1. General Scope

The scope is to supply, install and commission a CNC Vertical Turning lathe as per the specification furnished hereunder.

  1. Basic Machine Specifications

Sl. No. / Description / Value / unit
2.1 / Features
2.1.1 / Type / Vertical Turning LatheRam Type without live tools
2.2 / Working Range
2.2.1 / Maximum turning & facing diameter / 900
2.2.2 / Maximum swing diameter / 900 / mm
2.2.3 / Maximum turning facing Height / 600 / mm
2.2.4 / Minimum Work piece Weight / 1000 / kg
2.2.5 / Minimumdiameter for through boring / 300 / mm
2.3 / Axes
2.3.1 / Horizontal Travel – X Axis (minimum) / 800 / mm
2.3.2 / Vertical Travel – Z Axis (minimum) / 800 / mm
2.3.3 / Rapid Traverse Rate – X Axis (minimum) / 15 / m/min
2.3.4 / Rapid Traverse Rate – Z Axis (minimum) / 15 / m/min
2.3.5 / Cutting feed Rate (nominal) / 10 / m/ min
2.3.6 / Guide way X Axis / Hardened & ground or Linear motion
2.3.7 / Guide way Z Axis / Hardened & ground or Linear motion
2.3.8 / Axes feed motors type / AC Servo
2.3.9 / Power of X axis feed motor / Please specify / kW
2.3.10 / Power of Zaxis feed motor / Please specify / kW
2.3.11 / Feedbackelement / Encoder / Type
2.3.12 / Counter balance for Z axis / Hydraulic
2.4 / Table/ Chuck
2.4.1 / Table/ Chuck size (minimum) / 800 / mm
2.4.2 / Through bar capacity / Please specify / mm
2.4.3 / Motor Power, cont/ 30 min. (S1/S2) / 22/30 / kW
2.4.4 / Speed Range Infinitely Variable (Low gear) / 0-250 / rpm
2.4.5 / Maximum Torque - S1 (Low gear) / 3000 / Nm
2.4.6 / Speed Range Infinitely Variable (High gear) / 250-900 / rpm
2.4.7 / Maximum Torque - S1 (High gear) / 800 / Nm
2.4.8 / Motor type / AC Servo
2.4.9 / No of T slots and size / Please specify
2.4.10 / Clamping jaws / Four independent clamping jaws on table
2.5 / RAM
2.5.1 / Ram Size / Please specify / mm
2.5.2 / Spindle Nose / Pease specify / Type
2.5.3 / Tool clamping and unclamping / Hydraulic
2.6 / Automatic Tool Changer
2.6.1 / No of tool positions / 16 / Nos.
2.6.2 / ATC type / Please specify
2.6.3 / Air purging through spindle / Required, please provide the details
2.7 / Lubrication and Coolant
2.7.1 / Lubrication- Spindle Bearing / Maintenance free lubrication
2.7.2 / Lubrication- Guide Ways & Ball Screw / Centralized, automatic with fault detection
2.7.3 / Coolant tank capacity / Please specify / Litres
2.7.4 / Coolant pump motor / Please specify / kW
2.7.5 / Coolant pressure / 6 / bar
2.7.6 / Coolant delivery (nominal) / 60 / Lpm
2.7.7 / Through coolant / Required, please provide the details
2.8 / Electrical/ Pneumatic Parameters
2.8.1 / Electrical Power Supply- Voltage / 415 ± 10% / V
2.8.2 / Frequency / 50± 1% / Hz
2.8.3 / Electrical power Requirement / Please specify / KVA
2.8.4 / Built- in AC for control panel / Required
2.8.5 / Compressed Air Requirement –std / Please specify
2.8.6 / Compressed Air requirement – for options / Please specify
2.8.7 / Machine Size / Please specify / mm
2.8.8 / Machine Weight / Please specify / kg
2.9 / Guarding
2.9.1 / Localized guarding for ball screws and guide ways / Required
2.9.2 / Full guarding with doors and see through panels
2.10 / Accuracy
2.10.1 / Parallelism oftable top with respect to X Axis / 0.02/Full diameter / mm
2.10.2 / Perpendicularity of Ram movement with respect to table top / 0.01/500 / mm
2.10.3 / Axial run out of table near bore / 0.01 / mm
2.10.4 / Radial run out of table on mandrel of 300 mm on table centre –near table / 0.01 / mm
2.10.5 / Positioning accuracy – X and Z Axes as per VDI/DGQ 3441 or ISO 230-2:2006 / 0.025 or better / mm
2.10.6 / Positioning repeatability – X and Z axes as per VDI/DGQ 3441 or ISO 230-2:2006 / 0.015 or better / mm
2.11 / Control
2.11.1 / Control system / Fanuc or Siemens
2.11.2 / Drives / AC servo Digital drive
2.11.3 / Number of controlled axes / Two (X & Z)
2.11.4 / Simultaneously controllable axes / Two
2.11.5 / Incremental input & output / Minimum: 0.001 mm
2.11.6 / Feed functions
Rapid traverse override / 0-100%
Cutting feed rate override / 0-120%
Manual jog feed rate / Please specify
Manual handle feed / In step of 0.01 , 0.1 mm and / or better
Backlash compensation / Compensation of mechanical play separately settable for each axes
Stored pitch error compensation / Correction of a ball screw pitch error separately settable for each axis
Dwell / Required
2.11.7 / Spindle Functions
Spindle speed command / S -4 digit direct
2.11.8 / Tool Functions
Tool compensations / Please specify
Tool offset / Required
2.11.9 / Programming Functions
Part program storage –Battery backup / 1GB
No. of programs registerable / 100
Sub program
Inch/ Metric selection
Absolute/ Incremental selection
Positioning
Linear interpolation
Circular interpolation
Miscellaneous functions / 2digit M code
Fixed cycles / Simplified commands for machining operations
Finish cutting cycle
Stock removal in ID/OD machining
Rough face cutting cycle
Pattern repeat cycle
Peck drilling cycle
OD/ID grooving cycle
Multiple thread cutting cycle
OD/ID cutting cycle
Thread cutting cycle
Face cutting cycle
2.11.10 / Operational functions
Dry run
Machine lock
Single block execution
Feed hold
Block skip function
Block search
Program number search
Sequence number search
Coordinate system setting
Self diagnosis
Soft over travel
Decimal point input
Radius/ diameter programming
Extended part program editing
Radius designation on arc
Manual reference point return
Background editing
Thread cutting retract
Continuous thread cutting
Parity check
Custom macro
Program input of offset data
Work co-ordinate system
Run time & parts count display
Direct drawing dimension programming
Program protect
Program restart
Menu programming
Polar co-ordinate interpolation
Spindle orientation (no lock)
Emergency stop
Canned cycles
Automatic acceleration and declaration
Absolute/ incremental programming
Tool nose radius compensation
Spindle speed binary/ analog output/ speed clamp
Inch/ Metric conversation
Spindle speed override
Battery backup for part program
2.11.11 / Miscellaneous
Display screen / Colour LCD with MDI keyboard. Please specify the screen size.
Selection / Menu switch
Manual data input / Alphanumeric key board
Manual pulse generator (Remote type) / For manual movement of axes
Display of messages / Operator/ Alarm messages on screen
Fault diagnosis / Using ladder diagram
Peripheral interface / USB/ Ethernet
External program execution / Through DNC mode
Graphics / standard
2.11.12 / Simulation / Should show the cutting simulation without working X, Z Axes, spindle and coolant.
  1. Essential accessories and consumables
  2. All standard accessories and consumables shall be quoted. Any other accessories, which may be essential for carrying the machining operations / to improve the performance of the machine, shall also,be quoted.
  3. Annual service contract: Non- Comprehensive AMC for a period of 3 years, after the expiry of the warranty period. Party shall quote scope and charges of preventive and breakdown maintenance.
  4. Optional features/ accessories

Sl. No. / Details of Features/ Accessories / Qty.
Voltage stabilizer with Isolation transformer / 1 No.
4.2 / Tool pre setter / 1 No.
4.3 / Hand held coolant gun / 1 No.
4.4 / Hand held air gun / 1 No.
4.5 / Absolute type Glass linear scale for X, Z axes / 1 set
4.6 / Hydraulic power operated chuck for table / 1 No.
4.7 /
  • Tool holders
  • Turning holders
  • Facing holders
  • Boring holders
  • Drill holders
/ 4 sets
4.8 / Chip conveyer : Suitable for stainless steel and Aluminium medium to long chips with trolley / 1 set
  1. Documentation
  1. Documentation to be submitted along with quotation
  • Technical specifications of machine & control system
  • Technical specifications of accessories
  • Technical compliance statement
  • Details of machine envelope & foundation plan
  • Documentation to be submitted along with Machine in English
  • Operator’s Manual
  • Maintenance Manual
  • Electrical circuit diagram in detail
  • Alarm/trouble shooting manual
  • Drawing of sub assembly & Part list
  1. Terms and Conditions
  1. Machine and accessories shall be packed in necessary road worthy packing.
  2. Pre-delivery inspection will be carried out at manufacture’s site before dispatch.
  3. Machine shall be commissioned at LPSC, Valiamala, Thiruvananthapuram, Kerala by the manufacture’s personnel.
  4. Training on programming, operation and maintenance shall be imparted to 1Engineer and 2 Technicians at LPSC for one week
  5. The machine and accessories shall be under warranty for a minimum of one year from the date of machine acceptance at LPSC site.
  6. After sales service shall be provided by the party for a minimum period of 10 years from date of machine acceptance.
  7. One set of all manuals mentioned at Cl. No. 5.2 shall be supplied along withthe machine.
  8. Final acceptance of the machine shall be based on satisfactory completion of the activities mentioned at Sl. No. 6.3and6.4.
  9. Delivery period of the machine shall be indicated in the offer.
  1. Instructions for submitting the offers

The suppliers shall submit their offers in two parts separately in sealed covers as under:

Part-I: Technical and commercial bid:

This part, in addition to covering all technical and commercial points, shall specifically contain the following.

  • Compliance matrix showing each & every tender specifications (1 to 6.9) and details of offer as per format given under.Offers without compliance matrix fully filled-up will not be considered.

Sl. No. of tender specification / Details / Tender specification / Details of offered specification / Implication in case of deviation
  • Blank price bid without price

Part-II: Price bid.

The price bid should include complete cost details and shall specifically contain the following details.

  • Price for the basic machine
  • Price for standard and essential accessories as detailed in clause No. 3.1and 3.2
  • Price for optional features and accessories as detailed in clause No. 4