Wyniki wyszukiwania - BazTech

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Development of database and searching system for tool grinding

Chen J. Y., Lin W. Y., Lee B. Y., Chen C. H.

Journal of Achievements in Materials and Manufacturing Engineering

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2008

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Vol. 26, nr 2

159-162

EN

Purpose: For achieving the goal of saving time on the tool grinding and design, an efficient method of developing the data management and searching system for the standard cutting tools is proposed in this study. Design/methodology/approach: At first the tool grinding software with open architecture was employed to design and plan grinding processes for seven types of tools. According to the characteristics of tools (e.g. types, diameter, radius and so on), 4802 tool data were established in the relational database. Then, the SQL syntax was utilized to write the searching algorithms, and the human machine interfaces of the searching system for the tool database were developed by C++ Builder. Findings: For grinding a square end mill with two-flute, a half of time on the tool design and the change of production line for grinding other types of tools can be saved by means of our system. More specifically, the efficiency in terms of the approach and retract time was improved up to 40%, and an improvement of approximately 10.6% in the overall machining time can be achieved. Research limitations/implications: In fact, the used tool database in this study only includes some specific tools such as the square end mill. The step drill, taper tools, and special tools can also be taken into account in the database for future research. Practical implications: The most commercial tool grinding software is the modular-based design and use tool shapes to construct the CAM interface. Some limitations on the tool design are undesirable for customers. On the contrary, employing not only the grinding processes to construct the grinding path of tools but the searching system combined with the grinding software, it gives more flexible for one to design new tools. Originality/value: A novel tool database and searching system is presented for tool grinding. Using this system can save time and provide more convenience on designing tools and grinding. In other words, the company productivity can be improved.

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Design and implementation of cutting tools search system

Chen J. Y., Lu H. S., Lee B. Y., Chen C. H.

Journal of Achievements in Materials and Manufacturing Engineering

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2008

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Vol. 30, nr 1

95-102

EN

Purpose: The main purpose of this paper is to analyse the grinding processes and develop a search system of database for cutting tools. Design/methodology/approach: A tool grinding software with open architecture was used to analyse the grinding processes of square end mills, tapered square end mills, ball nose end mills, tapered ball nose end mills, radius end mills, tapered radius end mills, straight flute reamers, helical flute reamers, flat drills, twist drills, and step drills. According to the characteristics of these tools, 20270 data were established in the relational database. The SQL syntax was then utilized for writing the search algorithm, and the C++ Builder was employed for designing human machine interfaces of the search system of the tool database. Findings: A half of time on the tool design and the change of production line for grinding other types of tools can be saved by means of the proposed system. More specifically, the efficiency in terms of the overall machining time was improved up to 10.58%, 9.36%, 4.64%, and 7.52% for grinding the radius end mill, tapered radius end mill, twist drill, and step drill, respectively. Research limitations/implications: Special tools have diversification. They can not be taken into consideration in the database system owing to the tools have specific profiles. Therefore, it is difficult to encode by formal rules. Practical implications: The most commercial tool grinding software is the modular-based design and uses tool shapes to construct the CAM interface. However, it is very difficult for users to design new cutting tools. Utilizing the grinding processes to construct the grinding path of tools, and the search system of the database provides more flexible options to develop new cutting tools. Originality/value: The database and search system of cutting tools were presented in this paper. We can save time for production line change, tool design, and tool grinding by employing this kind of system. It also gives more convenience. That is, company's productivity and benefit can be improved.

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Metody wyszukiwania i rangowania dokumentów hipertekstowych w kontekście potrzeb procesów decyzyjnych

Zdonek D.

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2004

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z. 20 cz. 1

267-276

PL

Artykuł prezentuje wybrane metody w zakresie wyszukiwania i wartościowania dokumentów hipertekstowych w istniejących systemach wyszukiwawczych, cieszących się dużą popularnością w Polsce. Artykuł ponadto przedstawia i poddaje ogólnej analizie stosowane miary skuteczności działania systemów wyszukiwawczych w Internecie.

EN

This article presents selected methods of searching and ranking of hypertext documents in the existing search engines in Poland. In addition, this article describes and evaluates applicable measures of operation efficiency of the search in the Internet.

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Ewolucja systemów wyszukiwawczych w Internecie

Zdonek D.

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2004

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z. 17

183-192

PL

Artykuł poświęcony jest problematyce wyszukiwania informacji w rozległych zasobach Internetu. W tym artykule postara no się przybliżyć obecnie stosowane rozwiązania techniczne systemów wyszukiwawczych. W pierwszej części zaprezentowano problemy wynikające z dynamicznego rozwoju Intemetu, natomiast druga część przedstawia najciekawsze zdaniem autora rozwiązania programowe i systemowe zastosowane w polskich, jak i zagranicznych wyszukiwarkach internetowych. Trzecia część stanowi próbę określenia przyszłych trendów ewolucji systemów wyszukiwawczych w Internecie.

EN

This article presents the issue of searching for information on the Internet and describes current technical solutions used in search systems. The first section focuses on problems caused by the dynamic development of Internet. The second section presents some of the most interesting software and system solutions applied in Polish and foreign search engines. The third section attempts to forecast future trends in the evolution of lnternet search systems.