Feedrate scheduling of a five-axis hybrid robot for milling considering drive constraints

2021 ◽  
Vol 112 (11-12) ◽  
pp. 3117-3136
Author(s):  
Guangxi Li ◽  
Haitao Liu ◽  
Wei Yue ◽  
Juliang Xiao
Keyword(s):  
Feedrate Scheduling ◽  
Five Axis

An Implementation of Analytical Boundary Simulation on Feedrate Scheduling during Semi-Finish Milling

2016 ◽  
Vol 851 ◽  
pp. 211-215
Author(s):  
Hendriko Hendriko
Keyword(s):  
Cutting Forces ◽  
Machining Process ◽  
Depth Of Cut ◽  
Force Model ◽  
Cutting Force Model ◽  
Feedrate Scheduling ◽  
Helical Angle ◽  
Result Show ◽  
Five Axis ◽  
Good Agreement

In five-axis milling, determining the continuously changing Cutter Workpiece Engagement (CWE) remains a challenge. All the feedrate calculation method that have been reported need a precise information about Cutter Workpiece Engagement. In this paper, the cut geometry was calculated using an analytical method called Analytical Boundary Simulation (ABS). This method was reported accurate and less expensive in term of calculation time. The cut geometry data was then used to calculate the instantaneous cutting forces. A new mechanistic force model was developed by taken into account the variation of axial depth of cut, the feedrate, the tool orientation, and the helical angle. Analytical boundary simulation and mechanisitic cutting force model were then used to optimize a semi finish machining process using feedrate scheduling. The applicability of the proposed method was verified experimentally and the result show that the calculated cutting forces of feedrate scheduling have a good agreement with those obtained from the experimental work.

scholarly journals A Novel Local Smoothing Method for Five-Axis Machining With Time-Synchronization Feedrate Scheduling

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 89185-89204 ◽  
Author(s):  
Xiaoyong Huang ◽  
Fei Zhao ◽  
Tao Tao ◽  
Xuesong Mei
Keyword(s):  
Time Synchronization ◽  
Smoothing Method ◽  
Local Smoothing ◽  
Feedrate Scheduling ◽  
Five Axis

Look-ahead-window-based interval adaptive feedrate scheduling for long five-axis spline toolpaths under axial drive constraints

2020 ◽  
Vol 234 (13) ◽  
pp. 1656-1670
Author(s):  
De-Ning Song ◽  
Yu-Guang Zhong ◽  
Jian-Wei Ma
Keyword(s):  
High Efficiency ◽  
Cutting Tool ◽  
Joint Space ◽  
Cartesian Space ◽  
Feedrate Scheduling ◽  
Look Ahead ◽  
Scheduling Method ◽  
The Look ◽  
Current Interval ◽  
Five Axis

Scheduling of the five-axis spline toolpath feedrate is of great significance for high-quality and high-efficiency machining using five-axis machine tools. Due to the fact that there exists nonlinear relationship between the Cartesian space of the cutting tool and the joint space of the five feed axes, it is a challenging task to schedule the five-axis feedrate under axial drive constraints. Most existing methods are researched for routine short spline toolpaths, however, the five-axis feedrate scheduling method expressed for long spline toolpaths is limited. This article proposes an interval adaptive feedrate scheduling method based on a dynamic moving look-ahead window, so as to generate smooth feedrate for long five-axis toolpath in a piecewise manner without using the integral toolpath geometry. First, the length of the look-ahead window which equals to that of the toolpath interval is determined in case of abrupt braking at the end of the toolpath. Then, the interval permissible tangential feed parameters in terms of the velocity, acceleration, and jerk are determined according to the axial drive constraints at each toolpath interval. At the same time, the end velocity of the current interval is obtained through looking ahead the next interval. Using the start and end velocities and the permissible feed parameters of each interval, the five-axis motion feedrate is scheduled via an interval adaptive manner. Thus, the feedrate scheduling task for long five-axis toolpath is partitioned into a series of extremely short toolpaths, which realizes the efficient scheduling of long spline toolpath feedrate. Experimental results on two representative five-axis spline toolpaths demonstrate the feasibility of the proposed approach, especially for long toolpaths.

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