KENNAMETAL INC.

A milling tool cutter includes a tool body, a plurality of cutting inserts, a plurality of clamping studs, a clamping ring, and a detachable fastening member. The tool body has a plurality of pockets disposed circumferentially around the tool body. Each of the cutting inserts is disposed in one of the respective pockets. Each of the clamping studs is attached to one of the respective cutting inserts. The clamping ring is disposed within the tool body. The clamping ring includes a face surface, a seating surface, and a circumferential outer surface extending between the face surface and the seating surface. The seating surface sits against the plurality of clamping studs. The detachable fastening member is disposed in an attached state fixedly attaching the clamping ring to the tool body causing the clamping studs and their respective cutting inserts to be fixedly attached to the tool body.

A cutting system includes a rotatable transport member, a plurality of tool holders, and a plurality of cutting tools. A plurality of tool holders is attached to the rotatable transport member. The plurality of tool holders is spaced apart along the rotatable transport member and configured to passively rotate relative to the rotatable transport member. The plurality of cutting tools is rotatably attached to each tool holder. Each of the cutting tools is configured to passively rotate around different axis than an axis around which the tool holder passively rotates.

A powder feeder system includes multiple electro-mechanical powder feeders structured for conveying powder compositions to a mixing hopper. A programmable logic control (PLC) can be incorporated into the multiple feeder system. The PLC can be programmed for determining a real-time powder flow rates for the powder feeders, receiving recipe data input related to creating a resultant coating composition, comparing powder composition flow rate data to the recipe data, and adjusting the operational aspects of motors and metering wheels associated with the multiple powder feeders in response to comparing the powder composition flow rate data to the recipe data. In various applications, the powder feeder system can be a subsystem of a thermal spray system configured for hardfacing and coating work pieces such as drill bits, road mills, shafts, mining tools, and/or stabilizers.

A rotary cutting tool includes a support structure having a central hub located at an axially rearward end of the rotary cutting tool. A plurality of primary support members extends from the central hub in different axial and radial directions in three-dimensional space with respect to a central, rotational axis of the rotary cutting tool. The support structure may include one or more secondary support members extending from a primary support member in different axial and radial directions in three-dimensional space, and one or more tertiary support members to increase stiffness of the support structure. The central hub extends in a plane that is substantially perpendicular to the central, rotational axis of the rotary cutting tool. In one embodiment, each of the plurality of primary support members have a different physical dimension.

A cutting tool comprising at least one cavity spaced apart from an outer contour of the cutting tool by a wear layer, wherein a thickness of the wear layer corresponds to a wear limit of the cutting tool, wherein the cavity is fluidly connected to a supply line arranged within the cutting tool and configured so as to provide a predetermined pressure in the cavity, wherein a pressure sensor fluidly connected to the supply line indicates a wear of the cutting tool when the thickness of the wear layer is reduced to the extent that a pressure change occurs within the supply line.

The invention relates to a cutting tool having at least one cavity arranged in the cutting tool, spaced apart from an outer contour of the cutting tool by a wear layer, wherein a thickness of the wear layer corresponds to a wear limit of the cutting tool, wherein an indicator substance is arranged in the cavity.

A cutting tool mounting assembly includes a base that defines a receptacle. A bushing is configured to be received in the receptacle and includes an aperture. A rotatable cutting tool is received in the aperture of the bushing. The rotatable cutting tool includes a cutting tip. The cutting tool mounting assembly includes a split, modular and wireless wear detection system including a target proximate the cutting tip for emitting a signal representative of the wear of the cutting tip, a sensor element for detecting the signal emitted by the target at a spaced apart location with respect to the target, a data recording and data transmitting device for recording data from the sensor element and for wirelessly communicating the data to a processor and/or a display device.

A retainer for a tool comprises an annular body, a plurality of protruding bosses, and a slot formed through the body in an axial direction. The annular body defines a central opening adapted to receive a tool therein in the axial direction and includes a first end having a first external diameter, and a second end having a second external diameter. The plurality of protruding bosses extend into the opening from an internal side of the body defining the central opening. In a resting state of the body, the first external diameter and the second external diameter are distinct from one another. The body is elastically deformable into a compressed state wherein the first external diameter and the second external diameter are equal.

A modular drill includes a drill body, an insert, and a retaining member. The drill body includes a center hole extending through a first surface of the drill body, and a side hole extending at an actuation location through a second surface of the drill body. The center hole and the side hole intersect within the drill body. The insert is moveably disposed in the center hole. The retaining member is threadedly attached to and moveably disposed in the side hole. The retaining member includes a clamp surface and a bump surface. The clamp surface is disposed closer to the actuation location than the bump surface. When the retaining member is rotated in one direction the clamp surface forces the insert into a locked position. When the retaining member is rotated in another direction the bump surface bumps the insert out of the locked position.

A clamping assembly includes a base member having an internal bore, a lock rod within the internal bore of the base member and moveable between an unlocked position and a locked position, the lock rod including a lock rod cam surface and a first bearing, a crank wheel having an axis of rotation and a third bearing, and a linkage including a second bearing comprising an elongated cavity formed in an outer surface, a fourth bearing and a cam surface at one end thereof.