Based on the motion function scheme obtained above, when the structural scheme of the machine tool is created, the motion function distribution is also required, that is, the motion unit is assigned to the tool side and the workpiece side based on the base, thereby A variety of motion structures can be obtained. For example, for the creation of W/XYZ/γp/T , there are four methods for assigning the motion function. The base is indicated by " . "
W/ . XYZ/γp/T, W/X . YZ/γp/T, W/XY . Z/γp/T, W/XYZ . /γp/T
Therefore, 60 kinds of motion structural formulas can be obtained from the above 15 types of creation movements. Then, based on the 60 types of motion structure types, the overall layout of the machine tool can be created, and various possible machine tool layout schemes can be obtained. For specific design.
The above is only a case of machining a cylindrical surface with a face milling cutter as an example to introduce the design and planning method of the machine tool's motion function scheme. This method is versatile and is equally applicable to other types of tools and machined surfaces. For the processing of the part group, the motion function of the machine tool can be planned by motion synthesis.
5 Conclusion
This paper proposes a method for creating a machine tool's motion function scheme with tools and workpieces as input information. By defining the cutting plane of the tool, the relationship between the machined pose and the relative motion between the tool is proposed. The method of using the motion cascade matrix to realize the tool pose and the motion function of the machine tool are analyzed. The steps and examples show that the proposed method is universal and can effectively create all possible machine tool motion schemes. It provides a theoretical basis for the design method of a new machine tool motion function scheme that does not rely on prior knowledge. .
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