The influence of CAD/CAM application driven tool path generation on the design process of electric drive trains for machine tools

2012 ◽  
Author(s):  
Thorsten Schreiner ◽  
Lothar Glasmacher
Keyword(s):  
Design Process ◽  
Electric Drive ◽  
Machine Tools ◽  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
Drive Trains ◽  
Cad Cam

3240 Study on Tool Path Generation for Parallel Mechanism Machine Tools

2008 ◽  
Vol 2008.4 (0) ◽  
pp. 177-178
Author(s):  
Yasuho AOKI ◽  
Hiroshi TACHIYA ◽  
Hiroshi YACHI ◽  
Yusuke MIYAZAKI
Keyword(s):  
Machine Tools ◽  
Parallel Mechanism ◽  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation

HSM Strategies of CAD/CAM Systems — Part I Tool Path Generation

2010 ◽  
Vol 426-427 ◽  
pp. 520-524 ◽  
Author(s):  
Song Lin Ding ◽  
John Mo ◽  
D. Yang
Keyword(s):  
High Speed ◽  
Metal Cutting ◽  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
Cnc Machine ◽  
Technical Requirements ◽  
Cad Cam ◽  
High Feed ◽  
Cutting Processes

Owning to the ultra high feed rate and spindle speed, tool path patterns which are less important in conventional metal cutting processes becomes critical in High Speed Machining (HSM). Without an appropriate tool path strategy HSM can not be fully implemented even though the CNC machine has HSM potentials. In practice attentions are usually drawn to advanced hardware components; tool path pattern catering to HSM is often overlooked. This paper introduces the principles of tool path generation for HSM. Essential properties of HSM and its technical requirements on the CAD/CAM system are summarized. The state-of-the-art technologies and practice-oriented tool path generation methodologies are presented.

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.

Enhanced strategy for milling corners

2002 ◽  
Vol 216 (8) ◽  
pp. 1135-1154 ◽  
Author(s):  
H S Choy ◽  
K W Chan
Keyword(s):  
Computer Aided Design ◽  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
Practical Applications ◽  
Cutting Resistance ◽  
Pocket Milling ◽  
Cad Cam ◽  
Contour Parallel Tool Path ◽  
Aided Design

Tool path generation based on contour-parallel offset has many practical applications, especially in pocket milling. However, the tool path segments offset from the pocket boundary usually form many corners. In milling operation, these corners with accumulated material will have an adverse effect on milling performance. This paper proposes an improved numerically controlled (NC) tool path pattern for pocket milling. Bow-like tool path segments are appended to a conventional contour-parallel tool path at the corner positions. The cutter loops along the appended tool path so that the corner material is machined progressively in several passes. By adjusting the number of appended tool path loops, cutting resistance can be controlled. The proposed tool path generation for dealing with different corner shapes was implemented as an addon user function in a computer aided design/manufacture (CAD/CAM) system. Cutting tests confirmed that the proposed tool path pattern is useful for clearing accumulated material at pocket corners while maintaining a higher cutting stability.

A Dedicated CAD/CAM System for 5-Axis Machining of Marine Propeller

2001 ◽  
Author(s):  
Jae-Woong Youn ◽  
Yongtae Jun ◽  
Sehyung Park
Keyword(s):  
Lead Time ◽  
Tool Path ◽  
General Purpose ◽  
Tool Path Generation ◽  
Path Generation ◽  
Marine Propeller ◽  
Marine Propellers ◽  
Tool Paths ◽  
System Validation ◽  
Cad Cam

Abstract The manufacture of a marine propeller typically requires long lead-time to generate 5-axis tool paths. It usually takes several days to manufacture a satisfactory propeller with a general purpose CAD/CAM system. This paper proposes a novel methodology for tool path generation of 5-axis machining of marine propellers. Using the geometric characteristics of propellers, the system first computes check vectors and then generates interference-free tool paths. An iterative NURBS modeling technique is used to improve the accuracy of the models and to increase the productivity. The system has been implemented with C++ and OpenGL graphic library on the Windows system. The system validation and sample results are also given and discussed.

An Adaptive Tool Path Generation for Large Scale Wedge/Aspheric Lens Element Grinding Based on Isophote Interpolation

2011 ◽  
Vol 175 ◽  
pp. 121-125
Author(s):  
Ning Ning Zhang ◽  
Chen Jiang ◽  
Zhen Zhong Wang ◽  
Yin Biao Guo
Keyword(s):  
Large Scale ◽  
Tool Path ◽  
Tool Path Generation ◽  
Cnc Machining ◽  
Numerical Control ◽  
Path Generation ◽  
Aspheric Lens ◽  
Lens Element ◽  
Wedge Prism ◽  
Cad Cam

Large scale wedge/aspheric lens element is a combination of wedge prism and aspheric lens as a single piece component forming a decentred lens, which is primarily manufactured by Computerized Numerical Control (CNC) machining, especially 3-axis CNC grinding. This paper presents an efficient tool path generation approach based on isophote interpolation. The interpolation guarantees that interpolated points always stay on the iso-inclination curve of the parametric surface. This symmetry ensures that the method can improve and automate large scale wedge/aspheric lens element machining for 3-axis CAD/CAM systems. As part of the validation process, the tool paths generated are analyzed and compare with the desired part.

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