Machining Rock Bits


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Oil and Gas Industries. Machining Solutions for Down the Hole Rock Bits

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Machining Solutions for Down the Hole Rock Bits


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Rock Bit for Down the Hole Hammer


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One of the fastest growing and most demanding industries is the Oil and Gas industry. The leading product used in this industry is the drill bit or rock bit drill head. The rock bit is a rotating drill used for digging down through the earth’s crust. Much like a common hand-held drill, the spinning of the drill bit allows for penetration of even the hardest rock. The drill bit is located at the bottom end of the drill string, and is responsible for actually making contact with the subsurface layers and drilling through them. The drill head is responsible for breaking up and dislodging rock, sediment, and anything else that may be encountered while drilling. There are three main types of drill bits: 1 Roller cone bit - Used in mining and 2 3 civil engineering. Cones can be milled teeth cut from the body or tungsten carbide buttons inserted into the cones. PCD (Polycrystalline Diamond Compact) bit Used for hard and abrasive rocks when long bit run is required and for deep and offshore wells where rig coast is very high. DTH (Down the Hole) hammer - A piston strikes the top of the bit as the bit slowly rotates. The diameter of the drilling head can vary from 30 to 900 mm. All rock bit heads feature carbide buttons that interface with the abrasive ground. The drill bits are commonly composed from: ANSI 4340 with 45 HRC ANSI 860, 6418F , 9315 with 38-42 HRC


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Rock Bit for Down the Hole Hammer Carbide Bit Holes 1 Range: Ø6 - 32.9 mm (Ø.236 - 1.295”) SUMOCHAM comprises a revolutionary clamping system that provides improved productivity output rates, while enabling more insert indexes. Special heads customized according to a specific application can uphold the high hole quality demand of cylindricity and tolerance up to 20 micron. Standard 1.5xD drills. Point angle can be offered from 130 to 180° with corner radius. P M K N S H 3 3 3 3 3 1 170° 150° R=0.5 R=0.5 180° R=0.5 Slot Milling 2 Range: Ø6 - 25 mm (Ø.236 - .924”) A family of tools featuring a shank and unique interchangeable heads for a variety of milling applications, including ball nose, straight shoulder, slitting and slotting applications. 3 P M K N S H 3 3 3 3 3


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Front Slot Milling Range: Ø6 - 25 mm (Ø.236 - .984”) 3 The FINISHRED variable pitch, a combination of roughing and finishing solid carbide endmill in a single tool. Ability to restrain resonance vibrations. Provides excellent surface finish with high metal removal rates. P M K N S H 3 3 3 3 3 2 PLUNGING Range: Ø16 - 100 mm (Ø.625 - 4.0”) 4 Side plungers carrying tangentially clamped inserts with 4 cutting edges. 8 mm side plunging capacity. Provides excellent side wall surface finish and a flat bottom. P M K N S H 4 3 3 3


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Rock Bit for Down the Hole Hammer 5 External Turning External and internal tools P M K N S H P M K N S H 3 3 3 3 Front Coolant Ports 6 Range: Ø7 - 32.9 mm (Ø.275 - 1.295”) Back Coolant Port 7 Range: Ø12 - 32.9 mm (Ø.472 - 1.295”) 3XD and 5XD standard drilling heads Standard 12xD and 8xD P M K N S H P M K N S H 3 3 3 3 3 3 3 3 3 3 3xD 5xD 8xD 12xD Back Front 8 Front Coolant Ports Range: Ø12 - 60 mm (Ø.472 - 2.362”) 6 8 First choice for interrupted cut machining These drills are designed with twisted coolant channels, allowing a strong body with excellent resistance to torsion and very efficient chip evacuation. P M K N S H 3 3 3 3 3


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BTA System 9 DTS - Double Tube System Range: Ø18.41-168.99 mm (Ø.724-6.65”) IT9-IT10 STS - Single Tube System Range: Ø14.51-Ø245.99 mm (Ø.571-Ø9.68”) IT9 P M K N S H 333 7 9 5 TEST REPORT ISCAR - SUMOCHAM Drill Insert type Grade Hole diameter mm/(in) Hole depth mm/(in) Cutting speed m/min/(sfm) Spindle speed (RPM) Feed mm/rev/(IPR) Table feed mm/min/(IPM) Holes per cutting edge Savings Material: 30NicrM0166 Hardness: 41-43 HRc DCN 070-011-12R-1.5D ICP 0699-141-R0.5 IC908 7 (.275”) 6.4 (.252”) 65 (.247”) 2960 0.14 (.0055”) 414 (16.3) 3276 25% 7 (.275”) 6.4 (.252”) 65 (.247”) 2960 0.14 (.0055”) 414 (16.3) 2940 Competitor Solid carbide


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$ Program Introduction Production Floor Audit New Technical Process Layout and CPU Reports New Tooling Costs and ROI Proposal 24 New Process Implementation and Optimization Technical Training hr Round-the-clock Technical Support Annual Productivity and Cost Savings Reports Stay One Step Ahead of Your Competitors by Utilizing Your 3Productivity Toolbox! • Use the most up-to-date innovative tooling technologies • Improve your current technical skills • Decrease quality control rejection rate • Increase chip volume capacity • Reduce tool inventory • Cost and efficiency data accessibility • ISCAR CTMS tool management program helps you to maintain your value 7861751 G 03/2013



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