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Five-axis side milling machining process parameter design method

A technology of process parameters and design methods, applied in the direction of digital control, electrical program control, etc., can solve the problems of fixed feed and cutting thickness, unable to reflect the processing status, etc.

Inactive Publication Date: 2011-07-20
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0008] The invention provides a method for designing process parameters of five-axis side milling, which solves the problem that in the calculation of cutting force in the existing process parameter design method, the feed and cutting thickness in each cutting area are fixed and cannot reflect the real processing status. Accurate calculation of cutting force provides a reliable guarantee for precise and efficient machining of spatial surfaces

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  • Five-axis side milling machining process parameter design method
  • Five-axis side milling machining process parameter design method
  • Five-axis side milling machining process parameter design method

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0050] The workpiece blank adopted in the embodiment of the present invention is No. 1050 aluminum alloy with a length of 200 mm, a width of 100 mm, and a height of 100 mm. The cutting tool adopted is a commercial carbon steel four-tooth milling cone cutter, and the machine tool adopted is a Mikron600U machining center.

[0051] The process of the embodiment of the present invention is shown in figure 1 , including the following steps:

[0052] (1) Tool path planning: using commercial CAM software Unigraphics NX5 To generate NC code, the input is: tool geometry and surface geometry model; the tool geometry information is: the end diameter of the four-tooth milling cone cutter is 6.25mm, the tool length is 20mm, and the taper is 10 degrees; the surface geometry model is represented by a ruled surface, straight The wire on the textured surface is compo...

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Abstract

The invention discloses a five-axis side milling machining process parameter design method, belongs to the technology of numerical control (NC) machining, and solves the problem that real machining conditions cannot be reflected in cutting force calculation in the conventional process parameter design method. The method comprises the following steps of: tool path planning, cutting force calculation and process parameter optimization; in the tool path planning step, an NC code is generated by using computer-aided manufacturing (CAM) software; in the cutting force calculation step, first, a continuous tool path is generated from the NC code; then, a cutting thickness is obtained; and finally, the cutting force is calculated according to the cutting thickness; and in the process parameter optimization step, whether the calculated cutting force is not greater than a design threshold is judged; if the calculated cutting force is not greater than the design threshold, the NC code, the cutting depth and a feed rate are taken as input parameters; and otherwise, an NC code is regenerated. In the method, the real machining conditions are reflected by utilizing a tool enveloping surface analytical expression and the obtained transient cutting thickness is more accurate, so that the accuracy of the calculation of the cutting thickness and the cutting force is improved, and reliable assurance is provided for precisely and efficiently machining a spatial curved surface.

Description

technical field [0001] The invention belongs to the numerical control processing technology, in particular to a five-axis numerical control side milling processing method for a curved surface. Background technique [0002] Compared with traditional point milling, the processing efficiency of five-axis side milling is generally ten times that of five-axis point milling. In semi-finishing, five-axis side milling has obvious advantages over spot milling. [0003] In the five-axis side milling process, in order to process parts efficiently and precisely, the process parameter design must be carried out first, including tool path planning, cutting force calculation and parameter optimization; [0004] Tool path planning is to generate NC codes by CAM commercial software or CAM free software. NC codes include discrete reference points and discrete points of tool axis vector. year); cutting force calculation, first generate continuous tool path by NC code, get cutting thickness f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/19
Inventor 张小明丁汉熊有伦
Owner HUAZHONG UNIV OF SCI & TECH
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