Hegenscheidt-mfd Gmbh Co. Kg

Hegenscheidt-mfd Corporation

Wilhelm Hegenscheidt Gesellschaft Mbh

Wilhelm Hegenscheidt Gmbh

Hegenschneidt-mfd Gmbh & Co. Kg

Alfred Heimann

Roland Heffe

Theo Nijssen

Hans-Joachim Reiche

Frank Risters

Herbert Ligacz

Manfred Boms

Helmut Wittkopp

Dieter Goedderz

Hartwig Klosterhalfen

Jandrey Maldaner

Josef Janssen

Georg Hauschild

Peter Reim

Reinhard Klomp

Daniel Knipping

Ralf Freitag

Juergen Winnertz

Ralf Hock

Hans Zimmerman

Jürgen Winnertz

A rolling tool for the roller finishing of bearing surfaces of a crankshaft is pivotable around a crankshaft axis, with a finishing roller head and with a support roller head. In order to prevent damage to the guide mechanisms, the roller finishing roller is guided on all sides in a roller cage and the finishing roller head has a frame wherein it is mounted pivotably around a first pivot axis which is perpendicular to the crankshaft axis and parallel to a tangent on a working side of the roller finishing roller. Additionally or alternatively, the support roller head comprises a support roller frame in which the support roller housing is mounted pivotably around a second pivot axis perpendicular to the crankshaft axis and parallel to the first pivot axis, and around a third pivot axis perpendicular to the crankshaft axis and perpendicular to the first pivot axis.

Rolling tool

This invention concerns a burnishing head for smooth rolling of the ring-shaped flat end faces () at the thrust bearing of crankshafts by means of two cylindrical burnishing rollers () which are arranged to be rotated and are side by side in parallel to each other within a burnishing head housing () that is pivotable about its longitudinal axis () to reach its the working position. Each burnishing roller () is pivoted in a cage () which is provided in the burnishing head housing () with low play () and lateral relocatability.

Burnishing head

The invention relates to a hydraulic wheel set press for the simultaneous pressing of two wheel () or brake disks on a wheel axis () having a frame construction () mounted on a base (), said frame construction being comprised of two identical vertical press stands () connected to one another in a fixed manner at a mutual distance via horizontal traverses (). The press stands () each have a housing () serving to accommodate a centering cylinder () engaging the wheel axis () on one end (). In addition, a press cylinder () is provided concentrically to the centering cylinder (). said press cylinder engaging the wheel () or brake disk to be pressed, as well as control devices () for loading each of the two cylinders () with a pressure medium. Measurement devices () are provided on the base () that detect the lift of each of the cylinders () and are connected to a control device () provided for regulating the loading of the cylinders () with pressure medium as a function of the lift thereof.

Hydraulic wheel set press

The invention relates to a machine, in particular a machine tool () for deep rolling wheelset shafts () for rail vehicle wheelsets with a headstock () and a tailstock () which each have prick punch points () for holding a wheelset shaft () at its respective ends, a device (and) for driving the wheelset shaft (), as well as tools which can be moved in directions (z, x) on the machine tool () for deep rolling lengthwise sections (axle zonesto) of the wheelset shaft (), and clamping and feed devices. The tools consist of several pairs of work rollers (), of which each pair is intended for deep rolling at least one axle zone () of the wheelset shaft ().

Machine for deep-rolling axles

A deep rolling machine has a power unit () attached in a gate () such that the power unit () can be moved in the direction of force exertion (). The power unit () is connected, with articulation, at one end (), via a joint (), to the end () of a shearing arm () of the deep rolling unit (). The free end () of the gate () is fit with a back up roller () that is routed along a curved web (), defined in a gap in the second end () of the shearing arm (). In the closed position of the power unit (), three joints () form a triangle (). One of the joints () points to the rotating joint (). The two shearing arms (and) of the deep rolling unit () are articulately connected to one another at the rotating joint (). Also in the closed position, a crank lever () reaches a limit stop () at the end () of the shearing arm ().

Roller burnishing machine for crankshafts

The invention relates to a process for finish-machining of bearing positions on main bearing journals and connecting rod bearing journals of crankshafts for motor car engines, whereby the crankshafts have roundings between the bearing positions and transitions adjacent in each case to the bearing positions. The roundings are deep rolled with a deep rolling tool and then, while maintaining a distance interval to an individual transition in each case the bearing position concerned is machined with removal of material with a small cutting depth.

Process for finish-machining crank shafts for motor car engines

The invention relates to a method for deep rolling the passes or radii on the transitions between journal and cheeks or flanges of crankshafts by means of a deep rolling device () of a deep rolling machine, said deep rolling device having a lazy tongs-type design. The deep rolling device () has two tongs arms () that are articulated to each other via a pivot joint (). The corresponding outer ends () of the tongs arms () are provided with a deep rolling tool () or a force generator () for generating the deep rolling force. A measuring tape () and a sensor () which are provided on the pivot joint () are used to measure the impression depth of the deep rolling rollers () under the effect of the deep rolling force. A measuring device () mounted on the exterior () of a tongs arm () is used to measure the degree by which the tongs arm () bends under the effect of the deep rolling force.

Procedure for deep rolling crankshafts

A measuring device on at least one rail of a railway track for measuring the roundness of an individual railway vehicle wheel during running thereof on the rail as a difference of the circumferential radius of the wheel flange top and the radius of the running tread of the railway vehicle wheel in a measuring plane can include a plurality of measuring sensors. The plurality of measuring sensors can have a lateral distance from one another and are connected to the rail in the measuring plane along the axis of rotation of the railway vehicle wheel or the set of wheels and perpendicularly to the contact surface of the respective railway vehicle wheel.

Device for measuring the roundness of a railroad wheel

The present invention relates to a method for reprofiling wheel disks () or brake disks of a railway wheel or wheelset (), rotatably mounted in bearing housings (), by machining using a machine tool (), which is designed to be portable, a wheel disk () of the railway wheel or the wheelset () being pressed against backup rolls () on its circumference by a clamping element (), which engages on at least one bearing housing (), at least one of the backup rolls setting the railway wheel or the wheelset () into rotation, while simultaneously a tool () machines one of the wheel () or brake disks. The invention also relates to a machine tool () for carrying out the method. This machine tool () has a portable support frame () having a clamping element () for engaging on a closed inner and/or outer bearing housing () of the railway wheel or wheelset (), and at least one backup roll (), which may be pressed against the outer circumference of the wheel disk (), on whose bearing housing(s) () the clamping element () engages, at a mutual distance to one another opposite to the clamping element (), a drive for at least one of the backup rolls (), and a tool () for machining wheel () or brake disks () of the railway wheel or wheelset ().

Method and device for reprofiling railway wheels

The present invention relates to the deep rolling apparatus () of a deep rolling machinefor crankshafts () in which two arms () across from each other support a deep rolling head () or a support roller head (). The support roller head () has two support rollers () with parallel axes and the deep rolling head () has two work rollers () entering the radii or fillets of the main bearing or crank pin journals or journals of the crankshafts (). In one embodiment of the deep rolling apparatus () in scissor-like construction an axial guide roller () is provided on the deep rolling head () and is centered relative to the deep rolling head (), its axis of rotation being perpendicular to the axis of rotation of the crankshaft (). The axial guide roller () has a diameter that is slightly smaller than the distance between two oil collars () of a main crank pin journal () of the crankshaft.

Deep-rolling apparatus of a deep rolling machine crankshafts

The invention pertains to a method for deep-rolling radii or fillets () at the transition between the bearing journals () and the adjacent flange () of a bearing point of a crankshaft () with the aid of deep-rolling cylinders. The deep-rolling cylinders are pressed into the radius or the fillet () of the transition with a deep-rolling force until a predetermined roll-down depth () is reached while the crankshaft () is turned. The transition is initially deep-rolled with a first deep-rolling cylinder, the radius () of which has an osculating ratio between 1 and 0.85 referred to the radius of the transition or the fillet (), namely with a first deep-rolling force that produces a maximum internal compressive stress () in the transition at a depth between 1 and 2 mm below the deep-rolled surface (). The same transition is subsequently rerolled with a second deep-rolling cylinder that has a smaller radius () than the first deep-rolling cylinder (), the magnitude of which is chosen such that the second deep-rolling cylinder causes a further plastic deformation () on the deep-rolled surface () of the transition in addition to the plastic deformation achieved with the first deep-rolling cylinder.

Method for deep-rolling transitions between the bearing journals and the flanges of crankshafts

An apparatus ( ) for the deep rolling of recesses ( ) and radii of crankshafts ( ). The deep rolling is accomplished with the aid of deep-rolling rollers ( ) which, during revolution of the crankshaft ( ), penetrate into the recesses ( ) or radii of the crankshaft ( ) under application of a deep-rolling force and at an angle of approximately 35&deg; and bring about a deformation in the crankshaft ( ) itself. According to the invention, the depth of penetration of the deep-rolling rollers ( ) in the crankshaft ( ) is measured in the radial direction and the magnitude of the deep-rolling force is regulated as a function of the measured penetration depth in such a fashion that in the course of at least one revolution of the crankshaft ( ) a plastic deformation corresponding to a predefined rolling depth is obtained at least at one of the two recesses ( ) or radii of a relevant journal bearing ( ) after the deep rolling.

Apparatus for deep rolling of recesses and radii of crankshaft journal bearings

The invention relates to a device for fixed-rolling radii or recesses on main ( ) or connecting rod bearings ( ) of crankshafts ( ) by means of fixed rollers and supporting rollers on the respective main ( ) or connecting rod bearings ( ) to support the rolling force exerted on the crankshaft ( ) by the fixed rollers. A device is provided for applying an additional external load ( ) in the direction of the load on the crankshaft ( ) that arises during operation while fixed-rolling the radii or recesses.

Device for the fixed-rolling of crankshafts

A roller cage ( ) is provided for a minimum of one work roller ( ) of a tool for deep rolling of grooves or radii of a crankshaft bearing ( ) where the work roller ( ) at a section of its circumference is loosely guided by the roller cage ( ) or inside a concave void of the roller cage ( ). Portions of the roller cage ( ) by which the work roller ( ) is guided, consist of a material that dispenses solid lubricant to the work roller ( ).

Roller cage for a deep rolling work roller

A machine for hard-rolling a workpiece such as a crankshaft includes a drive apparatus (7) for rotating the crankshaft (8, 113), suspension apparatuses (9 to 17), hard-rolling devices (18 to 26, 111) movably supported by the suspension apparatuses, and a crankshaft transport apparatus (100). Each hard rolling device is a scissors jaw including two scissors arms (46, 47, 114, 115), with respective hardening roller heads (66 to 69, 118) and respective opposite counter-support heads (74, 119) mounted on the upper ends of the scissors arms facing the crankshaft. Each suspension apparatus (9 to 17) is slidably adjustable along the rotation axis (27) of the drive apparatus (7). A drive arrangement (49, 122) is connected to the lower ends of the scissors arms directed away from the crankshaft, for closing and opening the scissors arms to a maximum opening width (59, 130) that is larger than twice the maximum structural radius (60, 131) of the crankshaft. A respective angled bellcrank lever (78) is pivotally supported on each suspension apparatus, with one shank thereof pivotally connected to one scissors arm and the other shank thereof connected to a piston cylinder unit (84), which in turn is connected to the suspension apparatus (9 to 17). Guide members (88, 89) are provided for guiding the upper ends of the scissors arms.

Growing community of inventors

Aachen, Germany

Alfred Heimann