摘要:
An abrasive product is formed, in a blank making machine, into a layer forming a blank including at least abrasive grains. The layer is then set atop on at least another blank making machine, an assembly line along which successive posts are provided at the site whereof the elements designed to form the grinder are set on top of one another to form a stack, a station for heating the stack, and at least a pressing machine to compress the heated stack. An embodiment need not include the heating station. The grinder is a thin grinder that can include at least a reinforcing layer pierced with a hole wherein the abrasive product is distributed. The process is useful for making grinders for parting, machining, or pumicing.
摘要:
An assembly for a chemical-mechanical polishing process includes a platen having an outer edge, a top surface, and at least one inlet for introducing fluid to the top surface; a manifold system, entrenched in the top surface and in communication with the at least one inlet, for channeling the fluid about the top surface; a polishing pad having a top pad surface, and a plurality of fluid delivery through-holes for introducing the fluid from the manifold system to the top pad surface; and a fluid distribution system, entrenched in the top pad surface and in communication with the through-holes, for substantially uniformly distributing the fluid about the top pad surface. The fluid distribution system includes a set of intersecting first grooves defining an array of lands, each of the first grooves having a first cross sectional area. The fluid distribution system also includes a plurality of second grooves disposed within each of the lands and communicating with the first grooves, each of the second grooves having a second cross sectional area that is smaller than the first cross sectional area.
摘要:
There is described a hand-held grinding tool with a replaceable grinding-plate part, preferably comprising a steel plate, where on a grinding surface there is applied an abrasive coating in the form of grains of hard metal, which is preferably secured by soldering, the hand tool further comprising a handling part and clamping means for clamping the grinding-plate part to the handling part in a replaceable manner.
摘要:
There are provided a polishing apparatus and a polishing method capable of performing polishing a work (such as a wafer) with high efficiency and high precision, a novel work holding plate effectively holding a work and an adhering method for a work capable of adhering the work on the work holding plate with high precision. The polishing apparatus comprises: a polishing table(29); and a work holding plate(38), wherein a work held on the work holding plate(38) is polished supplying a polishing agent solution(41) in the apparatus, and in polishing action, an amount of deformation of the polishing table(29) in a direction normal to an upper surface thereof with respect to the upper surface thereof and/or an amount of deformation of the work holding plate(38) in a direction normal to a work holding surface thereof is restricted to 100 m or less by forming the polishing table(29) in one-piece, contriving flow paths of cooling water and others.
摘要:
The present invention relates to an apparatus for sharpening a circular blade. The sharpening apparatus is adapted to be positioned adjacent a power-driven sharpening wheel at an angle. The sharpening apparatus includes an angularly adjustable tool holder for angularly positioning the circular blade against the power-driven sharpening wheel. The sharpening apparatus of the present invention also includes a blade holder that quickly and easily locks the circular blade into place for sharpening and releases the blade after sharpening is complete. The present invention provides a reasonably safe and efficient sharpening apparatus for circular blades that provides uniform, high quality sharpening of one-sided and two-sided blades of varying circumferences.
摘要:
Method and apparatus are provided for polishing substrates comprising conductive and low k dielectric materials with reduced or minimum substrate surface damage and delamination. In one aspect, a method is provided for processing a substrate including positioning a substrate having a conductive material formed thereon in a polishing apparatus having one or more rotational carrier heads and one or more rotatable platens, wherein the carrier head comprises a retaining ring and a membrane for securing a substrate and the platen has a polishing article disposed thereon, contacting the substrate surface and the polishing article to each other at a retaining ring contact pressure of about 0.4 psi or greater than a membrane pressure, and polishing the substrate to remove conductive material.
摘要:
The wafer polishing apparatus enables the control of proper polishing pressure, so that the quality of wafers can be maintained high. A wafer holding head is composed of a carrier for pressing the wafer against a polishing pad, a retainer ring at the circumference of the carrier, and a holding head body. The holding head body includes a carrier pressing device having an air bag of which pressing surface area is 50% or smaller of the area of the wafer, and the pressing force from the carrier pressing device is transmitted to the carrier.
摘要:
A metal pipe excellent in dimensional accuracy, which is suitably used for a development sleeve, a fixing roller, or a photosensitive drum for electrophotographic apparatuses or electrostatic recording apparatuses such as copying machines or printers, or a base body thereof. The metal pipe is produced by cutting a long-sized metal pipe body into a specific length, to obtain a raw pipe, and adjusting the surface state and the dimensional accuracy of the raw pipe by cutting and polishing the outer peripheral surface of the raw pipe, wherein the raw pipe has an inner stress of 20 N/mm2 or less.
摘要翻译:尺寸精度优良的金属管,其适用于显影套筒,定影辊或电子照相设备的感光鼓或复印机或打印机的静电记录装置或其基体。 金属管通过将长尺寸的金属管体切割成特定长度而制造,以获得原料管,并且通过对原料管的外周表面进行切割和抛光来调节原料管的表面状态和尺寸精度 其中,所述原料管的内应力为20N / mm 2以下。
摘要:
Lapping or polishing at high speeds with fine abrasive particles offer significant advantages in the speed of lapping, savings of time in lapping, and smoothness in the finished articles. An improved lapping system comprises a lapper platen system comprising: a) a frame (e.g., having a total weight of at least 200 kg) supporting a work piece holder b) a rotatable platen having an abrasive surface comprising an abrasive sheet secured to said platen, said platen being capable of providing surface feet per minute speeds on in outer edge of at least about 1,500 surface feet per minute; and c) a work piece holder which is movable on said frame.
摘要:
A method of supporting a workpiece having journal and eccentric regions, in a grinding machine for grinding the eccentric regions thereof, is described which involves mounting the workpiece in a headstock of the grinding machine, providing a coupling between the workpiece and a rotary drive mechanism for rotating the workpiece about its main axis and fitting around at least one remote journal region of the workpiece a pair of members which form a journal bearing complementary to the said region, and fixing the lower of the two members to the machine, thereby providing support for the workpiece at the said remote position. The method is particularly relevant to the grinding of crankpins of a crankshaft. A grinding machine for grinding the crankpins of a crankshaft workpiece comprises headstock means mounted on the machine bed, a grinding wheel mounted on a wheelhead assembly, drive means for moving the wheelhead towards and away from a workpiece when fitted to the headstock, drive means for rotating a workpiece when mounted in the headstock, and two part cradle means mounted in the machine at least one part of which presents at least an upwardly directed curved support surface for engaging the underside of a journal bearing region of a crankshaft workpiece when fitted to the headstock.