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Study on Flank Milling NC Machining for Ruled Surface Blades

Author: JiangDaoShun
Tutor: CaiYongLin
School: Beijing Jiaotong University
Course: Mechanical Manufacturing and Automation
Keywords: Ruled surface blades Side milling Post-processing CNC machining
CLC: TG547
Type: Master's thesis
Year: 2009
Downloads: 249
Quote: 3
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Abstract


Side milling NC machining leaves of ruled surface , non-uniform B-spline shape blade , the contralateral milling ruled surface error generated to study and propose a flank milling ruled surface leaves the new method , demonstrated by a numerical example of the proposed algorithm has higher precision , given the five-axis post-processing algorithm , the preparation of the NC machining program , and experimental verification . The main contents are as follows : 1. Geometric modeling . B-spline technology backcalculation the ruled surface baseline control vertex positive operator encryption baseline data , and complete ruled surface blades the programming language Matlab6.5 environment , offset surfaces , extended surfaces and the structure of the overall impeller . Analysis of the generation of the error . The single point method to deduce the the ruled surface blade side milling sources of error ; derivation of the two existing algorithms ( two points offset method and the method of least squares ) using the programming language algorithm and error analysis . 3 a side milling ruled surface algorithm - lateral offset algorithm . In the analysis side milling ruled surface error generated on the basis of proposed a new algorithm to improve the problem of excessive side milling error . In addition , error analysis and comparison of the three algorithms , to demonstrate the superiority of the lateral offset algorithm , a numerical example . 4 post-processing . Post- processing algorithms are given for five-axis CNC machine tool CNC center of Beijing Jiaotong University , the preparation of a post-processing algorithm program , and generate NC code . 5 experimental verification . The ruled surface leaves vericut software simulation machining axis CNC machining center in North Jiaotong University trial cut and validation .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Milling and milling machine > Program control milling machine and CNC milling machine
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