Closed-loop mode geometric error compensation of five-axis machine tools based on the correction of axes movements

Fu, Guoqiang; Xie, Yunpeng; Gao, Hongli; Deng, Xiaolei

doi:10.1007/s00170-020-05793-x

Cited by 13 publications

(5 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The geometric errors of the positioning surface of the fixture are introduced for clamping the workpiece in a flat vise, and the spatial posture errors of the workpiece in the machine are identified. After identifying the error elements, the error compensation value is solved by using the inverse machine tool kinematic operation based on the tool position points and tool axis vectors obtained from the multi-source error model, and the machining errors are offset by mirroring the error values of the same size [17]. This paper also designs an error element measurement and identification experiment for the process system and a five-axis side-milling machining compensation experiment.…”

Section: Machine Tool Linear Feed Axis Geometric Error Identification...mentioning

confidence: 99%

“…When the process system is moving without error in the ideal state, the ideal tool axis vector in the workpiece coordinate system at this time is obtained from Equation (3) to (17) as In the vertical and horizontal five-axis machining center, there is a motion coupling between the linear feed axis and the rotary axis. Even if the linear feed axis is stationary, only the rotary axis motion will bring about the displacement of the tool position point.…”

Section: Geometric Error Compensation Strategymentioning

confidence: 99%

“…(1) Rotational axis attitude error compensation. When the process system is moving without error in the ideal state, the ideal tool axis vector in the workpiece coordinate system at this time is obtained from Equation (3) to (17) as…”

Section: Geometric Error Compensation Strategymentioning

confidence: 99%

See 2 more Smart Citations

Geometric Error-Based Multi-Source Error Identification and Compensation Strategy for Five-Axis Side Milling

Zhao,

Mao,

Wei

2024

Machines

View full text Add to dashboard Cite

Based on a multi-source error model, this paper discusses the principle of error element identification and uses the mirror bias method to compensate the geometric errors of a process system. Firstly, a nine-line measurement method to determine the geometric error of the linear feed axes of machine tools is introduced, and the geometric error identification model based on the “nine-line method” is established. Then, using a ballbar mounted in the axial, tangential, and radial directions of the machine, the geometric error elements of the rotation axis are identified by three simple measurements in each direction. Subsequently, for the more common flat vise clamping workpiece in actual production, the workpiece position error is identified by using the traditional process of dimensional chain, and the workpiece attitude error is identified by fitting the angle between the positioning plane and the horizontal plane by the least squares method. Finally, based on the tool position points and tool axis vectors obtained from the multi-source error model, the error compensation value is solved using inverse machine tool kinematics to offset the machining error by mirroring the error value of the same size, and based on the “S-shaped specimen” to compensate the processing experiments, after compensation, the processing error is reduced by 30~45%, verifying the effectiveness of the compensation method.

show abstract

Section: Machine Tool Linear Feed Axis Geometric Error Identification...mentioning

confidence: 99%

Section: Geometric Error Compensation Strategymentioning

confidence: 99%

See 1 more Smart Citation

Geometric Error-Based Multi-Source Error Identification and Compensation Strategy for Five-Axis Side Milling

Zhao,

Mao,

Wei

2024

Machines

View full text Add to dashboard Cite

show abstract

“…Computerized numerically controlled (CNC) machines are considered the most powerful tool for industrial production. The precision level of these machines acts as the machining foundation to obtain high precision and accuracy in production processes 2 . CNC machines have different errors that may affect their performance i.e.…”

Section: Introductionmentioning

confidence: 99%

On straightness measurements of large CNC machine tools

ElMelegy,

Zahwi,

Sobhy

2024

Sci Rep

View full text Add to dashboard Cite

The CNC (computerized numerically controlled) machines are widespread in use due to their high capability of precise manufacturing in industrial production. They have a wide range of designs depending on the working capacity in manufacturing. The associated form errors in large-capacity CNC machines during production shall be identified and corrected or eliminated. This study presents an investigation of one of the main form errors that may affect the manufacturing precision of these machines. This error type is a straightness error with both two kinds of horizontal and vertical errors. The study is carried out for a vertical turning center CNC machine type. The straightness errors are measured for the X axis at different latches in the Z direction and for the Z axis at three positions in the X direction with multi-displacement steps. Different algorithms are used in the determination of straightness errors. The X-axis has minimum horizontal straightness errors at latch Nr. 3 and minimum vertical straightness errors at latch Nr. 5. For the Z axis, the minimum values for horizontal and vertical straightness errors exist when the spindle is located 1200 mm away from the machining center to the right. The displacement steps have a significant impact on the determination of straightness errors.

show abstract

“…However, the above modeling method still needs to assign a local coordinate system to each subsystem. In order to further simplify the modeling process, Fu et al [13][14][15] proposed a multi-axis system error modeling method based on product of exponential (POE) theory, and then the geometric error sensitivity evaluation and error compensation were studied. Cheng et al [16] established the NC machine tool error model by using the POE theory, and combined with Morris approach to realize the sensitivity analysis of volume error.…”

mentioning

confidence: 99%

A new method for motion accuracy allocation of mechanical transmission system based on interval intuitionistic trapezoidal fuzzy number and Meta-action theory

et al. 2022

Preprint

View full text Add to dashboard Cite

There are two problems in the traditional motion accuracy allocation process of mechanical transmission system: one is the error modeling process can not reflect the error formation mechanism of the system; the other is the influence of maintenance cost is ignored in the process of establishing the optimal allocation model of motion accuracy. Therefore, the meta-action theory is introduced in this paper and the meta-action unit is taken as the basic analysis unit, the error modeling of the mechanical transmission system is studied and the formation mechanism of the motion error is correctly analyzed. The factors of part manufacturing cost, assembly cost and maintenance cost of unit are comprehensively considered, and the comprehensive cost of mechanical transmission system is accurately evaluated by using multi-criteria decision making (MCDM) method. Then, based on the motion error model of mechanical transmission system, a multi-objective optimal allocation model of motion accuracy is established. The Pareto non-dominated solution set is solved by intelligent algorithm, and the optimal solution is selected by fuzzy set method to realize the allocation of motion accuracy of mechanical transmission system. Finally, the method described in this paper is illustrated by an engineering example.

show abstract

Closed-loop mode geometric error compensation of five-axis machine tools based on the correction of axes movements

Cited by 13 publications

References 36 publications

Geometric Error-Based Multi-Source Error Identification and Compensation Strategy for Five-Axis Side Milling

Geometric Error-Based Multi-Source Error Identification and Compensation Strategy for Five-Axis Side Milling

On straightness measurements of large CNC machine tools

A new method for motion accuracy allocation of mechanical transmission system based on interval intuitionistic trapezoidal fuzzy number and Meta-action theory

Contact Info

Product

Resources

About