Milling cutting element system
OwnerWinchester E. Lathaminventor
Life of this patent
Estimating the term…
Abstract
A cylindrical cutting system, a bit holder assembly, and machine for milling or scarifying road surfaces are disclosed. A bit holder is attachable to a milling platform, and includes an inward facing surface for engaging a corresponding mating surface of the milling platform. The inward facing surface of the bit holder and the mating surface include aligning fastener and pin openings. A fastener and a pin are inserted within the respective openings to couple the bit holder to the milling platform. The mating surface may define a part of a recess formed in the milling platform. A wear element may be disposed at the leading side of the bit holder. Multiple platforms may be coupled together with axially extended platform fasteners.
Claims20
A cutting system, comprising:
- a milling platform rotatable about an axis, the milling platform including a circumferential outer surface defined about the axis, and a mating surface on the outer surface, the mating surface including a fastener base opening and a pin base opening;
- and
- a bit holder including a cutter bit, the bit holder having a radially inward facing surface engaging the corresponding mating surface of the milling platform, the radially inward facing surface including a fastener bit holder opening in alignment with the corresponding fastener base opening of the milling platform to receive a fastener, and a pin bit holder opening in alignment with the corresponding pin base opening of the milling platform to receive a pin, wherein the fastener and the pin removably couple the bit holder to the milling platform.
A bit holder, comprising:
- a leading edge, a lagging edge opposite to the leading edge, an upper surface, a lower surface opposite the upper surface, and a pair of lateral surfaces together to define an outer surface of a bit holder body,
- a mounting portion including a first opening to receive a fastener, the first opening extending through the upper and lower surfaces;
- and
- a cutting tool holder portion extending away from the mounting portion and in closer proximity to the leading edge than the mounting portion, the cutting tool holder portion including a second opening formed in the lower surface to receive a first mounting pin to couple to a milling platform outer surface.
A machine for milling a surface, comprising:
- a frame body;
- ground engaging members coupled to the frame body;
- an engine system coupled to the frame body;
- a milling platform coupled to the engine system, rotatably driven by a shaft about an axis, the milling platform including a circumferential outer surface defined about the axis and a mating surface disposed along the outer surface, the mating surface including a fastener base opening and a pin base opening, and a bit holder including a cutter bit, the bit holder having a radially inward facing surface engaging the corresponding mating surface of the milling platform, the radially inward facing surface including a fastener bit holder opening in alignment with the corresponding fastener base opening of the milling platform to receive a fastener, and a pin bit holder opening in alignment with the corresponding pin base opening of the milling platform to receive a pin, wherein the fastener and the pin couple the bit holder to the milling platform.
Dependencies are inferred from the claim text.