Abstract
In the multivariate design mode, based on the effective parallel design facilities, the rational choice of the design of the two-support spindle for the machining center is the main aim of this article. A modified scheme for selecting a spindle unit is proposed, which reflects the procedure for the formation of its main components: "Representations on the Spindle Unit Variations" and "Representations on the Designer's preferences". A concept is introduced and a component of the selection scheme is described: "Procedural model", which makes it possible to realize the mechanism of forming preferences of the machine tool builder in the process of selecting the best design alternative. 3D models of the horizontal and vertical spindle heads for the multi-operation CNC machine are developed on the basis of the proposed modified scheme of rational choice. The analysis of various methods and technology of spindle units lubrication is presented and it is shown how the declarative (the most complete description of the methods and features of lubrication) representation in the selection of design priorities and the adoption of design solutions is used. The introduction of rational choice facilities into the practice of design activities in the field of machine tool building improves the efficiency of the multivariate design with a return character, significantly increasing the productivity of work and the quality of the design decisions.
Highlights
The design problems associated with multi-iteration, recurring algorithm, multi-criteria led to the idea of “parallel construction as an alternative to a set of sequential acts of making design decisions”
The procedure of rational choice for two-support spindle units designs based on the idea of parallel construction is realized: a set of design alternatives, declarative and procedural models, a system of priorities and the result of choice
It is shown that such minimal data composition at the initial stages of the design process will be sufficient for constructing a procedural model
Summary
The design problems associated with multi-iteration, recurring algorithm, multi-criteria led to the idea of “parallel construction as an alternative to a set of sequential acts of making design decisions”. The need for additional definition makes the task of designing new products is search, which is based on methods and procedures for engineering forecasting of design and engineering solutions [1, 2]. To such design tasks can be attributed the task of designing the main shaping spindle units (SU) of machine tools. The traditional approach to the design process as a sequence of acts for analysis, synthesis and decision-making faces a number of contradictions that lie at its base These include procedures for the sequential analysis of the elements of the design, the formation of alternative options and the choice of the best
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