Pick tool assembly and method of using same

摘要

A pick tool assembly (100) comprises a strike tip (210), a holder (230) and a reversible attachment mechanism 245, 350) for coupling the strike tip (210) to the holder (230), in which the strike tip (210) comprises a strike surface including an apex. The pick tool assembly (100) will be configured such that the strike tip (210) can be non-moveably coupled to the holder (230) in a plurality of mutually opposite orientations relative to the holder, the orientations being about a symmetry axis (L) through the apex. The attachment mechanism will limit the opposite orientations (245-ii, 245-ii) to being at least about 160 degrees azimuthally apart, and be configured such that the strike tip (210) may be coupled to the holder assembly (230) in either of two and only two mutually opposite orientations.

主权项

1. A pick tool assembly for road milling or mining, comprising:
a strike tip; a holder; and a reversible attachment mechanism for coupling the strike tip to the holder, in which the strike tip comprises polycrystalline diamond (PCD) material, a boundary of which is a strike surface including an apex, the apex defining a radius of curvature in a longitudinal plane extending through the apex and a distal end of the strike tip opposite the apex, parallel to a symmetry axis through the apex, the radius of curvature being 1 to 6 mm, configured such that the strike tip can be non-moveably coupled to the holder in two mutually opposite orientations relative to the holder, the orientations being about the symmetry axis, the attachment mechanism limiting the opposite orientations to a single pair of opposite direction on diametrically opposite sides of the symmetry axis, and configured such that the strike tip may be coupled to the holder assembly in either of two and only two mutually opposite orientations.