• 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:
    Method for producing a barrel (1) by cold forging a cylindrical blank in a hammer mill, which has a plurality of forging hammers (3) distributed radially around the blank and distributed over the circumference of the blank, wherein forging hammers (3) are connected to the longitudinal axis (4). the blank parallel ribs (6) are used to forge during longitudinal forging longitudinal grooves (2) in the blank.
    公开号:AT514020A1
    申请号:T50157/2013
    申请日:2013-03-07
    公开日:2014-09-15
    发明作者:Michael Dr Ing Engesser
    申请人:Steyr Mannlicher Gmbh；
    IPC主号:
    专利说明:

    PATENT OFFICER DIPL.-ING. DR.TECTIN. ANDREAS WEISER EUROPEAN PATENT AND TRADEMARK ATTORNEY A-1130 VIENNA · KOPFGASSE 7 05719 STEYR MANNLICHER Holding GmbH A-4.442 Kleinraming (AT)
    The present invention relates to a method of making a run with troughs.
    To reduce the weight of a (hunting) rifle, the barrel is often provided with so-called troughs, which are distributed over the circumference of the barrel, running in the longitudinal direction of the barrel grooves. As a result, despite weight reduction, the desired rigidity and the minimum wall thickness of the barrel are achieved without negatively influencing the vibration behavior of the barrel during firing.
    Such floods are currently machined consecutively individually or at best milled in pairs from the barrel. The disadvantage of this is the high production cost and different surface roughness, which can also lead to increased dirt adhesion.
    The invention has for its object to provide a method for producing a run with troughs, which overcomes these disadvantages.
    This object is achieved with a barrel manufacturing method based on cold forging a cylindrical blank in a barrel hammer machine having a plurality of forging hammers distributed radially around the blank, distributed over the circumference of the blank, which method is characterized by TEL .: (+43 1) 879 17 06 FAX: (+43 1) 879 17 07 E-MAIL: MAIL@PATENTE.NET WEB: WWW.PATENTE.NET FIRST BANK 038-56704 BLZ: 20111 IBAN: ATI02011100003856704 BIC: GIBAATWW VAT: AT U 53832900 2/9 2 in that forge hammers are used with ribs parallel to the longitudinal axis of the blank to forge longitudinal grooves in the blank during cold forging.
    By forging the troughs or grooves directly during cold forging ("hammering") of the barrel eliminates subsequent machining of the barrel, which represents a significant manufacturing simplification. In addition to the reduction in manufacturing costs, moreover, a uniform surface, low surface roughness and a homogeneous strength of the entire flooded barrel over the cross-section of the material are achieved.
    Preferably, four forging hammers are used, each with one to four ribs, which ribs are regularly distributed over the circumference of the blank, üm depending on the caliber to achieve a good compromise between weight savings and strength.
    The invention will be explained in more detail with reference to an embodiment shown in the accompanying drawings. In the drawings show:
    Figure 1 is a provided with troughs run in a perspective view. and Figs. 2 and 3 show various embodiments of forging hammers of a hammer drill in an axially normal section for carrying out the method of the invention.
    Fig. 1 shows a barrel 1 for a rifle or other firearm (not shown). The barrel 1 is provided with several longitudinal grooves (troughs) 2 3/9 3 distributed over its circumference, which allow a reduction in weight while maintaining the desired rigidity, minimum wall thickness and vibration behavior of the barrel, as known to the person skilled in the art.
    The longitudinal grooves 2 of the barrel 1 are made directly during the cold forging (hammering) of the barrel 1 in a Laufhämmerma-machine, of which in Figs. 2 and 3, only the forging hammers 3 - seen in a normal to the axial direction 4 of the barrel 1 section - are shown. In the example shown four forging hammers 3 are used, which are distributed over the circumference of the barrel 1 and act radially in the direction of the arrows 5 on the recorded between them run 1 or hammer. For cold forging, the starting point is a cylindrical blank having an axial through-bore into which a forging mandrel (not shown) is inserted, whereupon the forging hammers 3 are hammered onto the blank in the area of the inserted hammersurge to make it run , As a rule, the axial length of the forging hammers 3 is shorter than the length of the barrel 1, so that the forging hammers 3 and the hammers mandrel serving as an abutment are moved in the axial direction relative to the barrel 1. In practice, the barrel 1 is moved in the axial direction 4 through the forging hammers 3 of the barrel hammer machine, while the hammering mandrel in the run in the region of the forging hammers 3 on a holding device, e.g. a handrail, is held. 4/9 4 For the present method, the forging hammers 3 are equipped, at their hammersurfaces acting on the blank or barrel, with ribs 6 parallel to the longitudinal axis 4 of the blank or barrel. In the embodiment of Fig. 2 per percussion hammer 3 each have a longitudinal rib 6 and in the embodiment of Fig. 3 per forging hammer 3 per two longitudinal ribs 6 used. The ribs 6 of all forging hammers 3 are distributed substantially regularly over the circumference of the blank or barrel 1.
    With the help of the ribs 6, the running f lungs or longitudinal grooves 2 are forged into the barrel 1 directly during the cold forging of the blank to run 1.
    The invention is not limited to the illustrated embodiments, but includes all variants and modifications that fall within the scope of the appended claims. 5.9
    权利要求:
    Claims (2)
    [1]
    1. A method for producing a barrel (1) by cold forging a cylindrical blank in a Laufhämmerma-machine, which has several distributed over the circumference of the blank, radially acting on the blank forging hammers (3), characterized in that forging hammers ( 3) with ribs (6) parallel to the longitudinal axis (4) of the blank to forge longitudinal grooves (2) in the blank during cold forging.
    [2]
    2. The method according to claim 1, characterized in that four forging hammers (3) are used with one to four ribs (6), which ribs (6) are regularly distributed over the circumference of the blank. 6.9
    类似技术:
    公开号 | 公开日 | 专利标题
    DE4427201C2|1996-09-12|Process for the production of hollow camshafts
    AT514020A1|2014-09-15|Method for producing a run with troughs
    DE102016210480A1|2018-01-04|Method for producing a mass balance shaft and mass balance shaft produced thereafter
    DE102011014310A1|2012-09-20|Crankshaft for reciprocating piston engine, comprises two main bearings, which are arranged symmetrical to rotational axis of crankshaft, connecting rod bearing, and crank arms for connecting main bearing and connecting rod bearing
    DE102006055027A1|2008-05-29|Radial rolling bearings, in particular for the storage of shafts in wind power transmissions
    DE102015218277B4|2021-05-20|Balance shaft
    DE102008018545A1|2009-10-15|Shaft with roller bearings
    DE102005022205A1|2006-11-16|Four row tapered roller bearing
    DE3036062C2|1984-06-07|Pistons for internal combustion engines
    WO2013117174A1|2013-08-15|Piston ring and method for the production thereof
    DE102010015404B4|2012-02-16|Method for repairing a rotor assembly of a turbomachine, ring element for a rotor assembly of a turbomachine and rotor assembly for a turbomachine
    DE102011087535A1|2013-06-06|balancer shaft
    DE102015223975A1|2017-06-08|Balance shaft for an internal combustion engine
    EP2814636A1|2014-12-24|Method and tool for increasing the strength of shafts, in particular of crankshafts
    DE102011011259A1|2012-08-16|Method for fine machining of surface of cylinder tube in cylinder crankcase of i.e. 4-cylinder combustion engine, involves increasing surface pressure in order to imitate heat distortion of cylinder tubes caused by heating combustion engine
    DE102013200261A1|2014-07-10|Piston ring for internal combustion engines with increased fatigue strength and method for its production
    DE102018101551A1|2018-12-13|Cage for a rolling bearing, method of manufacturing the cage and a cage blank
    DE102016208483A1|2017-11-23|Method for producing a conical piston for an axial piston machine and component for an axial piston machine
    DE102016120911A1|2017-05-11|Alloy composition for thermal spray application
    DE102010027100A1|2012-01-19|Internal combustion engine for motor car, has crankshaft rotatably supported in main or shaft bearings, where one of main or shaft bearings is provided with bearing axis that is eccentric to bearing axles of other main or shaft bearing
    DE102013010747A1|2014-12-31|Crankshaft for a reciprocating engine
    DE2854963A1|1979-06-28|CLIP
    DE102017206922B3|2018-08-23|Method for producing a piston for an internal combustion engine, piston, piston blank and casting mold
    DE102009032938A1|2011-01-20|Piston pin for connecting small connecting rod eye of clamping piston rod with piston of combustion engine, has inner hole, where piston is equipped with hub bore hole for receiving piston pin
    DE102009036784A1|2011-02-24|Bore profile for a piston pin bearing
    同族专利:
    公开号 | 公开日
    EP2964406A1|2016-01-13|
    US20160016217A1|2016-01-21|
    AT514020B1|2015-05-15|
    ES2607177T3|2017-03-29|
    HRP20161589T1|2017-01-13|
    US9446440B2|2016-09-20|
    WO2014134645A1|2014-09-12|
    EP2964406B1|2016-10-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE16299C|P. MAUSER in Oberndorf a. Neckar, Württemberg|New barrels for firearms|
    GB631438A|1947-09-03|1949-11-02|Samuel Smith|Improvements in apparatus for making fluted drills, bits, taps, reamers and the like|
    DE3120230A1|1981-05-21|1982-12-09|Carl Walther Gmbh, 7900 Ulm|Barrel for small arms , especially sporting and hunting rifles|
    US2104319A|1934-02-10|1938-01-04|Remington Arms Co Inc|Manufacture of rifled tubes|
    US3228298A|1960-04-20|1966-01-11|Andrew J Grandy|Rifle barrel|
    US3738044A|1970-10-09|1973-06-12|R Robinson|Anti spin-kick firearm|
    US4043173A|1974-01-21|1977-08-23|Politechnika Warszawska|Method of shaping the outer surfaces of objects consisting of deformable materials and device for the application of the method|
    US4722216A|1982-02-08|1988-02-02|Grotnes Metalforming Systems, Inc.|Radial forging method|
    FR2755042B1|1996-10-24|1998-12-24|Lemforder Nacam Sa|PROCESS FOR OBTAINING SPLINES ON A TREE|
    US6324780B1|1999-07-09|2001-12-04|E.R. Shaw, Inc.|Fluted gun barrel|
    AT408852B|2000-06-23|2002-03-25|Gfm Beteiligungs & Man Gmbh|METHOD FOR FORGING A METAL WORKPIECE|
    DE112006000619B4|2005-03-23|2014-02-13|Bishop Innovation Ltd.|Method for producing a steering rack|
    WO2007009267A1|2005-07-15|2007-01-25|Ernst Grob Ag|Method for producing internal and external toothings on thin-walled, cylindrical hollow parts|
    US8291632B2|2007-11-02|2012-10-23|Transmission Systems Limited|Projectile weapons|
    WO2011012766A1|2009-07-17|2011-02-03|Carrel Innovations Oy|Method for producing a gun barrel, device for producing a gun barrel and a gun barrel|
    US8025003B1|2009-10-14|2011-09-27|The United States Of America As Represented By The Secretary Of The Navy|Fluted firearm barrel|US10451373B2|2015-01-16|2019-10-22|ZEV Technologies, Inc.|Firearm barrel|
    US9677838B2|2015-09-16|2017-06-13|Robert T. Faxon|Firearm barrel fluting of varied depth and/or width|
    CN106141053A|2016-08-30|2016-11-23|上海交通大学|Servo-drive small deformation radially precision forging device|
    US10627179B1|2019-03-19|2020-04-21|The United States Of America As Represented By The Secretary Of The Army|M4A1 helically fluted barrel|
    法律状态:
    2020-11-15| MM01| Lapse because of not paying annual fees|Effective date: 20200307 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50157/2013A|AT514020B1|2013-03-07|2013-03-07|Method for producing a run with troughs|ATA50157/2013A| AT514020B1|2013-03-07|2013-03-07|Method for producing a run with troughs|
    ES14707312.6T| ES2607177T3|2013-03-07|2014-01-15|Procedure for manufacturing a barrel with barrel grooves|
    US14/772,465| US9446440B2|2013-03-07|2014-01-15|Method for producing a gun barrel having barrel flutings|
    EP14707312.6A| EP2964406B1|2013-03-07|2014-01-15|Method for producing a gun barrel having barrel flutings|
    PCT/AT2014/050011| WO2014134645A1|2013-03-07|2014-01-15|Method for producing a gun barrel having barrel flutings|
    HRP20161589TT| HRP20161589T1|2013-03-07|2016-11-29|Method for producing a gun barrel having barrel flutings|
    [返回顶部]