Patents Assigned to Hatebur Umformmaschinen AG
  • Patent number: 11040405
    Abstract: A method is disclosed for shearing an end section from a rod material by means of a cutting blade that is movable against a stationary blade, transversely with respect to the longitudinal direction of the rod material, during the shearing operation. The end section to be sheared is brought into contact on its end-face side with a longitudinal stop and is acted on, via the longitudinal stop, with a pressure force in the longitudinal direction of the rod material. The action of pressure force on the end section takes place during the shearing operation with a position-controlled longitudinal position of the longitudinal stop. It is thus possible to manage with a lower pressure force than with conventional force-controlled pressure force action, without the shearing quality of the separation faces at the end section being impaired.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: June 22, 2021
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Mihai Vulcan
  • Patent number: 10870144
    Abstract: A ring rolling device for enlarging a ring blank includes a press element, a rotatably mounted mandrel and an advancing arrangement in which the mandrel is rotatably mounted with a first end part in a first rolling bearing and with a second end part in a second rolling bearing. The ring blank can be mounted around the mandrel. By means of the advancing arrangement, the mandrel is movable towards the press element and away from the latter again, wherein a roll gap which decreases in size, and in which the ring blank is rolled, is formed between the mandrel and the press element. The two rolling bearings are arranged axially fixed in the advancing arrangement, and the mandrel is mounted so as to be axially movable relative to these two rolling bearings.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: December 22, 2020
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Andreas Maritz, Andreas Matt, Thomas Christoffel
  • Patent number: 10786845
    Abstract: An actuator device includes two drive units for an actuator output element. The first drive unit has a first piston chamber and a first piston displaceable therein and also first hydraulic means for displacing the piston. The second drive unit has a second piston chamber and a second piston displaceable therein and also second hydraulic or pneumatic means for displacing the piston. The second piston is joined to the actuator output element for conjoint movement therewith and can be coupled to the first piston for thrust, so that the second piston is displaceable in an outward direction by the first piston. The first drive unit is configured for a larger thrust force than the second drive unit, while the second drive unit is designed for a greater stroke speed than the first drive unit.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: September 29, 2020
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Mihai Vulcan, Bernhard Zervas
  • Patent number: 10737313
    Abstract: A transport apparatus for transferring workpieces in a processing device includes at least two stations having at least two gripping tool units arranged on a gripping tool support which is movable back and forth between the stations of the processing device. The gripping tool support is movably mounted so as to be linearly guided and mounted by a parallelogram guide arrangement so as to be displaceable transversely with respect to its linearly guided movability. The gripping tool support is movable by a gripping tool support drive with two crank gear arrangements each having a gripping tool support drive motor.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: August 11, 2020
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Markus Moser, Simon Reimer, Andreas Maritz, Andreas Matt
  • Patent number: 10537932
    Abstract: In a transport method for transferring workpieces between a plurality of successive stations of a processing device, especially a forming device, workpieces are in each case transported from one station to the respective next station of the processing device simultaneously by means of a plurality of gripping tools which are movable jointly in a transport cycle. In the event of a process disturbance, the transport cycle is suspended and the gripping tools with the workpieces are moved into a waiting position in which the workpieces are outside the operating range of processing tools of the stations of the processing device. Once the process disturbance has been eliminated, the transport cycle of the workpieces is resumed. By virtue of the movement of the gripping tools into a safe waiting position outside the operating range of the processing tools of the stations, consequent damage resulting from the process disturbance can be prevented.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: January 21, 2020
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Markus Moser, Stephan Leibundgut, Andreas Maritz, Andreas Matt
  • Publication number: 20190291190
    Abstract: A method is disclosed for shearing an end section from a rod material by means of a cutting blade that is movable against a stationary blade, transversely with respect to the longitudinal direction of the rod material, during the shearing operation. The end section to be sheared is brought into contact on its end-face side with a longitudinal stop and is acted on, via the longitudinal stop, with a pressure force in the longitudinal direction of the rod material. The action of pressure force on the end section takes place during the shearing operation with a position-controlled longitudinal position of the longitudinal stop. It is thus possible to manage with a lower pressure force than with conventional force-controlled pressure force action, without the shearing quality of the separation faces at the end section being impaired.
    Type: Application
    Filed: July 18, 2017
    Publication date: September 26, 2019
    Applicant: Hatebur Umformmaschinen AG
    Inventor: Mihai VULCAN
  • Patent number: 10413963
    Abstract: A ring rolling device includes a drive roller and a rotatable revolving drum, in which five mandrels are rotatably mounted. Ring blanks can be mounted around the mandrels. By rotating the revolver drum, the mandrels move towards and away from the drive roller. The revolver drum is arranged in relation to the drive roller such that by rotating the revolver drum a decreasing roll gap is formed between a mandrel approaching the drive roller and the drive roller, in which roll gap a ring blank mounted around the mandrel is rolled during the rotating of the revolver drum. The revolver drum has four rotatably mounted support rollers, said support rollers supporting the mandrel in the direction of the rotational axis of the revolving drum, such that, during the rolling process, the mandrel is located between the support rollers and the press element.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: September 17, 2019
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Andreas Maritz, Wolfgang Müller, Pascal Stemmelin, Thomas Christoffel
  • Patent number: 9545660
    Abstract: In order to produce a formed part furnished with a through hole, a rod material is advanced by a defined length in the direction of its lengthwise extension into a forming die through a stationary guide and then immobilised by a clamping arrangement that engages with it circumferentially. The end portion of the rod material is then axially swaged by a swaging tool and is thus shaped into a disc, the circumference of which is defined by the forming die. The disc is then penetrated axially by a dishing tool and impact extruded at the same time, the displaced material flowing between the dishing tool and the inner circumferential wall of the forming die. The formed part located in the forming die is then rotated coaxially relative to the rest of the rod material and thereby separated from the rest of the rod material by torsion shearing.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: January 17, 2017
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Christian Burgin, Thomas Christoffel, Andreas Matt, Patrick Stemmelin, Mihai Vulcan
  • Patent number: 9120142
    Abstract: To produce a molded part with a through-hole, a rod-shaped blank is pushed through a guide into a cavity and fixed in place. The end region of the blank is compressed and reshaped into a disk. A disk core having the same cross-sectional shape as the blank is ejected out of the disk using a punch and pushed into the guide and moved back together with the unshaped part of the blank. The disk is severed from the disk core and the molded part is removed from the cavity. During the penetration step, the disk present in the cavity is subjected to an axial pressure in the disk core ejection direction and the blank is subjected to an axial counter-force opposite to the disk core ejection direction.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: September 1, 2015
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Andreas Matt, Mihai Vulcan
  • Publication number: 20120266643
    Abstract: In order to produce a formed part furnished with a through hole, a rod material is advanced by a defined length in the direction of its lengthwise extension into a forming die through a stationary guide and then immobilised by a clamping arrangement that engages with it circumferentially. The end portion of the rod material is then axially swaged by a swaging tool and is thus shaped into a disc, the circumference of which is defined by the forming die. The disc is then penetrated axially by a dishing tool and impact extruded at the same time, the displaced material flowing between the dishing tool and the inner circumferential wall of the forming die. The formed part located in the forming die is then rotated coaxially relative to the rest of the rod material and thereby separated from the rest of the rod material by torsion shearing.
    Type: Application
    Filed: November 26, 2010
    Publication date: October 25, 2012
    Applicant: HATEBUR UMFORMMASCHINEN AG
    Inventors: Christian Burgin, Thomas Christoffel, Andreas Matt, Patrick Stemmelin, Mihai Vulcan
  • Publication number: 20120131977
    Abstract: A forming machine comprises a shearing device for shearing off a section of a bar stock, a forming station for forming the sheared off bar stock section and a transport device for the bar stock. The shearing device has two shearing blades, of which one is movable transverse to the longitudinal extension of the bar stock. The shearing blades each have an assembly block and a shearing insert attached to this. For one of the shearing blades, the shearing insert is made of a heat-resistant, break-proof and thermal shock-resistant hard material and essentially has the form of a cylindrical half-shell. This shearing insert is arranged in a reception recess of the assembly block, which is adapted in shape, and is releasably clamped to the assembly block by means of screwed clamping blocks.
    Type: Application
    Filed: June 11, 2010
    Publication date: May 31, 2012
    Applicant: HATEBUR UMFORMMASCHINEN AG
    Inventors: Andreas Matt, Raymond Schoenenberger, Patrick Stemmelin, Heinz Stutzmann
  • Publication number: 20110193257
    Abstract: To produce a molded part with a through-hole, a rod-shaped blank is pushed through a guide into a cavity and fixed in place. The end region of the blank is compressed and reshaped into a disk. A disk core having the same cross-sectional shape as the blank is ejected out of the disk using a punch and pushed into the guide and moved back together with the unshaped part of the blank. The disk is severed from the disk core and the molded part is removed from the cavity. During the penetration step, the disk present in the cavity is subjected to an axial pressure in the disk core ejection direction and the blank is subjected to an axial counter-force opposite to the disk core ejection direction.
    Type: Application
    Filed: October 2, 2009
    Publication date: August 11, 2011
    Applicant: HATEBUR UMFORMMASCHINEN AG
    Inventors: Andreas Matt, Mihai Vulcan
  • Publication number: 20100253107
    Abstract: A workpiece transport device for a forming machine includes at least one gripping tongs, which has two non-crossing gripper arms that are pivotable with respect to one another, where the arms each have a gripping end for gripping a workpiece. Each of the two gripper arms are articulated at ends opposite from the gripping end on a common guide head and, in a middle region between the two ends, and on its own link bar. The two link bars are each rotatable about a fixed pivot, wherein the fixed pivot of the link bar of one gripper arm is arranged closer to the other gripper arm than is the fixed pivot of the link bar of the other gripper arm.
    Type: Application
    Filed: January 19, 2007
    Publication date: October 7, 2010
    Applicant: Hatebur Umformmaschinen AG
    Inventor: Daniel Ruchti
  • Patent number: 7574887
    Abstract: A forming machine has a shearing device for shearing a bar. This shearing device comprises a fixed blade, with a passage for feeding through the bar to be sheared, and a shearing part which can be moved forward and backward parallel to the fixed blade. The shearing part comprises a first shearing blade, with which a bar section projecting from the fixed blade can be sheared in a forward movement of the shearing part, and a second shearing blade, with which a bar section projecting from the fixed blade can be sheared in a backward movement of the shearing part. In addition, the forming machine has a disposal point, to which the second shearing blade transports, as scrap pieces, all the bar sections sheared by it. Due to scrap pieces being sheared solely by means of the second shearing blade, empty places in the forming stations and the associated disadvantages can be avoided.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: August 18, 2009
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Michael Suter, Pascal Stemmelin
  • Publication number: 20070261524
    Abstract: A forming machine has a shearing device for shearing a bar. This shearing device comprises a fixed blade, with a passage for feeding through the bar to be sheared, and a shearing part which can be moved forward and backward parallel to the fixed blade. The shearing part comprises a first shearing blade, with which a bar section projecting from the fixed blade can be sheared in a forward movement of the shearing part, and a second shearing blade, with which a bar section projecting from the fixed blade can be sheared in a backward movement of the shearing part. In addition, the forming machine has a disposal point, to which the second shearing blade transports, as scrap pieces, all the bar sections sheared by it. Due to scrap pieces being sheared solely by means of the second shearing blade, empty places in the forming stations and the associated disadvantages can be avoided.
    Type: Application
    Filed: July 24, 2007
    Publication date: November 15, 2007
    Applicant: Hatebur Umformmaschinen AG
    Inventors: Michael Suter, Pascal Stemmelin
  • Patent number: 7059165
    Abstract: The invention relates to a hydromechanical clamping device having two movable die halves and two punches, a first hydraulic piston, and a second hydraulic piston. The second die half is fixed to the frame and the second punch is arranged on the second hydraulic piston. The first hydraulic cylinder is connected to a third hydraulic cylinder. The latter acts on a fourth hydraulic piston. The first hydraulic cylinder is connected to the third hydraulic cylinder, so that the pressure medium displaced from the first hydraulic cylinder during a feed movement flows into the third hydraulic cylinder and the third hydraulic piston moves the fourth hydraulic piston in the feed direction, so that pressure medium is displaced into the second hydraulic cylinder, and the requisite forming pressure can be applied to the second hydraulic piston and the punches move toward one another.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: June 13, 2006
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Klaus Siegert, Aribert Schwager, Manfred Kammerer
  • Patent number: 6826946
    Abstract: A forming machine according to the invention comprises at least one forming station having a punch and a die as tools and a device for setting the axial position of one of the two tools. The setting device has, as adjusting wedge, a rotary wedge disk which is rotatable about a rotation axis and bears with a bearing surface against a parent body. The rotary wedge disk is provided with an inclined plane on the other disk side. The setting device also comprises a pressure piece which is composed of a pressure part and a rotary part having an end face. The end face bears against the inclined plane in such a way that it is displaced relative to the rotary wedge disk eccentrically to the rotation axis when the rotary wedge disk is rotated, the axial distance between pressure piece and parent body changing in the process. Since the adjusting wedge is a rotary wedge disk, the bearing surface rotates on the parent body and is not displaced longitudinally during an adjustment.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: December 7, 2004
    Assignee: Hatebur Umformmaschinen AG
    Inventors: François Muller, Ulrich Steinhauser
  • Patent number: 6748785
    Abstract: A machine with a cutting device includes a stationary bar-cutter blade and a slicing blade which cooperates with and is displaceable in relation to the bar-cutter blade. The slicing blade is a closed circular blade. The bar-cutter blade is a half blade and cooperates with a centering and clamping piece, which is displaceable in relation to the bar-cutter blade, to form together a slotted round blade. The centering and clamping piece can be controllably displaced between a centering position, in which, during operation, the bar to be cut is centered without clamping of the bar; a released position, in which the centering and clamping piece is completely removed from the bar, and a clamping position, in which the centering and clamping piece clamps the bar.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: June 15, 2004
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Hermann Zanzerl
  • Patent number: 6684723
    Abstract: An apparatus for producing a lifting and lowering movement for lifting and lowering transverse transporting tongs of a forming machine includes a rotatable control shaft on which a control cam, a counter cam and a spring element cam are fitted. A pivotably mounted double lever has a control roller arm, a counter roller arm and a drive output arm. A control roller, rolling on the control cam, is rotatably arranged on the control roller arm and a counter roller, rolling on the counter cam, is rotatably arranged on the counter roller arm. The control cam and the counter cam act on the double lever in opposite directions of rotation. On the spring element cam there rolls a spring element roller arranged on a spring element lever. Arranged on the spring element lever is a spring element, which acts on the double lever in the same direction of rotation as the counter roller.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: February 3, 2004
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Stefan Stöckle
  • Patent number: 6658913
    Abstract: In a multistage forming machine, an apron is screwed to a press slide. At its upper end, the apron has six elongated clamping cams, distributed over its width, while four upwardly projecting clamping lugs are fitted at is lower end. Suspended in the apron is a combined tool block with a wedge-shaped supporting plate. Four clamping lugs, distributed over the width, are formed at the upper end of the supporting plate, while four clamping cams are formed at the lower end. The clamping lugs of the combined tool block are suspended by means of the clamping cams of the apron, while the clamping cams of the combined tool block are inserted between the clamping lugs and the main part of the apron. By means of two clamping devices, a clamping force acting in the vertical direction of the combined tool block is produced, bringing about a clamping of the combine tool block and the press slide in the horizontal direction.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: December 9, 2003
    Assignee: Hatebur Umformmaschinen AG
    Inventors: Hermann Zanzerl, Markus Moser