Control method for precision processing of micro-flow path abrasive flow based on flow volume mould

A control method and precision machining technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of high speed and high cost

Active Publication Date: 2010-09-15
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0004] In order to overcome the deficiencies of the existing fine channel abrasive flow precision machining control methods, which are difficult to observe the abrasive manifold, high in cost and fast in speed, the present invention provides a low cost and fast speed based Fluid Volume Model Die Fine Channel Abrasive Flow Precision Machining Control Method

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  • Control method for precision processing of micro-flow path abrasive flow based on flow volume mould
  • Control method for precision processing of micro-flow path abrasive flow based on flow volume mould
  • Control method for precision processing of micro-flow path abrasive flow based on flow volume mould

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Embodiment Construction

[0066] The present invention will be further described below in conjunction with the accompanying drawings.

[0067] refer to Figure 1 to Figure 5 , a method for precision machining control of abrasive flow in micro-channels of molds based on fluid volume models, comprising the following steps:

[0068] (1) Establish a mathematical model of abrasive flow motion

[0069] Without a correct and perfect mathematical model for abrasive flow motion, the simulation lacks a theoretical basis. Based on the basic theory of two-phase flow and continuum theory of abrasive flow, since there is no heat exchange, the continuity equation and momentum equation are directly used as the control equations use. Since the abrasive flow is mostly in the turbulent range, in general, the turbulence equation needs to be added. Therefore, the governing equation based on the combination of the fluid volume model and the SST turbulence model was established (see attached figure 1 ), the VOF model use...

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Abstract

The invention relates to a control method for precision processing of micro-flow path abrasive flow based on a fluid volume mould, comprising the following steps: (1) establishment of a mathematical model of abrasive flow movement based on the fluid volume mould; (2) solution process of the abrasive flow, which particularly comprises: 2.1) original conditions and boundary conditions; 2.2) grid division; 2.3) establishment of a discrete equation; 2.4) the original discrete conditions and the boundary conditions; 2.5) setting of solution control parameters; 2.6) calculation of the discrete equation; and 2.7) convergence of discontinuous solutions: the solution for a steady-state problem or the solution for an instant problem on a certain special time step can be obtained through multi-iterations; the solution for the instant problem can be obtained if an explicit scheme is used to conduct integration on a time domain; and the iteration process is finished after a solution value reaches designated precision. The control method has the advantages of low cost and rapid speed, and can achieve observation of abrasive manifold.

Description

technical field [0001] The invention relates to the field of precision finishing of molds, and more specifically relates to an analysis method for precision machining of small structures in a concave mold and a convex mold of a plastic mold. Background technique [0002] With the advancement of technology and the precision of products, the mold application field has higher and higher requirements for the roughness of the mold surface corresponding to the surface of the injection molded part and the mold runner. In order to eliminate the remaining mechanical processing traces on the mold surface, finishing technology has become a necessary process, which accounts for more than 50% of the entire mold manufacturing time. The existing methods generally need to use tools to contact or approach the surface to be processed. However, for the research of precision finishing technology for fine structures involved in mold manufacturing, it is difficult to use tools for contact finishi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 计时鸣唐波谭大鹏
Owner ZHEJIANG UNIV OF TECH
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