counterbore

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Related to counterboring: spot facing

counterbore

(ˈkaʊntəˌbɔː)
n
(Building) another name for countersink
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.counterbore - a bit for enlarging the upper part of a holecounterbore - a bit for enlarging the upper part of a hole
bit - the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press; "he looked around for the right size bit"
References in periodicals archive ?
In large molds, counterboring the shoulder and increasing the though-hole clearance are the best options.
Walter (walter-tools.com/us) is now offering Capto adaptors to its line of precision boring and counterboring tools.
Tri Tool Incorporated has introduced a new high-production counterboring service for the offshore market.
"Among the innovative solutions that we offer are the new GC4325 steel turning grade that delivers increased cutting speeds and a longer more predictable tool life; CoroDrill 818 advanced counterboring technologies that offer high process security; CoroDrill 801 deep hole drilling tools that support high machine utilisation and improved flexibility; and the 'Silent Tools' family of toolholders that minimise vibration during machining," said Valerio Vertua, sales manager for Sandvik Coromant in the Middle East.
"Among the innovative solutions that we offer are the new GC4325 steel turning grade that delivers increased cutting speeds and a longer more predictable tool life; CoroDrill 818 advanced counterboring technologies that offer high process security; CoroDrill 801 deep hole drilling tools that support high machine utilization and improved flexibility; and the 'Silent Tools' family of toolholders that minimize vibration during machining," said Valerio Vertua, sales manager for Sandvik Coromant in the Middle East.
small metal parts (http://mfgpartners.net/small-metal-parts), molds, castings and allied services such as drilling, forming, grinding, counterboring, countersinking, tapping, profiling, reaming, tapping, knurling, broaching, punching and other fabrication solutions.
Counterboring the pipes may not be a viable method of controlling pipe geometry because of cost considerations or limitations on pipe wall thickness.
These services include the management of AUT (Automatic Ultrasonic Testing) calibration block selection and use; software analysis tailored specifically to match customer requirements; and end-to-end matching (without counterboring) or matching with counterbore parameters provided (removing minimum WT).
Beveling M and counterboring on surfaces machine D and C.
Spotting, drilling, reaming, chamfering, counterboring, boring, tapping, and so forth are typical operations.