Virtual Design and Motion Simulation of Piston Air Compressor Based on CAXA

1 Realize virtual design virtual assembly and dimensional dynamic simulation of the machine.

1 Introduction Air compressors are widely used in industrial production such as mining, metallurgy and petrochemical. The design uses dimension engineering to dimension objects, resulting in model geometry data not directly used in computer numerical control plus finite element analysis.

Using the computer with the dimension design function to design the air compressor, not only can the parts conforming to the national standard be drawn, the structure design can be realized, and the virtual assembly interference inspection and motion simulation can be performed, and the product can be found before the trial production. Modify feature parameters to shorten product development cycle.

The 0-person entity design software not only integrates the styling assembly sheet metal animation level rendering and so on in an easy-to-understand system, but also features the drag-and-drop solid shape and the combination of intelligent capture and ball positioning technology. Realize the construction of simulation model, realize the feature-based parametric modeling method, and modify the structural features of the virtual virtual entity parts to meet the requirements of assembleability and manufacturability. 1. Author, 4, entity design software The development platform selects the double 2.85 air compressor as the research object, and completes the virtual assembly interference inspection and motion simulation of the product.

2 Air compressor geometric modeling Product modeling dimensional modeling is the primary work of computer product design. Usually, according to the size data of the grass and related parts of the product design, the computer design system is used to shape each part of the product, and the dimensional framework model of the product is obtained. During the modeling process, you can observe and modify the design shape on the computer screen, or you can obtain samples of the shape by printing.

2.85 type air compressor parts are mostly regular-shaped parts in terms of their structural characteristics. Therefore, the preferred method for part modeling is the plain drag and draw tensile feature tool. The Jia 28.5 air compressor cylinder head of the 1 is completed by the prime drag and drop tensile feature tool. For complex parts with irregular shapes, first break it down into several parts with simple shapes, then use the tools of the drag and drop rotation feature to scan the feature lofting features to complete the simple part of the shape, and then use the dimension sphere to determine the relative parts of these simple parts. Position, and finally use the Boolean operation command to merge these simple parts into a complex shape part. The 2 Jia 2.85 air compressor crankshaft is completed by the loft feature tool and Boolean operation command.

Cylinder head machine crankshaft 3 air compressor virtual assembly virtual assembly is defined as the physical realization of no product or support process, just by analyzing the prior model visualization and data access, using computer tools to arrange or assist with assembly-related engineering decision making. Virtual assembly is a kind of technology that combines various techniques such as technical visualization technology simulation technology decision theory and assembly and manufacturing process research virtual reality technology.

The double 2.85 air compressor must ensure the reciprocating motion of the piston in the cylinder. The piston and the cylinder must be coaxial in the positional relationship. The positioning constraint tool button on the solid design tool bar is used to realize the common between the piston and the cylinder. Line constraint. Constraint tool buttons are also used to implement constraints between other components. Most parts of the 2.85 air compressor belong to the rotary parts. In the virtual assembly process, the position between adjacent parts can be determined only by implementing the collinear and fitting constraints. When there are more parts, sub-assembly between parts can be realized, and then assembly can be realized between sub-assemblies. 3 is a 2.85 type air compressor virtual prototype completed by using the positioning constraint tool button. Use the Interference Check command under the Tools menu to check for interference between components throughout the assembly process.

4 Air compressor motion simulation, machine designed by plastic human entity software, as long as the installation and assembly relationship is correct, can achieve simulation research through the combination of various configuration output file formats and different simulation software. For equipment and components that only perform motion simulation, the animation design function provided by the person can be used to visually display the internal motion relationship and structural relationship of the product, and vividly depict the expected dynamic effects of the device, but according to the concept requirements To produce a satisfactory dynamic effect, you must design the combined effect of the animation.

Using the 0.4 entity design software to perform motion simulation on the organization requires the use of intelligent animation and intelligent animation editor toolbars. The specific step is to use the mouse to click the original motion clock in the motion of the mechanism to make it in the part editing state.

Use the Smart Animation toolbar to determine how it moves and when.

Click the play button on the Smart Animation toolbar to watch the animation. If the time is not appropriate, use the Smart Animation Editor toolbar. In the intelligent animation editor toolbar, right-click the crankshaft, select the property item, open the properties dialog box, enter the time in the length text box, press the OK button, the movement time of the crankshaft linkage is changed successfully. Use the left mouse button to click the play button on the Smart Animation toolbar to watch the animation. 4 is the motion simulation of the working mechanism of the double 2.85 air compressor at a certain moment. In addition, by clicking the output command under the File menu, the mechanism can be fully utilized by the author on the basis of the structural characteristics of the 2.85-type piston air compressor. The powerful modeling function of the physical design software realizes the virtual design virtual assembly of the machine and the motion simulation of the mechanism. The application of virtual technology shortens the product design and manufacturing cycle, reduces development costs, and helps improve the ability of products to respond quickly to market changes.

Lin Shaofen, Chen Hui, Chen Qinglin. Simulation of a wheeled crane virtual prototype. Lifting the rest. Jin, Long Wei, bribe. Application of Virtual Assembly Technology Based on Dimension Model 3. Lu Xiaochun, Yang Yaqin, Yang Weiqun, et al. , entity design, innovation dimension 04, up to page 3 can be and animation technology can achieve the dimensional simulation of industrial robots, but also can easily control the model for human-computer interaction.

1 Qiao Lin, Fei Guangzheng. OpenGL programming M. Beijing, China University published L2 Peace Dove Studio. 0 bet, 1 advanced programming and visualization system development advanced programming articles M. Beijing China Water Resources and Hydropower Press, 2003.

38. Chaotic. Introduction to robotics analysis systems and applications. Sun Fuchun, Zhu Jihong translated. Beijing Electronics Industry Press, 20, 4.

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