CN115618530A - Round hole feature recognition processing method based on 3D model - Google Patents
Round hole feature recognition processing method based on 3D model Download PDFInfo
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- CN115618530A CN115618530A CN202211545665.1A CN202211545665A CN115618530A CN 115618530 A CN115618530 A CN 115618530A CN 202211545665 A CN202211545665 A CN 202211545665A CN 115618530 A CN115618530 A CN 115618530A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
Abstract
The invention relates to the field of circular hole feature recognition and processing, in particular to a circular hole feature recognition and processing method based on a 3D model, which comprises the following steps: acquiring a 3D model of a part to be processed based on CAM software; acquiring a circular hole feature set of the part to be machined by using the 3D model of the part to be machined; the round hole feature processing track of the part to be processed is obtained by utilizing the round hole feature set of the part to be processed, so that the compatibility is enhanced; the operation difficulty and risk are reduced, the processing safety is enhanced, and the product processing qualification rate is improved; the processing preparation time is reduced, and the production efficiency is improved. Saves the capital and reduces the cost.
Description
Technical Field
The invention relates to the field of circular hole feature recognition and processing, in particular to a circular hole feature recognition and processing method based on a 3D model.
Background
With increasingly severe global competition, numerical control machining is widely applied to various manufacturing fields of automobiles, aviation, molds and the like as an important means for ensuring product quality, improving labor productivity and realizing automation. Whether the numerical control machine can fully play the role of the numerical control machine or not is important in the efficiency and the usability of the numerical control program used by the numerical control machine. In actual production, many parts have hole machining requirements, and the positions, sizes and depths of the holes are different. Circular hole machining is the most common process in numerical control machining. The machining code is generally written manually when such machining is initially performed. After the diameter, the depth and the central position coordinates of the hole to be machined are known, when the numerical control system has a hole machining function, the numerical control system can automatically calculate the cutter center track during machining by only writing the parameters into a program according to a format required by the system, and the hole meeting the requirements of a user is machined. As the complexity of the part product shape increases, it seems impossible to calculate the point coordinates manually only. Computer Aided programming, i.e., CAM (Computer Aided Manufacturing) software, is now used. The CAM software is used for processing, a model of a part to be processed needs to be made first, the CAM software can process on the basis of given geometry, but at present, when the CAM software generates a hole processing track, parameters such as the position, the size, the depth and the like of a circle are generally manually specified or input, and data of all holes on the part cannot be automatically extracted. When the number of holes on the part is large, the process is time-consuming and error-prone, and the working efficiency is greatly reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a round hole feature recognition processing method based on a 3D model, which improves the processing efficiency by obtaining the shortest processing path through obtaining the round hole features of the parts to be processed and carrying out grouping processing.
In order to achieve the above object, the present invention provides a circular hole feature recognition processing method based on a 3D model, comprising:
acquiring a 3D model of a part to be machined based on CAM software;
acquiring a circular hole feature set of the part to be machined by using the 3D model of the part to be machined;
and acquiring the circular hole characteristic processing track of the part to be processed by utilizing the circular hole characteristic set of the part to be processed for processing.
Preferably, the step of obtaining the circular hole feature set of the part to be processed by using the 3D model of the part to be processed includes:
acquiring a round hole point set of the part to be machined by using the 3D model of the part to be machined;
and judging whether the round hole points are in a to-be-machined state or not by utilizing the round hole point set based on a preset search processing standard, if so, establishing a round hole feature set of the to-be-machined part by utilizing the round hole points in the to-be-machined state, and otherwise, giving up processing.
Further, the presetting of the search processing criteria comprises:
judging whether the round hole points of the part to be machined need to generate a machining track, if so, taking the round hole points as round hole points to be selected, otherwise, not meeting the standard;
and judging whether the round hole point to be selected simultaneously meets the diameter range and the depth range of the round hole, if so, judging that the round hole point to be selected meets the search processing standard, otherwise, judging that the round hole point to be selected does not meet the search processing standard.
Preferably, the processing of the round hole characteristic processing track of the part to be processed acquired by using the round hole characteristic set of the part to be processed includes:
dividing the circular hole characteristics of each part to be machined in the circular hole characteristic set of the part to be machined into a secondary circular hole characteristic set of the part to be machined on the basis of the same circular hole diameter by using the circular hole characteristic set of the part to be machined;
arranging the secondary circular hole features of the parts to be machined in the secondary circular hole feature set of the parts to be machined based on the shortest machining path to obtain a basic circular hole feature set of the parts to be machined;
performing path planning processing by using the basic circular hole feature set of the part to be processed to obtain a circular hole feature processing track of the part to be processed;
and processing the part to be processed by utilizing the circular hole characteristic processing track of the part to be processed.
Further, the obtaining of the circular hole feature processing track of the part to be processed by performing path planning processing by using the basic circular hole feature set of the part to be processed includes:
and performing path planning treatment on each basic circular hole feature set of the parts to be processed corresponding to the circular hole feature set of the parts to be processed based on the shortest path principle to obtain the circular hole feature processing track of the parts to be processed.
Further, the processing of the part to be processed by using the circular hole characteristic processing track of the part to be processed includes:
judging whether the diameter of the circular hole of each part to be machined, which corresponds to the characteristic machining track of the circular hole of the part to be machined, is larger than the maximum machining tool diameter of the machining tool library, if so, machining the circular hole of the part to be machined based on a circular hole milling method, and otherwise, giving up machining and performing error reporting;
and when the diameter of the circular hole of each part to be machined, which corresponds to the characteristic machining track of the circular hole of the part to be machined, is stored in the corresponding machining tool in the machining tool stock, normal machining is carried out.
Compared with the closest prior art, the invention has the following beneficial effects:
compatibility is enhanced; the operation difficulty and risk are reduced, the processing safety is enhanced, and the product processing qualification rate is improved; the processing preparation time is reduced, and the production efficiency is improved. The method has the advantages that the fund is saved, the cost is reduced, in addition, the proper drilling mode can be intelligently and automatically selected according to the diameter of the round hole, the optimal cutter track is generated according to the requirement of the shortest path, the processing efficiency is improved, and the processing cost is saved.
Drawings
FIG. 1 is a flow chart of a circular hole feature recognition processing method based on a 3D model provided by the invention;
FIG. 2 is a flow chart of a practical application method of the circular hole feature recognition processing based on the 3D model provided by the invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a circular hole feature recognition processing method based on a 3D model, which comprises the following steps as shown in figure 1:
s1, acquiring a 3D model of a part to be machined based on CAM software;
s2, acquiring a circular hole feature set of the part to be machined by using the 3D model of the part to be machined;
and S3, acquiring a circular hole characteristic processing track of the part to be processed by utilizing the circular hole characteristic set of the part to be processed to perform processing.
S2 specifically comprises the following steps:
s2-1, acquiring a round hole point set of the part to be machined by utilizing the 3D model of the part to be machined;
s2-2, judging whether the circular hole points are in a to-be-machined state or not based on a preset search processing standard by utilizing the circular hole point set, if so, establishing a circular hole feature set of the to-be-machined part by utilizing the circular hole points in the to-be-machined state, and if not, giving up processing.
S2-2 specifically comprises:
s2-2-1, judging whether a circular hole point of a part to be machined needs to generate a machining track, if so, taking the circular hole point as a circular hole point to be selected, otherwise, not meeting the standard;
s2-2-2, judging whether the round hole point to be selected simultaneously accords with the diameter range and the depth range of the round hole, if so, judging that the round hole point to be selected accords with the search processing standard, otherwise, judging that the round hole point to be selected does not accord with the search processing standard.
In this embodiment, a circular hole feature identification processing method based on a 3D model, a circular hole diameter range and a circular hole depth range are operation data values in processing, and the circular hole diameter range and the circular hole depth range need to be larger than the diameter and depth of a circular hole point to be processed.
S3 specifically comprises the following steps:
s3-1, dividing the circular hole characteristics of each part to be machined in the circular hole characteristic set of the part to be machined into a secondary circular hole characteristic set of the part to be machined on the basis of the same circular hole diameter by using the circular hole characteristic set of the part to be machined;
s3-2, arranging the secondary circular hole features of the parts to be machined in the secondary circular hole feature set of the parts to be machined on the basis of the shortest machining path to obtain a basic circular hole feature set of the parts to be machined;
s3-3, performing path planning processing by using the basic circular hole feature set of the part to be processed to obtain a circular hole feature processing track of the part to be processed;
and S3-4, processing the part to be processed by utilizing the circular hole characteristic processing track of the part to be processed.
S3-3 specifically comprises:
and S3-3-1, performing path planning treatment on the basic circular hole feature set of each part to be processed corresponding to the circular hole feature set of the part to be processed based on the shortest path principle to obtain a circular hole feature processing track of the part to be processed.
S3-4 specifically comprises:
s3-4-1, judging whether the diameter of the circular hole of each part to be machined, which corresponds to the circular hole characteristic machining track of the part to be machined, is larger than the maximum machining tool diameter of the machining tool library, if so, machining the circular hole of the part to be machined based on a circular hole milling method, and if not, giving up machining and performing error reporting;
and S3-4-2, when the diameter of the circular hole of each part to be machined, corresponding to the circular hole characteristic machining track of the part to be machined, is stored in a corresponding machining tool, normal machining is carried out.
Example 2:
the invention provides a practical application method for identifying and processing circular hole features based on a 3D model, which comprises the following steps of:
2.1 Inputting a 3D model of a part:
by providing a 3D model solid design environment, a 3D model of a part can be created, also allowing direct import of 3D model data for the part. The circular hole is recorded in the model data as a special feature point in the 3D model.
2.2 Inputting the parameters of the circular hole machining process:
the circular hole machining process parameters comprise a safety clearance, a working plane, a safety height, a starting and stopping height, main shaft conversion and a drilling speed.
2.3 Inputting the search conditions of the processed round hole:
the diameter range and the depth range of the circular hole are allowed to be input, and only the search through hole can be arranged.
In the part model, there may be many specifications of round holes, some of which need to be processed at one time, and some of which do not need to generate processing tracks. In order to meet the requirement, the device can input the search condition of the processed round hole.
Diameter range of the circular hole: the minimum and maximum diameters of the circular hole are to be machined.
Round hole depth range: the minimum depth and the maximum depth of the round hole are to be processed.
Searching only through holes;
does not include a through hole;
all the holes;
2.4 automatically identifying the round holes in the 3D model which meet the search conditions:
and traversing all the round hole data in the 3D model data according to the search condition of the input processed round hole, and finding out the round hole meeting the condition.
For processing round holes with different apertures, the processing tools or processing methods are different, so the round hole data searched by the invention are grouped according to different diameters, and each group is arranged and grouped according to the diameters from small to large.
2.5 Grouping and determining the round hole arrangement sequence:
the searched round hole data are grouped according to the diameter size, and the position of the round hole in each group is disordered. According to the invention, the order of each group of round holes is arranged according to the principle of shortest path.
2.6 Determining a processing cutter and a processing method for each group of round holes:
each numerical control machine is provided with a machining tool library. When being furnished with a plurality of specifications drilling tool in the cutter storehouse, to the round hole processing of different specifications, can adopt the cutter of different specifications through the automatic tool changing function of digit control machine tool, realize the round hole processing of equidimension not to improve machining efficiency.
When the hole diameter is too small and no tool for processing the small hole is arranged in the tool magazine, the situation needs to be reported by mistake and processing cannot be carried out.
When the diameter of the hole is the same as that of the cutter, the cutter can be determined to be used for machining.
When the aperture is too large and no tool with the large aperture exists in the tool magazine, a method for milling the round hole can be adopted to realize the processing of the round hole with the large aperture.
2.7 Generating a processing track:
after the processing tool and the processing method of each group of round holes are determined, the processing track of each group of round holes is generated according to the arranged processing sequence and the shortest path principle. And finally, connecting the processing tracks of all the groups into a complete processing track according to the shortest path principle. The processing track can generate a processing program by post-processing, and the processing program is transmitted to a numerical control machine tool, so that one-time clamping can be realized, and all holes can be processed.
In the embodiment, the practical application method for identifying and processing the circular hole features based on the 3D model intelligently generates the optimal processing path according to the requirement of the shortest path, realizes one-time card installation, meets the processing requirement of all holes, greatly improves the processing efficiency, and can be applied to a machine tool numerical control system and CAM software.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (5)
1. A round hole feature recognition processing method based on a 3D model is characterized by comprising the following steps:
s1, acquiring a 3D model of a part to be processed based on CAM software;
s2, acquiring a circular hole feature set of the part to be machined by using the 3D model of the part to be machined;
s3, acquiring a circular hole characteristic processing track of the part to be processed by using the circular hole characteristic set of the part to be processed to perform processing;
s3-1, dividing the circular hole characteristics of each part to be machined in the circular hole characteristic set of the part to be machined into a secondary circular hole characteristic set of the part to be machined on the basis of the same circular hole diameter by using the circular hole characteristic set of the part to be machined;
s3-2, arranging the secondary circular hole features of the parts to be machined in the secondary circular hole feature set of the parts to be machined on the basis of the shortest machining path to obtain a basic circular hole feature set of the parts to be machined;
s3-3, performing path planning processing by using the basic circular hole feature set of the part to be processed to obtain a circular hole feature processing track of the part to be processed;
and S3-4, processing the part to be processed by utilizing the circular hole characteristic processing track of the part to be processed.
2. The method for recognizing and processing the circular hole features based on the 3D model as claimed in claim 1, wherein the step of obtaining the circular hole feature set of the part to be processed by using the 3D model of the part to be processed comprises:
acquiring a round hole point set of the part to be processed by using the 3D model of the part to be processed;
and judging whether the round hole points are in a to-be-machined state or not by utilizing the round hole point set based on a preset search processing standard, if so, establishing a round hole feature set of the to-be-machined part by utilizing the round hole points in the to-be-machined state, and otherwise, giving up processing.
3. The method for recognizing and processing the characteristics of the circular hole based on the 3D model as claimed in claim 2, wherein the presetting of the search processing criteria comprises:
judging whether the round hole points of the part to be machined need to generate a machining track, if so, taking the round hole points as round hole points to be selected, otherwise, not meeting the standard;
and judging whether the round hole point to be selected simultaneously meets the diameter range and the depth range of the round hole, if so, judging that the round hole point to be selected meets the search processing standard, otherwise, judging that the round hole point to be selected does not meet the search processing standard.
4. The method for identifying and processing the circular hole features based on the 3D model as claimed in claim 1, wherein the obtaining of the circular hole feature processing trajectory of the part to be processed by performing the path planning processing by using the basic circular hole feature set of the part to be processed comprises:
and performing path planning treatment on each basic circular hole feature set of the parts to be processed corresponding to the circular hole feature set of the parts to be processed based on the shortest path principle to obtain the circular hole feature processing track of the parts to be processed.
5. The 3D model-based circular hole feature recognition processing method of claim 1, wherein the processing of the part to be processed by using the circular hole feature processing trajectory of the part to be processed comprises:
judging whether the diameter of the circular hole of each part to be machined, which corresponds to the characteristic machining track of the circular hole of the part to be machined, is larger than the maximum machining tool diameter of the machining tool library, if so, machining the circular hole of the part to be machined based on a circular hole milling method, and if not, giving up machining and performing error reporting;
and when the diameter of the circular hole of each part to be machined, which corresponds to the circular hole characteristic machining track of the part to be machined, is stored in a corresponding machining tool in the machining tool stock, normal machining is carried out.
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