Apparatus for machining relatively hard building material

Details Apparatus for machining relatively hard building material Apparatus for machining relatively hard building material

1986-11-06

1988-07-12

Whitehead, Harold D.

Stone working

Sawing

Rotary

60426, 5116592, B28D 104

Patent

active

047562986

ABSTRACT:
The drive motor (1) drives a machining tool (2) which can be fed forwardly by means of a feed motor (3). Both motors (1, 3) are supplied with pressure fluid by the same hydraulic pump (4). A quantitative divider valve (5) divides the oil flow coming from the hydraulic pump, a control valve (24) controlling the flow of pressure fluid in the forward feed motor in such a way that the power output at the forward feed motor falls with increasing resistance at the machining tool, thereby providing for output-regulated operation of the machining tool. In the same way as the forward feed movement, the feed movement in respect of depth of the machining tool can also be produced by way of a depth feed motor (7).

REFERENCES:
patent: 2488643 (1949-11-01), Smith
patent: 3877180 (1975-04-01), Brecker
patent: 3975909 (1976-08-01), McBurnett
patent: 4310198 (1982-01-01), Destree
patent: 4553389 (1985-11-01), Tischer et al.

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