Umac G30 slotting machines

Umac VERTICAL SLOTTING MACHINES
MACHINE FRAME: manufactured entirely in thickness electric welded sheet metal, well ribbed, with thermic treatment to ease the internal stress.
HEAD AND RAM: made in cast iron. The head sliding surfaces are ground and hand scraped for ram accommodation to them. The alternating motion is actuated by an asynchronous auto-braking motor with gearing down and crank connecting rod system. Ram stroke adjustment is made by manual shifting of the cam on flywheel. Tilting head 20 deg. For the accurate positioning on tapered slots.
RECTANGULAR TABLE for models in molten cast iron made. sliding guides are ground and scraped. A wide central hole is provided for the pass throughout of long shafts. ROTARY TABLE for models in molten cast iron made, with wide central hole for slotting long shafts. Both rotary table and its supporting plate are ground and scraped. Rotation actuated by an endless screw and plate
wheel screw in carbonized and ground, wheel in bronze with micrometrical backlash recovery. Automatic, maintenance free lubrication of the plate guide. Pneumatic
locking of rotation during the work, by machine CN.
LONGITUDINAL and CROSS AXES: the worktables movement on models with relevant CN axes is sliding on re-circulating ball screws ground and protected.
LUBRICATION: forced lubrication on the sliding surfaces by means of automatic pump with timer. In shortage of oil level the cycle-stop is automatically actuated with signalling.
COOLING SYSTEM: electro-pump drive and closed circuit:
The chiptray tank is housed under the worktable, easily removable. SAFETY GUARD: highly efficacious with perimetrical carter in steel plate and plexiglas made, opening front to allow the passage of the timber cart. Safety microswitch locking the door during work, in accordance with the current safety prescriptions.
ELECTRIC INSTALLATION: each electronic axis is driven by brushless motor with relevant driver controlled by CN, which allows the operator the easy programming of the most complicated jobs. Electrics are made following the current standards. The new model of slotting machine "type" is the outcome of our long years as leading manufacturers of slotting machines, which has allowed us to widen the range of the already known machines with 1, 2, 3 electronic axes. The 4 axes slotting machine has been conceived and carried out in order to reduce considerably tooling times, to execute special machining and to increase the power and
the quality of slot cutting. The new 4AC version together with our tools production see tools catalogue will optimize slot execution and will make the slotting machine an essential and much appreciated machine tool in every workshop.
PROGRAMMING ON MODEL:
NC control system on 4 axes automatic table feed on the longitudinal and cross axes and electronic indexing of the built-in rotary table, programmable and reversible for any depth and width of slot. The auto tool lift is actuated by an alternating motion of the table. After reached the pre-selected slot depth, automatic execution of some finishing strokes; ram stop high and rapid table return to the work starting point. Built-in electronic rotary table with central bore and automatic indexing up to 1500 symmetric and 99 asymmetric divisions. Special slots can be executed, as trapezoidal, circular and linear. The interaction between operator and machine is allowed by the NC system, introducing the working data, visualized on the coloured display touch screen 10. The new touchscreen CN system makes machine programming more complete, versatile and easy to understand. lntuitive programming system with direct specification of the controls to be executed; up
to 100 made up programs with the relevant zero point can be stored. The new model of slotting machine combines the traditional rod system ram drive speed with CN ram control, which allowed transforming ram axis into a real CN axis for the execution of special machining such as front conic slots and automatic execution of two or more sequential programs, with different cutting speeds. Standard possibilities of the software on mod.
- Groove second operation: it can be made without re-starting from beginning.
- Incremental tool lift: during the return ram stroke, the tool goes out from the slot and re-starts from the initial point.
- Sectors adjustable feed: it's possible to execute flexible machining programs with feed and speed adjustable in 3 degrees.
- Decreasing feed: right for slotting with tip shaped tools. In fact, at beginning the cutting surface is small and feed is consequently big: gradually reducing feed in relation to the
enlargement of the cutting surface. Operation is made just programming the starting and final feed sizes.
- Motor brushless for ram movement: the cutting motion by brushless motor and NC grants a continuous ram motion with constant torque from beginning to end of the stroke, with little tool consumption and better cutting quality. Software can be predisposed for the execution of conical cutting and slots without tilting the head for minimum inclinations and widths. Special appliances of the software, on request:
- Slot-end second operation: in case of widening slot, the second operation can be made in order to polish the end.
- Slot-sides second operation: it is possible to enter a widening value in order to restart sides machining.
- Air blower: right for removing chips from blind holes. At each ram stroke the opening of an electro-valve controls the biowing.
- Edge chamfering: this is fit to automatically chamfering up to 45 deg. The two entering edges.
- Tangential slots: automatic execution of two or more tangential slots of any width.