CNC Lathe

Details

turning diameter:

1300 mm

turning length:

9000 mm

total power requirement:

110 kW

Y-axis:

210 mm

Distance between centers:

10000 mm

centre height:

750 mm

turning diameter over slide:

820 mm

Diameter over the bed with covers:

1300 mm

Range of spindle speeds:

5-1200 min-1

Max. permissible torque:

8000 Nm

Diameter of the spindle bore:

120 mm

Diameter of the spindle on the front bearing:

220 mm

spindle taper:

130 metric

steel cross cut max.:

40x40 mm

Width of the top guide of the support:

545 mm

Tailstock guideway width:

455 mm

Width of the bed guideways:

1075 mm

Width of the guide of the cross slide:

600 mm

Width of the bed at the foot:

1085 mm

Max. Weight between centres without steady rest:

12000 kg

Max. weight between the centres with steady rest:

16000 kg

Max. Weight flying (300 mm in front of the faceplate):

3000 kg

Diameter of the tailstock quill:

200 mm

Travel of the quill from the tailstock:

400 mm

Tailstock centre cone:

6 MK

Transverse displacement of the tailstock in 2 directions:

40 mm

Travel speed of the tailstock:

2500 mm/min

Diameter of the faceplate:

1000 mm

Dimensins of the machine (LxWxH):

13.300 x 3.000 1.750 mm

Weight of the machine approx.:

36000 kg

Features

Actual control SIEMENS SIN840Dsl incl. software package Operate
Operator Panel OP15
Absolute measuring systems for X-,Y- and Z-axis
Digital servo motors for the X,Y,Z and C axis
C-axis incremental
1000 mm diameter faceplate with 4 reversible jaws
Tailstock electrically movable and hydraulically clamped
2 pieces steady rests operable via control unit
1 piece C shape steady rest with removable top part
Six pieces angled driven tool holders
Hydraulic three jaw chuck
Several tool tapers
Chip conveyor
Air conditioned control cabinet
Electronical hand wheel

Description

This lathe and milling machine from the make LEOPOLDO PONTIGGIA manufactured in 1992 was extensively overhauled in 2018 and is in very good condition! Also to be emphasized is the extensive scope of delivery and the many accessories!

In the course of the overhaul in 2018, the following work was carried out in the core of the machine:
Installation of a new SIEMENS control type SIN 840Dsl, renewal of the E-equipment, geometric and mechanical partial overhaul on the machine bed, cross support, steady rest support, main spindle gear, tailstock. The hydraulic system, cable chains and chip management were also replaced or renewed.

This turning and milling machine is designed for machining of very heavy workpieces. The highly dynamic SIEMENS 840D sl (solutionline) control with the Operate operating software supports the operation of the lathe with graphic help screens and animated elements. The operator panel OP15 with a 15" TFT screen and a machine control panel MCP483C (19" wide with mechanical keys) impresses with simple functionality. The five SIEMENS 1FK7 servo motors installed are characterized by high overload capacity, robustness and compactness. The aforementioned components in combination with the absolute measuring systems open up a very wide range of performance in production.

Machine bed:
-Strong bed casting of original Meehanite cast iron.
-Support and tailstock guideways induction hardened and ground. High hardness and low porosity value
-Fribbed, aveolar structure, very high stiffness to avoid vibrations
-The bed is prepared for the installation of a chip conveyor, allowing the rapid clearance of chips and coolant.
-Third guideway for the support; it absorbs the pressure during the machining of large workpieces
-Fixing in the foundation with suitable leveling groups and fixators
-The support and the tailstock run on independent guideways; no interference during their run.

Headstock
-Richly dimensioned and massive structure that ensures high torque
-2 spindle speed ranges, with automatic engagement. In each range, the stepless speed is controlled by the numerical control.
-Front bearing of spindle angular contact ball bearing, center bearing double row roller bearing.
-All gears made of hardened and ground Cr.Ni.steel
-All shafts dynamically and statically balanced
- Automatic lubrication of all moving parts

Support:
-The support runs on the bed track, and has 4 adjustment bars with automatic lubrication

Further details of the overhaul work:
- Modernization of all axes to a new control system from SIEMENS type SIN 840Dsl, max. axes/spindles.
Control panel with operator panel OP15
15" TFT screen
Machine control panel MCP483C,19" wide with mechanical keys
Software package Operate
PLC components SIMATIC S7-300
-digital servo motors for X,Y,Z and C axis (make SIEMENS 1FK7)
-completely new air-conditioned control cabinet
- New measuring systems (absolute) for the X-,Y- and Z-axis
- New measuring system for the spindle and C-axis incremental
- New documentation incl. circuit diagrams, PLC program, etc.
- Sealing air supply unit for the measuring systems
-Safe monitoring of axis speeds and spindle speeds
Renewal of the electrical equipment
-Replacement of the machine wiring
-Renewal of the wiring to the built-in parts on the machine
-Renewal of the terminal boxes on the main support

Geometric and mechanical part overhaul:

Machine bed
- Mobile milling of the undergrip track (central guiding track in the direction of the tailstock)
- Renewal of the lower steel strip (support track)

Cross support (X-, Y-, and Z-axis)
-renewal of all sliding supports in the X, Y and Z axes (gluing, milling and scraping)
-Renewal of all wedge bars and lower grips with new glide pads in Bornzekeke new scraping in
-inspection of the metron clamps in the lower handles and wedges, change of metron washers
- Repair of bed lubrication, compact pump unit SKF/ Vogel, lubrication lines and metering valves
-Inspection of the Z-axis drive (master-slave) incl. installation of the new servo motors
-repair of the KGT of the X-axis incl. new end bearings

Steady rest support
- Renewal of all slide linings in the X-, Y- and Z-axis (gluing, milling and scraping)
- Renewal of the wedge bars and lower grips with new sliding linings incl. new scraping in
- Repair of bed lubrication, compact pump unit SKF/ Vogel, lubrication lines and metering valves
-inspection of the metron clamps in the lower handles and wedges, change of metron disks

Main spindle gearbox
renewal of the wiring
replacement of the defective valves
Hydraulics resealed
Maintenance of circulating lubrication

Tailstock
-renewal of the tailstock center punch shaft bearing compl. incl. gasket
Hydraulics
-Replacement of the fixed piping with new flexible piping in the cable tunnel
-maintenance of the hydraulic system and cleaning
Cable chains
-Renewal of the cable chains
- 2x for the steady rests in covered form
Chip management
-New chip conveyor of similar design and size as the previous one from AXA Anlagenbau