5-Axis machining speed enhancement by step length optimization

So, Bum-Sik; Jung, Young-Ho; Hwang, Sang-Moon

doi:10.1016/j.jmatprotec.2006.11.167

Cited by 11 publications

(4 citation statements)

References 5 publications

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“…A polynomial approximation is presented in equation (16). It is achieved by quintic polynomial, since this degree allows approximating the feed-rate until the second derivative (jerk) [10].…”

Section: Kinematic Profilementioning

confidence: 99%

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Methodology for obtaining C3 continuity on tool trajectory featuring acceleration and jerk constraint on computer numerical control machine

Rivera-Guillen

Romero-Troncoso

Osornio-Ríos

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part C:

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High-quality material manufacture requires the improvement of the computer numerical control (CNC) machine performance. Such task can be achieved by considering the tool trajectory, in which it is important to minimize the acceleration and jerk levels. Previous research works are focused on providing smooth movements at most with C2 continuous trajectories, and the results of using C3 continuity in the trajectory are not evaluated. The contribution of this study is the design of a methodology for obtaining C3 tool trajectories while acceleration and jerk levels are constrained through adaptive feed-rate. C3 and C2 trajectories are executed in a CNC machine. Speed, acceleration, and jerk are monitored in order to validate the proposed methodology and to analyse and quantify the differences between using C2 and using C3 trajectories.

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Section: Kinematic Profilementioning

confidence: 99%

“…This demonstrates that a good trajectory generation improves the geometric workpiece finishing. Not only do unsmooth toolpaths cause severe cutting force jerk but they also wear down the tool [16]. Smooth tool trajectories maintain high tracking accuracy and vibration-reduced movements allowing high-speed machine operation [2, 3].…”

Section: Introductionmentioning

confidence: 99%

Methodology for obtaining C3 continuity on tool trajectory featuring acceleration and jerk constraint on computer numerical control machine

Rivera-Guillen

Romero-Troncoso

Osornio-Ríos

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…At present, these complex parts are mainly machined using methods including 5 axis-of-freedom NC machining ， electrolytic machining, electro-discharge machining，linear friction welding and precision casting. However, the common drawbacks for the above methods are the low material utilization and low efficiency [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Hot Isostatic Pressing of Ti6Al4V Alloys Monolithic Bladed Disks

Peng

Wei

et al. 2014

AMM

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Near-net-shaping hot isostatic pressing (NNS-HIP) method was used for once-forming complex monolithic Ti6Al4V alloy bladed disks manufacturing. The complex monolithic bladed disks were formed successfully in a near-net-shape manner using the proposed HIP mold scheme in this study. The results showed that there were fine and homogeneous strip α+β phases and no obvious pores or cracks were detected. A "layered" phenomenon was observed in as-built part microstructure. The tensile strength value of specimens from the NNS-HIP bladed disks in the same furnace reached 900MPa, which was higher than the values of parts manufactured using casting and forging processes. The fracture morphology analysis showed that the sample had a ductile fracture. This study provides a reference to the NNS-HIP for the bladed disk parts manufacturing.

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“…To improve geometric accuracy and surface integrity of turbine blades, Lim et al (2002) evaluated cutter orientations in five-axis high-speed milling and measured workpiece deflection as well as surface roughness. To enhance fiveaxis machining speed, So et al (2007) optimised the step length of NC data by extracting given NC data and then smoothing tool paths through cubic spline interpolation. Therefore, the machining speed and the machining operation of the specified machine can then be maximised and smoothed.…”

Section: Introductionmentioning

confidence: 99%