High Precision Violet Series Drills for Counter Boring VA-PDS-CB Exclusive design for counter boring.

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1 Update B159B New sizes included High Precision Violet Series Drills for Counter Boring Exclusive design for counter boring. y Innovative cutting edge geometry for high performance counter boring. y Excellent chip breaking and high precision flat surfaces.

2 High Precision Violet Series Drills for Counter Boring y Features Special point geometry for excellent chip breaking Thinning geometry Unique thinning geometry is used to give excellent chip breaking. High precision flat surface Can obtain the same level of fl atness(under.5mm) as that of conventional counter boring tools. (*ø14.1-ø2.1 : Under.1mm ø22.-ø32. : Under.15mm) Centre cutting edge Ensures stable, high feed machining. Ideal chip geometry Versatile Low cutting force means suitability for all machines that can use HSS drills. High efficiency machining The drill delivers the same high performance as a conventional counter boring end mill but gives longer tool life. (After 1,9 holes) Number of holes (piece) 4,5 4, 3,5 3, 2,5 2, 1,5 1, 5 No damage (38 holes) 28 mm/min For longer tool life Stop machining due to wear (2711 holes) 36 mm/min For higher effi ciency Stop machining due to fracturing (24 holes) 36 mm/min Conventional counter boring carbide end mill Conventional end mill Stop machining due to vibrations (19 holes) 5 mm/min Conventional counter boring HSS end mill Cutting force ratio Rotating Axial Conventional HSS end mill (After 1,9 holes) Cutting resistance is equivalent to the VA-PDS HSS drill. Rotating Axial VA-PDS (HSS drill) y Cutting conditions Drill Workpiece S5C Cutting speed VAPDSCBD8 (ø8) 35m/min(for longer tool life) 45m/min(for higher effi ciency) 28mm/min(for longer tool life) 36mm/min(for higher effi ciency) Feed.2mm/rev Pilot drilling None Coolant W.S.O. 1

3 y Recommended cutting method y breaks up chips and prevents them wrapping around the tool. General cutting method cutting method zbolt hole drilling Chip geometry zcounter boring Chip geometry Good Good xcounter boring Tangled chips xbolt hole drilling Good Note) When counter boring using the after drilling a bolt hole (pilot hole), unbroken chips may form and wrap around the tool. y Other machining examples a Deep cunter boring Since non-peck drilling is possible up to the effective fl ute length*, there is no need to drill a pilot hole, therefore shortening the machining time. zdrilling xend milling a Blind hole The small dimple allows a thicker base material on blind holes. General drill Same hole depth Conventional cutting method Possible to machine 3xD hole depths with continuous feed. *A dimple will be left in the centre. *Effective fl ute length = Flute length - Diameter (1. to 1.5) - Penetration length a Pilot hole for boring The 18 point angle reduces the machining allowance on the end face. This reduces vibration during the fi nish boring operation and extends tool life. Machining allowance General drill 2

4 VIOLET DRILLS Short fl ute length, High precision, For counter boring Carbon Steel Alloy Steel Hardened Steel Stainless Steel Cast Iron Light Alloy e u u u Heat Resistant Alloy D1 Tolerance (mm) HG HSS V Thinning D1 <3 3<D1 <6 6<D1 < 1 1<D1<18 18<D1 < 3 3<D1< ød1 ød4 ød5 L3 L1 aunique geometry offers high effi ciency counter boring. Excellent chip breaking and fl at counterbored surface. Unit : mm Order Number Drill 118 Flute Length Overall Length Shank D1 D5 L3 L1 D4 Stock Order Number Drill 118 Flute Length Overall Length Shank D1 D5 L3 L1 D4 Stock VAPDSCBD a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a VAPDSCBD a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a 3 a : Inventory maintained in Japan.

5 Unit : mm Order Number Drill 118 Flute Length Overall Length Shank D1 D5 L3 L1 D4 Stock VAPDSCBD a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a D a 4

6 VIOLET DRILLS RECOMMENDED CUTTING CONDITIONS Work Material Drill (mm) Structural steel Aluminium alloy Revolution (min -1 ) (mm/rev) Carbon steel AISI 149 Alloy steel SCM Cast iron FCD Revolution (min -1 ) (mm/rev) Alloy tool steel AISI D2 (Low-hardness materials) Ferritic stainless steel AISI 43, AISI 45 Martensitic stainless steel AISI 42, AISI 44 Revolution (min -1 ) (mm/rev) ) The above cutting conditions are for drilling 3xD hole depths without a pilot hole. When drilling holes smaller than 1xD hole depths, it is possible to increase the revolutions by 2%. 2) Drilling without a pilot hole is recommended. If there is a pilot hole, chips are not broken. Use a peck feed when chip breaking is necessary. 3) For counter boring of a sloped face, a carbide end mill is recommended. 4) When machining austenitic stainless steels (JIS SUS34, SUS316), reduce the revolutions by 3-6% and the feed rate by 4-6%. 5) Please use a collet type drill chuck or a milling chuck. 6) Please reduce the revolution and feed rate depending on the drilling situation when the installation of workpiece or machine lacks rigidity. 7) Use suffi cient cutting fl uid. The above-mentioned cutting condition is standard when using water-soluble cutting fl uid. Please reduce the revolutions when using non-water-soluble cutting fl uid. Alloy tool steel AISI H13 ( 4HRC) Precipitation hardeningstainless steel ASTM 63, ASTM 631 Revolution (min -1 ) (mm/rev) 5

7 y Violet Coated High Precision Drill y The superior heat and abrasion resistance combined with geometries designed for specifi c purposes gives greater precision, effi ciency and longer tool life. VA-PDS and VA-PDM are for steel and hardened materials up to 4HRC. VA-PDS-SUS and VA-PDM-SUS are suitable for stainless steels and softer materials. Violet Coated High Precision Drill VA-PDS, VA-PDM VA-PDS ø.5~ø13. Violet Coated High Precision Drill for Stainless Steel VA-PDS-SUS, VA-PDM-SUS VA-PDS-SUS ø.5~ø2. VA-PDM ø.5~ø32. VA-PDM-SUS ø.5~ø13. Application Radar Chart Application Radar Chart Mild steel (15HB) 1 Mild steel (15HB) 1 Aluminium alloy Carbon steel (2HB) Aluminium alloy Carbon steel (2HB) Austenitic Stainless steel (SUS34) Heat-treated steel (4HRC) Austenitic Stainless steel (SUS34) Heat-treated steel (4HRC) Cutting Example VA-PDS Realization of long tool life with excellent abrasion resistance Cutting Example VA-PDS-SUS High performance over a wide range of cutting conditions VA-PDS TiN drill of other companies Breakage Can continue Number of holes (piece) 1,5 1, 5 Competitors TiN coated drill VA-PDS-SUS 5 1, 1,5 2, 2,5 3, Number of holes (piece) Revolution (mm/rev) Drill VA-PDS ø6. Workpiece S5C Revolution 1,8min -1 (35m/min) Feed.3mm/rev Hole depth 16mm Penetration Coolant Emulsion Drill VA-PDS-SUS ø6. Workpiece SUS34 Revolution 8min -1 (15m/min) Hole depth 16mm Penetration Coolant Emulsion 6

8 VIOLET DRILLS For Your Safety adon't handle inserts and chips without gloves. aplease machine within the recommended application range and exchange expired tools with new ones in advance of breakage. aplease use safety covers and wear safety glasses. awhen using compounded cutting oils, please take fire precautions. awhen attaching inserts or spare parts, please use only the correct wrench or spanner. awhen using rotating tools, please make a trial run to check run-out, vibration and abnormal sounds etc. MITSUBISHI MATERIALS CORPORATION Area Marketing & Operations Dept. KFC bldg., 8F, 1-6-1, Yokoami, Sumida-ku, Tokyo 13-15, Japan TEL FAX URL : (Tools specifications subject to change without notice.) EXP-1-N E( - )