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- •Текст №2.
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- •Текст №3.
- •1. Прочитайте текст и найдите ответы на следующие вопросы:
- •Текст №5. «cnc lathe offers large bore, high torque option».
knew
we had found our solution. Even more so when the machine's excellent
value for money high-specification and support were added to the
equation.’ This latter is a point that Beer is keen to elaborate.
’Ward CNC has been first class. The machine was delivered and
installed on time, and commissioning and training went without
hitch.
I
have to say that since then (August 2004) the Kia has been very
reliable.’ Also significant is the fact that the machine is
arranged in a production flowline, supplying parts to machining
centres across a six-day, double shift work pattern.
’It
means that reliability and speed of manufacture are key - and the
power of the machine in combination with high technology insert
grade tooling has enabled us to reduce cycle times by around 12 per
cent.’ With a 22/26kW spindle motor producing 3,000 rev/min, the
SKT300 has a swing over the bed of 750mm, a maximum turning length
of 720mm and a 90mm diameter bar capacity. Feed rates are 20m/min
and 24m/min in X and Z axes, respectively. Featuring a 12-tool
turret and a two-stepped geared headstock for high torque, heavy
cutting - and optional programmable tailstock - the Fanuc-controlled
SKT300 is designed to minimise non-cutting time. Its singlepiece
cast construction boasts a three-layer solid bed and box ways on all
axes. The machine is fitted with a Q-Setter for quick tool
compensation as standard. ’The Kia has been excellent,’
concludes Beer. ’We have no complaints, and I wouldn’t hesitate
in recommending the machine.’
Прочитайте
текст и найдите ответ на следующей
вопрос: What
peculiarities has a slant bed CNC Lathe?
7
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«Machining
diversification quadrupled profits».
Within
a year of diversifying from prismatic machining into providing a
small mill/turned parts capability, a subcontractor is not only
doubling turnover, but it is quadrupling profits.
Within
just 12 months of diversifying his highly successful prismatic
machining company into one providing a small mill/turned parts
capability as well, managing director Mick Purton has transformed
Crown Precision Engineering.
Now
this Milton Keynes based subcontractor is not only doubling
turnover, more important it is quadrupling profits and is seeing a
host of new customers in the USA, Mexico and throughout most of
Europe all through investing in two Citizen M32 CNC sliding head
autos from NC Engineering of Watford. And, such are the levels of
productivity now being achieved that even more work is being won on
the back of being able to reduce machining hourly rates by almost a
quarter. Like many time-served apprentices working for someone else,
a sense of ‘could do better’ led Mick Purton to set up his own
business. Thus was born Crown Precision Engineering.
Early
days led him to concentrate on the mould and die sector, producing
mould tools for the plastics and rubber industries. However, towards
the end of the 1990s he was looking at a business where work in the
UK was increasingly disappearing offshore which left him with some
hard thinking to do. He explains: ‘We knew we had to source work
from new sectors and the only way we could do this was to modernise.
Despite the tough economic climate, we replaced our 12 manual mills
with six CNC vertical machining centres over the course of two
years.’ This adventurous move was not only timely but also
important as it paid dividends with the company
8Текст №3.
securing
contracts from the aerospace, electronics and general commercial
sectors.
These
new customers then began offering Crown Precision the chance to
quote for turning work, which Purton either produced in-house or
passed on to outside companies. ’We really felt we were beginning
to miss the boat regarding CNC turning,’ he says and follows on to
outline: ‘Giving contracts to another company is fine but of
course it significantly reduces profit ratios and margins and you
are not really in total control of the projects, so we decided it
was time to change.’ To get the diversification operation rolling,
Crown hired the services of its first ever sales engineer, to source
work and feed the business.
Within
just six months, the company bought its first Citizen M32, 13-axis
CNC sliding head lathe from NC Engineering. Purton explains: ‘Our
new salesman had plenty of Citizen experience so I guess they were
always going to be the favourite. But we did our homework and had a
good look at other machines. We found Citizen were very strong
amongst the small turned parts sector, their performance rating was
very good and there were no apparent historical problems with either
machine, quality or performance. Importantly, NC Engineering was
able to provide us with the support we so obviously required.’ The
purchase of the M32 was on the back of an export contract to supply
large quantities of precision washers.
Required
at rates of 25,000 a month, and predicted to last for the next four
years, this contract was the decider for Crown to make the plunge.
’The revenue this contract would generate meant we could buy the
M32 and draw back some of the work we were subcontracting,’
explains Purton. ’It was also an ideal job to start our CNC
turning learning curve. Although tolerances were not over tight at
+0.05 mm, the surface finish
9
requirements
were highly critical, this was why we needed the high surface speed
capability of the M32.
j
While
the part is relatively simple, once set, the machine just runs and
runs. As the labour content is minimal this makes it very
competitive.’ No sooner had Crown installed its first Citizen M32
when the company won more CNC turning work, this time from the
autosport industry producing a specialised collar, as well as a
contract for a family of parts for a tier one system and component
supplier to the aerospace industry.
So
at the recent MACH 2004 exhibition at the NEC, Mick Purton placed
his second order for a 13-axis M32, this time including the Cool
Blaster programmable 2,000 lb/in2 high pressure coolant unit with
vapour extractor. Purton explains his decision to add Cool Blaster,
was to improve performance when machining, in particular, the
aerospace parts made from SI43, a corrosion resistant alloy steel
comprising chromium, nickel, copper and molybdenum.
’S143
doesn’t chip at all well and causes real headaches with ‘bird’s
nests’ of swarf,' he maintains. Also key to Crown’s requirements
was that the 13-axis M32 machine features main and subspindles able
to produce parts using three tools at the same time. This ensured
that many of the complex parts it was now making were produced in a
single cycle enabling the company to further improve its
competitiveness, lead times and ensure high levels of consistency.
For instance, while an outside diameter is turned with a gang tool,
it is possible to machine internal features from the turret.
For
front and back machining, the Citizen M32’s 10- station turret has
power-driven tools in every position and with multiple tool holders
and half-indexing capabilities, enables the turret to hold up to 80
tools. As a result tools can be left ‘as set’ in the machine
which significantly speeds changeovers and the turret can also
fulfil functions other than cutting, such as part
10
handling
and automatic in-process gauging of tools as well as critical
component features, if required.
The
two Citizen machines now process eight different components for
Crown, plus the family of 16 aerospace parts. All these parts leave
the М32s
ready for dispatch which also includes some very tricky features
such as 45 deg angle holes. One of the aerospace parts produced in
relatively small batches is a collar that supports a race of ball
bearings. The manufacturing process begins by using a U-drill to hog
out the bore, for finish machining.
The
outside diameter is then rough turned before the holes required to
support the ball bearings are spotted around the circumference of
the part. The bore is then completed before a ballnose cutter is
used to finish the circumferential holes to a precise depth of
+0.02mm in order to ‘seat’ the bearings. The outside diameter is
then finished before the part is picked-off and back- end operations
performed which include further boring, threading, milling and
drilling.
’Since
the installation of the Citizen machines we have become really adept
at programming and have managed to reduce the cycle time for this
part from an initial 15 mins to just 9 mins.’ Reflecting he says:
‘Machining time using manual methods would have taken at least 50
mins. This shows how beneficial the Citizen machines are to our
business.’ And, he makes a big point over reliability.
Both
machines have chalked up an uptime of 100 per cent since
installation. This is leading him to expand on the current working
method and produce the original washer unmanned overnight. ’We are
planning to go this way for all of our components very shortly which
will further improve our competitiveness,’ he maintains.
Purton
is also seriously targeting other new markets such as
telecommunications and medical in order to initiate further
11
growth
and the business plan incorporates moving from the present leased
premises to its own facility within two years.
By
then, the target is to have six sliding head machines installed. By
his own admission Purton says 2000-2003 were the hardest years he
has ever known in the industry, but investment has meant Crown is in
a relatively comfortable position.
’We
have expanded our horizons by investing, built our reputation and
the reward is that we are extremely busy.’ He concludes: ‘Sitting
at the centre of this success are the two Citizen
Изучите слова к тексту: quadruple - четырехкратный mould - форма, литье
die - винторезная головка, пресс форма
tough - жесткий, прочный
tolerance - допуск
finishing - чистовая обработка
plunge - погружение
plunger - плуннсер, шток, толкатель
turret - револьверная головка
Найдите в тексте предложения с причастием, переведите их.
Прочитайте весь текст, выпишите все слова, относящиеся к описанию станка.
Представьте, что Вы участник выставки и представляете эту фирму. Расскажите о преимуществах вашего станка.
Составьте аннотацию и реферат текста.
12
Т
екст №4.
«Lower
cost lathe turns IDs within +/-2
micron».
A
wealth of ‘high-tech’ features in universal CNC lathes include
top-of-the-range Fanuc or Siemens control with graphical user
interface and 3D real-time simulation.
The
latest NEF universal lathes from DMG provide top performance from a
wealth of high-tech features at an unbeatable price.
Successive
generations of the NEF brand have brought users excellent value for
money and with the new 400 and 600 range, whose prices start at just
GBP 31,000, this tradition continues.
No
other entry-level lathe in this price bracket can match these new
models for their quality, reliability and profit potential. This
price includes Fanuc 210i CNC Control with Manual Guide, manual 3
jaw chuck (200mm), 8 station turret and tailstock with life centre.
Examples of the features that are atypical in this class of machine
include the pivoting DMG SlimLinePanel with 15in TFT screen feature
a top-of-the-range Fanuc or Siemens control with graphical user
interface and 3D real-time simulation.
Rotational
speeds are up to 4,000 rev/min with up to 24kW of drive power and
720Nm torque. Not to be found on any other entry-level lathe is the
30 deg inclined four-track bed designed for optimal chip clearance
and excellent accessibility. High flexibility and productivity are
assured thanks to a large working area and features such as a
traversable steady rest and high-speed, 8-station turret. As a
result chucking components up to 55mm and shaft sections up to
1200mm in length can be machined in the shortest time. The digital
drive on the main spindle and dynamically stable linear guideways
make a significant contribution to the high precision and excellent
13
growth
and the business plan incorporates moving from the present leased
premises to its own facility within two years.
By
then, the target is to have six sliding head machines installed. By
his own admission Purton says 2000-2003 were the hardest years he
has ever known in the industry, but investment has meant Crown is in
a relatively comfortable position.
’We
have expanded our horizons by investing, built our reputation and
the reward is that we are extremely busy.’ He concludes: ‘Sitting
at the centre of this success are the two Citizen
Изучите слова к тексту: quadruple - четырехкратный mould - форма, литье
die - винторезная головка, пресс форма
tough - жесткий, прочный
tolerance - допуск
finishing - чистовая обработка
plunge - погружение
plunger - плуннсер, шток, толкатель
turret - револьверная головка
Найдите в тексте предложения с причастием, переведите их.
Прочитайте весь текст, выпишите все слова, относящиеся к описанию станка.
Представьте, что Вы участник выставки и представляете эту фирму. Расскажите о преимуществах вашего станка.
Составьте аннотацию и реферат текста.
12
Текст
№4.
«Lower
cost lathe turns IDs within +1-2
micron».
A
wealth of ‘high-tech’ features in universal CNC lathes include
top-of-the-range Fanuc or Siemens control with graphical user
interface and 3D real-time simulation.
The
latest NEF universal lathes from DMG provide top performance from a
wealth of high-tech features at an unbeatable price.
Successive
generations of the NEF brand have brought users excellent value for
money and with the new 400 and 600 range, whose prices start at just
GBP 31,000, this tradition continues.
No
other entry-level lathe in this price bracket can match these new
models for their quality, reliability and profit potential. This
price includes Fanuc 210i CNC Control with Manual Guide, manual 3
jaw chuck (200mm), 8 station turret and tailstock with life centre.
Examples of the features that are atypical in this class of machine
include the pivoting DMG SlimLinePanel with 15in TFT screen feature
a top-of-the-range Fanuc or Siemens control with graphical user
interface and 3D real-time simulation.
Rotational
speeds are up to 4,000 rev/min with up to 24kW of drive power and
720Nm torque. Not to be found on any other entry-level lathe is the
30 deg inclined four-track bed designed for optimal chip clearance
and excellent accessibility. High flexibility and productivity are
assured thanks to a large working area and features such as a
traversable steady rest and high-speed, 8-station turret. As a
result chucking components up to 55mm and shaft sections up to
1200mm in length can be machined in the shortest time. The digital
drive on the main spindle and dynamically stable linear guideways
make a significant contribution to the high precision and excellent
13