Integration of tool magazine and CATIA in process preparation environment (3)
(2) Data structure.
The data structure is shown in Figure 3. The Procutter table is used to store information about the tool, and each tuple represents a tool.
The Cutter_type table is used to store tool type information. Each tuple represents each tool type.
The Cutter_var_property table is used to store the properties of each tool type. Each type of tool attribute may be the same or different, so the tool type type_code and property_code are used as primary keys, which can constrain other values.
In the Procutter table, there is a property name var_property_value_list table that stores the values ​​of all the properties of the tool. Each attribute is separated by "◇↑".
3 CATIA tool library generation process
The CATIA tool library generation process is shown in Figure 4. The program is written on CATIA's VBA. The CATALOG file is the location where CATIA recognizes the tool magazine and cannot be changed at will. When the CSV file data is written to the CATALOG, the log file corresponding to the write is created at the same time, and the same path exists to facilitate the search for errors.
After the file and data are checked for errors, the function CreateCatalogFromcsv is responsible for converting the CSV file into a CATALOG tool library file. Among them, the CreateCatalogFromcsv function is a method under the object CatalogDocument, the parameter csvFile is the input parameter, which represents the CSV file path, and the catalogFile is the output parameter, which is the output tool library CATALOG file path.
It should be noted that due to the strict format requirements of the CSV file, only the correct data format CATIA can be identified. Therefore, when adding tools to the PPE platform, you must have a complete error checking procedure before the database is written and written to the CSV file to ensure the correctness of the data format.
in conclusion
Based on the research and development of PPE platform, this paper studies the establishment technology of CATIA tool library, and proposes a method of creating tool library in CATIA using CSV file, and realizes the integration of PPE platform and CATIA tool library by database. Tools on the PPE platform and CATIA software can be added, deleted, and updated simultaneously. This method has been tested multiple times in the platform and is currently working well. The successful application of this method has the following effects:
(1) Using this method to establish a tool library that conforms to the actual situation of the enterprise, so that the selected tool of NC programming is closely linked with the production site, ensuring the applicability of the NC program;
(2) When performing numerical control programming, the tool is directly selected from the tool magazine, which greatly reduces the workload of the numerical control programmer to set the tool parameters and improves the programming efficiency;
(3) The continuous updating of the contents of the tool magazine allows the tool cutting parameters optimized by machining inspection to be retained, allowing the department to share the knowledge and experience of the expert level, thereby improving the efficiency of CNC machining and reducing the production cost;
(4) Combine the applicable tools in the actual programming with the tool magazine management to guide the tool warehouse manager to purchase efficient tools.
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HCPE Resin (coating type) Description
HCPE resin (coating type) is a irregular resultant after depth chlorination with the low molecular weight polyethylene (PE) . Generally the quality score of chlorine is bigger than 65%, and it is the main film-forming substances as new generation antiseptic paint. It has the following characteristics.
(1) Compared with the CPVC, the solubility is good, and more resins can mix with it.
(2) Compared with the CSM, the advantage of HCPE is single-component packaging, it do not use lead oxide, tribasic lead curing agent containing heavy metals. There is no toxicity, and has a broader range of applications.
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(4) Compared with ordinary HCPE, the viscosity is low, take the Tu-4 coating cup, the quality score as the toluene solution 20%, under the room temperature determines, is not bigger than 50S; Ordinary HCPE viscosity generally above 50S.
(5) Made of high-solids coatings, reduces the coating cost greatly, and the coating has a fast-drying nature, and has a better compatibility with other resins. LHCPE film features: The coating made by HCPE has a high solid content. excellent resistance to acid, alkali , salt, etc. It have so excellent corrosion resistance properties; can be used under 15~50°C; film drying quickly.
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