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    • 4. 发明授权
    • Abrasive foam grinding composition
    • 磨料泡沫研磨组合物
    • US5713968A
    • 1998-02-03
    • US655297
    • 1996-05-16
    • Clinton O. FruitmanAndrew GluckJohn L. LombardiKevin L. Stuffle
    • Clinton O. FruitmanAndrew GluckJohn L. LombardiKevin L. Stuffle
    • B24B37/24B24D3/32B24D13/14B24D3/34B24D11/02
    • B24D18/00B24B37/245B24D3/32
    • The present invention relates generally to abrasive stone pads for use in processing workpiece surfaces. The abrasive stones generally are produced by combining a phenolic resin mixture with a diluent and then injecting microballoon structures into the resin/diluent mixture to create a porous solution. The diluent is initially ball milled with an abrasive in a tumbler to eliminate the agglomerates and is then added to a resin monomer. A suitable catalyst is added to the mixture to create a chemical reaction, further increasing the porocity of the substance. The mixture is poured into molds and with through a filter or frit plate to remove excess resin and diluent. Finally, the mixture is cured, creating abrasive stones having a uniform surface and bulk structure with a uniform hardness, suitable for workpiece grinding.
    • 本发明一般涉及用于加工工件表面的磨料石垫。 研磨石通常通过将酚醛树脂混合物与稀释剂组合,然后将微球结构注入树脂/稀释剂混合物中以产生多孔溶液来制备。 稀释剂最初用研磨剂在转筒中进行球磨,以除去附聚物,然后加入到树脂单体中。 将合适的催化剂加入到混合物中以产生化学反应,进一步增加物质的孔隙度。 将混合物倒入模具中并通过过滤器或玻璃料板以除去多余的树脂和稀释剂。 最后,混合物固化,形成具有均匀表面和块状结构的磨料石,具有均匀的硬度,适用于工件研磨。
    • 5. 发明授权
    • Method and apparatus for in-situ formation of three-dimensional solid
objects by extrusion of polymeric materials
    • 通过挤出聚合材料原位形成三维固体物体的方法和装置
    • US6067480A
    • 2000-05-23
    • US825893
    • 1997-04-02
    • Kevin L. StufflePeter J. CreeganJohn L. LombardiPaul D. CalvertJohn A. O'KellyRobert A. HoffmanGabriel C. Chambers
    • Kevin L. StufflePeter J. CreeganJohn L. LombardiPaul D. CalvertJohn A. O'KellyRobert A. HoffmanGabriel C. Chambers
    • B29C67/00G06F15/46
    • B29C67/0055
    • An apparatus for thermal extrusion of a polymeric material to manufacture prototype mechanical elements from said polymeric material, said apparatus used for deposition of a liquefied ribbon of said polymeric material in patterned layers which solidify to form a three-dimensional prototype element, said apparatus comprising in combination, a mounting frame, said mounting frame including a mounting plate with a movable platen movable in the x and y directions, said frame further including an extrusion cylinder, said extrusion cylinder comprising a cylindrical housing having a uniform diameter cylindrical through passage, a head member having a uniform diameter bore connected with a reduced diameter, integral tip opening, said head member attached by a clamp to one end of the cylindrical housing to align the bore with the through passage, said-bore and through passage having an equal diameter, said head member including a circumferential heater to liquefy contents of the head member, a reciprocal piston slidably positioned in the cylindrical housing, and a piston actuator for driving the piston into the through passage to eject material through the tip opening.
    • 一种用于聚合材料的热挤压以从所述聚合物材料制造原型机械元件的装置,所述装置用于将所述聚合材料的液化带沉积在图案化层中,所述图案化层固化以形成三维原型元件,所述装置包括 组合,安装框架,所述安装框架包括具有可在x和y方向上移动的可移动压板的安装板,所述框架还包括挤压圆筒,所述挤压圆筒包括具有均匀直径的圆柱形通孔的圆柱形壳体, 具有与直径减小的一体的尖端开口连接的均匀直径孔的构件,所述头部构件通过夹具附接到圆柱形壳体的一端,以使孔与穿过通道对齐,所述孔和贯穿通道具有相等的直径, 所述头部构件包括周向加热器以液化头部构件的内容物, 活塞活塞可滑动地定位在圆柱形壳体中,以及活塞致动器,用于将活塞驱动到通路中以通过尖端开口喷射材料。