A study of interferential tool position correcting algorithms in 3D impeller variable-axis rough plunge milling

Dong, Lei; Wang, Jie

doi:10.1177/09544054221098609

Cited by 4 publications

(2 citation statements)

References 23 publications

(22 reference statements)

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“…For the rough machining of overall impeller runner, Zhang [24] et al proposed a layered plunge milling process strategy. Dong [25] et al proposed an iterative algorithm for the center position and safety height of plunge milling cutter, the planned cutter path can obtain a relatively uniform material residue, which is convenient for subsequent semi-nishing and nishing. Sun [26] et al proposed a cavity plunge milling strategy by using medial axis transform which can easily control the radial cutting depth through the inscribed circle of medial axis.…”

Section: Introductionmentioning

confidence: 99%

Efficient plunge milling cutter and process for two-dimensional cavity

Guo

Wei

Wang

et al. 2023

Preprint

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Plunge milling, as a recognized high-efficiency metal cutting process, is an ideal choice for roughing machining of deep groove and cavity parts. However, due to the severe cutting load of plunge milling, especially the problem of plunge milling collision, and the lack of cavity plunge milling process, its engineering application has always been unsatisfactory. In this paper, starting from the cutter design, the inward-inclined structure of cutting edge is proposed, which can effectively avoid the sharp increase in cutting load caused by plunge milling collision, and realize in-situ cutter retraction. At the same time, the dislocation chip-separation structure of cutting edge is also proposed, which can effectively reduce the plastic deformation of cutting layer, and the maximum cutting force is reduced by about 55%. Based on the design of above high-performance plunging cutter, considering the constraints of material residue and isolated corner, the plunging milling process strategies for open cavity, semi-closed cavity and closed cavity are planned. Finally, the influence law of machining parameters on cutting force is explored. The set up series of verification experiments show that the inward-inclined structure and dislocation chip-splitting structure of plunge milling cutter are reasonable, and the process strategies and machining parameters of cavity plunge milling are feasible. Compared with the traditional layer milling, the machining efficiency is increased by about 3.3 times.

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Section: Introductionmentioning

confidence: 99%

Efficient plunge milling cutter and process for two-dimensional cavity

Guo

Wei

Wang

et al. 2023

Preprint

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“…Among them, CNC based machining process is widely used primarily for components like turbine blades 2 and impellers. 3 Recently, Dong and Wang 4 proposed an iterative algorithm for milling tool interference avoidance for plunge milling (rough milling operation) of impellers. Apart from this, Mali et al 5 gave a brief review of various aspects of free-form surface (in general) milling.…”

Section: Introductionmentioning

confidence: 99%

A Voronoi diagram based framework for fast and accurate evaluation of 2D free-form profile errors

Samuel

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Free-form objects which have vast engineering applications are inspected using coordinate measuring machines (CMM) and non-contact scanners. The output from the devices, that is the measured point-set, must be registered with the reference profile and later inspected for the profile error. Registration is accomplished in two phases, that is coarse registration and fine registration. The most crucial step in the fine-registration stage is the profile error estimation at each point of the measured point-set. Generally, this is accomplished using the point-inversion method, which has relatively high time complexity. This work proposes a two-stage framework based on the Voronoi diagram concept for profile error estimation of 2D free-form profiles. A discretized profile is prepared for the measurement process in the first stage. The profile errors are estimated from the measured point-set using the discretized profile in the second stage. Two profile error estimation technique has been proposed based on Voronoi vertices and the Voronoi edges. The effective time-complexity of the proposed framework is O(lm log n). Implementations were executed on simulated NURBS profiles and practically measured CT-scanner data of two machined airfoils modelled as NURBS profiles. The validation results illustrate that the proposed framework’s accuracy is on par with that of the point-inversion method and is at least 56% faster than the latter; thus making it a fast and accurate alternative for CMM (operated in continuous scanning mode), CNC machine-based (in-situ) and vision-based 2D profile inspection.

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