179 results about "Undercut" patented technology

The invention relates to a process for roughening metal surfaces to improve adhesion of layers which are thermally sprayed onto the surface, in which, in a first process step, recesses or depressions (2) are introduced into the surface in a material-detaching or material-removing treatment so that the remaining metal of the surface forms raised microstructures (3), in particular projections, ridges, protuberances or bumps, with these microstructures being further worked in at least one further process step by shaping and / or breaking so that a significant proportion of the structures forms undercuts (4) in relation to the surface.

A method for manufacturing a cutting insert green body having undercuts includes providing a die cavity formed in closed top and bottom dies; closing a bottom of the die cavity by a bottom punch accommodated in a punch tunnel formed in the bottom die; filling the die cavity with a pre-determined amount of sinterable powder; moving a top punch towards the die cavity through a punch tunnel formed in the top die; compacting the powder by urging the top and bottom punches towards each other, thereby forming the green body; and moving the top die and punch away from the bottom die and punch, thereby enabling removal of the formed green body. An apparatus for manufacturing a cutting insert green body having undercuts includes top and bottom dies which abut each other and top and bottom punches which slide in their respective dies.

A cutting tool has a cutting insert secured in a tool shank by means of a clamping bolt, whereby two opposing side surfaces of a body portion of the cutting insert are located between two spaced apart protuberances of the tool shank. The body portion includes a cut-out extending between the two opposing side surfaces and opening out to a bottom surface. The cut-out includes an undercut with at least one undercut sub-surface with respect to a forward direction. The clamping bolt can be rotated from a locked position wherein the bolt shank has a threaded portion engaged in one of the protuberances and a bolt locking portion located directly forward of the at least one undercut sub-surface, to an un-locked position wherein the threaded portion remains engaged in the protuberance and no portion of the bolt shank is located directly forward of the at least one undercut sub-surface.

A method and apparatus of comparing two or more welding flux systems to determine which flux system results in the smallest incidence of undercut about a weld bead in an inner diameter of a pipe.

A joint-site structure for components to be connected by overlap friction welding. At least one step of at least one component, on which an axially set-back ring-shaped joining surface is situated, is provided with a radial undercut, in such a manner that on the face side, a region of this step that is unchanged in diameter forms a radial support ridge, which is connected with the at least one component by way of a heat throttle that is reduced in cross-section. The length of each step is designed in such a manner that when the face surface of the one component makes contact with the ring-shaped joining surface of the other component, the other face surfaces of these components, which surfaces lie opposite one another in the same radial position, are still exposed until completion of the friction-welding process.

Profile connector for connecting a first and a second profile bar (3, 4), made from a light metal alloy, with a body (5) which can be accommodated in an undercut elongated groove (34) in the second profile bar (4) and has at least one bracing leg (7) for bracing against an undercut (9, 10) of the undercut elongated groove (34) of the second profile bar (4), and an anchor bolt (13) which is accommodated in a through opening (12) that is created in the body (5) and extends at right angles to a longitudinal extension of the body (5), which anchor bolt has an anchor bolt head and fixes the profile connector (1) frontally, on the first profile bar (3), and with a first clamping screw (22) accommodated in an internal threaded opening (20) provided inside the body (5) and extending at an angle to a longitudinal centre line (LA) of the through opening (12), which clamping screw serves to displace the body (5) along the anchor bolt (13) away from the anchor bolt head (19) towards the first profile bar (3) by tightening the first clamping screw (22) in the internal thread of the first internal threaded opening (20), thereby bracing the first clamping screw (22) on the anchor bolt (13), wherein a forming geometry (29) is conformed and arranged on the body (5) for shaping frontally into the first profile bar (3) by tightening the first clamping screw (22) to create a positive locking connection between the body (5) and the first profile bar (3).

A diesel engine piston and a method of making the piston. The method involves casting the piston with complex geometries, including undercut features. The casting uses an aggregate disposable mold that can be removed from the as-cast part. In one form, the complex geometry includes an undercut combustion bowl formed in the piston dome, while in another, it may include an internal cooling passage. The undercut bowl and internal passages may be produced using the aggregate disposable mold.

The invention discloses a railway conical rolling bearing inner sleeve raceway grinding undercut machining tool and a manufacturing method, and belongs to the technical field of railway conical rolling bearing inner sleeve raceway grinding undercut machining tool clamping. The device comprises a tool rest and a tool, the tool is arranged in the tool rest, tool pressing bolts are arranged on the left side and the right side of the top of the tool rest, the bottom ends of the tool pressing bolts sequentially penetrate through the tool rest and the tool and extend into the tool, and an adjusting bolt is arranged on the front face of the tool. The rear end of the adjusting bolt penetrates through the tool and makes contact with the surface of the tool rest. The problems that when an existing numerical control machine tool machines a bearing inner sleeve raceway flange grinding undercut, interference is caused by normal clamping of a machining tool of a conventional model, the requirements for the size and angle of the grinding undercut cannot be met, various special tools are needed due to the fact that products are various in variety and not unique in size, the production cost is greatly increased, multiple times of edge grinding clamping and tool setting are needed, and the machining efficiency is high are solved. The working efficiency is greatly influenced, batch product processing cannot be met, and the product quality cannot be fully guaranteed.

The invention of a device has four threaded bolts that engage cooperatively threaded apertures in a base. These thread bolts hold the device in a temporary yet stationary position. The device has non-magnetic metal which allows test indicators to display accurate results free from any magnetic fields. The device has a precision bore of a nominal size. The radial value of the nominal size precision bore provides for mathematical calculation of the spindle centerline to work piece distance for measuring. The device has undercuts on both of its sides to aid in removing by hand. These undercuts allow the device to pivot from its stationary position for removal without damaging the planar surface. Alternatively, the device has four magnetic inserts, pocketed upwardly from the bottom surface.