MILLING DEVICE Russian patent published in 2018 - IPC E21C25/06 E21C27/24 

FIELD: drilling of soil or rock.

SUBSTANCE: present invention relates to an underground or open-milling. Milling device comprises a shaft having a shaft axis, a spindle drum rotatably mounted relative to the shaft axis and rotatable about a spindle drum axis coaxial to the shaft axis, a plurality of tool spindles rotatable about the spindle drum and rotatable about tool spindle axes, a plurality of machining tools and a plurality of tool spindle receivers. Each axis of the tool spindle is parallel, spaced apart from the shaft axis and is located equidistant from the shaft axis. Plurality of machining tools are fixed in the tool spindles, wherein at least two of the plurality of machining tools are offset relative to each other in the direction of the shaft axis. Plurality of tool spindle receivers comprise tool spindles, including at least one spindle receiver of the first tool and at least one spindle receiver of the second tool, wherein at least one spindle receiver of the first tool is offset from at least one spindle receiver of the second tool in the direction of the shaft axis.

EFFECT: technical result is to provide deep and wide cutting of the milling material.

14 cl, 10 dwg