Abstract: Circular saws having a blade that moves relative to a stationary base structure during operative use of the circular saws to cut a workpiece and methods of detecting a kickback condition of such circular saws. The circular saws include a base structure, a user-actuated assembly, an attachment structure, and a controller. The attachment structure is configured to permit constrained relative motion between the base structure and the user-actuated assembly in a motion direction and during operative use of the circular saw to cut the workpiece. A motion sensor is configured to generate a motion signal indicative of motion of the user-actuated assembly along the motion direction. The controller is programmed to initiate a kickback response of the circular saw responsive to the motion signal being indicative of a kickback condition of the circular saw.

Abstract: Handheld power tools with kickback detection and methods of detecting a kickback condition of a handheld power tool are disclosed herein. The methods include moving an implement of the handheld power tool within an implement motion plane and in detecting motion of the handheld power tool. The methods also include determining that the kickback condition exists based, at least in part, on the motion of the handheld power tool. In some embodiments, the handheld power tool is a circular saw that includes a user-actuated assembly. The user-actuated assembly includes a motion sensor, a controller, and a motor. The circular saw also includes a workpiece support and a pivot. The motion sensor is configured to detect acceleration along an acceleration detection axis that extends a threshold pivot axis-acceleration axis distance of at most 4 cm from a pivot axis of the pivot.

Abstract: Expansion sleeves are disclosed comprising a body and a flange. The body may be generally cylindrical and includes an inner wall, an outer wall integrally formed with the inner wall, and a pressurized fluid chamber located radially between and encapsulated in the inner wall and the outer wall. The front flange extends radially outward from the outer wall of the body. The front flange may comprise a tool support connection structured and arranged to fasten the front flange to a tool support member. The tool support member may include a pressurized fluid system that communicates with the pressurized fluid chamber of the expansion sleeve. The expansion sleeves may be secured to the tool support member by mechanical fasteners, threading, or combinations thereof. During operation, pressurized fluid in the tool support member communicates with the pressurized fluid chamber of the expansion sleeve to clamp a tool shank.

Abstract: A cutting tool is provided having a hydrostatic bearing support to minimize bending of the tool when in use. More specifically, a tool is provided comprising a body, a cutting insert, at least one flow pressure supply channel, a hydrostatic bearing, and wherein the flow pressure supply channel is in communication with the hydrostatic bearing, and optionally at least one coolant channel in communication with the cutting insert, and wherein the flow pressure supply channel is in communication with a supply reservoir for containing a lubricant or coolant. The supply reservoir is ultimately in communication with a pump to supply pressure to the hydrostatic bearing when the tool is operational.

Abstract: A cutting tool for cutting a metal workpiece includes a first portion, and a second portion. The first portion includes a first outer surface, a first shaft, and at least one cutting insert attached to the first outer surface. The second portion includes a second outer surface and a second shaft. The first and second shafts are disposed coaxially around an axis. The first and second outer surfaces are disposed adjacent to one another. The first and second outer surfaces are configured to rotate around the axis in opposite directions.

Abstract: A turning toolholder includes a shank, a club head, and a clamp and a clamp screw for clamping a cutting insert. The club head includes a clamp coolant supply hole in fluid communication, a flank coolant supply hole and an auxiliary rake coolant supply hole, all in fluid communication with the main coolant supply hole. Coolant is supplied through a rake coolant exit opening formed in the forward nose portion of the clamp to direct coolant to the top rake surface of the cutting insert, and coolant is supplied through a flank coolant exit opening located below the insert-receiving pocket to provide coolant to the side flank surfaces of the cutting insert. In addition, an auxiliary rake coolant supply housing formed on a top surface of the club head supplies additional coolant to the top rake surface of the cutting insert during high heat applications.

Abstract: A method for additively manufacturing a workpiece having lateral workpiece dimensions includes obtaining a first data set defining the workpiece in layers arranged on top of the other. The method includes providing a manufacturing platform having lateral platform dimensions that are greater than the lateral workpiece dimensions. The method includes providing a structuring tool movable relative to the manufacturing platform. The method includes selecting an individual manufacturing region on the manufacturing platform. The method includes obtaining a second data set that represents individual layer deformations that are dependent on the selected manufacturing region. The method includes producing a defined material layer of the workpiece in the manufacturing region by controlling the structuring tool using the first and second data sets. The method includes repeating the producing in order to produce further defined material layers one on top of the other using the first data set and the second data set.

Abstract: A cutting tool, such as a reamer, includes a rear machine connection member, a center tube, a front cutting ring, and a rear cutting ring. The front cutting ring includes a sleeve member and one or more cutting head assemblies. Each cutting head assembly includes at least one support arm extending radially outwardly from a rotational axis, RA, of the cutting tool, and a cutting head supported by the at least one support arm. The at least one support arm of the cutting head assembly defines a fluid dynamic structure for directing fluid flow in a desired direction to facilitate chip evacuation during a cutting operation. The fluid dynamic structure can be an airfoil, a turbine blade, or similar structure that produces a directed fluid flow.

Abstract: A cutting tool system component, in particular a cutting tool or a cutting tool holder, is described. The cutting tool system component comprises a base body comprising a fluid inlet for supplying cooling and/or lubricating fluid to the cutting tool system component. A fluidic actuator and/or a fluidic detector is arranged inside the base body that has or have a fluid-conducting connection to the fluid inlet.

Abstract: The invention relates to a device for constructing a laminar body from a plurality of superimposed layers of free-flowing material, in particular particulate material, and a build platform within a working area. The layers are solidified in locally predetermined regions by the action of binders and are joined together so that at least one moulded body is formed by the solidified and joined regions of the layers. The device comprises a discharging device movable back and forth over the working area in at least one discharge direction and having at least one discharge opening from which the free-flowing material can be discharged in individual superimposed layers during the movement of the discharging device.

Abstract: A cutting tool, such as a reamer, includes a rear machine connection member, a center tube, a front cutting ring, and a rear cutting ring. The front cutting ring includes a sleeve member and one or more cutting head assemblies. Each cutting head assembly includes at least one support arm extending radially outwardly from a rotational axis, RA, of the cutting tool, and a cutting head supported by the at least one support arm. The at least one support arm of the cutting head assembly defines a fluid dynamic structure for directing fluid flow in a desired direction to facilitate chip evacuation during a cutting operation. The fluid dynamic structure can be an airfoil, a turbine blade, or similar structure that produces a directed fluid flow.

Abstract: The invention relates to a device for producing three-dimensional models, comprising a coater, which includes an ejection opening, at least one print head, which is mounted on a print axis, the ejection opening of the coater being disposed toward the top in the coating direction, and the print head being disposed counter to the coating direction with the opposite orientation on the printing axis behind the coater in the coating direction; the invention also relates to a method for producing three-dimensional models.

Abstract: The invention relates to a device for constructing a laminar body from a plurality of superimposed layers of free-flowing material, in particular particulate material, and a build platform within a working area. The layers are solidified in locally predetermined regions by the action of binders and are joined together so that at least one moulded body is formed by the solidified and joined regions of the layers. The device comprises a discharging device movable back and forth over the working area in at least one discharge direction and having at least one discharge opening from which the free-flowing material can be discharged in individual superimposed layers during the movement of the discharging device.

Abstract: The invention relates to a device for constructing a laminar body from a plurality of superimposed layers of free-flowing material, in particular particulate material, and a build platform within a working area. The layers are solidified in locally predetermined regions by the action of binders and are joined together so that at least one moulded body is formed by the solidified and joined regions of the layers. The device comprises a discharging device movable back and forth over the working area in at least one discharge direction and having at least one discharge opening from which the free-flowing material can be discharged in individual superimposed layers during the movement of the discharging device.

Abstract: A lightweight cutting tool, such as a reamer, includes a front cutting body, a front cutting ring, a center tube, a rear cutting ring and a rear machine connection member. An arm assembly of the front and rear cutting heads includes one or more leading arms, one or more trailing arms and a cutting head supported by the leading and trailing arms. The leading arms and the trailing arms curve in opposite directions. To reduce weight and moment of inertia of the reamer, a cross-sectional area of the leading arms and the trailing arms is largest proximate the sleeve member and is smallest proximate the cutting head. In addition, the front cutting body, the front and rear cutting rings and the center tube may be made by additive manufacturing. Fluid can be transported entirely through the reamer to the cutting insert/workpiece interface and the guide pad/workpiece interface.

Abstract: A lightweight cutting tool, such as a reamer, includes a front cutting body, a front cutting ring, a center tube, a rear cutting ring and a rear machine connection member. An arm assembly of the front and rear cutting heads includes one or more leading arms, one or more trailing arms and a cutting head supported by the leading and trailing arms. The leading arms and the trailing arms curve in opposite directions. To reduce weight and moment of inertia of the reamer, a cross-sectional area of the leading arms and the trailing arms is largest proximate the sleeve member and is smallest proximate the cutting head. In addition, the front cutting body, the front and rear cutting rings and the center tube may be made by additive manufacturing. Fluid can be transported entirely through the reamer to the cutting insert/workpiece interface and the guide pad/workpiece interface.

Abstract: Systems and methods of evaluating single points of failure in a computer network are provided. The system includes a processor configured to receive at least two polylines approximating respective network spans. For each point in a set of points representing geographic locations, the processor can determine a level of risk that an event at the point will affect at least the two polylines. The processor can determine an overall risk of failure by combining the level of risk for each point in the set of points. The processor can output a report indicating at least one point determined to be a potential SPoF based on the level of risk for the at least one point.

Abstract: A safety system having at least one safety module, which is associated with a system controlled by a controller. A portable augmented reality unit is provided. The augmented reality unit has a camera and a projection unit. The safety module has a connection module. The connection module is designed to provide a data connection with the augmented reality unit, and further, a data connection with the controller. By means of the augmented reality unit, a code identifying the system is captured and transmitted to the connection module. Depending on the code captured by the augmented reality unit, parameters of operating elements are supplied. Based on the parameters, the operating elements are made visible by means of the projection unit of the augmented reality unit.

Abstract: A method is disclosed for correcting deviations in a production process of an article. Initially, measured 3D surface coordinates of a first article are obtained and used to create a virtual image of the first article that is displayed on a display apparatus that is fastened to the user's head. The virtual image is superimposed on a predefined model image of the article which is also displayed on the display apparatus to enable the user to detect any region(s) where the measured first article deviates from the predefined model. The user is then able, via a gesture (e.g., hand movement) or head movement, to select a particular region of deviation and control the desired corrective action to be performed on subsequently produced articles. The present method thereby enables the experienced user to subjectively select the region(s) requiring correction action and the degree and type of corrective action to be taken.

Abstract: The invention relates to a device for constructing a laminar body from a plurality of superimposed layers of free-flowing material, in particular particulate material, and a build platform within a working area. The layers are solidified in locally predetermined regions by the action of binders and are joined together so that at least one moulded body is formed by the solidified and joined regions of the layers. The device comprises a discharging device movable back and forth over the working area in at least one discharge direction and having at least one discharge opening from which the free-flowing material can be discharged in individual superimposed layers during the movement of the discharging device.