Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Frictionally engaging sides of opening in work
Patent
1984-11-15
1987-03-24
Weidenfeld, Gil
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Frictionally engaging sides of opening in work
408 79, 408138, 408 54, 408708, B23B 4112
Patent
active
046521860
ABSTRACT:
A portable boring machine for boring bearing housings in situ includes a pair of spaced apart mounting members for adjustably positioning a boring bar within a row of bearing housings. The spaced apart mounting members are removably positionable on the boring bar and permit rotation of the boring bar with respect to the housings. The mounting members include radially adjustable jaws which enable the space between the boring bar and an adjacent bearing housing to be adjusted by the user in order to adjust the position of the boring bar within the housing and to vary the inclination of the boring bar with respect to the row of housings to be reconditioned. In this way the user has complete control between the relative positions of the boring bar and the bedplate. Moreover, since the support members are removably positionable on the boring bar they may be adjusted in position with respect to the particular housing to be bored. A boring head, concentrically mounted about the boring bar, is rotated about the housings as the boring bar is rotated and is translated along the length of the boring bar by way of a rotatable screw mechanism contained within the boring bar. The boring head is secured about the boring bar by a split ring whose free ends may be fastened by a threaded fastener. The boring bar may be supported intermediately by an intermediate support that includes a plurality of radially outwardly extending, adjustable fingers. The boring bar and its screw may be rotated at different rates through a single motor and a geared planetary drive mechanism.
REFERENCES:
patent: 200071 (1878-02-01), Love
patent: 744286 (1903-11-01), Boardman
patent: 1217481 (1917-02-01), Mewes
patent: 1376451 (1921-05-01), Martell
patent: 1973386 (1934-09-01), Morgan
patent: 2401838 (1946-06-01), Mitchell
patent: 2638802 (1953-05-01), Froussard
patent: 2651221 (1953-09-01), Foster
patent: 4451186 (1984-05-01), Payne
Howell Daniel W.
Weidenfeld Gil
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