SolidWorks2004 software establishes the three-dimensional model of cycloidal pinwheel reducer and the virtual simulation assembly of cycloidal pinwheel reducer. The design of cycloidal pinwheel reducer is designed by this method. It has quick and convenient design and the research result guides cycloidal pinwheel reducer. It is meaningful to design and improve the speed and quality of the design.
The three-dimensional model of the speed governor structure is used to study the visual design method and virtual assembly of the cycloidal pinwheel reducer. The research results have guiding significance for improving the speed and quality of the cycloidal pinwheel reducer design.
1 Three-dimensional modeling of cycloidal pinwheel reducer 1.1 Design platform design research platform Solidworks, a mechanical design software based on Windows operating system developed by Solidworks, USA, has a full Windows interface, full parametric feature modeling, and image interface. Simple, friendly, easy to use and efficient. It uses the advanced ParaSolid graphics language platform on the technology kernel. The main functions are: part design modeling, assembly design, drawing drawing, Solidworks software integration, seamless integration of various professional functions on a single Windows interface, including finite element structural analysis Cosmos / Works, manufacturing and processing CAMworks, sports and Dynamic analysis of Motionworks and so on.
1.2 Cycloidal cycloidal revolver is a disc structure, the parts of which are uniformly distributed on the hole, its biggest feature is the cycloidal contour; the difficulty of the three-dimensional modeling of this part is also the drawing of the cycloidal contour. Since Solidworks 2004 does not directly use the command to draw the cycloid, to generate a contour of the cycloid that meets the requirements, the pitch wheel profile for the parametric design must be generated by means of a corresponding program. The cycloid profile rectangular coordinate parameter equation is: the actual tooth profile equation of the cycloidal wheel is: where 0e, and the interval 0.5* calculates a data, a total of 721 points of coordinates.
According to the parametric equation of the cycloidal wheel, this paper uses C language to compile a program for generating the profile curve of the cycloidal wheel and save it as the extension. Txt file. Use the point method to obtain a series of coordinate points on the pendulum (), and then use the spline curve command to connect all the coordinate points to get the cycloidal profile curve, then the pin hole is cut and the array is obtained by the cycloid 1.3 box box. An irregular geometric shape, which determines the complexity of 3D modeling, this article through the Solidworks software rotation, stretching, cutting and other methods to get ().
Since the shape of the box is very complicated, there are many split bodies, and a reasonable modeling order is very important; in addition, modeling should be based on data. Three-dimensional modeling of other parts is not repeated here.
Geometric modeling of the box body 2 Cycloidal pinwheel reducer virtual simulation assembly Virtual simulation assembly technology refers to the assembly of the 3D model on the computer, and the interference inspection of the components, is the analysis of the product in the design process, Evaluation, planning, and simulation techniques.
With the development of computer hardware and software technology, virtual reality technologies such as virtual assembly and motion simulation play an increasingly important role in product development and design.
2.1 Assembly process The three-dimensional parts of the cycloidal pinwheel reducer established above are used for virtual simulation assembly, first sub-assembly, such as bearing, pin and pin sleeve, pin and pin sleeve. After the sub-assembly work is completed, the total assembly is carried out. According to the order from the inside to the outside, the input shaft is assembled first, then the two cycloidal wheels and the pin are assembled, and then the pin gear pin and the pin gear case are assembled, and finally the accessory is attached and decelerated. The complete assembly is an exploded view of the assembly. The assembly sequence in the assembly process is very important, and the assembly sequence is reasonable, which directly affects the quality of the assembly. It is a virtual assembly drawing of the cycloidal pinwheel reducer and its related parts.
2.2 Interference Checking After the parts have been assembled, perform an interference check of the assembly to determine if there are physical boundary conflicts (ie, interference) between the parts in the assembly, where the conflict occurred, and thus prepare for the elimination of the conflict. As for the assembly with more parts or stricter assembly requirements, an assembly inspection should be performed after assembling one part, so that errors can be found in time and corrected in time.
Assembly Conclusion The modeling of the cycloidal wheel can be achieved by a programmed method, using the Solidworks 3D software to generate the cycloidal tooth profile. Using 3D Solidworks software for visual product design, we can see the internal structure and appearance of the cycloidal pinwheel reducer in the product design stage, which can improve the unreasonable structure and verify the assemblyability of the cycloidal pinwheel reducer design. And detachability, and analysis of assembly efficiency. With visual product design, you can reduce the need for physical prototypes, visualize assembly structures and assembly processes, measure and analyze assembly performance, and alert for interference that occurs during motion.
The application of virtual assembly and virtual manufacturing technology can reduce the cost of research and application, improve the quality of assembly, shorten the cycle of product development, and generate maximum economic benefits.
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