The present application provides a method for machining a flange face of an aluminum alloy hub, comprising the steps of: (I) pre-machining a hub flange; (II) machining two times with a 120 R3 boring tool with a total machining amount of 2 mm, and then reserving a machining allowance of 2.4 mm on the flange face blank after processing; (III) machining two times with the 120 R3 boring tool with a total machining amount of 2 mm, and then reserving a machining allowance of 0.4 mm on the flange face blank after processing; (IV) machining with a 95 R0.8 hook tool, and then reserving a machining allowance of 0.05 mm on the flange face after processing; and (V) machining with the 95 R0.8 hook tool, then machining the remaining flange allowance, thus completing the machining.

For producing a cylindrical surface that has a surface structure of predetermined geometry suitable for application of material by thermal spraying, a geometrically predetermined groove structure of minimal depth and width is introduced into the surface by a tool embodied as a follow-on tool in that a groove cross-section is processed successively to a final size. In order for the surface to be producible in mass production with constant quality, the groove structure is worked in such that first a base groove is introduced with a groove bottom width that is smaller than the groove bottom width of the finished groove. Subsequently, at least one flank of the base groove is processed for producing an undercut groove profile by a non-cutting action or cutting action wherein the introduced groove structure is deformed in such a way that the groove openings are constricted by upsetting deformations of material.

An aluminum alloy hub lathe fixture, which includes a main plate, a mounting seat, a hydraulic power clamping head, a pull rod, a sliding seat, a connecting pin, a fan-shaped clamping jaw, a sealing cover, a deflection block, a deflection shaft, a centrifugal force balance block, a centrifugal mechanism base, a spring and screws, wherein the main plate and the mounting seat are connected together through screws, so that a housing of the entire fixture is formed; the hydraulic power clamping head is fixed on the mounting seat through screws; one end of the pull rod is mounted on the hydraulic power clamping head through screws, and the other end of the pull rod is connected with the sliding seat through the connecting pin; the fan-shaped clamping jaw is fixed on the sliding seat through screws.

A coated tool may include a base member including a first surface and a coating layer located on the base member. The coating layer may include a first layer, a second layer, and a plurality of voids. In an inclination angle distribution graph in which an inclination angle formed by a normal line of a {112} surface that is a crystal surface of crystal grains of the first layer with respect to a normal line of a surface of the first layer is measured, the measured inclination angles within a range of 0 to 45? are divided into pitches of 0.25?, and degrees existing in each division are accumulated, the highest peak exists in a range of 0 to 10?. The total number of degrees existing within this range accounts for 45% or more of all degrees.

An entry sheet of the present invention is used in cutting a fiber reinforced composite material and/or a metal. Moreover, in a cutting method of the present invention, cutting of a fiber reinforced composite material and/or a metal is performed using the entry sheet.

A solid-lubricated metal cutter and processing method relates to the technical field of metal cutters. A surface texture morphology is worked out on a metal cutter, a solid lubricant is filled into the surface texture morphology, and a convex dam is arranged on the cutter surface on which surface texture morphology is located at a chip flow side. The surface texture morphology has micro-pit and micro-boss features, and can exert antifriction effect of a solid lubricant and anti-adhesion effect of micro-protrusions. The convex dam is arranged at an end of the micro-texture region away from the cutting blade, so that a part of the solid lubricant flows back to the texture region and thereby the utilization efficiency and retentiveness of the solid lubricant are improved.

The disclosure concerns a system for hole drilling in an object (400) comprising a core drilling machine (100), a core drill bit (200) and a reaction bar (300) arranged for transmitting rotating reaction forces from the core drilling machine (100) to the object (400), where the core drill bit (200) is connected to the core drilling machine (100) and the core drilling machine (100) is equipped with a power source (108) in order to apply a rotating force to the core drill bit (200), and where the core drill bit (200) has an axially extending tubular shaft (202) with an inner envelop surface (203) defining an inner periphery (204) of the core drill bit (200), wherein the reaction bar (300) is non-rotatably connected to the core drilling machine (100) and arranged inside the inner periphery (204) of the axially extending tubular shaft (202) of the core drill bit (200). The disclosure further concerns a core drill bit (200) and a core drilling machine (100) for hole drilling in an object (400) and a method for hole drilling in an object (400) with a core drilling machine (100), a core drill bit (200) and a reaction bar (300) arranged for transmitting rotating reaction forces from the core drilling machine (100) to the object (400).

A hand drilling tool of one or more elements coupled therebetween comprising: a chuck (2) tightened in the spindle of a tool machine allowing the tool rotation; an elongated point body (3) with tool diameter (2) having at least four helical grooves developing longitudinally on the point body and defining at least two primary cutters, and at least two secondary cutters; said two primary cutters forming a tip angle; said secondary cutters having a discharge surface S; said discharge surface S is shaped so as to create an interruption between the secondary cutters and the primary cutters by contributing to reduce the operator's effort, to reduce the temperature and to promote the discharge of the worked material. Said point body (3) is formed by a substantially cylindrical first portion and a substantially conical second portion with taper towards the end of the tool.

A tool for machining an outer circumferential surface of a workpiece, with an interface adapted for fastening the tool to a counter interface, and a base body which is cylindrical at least in sections. The base body has a circumferential wall encompassing a mounting space and is configured to be open at the frontal side in such a way that the workpiece can be at least partially accommodated in the mounting space. At least one cutting edge engaging in the mounting space is arranged on the base body for the machining of the outer circumferential surface of the workpiece. The circumferential wall has at least one chip passing recess which is arranged relative to the at least one cutting edge in such a way that chips removed by the at least one cutting edge during the machining of the workpiece can exit through the at least one chip passing recess from the mounting space into an outer surrounding area of the base body.

A coated tool disclosure includes a base body and a coating layer. The coating layer includes crystals having a cubic structure. The coating layer has a striped structure in cross-sectional observation by a transmission electron microscope. The striped structure has two layers alternately located in a thickness direction. The two layers contain Si and at least one metal element. The two layers each contain crystals having the cubic structure. When a lattice constant of a crystal having the cubic structure in one layer of the two layers is referred to as a first lattice constant and a lattice constant of a crystal having a cubic structure in the other layer of the two layers is referred to as a second lattice constant, a difference between a magnitude of the first lattice constant and a magnitude of the second lattice constant is greater than 0% and 0.1% or less.