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Global toolpath modulation–based contour error pre-compensation for multi-axis CNC machining
Contour error compensation is an active research topic in five-axis CNC machining, especially in the manufacturing of sculptured surface parts....
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Pre-compensation of Friction for CNC Machine Tools through Constructing a Nonlinear Model Predictive Scheme
Nonlinear friction is a dominant factor affecting the control accuracy of CNC machine tools. This paper proposes a friction pre-compensation method...
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Contour error dynamic analysis and predictive control for multi-axis motion system
Contour tracking accuracy is the key performance index of a multi-axis motion control system. In the previous design of the contour error feedback...
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NURBS interpolator with pre-compensation based on discrete inverse transfer function for CNC high-precision machining
In the field of computerized numerical control (CNC) machining, high-speed and high-precision machining has been regarded as the key research by many...
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Prediction and compensation strategy of contour error in multi-axis motion system
The contour error of the machined parts is an important index to evaluate the accuracy of CNC machining. Considering a multi-axis servo control...
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An on-line contour error estimation and compensation strategy for five-axis local smoothed trajectory under motion time synchronization
The accurate estimation and effective compensation of contour error are beneficial to the realization of high-speed and high-precision five-axis...
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Real-time estimate and control contour errors for five-axis local smoothed toolpaths based on airthoid splines
Five-axis linear commands are blended as the local smoothed toolpaths by inserting clothoid and airthoid splines at corners in five-axis CNC...
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Smooth trajectory generation based on contour error constraint and parameter correction b-spline
In terms of CNC machining task, high feedrate and high accuracy are of great significance. In this paper, an integrated jerk-limited method of...
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Estimation and compensation for deviation of contour in slow tool servo precision turning for complicated curved surface
In the presence of extremely high precision turning the complicated curved surface with geometry features of large slope gradient and multi...
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Contour Error Visualization and Evaluation Indices for Five-Axis CNC Machine Tools
Five-axis CNC machining is an important component of the modern manufacture industry. The contour error caused by the imperfect servo system...
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A feedrate optimization method for CNC machining based on chord error revaluation and contour error reduction
Interpolation of parametric curves is one of the most effective methods in high-performance computer numerical control (CNC) machining. Its precision...
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Simultaneous servo error pre-compensation and feedrate optimization with tolerance constraints using linear programming
Servo error pre-compensation and feedrate optimization are often performed independently to improve the accuracy and speed of manufacturing machines....
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Diagnosis of two-axis cylindrical grinder machining error
This paper attempts to develop a machining error diagnosis method for classifying the error sources on the external/internal contour surfaces which...
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Accurate and computationally efficient approach for simultaneous feedrate optimization and servo error pre-compensation of long toolpaths—with application to a 3D printer
Feedrate optimization (FO) and servo error pre-compensation (SEP) are often performed independently to improve the accuracy and speed, respectively,...
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Real-time exact contour error calculation of NURBS tool path for contour control
The requirement of high-speed and high-precision contouring with NURBS tool path to the CNC machining process is increasing. The calculation of the...
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Multi-stage error compensation with closed-loop quality control in five-axis flank milling of sculptured surface
Machining efficiency and accuracy are subjected to higher requirements due to the increasingly widespread application of sculptured surface parts in...
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Underwater inertial error rectification with limited acoustic observations
Underwater inertial navigation is particularly difficult for the long-durance operations as many navigation systems such global satellite navigation...
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Research on prediction and compensation strategy of milling deformation error of aitanium alloy integral blisk blade
Integral blisk blades are typical complex curved structures with small thickness, low stiffness, and complex boundaries. Due to the high material...
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Review on mid-spatial frequency error suppression in optical components manufacturing
With the growing prosperity of optical systems, the demand for high-precision optical components is becoming increasingly urgent. The mid-spatial...
