• 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:
    A method of providing an internal shoulder (7) and an external shoulder on a rotationally symmetrical hollow metal body (6) employs a rotating flow-pressing mandrel (2), the external configuration of which corresponds to the internal configuration of a workpiece to be manufactured from the body (6). The body (6) starts as a pipe length mounted on a drive spindle (1) of a takes place by driving the body (6), mounted on the mandrel (2), into a sizing ball tool (5) fastened on a machine table of the flow-pressing machine. The internal shoulder is first formed by cooperation of the body with the mandrel, and the external shoulder is then rolled by adjusting the ball tool radially outwards. <IMAGE>
    公开号:SU997910A1
    申请号:SU797770628
    申请日:1979-06-06
    公开日:1983-02-23
    发明作者:Херберт Хиллер；Рудольф Гот；Бернд Герлинг；Хейнц Рудольф
    申请人:Феб Робур-Верке,Циттау,Бетриб Дес Ифа-Комбинатес (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to methods for manufacturing metal products by rotary extrusion on a mandrel. A known method of manufacturing a hollow thick-walled axisymmetric metal part in which rotary extrusion of a hollow metal billet on the mandrel is performed in a single operation, the inner and outer shoulder. According to this method, the reduction of the outer diameter of the workpiece and the simultaneous execution at one of its ends of the inner collar are carried out by reverse rotational pressing. However, in the manufacture of the outer collar of the part remains untreated, due to which its inner diameter in the zone of this collar differs from the inner diameter in the zone of the treated part. In addition, due to the processing of the entire workpiece only by the method of reverse rotational extrusion, there arises the axial direction curvature of the part due to this processing method. These deviations of the dimensions and shape of the part lead to the need to provide for a large allowance for subsequent machining of the part. The invention is based on the task of developing a method for manufacturing a hollow thick-walled metal part having the shape of a rotating body, one inner and one outer shoulder, which provides a high level of accuracy in the shape and dimensions of the part, eliminating the subsequent precise processing of the part and removing a large metal layer. The requirement for high precision should relate primarily to the linear dimension between the inner and outer shoulder located at opposite ends of the part, to the inner diameter of the part and to the straightness of its axis. The aim of the invention is to increase the utilization of the material of the workpiece and reduce energy costs. This goal is achieved by the fact that, after reducing the outer size of the workpiece and simultaneously performing a reverse rotational extrusion of the inner shoulder at one end of the workpiece, the middle part of the workpiece is pulled out and the outer shoulder at the other end is carried out by direct rotational extrusion. FIG. 1 shows an apparatus for carrying out the method before the start of the rotary extrusion process; in fig. 2 same, after the inner collar; in fig. 3 - the same, after stretching the middle part of the workpiece; in fig. 4 is the same after finishing the outer collar treatment.
    For the implementation of the method, a rotary-press machine is used with a driven caliper moving relative to the machine table.
     In the spindle 1 of the drive support of the rotary-pressing machine, a pressing mandrel 2 is clamped, the shape of which corresponds to the shape of the cavity of the part being manufactured.
    On the pressing mandrel 2, the driving cartridge 3 is mounted with the possibility of axial movement synchronously rotating with it. On the machine table 4, a pressing device 5 is installed coaxially with the pressing mandrel, the working size of which can be adjusted.
    In order to perform the floor treatment, the metal blank 6 (pipe) is mounted on the pressing mandrel 2 and abuts one end on the lead cartridge 3. When the caliper is lowered, the blank rotates and is processed according to the reverse rotation extrusion scheme by a pressing device 5 which is set to the required diameter processing. This reduces the diameter of the workpiece and at the same time performs W ////// M
    there is an inner shoulder 7. The drive torque is transmitted to the workpiece by the lead cartridge.
    After the inner collar 7 is made, the driver cartridge is separated from the workpiece, and the drive torque is transmitted to the workpiece through the shoulder of its inner collar from the pressure mandrel. G of this moment until the end of the process, the workpiece is processed according to the direct rotational extrusion scheme: the middle part of the workpiece is pulled out to form an untreated outer shoulder 8 and then running in this shoulder.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A method of manufacturing a hollow thick-walled axisymmetric metal part, in which rotational extrusion of a hollow metal billet on the mandrel performs in one operation an inner and outer shoulder, and reducing the outer diameter of the preform while simultaneously performing at one end of the inner shoulder is reverse rotary extrusion, different that the subsequent stretching of the middle part of the workpiece and the execution of the outer shoulder at the other end of the workpiece are carried out directly pressure.
    It is recognized as an invention according to the results of the examination carried out by the Office for the Invention of the German Democratic Republic.
     21
    FIG.
    类似技术:
    公开号 | 公开日 | 专利标题
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    USRE22174E|1942-09-08|Broaching lathe
    SU1493356A1|1989-07-15|Apparatus for rotary drawing of hollow axisymmetric articles
    SU940968A1|1982-07-07|Apparatus for rolling thread on taps
    SU1389899A1|1988-04-23|Machine for sizing the ends of tubes
    SU1750796A1|1992-07-30|Spinning method
    SU1222376A1|1986-04-07|Apparatus for expansion by rolling of axially symmetric articles
    SU503391A1|1985-08-23|Apparatus for closed expanding of rings
    SU441070A1|1974-08-30|Method of manufacturing cylindrical parts by transverse rolling
    SU617183A1|1978-07-30|Tube-working and cutting-off device
    SU944899A1|1982-07-23|Expander for working holes
    JPS61115640A|1986-06-03|Manufacture of wheel made of light alloy
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    SU1745391A1|1992-07-07|Branch pipe spinning method
    SU1355305A1|1987-11-30|Tube rolling mill chuck
    SU858993A1|1981-08-30|Tool for producing necks on the end of tubular work
    JP2007069315A|2007-03-22|Method for machining both ends of bar material and lathe
    SU863080A1|1981-09-15|Tool for spinning
    同族专利:
    公开号 | 公开日
    GB2029301A|1980-03-19|
    JPS5530392A|1980-03-04|
    DD137537B1|1981-10-28|
    FR2430277B3|1982-05-28|
    FR2430277A1|1980-02-01|
    GB2029301B|1982-06-30|
    DE2922692A1|1980-01-17|
    DD137537A1|1979-09-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2461436C1|2011-04-01|2012-09-20|Федеральное Государственное унитарное предприятие "Государственное научно-производственное предприятие "Сплав"|Method of producing variable cross-section thin-wall shells|
    SU928745A1|1979-05-22|1983-06-07|Запорожский Проектно-Конструкторский И Технологический Институт|Hydraulic press control system|
    FR2534159B1|1982-10-08|1986-05-16|Piercy Jean|PROCESS FOR MANUFACTURING CYLINDRICAL PARTS, ESPECIALLY HOLLOW PARTS, AND MACHINE FOR IMPLEMENTING SAME|
    JPH0417678B2|1983-10-31|1992-03-26|Heiwa Corp|
    GB2191826B|1986-06-20|1989-12-06|Iracroft Ltd|Method of providing a face seal|
    CN102189167B|2011-03-24|2013-02-06|哈尔滨工程大学|Ball hot spinning forming device and method for nickel titanium shape memory alloy thin-walled pipe|
    CN102274884B|2011-05-26|2013-02-06|哈尔滨工程大学|Double layer rolling ball spinning device with adjustable radial gap|
    CN102266888A|2011-07-24|2011-12-07|哈尔滨工程大学|Ball spinning forming fixture device and reverse ball spinning forming method thereof|
    CN103357731B|2012-03-26|2015-07-08|广东龙丰精密铜管有限公司|Internal-thread copper pipe forming and spinning device|
    CN106862353B|2017-03-01|2019-05-14|北京中航昆吾科技有限公司|Vertical spinning equipment for processing thin-walled cylinder shape part|
    CN110328251B|2019-06-21|2020-09-01|武汉理工大学|Near-net composite flow forming device and method for annular component with outer ribs|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD20655278A|DD137537B1|1978-07-06|1978-07-06|METHOD FOR PRODUCING A THICKKWELLED ROTATION SYMETRIC METALHOLE BODY|
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