CN108920844A - A kind of rose cutter geometric Parameters Optimization method based on associative simulation - Google Patents

Abstract

The rose cutter geometric Parameters Optimization method based on associative simulation that the invention discloses a kind of, rose cutter, which is established, by UG parameterizes physical model, three-dimensional milling, which is carried out, using ABAQUS limits first simulation analysis, UG is integrated under ISIGHT multidisciplinary design optimization platform, ABAQUS associative simulation, make its modeling, emulation, it is controlled in one, according to the characteristic and process requirements of workpiece material, determine the design variable of geometric Parameters Optimization, objective function and constraint condition, rose cutter geometric parameter is optimized using genetic algorithm, process automation is made full use of to determine best design parameter, improve optimization design efficiency, reduce rose cutter geometric Parameters Optimization cost, meet the flexible demand of modern manufacturing industry, a kind of new way is provided for tool geometrical parameter optimization.

Description

A kind of rose cutter geometric Parameters Optimization method based on associative simulation

Technical field

The invention belongs to field of machining, and in particular to a kind of rose cutter geometric Parameters Optimization based on associative simulation Method.

Background technique

It is known as tool of the cutter of the title of lathe " tooth " as cutting metal, cutting tip is one by geometric parameters The determining solid of number, since blades of cutting tools directly participates in cutting process, tool geometrical parameter and cutting force, cutting temperature And cutter life is in close relations, while having an effect on the shape and quality on finished work surface, in machining, knife It is extremely sensitive to material property to have geometric parameter, when facing different materials, the fixed universal cutter of geometric parameter is difficult to play Excellent performance, therefore, the cutter for the characteristic selection reasonable geometric parameter of material is the premise for ensureing excellent cutting ability, Although test method(s) can obtain relatively true Cutting data, wastes the plenty of time and cost is quite high, metal Cutting finite element simulation technology is widely used in metal cutting technology research field with its low cost, the advantage of intuitive and convenient, But material is different, tool geometrical parameter does not need the artificial parameter of modification repeatedly simultaneously, repeats to model, and the degree of automation is low.

ISIGHT software can couple various softwares by way of a kind of play with building blocks, successfully by number, reasoning and design Discovery techniques combine together, and all design cycles are unified into a frame, automatic running simulation software, and by searching automatically The design variable that rope technology changes input file is matched in simulation model next time, realizes the automatic of " design-assessment-improvement " Circulation.

Summary of the invention

The problem of for above-mentioned background technique, it is an object of that present invention to provide a kind of bulbs based on associative simulation Milling cutter geometric Parameters Optimization method.

To achieve the above object, the present invention provides the following technical solutions：A kind of rose cutter geometry based on associative simulation Parameter optimization method, which is characterized in that include the following steps：

A, selection UG software establishes rose cutter parametrization physical model, and establishment C code process control parameter characteristic variable is raw At different geometric parameter cutter model and export the model file of stp format；

B, selection ABAQUS finite element analysis software establishes three-dimensional RAP material analysis model, imports the cutter model of stp format File carries out material properties and contact property parameters setting, further includes that cutting depth, cutting speed and feed speed parameter are set It sets, extracts three-dimensional RAP material analysis model main body program, establish RAP material modeling process command stream Python file, make it It updates cutter model and completes simulation modeling pre-treatment and work and control post-processing module output cutting force, cutting temperature data text This；

C, selection ISIGHT Multidisciplinary Optimization Integrated Simulation UG, ABAQUS software makes it carry out inter-module parameter and text automatically Program integrated package is added in the transmitting of part in workflow, renames as UG, demarcates geometric parameter variable, make its calling UG software running background simultaneously executes inputted C code program and exports new cutter model, and procedure set is added in workflow It at component, renames as ABAQUS, it is made to call ABAQUS software running background and executes RAP material modeling process order It flows Python file and carries out simulation analysis output cutting force, cutting temperature data text；

D, according to the characteristic of workpiece material and process requirements, the design variable of geometric Parameters Optimization, objective function and about are determined Beam condition is added optimization component in ISIGHT workflow and controls UG, ABAQUS collaborative modeling, associative simulation, utilizes heredity Algorithm optimizes rose cutter geometric parameter, obtains the optimal geometric parameter combination of cutter.

Compared with prior art, the beneficial effects of the invention are as follows：

Rose cutter is established by UG and parameterizes physical model, is carried out three-dimensional milling using ABAQUS and is limited first simulation analysis, makes it Have complementary advantages, UG, ABAQUS associative simulation are integrated under ISIGHT multidisciplinary design optimization platform, makes its modeling, emulation, control In one, according to the characteristic and process requirements of workpiece material, the design variable of geometric Parameters Optimization, objective function and about are determined Beam condition optimizes rose cutter geometric parameter in conjunction with genetic algorithm, process automation is made full use of to determine optimal design Parameter, the combination of rose cutter geometric parameter can be optimized by not needing progress milling test, avoid repetition simulation modeling, It improves optimization design efficiency, reduce tool geometrical parameter optimization cost, meet the flexible demand of modern manufacturing industry, be cutter Geometric Parameters Optimization provides a kind of new way.

Specific embodiment

To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with specific implementation Example is described in detail.

A kind of rose cutter geometric Parameters Optimization method based on associative simulation, which is characterized in that include the following steps：

A, selection UG software establishes rose cutter parametrization physical model, and establishment C code process control parameter characteristic variable is raw At different geometric parameter cutter model and export the model file of stp format；

B, selection ABAQUS finite element analysis software establishes three-dimensional RAP material analysis model, imports the cutter model of stp format File carries out material properties and contact property parameters setting, further includes that cutting depth, cutting speed and feed speed parameter are set It sets, extracts three-dimensional RAP material analysis model main body program, establish RAP material modeling process command stream Python file, make it It updates cutter model and completes simulation modeling pre-treatment and work and control post-processing module output cutting force, cutting temperature data text This；

C, selection ISIGHT Multidisciplinary Optimization Integrated Simulation UG, ABAQUS software makes it carry out inter-module parameter and text automatically Program integrated package is added in the transmitting of part in workflow, renames as UG, demarcates geometric parameter variable, make its calling UG software running background simultaneously executes inputted C code program and exports new cutter model, and procedure set is added in workflow It at component, renames as ABAQUS, it is made to call ABAQUS software running background and executes RAP material modeling process order It flows Python file and carries out simulation analysis output cutting force, cutting temperature data text；

D, according to the characteristic of workpiece material and process requirements, the design variable of geometric Parameters Optimization, objective function and about are determined Beam condition is added optimization component in ISIGHT workflow and controls UG, ABAQUS collaborative modeling, associative simulation, utilizes heredity Algorithm optimizes rose cutter geometric parameter, obtains the optimal geometric parameter combination of cutter.

The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (1)

1. a kind of rose cutter geometric Parameters Optimization method based on associative simulation, which is characterized in that include the following steps：

A, selection UG software establishes rose cutter parametrization physical model, and establishment C code process control parameter characteristic variable is raw At different geometric parameter cutter model and export the model file of stp format；

B, selection ABAQUS finite element analysis software establishes three-dimensional RAP material analysis model, imports the cutter model of stp format File carries out material properties and contact property parameters setting, further includes that cutting depth, cutting speed and feed speed parameter are set It sets, extracts three-dimensional RAP material analysis model main body program, establish RAP material modeling process command stream Python file, make it It updates cutter model and completes simulation modeling pre-treatment and work and control post-processing module output cutting force, cutting temperature data text This；

C, selection ISIGHT Multidisciplinary Optimization Integrated Simulation UG, ABAQUS software makes it carry out inter-module parameter and text automatically Program integrated package is added in the transmitting of part in workflow, renames as UG, demarcates geometric parameter variable, make its calling UG software running background simultaneously executes inputted C code program and exports new cutter model, and procedure set is added in workflow It at component, renames as ABAQUS, it is made to call ABAQUS software running background and executes RAP material modeling process order It flows Python file and carries out simulation analysis output cutting force, cutting temperature data text；

D, according to the characteristic of workpiece material and process requirements, the design variable of geometric Parameters Optimization, objective function and about are determined Beam condition is added optimization component in ISIGHT workflow and controls UG, ABAQUS collaborative modeling, associative simulation, utilizes heredity Algorithm optimizes rose cutter geometric parameter, obtains the optimal geometric parameter combination of cutter.