Virtual System of NC Milling Based on 3ds Max and Open GL Modeling

2010 ◽  
Vol 43 ◽  
pp. 325-328
Author(s):  
Zu Jun Ding ◽  
Jun Fang Ni ◽  
Li Li Lu ◽  
Xiao Wei Xu
Keyword(s):  
Dynamic Simulation ◽  
Processing Technique ◽  
Virtual Manufacturing ◽  
Machining Processes ◽  
Nc Milling ◽  
Virtual System ◽  
Cutting Processes ◽  
Open Gl

This virtual system, which is based on virtual manufacturing and NC processing technique for NC milling, is developed by Visual C++6.0. The system can edit, check and debug the NC programs to realize the 3D dynamic simulation of machining processes and collision-checking during cutting processes.

Späne- und Stauberfassung bei der CFK-Zerspanung*/Extraction of chips and dust in machining operations of CFRP. Investigation on CFRP dry machining in industrial applications

2018 ◽  
Vol 108 (06) ◽  
pp. 473-478
Author(s):  
A. Gebhardt ◽  
M. Schneider
Keyword(s):  
Industrial Applications ◽  
Machining Process ◽  
Dry Machining ◽  
Machining Processes ◽  
Dry Cutting ◽  
Clamping System ◽  
Cutting Processes ◽  
Machining Operations

Bauteile aus CFK (kohlenstofffaserverstärkte Kunststoffe) werden meist spanend endbearbeitet. Diese Bearbeitung kann unter Überflutung durch KSS (Kühlschmierstoffe) oder trocken stattfinden. Die hier vorgestellte Studie zeigt für die Trockenzerspanung, wie die notwendige Erfassung von Stäuben und Spänen stattfindet, welche Technologien eingesetzt werden und wie eine Maschinen- und Bauteilreinigung aussieht.   A machining process is mostly used as a last step in the production of workpieces made of CFRP. In this machining process lubricants may be used or dry cutting processes are applicated. The here presented study shows for dry machining processes, which technologies are used for the dust and chip extraction. Furthermore, the techniques for the cleaning of the machine, the clamping system and workpiece are presented.

Surface Texture and Machining Conditions. Part 1: Model Building Logic in View of Process Control

1983 ◽  
Vol 105 (4) ◽  
pp. 259-263 ◽  
Author(s):  
A. Villa ◽  
S. Rossetto ◽  
R. Levi
Keyword(s):  
Process Control ◽  
Surface Texture ◽  
Model Building ◽  
Surface Profile ◽  
Cutting Parameters ◽  
Tool Geometry ◽  
Machining Processes ◽  
Tool Marks ◽  
Machining Conditions ◽  
Cutting Processes

Surface texture generation in machining processes is examined in view of establishing a model building procedure capable of linking surface finish parameters to machining conditions. In the first part of the paper, with reference to cutting processes with defined tool geometry, a model capable of describing a surface profile as an ordered sequence of tool marks is developed. The use of such a model for process control is also discussed. In the second part, the identification procedure of a model describing profile generation in face milling versus cutting parameters is presented.

The Effect of the Laser Beam Wavelength and Pulse Width on Micro Grooving: Comparison of Nanosecond and Femtosecond Laser

2012 ◽  
Author(s):  
Shinri Nonaka ◽  
Tastuhiro Mori ◽  
Yasuyuki Takata ◽  
Masamichi Kohno
Keyword(s):  
Focused Ion Beam ◽  
Ion Beam ◽  
Processing Technique ◽  
Machining Processes ◽  
Setup Costs ◽  
Micro Grooving ◽  
Micro Total Analysis Systems ◽  
Processing Accuracy ◽  
Total Analysis ◽  
Micro Reactors

Processing technique of micro grooves and channels is very important to study the phenomenon of fluids in micro scale. Micro grooves and microchannels play an important role in various devices, such as μ-TAS (Micro-Total Analysis Systems) and micro reactors. Laser processing is currently widely used for drilling and grooving of various materials including metals, polymers, glasses and composite materials, since laser machining can avoid the problems that conventional machining methods have. For example wear of a working tool, lowering of processing accuracy, and wear debris becoming contaminants are some of the problems of the conventional method. Additionally, compared to other non-contact machining processes such as electron beam machining (EBM) and focused ion beam (FIB), machining a vacuum is not required. Therefore, applicability is wider and setup costs can be more economical.

Virtual Manufacturing of Straight Bevel Gear Based on Pro/E Wildfire

2014 ◽  
Vol 1044-1045 ◽  
pp. 902-905
Author(s):  
Ji Shun Lin
Keyword(s):  
Tool Path ◽  
Control Program ◽  
Virtual Manufacturing ◽  
Numerical Control ◽  
Milling Machine ◽  
Post Processing ◽  
Milling Cutter ◽  
Straight Bevel Gear ◽  
Nc Milling ◽  
Finishing Machining

Making use of function of NC programme provided by Pro/NC, aiming at general NC milling machine and using general milling cutter, this thesis attempts to establish the tool path of straight bevel gear’s finishing machining and then put forward the idea of processing piece by piece. In this way, “over cutting” and “short cutting” can be avoided and the precision of process can be improved. Finally, the accuracy of product designing and manufacture can be tested by post-processing of numerical control program of straight bevel gear’s finishing processing with the VERICUT’s simulating.

A Novel Generalized Approach for Real-Time Tool Condition Monitoring

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Mahmoud Hassan ◽  
Ahmad Sadek ◽  
M. H. Attia ◽  
Vincent Thomson
Keyword(s):  
Statistical Analysis ◽  
Condition Monitoring ◽  
High Speed ◽  
Threshold Level ◽  
Processing Technique ◽  
Spindle Motor ◽  
Tool Condition Monitoring ◽  
Important Principle ◽  
Tool Condition ◽  
Cutting Processes

In high-speed cutting processes, late replacement of defective tools may lead to machine breakdowns and badly affect the product quality, which subsequently lead to scrap parts and high process costs. Accurate tool condition detection is essential to achieve high level of competitiveness via increasing process productivity and standardizing the quality of the produced parts. Therefore, tool condition monitoring (TCM) systems have been widely emphasized as an important principle to achieve these industrial demands. Several studies for TCM were carried out to capture tool failure using complex conventional and artificial intelligence (AI) techniques. However, these studies suffer from the absence of standardization and generalization. Hence, this paper presents a robust and reliable processing technique for the cutting process signals to extract generalized features in time and frequency domains. The proposed technique masks the effects of the cutting conditions on the extracted features and accentuates the tool condition effect. Characterization and statistical analysis of the processed features were performed to examine their sensitivity to the tool condition. The results revealed the processing technique capability to separate the features extracted from the spindle motor current signals into two mutually exclusive clusters according to their tool condition. The statistical analysis results were employed to optimize the tool condition detection approach using linear discrimination analysis (LDA) model. The results indicate the capability of the processing technique to minimize the system learning effort and to detect tool wear above the threshold level with accuracy above 90%.

High-Speed Photogrammetry Application for Percussive Rotary Cutting Tests of Deep-Ocean Cobalt-Rich Crusts

2014 ◽  
Vol 568-570 ◽  
pp. 1753-1756
Author(s):  
Hao Zheng ◽  
Shao Jun Liu ◽  
Hai Ren Gan ◽  
Ning Yang
Keyword(s):  
Torsional Vibration ◽  
Vibration Amplitude ◽  
High Speed ◽  
Deep Ocean ◽  
Processing Technique ◽  
High Precision Measurement ◽  
Wide Range ◽  
Rotary Cutting ◽  
Cutting Processes ◽  
The Impact

The cutting processes of drill rod under different surge pressures, rotate pressures and propulsion forces were recorded by the high-speed camera in the hydraulic percussive rotary cutting tests of deep-ocean cobalt-rich crusts. Meanwhile, the curves of impact vibration, torsional vibration and frame vibration during the cutting processes were plotted by digital picture processing technique. The impact frequency, torsional vibration frequency, torsional vibration amplitude, vibration amplitude of drill rod and the frame were calculated. The photogrammetry results are generally in agreement with the traditional test results. High-speed photogrammetry is a non-contact, wide range application, and high precision measurement, and the cutting process can be described visually and adequately.

Identification of Machining Chatter Marks on Surfaces of Automotive Valve Seats

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Hagay Bamberger ◽  
Saikrishnan Ramachandran ◽  
En Hong ◽  
Reuven Katz
Keyword(s):  
Processing Technique ◽  
Image Processing Technique ◽  
Inspection System ◽  
Circle Fitting ◽  
Machining Processes ◽  
Robust Identification ◽  
Machining Chatter ◽  
Occurrence Matrix ◽  
First Time ◽  
Chatter Marks

In this paper, we propose a method for inspecting machining chatter marks on automotive valve seats using image processing technique. Chatter or self-excited tool-workpiece relative vibration is unacceptable in the machining processes of valve seats, because it causes poor surface finish and can create internal leaks in the engine. Robust identification of chatter marks on machined surfaces is one of the main challenges in the realization of an automatic in-line inspection system. We suggest several methods for calculating the chatter marks severity, using circle fitting and gray level co-occurrence matrix technique, which was for the first time implemented on circular images.

scholarly journals Effect of Boric Acid Mixture as Solid Lubricant towards Machining Processes

2013 ◽  
Vol 651 ◽  
pp. 372-377
Author(s):  
S. Sulaiman ◽  
M.K.A.M. Ariffin ◽  
T.S. Hong ◽  
N.A. Mustafa
Keyword(s):  
Boric Acid ◽  
Manufacturing Industry ◽  
Solid Lubricant ◽  
Metal Removal ◽  
Cutting Fluid ◽  
Acid Mixture ◽  
Machining Processes ◽  
Feasible Alternative ◽  
And Performance ◽  
Cutting Processes

Milling is widely used metal removal process in manufacturing industry that involves generation of high cutting forces and temperature. Lubricants become important to reduce the cutting force and temperature for better machining processes and performances. Conventional cutting fluid has some limitations. The applications of conventional cutting fluid create some techno-environmental problems like environmental pollution, biological problems to operators and water pollution. Application of solid lubricant in milling has proved to be a feasible alternative to the conventional cutting fluids. The present work investigates the effect of boric acid as solid lubricant towards machining performances such as tool wear and surface roughness. The results indicate that boric acid can improve the cutting processes and performance compared to conventional cutting fluid.

A Case Retrieving System for Machining Processes of Axisymmetric Parts Based on Geometric Indexing and Process Hierarchical Structure

1998 ◽  
Author(s):  
Hsin-chi Chang ◽  
Wen F. Lu ◽  
Xiaoqing Frank Liu
Keyword(s):  
Hierarchical Structure ◽  
Process Planning ◽  
Global Market ◽  
Machining Process ◽  
Manufacturing Processes ◽  
Machining Processes ◽  
Similarity Metric ◽  
The Core ◽  
Feature Based ◽  
Cutting Processes

Abstract To develop a new machining process plan in the competitive global market, one effective way is to retrieve a relevant case similar to the new desired case and then adapt it to meet the new situations. This paper proposes a retrieving system for process planning cases from two aspects — the representation and manufacturing processes of a part. The core of the retrieving system contains 1) the feature-based representation of a part, 2) indexing of a part based on two-dimensional peripheral indexing and feature indexing, 3) a hierarchical structure of cutting processes from part cutting history, 4) a similarity metric. The similarity metric is used to measure the similarity between the new desired part and one old case based on the indexes of the parts. The application domain here is the process planning for axisymmetric parts. The proposed retrieving system is implemented in a Sun workstation using ACIS 3D-Toolkit and C++.

Computer Aided Process Planning for Machining the Gears

2011 ◽  
Vol 264-265 ◽  
pp. 1551-1556
Author(s):  
Deepak Byotra ◽  
Rajesh Kumar Bhushan
Keyword(s):  
Process Planning ◽  
Hybrid Approach ◽  
Machining Processes ◽  
Machining Time ◽  
Computer Aided Process Planning ◽  
Computer Aided ◽  
Set Up ◽  
Cutting Processes ◽  
Machining Operations ◽  
Grinding Operations

Bulk of power transmitting metal gears of machinery is produced by machining processes from cast, forged or hot rolled blanks. It includes a number of versatile machining operations that use a milling cutter, a multi tooth tool to produce a variety of configurations. The aim of the computer aided process planning (CAPP) is to develop a programme for milling cutting processes. This paper reveals the hybrid approach to computer aided process planning for milling and grinding operations on gear blank, so that the plan can be generated taking into account the availability of machines and the material. The developed computer aided process plan has reduced the set up time and machining time by 40.90 and 30.15 % respectively.

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