scholarly journals Investigation on End-mill Cutter Location Based on Constant Feed-speed Vector at Cutting Point with a Five-axis Machining Center

2010 ◽  
Vol 76 (8) ◽  
pp. 912-917 ◽  
Author(s):  
Toshiki HIROGAKI ◽  
Eiichi AOYAMA ◽  
Keiji OGAWA ◽  
Tsugutoshi KAWAGUCHI ◽  
Takahiro HORIUCHI
Keyword(s):  
Feed Speed ◽  
End Mill ◽  
Machining Center ◽  
Mill Cutter ◽  
Five Axis ◽  
Cutting Point

Investigation of Motion Control of Liner Axes and a Rotary Axis Under Constant Feed Speed Vector at Milling Point With a Five-Axis Machining Center

2013 ◽  
Author(s):  
Yuma Maruyama ◽  
Takayuki Akai ◽  
Toshiki Hirogaki ◽  
Eiichi Aoyama ◽  
Keiji Ogawa
Keyword(s):  
Surface Roughness ◽  
Present Report ◽  
Sudden Change ◽  
Machining Accuracy ◽  
Feed Speed ◽  
Motion Error ◽  
Rotary Axis ◽  
Machining Center ◽  
Five Axis ◽  
Cutting Point

Recently, a novel manufacturing technology has spread out with a five-axis machining center. It is especially important to keep the surface roughness on an entire machined surface constant. Thus, we proposed a novel method for maintaining a constant feed speed vector at the cutting point between the end-mill tool and the workpiece surface by controlling two linear axes and a rotary axis with a five-axis machining center. In the present report, we focused on machining the combined inner and outer radius curvature and investigating the influence of synchronous control error between the linear axes and rotary axis on the machining accuracy and surface roughness. As a result, we determined that it is possible to suppress sudden change in the synchronous motion error by accurately aligning the motion direction of the linear and rotary axes and the feed speed vector at milling point at the contact point of the inner and outer circles.

scholarly journals Improvement of machined accuracy under constant feed speed at milling point with a five axis controlled machining center considering approach path

2020 ◽  
Vol 86 (889) ◽  
pp. 20-00175-20-00175
Author(s):  
Takamaru SUZUKI ◽  
Shoya IWAMA ◽  
Toshiki HIROGAKI ◽  
Eiichi AOYAMA
Keyword(s):  
Feed Speed ◽  
Machining Center ◽  
Five Axis

Motion Tuning Method of Linear Axes and Rotary Axis Under a Constant Cutting Speed Vector at End-Milling Point With a Five-Axis Controlled Machining Center

2015 ◽  
Author(s):  
Takamaru Suzuki ◽  
Takakazu Ikegami ◽  
Takayuki Akai ◽  
Toshiki Hirogaki ◽  
Eiichi Aoyama ◽  
...  
Keyword(s):  
Surface Quality ◽  
End Milling ◽  
High Surface ◽  
Cutting Speed ◽  
Surface Shape ◽  
Feed Speed ◽  
Shape Error ◽  
Rotary Axis ◽  
Machining Center ◽  
Five Axis

Recently It is difficult to maintain the high surface quality ingenerating curved surface shape under five-axis controlled end-milling. In this study, we aimed at maintaining feed speed vector at milling point by controlling two linear axes and a rotary axis with a five-axis machining center, to improve machined surface quality and suggested a method for solving shape error of machined workpiece considering differences of three axes’s sarvo characteristics. As the results, it could be seen that shape error greatly decreased based on the proposed method.

Rapid Generation of Surface Dimples Using End Milling

2007 ◽  
Vol 1 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Shinichi Kogusu ◽  
◽  
Takakazu Ishimatsu ◽  
Yasuhiko Ougiya ◽  
Keyword(s):  
Metal Surfaces ◽  
End Milling ◽  
Hydrodynamic Drag ◽  
Cutting Condition ◽  
Feed Speed ◽  
End Mill ◽  
Structured Surfaces ◽  
Machining Center ◽  
High Feed ◽  
Rapid Generation

Structured surfaces on metal are often employed to enhance lubricating features, reduce the hydrodynamic drag force along wings and also decorate the metal surfaces for architectural ornament. It is important to note that only horizontal movements of a ball-end mill at high feed speed generate the indented surface on metal surfaces. In this paper we propose a technique to estimate the dimples generated on the metal surfaces using a machining center with an oval-end mill. Firstly, a technique to simulate the generating process of the dimples with the machining center is explained. The technique is effective in forecasting the geometry of the dimples with accuracy. Secondly, a technique to determine the cutting condition to generate the desired dimpled surface is proposed. The design specifications of the dimpled surface are the geometry of the dimples and the spacing between the dimples. The proposed technique was successfully used to decorate a metal surface.

scholarly journals Study on cutting trace shape control of machined surface by radius end mill with five-axis controlled machining center

2018 ◽  
Vol 84 (860) ◽  
pp. 17-00508-17-00508
Author(s):  
Toshiki HIROGAKI ◽  
Eiichi AOYAMA ◽  
Seigo NAKAMURA ◽  
Masahiro UENOYAMA
Keyword(s):  
Shape Control ◽  
End Mill ◽  
Machined Surface ◽  
Machining Center ◽  
Five Axis

Improved Accuracy of a Machining Tool With a Constant Cutting Speed Vector and Outside Approach Path

2020 ◽  
Author(s):  
Takamaru Suzuki ◽  
Shoya Iwama ◽  
Toshiki Hirogaki ◽  
Eiichi Aoyama ◽  
Takakazu Ikegami ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Cutting Speed ◽  
Feed Speed ◽  
Actual Process ◽  
Shape Error ◽  
Direct Drive ◽  
Wireless Internet ◽  
Machined Surface ◽  
Machining Center ◽  
Five Axis

Abstract A five-axis machining center is equipped with a direct drive motor on a rotary axis and is capable of synchronous control, which makes it a feasible tool for quickly and accurately machining complicated three-dimensional surfaces such as propellers and hypoid gears. However, the accuracy of the machined shape and consistency of the freeform machined surface both need to be improved. We developed a method for maintaining the feed speed vector at the milling point by controlling three axes of the five-axis machining center (two linear and one rotary) to improve the quality of the machined surface considering differences in the servo characteristics of the three axes during the actual process. Experimental results showed that using the proposed method with an outside approach path for the machining tool greatly reduced the shape error. The effectiveness of the proposed method was verified by using a wireless Internet of Things holder to monitor the machining force.

Interference-Free Multi-Axis NC Machining of Cylindrical Cam Using Enveloping Element

2009 ◽  
Vol 419-420 ◽  
pp. 333-336
Author(s):  
Jeng Nan Lee ◽  
Chih Wen Luo ◽  
Hung Shyong Chen
Keyword(s):  
Cutting Tool ◽  
Nc Machining ◽  
Model Material ◽  
Solid Model ◽  
End Mill ◽  
Generating Method ◽  
Collision Problem ◽  
Five Axis ◽  
Cutting Path ◽  
Cutting Simulations

To obtain the flexibility of choice of cutting tool and to compensate the wear of the cutting tool, this paper presents an interference-free toolpath generating method for multi-axis machining of a cylindrical cam. The notion of the proposed method is that the cutting tool is confined within the meshing element and the motion of the cutting tool follows the meshing element so that collision problem can be avoided. Based on the envelope theory, homogeneous coordinate transformation and differential geometry, the cutter location for multi-axis NC machining using cylindrical-end mill is derived and the cutting path sequences with the minimum lead in and lead out are planned. The cutting simulations with solid model are performed to verify the proposed toolpath generation method. It is also verified through the trial cut with model material on a five-axis machine tool.

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