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    • 31. 发明公开
    • Process for producing flat heat exchange tubes
    • 生产扁平换热管的过程
    • EP0781610A3
    • 1997-07-09
    • EP96120849.3
    • 1996-12-23
    • SHOWA ALUMINUM CORPORATION
    • Saito, YoshihiroHozumi, SatoshiTamura, TakashiSakaguchi, MasashiKaimura, Satoru
    • B21C37/15B21B1/22B21B13/00B21H8/00
    • F28F3/048B21B1/0805B21B1/22B21B1/227B21B13/00B21C37/151B21C37/202B21H8/00F28D1/0316
    • A process for producing a flat heat exchange tube (A) having parallel refrigerant passages (6) in its interior and comprising flat upper and lower walls (1,2), opposite side walls (3,4) and a plurality of reinforcing walls (5) connected between the upper and lower walls (1,2), extending longitudinally of the tube (A) and spaced apart from one another by a predetermined distance, using a rolling mill (33) comprising a central work roll (35) and a plurality of planetary work rolls (36) arranged around a portion of the periphery of the central work roll (35) and spaced apart circumferentially thereof, the central work roll (35) being formed with parallel annular grooves (39,40) in the periphery thereof. An aluminum sheet blank (30) comprising a brazing sheet is rolled by the mill (33) and thereby thinned to a predetermined thickness to form a flat portion serving as the lower wall (2), cause the annular grooves (39) at opposite roll ends to form upright portions (12) providing the respective side walls (3,4) and the other annular grooves (40) to form vertical ridges providing the reinforcing walls (5), the upright portions and the vertical ridges projecting from the flat portion integrally therewith. An aluminum sheet (20) comprising a brazing sheet is placed over all the ridges to provide the upper wall (1) and joined to the upright portions to make the upright portions serve as the opposite side walls (3,4), and the ridges of the lower wall are joined to the upper wall to form the reinforcing walls (5).
    • 一种制造在其内部具有平行制冷剂通道(6)并包括平坦的上壁和下壁(1,2),相对的侧壁(3,4)和多个加强壁(6)的扁平换热管(A) 5)连接在上,下壁(1,2)之间,使用包括中心工作辊(35)的轧机(33)在管(A)的纵向延伸并彼此间隔开预定的距离; 多个行星工作辊(36),围绕所述中央工作辊(35)的周边的一部分布置并且沿周向间隔开,所述中央工作辊(35)在所述中央工作辊 其周边。 包括硬钎焊板的铝板坯料(30)由轧机(33)轧制并因此变薄到预定厚度以形成用作下壁(2)的平坦部分,使环形凹槽(39)处于相对辊 端部以形成提供相应侧壁(3,4)和其他环形凹槽(40)以形成提供加强壁(5)的垂直脊的直立部分(12),直立部分和垂直脊从平坦部分 与之一体。 包括钎焊片的铝板(20)放置在所有脊上以提供上壁(1)并连接到直立部分以使直立部分充当相对的侧壁(3,4),并且脊 的下壁连接到上壁以形成加强壁(5)。
    • 36. 发明公开
    • Method of manufacturing a splined member for use in a driveshaft assembly
    • Herstellungsverfahren eines Keilprofilsfüreine Antriebswelle
    • EP1634659A1
    • 2006-03-15
    • EP05255483.9
    • 2005-09-07
    • DANA CORPORATION
    • Duggan James AKeller, Thomas J.
    • B21C37/15B21D51/12B21J5/12
    • B21K1/066B21C37/202B21J5/12B21K1/06B21K1/063B21K1/12B21K1/30
    • A method of manufacturing a splined member avoids the generation of waste material and minimizes the amount of dimensional inaccuracies. A hollow cylindrical workpiece (10) is initially provided from a material having a relatively high elongation characteristic. The material used to form the workpiece may be AA-5154 grade aluminum alloy having an elongation characteristic that is in the range of from about 20% to about 30%, preferably in the range of from about 22% to about 28%, and most preferably about 25%. A mandrel (20) having a plurality of external splines (22) is inserted within workpiece (10), and the workpiece is deformed into engagement with the mandrel (20) to form a splined member using a swaging process, such a rotary swaging or feed swaging. The splined member is thus formed having a plurality of internal splines (13a) and a cylindrical outer surface (11). The use of the swaging process avoids the generation of waste material. Also, dimensional accuracy is improved because the splined member is shaped in accordance with the precisely formed mandrel, which eliminates dimensional variations that can result from known machining practices.
    • 制造花键构件的方法避免了废料的产生并且使尺寸不准确的量最小化。 最初由具有较高延伸特性的材料提供中空的圆柱形工件(10)。 用于形成工件的材料可以是AA-5154级铝合金,其伸长特性在约20%至约30%的范围内,优选在约22%至约28%的范围内,最大 优选约25%。 具有多个外花键(22)的心轴(20)被插入到工件(10)内,并且工件变形成与心轴(20)接合,以使用模锻工艺形成花键构件,这种旋转锻压或 饲料模锻。 花键构件因此形成有多个内花键(13a)和圆柱形外表面(11)。 使用模锻工艺避免了废料的产生。 此外,尺寸精度得到改善,因为花键构件根据精确形成的心轴成形,消除了可能由已知的加工实践导致的尺寸变化。