Tender For Nc Double Column Jig Grinding Machine With All The Accessories, kanpur-Uttar Pradesh

Tender For Nc Double Column Jig Grinding Machine With All The Accessories; 1.0 Description of Machine: CNC double column Jig Grinding Machine with all the accessories. The machine should be capable of generating a wide variety of precision ground holes, contours and surfaces through the combined motions of the X, Y, Z, W, C & U axes. Grinding modes include, the planetary hole grinding, slot grinding, interpolated contour and chop grinding, wipe grinding, taper grinding and bottom grinding. 2.0 Scope (on turn-key basis.): 2.01 Scope of Supply of machine: Design manufacture, supply, erection/commissioning will be done by supplier 2.02 Firm to specify Model / Make of the machine offered & provide the detailed catalogue. 2.03 The pre-dispatch inspection of the machine will be conducted at manufacturers end by satisfactorily geometrical accuracy, machining trials with NAS/std test piece as well as grinding trials with one number job each in hard condition of Drawing. No. SK-6379 (Drawings attached). The finished trial components to be verified by CMM metrology at supplier’s premises, the firm will bear the cost. 2.04 After sales service, confirmation to supply of spares for adequate period of at least 10 years of CNC JIG GRINDING MACHINE is the sole responsibility of firm. 2.05 The machine should be supplied in the condition ready for the use at Small arms factory Kanpur including, first filling of oils lubricants, with all accessories, etc. 2.06 During commissioning & final acceptance of the machine will be subject to conduction of satisfactorily geometrical accuracy, machining trials with NAS/std test piece as well as grinding trials with one number job each in hard condition of Drawing. No. SK-6379 (Drawings attached). Instruments for accuracy and consumable for test to be arranged by the firm. 3 Standard Features 3.01 High Positioning Accuracy with direct measuring system. 3.02 Hydrostatic/ Mechanical Quill Guiding System for Z axis. 3.03 Electric Motors with infinitely variable speed. 3.04 Central Lubrication system. 3.05 Machine Bed with high quality hand scrapped seasoned cast iron grade/ polymer concrete. 3.06 X, Y, Z, U and C axes - Linear and circular interpolation. W axis for Vertical positioning only. 3.07 Z-Drive construction with linear /Servo motor system, Z-axis strokes should be infinitely variable. 3.08 Tool Radius compensation and feed rate calculation along with path. 3.09 C-Interpolation axes in relation to XY axes. 3.10. U-Programmable feed axis (Parallel to X-axis) with automatic bore grinding cycle for bores of different diameters. Resolution of the measuring system 0.0001 mm 3.11 Machine should be provided with full enclosure. 3.12 Coolant system should be provided to improve grinding quality/accuracy. 3.13 Multisensoric system. 3.14 Automatic calibration of grinding wheel diameter. 3.15 ISO / DIN and suppliers users software. 3.16 Machine cycles over G-functions to be provided. 3.17 Contour Grinding Cycle X,Y 3.18 Shoulder Grinding Cycle 3.19 Dressing Cycle menu 3.20. Data Buffer set cycle 3.21 Machine data cycle 3.22 Coordinate system 4.0 Technical Parameters of the machine: 4.01 Linear Traverse Axes Working range of XY : 1200 mm X 700 mm or more 4.02 Table Travel (Longitudinal X-Axis) : 1200 mm or more 4.03 Table Travel (Lateral Y-Axis) : 700 mm or more 4.04 Vertical adjustment of Grinding Wheel Head (W-Axis) : 350 mm or more. 4.05 Spindle Travel (Quill Travel) : 140 mm or more. 4.06 Maximum clearance between table surface and U-axis carrier plate for grinding motor : 800 mm more 4.07 Maximum clearance between upright columns : 750 mm more 4.08 Maximum Grinding Diameter in planetary mode with grinding motor in U Axis in centre position in automatic grinding mode- 120 mm or more. 4.09 Maximum Grinding Diameter in planetary mode with grinding motor with extension plates in semi-automatic mode - 320 or more. 4.10. Table working surface - 1200 X 700 mm or more 4.11 Table Load - minimum 600 Kg. 5.0 Table & Cross slide XY feeds 5.01 X Y Axis: 0 to 2000 mm/min or more. 5.02 Vertical Slide Feed (W): 2000 mm/min or more. 5.03 Grinding spindle speeds infinitely variable: 3000 to 60000 rpm or more. 5.04 Taper Grinding included angle (Divergent & Convergent): 3 degree or more. 5.05 Grinding Capacity (hole diameter): 0.4 to 120 mm or better. 5.06 Grinding capacity with optional extension plates (minimum or better) : 340 mm 5.07 LCD color screen: 15 or better. 6.0 Standards of Accuracy : As per VDI/DGQ 3441 6.01 Positioning uncertainty in X, Y & w (approached +/- direction) P corresponding to VDI/DGQ 3441 - 0.0025 (or better) 6.02 Mean Positional scatter of the X, Y & w (approached +/- direction) P corresponding to VDI/DGQ 3441 - 0.0020 (or better) 6.03 Mean Reversing Error of the X, Y & w (approached +/- direction) P corresponding to VDI/DGQ 3441 - 0.0013 (or better) 6.04 Positioning deviation of the X, Y & w (approached +/- direction) P corresponding to VDI/DGQ 3441 - 0.0015 (or better) 7.0 Contouring 7.01 Contouring accuracy of the Axis X & Y grinding of a gauge ring dia 200 mm maximum allowed deviation is 0.004 mm 7.02 Planetary grinding accuracy 0.0005 mm (or better) 7.03 Repeating Accuracy of the Z axis : +/- 0.0010 mm 7.04 Dynamic Reversing accuracy of the Z Axis :- +0.0000/-0.02 mm 8.0 Programmable Feed Rates 8.01 X, Y & W axes: 0 to 2000 mm/min or better. 8.02 Z axis V-Max: 15000 mm/min or better. 8.03 Main Grinding spindle motor power to be specified by the firm. 8.04 Table drive Cross feed motor - power to be specified by the firm. 8.05 Vertical up-down motor - power to be specified by the firm. 8.06 The proving of accuracy on inspection at firms premises and at Small arms factory Kanpur site shall be sole responsibility of the firm. 9.0 Electrical: Electrical and Electronic System 9.01 Operator Panel 09.01.01 Operator Panel: operators panel having complete CNC and machine control system with display shall be provided at an ergonomically suitable location. All switches should be within reach of operator for easy & safe operation. All displays/indications should also be conveniently placed accordingly 09.01.02 The entire machine functions should be organized & optimized by a CNC Control System suitable for 4 Axis simultaneous interpolation. 09.01.03 CNC system shall have RJ-45 port / USB port / Ethernet port to support communication with other devices. .... more in document

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