b'copper electrode wheels, the ma- tip is that the outside PCD edgesimprovements it provides over the chine rotary-erodes the PCD por- hold up great, but the center of thecompetition.tions of tools and then convention- chisel is still carbide, and it still even- It runs faster, it has stronger ally grinds the carbide areas. Ac- tually breaks down, BuchenrothPCD, its more efficient, and it lasts cording to United Grinding, thesaid. The goal for the new tool waslonger, she said.machine changes from grindingto find a way to get solid PCD all theThe drill family has three versions: to erodingor vice versaonway across the center and effectivelystraight for aluminum and other non-the fly and automatically to pro- marry it to a carbide tool shank. ferrous materials; helix, or twist, for vide complete machining in a singleWest Ohio Tool worked on thatcomposites and other abrasive ma-clamping cycle. The single-spindlegoal, and the result was the EdgeX4terials; and full nib for composites.grinder has a robot loader and au- cross-center PCD-tipped drill, whichKing said work on the drill line, tomatic wheel changer. King said produced just under a mil- however, is not complete.West Ohio Tool initially producedlion holes in die-cast aluminum. We are still experimenting with an outboard-tipped PCD drill, whichUnfortunately,westilldontgeometries and continuing to add has PCD just on the outside corners,know the true tool life failure in thatgeometries to the EdgeX4 family, that can drill 350,000 holes in die- application because the drill out- she said.cast aluminum with regrinding orlasted the entire model change,Because of the expense involved re-tipping. Seeking to reduce theshe said. At one point, they startedin stocking an inventory of standard cost per hole even more comparedover with a new drill designed forPCD drills, King said all EdgeX4 with that type of tool, a customer re- the new application. drills are application-specific spe-quested a drill that lasts longer. Kingsaidthenumberinthecials. Delivery time is from four to six The challenge with the outboardname of the drill represents the fourweeks.CTEAd IndexADVERTISER NAME PAGE # ADVERTISER NAME PAGE # ADVERTISER NAME PAGE #Beckett Packaging, a div. of MOCAP42 Iscar USACover 2 Rollomatic Inc.44Bluco Corporation16 J.W. Done Co.36 Royal Products50Carmex Precision Tools LLC43 Koma Precision Inc.3 Scientific Cutting Tools47Century Tool & Design24 Kyocera SGS Precision Tools Inc.19 Star Cutter Company41Ceratizit USA Inc.Cover 4 Marubeni Citizen-Cincom Inc.5 SwiftCarb37CGTech17 Mate Precision Tooling39 Tapmatic Corporation40CONTOUR36029 MERSEN10 UNISIG31Eltool Corporation48 Michigan Deburring Tool20 Unist Inc.45GMSi Group Inc.13 MIKRON TOOL21 Walter USA LLC23Greenleaf Corporation6-7 Mitee-Bite Products LLC50 WFL Millturn Technologies32Guhring Inc.33 Norton | Saint-Gobain Abrasives9 YMW Taps USA48GWS Tool Group30 NT USA Corporation46 Zoller Inc.25-27H.B. Carbide 11 OSG USA Inc.35Haimer USA LLC18 Platinum Tooling Technologies Inc.42The Advertisers Index is provided as a courtesy to advertisers. Every effort is made to avoid errors, but should one occur, CTE is not responsible.Reviewed by the Engineering Index.Cutting Tool Engineering (ISSN:0011-4189) is published monthly. Copyright 2021 by CTE Publications Inc., 1 Northfield Plaza, Suite 240, Northfield, IL 60093-1213. All rights re served. Periodicals postage paid at Winnetka, IL 60093 and additional mailing offices. Circulated in the U.S.A. to qualified individuals concerned with the material-cutting function in industry. For others, subscriptions are $75 per year in the U.S.A.; $125 in Canada. Other foreign subscriptions are $125 per year; overseas delivery via airmail, $195. EditorialProduced in the U.S.A.and advertising offices: 1 Northfield Plaza, Suite 240, Northfield, IL 60093-1213. Phone (847) 498-9100; Fax (847) 559-4444. This magazine is protected under U.S. and international copyright laws. Before reproducing anything from this publication, call the Copyright Clearance Center Inc. at (978) 750-8400. CTE Publ ications makes every effort to ensure that the processes described in Cutting Tool Engineeringconform to sound machining practices. Neither the authors nor the publisher can be held responsible for injuries sustained while following procedures described herein. Postmaster: Send address changes to Cutting Tool Engineering, PO Box 1487, Cedar Rapids, IA 52406-1487. Canada Post: Publications Mail Agreement #40065725. Canada returns to be sent to 2835 Kew Dr., Windsor, ON N8T 3B7. ctemag.com/cteguide.com51ProTimes.indd 51 6/17/21 4:20 PM'