• 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:
    The invention relates to a method of manufacturing cooled valves for internal combustion engines. From a first cylindrical billet is formed a valve blank by drilling an axial blind bore therein and machining an inner circumferential groove at the blind end portion of said bore. From a second cylindrical billet is machined a cylindrical rod-shaped core and at least two coolant feed and return flow channels, said core being inserted into the bore of said blank. Then said blank and said core are assembled by a hydrostatic extrusion.
    公开号:SU724091A3
    申请号:SU782618501
    申请日:1978-05-26
    公开日:1980-03-25
    发明作者:Шаррон Франси
    申请人:Бассе Бретань Луар-Б.Б.Л. (Фирма)；
    IPC主号:
    专利说明:

    I
    The invention relates to a method of manufacturing valves, in particular cooled valves of an internal combustion engine.
    There is a known method of manufacturing coolant valves of at least two parts: tarce and a rod, so that the channels can be provided for the inlet and the coolant outlet. Then these two parts are connected either by threading, or by welding or brazing, or by pressing 2.
    With this method of manufacturing valves, as a result of defects, for example from thermal damage, the 1 loosening of the plate is detached from the rod and falls into the engine cylinder, causing serious damage.
    The purpose of the invention is to increase the service life of the valve, which in its finished form is an assembly without transverse connecting links.
    In this case, a blank axial hole is made in a blank from a cylindrical soil, which is extruded, and at the bottom its internal circular groove is made of a cylindrical bar in the form of a cylindrical rod, the diameter of which mates with the diameter of a blind hole, is made in it, at least two KaJiana for supplying and discharging the cooling medium, inject the core into the hole of the workpiece and catch it by the hydrostatic method, after which the valve is finished to be treated rmy.
    Before the extrusion operation, the channels and the groove are filled with a substance, the melting point of which is below the melting point of the main material of the valve, and before the core is inserted into the hole, the outer side surface of the core and the central hole is surface treated.
    FIG. 1 shows the workpiece after the first stage of processing by the described method; in fig. 2 shows a core in the form of a rod with two channels, respectively, for supplying and returning a coolant made in the second stage; in fig. 3 - valve, after installing the core in the workpiece, a longitudinal section; in fig. 4 - the same, after removal from the press; in fig. 5 - the same, after removing the placeholder; in fig. 6 — finished valve after it has formed a plate.
    In a cylindrical bar 1, an extruded material, such as fatty steel, and having an initial diameter at least equal to the final diameter of the valve plate, is made, for example, by drilling a blind axial hole 2, at the bottom of which a hole is cut, For example, by EDM with small holes or by turning with internal holes of larger diameter, the internal steep shaft 3 for circulating the cooling medium in the valve plate.
    Then, external machining is carried out, for example, by tilting on the machine. To reduce the outer diameter of the bar 1 with the exception of its blind end, so that the head 4 remains, in which there is a groove 3.
    From the second cylindrical npjTKa, amenable to extrusion and, if necessary, different from the material of the first bar, the core 5 is made in the form of a cylindrical rod, the diameter of which is conjugate with the diameter of the blind hole 2 in the rod 1. Then. In this core, two channels 6 are made, respectively, for the supply and return of the cooling medium. These longitudinal channels 6 are made either in the form of through-holes in the core 5 extending at both its ends, or in the form of grooves cut along the entire length of the outer side surface of the core 5. These channel or grooves can be polymeric or curvilinear, parallel or non-parallel ..
    In the case of channels 6, the type 5 or protruding tip 7 is formed on the core 5, which forms a separate partition between the two channels 6, and the output of the 5th end.
    Then, before pressing the core 5 into the blind hole 2 of the workpiece 1 so that the spike: 7 serdeshka ups into the inner bottom of the valve head, if necessary, surface lateral outer surface of the core 5 and the inner surface of the blind hole 2 of the workpiece 1 are surface-treated to improve adhesion between the core and the workpiece at a later stage of the method. This treatment consists, for example, in degreasing cleaning and plating.
    Before the valve operation,
    when the core is inserted into the workpiece, if necessary, the cooling circuit (channels 6 and groove 3) is filled with substance 8, the pressure point of which is below the melting point of the valve main material, for example, eutectic, gigantic at about 100 ° C. This substance is absorbed in the molten state.
    and after it is solidified during cooling, the outer openings of the channels 6 exiting at the free end of the core 5 are blocked in order to avoid loss of the substance during its liquefaction during the extrusion process. The channels are sealed, for example, using metal threaded plugs or tampons, screwed into the threaded mouths of the channels 6. The operation, preferably hydrostatic, to achieve better uniformity of the extruded material, is carried out in a press. water to melt and remove the aggregate (substance) after removing the plugs.
    At the last stage of valve manufacture using the proposed method, the head 4 forms the shape of a plate. Invention formula
    权利要求:
    Claims (3)
    [1]
    1. A method of manufacturing cooled valves, for example, for internal combustion engines, including the operation of drilling axial channels in a brush to drain and supply coolant, characterized in that, in order to increase the service life of the valve, in a cylindrical extruded rod blank, a hollow axial hole, and at the bottom of it - an internal circular groove, is turning a core in the form of a cylindrical rod, the diameter of which is mated with the diameter of the blind hole, from the other 1 Shlindrotesk rod; At least two channels of DL.Ch supply and removal of cooling medium are introduced into it, the core is introduced into the hole of the workpiece and squeezed out of it by the hydrostatic method, after which the valve is finally processed
    to shape it.
    [2]
    2. A method according to claim 1, characterized in that prior to the extrusion operation, the channels and the groove are filled with a substance whose melting point is lower than the melting point of the valve base material.
    [3]
    3. Method according to paragraphs. 1 and 2, characterized in that prior to inserting the core into the hole, surface treatment of the outer side surface of the core and the surface of the central hole is carried out.
    Sources of information, 1Gr1sh t 5,1e into account during the examination
    1. USSR Author's Certificate No. 512328, cl. F 16 K 49/00, 1976 ..
    2. USSR author's certificate number 412428, cl. F 16 K 49/00, 1974 {prototype).
    -five
    R
    I
    GI
    Tl.n
    one
    FIG.
    Fig 2
    FIG. five
    ig
    Fig 6
    类似技术:
    公开号 | 公开日 | 专利标题
    SU724091A3|1980-03-25|Method of manufacturing cooled valves
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    US3791015A|1974-02-12|Method of repairing a beam blank mold
    KR19990036716A|1999-05-25|Heating tip and method of manufacturing the same
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    WO1993011366A1|1993-06-10|Method of manufacturing a crankshaft
    DE1097210B|1961-01-12|Pistons for internal combustion engines
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    WO2004041464A1|2004-05-21|Tool for the cutting of threads
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    SU975240A2|1982-11-23|Single edge drill
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    JP2003136193A|2003-05-14|Bore pin for casting cylinder block
    SU874289A2|1981-10-23|Tap
    SU1445894A1|1989-12-23|Method of disassembling threaded elements
    SU874271A1|1981-10-23|Tool for working deep holes
    同族专利:
    公开号 | 公开日
    IT7823596D0|1978-05-19|
    GB1604283A|1981-12-09|
    DK235778A|1978-11-28|
    IT1095512B|1985-08-10|
    FR2392224A1|1978-12-22|
    NL7805781A|1978-11-29|
    CH622857A5|1981-04-30|
    FR2392224B1|1979-09-07|
    DE2821752A1|1978-12-07|
    US4190941A|1980-03-04|
    JPS53148636A|1978-12-25|
    SE7806069L|1978-11-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1254976A|1917-02-15|1918-01-29|Ettore Bugatti|Engine-valve.|
    US2423203A|1943-02-20|1947-07-01|Union Carbide & Carbon Corp|Method of making blowpipe nozzle blanks|
    US3477112A|1968-03-08|1969-11-11|Goss Gas Inc|Method for forming torch tips|
    US3716902A|1970-02-18|1973-02-20|Small Tube Products|Method of making a composite welding torch tip|
    DE2240572A1|1972-08-18|1974-02-28|Maschf Augsburg Nuernberg Ag|VALVE FILLED WITH THERMAL FLUID|
    CH571154A5|1973-10-31|1975-12-31|Sulzer Ag|
    US4080700A|1976-01-05|1978-03-28|Brunswick Corporation|Method of atomizing a liquid, an atomizer tip for use in the method and method of manufacturing the tip|CA1198266A|1982-12-17|1985-12-24|Jobst U. Gellert|Method of manufacture of an injection moldingintegral heated probe|
    GB2135027A|1983-02-12|1984-08-22|John George Frederick Spicer|Fluid flow control valves|
    DE4239362A1|1992-11-24|1994-05-26|Teves Gmbh Alfred|Valve, especially pressure valve for a radial piston pump, with few components|
    JPH09184404A|1995-12-28|1997-07-15|Fuji Oozx Inc|Hollow valve element for internal combustion engine|
    US20050279630A1|2004-06-16|2005-12-22|Dynamic Machine Works, Inc.|Tubular sputtering targets and methods of flowforming the same|
    FR2927879B1|2008-02-27|2010-08-20|Eurocopter France|RIGID HYDRAULIC CONTROL SHAFT AND STEER VARIATION CONTROL SYSTEM PROVIDED WITH SUCH A CONTROL SHAFT|
    CN101850375A|2010-05-04|2010-10-06|湖北兴升科技发展有限公司|Hot extrusion process method for lower valve plate of water-cooled air compressor valve plate|
    CN101972923A|2010-11-29|2011-02-16|龙工齿轮有限公司|Method for machining and manufacturing overall multi-path valve body|
    US8555503B2|2011-07-20|2013-10-15|Ford Global Technologies, Llc|Casting-integrated control body processing|
    CN105298580A|2015-10-30|2016-02-03|重庆奇甫机械有限责任公司|Self-cleaning type sodium filling valve with spiral blade|
    CN105921539B|2016-05-20|2018-07-03|内蒙古北方重工业集团有限公司|The preparation method of large-caliber deep blind hole workpiece|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7716384A|FR2392224B1|1977-05-27|1977-05-27|
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