Product category:
Vertical machining centres (VMC)
News Release from: Mori Seiki UK | Subject: Accumill 4000 vertical machining centre
Edited by the Manufacturingtalk Editorial
Team on 30 January 2002
Small parts machined with minimum
downtime
Intended for precision machining jobs where minimising non-cutting is of high priority, Mori Seiki has designed an extremely accurate, fast and highly compact VMC - the Accumill 4000.
Intended for precision machining jobs where minimising non-cutting is of high priority, Mori Seiki has designed an extremely accurate, fast and highly compact vertical machining centre - the Accumill 4000 Equipped with a 5.5/3.7kW
This article was originally published on Manufacturingtalk on 5 Jun 2001 at 8.00am (UK)
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12,000-rev/min spindle - full speed reached in 0.64 sec from zero - the Accumill 4000 has fast traverse/feed rates up to 48m/min Time is further saved with a toolchange of only 1.9 sec chip-to-chip.
The standard tool magazine holds up to 20 tools.
Occupying a floor space of just 3.3m2, the Accumill 4000 has a working envelope of 560 by 430 by 350mm.
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The Accumill described in more detail.
Designed specifically for the precise machining of small workpieces, where minimising downtime is of high priority, the Pollard Mori Seiki Accumill 4000 is extremely accurate, fast and highly compact vertical machining centre.
Capacity of the Accumill 4000 fixed column, moving table VMC is for small components in steels and non-ferrous materials weighing up to 200kg and conforming within a 560 by 430 by 350mm working envelope.
Table size is 700mm by 400mm.
Yet the machine occupies a floor surface of just 3.3m2.
To minimise non-cutting time the Accumill 4000 has a 12,000 rev/min directly driven No.30 taper spindle, which accelerates to full speed in 0.64sec.
Fast traverse and feed rates in all axes are up to 48m/min at acceleration rates of 9.4, 7.3 and 8.8m/sec2 in X, Y and Z respectively.
Each axis reaches full traverse speed in 0.09 - 0.12sec.
A valuable contribution to minimising non-cutting time is a fast-acting toolchanger arm.
It exchanges tools from a standard 20-tool magazine in 0.7 sec, or 1.9sec chip-to-chip.
To achieve and hold high positioning accuracy, Mori Seiki has developed a heavily ribbed truss cast iron machine structure.
It is designed to avoid local stress concentration areas and greatly improve the machine structure's resistance to twisting and bending.
Consequently, in a boring trial in FCD450 cast iron, using a 40mm diameter boring bar, a bore accuracy of 1.3 micron was achieved.
Settings included a spindle speed of 1034 rev/min, cutting speed of 130m/min, feedrate of 103mm/rev and a depth of cut of 0.3mm.
Surface finish generated was 11.95 micron Ry.
The high level of accuracy embodied in the Accumill 4000 suits it to the machining of, for example, automotive pump bodies and water pump covers, engine front covers and precision general engineering components such as hydraulic valve blocks, control valve bodies and precision machine parts.
The Mori Seiki MSG-505 CNC, with the new generation of Mori Advanced Programming Production System (MAPPS), features position loop control for the axes servo drive system to reduce normal speed errors.
Cutting path speeds on corners and during circular interpolation is optimised to maintain edge precision.
Vector interpolation is used to smooth out interpolation from one program block to another and maintain circular precision.
Pre-interpolation commands include acceleration/deceleration to keep pathing errors to a minimum.
Options include a High Accuracy Control Function II for the maintenance of smooth profiling paths in aluminium, using high spindle speeds and axes feedrates.
NURBS interpolation function is also optionally available.
MAPPS includes conversational automatic programming, 3D graphic simulation, set-up support, CNC data input/output as well as program editing, tool registration and all the features associated with an up-to-date control package.
Accumill is a fast, compact and highly accurate VMC, which brings added quality control security to OEM and sub-contractor alike. Request a free brochure from Mori Seiki UK ...
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