Process route planning method for engine block based on machining element

Abstract

An engine cylinder block process route planning method based on machining elements comprises the following steps: (1) building a cylinder block information description based on a feature layer and a feature attribute layer; (2) based on the cylinder block description, making sure the machining chain of each feature fi, refining the machining chain of each feature fi so as to make sure each machining element fmeij, and building an integrated cylinder block process information model FME based on the machining element fmeij information; (3) analyzing the factors, such as the geometrical shape, the technical requirement, the process method and the optimization constraints, of the cylinder block, based on the basic principles of process route design, building a sequencing optimization mathematical model based on the cylinder block process information model FME; (4) based on the precedence relationship of the machining element, solving the established mathematical models, so as to gain the optimized process route. By refining the cylinder block features to get the machining elements, in order to resolve the engine cylinder block process, a feasible process route planning method based on the machining elements is put forward. By means of a heuristic type overall optimization on the sequencing of the process route, a partial optimization result is avoided.

Description

technical field [0001] The invention belongs to the field of process planning, in particular to a process route planning method for an engine cylinder block. Background technique [0002] Process design is the activity of making a detailed work plan to realize the process. It is a bridge connecting product design and product manufacturing. It is a key link to complete the conversion of product design information to manufacturing information, and has an important impact on the manufacturing system. The quality of process design directly affects the allocation and optimization of manufacturing resources, product quality, production organization efficiency, product cost and production cycle. The problem to be solved in the mechanical processing process design is: according to the design requirements of the product, determine a series of processing methods, processing sequences, tooling equipment, etc. required for the parts to change from the original state to the specified fin...

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Problems solved by technology

[0005] Some of the above-mentioned process route methods are only discussed and researched at the theoretical level, without considering the process requirements in the actual processing environment, and lack of practicability; these studies only consider the local process decision-making problems of the part processing process, and do not systematically study the entire process of the part. process decision process

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