Abstract: A milling device for excavating mining materials is disclosed. The milling device comprises a milling drum rotatable about a drum axis; a first group of excavating heads arranged around a periphery of the milling drum and driven to rotate about a first rotational axis extending substantially radially to the drum axis; and a second group of excavating heads arranged around the periphery of the milling drum and rotatable about a second rotational axis extending substantially radially to the drum axis. The first group of excavating heads includes a plurality of first excavating tools configured to perform a first, cutting operation, and the second group of excavating heads includes a plurality of second excavating tools configured to perform a second excavating operation different from the first, cutting operation.

Abstract: A milling device is disclosed. The milling device may have a shaft. The shaft may have a shaft axis (A). The milling device may also have a spindle drum rotatably mounted relative to the shaft axis (A) and rotatable about a spindle drum axis (B) coaxial to the shaft axis (A). Further, the milling device may have a plurality of tool spindles rotatably mounted in the spindle drum and rotatable about tool spindle axes (D). Each tool spindle axis (D) may be parallely arranged and spaced apart from the shaft axis (A) and may have a same distance to the shaft axis (A). The milling machine may also have a plurality of machining tools carried by the tool spindles. At least two of the plurality of machining tools may be positioned displaced from one another in a direction of the shaft axis (A).

Abstract: The present disclosure relates to a mobile mining machine which may comprise a movable machine base frame, a rotatable tool drum and including excavating tools. The mobile mining machine may further comprise a cantilever unit including a front support arm part and a base part, and a pivotal device to pivot the cantilever unit. The mobile mining machine may further comprise a tilt device to tilt the cantilever unit and a rotary mechanism to rotate the support arm part and the tool drum. Thus, a mobile mining machine with which tunnels, galleries or shafts may be continuously driven in even in hard rock with a high mining output and low tool wear may be provided.

Abstract: A milling device is disclosed. The milling device may have a shaft. The shaft may have a shaft axis (A). The milling device may also have a spindle drum rotatably mounted relative to the shaft axis (A) and rotatable about a spindle drum axis (B) coaxial to the shaft axis (A). Further, the milling device may have a plurality of tool spindles rotatably mounted in the spindle drum and rotatable about tool spindle axes (D). Each tool spindle axis (D) may be parallely arranged and spaced apart from the shaft axis (A) and may have a same distance to the shaft axis (A). The milling machine may also have a plurality of machining tools carried by the tool spindles. At least two of the plurality of machining tools may be positioned displaced from one another in a direction of the shaft axis (A).

Abstract: The present disclosure relates to a mobile mining machine which may comprise a movable machine base frame, a rotatable tool drum and including excavating tools. The mobile mining machine may further comprise a cantilever unit including a front support arm part and a base part, and a pivotal device to pivot the cantilever unit. The mobile mining machine may further comprise a tilt device to tilt the cantilever unit and a rotary mechanism to rotate the support arm part and the tool drum. Thus, a mobile mining machine with which tunnels, galleries or shafts may be continuously driven in even in hard rock with a high mining output and low tool wear may be provided.

Abstract: A mobile mining machine includes a movable machine base frame having a boom, a swinging device for swinging the boom, and a tilting device for tilting the boom. At least one tool drum is coupled to the boom for rotation about a drum axis and rotatable tool carriers are arranged on a circumference of the tool drum. The boom has a supporting arm, on which the tool drum is mounted, and a separate swinging base, which is swingable about a swing axis in relation to the machine base frame by the swinging device. The supporting arm and the swinging base are connected to one another by a system of guide bars, by way of which a setting angle of the drum axis in relation to the swing axis is adjustable.

Abstract: A mobile mining machine includes a movable machine base frame having a boom, a swinging device for swinging the boom, and a tilting device for tilting the boom. At least one tool drum is coupled to the boom for rotation about a drum axis and rotatable tool carriers are arranged on a circumference of the tool drum. The boom has a supporting arm, on which the tool drum is mounted, and a separate swinging base, which is swingable about a swing axis in relation to the machine base frame by the swinging device. The supporting arm and the swinging base are connected to one another by a system of guide bars, by way of which a setting angle of the drum axis in relation to the swing axis is adjustable.

Abstract: A roller drill for removing material, such as in particular rock, minerals or the like, according to the undercutting principle, comprising a cutting face which is formed concentrically around a central axis and widens conically toward an end face of the roller drill, and includes a supporting body which is arranged on the inner side of the cutting face and extends up to the end face of the tool. In order to provide a roller drill or a roller bit of which the tool life or service life is improved compared with the prior art, the cutting face is made of a harder material than the supporting body and the supporting body forms an annular web which is conical at least at an outer circumferential wall and which defines with its inner circumferential wall a free space at the end face of the tool. The tool can resharpen itself automatically due to the free space and the dissimilar material combination.

Abstract: An apparatus for the milling and/or drilling cutting of materials, in particular for the removal of rock, minerals or coal, with a tool drum which is mounted on a drum carrier rotatably about a drum axis, in which a plurality of tool shafts, which carry cutting tools at their ends projecting from the tool drum, are rotatable drivable mounted, at least two of the tool shafts being drivable by a common gear drive which has power take-off gearwheels arranged fixedly in terms of rotation on the tool shafts, and a common drive element which cooperates with the power take-off gearwheels. The drive element and the tool drum being rotatable in relation to one another and the shaft axes of the tool shafts standing transversely to the drum axis.

Abstract: A roller drill for removing material, such as in particular rock, minerals or the like, according to the undercutting principle, comprising a cutting face which is formed concentrically around a central axis and widens conically toward an end face of the roller drill, and includes a supporting body which is arranged on the inner side of the cutting face and extends up to the end face of the tool. In order to provide a roller drill or a roller bit of which the tool life or service life is improved compared with the prior art, the cutting face is made of a harder material than the supporting body and the supporting body forms an annular web which is conical at least at an outer circumferential wall and which defines with its inner circumferential wall a free space at the end face of the tool. The tool can resharpen itself automatically due to the free space and the dissimilar material combination.

Abstract: An apparatus for the milling and/or drilling cutting of materials, in particular for the removal of rock, minerals or coal, with a tool drum which is mounted on a drum carrier rotatably about a drum axis, in which a plurality of tool shafts, which carry cutting tools at their ends projecting from the tool drum, are rotatable drivable mounted, at least two of the tool shafts being drivable by a common gear drive which has power take-off gearwheels arranged fixedly in terms of rotation on the tool shafts, and a common drive element which cooperates with the power take-off gearwheels. The drive element and the tool drum being rotatable in relation to one another and the shaft axes of the tool shafts standing transversely to the drum axis.

Abstract: The invention relates to a device for milling rock or other materials. Said device comprises a spindle drum (13) which is rotatably mounted on a drum support (11) and in which a plurality of tool spindles (22) are received to be rotatable about spindle axes in a manner off-center of the drum axis (43). The tool spindles, at their ends projecting from the spindle drum, carry machining tools (41). The invention is characterized in that at least two of the tool spindles can be driven by a common gear drive which comprises output gears (24), permanently disposed on the tool spindles, and a common drive element (25) interacting with the output gears. The drive element and the spindle drum (13) can be rotated in relation to each other.

Abstract: A drive device for rotating tools operating with oscillation superimposition, including a drive housing, a carrier sleeve mounted rotatably within the drive housing, a drive shaft mounted rotatably therein, a tool carrier to receive working tools and an oscillation-generating mechanism for generating the oscillation superimposition for the one or more tool carriers. The oscillation-generating mechanism for each tool carrier includes at least two intermediate shafts. The intermediate shafts are connected to the one or more tool carriers via an eccentric component part may be driven synchronously.

Abstract: The invention relates to a device for milling rock or other materials. Said device comprises a spindle drum (13) which is rotatably mounted on a drum support (11) and in which a plurality of tool spindles (22) are received to be rotatable about spindle axes in a manner off-center of the drum axis (43). The tool spindles, at their ends projecting from the spindle drum, carry machining tools (41). The invention is characterized in that at least two of the tool spindles can be driven by a common gear drive which comprises output gears (24), permanently disposed on the tool spindles, and a common drive element (25) interacting with the output gears. The drive element and the spindle drum (13) can be rotated in relation to each other.

Abstract: A drive device for rotating tools operating with oscillation superimposition, including a drive housing, a carrier sleeve mounted rotatably within the drive housing, a drive shaft mounted rotatably therein, a tool carrier to receive working tools and an oscillation-generating mechanism for generating the oscillation superimposition for the one or more tool carriers. The oscillation-generating mechanism for each tool carrier includes at least two intermediate shafts. The intermediate shafts are connected to the one or more tool carriers via an eccentric component part may be driven synchronously.

Abstract: The invention provides an apparatus for excavating rock, minerals and the like, which includes a hub 22 connected to a rotatable drive. Cutting elements such as picks 20a are supported by tool holders connected to the hub. The picks 20a project radially from the hub, and are arranged in oblique relationship to the axis of rotation of the hub. The drive means is preferably designed to impart an eccentric, superimposed percussive action on the hub 22. During use the hub 22 is positioned facing a rock surface and urged along the rock face in transverse relationship to the axis of rotation of the hub, thereby causing the picks 20a to undercut an adjacent region of rock, and thereby excavating successivel layers of rock.

Abstract: A combination of conventional or superimposed percussive slot-cutting tools for creating slots and grooves, with eccentric, superimposed percussive, counterbalanced planar milling tools for excavating floors, walls, rocks, minerals and the like.

Abstract: An apparatus for treating rock, minerals or similar materials includes at least two tool-bearing sleeves supported by bearings. The tool-bearing sleeves are arranged in eccentric relationship to a common drive shaft. The tool-bearing sleeves are counterbalanced with reference to respective counterweights.

Abstract: A rock-cutting tool includes a sleeve equipped with cutting elements and supported on a shaft, the sleeve being separately rotatable and eccentrically arranged in relation to the shaft whereby, in use, rotation of the shaft imparts a radially oscillating motion on the sleeve. At least one adjustable counterweight is connected to the shaft and located within the sleeve.

Abstract: An apparatus for percussively milling slots in rock or the like includes a flat disk-like radial boring tool mounted on a drive shaft which is rotated slowly against the work while being driven percussively and radially outwardly toward the work in the neighborhood of, for example, forty times for every revolution of the tool.