SPECIFICATION FOR5-Axis High Speed Aerofoil Milling Machine

Transcription

1 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine Scope: A five axis, single spindle, high Speed blade Aerofoil Milling Machine for machining precision aero engine blades primarily made of titanium alloys, heat resistant super alloys like nimonic, inconel etc is required conforming to the following specification. The supply should be a turnkey solution with supply of CAM software, post processor, program, fixtures, toolings and all the necessary items to prove the blades 1 M 2640 & M 2641 before machine dispatch and during commisisoning at HAL. The specification mentioned below are minimum requirements. The machine should be capable of proving M 2640 & M 2641 blades. Machine with higher specification than mentioned below should be provided, if required to prove M 2640 & M 2641 blades. For drawings and other details of prove out blades, Senior Manager (Pur) to be contacted via imm_commercial.engines@hal-india.com. Visit of HAL ngineers for PI only after satisfactory prove out of parts at supplier's place Technical Specifications Capacity i) X-Axis stroke 450 mm or higher to suit prove out parts ii) Y-Axis stroke 300 mm or higher to suit prove out parts iii) Z-axis Stroke 400 mm or higher to suit prove out parts iv) A-Axis 360 deg endless v) Blade length when machining at the end using driven tip station: 200 mm or higher vi) Measurement resolution mm (0.1 micron) vii) Maximum feed rate force, X, Y and Z axis (100% ) 8000 N Note: B-axis of the machine shall be either swiveling table/tilting spindle configuration only. Nevertheless, the range of motion shall be as mentioned above viii) Rapid traverse speed of linear axes X, Y, Z 40 m/min or better ix) Acceleration rate of linear axes X, Y, Z 5 m/s2 or better x) Rapid traverse speed of A axis 200 rpm or better xi) Rapid traverse speed of B axis 30 rpm or better Rotary A-axis with built-in direct drive motors i) Shall have direct drive motor equipped with clamping system ii) A suitable workpiece pallet for mounting the fixtures shall be provided iii) Rotating range 360 deg continuous iv) Feed rate speed/traverse 200 rpm or better v) Nominal torque 130 Nm vi) Peak torque 250 Nm vii) Clamping torque 800 Nm or better viii) Bearing type ix) Hydraulic clamping Roller bearings Rotary B-axis with built-in direct drive motors i) Servo Torque motor drive fitted with requisite clamping and axis brakes ii) Swivelling Range 90 deg in one direction & 40 deg in other iii) Peak torque iv) Hydraulic clamping v) Bearing type: Roller bearings 1800 Nm (table swivel) / 650 Nm (tilting spindle)

2 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine 2.4 Milling Spindle The spindle shall be suitable for a tool taper of HSK A63 i) Spindle speed range Up to rpm ii) Power (at motor, 100% uty cycle) 23 kw or better iii) Max. torque (at motor, 100% uty cycle) 120 Nm or better 2.5 Positioning Accuracies Preconditions The following positional accuracy should be achievable for ambient temperature of 20 +/- 2 degree celsius or higher Positioning accuracy according VI/GQ 3441 i) Positioning accuracy in the axes X,Y and Z: a) Positioning uncertainty (P) mm b) Positioning Scatter (Ps) mm c) Backlash width (U) mm ii) Positioning accuracy in the axes A & B a) Positioning uncertainty (P) 6 sec b) Positioning Scatter (Ps) 4 sec c) Backlash width (U) 3 sec Automatic Tool Change and storage system i) No. of tool storage pockets 60 ii) Max. tool diameter 100 mm iii) Max. tool length 250 mm Coolant supply unit with compact filter i) This shall comprise of coolant supply tank, paper band filter and low pressure pump ii) Process cooling shall be facilitated via cooling nozzles surrounding the milling spindle a) Pump capacity 100 l/min (approx.) b) Pump pressure 3.0 bar (approx.) c) Total coolant tank volume approx. 950 l d) Filter size mesh approx mm iii) A manual flushing pistol system shall also be supplied with separate motor for the same 2.8 Workpiece Clamping Systems i) A suitable self centring fixture shall be provided for centric clamping of bar stock material and semi finished workpieces ii) A floating 2 jaw chuck, hydraulically actuated, floating jaws shall be provided iii) A chuck set and centring tip to floating 2-jaw chuck (Sl. No iii) shall be provided iv) A tip station drive with the following features shall be provided a) 360 continuous rotating range b) 200 rpm axis speed c) Motor integrated absolute encoder as a measurement system d) The interface shall be hydraulically actuated with 2 supply lines e) The tip force shall be manually adjustable via pressure reduction valves.

3 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine Control system General i) Siemens/Fanuc/Heidenhain (any other makes shall not be accepted) latest version CNC control with integrated PLC for control of automatic processes shall be provided ii) The control system shall be designed for 5-axis simultaneous control for the axes X, Y, Z, A & B Spline interpolation i) This feature shall ensure the production of a very smooth curvature from only a few preset points of support of a nominal contour ii) The points shall be connected by Polynomials. The compressor shall convert linear blocks (e.g. of CA) on record transitions to speed-constant splines or to acceleration-constant splines. (This shall ensure the production of gentle transitions, which protects the mechanics of the machine tool and considerably reduce the number of program blocks) iii) By setting close support points, it should also be able to program practically sharp edges Shut down and warm-up program i) After the completion of the NC-program, the NC control shall shut down automatically ii) NC-control unit, cabinet/spindle unit and coolant unit with coolant circulation remain activated iii) In order to ensure that the machine is in warm condition at the start of machining, the control voltage shall be automatically switched on by entering the date and time iv) After the control voltage is switched on, a pre set NC warm up program shall be started automatically 3.4 Automatic workpiece changer and load/unload station to automatic workpiece changer (Option) i) The mechanism shall be fully automatic and shall ensure the loading/unloading of workpieces whilst the machine is in operation ii) Workpiece weight (clamping system and blank) 50 kg or more iii) Workpiece change time 30 sec or better iv) (Option) A suitable load/unload station to work with the automatic workpiece changer shall be provided in the machine to facilitate loading and unloading of the workpiece components even when the machine is in operation. The exchange of workpieces shall happens fully automatic. 3.5 Cutter Radius Compensation i) The 3- cutter radius compensation feature (cutter compensation in space) shall allow the machining of inclined surfaces ii) This feature shall allow contour milling along a given tool path iii) The control shall correct the inclined clamping position of the tool in the machine iv) The control shall automatically calculate the resulting positions and movements, therby considering the radius of the cylindrical tool at the point of contact v) The depth of cut of cut of a cylindrical tool should be programmable vi) Besides correction in X-, Y- and Z- planes, the cutter should also move in feed forward angle and lateral angle 3.6 Features

4 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine i. 15 colour TFT flat screen monitor with key board & display in nglish language ii. ntry data of each address XXXXX. XXXX (Inches), XXXXX. XXX (Metric) iii. 2 and 3 graphic display during machining & graphic simulation iv. Spindle orientation v. Linear, circular, and helical interpolation vi. Vector compensation, Tool Radius and length off set and tool wear compensation vii. Fixture offset compensation viii. Tool life management ix. Absolute & incremental programming x. ISO code and Interactive programming xi. Background editing and programming xii. Co-ordinate transformation xiii. Bi-directional pitch error and backlash compensation xiv. Alarm & error display and diagnostic features xv. CNC main memory : 2.5 MB or more xvi. All canned cycles xvii. Program repetition and Macro Programming xviii. xternal interface: RS232 (optional), thernet interface, USB port (2nos) preferably near operator panel xix. Multi program storage with programme identification xx. Temporary origin fixing xxi. Cartesian and polar co-ordinate system xxii. Automatic repositioning after cycle interruption xxiii. Block search & skip, program No. search xxiv. ecimal point programming xxv. isplay of remaining cycle during execution of repetitive cycle/subroutine xxvi. irect drawing dimension programming xxvii. Provision should be available to transfer the generated programs from a NC PC with predator software (with RS 232 protocol optional / thernet) xxviii. PLC alarms should contain I/O information (optional) xxix. Working hour recording for machine on and program running (optional) 3.7 isplay (shall include but not limited to the following) features: i. isplay in nglish ii. Machine position iii. Program under execution iv. Block No. v. Active command block vi. Spindle speed & feed rate- actual & program value vii. Spindle load display viii. Absolute position ix. istance to go. x. Tool No & off-set No. xi. rror message and alarm, if any (indicating the fault, area and I/O No.) xii. Mode of operation xiii. Machining Time xiv. Tool under execution xv. Relative position

5 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine xvi. Part program & tool file library xvii. Tool data xviii. Work zero xix. Spindle running time display 3.8 Operator panel shall include but not limited to the following features: i. Manual pulse generator with axes selector X1, X10, X100 of etachable type ii. Manual ON/OFF for the Control System, Coolant & Spindle iii. Spindle neutral position for dialing iv. Operating modes: Jog, reference point, MI, Single block & Auto v. Manual tool indexing vi. Manual tool loading vii. Feed hold viii. mergency stop ix. Machine lock & programme lock x. Block search xi. Feed rate over ride 0 120% xii. Spindle over ride % xiii. Test Run/ry run xiv. Cycle start & stop xv. Part programme edit selector xvi. Cycle stop indication xvii. Manual reference point return xviii. Jog Retract / Axis retract edicated CAM system for blades Basic i) The offered CAM system shall encompass the leading functions for the complete milling of turbine blade aerofoil sections (aerofoil and platforms), drilling operations, as well as measuring of selected inspection points ii) Furthermore this shall include a multitude of data interfaces, an integrated tool path viewer and a material removal simulator with collision detection iii) A suitable post processor license shall be supplied to ensure optimal NC code generation for machining centres iv) Milling Cylces - Spiral Sturz Milling, Hub Shroud Milling, Parallel Sturz Milling, ngraving, Point Measuring, Prismatic and slot machining, Tip milling v) Tip milling: Tip milling cycle for cutting the blades to length vi) Prismatic and slot machining cycle: Prismatic (3) cycles for roughing the work-piece and finish milling of blade roots and shrouds and also for machining of slots. This shall include milling in 3-axis mode, slot milling vii) Geometry interfaces - STP, IGS. irect interfaces to Unigraphics CA software should also be provided viii) Tool path and material removal simulation with collision detection ix) Vericut simulation software interface x) 3 model of the machine shall be offered xi) Other milling cycles shall be quoted separately as optional

6 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine 4.2 Partial Millling (This shall be quoted separately as an option) i) This feature shall allow the milling of selected areas along the blade surface gas path i) Facet Sturz Milling ii) The cycles indicated shall be included ii) Cross Flowline Milling iii) Flowline Sturz Milling Surface Milling (This shall be quoted separately as an option) i) This shall provide competent simultaneous 5-axis milling of free form surfaces ii) It shall be suitable for machining complex features, such as machining of multiple surface blending radii around the fillet radius, platform and the platform edge Blade Inspection (This shall be quoted separately as an option) i) This software package shall ensure the straightforward measuring of the most important blade features like profiles, hub/shroud geometries & individual points ii) Logging the results of each machined blade shall also be possible (This shall be quoted as an option) General Basic Machine i) The machine shall be based based on a thermo symmetrical cross bed/suitable arrangement that utilizes an axis configuration that is suitable for milling highly complex aerofoil profiles ii) The machine shall also offer a high degree of safety concerning escaping liquid media (oil, coolant) iii) The machine shall be equipped with a complete noise-dampening enclosure with plexi-glass windows iv) Sliding door shall be provided at the operator zone for convenient access to the machining area v) A Rotating disk window shall be integrated into the sliding door at the operator zone for observing the machining area during operation vi) All safety features and operator facilities shall be fitted in accordance with U regulations and standards. ocumentary evidence of the same may be attached with the quotation. vii) A four coloured status signal tower shall be supplied for indicating the status of the machine viii) In-built tramp oil removal equipment shall be quoted as optional ix) Machine should be rodent proof Guideway and Feed rives i) The machine shall use linear guideways to attain long term precision in all linear axes ii) The guide shoes shall be preloaded and completely sealed against the ingress of foreign matter iii) Pre-loaded ball screws shall be used on all linear co-ordinate axes iv) Frequency controlled brushless AC motors with digital interface to the CNC control for all the axes. v) The vertical axes shall be endowed with a hydraulic / Suitable weight compensation system (optional) Measuring Systems

7 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine i) X, Y, Z axis lengths shall be measured by means of Heidenhain, absolute, direct measuring systems, which are encapsulated in an aluminium / suitable metal housing and purged with compressed air to ensure the scanning trolley and guideways are protected against the ingress of swarf, dust and coolant water. ii) The rotary axes may be measured using Heidenhain direct rotary measuring systems. Automatic Tool changer (ATC)and Tool Storage i) A Automatic Tool Changing (ATC) system with double gripper / suitable shall be supplied. The movements of tool changing shall be preferably hydraulically actuated. ii) Tool changing system and tool storage system shall be suitable for tool taper of HSK-A63 Hydraulic and Lubrication Systems i) The main spindle shall have life long grease / Centralised / suitable lubrication ii) The ball screws and profile rail guideways shall feature a centralised lubrication system 5.6 Compressor Cooling system i) The heat generated in the major heat sources of the machine shall be dissipated by a compressor cooling system ii) CFC free R-134a / suitable shall be used as a refrigerant iii) The electrical cabinet, both rotary axes and the motor spindle shall be cooled 5.7 Swarf disposal and coolant systems i) The automatic disposal of swarf shall be carried out via a conveyor fitted in the bed ii) A chip bin should also be supplied. iii) Suitable chip conveyor with coolant return pump shall be supplied iv) The guideways and ball screw drives shall be protected by fixed plates that shield against the ingress of contaminants and impurities v) Component cooling, utilising the maximum amount of cooling water possible, shall be achieved using coolant delivery through coolant nozzles positioned around the spindle, as well as through the spindle/tool centre. vi) The coolant liquid shall be pre-cleaned via a filter sieve located in the swarf conveyor vii) The entire coolant water shall be filtered through a separater coolant system 5.8 quivalent chart should be given for lubricant and hydraulic oil 5.9 Consumables like filter (coolant/hydraulic) should be easily available in India Remote iagnostics: xternal diagnostics for machine with CNC control shall consist of Software 5.10 TeamViewer / quivalent and diagnostics connection during the warranty period Workpiece gauging The following components shall be quoted as a part of workpiece gauging i) Probe with optical signal transmission ii) Holder for probe according to HSK taper

8 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine 5.12 iii) Calibration spot with calibration master iv) Subroutines, test and documentation v) Probing software shall offer the following functionality a) A 3 probing cycle shall be configured for measuring individual points on surfaces of complex shapes as found on impellers, blisks and turbine blades. The cycle shall be optimised to be used with the quoted CAM system. The actual measuring programmes shall be generated in the softwares provided as a part of the CAM system b) The software shall evaluate the probing results which previously were established by the standard probing cycles. The calculated offset values shall be written into the respective parameters for tool offsets or workpiece offsets. The angular position of the rotary axis shall be established with 2 measurements and then corrected Probing and correction of machine reference points a) This cycle shall be provided to check the machine accuracy and machine kinematics b) The cycle shall facilitate the automatic verification of the machine accuracy and increases process accuracy and shall correct inaccuracies due to temperature fluctuations, mechanical damage and other influence 5.13 Tool kit for control and compensation of the Kinematic accuracy of 5 axis machine configurations 6 Options: Note: Following are the optional items. Price shall be quoted separately for each items indicated below (prices for these items should not be included with the basic machine). Selection of any of the items for price comparison / ordering along with the machine is at HAL s discretion based on one-to-one compatibility of technical features. This condition shall also be applicable for any other item/feature indicated as "optional" in the specification 6.1 Tool Measurement System (Optional) i) A suitable system shall be used for measurement of tool length and diameter. The tool shall be in the milling spindle during the measuring process ii) A suitable software for tool measurement shall be provided offering the following functionality a) It shall contain the measurement subroutines, calibration positioning switch and tool measurement b) The nominal tool length data, radius, corner radius and angle will be declared in the tool management register. Length and radius shall be measured as a deviation from these nominal values and the difference shall then be transferred to the tool wear memory c) For highest possible accuracy, all the tools shall be measured immediately after the system is calibrated d) The software also should have the capability of cutting edge cavity detection for (but not limited to) spherical cutters, shaft cutters, truncated cone cutters with and without corner radius and surface cutters iii) A suitable calibration tool for tool measurement suiting the tool taper HSK-A Coolant supply unit with vacuum rotary filter in lieu of std coolant supply unit (optional) 6.3 Vapour xtraction Unit (Optional)

9 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine i) A Mechanical filtration system, suitably mounted, shall be supplied for constant cleaning of exhaust air at a rate of 99% effectiveness 6.4 Oil Skimmer i) A suitable oil skimmer shall be supplied to remove floating foreign oils and particles from the coolant supply tank (optional) Individual labeling of electrical wiring in the electrical cabinet: ach individual wire and connection to the 6.5 terminals shall be labeled Set of basic operating tools, mandrels and gauges for geometric alignment of the machine. It shall include 6.6 mandrels to align tool changing arm, spindle and ATC. 6.7 Spindle option: Tool register HSK-T63 for turning operations (optional) Coolant refrigeration and temperature control (Optional): This module shall allows coolant temperature to 6.8 be regulated via a compressor cooling unit. Coolant temperature shall also be increased by passing it through a heating coil built into the coolant tank. By controlling the coolant temperature, the milling accuracy of the machine shall be improved significantly. Additional functions for turning (Optional): The control shall be equipped to execute turning operations 6.9 (finishing only). Rotation speed of the rotary station shall be increased to 300 rpm 7 lectrical supply i) The electrical insulations should be fully tropicalised and electric system should be suitable for operation on 415 ± 10% Volts, 3 Phase, 50± 3 Hz, AC supply ii) lectrical Control panels to be confirmed to C norms. AC for electrical cabinet iii) Standard electrical supplies like three phase 415 AC 50 Hz, single phase 220 V AC 50 Hz, 24 C are only to be used for fans, motors, valves, switch gear items etc. iv) Uninterrupted power supply (UPS): The uninterruptible power supply system guarantees the controlled shut-down of the CNC system 8 Safety i) The machine should be provided with all safety features to protect the machine and the operator, while in operation, from possible damages/injury ii) All safety features and control sections of the machining area shall be fitted in accordance with C machine regulations iii) Automatic machine shut off with warning in the event of Lubrication & coolant failure spindle off and axis over travel iv) Over temperature protection for the machine shall be provided v) The equipment should be so designed that in the event of power failure there should not be any over shooting in any of the axes which could cause surface scaring etc., leading to rejection of parts vi) Automatic shut off of the machine in case of major spikes in the incoming supply which affects the machine functions (to be quoted separately as optional)

10 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine vii) The machine should work satisfactorily in the ambient conditions of 35ºC & 90% humidity 20 degree celsius temperature viii) Machine should have provision for vertical axis braking to avoid digging of tools against power failure ix) The vertical axis shall have an external brake along with motor inbuilt brake. Vertical axis falling test must be done for power failure. The vertical axis falling should not be more than 5 micron 9 Spares i) A detailed list of spares required for the maintenance of machine for a period of two years (3-shift basis) shall be quoted separately as optional. ii) The supplier should ensure the continued availability of spares for a period of minimum 10 years from the date of supply of the machine 10 Pre ispatch Inspection & Training i) Supplier should machine the prove out parts in the offered machine and send to HAL for inspection. If the inspection results are satisfactory, then HAL's engineers will visit the supplier's works for a period of one week for Pre-ispatch Inspection (PI) of the machine and Training ii) Party should prove the blades using offered machine model, offered CAM software and offered post processor only iii) Suplier should submit conceptual drawings of the fixtures along with the quotation iv) The machine shall be cleared for dispatch only after satisfactory part prove out and clearance by HAL's engineers v) Training shall be given (in nglish) to HAL ngineers by the supplier's engineers encompassing the following functional domains: - CA system - Machine operation - Maintenance (lectrical, Mechanical, CNC) - Programming 11 Installation, Commissioning and On-site Training i) rection will be carried out by HAL under the supervision and co-ordination of the manufacturer s ngineers ii) Foundation kit like vibro mounts, bolts etc., required for foundation shall be supplied by the supplier iii) The commissioning shall be done by Supplier s ngineers at HAL site within the stipulated time from the receipt of the machine at HAL site iv) ata Back up (Image Back up) for re-installation in case of Hard isc failure should be supplied on C at the end of commissioning. The data should include NC, MMC, PLC Archive files, Alarm text, fixed cycles, etc. v) PLC / ladder listing with cross reference should be provided for diagnostics

11 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine vi) The machine accuracies & capabilities (geometrical test, laser tests for all the axes) are to be proved at HAL site at the time of commissioning of the machine as a part of acceptance test vii) Laser Calibration for all the axes should be done by the supplier during commissioning of the equipment. All the applicable geometrical acceptance tests should be carried out during installation of the equipment viii) Any tools required for geometry test at HAL site during installation shall be arranged by supplier only ix) Any special tools required for lifting the machine at HAL for installation shall be arranged by supplier only x) After installation, commisisoning and part prove out, training in operations, CAM programming, post processor, programming and maintenance shall be provided to HAL personnel for a period of ten days xi) Separate training in CAM software to be provided in India to HAL personnel for a period of one week. 12 Part Prove Out i) The following components shall be proved out according to HAL's specifications by the supplier's engineers; i) M 2640 ii) M 2641 ii) The component prove out shall encompass machining the component to the required dimensions and tolerances; establishing the machining parameters and process for the parts selected for prove out parts. iii) All the required items (including but not limited to fixtures, softwares, probes, etc) for prove out of the components are in the suppliers scope iv) The parts shall be declared successfully proved out only after acceptance by HAL's inspectors in accordance with HAL's inspection criteria (CMM shall be used for inspection by HAL) v) The machine shall be accepted only after successful part prove out of all the above mentioned components Note: For 2 and 3 models of the components, vendor should contact Senior Manager (Purchase) vide imm_commercial.engines@hal-india.com. 13 ocumentation i) Two sets of following operation and maintenance manual (in nglish) along with one set of soft copy in C should be supplied along with the machine ii) C-conform, declaration of C confirmity shall be included iii) Setting/Programming Instruction Manual iv) Operators Instruction Manual v) Spare parts manual for Mechanical, lectric servos and control system vi) lectric & lectronic circuit drawings for control system, C/AC drives and interface for component level trouble shooting vii) Transport / Assembly / Commissioning

12 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine viii) Foundation drawings / Assembly drawings and installation instructions (with a check list) ix) Machine test charts x) Calibration certificate for all measurable items with calibrating procedure / sources / periodicity for all the gauges and instruments used in the machine xi) Preventive maintenance check list, trouble shooting charts and guidelines xii) Sub-assembly drawings xiii) List of sub-suppliers and the documents xiv) Printouts of Ladder iagram of the machine, machine data, special sub-routines, etc. xv) Machine diagram indicating all the service items for easy understanding of the location xvi) A detailed Failure modes and effects analysis for all the systems and sub-systems of the machine should be provided either as a separate document or as a chapter in maintenance manual ocuments to be supplied along with the technical bid Technical offer providing detailed technical description of machine and all the items offered i) List of quoted spares ii) List of Internationally reputed Aero-engine customers whom the offered machine model has been supplied by the vendor. Offered model and configuration should have supplied to Internationally reputed Aero-engine customers and should be in operation. iii) Geometrical test chart duly filled with actual values & actual positioning accuracy results (as per VI/GQ 3441) for any previously supplied machine (offered model) to any customers confirming the geometrical accuracies of the machine as per this RFQ v) Layout drawing of the offered machine model vi) Technical brochure of the offered model should be enclosed along with the quotation vii) Vendor should give a declaration that no obsolete system/ detail parts are used for the fabrication of the machine. Also, they should give a detailed list of items that may become obsolete within a year or two. viii) Conceputal drawing of the offered fixtures for prove out of the blades ix) Video link of the offered machine model carying out blade milling operations x) Undertaking that supplier will provide after sales service and spare support for the machine until 10 years from the date of installation General Instructions i) The supplier should provide technical literature/catalogues/ etailed rawings of the machine and the items offered. Sketches are not acceptable. Quotations received without these details are likely to be ignored / disqualified for consideration. The technical details mentioned in the brochure for the offered model should match with the details indicated in the offer submitted against this tender enquiry ii) The offered model should be a commercially proven model. The offered model should have been supplied to any of the aero engine manufacturing industries and it should be in operation iii) Supplier should have a strong manufacturing/sales & post sales base in India iv) The supplier must be willing to take up AMC for the machine after the completion of warranty, if required by HAL v) The technical and commercial bids shall be submitted separately under the two bid system vi) The quotation should be comprehensive against specification and the supplier should state whether the machine offered by them confirm as per specification point by point as listed. If any alternate offers are made, it should be stated as alternative and price to be quoted if any

13 SPCIFICATION FOR5-Axis High Speed Aerofoil Milling Machine vii) Comments like YS, AGR, WILL B GIVN AT TH TIM OF SUPPLY, CONFIRM, WILL B COMPLI are not acceptable where numerical values are required to be quoted viii) The offer will be ignored / disqualified in-case the supplier is designing and manufacturing the machine for the first time ix) The items to be supplied with the machine should be of standard manufacturer make, necessary drawings/ catalogues should be enclosed giving the details. Non standard items/outdated technology is not acceptable x) The supplier should clearly categorize the Basic/ Standard features as well as optional features of the machine in order to have clear cost comparison xi) All offers should be accompanied by a clause-by-clause specification compliance/ deviation