A machine is provided, including at least one cutting tool in the form of cutting head with coolant supplied for machining parts from flat material, wherein the machine also includes a coolant containment and recovery system which includes: a waste removal apparatus, a coolant guard having at least one wall bounding a containment forming area, wherein the coolant guard is fluidly connected to the waste removal apparatus, wherein in use: the coolant guard is located upon a plate to be machined; and the containment forming area becomes a containment area, within which the cutting tool and coolant are both located during the machining process, so that used coolant can be removed.

A device for mixing and supplying fluids comprises: a fixing unit provided with a first flow path through which a first fluid flows, a second flow path through which a second fluid flows, and a through-hole; and a rotating unit, which is rotatably provided on the through-hole so as to penetrate the fixing unit, and which is provided at the front end with a fixing hole into which a processing tool is inserted and fixed, and a communication part which communicates with the first flow path and the fixing hole, so as to mix the first fluid and the second fluid and supply the mixture to the processing tool.

A rotary part of a pump (200) is connected to a body member (110) to be rotatable together. When the body member is attached to a main shaft (20) of a machine tool (10), a rotation stopping pin (310) of a rotation stopping device (300) fits in a fitting hole (41) of the machine tool and abuts on a wall surface (41a) of the fitting hole, whereby the rotation stopping pin and a rotation stopping lever (340) axially move against an elastic force of a spring (320) and the rotation stopping lever disengages from an engagement hole (113) in the body member such that the body member becomes rotatable relative to a support part (150, 160) that rotatably holds the rotary part. A force detecting sensor (50) outputs a force detection signal indicating a force with which the rotation stopping pin is pressing against the wall surface.

Proposed is a lubrication system, in particular a single-duct minimum quantity lubrication system, having an aerosol generator, a spindle, a tool clamper arranged on the spindle and a rotary feedthrough arranged on the side of the spindle located opposite the tool clamper, the tool clamper, the spindle and the rotary feedthrough are penetrated by a duct, in the duct is arranged a spindle tube which improves the transport of aerosol, in particular the transport of lubricant particles and/or coolant particles, above all inside the spindle or motor spindle. Further, the spindle tube is mounted in the duct in an electrically insulating manner and/or in that the spindle tube is produced from a material that is not electrically conducting and/or in that the spindle tube and/or the duct is/are provided with at least one electrically insulating layer for coating the spindle tube and/or the duct in an electrically insulating manner.

A lubricating system with an aerosol generator, a spindle, a tool clamper arranged on the spindle, and a rotary feedthrough arranged on the side of the spindle lying opposite the tool clamper, a duct runs through the tool clamper, the spindle and the rotary feedthrough. A separate aerosol generator feeds aerosol into an aerosol line to a tool via the rotary feedthrough, spindle and tool holder to transport lubricant particles and/or coolant particles inside the spindle or motor spindle. A spindle tube is arranged in the duct and is mounted non-rotatably on a non-rotating portion of the rotary feedthrough and extends at least through a portion of the spindle in the direction of the tool clamper, and the aerosol generator is connected to the spindle tube, such that aerosol is guided through the spindle tube in the direction of the tool clamper and/or a tool clamped by the tool clamper.

A power tool including a housing with left and right side walls, a rear wall extending between the left and right side walls, a left angled wall extending between the left side wall and the rear wall and a right angled wall extending between the right side wall and the rear wall. The power tool also includes a handle extending from the housing and defining a gap between the handle and the rear wall of the housing, a motor located within the housing, a fan driven by the motor, and a spindle driven by the motor to rotate about an axis. The left and right angled walls converge inwardly toward the axis in a front-to-rear direction along the axis. The housing includes air intake openings located on the left and right angled walls. Rotation of the fan draws an airflow into the housing through the air intake openings.

A rotating cutting tool that is internally cooled by cryogenic fluid has a generally cylindrical outer shape. At least one flute is formed on the cutting tool and a cutting edge is formed on an outer edge of the flute for cutting a workpiece. An internal cold flow delivery path for cryogenic coolant is in proximity to the cutting edge. A coolant cavity is formed in the cutting tool for supplying cryogenic coolant to the internal cold flow delivery path and a return path for cryogenic coolant is downstream from the cold flow delivery path. An exhaust port is coupled to the return path for exhausting cryogenic coolant to atmosphere. The exhaust port is remote from the cutting edge so that the cryogenic coolant is exhausted away from the cutting edge and away from a workpiece so that the cryogenic coolant does not cool and toughen the workpiece.

A drive shaft for a machine tool, for example a core drilling machine, able to be connected to a drilling tool, in particular a core bit, is disclosed. The drive shaft contains a cavity which substantially extends over the whole length of the drive shaft and along the rotational axis. The cavity contains at least one inflow opening where, through the at least one inflow opening, water can be fed along the drive shaft into the drilling tool. In the drive shaft, an insertion device is provided in the cavity, through which water is guided for cooling the drive shaft, firstly, in a first direction and then in a second direction, where the water comes into direct contact with the inner side of the cavity at least in the first direction.

A feed unit for drilling and/or tapping comprising a housing, a quill in the housing movable between retracted and extended positions, the quill rotationally supporting a spindle for carrying a rotary tool, a screw for moving the quill between said positions, a ball spline shaft in the housing coaxial with the spindle, a ball spline nut having recirculating steel balls rolling in raceways on the ball spline shaft, the spindle radially supporting the ball spline shaft within the quill with zero clearance through the ball spline nut, rotation of the ball spline shaft being imparted to the spindle through the ball spline nut.

A coolant delivery system which serves to deliver a cooling agent whose purpose is to carry away the heat that is generated in the process of machining a toothed profile by means of a skiving wheel rotating about its rotary axis. The coolant delivery system provides for a delivery path section which, seen in a projection onto a plane extending orthogonal to the rotary axis, is arranged closer to the axis than the toothed profile of the skiving wheel and has a dimensional component in the axial direction.