Five-axis numerical control machining method based on interpolation of vector of cutting tool

A processing method and cutting tool technology, which is applied in the field of five-axis linkage CNC machining, can solve the problems that cannot meet the requirements of five-axis linkage high-speed and high-precision machining, and cannot flexibly control the machining tool vector.

Inactive Publication Date: 2015-05-20
SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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Problems solved by technology

[0004] Aiming at the inability of the existing technology to flexibly control the tool vector during machining and to meet the requirements of five-axis linkage high-spee

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  • Five-axis numerical control machining method based on interpolation of vector of cutting tool
  • Five-axis numerical control machining method based on interpolation of vector of cutting tool
  • Five-axis numerical control machining method based on interpolation of vector of cutting tool

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Embodiment Construction

[0060] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0061] Such as figure 1 As shown, the five-axis numerical control machining algorithm based on tool vector interpolation of the present invention comprises the following steps:

[0062] Tool trajectory planning: While realizing the tool point position planning, the tool vector interpolation calculation in the workpiece coordinate system is performed by using the plane tool vector interpolation algorithm;

[0063] Double NURBS curve fitting: use double NURBS curve fitting method to fit the curve formed by the tool tip point and the second point on the tool axis;

[0064] Interpolation calculation: Interpolate the formed NURBS curve according to the feed rate to obtain the corresponding coordinate values ​​of each axis in the machine tool coordinate system.

[0065] Machine tool kinematics modeling and solution: for specific machine tool mecha...

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Abstract

The invention relates to a five-axis linkage numerical control machining technology, in particular to a five-axis numerical control machining method based on interpolation of a vector of a cutting tool. The five-axis numerical control machining method comprises the following steps of cutting tool track planning: performing interpolation calculation on the vector of the cutting tool under a workpiece coordinate system while the point position of the cutting tool is planned so as to obtain a cutting tool track equation after the vector of the cutting tool is subjected to interpolation and a cutting tool nose point value and a cutting tool vector under the workpiece coordinate system; double-NURBS (non-uniform rational B-spline) curve fitting: performing fitting on a curve formed by a cutting tool nose point and a second point on the axis of the cutting tool by using a double-NURBS curve fitting method; interpolation calculation: performing interpolation on a formed NURBS curve according to a feeding speed so as to obtain corresponding various axis coordinate values in a machine tool coordinate system; and machine tool kinematical modeling and solving: establishing a corresponding machine tool kinematical equation for a specific machine tool mechanism and finishing conversion between two coordinate systems. The five-axis numerical control machining method based on interpolation of the vector of the cutting tool has the advantages of high machining precision and high surface machining quality.

Description

technical field [0001] The invention relates to a five-axis linkage numerical control machining technology, in particular to a five-axis numerical control machining method based on tool vector interpolation. Background technique [0002] Numerical control technology is the core technology in today's advanced manufacturing technology and equipment, reflecting a country's manufacturing technology level. Five-axis linkage CNC technology is the core technology of high-speed and high-precision CNC machining. Its processing technology is reasonable, high in efficiency, and the surface finish of workpieces is good. It is widely used in the manufacture of aircraft, automobiles, ships and other products. [0003] At present, the existing five-axis CNC machining system mostly adopts the method of interpolating the feed axis and changing the direction axis to realize the control of the tool trajectory. This interpolation method has the following problems: First, because the change of ...

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Application Information

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IPC IPC(8): G05B19/19
CPCG05B19/4103G05B2219/34085
Inventor 于东耿聪张函韩旭
Owner SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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