Read e-book online Advances in Machine Tool Design and Research 1969. PDF

By S. A. Tobias

ISBN-10: 0080156614

ISBN-13: 9780080156613

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Read Online or Download Advances in Machine Tool Design and Research 1969. Proceedings of the 10th International M.T.D.R. Conference, University of Manchester Institute of Science and Technology, September 1969 PDF

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Additional resources for Advances in Machine Tool Design and Research 1969. Proceedings of the 10th International M.T.D.R. Conference, University of Manchester Institute of Science and Technology, September 1969

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Taking the border effect into account 6 = 2 X 0-051 gives C = 1*79 X 10 4 Nsm- 1 . (a) (b) FIG. 2. Eccentricity of cylindrical film dampers. D. g. when a damper is mounted around a lathe spindle, some eccentricity is unavoidable (Fig. 2 a, b) due to mounting inaccuracy, thermal deformation, static and dynamic deflection when the spindle is loaded by cutting forces. In order to compute the effect of this eccentricity we considered a simplified hypothesis as if we had two half-cylinders, one with radius R + e and the other one with R — e.

Of Tools FIG. 11. Number of tools required on N/C turning machines. 42 P. STOCKMANN FIG. 12. Drum-type turret head. £C_ * • % %^' FIG. 13. Interchangeable tool carriers. carriers take the form of solid prisms with premachined tool bores (Fig. 13). e. users who know the advantages of multiple tool machining from these machines. Tooling equipment can be taken over from drum-type turret lathes and fitted to these prisms without serious modifications (Figs. 14, 15). Figure 16 shows an application of this tooling system in practice.

Machines of this type with three or four controlled axes are more sophisticated in terms of machine mechanisms and control section and therefore demand a higher hourly machine rate. In addition, both work preparation and setting demand more effort and expenditure so that the justification of this thinking can only be economically proved in certain individual instances. Over and above, simultaneous use of several tool slides also depends on so many other factors and conditions that the technical feasibility of this method only applies to part of an overall spectrum of P.

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Advances in Machine Tool Design and Research 1969. Proceedings of the 10th International M.T.D.R. Conference, University of Manchester Institute of Science and Technology, September 1969 by S. A. Tobias

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