scholarly journals Tool Orientation Planning Based on Kinematic Relation of Five-Axis CNC Machining Tools in Sculptured Surface Machining

2019 ◽  
Vol 677 ◽  
pp. 052073
Author(s):  
Xianyin Duan ◽  
Can Zhang ◽  
Zerun Zhu ◽  
Xinyue Chen
Keyword(s):  
Cnc Machining ◽  
Sculptured Surface ◽  
Tool Orientation ◽  
Surface Machining ◽  
Sculptured Surface Machining ◽  
Five Axis

Automatic Planning for 5-Axis Sculptured Surface Machining

1994 ◽  
Author(s):  
Yuan-Shin Lee ◽  
Tien-Chien Chang
Keyword(s):  
Sculptured Surface ◽  
Sculptured Surfaces ◽  
Design Modification ◽  
Surface Machining ◽  
Sculptured Surface Machining ◽  
Cutter Path ◽  
Automatic Planning ◽  
Five Axis ◽  
Five Axes ◽  
Complete Operation

Abstract In modern product design, sculptured surfaces are commonly used for functional and artistic shape design. Design of sculptured surfaces is evolutionary, consisting primarily of incremental changes to existing part surfaces. Manual operation planning for sculptured surface machining is known to be error-prone and inefficient, which requires considerable checking, verification, and rework. Five-axis machining has higher productivity and better machining quality than 3-axis machining. However, the programming for 5-axis machining is more difficult due to the complex simultaneous cutter movements along the machine’s five axes. This paper presents a systematic methodology to generate operation plans for 5-axis sculptured surface machining. A complete operation plan and the error-free cutter path can be automatically generated from the CAD part design. To achieve design for manufacturing of sculptured surface products, the machining unfeasibility information can be fed back to the designer for further design modification. Results of computer implementation and testing examples are also presented.

Robust and Efficient Feedrate Selection for 3-Axis Machining

2000 ◽  
Author(s):  
Jeffrey G. Hemmett ◽  
Barry K. Fussell ◽  
Robert B. Jerard
Keyword(s):  
End Milling ◽  
Research Effort ◽  
Mechanistic Model ◽  
Geometric Model ◽  
Experimental Tests ◽  
Cnc Machining ◽  
Sculptured Surface ◽  
Surface Machining ◽  
Sculptured Surface Machining ◽  
Selection Of

Abstract This research effort is focused on improving the efficiency of CNC machining by automatic computer selection of feedrate for 3-axis sculptured surface machining. A feedrate process planner for complex sculptured end milling cuts is described and the geometric model of ball end milling is developed in detail. For each tool move, the geometric model calculates the cut geometry, and a mechanistic model is used along with a maximum allowable cutting force to determine a desired feedrate. The results are written into the part program resulting in a file with optimized feedrates. Experimental tests on a sculptured surface demonstrate the robustness and efficiency of the algorithms in maintaining a desired force.

Configuration-Space Searching and Optimizing Tool Orientations for 5-Axis Machining

Manufacturing ◽  
2002 ◽  
Author(s):  
Cha-Soo Jun ◽  
Yuan-Shin Lee ◽  
Kyungduck Cha
Keyword(s):  
Configuration Space ◽  
High Performance ◽  
Tool Path ◽  
Sculptured Surface ◽  
Tool Orientation ◽  
Machined Surface ◽  
Surface Error ◽  
Surface Machining ◽  
Sculptured Surface Machining ◽  
Rear Gouging

This paper presents a methodology and algorithms of optimizing and smoothing the tool orientation control for 5-axis sculptured surface machining. A searching method in the machining configuration space (C-space) is proposed to find the optimal tool orientation by considering the local gouging, rear gouging and global tool collision in machining. Based on the machined surface error analysis, a boundary search method is developed first to find a set of feasible tool orientations in the C-space to eliminate gouging and collision. By using the minimum cusp height as the objective function, we first determine the locally optimal tool orientation in the C-space to minimize the machined surface error. Considering the adjacent part geometry and the alternative feasible tool orientations in the C-space, tool orientations are then globally optimized and smoothed to minimize the dramatic change of tool orientation during machining. The developed method can be used to automate the planning and programming of tool path generation for high performance 5-axis sculptured surface machining. Computer implementation and examples are also provided in the paper.

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