Mapal Fabrik Fur Prazisionswerkzeuge Dr. Kress Kg

Mapal Fabrik Fur Prazisionswerkzeuge

Friedrich Häberle

Dieter Kress

A tool for machining borehole surfaces, includes The at least one cutting die being tangentially fastened to the end face of the tool, and preferably embedded therein, The at least one cutting die is provided with a rounded cut for producing a support surface adjacent to the tool edge is produced, the support surface being arched with a radius that is smaller than the radius of the borehole to be machined, and the region of the support surface directly adjoining the tool edge resting against the borehole wall to be machined, and the end region of the support surface, as viewed in the peripheral direction of the tool, which is situated at a distance from the tool edge being situated at a distance from the wall of the borehole.

Tool for machining boreholes

A tool system having at least two tool parts with opposed end contact surfaces which bear against one another in the region of an interface. The contact surfaces have a tooth system thereon including intermeshing teeth and recesses. The tooth system is shaped and positioned such that the contact surfaces can be fitted together only in at least one defined rotary angle position with respect to the center axis of the tool parts.

Tool system

A broaching tool for the machining of bore surfaces, namely for introducing at least one groove, is proposed, the tool having a cutter head () with at least one cutter () and with a body () bearing the cutter head (). The tool is characterized in that the cutter head () is rotatably movable and positioned eccentrically in the body (), and that the middle axis () of the cutter head () forms an acute angle &#x3b1; with the middle axis () of the body ().

Broaching tool and method for machining the surfaces of bores

A tool for the cutting machining of precision bores in workpieces, with

Tool for machining precision bores

A tool is proposed for metal-cutting machining of bore surfaces with at least one cutter insert () which is let into the end face () of the tool () and at least one cutter insert () which is let into the circumferential face () of the tool (), said cutter inserts () having at least two geometrically defined cutting edges. Said tool is characterized by the fact that one of the cutting edges of the cutter inserts is embodied as a roughing cutting edge () and the other cutting edge of the cutter inserts is embodied as a finishing cutting edge ('), and in that the cutting edges are arranged on the two ends of a side edge (&#x2032;) of the cutter inserts.

Knife plate and tool for machining bore surfaces

A tool for metal-cutting machining of a surface of an opening particularly of a valve seat in a cylinder head of an internal combustion engines. The tool has a cutter tip with at least one geometrically defined cutting edge. The cutter tip rests on two supporting regions in the tool which are arranged at an angle &#x3b1;, and an angle-bisecting line runs essentially perpendicularly with respect to the active cutting edge which then is removing chips from the valve seat. A claw holds the cutting tip to the tool end. Coolant and lubricant are supplied through an outlet from the claw.

Tool for the metal cutting machining of valve seats

An interface of a tool is proposed with a first part serving as a seat having a female taper, which part has a first conduit section located concentrically to its center axis, a second part having a hollow shaft taper introduceable into the recess, which part has a second conduit section located concentrically to its center axis, where the center axes of the first and second parts align and having a collet chuck having two chuck jaws which comprises an actuating device coacting with the chuck jaws which can be activated by means of an actuating element. The characteristic feature of the interface is that the actuating device () has a caging element () which can be shifted to two operating positions and which has a central passage () which is located such that the center axes of the first and second parts () pass through said passage.

Interface of a tool

A tool for fine machining of work pieces involving metal removal is proposed having at least one cutter () for preliminary machining with a geometrically defined cutting edge () and having at least one cutter () for final machining with a geometrically defined cutting edge (). The characteristic of the tool is that the cutter () for preliminary machining is part of a preliminary machining stage () and the cutter () for final machining is part of a final machining stage () and that an interface () located between the preliminary machining stage () and the final machining stage () is provided with a first flat surface () and a second flat surface () which are located on the preliminary machining stage () and the final machining stage () and which has a device () ensuring the coaxiality of the preliminary machining stage () and the final machining stage () to each other.

Tool and method for fine machining work pieces

The invention relates to an interface between two parts of a tool system, in particular to a metal cutting tool (). Said interface comprises a holder () provided with a cavity (), an interchangeable head () which is arranged on the axial extension of the holder and provided with a projection () introducible into the cavity () and a clamping device () for fixing the interchangeable head () to the holder (). The inventive interface is characterised in that the clamping device () is provided with a holding bolt () and an eccentric element () which axially displaces said bolt and is actuated through a peripheral surface () of the metal cutting tool ().

Interface between two parts of a tool system

It is proposed to provide a tool for the final machining of a valve seat and valve guide in a cylinder block of a combustion engine of a motor vehicle, said tool having a first section with at least one first blade for machining the valve seat and a second section with at least one second blade for machining the valve guide. The tool is characterized in that a separation site () is provided between the first section () and the second section (), said separation site comprising a cone () and a conical recess () capable of receiving said cone.

Tool and method for the finishing of valve seats and guides

A tool for machining workpieces, having a parent body which can be expanded at least zonally, having at least one geometrically defined cutting edge projecting beyond a circumferential surface of the tool, and having a setting device influencing the radial distance of the cutting edge from the center axis of the tool. The setting device has a setting element, and an adjusting device which sets the degree of bending of the setting element. The setting element is inserted into the parent body of the tool in such a way that, when the bending of the setting element is varied, the radial distance of the cutting edge is varied.

Tool for machining workpieces

A tool for the precision machining of surfaces in workpieces comprising at least two cutter inserts in the periphery of the tool body and each having at least one defined cutting edge. The cutter inserts are of different materials at least in the region of the at least one cutting edge. Guide strips on the tool body periphery between the cutter inserts guide the tool body.

Tool for the precision machining of surfaces

A junction is proposed between two tool parts, where a first tool part has a recess in hollow cone shape, and a second tool part has a cone-shaped projection that can be inserted into the recess. The junction is characterized by the fact that the recess () and the projection () have practically the identical angel of taper, that the projection () is structured to be practically non-resilient, and the wall () that surrounds the recess () of the first tool part (holder ()), is structured to be resilient, and that the two tool parts () are provided with flat surfaces () that rest against one another when the two tool parts () are connected. It is essential that the two tool parts are secured together in the assembled state of the junction (), in an axial direction by means of a clamping device in such a way that the wall () of the first tool part () is expanded.

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Lauchheim, Germany

Friedrich Häberle