Precision motion slideways

Details Precision motion slideways Precision motion slideways

1989-08-07

1990-07-31

Hannon, Thomas R.

Bearings

Linear bearing

Plain bearings

29898047, 384 26, 384 37, F16C 3320, F16C 3314

Patent

active

049446061

ABSTRACT:
A plain bearing slide system has a carriage mounted on a slide by use of bearing pads. Each bearing pad is coated with a layer of polymeric material having a convex surface, and is arranged to ride on a counterface. The combined thickness of the layer and a layer providing the counterface is such that the difference between the static and dynamic coefficients of friction is substantially less than the difference associated with the material when used in bulk bearings. A slide system using PTFE, and with a combined thickness of the layers of 2 to 3 micrometers, operated as a measuring instrument under ambient conditions such that the PTFE is substantially non-eroding, has proved capable of providing measurements to an accuracy of 0.05 nanometers.

REFERENCES:
patent: 3115696 (1963-12-01), Evans
patent: 3443461 (1969-05-01), De Biasse
patent: 3582157 (1971-06-01), Hammon
patent: 4060291 (1977-11-01), Seybold
patent: 4114945 (1978-09-01), Lutz
patent: 4738081 (1988-04-01), Tisma
patent: 4773769 (1988-09-01), Church
Konstruktion, vol. 31, No. 10, 1979, Springer-Verlay (Berlin, DE), R. Seyd: "Geradfuhrungen mit dynamischer Schmierung-ein Beitrag zur Gestaltung (cont.) und Aus legung von Geradfuhrungen", pp. 399-403.
Patent Abstracts of Japan, vol. 8, No. 182 (M-319) (1619), Aug. 22, 1984, & JP, A, 5973622 (Nobuyuki Tsuboi) Apr. 25, 1984.

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