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Showing papers in "International Journal of Machine Tool Design and Research in 1971"


Journal ArticleDOI
R. Komanduri1
TL;DR: In this paper, experimental results of machining with a wide range of negative rake tools are presented, and it is shown that when machining tools up to nearly −90 deg. rake, either chips may be produced or the metal may be ploughed.

131 citations


Journal ArticleDOI
TL;DR: In this paper, the work-rounding mechanism in centerless centerless grinding has been analyzed analytically and experimentally and several methods to make the out-of-roundness of work as small as possible avoiding the generation of vibrations are given.

39 citations


Journal ArticleDOI
TL;DR: Theories of hydrodynamic lubrication for the hydrostatic extrusion of rigid-perfectly plastic and work-hardening materials are derived in this paper, and conditions under which hydrodynamically lubricated extrusion may exist are determined.

22 citations


Journal ArticleDOI
TL;DR: In this paper, a plain carbon steel with carbide employing an explosive quick-stop device to freeze cutting action reveal some interesting facts on built-up edges, and an attempt is made to elucidate the main features of this complex phenomenon.

20 citations


Journal ArticleDOI
TL;DR: In this article, the effects of eccentricity ratios, attitude angles and load angles on the performance of six recess and six pad partial spherical bearings are discussed and a manufacturing method is described, including details of the eroding technique used to produce high pressure recesses.

20 citations


Journal ArticleDOI
TL;DR: The design and operation of an explosive quick-stop device conceived on the lines of an original design by Hastings is described in this article, and its performance during cutting and freezing of cutting action is assessed and criteria for determining its efficiency discussed.

19 citations


Journal ArticleDOI
TL;DR: In this paper, the effects of various cutting parameters while machining austenitic high manganese steel at an elevated temperature in a Shaping machine are analyzed. And empirical relationships are also suggested for calculating the values of the cutting forces.

18 citations


Journal ArticleDOI
TL;DR: In this paper, the experimental results of peripheral electrochemical grinding of nimonic 105 using a 10 per cent by weight aqueous solution of sodium nitrite as electrolyte are presented.

13 citations


Journal ArticleDOI
TL;DR: In this paper, an experimental procedure for determining receptances of machine tool structures in which a magnetic vibrator applies a random force between the table and the spindle is described and results obtained from testing two machine tools by this method, as well as by the conventional sinusoidal force method, are presented and discussed.

6 citations


Journal ArticleDOI
TL;DR: In this article, a two-component dynamometer has been designed and constructed, capable of the accurate monitoring of forces whose magnitudes range from fractions of a pound to hundreds of pounds.

6 citations


Journal ArticleDOI
TL;DR: In this article, mild steel rings of varying height/outside diameter/inside diameter ratios were subjected to axial compression, at different platen speeds and under different lubrication conditions.

Journal ArticleDOI
TL;DR: In this article, the advantages of externally pressurized gas bearings onto which gas is supplied through a row of porous discs, the surfaces of which are ground together with the bearing pad surface, are analyzed.

Journal ArticleDOI
TL;DR: In this article, the secondary shear zone has been investigated with mild steel with H.S. tool having 5 per cent cobalt and metallurgical behavior of the work material in the extreme conditions of strain and temperature in the SZ has been discussed.

Journal ArticleDOI
TL;DR: In this paper, the authors show that the actuation of a hammer by the combustion of hydrocarbon fuels with air can be used also for machines operating at relatively slow speeds, and the operational characteristics of such a machine, working with various mixtures of hydrocar fuels, are discussed.

Journal ArticleDOI
TL;DR: In this paper, the authors describe applications of the double modulation method for obtaining of real part of the frequency characteristic of the mechanical structure and for measurements of the spindle rotation accuracy.

Journal ArticleDOI
H.J. Ulrich1
TL;DR: In this paper, it is shown that the discrepancy between calculated and measured values of the natural frequency ωn of hydraulic actuators is due to three factors: 1. The effective mass of the pipe oil volume, the pipe cross section can be optimized.

Journal ArticleDOI
TL;DR: In this article, the effect of flange design and bolt pocket constructions on the stiffness and deformations of the flange connections subjected to tensile and bending forces was investigated.

Journal ArticleDOI
TL;DR: In this paper, the influence of cutting velocity, feed rate and depth of cut on the incidence of "comb-crack" crazing in the crater region of alumina tool tips was investigated.

Journal ArticleDOI
R. Bell1
TL;DR: In this article, the application of hydraulic cylinder drives to N.C. machine tools is reviewed by the study of significant recent developments in machine tool design, and by the critical consideration of drive compensation techniques.

Journal ArticleDOI
TL;DR: In this article, an equivalent roller-block using two master rollers instead of the four balls of the ball-block is suggested for the detection and indication of lobing, the workpiece is rotated on the rollers under a clock indicator.

Journal ArticleDOI
TL;DR: In this paper, the authors deduced and described a novel method of calculating the load of antifriction elements and the deformations of the anti-riction guideways on the consideration of table and bed compliances.