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Universal type machine tool
| Details |
Inventors: Aldrin, Per O.;
Assignee:
Primary Examiner: Bilinsky; Z. R.
Assistant Examiner:
Attorney, Agent or Firm: Frishauf, Holtz, Goodman & Woodward
A universal type machine tool has a horizontal bed which, via a turnable intermediate slide, supports a rectangular work table, the slide being displaceable along the bed. A vertical column, displaceable along a bed perpendicular to the first bed has a second intermediate slide displaceable along the column and turnable around a horizontal axis. Its turnable portion carries a rectangular plate along which a foot plate for a drive unit is longitudinally displaceable. The foot plate supports a drive unit turnable around a horizontal axis and adapted alternatively to rotate a tool or a workpiece. |
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DETAILED DESCRIPTION The realization of the above objects will, together with further advantages of the invention, appear from the following detailed specification.
The main characteristic of a machine designed according to the invention is that the intermediate slide of its column supports a plate along which the drive unit is movable for fixation in various positions.
The drive unit can itself be turned around a horizontal axis and the plate is, by means of a lead screw, feedable relative to the said intermediate slide.
Through e.
g.
British patent No.
524,732 there is previously known a machine tool comprising a horizontal bed with a guide along which an intermediate slide is displaceable.
The top portion of the slide may turn around a vertical axis and it supports a workpiece-holding table which by means of a lead screw can be displaced in its longitudinal direction.
The machine further comprises a vertical column having a second intermediate slide which is vertically displaceable along the column and the outer portion of which may turn around a horizontal axis.
To the turnable outer portion of that slide there is secured a drive unit consisting of a tool holder and a related drive motor.
The drive unit is displaceable in its longitudinal direction.
It is, however, important to observe that the drive unit is displaceable only in the sense that it may be set in different desired positions.
More particulary, it comprises a tube which by means of a surrounding clamping sleeve may be fixed in different positions.
The drive unit is, however, not displaceable in the sense that it can be fed longitudinally or, otherwise put, it does not comprise any lead screw permitting continuous feeding of the tool during a working operation.
The term "drive unit" has been used here for reasons which will appear from the detailed specification.
It comprises an electric motor, a spindle and, generally, also a gear box.
The spindle may carry a tool holder, e.
g.
a chuck for drills.
However, according to an important feature of the invention, the spindle may instead support and rotate the workpiece, the tool being stationary mounted on a portion of the machine
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