Tools
Sorted by:
Try your query at:
 |
 |
 |
 |
 |
 |
Results 11 - 20
of
139
On-Line Detection of the Breakage of Small Diameter Drills Using Current Signature Wavelet Transform
, 1999
"... This paper presents on-line tool breakage detection of small diameter drills by monitoring the AC servo motor current. The continuous wavelet transform was used to decompose the spindle AC servo motor current signal and the discrete wavelet transform was used to decompose the feed AC servo motor cur ..."
Abstract
-
Cited by 3 (0 self)
- Add to MetaCart
This paper presents on-line tool breakage detection of small diameter drills by monitoring the AC servo motor current. The continuous wavelet transform was used to decompose the spindle AC servo motor current signal and the discrete wavelet transform was used to decompose the feed AC servo motor
Novelty Detection in Time Series Data using Ideas from Immunology
- In Proceedings of The International Conference on Intelligent Systems
, 1995
"... Detecting anomalies in time series data is a problem of great practical interest in many manufacturing and signal processing applications. This paper presents a novelty detection algorithm inspired by the negative-selection mechanism of the immune system, which discriminates between self and other. ..."
Abstract
-
Cited by 133 (20 self)
- Add to MetaCart
. Here self is defined to be normal data patterns and non-self is any deviation exceeding an allowable variation. An example application, simulated cutting dynamics in a milling operation, is presented, and the performance of the algorithm in detecting the tool breakage is reported. 1 INTRODUCTION
GaAs Wafer Breakage Reduction
"... We present results of many years of work for breakage reduction of GaAs wafers at Skyworks. Incoming wafers are seen to be strong. Micro-scratches and micro-cracks added during processing reduce the strength of processed wafers. However, wafer strength reduction is not linear and breakage rate does ..."
Abstract
- Add to MetaCart
not increase simply by adding fabrication steps. Instead, wafer breakage and strength reduction is a function of process and tool type. Wafers may break at a tool or weakened wafers may break later. Once attention is given to the main culprits and issues resolved, breakage goes down. A few specific examples
Real-Time Tool Condition Monitoring Using Wavelet Transforms and Fuzzy Techniques
, 2000
"... In this paper, wavelet transforms and fuzzy techniques are used to monitor tool breakage and wear conditions in real time according to the measured spindle and feed motor currents, respectively. First, the continuous and discrete wavelet transforms are used to decompose the spindle and feed ac servo ..."
Abstract
-
Cited by 8 (1 self)
- Add to MetaCart
In this paper, wavelet transforms and fuzzy techniques are used to monitor tool breakage and wear conditions in real time according to the measured spindle and feed motor currents, respectively. First, the continuous and discrete wavelet transforms are used to decompose the spindle and feed ac
SIMULATION AND ANALYSIS OF CHIP BREAKAGE IN TURNING PROCESSES
"... In order to improve metal cutting processes, i.e. lower part cost, it is necessary to model metal cutting processes at a system level (Ehmann et. a., 1997). A necessary requirement of such is the ability to model interactions at the tool-chip interface and thus, predict cutter performance. Many appr ..."
Abstract
- Add to MetaCart
In order to improve metal cutting processes, i.e. lower part cost, it is necessary to model metal cutting processes at a system level (Ehmann et. a., 1997). A necessary requirement of such is the ability to model interactions at the tool-chip interface and thus, predict cutter performance. Many
Detection of Tool Flute Breakage in End Milling Using Feed-Motor Current Signatures
, 2001
"... In this paper, an effective algorithm based on improved time-domain averaging is proposed to detect tool flute breakage during end milling using feed-motor current signatures. The algorithm proposed is demonstrated to be effective in detecting tool flute breakage in real time through a series of mil ..."
Abstract
-
Cited by 4 (2 self)
- Add to MetaCart
In this paper, an effective algorithm based on improved time-domain averaging is proposed to detect tool flute breakage during end milling using feed-motor current signatures. The algorithm proposed is demonstrated to be effective in detecting tool flute breakage in real time through a series
Abstract Artificial Immune Systems in Industrial Applications
"... Artificial Immune System (AIS) is a new intelligent problem-solving technique that being used in some industrial applications. This paper presents such an immunity-based algorithm for tool breakage detection. The method is inspired by the negative-selection mechanism of the immune system, which is a ..."
Abstract
- Add to MetaCart
Artificial Immune System (AIS) is a new intelligent problem-solving technique that being used in some industrial applications. This paper presents such an immunity-based algorithm for tool breakage detection. The method is inspired by the negative-selection mechanism of the immune system, which
AN ASSESSMENT OF MECHANISTIC BREAKAGE AND COALESCENCE KERNELS IN POLY-DISPERSED MULTIPHASE FLOW
"... ABSTRACT Gas-liquid bubbly flows (i.e. swarm of discrete gas bubbles suspended in continuous liquid) have a wide range of applications; including mining, pharmaceutical and petroleum industries. Many researches have been carried out to develop an effective design tool for these industries and enhan ..."
Abstract
- Add to MetaCart
ABSTRACT Gas-liquid bubbly flows (i.e. swarm of discrete gas bubbles suspended in continuous liquid) have a wide range of applications; including mining, pharmaceutical and petroleum industries. Many researches have been carried out to develop an effective design tool for these industries
ICCM2014 28-30 Computational methods on tool forces in friction stir welding
"... Abstract The commercial applications of friction stir welding (FSW) to hard materials are limited by tool breakages. But the tool forces and the relations to tool geometries remain unknown. So, here we established a model on calculation of tool forces in FSW and examined how the tool design affects ..."
Abstract
- Add to MetaCart
Abstract The commercial applications of friction stir welding (FSW) to hard materials are limited by tool breakages. But the tool forces and the relations to tool geometries remain unknown. So, here we established a model on calculation of tool forces in FSW and examined how the tool design
EXPERIMENTAL INVESTIGATION OF THE TOOL WEAR AND TOOL LIFE IN MICRO HARD MILLING
"... Abstract The objective of this project is to experimentally investigate the influence of Minimum Quantity Lubrication (MQL) on tool wear and tool life in micro hardmilling. The experiments were performed on stainless steel using uncoated WC micro-mill with the nominal diameter of 508 microns. The t ..."
Abstract
- Add to MetaCart
conditions, the tool only experienced two cycles before tool breakage. The surface roughness at the bottom of the slots improved significantly with the application of MQL for all levels of the tool wear. The surface roughness did not increase drastically as the tool wear increased. It reached a plateau after
Results 11 - 20
of
139
