First Paper: An Investigation into the Steady-State Characteristics of Plain Slideways

Abstract

This paper describes steady-state friction tests on a scraped-cup ground combination of cast iron surfaces. The experimental conditions were representative of the operating conditions on a machine tool feed drive employing plain slideways.

The range of the relative sliding velocity investigated was 0 → 1 in s^-1, and the influence of lubricant viscosity of both polar and non-polar additive lubricants is shown. An investigation into the effect of oil grooves is also reported.

Data obtained from squeeze film measurements enabled the characteristics, normal to the sliding plane, to be specified. These characteristics, together with measurements of the separation of the surfaces, enabled the steady-state friction characteristics to be predicted over the range of mixed and hydrodynamic lubrication covered by the tests. This work formed a basis for the investigation into the mechanism of the friction characteristics under dynamic conditions.

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References

Bell

Burdekin

‘The frictional damping of plain slideways for small fluctuations of the velocity of sliding’, Proc. 8th M.T.D.R. Conf., Manchester 1967 (Pergamon Press).

Influence of Type of Surface, Lubricant Viscosity and Load on the Friction Characteristics, P.E.R.A. Rpt No. 59, 1958.

Friction and Lubrication of Machine Tool Slideways—Performance of Boring Machine Table, 1961, P.E.R.A. Rpt No. 87.

Domeos

‘Uber das verschleib und Reibungaverhalten von Werkzengmaschinen—Gleitfugrungen’, 1966 (Doctorate Thesis, Technischen Hochschule Aachen).

Burdekin

‘The stability and damping of machine tool feed drives’, Ph.D. thesis, 1968 (Manchester University).

Bell

Burdekin

‘Dynamic behaviour of plain slideways’, Proc. Instn mech. Engrs 1966–67 181 (Pt 1), 169.

Connolly

‘The static stiffness of machine tool joints’, M.Sc. thesis, 1965 (Manchester University).

Levina

E. M.

‘Calculation of contact deformation in slide-ways’, Machines and Tooling 1965 36 (No. 1), 8.

Needs

S. J.

‘Boundary film investigations’, Trans. Am. Soc. mech. Engrs 1940 62, 331.

10.

Fuks

G. J.

‘The properties of solutions of organic acids in liquid hydrocarbons at solid surfaces’. Research in surface forces 1962 (ed. by Derjaguin

B. V.

), 79 (Trans. Consultants Bureau, New York).

11.

Moore

D. F.

‘A review of squeeze film’, Wear 1965 8, 245.

12.

Rabinowicz

Discussion on reference (6).

13.

Fuller

D. D.

Theory and practice of lubrication for engineers 1965 (Wiley).

14.

Kudinov

V. A.

Lisitysn

M. M.

‘Factors affecting uniformity of movement of tables and tool slides in mixed friction conditions’, Machines and Tooling 1962 33 (No. 2), 2.

15.

Salama

M. E.

‘The effect of macro-roughness on the performance of parallel thrust bearings’, Proc. Instn mech. Engrs 1950 163, 149.

16.

Dobry

‘The transition between boundary, mixed and hydrodynamic lubrication’, Wear 1964 7, 290.

17.

Levit

G. A.

Lur'e

B. G.

‘Slideway calculations for feed machines on the basis of friction characteristics’, Machines and Tooling 1962 33 (No. 1), 12.