• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    It is a forging device with out in the stroke direction, forging tools (3) receiving punches (4) and driven by a shaft (10) Hubtrieben (7) described which at an abutment (12) under a bias in contact with the Hubtrieben (7) support held stamps (4) non-positively. In order to provide simple construction conditions, it is proposed that the shafts (10) of the lifting mechanisms (7) have two angularly symmetrical drive cams (11) which are angularly offset by 180 ° and which cooperate with the abutments (12) of the punches (4) ,
    公开号:AT516340A1
    申请号:T50704/2014
    申请日:2014-10-02
    公开日:2016-04-15
    发明作者:
    申请人:Gfm Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a forging device with guided in the stroke direction, forging dies receiving punches and driven by a shaft-lifting drives, which are supported non-positively on an abutment held under a bias in An¬lage on the Hubtrieben stamps.
    In order to take advantage of eccentric drives for driving the forging dies of forging tools without having to use a connecting rod for transmitting power between the eccentric and the die receiving die, it is known (EP 0 667 197 A1) to mount on the eccentric a sliding block which is frictionally supported on a formed in the form of a sliding plate Wi¬derlager the punch so that on the sliding block large pressure forces can be transferred to the forging die. Because of the force-locking support of the sliding block on the abutment of the punch, the return of the punch during the idle stroke of the lifting drive can not be performed by the sliding block, so that the forging punch must be held by means of a Feder¬beaufschlagung in contact with the sliding block. Regardless of whether the forging punch is acted upon by a connecting rod or a sliding block, eccentric drives have the disadvantage that must be provided for a mass balance. In addition, for a forging stroke and the subsequent Leer¬hub a full revolution of the eccentric shaft necessary to be able to take without influencing the Hubgeschwindigkeit along the stroke.
    The invention is therefore based on the object, a forging device with radi¬al Schmiedestempeln form so that the benefits of Exzentertrie¬ben can be ensured without their disadvantages, in particular with regard to the required mass balance and the limitation of the stroke frequency on the speed of the eccentric shaft in purchasing to have to.
    Starting from a forging device of the type described above, the invention achieves this object by virtue of the fact that the shafts of the lifting drives have two drive cams angularly offset by 180 ° with respect to the shaft axis and interacting with the abutments of the punches.
    Due to the two diametrically opposite drive cams of the drive shaft, which are used once during one revolution of the shaft, a double stroke frequency is achieved in comparison to a conventional eccentric drive, wherein high pressure forces are transmitted to the abutment of the forging dies via the drive cams in a sliding block-like manner be able to. The centric symmetry of the two drive cams with respect to the shaft of the drive shaft eliminates the need for additional mass balancing, resulting in a forging punch lift that makes good use of the benefits of eccentric drives without the disadvantages thereof. In addition, the shape of the drive cams on the stroke speed of the forging dies along the stroke can be influenced both during the forging and the idle stroke and thus an adaptation to different Schmiedebedingun¬gen be achieved.
    Particularly simple construction conditions arise when the shaft has an oval cross section in the area of the drive cams. In this context, it has to be considered that the forging stroke only needs to be slightly larger than the maximum reduction of the workpiece radius to be made in a forging pass, so that the difference between the largest and the smallest oval diameter remains comparatively small.
    Lifting drives with two drive cams diametrically opposed to one another on the drive shaft moreover present advantageous design prerequisites for a good load transfer to the forge-stamping support frame of the
    Forging device is when the shaft of the Hubtriebe between two on the one hand in abutment of the stamp and on the other hand in this abutment gegenüber¬liegenden, besiedest support bearing arranged bearing shells is performed, because in this case the stamping forces are removed via the drive shaft directly on the stetes¬te support bearing, without to load the drive shaft to bending, as is inevitable in laterally mounted next to the drive cam drive shafts. However, the displacement of the axis of rotation caused by the direct support of the drive shaft on the support bearing must, however, be taken into account by means of a compensating coupling in the course of the drive connection. If the support bearing is mounted so as to be displaceable perpendicular to the shaft and displaceable perpendicularly to the stroke direction in the frame, then the bearing shell is advantageous in terms of the design conditions, which has an advantageous effect in particular on the wear behavior.
    In order to be able to adjust the stroke position of the punches in a simple manner, the position of the support bearing for the drive cams can be made adjustable in the stroke direction. With the adjustment of the support bearing in the stroke direction, the Hubtriebund thus shifts the stroke position of the stamp.
    In the drawing, the subject invention is shown, for example. It shows
    1 shows a forging device according to the invention fragmentary in the region of a Hubtriebs for the punch of a forging tool in a sche¬matischen longitudinal section,
    2 shows this forging device in a section along the line II-II of FIG. 1 on a larger scale,
    3 shows an illustration corresponding to FIG. 1 of a construction variant of a forging device according to the invention, FIG.
    4 shows a section along the line IV-IV of FIG. 3 on a larger scale,
    5 shows a further embodiment of a forging device according to the invention in a representation corresponding to FIG. 1 and FIG. FIG. 6 shows a section along the line VI-VI of FIG. 5 on a larger scale. FIG.
    The forging apparatus according to FIGS. 1 and 2 has a frame 1, for example with four forging tools 2 distributed around a forging axis 2, which are arranged interchangeably on punches 4. The punches 4, of which only one is shown, are mounted in the frame 1 so as to be displaceable radially relative to the forging axis 3. For this purpose, the frame 1 forms a guide bearing 6 for each punch 4 provided with a sliding sleeve 5.
    The punches 4 are connected to lifting drives 7 which comprise a shaft 10 which is connected to a drive motor 9 via a coupling 8 and which has two drive cams 11 which are angularly offset by 180 ° and centrically symmetrical with respect to the shaft axis. To form these drive cams 11, the waves 10 in the camming area are given an oval cross-section, as can be seen in particular from FIG. 2. The drive cams 11 interact with an abutment 12 of the punches 4, which is provided with a cylindrical bearing shell 13, via which the punches 4 are held pressed against the shaft 10, in a manner known per se by means of compression springs 14, which are indicated only schematically in FIG. 1 and may be of a different nature, since it is only important to reset the punches 4 with the forging tools 3 during the idle stroke in accordance with the course of the drive cams 11.
    The shaft 4 for the lifting drive 7 is rotatably mounted on both sides of the drive cam 11 in radial bearings 15, via which the related forging forces from the shaft 4 on the frame 1 must be removed. If the shaft 4 is driven by the drive motor 9, both drive cams 11 are used during a shaft rotation with the effect that not only the stroke frequency of the punches 4 is doubled compared to conventional eccentric drives, but also a substantial mass balance can be achieved if from a conventional rotationally symmetrical arrangement of forging tools. In conjunction with abutments 12, the cylindrical Gleitschalen13 have, also advantageous lubrication conditions between the Gleit¬schalen 13 and the drive cam 11 can be met, so that there are overall favorable design conditions.
    The design requirements can according to the embodiment of FIGS. 3 and 4 are additionally improved when the shaft 10 of the lifting gear 7 is not stored in radial bearings 15 laterally adjacent to the drive cam 11, but zwi¬schen two on the one hand by the abutment 12 of the punch 4 and on the other by this abutment 12 opposite, in the stroke direction on the frame. 1 Supported support bearing 16 formed cylindrical bearing shells 13,17 rotatably guided. In this case, the forces caused by the forging forces on the drive cam 11 and the support bearing 16 are abbegetragen directly on the frame 1, so that the shaft 4 of the Hubtriebe 7 is exposed to no bending loads. However, the inevitably occurring displacement of the shaft axis must be taken into account, which can be achieved in a simple manner by the provision of a balancing clutch 18 between the drive motor 9 and the shaft 10. The bearing of the shaft 4 of the lifting gear 7 between two cylindrical Lager¬schalen 13,17 on the drive cam 11 also brings the additional advantage that for a given stroke of the radial projection of An¬triebsnocken 11 relative to the circular shaft cross-section only hal¬ Ben Hub must match, so that only comparatively small deviations from the circular cross-section result by the drive cam 11, which has an advantageous effect on the storage conditions of the shaft 10 between the two bearing shells 13,17. Nevertheless, it is recommended that the support bearing 16 with respect to the setting Ge 1 perpendicular to the shaft 10 and perpendicular to the stroke direction slidably stored in Ge¬stell 1 to avoid otherwise occurring additional loads. In FIGS. 3 and 4, this displaceable mounting of the support bearings is indicated by guides 19 for the support bearings 16.
    The embodiment according to FIGS. 5 and 6 essentially corresponds to that according to FIGS. 3 and 4. In contrast to FIGS. 3 and 4, however, the lifting position is additionally adjustable. For this purpose, the frame 1 associated Stützla¬ger 16 in the stroke direction, ie radially to the forging axis 2 can be adjusted. For this purpose, an actuator 20 is provided, which is designed according to the embodiment as a hydraulic actuating cylinder, but this is by no means mandatory. The piston 22 mounted in a stowed cylinder 21 of the actuating drive 20 is acted upon by a hydraulic medium connection 23, the travel being monitored by a measuring device 24. Since the support bearing 16 is carried by the piston 22 of the actuator 20, with an adjustment of the piston 22 and the stroke position of the punch 4 is changed. The stroke itself, which depends only on the design of An¬triebsnocken 11, remains unchanged. However, the additional adjustment possibility for the support bearing 16 must additionally be taken into account, for example via the compensation coupling 18.
    权利要求:
    Claims (5)
    [1]
    1. Forging device with guided in the stroke direction, forging tools (3) receiving punches (4) and by a shaft (10) drivable Hubtrieben (7), which at an abutment (12) under a bias in conditioning anden lift mechanisms (7 ) (4) positively supported, characterized in that the shafts (10) of the lifting mechanisms (7) have two mutually offset by 180 ° with respect to the shaft axis symmetrically symmetrical drive cam (11) with the abutments (12) of the Stamp (4) Cooperation.
    [2]
    2. Forging apparatus according to claim 1, characterized in that the shaft (10) of the lifting gear (7) in the region of the drive cam (11) has an oval cross-section.
    [3]
    3. Forging apparatus according to claim 1 or 2, characterized in that the shaft (10) of the lifting drives (7) between two on the one hand in the abutment (12) of the punch (4) and on the other hand in a abutment (12) gegenüberliegen¬den, in Lifting direction on the frame (1) supported support bearing (16) arranged La¬gerschalen (13,17) is rotatably guided.
    [4]
    4. Forging apparatus according to claim 3, characterized in that the support bearing (16) perpendicular to the shaft (10) and perpendicular to the stroke direction verschieb¬bar in the frame (1) is mounted.
    [5]
    5. Forging apparatus according to claim 3 or 4, characterized in that the support bearing (16) is adjustably mounted in the stroke direction.
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    同族专利:
    公开号 | 公开日
    DE102015115660B4|2020-10-08|
    DE102015115660A1|2016-04-07|
    US10166596B2|2019-01-01|
    US20160096214A1|2016-04-07|
    AT516340B1|2017-02-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2507301A1|1974-04-01|1975-10-09|Gfm Fertigungstechnik|FORGING MACHINE FOR CIRCULAR FORGING STRAND OR ROD-SHAPED WORKPIECES|
    US2247863A|1939-05-27|1941-07-01|Smith Corp A O|Pipe swaging machine|
    US2917099A|1958-02-07|1959-12-15|Cessna Aircraft Co|Terminal attaching machine|
    EP0667197B1|1994-01-18|1997-10-08|GFM Gesellschaft für Fertigungstechnik und Maschinenbau Aktiengesellschaft|Forging machine|
    DE20204914U1|2002-03-27|2002-06-06|Madat Gmbh Automatisierungstec|Press with cam|
    JP4398177B2|2003-05-23|2010-01-13|株式会社三共製作所|Mechanical press device|
    AT516340B1|2014-10-02|2017-02-15|GFM - GmbH|Forging device with guided in the lifting direction, forging tools receiving punches|AT516340B1|2014-10-02|2017-02-15|GFM - GmbH|Forging device with guided in the lifting direction, forging tools receiving punches|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50704/2014A|AT516340B1|2014-10-02|2014-10-02|Forging device with guided in the lifting direction, forging tools receiving punches|ATA50704/2014A| AT516340B1|2014-10-02|2014-10-02|Forging device with guided in the lifting direction, forging tools receiving punches|
    DE102015115660.1A| DE102015115660B4|2014-10-02|2015-09-17|Forging device with a rotationally symmetrical arrangement of the forging tools, with punches that are guided in the stroke direction and receive the forging tools|
    US14/872,330| US10166596B2|2014-10-02|2015-10-01|Forging apparatus with forging rams guided in the direction of stroke and accommodating forging tools|
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