WO2024008354A1 - Umformmaschine zum drücken und drückwalzen - Google Patents
Umformmaschine zum drücken und drückwalzen Download PDFInfo
- Publication number
- WO2024008354A1 WO2024008354A1 PCT/EP2023/063066 EP2023063066W WO2024008354A1 WO 2024008354 A1 WO2024008354 A1 WO 2024008354A1 EP 2023063066 W EP2023063066 W EP 2023063066W WO 2024008354 A1 WO2024008354 A1 WO 2024008354A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- forming
- machine
- machine according
- forming machine
- roller
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
Definitions
- the invention relates to a forming machine for pressing and spinning rolls with a vertically directed main spindle on which a forming tool is arranged, a first drive with which the main spindle can be driven to rotate about a vertically directed axis of rotation, a tailstock spindle which is arranged coaxially with the main spindle and relative thereto is movable, a machine lower bed and an upper machine bed, which are connected to one another via at least three vertically directed machine stands, the main spindle being arranged on the machine lower bed and the at least three machine stands being arranged distributed around the axis of rotation, which delimit a working space, and at least one forming roller, which is guided along at least one machine stand in an axially movable and radially adjustable manner, according to the preamble of claim 1.
- DE 9103358 U1 shows a forming machine with two vertically directed machine stands. There are drives for separately driving the main spindle and the tailstock spindle on both the lower machine bed and the upper machine bed. When using two machine stands, the rigidity of the machine frame is limited.
- Increased rigidity of the machine frame is achieved by arranging three machine stands, as is known, for example, from the generic DE102007012765 B4.
- the tailstock spindle is guided in a linearly displaceable manner along the three machine stands.
- a high level of machine rigidity is important to ensure precise guidance and positioning of the forming rolls and thus achieve high forming accuracy.
- the invention is based on the object of specifying a forming machine in which a particularly high level of machine rigidity is provided.
- the forming machine according to the invention is characterized in that the tailstock spindle is arranged on a slide which is axially guided and mounted on the at least three machine stands, each with at least one linear guide, in such a way that the slide stiffens the machine stands against bending outwards in the radial direction.
- the invention is based on the knowledge that when pressing or spinning a workpiece, significant radially directed forming forces are exerted by the forming rollers on the centrally mounted workpiece. These processing forces are to be absorbed by the machine stands, on which the individual forming rollers are slidably mounted and guided.
- the machine stands serve, so to speak, as abutments and are subjected to radially outwardly directed forces during a forming process, through which the vertical or column-like machine stands can be bent radially outwards. Even with a very rigid design of the machine stand, undesirable bending can occur with large forming forces in the range of tenths of a millimeter or millimeter, which can have a negative impact on the forming accuracy.
- a carriage for the tailstock spindle is designed and arranged in such a way that the carriage is guided along the machine stand in such a way that it stiffens the machine stand against bending outwards in the radial direction.
- the carriage thus serves as a transverse reinforcement, which is guided vertically along the machine stand.
- Radially outwardly directed forces are preferably symmetrical
- the machine stands distributed over the axis of rotation can thus be picked up by the carriage, which is particularly horizontally directed, and compensated for against each other. The resulting increased rigidity of the machine against radially directed outward forces leads to an increase in the shape accuracy during forming.
- the at least one linear guide per machine stand is designed to engage behind in a radial direction or in a form-fitting manner in the direction of the radially introduced forces.
- the carriage is designed to be correspondingly stiff so that it can absorb the radial forces from the individual stands and largely cancel them out against each other.
- a particularly advantageous embodiment of the invention is that at least one linear guide bar is formed on the machine stands, which has a radially outwardly directed guide surface, and that each guide bar is assigned at least one guide element, which is mounted on the carriage and for guiding the carriage rests on the radially outwardly directed guide surface of the associated guide bar.
- the at least one guide element on the carriage can be a guide roller, a guide ball and/or a sliding or rolling guide shoe, which rests on contact with the outwardly directed guide bar of the machine stand. This allows particularly good stiffening.
- a second drive ideally of the same size, is arranged on the slide, with which the tailstock spindle can be driven to rotate about the axis of rotation and/or can be driven synchronously with the speed and/or angle of rotation.
- Particularly high torques can be achieved using two drives Forming a workpiece is applied, which is to be driven in rotation for forming.
- a further advantageous embodiment of the invention is based on the fact that a roller support for at least one forming roll is slidably guided along at least one machine stand and that the roller support is provided with an axial feed drive and a radial feed drive for the forming roll.
- An overall compact structure is achieved, with each machine stand carrying and guiding not only the carriage, but also a roller support.
- the carriage and the at least one roller support are guided over the same strips.
- the individual roller supports can be individually controlled and adjusted using their own axial feed drive. This allows workpieces with a wide variety of shapes to be formed.
- each machine stand has two box-shaped columns, between which a free space is formed, and that at least one roller support for the forming roller is movably guided in the free space.
- the carriage can each have a fork-shaped holder, at the ends of which a guide element is arranged for guiding on a guide bar on each of the box-shaped columns.
- the fork-shaped holder can encompass the individual machine stand with the two box-shaped columns and thus bring about the desired stiffening guidance on the outside of the two box-shaped columns.
- roller support In principle, only a single roller support or part of the roller supports can be stored on a machine stand. According to a further development of the invention, it is particularly expedient for a roller support to be mounted on all machine stands.
- At least one forming roller is arranged at an angle of 5 degrees to 20 degrees to the axis of rotation. This allows a further improvement in the rolling behavior of the forming roller on the workpiece to be achieved when forming blanks due to the resulting clearance angle at the roller outlet.
- the forming roller By arranging the forming roller in At angles of 5 to 20 degrees, a significant reduction in the radial roller engagement area can be achieved, so that different peripheral speeds between the workpiece and the forming roller are reduced to a minimum. This also minimizes wear on the forming roller in the long term and improves the shape accuracy when forming on cylindrical and especially conical tool geometries.
- the forming rollers on the individual roller supports can be passively rotatable.
- the forming rollers When there is contact with the rotating workpiece, the forming rollers can be passively set in rotation.
- a forming roller drive is provided for at least one forming roller, with which the forming roller can be driven at a predetermined speed.
- a synchronization between the speed of the workpiece or the peripheral speed in the forming roller engagement diameter and the speed of the forming roller can be set and ensured via a basically known control unit.
- a further preferred embodiment of the invention is that at least one processing unit with a forming roller is arranged in a passage area between two machine stands. There is thus a relatively large amount of freedom for arranging and advancing the at least one forming roll.
- Several forming rollers with a corresponding changing device for changing the forming roller, which is in an operating position for forming, can also be provided on a roller support.
- the roller support can be provided with an angle adjustment device for the forming roller, so that the working angle and/or forming roller geometry can be optimally adjusted for the processing task. Angle adjustment can be done manually or automatically.
- a further particularly expedient embodiment of the forming machine according to the invention is achieved in that a connecting device for connecting and lifting the forming tool from the main spindle is arranged on the axially movable carriage.
- the forming tool on the main spindle is mounted in a detachable and interchangeable manner.
- the forming tool can be connected to the carriage via a connecting device on the axially movable carriage arranged above it.
- a connecting device on the axially movable carriage arranged above it To connect you can use a chain, one or more Connecting rods or one or more other connecting elements can be used.
- By moving the carriage axially upwards it can serve as a lifting device to separate the forming tool from the main spindle. This makes changing the forming tool easier. Changing the forming tool may be necessary in particular if a different workpiece contour is intended for processing.
- a further improvement in changing can be achieved according to an embodiment variant of the invention in that a tool changing device is arranged on the machine base, which is designed to feed and/or remove the forming tool to or from the main spindle.
- the tool device can in particular be designed as a transversely directed displacement device for radially displacing the released forming tool from the main spindle or a new forming tool to the main spindle.
- a further preferred embodiment of the forming machine according to the invention can be achieved in that an axially movable and radially pivotable unit with a connecting device for connecting and lifting the forming tool from the main spindle is arranged on the machine stand.
- a further increase in the forming flexibility of the machine according to the invention can be achieved by providing the tailstock spindle with a pressure extension with a pressure disk. This means that even with a limited travel path of the tailstock spindle along the machine stands, the necessary pressure contact can be achieved when machining certain workpieces.
- the forming machine according to the invention can be used particularly flexibly.
- the machine is designed for forming steel wheel wrenches and/or steel wheels.
- steel wheels can be manufactured for larger vehicles, such as trucks or buses. This requires relatively large, massive and/or high-strength starting workpieces, which are usually a sheet metal blank or a semi-finished product preformed by casting, pressing or forging.
- a further improvement in the forming accuracy can be achieved in that the tailstock spindle is designed with a measuring device as a positioning axis. In this way, a travel path of the tailstock spindle and thus of the slide along the machine stand can also be precisely determined.
- the position measurement data can be fed to a control unit for controlling and moving the tailstock spindle.
- a further advantageous embodiment of the invention is that the contact pressure of the tailstock spindle is designed to be adjustable and/or programmable.
- the tailstock spindle can be provided with a corresponding feed drive. This can have a ball screw or in particular one or more hydraulic cylinders.
- a further increase in machining flexibility is achieved in that the tailstock spindle is provided with a first axially displaceable pressure extension with a pressure ring, which preferably protrudes beyond a second pressure extension with a pressure disk.
- a particularly targeted pressing of the workpiece onto the forming tool on the main spindle can be achieved. Only the inner pressing extension can also be arranged.
- an ejector unit and/or scraper unit is arranged on the main spindle and/or the tailstock spindle.
- This can in particular include a hydraulically actuated and axially adjustable cylinder with an ejector and/or scraper element.
- the ejector and/or scraper element on the main spindle side can advantageously also be used to lift the finished workpiece from the tool to a removal level and/or lower the raw part to a clamping and processing level.
- a single forming tool can be arranged on the main spindle.
- the forming tool specifies an internal contour of the workpiece to be formed.
- Advantageous embodiment of the forming machine in that the tailstock spindle is designed to accommodate another forming tool.
- the forming rollers can only be arranged on the roller supports provided for this purpose.
- a further increase in forming flexibility is achieved in that the carriage is designed to accommodate forming rolls.
- the carriage is designed to accommodate forming rolls.
- the carriage can be moved axially along the machine stand. These can be delivered radially and/or axially to the workpiece via appropriate drives in order to reshape it.
- the machine stands are connected to one another in their central regions via cross struts. This achieves further stiffening against a deflection radially outwards.
- Fig. 1 a top view of an embodiment of a forming machine according to the invention
- Fig. 2 a cross-sectional view of the machine from Fig. 1 according to section CC;
- FIG. 3 a perspective view of the machine according to FIG. 1, with components omitted;
- Fig. 4 a schematic cross-sectional view through a spindle area of the forming machine according to the invention
- Fig. 5 a perspective view of the machine frame
- Fig. 6 a side view of the forming machine according to the invention.
- Fig. 7 a cross-sectional view of the machine from Fig. 6 according to the section
- FIGS. 1 to 4 The basic structure of a forming machine 10 according to the invention is explained using the exemplary embodiment according to FIGS. 1 to 4.
- a star-shaped machine frame 24 with three machine stands 30 can be seen.
- a first passage area 34a, a second passage area 34b and a third passage area 34c are formed, through which an inner work space 5 is reached.
- a removal device 60 with a conveyor belt as a conveyor device 64 is arranged at the first passage area 34a.
- a gripper By means of a gripper (not shown), a workpiece can be brought out of the working space 5 from the stripping device (not shown) onto the conveyor device 64.
- a feed device 70 with a gripper 72 is arranged on the second passage area 34b.
- the gripper 72 can separate and pick up a raw part from a conveyor or supply device (not shown), then feed it to the working space 5 and place it on a forming tool (not shown).
- An additional processing unit 40 can be arranged at the third passage area 34c, which will be explained in more detail below.
- the machine frame 24 has a lower machine bed 26 and a plate-shaped upper machine bed 28, which are firmly connected to one another via the three vertical machine stands 30.
- a main spindle 12 with a forming tool 14 for holding a workpiece 1 is arranged on the machine base 26.
- the main spindle 12 with the forming tool 14 is driven in rotation about an axis of rotation 18 via a first drive 16.
- An ejector unit 80 is provided below the main spindle 12.
- the ejector unit 80 is used for loading - transferring the workpiece 1 from the feed device 70 for positioning and clamping the workpiece 1 on the axis of rotation 18 with subsequent clamping on the forming tool 14 - and for unloading, breaking loose and pushing off the workpieces 1 from the forming tool 14 with subsequent transfer to the discharge device 60.
- the wall thickness is greatest in the center of the wheel.
- a second drive 22 is arranged on the machine upper bed 28, which drives a tailstock spindle 20 rotating about the axis of rotation 18 via a conventional gear device.
- the tailstock spindle 20 and the second drive 22 are mounted on a horizontally directed, plate-shaped and box-like stiffened carriage 21, which can be moved axially along the vertical machine stands 30.
- hydraulic actuating cylinders 23 are provided on the upper machine bed 28.
- the main spindle 12 and the tailstock spindle 20 coaxial therewith are arranged in the work space 5, which is delimited by the three machine stands 30.
- the tailstock spindle 20 can be provided with an axially displaceable pressure extension 25 with a pressure ring 27, which protrudes beyond a first pressure extension with a pressure disk.
- Each machine stand 30 is made up of two box-shaped columns 31, between which a free space is formed.
- roller supports 36 can be mounted so that they can be delivered with a forming roller 37, as clearly shown in FIG. 4.
- the radial roller supports 36 are aligned horizontally.
- the three radial roller supports 36 can be arranged offset from one another by 120 degrees.
- the feed drive in the radial direction is carried out by a servo-controlled hydraulic cylinder, and in the axial direction the vertical adjustment is carried out via a servo-controlled hydraulic cylinder. They can also be electric.
- the roller supports 36 can each be moved mechanically completely independently of one another with radial and axial infeed for the forming rollers 37.
- an additional processing unit 40 can be provided for carrying out a further processing operation on the workpiece.
- the structure of the machine frame 24 is clearly shown in FIG.
- the columnar machine stands 30 can be connected in their respective central region to the adjacent machine stand 30 via horizontal cross struts 32 and thus additionally stiffened.
- the arrangement of a roller support 36 between the two box-shaped columns 31 of a machine stand 30 is also clearly shown in FIG.
- section AA in FIG. 6 the guidance of the carriage 21 according to the invention along the machine stands 30 is illustrated, the sectional view being shown in FIG. 7.
- Two linear guides 90 are arranged along each machine stand 30, which run parallel to the axis of rotation 18.
- Each linear guide 90 has a rail-like guide bar 92, which is attached to a radial inside of one of the machine stands 30.
- concave recesses are provided on the sides of the guide strips 92.
- corresponding U-shaped guide elements 96 are attached, which engage with projections in the recesses of the guide strips 92, with radially directed forces being able to be absorbed by the guide elements 96 via radially outwardly directed guide surfaces 94.
- the carriage 21 can thus contribute to further stiffening the machine frame 24, which significantly improves the shape accuracy, particularly when forming large vehicle wheels.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202380046433.8A CN119365278A (zh) | 2022-07-07 | 2023-05-16 | 用于压制和压辊的改型机器 |
EP23727305.7A EP4551343A1 (de) | 2022-07-07 | 2023-05-16 | Umformmaschine zum drücken und drückwalzen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202022103820.1 | 2022-07-07 | ||
DE202022103820.1U DE202022103820U1 (de) | 2022-07-07 | 2022-07-07 | Umformmaschine zum Drücken und Drückwalzen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2024008354A1 true WO2024008354A1 (de) | 2024-01-11 |
Family
ID=83114620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2023/063066 WO2024008354A1 (de) | 2022-07-07 | 2023-05-16 | Umformmaschine zum drücken und drückwalzen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4551343A1 (de) |
CN (1) | CN119365278A (de) |
DE (1) | DE202022103820U1 (de) |
WO (1) | WO2024008354A1 (de) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9103358U1 (de) | 1991-03-19 | 1991-06-27 | de Roos Sondermaschinen GmbH, 4720 Beckum | Anordnung zum Umformen einer Ronde aus Metall durch Drücken |
CN2810802Y (zh) * | 2005-07-26 | 2006-08-30 | 嘉兴市四通车轮制造有限公司 | 立式车轮强力旋压机 |
CN201283385Y (zh) * | 2008-11-03 | 2009-08-05 | 嘉兴市四通车轮制造有限公司 | 立式数控强力旋压机 |
CN201385079Y (zh) * | 2009-04-03 | 2010-01-20 | 嘉兴市四通车轮制造有限公司 | 立式三旋轮旋压机 |
CN201960026U (zh) * | 2010-12-18 | 2011-09-07 | 胡景春 | 三梁三柱三旋轮数控强力旋压机 |
CN102581104A (zh) * | 2012-03-07 | 2012-07-18 | 黄石华力锻压机床有限公司 | 圆盘周边增厚旋压机 |
DE102007012765B4 (de) | 2007-03-16 | 2013-03-28 | Leifeld Metal Spinning Ag | Umformmaschine und Verfahren zum Drücken/Drückwalzen |
CN109201829A (zh) * | 2017-08-23 | 2019-01-15 | 中国航空制造技术研究院 | 一种封闭式大型框架结构 |
CN109454143A (zh) * | 2018-11-30 | 2019-03-12 | 四川航天长征装备制造有限公司 | 一种立式旋压机 |
-
2022
- 2022-07-07 DE DE202022103820.1U patent/DE202022103820U1/de active Active
-
2023
- 2023-05-16 EP EP23727305.7A patent/EP4551343A1/de active Pending
- 2023-05-16 WO PCT/EP2023/063066 patent/WO2024008354A1/de active Application Filing
- 2023-05-16 CN CN202380046433.8A patent/CN119365278A/zh active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9103358U1 (de) | 1991-03-19 | 1991-06-27 | de Roos Sondermaschinen GmbH, 4720 Beckum | Anordnung zum Umformen einer Ronde aus Metall durch Drücken |
CN2810802Y (zh) * | 2005-07-26 | 2006-08-30 | 嘉兴市四通车轮制造有限公司 | 立式车轮强力旋压机 |
DE102007012765B4 (de) | 2007-03-16 | 2013-03-28 | Leifeld Metal Spinning Ag | Umformmaschine und Verfahren zum Drücken/Drückwalzen |
CN201283385Y (zh) * | 2008-11-03 | 2009-08-05 | 嘉兴市四通车轮制造有限公司 | 立式数控强力旋压机 |
CN201385079Y (zh) * | 2009-04-03 | 2010-01-20 | 嘉兴市四通车轮制造有限公司 | 立式三旋轮旋压机 |
CN201960026U (zh) * | 2010-12-18 | 2011-09-07 | 胡景春 | 三梁三柱三旋轮数控强力旋压机 |
CN102581104A (zh) * | 2012-03-07 | 2012-07-18 | 黄石华力锻压机床有限公司 | 圆盘周边增厚旋压机 |
CN109201829A (zh) * | 2017-08-23 | 2019-01-15 | 中国航空制造技术研究院 | 一种封闭式大型框架结构 |
CN109454143A (zh) * | 2018-11-30 | 2019-03-12 | 四川航天长征装备制造有限公司 | 一种立式旋压机 |
Also Published As
Publication number | Publication date |
---|---|
EP4551343A1 (de) | 2025-05-14 |
CN119365278A (zh) | 2025-01-24 |
DE202022103820U1 (de) | 2022-08-15 |
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