CN110837694B - Rotary machining feature recognition method and device - Google Patents
Rotary machining feature recognition method and device Download PDFInfo
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- CN110837694B CN110837694B CN201911013154.3A CN201911013154A CN110837694B CN 110837694 B CN110837694 B CN 110837694B CN 201911013154 A CN201911013154 A CN 201911013154A CN 110837694 B CN110837694 B CN 110837694B
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Abstract
The embodiment of the invention provides a rotary processing characteristic identification method and a rotary processing characteristic identification device, wherein the method comprises the following steps: judging whether the target part is a rotary part or not; if the target part is a rotary part, identifying all rotary surface systems of the target part; and identifying the rotation processing characteristics based on each rotation surface system of the target part. According to the embodiment of the invention, all the rotation surface systems on the part are firstly identified, and then the rotation processing characteristic identification is carried out, so that repeated judgment of whether the rotation surfaces are coaxial or not can be effectively avoided; meanwhile, the implementation difficulty of a rotary processing characteristic recognition algorithm is reduced, and the recognition accuracy is improved; the identification result of the rotary machining characteristics based on the rotary surface system can provide basis and reference for the analysis and judgment of the machinability of rotary parts and the reasoning of the machining process.
Description
Technical Field
The invention relates to the technical field of computer aided design and manufacturing, in particular to a rotary processing feature recognition method and device.
Background
The processing feature identification is to identify and analyze a group of surfaces with feature manufacturing meanings on a part design model, analyze the manufacturing meanings therein, thereby converting the geometric information of the part design into processing technology information with the manufacturing meanings, and providing basis and conditions for the processing analysis and the processing technology reasoning of the part design. The rotary part is a part which is mainly formed by a rotary surface and a plane and is mainly manufactured by turning during processing. Rotary parts are a very common type of parts and are generally characterized by a set of coaxial surfaces of revolution and a plane perpendicular to the axis of revolution.
The existing feature recognition technology can be used for indiscriminately recognizing the processing features on the rotary parts, and the recognition method can be generalized into the type, the attribute and the recognition method based on the geometric morphology of the predefined features. When the feature identification is carried out, firstly, traversing all surfaces on the part, judging whether the geometric characteristics of a predefined feature are met or not according to the relation between the types and the attributes of the surfaces and the adjacent surfaces, and if so, identifying the feature as the feature and calculating the attribute of the corresponding feature. The above process is repeated as each machined feature on the part is identified.
From the viewpoint of feature recognition, for a rotational machining feature on a rotational part, each face on the machining feature is a rotational face and has the same rotational axis. In the current feature recognition method, when the processing features of the revolution are recognized, whether the surfaces are the revolution surfaces or not is judged every time the processing features are recognized, and whether the revolution surfaces are coaxial or not is caused, so that a great amount of repeated judgment work is carried out when the feature recognition is carried out, meanwhile, the difficulty of a feature recognition algorithm is increased, and the accuracy of the feature recognition is reduced. From the point of view of machining of rotary parts, for a set of coaxial rotary surfaces connected by circular arcs (including circles) on a part model and planes perpendicular to an axis, a set of machining surfaces obtained by a continuous main feed path and a plurality of additional feed paths is often corresponding during machining (especially during numerical control machining). The sub-features under the machined surface set often have certain relationships that have an impact on the machinability and machining process reasoning of the part. However, in the conventional rotational machining feature recognition technology, each machining feature on a rotational part is independently recognized, and the relationship between the features is ignored.
Disclosure of Invention
Embodiments of the present invention provide a method and apparatus for identifying a rotational machining feature that overcomes or at least partially solves the above-mentioned problems.
In a first aspect, an embodiment of the present invention provides a method for identifying a rotation processing feature, including:
judging whether the target part is a rotary part or not;
if the target part is a rotary part, identifying all rotary surface systems of the target part;
and identifying the rotation processing characteristics based on each rotation surface system of the target part.
Further, the step of identifying all revolution surface systems of the target part specifically comprises the following steps:
recording an unrecognized surface of revolution on the target part to a first set;
judging whether the unrecognized rotating surface has an adjacent surface meeting the recording condition, if so, recording the adjacent surface meeting the recording condition to the first set, and marking the unrecognized rotating surface as recognized;
taking out an unrecognized adjacent surface from the first set, continuing to judge whether the adjacent surface meeting the recording condition exists or not, and correspondingly recording and marking until all surfaces in the first set are marked as recognized and no new surface is recorded, and recognizing the first set as a revolution surface system if three surfaces or more exist in the first set;
judging whether the target part has a next unidentified revolution surface, if so, recording the next unidentified revolution surface to a second set, and executing the identification operation of a next revolution surface system;
wherein the recording conditions are: if one surface is adjacent to and coaxial with another unidentified revolution surface through an arc edge, recording the other unidentified revolution surface; alternatively, if one face is adjacent to another unrecognized plane by a circular arc edge, and the unrecognized plane is perpendicular to the axis of rotation of the target part, then the other unrecognized plane is recorded;
wherein, there are three facet bodies in the first set: at least two revolution surfaces exist in the three surfaces.
Further, after the step of determining whether the target part has a next unrecognized surface of revolution, the method further includes:
and if the target part does not have the next unidentified revolution surface, ending the revolution surface system identification process of the target part.
Further, the step of judging whether the target part is a rotary part specifically includes:
and if all the rotating surfaces of the target part are coaxial and the maximum contour in the direction perpendicular to the axis of the target part is a certain rotating surface, judging that the target part is a rotating part.
In a second aspect, an embodiment of the present invention provides a rotation processing feature recognition apparatus, including:
the judging module is used for judging whether the target part is a rotary part or not;
the rotation surface system identification module is used for identifying all rotation surface systems of the target part if the target part is a rotation type part;
and the characteristic identification module is used for identifying the rotation processing characteristics based on each rotation surface system of the target part.
Wherein the revolution surface system identification module further comprises:
a revolution surface recording subunit configured to record, for any unrecognized revolution surface on the target part, the unrecognized revolution surface to a first set;
a neighboring surface recording subunit, configured to determine whether the unrecognized rotating surface has a neighboring surface that satisfies a recording condition, and if so, record the neighboring surface that satisfies the recording condition to the first set, and mark the unrecognized rotating surface as recognized;
a revolution surface system identification subunit, configured to take out an unrecognized adjacent surface from the first set, continue to determine whether there is an adjacent surface that satisfies a recording condition, and perform corresponding recording and marking until all surfaces in the first set are marked as identified and no new surfaces are recorded, and identify the first set as a revolution surface system if there are three or more surfaces in the first set;
a circulation subunit, configured to determine whether a next unrecognized revolution surface exists in the target part, and if so, record the next unrecognized revolution surface to a second set, and perform a recognition operation of a next revolution surface system;
wherein the recording conditions are: if one surface is adjacent to and coaxial with another unidentified revolution surface through an arc edge, recording the other unidentified revolution surface; alternatively, if one face is adjacent to another unrecognized plane by a circular arc edge, and the unrecognized plane is perpendicular to the axis of rotation of the target part, then the other unrecognized plane is recorded;
wherein, there are three facet bodies in the first set: at least two revolution surfaces exist in the three surfaces.
Wherein the circulation subunit is further configured to:
and if the target part does not have the next unidentified revolution surface, ending the revolution surface system identification process of the target part.
The judging module is specifically configured to:
and if all the rotating surfaces of the target part are coaxial and the maximum contour in the direction perpendicular to the axis of the target part is a certain rotating surface, judging that the target part is a rotating part.
In a third aspect, an embodiment of the present invention provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the gyration processing feature identification method as provided in the first aspect when the program is executed.
In a fourth aspect, embodiments of the present invention provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the gyration tooling feature identification method as provided in the first aspect.
The method and the device for identifying the rotary machining characteristics provided by the embodiment of the invention identify all the rotary surfaces on the part and the relation among the rotary surfaces, and then carry out the identification of the rotary machining characteristics on the basis, so that the repeated labor of judging whether the rotary machining characteristics are coaxial or not in each time in the conventional characteristic identification process can be effectively avoided; meanwhile, the difficulty of an identification algorithm for carrying out the reprocessing feature identification on the basis of the revolution surface system is reduced, and the identification accuracy is improved; the rotary machining characteristic recognition result based on the rotary surface system reflects the relation between the rotary surface system and all the sub-characteristics below the rotary surface system, but not the independent rotary machining characteristics in the prior art, and the relation between the rotary surface system and all the sub-characteristics below the rotary surface system can provide basis and reference for the workability analysis judgment and the machining process reasoning of rotary parts.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for identifying a rotation processing feature according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating the steps for identifying all revolution surfaces of the target part in the method for identifying a revolution feature according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a rotary processing feature recognition device according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a rotation surface system identification module according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an entity structure of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. 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.
In order to accurately and efficiently identify the rotary machining characteristics on rotary parts and provide necessary information for part machinability analysis and automatic reasoning of a machining process, the invention provides a rotary machining characteristic identification method based on a rotary surface system. As shown in fig. 1, a flow chart of a method for identifying a rotation processing feature according to an embodiment of the present invention includes:
step 100, judging whether the target part is a rotary part or not;
specifically, if all the rotation surfaces of the target part are coaxial, and the maximum contour in the direction perpendicular to the axis of the target part is a certain rotation surface, the target part is determined to be a rotation type part, and the axis is referred to as the rotation axis of the target part.
The rotation surface is a smooth curved surface obtained by rotating a smooth non-self-crossed bus around an axis for one circle.
200, if the target part is a rotary part, identifying all rotary surface systems of the target part;
on the rotary parts, a set of three or more coaxial rotary surfaces connected by circular arcs or planes perpendicular to the axis of the rotary member is called a rotary surface system. The revolution surface is a surface group theoretically obtained by revolving a section of continuous contour line around an axis line during modeling of the revolution-type part. In actual machining, a surface of revolution may be obtained by turning a continuous main machining path and other additional machining paths due to workpiece clamping, tool type and size limitations. In the embodiment of the invention, all the revolution surface systems of the target part are identified in a propagation mode, specifically, the surfaces belonging to the same revolution surface system with any unidentified revolution surface on the target part are gradually identified in a propagation mode from any unidentified revolution surface on the target part until all the revolution surfaces on the target part are identified, and finally all the revolution surface systems of the target part are obtained.
And 300, identifying the rotation processing characteristics based on each rotation surface system of the target part.
Specifically, the identification operation of the revolution processing feature is performed for each revolution surface system based on the revolution surface system identified in the above step. Among the turning features include, but are not limited to, outer circles, journals, shoulders, relief grooves, over-travel grooves, ring grooves, center holes, rounding, chamfer, end faces, and the like. The rotation processing characteristic recognition result based on the rotation surface system reflects the relationship between the rotation surface system and all the sub-characteristics below the rotation surface system.
In one embodiment, after all the rotational machining features of the target part are identified, each rotational machining feature may be named in the manner of a rotational surface system +number + "" + feature name for subsequent analytical determination of the machinability of the part, process reasoning, and the like.
The rotary machining feature recognition method provided by the embodiment of the invention recognizes all the rotary surfaces on the part and the relation among the rotary surfaces, and carries out rotary machining feature recognition on the basis of the rotary surfaces, so that the repeated labor of judging whether the rotary surfaces are coaxial or not when the rotary machining features are recognized each time in the conventional feature recognition process can be effectively avoided; meanwhile, the difficulty of an identification algorithm for carrying out the reprocessing feature identification on the basis of the revolution surface system is reduced, and the identification accuracy is improved; the rotary machining characteristic recognition result based on the rotary surface system reflects the relation between the rotary surface system and all the sub-characteristics below the rotary surface system, but not the independent rotary machining characteristics in the prior art, and the relation between the rotary surface system and all the sub-characteristics below the rotary surface system can provide basis and reference for the workability analysis judgment and the machining process reasoning of rotary parts.
Based on the foregoing embodiment, the step of identifying all the revolution surface systems of the target part, as shown in fig. 2, specifically includes:
step 201, recording an unrecognized revolution surface on any unrecognized revolution surface on the target part to a first set;
step 202, judging whether the unrecognized revolving surface has an adjacent surface meeting the recording condition, if so, recording the adjacent surface meeting the recording condition to the first set, and marking the unrecognized revolving surface as recognized;
step 203, extracting an unrecognized adjacent surface from the first set, continuing to judge whether an adjacent surface meeting the recording condition exists or not, and performing corresponding recording and marking until all surfaces in the first set are marked as recognized and no new surface is recorded, and if three surfaces or more than three surfaces exist in the first set, recognizing the first set as a revolution surface system;
204, judging whether the target part still has a next unidentified revolution surface, if so, recording the next unidentified revolution surface to a second set, and executing the identification operation of a next revolution surface system;
wherein the recording conditions are: if one surface is adjacent to and coaxial with another unidentified revolution surface through an arc edge, recording the other unidentified revolution surface; alternatively, if one face is adjacent to another unrecognized plane by a circular arc edge, and the unrecognized plane is perpendicular to the axis of rotation of the target part, then the other unrecognized plane is recorded;
wherein, there are three facet bodies in the first set: at least two revolution surfaces exist in the three surfaces.
Specifically, step 201 begins with any unrecognized surface on the target part, first recording the unrecognized surface to a first set;
in step 202, judging whether the unrecognized rotation surface is adjacent to and coaxial with another unrecognized rotation surface through a circular arc edge, if so, recording the other unrecognized rotation surface to a first set, namely, the unrecognized rotation surface has an adjacent surface meeting the recording condition, and the adjacent surface is the other unrecognized rotation surface; or judging whether the unrecognized rotating surface is adjacent to another unrecognized plane through a circular arc edge, wherein the unrecognized plane is perpendicular to the rotating shaft of the target part, if so, recording the other unrecognized plane to a first set, namely, the unrecognized rotating surface has an adjacent surface meeting the recording condition, and at the moment, the adjacent surface is the other unrecognized plane. The identification of the adjacent faces of the currently unidentified surface of revolution is accomplished by the above steps. Wherein the circular arc edge comprises a complete circle.
After the recording of the adjacent faces is completed, the unrecognized surface is marked as identified.
Then, step 203 is executed, where an unrecognized adjacent surface is taken out from the first set, and a determination is continued as to whether there is an adjacent surface satisfying the recording condition, and a corresponding recording is performed until all surfaces in the first set are identified and no new surface is recorded, and if three or more surfaces exist in the first set, the first set is identified as a rotation surface system;
it should be noted that, three facet bodies exist in the first set: at least two revolution surfaces exist in the three surfaces.
Specifically, whether an unrecognized surface exists or not is judged continuously from the first set, and corresponding recording is performed, wherein the unrecognized surface can be the unrecognized surface recorded in the first set in the step 202, or can be the unrecognized surface recorded in the first set in the step 202, namely, whether the unrecognized surface is adjacent to and coaxial with another unrecognized surface through one circular arc edge is judged, or whether the unrecognized surface is adjacent to another unrecognized surface through one circular arc edge is judged, and the unrecognized surface is perpendicular to the rotating shaft of the target part. Thus, one unrecognized surface is continuously taken out from the first set to judge the adjacent surfaces meeting the recording condition until all surfaces in the first set are recognized and no new surfaces are recorded, the first set is taken as a rotation surface system, and if the first set at least comprises three or more surfaces and at least two rotation surfaces exist in the three surfaces, the first set is recognized as the rotation surface system.
After obtaining a revolution surface system, executing step 204, determining whether there is a next unidentified revolution surface of the target part, if so, recording the next unidentified revolution surface to a second set, and executing an identification operation of the next revolution surface system;
specifically, it is determined whether the target part has a next unrecognized surface of revolution, if so, the next unrecognized surface of revolution is recorded to a second set, and then steps 202 and 203 are repeated to continue to identify a next system of surfaces of revolution for the target part.
Based on the foregoing embodiment, after the step of determining whether the target part further includes a next unrecognized revolution surface, the method further includes:
and if the target part does not have the next unidentified revolution surface, ending the revolution surface system identification process of the target part.
Specifically, if the target part does not have the next unrecognized revolution surface, which means that the target part only has one revolution surface system, the revolution surface system recognition process of the target part is finished, and the revolution processing characteristic recognition is entered.
As shown in fig. 3, a schematic structural diagram of a turning feature recognition device according to an embodiment of the present invention includes: a judging module 301, a revolution surface system identifying module 302 and a characteristic identifying module 303, wherein,
a judging module 301, configured to judge whether the target part is a rotation part;
specifically, if all the rotation surfaces of the target part are coaxial, and the maximum contour in the direction perpendicular to the axis of the target part is a certain rotation surface, the determining module 301 determines that the target part is a rotation type part, and the axis is referred to as the rotation axis of the target part.
The rotation surface is a smooth curved surface obtained by rotating a smooth non-self-crossed bus around an axis for one circle.
A revolution surface system identification module 302, configured to identify all revolution surface systems of the target part if the target part is a revolution type part;
specifically, on the rotary parts, a group of three or more coaxial rotary surfaces connected by circular arcs or planes perpendicular to the axis of the rotary member is called a rotary surface system. The revolution surface is a surface group theoretically obtained by revolving a section of continuous contour line around an axis line during modeling of the revolution-type part. In actual machining, a surface of revolution may be obtained by turning a continuous main machining path and other additional machining paths due to workpiece clamping, tool type and size limitations. In the embodiment of the present invention, the revolution surface system identification module 302 identifies all revolution surface systems of the target part in a propagation manner, specifically, gradually identifies, starting from any unidentified revolution surface on the target part, a surface belonging to the same revolution surface system as the unidentified revolution surface in a propagation manner until all revolution surfaces on the target part are identified, and finally obtains all revolution surface systems of the target part.
And the feature identification module 303 is used for identifying the rotation processing feature based on each rotation surface system of the target part.
Specifically, the feature recognition module 303 performs a recognition operation of the turning feature for each of the turning surfaces. Among the turning features include, but are not limited to, outer circles, journals, shoulders, relief grooves, over-travel grooves, ring grooves, center holes, rounding, chamfer, end faces, and the like. The rotation processing characteristic recognition result based on the rotation surface system reflects the relationship between the rotation surface system and all the sub-characteristics below the rotation surface system.
In one embodiment, after identifying all the rotational machining features of the target part, the feature identification module 303 may name each rotational machining feature in a manner of a rotational surface system +number+ "+ feature name, so as to facilitate subsequent analysis and judgment of the machinability of the part, reasoning of the machining process, and the like.
The rotary machining feature recognition device provided by the embodiment of the invention recognizes all the rotary surfaces on the part and the relation among the rotary surfaces, and carries out rotary machining feature recognition on the basis of the rotary surfaces, so that the repeated labor of judging whether the rotary surfaces are coaxial or not each time the rotary machining features are recognized in the conventional feature recognition process can be effectively avoided; meanwhile, the difficulty of an identification algorithm for carrying out the reprocessing feature identification on the basis of the revolution surface system is reduced, and the identification accuracy is improved; the rotary machining characteristic recognition result based on the rotary surface system reflects the relation between the rotary surface system and all the sub-characteristics below the rotary surface system, but not the independent rotary machining characteristics in the prior art, and the relation between the rotary surface system and all the sub-characteristics below the rotary surface system can provide basis and reference for the workability analysis judgment and the machining process reasoning of rotary parts.
Based on the foregoing embodiment, as shown in fig. 4, the revolving surface system identification module 302 further includes:
a revolution surface recording subunit 401, configured to record, for any unidentified revolution surface on the target part, the unidentified revolution surface to a first set;
a neighboring surface recording subunit 402, configured to determine whether the unrecognized rotating surface has a neighboring surface that satisfies a recording condition, and if so, record the neighboring surface that satisfies the recording condition to the first set, and mark the unrecognized rotating surface as recognized;
a revolution surface system identification subunit 403, configured to take out an unrecognized adjacent surface from the first set, continue to determine whether there is an adjacent surface that satisfies a recording condition, and perform corresponding recording and marking until all surfaces in the first set are marked as identified and no new surfaces are recorded, and identify the first set as a revolution surface system if there are three or more surfaces in the first set;
a circulation subunit 404, configured to determine whether a next unrecognized revolution surface exists on the target part, and if so, record the next unrecognized revolution surface to a second set, and perform a recognition operation of a next revolution surface system;
wherein the recording conditions are: if one surface is adjacent to and coaxial with another unidentified revolution surface through an arc edge, recording the unidentified revolution surface; alternatively, if one face is adjacent to another unrecognized plane by a circular arc edge, and the unrecognized plane is perpendicular to the axis of rotation of the target part, then the unrecognized plane is recorded;
wherein, there are three facet bodies in the first set: at least two revolution surfaces exist in the three surfaces.
Specifically, the revolution surface recording subunit 401 starts from any unidentified revolution surface on the target part, and first records the unidentified revolution surface to a first set;
the adjacent surface recording subunit 402 determines whether the unrecognized rotation surface is adjacent to and coaxial with another unrecognized rotation surface by a circular arc edge, and if so, records the other unrecognized rotation surface to the first set, that is, the unrecognized rotation surface has an adjacent surface satisfying the recording condition, and the adjacent surface is the other unrecognized rotation surface; or judging whether the unrecognized rotating surface is adjacent to another unrecognized plane through a circular arc edge, wherein the unrecognized plane is perpendicular to the rotating shaft of the target part, if so, recording the other unrecognized plane to a first set, namely, the unrecognized rotating surface has an adjacent surface meeting the recording condition, and at the moment, the adjacent surface is the other unrecognized plane. The identification of the adjacent faces of the currently unidentified surface of revolution is accomplished by the above steps. Wherein the circular arc edge comprises a complete circle.
After the adjacent surface recording is completed, adjacent surface recording subunit 402 marks the unrecognized surface of revolution as identified.
The revolution surface system recognition subunit 403 extracts an unrecognized adjacent surface from the first set, continues to determine whether there is an adjacent surface satisfying a recording condition, and performs corresponding recording until all surfaces in the first set are recognized and no new surface is recorded, and recognizes the first set as a revolution surface system if there are three or more surfaces in the first set;
it should be noted that, three facet bodies exist in the first set: at least two revolution surfaces exist in the three surfaces.
Specifically, the revolution surface system identifying subunit 403 extracts an unrecognized surface from the first set, and continues to determine whether there is an adjacent surface satisfying the recording condition and performs corresponding recording, where the unrecognized surface may be an unrecognized revolution surface recorded by the adjacent surface recording subunit 402 into the first set, or an unrecognized plane recorded by the adjacent surface recording subunit 402 into the first set, that is, whether the unrecognized surface is adjacent to and coaxial with another unrecognized revolution surface by one circular arc edge, or whether the unrecognized surface is adjacent to another unrecognized plane by one circular arc edge, and the unrecognized plane is perpendicular to the revolution axis of the target part. Thus, one unrecognized surface is continuously taken out from the first set to judge the adjacent surfaces meeting the recording condition until all surfaces in the first set are recognized and no new surfaces are recorded, the first set is taken as a rotation surface system, and if the first set at least comprises three or more surfaces and at least two rotation surfaces exist in the three surfaces, the first set is recognized as the rotation surface system.
After obtaining one revolution surface system, the circulation subunit 404 determines whether the target part still has a next unidentified revolution surface, if so, records the next unidentified revolution surface to the second set, and performs an identification operation of the next revolution surface system;
specifically, the circulation subunit 404 determines whether the target part has a next unrecognized surface of revolution, if so, records the next unrecognized surface of revolution to the second set, and then continues to identify the next surface of revolution of the target part via the adjacent surface recording subunit 402 and the surface of revolution identification subunit 403.
Based on the content of the above embodiment, the loop subunit 404 is further configured to:
and if the target part does not have the next unidentified revolution surface, ending the revolution surface system identification process of the target part.
Specifically, if the circulation subunit 404 knows that the target part does not have a next unrecognized surface, the surface train identification process of the target part is ended.
Based on the content of the foregoing embodiment, the determining module 301 is specifically configured to:
and if all the rotating surfaces of the target part are coaxial and the maximum contour in the direction perpendicular to the axis of the target part is a certain rotating surface, judging that the target part is a rotating part.
Fig. 5 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, where, as shown in fig. 5, the electronic device may include: processor 510, communication interface (Communications Interface) 520, memory 530, and communication bus 540, wherein processor 510, communication interface 520, memory 530 complete communication with each other through communication bus 540. Processor 510 may invoke a computer program stored in memory 530 and executable on processor 510 to perform the gyration tooling feature identification methods provided by the various method embodiments described above, including, for example: judging whether the target part is a rotary part or not; if the target part is a rotary part, identifying all rotary surface systems of the target part; and identifying the rotation processing characteristics based on each rotation surface system of the target part.
Further, the logic instructions in the memory 530 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in essence or a part contributing to the prior art or a part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The embodiments of the present invention further provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method for identifying a rotational machining feature provided in the above method embodiments, for example, including: judging whether the target part is a rotary part or not; if the target part is a rotary part, identifying all rotary surface systems of the target part; and identifying the rotation processing characteristics based on each rotation surface system of the target part.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A method of identifying a rotational machining feature, comprising:
judging whether the target part is a rotary part or not;
if the target part is a rotary part, identifying all rotary surface systems of the target part;
identifying a rotation machining feature based on each rotation surface system of the target part;
wherein the rotating surface refers to a group of three or more coaxial rotating surfaces connected by circular arcs or a plane perpendicular to the axis of the rotating member on the target part;
the step of identifying all the revolution surface systems of the target part specifically comprises the following steps:
recording an unrecognized surface of revolution on the target part to a first set;
judging whether the unrecognized rotating surface has an adjacent surface meeting the recording condition, if so, recording the adjacent surface meeting the recording condition to the first set, and marking the unrecognized rotating surface as recognized;
taking out an unrecognized adjacent surface from the first set, continuing to judge whether the adjacent surface meeting the recording condition exists or not, and correspondingly recording and marking until all surfaces in the first set are marked as recognized and no new surface is recorded, and recognizing the first set as a revolution surface system if three surfaces or more exist in the first set;
judging whether the target part has a next unidentified revolution surface, if so, recording the next unidentified revolution surface to a second set, and executing the identification operation of a next revolution surface system;
wherein the recording conditions are: if one surface is adjacent to and coaxial with another unidentified revolution surface through an arc edge, recording the other unidentified revolution surface; alternatively, if one face is adjacent to another unrecognized plane by a circular arc edge, and the unrecognized plane is perpendicular to the axis of rotation of the target part, then the other unrecognized plane is recorded;
wherein, there are three facet bodies in the first set: at least two revolution surfaces exist in the three surfaces.
2. The method of claim 1, wherein after the step of determining whether the target part has a next unrecognized surface, further comprising:
and if the target part does not have the next unidentified revolution surface, ending the revolution surface system identification process of the target part.
3. The method for identifying a turning feature according to claim 1, wherein the step of determining whether the target part is a turning type part comprises:
and if all the rotating surfaces of the target part are coaxial and the maximum contour in the direction perpendicular to the axis of the target part is a certain rotating surface, judging that the target part is a rotating part.
4. A rotary processing feature recognition device, comprising:
the judging module is used for judging whether the target part is a rotary part or not;
the rotation surface system identification module is used for identifying all rotation surface systems of the target part if the target part is a rotation type part;
the feature recognition module is used for recognizing the rotation processing features based on each rotation surface system of the target part;
wherein the rotating surface refers to a group of three or more coaxial rotating surfaces connected by circular arcs or a plane perpendicular to the axis of the rotating member on the target part;
the step of identifying all the revolution surface systems of the target part specifically comprises the following steps:
recording an unrecognized surface of revolution on the target part to a first set;
judging whether the unrecognized rotating surface has an adjacent surface meeting the recording condition, if so, recording the adjacent surface meeting the recording condition to the first set, and marking the unrecognized rotating surface as recognized;
taking out an unrecognized adjacent surface from the first set, continuing to judge whether the adjacent surface meeting the recording condition exists or not, and correspondingly recording and marking until all surfaces in the first set are marked as recognized and no new surface is recorded, and recognizing the first set as a revolution surface system if three surfaces or more exist in the first set;
judging whether the target part has a next unidentified revolution surface, if so, recording the next unidentified revolution surface to a second set, and executing the identification operation of a next revolution surface system;
wherein the recording conditions are: if one surface is adjacent to and coaxial with another unidentified revolution surface through an arc edge, recording the other unidentified revolution surface; alternatively, if one face is adjacent to another unrecognized plane by a circular arc edge, and the unrecognized plane is perpendicular to the axis of rotation of the target part, then the other unrecognized plane is recorded;
wherein, there are three facet bodies in the first set: at least two revolution surfaces exist in the three surfaces.
5. The rotational machining feature recognition device of claim 4, wherein the rotational surface system recognition module further comprises:
a revolution surface recording subunit configured to record, for any unrecognized revolution surface on the target part, the unrecognized revolution surface to a first set;
a neighboring surface recording subunit, configured to determine whether the unrecognized rotating surface has a neighboring surface that satisfies a recording condition, and if so, record the neighboring surface that satisfies the recording condition to the first set, and mark the unrecognized rotating surface as recognized;
a revolution surface system identification subunit, configured to take out an unrecognized adjacent surface from the first set, continue to determine whether there is an adjacent surface that satisfies a recording condition, and perform corresponding recording and marking until all surfaces in the first set are marked as identified and no new surfaces are recorded, and identify the first set as a revolution surface system if there are three or more surfaces in the first set;
a circulation subunit, configured to determine whether a next unrecognized revolution surface exists in the target part, and if so, record the next unrecognized revolution surface to a second set, and perform a recognition operation of a next revolution surface system;
wherein the recording conditions are: if one surface is adjacent to and coaxial with another unidentified revolution surface through an arc edge, recording the other unidentified revolution surface; alternatively, if one face is adjacent to another unrecognized plane by a circular arc edge, and the unrecognized plane is perpendicular to the axis of rotation of the target part, then the other unrecognized plane is recorded;
wherein, there are three facet bodies in the first set: at least two revolution surfaces exist in the three surfaces.
6. The rotational machining feature recognition device of claim 5, wherein the circulation subunit is further configured to:
and if the target part does not have the next unidentified revolution surface, ending the revolution surface system identification process of the target part.
7. The rotational processing feature recognition device of claim 4, wherein the determination module is specifically configured to:
and if all the rotating surfaces of the target part are coaxial and the maximum contour in the direction perpendicular to the axis of the target part is a certain rotating surface, judging that the target part is a rotating part.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the gyration feature identification method according to any one of claims 1 to 3 when the program is executed by the processor.
9. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor implements the steps of the gyration processing feature identification method according to any one of claims 1 to 3.
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