Browsing by Author "Cherry, J."

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    American teaching and practice of industrial engineering and management
    (College of Aeronautics, 1956-02) Cherry, J.
    In June 1954 a small mission, comprising T.B.Worth, A.M.I.E.E., M.I.Prod.E., F.R.S.A., Principal Senior Lecturer in Production Engineering and Assistant Head of the Department of Mechanical and Production Engineering at Birmingham College of Technology, K.J.Shone, M.A. (Cantab),A.M.I.Mech.E., M.I.Ear.E., M.E.I.C., Head of Department of Industrial Administration, Royal Technical College, Glasgow, and the author, visited the United States of America to "observe and gain experience of American methods of training in Industrial Engineering and Management both in universities and industrial plants". Subsequently, in September, D.M,Williams, Ph.D., B.Sc., (H.M.I.) joined the mission, which returned in November 1954. Each member investigated different aspects and separate reports are being presented. This report deals mainly with education in Industrial Engineering. Other Sections, dealing with education in Management, Industrial Engineering and Management in Industry, Research and Consultancy will be presented subsequently by the author. Education in Industrial Engineering in the U.S.A. laid emphasis on the need for sound education in the bagic and engineering sciences prior to the study of Industrial Engineering subjects. Considerable attention was paid to the economic aspects of industry and subjects such as Engineering Economic Analysis were prominent. Awareness of the impact of new developments in the industrial engineering field was also evident and curricula were being revised to introduce subjects such as Electronic Theory into the electrical programme, and the application of Operations Research techniques'to the mathematics programme. The value of formal education in Industrial Engineering was acknowledged by most industrialists, who were absorbing I.E. graduates at a rate exceeding 1500 per annum.- In 1954 there were approximately 8,000 students enrolled in. I.E. courses. A comparison of equivalent courses in Great Britain showed that less than 50 students were enrolled. The comparison also revealed the inadequacy of the Higher National Certificate courses in Production Engineering, and a strong plea is made for more facilities for students to take Higher National Diploma courses in Production Engineering.
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    Machinability dynamometers used at the College of Aeronautics
    (College of Aeronautics, 1955-12) Cherry, J.
    INTRODUCTION Much more interest in machinability investigations has been shown in recent years, both by colleges and by Industrial Research departments, due partly to the difficulty encountered in machining some of the new gas turbine materials and partly to the availability of simple and economical dynamometers as are described in this Note. These dynamometers were designed to provide simple robust instruments capable of being easily applied to a wide range of machines without modification. Direct mechanical movement is the basis of their construction and this has been justified by the trouble free service given over a period of five years. Almost onehundred of each of these instruments are being used, and so many requests have been received for a more comprehensive account of their range of uses that the preparation of this Note seemed justified. It is encouraging to see the vigour displayed by industry and the Colleges in this field since so much remains to be done to establish practical machinability, data for British materials. By collaboration between investigators it should be possible to arrange a programme of research to cover a wide range of materials with the minimum duplication. The illustrations of the instruments are shown by the courtesy of Coventry Grinders Ltd. , Coventry.
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    A new approach to the prediction of tool wear
    (College of Aeronautics, 1967-07) Cherry, J.
    Tool life is of major concern for economical production in the metal cutting industries and a simple method of predictive the tool wearability of materials would be of considerable value in enabling optimum cutting conditions to be determined. It has been shown that tool life for minimum cost Der piece = - 1)K where ‘n’ is the exponant, in the speed/life relationship VT - 11 = C. Since I n' is substantially constant for a given tool material and chip thickness, and K is constant for given operating conditions then the life of the tool (T) has an unique value under these circumstances. Also since tool life (T) will be determined by a specific magnitude of tool wear, a simple method by which the time to arrive at this criterion could be predicted would be very useful. In the experimental work to be described it has been possible from simple cutting tests to predict tool wear over a limited range of conditions— Much more extensive research is required to establish the range of the technique.
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    Report on the machinability of Aircraft Steel D. T. D. 331 (B. S. S. 99) using H. S. S. tools
    (College of Aeronautics, 1955-04) Cherry, J.
    In all the tests conducted the results obtained were reasonably consistent. High Speed Steel Tools containing 18% Tungsten and 5% Cobalt were used throughout. The same tool was used as far as possible to minimise the variables entering the tool life tests ... [cont.].