TREPANNING HEAD. UNITAC Report No. 05-E. Indexable deep hole drilling tool

Transcription

1 TREPANNING HEAD UNITAC Report No. 0-E w w w. u n i t a c i n c. c o m Indexable deep hole drilling tool

2 TREPANNING HEAD Contents Features & success examples... Product information STS Outer thread (ø mm - ø28.00 mm)... STS Inner thread (ø mm - ø0.99 mm)... 6 Inserts... 8 Replacement parts... 9 Technical information...10 Cutting conditions...11 Order sheet...12 Drill tube...1 Special tooling...19 Order sheet for special Safety notes UNITAC drill head series... 2 WORLDWIDE BEST SELLER 2 TREPANNING is a method of hole drilling which leaves a center core. As trepanning consumes less power than solid drilling, it is used for drilling larger holes. This method also has an advantage when drilling a expensive material as the solid core can be used for other purposes.

3 Features and success examples Outer thread type Multiple insert grades and geometries Uniquely designed 112 type insert covers wide application area Patent No All thread types available For STS *Flange type also available upon request. Please contact us for more details. Adjustable peripheral cartridge Sub guide pad Stabilizes drill head inside guide bush and protects outer insert from damage when retracting tool after drilling Inner thread type All thread types available For STS *Flange type also available upon request. Please contact us for more details. Optimized part layout Covers entire drilling range with small variety of parts, for easy stock control. Guide pad protector Protects guide pad from damage when retracting tool after drilling Oil well casing drilling Trepanning Drill diameter: Core diameter: (mm) Chipbreaker Grade Workpiece material Cutting speed: Vc (m/min) Feed: f (mm/rev) Depth of hole: H (mm) Machine Coolant ø120 ø G UC2220 Alloy steel BTA machine Oil based The trepanning required 6% of the power compared to solid drilling of the same size hole.

4 TREPANNING HEAD Head ø ø28.00 mm STS outer four start thread T ( size) DOC ød1 ødc L Drill head Cat. No. UTT19E UTT20E UTT21E UTT22E UTT2E UTT2E UTT2E UTT26E UTT27E UTT28E UTT29E UTT0E UTT1E UTT2E UTTE UTTE UTTE UTT6E UTT7E Drill diameter Depth of cut ap (mm) Dimensions (mm) L ød T Drill tube Cat. No. Dia. (mm) ST19 9 ST ST ST22 10 ST2 12 ST2 1 ST2 166 ST ST ST ST29 21 ST0 226 ST1 28 ST2 20 ST 262 ST 27 ST 286 ST6 298 ST7 10 Ordering example for ø mm: UTT27E Before drilling operation please adjust tool diameter. For diameter adjustment please see page 10.

5 ø ø28.00 mm Note: According to diameter, some parts may not reflect the picture above. 1 Cartridge and insert Peripheral Drill diameter Inner Drill diameter Cartridge Insert 1 2 Qty Qty Qty Qty Qty OZ R 1 CSTB.D 1 T-9D AS H2. LS180RH 1 H OZ R 1 CSTBM 1 T-1D AS H2. LS1806RH 1 H OZ R 1 CSTBM 1 T-1D AS H2. LS1806RH 1 H OZ R 1 CSTB 1 T-20D AS H LS1806RH 1 H OZ R 1 CSTB 1 T-20D AS H LS1806RH 1 H Cartridge Insert Insert screw Insert screw Adjust screw Qty Qty Qty Qty IOZ02-2L 112-2L CSTB.D T-9D CSTA T-1D IOZ02-L 112-L CSTBM T-1D LS1206 H IOZ02-L 112-L CSTBM T-1D LS1206 HL IOZ02-L 112-L CSTBM T-1D LS1206 HL IOZ02-L 112-L CSTBM T-1D LS1206 HL Guide pad Drill diameter Guide pad Protector Sub guide pad 6 7 Qty Qty Qty Qty Qty Qty Qty GP18 LS1206S 2 LS1206SSS * 1 H GPT18-M LS1206S H CUG1-M 1 CSTAS 1 T-1D GP18 LS1206S - H GPT18-M LS1206S H CUG1-M 1 CSTAS 1 T-1D GP18 LS1206S - H GPT18-M LS1206S H CUG1-M 1 CSTAS 1 T-1D GP18 LS1206S - H GPT18-M LS1206S H CUG1-M 1 CSTAS 1 T-1D GP22 LS1206S - H GPT22 LS1206S H CUG1-M 1 CSTAS 1 T-1D * for dimensional guide pad Drill heads come complete with: cartridges, guide pads, protectors, sub guide pad and wrenches, but less inserts.

6 TREPANNING HEAD ø ø0.99 mm STS inner single start thread T ( size) DOC ødc ød1 L Drill head Cat. No. UTT9 UTT106 UTT118 UTT118 UTT10 UTT12 UTT1 UTT166 UTT178 UTT178 UTT190 UTT202 UTT21 UTT226 UTT28 UTT20 UTT262 UTT27 UTT286 Drill diameter Depth of cut ap (mm) Ordering example for ø mm: UTT Before drilling operation please adjust tool diameter. For diameter adjustment please see page 10. Dimensions (mm) L ød T Drill tube Cat. No. Dia. (mm) UB9 9 UB UB UB UB10 10 UB12 12 UB1 1 UB UB UB UB UB UB21 21 UB UB28 28 UB20 20 UB UB27 27 UB

7 ø ø0.99 mm Note: According to diameter, some parts may not reflect the picture above. 1 Cartridge and insert Peripheral Drill diameter Inner Drill diameter Cartridge Insert 1 2 Qty Qty Qty Qty Qty OZ R 1 CSTB.D 1 T-9D AS H2. LS180RH 1 H OZ R 1 CSTBM 1 T-1D AS H2. LS1806RH 1 H OZ R 1 CSTBM 1 T-1D AS H2. LS1806RH 1 H OZ R 1 CSTB 1 T-20D AS H LS1806RH 1 H OZ R 1 CSTB 1 T-20D AS H LS1806RH 1 H Cartridge Insert Insert screw Insert screw Adjust screw Qty Qty Qty Qty IOZ02-2L 112-2L CSTB.D T-9D CSTA T-1D IOZ02-L 112-L CSTBM T-1D LS1206 H IOZ02-L 112-L CSTBM T-1D LS1206 HL IOZ02-L 112-L CSTBM T-1D LS1206 HL IOZ02-L 112-L CSTBM T-1D LS1206 HL Guide pad Drill diameter Guide pad Protector Sub guide pad 6 7 Qty Qty Qty Qty Qty Qty Qty GP18 LS1206S 2 LS1206SSS * 1 H GPT18-M LS1206S H CUG1-M 1 CSTAS 1 T-1D GP18 LS1206S - H GPT18-M LS1206S H CUG1-M 1 CSTAS 1 T-1D GP18 LS1206S - H GPT18-M LS1206S H CUG1-M 1 CSTAS 1 T-1D GP18 LS1206S - H GPT18-M LS1206S H CUG1-M 1 CSTAS 1 T-1D GP22 LS1206S - H GPT22 LS1206S H CUG1-M 1 CSTAS 1 T-1D * for dimensional guide pad Drill heads come complete with: cartridges, guide pads, protectors, sub guide pad and wrenches, but less inserts. 7

8 TREPANNING HEAD Insert R I.C. G BR1 B S G B S Right hand type Chipbreaker T 112-2R 112-R 112-6R 112-2RBR1 112-RBR RBR RB 112-RB 112-6RB 112-2RS 112-RS 112-6RS 112-2L 112-L 112-2LB 112-LB 112-2LS 112-LS Chipbreaker Cat. No. Left hand type Dimensions (mm) IC T R Ordering example: 112-0RBR1 UC112, 10 pcs Grade CVD coating PVD coating UC1220 UC112 UC120 UC21 UC210 UC2220 UC120 G BR1 B S Patent No : Standard stock item Good chip control with most materials Good chip control with heat resistant super alloy Good chip control with long chipping materials Good for lowering cutting resistance Grade area ISO Grade UC1220 UC2220 UC112 UC120 UC120 UC2220 UC120 UC120 UC21 UC120 UC21 UC2220 UC210 UC2220 UC120 UC120 ISO area Insert selection chart Workpiece material Carbon steels, alloy steels Stainless steels Grey cast irons Nodular cast irons, aluminium alloys Heat resistant material superalloys Titanium alloys First recommendation G UC2220 G UC2220 G UC2220 G UC2220 BR1 UC2220 Troubleshooting Chipping Wear G UC120 BR1 UC120 G UC120 BR1 UC120 BR1 UC120 G UC1220 BR1 UC210 G UC21 G UC21 BR1 UC210 8

9 Replacement parts Cartridge and insert Insert screw Peripheral cartridge Insert screw Inner cartridge Peripheral Insert Adjust screw Insert Outer cartridges are supplied with adjust screws and insert screw but without inserts, lock screws and wrenchs Inner cartridges are supplied with insert screw but without inserts, lock screws and wrenchs Cartridge Insert Insert screw Adjust screw OZ R CSTB.D T-9D AS H2. LS180RH H OZ R CSTBM T-1D AS000-1 H2. LS1806RH H OZ R CSTB T-20D AS H LS1806RH H Inner Cartridge Insert Insert screw IOZ02-2L 112-2L CSTB.D T-9D CSTA T-1D IOZ02-L 112-L CSTBM T-1D LS1206 H / HL * *HL is for over ø16.00 mm Guide pad and protector W H W Guide pad Dimensions (mm) Protector Dimensions (mm) W H L W H GP LS1206S / LS1206SSS ** H GPT18-M 18 9 LS1206S H GP LS1206S H GPT LS1206S H **For dimensional guide pad ø ø12.99 mm Other carbide grades, coating and ceramic are available upon request. Sub guide pad H W L Dimensional guide pad Top guide pad Peripheral cartridge and insert Guide pad Dimensions (mm) Sub guide pad W H L CUG1-M CSTAS T-1D Inner cartridge and insert Bearing guide pad 9

10 TREPANNING HEAD Diameter setting The Drill head diameter is set and inspected with a master insert in our final inspection. However, the inserts in the market have a tolerance fluctuation so each time you change or index the insert, the diameter must be adjusted as per the following method. When a corner change is made on the insert, it must be adjusted to correct size or a damage can be caused to the head body or a workpiece material. 1 1 Remove the inner cartridge next to the dimensional guide pad to avoid interference with the guide screw. 2 2 The dimensional guide pad must be slid forward to measure the diameter. 2-1 Loosen the lock screw and slide the guide pad forward. 2-2 Retighten the lock screw at the measuring position. -1 Measure the diameter with a micrometer. We recommend setting the Drill diameter at h8 tolerance to the cutting diameter. If the diameter is incorrect, go to below step If it's correct, go to below step Adjust the peripheral cartridge -1 First loosen the lock screw of the peripheral cartridge and then tighten it slightly Proceed to adjust the diameter, using the 2 adjust screws and measure with a micrometer. - - When set to the size, retighten the lock screw. - Recheck the diameter with a micrometer. If it is still out of tolerance, repeat the procedure from the step -1 Please make sure to tighten the lock screw firmly before using. If loose, the cartridge may move and cause serious problems during machining. 6 6 Slide the dimensional guide pad back to the original position and tighten the lock screw. Replace the inner cartridge and tighten the lock screw. Please check all the lock screws are firmly tightened as they may come loose if vibration occurs during drilling. 10

11 Recommended cutting conditions ISO Carbon steels high carbon steels Low alloy steels (alloying element < %) High alloy steels casting steel tool steels Stainless steels Ductile cast irons Grey cast irons Malleable cast irons Aluminium alloys forging Aluminium alloys casting Copper alloys Heat resistant materials superalloys Titanium alloys S10C - S2C, SS S2C - SC SK SNC, DCr, SNCM SCM, SMn SNS, SKD, SKT SKH, SK SUS0 SUS10, 20J SUS0, SUS16L FCD00 - FCD0 FCD00 - FCD700 FC100 - FC200 FC20 - FC0 FCMB, FCMW FCMWP, FCMP Workpiece materials Hardness Cutting Feed speed (HB) Vc (m/min) f (mm/rev) %C Non-hardened %C Non-hardened %C Hardened and tempered %C Non-hardened %C Hardened and tempered Non-hardened Hardened and tempered Hardened and tempered Hardened and tempered Non-hardened Hardened and tempered Ferritic Martensite Austenite Ferritic / pearlitic Pearlitic Low tensile strength High tensile strength Ferritic Pearlitic Non-aged Soluted, aged % Si Non-aged % Si Soluted, aged > 12% Si High silicon > 1% Pb Free cutting copper Brass, red brass Electrolytic copper Fe base Non-aged Fe base Soluted, aged Ni / Co base Non-aged Ni / Co base Soluted, aged Ni / Co base Casted α Rm α-β Rm The above values should not be used as the exact recommendations. They may need modification depending on the machining conditions, materials, etc. 11

12 TREPANNING HEAD Order sheet for trepanning head Company name Telephone No. address FAX No. Contact person Drill head diameter Drill tube diameter (mm) Thread size Drill head Cat. No. Quantity Request delivery date Ordering example: for drill head diamater: ø12.00 / STS outer thread UTT 21 E E Drill head diameter Outer thread Thread size ST 21 Drill head Tube Flange type also available upon request. Please contact us for more details. 12

13 Drill tube ST Inner thread connection Drill diameter Tube Cat. No. ST009 ST009 ST0096 ST0097 ST0098 ST0099 ST0000 ST00 ST01 ST02 ST0 ST0 ST0 ST06 ST07 ST08 ST09 ST10 ST11 ST12 ST1 ST1 ST1 L (mm) Dimensions (mm) Special ød ød1 H Please indicate the length (L) when ordering. Example for drill dia. ø60.00 mm and drill tube length 2600 mm: ST12X2600 Special lengths are available upon request. Please contact Unitac marketing department for further information. UB Outer thread connection Four start thread (for ø1.60 mm and above) Two start thread (for ø1.9 mm and less) Drill diameter Tube Cat. No. ST16 ST17 ST18 ST19 ST20 ST21 ST22 ST2 ST2 ST2 ST26 ST27 ST28 ST29 ST0 ST1 ST2 ST ST ST ST6 ST7 L (mm) Special Length Dimensions (mm) ød ød1 H : Standard stock item : Special length Drill diameter Tube Cat. No. UB12-1 UB12-2 UB1-1 UB1-2 UB1-1 UB1-2 UB1 UB16. UB18 UB20 UB22 UB2 UB26 UB28 UB0 UB UB6 UB9 UB UB7 UB1 UB6 L (mm) Special Length Please indicate the length (L) when ordering. Example for drill dia. ø60.00 mm and drill tube length 2600 mm: ST12X2600 Single start thread Dimensions (mm) Drill diameter Tube L (mm) Dimensions (mm) Cat. No. Special ød ød1 a Length ød ød1 a UB UB UB UB UB9 UB106 UB118 UB10 UB12 UB1 UB166 UB178 UB190 UB202 UB21 UB226 UB28 UB20 UB262 UB27 UB : Special length 1

14 BTA system Machine setting for single tube system Net power Feed force 0 ap = ap = 8 mm 9. mm 6. mm 8 mm 9. mm 6. mm 2 Pc (kw) 0 20 Vc = 100 m/min f = 0.2 mm/rev Ff (kn) 20 1 Vc = 100 m/min f = 0.2 mm/rev 10 Vc = 70 m/min f = 0.1 mm/rev 10 Vc = 70 m/min f = 0.1 mm/rev Drill dia. Torque Drill dia. 6 ap = 8 mm 9. mm 6. mm T (kn m) 2 1 Vc = 100 m/min f = 0.2 mm/rev Vc = 70 m/min f = 0.1 mm/rev Drill dia. Coolant pressure 2 1MPa = 1.0 N/mm 2 1 Mpa 10 atm Coolant volume 2000 P (MPa) 1 q (l/min) Drill dia Drill dia. P (MPa) q (l/min) Drill dia Drill dia. 1

15 Calculation of special length tube Drill tubes with other length than standard item are available upon request. Please calculate the tube length as below according to your machine. ST four / two start* inner thread connection Workpiece Drill head Oil pressure head Drill tube Bar rest / vibration damper Bar clamp L L1 L2' L L2'' L L L = Drill tube length L = L1 + L2 + L + L - L L1 = Oil pressure head length L2 = Drilling depth (L2' + L2'') L = Bar rest / vibration damper length L = Drill tube clamping length L = End of drill tube to tip of peripheral insert *Two start thread is for dia 1.9 and less. UB single start outer thread connection Workpiece Drill head Oil pressure head Drill tube Bar rest / vibration damper Bar clamp L L1 L2' L L2'' L L L = Drill tube length L = L1 + L2 + L + L - L L1 = Oil pressure head length L2 = Drilling depth (L2' + L2'') L = Bar rest / vibration damper length L = Drill tube clamping length L = End of drill tube to tip of peripheral insert 1

16 BTA system Machine setup STS Workpiece rotating system Rotating workpiece Guide bush Tool rotating system Rotating tool Guide bush Up to 0.02 mm Non-rotating tool - The system should be applied only when the workpiece and the tool axis are on the same line. - Better hole straightness and wear resistance on guide bush are provided compared to the toolrotating system. - Keep the alignment between guide bush and spindle within 0.02 mm. Up to 0.02 mm Non-rotating workpiece - The system can be applied even when the workpiece and the tool axis are not on the same line. - Keep the alignment between guide bush and spindle within 0.02 mm. Guide bush Tolerance Guide bush tolerance should be G6 in order to keep good tool life and cutting accuracy. Diameters for G6 tolerance are shown on the right. Material Guide bush material Hardened steel Carbide System Workpiece rotating Tool rotating Workpiece rotating G6 tolerance (mm) Advantage Economical Long life of guide bush ød Guide bush (Hardened steel or carbide) Coolant Temperature The suitable coolant temperature is 0-0 C ( F). If the temperature exceeds this range, the coolant will deteriorate easily and may shorten tool life and generate poor surface finish. Filtration The coolant must be filtered properly in order to protect guide pads and workpiece surface. Water-soluble type Around 10% (dilution rate 1/10) is recommended for the concentration of water-soluble coolant in order to protect guide pads. 16

17 Troubleshooting for insert wear Examples of trouble with cutting edge Peripheral Insert Crater wear 2 Flaking Initial chipping 1 Chipping, fracture Flank wear Problem Cause Grade Solution Cutting conditions / other Chipping, fracture - Excessive vibration or shock - Separated built-up edge Use tough grade - Reduce feed rate - Remove vibration Flaking Excessive vibration or shock Use tough grade - Reduce feed rate - Remove vibration Flank wear - Cutting speed that is too high - Inadequate tool toughness - Use grade with high wear resistance - Use coated grade - Reduce cutting speed - Reduce feed rate - Use proper coolant Crater wear - Cutting speed that is too high - Feed rate that is too high - Inadequate tool toughness - Use grade with high wear resistance - Use coated grade - Reduce cutting speed - Reduce feed rate - Use proper coolant Initial chipping - Inappropriate guide bush or pilot hole - Misalignment Use tough grade - Adjust or change guide bush or pilot hole - Reduce feed rate - Correct misalignment 17

18 BTA system Cutting condition and chip form Chip form in deep hole drilling Chip form plays a key role in STS (Single tube system) and DTS (Double tube system) while large-volume and high-pressure coolant do so as well. Because chips are removed through the tube with coolant, proper chip formation is essential for smooth and steady evacuation. How to decide the chip form Generally, chip length should be - times its width, but it tends to be longer with difficult-to-cut materials. In that case, smooth chip evacuation will be provided by making chips thinner, in other words, reducing the feed rate. Below picture shows chip formation for different cutting speeds and feeds. Short chips are delivered reducing the cutting speed or increasing the feed. Chip formation Chip formation is affected by multiple factors, such as workpiece material, chipbreaker geometry, cutting speed, feed, type of coolant, and coolant temperature. Suitable chip formation depends on each cutting operation but is controllable by changing the cutting conditions. Cutting speed: Vc (m/min) Condition Center Inner Feed: f (mm/rev) Peripheral Center Our in-house test result Drill diameter: Workpiece: Inner Peripheral ødc = ø0.00 mm Low alloy steel AISI0 From left to right in each box the order is center, inner and peripheral chip. 18

19 Special tooling Various types of special tooling are available upon request. Some examples are shown below. Please contact Unitac sales department for further information. 19

20 BTA system Requested information form for special tooling Company name Telephone No. address FAX No. Contact person Drill diameter Drill tube diameter (mm) Quantity Description of your sytem in use: Request delivery date Please sketch your drilling application 20

21 Safety notes 1. Introduction The following information is provided to be read before using the tool so that the tool is handled properly and safely. 2. Basic information of cutting tool materials 2-1 Technical terms 2-2 Physical property Cutting tool material: General term of tool material, such as cemented carbide, coated carbide, cermet, coated cermet, ceramics, CBN and PCD Carbide Material: Cemented carbide with WC (Tungsten Carbide) as the main ingredient 2- Composition Carbide, nitride, carbon-nitride and oxide with W, Ti, Al, Si, Ta, B, etc. and metals of Co, Ni, Cr, Mo, etc.. Notes for handling cutting tool materials Appearance: Depends on materials. (e.g. gray, black, gold, etc.) Smell: None Hardness: Carbide and cermet: - 0 GPaHV Ceramic: 10-0 GPaHV CBN: 20-0 GPaHV / PCD: GPaHV Specific gravity: Carbide: 9-16 / Cermet: - 9 / Ceramic: 2-7 CBN and PCD: - / HSS: 7-9 / Alloy steel: These cutting tool materials are very hard but brittle. They may be broken by shock or excessive clamp force. - Since cutting tool materials have high specific gravities, they can be heavy. Handle with care when transferring and storing. - The thermal expansion of cutting tool material is different from that of metal materials. Because of this, for shrink-fit or cooling-fit products, if the usage temperate is slightly higher (lower) than the specified temperature, cracking may occur. - If cutting tool materials become corroded due to cutting fluid, lubricating agents, or other moisture, their strength will be reduced. Care should be taken regarding storage conditions.. Notes for machining cutting tool materials - For carbide tool materials, the strength may be slightly reduced due to the surface conditions. For finishing, always use a diamond grinder. - When cutting tool materials are ground or heated, dust or mist (smoke) occurs. If a lot of it is inhaled, swallowed, or comes in contact with the eyes or skin, it could result in injury to the body. When machining, be careful to avoid exposing your body to the dust or mist; it is recommended that localized ventilation equipment be used and that a protective mask, protective goggles, and protective gloves be worn. In addition, if the dust, etc. comes in contact with your hands, wash them thoroughly with soap and water. Do not drink or eat in the work area, and wash your hands before drinking or eating. Dust on clothes should not be shaken out; use a vacuum, etc. to remove the dust or wash the clothes in a washing machine. If the cobalt contained in the cutting tool material is touched repeatedly or over a long period of time, it has been reported that it may affect the skin, respiratory organs, or heart, etc. - When performing wet machining of carbide tool materials or brazed tool, the cutting fluid may contain heavy metals and must be disposed of properly. - When a cutting tool product has been reground, check that there are no cracks after regrinding. - If a laser or electric pen, etc. is used to mark carbide tool m aterial or products, cracks may form. Do not mark sections which may be subject to stress. - When electric discharge machining is used on carbide tool mater ials or products, cracks may form on the surface which cause strength reduction. If this process is necessary, make sure to remove the cracks completely by additional operation such as griding. - When brazing the carbide tool materials, use the proper temperature to prevent falling off or breaking of the tip. 21

22 BTA system Precaution for using cutting tools Items Issue Counter measures General cutting tools Direct touch to a sharp cutting edge may cause injury. When setting up tools to the machine or taking them out of the case, please wear protective gloves. Indexable cutting tools Misuse or inappropriate working conditions may cause tool breakage or dispersion of broken pieces. Excessive impact or heavy wear will increase cutting resistance and may cause tool breakage and dispersion of broken pieces. Dispersion of hot or long chips may cause injury or burn. During cutting operation, cutting tools generate high heat. Touching tools immediately after operation may cause burn. Sparks, generation of heat or chips in high temperature during operation may cause fire. Lack of dynamic balance in high-speed revolution cause tool to break due to vibration. Direct touch to burrs which were generated on the rough surface of the workpiece may cause injury. If inserts or parts are not clamped well, falling off or dispersion may occur and cause injury. - Please use safety items, such as safety glasses and protective gloves. - Please use safety goods in the area of our recommended cutting condition. See our catalog or instruction manuals. - Please use safety items, such as safety glasses and protective gloves. - Early exchanging tools is preferable. - Please use safety items, such as safety glasses and protective gloves. - When getting rid of chips, please stop operation fi rst and wear safety items and use tools such as nipper and clipper. Please use safety items, such as safety glasses and protective gloves. - Please do not operate around Hazardous zone, in which area there is some possibility of fire or explosion. - In case of using oil-coolant, please be sure there is enough system for fire-prevention. - Please use safety items, such as safety glasses and protective gloves. - Please conduct test-operation before cutting, and confirm that there is no vibration or unusual sound. Please do not touch workpiece with bare hand. - Please clean up insert pockets or clamping parts before setting insert. - Please set up inserts with supplied wrench only, and confirm that the inserts or parts are clamped completely. If inserts are clamped too tightly by supplementary tools like pipe etc, inserts or body may be broken. Please set up with supplied wrench only. When inserts are used in high-speed revolution or parts may burst out of the body due to centrifugal force. Please use within recommended usage range. See our catalog or instruction. Milling cutters and other milling tools Since milling cutters have sharp edges, direct contact with bare hands may cause injury. Please use safety items, such as safety glasses and protective gloves. Drills If a cutter lacks balance, tools would cause vibration and it may cause injury by dispersion of broken pieces. When drilling through hole with rotating workpiece, a disc sometimes flies out from the end of workpiece with high speed. This is very dangerous since the disc has sharp edge. Some micro drills have sharp edge with the top. Direct touch to tools may cause injury. - Please use them in the range of our recommended machining condition. - Rotating portion and balancing should be checked regularly to prevent from eccentric rotation or run-out due to wear of bearing portion. Please use safety items, such as safety glasses and protective gloves. Also attach covers on chuck part. Please use safety items, such as safety glasses and protective gloves. Brazed tools Others Dispersion or falling off of broken tips may cause injury. If brazing is carried out many times, the strength of carbide tip is deteriorated and becomes easy to be broken during cutting. It is dangerous to use tools except for the fixed application. It may damage tools and machines. - Please check tips are brazed firmly. - Please do not use brazed tools in the condition that requires high cutting temperature. Please do not use carbide tools which are brazed several times since tool strength have been deteriorated. Please keep recommended usage of tools. Reference: JAPAN CEMENTED CARBIDE TOOL MANUFACTURERS' ASSOCIATION 22

23 UNITAC drill series for deep hole drilling BTA system Solid drilling Code MBU UTE BTU ETU FNTR FNBM KUSTS KUDTS Appearance Diameter Hole Surface range ødc tolerance finish (mm) IT Ra (µm) Drill head type Outer thread Brazed tips 9 2 Inner thread Indexable Single tube system 10 inserts 10 Double tube system Feature - Higher productivity and better surface finish than gundrill - Good chip breaking with -step cutting edges - Higher productivity and better surface finish than gundrill - Good chip breaking with -step cutting edges - Good chip breaking with -step cutting edges - Covers all materials with various carbide grade combinations - Good chip breaking with -step cutting edges - Covers all materials with various carbide grade combinations - Direct-mounting type avoid diameter setting - The first H-class, -cornered insert, insert type in the market - Direct-mounting type avoid diameter setting - Highly accurate hole drilling with H class insert - Cartridge type with adjustable diameter - Covers a wide application area with various options Counterboring Code KUSTR KUDTR Trepanning Code UTT Appearance Appearance Diameter Hole tolerance range ødc (mm) IT Ra (µm) Diameter Hole tolerance Indexable range ødc (mm) IT Ra (µm) Surface finish Surface finish Drill head type inserts Drill head type Indexable inserts Outer thread Outer thread Inner thread Inner thread Feature - Cartridge type with adjustable diameter - Covers a wide application area with various options Feature - Cartridge type with adjustable diameter - Covers a wide application area with various options Indexable deep drills for conventional machines Diameter Hole Surface Drill Code Appearance range tolerance finish head Feature IT Ra (µm) type MCTR TRLG HFBM Indexable inserts - The above values may change depending on the machining conditions, materials, etc. - High productivity for L/D = 8-2 for conventional machines - The first H-class, -cornered insert in the market - High productivity for L/D = 26 or more for gundrill machines - The first H-class, -cornered insert in the market - High productivity for L/D = 6-1 for M/C's and lathes - Highly accurate hole drilling with H class insert 2

24 UNITAC Head Office & Kurume Plant -7-7 Miyanojin, Kurume Fukuoka Tel Fax UNITAC head office, plant and sales offices Located in Kurume business park which has a combination of manufacturing and business enterprises near the center of Kurume city, UNITAC manufactures its high quality deep hole drilling tools. This convenient location allows easy access to highways, airports, rail service and Fukuoka port. UNITAC has an extensive quarter-century history in this field and as a member of IMC group we produce and market ourproducts to customers worldwide. UNITAC head office and plant Tokyo office Osaka office Deep hole tooling manufacturer UNITAC Distributed by: E-Catalog is available E-Catalog Online catalog is from here AS ISO1001 EC97J Oct (TJ)