scholarly journals Geometry and tool motion planning for curvature adapted CNC machining

2021 ◽  
Vol 40 (4) ◽  
pp. 1-16
Author(s):  
Michael Bartoň ◽  
Michal Bizzarri ◽  
Florian Rist ◽  
Oleksii Sliusarenko ◽  
Helmut Pottmann
Keyword(s):  
Motion Planning ◽  
Cnc Machining ◽  
Tool Motion

scholarly journals Geometry and tool motion planning for curvature adapted CNC machining

2021 ◽  
Vol 40 (4) ◽  
pp. 1-16
Author(s):  
Michael Bartoň ◽  
Michal Bizzarri ◽  
Florian Rist ◽  
Oleksii Sliusarenko ◽  
Helmut Pottmann
Keyword(s):  
Motion Planning ◽  
Cnc Machining ◽  
Tool Motion

Geometric Criteria for Gouge-Free Three-Axis Milling of Sculptured Surfaces

1998 ◽  
Author(s):  
Helmut Pottmann ◽  
Johannes Wallner ◽  
Georg Glaeser ◽  
Bahram Ravani
Keyword(s):  
Motion Planning ◽  
Sculptured Surfaces ◽  
Global Shape ◽  
Be Star ◽  
Offset Surfaces ◽  
Tool Motion ◽  
Curvature Information ◽  
Bivariate Functions

Abstract The paper presents a geometric investigation of collision-free 3-axis milling of surfaces. We consider surfaces with a global shape condition: they shall be interpretable as graphs of bivariate functions or shall be star-shaped with respect to a point. If those surfaces satisfy a local millability criterion involving curvature information, it is proved that this implies globally gouge-free milling. The proofs are based on general offset surfaces. The results can be applied to tool-motion planning and the computation of optimal cutter shapes.

On the Generation of Coordinated Motion of Five-Axis CNC/CMM Machines

1992 ◽  
Vol 114 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Jui-Jen Chou ◽  
D. C. H. Yang
Keyword(s):  
Machine Tool ◽  
Cnc Machining ◽  
Cad Model ◽  
Coordinated Motion ◽  
Geometrical Properties ◽  
Time Dependent Domain ◽  
Arbitrary Space ◽  
Tool Motion ◽  
And Control ◽  
Five Axis

This paper presents an analytical study on the command generation for five-axis CNC machining or CMM measurement. In the integration of CAD and CAM, it is necessary to relate machine tool kinematics and control in a CAM process to the geometrical data in a CAD model. The data stored in a CAD model is usually static in nature and represented by unitless parameters. Yet, in machine tool motion and control, the data should be transformed into a time dependent domain. In this paper, a general theory on the conversion from desired paths to motion trajectory is analytically derived. The geometrical properties of a desired path, including position, tangent, and curvature are related to the kinematics of coordinated motion including feedrate, acceleration and jerk. As a result, the motion commands used as control references to track arbitrary space curves for five-axis computer-controlled machines can be generated in a rather straight-forward as well as systematic way.

Command Generation for Three-Axis CNC Machining

1991 ◽  
Vol 113 (3) ◽  
pp. 305-310 ◽  
Author(s):  
Jui-Jen Chou ◽  
D. C. H. Yang
Keyword(s):  
Machine Tool ◽  
Driving Force ◽  
Cnc Machining ◽  
Quality Analysis ◽  
Cad Model ◽  
Geometrical Properties ◽  
Time Dependent Domain ◽  
Command Generation ◽  
Tool Motion ◽  
And Control

This paper investigates the command generation for three-axis CNC machining. In the integration of CAD and CAM, it is necessary to relate machine tool dynamics and control in a CAM process to the geometrical data in a CAD model. The data stored in a CAD model is usually static in nature and represented by unitless parameters. Yet, in machine tool motion and control, the data should be transformed into a time dependent domain. In this paper, the geometrical properties of a cutter path, including position, tangent, curvature and torsion are analytically related to the motion dynamics of a machine tool including feedrate, acceleration, jerk and driving force. The information about feedrate, acceleration and driving force is needed for command generation. Jerk analysis can be used for cutting quality analysis.

The Modeling and Simulation of Digital Lathe Based on OpenGL

2014 ◽  
Vol 988 ◽  
pp. 659-662
Author(s):  
Yan Rui Zhang ◽  
Hai Xia Bi ◽  
Tie Cheng Wang ◽  
Shi Jie Li
Keyword(s):  
Machine Tool ◽  
Cnc Machining ◽  
Constructive Solid Geometry ◽  
Motion Simulation ◽  
Machining Simulation ◽  
Solid Geometry ◽  
Cnc Lathe ◽  
Digital Production ◽  
Tool Motion ◽  
Geometry Method

In the article, a digital machining environment of CNC lathe is established. On the basis of the idea of Constructive Solid Geometry method, the system consists of the blank display model, the tool and fixture model, CNC machining program editing model and machining simulation model. By making use of VC++ and OpenGL graphics technology the program is done for machine tool motion simulation and cutting simulation. It is an effective accessory tool in the application of CNC lathe to digital production.

3D Shape-Generating Processes and the G-Buffer Modeling for CNC Machining

1999 ◽  
Author(s):  
Chuang-Jang Chiou ◽  
Yuan-Shin Lee
Keyword(s):  
Error Analysis ◽  
Tool Path ◽  
Tool Path Generation ◽  
Cnc Machining ◽  
Path Generation ◽  
Machined Surface ◽  
New Approach ◽  
Surface Error ◽  
3D Shape ◽  
Tool Motion

Abstract In this paper, a new approach is presented to construct the G-buffer models by finding 3D shape-generating profiles of milling cutters. The G-buffer method is commonly used in 3-axis machining verification. In this paper, the analytic 3D shape-generating profiles are formulated to construct the swept envelope in 5-axis tool motion. The 5-axis machining G-buffer model is updated by the constructed swept envelope. The techniques presented in this paper can be used for 5-axis tool path generation and the machined surface error analysis.

The Study of Five-Axis NC Simulation by Stencil Buffer Algorithm

2006 ◽  
Vol 532-533 ◽  
pp. 869-872
Author(s):  
Yu Han Wang ◽  
Li Qiang Zhang ◽  
Ming Chen
Keyword(s):  
Processing Time ◽  
Tool Path ◽  
Cnc Machining ◽  
Machining Error ◽  
Machining Errors ◽  
Nc Simulation ◽  
Tool Interference ◽  
Tool Motion ◽  
Five Axis ◽  
Part Model

Five-axis CNC machining tools can improve the efficiency and accuracy obviously in machining industries, but the machining errors and tool interference are likely to happen due to the complexity of tool motion. So the verification of the tool path is very important and necessary before machining the part. A new algorithm for 5-axis machining verification based on the stencil buffer has been presented in the paper. Based on the tool path and the cutter geometry, the cutter’s swept profile is determined. The swept envelope is subtracted from the sliced blank part model by using the stencil buffer. Considering the complexity of five-axis tool motions, examples are necessary to verify the reliability of the proposed algorithms. The experiment results indicate that the method is superior to the traditional methods on the processing time and the image quality. This proposed method can further be applied to machining error analysis, collisions interference.

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