US 2015/0176409 A1 · WEAR RESISTANT INSERT FOR DIAMOND ABRASIVE CUTTER

Abstract

A cutter bit includes a wear resistant element replaceably mounted to a front surface immediately below the cutting surface of the cutter bit. The body of the cutter bit is generally formed of a hardened steel, the cutting surface can be a diamond composition fixed in a step in the upper end of the cutter bit including side edges that taper laterally outwardly toward a lower edge of the cutting surface situated adjacent to the wear resistant element and the wear resistant element is preferably formed of a carbide composition or a sintered diamond composition. The wear resistant element can have an upper edge that closely conforms to the shape of an adjacent lower edge of the cutting surface, and can be coupled to a front end of a stem passing through an opening in the cutter bit immediately below the cutting surface, the opening being perpendicular to at least a portion of the back surface of the cutter bit.

Claims20

Dependent claims

A cutter bit having generally elongated body including a lower end adapted to be connected to a working surface of a milling, planing, mining or reclaiming machine, comprising a front surface, and a back surface obverse to the front surface, a cutting surface fixed adjacent an upper end of the front surface, and a wear resistant element replaceably mounted to the front surface immediately below the cuffing surface.

A cutter bit and mounting block adapted to be fixed onto a working surface of a milling, planing, mining or reclaiming machine,

the mounting block comprising:
a first side wall, a second side wall, and a top surface, the first and second side walls being generally parallel to one another and generally perpendicular to the top surface;
a slot formed within the first side wall and extending through the top surface, the slot being generally rectangular and including first and second slot side walls, and a rear slot wall, the first and second slot side walls being generally parallel to one another and generally perpendicular to the rear slot wall, and the rear slot wall oriented at any angle relative to the first and second side walls of the mounting block;
at least one pocket formed within one of the first and second side walls to intercept the slot, and a retainer positioned within each pocket, each retainer including a planar laterally tapered surface;
the cutter bit comprising a generally elongated body dimensioned to be removably mounted within the slot, the cutter bit having an upper end including a cutting surface, a lower end including a surface having a portion engaged by the laterally tapered surface of each retainer to secure the cutter bit within the slot, and a wear resistant element replaceably mounted to the front surface immediately below the cutting surface and above the top surface of the mounting block.

2 more elements

Dependencies are inferred from the claim text.

Wear resistant insert for diamond abrasive cutter

Life of this patent

Wear resistant insert for diamond abrasive cutter

Life of this patent

Abstract

Claims20