Research on the method of establishing the standard parameter library based on automatic identification in the Journal of Taiyuan University of Technology. Cheng Jianping, Liu Dongming, Taiyuan University of Technology, School of Mechanical Engineering, Shanxi Aluminum Factory, the method of selecting the parameters of human-computer interaction parts and the notes on the painting The file record format of the identification domain and related information is used to solve the problem that each piece of information in the record file corresponds to the marked part accurately. Therefore, the engineering cabinet automatically fills in the detailed questions and the zero-paid editing questions are currently available to the microcomputer. The 0 system is widely used, and the human 0-shaped supporting software is used to develop the standard parts and serialization for the 0-system 0 system. The component shape library is a small and medium-sized enterprise to improve the application, and the technical level of the person is 0. Hey, what, the car 牟 asks, the shape library developed by the product axe can only generate the component-shaped entity in a single way, when referring to the shape When the components in the middle need to be edited by moving and copying, and when selecting the component-shaped entity, it is very inconvenient to operate due to the influence of other entities. When you write the name of the installation, you must manually fill in the number according to the number of the part. Factors reduce design efficiency and are prone to errors. For a good one, it can automatically record its related information to realize the part-oriented editing operation and the dynamic writing function. The following is an example of a blind head bolt. Explain that the establishment of the data file data file based on the automatic identification of the parameterized component shape library in the mountain, 0 system is the source of the original data in the parameterized shape design. For the standard parts library, refer to the relevant national standard manual to establish Due to the complexity and diversity of engineering data, in general, the method of relational data management is very satisfying and needs to be solved by establishing a data format in a custom format. ; 578286 hex head screw 原始 original number, such as 578286 hex head bolt raw data mm note, million for product grade, level 4 for 24 and 1501 bolts; level 5 for 24, or 1 for each parameter 1锄 Author brief introduction Cheng Jianping, born in September 1957, lecturer, research + research direction person 1 aunt technology, Taiyuan, 030024 according to 0810091.1 light standard parts of the characteristics of a structure diameter and length defined as a drop-down box for Select and select the diameter and the corresponding length series; do not think about the structure of the parts and the way of visual display; help define as a button, how to operate the user.
The former structure describes the information required in the detail, and the latter structure is defined according to the structural features of the specific part for the drawing of the standard part. The created data file format, such as 2 selection and abandonment, is defined as a button for receiving or discarding the selected parameters; the program retrieves and reads the relevant data from the data file according to the initial parameters input by the dialog box, and stores it at 8, 1 and 1 in an object of the 081 structure, prepare for the parameter calculation and management of the part. 3 parameter calculation and drawing 8101 s structure object 1 structure object series nominal value file end 2 select parts by human-computer interaction In order to enable the user to refer to the standard parts accurately and conveniently, the human-computer interactive dialogue mode is used to realize the initial parameter selection. In the dialog box, the proportional angle diameter length of the reference bolt can be selected according to the intention, such as the cabinet 2, the dialog box The function of the object, such as before the parameter calculation, first judges the data retrieved and read from the data file. When the following formula is true, the part is determined to be level 5, otherwise the part is determined to be selected according to this. Related data; secondly, the user is requested to input the insertion point, and the insertion point is mapped to the point in the drawing base point 3 on the part. The base point should be selected when the part is assembled.
According to the structural features of the standard parts, the standard parts are appropriately decomposed into a plurality of class members and five types of members, and the base points are converted into relative coordinate values ​​to the absolute coordinate values ​​of the paper space, if the shape ratio is not 1 or the rotation angle is not 0, the necessary coordinate changes, quotes, scales and angles are defined as edit boxes. Used for input; a large proportion of the pieces, and then call the corresponding member's paint function to draw the part.
It is worth mentioning that when constructing the part's drawing function, it is necessary to carefully analyze the visual relationship between the part and other parts in the assembly. The line segments that may be covered by other parts should be decomposed into several sections to draw separately, so as to insert the part shape. Blanking processing or manual deletion of information about the recorded parts and identification fields. When performing part editing or writing a name, the parts need to be identified. Therefore, when a standard part is referenced to the assembly, information about the part is required. And the identification field is recorded at any time because it is impossible to complete the drawing. In order to realize the long-term preservation of the information, the file storage method of the meter uses the same file name as the current file name, and the suffix is. In this way, according to the name of the current shape file, the order of the standard document being cited and the automatic identification principle of the standard part in the assembly of the standard part are found, and the record file is required to be in addition to the management information required in the 7 record details. It is also necessary to record the insertion base point of the standard part in the assembly and the Kinthase base point coordinate stlworkwork thick letter total intlength formed by the structure of the part; the length of the identification field feature point (1) is mainly determined by the straight line segment and the arc segment at the part wheel part The combination of sequential combinations requires a special data structure and method for recording the part identification field. Recording the part identification field by recording the coordinates of each point and connecting the adjacent two-point line segments defines the following structure for recording the center coordinates, and pt describes the point coordinate information, recording the various points of the part at the beginning;
And a part record end mark where. Among them. 4, Where, the corpse is the sign of the beginning of the merge, the value is 2, 2, 2, the value of Dan 1 is 1 and the values ​​of the other points are the records of the 6 feature points of the 314 record of the part in the assembly and The beginning of the field marks the record of 8 feature points of the household and the start of the mark of the 8 feature points. The record of the end of the mark is marked 444. The end of the next part of the 504 record 5 is in the product design process. As the standard part is referenced, the log file will be automatically generated. When the part is edited or the part number is marked, the automatic recognition program is called. If the screen pick point is in the area of ​​a part, the part is recognized, the part is edited or the corresponding image is mapped. If the information is recorded in the document and the member is transferred to the (4) member; the editor Pang Fuxiang 1 and the 302 page field do not contain the screen picking point, then the method is considered to be verified in the human system by the instance, the selected part For non-standard parts, the request for the transmission of non-standard parts related to the part of the wheel line consisting of linear arc and 晷, the rate can be inferred according to the order; the piece of information finally achieves an automatic addition of 1% to 1% level. Automatic identification algorithm and program for standard parts in dimension. Journal of Taiyuan University of Technology, 199916769.
2 Tang Rongxi. Has 0 technology. Beijing Beijing University of Aeronautics and Astronautics Press, 1994.446 edited by Zhang Ai domain
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