Solid carbide drill For removal of broken taps or drilling difficult materials

Transcript

1 General Turning DRILLING Hard cut drills Solid carbide drill For removal of broken taps or drilling difficult materials 5 D c Field of application: For removal of broken taps Drill diameter Dimensions, mm To remove taps D c mm Ordering code l 2 l 3 dm m 2 HC M UNC, 6-40 UNF, 6 A-4 A 3 HC M4, M UNC, UNF, 3 A-2 A 4 HC M6 1/4-5/16 UNC, 1/4-5/16 UNF, 1 A-0 A 5 HC M8, M10 5/16-3/8 UNC, 5/16-3/8 UNF 6 HC M10, M12 3/8-1/2 UNC, 3/8-1/2 UNF Hard-Cut drills are supplied as follows: Geometry a) In 5 piece sets comprising a drill of each size. - The extra negative geometry produces a high working temperature which Ordering example for 2 sets: 2 sets HC anneals the tap - Regrindable geometry. b) Drills can also be ordered individually with a minimum quantity of - No cutting fluid is required drill dry. 3 pieces of each size. Ordering example for 10 pieces of HC2 drills: 10 pieces HC2 Application - Drills are primarily designed for removal of broken taps, hardened bolts etc. - Can also be used for drilling in other difficult materials e.g. chilled cast irons, stellite and glass. Use machines with a stable spindle. - FMS (flexible machining system), M/C:s, NC and NC-lathes, CNC, automatics, centre and turret lathes and milling machines. Operating procedure when drilling 1. Securely clamp the workpiece on the machine table in a vice or similar rigid work-holding fixture. Centre the drill on the broken tap. SAFTY INFORMATION recautions when grinding and brazing of cemented carbide, see page I3. 2. Centre drill in the uneven surface of the fractured tap, with a larger, more rigid drill than the one which will eventually be used for drilling out the tap. 3. Select the correct size of Hard- Cut drill according to the list in the table above. The recommended spindle speeds are rpm. Drill with a consistent, steady, manual feed. Stop frequently to clear chips from the hole. 4. Once the tap has been drilled out it is a relatively simple matter to remove the remain-ing parts of the tap using a scriber or similar pointed tool. DRILLING Hard cut drills 44

2 CoroDrill 880 Indexable insert drill CoroDrill 880 DRILLING General Turning Higher hole quality faster with Step Technology True four edge technology eripheral insert Central insert - Step by step engagement - erfectly balanced cutting action - Higher feed rates - Closer hole tolerances The unique central insert is designed to protect the peripheral inserts inner corner from wear Drill adaptor for silent drilling To improve the work environment this patented dampened adaptor has been developed. It should be used with Coromant indexable insert drills in specific applications where high pitch noise is a problem. Rotating drill ISO application areas: Close H-tolerance inserts High feed General Long chipping materials Stationary drill 45

3 General Turning CoroDrill x D c Drill diameter mm Cylindrical shank Flat according to ISO 9766 Hole tolerance Tolerance, D c ±0.00/+0.25 mm 2 D c ±0.1 mm 2 D c Max hole depth, l 4 2 D c l 1s = programming length Drill dia. Dimensions, mm Radial adjustment D c mm Ordering code dm m l 1s l 2 l 3s l 4 U Inserts 1) D c Max D1650L C D1700L D1750L D1800L D1850L D1900L D1950L D2000L C D2100L D2200L D2300L D2400L C D2500L D2600L D2700L D2800L D2900L ) Inserts are ordered separately. Ordering example: 2 pieces 880-D1650L20-02 D c = M = M = M = M = M = M G

4 CoroDrill x D c Drill diameter mm Cylindrical shank Flat according to ISO 9766 Hole tolerance Tolerance, D c ±0.00/+0.25 mm 3 D c ±0.1 mm CoroDrill D c DRILLING General Turning Max hole depth, l 4 3 D c l 1s = programming length Dimensions, mm Radial adjustment Drill dia. D c mm Ordering code dm m l 1s l 2 l 3s l 4 U Inserts 1) D c Max D1650L C D1700L D1750L D1800L D1850L D1900L D1950L D2000L C D2050L D2090L D2100L D2150L D2200L D2250L D2300L D2350L D2390L D2400L C D2450L D2500L D2550L D2600L D2640L D2650L D2700L D2750L D2800L D2850L D2900L D2940L D2950L ) Inserts are ordered separately. Ordering example: 2 pieces 880-D1650L20-03 D c = M = M = M = M = M = M G

5 General Turning CoroDrill x D c Drill diameter mm Cylindrical shank Flat according to ISO 9766 Hole tolerance Tolerance, D c ±0.00/+0.40 mm 4 D c ±0.1 mm 4 D c Max hole depth, l 4 4 D c l 1s = programming length Dimensions, mm Radial adjustment Drill dia. D c mm Ordering code dm m l 1s l 2 l 3s l 4 U Inserts 1) D c Max D1650L C D1700L D1750L D1800L D1850L D1900L D1950L D2000L C D2100L D2200L D2300L D2400L C D2500L D2600L D2700L D2800L D2900L ) Inserts are ordered separately. Ordering example: 2 pieces 880-D1650L G

6 CoroDrill x D c Drill diameter mm Coromant Capto CoroDrill 880 DRILLING General Turning Hole tolerance Tolerance, D c ±0.00/+0.25 mm 2 D c ±0.1 mm 3 D c ±0.1 mm 3 D c Max hole depth, l 4 3 D c l 1s = programming length Dimensions, mm Radial adjustment Drill dia. Coupling D c mm size Ordering code D 5m l 1s l 3s l 4 U Inserts 1) D c Max Size C4 20 C4 880-D2000C C C4 880-D2100C C4 880-D2200C C4 880-D2300C C4 880-D2400C C C4 880-D2500C C4 880-D2600C C4 880-D2700C C4 880-D2800C C4 880-D2900C Size C5 20 C5 880-D2000C C C5 880-D2100C C5 880-D2200C C5 880-D2300C C5 880-D2400C C C5 880-D2500C C5 880-D2600C C5 880-D2700C C5 880-D2800C C5 880-D2900C Size C6 20 C6 880-D2000C C C6 880-D2100C C6 880-D2200C C6 880-D2300C C6 880-D2400C C C6 880-D2500C C6 880-D2600C C6 880-D2700C C6 880-D2800C C6 880-D2900C ) Inserts are ordered separately. Ordering example: 2 pieces 880-D2000C G

7 General Turning CoroDrill x D c Drill diameter mm Coromant Capto 4 D c Hole tolerance ±0.00/+0.40 mm Tolerance, D c ±0.1 mm Max hole depth, l 4 4 D c l 1s = programming length Dimensions, mm Radial adjustment Drill dia. Coupling D c mm size Ordering code D 5m l 1s l 3s l 4 U Inserts 1) D c Max Size C4 20 C4 880-D2000C C C4 880-D2100C C4 880-D2200C C4 880-D2300C C4 880-D2400C C C4 880-D2500C C4 880-D2600C C4 880-D2700C C4 880-D2800C C4 880-D2900C Size C5 20 C5 880-D2000C C C5 880-D2100C C5 880-D2200C C5 880-D2300C C5 880-D2400C C C5 880-D2500C C5 880-D2600C C5 880-D2700C C5 880-D2800C C5 880-D2900C Size C6 20 C6 880-D2000C C C6 880-D2100C C6 880-D2200C C6 880-D2300C C6 880-D2400C C C6 880-D2500C C6 880-D2600C C6 880-D2700C C6 880-D2800C C6 880-D2900C ) Inserts are ordered separately. Ordering example: 2 pieces 880-D2000C4-04 Spare parts for CoroDrill 880 Insert size Insert screw Screwdriver (Torx lus) (7I) (7I) (9I) G22 2 Ordering example: 10 pieces

8 Geometry recommendations for CoroDrill 880 D c mm Central insert eripheral insert General choice R The basic choice General geometry for most materials -GM -GM Medium feed CoroDrill 880 DRILLING General Turning roductivity choice The high feed choice -GR -GR General geometry for steel and iron Roughing, insert with strong, reinforced edge Complementary choice The choice for Long chipping materials -LM -LM Low carbon steel and stainless steels Medium feed, insert with sharp, positive edge 51

9 Turning Inserts for CoroDrill 880 Drill diameter mm Central insert C D c mm C D c mm C D c mm Medium feed High feed eripheral insert D c mm D c mm D c mm M K N S H Dimensions, mm GC GC GC GC GC GC GC GC GC GC GC GC GC GC GC GC GC GC J Ordering code ic s r ε d H-C-GM H-C-LM W05H--GM W06H--LM R H-C-GM H-C-LM W05H--GM W07H--LM R H-C-GM H-C-LM W05H--GM R W08H--LM R H-C-GR W06H--GR R H-C-GR W07H--GR R H-C-GR W08H--GR R M35 M20 M35 K25 K15 K20 K25 N20 N20 S35 S35 H20 H15 H20 = Central insert R = eripheral insert Ordering example: 100 pieces H-C-GM = First choice 52

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