Research on the application of NURBS interpolation

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Research on the application of NURBS interpolation technology in high-speed machining


nurbs has been widely used in the field of CAD. However, its application in the field of cam is relatively lagging behind, and international cooperation and exchange are actively carried out. High speed and ultra-high speed machining is characterized by high efficiency, high precision, high flexibility and high quality. It is not only applied to aluminum, cast iron and steel, but also applied to the processing of high hard materials, which is regarded as a new direction in the field of modern processing technology. Compared with traditional NC machining, high-speed machining has different requirements for machine tool spindle, cutter, computer NC system, servo feed system and NC programming method. The application of NURBS interpolation technology in the field of NC machining is a supporting technology developed with high-speed machining, which will greatly improve the overall level of NC machining technology. With the passage of time, its Zhuo Jinan experimental machine factory experimental machine is being upgraded, and the technical performance of China and Vietnam will get greater development

It is also easy to cause oil leakage.

with the rapid development of high-speed machining, the application of NURBS in the field of cam has been widely valued. Many high-end CAM systems such as experimental reports, experimental parameters, system parameters, etc. can be stored in the form of files. The system has supported NURBS interpolation tool path. As part of the CNC materialized by cad/cam information, some CNC systems such as FANUC, Siemens and Mitsubishi have supported NURBS interpolation

The NURBS curve of order

p is defined as

, where Pi is the control point (forming the control polygon); Wi is the weight factor; Ni-P (U) is a B-spline basis function of order P, and its node vector is u={a,..., Q, up+1,..., um-p-1, B,..., b} unless otherwise stated, it is generally assumed that a=0, b=1 and WI for all I

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