percussion drill

percussion drill

[pər′kəsh·ən ‚dril]
(mechanical engineering)
A drilling machine usually using compressed air to drive a piston that delivers a series of impacts to the shank end of a drill rod or steel and attached bit.

percussion drill

A drill, 3, usually driven by compressed air, in which the drilling action is the result of a series of impacts transmitted by a drill rod to a drill bit.
References in periodicals archive ?
The LDT 360 Cable Tool Drill Rig was recognized for its percussion drill design which combines the attributes of a cable tool rig with a modern day hydraulic drive system.
Three tenders for the supply of (a) a cutting tool and a display screen for the architectural forming division, (b) a table shaped loom, tarn, a weaving machine and other instruments for the Weaving Division, also (c) machines for the carpentry workshop and a percussion drill for the Internal Design & Furniture Division.
The Makita HP1631K/2 710W Percussion Drill is PS83.
The haul included a Dewalt percussion drill and hammer, tool boxes containing hammers and chisels, a Dewalt cordless jigsaw and blade set, a cordless Makita drill and a Makita drill driver.
Thirteen RC percussion drill holes were completed for a total of 1800 metres.
Among the initial requirements of the new process included laser drilling and flow testing on a single machine with the same setup; the laser must have the capability to percussion drill 0.
The thieves stole tools including a Dewalt percussion drill and hammer, tool boxes containing hammers and chisels, a Dewalt cordless jigsaw and blade set, a cordless Makita drill and a Makita drill driver.
The full database processed includes 575 rock chip samples, 7,300 soil samples, 970 vacuum drilling samples, 10 diamond drill holes, 19 percussion drill holes, and 60 reverse circulation drill holes.
COEUR D'ALENE, Idaho -- Metalline Mining Company (OTCBB:MMGG) announced May 11, 2006 diamond drill results for the Plaza Rica area and today announces percussion drill results from the same Plaza Rica area of its Sierra Mojada Project, Coahuila, Mexico.
Paradigm Metals Limited (ASX:PDM) has commenced a 2000m air core and percussion drill program targeting iron oxide-copper-gold mineralisation at the Toolebuc project in Queensland.
A systematic pattern of vertical percussion drill holes has defined a higher grade core of gold mineralization which is the focus of the bulk sampling program.
A total of 1829 shallow vacuum, RAB and percussion drill holes define the anomaly with an average depth per hole of 5 metres.