origin through calculation.
The vector from the reference point to each pin hole position is calculated and determined as a path of the tool movement during each pin hole machining, and the method comprises the following steps:
s1, determining coordinates (X0, Y0) of a reference point and coordinates (Xn, yn) of each pin hole position, wherein n is a positive integer;
s2, calculating a vector from the reference point to each pin hole position, namely (Xn-X0, yn-Y0), wherein the vector represents the direction and the distance from the reference point to the pin hole position;
s3, converting a coordinate system of the processing tool into a coordinate system taking a reference point as an origin in the processing process, so that the moving path of the tool can be expressed in a vector form;
and S4, adding the vector of each pin hole position with the moving path of the cutter in the machining process to obtain the moving path of the cutter at each pin hole position, wherein the vector of the moving path represents the direction and the distance of the cutter in the machining process.
The processing operation is repeated, and the steps are as follows:
s1, placing a processing tool at a reference point position, namely moving the tool to coordinates (X0, Y0) of the reference point;
s2, calculating a path of the cutter to be moved according to the positions of the pin holes to be machined, moving the cutter to be in place along the path of the first pin hole, and preparing for machining the first pin hole;
s3, machining a first pin hole, and machining the first pin hole by using a proper cutter and machining parameters according to design requirements;
s4, after machining is finished, moving the tool back to the reference point position, namely moving the tool to coordinates (X0, Y0);
s5, calculating a path of the cutter to be moved according to the position of the next pin hole to be machined, moving the cutter in place along the path of the second pin hole, and preparing for machining the second pin hole;
s6, machining a second pin hole, and machining the second pin hole by using a proper cutter and machining parameters according to design requirements;
s7, after machining is finished, moving the tool back to the reference point position, namely moving the tool to coordinates (X0, Y0);
s8, repeating the operation, and sequentially machining all pin holes until all machining tasks are completed.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A flywheel pin hole processing method is characterized in that: the method comprises the following steps of
Step one: determining a coordinate origin;
step two: determining coordinates of the hole opening position;
step three: selecting a reference point;
step four: calculating a moving path;
step five: repeating the machining operation;
determining a coordinate origin, namely determining the center of the flywheel as the coordinate origin (0, 0);
the position of the opening hole is used for determining coordinates, namely coordinates (Xn, yn) are respectively determined at positions needing to be opened with the pin hole on the flywheel, and n is a positive integer;
selecting a reference point, wherein a reference point is selected outside the flywheel, and the coordinates of the reference point are (X0, Y0);
calculating a moving path, and determining a vector from a reference point to each pin hole position as a path of moving the tool during processing of each pin hole;
repeating the machining operation, placing the cutter at the reference point position, moving the cutter to the position along the path of the first pin hole to machine the first pin hole, returning to the reference point position after machining, moving the cutter to the position along the path of the second pin hole to machine the second pin hole, returning to the reference point position after machining, and repeating the operation until all pin holes are machined.
2. The flywheel pin hole processing method according to claim 1, characterized in that: the specific steps for determining the origin of coordinates are as follows:
s1, placing a flywheel on a processing platform, and measuring the diameter and the height of the flywheel by using a measuring tool;
s2, determining the position of the center point of the flywheel according to the measurement result, and calculating the position of the center point of the flywheel by measuring two end points of the diameter of the flywheel;
s3, marking the center point of the flywheel as a coordinate origin (0, 0), and marking the position of the coordinate origin on the surface of the flywheel by using a marking pen or other marking tools;
s4, in the machining process, aligning a coordinate system of the machining tool with a coordinate system of the flywheel, and converting the coordinate system of the machining tool into a coordinate system taking the center point of the flywheel as an origin by using a coordinate system conversion function of a numerical control machining machine;
s5, in the machining process, according to design requirements, converting the position coordinates to be machined into a coordinate system taking the center point of the flywheel as an origin.
3. The flywheel pin hole processing method according to claim 1, characterized in that:
the specific steps for respectively determining the coordinates (Xn, yn) of the positions of the required pin holes on the flywheel are as follows:
s1, placing a flywheel on a processing platform, and measuring the diameter and the height of the flywheel by using a measuring tool;
s2, determining the position of a pin hole to be opened according to design requirements, designing by using Computer Aided Design (CAD), and storing coordinate data into a digital file;
s3, importing the digital file into a control system of a numerical control machine tool, and setting machining parameters including cutter type, cutting speed, feeding speed and the like;
s4, placing a processing cutter on a processing machine tool, fixing a flywheel on a processing platform, and starting a control system of the numerical control processing machine tool;
s5, the control system accurately controls the machining tool to cut on the flywheel according to the coordinate data in the digital file to finish pin hole machining, and in the machining process, the position coordinates to be machined are converted into a coordinate system with the center point of the flywheel as an origin according to design requirements, so that coordinates (Xn, yn) of each pin hole position can be obtained, and n is a positive integer;
and S6, after the machining is finished, checking whether the size and the position accuracy of the pin hole position meet the design requirements or not by using a measuring tool, and if necessary, carrying out subsequent machining and finishing.
4. The flywheel pin hole processing method according to claim 1, characterized in that: selecting a reference point outside the flywheel, wherein the coordinates of the reference point are (X0, Y0) as follows:
s1, taking the axis of the flywheel or other fixed points as reference points;
s2, measuring the distance between the reference point and the flywheel center point by using a measuring tool, determining the coordinate of the reference point, calculating the coordinate of the reference point by using a trigonometric function, or measuring the horizontal and vertical distances of the reference point relative to the flywheel center point by using the measuring tool, and then calculating the coordinate of the reference point according to the coordinate of the flywheel center point;
s3, in the machining process, taking the coordinates (X0, Y0) of the reference point as an origin of a reference coordinate system, and converting the coordinate system of the machining tool into a coordinate system taking the reference point as the origin through a coordinate system conversion function of the numerical control machining machine tool;
and S4, converting the position coordinates to be processed into a coordinate system with the reference point as an origin in the processing process, and converting the coordinates with the flywheel center point as the origin into the coordinates with the reference point as the origin through calculation.
5. The flywheel pin hole processing method according to claim 1, characterized in that: the vector from the reference point to each pin hole position is calculated and determined as a path of the tool movement during each pin hole machining, and the method comprises the following steps:
s1, determining coordinates (X0, Y0) of a reference point and coordinates (Xn, yn) of each pin hole position, wherein n is a positive integer;
s2, calculating a vector from the reference point to each pin hole position, namely (Xn-X0, yn-Y0), wherein the vector represents the direction and the distance from the reference point to the pin hole position;
s3, converting a coordinate system of the processing tool into a coordinate system taking a reference point as an origin in the processing process, so that the moving path of the tool can be expressed in a vector form;
and S4, adding the vector of each pin hole position with the moving path of the cutter in the machining process to obtain the moving path of the cutter at each pin hole position, wherein the vector of the moving path represents the direction and the distance of the cutter in the machining process.
6. The flywheel pin hole processing method according to claim 1, characterized in that: the processing operation is repeated, and the steps are as follows:
s1, placing a processing tool at a reference point position, namely moving the tool to coordinates (X0, Y0) of the reference point;
s2, calculating a path of the cutter to be moved according to the positions of the pin holes to be machined, moving the cutter to be in place along the path of the first pin hole, and preparing for machining the first pin hole;
s3, machining a first pin hole, and machining the first pin hole by using a proper cutter and machining parameters according to design requirements;
s4, after machining is finished, moving the tool back to the reference point position, namely moving the tool to coordinates (X0, Y0);
s5, calculating a path of the cutter to be moved according to the position of the next pin hole to be machined, moving the cutter in place along the path of the second pin hole, and preparing for machining the second pin hole;
s6, machining a second pin hole, and machining the second pin hole by using a proper cutter and machining parameters according to design requirements;
s7, after machining is finished, moving the tool back to the reference point position, namely moving the tool to coordinates (X0, Y0);
s8, repeating the operation, and sequentially machining all pin holes until all machining tasks are completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310747805.1A CN116700138A (en) | 2023-06-25 | 2023-06-25 | Flywheel pin hole processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310747805.1A CN116700138A (en) | 2023-06-25 | 2023-06-25 | Flywheel pin hole processing method |
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| Publication Number | Publication Date |
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| CN116700138A true CN116700138A (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310747805.1A Pending CN116700138A (en) | 2023-06-25 | 2023-06-25 | Flywheel pin hole processing method |
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| CN (1) | CN116700138A (en) |
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- 2023-06-25 CN CN202310747805.1A patent/CN116700138A/en active Pending
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