WHEN THE MILLENNIUM VERTICAL TURNING CENTRES WERE INTRODUCED 20 YEARS AGO THEY WERE RECOGNISED AS WORLD LEADING MACHINES
THEIR SPECIFICATION, RELIABILITY AND PERFORMANCE CONTINUE TO BE RECOGNISED AS WORLD CLASS
High speed turning plus a powerful live spindle and C axis for rotary milling and drilling. The long cross rail enables tool pick up from two 18 pocket tool magazines |
This machine has a very sophisticated specification with a tooling package of very high value. It was ordered to a specification to enable the manufacture of high precision large marine gears using an extensive range of angular drilling, tapping and milling heads. This tooling package was used in addition to the machine’s high precision turning capability to enable a one stop process, apart from gear cutting. The high quality turning capability eliminated bore grinding of the hub. The tooling package includes 5 adjustable angle Capto driven heads as seen in the film and below Two 18 pocket heavy duty tool magazines to incorporate 36 tools or attachments The original cost of this CAPTO tooling package was £139,000 |
This machine is available following the closure of a major company in the steel industry. The structural condition is very good, the guideways show minimal wear. Our new machine build experience and our servicing and rebuild experience of Millenniums enable us to refurbish this machine to a very high standard and offer it in very high quality, cost effective formats to suit the users requirement
About the Millennium
When first introduced the Webster & Bennett Millennium range was immediately accepted as world leading series of vertical turning centres that were purchased by some of the best known world leading companies in the businesses of aero engine manufacture and repair, oil and gas components, gear drives, power generation, rail and defence rocket production
The Millennium is world class in its major structures and capabilities and it is a cost effective investment to refurbish the structures and modernise the CNC, electrics, hydraulics and pneumatics
The result will be a machine with basic structures of a higher standard than is found in most machine tools built today and this will be coupled with the latest available operating facilities If you can find the equivalent new machine today the cost will be several times more To see the whole Millennium range in action please take a look at this 6 minute film https://www.youtube.com/watch?v=8goOg-CrRS0&feature=emb_logo
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Click here to see the features and capabilities of this specific machine on film
CAPACITIES and SPECIFICATION
4 Jaw steel chuck, ………………………………………………………………………………..1800mm
Maximum Turning Diameter………………………………………………………………… 2200mm
Maximum Swing ……………………………………………………………………………….….2200mm
Table Speed Range ………………………………………………………………………….1 – 440 rpm
Minimum Table Speed at Full Power ……………………………………………….……..29 rpm
Main Drive Motor ………………………Siemens 55kW AC (75kW on 40% duty cycle)
Maximum Cutting Force …………………………………………………………………………..50kN
Feed Force for Turning ‘X’ ………………………………………………………………………..30kN
Maximum Table Torque ……………………………………………………………………24556 Nm
Maximum Table Loading ……………………………………………………………..…….12,000 kg
Maximum Height under Cross Rail …………………………………………………….2000 mm
Minimum Height under Cross Rail ……………………………………………………..….600mm
Maximum Cutting Height above chuck face ………………………………………..1840 mm
Vertical Travel of Cross Rail …………………………………………………………………1400 mm
Cross Rail Precision Latching Increments ……………………………………….………200mm
Maximum Cross Rail Positioning Speed ………………………………………..1000mm/min
Full length X axis travel enables ram to pick up tools from both 18 tool ATC magazines
The Live spindle ram – Tool clamping – the hydraulic ram nose has 4 powerful pistons to locate and clamp all types of toolholders, tooling and attachments very precisely and very securely
Forged steel ram section …………………………………………………………… 250 x 250mm
Z Axis ram stroke.……………………………………………………………………..…………1500mm
Feed Force ‘Z’ ……………………………………………………………………………………………45 Kn
Ram Live Spindle Power…………………………………………………. 18.5kW (22kW at 50%)
Ram Live Spindle Speeds……………………………………………………………….… to 4000rpm
Live spindle taper………………………………………………..50 taper – DIN6987/ISO7338/1
C axis – for powerful rotary contour milling
- Accuracy………………………………………………………………..……… +/- 5 arc seconds
- Repeatability……………………………………………………………….+/- 2.5 arc seconds
- Table Speeds for rotary milling ………………………………………….…0.1 – 3.1rpm
- Torque ………………………………………………………………………………………6.25KNM
- Table Speeds for positioning – drilling, right angle milling etc.0.1 – 6.5rpm
X and Z Axis Feed rates …………………………………………………………….0 – 5000mm/min
X and Z Rapid traverse speed ………………………………………………………12000mm/min
Positional Accuracy X and Z axis…………………………………….…. +0.0075mm/1000mm
Repeatability …………………………………………………………….…………..0.005mm/1000mm
TWO 18 pocket AUTOMATIC TOOL CHANGERS. Each has following capacities
Maximum individual tool weight……………………………………………………………..… 55kgs
The weight on each ATC should be balanced and total should not exceed…656kgs
Maximum tool length (may vary according to final installation)………………. 650mm
Each pocket can be set up for either a turning tool or a live spindle tool or attachment
Other information
COOLANT | Capacity | 640 litres |
| Flow | 25 litres/minute |
| CONVEYOR | A powerful linear conveyor is supplied |
| ELECTRICAL SPEC | Voltage | 415 |
| KVA | 276 | |
| Frequency | 50Hz | |
| Phases | 3 + earth |
| WEIGHT | Machine structure excluding guarding, swarf conveyor and tooling | 52000kgs
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SIEMENS 840D CNC Powerline
Since it’s introduction 840D has been regarded as the best CNC for complex machine tools.
Perfect for turning, milling, drilling and grinding on the Millennium
The system will be upgraded to continue to provide a very satisfactory performance.
We combine it with a new cabinet and new wiring, for maximum reliability performance
THE NEW GUARDS
The guard designs provide two options – i) standard style 3000mm high open top or ii) new design to totally cover the machine to protect contamination of the cutting zone and equally to prevent contamination of the working environment outside the machine. Photos below of similar guards taken during a recent installation
Benefits of ii) the total covering guards
Installation, commissioning and maintenance is made safer when working at height because we have engineers platforms built into the guard frame (see first guard photo below)
The door system is in two parts
The lower doors are the operators safety doors – full protection by the structure and interlocks The lighter upper doors require to be opened only when loading or unloading components
PRICING
For the machine refurbished and upgraded as outlined above and tested with full functions and operating tests in VTT, dismantled and loading to customers transport plus 12 months warranty if installed commissioned by VTT. Machinery Safety – Declaration of Conformity according to which country the machine is installed ……………………………………..………………………………………………………..£475,000.oo
Additions for guarding – option i) £40,000. option ii) £65,000
Transport, installation and commissioning
The method of transport will depend very much on the destination – 4 x 12m trailers or 40ft open top containers.
Installation onto a foundation prepared by others and commissioning can be budgeted at £40,000 plus travel and accommodation for 4 engineers
