| NOTE: |
| This machine is discontinued - this page is here for
information purposes only. Please click here to
see if we have any L20-VII machines for sale in our pre-owned department
or take a look at the current equivalent of the L20-VII, the L20-VIII. |
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| CITIZEN
L20-VII |
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| Into
the 21st Century With Citizen |
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The
CINCOM L-series has been specially developed for high-precision manufacture
of simple and complex parts in medium to large batch sizes. It offers
all-round versatility with its many variants, flexible options and
extremely short setup times. All axis movements and even the opening
and closing of chucks are implemented by servo motors. As a result,
actuation times are reduced by around 50% by comparison with conventional
CNC lathes which rely on hydraulics/pneumatics for auxiliary functions.
Built-in servo motors require less space and minimise the occurrence
of faults. |
- All
round CNC sliding head turning centre for up to 20 mm diameter.
- Maximum
stability and operational life.
- Fully
CNC servo-controlled, eliminating hydraulics and pneumatics.
- Fast
cycle times with considerably reduced setup times.
- Maximum
production with low capital input for a rapid return of investment.
- Good
swarf disposal.
- Y-Axis
as standard
- Long parts adapter
- Parts conveyor
The main and sub-spindle
drives are equipped with highly dynamic built-in motors. The main drive,
for example, accelerates to the maximum speed of 10,000rpm is less than
1 second. This is an extremely important advantage when positioning the
spindle for milling or when changing the direction of rotation for threading.
| Main
Spindle Drive |
Sub-spindle
Drive |
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All movements, including
chucking, are carried out by
means of intelligent, digital AC servos. Elimination of hydraulics and
pneumatics dramatically increases reliability and minimises maintenance
requirements.
Due to the extremely
compact design of the drive technology, no additional electrical cabinet
is required. All components are integrated into the machine.
By incorporating this
advanced technology, limit switches are no longer required and it is not
necessary to zero return axes when switching on the machine.
For complex external
machining there are 6 turning tools with 12x12mm tool shank available.
In addition, there are 4 driven tools and 3 tools for front machining.
The L20-VII is equipped with sub-spindle and a drilling tool post with
3 stations. Numerous other tool combinations are available as options,
so that for example, even eccentric drilling and milling operations on
the front or the back side of the workpiece are possible.
| Tool Layout |
Sub-spindle |
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This configuration,
which includes a "Y" axis on the main tool platen as standard,
makes the L20-VII an extremely versatile and powerful machine tool.
The L20-VII provides
a total of 16 tools:
- 6 (7) turning tools
- 4 driven tools
- 3 tools for front
machining
- 3 tools for back
machining
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| The
CNC Control Mitsubishi M6 with 64-bit processor (Windows 95) was
specifically developed for the Cincom L20-VII.
The storage
capacity for the present workpiece program is normally 8kB (optional
upgrade to 16/32kB) The complete control system is integrated into
the swiveling operation panel. A 10.4" LCD colour display provides
for a well-structured and visible monitor picture. The patented
superimposed control permits he simultaneous internal and external
machining of the main spindle with different feed rates.
The fitted
hand wheel enables safe and easy program prove out. Potential collision
points can be recognised and avoided, and all movements can be optimised.
Through the
Windows user interface and the extensive range of functions, programming
is simplified to enable a fast-track learning curve even for first
time users |

Click
here to see full size |

N.B.
For guidance only - detailed footprint available on request.
A
downloadable brochure for this machine in Adobe PDF format can be found
on our brochure downloads page.
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