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The dressing of the grinding wheel includes mixing air and grinding water from a surface grinding process including semiconductor chips lapped with abrasive grains having a count of at least #2000 and no more than #6000 and jetting the mixed air and grinding water as minute water drops back onto the surface of the grinding wheel during ...
به خواندن ادامه دهید
US patent 876,372 Surface Grinding Machine was issued to Robert C. Matthews of Peru, Lasalle County, IL. It was granted on 01/14/1908.
به خواندن ادامه دهید
The present invention provides a surface grinding method and apparatus for achieving a thin plate work such as a semiconductor wafer with high flatness, high accuracy and certainty and the apparatus comprises: a surface grinder in which a grinding wheel support member 3 by which a rotary shaft 5 of a grinding wheel 6 is supported is held by a pivotal shaft portion 4 and a grinding wheel shaft ...
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A method of and an apparatus for grinding a planar surface on a workpiece when the workpiece is pressed against an abrasive belt moving in an arcuate path. The workpiece is held by the apparatus with the plane at which the planar surface is to be formed oriented generally parallel to the axis of the arcuate path of the abrasive belt, and is moved about an axis normal to and intersecting the ...
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A rotary concrete surface grinding and smoothing device having a segmental diamond chip impregnated, engine-driven, rotating grinding head; a foot-operated unit for raising and lowering the grinding head with relation to the surface to be ground; a slanted front end for better visibility; and, ballast weight and adjustable axle means to incrementally vary the downward pressure of the grinding ...
به خواندن ادامه دهید
As a grinding apparatus for grinding the surface of a semiconductor wafer, a grinding apparatus comprising a supporting base and at least one grinding wheel assembly disposed to face to the supporting base has been proposed and come into commercial acceptance as disclosed in European Laid-Open Patent Publication No. 0 039 209 (European Patent ...
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CN1396041A CN 02115113 CN02115113A CN1396041A CN 1396041 A CN1396041 A CN 1396041A CN 02115113 CN02115113 CN 02115113 CN 02115113 A CN02115113 A CN 02115113A CN 1396041 A CN1396041 A CN 1396041A Authority CN China Prior art keywords roller polishing polishing grinding grinder metope Prior art date Legal status (The legal status is an assumption and is not a …
به خواندن ادامه دهید
What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims. 1. A surface grinding machine, comprising a rigid transmission housing having a tubular narrowing region; a grinding disc arranged movable on said transmission housing; a rotating drive which oscillatingly drives said grinding disc and includes a motor formed as an electric motor; an ...
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A surface grinding machine capable of grinding the end surface of a workpiece (10) without leaving any unground protruding portion at the centre thereof by imparting rotation on its own axis and around a chuck holder or eccentric rotation to either a chuck (14) for holding the workpiece (10) or a cup-shaped grinding wheel (12) by a planetary gear mechanism (25, 26).
به خواندن ادامه دهید
1. A surface grinding machine, comprising a rigid transmission housing having a tubular narrowing region; a grinding disc arranged movable on said transmission housing; a rotating drive which oscillatingly drives said grinding disc and includes a motor formed as an electric motor; an angular transmission for transmitting a rotation of said rotating drive to said grinding disc, said angular ...
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A rods precision cutting-off and end surface grinding machine consisting chiefly of a set each of drive device, cut-off device, end surface grinding device and rods chucking device, which is chiefly characterized by the following operations: to put the controlling lever of rods chucking device in the central position of T-slot on the right side wall of housing body and move the said lever in ...
به خواندن ادامه دهید
What is claimed as new and what is desired to secure by Letters Patent of the United States is: 1. A portable surface grinder comprising a frame with a pair of spaced parallel tracks, a carriage movably mounted on a pair of spaced and elongated parallel shafts, each shaft terminating in a pair of spaced wheels which precisely roll in said tracks, a grinding wheel mounted on a third shaft is ...
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A surface grinding machine capable of being computer operated and having a multi-function capability for performing conventional slot and surface, plunge, side wheel, creep feed and short stroke grinding in any desired combination or sequence. A table containing a workpiece is driven by a highly tensioned, circulating primary belt drive system capable of providing a desired grind with a ...
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This invention is related to surface grinders, and more particularly to an adapter that is mounted on the surface grinder spindle after the grinding wheel has been removed, to support the shank of a small grinding tool. Surface grinders usually have a tapered spindle. The grinding wheel is mounted on the spindle and locked in position by a nut.
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1. A grinding tool comprising a disk-shaped base member (1, 11, 21, 31) having a central axis, a radially outer surface (2, 12, 22, 32) extending generally in the axial direction, and a pair of opposite side faces (3, 13, 23, 33) extending radially inwardly from said outer surface transversely of the central axis, cutting elements (4, 14, 24, 34) located on the outer surface (2, 12, 22, 32 ...
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