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

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

A tool orientation smoothing method based on machine rotary axes for five-axis machining with ball end cutters

2017 ◽  
Vol 92 (9-12) ◽  
pp. 3615-3625 ◽  
Author(s):  
Rufeng Xu ◽  
Xiang Cheng ◽  
Guangming Zheng ◽  
Zhitong Chen
Keyword(s):  
Smoothing Method ◽  
Tool Orientation ◽  
Rotary Axes ◽  
Five Axis

A corner smoothing method with feedrate blending for linear segments under geometric and kinematic constraints

2020 ◽  
Vol 234 (9) ◽  
pp. 1227-1245 ◽  
Author(s):  
Yong-Bin Zhang ◽  
Tai-Yong Wang ◽  
Jing-Chuan Dong ◽  
Yang-Fan Liu ◽  
Run-Ji Ke
Keyword(s):  
Dynamic Performance ◽  
Smooth Curve ◽  
Optimization Method ◽  
Linear Interpolation ◽  
Smoothing Method ◽  
Linear Segment ◽  
Machining Time ◽  
Smoothing Methods ◽  
Feedrate Scheduling ◽  
One Step

To eliminate the disadvantages of linear interpolation and geometry-based smoothing methods, the one-step corner smoothing method with feedrate blending algorithm for linear segments is proposed in this article. In the proposed method, the variable acceleration and jerk optimization method will be first adopted to determine the dynamic performance of each linear segment for feedrate scheduling, which takes the different axial limits into consideration. Then, the feedrate scheduling method based on the S-type acceleration and deceleration algorithm is implemented to generate smooth feedrate profiles. Moreover, the feedrate blending algorithm is adopted to calculate the corner time analytically within the specified corner error and thus to generate the smooth trajectory without inserting a smooth curve at adjacent linear segments. With the presented one-step corner smoothing method, a smoother and more accurate trajectory could be generated with faster machining time. The results of simulations and machining experiments demonstrate the effectiveness of the proposed method.

scholarly journals Iso-Planar Feed Vector-Fields-Based Streamline Tool Path Generation for Five-Axis Compound Surface Machining With Torus-End Cutters

2018 ◽  
Vol 140 (7) ◽  
Author(s):  
Shuoxue Sun ◽  
Yuwen Sun ◽  
Jinting Xu ◽  
Yuan-Shin Lee
Keyword(s):  
Vector Field ◽  
Vector Fields ◽  
Tool Path ◽  
Tool Path Generation ◽  
Smoothing Method ◽  
Computational Techniques ◽  
Path Generation ◽  
Axis Orientation ◽  
Five Axis ◽  
Compound Surface

This paper presents a new vector-field-based streamline smoothing method in the parametric space and a tool orientation optimization technique for five-axis machining of complex compound surfaces with torus-end cutters. Iso-planar tool path is widely used in the machining of various types of surfaces, especially for the compound surface with multiple patches, but the operations of intersecting the compound surface with a series of planes have depended considerably on the complicated optimization methods. Instead of intersecting the surface directly with planes, a novel and effective tool path smoothing method is presented, based on the iso-planar feed vector fields, for five-axis milling of a compound surface with torus-end cutters. The iso-planar feed vector field in the parametric domain is first constructed in the form of stream function that is used to generate the candidate streamlines for tool path generation. Then, a G1 blending algorithm is proposed to blend the vector fields within the adjacent parametric domains to ensure smooth transition of cross-border streamlines. Based on the smoothened streamlines in the parametric domains, pathlines along with their correspondent side sizes are selected as desirable tool paths. Concerning a high performance machining, detailed computational techniques to determine the tool axis orientation are also presented to ensure, at each cutter contact (CC) point, the torus-end cutter touches the part surface closely without gouging. Both the computational results and machined examples are demonstrated for verification and validation of the proposed methods.

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.

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