3P1-L01 Foamed Polystyrene Machining Robot using Trajectory Following Controller based on Cutter Location Data(Robots for Works (1))

2014 ◽  
Vol 2014 (0) ◽  
pp. _3P1-L01_1-_3P1-L01_3
Author(s):  
Akimasa OTSUKA ◽  
Fusaomi NAGATA ◽  
Kohsuke NAKAMURA
Keyword(s):  
Location Data ◽  
Machining Robot ◽  
Trajectory Following ◽  
Cutter Location Data

NURBS Curve Fitting Based on Arc Centripetal Parameterization for Tool Path Generation

2013 ◽  
Vol 274 ◽  
pp. 121-123 ◽  
Author(s):  
Cun Guang Yu
Keyword(s):  
Curve Fitting ◽  
Tool Path ◽  
Nc Machining ◽  
Tool Path Generation ◽  
Sculptured Surface ◽  
Arc Length ◽  
Tool Path Planning ◽  
Nurbs Curve ◽  
Location Data ◽  
Cutter Location Data

NURBS curve fitting is used for tool path planning for sculptured surface NC machining. The cutter location data is parameterized by equal chord arc length parameterization, and Centripetal Parameterization is improved. It is not only more approach to curves nature equation in theory, but also closer to the interpolated curves in actual fitting. It is directly to reflect the curvature of curves of cutter location in NC machining.

Stick-slip motion control based on cutter location data for an orthogonal-type robot

2010 ◽  
Vol 15 (1) ◽  
pp. 106-110
Author(s):  
Fusaomi Nagata ◽  
Takanori Mizobuchi ◽  
Shintaro Tani ◽  
Tetsuo Hase ◽  
Zenku Haga ◽  
...  
Keyword(s):  
Motion Control ◽  
Stick Slip ◽  
Location Data ◽  
Stick Slip Motion ◽  
Cutter Location Data ◽  
Slip Motion

Geometric deviation reduction method for interpolated toolpath in five-axis flank milling of the S-shaped test piece

2019 ◽  
Vol 234 (5) ◽  
pp. 910-919 ◽  
Author(s):  
Liping Wang ◽  
Weitao Li ◽  
Hao Si ◽  
Xing Yuan ◽  
Yuzhe Liu
Keyword(s):  
Test Piece ◽  
Reduction Method ◽  
Linear Interpolation ◽  
Machining Process ◽  
Flank Milling ◽  
Machined Surface ◽  
Location Data ◽  
Geometric Deviation ◽  
Five Axis ◽  
Cutter Location Data

Geometric deviation, defined as the distance between the designed surface and the machined surface, is an important component of machining errors in five-axis flank milling of the S-shaped test piece. Since the interpolated toolpath in practical machining process is the approximation of the theoretical toolpath, the geometric deviation caused by the interpolated toolpath appears. To overcome this problem, a novel geometric deviation reduction method is suggested in this study. First, the features of the S-shaped test piece are analyzed. Second, the theoretical toolpath is generated according to the designed surface and the cutter location data is obtained by discretizing the theoretical toolpath. The linear interpolation of the cutter location data is carried out to obtain the interpolated toolpath. Then, the geometric deviation is modeled by calculating the Hausdorff distance between the tool axis trajectory surface based on the interpolated toolpath and the offset surface of the designed surface. Finally, the geometric deviation is reduced by optimizing the cutter location data without inserting more cutter location points. The machining experiment is conducted to verify the effectiveness of the proposed method. The experimental results agree with the simulation results, and both of them indicate the geometric deviation on the machined surface reduces after optimization.

A New Compensation Method for Multi-Choice of a Five-Axis Machine with a Tilting Head

2013 ◽  
Vol 364 ◽  
pp. 386-390
Author(s):  
Chun Hui Yin ◽  
Huai Jing Jing ◽  
Nuo Di Huang ◽  
Fei Ren
Keyword(s):  
Coordinate Transformation ◽  
Choice Function ◽  
Control Data ◽  
Mechanism Model ◽  
Location Data ◽  
Nc Programming ◽  
Cutting Experiment ◽  
Machine Control ◽  
Five Axis ◽  
Cutter Location Data

Postprocess capable of converting the cutter location data to machine control data is an important interface between the NC programming design and manufacture.Due to the fact that current research on multi-axis postprocess methods mostly deals with machine tool configurations whose linear and rotational movements are orthogonal, an efficient postprocess algorithm for the five-axis machine with a tilting head is presented in this paper.DMU 80P which is a five-axis machine with a tilting head is selected as an example.Its mechanism model is proposed in this paper according to the mechanism theory.The kinematics model is established using coordinate transformation,and the solution of this model is discussed.Based on these,a window-based post-processor with multi-choice function was developed by VS2010 language.Through the verification by the commercial solid cutting software VERICUT,the feasibility of the algorithm proposed is demonstrated.At last,a real impeller cutting experiment has been conducted and the result further verifies the correctness of the algorithm.

Solid Modeling and Machining Approach of the Impeller Based on Five-Axis Machine Tool

2011 ◽  
Vol 189-193 ◽  
pp. 801-804 ◽  
Author(s):  
Yu Xia Zhao ◽  
Jie Jian Di ◽  
De Wen Gao
Keyword(s):  
Cutting Tool ◽  
Cnc Machining ◽  
Centrifugal Impeller ◽  
Software Simulation ◽  
Location Data ◽  
Geometry Model ◽  
The Core ◽  
Engine Components ◽  
Five Axis ◽  
Cutter Location Data

An impeller is the core of aviation engine components, the processing quality has a decisive impact on the performance of the engine. An impeller is also one of the most important basic components of centrifugal compressor. When a three-axis CNC machining centre is used for producing an impeller, great difficulties, i.e. collisions between the cutting tool and the impeller, can occur. As the surface is normally twisted in design to achieve the required performance, it can cause overcut and collision problems during machining. To solve these problems, an integrated five-axis machining approach for a centrifugal impeller by combining related machining technologies is developed. As a result, Cutter Location data based on the geometry model of blade and hub of the impeller are generated. Finally, the Cutter Location data is verified through software simulation. The results prove that the machining methodology adopted is useful and efficient.

scholarly journals Performance Test of a Force Controlled Robot Sander Using a Surface Following Controller Based on Cutter Location Data.

2002 ◽  
Vol 68 (7) ◽  
pp. 953-957 ◽  
Author(s):  
Fusaomi NAGATA ◽  
Keigo WATANABE ◽  
Kunihiro TSUDA ◽  
Syuji KAWAGUCHI ◽  
Yoshihiro FUJIMOTO ◽  
...  
Keyword(s):  
Performance Test ◽  
Location Data ◽  
Cutter Location Data

Generation of Five-Axis Cutter Paths for a Ball-End Cutter With Global Interference Checking

1998 ◽  
Author(s):  
Der Min Tsay ◽  
Wei Feng Yan
Keyword(s):  
End Mill ◽  
Ball End Mill ◽  
Location Data ◽  
Tool Paths ◽  
Contact Points ◽  
Surface Data ◽  
Five Axis ◽  
Interference Checking ◽  
Cutter Location Data ◽  
Projected Distance

A simple, yet useful procedure is developed to generate tool paths with global interference checking for five-axis machining of turbomachinery components with complex geometries. Based on the projected distance between the surface data and the cutter-axis of a cylindrical ball-end mill, interference between the surface of a workpiece and the cutter can be detected. Given the cutter contact points of the surface and the cutter’s size, it can produce the cutter location data without incurring interference through relatively rotating and tilting the workpiece. Applications of the developed approach to five-axis machining of centrifugal compressor impellers with thirteen and fifteen blades are illustrated to demonstrate the usefulness and reliability of the procedure.

Feed Rate Control Using Fuzzy Reasoning for a Mold Polishing Robot

2006 ◽  
Vol 18 (1) ◽  
pp. 76-82 ◽  
Author(s):  
Fusaomi Nagata ◽  
◽  
Keigo Watanabe ◽  
Keyword(s):  
Rate Control ◽  
Feed Rate ◽  
Tangential Velocity ◽  
Fuzzy Reasoning ◽  
Time Cost ◽  
Polishing Process ◽  
3D Cad ◽  
Location Data ◽  
Metallic Mold ◽  
Cutter Location Data

Reducing time cost of polishing process is a major issue in metallic mold manufacturing. The feed rate, i.e., tangential velocity, of a polishing robot is generally limited to maintain stable contact with workpieces having a large curvature. We propose a feed rate generator using fuzzy reasoning for polishing robots that regulates the feed rate along free-formed surfaces appropriately. The smaller the curvature of the model designed by a 3D CAD, the larger the distance between two adjacent cutter location data (CL data) steps generated by the main processor of CAM. Therefore, given curvature results in acquiring the distance between two adjacent steps of CL data. We also propose a hybrid position/force controller with the feed rate generator enabling the robot to conduct polishing efficiently. Experiments show promising results.

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