Efficient and direct curved surface numerical control machining method

A processing method and curved surface technology, which is applied in the field of high-efficiency curved surface direct numerical control processing, can solve the problem of no qualitative leap in processing efficiency, and achieve the effects of short processing time, improved processing efficiency and high precision

Inactive Publication Date: 2015-06-17
XIAN TECH UNIV
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Problems solved by technology

The side milling method involved improves the processing conditions, but the method of processing curved surfaces still plans the tool path in the form of points and lines, and realizes cutting with the side edge of the tool. Compared with the traditional five-axis point processing method, the processing efficiency has no qualitative leap

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  • Efficient and direct curved surface numerical control machining method
  • Efficient and direct curved surface numerical control machining method
  • Efficient and direct curved surface numerical control machining method

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Embodiment Construction

[0028] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0029] Realization of the present invention is as a kind of curved surface direct digital control processing method, and its concrete steps have:

[0030] Step a, write the NC machining code according to the surface features of the workpiece;

[0031] Step b, inputting the numerical control machining code of the space ruled surface of the workpiece into the numerical control system;

[0032] Step c, controlling the processing machine tool through the numerical control system to make the tool axis vector parallel to the vector of the starting line of the ruled surface;

[0033] Step d, controlling the rotation of the tool spindle;

[0034] Step e, adjusting the position of the workpiece or the tool so that the side edge of the tool is in tangential contact with the machining start line of the workpiece; ...

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Abstract

The invention relates to an efficient and direct curved surface numerical control machining method. Feature ruled surface interpolation is used as the minimal interpolation unit to replace a traditional point location and curve interpolation method to be used as a basic interpolation unit method. On a numerically-controlled machine tool where the swing, rotation and turning radius adjustment of a tool can be achieved, a circumferential cutting edge of a cylindrical milling cutter is used for machining workpieces, and accordingly the ruled surfaces such as a plane, a cylindrical surface, a conical surface and a spiral surface can be formed directly. A ruled surface interpolation instruction is used as a basic machining instruction, and efficient numerical control machining of the feature ruled surfaces with curved boundaries can be achieved under a numerical control interpolation code. The feature ruled surfaces are used as basic units, so that other curved surfaces are fitted, and machining is completed on the numerically-controlled machine tool where a composite surface machining instruction can be achieved. The numerical control machining method can be used in the numerical control finish machining fields of machines for numerical control milling finish machining, finish machining, numerical control turn-milling machining, numerical control electrolytic machining, numerical control electrosparking and the like.

Description

technical field [0001] The invention relates to the field of numerical control machining, in particular to a method for direct numerical control machining of high-efficiency curved surfaces. Background technique [0002] At present, various known surface numerical control processing technologies such as milling and grinding all use points and lines as the basic unit for approximating or fitting the processed surface, that is, the surface is first divided into smaller planes according to the processing accuracy. slices or curved surfaces, and then use the points and lines that can be directly realized by CNC machine tools to plan the tool path. The distance between adjacent tool positions is determined by the machining accuracy. The higher the accuracy, the denser the tool positions. The more bits of data, the longer the processing time. In this processing method, processing efficiency and error control have always been a pair of contradictions that are difficult to reconcil...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/18
CPCG05B19/4099G05B2219/33001
Inventor 王琨琦余斌高王鹏
Owner XIAN TECH UNIV
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