Product category:
Vertical machining centres (VMC)
News Release from: Traub Heckert UK | Subject: Hermle C800U mid-range CNC VMC
Edited by the Manufacturingtalk Editorial
Team on 19 February 2002
Gantry type CNC M-C offers stiffer
structure
This five-axis mid-range CNC vertical machining centre has options of up to 40,000 revs/min spindle and is a gantry design which provides a far stiffer structure for high speed machining.
The five-axis Hermle C800U mid-range CNC vertical machining centre, demonstrated on the Traub Heckert UK stand at MACH 2002, has options of up to 40,000 revs/min spindle and is a gantry design which provides a far stiffer structure in order to meet the high precision specification The machine design which has a swivelling and rotating NC axis for three-face machining, eliminates any spindle overhang typical of a C-frame machine construction and allows the table to be fixed
This article was originally published on Manufacturingtalk on 22 May 2001 at 8.00am (UK)
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The Hermle C800U bed has three separate guideways, the third being central to and set back from the two outer guideways which, in effect, halves the span.
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To produce the key components for such finely tuned power units calls for quality engineered machine tools and here, TWR has installed a Hermle C800U five-axis machining centre
The C800's bed is a mineral casting giving a low thermal expansion with excellent shock absorption.
Also, its single unit construction significantly reduces manufacturing costs.
The bed is designed with the guideway axes and drive components positioned outside and above the machining area.
As a result, contamination from swarf and coolant on the guideways is eliminated, while guarding of the guideways is simple and becomes very cost-effective.
The tool changer support on the C800 is positioned just behind and close to the spindle, negating the need for a change arm.
The 30 tool capacity disc magazine rotates in a horizontal plane and is driven by an AC servo motor through planetary gearing has a tool change time of six seconds chip-to-chip.
Tool exchange takes place through an opening in the rear of the machine.
Working volume is 800mm by 600mm by 500mm and rapid traverse rates of 35m/min.
Spindle power is 25kW giving 10,000 revs/min as standard with 16,000, 24,000 and a high speed option of 40,000 revs/min.
Control is via the latest high specification Heidenhain iTNC 530 with direct measuring scales giving a resolution of 0.0001mm and positional accuracy of 0.008mm.
To meet customer specific tasks, the C800U as shown features a 630mm NC swivelling rotary table able to hold components up to 300kg.
It can also be ordered as a full five-axis machine with a two-axis trunnion table, as a four-axis machine with a four-sided clamping yoke that can hold multiple fixtures on each face or as a four-axis machine with a chuck and tailstock for machining rota-symmetric components.
MACH 2002 - NEC, Birmingham - April 29-May 3.
Hall: 5.
Stand: 5350.
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