Tender For Edm Wire Cut Machine; 1.0 SCOPE OF SUPPLY. 1.01 Design, manufacture, testing and supply of brand new and non refurbished CNC EDM Wire Cut Machine 1.02 Supply of Standard & Special: Accessories, Equipments & spares. 1.03 Packing and Transportation to Small Arms Factory Kanpur (SAF). 1.04 Installation, testing, supervision of erection, Commissioning of the machine at the SAF. 1.05 The firm must provide self certification regarding durability, sustainability of accuracy over a period of at least 15 year of continuous working in two shifts per day of 8 hours each under continuous heavy duty operation. 2.0 MACHINE FEATURE 2.01 BASIC FEATURES 2.01.01 Base and column should be made of CI / polymer Concrete. 2.01.02 Linear motion in all axes should be with ball screws. 2.01.03 Direct feedback system with linear glass scale for all the axes. 2.01.04 Centralize automatic lubrication system should be there for in all the axes. 2.01.05 CNC control water monitoring system inside work tank. 2.01.06 Universal clamping frame for holding the components 2.01.07 There should be provision for cooling important areas of machine by circulating chilled air or liquid to control the temperature of these areas. 2.02 AXES TRAVEL 2.02.01 X axis : ≥ 550 mm 2.02.02 Y axis : ≥ 350 mm 2.02.03 Z axis : ≥ 300 mm 2.02.04 U axis : ≥ 120 mm 2.02.05 V axis : ≥ 120 mm 2.02.06 Maximum speed ( X, Y,U & V Axes) : ≥ 1.5m / min. 2.02.07 taper angle : ± 35 deg /50mm. 2.03 WORKING AREA 2.03.01 Maximum work piece dimensions : ≥(1000mmx700mmx350mm) 2.03.02 dimension of table : ≥(900mmX580mm) 2.03.03 Work piece weight capacity : ≥1000 kg 2.03.04 Material of working table: Hardened stainless steel. 2.03.05 pitch of holes on working table for clamping.: 50 mm 2.03.06 dimension of hole on working table for clamping : M6/M8 2.03.07 total volume of dielectric : ≥1300 ltr. 2.03.08 sufficient illumination at work area 2.04 POSITIONAL ACCURACY (As per VDI/DGQ3441) 2.04.01 Supplier to provide positional and geometrical accuracy test chart and get approved by competent authority at SAF. 2.04.02 Positional Uncertainty (P) in X,Y,U and V axes should be 0.008mm or better as per VDI DGQ 3441/ISO. 2.04.03 Maximum positional Scatter (P max) in X, Y, U and V axes should be 0.005 mm or better as per VDI DGQ 344I/ISO. 2.04.04 Resolution of glass linear scale : .0001mm 2.05 GENERATOR 2.05.01 The generator should have the capacity to cut materials like Aluminum alloys, Alloy Steels, Stainless Steels, HSS, Carbide and CBN efficiently. 2.05.02 Finishing (Ra) on component should be achievable up to with brass wire for mild steel work material. : - ≤0.4µm Ra on mild steel. 2.05.03 There should be provision of path optimization and process adaption at the radius. 2.05.04 There should be provision of dynamic corner control. 2.05.05 There should be provision to control the influence of wire wear and flushing pressure. 2.05.06 Maximum cutting speed : ≥170 mm2/min on mild steel 2.05.07 There should be closed diamond type wire guide without clearance. 3.0 Wire to be used on machine 3.01 Wire used (Brass & Coated Brass): Machine will be suitable for using Brass & Coated Brass wire of dia 0.15 mm to 0.33mm standard (0.25 ). 3.02 Wire spool capacity: Min 3 kg 4.01 There should be automatic and programmable wire threading system 4.02 Maximum threadable height should not be less than 100 mm 4.03 Minimum wire diameter 0.25 mm should be threadable. 4.04 Auto wire verticality, edge finding & center finding 4.05 Programmable wire tension 0.3 to 2.5 Kg/cm2 4.06 There should be wire chopping provision for wire disposal. 5.01 There should be integrated dielectric unit. 5.02 Dielectric filter quality should be 0.005mm or better. 5.03 There should be programmable flushing pressure. 5.04 max. injection pressure ≥16 bar 5.05 temperature control of clean water tank ≤ ± 0.1° C.- 5.06 total volume of deionization resin capacity ≥ 16 ltr. 5.07 There should be chiller unit for dielectric 6.0 CNC System and Programming 6.01 5 axes CNC controlled (X, Y, Z, u, v), among them 4 axes should able to be controlled simultaneously. 6.02 Fanuc / Siemens/OEM make Control with its latest version 6.03 Min 15 color TFT/ LED flat screen with keyboard and touch with display in English 6.04 Precision ball screw & Glass scale closed loop AC servo system for all axes 6.05 Precision LM guide ways for all 5 axes (X, Y, u, v, Z) 6.06 Programming language as per DIN/EIA/ISO 6.07 CNC control should have facility of linear and Circular interpolation 6.08 Control system should be multitasking 6.09 Part programmed memory ≥ 4MB 6.10 Edge rounding and chamfering function Corner control strategy to enhance shape accuracy 6.11 Involutes Gear Form Geometry Generator Turning Tool (Form) Geometry Generator 6.12 Monitoring of consumables 6.13 On-screen maintenance check 6.14 Integrated collision protection in all axes 6.15 Backlash compensation Pitch error compensation Wire diameter compensation on contour 6.16 EDM machining parameter over ride 6.17 Pre-spark function 6.18 Auto alignment of the work piece 6.19 3 point centre finding (internal and external) 6.20 ≤ 0.0001mm resolution linear optical scale for X, Y, U, V & Z axis 6.21 Positional details like nominal/actual value, residual value for straight line and circles rectangular coordinates, absolute measures, display and input in mm and inch. 6.22 Sub programs, program part repetition, conditional jumps to labels, program grouping, Datum shift, Coordinate system rotation, play back function & conversion mm/inch 6.23 Programming support: graphical support: DIN/EIA/ISO, dialogue with graphical support, further information with help key 6.24 Network connection: Ethernet interface in electrical cabinet of machine: Fast Ethernet Network protocol: TCP/IP USB interface in panel Data transfer 6.25 Electronic Hand wheel with manual pulse generator (X,Y,Z,U,V) with resolution in multiplication factor of 1, 10, 100. 6.26 Error messages display 6.27 There should be 2D and 3D off- time /dry- run and on time /real time simulation facilities. 6.28 Incremental and absolute programming facilities as per .... more in document
