ICON LEGEND & DESCRIPTION HSS CBA. Co8e. Material. TiN TYPE W TYPE N ISO 529 DIN H 7. Point Angle. Lengths. Flute Helix Angle HSSE V3

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1 ICON EGEN & ECRIPTION Material H HE High peed teel 3% Vanadium High peed teel H Co5 5% Cobalt High peed teel H Co8 * *OI 9-10% Cobalt, CARBON CARBIE µm Grain size. TEE 8% Cobalt High peed teel Carbon teel H Co8e 8% Cobalt H, Eccentric Relief harpening Finish BUE FINIH GO OXIE team (HOMO) Temper team (HOMO) Temper traw Colour BRIGHT FINIH TiAlN No urface Treatment Titanium Aluminium Nitride (Black Finish) BRIGHT FINIH Coated for a WITH length of 4 diameter TIP i Titanium Nitride (Gold Finish) TiAN suited X.TREME to olid Carbide (Violet -grey Finish) Type TYPE N Type N tandard Colour Band Application TYPE W Type W For oft Materials TYPE H Type H For Hard Materials TYPE F Parabolic Flute trong Core Milling Profile taggered Teeth ide & Face Cutters Fine Pitch Knuckle Type Roughing Profile traight Teeth ide & Face Cutters Coarse Pitch Knuckle Type Roughing Profile Fine Pitch Flat Crest Rough emifinishing Profile Coarse Pitch Flat Crest Rough emifinishing Profile tandard I IO 529 RF I IO tandard 529 tandard Refined Flute Q Quick piral WORK T.. H 7 Factory pecifications Reamer to produce H7 Tolerance hank MT 3-5 Flatted hank h6 Tolerance Morse Taper hank Plain hank h7 Tolerance Threaded hank h8 Tolerance Carbide Plain hank h6 Tolerance Point Angle Countersink Angles rill Point Angles engths tub eries End Mills Regular eries Jobber eries End Mills ong eries ong eries Etra ength eries Flute Heli Angle eft hand heli Right hand heli Centre Form A tandard Form B Protected Form R Radius Inclination To uit 1 in 10 Taper To uit 1 in 50 Taper To uit 1 in 48 Taper Continued on net page...

ICON EGEN & ECRIPTION M Metric MF Metric Fine BW British tandard Whitworth BF British tandard Whitworth Fine Threads UNC NP Unified National Coarse National Pipe traight UNF NPT Unified National Fine

2 ICON EGEN & ECRIPTION M Metric MF Metric Fine BW British tandard Whitworth BF British tandard Whitworth Fine Threads UNC NP Unified National Coarse National Pipe traight UNF NPT Unified National Fine National Pipe Taper BPT BA British tandard Pipe Taper F eries British Association BP BB B British tandard Pipe (Fine) G eries British tandard Brass Thread Form - with 47½ /55 /60 flank angle Tolerance Woodruff Tolerance Tolerance on cutting iameter Corner Rounding Tolerance irection of Cut Application Taper, Through & Blind Hole Through & Blind Hole Blind Hole Tapping Through Hole Tapping eft Hand Cutting Right Hand Cutting Hand Taps GENERA MATERIA ECRIPTION Materials Code 0 Code 1 Code 2 Code 3 Code 4 Code 5 Code 7 Free Cutting teels Carbon teel Alloy teel tainless teel Heat Resisting Alloys Nimonic Alloys Titanium Tool teel Cast Irons Nickel Manganese teels Aluminium Alloys Magnesium Alloys Zinc Alloys Copper ynthetics / Plastics

THREAG TOO uited Materials AUMINIUM COPPER OFT BRA FREE CUTTING TEE Yellow Band Fluteless Taps for threading Aluminium FUTE- E HE HE HE HE HE 512 M Properties Code * 376 I2 e Cod Pitch ize d1 I1 a 0.

3 THREAG TOO uited Materials AUMINIUM COPPER OFT BRA FREE CUTTING TEE Yellow Band Fluteless Taps for threading Aluminium FUTE- E HE HE HE HE HE 512 M Properties Code * 376 I2 e Cod Pitch ize d1 I1 a M3 M4 M5 M6 M8 M10 *M12 6HX

4 TANG BOY CEARANCE IAMETER WEB THICK- NE CHIE ANGE FANK CHIE EGE POINT POINT ANGE HANK MORE TAPER HANK HEE CIRCUAR AN IP RECE HEIX ANGE IP CEARANCE ANGE OVERA ETAIE VIEW OF IP CEARANCE TYPE OF PIRA (OR HEIX) ANGE BOY FUTE OW TRAIGHT HANK RI TANAR QUICK IAMETER Note : electing the correct rill Refer to the User Guide for detailed information.

5 RI POINT TYE tandard Point plit Point in 1412 Form C UX Point 1412 TYPE B Cast Iron Point X Point 1412 TYPE 1412 TYPE A FUTE FORM Conventional Web Parabolic Flute Form Thicker Web Benefits of the Parabolic Flute Form TRAIGHT Chipbreaker HANK RI Heavy web construction increases rigidity under torsional load thus eliminating chatter at the cutting edges which cause edge break down and early failure. The Parabolic drill web is 50-90% thicker than the standard drill, depending on drill diameter. Wider flute form, together with quicker spiral, promotes better chip removal while allowing easier coolant flow to the drill point.

6 TANAR MORE TAPER HANK To I..O B1660 R d b 1 d1 e 1 a No. of Taper Fitting line iameter iameter d Overall ength Ma 1 a Ma 1 Ma e H13 b Ma d1 Taper / mm on ia Ma R HOW TO ORER PECIA MOIFIE TANAR There are many instances when a special tool (a tool not found in the omta catalogue or price list) can be manfactured from a standard product. We call this a modified standard. omta has both the capability and capacity to offer this service which, under normal circumstances, means a short delivery time. The following are typical drill modifications: Intermediate iameters tandard sizes can be ground down to special diameters and tolerances. Reduced Overall engths tandard drills can be cut to special lengths. rill Points The standard drill point angle is 118 included. This can be modified to any angle required. Many special

7 points are available which include web thinning, notch points, split points, double angle points, spur and brad points etc. Tangs and Flats Tangs can be produced to, AA and IO, also special whistle notch flats on shanks. tep tandard drills can be modified into step drills. urface Treatments A full range of surface treatments including nitriding, stream oide, chemical blackening, gold oide and various titanium coatings are available. MUTIPE IAMETER RI F P A X E pecify whether drill is to be tep or ubland Type. = iameter of large, fluted section. P = iameter of small, fluted section. A = hank iameter. = Overall ength. F = Flute ength. E = ength of mall iameter. This is measured from the etreme point to the bottom corner of the step angle. X = Included angle of the step angle. = hank ength. It is possible to drill two or more diameters in a hole on one operation with a correctly designed drill and these are often used in mass production engineering. ome of the hole types that can be drilled in a single operation.

8 When an intermediate diameter or a non standard length of drill is required, the following diameters and lengths need to specified. traight hank A F = rill iameter A = hank iameter = Overall ength F = Flute ength = hank ength Morse Taper hank M F = rill iameter = Overall ength F = Flute ength M = Morse Taper ize

TRAINING MANUAL. Part INTRODUCTION TO TWIST DRILLS

TRAINING MANUAL. Part INTRODUCTION TO TWIST DRILLS PRESTO INTERNATIONAL UK LTD TRAINING MANUAL Part 2 INTRODUCTION TO TWIST DRILLS - 1 - DEFINITION:- A rotary end cutting tool having two or more cutting lips, and having two or more spiral (helical) or