• 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:
    An impact shaping apparatus is provided having a hydraulic actuator associated to the shaping tool. A gas spring of adjustable spring constant is in permanent fluid connection with the hydraulic actuator so as to allow for adjustment of the impact characteristics in accordance with the cold-working characteristics of the material to be shaped. The gas spring is formed by a cylinder and a floating piston arranged therein and defining a first working space communicating with the hydraulic actuator and a second working space containing a mass of gas.
    公开号:SU738498A3
    申请号:SU772485104
    申请日:1977-05-25
    公开日:1980-05-30
    发明作者:Дитс Херберт
    申请人:Трансформ Ферштеркунгсмашинен, Аг (Фирма)；
    IPC主号:
    专利说明:

    (54) DEVICE FOR SHOCK PRESSING
    one
    The invention relates to the field of metal forming, in particular, to devices for impact pressing, and can be used for cold forming, bending, and embossing.
    A device for impact pressing is known, which comprises a high pressure source, an accumulator connected by means of a distributor to a working cylinder 1.
    A disadvantage of the known device is the difficulty of adjusting the rate of deformation depending on the size of the workpiece, the material, the type of operation, which adversely affects the quality of the products.
    In the invention, in order to improve the quality of products by adjusting the rate of deformation, the device is equipped with a gas-hydraulic cylinder with a floating piston and a source of set pressure connected by means of a distributor to the piston cavity of the working cylinder and the gas-hydraulic cylinder, while the hydraulic cavity of the gas-hydraulic cylinder is constantly connected to rod end of the working cylinder.
    The device is equipped with a pressure regulator installed in the line connecting the source of the installation pressure 5 NIN with the working cylinder.
    The gas-hydraulic cylinder is made with limiting movement of the floating piston.
    FIG. 1 schematically shows the device; in fig. 2 - one of the options 10 device; in fig. 3 is a diagram of the operating cycle of this device.
    The device contains a high pressure source, which can be made in the form of gas-hydraulic transformation., Body 1 with several pistons and with plunger 2, accumulator 3 and working hydraulic cylinder 4. To gas-hydraulic converter 1 through line 5 through supply valve 6 (four-way acoustic valve ) gas is supplied which after 20. the plunger 2 acts on the fluid of the hydraulic cavity 7. The cavity 7 through the valve 8 (two-way two-way valve) and the pressure line 9 is connected to the battery 3. The inadmissible pressure is prevented by the relief valve 10. The accumulator 3 is connected by a working cylinder through the two-way double-inlet valve 11 4, on the piston of which is mounted a plunger 12 associated with a working tool (not shown).
    Installation pressure source 13 with plunger 14 through valve 15 and line
    16 connected to gas source (not repaired).
    Source 13 through the pressure head.
    17 and three-way three-way valve
    18 is connected to the working cylinder 4. The moving parts of the working cylinder return when the energy carrier is supplied through the valve 19. Safety valve 0 is provided for adjusting the set pressure5 (The setting pressure is substantially less than the working pressure, for example, 20 bar vs. 300 bar). In the working cylinder .m, a gas-hydraulic cylinder 21 is connected, the hydraulic cavity 22 of which is separated from the gas cavity 23 by a floating piston 24. The cylinder 21 is configured with an jjaMH 25 limiting the movement 11 of the piston 10 by the piston 24. The device is provided with an oil reservoir 26.
    In the embodiment of the device shown PA () ig. 2, the source of operating and set pressure is the pump 27, which is connected to the battery by means of a reversible valve 28.
    The device works as follows.
    The gas-hydraulic driver converts the battery 3. The gas-hydraulic cylinder 21 is loaded with pressure from the source 13 of the installation pressure and maintains the reference pressure on the working cylinder 4 when the source 13 is disconnected during the transition to the impact process using the battery 3. After installing the workpiece in the shaft under the plunger 12, the latter under a relatively small pressure, adjustable valve 12 from the source 13 of the installation pressure, but the installation thread S i is in contact with the surface of the workpiece. This happens very quickly and without much noise. Then valve 1I automatically opens and the shock energy accumulated in the accumulator with a short pulse affects the workpiece on the segment of the shock forming path. The impact molding can be repeated several times with one battery charge.
    After the end of the molding and disconnection of the valve 11, the piston with the plunger 12 returns to the initial position when the valve 18 is turned on, making a path that is limited in size to be able to manipulate the workpiece and the finished part under the punch.
    Presented in FIG. 3 diagrams. The path-time cycle is marked with the following time periods:
    T-total cycle time, with n rises per minute T;
    j ti - installation time corresponding to
    a segment of the path S,; 12 is the molding time corresponding to the segment i j the return time of the working piston to
    height of gydem H S j + S g; s t0 switching time;
    14. battery charging time 3.
    权利要求:
    Claims (3)
    [1]
    Invention Formula
    5 1. A device for impact pressing, containing a high pressure source, a battery, combined by means of a distributor with a working cylinder, characterized by the fact that, in order to improve the quality of products by adjusting the speed of deformation, it is equipped with a gas-hydraulic cylinder with a bulk 1 ° and source set pressure connected by means of a distributor to the piston cavity of the working cylinder and to the gas-hydraulic cylinder, while the hydraulic cavity of the gas-hydraulic cylinder is constant nno connected with p, 1 current cavity of the working cylinder.
    [2]
    2. The device according to claim 1, characterized in that it is provided with a pressure regulator installed in the highway connecting the source of the set pressure with the working cylinder m.
    [3]
    3. The device according to claim 1, characterized by the fact that the gas-hydraulic cylinder is made with restrictions on the movement of the floating vessel.
    Sources of information, pr:; ntye into account during the examination 1. Bocharov Yu. A. and Prokofiev V.N. Hydraulic drive forge-pressing machines. “Higher School, M., 1969, p. 155-156 fig. VII.5 /.
    类似技术:
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    US3143007A|1964-08-04|Hydraulic assist for press
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    SU1546196A1|1990-02-28|Arrangement for making hollow parts from tubular billets by hydraulic forming
    SU1214303A1|1986-02-28|Hydraulic drive of forging hammer
    同族专利:
    公开号 | 公开日
    CA1056224A|1979-06-12|
    US4152921A|1979-05-08|
    GB1584215A|1981-02-11|
    ATA829278A|1979-12-15|
    IT1083584B|1985-05-21|
    DE2623428A1|1977-12-08|
    PL198400A1|1978-03-13|
    NL7705774A|1977-11-29|
    SE7705935L|1977-11-26|
    ATA362177A|1979-03-15|
    ZA773023B|1978-04-26|
    FR2352607A1|1977-12-23|
    ES459141A1|1978-11-01|
    LU77367A1|1977-09-12|
    AT353076B|1979-10-25|
    AT362177B|1979-03-15|
    BR7703384A|1978-02-21|
    BE854985A|1977-09-16|
    JPS5311377A|1978-02-01|
    DK220377A|1977-11-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1068243A|1912-06-24|1913-07-22|Mesta Machine Co|Steam hydraulic press.|
    US1230492A|1916-02-09|1917-06-19|Gen Briquetting Company|Press or impact apparatus.|
    US1230486A|1916-02-09|1917-06-19|Gen Briquetting Company|Apparatus for exerting pressures and impacts, and method of operating the same.|
    US2403912A|1944-01-17|1946-07-16|Link Engineering Co|Press operating device|
    US3863488A|1973-07-10|1975-02-04|Nikolai Trifonovich Deordiev|Hydraulic press with pulsating load|
    FR2290970A1|1974-11-12|1976-06-11|Gargaillo Daniel|Punching tool using two hydraulic pistons - to actuate both the punch and a workpiece support which prevents distortion|DE3205740C2|1982-02-18|1986-02-20|Max Refflinghaus Maschinen- u. Werkzeugfabrik GmbH & Co KG, 5657 Haan|Wire bending machine|
    US4572637A|1983-02-28|1986-02-25|Olympus Optical, Co., Ltd.|Film end detector for use in cameras|
    RU2052308C1|1990-03-19|1996-01-20|Юрий Петрович Кузько|Apparatus for hydromechanical forming of parts|
    US8061179B2|2008-08-12|2011-11-22|GM Global Technology Operations LLC|High pressure dual-action hydraulic pump|
    FI20090383A|2009-10-20|2011-04-21|Mikko Sakari Junttila|Pressure change method and device for carrying out the process|
    FI20115392A0|2011-04-21|2011-04-21|Waertsilae Finland Oy|Hydraulic system and operating procedure|
    CN103042148A|2011-10-12|2013-04-17|张伟|Mechanical-hydraulic combined control system for achieving high-frequency forging of hydraulic precise forging machine|
    CN102668742B|2012-06-14|2015-05-20|徐州万国生物能源科技有限公司|Vibration type subsoiler|
    DE102012013098B4|2012-06-30|2014-08-07|Hoerbiger Automatisierungstechnik Holding Gmbh|machine press|
    JP5848678B2|2012-08-17|2016-01-27|イーグル工業株式会社|Pressure transducer|
    EP2722164B1|2012-10-18|2017-01-18|Nivora IP B.V.|Spring means for device for working sheet-like material|
    EP3904699A4|2013-03-25|2021-11-03|Minibooster Hydraulics As|Hydraulic system|
    DE102014016754A1|2014-11-12|2016-05-12|Joachim Klack|Method for cultivating and harvesting fiber hemp as catch crop|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19762623428|DE2623428A1|1976-05-25|1976-05-25|PROCEDURE FOR IMPACT OR SLOT PRESSES AND DEVICE FOR IT|
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