scholarly journals Automated Tool Path Generation for Roughing Using Flat Drill

2020 ◽  
Vol 14 (6) ◽  
pp. 1036-1044
Author(s):  
Isamu Nishida ◽  
◽  
Hidenori Nakatsuji ◽  
Keiichi Shirase
Keyword(s):  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
Chatter Vibration ◽  
End Mill ◽  
Machining Time ◽  
Multiple Products ◽  
Cutting Experiment ◽  
Multiple Holes ◽  
Automated Tool

A method to calculate tool path uniquely for roughing using a flat drill is proposed. A flat drill is a drill with a flat tip. Unlike a square end mill, it cannot feed a tool laterally, but it is suitable for machining to feed a tool longitudinally. The advantage offered by the flat drill is expected to reduce machining troubles, such as tool breakages and chatter vibration, owing to the axial sturdiness of the tool. Furthermore, it can be used to machine lapped holes that cannot be machined with a normal drill owing to its flat tip. Hence, roughing using a flat drill by drilling multiple holes at constant intervals is proposed herein. Furthermore, in this method, a tool path for semi-finishing is generated only on the remaining region. A cutting experiment is conducted to validate the effectiveness of the proposed method. The result of the cutting experiment confirmed the effectiveness of the proposed method based on the machining time and the productivity of machining multiple products simultaneously.

Use of a virtual milling system to generate power-aware tool paths for 2.5-dimensional pocket machining

2019 ◽  
Vol 233 (13) ◽  
pp. 2419-2435 ◽  
Author(s):  
David Manuel Ochoa González ◽  
Joao Carlos Espindola Ferreira
Keyword(s):  
Power Consumption ◽  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
Machining Time ◽  
Power Requirement ◽  
Pocket Machining ◽  
Direction Parallel ◽  
Generation Algorithm ◽  
Tool Paths

Traditional (direction-parallel and contour-parallel) and non-traditional (trochoidal) tool paths are generated by specialized geometric algorithms based on the pocket shape and various parameters. However, the tool paths generated with those methods do not usually consider the required machining power. In this work, a method for generating power-aware tool paths is presented, which uses the power consumption estimation for the calculation of the tool path. A virtual milling system was developed to integrate with the tool path generation algorithm in order to obtain tool paths with precise power requirement control. The virtual milling system and the tests used to calibrate it are described within this article, as well as the proposed tool path generation algorithm. Results from machining a test pocket are presented, including the real and the estimated power requirements. Those results were compared with a contour-parallel tool path strategy, which has a shorter machining time but has higher in-process power consumption.

A novel tool-path generation method for five-axis flank machining of centrifugal impeller with arbitrary surface blades

2016 ◽  
Vol 231 (1) ◽  
pp. 155-166 ◽  
Author(s):  
Hong-Zhou Fan ◽  
Shang-Jin Wang ◽  
Guang Xi ◽  
Yan-Long Cao
Keyword(s):  
Tool Path ◽  
Tool Path Generation ◽  
Ruled Surface ◽  
Centrifugal Impeller ◽  
Flank Milling ◽  
Path Generation ◽  
Rough Machining ◽  
Machining Time ◽  
Geometrical Structures ◽  
Five Axis

The centrifugal impeller with arbitrary surface blades is a very important component in automobile, ships, and aircraft industry, and it is one of the most difficult parts to process. Focusing on the machining efficiency improvement, combining the geometric advantages of ruled surface and arbitrary surface, and utilizing the efficient and accurate advantages of flank machining and point machining, this article presents a novel and targeted tool-path generation method and algorithm for five-axis flank machining of centrifugal impeller with arbitrary surface blades. In light of specific characters of different surfaces, the analyses of two different impeller blades are proposed first, the more characteristic and complex geometrical structures of the arbitrary blade are achieved. In rough machining, an approximate ruled surface blade is obtained, and a simple channel is achieved; the flank milling of the centrifugal impeller with ruled surface blades is achieved relative to the point milling of the centrifugal impeller with arbitrary surface blades; and the triangle tool path planning method is added in this process to save the machining time and cost collectively. Furthermore, in semi-finish machining, the approximate sub-ruled blade surfaces are calculated, and a new flank milling method of the sub-ruled blade surfaces is achieved; a new solution for tool interference is achieved in this process and the generation of non-interference tool paths becomes easy. Machining experiments of two different impellers are presented as a test of the proposed methods.

The Tool Path Generation by Using Configuration Space for Five-Axis Controlled Machining - Application to Rough Cutting by Using Square End Mill -

2010 ◽  
Vol 447-448 ◽  
pp. 292-296
Author(s):  
Takuya Masuda ◽  
Koichi Morishige
Keyword(s):  
Machine Tool ◽  
Configuration Space ◽  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
End Mill ◽  
Five Axis

In recent years, five-axis controlled machine tool attracts attention from the increase in demand for improvement of productivity. Five-axis controlled machine tool which is added two axes for rotating and tilting to three translational axes, and can give arbitrary tool attitudes for a workpiece.

scholarly journals Automated Unsupervised 3D Tool-Path Generation Using Stacked 2D Image Processing Technique

2019 ◽  
Vol 3 (4) ◽  
pp. 84
Author(s):  
Tadele Belay Tuli ◽  
Andrea Cesarini
Keyword(s):  
Tool Wear ◽  
Tool Path ◽  
Closed Form Solution ◽  
Tool Path Generation ◽  
Image Processing Technique ◽  
Depth Of Cut ◽  
Path Generation ◽  
Machining Parameters ◽  
Machining Time ◽  
G Code

Tool-path, feed-rate, and depth-of-cut of a tool determine the machining time, tool wear, power consumption, and realization costs. Before the commissioning and production, a preliminary phase of failure-mode identification and effect analysis allows for selecting the optimal machining parameters for cutting, which, in turn, reduces machinery faults, production errors and, ultimately, decreases costs. For this, scalable high-precision path generation algorithms requiring a low amount of computation might be advisable. The present work provides such a simplified scalable computationally low-intensive technique for tool-path generation. From a three dimensional (3D) digital model, the presented algorithm extracts multiple two dimensional (2D) layers. Depending on the required resolution, each layer is converted to a spatial image, and an algebraic analytic closed-form solution provides a geometrical tool path in Cartesian coordinates. The produced tool paths are stacked after processing all object layers. Finally, the generated tool path is translated into a machine code using a G-code generator algorithm. The introduced technique was implemented and simulated using MATLAB® pseudocode with a G-code interpreter and a simulator. The results showed that the proposed technique produced an automated unsupervised reliable tool-path-generator algorithm and reduced tool wear and costs, by allowing the selection of the tool depth-of-cut as an input.

scholarly journals Tool Path Generation for Five-Axis Control Semi Finishing by Use of Square End Mill

2012 ◽  
Vol 78 (793) ◽  
pp. 3305-3316 ◽  
Author(s):  
Noriyuki NATSUME ◽  
Keiichi NAKAMOTO ◽  
Tohru ISHIDA ◽  
Yoshimi TAKEUCHI
Keyword(s):  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
End Mill ◽  
Five Axis

Tool-Path Generation for Conical Groove of Cylindrical Cams by Small-Sized Cutting Tools

2011 ◽  
Vol 189-193 ◽  
pp. 3046-3049
Author(s):  
Jui Pin Hung ◽  
Kuan Lin Chiu ◽  
Yuan Lung Lai
Keyword(s):  
Machine Tools ◽  
Tool Path ◽  
Cutting Tools ◽  
Tool Path Generation ◽  
Path Generation ◽  
End Mill ◽  
Diagram Method ◽  
Tool Paths ◽  
Nc Program ◽  
Generating Method

Instead of 2D expanding diagram method, this paper presents a new regenerating method for cutter location paths of using smaller tools to produce cylindrical cams. According to the expected motions, cams are put to use in various applications in mechanism. For a cylindrical cam, the roller follower operates in a groove cut on the periphery of an end mill with the diameter same as the roller. By using the conventional method, full-sized cutting tools, will restrict the flexibility of choosing cutting tools for wide roller guide. The manufacture of cylindrical cams is complicate and precise work that depends on the generating method and types of machine tools employed. Since the guiding curve cannot be offset exactly along the cylindrical surface, this leads to some approximating problems. Though the tool-paths generation by using the same size tools as rollers is applied in practice, the study of NC program by unequal tools is not available to meet high precision requirement. This proposed 3D offset-based generating method can regenerate tool-paths for standard cutting tools instead of larger ones and implemented on computerized CAM system. Examples with wider grooves are demonstrated to prove its effectiveness.

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