Abrading – Precision device or process - or with condition responsive... – With feeding of tool or work holder
Patent
1997-10-15
1999-07-27
Eley, Timothy
Abrading
Precision device or process - or with condition responsive...
With feeding of tool or work holder
451251, 451243, 451252, B24B 4900, B24B 5100
Patent
active
059280611
ABSTRACT:
A wheel-head feed mechanism for a grinder comprising a base and a wheel head which is guided by a linear guide section provided on the base and rotatably supports a grinding wheel via a wheel spindle driven by a motor. The wheel-head feed mechanism includes feed screw mechanism composed of a screw shaft and a nut unit engaged with the screw shaft, the feed screw mechanism advancing and retracting the wheel head with respect to a workpiece, and servomotor for rotating one of the screw shaft and the nut unit. The screw shaft is offset from the linear guide section toward the wheel spindle. The nut unit includes a radial hydrostatic bearing section for supporting the root of a male thread of the screw shaft in the radial direction of the screw shaft by hydrostatic pressure, as well as a thrust hydrostatic bearing section for supporting the flanks of the male thread of the screw shaft in the axial direction of the screw shaft by hydrostatic pressure.
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Norio Ota, Toyoda Koki Technical Review, vol. 37, No. 2, (serial No. 134), pp. 16-23, "The 18.sup.th Japan International Machine Tool Fair", Oct. 1996.
Fukuta Eiji
Ido Masahiro
Nagano Hideki
Niino Yasuo
Shima Toshihiko
Banks Derris Holt
Eley Timothy
Toyoda Koki Kabushiki Kaisha
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