Numerical Control Tool-Path Generation for Subdivision Surface Using Toroidal Cutter on 5-Axis Machine Tool

2011 ◽  
Vol 4 (3) ◽  
pp. 851-858 ◽  
Author(s):  
Zixian Zhang ◽  
Bingyin Ren ◽  
Yixiong Feng ◽  
Ichiro Hagiwara
Keyword(s):  
Machine Tool ◽  
Tool Path ◽  
Tool Path Generation ◽  
Numerical Control ◽  
Path Generation ◽  
Subdivision Surface ◽  
Toroidal Cutter ◽  
Control Tool

Tool Path Generation Based on B-Spline Wavelets

2001 ◽  
Author(s):  
Ranga Narayanaswami ◽  
Junhua Pang
Keyword(s):  
Tool Path ◽  
Fundamental Problem ◽  
Tool Path Generation ◽  
Numerical Control ◽  
Algebraic Complexity ◽  
Path Generation ◽  
Object Boundary ◽  
Machined Surface ◽  
Novel Approach ◽  
Offset Curves

Abstract Tool path generation is a fundamental problem in numerical control machining. Typical methods used for machining 2.5D objects include generation of offset contours using trimmed offset curves and zigzag sequences. The offset contours result in unnecessary detailed curves far away from the object boundary. The zigzag sequences result in frequent stops and changes in tool direction. In this paper we present a novel approach for tool path generation based on wavelet theory. The theory of wavelets naturally leads to a simple cut sequence algorithm that provides valid and efficient coverage of the machined surface. The classical analytical and algebraic complexity in tool path planning is also reduced. In this paper, curves are represented by endpoint interpolating B-splines and their corresponding wavelets. Design and manufacturing examples are also presented in this paper.

Tool Path Generation for 5-Axis Rough Cutting Using Haptic Device

2020 ◽  
Vol 14 (5) ◽  
pp. 808-815
Author(s):  
Koichi Morishige ◽  
Satoshi Mori ◽  
◽  
Keyword(s):  
Tool Path ◽  
Cutting Tool ◽  
Control Program ◽  
Target Object ◽  
Tool Path Generation ◽  
Haptic Device ◽  
Numerical Control ◽  
Path Generation ◽  
Haptic Devices ◽  
Tool Paths

CAM software is generally used to generate tool paths for 5-axis controlled machining. However, adjusting its several parameters and settings is difficult. We propose a system for tool path generation to be applied to 5-axis controlled machining. The system allows machining movements to be established by manipulating haptic devices in a virtual environment. Therefore, the cutter location for 5-axis machining can be easily controlled by operating a virtual cutting tool. The contact between the cutting tool and the target shape is reflected to the user through the haptic device. The generated path can be converted into a numerical control program for the actual machining of the target object. We detail the implementation of the proposed interface using two haptic devices and a method of tool path generation that improves rough cutting by smoothing the generated cutting points and simplifying the tool postures. The effectiveness of the developed system is confirmed through machining simulations.

Study on the Multi-Axis Machining Technology of Helical Gear

2012 ◽  
Vol 522 ◽  
pp. 187-191
Author(s):  
Jia Xi Du ◽  
Hong Shen
Keyword(s):  
Machine Tool ◽  
Collision Detection ◽  
Tool Path ◽  
Helical Gear ◽  
Tool Path Generation ◽  
Machining Process ◽  
Path Generation ◽  
Improve Performance ◽  
Optimal Method ◽  
Gear Profile

In view of characteristics of involute helical gear profile, analyzed the multi-axis machining process for helical gear. Focused on the processing characteristics of helical gear for multi-axis machining, discussed tool path generation, machining program, tool path simulation, cutter interference and collision detection for machine tool and gear profile, seeking out the optimal method and process of helical gear for multi-axis machining. Applying this machining technology in manufacture, it can improve performance of gear, while it can also improve efficiency of manufacture.

Tool path generation for ultra-precision polishing of freeform optical surfaces in an off-axis three-mirror imaging system

2015 ◽  
Vol 231 (5) ◽  
pp. 814-824 ◽  
Author(s):  
Dengpeng Huang ◽  
Lei Zhang ◽  
Shijun Ji ◽  
Ji Zhao
Keyword(s):  
Tool Path ◽  
Imaging System ◽  
Concentric Circle ◽  
Tool Path Generation ◽  
Numerical Control ◽  
Path Generation ◽  
Freeform Surfaces ◽  
Primary Mirror ◽  
Tool Paths ◽  
Ultra Precision

The optical performance of the off-axis three-mirror imaging system can be greatly improved using freeform surfaces. This article focuses on the polishing of the primary mirror and tertiary mirror in an off-axis three-mirror imaging system. The primary mirror and tertiary mirror are fabricated on one monolithic substrate and described by non-uniform rational B-spline–based freeform surfaces. The separated and integrated polishing strategies are presented for polishing the two mirrors on the four-axis computer numerical control polishing platform. A tool path generation approach is proposed for polishing of the non-uniform rational B-spline–based freeform surface. Three kinds of the tool paths are given for ultra-precision polishing of the primary mirror and tertiary mirror with the freeform surfaces. The concentric circle path and the approximately concentric circle path are generated for polishing two mirrors separately, while the spiral path is calculated for integrated polishing of two mirrors simultaneously. The polishing tool posture along the planned tool paths is also analyzed. The ultra-precision polishing experiments of the primary mirror and tertiary mirror on the four-axis computer numerical control polishing platform are performed to verify the proposed approach for tool path generation.

Tool Path Generation for Five-Axis Controlled Machining with Consideration of Motion of Two Rotational Axes

2011 ◽  
Vol 5 (3) ◽  
pp. 412-419 ◽  
Author(s):  
Koichi Morishige ◽  
◽  
Makoto Kaneko
Keyword(s):  
Machine Tool ◽  
Configuration Space ◽  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
Machining Error ◽  
Finished Surface ◽  
Route Searching ◽  
Five Axis ◽  
Original Configuration

In this paper, the original configuration space is applied to generate tool path, which indicate locations of two rotational axes of a 5-axis controlled machine tool. Moreover, A-star algorithm that is one of the methods for route searching is applied to decide tool postures considering the motion of two rotational axes. The developed method can generate tool path limiting the number of used rotational axes, and reducing the moving amount of two rotational axes. Furthermore, the method can generate tool path that avoids the reverse rotation of two rotational axes, which might cause the machining error. As a result, an excellent finished surface is actually obtained, and the usefulness of the developed method is confirmed.

605 Study of a parallel mechanism type machine tool and its tool path generation for high-precision work

2006 ◽  
Vol 2006.43 (0) ◽  
pp. 177-178
Author(s):  
Ryoji HATTORI ◽  
Hiroshi TACHIYA ◽  
Naoki ASAKAWA ◽  
Yoshiyuki KANEKO ◽  
Hiroshi YACHI
Keyword(s):  
Machine Tool ◽  
High Precision ◽  
Parallel Mechanism ◽  
Tool Path ◽  
Tool Path Generation ◽  
Path Generation ◽  
Type Machine

Study on Tool-Path Generation for Ultra-Precision Machining of Optical Lens Array

2012 ◽  
Vol 516 ◽  
pp. 595-599
Author(s):  
Kui Liu ◽  
Pei Ling Liu ◽  
Hu Wu ◽  
Kah Chuan Shaw
Keyword(s):  
Tool Path ◽  
Cutting Tool ◽  
Tool Path Generation ◽  
Numerical Control ◽  
Precision Machining ◽  
Path Generation ◽  
Software Platform ◽  
Optical Lens ◽  
Lens Array ◽  
Ultra Precision

In this study, a computer numerical control (CNC) programming software platform for ultra precision machining of optical surfaces was developed based on an MS Windows application framework and openGL. Using cylindrical coordinates, the tool path can be generated based on the polar angle, radius and a linear coordinate of the Z-axis, as well as cutting tool nose radius compensation. A 3D simulation based on tool path generation was developed for machining verification, which largely reduces the oscillation of the machine during the ultra precision machining process. Ultra precision machining of an optical lens array was carried out on a 5-axis ultra precision machining centre using a single crystalline diamond cutter. The experimental results indicated that the oscillation effect can be largely reduced using the cutting tool path using a super steady machining strategy. This software platform is designed as a framework, where the capability and functions can be expanded by adding in more freeform surface packages.

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