FIVE NEW MILL-TURN CENTRES FROM STAR

beaverswimmingAI and Robotics

Nov 14, 2013 (3 years and 8 months ago)

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P R E S S R E L E A S E



MACH 2012

Pre
view Information Stand
: 5350



FIVE
NEW
MILL
-
TURN CENTRES

FROM STAR


Of the nine CNC lathes on the Star GB stand

this year
, f
our

sliding
-
headstock mill
-
turn centres
and

a fixed
-
head lathe
are being shown
f
or
the first time
ever
at a MACH
exhibition
.


All
of the multi
-
axis machines
are designed for long periods of
unmanned production and high levels of consistent accuracy. A large
range of tooling options and additional equipment allow the provision of
complete

machining cells to suit users' specific requirements.


It is noteworthy that, although the Star range spans
10,
16, 20, 32 and
38 mm bar capacities, five of the nine lathes on show will be
20 mm
machines, as this size
accounts for around 60 per cent of sa
les in the
UK

and Ireland
.


A new feature of the Star stand
, the company's largest ever at 400
square metres,

will be the inclusion of interactive audio
-
visual stations
.
A

touch screen interface
on each

will allow visitors to interrogate a
database of info
rmation on all
Star
sliding and fixed head lathe models
and access video footage of the machines in action.




One

of the new

machine
s, the

SW
-
20

slider
with 11 CNC axes
,

made
its European debut last September at EMO 2011.

With its two tool
platens in fro
nt of and behind the spindle centerline,
th
e 20 mm
capacity machine is ideal for balanced turning, milling and drilling
operations from either side of the bar, making it especially useful when
processing slender components that could otherwise be easily
de
flected.


The Fanuc 31i Model B5 control allows high speed
production
and
improved

accuracy for up to 5
-
axis simultaneous machining. It is on a
swing
-
out support for easy access when the operator is working in the
machining area.



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more





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2
-



An 8
-
station, rear
facing
tool post

with vertical movement in Y works in
conjunction with a counter spindle having X
, Z and C

motions to
complete the most complex backworking operations during single
-
hit
manufacturing.


The
SB
-
20E

is the most capable
low
-
cost
,

entry
-
level

sliding
-
head
lathe to date from Star
,

ideal for manufacturing components of medium
complexity.


The
20 mm bar machine

has a
four
-
spindle cross
drilling unit
, high
driven tool power and

lateral

motion (XB)
on the
counter spindle in
addition to

its standard ZB m
ovement along the spindle centre
line.

E
xtensive machining on the reverse of a parted
-
off component is
therefor
e possible in conjunction with

four back

working tools.




The result is a 7
-
axis CNC lathe that allows scope for manufacturing
more co
mplicated parts

than earlier SB models
.
In addition to the cross

working and back

working tools, there are six turning tools in the gang
tool post and four tools facing both front and back in a sleeve holder.
35 m/min rapids guarantee short non
-
cutt
ing times.


New also at MACH will be

a
smaller

early
-
entry lathe in the
SB

series,

the 16 mm capacity
SB
-
16E
II
. It also has XB and ZB movement
s

of
the counter spindle
and four back working tools. However, it

differs
from the larger machine in that it has
two live cross working
tools plus a
third position. It

can accept either an additional
cross driven tool, or a
three
-
spindle counterface tool for both front and rear driven tool
applications
,

or a
four
-
spindle drilling unit for front and back working.


Th
e

32 mm capacity Star

SR
-
32
J
N

slider
will be shown for the first time
in recently uprated configuration with five
driven
cross working tools
and a

Fanuc 31i Model B

control

having an ergonomic, swing
-
out
support for enhanced performance. The lathe
does not

have a
revolving guide bush, greatly reducing remnant length and
lowering

production costs
, especially

when machining shorter parts.


With
its

six
-
station platen and extensive

front
and back
working
tools
,

the machine is capa
ble of high levels of producti
vity
.

Front off
-
centre
machining

and angular drill
ing

attachments are
available
.
The weight,
robust construction and reliability of the SR
-
32JN
promote high

accuracy
,

24/7
machining.





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more
-

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3
-


The Star
SF
-
25

multi
-
tasking
, B
-
axis

mill
-
turn cen
tre,
one of the
manufacturer's first two fixed
-
headstock lathes, will
make
its

first
appearance at a MACH show
.
The 9
-
axis machine

is

a

compact, 25
mm capacity
turning centre intended for manufacturing complex
parts
in short cycle times, in particular for
the
medical, aerospace and
automotive
industries
.

A video showing the machine's capabilities may
be seen at:
http://www.youtube.com/watch?v=_nYBqUFN5iU


It
is equipped with a
live,
10
-
station
,

X/Y/Z
turret
below the
7,000 rpm
main
spindle
. Above is an addi
tional tool carrier in the form of a
20,000
rpm tool spindle with
110
-
degree
B
-
axis rotation
,

fed from

a

24
-
station
automatic tool changer.

The tool spindle also has X, Y and Z
movements and a
C
-
axis
.



Orientation of
the

spindle allows a
static

tool to pe
rform

balanced

turnin
g

together

with the turret
, if needed
.

However, the main function
of the

tool spindle

i
s
for
prismatic
ally

ma
chining the front and sides of
a

c
omponent.


It

is also capable of
accepting a rotary workholding unit,
swinging down
to the h
orizontal to oppose the main spindle
and

synchronous
ly

pick
ing
up

a parted
-
off

component. Reverse end turning and powered
machining operations
with the part rotating or positioned
are then
completed in conjunction with the turret, allowing all six sides of

a

part
to be accessed.


Up to three

static or driven

tools can be mounted in each turret station

and there is provision for rear working tools to access the front end of


components. It means that the overall number of cutters in the working
area can be

very

large, enabling the production of complex parts in one
setup.
A spindle chiller and high pressure coolant delivery are
standard.
Control is by the
capable Fanuc 31i
-
5A
.


Star's flagship, 38 mm capacity
ST
-
38

sliding
-
head

lathe

will feature

under powe
r

as a comprehensively equipped turning cell with bar
magazine, high pressure coolant, mist extraction and full swarf
management.
The machine made its debut at the last MACH show.


Its 6 mm advantage in maximum bar diameter over
the largest
conventionally
-
sized sliders allows more companies to take advantage
of the technology, with its faster cycle times, greater accuracy and
higher productivity co
mpared with fixed
-
head turning.


The mill
-
turn centre has 12 CNC axes shared between two C
-
axis
spindles and th
ree live turrets
for one
-
hit machining of highly complex
components.
X and Z axis rapids are 30 m/min, resulting in short idle
times.


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more
-

-

4
-


The ST
-
38 incorporates
Star’s advanced motion control system for
programming

relatively simple turning op
erations
, resulting in

very high
speed

cycles on the machine.

For parts involving a combination of
simple and complex routines, the complete cycle can be made up from
both motion control programming and traditional ISO code.


Completing the Star line
-
up a
t MACH will be the

early
-
entry
SR
-
20
J

with guide bush, its sister lathe
SR
-
20JN

without guide bush fitted with

a bar feed for live demonstrations, and the popular, mid
-
range
Star
mill
-
turn slider
,
SR
-
20R
II
I
.



Contact:


Star Micronics GB Limited, Chapel St
reet,

Melbourne, Derbyshire DE73 8JF.

Tel: 01332 864455. Fax: 01332 864005.

E
-
mail:
sales@stargb.com

Web site:
www.stargb.com