An Improved Machine for Shaping Metals by Cutting, Boring, and Grinding Action.
Year: 1896

page_text: Date of Application, 11th May, 1896-Accepted, 29th Aug., 1896
COMPLETE SPECIFICATION.
An Improved Machine for Shaping Metals by Cutting, Boring, and
Grinding Action.
I, CURD NUBE of Offenbach on Main Engineer, do hereby declare the nature
of this invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention has for its object the construction of a machine for cutting or
shaping metals whereby objects such as punches, dies, matrices, &c. can be shaped
either by cutting with rotary cutters or by boring or by grinding them with emery
or grinding discs, when in a hardened condition, and thus increasing the durability
of the tools.
The machine, which acts partly as grinding machine partly as boring machine
and partly as rotary cutting machine and operates either from above or from below,
or from the side, or in all these directions simultaneously, is shewn on the
accompanying drawing, in which Figure 1 shews a sectional elevation, Figure 2 a
side view of the machine, while Figure 3 shews a plan and Figure 4 a section of
the chuck and its support.
The machine consists of a base a which may be constructed as a pedestal, as
shewn, or otherwise, in which is mounted a vertical working shaft w that receives
rotary motion by suitable gearing from a source of power.
The shaft is provided with a socket at its upper end to receive a working tool,
which according to the purpose in view, may be either a grinding disc, a rotary
cutter or boring tool. The working shaft was also the working shafts v and z run
in fixed bearings. The bearing of the shaft is constituted by the coned part k,
the screwed collars m and the step bearing f, by means of which a very steady
motion of the shaft is obtained. For working accurately on the shaped surface of
the object, two supports cr slide rests s and s are provided which work at right
angles one upon the other, the object to be operated upon being either fixed
directly on the top support, or in a chuck t situated on the same, which is capable
of being rotated.
As the nature of the work requires that either the working shaft with the cutter
carried thereby, or the object operated upon itself, shall be moved upward and
downwards, this is effected in the present instance by forming the upper part of
the base cylindrical while the under part of the support is constructed with a
cylindrical sleeve p that can slide vertically on the cylindrical part of the base, or
it might slide in lateral guides on the framing.
The accurate regulation of this vertical motion is effected by means of a hand
wheel mounted on the threaded portion of the cylindrical extension of the
base; or in place of a hand wheel' h, may be used a worm wheel geared with a
worm rotated by hand, or other equivalent device.
If the supports s, is mounted with a sleeve on the cylindrical part of the base
as described, it can also be arranged to rotate on the latter, such rotation being
effected either by hand or by suitable gearing.
Vertically above the centre line of the shaft w is mounted a second working
shaft r, mounted in bearings similar to the lower shaft w and adapted at its lower
end to receive rotary cutters, boring tools, or grinding tools. This shaft is capable
of sliding vertically in guides d on the framing.
The driving gear of the shafts w and can be so arranged that both receive
motion simultaneously, so that the object can be operated upon simultaneously from
above and below.

page_text: The arrangement can also be such that by connecting or disconnecting the
coupling of the driving pullies x and y, or other driving gear, ouly one of the two
shafts can be set in motion.
A third driving shaft z. arranged at right angles to the shafts w and v, can be
provided, adapted to receive a laterally acting tool and driven either by toothed
gear from the upper shaft as shewn, or in any other convenient manner, and so
arranged as to be actuated simultaneously with w and v or independently thereof.
If it is desired to operate on circular arcs, of the object with a rotary cutter, the
adjustment is effected by means of the revolving chuck t in which the object is
fixed.
This annular chuck has a central opening so that the rotary cutter and grinding
tools of the shafts v and w, are free to work through it. At its outer periphery,
the chuck has bevilled guide surfaces, working in corresponding undercut guides,
and can be provided with a toothed ring gearing with a worm, as shewn at Figures 3
and 4 for effecting its rotation.
On its upper surface, it is provided with suitable clamping devices for holding
the objects to be operated upon.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A machine for shaping metals, by cutting boring or grinding operations
wherein a vertical working shaft w is so arranged in the framing that the socket
thereon for the reception of the tools has its opening directed upwards, substantially
as described.
2. In a machine for shaping metals, such as is referred to in the first claim, the
arrangement of three working shafts w. v. z. in such manner that each can be
employed alone for working tools, or in any desired combination with the others,
and so arranged that the vertical shaft w mounted in the base of the framing has
the socket for the reception of the tool directed upwards, while the vertically
adjustable shaft v has the socket for the reception of the tool directed downwards,
and the horizontal shaft z. is adapted to receive a laterally working tool,
substantially as described.
3. In the machine for shaping metals referred to in the first and second claims,
the frame like supports or slide rests s. s surrounding the vertical shaft w, and
arranged at right angles, one above the other, the said supports being capable of
both vertical sliding motion and of horizontal rotary motion, substantially as
described.
4. In the machine for shaping metals referred to in the 1st 2nd and 3 claims.
The combination with the supports s, s', of a ring shaped chuck, open at the centre,
and provided with bevilled guide surfaces and with toothed ring and worm gear for
effecting its rotation, substantially as described.
Dated this 11th day of May 1896.
ABEL & IMKAY,
Agents for the Applicant..