Research on detection of the linkage performance for five-axis CNC machine tools based on RTCP trajectories combination

Jiang, Zhong Ping; Ding, Jiexiong; Zhang, Jing; Ding, Qichen; Li, Qingzhao; Du, Lan; Wang, Wei

doi:10.1007/s00170-018-2715-1

Cited by 17 publications

(11 citation statements)

References 26 publications

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“…More recently, the corrections applied by dynamic approaches (both RTCP and RTDFO) during motion to maintain a constant relative distance between the tool and workpiece have been incorporated into error modelling strategies, integrating RTCP into a traditional geometric error compensation approach 26 and for detecting linkage performance through the evaluation of RTCP trajectories. 27 Tilted workplane. Unlike the dynamic orientation applied with RTCP and RTDFO, the Tilted Workplane (TW) command is a method of statically reorienting a workpiece to machine simple features but at non-orthogonal angles.…”

Section: Numerical Control Programming Approachesmentioning

confidence: 99%

Comparing approaches for multi-axis kinematic positioning in machine tools

Rooker

Potts²,

Worden

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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Maintaining minimal levels of geometric error in the finished workpiece is of increasing importance in the modern production environment; there is considerable research on the identification, verification and calibration of machine tool kinematic error, and the development of Postprocessor implementations to generate NC-code optimised for machining accuracy. The choice of multi-axis positioning function at the controller, however, is an often-overlooked potential source of kinematic error which can be responsible for costly mistakes in the production environment. This paper presents an investigation into how mis-management of the positional error parameters that define the rotary-axes’ pivot point can lead to unintended variations in multi-axis positioning. Four approaches for kinematic positioning on a Fanuc-based controller are considered, which reference two separate parameter locations to define the pivot point – managing the kinematics within the Postprocessor itself, full five-axis positioning with a fixture offset, full five-axis with rotation tool centre point control and 3+2-axis with a tilted workplane. Error vectors across four sets of rotary-axis indexations are simulated based on the theoretical kinematic model, to highlight the expected differences in geometric error attributable to mismatched pivot point parameters. Finally, the simulation results are verified experimentally, demonstrating the importance of maintaining a consistent approach in both programming and operation environments.

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Section: Numerical Control Programming Approachesmentioning

confidence: 99%

Comparing approaches for multi-axis kinematic positioning in machine tools

Rooker

Potts²,

Worden

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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show abstract

“…The machine tool adopted the open loop CNC system of a UMac platform with independent and controllable features. It could independently add functions according to the actual processing requirements and achieve the RTCP (Rotational Tool Center Point) function through five-axis collaborative work [38,39]. It was able to operate in conjunction with an optical microscope and a contact probe.…”

Section: Fig 2 Ultra-precision Five-axis Cnc Machine Toolmentioning

confidence: 99%

Study of the tool path generation method for an ultra-precision spherical complex surface based on a five-axis machine tool

Xing

Zhao

Cui

et al. 2021

Int J Adv Manuf Technol

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“…The Z axis, Y axis, and C axis constituted the workpiece branch of the machine tool. [38,39]. It was able to operate in conjunction with an optical microscope and a contact probe.…”

Section: Experimental Set-upmentioning

confidence: 99%

Study of The Tool Path Generation Method of an Ultra-Precision Spherical Complex Surface Based on a Five-Axis Machine Tool

Xing

Zhao

Cui

et al. 2021

Preprint

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The improvement of ultra-precision machining technology has significantly boosted the demand for the surface quality and surface accuracy of the workpieces to be machined. However, the geometric shapes of workpiece surfaces cannot be adequately manufactured with simple plane, cylindrical, or spherical surfaces because of their different applications in various fields. In this research, a method was proposed to generate tool paths for the machining of complex spherical surfaces based on an ultra-precise five-axis turning and milling machine with a C-Y-Z-X-B structure. Through the proposed tool path generation method, ultra-precise complex spherical surface machining was achieved. First, the complex spherical surface model was modeled and calculated, and then it was combined with the designed model to generate the tool path. Then the tool paths were generated with a numerically controlled (NC) program. Based on an ultra-precision three-coordinate measuring instrument and a white light interferometer, the machining accuracy of a workpiece surface was characterized, and t[1]he effectiveness of the provided tool path generation method was verified. The surface roughness of the machined workpiece was less than 90 nm. Furthermore, the surface roughness within the spherical region appeared to be less than 30 nm. The presented tool path generation method in this research produced ultra-precision spherical complex surfaces. The method could be applied to complex spherical surfaces with other characteristics.

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Research on detection of the linkage performance for five-axis CNC machine tools based on RTCP trajectories combination

Cited by 17 publications

References 26 publications

Comparing approaches for multi-axis kinematic positioning in machine tools

Comparing approaches for multi-axis kinematic positioning in machine tools

Study of the tool path generation method for an ultra-precision spherical complex surface based on a five-axis machine tool

Study of The Tool Path Generation Method of an Ultra-Precision Spherical Complex Surface Based on a Five-Axis Machine Tool

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