A cutting apparatus and a method for chamfering a film stack using the cutting apparatus. The chamfering method reduces microcracks generated in the film stack during curved surface chamfering, reduces the maximum stress applied to the film stack, prevents lifting, and enables processing of a curved surface.

A milling machine, in particular a hand-held milling machine, for milling bevels and fillets, having a housing in which a drive device and a spindle are mounted, wherein the spindle is configured to receive at least one cutting device and is connected to the drive device via at least one transmission. Additionally, a rebound damper for protecting the transmission is provided on the spindle.

Broadly contemplated herein, in accordance with at least one embodiment, is a multi-flute end mill configuration that maintains circumferential spacing between the rake surface and clearance surface adjoining two adjacent end face cutting edges, respectively, regardless of the number of flutes and the desired end face configuration.

A chamfer tool which comprises a tool holder. The tool holder extends along a central axis and comprises a plurality of slot-shaped cutting insert receptacles, each having two opposing lateral abutment surfaces and a base abutment surface arranged between the two lateral abutment surfaces and extending transversely thereto. The chamfer tool further comprises a plurality of cutting inserts, which are fixed in the plurality of cutting insert receptacles in a firmly bonded manner, wherein each of the cutting inserts comprises two opposing lateral surfaces, which abut against or are connected in a firmly bonded manner to the two lateral abutment surfaces of the respective cutting insert receptacle, and a lower surface arranged between the two lateral surfaces and extending transversely thereto, wherein the lower surface abuts against or is connected in a firmly bonded manner to the base abutment surface of the respective cutting insert receptacle. The cutting inserts project out of the first cutting insert receptacles both in an axial direction, which is parallel to the central axis of the tool holder, and transversely to the axial direction. Each of the cutting inserts comprises a main cutting edge which is oriented at a first acute angle to the central axis of the tool holder.

A milling tool for producing chamfer surfaces at workpieces. It has a cylindrical shaft and a cutting part, which has at least two end cutting edges, which are each located on a cone jacket surface and which run in a spiraled convex manner in the direction of rotation, and which each extend from a radially outer cutting corner to an inner cutting corner on the end side. To broaden the area of application of the milling tool to processes, such as the ramping or the linear diagonal plunging, respectively, the circular milling, the spot-drilling, or the waterline milling, the end cutting edges merge at the inner cutting corner into center cutting edges, which are located on a cone jacket surface with a tip angle of above 180, and which run with a positive chip angle into a region of the milling cutter center located in the milling cutter core.

A chamfering device includes: a main body including, at a proximal end side thereof, a shank to be attached to a main shaft of a machine tool, the main body including, at a distal end side thereof, a shaft portion extending in a rotational axis direction; a movable body whose proximal end portion is mounted to the shaft portion, the movable body being configured to rotate together with the shaft portion and be movable in the rotational axis direction; an urging member configured to urge the movable body in a direction toward the distal end of the main body; a chamfering tool mounted to a distal end portion of the movable body and configured to rotate together with the movable body to perform chamfering on an edge portion of a workpiece; and a following member mounted to the movable body such that a position of the following member relative to the movable body in the rotational axis direction is invariable and the following member is rotatable relative to the movable body, the following member being configured such that a distal end thereof comes into contact with a surface of the workpiece.

An insert is provided, ensuring to vary the cutout angle of the cutting edge without replacing the body, and to prevent the change in the cutout angle of the cutting edge in the cutting process. The insert includes a constraining part, a through hole, and a blade. The blade includes a cutting edge for the cutting process. An outer surface of the constraining part around the central axis includes a pair of first constraining surfaces, and a pair of second constraining surfaces. The cutting edge in the state where the pair of first constraining surfaces are fixed becomes non-parallel to the cutting edge in the state where the constraining part is rotated around the central axis from the fixed state of the pair of first constraining surfaces to place the pair of second constraining surfaces on the same surface on which the pair of first constraining surfaces have been fixed.

Various components of an electronic device housing and methods for their assembly are disclosed. The housing can be formed by assembling and connecting two or more different sections together. The sections of the housing may be coupled together using one or more coupling members. The coupling members may be formed using a two-shot molding process in which the first shot forms a structural portion of the coupling members, and the second shot forms cosmetic portions of the coupling members.

A machining system includes a machining unit and a moving apparatus configured to move the machining unit. The machining unit includes a rotating tool for rotating about an axis in a vertical direction, an upper surface abutting member configured to be abutted against an upper surface of a work, an end face abutting member configured to be abutted against an end face of the work between an upper edge and an lower edge of the work, and a vertical moving unit configured to change a position of the upper surface abutting member in the vertical direction with respect to the rotating tool. The rotating tool includes a machining portion main body, a first machining portion provided on a lower side of the machining portion main body, and a second machining portion provided on an upper side of the machining portion main body.

An example end mill includes a shaft, a cutting head positioned on one end of the shaft, and an edge relief cutting head positioned on the shaft spaced apart from the cutting head. The portion of the shaft between the cutting head and the edge relief cutting head has a diameter that is less than the diameters of the cutting head and the edge relief cutting head. The end mill is rotated around a longitudinal axis of the end mill and revolved around a central axis of a hole to be cut, with the longitudinal axis radially offset from the central axis, to cut the hole with the cutting head and cut an edge relief in a leading edge of the hole with the edge relief cutting head.