Nanchang Kama Diesel Engine Co., Ltd. (formerly Nanchang Diesel Engine Co., Ltd.) is referred to as “Kama Nanchaiâ€. It is currently the leading domestic diesel engine manufacturer. Its main products are 2105A, X105, X110, NC110, NK115 series diesel engines and diesel generator sets. Multiple varieties and specifications of products. Diesel engine power coverage ranges from 17.7kW to 147kW, and diesel generator sets cover power from 5kW to 500kW. The products are widely used in engineering machinery, ships, power stations, combine harvesters, tractors, etc., and are exported to Southeast Asia, Middle East, Africa, South America, etc. Annual sales of 300 million yuan. Our company was founded in 1955. It has many years of history in the design and manufacture of diesel engines. The products have won the National Quality Award, the National Science and Technology Progress Award, and the Provincial Excellent Product Award. With the continuous development of the enterprise, the market has higher and higher requirements for product performance, more and more product varieties, shorter and shorter product development cycles, and control of design and manufacturing costs. The technology development work is facing constant challenges. With the development of enterprise information construction, we first used 2D CAD design software in the design work, and then introduced the CAPP and PDM software. The product design and product data management methods have been greatly improved. The introduction of UG NX3 3D CAD software, product design means, design efficiency has a qualitative leap.
2. The selection process of Kaima Nanchai Software
The competition in the diesel engine industry is becoming increasingly fierce. The means of product development and the speed of product upgrading will have a crucial impact on the development of the company, and this is inseparable from the 3D development platform. To this end, our company has established a “three-dimensional CAD project team†with the deputy general manager, responsible for the research, selection, implementation and promotion of 3D CAD software to ensure the successful implementation of the “3D CAD projectâ€.
At present, the mainstream and dominant position in China's MCAD market is foreign MCAD software. Through the development in recent years, MCAD products represented by CAXA and Solid 3000 have emerged in China, but there is still a big gap between the software architecture and software maturity and foreign MCAD software, especially in the system of complex products. Level digital design and manufacturing process. At present, foreign MCAD is mainly divided into four major pedigrees: one, Dassault in France and IBM in the United States: CATIA V4, CATIA V5, Solidworks, etc. Second, the United States PTC company, PRO / Engineering. Third, the United States UGS company, UGNX and I-DEAS, Solidege is the company's MCAD representative. Fourth, the United States Autodesk, MDT, INVENTOR.
From the perspective of functions, 3D software is divided into three levels: high-end, mid-range and low-end to suit the needs of different users. The high-end has UG, PRO/E, CATIA, etc.; the middle end has Solidege, Solidworks, INVENTOR, etc.; the low end has MDT, CAXA, Solid 3000 and so on.
Combined with the characteristics of our company's diesel engine, the application of CAD software in the diesel engine industry and the company's budget in the 3D CAD project, we finally selected the UG NX3 3D CAD software. Then, we contacted many UG agents. Considering the qualifications of the agents, the background of the company, the success stories and the feasibility of the solutions, we chose Shanghai Tongjie Digital Technology Co., Ltd. as a partner.
3. Selection process of Kama Nanchai NX software
In order to enable the company to better implement the UG NX3 3D CAD project, I as the informatization supervisor, I first learned UG NX3, and actively sought the help of software agents to achieve a macro understanding of UG NX3, for future software modules. The configuration, software training content, etc. are ready for technical preparation. Shanghai Tongjie Digital Technology Co., Ltd. has given us great help. The software vendor provides basic training for the company's technical staff and advanced training for UG system administrators. The UG system administrator establishes the UG seed file, sets the unified user default environment, and establishes the UG modeling specification, and is widely supported and applied by the technical staff. The UG seed file should contain: layer settings, linetypes, colors, text fonts and character sets, reference sets, properties of part files, expressions, precision, and more. Set the unified user default environment, first set the default UG setting according to the national standard on one computer, and export this setting to a file (*.dpv), then import this file in each UG site to ensure the unified UG default Modeling environment. The UG modeling specification is a standard that must be implemented by technicians in applying UG modeling. The UG modeling specification includes the sum of modeling, assembly, drawing, data inspection, etc., where modeling (including assembly modeling) and mapping specifications are core. Content to ensure the correctness of the 3D model data, the relevance and consistency of the design, the editability of the model, the reliability of the data, and the integrity of the design data.
4. Kaima Nanchai NX software in the process of new product development and application
UG NX3 pays more attention to the coordinated work of the team. In practical applications, the virtual assembly technology of UG has basically completed the design of the new NC6110G-22 diesel engine. In the design process, the Top-down design method is the main line, and the Bottom-up design method is appropriately combined to complete the entire design process from the whole to the local. The entire product design process is shown in Figure 1.
Figure 1 NC6110G-22 diesel engine modeling technology route
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