5-Axis Freeform Surface Milling Using Piecewise Ruled Surface Approximation

1997 ◽  
Vol 119 (3) ◽  
pp. 383-387 ◽  
Author(s):  
G. Elber ◽  
R. Fish
Keyword(s):  
Surface Finish ◽  
End Milling ◽  
Ruled Surface ◽  
Freeform Surface ◽  
Freeform Surfaces ◽  
Surface Approximation ◽  
Side Milling ◽  
Scallop Height ◽  
Ball End Milling ◽  
Milling Operation

This paper presents a 5-axis side milling scheme for freeform surfaces based on automatic piecewise ruled surface approximation. With this scheme, resulting surface finish is accurate and pleasing, and has a smaller scallop height compared to ball-end milling. The ruled surface approximation can be made arbitrarily precise resulting in an overall fast milling operation that satisfies tight tolerances, and smoother surface finish. The class of surfaces that can take advantage of this type of 5-axis milling operation includes both convex and saddle-like (hyperbolic) shapes.

Finding Cutter Engagement for Ball End Milling of Tessellated Free-Form Surfaces

2005 ◽  
Author(s):  
Zhiyang Yao
Keyword(s):  
Surface Finish ◽  
Feed Rate ◽  
End Milling ◽  
Geometric Algorithms ◽  
Free Form ◽  
Ball End Milling ◽  
Final Surface ◽  
End Mills ◽  
Free Form Surfaces ◽  
Final Surface Finish

In fabricating free-form surfaces, ball end mills are mainly used to reach the final surface finish requirements. In the milling processes, cutter engagement value measures what portion of the cutter is involved in machining at a given instant of time. This paper presents geometric algorithms for estimating cutter engagement values for ball end milling processes of tessellated free-form surfaces. The cutter engagement value calculated here can be used later on in generating efficient cutter paths, as well as performing adaptive feed rate controls.

Trial of accuracy prediction for ball end milling operation

2004 ◽  
Vol 2004.5 (0) ◽  
pp. 257-258
Author(s):  
Hirohisa NARITA ◽  
Satoshi KATO ◽  
Lian-yu CHEN ◽  
Hideo FUJIMOTO ◽  
Keiichi SSHIRASE ◽  
...  
Keyword(s):  
End Milling ◽  
Ball End Milling ◽  
Milling Operation

Influence of Machining Strategies on Surface Roughness in Ball End Milling of Inclined Surfaces

2012 ◽  
Vol 488-489 ◽  
pp. 836-840 ◽  
Author(s):  
S. Shajari ◽  
M.H. Sadeghi ◽  
H. Hassanpour ◽  
B. Jabbaripour
Keyword(s):  
Surface Roughness ◽  
Tool Path ◽  
End Milling ◽  
Cutting Speed ◽  
Machining Parameters ◽  
Scallop Height ◽  
Inclined Surfaces ◽  
Milling Operation ◽  
Variable Surface ◽  
Machining Strategies

Inclined surfaces are commonly used in the aerospace and die/mold industries. For machining this kind of surfaces, many aspects have to be considered as machinability considerations including milling strategies, machining parameters and etc. In machining, achieving better quality is challenging task. Various tool-path strategies during milling operation leads to variable surface roughness on machined samples. The objective of this study is to analyze different machining strategies in 3-axis milling of a typical curved geometry part. The machining parameters used in this study, are cutting speed, feedrate and stepover. This paper also presents an approach to develop a mathematical model for measuring Scallop height size and distribution for different machining strategies to show that Scallop height size has direct relation with Surface roughness measurements in each strategy. Finally the optimized strategy based on the results was determined.

Machining Error Prediction in Ball End Milling Operation

2004 ◽  
Vol 2004.53 (0) ◽  
pp. 137-138
Author(s):  
Satoshi KATO ◽  
Hirohisa NARITA ◽  
Lian-yi CHEN ◽  
Hideo FUJIMOTO
Keyword(s):  
End Milling ◽  
Error Prediction ◽  
Machining Error ◽  
Ball End Milling ◽  
Milling Operation
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