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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Effect of nitride coating on the life of cutting tools

Shanshal, D. January 1983 (has links)
No description available.
12

The history of the machining centre with special reference to their development at H. W. Kearns

Sparkes, C. A. January 1991 (has links)
No description available.
13

An expert system for jig and fixture design

Lazaro, Anthony de Sam January 1989 (has links)
No description available.
14

High-rate grinding wheel design

Barlow, N. January 1988 (has links)
No description available.
15

Studies in the excavation of selected rock materials with mechanical tools

Hekimoglu, Osman Zeki January 1984 (has links)
This work covers laboratory studies in the excavation of selected rock materials with mechanical cutters. Cutting head design of rock excavation systems employing drag tools or disc cutters is investigated by considering their practical cutting action. Effects of tool tilt angle on the performance of roadheaders with longitudinal cutting heads are investigated in detail. Along with tilt angle, optimum tool spacing between adjacent cutters, cutting head geometry and mode of operation of roadheaders are also studied. Experiments with disc cutters covered mainly the effect of disc edge angle on disc performance. When the practical cutting action of drag tools is considered the trend of forces and specific energy becomes somewhat different from those obtained during flat rock surface cutting trials; however, the definition of optimum tool spacing with respect to drag tools confirms previous findings. Tilt angle has a significant influence on the performance of cutting tools; in particular, with corner cutting tools. It was found that individual tool forces are proportional to the cross-sectional area cut by the corresponding tool. Roadheader cutting heads with combined geometry offer better performances than those with spherical geometry when the tool spacing is kept constant around the cutting head. In arcing mode tool duties are also affected by boom length. Cyclic deepening of grooves exists when cutting with discs, discs having smaller edge angles requiring more successive passes to produce a complete breakout between adjacent grooves.
16

Structural Design of Machining Centers

Yeh, Wen-Chi 14 July 2000 (has links)
The purpose of this research is to present a systematic methodology for the creative design and evaluation of machining centers. First, the graph representation is to present machining centers by using the method of topological structure. A methodology of structure synthesise is developed for the 3, 4, and 5-axis machining centers by requirements and characteristics of machining centers. A cod of machining centers is presented and configuration enumerations of the 3, 4, and 5-axis machining centers are established, and then the configuration is drew. Second, characteristics of machining centers are established to evaluate the machining centers. Finally, appropriate configuration of machining centers is selected by the cutting characteristics to compare the patents and the industrial machining centers.
17

Distribution channel strategies of Japanese machine tool builders /

Fung, Wai-hing, Anthony. January 1989 (has links)
Thesis (M.B.A.)--University of Hong Kong, 1989.
18

Fault diagnosis and condition monitoring for NC/CNC machine tools

Harris, C. G. January 1987 (has links)
No description available.
19

Návrh kompaktního stroje pro třískové obrábění klíčů / Entwurf einer Kompaktmaschine zur Schlüsselbearbeitung

Žůrek, František January 2017 (has links)
This master thesis Design of a machine tool for a safety keys production deals with concept of a machine tool for production of safety keys. Solution variants are methodically elaborated, mainly concerning their achieved tact times and machine dimensions. A computation diagram for fast comparison of concepts in case of different customer key specification is presented. Chosen concept version is then detailed designed. The result fills a hole on the market of specific machine tools for machining of safety keys.
20

Distribution channel strategies of Japanese machine tool builders

馮偉興, Fung, Wai-hing, Anthony. January 1989 (has links)
published_or_final_version / Business Administration / Master / Master of Business Administration

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