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An integrated modeling method of chip geometry and cutting force for three-axis machining

A modeling method and cutting force technology, applied in special data processing applications, instruments, electrical digital data processing, etc.

Active Publication Date: 2018-09-04
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a layered method to solve the shape of undeformed chips and the real-time model of the workpiece during machining, and accurately calculate the thickness of undeformed chips, and finally adopt a widely used cutting force prediction model for machining Prediction of instantaneous cutting force to solve the problem of combining geometric simulation and physical simulation in three-axis machining

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  • An integrated modeling method of chip geometry and cutting force for three-axis machining
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  • An integrated modeling method of chip geometry and cutting force for three-axis machining

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Embodiment Construction

[0065] The technical solutions of the present invention will be further described below in conjunction with specific implementation examples.

[0066] The invention first provides a layered method to solve the undeformed chip shape and the real-time model of the workpiece during processing, and accurately calculates the thickness of the undeformed chip, and then uses a widely used cutting force prediction model to predict the instantaneous cutting force during processing. Finally, system calculation and processing experiments are carried out, and data analysis and comparison are made.

[0067] Step 1: Parametric expression of common tools, divide the cross-section lines of various common tools in machining into straight line segments and arc segments, use a 7-parameter representation method, give the definition of corresponding parameters, and then according to the different tool parameters Different parameters are set for the cross-section shape, so as to complete the unified...

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Abstract

The invention discloses a three-axis machining chip geometry and cutting force integrated modeling method. The method comprises: firstly, giving out a layering method to solve non-deformed chip shape and workpiece real-time models in machining, and accurately calculating the thickness of a non-deformed chip; secondly, predicting instant cutting force in machining by adopting a widely applied cutting force prediction model; and finally, performing system calculation and machining experiment, and performing data analysis and comparison. The purposes of expressing the geometric shape of a workpiece and the shape of the non-deformed chip in machining at the same time and predicting the instant cutting force in machining are achieved.

Description

technical field [0001] The invention belongs to the technical field of multi-axis numerical control machining, and relates to the problem of integrated modeling of chip geometry and cutting force in three-axis machining. Background technique [0002] Today, with the rapid development of the manufacturing industry, CNC machining technology is continuously applied to various manufacturing activities. For manufacturing activities, the forming accuracy and manufacturing quality of parts are the criteria for evaluating whether the processing quality is qualified or not, and NC simulation technology plays an important role in this. There are two ways of NC machining simulation technology, geometric simulation and physical simulation. Geometric simulation is the premise of mechanical processing. It is a simulation of tool movement. From a geometric point of view, it verifies whether the NC program is correct. The physical simulation is to reveal the essence of machining, consider...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 陈泽忠张扬常智勇蒋超锋苗春生
Owner NORTHWESTERN POLYTECHNICAL UNIV