MHS B137E. Drills for die & mould machining. New smaller diameters ø0.95 ~ ø2.95 up to 30 x D added to the range. Complete series up to ø12.

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1 Small diameters now included Solid Carbide for Die & Mould Machining B137E s for die & mould machining Innovative drilling in hardened steel by eliminating the need for heat treatment after machining. For high precision, deep holes in hard materials for resin and die cast moulds. New smaller diameters ø.95 ~ ø2.95 up to 3 x D added to the range. Complete series up to ø12.

2 Solid Carbide for Die & Mould Machining Stable machining from the unique cutting edge geometry & double margin flute Wavy cutting edge The wave edge design achieves a sharp peripheral edge cutting performance with a strong initial cutting point near the centre. Double margin Unique guide pads add stability by providing 4 contact points. This enables a reduction in drilling time. Guide pad General guide pad location Competitor Margin Strong geometry for stable machining of moulds 2 contact points 4 contact points Web thickness In comparison with conventional drills a larger web thickness is used to increase overall rigidity. Helix angle In comparison with conventional drills, lower helix angle is used to maintain cutting edge strength. Relative buckling strength (%) Normal Higher rigidity with a 37% increase in buckling strength. Torque load mm 1.22E E+3 1.1E+3 1.4E E E E E E E+2 6.1E E E E E+2 3.5E E E E+2 6.1E+1.E+ Buckling load Refraction strength is the resistance against deflection when a load is added against the rotational axis direction. along tool life coated coating (Al,Ti)N Cemented carbide substrate TF15 Features of Miracle coated is suitable for machining of 35 55HRC mould materials. 1

3 ycutting Performance a Unique geometry specially designed for die & mould machining provides superior hole accuracy! diameter (mm) High precision (oversize) (48 5HRC) Number of holes High precision (surface roughness) (48 5HRC) aunique geometry specially designed high quality holes! ø5 (μm) High positional accuracy a drills give high positional accuracy on through holes. y Entrance-hole-the difference of exit-hole -X ø (mm) Y.1.2 X -Y H7 hole tolerance range Max. surface roughness RZ:2.16μm 1L35B Conventional Exit-hole 5 Y Entrance-hole Workpiece Hardness depth Rate pressure Machine : 5L2B (ø5mm) depth : 5 mm : 2 m/min :.15 mm/rev Workpiece Hardness depth Rate pressure Machine : 5L2B (ø5mm) depth : 5 mm : 2 m/min :.1 mm/rev X Analysis of entrance and exit positions shows that drills give highly accurate, straight holes. Workpiece Hardness depth Rate pressure Machine : 1Cr6 : 48 5HRC : 5L9B (ø5mm) : 7 mm : 2 m/min :.15 mm/rev (continuous) : 191 mm/min : W.S.O. : 2 MPa (Internal coolant) : Machining centre : X155CrVmo12 1 : 48 5HRC : 5L12B (ø5mm) : 1mm (Through hole) : 2 m/min :.1 mm/rev (continuous) : 127 mm/min : W.S.O. : 2MPa (Internal coolant) : Machining centre : X155CrVmo12 1 : 17HRC : 1L35B (ø1mm Flute length 35mm) : 25mm (Through hole) : 4 m/min :.4 mm/rev (continuous) : 637 mm/min : W.S.O. : 2MPa : Machining centre : 1L6B (ø1mm) depth : 2mm : 5 m/min :.4 mm/rev 2

4 Solid Carbide for Die & Mould Machining High efficiency drilling (continuous feed) (4HRC) a Unique g eometry specially designed for die & mould machining offers high efficiency deep drilling!.1 mm/rev.15 mm/rev. 4m/min 6m/min 8m/min Workpiece Hardness depth Rate pressure Machine : CENA1 (Plastic mould steel) : 4HRC : 6L15B (ø6mm) : 115mm : 6 m/min :.15 mm/rev (continuous) : 477 mm/min : W.S.O. : 2MPa (Internal coolant) : Machining centre : 6L3B (ø6mm) depth : 6mm : 6 m/min :.15 mm/rev.2 mm/rev 1mm ycutting performance for different workpieces STAVAX (33HRC).1mm/rev 4m/min 6m/min 8m/min VB wear (mm) After 18 holes, continued drilling is possible..2mm/rev.15mm/rev 1mm STAVAX ESR (52HRC) Number of holes Workpiece Hardness depth pressure : STAVAX (Chromium-alloy stainless steel) : 33HRC : 6L15B (ø6mm) : 115mm (Through hole) : W.S.O. : 2MPa (Internal coolant) Rate y Cutting edge damage after : 4m/min :.15 mm/rev (continuous) : 318 mm/min : 6L3B (ø6mm): 6mm depth : 4 m/min :.15 mm/rev VB wear (mm) Damaged centre 2th hole 6th hole 1th hole.4.2 Conventional Number of holes - Peripheral wear Conventional drill - Peripheral wear Workpiece Hardness depth pressure Machine : STAVAX ESR : 52HRC : 2L65B : 3WHNS2-TH : 5mm : Chlorine-free emulsion : 1.5MPa : Machining centre : 2L1B depth : 4mm : 5m/min :.4mm/rev : 5m/min :.4mm/rev (continuous)

5 X38CrMoV5 3 (45HRC).2mm/rev.15mm/rev.1mm/rev 2m/min 3m/min 4m/min 1mm X4CrMoV5-1 (5HRC) y Consistent power consumption Power consumption (kw) Power consumption (kw) th hole 2th hole 4th hole depth (mm) depth (mm) depth (mm) 6th hole 8th hole 1th hole depth (mm) depth (mm) depth (mm) Power consumption (kw) Power consumption (kw) Cr6 (55HRC) y Cutting edges after machining 5 holes Power consumption (kw) Power consumption (kw) Competitor Good Fracture VB wear (mm) VB wear (mm) VB wear (mm) Number of holes Workpiece Hardness depth pressure Number of holes VB wear after machining 1 holes Left edge Fracture After 12 holes, continued drilling is possible. : X38CrMoV5 3 (Die-cast mould steel) : 45HRC : 6L15B (ø6mm) : 115mm : W.S.O. : 2MPa (Internal coolant) Possible to machine 1 holes! : Number of holes : 3m/min Rate Right edge VB wear : Competitor's drill :.1mm/rev (continuous) : 159mm/min : 6L3B (ø6mm) depth : 6mm : 3m/min :.1mm/rev Workpiece Hardness depth : 7mm : 2 m/min Rate pressure Machine Workpiece : 1Cr6 Hardness : 55HRC : 6L12B (ø6mm) depth : 95mm Rate pressure Machine : X4CrMoV5-1 (Alloy tool steel) : 5HRC : 5L9B (ø5mm) :.15 mm/rev (continuous) : 191 mm/min : W.S.O. : 2MPa (Internal coolant) : Machining centre : 5L2B (ø5mm) depth : 5mm Cutting : 2 m/min Speed feed :.16 mm/rev : 2 m/min :.5 mm/rev (continuous) : 53 mm/min : W.S.O. : 2MPa (Internal coolant) : Machining centre : 6L3B (ø6mm) depth : 6mm Cutting : 2 m/min Speed feed :.5 mm/rev 4

6 Solid Carbide for Die & Mould Machining Steel Hardened Steel Stainless Steel adouble margin drill with high bending resistance. anon-peck drilling with long tool life for high hardness steel, 35HRC-55HRC Cast Iron Light Alloy Heat Resistant Alloy u e u u h6 <3 3< <6 6< <1 1< < ø 14 L3 L2 L1 ød4 (h6) 1 ø 135 L3 L2 L1 ød4 (h6) 2 ø 142 L3 L2 ød4 (h6) 3 ø 14 L3 L2 L1 ød4 (h6) 4 (Note 1) drills are suitable for use with shrink fit holders. (Note 2) Use the shortest type in the respective diameter as a pilot drill Length Length Length 3 Int. s 95L6B Int. s 95L9B Int. s 95L15B Int. s 95L25B Int. s 95L35B Int. a 1L6B Int. a 1L9B Int. s 1L15B Int. a 1L25B Int. a 1L35B Int. a 11L6B Int. s 11L9B Int. a 11L15B Int. a 11L25B Int. a 11L35B Int. a 12L6B Int. s 12L9B Int. a 12L15B Int. a 12L25B Int. a 12L35B Int. a 13L7B Int. s 13L11B Int. a 13L2B Int. a 13L3B Int. a 13L45B (Note) Please contact us for any geometry that is not in this catalogue (e.g. different diameter and length). Length Length Length 2 Int. a 14L7B Int. s 14L11B Int. a 14L2B Int. s 14L3B Int. s 14L45B Int. a 145L8B Int. s 145L13B Int. s 145L2B Int. a 145L35B Int. s 145L55B Int. a 15L8B Int. s 15L13B Int. a 15L2B Int. a 15L35B Int. a 15L55B Int. a 16L8B Int. s 16L13B Int. a 16L2B Int. a 16L35B Int. a 16L55B Int. a 17L8B Int. s 17L13B Int. a 17L2B Int. a 17L35B Int. a 17L55B a : Standard r : Non stock, produced to order only.

7 Length Length Length 3 Int. a 18L1B Int. s 18L15B Int. a 18L25B Int. a 18L45B Int. a 18L65B Int. a 19L1B Int. s 19L15B Int. a 19L25B Int. a 19L45B Int. a 19L65B Int. a 195L1B Int. s 195L15B Int. s 195L25B Int. a 195L45B Int. s 195L65B Int. a 2L1B Int. s 2L15B Int. a 2L25B Int. a 2L45B Int. a 2L65B Int. a 21L12B Int. s 21L2B Int. a 21L3B Int. a 21L55B Int. a 21L75B Int. a 22L12B Int. s 22L2B Int. a 22L3B Int. a 22L55B Int. a 22L75B Int. a 23L12B Int. s 23L2B Int. a 23L3B Int. a 23L55B Int. a 23L75B Int. a 24L12B Int. s 24L2B Int. a 24L3B Int. a 24L55B Int. a 24L75B Int. s 245L13B Int. a 245L2B Int. a 245L35B Int. s 245L65B Int. a 245L9B Int. a 25L13B Int. s 25L2B Int. a 25L35B Int. a 25L65B Int. a 25L9B Length Length Length 2 Int. a 26L13B Int. s 26L2B Int. a 26L35B Int. a 26L65B Int. a 26L9B Int. a 27L13B Int. s 27L2B Int. a 27L35B Int. a 27L65B Int. a 27L9B Int. a 28L14B Int. s 28L2B Int. a 28L35B Int. a 28L65B Int. a 28L9B Int. a 29L14B Int. s 29L2B Int. a 29L35B Int. a 29L65B Int. a 29L9B Int. s 295L14B Int. s 295L2B Int. s 295L35B Int. a 295L65B Int. a 295L9B Int. a 3L2B Int. a 3L4B Int. a 3L6B Int. a 3L9B Int. r 31L2B Int. r 31L4B Int. r 31L6B Int. r 31L9B Int. r 32L2B Int. r 32L4B Int. r 32L6B Int. r 32L9B Int. r 33L2B Int. r 33L4B Int. r 33L6B Int. r 33L9B Int. r 34L2B Int. r 34L4B Int. r 34L6B Int. r 34L9B Int. a 35L2B Int. a 35L4B Int. a 35L6B Int. a 35L9B

8 Solid Carbide for Die & Mould Machining Length Length Length 3 Int. r 36L2B Int. r 36L4B Int. r 36L6B Int. r 36L9B Int. r 36L12B Int. r 37L2B Int. r 37L4B Int. r 37L6B Int. r 37L9B Int. r 37L12B Int. s 38L2B Int. s 38L4B Int. s 38L6B Int. s 38L9B Int. s 38L12B Int. r 39L2B Int. r 39L4B Int. r 39L6B Int. r 39L9B Int. r 39L12B Int. a 4L2B Int. a 4L4B Int. a 4L6B Int. a 4L9B Int. a 4L12B Int. r 41L2B Int. r 41L4B Int. r 41L6B Int. r 41L9B Int. r 41L12B Int. r 42L2B Int. r 42L4B Int. r 42L6B Int. r 42L9B Int. r 42L12B Int. r 43L2B Int. r 43L4B Int. r 43L6B Int. r 43L9B Int. r 43L12B Int. r 44L2B Int. r 44L4B Int. r 44L6B Int. r 44L9B Int. r 44L12B Int. a 45L2B Int. a 45L4B Int. a 45L6B Int. a 45L9B Int. a 45L12B (Note) Please contact us for any geometry that is not in this catalogue (e.g. different diameter and length). Length Length Length 2 Int. r 46L2B Int. r 46L4B Int. r 46L6B Int. r 46L9B Int. r 46L12B Int. r 46L15B Int. r 47L2B Int. r 47L4B Int. r 47L6B Int. r 47L9B Int. r 47L12B Int. r 47L15B Int. s 48L2B Int. s 48L4B Int. s 48L6B Int. s 48L9B Int. s 48L12B Int. s 48L15B Int. r 49L2B Int. r 49L4B Int. r 49L6B Int. r 49L9B Int. r 49L12B Int. r 49L15B Int. a 5L2B Int. a 5L4B Int. a 5L6B Int. a 5L9B Int. a 5L12B Int. a 5L15B Int. r 51L3B Int. r 51L6B Int. r 51L9B Int. r 51L12B Int. r 51L15B Int. r 52L3B Int. r 52L6B Int. r 52L9B Int. r 52L12B Int. r 52L15B Int. r 53L3B Int. r 53L6B Int. r 53L9B Int. r 53L12B Int. r 53L15B Int. r 54L3B Int. r 54L6B Int. r 54L9B Int. r 54L12B Int. r 54L15B a : Standard r : Non stock, produced to order only.

9 Length Length Length 3 Int. a 55L3B Int. a 55L6B Int. a 55L9B Int. a 55L12B Int. a 55L15B Int. r 56L3B Int. r 56L6B Int. r 56L9B Int. r 56L12B Int. r 56L15B Int. r 57L3B Int. r 57L6B Int. r 57L9B Int. r 57L12B Int. r 57L15B Int. s 58L3B Int. s 58L6B Int. s 58L9B Int. s 58L12B Int. s 58L15B Int. r 59L3B Int. r 59L6B Int. r 59L9B Int. r 59L12B Int. r 59L15B Int. a 6L3B Int. a 6L6B Int. a 6L9B Int. a 6L12B Int. a 6L15B Int. r 61L3B Int. r 61L6B Int. r 61L9B Int. r 61L12B Int. r 61L15B Int. r 62L3B Int. r 62L6B Int. r 62L9B Int. r 62L12B Int. r 62L15B Int. r 63L3B Int. r 63L6B Int. r 63L9B Int. r 63L12B Int. r 63L15B Int. r 64L3B Int. r 64L6B Int. r 64L9B Int. r 64L12B Int. r 64L15B Length Length Length 2 Int. a 65L3B Int. a 65L6B Int. a 65L9B Int. a 65L12B Int. a 65L15B Int. r 66L3B Int. r 66L6B Int. r 66L9B Int. r 66L12B Int. r 66L15B Int. r 66L2B Int. r 67L3B Int. r 67L6B Int. r 67L9B Int. r 67L12B Int. r 67L15B Int. r 67L2B Int. s 68L3B Int. s 68L6B Int. s 68L9B Int. s 68L12B Int. s 68L15B Int. s 68L2B Int. r 69L3B Int. r 69L6B Int. r 69L9B Int. r 69L12B Int. r 69L15B Int. r 69L2B Int. a 7L3B Int. a 7L6B Int. a 7L9B Int. a 7L12B Int. a 7L15B Int. a 7L2B Int. r 71L3B Int. r 71L6B Int. r 71L9B Int. r 71L12B Int. r 71L15B Int. r 71L2B Int. r 72L3B Int. r 72L6B Int. r 72L9B Int. r 72L12B Int. r 72L15B Int. r 72L2B

10 Solid Carbide for Die & Mould Machining Length Length Length 2 Int. r 73L3B Int. r 73L6B Int. r 73L9B Int. r 73L12B Int. r 73L15B Int. r 73L2B Int. r 74L3B Int. r 74L6B Int. r 74L9B Int. r 74L12B Int. r 74L15B Int. r 74L2B Int. a 75L3B Int. a 75L6B Int. a 75L9B Int. a 75L12B Int. a 75L15B Int. a 75L2B Int. r 76L3B Int. r 76L6B Int. r 76L9B Int. r 76L12B Int. r 76L15B Int. r 76L2B Int. r 76L25B Int. r 77L3B Int. r 77L6B Int. r 77L9B Int. r 77L12B Int. r 77L15B Int. r 77L2B Int. r 77L25B Int. s 78L3B Int. s 78L6B Int. s 78L9B Int. s 78L12B Int. s 78L15B Int. s 78L2B Int. s 78L25B Int. r 79L3B Int. r 79L6B Int. r 79L9B Int. r 79L12B Int. r 79L15B Int. r 79L2B Int. r 79L25B (Note) Please contact us for any geometry that is not in this catalogue (e.g. different diameter and length). Length Length Length 1 Int. a 8L3B Int. a 8L6B Int. a 8L9B Int. a 8L12B Int. a 8L15B Int. a 8L2B Int. a 8L25B Int. r 81L4B Int. r 81L9B Int. r 81L12B Int. r 81L15B Int. r 81L2B Int. r 81L25B Int. r 82L4B Int. r 82L9B Int. r 82L12B Int. r 82L15B Int. r 82L2B Int. r 82L25B Int. r 83L4B Int. r 83L9B Int. r 83L12B Int. r 83L15B Int. r 83L2B Int. r 83L25B Int. r 84L4B Int. r 84L9B Int. r 84L12B Int. r 84L15B Int. r 84L2B Int. r 84L25B Int. a 85L4B Int. a 85L9B Int. a 85L12B Int. a 85L15B Int. a 85L2B Int. a 85L25B Int. r 86L4B Int. r 86L9B Int. r 86L12B Int. r 86L15B Int. r 86L2B Int. r 86L25B Int. r 87L4B Int. r 87L9B Int. r 87L12B Int. r 87L15B Int. r 87L2B Int. r 87L25B a : Standard r : Non stock, produced to order only.

11 Length Length Length 2 Int. s 88L4B Int. s 88L9B Int. s 88L12B Int. s 88L15B Int. s 88L2B Int. s 88L25B Int. r 89L4B Int. r 89L9B Int. r 89L12B Int. r 89L15B Int. r 89L2B Int. r 89L25B Int. a 9L4B Int. a 9L9B Int. a 9L12B Int. a 9L15B Int. a 9L2B Int. a 9L25B Int. r 91L4B Int. r 91L9B Int. r 91L12B Int. r 91L15B Int. r 91L2B Int. r 91L25B Int. r 91L3B Int. r 92L4B Int. r 92L9B Int. r 92L12B Int. r 92L15B Int. r 92L2B Int. r 92L25B Int. r 92L3B Int. r 93L4B Int. r 93L9B Int. r 93L12B Int. r 93L15B Int. r 93L2B Int. r 93L25B Int. r 93L3B Int. r 94L4B Int. r 94L9B Int. r 94L12B Int. r 94L15B Int. r 94L2B Int. r 94L25B Int. r 94L3B Length Length Length 2 Int. a 95L4B Int. a 95L9B Int. a 95L12B Int. a 95L15B Int. a 95L2B Int. a 95L25B Int. a 95L3B Int. r 96L4B Int. r 96L9B Int. r 96L12B Int. r 96L15B Int. r 96L2B Int. r 96L25B Int. r 96L3B Int. r 97L4B Int. r 97L9B Int. r 97L12B Int. r 97L15B Int. r 97L2B Int. r 97L25B Int. r 97L3B Int. s 98L4B Int. s 98L9B Int. s 98L12B Int. s 98L15B Int. s 98L2B Int. s 98L25B Int. s 98L3B Int. r 99L4B Int. r 99L9B Int. r 99L12B Int. r 99L15B Int. r 99L2B Int. r 99L25B Int. r 99L3B Int. a 1L4B Int. a 1L9B Int. a 1L12B Int. a 1L15B Int. a 1L2B Int. a 1L25B Int. a 1L3B Int. r 11L4B Int. r 11L9B Int. r 11L12B Int. r 11L15B Int. r 11L2B Int. r 11L25B Int. r 11L3B

12 Solid Carbide for Die & Mould Machining Length Length Length 1 Int. r 12L4B Int. r 12L9B Int. r 12L12B Int. r 12L15B Int. r 12L2B Int. r 12L25B Int. r 12L3B Int. r 13L4B Int. r 13L9B Int. r 13L12B Int. r 13L15B Int. r 13L2B Int. r 13L25B Int. r 13L3B Int. r 14L4B Int. r 14L9B Int. r 14L12B Int. r 14L15B Int. r 14L2B Int. r 14L25B Int. r 14L3B Int. a 15L4B Int. a 15L9B Int. a 15L12B Int. a 15L15B Int. a 15L2B Int. a 15L25B Int. a 15L3B Int. r 16L4B Int. r 16L9B Int. r 16L12B Int. r 16L15B Int. r 16L2B Int. r 16L25B Int. r 16L3B Int. r 17L4B Int. r 17L9B Int. r 17L12B Int. r 17L15B Int. r 17L2B Int. r 17L25B Int. r 17L3B Int. s 18L4B Int. s 18L9B Int. s 18L12B Int. s 18L15B Int. s 18L2B Int. s 18L25B Int. s 18L3B (Note) Please contact us for any geometry that is not in this catalogue (e.g. different diameter and length). Length Length Length 1 Int. r 19L4B Int. r 19L9B Int. r 19L12B Int. r 19L15B Int. r 19L2B Int. r 19L25B Int. r 19L3B Int. a 11L4B Int. a 11L9B Int. a 11L12B Int. a 11L15B Int. a 11L2B Int. a 11L25B Int. a 11L3B Int. r 111L4B Int. r 111L9B Int. r 111L12B Int. r 111L15B Int. r 111L2B Int. r 111L25B Int. r 111L3B Int. r 112L4B Int. r 112L9B Int. r 112L12B Int. r 112L15B Int. r 112L2B Int. r 112L25B Int. r 112L3B Int. r 113L4B Int. r 113L9B Int. r 113L12B Int. r 113L15B Int. r 113L2B Int. r 113L25B Int. r 113L3B Int. r 114L4B Int. r 114L9B Int. r 114L12B Int. r 114L15B Int. r 114L2B Int. r 114L25B Int. r 114L3B Int. a 115L4B Int. a 115L9B Int. a 115L12B Int. a 115L15B Int. a 115L2B Int. a 115L25B Int. a 115L3B a : Standard r : Non stock, produced to order only.

13 Length Length Length 1 Int. r 116L4B Int. r 116L9B Int. r 116L12B Int. r 116L15B Int. r 116L2B Int. r 116L25B Int. r 116L3B Int. r 117L4B Int. r 117L9B Int. r 117L12B Int. r 117L15B Int. r 117L2B Int. r 117L25B Int. r 117L3B Int. s 118L4B Int. s 118L9B Int. s 118L12B Int. s 118L15B Int. s 118L2B Int. s 118L25B Int. s 118L3B Int. r 119L4B Int. r 119L9B Int. r 119L12B Int. r 119L15B Int. r 119L2B Int. r 119L25B Int. r 119L3B Int. a 12L4B Int. a 12L9B Int. a 12L12B Int. a 12L15B Int. a 12L2B Int. a 12L25B Int. a 12L3B

14 Solid Carbide for Die & Mould Machining RECOMMENDED CUTTING CONDITIONS Work Material Mild Steel (<18HB), Carbon Steel, Alloy Steel (18 28HB) Austenitic Stainless Steel (<2HB), Ferritic and Martensitic Stainless Steel (>2HB) (mm) (m/min) Revolution (min -1 ) (Min. Max.) (mm/rev) rate (mm/min) (m/min) Revolution (min -1 ) (Min. Max.) (mm/rev) rate (mm/min) (.2.4) (.2.4) (.25.5) (.25.5) (.3.65) (.3.65) (.4.8) (.4.8) (.5.1) (.5.1) (.7.13) (.7.13) (.9.11) (.8.9) (.11.14) (.1.12) (.14.18) (.13.15) (.18.23) (.16.19) (.22.28) (.2.23) (.27.34) (.24.28) 415 Work Material Pre-Hardened Steel (35 45HRC), Alloy Steel, Tool Steel (<35HB) Hardened Steel (4 55HRC), Hardened Stainless Steel (<45HB) (mm) (m/min) Revolution (min -1 ) (Min. Max.) (mm/rev) rate (mm/min) (m/min) Revolution (min -1 ) (Min. Max.) (mm/rev) rate (mm/min) (.2.3) (.15.25) (.2.35) (.2.3) (.3.45) (.25.4) (.35.6) (.3.5) (.45.75) (.4.65) (.6.9) (.5.8) (.7.1) (.6.1) (.9.13) (.8.13) (.11.16) (.9.13) (.14.2) (.12.16) (.17.25) (.14.2) (.21.3) (.17.24) 335 Work Material Hardened Steel (4 55HRC), Heat Resistant Alloy (Note 1) When using the drill with a length over l/d 1, it is necessary to use a pilot hole as a guide. (If no pilot hole is used then drill breakage can occur) (Note 2) Use the shortest flute drill in the respective size as a pilot drill. (mm) (m/min) Revolution (min -1 ) (Min. Max.) (mm/rev) rate (mm/min) (.15.2) (.15.25) (.2.3) (.25.4) (.3.5) (.4.7) (.5.8) (.6.1) (.8.11) (.1.13) (.13.17) (.15.2) 2 13

15 y OPERATIONAL GUIDANCE FOR THE LONG TYPE DRILL (L/D > 1) FLAT FACE DRILLING ing a blind hole y 1. ing a pilot hole y 2. Initial cutting with the long type drill z Use a drill with a larger (flatter) point angle than the super long type. Use the shortest flute possible. x Ensure a high precision hole is drilled for the guide. c depth : Approx 1D or deeper. (Adjust the pilot hole depth according to the length of the super long type drill.) z Penetrate the pilot hole at low revolution. ( 2 3m/min, feed rate.2.3mm/rev) x Stop the long type drill 1 3mm short of the pilot hole bottom. y 3. the deep hole y 4. retraction z Start cutting at the recommended speed and feed with a non-peck (continuous feed) cycle. z After drilling, lower the cutting revolution about 1 2mm short of the hole end. ( of around 2 3m/min) x Retract the drill to the pilot hole depth starting point at a feed rate of 3mm/min. c Finally, clear the hole at a cutting speed of 2 3m/min and feed rate of.2.3mm/rev. INTERRUPTED DRILLING ing and breaking through on irregular faces or angles y 1. Spot facing y 2. ing a pilot hole z Machine a flat or the irregular face by using an end mill or slot drill capable of spot facing. Make the spot face diameter the same size as the required deep hole diameter. z Use a drill with a larger (flatter) point angle than the super long type. Use the shortest flute possible. x Ensure a high precision hole is drilled for the guide. c depth : Approx 1D or deeper. (Adjust the pilot hole depth according to the length of the super long type drill.) y 3. Initial cutting with the long type drill y 4. the deep hole z Penetrate the guide hole at a low revolution. ( 2 3m/min, feed rate.2.3mm/rev) x Stop the long type drill 1 3mm short of the pilot hole bottom. z Start cutting at the recommended speed and feed with a non-peck (continuous feed) cycle. y 5. Breaking through y 6. retraction z When breaking through, the cutting edge can be damaged. x A feed rate of.3.1mm/rev is recommended. z Finally clear the hole at a cutting speed of 2 3m/min and feed rate of.2.3mm/rev. x Retract the drill to the pilot hole depth starting point at a feed rate of 3mm/min. 14

16 Solid Carbide for Die & Mould Machining OPERATIONAL GUIDANCE Holding Length Installation Installation Tolerance Adjusting Screw A Thrust bearing type collet chuck holds the drill securely. ø A > x 1.5 Do not clamp on the flutes. Run-out <.3mm Through Spindles Through Revolving Machine pressure is approx..5mpa 7MPa Handling 1) Dirt and dust particles in old coolant can clog the oil hole and prevent effective flow. Regular coolant exchange is recommended. 2) Small particles of swarf will jam in the oil hole. Use a filter as a preventative measure. When using small diameter drills, use a fine mesh filter. Thin Workpiece If Bending Occurs Support the Workpiece Interrupted Cutting One Process zlower the feed when drilling the interrupted part. Requires Prior Machining zspot face with an end mill prior to drilling. Stepped s Burring and Workpiece Chipping z Divide the machining into two processes. x the larger hole first. Tools for chamfering and spot * facing can be produced to order. z Lower the feed rate when breaking through. x Change the point angle. MMC HARTMETALL GmbH Comeniusstr. 2, 467 Meerbusch, Germany Tel Fax admin@mmchg.de MMC HARDMETAL U.K. LTD. Mitsubishi House, Galena Close, Tamworth, Staffs. B77 4AS, U.K. Tel Fax sales@mitsubishicarbide.co.uk MITSUBISHI MATERIALS ESPAÑA, S.A. Calle Emperador 2, Museros/Valencia, Spain Tel Fax mme@mmevalencia.com MMC ITALIA S.r.l. V.le Delle Industrie 2, 22 Milano, Italy Tel Fax info@mmc-italia.it MMC HARDMETAL RUSSIA OOO LTD. UL. Bolschaja Semenovskaya, 11, bld 5, 1723 Moscow, Russia Tel Fax info@mmc-carbide.ru MMC METAL FRANCE s.a.r.l. 6, Rue Jacques Monod, 914 Orsay, France Tel Fax a : mmfsales@mmc-metal-france.fr Standard r : Non stock, produced to order only. MMC HARDMETAL POLAND SP. z o.o. Al..Armii Krajowej 61, Wroclaw, Poland Tel Fax sales@mitsubishicarbide.com.pl (XXX) Printed in Germany