Screw Inspection Optimized System Design and Implementation

2011 ◽  
Vol 217-218 ◽  
pp. 196-201
Author(s):  
Yang Kuan Liu ◽  
Tao Cai ◽  
Shi Guang Ju
Keyword(s):  
Machine Tools ◽  
Manufacturing Industry ◽  
Measurement Data ◽  
Measuring Instruments ◽  
Precision Measuring ◽  
Measuring Devices ◽  
Equipment Manufacturing ◽  
Systemic Error ◽  
Precision Machine Tools

In machinery and equipment manufacturing industry, screw is an important part. Not only as a precision screw precision transmission components, but also commonly used for precision measuring devices. Precision screw itself directly affects the accuracy of precision machine tools and precision measuring instruments for transmission, positioning precision and accuracy, and thus the processing and inspection of precision screw is higher demanded. Traditionally, screw inspection is usually done by manual and the quality of inspection is not high, with very low inspection efficiency. To solve these problems, optimized system for screw inspection was designed and implemented. Using the Quartile range method in Statistics to remove outliers, and with the help of kalman filter, systemic error is got rid of. With these methods, raw measurement data is analyzed and processed, and inspection report is generated. The efficiency of screw inspection is highly improved.

USING A DATA LOGGER WHEN TESTING AND CALIBRATING MEASURING INSTRUMENTS

2017 ◽  
pp. 43-47
Author(s):  
D. A. Bakin ◽  
S. .. Srinivasa Pai ◽  
D. S. Leontiev
Keyword(s):  
Process Control ◽  
Human Factor ◽  
High Accuracy ◽  
Measuring Instruments ◽  
Data Logger ◽  
Calibration Process ◽  
Measuring Devices ◽  
Negative Role

Currently, metrology is an important element of any industry. Under these conditions, the accuracy of testing and calibration of measuring devices becomes critical. Due to the high accuracy of modern measuring instruments, human factor can play a significant negative role in the calibration process. Therefore, the use of modern tools, such as a data logger, can significantly improve the quality of the process, reducing staff functions to process control.

Generation of Atmospheric Constants over Some Locations in West Africa: A Theoretical Aid for Measuring Instruments Design

2016 ◽  
Vol 27 ◽  
pp. 119-146 ◽  
Author(s):  
Moses E. Emetere ◽  
Marvel L. Akinyemi
Keyword(s):  
West Africa ◽  
Dispersion Model ◽  
Statistical Investigation ◽  
West African ◽  
Measuring Instruments ◽  
Atmospheric Conditions ◽  
The West ◽  
Retention Capacity ◽  
Measuring Devices ◽  
Systemic Error

The performance of AERONET or AMMA in West Africa over the past two decades had been successful but not without its challenges. These challenges had resulted in the loss of large volume of useful data. The frequent failures of ground measuring devices over West Africa have been linked to the manufacturer and christened 'manufacturer-error'. In this paper, it was proposed that the frequent failure of ground measuring devices is due to systemic-error. To address the systemic-error, we propose that the configuration of the constants-embedded in the compact flash of the measuring devices is not compatible with the atmospheric conditions of the West African climate. A statistical investigation was carried out on both the ground and satellite dataset to determine the aerosols retention capacity within the West African space. A dispersion model was developed to incorporate salient assumptions and parameters like the Unified number. Fourteen and thirteen years dataset were obtained from Multi-angle Imaging SpectroRadiometer (MISR) and AERONET respectively. Five locations were considered in this study; Ilorin-Nigeria, Ouagadougou-Burkina Faso, Lome-Togo, Conakry-Guinea and Niamey-Niger which are positioned on latitude 8.5 oN, 12.37 oN, 6.17 oN, 9.55 oN, 13.5 oN and longitude 4.53 oE, 1.53 oW, 1.35 oE, 13.67 oW, 2.12 oE respectively. It was observed that the same aerosols retention occurred in West Africa region between 2003 and 2005. Also, it was observed that the high aerosols retention over the locations portray danger to the life form, such as unbearable thermal comfort, increased heat flux, partial famine e.t.c. Hence, the proper documentation and execution of the correct atmospheric constants over locations of West Africa is a novel concept.

Study on Numerical Control System of Lampcover Spinning Machine

2013 ◽  
Vol 336-338 ◽  
pp. 1303-1308
Author(s):  
Jian Hong Zhou ◽  
Peng Shen ◽  
Zheng Weng
Keyword(s):  
Control System ◽  
Machine Tools ◽  
Manufacturing Industry ◽  
Numerical Control ◽  
Machining Process ◽  
Numerical Control System ◽  
Light Industry ◽  
Equipment Manufacturing ◽  
Nc Machine ◽  
Nc Machine Tools

Chinese spinning technology has developed for more than 40 years. Especially in recent years, various kinds of spinning equipment have been developed and contributed a lot to Chinese equipment manufacturing industry, but it is blank in the light industry and civil industry. Due to the high cost and programming complexity of NC machine tools, we have no dedicated spinning machine and mostly rely on simple manual in the lampcover production. As to the above problems, we developed the lampcover NC spinning machines that can generate the track automatically and complete automatic control in the machining process.

Dynamics of the processes in metal machining

1998 ◽  
Vol 2 ◽  
pp. 115-122
Author(s):  
Donatas Švitra ◽  
Jolanta Janutėnienė
Keyword(s):  
High Frequency ◽  
Machine Tools ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Low Frequency ◽  
Metal Cutting Machine ◽  
Cutting Machine ◽  
Metal Machining

In the practice of processing of metals by cutting it is necessary to overcome the vibration of the cutting tool, the processed detail and units of the machine tool. These vibrations in many cases are an obstacle to increase the productivity and quality of treatment of details on metal-cutting machine tools. Vibration at cutting of metals is a very diverse phenomenon due to both it’s nature and the form of oscillatory motion. The most general classification of vibrations at cutting is a division them into forced vibration and autovibrations. The most difficult to remove and poorly investigated are the autovibrations, i.e. vibrations arising at the absence of external periodic forces. The autovibrations, stipulated by the process of cutting on metalcutting machine are of two types: the low-frequency autovibrations and high-frequency autovibrations. When the low-frequency autovibration there appear, the cutting process ought to be terminated and the cause of the vibrations eliminated. Otherwise, there is a danger of a break of both machine and tool. In the case of high-frequency vibration the machine operates apparently quiently, but the processed surface feature small-sized roughness. The frequency of autovibrations can reach 5000 Hz and more.

ANAAC AND HIGHER EDUCATION IN, INDIA

2018 ◽  
Vol 6 (26) ◽  
Author(s):  
Seema Singh
Keyword(s):  
Higher Education ◽  
Quality Assurance ◽  
Manufacturing Industry ◽  
Practical Experience ◽  
Individual Autonomy ◽  
Economic Activities ◽  
Quality Of Higher Education ◽  
National Quality ◽  
Education In India

Quality, as we know so far, was originally developed in the manufacturing industry. In the area of higher education, the adoption of quality control has been superficial and diluted by the exercise of academic . Further, the prevailing culture of universities is often based on individual autonomy, which is zealously guarded. Thus, it is usually difficult to apply the features of quality to higher education considering the fact that quality requires. However, the quality of higher education is very important for its stakeholders. Notably, providers (funding bodies and the community at large), students, staff and employers of graduates are. The most commonly grouped dimensions of quality are product, software and service. In the changing context marked by expansion of higher education and globalization of economic activities, education has become a national concern with an international dimension. To cope with this changing context, countries have been pressurized to ensure and assure quality of higher education at a nationally comparable and internationally acceptable standard. Consequently, many countries initiated “national quality assurance mechanisms” and many more are in the process of evolving a suitable strategy. Most of the quality assurance bodies were established in the nineties and after a few years of practical experience, they are rethinking many issues of quality assurance. At this juncture where countries look for experiences and practices elsewhere, the experience of India has many valuable lessons and this report is an attempt to share those developments..

scholarly journals Comparative Study of Burnout in Professional Caregivers of Institutionalized Elderly with Dementia and other Diseases

2011 ◽  
Vol 1 (2) ◽  
pp. 61-70
Author(s):  
Inmaculada Méndez ◽  
Esther Secanilla ◽  
Juan P. Martínez ◽  
Josefa Navarro
Keyword(s):  
Quality Of Life ◽  
Ad Hoc ◽  
Maslach Burnout Inventory ◽  
Well Being ◽  
Measuring Instruments ◽  
Global Approach ◽  
People With Dementia ◽  
Quality Of Patient Care ◽  
Psychoeducational Programs

In a global approach about the need of paying attention to staff working with and for older people with dementia and other diseases in residential care, it is necessary to investigate their emotional well-being to provide strategies to improve their quality of life and therefore their quality of patient care. Professional caregivers of people with dementia and other diseases have specific psycho-sociological problems. They are more prone to stress which can sometimes lead to the “burnout” due to specific functions in the workplace. To define the sample was decided to compare two residential centers of two regions, Murcia and Barcelona. We proceeded to the administration of the following measuring instruments: the scale Maslach Burnout Inventory (MBI) and an ad hoc survey conducted for professional caregivers. Finally, the results offer the possibility of carrying out programs to prevent emotional exhaustion in professional carers, as well as the possibility of designing psychoeducational programs for staff care and even future proactive and reactive interventions.

Evaluation of the quality of measuring devices

1973 ◽  
Vol 16 (6) ◽  
pp. 802-803
Author(s):  
Z. M. Bluvband ◽  
G. A. Shevtsov
Keyword(s):  
Measuring Devices

Reflections on FDA and WHO recommendations concerning clinical trials

1989 ◽  
Vol 4 (2) ◽  
pp. 117-122 ◽  
Author(s):  
J.-F. Dreyfus ◽  
D. Cremniter ◽  
J.D. Guelfi
Keyword(s):  
Clinical Trials ◽  
Drug Users ◽  
Objective Evaluation ◽  
World Health ◽  
Measuring Instruments ◽  
New Techniques ◽  
The Usa ◽  
The One ◽  
Health Organization

SummaryWe are still confronted by numerous different nosographic models and problems concerning the objective evaluation of patients progress during treatment. It is interesting to consider the consequences of this situation in psychiatry which still involves a relative diversity of practical methods used in clinical trials. The recommendations of the USA Food and Drug Administration, on the one hand, constitute a highly structured and precise reference. The World Health Organization, on the other hand, promulgates general recommendations resulting from a compromise designed to satisfy the greatest number of clinicians.Despite the apparently diverse principles and the different practical methods they propose, both those sets of recommendations have been useful in inspiring clinicians to reflect upon these different methodological approaches. The qualities of the inclusion criteria used in the study of patients and the sensitivity of the different measuring instruments have allowed psychotropic drug users as well as producers to recognize the need for a certain rigour in clinical trials.The FDA and WHO guidelines have certainly improved the quality of clinical trials in psychopharmacology. However, they also represent a source of resistance to innovation.A series of consensus meetings to first reconcile US and European points of view and later to include new techniques in the recognized sets of methods would therefore be helpful.

Sign in / Sign up

Export Citation Format

Share Document