b'Chips Away0.7 mm (0.0276") with internal coolant.However, some applications, such as those for the food and medical industries, may not allow the use of coolant because of customerKyocera SGS Precision Toolsspecifications. Kyocera SGS Precision Tools offers a variety of solid-carbide microdrills.When coolant application is suit-able, Garud said its extremely crit- reportedly provide up to four timesworkpiece. The fragile nature of ical to use a tool manufacturer-rec- the coolant volume. a microdrill means that too much ommended coolant filtration sys- Efficient machining fails due tocoolant pressure can break the tool.tem so the delicate tools do notlow thermal conductivity of the ma- You have to have that perfect re-cut the tiny chips. terials, he said, which increasesbalance, he said.Gotti said when microdrilling withthe risk of overheating the cutting high cutting parameters, which re- edges and thus their breakage. Poking Awayquires a spindle speed of at leastEffectively cooling the cuttingAt a certain depth, depending 24,000 rpm, internal coolant is es- edges also prevents built-up edge. on the application, Rutherford said sential. Mikron offers tools with in- For microdrills without coolanta peck cycle becomes unavoidable tegrated cooling channels fromports, Rak said end users must tar- with a non-through-coolant drill to 0.2 mm in diameter. In addition,get the flood coolant along theclear chips and help direct coolant the company provides tools withflute length and not just the tipinto the hole.both round coolant channels andso coolant reaches down into theWhen you do peck, Rak said, ones with a teardrop shape, whichhole where the tool is buried in theyou dont want to retract all the Easy to use softwareUp to2 m repeatabilityShop floor ready(thermally stable design)Industry 4.O readyReduce set-up times by asmuch as 7O%Measuring and Presetting TechnologyTooling Technology Shrinking Technology Balancing TechnologyHAIMER MicrosetFor precise measuring of all tools www.haimer.comwith intuitive software 18JULY 2021SmallParts.indd 18 6/17/21 10:52 AM'