ANNEXURE 1 LIST OF STANDARD TOOLS FOR FLOOR TYPE CNC HORIZONTAL BORING MACHINE

Transcription

1 Speciation cum Compliance Certificate for Floor Type CNC H.B.M: Indent No. CG7A0109 ANNEXURE 1 LIST OF STANDARD TOOLS FOR FLOOR TYPE CNC HORIZONTAL BORING MACHINE SNO Tool Description Qty Remarks 1 Stub Arbor φ22, 27,32 & 40 mm. 2 Each Taper: BT-50 (if ATC exists) 2 Face milling holder for flange mounting φ40, 60 mm. 2 Each Taper: BT-50 (if ATC exists) 3 Combi milling holders φ16, 22,27,32,40 mm 2 Each Taper: BT-50 (if ATC exists) 4 Collet Chuck with Chucking range: φ3.0 to 26.0 mm 2 Each Taper: BT-50 (if ATC exists) 5 Collets size: φ3.0 to 26.0 mm in 2 Each Taper: BT-50 (if ATC exists) steps of 1.0 mm 6 End Mill Holders (Weldon Type) : φ32 and 40 mm. 2 Each Taper: BT-50 (if ATC exists) (with coolant through flange) 7 Morse Taper Holder with tang for 2 Each Taper : BT-50/ISO-50 up to MT-1,MT-2, MT-3, MT-4,MT-5 & MT-6. MT-6 8 Pull Studs without coolant hole 10 Nos Taper: ISO-50 Or BT-50 9 Pull Studs with coolant hole 20 Nos Taper: ISO-50 Or BT Micro fine grain Solid carbide short End mills : Dia 8.0,10.0,12.0,16.0 and 20.0 mm 4 11 Inserted carbide Face Mills : φ160, 200, Face mills with 75 deg approach angle. 12 Inserted carbide Square shoulder Face Mills : φ50,63,80,100, Inserts for the above face mills of Grade GC 4030 & GC 3040 of Sandvik or equivalent grade of other reputed suppliers. 14 Inserted carbide Full Side & Face milling cutters: φ 160 x 12 thk φ250 x 12 thk and φ 315 x 16 thk 15 Inserts for the above side & face mills of Grade GC 4030 & GC 3040 of Sandvik or equivalent grade of other reputed suppliers 1 Face mills with 90 deg approach angle. 100 Nos Nos

2 Speciation cum Compliance Certificate for Floor Type CNC H.B.M: Indent No. CG7A Sandvik Weldon type End mills (Coromill 390) of φ4,6,8,10,12, 14,16 & 18mm 16 Sandvik Weldon type End mills (Coromill 390) of φ20, 25,32 & 40 mm 17 Inserts for above End mills of Sandvik grade GC 4030 & GC 3040 or equivalent grade of other reputed suppliers 18 U-max Long edge milling cutter φ 32 & φ 40 mm of Sandvik make or equivalent 19 Inserts for above long edge mill of Grade GC 4030 & GC 3040 of Sandvik or equivalent 20 Sandvik Coromant U drill or equivalent of following diameters with L/D = 4: φ 12.7, φ 15.0, φ17.0, φ20, φ21, φ 24, φ 26, φ 30, φ 32, φ 35, φ 41, φ 43, φ58 21 Inserts for the above drills for ISO P and K materials drilling of Sandvik or equivalent. 22 Boring Bars (Std. Type ) dia. 30 to dia. 60mm 23 Twin edge boring bars(rotoflux) dia 30 to 84mm 24 Adjustable Boring bars for back Counter boring/back spot facing From dia 60 to dia 150 (pre drill sizes from dia 30 to dia 60) 25 Sleeves for boring bars 26 Adaptors 2No. 1 No 50 1 No 50 Nos 1 No 50 Nos 1 No 1 No 1 No. End mill with 90-degree approach angle. Tap sizes or Dia sizes Taper: BT-50 (if ATC exists) Taper: BT-50 (if ATC exists) Taper: BT-50 (if ATC exists)

3 Annexure-II(for Floor Type CNC H.B.M/Indent No. CG7A0109) Typical Job Prove out Drawings for Floor Type CNC H.B.M (Spindle dia 130mm) (With reference to clause 20.1 of NIT spec) 1. Rotor Drg (3 sheets) : /02 2. Rotor M/c LP : /00 3. Rotor Extn drg : /03 4. Blading Plan drg(sht no. 1,3,6) : /02 5. LP Moving Blade assly(lp-il) : /00 6. LP Moving Blade assly(lp-iil) : /00 7. LP Moving Blade assly(lp-iiil) : /00 8. Position of Insertion grooves : /01 (or) any other similar Rotor. Machining Operations to be carried out : 1) Blade Insertion Groove machining As per Blading plan sht no. 3(for HP rows pos no 103 to 146) As per LP Moving blade assly drg(lp-il) for pos no 191 As per LP Moving blade assly drg(lp-iil) for pos no 192 As per LP Moving blade assly drg(lp-iiil) for pos no 193 2) Drilling and Tapping of angular holes(for Blade row locking purpose). As per Blading plan sht no. 6(for HP rows pos no 103 to 146) As per LP Moving blade assly drg(lp-il) for pos no 191 As per LP Moving blade assly drg(lp-iil) for pos no 192 As per LP Moving blade assly drg(lp-iiil) for pos no 193 As per Rotor drg. No.(sht no.2) 3) Rotor front and rear ends drilling As per Rotor Drg No(sht no. 2& 3) 4) Drilling and tapping of balancing holes As per Blading plan sht no. 1 Note: 1.) A Typical rotor component to be machined is mentioned, however this job prove out (on any one rotor) will be done on any other nearly similar Rotor available at the time of Erection & commissioning. Modifications to carryout the same including CNC Programming, Tooling, Machining time etc.. Shall be part of contract. 2.) Operation no. 2 is to be done after blade assembly operation, if proposed bladed rotor is not available during job prove out,it is proposed to do these operations on any other similarly constructed bladed rotor available at the time of Job prove out at M/s BHEL works. Page 1 of 1

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