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    • 15. 发明授权
    • Scroll saw hold down apparatus providing enhanced work piece clearance
    • 涡旋锯压紧装置提供增强的工件间隙
    • US5176059A
    • 1993-01-05
    • US743452
    • 1991-08-09
    • Robert C. Anderson
    • Robert C. Anderson
    • B27B19/06B23D49/00B23D51/04
    • B23D49/007B23D51/04Y10T83/705Y10T83/7553Y10T83/7573Y10T83/758
    • Precision saws such as scroll saws and the like are provided with a hold down apparatus which allows for enhanced work piece clearance thus, greater work piece thickness utilization of the saws wherein the hold down apparatus is mounted in an offset position allowing the hold down to be raised to a maximum height to just below reciprocating saw blade drive means. A work piece hold down apparatus for use in combination with a work piece table and a saw blade having a reciprocating drive means is provided wherein a work piece hold down apparatus having a hold down foot which is generally planar with forwardly projecting spaced apart arms for engaging the work piece on each side of the blade, the foot planar portion being connected to a rod member on a second planar portion of the hold down apparatus with the rod member being affixed to the hold down apparatus offset from the generally planar foot portion and adjustably mounted by clamping means to a saw frame member behind and adjacent to the reciprocating saw blade.
    • 诸如滚动锯等的精密锯具有一个压紧装置,它能够增加工件间隙,从而可以提高锯的更大的工件厚度利用率,其中压紧装置安装在允许压下的偏移位置 升至最大高度,刚好低于往复锯片驱动装置。 一种用于与工件台组合使用的工件压紧装置,具有往复式驱动装置的锯片设置有工件压紧装置,该工具具有一个大致平坦的压脚装置,其具有向前突出的间隔开的臂,用于接合 所述工件在所述叶片的每一侧上,所述脚平面部分连接到所述按压装置的第二平面部分上的杆构件,所述杆构件固定到从大致平坦的脚部偏移的所述按压装置,并且可调节地 通过夹紧装置安装在往复式锯片后面和邻近往复锯片的锯框架件上。
    • 16. 发明授权
    • Method of increasing the phase stability and the compressive yield
strength of uranium-1 to 3 wt. % zirconium alloy
    • 提高铀-1相的稳定性和压缩屈服强度的方法为3wt。 %锆合金
    • US4604148A
    • 1986-08-05
    • US554487
    • 1983-11-22
    • Robert C. Anderson
    • Robert C. Anderson
    • C22F1/18C21D1/00
    • C22F1/18
    • A uranium-1 to 3 wt. % zirconium alloy characterized by high strength, high ductility and stable microstructure is fabricated by an improved thermal mechanical process. A homogenous ingot of the alloy which has been reduced in thickness of at least 50% in the two-step forging operation, rolled into a plate with a 75% reduction and then heated in vacuum at a temperature of about 750.degree. to 850.degree. C. and then quenched in water is subjected to further thermal-mechanical operation steps to increase the compressive yield strength approximately 30%, stabilize the microstructure, and decrease the variations in mechanical properties throughout the plate is provided. These thermal-mechanical steps are achieved by cold rolling the quenched plate to reduce the thickness thereof about 8 to 12%, aging the cold rolled plate at a first temperature of about 325.degree. to 375.degree. C. for five to six hours and then aging the plate at a higher temperature ranging from 480.degree. to 500.degree. C. for five to six hours prior to cooling the billet to ambient conditions and sizing the billet or plate into articles provides the desired increase in mechanical properties and phase stability throughout the plate.
    • 铀-1〜3wt。 通过改进的热机械工艺制造出具有高强度,高延展性和稳定微观结构的%锆合金。 在两步锻造操作中已经减少至少50%的合金的均质铸锭被轧制成具有75%还原的板,然后在真空中在约750℃至850℃的温度下加热 然后在水中淬火进行进一步的热机械操作步骤以提高约30%的压缩屈服强度,稳定微结构,并且减小整个板的机械性能的变化。 这些热机械步骤是通过冷轧淬火板来实现的,以将其厚度减小到约8至12%,将冷轧板在约325℃至375℃的第一温度下老化5至6小时,然后老化 将板在480℃至500℃的较高温度下进行5至6小时,然后将坯料冷却至环境条件,并将坯料或板定型成制品,从而提供整个板材期望的机械性能和相稳定性的增加。
    • 17. 发明授权
    • Extrusion-formed uranium-2.4 wt. % article with decreased linear thermal
expansion and method for making the same
    • 挤出形成的铀-2.4wt。 具有降低的线性热膨胀的%文章和制造相同的方法
    • US4361447A
    • 1982-11-30
    • US381277
    • 1982-05-24
    • Robert C. AndersonJack M. JonesThomas G. Kollie
    • Robert C. AndersonJack M. JonesThomas G. Kollie
    • C22C43/00C22F1/18
    • C22C43/00
    • The present invention is directed to the fabrication of an article of uranium-2.4 wt. % niobium alloy in which the linear thermal expansion in the direction transverse to the extrusion direction is less than about 0.98% between 22.degree. C. and 600.degree. C. which corresponds to a value greater than the 1.04% provided by previous extrusion operations over the same temperature range. The article with the improved thermal expansion possesses a yield strength at 0.2% offset of at least 400 MPa, an ultimate tensile strength of 1050 MPa, a compressive yield strength of at least 0.2% offset of at least 675 MPa, and an elongation of at least 25% over 25.4 mm/sec. To provide this article with the improved thermal expansion, the uranium alloy billet is heated to 630.degree. C. and extruded in the alpha phase through a die with a reduction ratio of at least 8.4:1 at a ram speed no greater than 6.8 mm/sec. These critical extrusion parameters provide the article with the desired decrease in the linear thermal expansion while maintaining the selected mechanical properties without encountering crystal disruption in the article.
    • 本发明涉及一种制备铀-2.4wt。 %铌合金,其中在垂直于挤出方向的方向上的线性热膨胀在22℃至600℃之间小于约0.98%,这对应于大于先前挤出操作提供的1.04% 温度范围相同 具有改进的热膨胀的制品具有至少400MPa的0.2%偏移的屈服强度,1050MPa的极限拉伸强度,至少675MPa的至少0.2%的偏移的压缩屈服强度和在 至少25%超过25.4毫米/秒。 为了使本文提供改进的热膨胀,将铀合金坯料加热至630℃,并以不大于6.8mm /分钟的冲压速度通过模头以α至相对于至少8.4:1的压缩比挤出, 秒 这些关键的挤出参数为制品提供所需的线性热膨胀减少,同时保持所选择的机械性能,而不会在制品中遇到晶体破坏。
    • 18. 发明授权
    • Die singulation method and package formed thereby
    • 由此形成分片方法和封装
    • US08236611B1
    • 2012-08-07
    • US12758833
    • 2010-04-13
    • Robert C. AndersonRandy J. ShulPeggy J. ClewsMichael S. BakerMaarten P. De Boer
    • Robert C. AndersonRandy J. ShulPeggy J. ClewsMichael S. BakerMaarten P. De Boer
    • H01L21/00
    • H01L21/78
    • A method is disclosed for singulating die from a substrate having a sacrificial layer and one or more device layers, with a retainer being formed in the device layer(s) and anchored to the substrate. Deep Reactive Ion Etching (DRIE) etching of a trench through the substrate from the bottom side defines a shape for each die. A handle wafer is then attached to the bottom side of the substrate, and the sacrificial layer is etched to singulate the die and to form a frame from the retainer and the substrate. The frame and handle wafer, which retain the singulated die in place, can be attached together with a clamp or a clip and to form a package for the singulated die. One or more stops can be formed from the device layer(s) to limit a sliding motion of the singulated die.
    • 公开了一种用于从具有牺牲层和一个或多个器件层的衬底分离裸片的方法,其中保持器形成在器件层中并固定到衬底。 深层反应离子蚀刻(DRIE)从底侧蚀刻通过衬底的沟槽限定了每个管芯的形状。 然后将手柄晶片附接到基板的底侧,并且牺牲层被蚀刻以对模具进行分割并从保持器和基板形成框架。 将单个模具保持在适当位置的框架和处理晶片可以用夹子或夹子附接在一起并形成用于单个模具的封装。 可以从设备层形成一个或多个止挡件,以限制单模模具的滑动运动。