Apparatus for delivering liquid coolant to cutting tools

Details Apparatus for delivering liquid coolant to cutting tools Apparatus for delivering liquid coolant to cutting tools

E - Fixed Constructions

01

C

94/50

E01C 23/06 (2006.01)

Patent

CA 1237931

ABSTRACT OF THE DISCLOSURE: A roadway milling machine includes a hollow, cylindrically walled, shaft mounted imperforate drum having tungsten carbide tipped steel cutting tools supported in tool holders extending generally radially outwardly from the cylindrical surface of the drum. The drum is moved over a roadway to be milled and is rotated on its shaft to bring the cutting tools into operative contact with the roadway. Water is fed into the drum along a water access opening provided along the axis of the drum shaft. The water flows through openings provided in the cylindrical drum wall toward each cutting tool. The water impinges upon and cools the cutting tools. In order to limit the flow of water from the drum to the cutting tools and, at the same time, to prevent the necessarily small openings from clogging up, large openings are provided through the cylindrical drum wall and well into the tool holders which extend integrally outwardly from that wall. A transverse opening through each tool holder is open to the tool holder large radial opening in the tool holder. This transverse opening is partly closed with a bolt or other rod-like structure. The minimum cross-sectional area of the bolt is less than that of the transverse opening and the bolt is free to vibrate or otherwise move under the impetus of the shock to the tool and tool holder as the tool strikes the roadway on each rotation of the drum.

476810

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